Use a callback to notify a new decoded frame

Make the decoder independant of the SDL event mechanism.
Improve error handling in screen initialization
2021-02-14 15:31:31 +01:00 · 2021-02-14 14:47:49 +01:00 · 2021-02-14 14:47:49 +01:00 · 2021-02-14 14:47:49 +01:00 · 2021-02-14 14:47:49 +01:00 · 2021-02-14 14:47:49 +01:00
50 changed files with 965 additions and 2037 deletions
--- a/README.md
+++ b/README.md
@ -198,7 +198,6 @@ If `--max-size` is also specified, resizing is applied after cropping.
 To lock the orientation of the mirroring:

 ```bash
-scrcpy --lock-video-orientation     # initial (current) orientation
 scrcpy --lock-video-orientation 0   # natural orientation
 scrcpy --lock-video-orientation 1   # 90° counterclockwise
 scrcpy --lock-video-orientation 2   # 180°
@ -226,9 +225,7 @@ error will give the available encoders:
 scrcpy --encoder _
 ```

-### Capture
-
-#### Recording
+### Recording

 It is possible to record the screen while mirroring:

@ -252,58 +249,6 @@ variation] does not impact the recorded file.
 [packet delay variation]: https://en.wikipedia.org/wiki/Packet_delay_variation


-#### v4l2loopback
-
-On Linux, it is possible to send the video stream to a v4l2 loopback device, so
-that the Android device can be opened like a webcam by any v4l2-capable tool.
-
-The module `v4l2loopback` must be installed:
-
-```bash
-sudo apt install v4l2loopback-dkms
-```
-
-To create a v4l2 device:
-
-```bash
-sudo modprobe v4l2loopback
-```
-
-This will create a new video device in `/dev/videoN`, where `N` is an integer
-(more [options](https://github.com/umlaeute/v4l2loopback#options) are available
-to create several devices or devices with specific IDs).
-
-To list the enabled devices:
-
-```bash
-# requires v4l-utils package
-v4l2-ctl --list-devices
-
-# simple but might be sufficient
-ls /dev/video*
-```
-
-To start scrcpy using a v4l2 sink:
-
-```bash
-scrcpy --v4l2-sink=/dev/videoN
-scrcpy --v4l2-sink=/dev/videoN -N  # --no-display to disable mirroring window
-```
-
-(replace `N` by the device ID, check with `ls /dev/video*`)
-
-Once enabled, you can open your video stream with a v4l2-capable tool:
-
-```bash
-ffplay -i /dev/videoN
-vlc v4l2:///dev/videoN   # VLC might add some buffering delay
-```
-
-For example, you could capture the video within [OBS].
-
-[OBS]: https://obsproject.com/fr
-
-
 ### Connection

 #### Wireless
@ -546,6 +491,18 @@ scrcpy -Sw
 ```


+#### Render expired frames
+
+By default, to minimize latency, _scrcpy_ always renders the last decoded frame
+available, and drops any previous one.
+
+To force the rendering of all frames (at a cost of a possible increased
+latency), use:
+
+```bash
+scrcpy --render-expired-frames
+```
+
 #### Show touches

 For presentations, it may be useful to show physical touches (on the physical
@ -741,10 +698,10 @@ _<kbd>[Super]</kbd> is typically the <kbd>Windows</kbd> or <kbd>Cmd</kbd> key._
 | Rotate display left                         | <kbd>MOD</kbd>+<kbd>←</kbd> _(left)_
 | Rotate display right                        | <kbd>MOD</kbd>+<kbd>→</kbd> _(right)_
 | Resize window to 1:1 (pixel-perfect)        | <kbd>MOD</kbd>+<kbd>g</kbd>
- | Resize window to remove black borders       | <kbd>MOD</kbd>+<kbd>w</kbd> \| _Double-left-click¹_
+ | Resize window to remove black borders       | <kbd>MOD</kbd>+<kbd>w</kbd> \| _Double-click¹_
 | Click on `HOME`                             | <kbd>MOD</kbd>+<kbd>h</kbd> \| _Middle-click_
 | Click on `BACK`                             | <kbd>MOD</kbd>+<kbd>b</kbd> \| _Right-click²_
- | Click on `APP_SWITCH`                       | <kbd>MOD</kbd>+<kbd>s</kbd> \| _4th-click³_
+ | Click on `APP_SWITCH`                       | <kbd>MOD</kbd>+<kbd>s</kbd>
 | Click on `MENU` (unlock screen)             | <kbd>MOD</kbd>+<kbd>m</kbd>
 | Click on `VOLUME_UP`                        | <kbd>MOD</kbd>+<kbd>↑</kbd> _(up)_
 | Click on `VOLUME_DOWN`                      | <kbd>MOD</kbd>+<kbd>↓</kbd> _(down)_
@ -753,27 +710,18 @@ _<kbd>[Super]</kbd> is typically the <kbd>Windows</kbd> or <kbd>Cmd</kbd> key._
 | Turn device screen off (keep mirroring)     | <kbd>MOD</kbd>+<kbd>o</kbd>
 | Turn device screen on                       | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>
 | Rotate device screen                        | <kbd>MOD</kbd>+<kbd>r</kbd>
- | Expand notification panel                   | <kbd>MOD</kbd>+<kbd>n</kbd> \| _5th-click³_
- | Expand settings panel                       |  <kbd>MOD</kbd>+<kbd>n</kbd>+<kbd>n</kbd> \| _Double-5th-click³_
- | Collapse panels                             | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
- | Copy to clipboard⁴                          | <kbd>MOD</kbd>+<kbd>c</kbd>
- | Cut to clipboard⁴                           | <kbd>MOD</kbd>+<kbd>x</kbd>
- | Synchronize clipboards and paste⁴           | <kbd>MOD</kbd>+<kbd>v</kbd>
+ | Expand notification panel                   | <kbd>MOD</kbd>+<kbd>n</kbd>
+ | Collapse notification panel                 | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>n</kbd>
+ | Copy to clipboard³                          | <kbd>MOD</kbd>+<kbd>c</kbd>
+ | Cut to clipboard³                           | <kbd>MOD</kbd>+<kbd>x</kbd>
+ | Synchronize clipboards and paste³           | <kbd>MOD</kbd>+<kbd>v</kbd>
 | Inject computer clipboard text              | <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd>
 | Enable/disable FPS counter (on stdout)      | <kbd>MOD</kbd>+<kbd>i</kbd>
 | Pinch-to-zoom                               | <kbd>Ctrl</kbd>+_click-and-move_

 _¹Double-click on black borders to remove them._  
 _²Right-click turns the screen on if it was off, presses BACK otherwise._  
-_³4th and 5th mouse buttons, if your mouse has them._  
-_⁴Only on Android >= 7._
-
-Shortcuts with repeated keys are executted by releasing and pressing the key a
-second time. For example, to execute "Expand settings panel":
-
- 1. Press and keep pressing <kbd>MOD</kbd>.
- 2. Then double-press <kbd>n</kbd>.
- 3. Finally, release <kbd>MOD</kbd>.
+_³Only on Android >= 7._

 All <kbd>Ctrl</kbd>+_key_ shortcuts are forwarded to the device, so they are
 handled by the active application.
--- a/app/meson.build
+++ b/app/meson.build
@ -33,11 +33,6 @@ else
    src += [ 'src/sys/unix/process.c' ]
 endif

-v4l2_support = host_machine.system() == 'linux'
-if v4l2_support
-    src += [ 'src/v4l2_sink.c' ]
-endif
-
 check_functions = [
    'strdup'
 ]
@ -54,10 +49,6 @@ if not get_option('crossbuild_windows')
        dependency('sdl2'),
    ]

-    if v4l2_support
-        dependencies += dependency('libavdevice')
-    endif
-
 else

    # cross-compile mingw32 build (from Linux to Windows)
@ -108,6 +99,9 @@ foreach f : check_functions
  endif
 endforeach

+# expose the build type
+conf.set('NDEBUG', get_option('buildtype') != 'debug')
+
 # the version, updated on release
 conf.set_quoted('SCRCPY_VERSION', meson.project_version())

@ -123,19 +117,29 @@ conf.set('PORTABLE', get_option('portable'))
 conf.set('DEFAULT_LOCAL_PORT_RANGE_FIRST', '27183')
 conf.set('DEFAULT_LOCAL_PORT_RANGE_LAST', '27199')

+# the default max video size for both dimensions, in pixels
+# overridden by option --max-size
+conf.set('DEFAULT_MAX_SIZE', '0')  # 0: unlimited
+
+# the default video orientation
+# natural device orientation is 0 and each increment adds 90 degrees
+# counterclockwise
+# overridden by option --lock-video-orientation
+conf.set('DEFAULT_LOCK_VIDEO_ORIENTATION', '-1')  # -1: unlocked
+
 # the default video bitrate, in bits/second
 # overridden by option --bit-rate
 conf.set('DEFAULT_BIT_RATE', '8000000')  # 8Mbps

+# enable High DPI support
+conf.set('HIDPI_SUPPORT', get_option('hidpi_support'))
+
 # run a server debugger and wait for a client to be attached
 conf.set('SERVER_DEBUGGER', get_option('server_debugger'))

 # select the debugger method ('old' for Android < 9, 'new' for Android >= 9)
 conf.set('SERVER_DEBUGGER_METHOD_NEW', get_option('server_debugger_method') == 'new')

-# enable V4L2 support (linux only)
-conf.set('HAVE_V4L2', v4l2_support)
-
 configure_file(configuration: conf, output: 'config.h')

 src_dir = include_directories('src')
--- a/app/scrcpy.1
+++ b/app/scrcpy.1
@ -83,12 +83,10 @@ Inject computer clipboard text as a sequence of key events on Ctrl+v (like MOD+S
 This is a workaround for some devices not behaving as expected when setting the device clipboard programmatically.

 .TP
-.BI "\-\-lock\-video\-orientation " [value]
-Lock video orientation to \fIvalue\fR. Possible values are "unlocked", "initial" (locked to the initial orientation), 0, 1, 2 and 3. Natural device orientation is 0, and each increment adds a 90 degrees otation counterclockwise.
+.BI "\-\-lock\-video\-orientation " value
+Lock video orientation to \fIvalue\fR. Possible values are -1 (unlocked), 0, 1, 2 and 3. Natural device orientation is 0, and each increment adds a 90 degrees otation counterclockwise.

-Default is "unlocked".
-
-Passing the option without argument is equivalent to passing "initial".
+Default is -1 (unlocked).

 .TP
 .BI "\-\-max\-fps " value
@ -157,6 +155,10 @@ Supported names are currently "direct3d", "opengl", "opengles2", "opengles", "me
 .UR https://wiki.libsdl.org/SDL_HINT_RENDER_DRIVER
 .UE

+.TP
+.B \-\-render\-expired\-frames
+By default, to minimize latency, scrcpy always renders the last available decoded frame, and drops any previous ones. This flag forces to render all frames, at a cost of a possible increased latency.
+
 .TP
 .BI "\-\-rotation " value
 Set the initial display rotation. Possibles values are 0, 1, 2 and 3. Each increment adds a 90 degrees rotation counterclockwise.
@ -186,10 +188,8 @@ Enable "show touches" on start, restore the initial value on exit.
 It only shows physical touches (not clicks from scrcpy).

 .TP
-.BI "\-\-v4l2-sink " /dev/videoN
-Output to v4l2loopback device.
-
-It requires to lock the video orientation (see --lock-video-orientation).
+.B \-v, \-\-version
+Print the version of scrcpy.

 .TP
 .BI "\-V, \-\-verbosity " value
@ -197,10 +197,6 @@ Set the log level ("debug", "info", "warn" or "error").

 Default is "info" for release builds, "debug" for debug builds.

-.TP
-.B \-v, \-\-version
-Print the version of scrcpy.
-
 .TP
 .B \-w, \-\-stay-awake
 Keep the device on while scrcpy is running, when the device is plugged in.
--- a/app/src/cli.c
+++ b/app/src/cli.c
@ -10,9 +10,6 @@
 #include "util/log.h"
 #include "util/str_util.h"

-#define STR_IMPL_(x) #x
-#define STR(x) STR_IMPL_(x)
-
 void
 scrcpy_print_usage(const char *arg0) {
    fprintf(stderr,
@ -26,7 +23,7 @@ scrcpy_print_usage(const char *arg0) {
        "    -b, --bit-rate value\n"
        "        Encode the video at the given bit-rate, expressed in bits/s.\n"
        "        Unit suffixes are supported: 'K' (x1000) and 'M' (x1000000).\n"
-        "        Default is " STR(DEFAULT_BIT_RATE) ".\n"
+        "        Default is %d.\n"
        "\n"
        "    --codec-options key[:type]=value[,...]\n"
        "        Set a list of comma-separated key:type=value options for the\n"
@ -79,15 +76,12 @@ scrcpy_print_usage(const char *arg0) {
        "        This is a workaround for some devices not behaving as\n"
        "        expected when setting the device clipboard programmatically.\n"
        "\n"
-        "    --lock-video-orientation [value]\n"
+        "    --lock-video-orientation value\n"
        "        Lock video orientation to value.\n"
-        "        Possible values are \"unlocked\", \"initial\" (locked to the\n"
-        "        initial orientation), 0, 1, 2 and 3.\n"
+        "        Possible values are -1 (unlocked), 0, 1, 2 and 3.\n"
        "        Natural device orientation is 0, and each increment adds a\n"
        "        90 degrees rotation counterclockwise.\n"
-        "        Default is \"unlocked\".\n"
-        "        Passing the option without argument is equivalent to passing\n"
-        "        \"initial\".\n"
+        "        Default is %d%s.\n"
        "\n"
        "    --max-fps value\n"
        "        Limit the frame rate of screen capture (officially supported\n"
@ -97,7 +91,7 @@ scrcpy_print_usage(const char *arg0) {
        "        Limit both the width and height of the video to value. The\n"
        "        other dimension is computed so that the device aspect-ratio\n"
        "        is preserved.\n"
-        "        Default is 0 (unlimited).\n"
+        "        Default is %d%s.\n"
        "\n"
        "    -n, --no-control\n"
        "        Disable device control (mirror the device in read-only).\n"
@ -116,8 +110,7 @@ scrcpy_print_usage(const char *arg0) {
        "\n"
        "    -p, --port port[:port]\n"
        "        Set the TCP port (range) used by the client to listen.\n"
-        "        Default is " STR(DEFAULT_LOCAL_PORT_RANGE_FIRST) ":"
-                              STR(DEFAULT_LOCAL_PORT_RANGE_LAST) ".\n"
+        "        Default is %d:%d.\n"
        "\n"
        "    --prefer-text\n"
        "        Inject alpha characters and space as text events instead of\n"
@ -146,6 +139,12 @@ scrcpy_print_usage(const char *arg0) {
        "        \"opengles2\", \"opengles\", \"metal\" and \"software\".\n"
        "        <https://wiki.libsdl.org/SDL_HINT_RENDER_DRIVER>\n"
        "\n"
+        "    --render-expired-frames\n"
+        "        By default, to minimize latency, scrcpy always renders the\n"
+        "        last available decoded frame, and drops any previous ones.\n"
+        "        This flag forces to render all frames, at a cost of a\n"
+        "        possible increased latency.\n"
+        "\n"
        "    --rotation value\n"
        "        Set the initial display rotation.\n"
        "        Possibles values are 0, 1, 2 and 3. Each increment adds a 90\n"
@ -176,13 +175,9 @@ scrcpy_print_usage(const char *arg0) {
        "        on exit.\n"
        "        It only shows physical touches (not clicks from scrcpy).\n"
        "\n"
-#ifdef HAVE_V4L2
-        "    --v4l2-sink /dev/videoN\n"
-        "        Output to v4l2loopback device.\n"
-        "        It requires to lock the video orientation (see\n"
-        "        --lock-video-orientation).\n"
+        "    -v, --version\n"
+        "        Print the version of scrcpy.\n"
        "\n"
-#endif
        "    -V, --verbosity value\n"
        "        Set the log level (debug, info, warn or error).\n"
 #ifndef NDEBUG
@ -190,9 +185,6 @@ scrcpy_print_usage(const char *arg0) {
 #else
        "        Default is info.\n"
 #endif
-        "\n"
-        "    -v, --version\n"
-        "        Print the version of scrcpy.\n"
        "\n"
        "    -w, --stay-awake\n"
        "        Keep the device on while scrcpy is running, when the device\n"
@ -305,7 +297,12 @@ scrcpy_print_usage(const char *arg0) {
        "\n"
        "    Drag & drop APK file\n"
        "        Install APK from computer\n"
-        "\n", arg0);
+        "\n",
+        arg0,
+        DEFAULT_BIT_RATE,
+        DEFAULT_LOCK_VIDEO_ORIENTATION, DEFAULT_LOCK_VIDEO_ORIENTATION >= 0 ? "" : " (unlocked)",
+        DEFAULT_MAX_SIZE, DEFAULT_MAX_SIZE ? "" : " (unlimited)",
+        DEFAULT_LOCAL_PORT_RANGE_FIRST, DEFAULT_LOCAL_PORT_RANGE_LAST);
 }

 static bool
@ -393,27 +390,15 @@ parse_max_fps(const char *s, uint16_t *max_fps) {
 }

 static bool
-parse_lock_video_orientation(const char *s,
-                             enum sc_lock_video_orientation *lock_mode) {
-    if (!s || !strcmp(s, "initial")) {
-        // Without argument, lock the initial orientation
-        *lock_mode = SC_LOCK_VIDEO_ORIENTATION_INITIAL;
-        return true;
-    }
-
-    if (!strcmp(s, "unlocked")) {
-        *lock_mode = SC_LOCK_VIDEO_ORIENTATION_UNLOCKED;
-        return true;
-    }
-
+parse_lock_video_orientation(const char *s, int8_t *lock_video_orientation) {
    long value;
-    bool ok = parse_integer_arg(s, &value, false, 0, 3,
+    bool ok = parse_integer_arg(s, &value, false, -1, 3,
                                "lock video orientation");
    if (!ok) {
        return false;
    }

-    *lock_mode = (enum sc_lock_video_orientation) value;
+    *lock_video_orientation = (int8_t) value;
    return true;
 }

@ -682,8 +667,6 @@ guess_record_format(const char *filename) {
 #define OPT_FORWARD_ALL_CLICKS     1023
 #define OPT_LEGACY_PASTE           1024
 #define OPT_ENCODER_NAME           1025
-#define OPT_POWER_OFF_ON_CLOSE     1026
-#define OPT_V4L2_SINK              1027

 bool
 scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
@ -703,7 +686,7 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
        {"fullscreen",             no_argument,       NULL, 'f'},
        {"help",                   no_argument,       NULL, 'h'},
        {"legacy-paste",           no_argument,       NULL, OPT_LEGACY_PASTE},
-        {"lock-video-orientation", optional_argument, NULL,
+        {"lock-video-orientation", required_argument, NULL,
                                                  OPT_LOCK_VIDEO_ORIENTATION},
        {"max-fps",                required_argument, NULL, OPT_MAX_FPS},
        {"max-size",               required_argument, NULL, 'm'},
@ -725,9 +708,6 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
        {"show-touches",           no_argument,       NULL, 't'},
        {"stay-awake",             no_argument,       NULL, 'w'},
        {"turn-screen-off",        no_argument,       NULL, 'S'},
-#ifdef HAVE_V4L2
-        {"v4l2-sink",              required_argument, NULL, OPT_V4L2_SINK},
-#endif
        {"verbosity",              required_argument, NULL, 'V'},
        {"version",                no_argument,       NULL, 'v'},
        {"window-title",           required_argument, NULL, OPT_WINDOW_TITLE},
@ -737,8 +717,6 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
        {"window-height",          required_argument, NULL, OPT_WINDOW_HEIGHT},
        {"window-borderless",      no_argument,       NULL,
                                                  OPT_WINDOW_BORDERLESS},
-        {"power-off-on-close",     no_argument,       NULL,
-                                                  OPT_POWER_OFF_ON_CLOSE},
        {NULL,                     0,                 NULL, 0  },
    };

@ -791,8 +769,7 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
                }
                break;
            case OPT_LOCK_VIDEO_ORIENTATION:
-                if (!parse_lock_video_orientation(optarg,
-                        &opts->lock_video_orientation)) {
+                if (!parse_lock_video_orientation(optarg, &opts->lock_video_orientation)) {
                    return false;
                }
                break;
@ -837,8 +814,7 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
                opts->stay_awake = true;
                break;
            case OPT_RENDER_EXPIRED_FRAMES:
-                LOGW("Option --render-expired-frames has been removed. This "
-                     "flag has been ignored.");
+                opts->render_expired_frames = true;
                break;
            case OPT_WINDOW_TITLE:
                opts->window_title = optarg;
@ -909,39 +885,16 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
            case OPT_LEGACY_PASTE:
                opts->legacy_paste = true;
                break;
-            case OPT_POWER_OFF_ON_CLOSE:
-                opts->power_off_on_close = true;
-                break;
-#ifdef HAVE_V4L2
-            case OPT_V4L2_SINK:
-                opts->v4l2_device = optarg;
-                break;
-#endif
            default:
                // getopt prints the error message on stderr
                return false;
        }
    }

-#ifdef HAVE_V4L2
-    if (!opts->display && !opts->record_filename && !opts->v4l2_device) {
-        LOGE("-N/--no-display requires either screen recording (-r/--record)"
-             " or sink to v4l2loopback device (--v4l2-sink)");
-        return false;
-    }
-
-    if (opts->v4l2_device && opts->lock_video_orientation
-                             == SC_LOCK_VIDEO_ORIENTATION_UNLOCKED) {
-        LOGI("Video orientation is locked for v4l2 sink. "
-             "See --lock-video-orientation.");
-        opts->lock_video_orientation = SC_LOCK_VIDEO_ORIENTATION_INITIAL;
-    }
-#else
    if (!opts->display && !opts->record_filename) {
        LOGE("-N/--no-display requires screen recording (-r/--record)");
        return false;
    }
-#endif

    int index = optind;
    if (index < argc) {
--- a/app/src/common.h
+++ b/app/src/common.h
@ -8,7 +8,4 @@
 #define MIN(X,Y) (X) < (Y) ? (X) : (Y)
 #define MAX(X,Y) (X) > (Y) ? (X) : (Y)

-#define container_of(ptr, type, member) \
-    ((type *) (((char *) (ptr)) - offsetof(type, member)))
-
 #endif
--- a/app/src/compat.h
+++ b/app/src/compat.h
@ -8,9 +8,20 @@
 # define _DARWIN_C_SOURCE
 #endif

+#include <libavcodec/version.h>
 #include <libavformat/version.h>
 #include <SDL2/SDL_version.h>

+// In ffmpeg/doc/APIchanges:
+// 2016-04-11 - 6f69f7a / 9200514 - lavf 57.33.100 / 57.5.0 - avformat.h
+//   Add AVStream.codecpar, deprecate AVStream.codec.
+#if    (LIBAVFORMAT_VERSION_MICRO >= 100 /* FFmpeg */ && \
+        LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(57, 33, 100)) \
+    || (LIBAVFORMAT_VERSION_MICRO < 100 && /* Libav */ \
+        LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(57, 5, 0))
+# define SCRCPY_LAVF_HAS_NEW_CODEC_PARAMS_API
+#endif
+
 // In ffmpeg/doc/APIchanges:
 // 2018-02-06 - 0694d87024 - lavf 58.9.100 - avformat.h
 //   Deprecate use of av_register_input_format(), av_register_output_format(),
@ -22,6 +33,15 @@
 # define SCRCPY_LAVF_REQUIRES_REGISTER_ALL
 #endif

+// In ffmpeg/doc/APIchanges:
+// 2016-04-21 - 7fc329e - lavc 57.37.100 - avcodec.h
+//   Add a new audio/video encoding and decoding API with decoupled input
+//   and output -- avcodec_send_packet(), avcodec_receive_frame(),
+//   avcodec_send_frame() and avcodec_receive_packet().
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 37, 100)
+# define SCRCPY_LAVF_HAS_NEW_ENCODING_DECODING_API
+#endif
+
 #if SDL_VERSION_ATLEAST(2, 0, 5)
 // <https://wiki.libsdl.org/SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH>
 # define SCRCPY_SDL_HAS_HINT_MOUSE_FOCUS_CLICKTHROUGH
@ -36,7 +56,7 @@
 # define SCRCPY_SDL_HAS_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR
 #endif

-#ifndef HAVE_STRDUP
+#ifdef HAVE_STRDUP
 char *strdup(const char *s);
 #endif

--- a/app/src/control_msg.c
+++ b/app/src/control_msg.c
@ -67,9 +67,6 @@ control_msg_serialize(const struct control_msg *msg, unsigned char *buf) {
            buffer_write32be(&buf[17],
                             (uint32_t) msg->inject_scroll_event.vscroll);
            return 21;
-        case CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON:
-            buf[1] = msg->inject_keycode.action;
-            return 2;
        case CONTROL_MSG_TYPE_SET_CLIPBOARD: {
            buf[1] = !!msg->set_clipboard.paste;
            size_t len = write_string(msg->set_clipboard.text,
@ -80,9 +77,9 @@ control_msg_serialize(const struct control_msg *msg, unsigned char *buf) {
        case CONTROL_MSG_TYPE_SET_SCREEN_POWER_MODE:
            buf[1] = msg->set_screen_power_mode.mode;
            return 2;
+        case CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON:
        case CONTROL_MSG_TYPE_EXPAND_NOTIFICATION_PANEL:
-        case CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL:
-        case CONTROL_MSG_TYPE_COLLAPSE_PANELS:
+        case CONTROL_MSG_TYPE_COLLAPSE_NOTIFICATION_PANEL:
        case CONTROL_MSG_TYPE_GET_CLIPBOARD:
        case CONTROL_MSG_TYPE_ROTATE_DEVICE:
            // no additional data
--- a/app/src/control_msg.h
+++ b/app/src/control_msg.h
@ -27,8 +27,7 @@ enum control_msg_type {
    CONTROL_MSG_TYPE_INJECT_SCROLL_EVENT,
    CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON,
    CONTROL_MSG_TYPE_EXPAND_NOTIFICATION_PANEL,
-    CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL,
-    CONTROL_MSG_TYPE_COLLAPSE_PANELS,
+    CONTROL_MSG_TYPE_COLLAPSE_NOTIFICATION_PANEL,
    CONTROL_MSG_TYPE_GET_CLIPBOARD,
    CONTROL_MSG_TYPE_SET_CLIPBOARD,
    CONTROL_MSG_TYPE_SET_SCREEN_POWER_MODE,
@ -65,10 +64,6 @@ struct control_msg {
            int32_t hscroll;
            int32_t vscroll;
        } inject_scroll_event;
-        struct {
-            enum android_keyevent_action action; // action for the BACK key
-            // screen may only be turned on on ACTION_DOWN
-        } back_or_screen_on;
        struct {
            char *text; // owned, to be freed by free()
            bool paste;
--- a/app/src/decoder.c
+++ b/app/src/decoder.c
@ -1,43 +1,41 @@
 #include "decoder.h"

 #include <libavformat/avformat.h>
+#include <libavutil/time.h>
+#include <unistd.h>

 #include "events.h"
+#include "recorder.h"
 #include "video_buffer.h"
-#include "trait/frame_sink.h"
+#include "util/buffer_util.h"
 #include "util/log.h"

-/** Downcast packet_sink to decoder */
-#define DOWNCAST(SINK) container_of(SINK, struct decoder, packet_sink)
-
+// set the decoded frame as ready for rendering, and notify
 static void
-decoder_close_first_sinks(struct decoder *decoder, unsigned count) {
-    while (count) {
-        struct sc_frame_sink *sink = decoder->sinks[--count];
-        sink->ops->close(sink);
-    }
-}
-
-static inline void
-decoder_close_sinks(struct decoder *decoder) {
-    decoder_close_first_sinks(decoder, decoder->sink_count);
-}
-
-static bool
-decoder_open_sinks(struct decoder *decoder) {
-    for (unsigned i = 0; i < decoder->sink_count; ++i) {
-        struct sc_frame_sink *sink = decoder->sinks[i];
-        if (!sink->ops->open(sink)) {
-            LOGE("Could not open frame sink %d", i);
-            decoder_close_first_sinks(decoder, i);
-            return false;
-        }
+push_frame(struct decoder *decoder) {
+    bool previous_frame_skipped;
+    video_buffer_offer_decoded_frame(decoder->video_buffer,
+                                     &previous_frame_skipped);
+    if (previous_frame_skipped) {
+        // the previous callback will consume this frame
+        return;
    }

-    return true;
+    decoder->cbs->on_new_frame(decoder, decoder->cbs_userdata);
 }

-static bool
+void
+decoder_init(struct decoder *decoder, struct video_buffer *vb,
+             const struct decoder_callbacks *cbs, void *cbs_userdata) {
+    decoder->video_buffer = vb;
+
+    assert(cbs);
+    assert(cbs->on_new_frame);
+    decoder->cbs = cbs;
+    decoder->cbs_userdata = cbs_userdata;
+}
+
+bool
 decoder_open(struct decoder *decoder, const AVCodec *codec) {
    decoder->codec_ctx = avcodec_alloc_context3(codec);
    if (!decoder->codec_ctx) {
@ -51,108 +49,52 @@ decoder_open(struct decoder *decoder, const AVCodec *codec) {
        return false;
    }

-    decoder->frame = av_frame_alloc();
-    if (!decoder->frame) {
-        LOGE("Could not create decoder frame");
-        avcodec_close(decoder->codec_ctx);
-        avcodec_free_context(&decoder->codec_ctx);
-        return false;
-    }
-
-    if (!decoder_open_sinks(decoder)) {
-        LOGE("Could not open decoder sinks");
-        av_frame_free(&decoder->frame);
-        avcodec_close(decoder->codec_ctx);
-        avcodec_free_context(&decoder->codec_ctx);
-        return false;
-    }
-
    return true;
 }

-static void
+void
 decoder_close(struct decoder *decoder) {
-    decoder_close_sinks(decoder);
-    av_frame_free(&decoder->frame);
    avcodec_close(decoder->codec_ctx);
    avcodec_free_context(&decoder->codec_ctx);
 }

-static bool
-push_frame_to_sinks(struct decoder *decoder, const AVFrame *frame) {
-    for (unsigned i = 0; i < decoder->sink_count; ++i) {
-        struct sc_frame_sink *sink = decoder->sinks[i];
-        if (!sink->ops->push(sink, frame)) {
-            LOGE("Could not send frame to sink %d", i);
-            return false;
-        }
-    }
-
-    return true;
-}
-
-static bool
+bool
 decoder_push(struct decoder *decoder, const AVPacket *packet) {
-    bool is_config = packet->pts == AV_NOPTS_VALUE;
-    if (is_config) {
-        // nothing to do
-        return true;
-    }
-
-    int ret = avcodec_send_packet(decoder->codec_ctx, packet);
-    if (ret < 0 && ret != AVERROR(EAGAIN)) {
+// the new decoding/encoding API has been introduced by:
+// <http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=7fc329e2dd6226dfecaa4a1d7adf353bf2773726>
+#ifdef SCRCPY_LAVF_HAS_NEW_ENCODING_DECODING_API
+    int ret;
+    if ((ret = avcodec_send_packet(decoder->codec_ctx, packet)) < 0) {
        LOGE("Could not send video packet: %d", ret);
        return false;
    }
-    ret = avcodec_receive_frame(decoder->codec_ctx, decoder->frame);
+    ret = avcodec_receive_frame(decoder->codec_ctx,
+                                decoder->video_buffer->decoding_frame);
    if (!ret) {
        // a frame was received
-        bool ok = push_frame_to_sinks(decoder, decoder->frame);
-        // A frame lost should not make the whole pipeline fail. The error, if
-        // any, is already logged.
-        (void) ok;
-
-        av_frame_unref(decoder->frame);
+        push_frame(decoder);
    } else if (ret != AVERROR(EAGAIN)) {
        LOGE("Could not receive video frame: %d", ret);
        return false;
    }
+#else
+    int got_picture;
+    int len = avcodec_decode_video2(decoder->codec_ctx,
+                                    decoder->video_buffer->decoding_frame,
+                                    &got_picture,
+                                    packet);
+    if (len < 0) {
+        LOGE("Could not decode video packet: %d", len);
+        return false;
+    }
+    if (got_picture) {
+        push_frame(decoder);
+    }
+#endif
    return true;
 }

-static bool
-decoder_packet_sink_open(struct sc_packet_sink *sink, const AVCodec *codec) {
-    struct decoder *decoder = DOWNCAST(sink);
-    return decoder_open(decoder, codec);
-}
-
-static void
-decoder_packet_sink_close(struct sc_packet_sink *sink) {
-    struct decoder *decoder = DOWNCAST(sink);
-    decoder_close(decoder);
-}
-
-static bool
-decoder_packet_sink_push(struct sc_packet_sink *sink, const AVPacket *packet) {
-    struct decoder *decoder = DOWNCAST(sink);
-    return decoder_push(decoder, packet);
-}
-
 void
-decoder_init(struct decoder *decoder) {
-    static const struct sc_packet_sink_ops ops = {
-        .open = decoder_packet_sink_open,
-        .close = decoder_packet_sink_close,
-        .push = decoder_packet_sink_push,
-    };
-
-    decoder->packet_sink.ops = &ops;
-}
-
-void
-decoder_add_sink(struct decoder *decoder, struct sc_frame_sink *sink) {
-    assert(decoder->sink_count < DECODER_MAX_SINKS);
-    assert(sink);
-    assert(sink->ops);
-    decoder->sinks[decoder->sink_count++] = sink;
+decoder_interrupt(struct decoder *decoder) {
+    video_buffer_interrupt(decoder->video_buffer);
 }
--- a/app/src/decoder.h
+++ b/app/src/decoder.h
@ -3,27 +3,39 @@

 #include "common.h"

-#include "trait/packet_sink.h"
-
 #include <stdbool.h>
 #include <libavformat/avformat.h>

-#define DECODER_MAX_SINKS 2
+struct video_buffer;

 struct decoder {
-    struct sc_packet_sink packet_sink; // packet sink trait
-
-    struct sc_frame_sink *sinks[DECODER_MAX_SINKS];
-    unsigned sink_count;
-
+    struct video_buffer *video_buffer;
    AVCodecContext *codec_ctx;
-    AVFrame *frame;
+
+    const struct decoder_callbacks *cbs;
+    void *cbs_userdata;
+};
+
+struct decoder_callbacks {
+     // Called when a new frame can be consumed by
+     // video_buffer_take_rendering_frame(decoder->video_buffer).
+    void (*on_new_frame)(struct decoder *decoder, void *userdata);
 };

 void
-decoder_init(struct decoder *decoder);
+decoder_init(struct decoder *decoder, struct video_buffer *vb,
+             const struct decoder_callbacks *cbs, void *cbs_userdata);
+
+bool
+decoder_open(struct decoder *decoder, const AVCodec *codec);

 void
-decoder_add_sink(struct decoder *decoder, struct sc_frame_sink *sink);
+decoder_close(struct decoder *decoder);
+
+bool
+decoder_push(struct decoder *decoder, const AVPacket *packet);
+
+void
+decoder_interrupt(struct decoder *decoder);

 #endif
--- a/app/src/input_manager.c
+++ b/app/src/input_manager.c
@ -72,10 +72,6 @@ input_manager_init(struct input_manager *im,
    im->sdl_shortcut_mods.count = shortcut_mods->count;

    im->vfinger_down = false;
-
-    im->last_keycode = SDLK_UNKNOWN;
-    im->last_mod = 0;
-    im->key_repeat = 0;
 }

 static void
@ -150,25 +146,13 @@ action_cut(struct controller *controller, int actions) {
 }

 // turn the screen on if it was off, press BACK otherwise
-// If the screen is off, it is turned on only on ACTION_DOWN
 static void
-press_back_or_turn_screen_on(struct controller *controller, int actions) {
+press_back_or_turn_screen_on(struct controller *controller) {
    struct control_msg msg;
    msg.type = CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON;

-    if (actions & ACTION_DOWN) {
-        msg.back_or_screen_on.action = AKEY_EVENT_ACTION_DOWN;
-        if (!controller_push_msg(controller, &msg)) {
-            LOGW("Could not request 'press back or turn screen on'");
-            return;
-        }
-    }
-
-    if (actions & ACTION_UP) {
-        msg.back_or_screen_on.action = AKEY_EVENT_ACTION_UP;
-        if (!controller_push_msg(controller, &msg)) {
-            LOGW("Could not request 'press back or turn screen on'");
-        }
+    if (!controller_push_msg(controller, &msg)) {
+        LOGW("Could not request 'press back or turn screen on'");
    }
 }

@ -183,19 +167,9 @@ expand_notification_panel(struct controller *controller) {
 }

 static void
-expand_settings_panel(struct controller *controller) {
+collapse_notification_panel(struct controller *controller) {
    struct control_msg msg;
-    msg.type = CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL;
-
-    if (!controller_push_msg(controller, &msg)) {
-        LOGW("Could not request 'expand settings panel'");
-    }
-}
-
-static void
-collapse_panels(struct controller *controller) {
-    struct control_msg msg;
-    msg.type = CONTROL_MSG_TYPE_COLLAPSE_PANELS;
+    msg.type = CONTROL_MSG_TYPE_COLLAPSE_NOTIFICATION_PANEL;

    if (!controller_push_msg(controller, &msg)) {
        LOGW("Could not request 'collapse notification panel'");
@ -312,7 +286,7 @@ rotate_client_right(struct screen *screen) {
    screen_set_rotation(screen, new_rotation);
 }

-static void
+void
 input_manager_process_text_input(struct input_manager *im,
                                 const SDL_TextInputEvent *event) {
    if (is_shortcut_mod(im, SDL_GetModState())) {
@ -392,33 +366,22 @@ convert_input_key(const SDL_KeyboardEvent *from, struct control_msg *to,
    return true;
 }

-static void
+void
 input_manager_process_key(struct input_manager *im,
                          const SDL_KeyboardEvent *event) {
    // control: indicates the state of the command-line option --no-control
    bool control = im->control;

+    bool smod = is_shortcut_mod(im, event->keysym.mod);
+
    struct controller *controller = im->controller;

    SDL_Keycode keycode = event->keysym.sym;
-    uint16_t mod = event->keysym.mod;
    bool down = event->type == SDL_KEYDOWN;
    bool ctrl = event->keysym.mod & KMOD_CTRL;
    bool shift = event->keysym.mod & KMOD_SHIFT;
    bool repeat = event->repeat;

-    bool smod = is_shortcut_mod(im, mod);
-
-    if (down && !repeat) {
-        if (keycode == im->last_keycode && mod == im->last_mod) {
-            ++im->key_repeat;
-        } else {
-            im->key_repeat = 0;
-            im->last_keycode = keycode;
-            im->last_mod = mod;
-        }
-    }
-
    // The shortcut modifier is pressed
    if (smod) {
        int action = down ? ACTION_DOWN : ACTION_UP;
@ -517,17 +480,17 @@ input_manager_process_key(struct input_manager *im,
                return;
            case SDLK_i:
                if (!shift && !repeat && down) {
-                    switch_fps_counter_state(im->fps_counter);
+                    struct fps_counter *fps_counter =
+                        im->video_buffer->fps_counter;
+                    switch_fps_counter_state(fps_counter);
                }
                return;
            case SDLK_n:
                if (control && !repeat && down) {
                    if (shift) {
-                        collapse_panels(controller);
-                    } else if (im->key_repeat == 0) {
-                        expand_notification_panel(controller);
+                        collapse_notification_panel(controller);
                    } else {
-                        expand_settings_panel(controller);
+                        expand_notification_panel(controller);
                    }
                }
                return;
@ -588,7 +551,7 @@ convert_mouse_motion(const SDL_MouseMotionEvent *from, struct screen *screen,
    return true;
 }

-static void
+void
 input_manager_process_mouse_motion(struct input_manager *im,
                                   const SDL_MouseMotionEvent *event) {
    if (!event->state) {
@ -642,7 +605,7 @@ convert_touch(const SDL_TouchFingerEvent *from, struct screen *screen,
    return true;
 }

-static void
+void
 input_manager_process_touch(struct input_manager *im,
                            const SDL_TouchFingerEvent *event) {
    struct control_msg msg;
@ -674,7 +637,7 @@ convert_mouse_button(const SDL_MouseButtonEvent *from, struct screen *screen,
    return true;
 }

-static void
+void
 input_manager_process_mouse_button(struct input_manager *im,
                                   const SDL_MouseButtonEvent *event) {
    bool control = im->control;
@ -685,27 +648,13 @@ input_manager_process_mouse_button(struct input_manager *im,
    }

    bool down = event->type == SDL_MOUSEBUTTONDOWN;
-    if (!im->forward_all_clicks) {
-        int action = down ? ACTION_DOWN : ACTION_UP;
-
-        if (control && event->button == SDL_BUTTON_X1) {
-            action_app_switch(im->controller, action);
-            return;
-        }
-        if (control && event->button == SDL_BUTTON_X2 && down) {
-            if (event->clicks < 2) {
-                expand_notification_panel(im->controller);
-            } else {
-                expand_settings_panel(im->controller);
-            }
-            return;
-        }
+    if (!im->forward_all_clicks && down) {
        if (control && event->button == SDL_BUTTON_RIGHT) {
-            press_back_or_turn_screen_on(im->controller, action);
+            press_back_or_turn_screen_on(im->controller);
            return;
        }
        if (control && event->button == SDL_BUTTON_MIDDLE) {
-            action_home(im->controller, action);
+            action_home(im->controller, ACTION_DOWN | ACTION_UP);
            return;
        }

@ -718,9 +667,7 @@ input_manager_process_mouse_button(struct input_manager *im,
            bool outside = x < r->x || x >= r->x + r->w
                        || y < r->y || y >= r->y + r->h;
            if (outside) {
-                if (down) {
-                    screen_resize_to_fit(im->screen);
-                }
+                screen_resize_to_fit(im->screen);
                return;
            }
        }
@ -789,7 +736,7 @@ convert_mouse_wheel(const SDL_MouseWheelEvent *from, struct screen *screen,
    return true;
 }

-static void
+void
 input_manager_process_mouse_wheel(struct input_manager *im,
                                  const SDL_MouseWheelEvent *event) {
    struct control_msg msg;
@ -799,46 +746,3 @@ input_manager_process_mouse_wheel(struct input_manager *im,
        }
    }
 }
-
-bool
-input_manager_handle_event(struct input_manager *im, SDL_Event *event) {
-    switch (event->type) {
-        case SDL_TEXTINPUT:
-            if (!im->control) {
-                return true;
-            }
-            input_manager_process_text_input(im, &event->text);
-            return true;
-        case SDL_KEYDOWN:
-        case SDL_KEYUP:
-            // some key events do not interact with the device, so process the
-            // event even if control is disabled
-            input_manager_process_key(im, &event->key);
-            return true;
-        case SDL_MOUSEMOTION:
-            if (!im->control) {
-                break;
-            }
-            input_manager_process_mouse_motion(im, &event->motion);
-            return true;
-        case SDL_MOUSEWHEEL:
-            if (!im->control) {
-                break;
-            }
-            input_manager_process_mouse_wheel(im, &event->wheel);
-            return true;
-        case SDL_MOUSEBUTTONDOWN:
-        case SDL_MOUSEBUTTONUP:
-            // some mouse events do not interact with the device, so process
-            // the event even if control is disabled
-            input_manager_process_mouse_button(im, &event->button);
-            return true;
-        case SDL_FINGERMOTION:
-        case SDL_FINGERDOWN:
-        case SDL_FINGERUP:
-            input_manager_process_touch(im, &event->tfinger);
-            return true;
-    }
-
-    return false;
-}
--- a/app/src/input_manager.h
+++ b/app/src/input_manager.h
@ -11,10 +11,11 @@
 #include "fps_counter.h"
 #include "scrcpy.h"
 #include "screen.h"
+#include "video_buffer.h"

 struct input_manager {
    struct controller *controller;
-    struct fps_counter *fps_counter;
+    struct video_buffer *video_buffer;
    struct screen *screen;

    // SDL reports repeated events as a boolean, but Android expects the actual
@ -33,20 +34,34 @@ struct input_manager {
    } sdl_shortcut_mods;

    bool vfinger_down;
-
-    // Tracks the number of identical consecutive shortcut key down events.
-    // Not to be confused with event->repeat, which counts the number of
-    // system-generated repeated key presses.
-    unsigned key_repeat;
-    SDL_Keycode last_keycode;
-    uint16_t last_mod;
 };

 void
 input_manager_init(struct input_manager *im,
                   const struct scrcpy_options *options);

-bool
-input_manager_handle_event(struct input_manager *im, SDL_Event *event);
+void
+input_manager_process_text_input(struct input_manager *im,
+                                 const SDL_TextInputEvent *event);
+
+void
+input_manager_process_key(struct input_manager *im,
+                          const SDL_KeyboardEvent *event);
+
+void
+input_manager_process_mouse_motion(struct input_manager *im,
+                                   const SDL_MouseMotionEvent *event);
+
+void
+input_manager_process_touch(struct input_manager *im,
+                            const SDL_TouchFingerEvent *event);
+
+void
+input_manager_process_mouse_button(struct input_manager *im,
+                                   const SDL_MouseButtonEvent *event);
+
+void
+input_manager_process_mouse_wheel(struct input_manager *im,
+                                  const SDL_MouseWheelEvent *event);

 #endif
--- a/app/src/main.c
+++ b/app/src/main.c
@ -6,9 +6,6 @@
 #include <stdbool.h>
 #include <unistd.h>
 #include <libavformat/avformat.h>
-#ifdef HAVE_V4L2
-# include <libavdevice/avdevice.h>
-#endif
 #define SDL_MAIN_HANDLED // avoid link error on Linux Windows Subsystem
 #include <SDL2/SDL.h>

@ -31,11 +28,6 @@ print_version(void) {
    fprintf(stderr, " - libavutil %d.%d.%d\n", LIBAVUTIL_VERSION_MAJOR,
                                               LIBAVUTIL_VERSION_MINOR,
                                               LIBAVUTIL_VERSION_MICRO);
-#ifdef HAVE_V4L2
-    fprintf(stderr, " - libavdevice %d.%d.%d\n", LIBAVDEVICE_VERSION_MAJOR,
-                                                 LIBAVDEVICE_VERSION_MINOR,
-                                                 LIBAVDEVICE_VERSION_MICRO);
-#endif
 }

 static SDL_LogPriority
@ -98,12 +90,6 @@ main(int argc, char *argv[]) {
    av_register_all();
 #endif

-#ifdef HAVE_V4L2
-    if (args.opts.v4l2_device) {
-        avdevice_register_all();
-    }
-#endif
-
    if (avformat_network_init()) {
        return 1;
    }
--- a/app/src/recorder.c
+++ b/app/src/recorder.c
@ -4,10 +4,6 @@
 #include <libavutil/time.h>

 #include "util/log.h"
-#include "util/str_util.h"
-
-/** Downcast packet_sink to recorder */
-#define DOWNCAST(SINK) container_of(SINK, struct recorder, packet_sink)

 static const AVRational SCRCPY_TIME_BASE = {1, 1000000}; // timestamps in us

@ -23,8 +19,8 @@ find_muxer(const char *name) {
 #else
        oformat = av_oformat_next(oformat);
 #endif
-        // until null or containing the requested name
-    } while (oformat && !strlist_contains(oformat->name, ',', name));
+        // until null or with name "mp4"
+    } while (oformat && strcmp(oformat->name, name));
    return oformat;
 }

@ -61,6 +57,50 @@ recorder_queue_clear(struct recorder_queue *queue) {
    }
 }

+bool
+recorder_init(struct recorder *recorder,
+              const char *filename,
+              enum sc_record_format format,
+              struct size declared_frame_size) {
+    recorder->filename = strdup(filename);
+    if (!recorder->filename) {
+        LOGE("Could not strdup filename");
+        return false;
+    }
+
+    bool ok = sc_mutex_init(&recorder->mutex);
+    if (!ok) {
+        LOGC("Could not create mutex");
+        free(recorder->filename);
+        return false;
+    }
+
+    ok = sc_cond_init(&recorder->queue_cond);
+    if (!ok) {
+        LOGC("Could not create cond");
+        sc_mutex_destroy(&recorder->mutex);
+        free(recorder->filename);
+        return false;
+    }
+
+    queue_init(&recorder->queue);
+    recorder->stopped = false;
+    recorder->failed = false;
+    recorder->format = format;
+    recorder->declared_frame_size = declared_frame_size;
+    recorder->header_written = false;
+    recorder->previous = NULL;
+
+    return true;
+}
+
+void
+recorder_destroy(struct recorder *recorder) {
+    sc_cond_destroy(&recorder->queue_cond);
+    sc_mutex_destroy(&recorder->mutex);
+    free(recorder->filename);
+}
+
 static const char *
 recorder_get_format_name(enum sc_record_format format) {
    switch (format) {
@ -70,6 +110,88 @@ recorder_get_format_name(enum sc_record_format format) {
    }
 }

+bool
+recorder_open(struct recorder *recorder, const AVCodec *input_codec) {
+    const char *format_name = recorder_get_format_name(recorder->format);
+    assert(format_name);
+    const AVOutputFormat *format = find_muxer(format_name);
+    if (!format) {
+        LOGE("Could not find muxer");
+        return false;
+    }
+
+    recorder->ctx = avformat_alloc_context();
+    if (!recorder->ctx) {
+        LOGE("Could not allocate output context");
+        return false;
+    }
+
+    // contrary to the deprecated API (av_oformat_next()), av_muxer_iterate()
+    // returns (on purpose) a pointer-to-const, but AVFormatContext.oformat
+    // still expects a pointer-to-non-const (it has not be updated accordingly)
+    // <https://github.com/FFmpeg/FFmpeg/commit/0694d8702421e7aff1340038559c438b61bb30dd>
+    recorder->ctx->oformat = (AVOutputFormat *) format;
+
+    av_dict_set(&recorder->ctx->metadata, "comment",
+                "Recorded by scrcpy " SCRCPY_VERSION, 0);
+
+    AVStream *ostream = avformat_new_stream(recorder->ctx, input_codec);
+    if (!ostream) {
+        avformat_free_context(recorder->ctx);
+        return false;
+    }
+
+#ifdef SCRCPY_LAVF_HAS_NEW_CODEC_PARAMS_API
+    ostream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
+    ostream->codecpar->codec_id = input_codec->id;
+    ostream->codecpar->format = AV_PIX_FMT_YUV420P;
+    ostream->codecpar->width = recorder->declared_frame_size.width;
+    ostream->codecpar->height = recorder->declared_frame_size.height;
+#else
+    ostream->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+    ostream->codec->codec_id = input_codec->id;
+    ostream->codec->pix_fmt = AV_PIX_FMT_YUV420P;
+    ostream->codec->width = recorder->declared_frame_size.width;
+    ostream->codec->height = recorder->declared_frame_size.height;
+#endif
+
+    int ret = avio_open(&recorder->ctx->pb, recorder->filename,
+                        AVIO_FLAG_WRITE);
+    if (ret < 0) {
+        LOGE("Failed to open output file: %s", recorder->filename);
+        // ostream will be cleaned up during context cleaning
+        avformat_free_context(recorder->ctx);
+        return false;
+    }
+
+    LOGI("Recording started to %s file: %s", format_name, recorder->filename);
+
+    return true;
+}
+
+void
+recorder_close(struct recorder *recorder) {
+    if (recorder->header_written) {
+        int ret = av_write_trailer(recorder->ctx);
+        if (ret < 0) {
+            LOGE("Failed to write trailer to %s", recorder->filename);
+            recorder->failed = true;
+        }
+    } else {
+        // the recorded file is empty
+        recorder->failed = true;
+    }
+    avio_close(recorder->ctx->pb);
+    avformat_free_context(recorder->ctx);
+
+    if (recorder->failed) {
+        LOGE("Recording failed to %s", recorder->filename);
+    } else {
+        const char *format_name = recorder_get_format_name(recorder->format);
+        LOGI("Recording complete to %s file: %s", format_name, recorder->filename);
+    }
+}
+
 static bool
 recorder_write_header(struct recorder *recorder, const AVPacket *packet) {
    AVStream *ostream = recorder->ctx->streams[0];
@ -83,8 +205,13 @@ recorder_write_header(struct recorder *recorder, const AVPacket *packet) {
    // copy the first packet to the extra data
    memcpy(extradata, packet->data, packet->size);

+#ifdef SCRCPY_LAVF_HAS_NEW_CODEC_PARAMS_API
    ostream->codecpar->extradata = extradata;
    ostream->codecpar->extradata_size = packet->size;
+#else
+    ostream->codec->extradata = extradata;
+    ostream->codec->extradata_size = packet->size;
+#endif

    int ret = avformat_write_header(recorder->ctx, NULL);
    if (ret < 0) {
@ -101,7 +228,7 @@ recorder_rescale_packet(struct recorder *recorder, AVPacket *packet) {
    av_packet_rescale_ts(packet, SCRCPY_TIME_BASE, ostream->time_base);
 }

-static bool
+bool
 recorder_write(struct recorder *recorder, AVPacket *packet) {
    if (!recorder->header_written) {
        if (packet->pts != AV_NOPTS_VALUE) {
@ -190,26 +317,7 @@ run_recorder(void *data) {
            sc_mutex_unlock(&recorder->mutex);
            break;
        }
-    }

-    if (!recorder->failed) {
-        if (recorder->header_written) {
-            int ret = av_write_trailer(recorder->ctx);
-            if (ret < 0) {
-                LOGE("Failed to write trailer to %s", recorder->filename);
-                recorder->failed = true;
-            }
-        } else {
-            // the recorded file is empty
-            recorder->failed = true;
-        }
-    }
-
-    if (recorder->failed) {
-        LOGE("Recording failed to %s", recorder->filename);
-    } else {
-        const char *format_name = recorder_get_format_name(recorder->format);
-        LOGI("Recording complete to %s file: %s", format_name, recorder->filename);
    }

    LOGD("Recorder thread ended");
@ -217,108 +325,34 @@ run_recorder(void *data) {
    return 0;
 }

-static bool
-recorder_open(struct recorder *recorder, const AVCodec *input_codec) {
-    bool ok = sc_mutex_init(&recorder->mutex);
-    if (!ok) {
-        LOGC("Could not create mutex");
-        return false;
-    }
-
-    ok = sc_cond_init(&recorder->queue_cond);
-    if (!ok) {
-        LOGC("Could not create cond");
-        goto error_mutex_destroy;
-    }
-
-    queue_init(&recorder->queue);
-    recorder->stopped = false;
-    recorder->failed = false;
-    recorder->header_written = false;
-    recorder->previous = NULL;
-
-    const char *format_name = recorder_get_format_name(recorder->format);
-    assert(format_name);
-    const AVOutputFormat *format = find_muxer(format_name);
-    if (!format) {
-        LOGE("Could not find muxer");
-        goto error_cond_destroy;
-    }
-
-    recorder->ctx = avformat_alloc_context();
-    if (!recorder->ctx) {
-        LOGE("Could not allocate output context");
-        goto error_cond_destroy;
-    }
-
-    // contrary to the deprecated API (av_oformat_next()), av_muxer_iterate()
-    // returns (on purpose) a pointer-to-const, but AVFormatContext.oformat
-    // still expects a pointer-to-non-const (it has not be updated accordingly)
-    // <https://github.com/FFmpeg/FFmpeg/commit/0694d8702421e7aff1340038559c438b61bb30dd>
-    recorder->ctx->oformat = (AVOutputFormat *) format;
-
-    av_dict_set(&recorder->ctx->metadata, "comment",
-                "Recorded by scrcpy " SCRCPY_VERSION, 0);
-
-    AVStream *ostream = avformat_new_stream(recorder->ctx, input_codec);
-    if (!ostream) {
-        goto error_avformat_free_context;
-    }
-
-    ostream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
-    ostream->codecpar->codec_id = input_codec->id;
-    ostream->codecpar->format = AV_PIX_FMT_YUV420P;
-    ostream->codecpar->width = recorder->declared_frame_size.width;
-    ostream->codecpar->height = recorder->declared_frame_size.height;
-
-    int ret = avio_open(&recorder->ctx->pb, recorder->filename,
-                        AVIO_FLAG_WRITE);
-    if (ret < 0) {
-        LOGE("Failed to open output file: %s", recorder->filename);
-        // ostream will be cleaned up during context cleaning
-        goto error_avformat_free_context;
-    }
-
+bool
+recorder_start(struct recorder *recorder) {
    LOGD("Starting recorder thread");
-    ok = sc_thread_create(&recorder->thread, run_recorder, "recorder",
+
+    bool ok = sc_thread_create(&recorder->thread, run_recorder, "recorder",
                               recorder);
    if (!ok) {
        LOGC("Could not start recorder thread");
-        goto error_avio_close;
+        return false;
    }

-    LOGI("Recording started to %s file: %s", format_name, recorder->filename);
-
    return true;
-
-error_avio_close:
-    avio_close(recorder->ctx->pb);
-error_avformat_free_context:
-    avformat_free_context(recorder->ctx);
-error_cond_destroy:
-    sc_cond_destroy(&recorder->queue_cond);
-error_mutex_destroy:
-    sc_mutex_destroy(&recorder->mutex);
-
-    return false;
 }

-static void
-recorder_close(struct recorder *recorder) {
+void
+recorder_stop(struct recorder *recorder) {
    sc_mutex_lock(&recorder->mutex);
    recorder->stopped = true;
    sc_cond_signal(&recorder->queue_cond);
    sc_mutex_unlock(&recorder->mutex);
-
-    sc_thread_join(&recorder->thread, NULL);
-
-    avio_close(recorder->ctx->pb);
-    avformat_free_context(recorder->ctx);
-    sc_cond_destroy(&recorder->queue_cond);
-    sc_mutex_destroy(&recorder->mutex);
 }

-static bool
+void
+recorder_join(struct recorder *recorder) {
+    sc_thread_join(&recorder->thread, NULL);
+}
+
+bool
 recorder_push(struct recorder *recorder, const AVPacket *packet) {
    sc_mutex_lock(&recorder->mutex);
    assert(!recorder->stopped);
@ -342,51 +376,3 @@ recorder_push(struct recorder *recorder, const AVPacket *packet) {
    sc_mutex_unlock(&recorder->mutex);
    return true;
 }
-
-static bool
-recorder_packet_sink_open(struct sc_packet_sink *sink, const AVCodec *codec) {
-    struct recorder *recorder = DOWNCAST(sink);
-    return recorder_open(recorder, codec);
-}
-
-static void
-recorder_packet_sink_close(struct sc_packet_sink *sink) {
-    struct recorder *recorder = DOWNCAST(sink);
-    recorder_close(recorder);
-}
-
-static bool
-recorder_packet_sink_push(struct sc_packet_sink *sink, const AVPacket *packet) {
-    struct recorder *recorder = DOWNCAST(sink);
-    return recorder_push(recorder, packet);
-}
-
-bool
-recorder_init(struct recorder *recorder,
-              const char *filename,
-              enum sc_record_format format,
-              struct size declared_frame_size) {
-    recorder->filename = strdup(filename);
-    if (!recorder->filename) {
-        LOGE("Could not strdup filename");
-        return false;
-    }
-
-    recorder->format = format;
-    recorder->declared_frame_size = declared_frame_size;
-
-    static const struct sc_packet_sink_ops ops = {
-        .open = recorder_packet_sink_open,
-        .close = recorder_packet_sink_close,
-        .push = recorder_packet_sink_push,
-    };
-
-    recorder->packet_sink.ops = &ops;
-
-    return true;
-}
-
-void
-recorder_destroy(struct recorder *recorder) {
-    free(recorder->filename);
-}
--- a/app/src/recorder.h
+++ b/app/src/recorder.h
@ -8,7 +8,6 @@

 #include "coords.h"
 #include "scrcpy.h"
-#include "trait/packet_sink.h"
 #include "util/queue.h"
 #include "util/thread.h"

@ -20,8 +19,6 @@ struct record_packet {
 struct recorder_queue QUEUE(struct record_packet);

 struct recorder {
-    struct sc_packet_sink packet_sink; // packet sink trait
-
    char *filename;
    enum sc_record_format format;
    AVFormatContext *ctx;
@ -31,7 +28,7 @@ struct recorder {
    sc_thread thread;
    sc_mutex mutex;
    sc_cond queue_cond;
-    bool stopped; // set on recorder_close()
+    bool stopped; // set on recorder_stop() by the stream reader
    bool failed; // set on packet write failure
    struct recorder_queue queue;

@ -49,4 +46,22 @@ recorder_init(struct recorder *recorder, const char *filename,
 void
 recorder_destroy(struct recorder *recorder);

+bool
+recorder_open(struct recorder *recorder, const AVCodec *input_codec);
+
+void
+recorder_close(struct recorder *recorder);
+
+bool
+recorder_start(struct recorder *recorder);
+
+void
+recorder_stop(struct recorder *recorder);
+
+void
+recorder_join(struct recorder *recorder);
+
+bool
+recorder_push(struct recorder *recorder, const AVPacket *packet);
+
 #endif
--- a/app/src/scrcpy.c
+++ b/app/src/scrcpy.c
@ -25,27 +25,23 @@
 #include "server.h"
 #include "stream.h"
 #include "tiny_xpm.h"
+#include "video_buffer.h"
 #include "util/log.h"
 #include "util/net.h"
-#ifdef HAVE_V4L2
-# include "v4l2_sink.h"
-#endif

 static struct server server;
-static struct screen screen;
+static struct screen screen = SCREEN_INITIALIZER;
 static struct fps_counter fps_counter;
+static struct video_buffer video_buffer;
 static struct stream stream;
 static struct decoder decoder;
 static struct recorder recorder;
-#ifdef HAVE_V4L2
-static struct sc_v4l2_sink v4l2_sink;
-#endif
 static struct controller controller;
 static struct file_handler file_handler;

 static struct input_manager input_manager = {
    .controller = &controller,
-    .fps_counter = &fps_counter,
+    .video_buffer = &video_buffer,
    .screen = &screen,
    .repeat = 0,

@ -132,6 +128,30 @@ sdl_init_and_configure(bool display, const char *render_driver,
    return true;
 }

+
+#if defined(__APPLE__) || defined(__WINDOWS__)
+# define CONTINUOUS_RESIZING_WORKAROUND
+#endif
+
+#ifdef CONTINUOUS_RESIZING_WORKAROUND
+// On Windows and MacOS, resizing blocks the event loop, so resizing events are
+// not triggered. As a workaround, handle them in an event handler.
+//
+// <https://bugzilla.libsdl.org/show_bug.cgi?id=2077>
+// <https://stackoverflow.com/a/40693139/1987178>
+static int
+event_watcher(void *data, SDL_Event *event) {
+    (void) data;
+    if (event->type == SDL_WINDOWEVENT
+            && event->window.event == SDL_WINDOWEVENT_RESIZED) {
+        // In practice, it seems to always be called from the same thread in
+        // that specific case. Anyway, it's just a workaround.
+        screen_render(&screen, true);
+    }
+    return 0;
+}
+#endif
+
 static bool
 is_apk(const char *file) {
    const char *ext = strrchr(file, '.');
@ -153,6 +173,56 @@ handle_event(SDL_Event *event, const struct scrcpy_options *options) {
        case SDL_QUIT:
            LOGD("User requested to quit");
            return EVENT_RESULT_STOPPED_BY_USER;
+        case EVENT_NEW_FRAME:
+            if (!screen.has_frame) {
+                screen.has_frame = true;
+                // this is the very first frame, show the window
+                screen_show_window(&screen);
+            }
+            if (!screen_update_frame(&screen, &video_buffer)) {
+                return EVENT_RESULT_CONTINUE;
+            }
+            break;
+        case SDL_WINDOWEVENT:
+            if (screen.has_frame) {
+                screen_handle_window_event(&screen, &event->window);
+            }
+            break;
+        case SDL_TEXTINPUT:
+            if (!options->control) {
+                break;
+            }
+            input_manager_process_text_input(&input_manager, &event->text);
+            break;
+        case SDL_KEYDOWN:
+        case SDL_KEYUP:
+            // some key events do not interact with the device, so process the
+            // event even if control is disabled
+            input_manager_process_key(&input_manager, &event->key);
+            break;
+        case SDL_MOUSEMOTION:
+            if (!options->control) {
+                break;
+            }
+            input_manager_process_mouse_motion(&input_manager, &event->motion);
+            break;
+        case SDL_MOUSEWHEEL:
+            if (!options->control) {
+                break;
+            }
+            input_manager_process_mouse_wheel(&input_manager, &event->wheel);
+            break;
+        case SDL_MOUSEBUTTONDOWN:
+        case SDL_MOUSEBUTTONUP:
+            // some mouse events do not interact with the device, so process
+            // the event even if control is disabled
+            input_manager_process_mouse_button(&input_manager, &event->button);
+            break;
+        case SDL_FINGERMOTION:
+        case SDL_FINGERDOWN:
+        case SDL_FINGERUP:
+            input_manager_process_touch(&input_manager, &event->tfinger);
+            break;
        case SDL_DROPFILE: {
            if (!options->control) {
                break;
@ -171,24 +241,19 @@ handle_event(SDL_Event *event, const struct scrcpy_options *options) {
                action = ACTION_PUSH_FILE;
            }
            file_handler_request(&file_handler, action, file);
-            goto end;
+            break;
        }
    }
-
-    bool consumed = screen_handle_event(&screen, event);
-    if (consumed) {
-        goto end;
-    }
-
-    consumed = input_manager_handle_event(&input_manager, event);
-    (void) consumed;
-
-end:
    return EVENT_RESULT_CONTINUE;
 }

 static bool
 event_loop(const struct scrcpy_options *options) {
+#ifdef CONTINUOUS_RESIZING_WORKAROUND
+    if (options->display) {
+        SDL_AddEventWatch(event_watcher, NULL);
+    }
+#endif
    SDL_Event event;
    while (SDL_WaitEvent(&event)) {
        enum event_result result = handle_event(&event, options);
@ -241,25 +306,36 @@ av_log_callback(void *avcl, int level, const char *fmt, va_list vl) {
    free(local_fmt);
 }

+static void
+decoder_on_new_frame(struct decoder *decoder, void *userdata) {
+    (void) decoder;
+    (void) userdata;
+
+    static SDL_Event new_frame_event = {
+        .type = EVENT_NEW_FRAME,
+    };
+    SDL_PushEvent(&new_frame_event);
+}
+
 bool
 scrcpy(const struct scrcpy_options *options) {
+    if (!server_init(&server)) {
+        return false;
+    }
+
    bool ret = false;

    bool server_started = false;
    bool fps_counter_initialized = false;
+    bool video_buffer_initialized = false;
    bool file_handler_initialized = false;
    bool recorder_initialized = false;
-#ifdef HAVE_V4L2
-    bool v4l2_sink_initialized = false;
-#endif
    bool stream_started = false;
    bool controller_initialized = false;
    bool controller_started = false;
-    bool screen_initialized = false;

    bool record = !!options->record_filename;
    struct server_params params = {
-        .serial = options->serial,
        .log_level = options->log_level,
        .crop = options->crop,
        .port_range = options->port_range,
@ -274,14 +350,8 @@ scrcpy(const struct scrcpy_options *options) {
        .codec_options = options->codec_options,
        .encoder_name = options->encoder_name,
        .force_adb_forward = options->force_adb_forward,
-        .power_off_on_close = options->power_off_on_close,
    };
-
-    if (!server_init(&server, &params)) {
-        return false;
-    }
-
-    if (!server_start(&server)) {
+    if (!server_start(&server, options->serial, &params)) {
        goto end;
    }

@ -306,28 +376,32 @@ scrcpy(const struct scrcpy_options *options) {
        goto end;
    }

+    struct decoder *dec = NULL;
    if (options->display) {
        if (!fps_counter_init(&fps_counter)) {
            goto end;
        }
        fps_counter_initialized = true;

+        if (!video_buffer_init(&video_buffer, &fps_counter,
+                               options->render_expired_frames)) {
+            goto end;
+        }
+        video_buffer_initialized = true;
+
        if (options->control) {
-            if (!file_handler_init(&file_handler, options->serial,
+            if (!file_handler_init(&file_handler, server.serial,
                                   options->push_target)) {
                goto end;
            }
            file_handler_initialized = true;
        }
-    }

-    struct decoder *dec = NULL;
-    bool needs_decoder = options->display;
-#ifdef HAVE_V4L2
-    needs_decoder |= !!options->v4l2_device;
-#endif
-    if (needs_decoder) {
-        decoder_init(&decoder);
+        static const struct decoder_callbacks decoder_cbs = {
+            .on_new_frame = decoder_on_new_frame,
+        };
+
+        decoder_init(&decoder, &video_buffer, &decoder_cbs, NULL);
        dec = &decoder;
    }

@ -345,15 +419,14 @@ scrcpy(const struct scrcpy_options *options) {

    av_log_set_callback(av_log_callback);

-    stream_init(&stream, server.video_socket);
+    stream_init(&stream, server.video_socket, dec, rec);

-    if (dec) {
-        stream_add_sink(&stream, &dec->packet_sink);
-    }
-
-    if (rec) {
-        stream_add_sink(&stream, &rec->packet_sink);
+    // now we consumed the header values, the socket receives the video stream
+    // start the stream
+    if (!stream_start(&stream)) {
+        goto end;
    }
+    stream_started = true;

    if (options->display) {
        if (options->control) {
@ -371,26 +444,14 @@ scrcpy(const struct scrcpy_options *options) {
        const char *window_title =
            options->window_title ? options->window_title : device_name;

-        struct screen_params screen_params = {
-            .window_title = window_title,
-            .frame_size = frame_size,
-            .always_on_top = options->always_on_top,
-            .window_x = options->window_x,
-            .window_y = options->window_y,
-            .window_width = options->window_width,
-            .window_height = options->window_height,
-            .window_borderless = options->window_borderless,
-            .rotation = options->rotation,
-            .mipmaps = options->mipmaps,
-            .fullscreen = options->fullscreen,
-        };
-
-        if (!screen_init(&screen, &fps_counter, &screen_params)) {
+        if (!screen_init_rendering(&screen, window_title, frame_size,
+                                   options->always_on_top, options->window_x,
+                                   options->window_y, options->window_width,
+                                   options->window_height,
+                                   options->window_borderless,
+                                   options->rotation, options->mipmaps)) {
            goto end;
        }
-        screen_initialized = true;
-
-        decoder_add_sink(&decoder, &screen.frame_sink);

        if (options->turn_screen_off) {
            struct control_msg msg;
@ -401,39 +462,25 @@ scrcpy(const struct scrcpy_options *options) {
                LOGW("Could not request 'set screen power mode'");
            }
        }
-    }

-#ifdef HAVE_V4L2
-    if (options->v4l2_device) {
-        if (!sc_v4l2_sink_init(&v4l2_sink, options->v4l2_device, frame_size)) {
-            goto end;
+        if (options->fullscreen) {
+            screen_switch_fullscreen(&screen);
        }
-
-        decoder_add_sink(&decoder, &v4l2_sink.frame_sink);
-
-        v4l2_sink_initialized = true;
    }
-#endif
-
-    // now we consumed the header values, the socket receives the video stream
-    // start the stream
-    if (!stream_start(&stream)) {
-        goto end;
-    }
-    stream_started = true;

    input_manager_init(&input_manager, options);

    ret = event_loop(options);
    LOGD("quit...");

-    // Close the window immediately on closing, because screen_destroy() may
-    // only be called once the stream thread is joined (it may take time)
-    screen_hide_window(&screen);
+    screen_destroy(&screen);

 end:
-    // The stream is not stopped explicitly, because it will stop by itself on
-    // end-of-stream
+    // stop stream and controller so that they don't continue once their socket
+    // is shutdown
+    if (stream_started) {
+        stream_stop(&stream);
+    }
    if (controller_started) {
        controller_stop(&controller);
    }
@ -454,19 +501,6 @@ end:
    if (stream_started) {
        stream_join(&stream);
    }
-
-#ifdef HAVE_V4L2
-    if (v4l2_sink_initialized) {
-        sc_v4l2_sink_destroy(&v4l2_sink);
-    }
-#endif
-
-    // Destroy the screen only after the stream is guaranteed to be finished,
-    // because otherwise the screen could receive new frames after destruction
-    if (screen_initialized) {
-        screen_destroy(&screen);
-    }
-
    if (controller_started) {
        controller_join(&controller);
    }
@ -483,6 +517,10 @@ end:
        file_handler_destroy(&file_handler);
    }

+    if (video_buffer_initialized) {
+        video_buffer_destroy(&video_buffer);
+    }
+
    if (fps_counter_initialized) {
        fps_counter_join(&fps_counter);
        fps_counter_destroy(&fps_counter);
--- a/app/src/scrcpy.h
+++ b/app/src/scrcpy.h
@ -20,16 +20,6 @@ enum sc_record_format {
    SC_RECORD_FORMAT_MKV,
 };

-enum sc_lock_video_orientation {
-    SC_LOCK_VIDEO_ORIENTATION_UNLOCKED = -1,
-    // lock the current orientation when scrcpy starts
-    SC_LOCK_VIDEO_ORIENTATION_INITIAL = -2,
-    SC_LOCK_VIDEO_ORIENTATION_0 = 0,
-    SC_LOCK_VIDEO_ORIENTATION_1,
-    SC_LOCK_VIDEO_ORIENTATION_2,
-    SC_LOCK_VIDEO_ORIENTATION_3,
-};
-
 #define SC_MAX_SHORTCUT_MODS 8

 enum sc_shortcut_mod {
@ -62,7 +52,6 @@ struct scrcpy_options {
    const char *render_driver;
    const char *codec_options;
    const char *encoder_name;
-    const char *v4l2_device;
    enum sc_log_level log_level;
    enum sc_record_format record_format;
    struct sc_port_range port_range;
@ -70,7 +59,7 @@ struct scrcpy_options {
    uint16_t max_size;
    uint32_t bit_rate;
    uint16_t max_fps;
-    enum sc_lock_video_orientation lock_video_orientation;
+    int8_t lock_video_orientation;
    uint8_t rotation;
    int16_t window_x; // SC_WINDOW_POSITION_UNDEFINED for "auto"
    int16_t window_y; // SC_WINDOW_POSITION_UNDEFINED for "auto"
@ -83,6 +72,7 @@ struct scrcpy_options {
    bool control;
    bool display;
    bool turn_screen_off;
+    bool render_expired_frames;
    bool prefer_text;
    bool window_borderless;
    bool mipmaps;
@ -92,7 +82,6 @@ struct scrcpy_options {
    bool forward_key_repeat;
    bool forward_all_clicks;
    bool legacy_paste;
-    bool power_off_on_close;
 };

 #define SCRCPY_OPTIONS_DEFAULT { \
@ -104,7 +93,6 @@ struct scrcpy_options {
    .render_driver = NULL, \
    .codec_options = NULL, \
    .encoder_name = NULL, \
-    .v4l2_device = NULL, \
    .log_level = SC_LOG_LEVEL_INFO, \
    .record_format = SC_RECORD_FORMAT_AUTO, \
    .port_range = { \
@ -115,10 +103,10 @@ struct scrcpy_options {
        .data = {SC_MOD_LALT, SC_MOD_LSUPER}, \
        .count = 2, \
    }, \
-    .max_size = 0, \
+    .max_size = DEFAULT_MAX_SIZE, \
    .bit_rate = DEFAULT_BIT_RATE, \
    .max_fps = 0, \
-    .lock_video_orientation = SC_LOCK_VIDEO_ORIENTATION_UNLOCKED, \
+    .lock_video_orientation = DEFAULT_LOCK_VIDEO_ORIENTATION, \
    .rotation = 0, \
    .window_x = SC_WINDOW_POSITION_UNDEFINED, \
    .window_y = SC_WINDOW_POSITION_UNDEFINED, \
@ -131,6 +119,7 @@ struct scrcpy_options {
    .control = true, \
    .display = true, \
    .turn_screen_off = false, \
+    .render_expired_frames = false, \
    .prefer_text = false, \
    .window_borderless = false, \
    .mipmaps = true, \
@ -140,7 +129,6 @@ struct scrcpy_options {
    .forward_key_repeat = true, \
    .forward_all_clicks = false, \
    .legacy_paste = false, \
-    .power_off_on_close = false, \
 }

 bool
--- a/app/src/screen.c
+++ b/app/src/screen.c
@ -4,7 +4,6 @@
 #include <string.h>
 #include <SDL2/SDL.h>

-#include "events.h"
 #include "icon.xpm"
 #include "scrcpy.h"
 #include "tiny_xpm.h"
@ -13,8 +12,6 @@

 #define DISPLAY_MARGINS 96

-#define DOWNCAST(SINK) container_of(SINK, struct screen, frame_sink)
-
 static inline struct size
 get_rotated_size(struct size size, int rotation) {
    struct size rotated_size;
@ -193,6 +190,11 @@ screen_update_content_rect(struct screen *screen) {
    }
 }

+void
+screen_init(struct screen *screen) {
+    *screen = (struct screen) SCREEN_INITIALIZER;
+}
+
 static inline SDL_Texture *
 create_texture(struct screen *screen) {
    SDL_Renderer *renderer = screen->renderer;
@ -220,110 +222,27 @@ create_texture(struct screen *screen) {
    return texture;
 }

-#if defined(__APPLE__) || defined(__WINDOWS__)
-# define CONTINUOUS_RESIZING_WORKAROUND
-#endif
-
-#ifdef CONTINUOUS_RESIZING_WORKAROUND
-// On Windows and MacOS, resizing blocks the event loop, so resizing events are
-// not triggered. As a workaround, handle them in an event handler.
-//
-// <https://bugzilla.libsdl.org/show_bug.cgi?id=2077>
-// <https://stackoverflow.com/a/40693139/1987178>
-static int
-event_watcher(void *data, SDL_Event *event) {
-    struct screen *screen = data;
-    if (event->type == SDL_WINDOWEVENT
-            && event->window.event == SDL_WINDOWEVENT_RESIZED) {
-        // In practice, it seems to always be called from the same thread in
-        // that specific case. Anyway, it's just a workaround.
-        screen_render(screen, true);
-    }
-    return 0;
-}
-#endif
-
-static bool
-screen_frame_sink_open(struct sc_frame_sink *sink) {
-    struct screen *screen = DOWNCAST(sink);
-    (void) screen;
-#ifndef NDEBUG
-    screen->open = true;
-#endif
-
-    // nothing to do, the screen is already open on the main thread
-    return true;
-}
-
-static void
-screen_frame_sink_close(struct sc_frame_sink *sink) {
-    struct screen *screen = DOWNCAST(sink);
-    (void) screen;
-#ifndef NDEBUG
-    screen->open = false;
-#endif
-
-    // nothing to do, the screen lifecycle is not managed by the frame producer
-}
-
-static bool
-screen_frame_sink_push(struct sc_frame_sink *sink, const AVFrame *frame) {
-    struct screen *screen = DOWNCAST(sink);
-
-    bool previous_frame_skipped;
-    bool ok = video_buffer_push(&screen->vb, frame, &previous_frame_skipped);
-    if (!ok) {
-        return false;
-    }
-
-    if (previous_frame_skipped) {
-        fps_counter_add_skipped_frame(screen->fps_counter);
-        // The EVENT_NEW_FRAME triggered for the previous frame will consume
-        // this new frame instead
-    } else {
-        static SDL_Event new_frame_event = {
-            .type = EVENT_NEW_FRAME,
-        };
-
-        // Post the event on the UI thread
-        SDL_PushEvent(&new_frame_event);
-    }
-
-    return true;
-}
-
 bool
-screen_init(struct screen *screen, struct fps_counter *fps_counter,
-            const struct screen_params *params) {
-    screen->fps_counter = fps_counter;
-
-    screen->resize_pending = false;
-    screen->has_frame = false;
-    screen->fullscreen = false;
-    screen->maximized = false;
-
-    bool ok = video_buffer_init(&screen->vb);
-    if (!ok) {
-        LOGE("Could not initialize video buffer");
-        return false;
+screen_init_rendering(struct screen *screen, const char *window_title,
+                      struct size frame_size, bool always_on_top,
+                      int16_t window_x, int16_t window_y, uint16_t window_width,
+                      uint16_t window_height, bool window_borderless,
+                      uint8_t rotation, bool mipmaps) {
+    screen->frame_size = frame_size;
+    screen->rotation = rotation;
+    if (rotation) {
+        LOGI("Initial display rotation set to %u", rotation);
    }
-
-    screen->frame_size = params->frame_size;
-    screen->rotation = params->rotation;
-    if (screen->rotation) {
-        LOGI("Initial display rotation set to %u", screen->rotation);
-    }
-    struct size content_size =
-        get_rotated_size(screen->frame_size, screen->rotation);
+    struct size content_size = get_rotated_size(frame_size, screen->rotation);
    screen->content_size = content_size;

-    struct size window_size = get_initial_optimal_size(content_size,
-                                                       params->window_width,
-                                                       params->window_height);
-    uint32_t window_flags = SDL_WINDOW_HIDDEN
-                          | SDL_WINDOW_RESIZABLE
-                          | SDL_WINDOW_ALLOW_HIGHDPI;
-    if (params->always_on_top) {
+    struct size window_size =
+        get_initial_optimal_size(content_size, window_width, window_height);
+    uint32_t window_flags = SDL_WINDOW_HIDDEN | SDL_WINDOW_RESIZABLE;
+#ifdef HIDPI_SUPPORT
+    window_flags |= SDL_WINDOW_ALLOW_HIGHDPI;
+#endif
+    if (always_on_top) {
 #ifdef SCRCPY_SDL_HAS_WINDOW_ALWAYS_ON_TOP
        window_flags |= SDL_WINDOW_ALWAYS_ON_TOP;
 #else
@ -331,15 +250,15 @@ screen_init(struct screen *screen, struct fps_counter *fps_counter,
             "(compile with SDL >= 2.0.5 to enable it)");
 #endif
    }
-    if (params->window_borderless) {
+    if (window_borderless) {
        window_flags |= SDL_WINDOW_BORDERLESS;
    }

-    int x = params->window_x != SC_WINDOW_POSITION_UNDEFINED
-          ? params->window_x : (int) SDL_WINDOWPOS_UNDEFINED;
-    int y = params->window_y != SC_WINDOW_POSITION_UNDEFINED
-          ? params->window_y : (int) SDL_WINDOWPOS_UNDEFINED;
-    screen->window = SDL_CreateWindow(params->window_title, x, y,
+    int x = window_x != SC_WINDOW_POSITION_UNDEFINED
+          ? window_x : (int) SDL_WINDOWPOS_UNDEFINED;
+    int y = window_y != SC_WINDOW_POSITION_UNDEFINED
+          ? window_y : (int) SDL_WINDOWPOS_UNDEFINED;
+    screen->window = SDL_CreateWindow(window_title, x, y,
                                      window_size.width, window_size.height,
                                      window_flags);
    if (!screen->window) {
@ -352,7 +271,6 @@ screen_init(struct screen *screen, struct fps_counter *fps_counter,
    if (!screen->renderer) {
        LOGC("Could not create renderer: %s", SDL_GetError());
        SDL_DestroyWindow(screen->window);
-        video_buffer_destroy(&screen->vb);
        return false;
    }

@ -361,8 +279,6 @@ screen_init(struct screen *screen, struct fps_counter *fps_counter,
    const char *renderer_name = r ? NULL : renderer_info.name;
    LOGI("Renderer: %s", renderer_name ? renderer_name : "(unknown)");

-    screen->mipmaps = false;
-
    // starts with "opengl"
    bool use_opengl = renderer_name && !strncmp(renderer_name, "opengl", 6);
    if (use_opengl) {
@ -371,7 +287,7 @@ screen_init(struct screen *screen, struct fps_counter *fps_counter,

        LOGI("OpenGL version: %s", gl->version);

-        if (params->mipmaps) {
+        if (mipmaps) {
            bool supports_mipmaps =
                sc_opengl_version_at_least(gl, 3, 0, /* OpenGL 3.0+ */
                                               2, 0  /* OpenGL ES 2.0+ */);
@ -385,7 +301,7 @@ screen_init(struct screen *screen, struct fps_counter *fps_counter,
        } else {
            LOGI("Trilinear filtering disabled");
        }
-    } else if (params->mipmaps) {
+    } else if (mipmaps) {
        LOGD("Trilinear filtering disabled (not an OpenGL renderer)");
    }

@ -397,24 +313,14 @@ screen_init(struct screen *screen, struct fps_counter *fps_counter,
        LOGW("Could not load icon");
    }

-    LOGI("Initial texture: %" PRIu16 "x%" PRIu16, params->frame_size.width,
-                                                  params->frame_size.height);
+    LOGI("Initial texture: %" PRIu16 "x%" PRIu16, frame_size.width,
+                                                  frame_size.height);
    screen->texture = create_texture(screen);
    if (!screen->texture) {
        LOGC("Could not create texture: %s", SDL_GetError());
        SDL_DestroyRenderer(screen->renderer);
        SDL_DestroyWindow(screen->window);
-        video_buffer_destroy(&screen->vb);
-        return false;
-    }
-
-    screen->frame = av_frame_alloc();
-    if (!screen->frame) {
-        LOGC("Could not create screen frame");
-        SDL_DestroyTexture(screen->texture);
-        SDL_DestroyRenderer(screen->renderer);
-        SDL_DestroyWindow(screen->window);
-        video_buffer_destroy(&screen->vb);
+        screen_destroy(screen);
        return false;
    }

@ -425,49 +331,21 @@ screen_init(struct screen *screen, struct fps_counter *fps_counter,

    screen_update_content_rect(screen);

-    if (params->fullscreen) {
-        screen_switch_fullscreen(screen);
-    }
-
-#ifdef CONTINUOUS_RESIZING_WORKAROUND
-    SDL_AddEventWatch(event_watcher, screen);
-#endif
-
-    static const struct sc_frame_sink_ops ops = {
-        .open = screen_frame_sink_open,
-        .close = screen_frame_sink_close,
-        .push = screen_frame_sink_push,
-    };
-
-    screen->frame_sink.ops = &ops;
-
-#ifndef NDEBUG
-    screen->open = false;
-#endif
-
    return true;
 }

-static void
+void
 screen_show_window(struct screen *screen) {
    SDL_ShowWindow(screen->window);
 }

-void
-screen_hide_window(struct screen *screen) {
-    SDL_HideWindow(screen->window);
-}
-
 void
 screen_destroy(struct screen *screen) {
-#ifndef NDEBUG
-    assert(!screen->open);
-#endif
-    av_frame_free(&screen->frame);
-    SDL_DestroyTexture(screen->texture);
+    if (screen->texture) {
+        SDL_DestroyTexture(screen->texture);
+    }
    SDL_DestroyRenderer(screen->renderer);
    SDL_DestroyWindow(screen->window);
-    video_buffer_destroy(&screen->vb);
 }

 static void
@ -570,14 +448,9 @@ update_texture(struct screen *screen, const AVFrame *frame) {
    }
 }

-static bool
-screen_update_frame(struct screen *screen) {
-    av_frame_unref(screen->frame);
-    video_buffer_consume(&screen->vb, screen->frame);
-    AVFrame *frame = screen->frame;
-
-    fps_counter_add_rendered_frame(screen->fps_counter);
-
+bool
+screen_update_frame(struct screen *screen, struct video_buffer *vb) {
+    const AVFrame *frame = video_buffer_take_rendering_frame(vb);
    struct size new_frame_size = {frame->width, frame->height};
    if (!prepare_for_frame(screen, new_frame_size)) {
        return false;
@ -669,52 +542,31 @@ screen_resize_to_pixel_perfect(struct screen *screen) {
                                            content_size.height);
 }

-bool
-screen_handle_event(struct screen *screen, SDL_Event *event) {
-    switch (event->type) {
-        case EVENT_NEW_FRAME:
-            if (!screen->has_frame) {
-                screen->has_frame = true;
-                // this is the very first frame, show the window
-                screen_show_window(screen);
+void
+screen_handle_window_event(struct screen *screen,
+                           const SDL_WindowEvent *event) {
+    switch (event->event) {
+        case SDL_WINDOWEVENT_EXPOSED:
+            screen_render(screen, true);
+            break;
+        case SDL_WINDOWEVENT_SIZE_CHANGED:
+            screen_render(screen, true);
+            break;
+        case SDL_WINDOWEVENT_MAXIMIZED:
+            screen->maximized = true;
+            break;
+        case SDL_WINDOWEVENT_RESTORED:
+            if (screen->fullscreen) {
+                // On Windows, in maximized+fullscreen, disabling fullscreen
+                // mode unexpectedly triggers the "restored" then "maximized"
+                // events, leaving the window in a weird state (maximized
+                // according to the events, but not maximized visually).
+                break;
            }
-            bool ok = screen_update_frame(screen);
-            if (!ok) {
-                LOGW("Frame update failed\n");
-            }
-            return true;
-        case SDL_WINDOWEVENT:
-            if (!screen->has_frame) {
-                // Do nothing
-                return true;
-            }
-            switch (event->window.event) {
-                case SDL_WINDOWEVENT_EXPOSED:
-                    screen_render(screen, true);
-                    break;
-                case SDL_WINDOWEVENT_SIZE_CHANGED:
-                    screen_render(screen, true);
-                    break;
-                case SDL_WINDOWEVENT_MAXIMIZED:
-                    screen->maximized = true;
-                    break;
-                case SDL_WINDOWEVENT_RESTORED:
-                    if (screen->fullscreen) {
-                        // On Windows, in maximized+fullscreen, disabling
-                        // fullscreen mode unexpectedly triggers the "restored"
-                        // then "maximized" events, leaving the window in a
-                        // weird state (maximized according to the events, but
-                        // not maximized visually).
-                        break;
-                    }
-                    screen->maximized = false;
-                    apply_pending_resize(screen);
-                    break;
-            }
-            return true;
+            screen->maximized = false;
+            apply_pending_resize(screen);
+            break;
    }
-
-    return false;
 }

 struct point
--- a/app/src/screen.h
+++ b/app/src/screen.h
@ -9,19 +9,10 @@

 #include "coords.h"
 #include "opengl.h"
-#include "trait/frame_sink.h"
-#include "video_buffer.h"
+
+struct video_buffer;

 struct screen {
-    struct sc_frame_sink frame_sink; // frame sink trait
-
-#ifndef NDEBUG
-    bool open; // track the open/close state to assert correct behavior
-#endif
-
-    struct video_buffer vb;
-    struct fps_counter *fps_counter;
-
    SDL_Window *window;
    SDL_Renderer *renderer;
    SDL_Texture *texture;
@ -41,44 +32,66 @@ struct screen {
    bool has_frame;
    bool fullscreen;
    bool maximized;
+    bool no_window;
    bool mipmaps;
-
-    AVFrame *frame;
 };

-struct screen_params {
-    const char *window_title;
-    struct size frame_size;
-    bool always_on_top;
+#define SCREEN_INITIALIZER { \
+    .window = NULL, \
+    .renderer = NULL, \
+    .texture = NULL, \
+    .gl = {0}, \
+    .frame_size = { \
+        .width = 0, \
+        .height = 0, \
+    }, \
+    .content_size = { \
+        .width = 0, \
+        .height = 0, \
+    }, \
+    .resize_pending = false, \
+    .windowed_content_size = { \
+        .width = 0, \
+        .height = 0, \
+    }, \
+    .rotation = 0, \
+    .rect = { \
+        .x = 0, \
+        .y = 0, \
+        .w = 0, \
+        .h = 0, \
+    }, \
+    .has_frame = false, \
+    .fullscreen = false, \
+    .maximized = false, \
+    .no_window = false, \
+    .mipmaps = false, \
+}

-    int16_t window_x;
-    int16_t window_y;
-    uint16_t window_width;  // accepts SC_WINDOW_POSITION_UNDEFINED
-    uint16_t window_height; // accepts SC_WINDOW_POSITION_UNDEFINED
-
-    bool window_borderless;
-
-    uint8_t rotation;
-    bool mipmaps;
-
-    bool fullscreen;
-};
+// initialize default values
+void
+screen_init(struct screen *screen);

 // initialize screen, create window, renderer and texture (window is hidden)
+// window_x and window_y accept SC_WINDOW_POSITION_UNDEFINED
 bool
-screen_init(struct screen *screen, struct fps_counter *fps_counter,
-            const struct screen_params *params);
+screen_init_rendering(struct screen *screen, const char *window_title,
+                      struct size frame_size, bool always_on_top,
+                      int16_t window_x, int16_t window_y, uint16_t window_width,
+                      uint16_t window_height, bool window_borderless,
+                      uint8_t rotation, bool mipmaps);
+
+// show the window
+void
+screen_show_window(struct screen *screen);

 // destroy window, renderer and texture (if any)
 void
 screen_destroy(struct screen *screen);

-// hide the window
-//
-// It is used to hide the window immediately on closing without waiting for
-// screen_destroy()
-void
-screen_hide_window(struct screen *screen);
+// resize if necessary and write the rendered frame into the texture
+bool
+screen_update_frame(struct screen *screen, struct video_buffer *vb);

 // render the texture to the renderer
 //
@ -103,9 +116,9 @@ screen_resize_to_pixel_perfect(struct screen *screen);
 void
 screen_set_rotation(struct screen *screen, unsigned rotation);

-// react to SDL events
-bool
-screen_handle_event(struct screen *screen, SDL_Event *event);
+// react to window events
+void
+screen_handle_window_event(struct screen *screen, const SDL_WindowEvent *event);

 // convert point from window coordinates to frame coordinates
 // x and y are expressed in pixels
--- a/app/src/server.c
+++ b/app/src/server.c
@ -58,7 +58,7 @@ get_server_path(void) {
        LOGE("Could not get executable path, "
             "using " SERVER_FILENAME " from current directory");
        // not found, use current directory
-        return strdup(SERVER_FILENAME);
+        return SERVER_FILENAME;
    }
    char *dir = dirname(executable_path);
    size_t dirlen = strlen(dir);
@ -70,7 +70,7 @@ get_server_path(void) {
        LOGE("Could not alloc server path string, "
             "using " SERVER_FILENAME " from current directory");
        free(executable_path);
-        return strdup(SERVER_FILENAME);
+        return SERVER_FILENAME;
    }

    memcpy(server_path, dir, dirlen);
@ -128,10 +128,9 @@ disable_tunnel_forward(const char *serial, uint16_t local_port) {
 static bool
 disable_tunnel(struct server *server) {
    if (server->tunnel_forward) {
-        return disable_tunnel_forward(server->params.serial,
-                                      server->local_port);
+        return disable_tunnel_forward(server->serial, server->local_port);
    }
-    return disable_tunnel_reverse(server->params.serial);
+    return disable_tunnel_reverse(server->serial);
 }

 static socket_t
@ -145,7 +144,7 @@ enable_tunnel_reverse_any_port(struct server *server,
                               struct sc_port_range port_range) {
    uint16_t port = port_range.first;
    for (;;) {
-        if (!enable_tunnel_reverse(server->params.serial, port)) {
+        if (!enable_tunnel_reverse(server->serial, port)) {
            // the command itself failed, it will fail on any port
            return false;
        }
@ -164,7 +163,7 @@ enable_tunnel_reverse_any_port(struct server *server,
        }

        // failure, disable tunnel and try another port
-        if (!disable_tunnel_reverse(server->params.serial)) {
+        if (!disable_tunnel_reverse(server->serial)) {
            LOGW("Could not remove reverse tunnel on port %" PRIu16, port);
        }

@ -192,7 +191,7 @@ enable_tunnel_forward_any_port(struct server *server,
    server->tunnel_forward = true;
    uint16_t port = port_range.first;
    for (;;) {
-        if (enable_tunnel_forward(server->params.serial, port)) {
+        if (enable_tunnel_forward(server->serial, port)) {
            // success
            server->local_port = port;
            return true;
@ -294,7 +293,6 @@ execute_server(struct server *server, const struct server_params *params) {
        params->stay_awake ? "true" : "false",
        params->codec_options ? params->codec_options : "-",
        params->encoder_name ? params->encoder_name : "-",
-        params->power_off_on_close ? "true" : "false",
    };
 #ifdef SERVER_DEBUGGER
    LOGI("Server debugger waiting for a client on device port "
@ -307,7 +305,7 @@ execute_server(struct server *server, const struct server_params *params) {
    //     Port: 5005
    // Then click on "Debug"
 #endif
-    return adb_execute(server->params.serial, cmd, ARRAY_LEN(cmd));
+    return adb_execute(server->serial, cmd, sizeof(cmd) / sizeof(cmd[0]));
 }

 static socket_t
@ -353,75 +351,21 @@ close_socket(socket_t socket) {
    }
 }

-static void
-server_params_destroy(struct server_params *params) {
-    // The server stores a copy of the params provided by the user
-    free((char *) params->crop);
-    free((char *) params->codec_options);
-    free((char *) params->encoder_name);
-}
-
-static bool
-server_params_copy(struct server_params *dst, const struct server_params *src) {
-    // params reference user-allocated memory, so we must copy them to handle
-    // them from a separate thread
-
-    *dst = *src;
-
-    dst->crop = NULL;
-    dst->codec_options = NULL;
-    dst->encoder_name = NULL;
-
-    if (src->crop) {
-        dst->crop = strdup(src->crop);
-        if (!dst->crop) {
-            goto error;
-        }
-    }
-
-    if (src->codec_options) {
-        dst->codec_options = strdup(src->codec_options);
-        if (!dst->codec_options) {
-            goto error;
-        }
-    }
-
-    if (src->encoder_name) {
-        dst->encoder_name = strdup(src->encoder_name);
-        if (!dst->encoder_name) {
-            goto error;
-        }
-    }
-
-    return true;
-
-error:
-    server_params_destroy(dst);
-    return false;
-};
-
-
 bool
-server_init(struct server *server, const struct server_params *params) {
-    if (!server_params_copy(&server->params, params)) {
-        LOGE("Could not copy server params");
-        return false;
-    }
-
+server_init(struct server *server) {
+    server->serial = NULL;
    server->process = PROCESS_NONE;
    atomic_flag_clear_explicit(&server->server_socket_closed,
                               memory_order_relaxed);

    bool ok = sc_mutex_init(&server->mutex);
    if (!ok) {
-        server_params_destroy(&server->params);
        return false;
    }

    ok = sc_cond_init(&server->process_terminated_cond);
    if (!ok) {
        sc_mutex_destroy(&server->mutex);
-        server_params_destroy(&server->params);
        return false;
    }

@ -461,41 +405,31 @@ run_wait_server(void *data) {
    return 0;
 }

-static int
-run_server(void *data) {
-    struct server *server = data;
+bool
+server_start(struct server *server, const char *serial,
+             const struct server_params *params) {
+    if (serial) {
+        server->serial = strdup(serial);
+        if (!server->serial) {
+            return false;
+        }
+    }

-    const struct server_params *params = &server->params;
-    const struct server_callbacks *cbs = &server->cbs;
-    void *userdata = server->userdata;
-
-    if (!push_server(params->serial)) {
-        cbs->on_connection_failed(server);
-        goto end;
+    if (!push_server(serial)) {
+        goto error1;
    }

    if (!enable_tunnel_any_port(server, params->port_range,
                                params->force_adb_forward)) {
-        cbs->on_connection_failed(server);
-        goto end;
+        goto error1;
    }

    // server will connect to our server socket
    server->process = execute_server(server, params);
    if (server->process == PROCESS_NONE) {
-        cbs->on_connection_failed(server);
-        goto end;
+        goto error2;
    }

-    process_wait(server->process, false); // ignore exit code
-
-end:
-    return 0;
-}
-
-bool
-server_start(struct server *server) {
-
    // If the server process dies before connecting to the server socket, then
    // the client will be stuck forever on accept(). To avoid the problem, we
    // must be able to wake up the accept() call when the server dies. To keep
@ -507,14 +441,14 @@ server_start(struct server *server) {
    if (!ok) {
        process_terminate(server->process);
        process_wait(server->process, true); // ignore exit code
-        goto error;
+        goto error2;
    }

    server->tunnel_enabled = true;

    return true;

-error:
+error2:
    if (!server->tunnel_forward) {
        bool was_closed =
            atomic_flag_test_and_set(&server->server_socket_closed);
@ -524,7 +458,8 @@ error:
        close_socket(server->server_socket);
    }
    disable_tunnel(server);
-
+error1:
+    free(server->serial);
    return false;
 }

@ -622,5 +557,4 @@ server_destroy(struct server *server) {
    free(server->serial);
    sc_cond_destroy(&server->process_terminated_cond);
    sc_mutex_destroy(&server->mutex);
-    server_params_destroy(&server->params);
 }
--- a/app/src/server.h
+++ b/app/src/server.h
@ -13,25 +13,6 @@
 #include "util/net.h"
 #include "util/thread.h"

-struct server_params {
-    enum sc_log_level log_level;
-    const char *serial;
-    const char *crop;
-    const char *codec_options;
-    const char *encoder_name;
-    struct sc_port_range port_range;
-    uint16_t max_size;
-    uint32_t bit_rate;
-    uint16_t max_fps;
-    int8_t lock_video_orientation;
-    bool control;
-    uint32_t display_id;
-    bool show_touches;
-    bool stay_awake;
-    bool force_adb_forward;
-    bool power_off_on_close;
-};
-
 struct server {
    char *serial;
    process_t process;
@ -48,29 +29,33 @@ struct server {
    uint16_t local_port; // selected from port_range
    bool tunnel_enabled;
    bool tunnel_forward; // use "adb forward" instead of "adb reverse"
-
-    // The internal allocated strings are copies owned by the server
-    struct server_params params;
-
-    const struct server_callbacks *cbs;
-    void *userdata;
 };

-struct server_callbacks {
-    void (*on_connection_failed)(struct server *server);
-    void (*on_connected)(struct server *server, const char *name,
-                         struct size size, void *userdata);
-    void (*on_disconnected)(struct server *server, void *userdata);
+struct server_params {
+    enum sc_log_level log_level;
+    const char *crop;
+    const char *codec_options;
+    const char *encoder_name;
+    struct sc_port_range port_range;
+    uint16_t max_size;
+    uint32_t bit_rate;
+    uint16_t max_fps;
+    int8_t lock_video_orientation;
+    bool control;
+    uint32_t display_id;
+    bool show_touches;
+    bool stay_awake;
+    bool force_adb_forward;
 };

-// init server fields
+// init default values
 bool
-server_init(struct server *server, const struct server_params *params);
+server_init(struct server *server);

 // push, enable tunnel et start the server
 bool
-server_start(struct server *server, const struct server_callbacks *cbs,
-             void *userdata);
+server_start(struct server *server, const char *serial,
+             const struct server_params *params);

 // block until the communication with the server is established
 bool
--- a/app/src/stream.c
+++ b/app/src/stream.c
@ -66,11 +66,25 @@ notify_stopped(void) {
 }

 static bool
-push_packet_to_sinks(struct stream *stream, const AVPacket *packet) {
-    for (unsigned i = 0; i < stream->sink_count; ++i) {
-        struct sc_packet_sink *sink = stream->sinks[i];
-        if (!sink->ops->push(sink, packet)) {
-            LOGE("Could not send config packet to sink %d", i);
+process_config_packet(struct stream *stream, AVPacket *packet) {
+    if (stream->recorder && !recorder_push(stream->recorder, packet)) {
+        LOGE("Could not send config packet to recorder");
+        return false;
+    }
+    return true;
+}
+
+static bool
+process_frame(struct stream *stream, AVPacket *packet) {
+    if (stream->decoder && !decoder_push(stream->decoder, packet)) {
+        return false;
+    }
+
+    if (stream->recorder) {
+        packet->dts = packet->pts;
+
+        if (!recorder_push(stream->recorder, packet)) {
+            LOGE("Could not send packet to recorder");
            return false;
        }
    }
@ -97,11 +111,9 @@ stream_parse(struct stream *stream, AVPacket *packet) {
        packet->flags |= AV_PKT_FLAG_KEY;
    }

-    packet->dts = packet->pts;
-
-    bool ok = push_packet_to_sinks(stream, packet);
+    bool ok = process_frame(stream, packet);
    if (!ok) {
-        LOGE("Could not process packet");
+        LOGE("Could not process frame");
        return false;
    }

@ -144,7 +156,7 @@ stream_push_packet(struct stream *stream, AVPacket *packet) {

    if (is_config) {
        // config packet
-        bool ok = push_packet_to_sinks(stream, packet);
+        bool ok = process_config_packet(stream, packet);
        if (!ok) {
            return false;
        }
@ -165,33 +177,6 @@ stream_push_packet(struct stream *stream, AVPacket *packet) {
    return true;
 }

-static void
-stream_close_first_sinks(struct stream *stream, unsigned count) {
-    while (count) {
-        struct sc_packet_sink *sink = stream->sinks[--count];
-        sink->ops->close(sink);
-    }
-}
-
-static inline void
-stream_close_sinks(struct stream *stream) {
-    stream_close_first_sinks(stream, stream->sink_count);
-}
-
-static bool
-stream_open_sinks(struct stream *stream, const AVCodec *codec) {
-    for (unsigned i = 0; i < stream->sink_count; ++i) {
-        struct sc_packet_sink *sink = stream->sinks[i];
-        if (!sink->ops->open(sink, codec)) {
-            LOGE("Could not open packet sink %d", i);
-            stream_close_first_sinks(stream, i);
-            return false;
-        }
-    }
-
-    return true;
-}
-
 static int
 run_stream(void *data) {
    struct stream *stream = data;
@ -208,15 +193,27 @@ run_stream(void *data) {
        goto end;
    }

-    if (!stream_open_sinks(stream, codec)) {
-        LOGE("Could not open stream sinks");
+    if (stream->decoder && !decoder_open(stream->decoder, codec)) {
+        LOGE("Could not open decoder");
        goto finally_free_codec_ctx;
    }

+    if (stream->recorder) {
+        if (!recorder_open(stream->recorder, codec)) {
+            LOGE("Could not open recorder");
+            goto finally_close_decoder;
+        }
+
+        if (!recorder_start(stream->recorder)) {
+            LOGE("Could not start recorder");
+            goto finally_close_recorder;
+        }
+    }
+
    stream->parser = av_parser_init(AV_CODEC_ID_H264);
    if (!stream->parser) {
        LOGE("Could not initialize parser");
-        goto finally_close_sinks;
+        goto finally_stop_and_join_recorder;
    }

    // We must only pass complete frames to av_parser_parse2()!
@ -246,8 +243,20 @@ run_stream(void *data) {
    }

    av_parser_close(stream->parser);
-finally_close_sinks:
-    stream_close_sinks(stream);
+finally_stop_and_join_recorder:
+    if (stream->recorder) {
+        recorder_stop(stream->recorder);
+        LOGI("Finishing recording...");
+        recorder_join(stream->recorder);
+    }
+finally_close_recorder:
+    if (stream->recorder) {
+        recorder_close(stream->recorder);
+    }
+finally_close_decoder:
+    if (stream->decoder) {
+        decoder_close(stream->decoder);
+    }
 finally_free_codec_ctx:
    avcodec_free_context(&stream->codec_ctx);
 end:
@ -256,18 +265,12 @@ end:
 }

 void
-stream_init(struct stream *stream, socket_t socket) {
+stream_init(struct stream *stream, socket_t socket,
+            struct decoder *decoder, struct recorder *recorder) {
    stream->socket = socket;
+    stream->decoder = decoder,
+    stream->recorder = recorder;
    stream->has_pending = false;
-    stream->sink_count = 0;
-}
-
-void
-stream_add_sink(struct stream *stream, struct sc_packet_sink *sink) {
-    assert(stream->sink_count < STREAM_MAX_SINKS);
-    assert(sink);
-    assert(sink->ops);
-    stream->sinks[stream->sink_count++] = sink;
 }

 bool
@ -282,6 +285,13 @@ stream_start(struct stream *stream) {
    return true;
 }

+void
+stream_stop(struct stream *stream) {
+    if (stream->decoder) {
+        decoder_interrupt(stream->decoder);
+    }
+}
+
 void
 stream_join(struct stream *stream) {
    sc_thread_join(&stream->thread, NULL);
--- a/app/src/stream.h
+++ b/app/src/stream.h
@ -8,19 +8,16 @@
 #include <libavformat/avformat.h>
 #include <SDL2/SDL_atomic.h>

-#include "trait/packet_sink.h"
 #include "util/net.h"
 #include "util/thread.h"

-#define STREAM_MAX_SINKS 2
+struct video_buffer;

 struct stream {
    socket_t socket;
    sc_thread thread;
-
-    struct sc_packet_sink *sinks[STREAM_MAX_SINKS];
-    unsigned sink_count;
-
+    struct decoder *decoder;
+    struct recorder *recorder;
    AVCodecContext *codec_ctx;
    AVCodecParserContext *parser;
    // successive packets may need to be concatenated, until a non-config
@ -30,14 +27,15 @@ struct stream {
 };

 void
-stream_init(struct stream *stream, socket_t socket);
-
-void
-stream_add_sink(struct stream *stream, struct sc_packet_sink *sink);
+stream_init(struct stream *stream, socket_t socket,
+            struct decoder *decoder, struct recorder *recorder);

 bool
 stream_start(struct stream *stream);

+void
+stream_stop(struct stream *stream);
+
 void
 stream_join(struct stream *stream);

--- a/app/src/trait/frame_sink.h
+++ b/app/src/trait/frame_sink.h
@ -1,26 +0,0 @@
-#ifndef SC_FRAME_SINK
-#define SC_FRAME_SINK
-
-#include "common.h"
-
-#include <assert.h>
-#include <stdbool.h>
-
-typedef struct AVFrame AVFrame;
-
-/**
- * Frame sink trait.
- *
- * Component able to receive AVFrames should implement this trait.
- */
-struct sc_frame_sink {
-    const struct sc_frame_sink_ops *ops;
-};
-
-struct sc_frame_sink_ops {
-    bool (*open)(struct sc_frame_sink *sink);
-    void (*close)(struct sc_frame_sink *sink);
-    bool (*push)(struct sc_frame_sink *sink, const AVFrame *frame);
-};
-
-#endif
--- a/app/src/trait/packet_sink.h
+++ b/app/src/trait/packet_sink.h
@ -1,27 +0,0 @@
-#ifndef SC_PACKET_SINK
-#define SC_PACKET_SINK
-
-#include "common.h"
-
-#include <assert.h>
-#include <stdbool.h>
-
-typedef struct AVCodec AVCodec;
-typedef struct AVPacket AVPacket;
-
-/**
- * Packet sink trait.
- *
- * Component able to receive AVPackets should implement this trait.
- */
-struct sc_packet_sink {
-    const struct sc_packet_sink_ops *ops;
-};
-
-struct sc_packet_sink_ops {
-    bool (*open)(struct sc_packet_sink *sink, const AVCodec *codec);
-    void (*close)(struct sc_packet_sink *sink);
-    bool (*push)(struct sc_packet_sink *sink, const AVPacket *packet);
-};
-
-#endif
--- a/app/src/util/str_util.c
+++ b/app/src/util/str_util.c
@ -140,24 +140,6 @@ parse_integer_with_suffix(const char *s, long *out) {
    return true;
 }

-bool
-strlist_contains(const char *list, char sep, const char *s) {
-    char *p;
-    do {
-        p = strchr(list, sep);
-
-        size_t token_len = p ? (size_t) (p - list) : strlen(list);
-        if (!strncmp(list, s, token_len)) {
-            return true;
-        }
-
-        if (p) {
-            list = p + 1;
-        }
-    } while (p);
-    return false;
-}
-
 size_t
 utf8_truncation_index(const char *utf8, size_t max_len) {
    size_t len = strlen(utf8);
--- a/app/src/util/str_util.h
+++ b/app/src/util/str_util.h
@ -43,11 +43,6 @@ parse_integers(const char *s, const char sep, size_t max_items, long *out);
 bool
 parse_integer_with_suffix(const char *s, long *out);

-// search s in the list separated by sep
-// for example, strlist_contains("a,bc,def", ',', "bc") returns true
-bool
-strlist_contains(const char *list, char sep, const char *s);
-
 // return the index to truncate a UTF-8 string at a valid position
 size_t
 utf8_truncation_index(const char *utf8, size_t max_len);
--- a/app/src/v4l2_sink.c
+++ b/app/src/v4l2_sink.c
@ -1,342 +0,0 @@
-#include "v4l2_sink.h"
-
-#include "util/log.h"
-#include "util/str_util.h"
-
-/** Downcast frame_sink to sc_v4l2_sink */
-#define DOWNCAST(SINK) container_of(SINK, struct sc_v4l2_sink, frame_sink)
-
-static const AVRational SCRCPY_TIME_BASE = {1, 1000000}; // timestamps in us
-
-static const AVOutputFormat *
-find_muxer(const char *name) {
-#ifdef SCRCPY_LAVF_HAS_NEW_MUXER_ITERATOR_API
-    void *opaque = NULL;
-#endif
-    const AVOutputFormat *oformat = NULL;
-    do {
-#ifdef SCRCPY_LAVF_HAS_NEW_MUXER_ITERATOR_API
-        oformat = av_muxer_iterate(&opaque);
-#else
-        oformat = av_oformat_next(oformat);
-#endif
-        // until null or containing the requested name
-    } while (oformat && !strlist_contains(oformat->name, ',', name));
-    return oformat;
-}
-
-static bool
-write_header(struct sc_v4l2_sink *vs, const AVPacket *packet) {
-    AVStream *ostream = vs->format_ctx->streams[0];
-
-    uint8_t *extradata = av_malloc(packet->size * sizeof(uint8_t));
-    if (!extradata) {
-        LOGC("Could not allocate extradata");
-        return false;
-    }
-
-    // copy the first packet to the extra data
-    memcpy(extradata, packet->data, packet->size);
-
-    ostream->codecpar->extradata = extradata;
-    ostream->codecpar->extradata_size = packet->size;
-
-    int ret = avformat_write_header(vs->format_ctx, NULL);
-    if (ret < 0) {
-        LOGE("Failed to write header to %s", vs->device_name);
-        return false;
-    }
-
-    return true;
-}
-
-static void
-rescale_packet(struct sc_v4l2_sink *vs, AVPacket *packet) {
-    AVStream *ostream = vs->format_ctx->streams[0];
-    av_packet_rescale_ts(packet, SCRCPY_TIME_BASE, ostream->time_base);
-}
-
-static bool
-write_packet(struct sc_v4l2_sink *vs, AVPacket *packet) {
-    if (!vs->header_written) {
-        bool ok = write_header(vs, packet);
-        if (!ok) {
-            return false;
-        }
-        vs->header_written = true;
-        return true;
-    }
-
-    rescale_packet(vs, packet);
-
-    bool ok = av_write_frame(vs->format_ctx, packet) >= 0;
-
-    // Failing to write the last frame is not very serious, no future frame may
-    // depend on it, so the resulting file will still be valid
-    (void) ok;
-
-    return true;
-}
-
-static bool
-encode_and_write_frame(struct sc_v4l2_sink *vs, const AVFrame *frame) {
-    int ret = avcodec_send_frame(vs->encoder_ctx, frame);
-    if (ret < 0 && ret != AVERROR(EAGAIN)) {
-        LOGE("Could not send v4l2 video frame: %d", ret);
-        return false;
-    }
-
-    AVPacket *packet = &vs->packet;
-    ret = avcodec_receive_packet(vs->encoder_ctx, packet);
-    if (ret == 0) {
-        // A packet was received
-
-        bool ok = write_packet(vs, packet);
-        av_packet_unref(packet);
-        if (!ok) {
-            LOGW("Could not send packet to v4l2 sink");
-            return false;
-        }
-    } else if (ret != AVERROR(EAGAIN)) {
-        LOGE("Could not receive v4l2 video packet: %d", ret);
-        return false;
-    }
-
-    return true;
-}
-
-static int
-run_v4l2_sink(void *data) {
-    struct sc_v4l2_sink *vs = data;
-
-    for (;;) {
-        sc_mutex_lock(&vs->mutex);
-
-        while (!vs->stopped && vs->vb.pending_frame_consumed) {
-            sc_cond_wait(&vs->cond, &vs->mutex);
-        }
-
-        if (vs->stopped) {
-            sc_mutex_unlock(&vs->mutex);
-            break;
-        }
-
-        sc_mutex_unlock(&vs->mutex);
-
-        video_buffer_consume(&vs->vb, vs->frame);
-        bool ok = encode_and_write_frame(vs, vs->frame);
-        av_frame_unref(vs->frame);
-        if (!ok) {
-            LOGE("Could not send frame to v4l2 sink");
-            break;
-        }
-    }
-
-    LOGD("V4l2 thread ended");
-
-    return 0;
-}
-
-static bool
-sc_v4l2_sink_open(struct sc_v4l2_sink *vs) {
-    bool ok = video_buffer_init(&vs->vb);
-    if (!ok) {
-        return false;
-    }
-
-    ok = sc_mutex_init(&vs->mutex);
-    if (!ok) {
-        LOGC("Could not create mutex");
-        goto error_video_buffer_destroy;
-    }
-
-    ok = sc_cond_init(&vs->cond);
-    if (!ok) {
-        LOGC("Could not create cond");
-        goto error_mutex_destroy;
-    }
-
-    // FIXME
-    const AVOutputFormat *format = find_muxer("video4linux2,v4l2");
-    if (!format) {
-        LOGE("Could not find v4l2 muxer");
-        goto error_cond_destroy;
-    }
-
-    const AVCodec *encoder = avcodec_find_encoder(AV_CODEC_ID_RAWVIDEO);
-    if (!encoder) {
-        LOGE("Raw video encoder not found");
-        return false;
-    }
-
-    vs->format_ctx = avformat_alloc_context();
-    if (!vs->format_ctx) {
-        LOGE("Could not allocate v4l2 output context");
-        return false;
-    }
-
-    // contrary to the deprecated API (av_oformat_next()), av_muxer_iterate()
-    // returns (on purpose) a pointer-to-const, but AVFormatContext.oformat
-    // still expects a pointer-to-non-const (it has not be updated accordingly)
-    // <https://github.com/FFmpeg/FFmpeg/commit/0694d8702421e7aff1340038559c438b61bb30dd>
-    vs->format_ctx->oformat = (AVOutputFormat *) format;
-    vs->format_ctx->url = strdup(vs->device_name);
-    if (!vs->format_ctx->url) {
-        LOGE("Could not strdup v4l2 device name");
-        goto error_avformat_free_context;
-        return false;
-    }
-
-    AVStream *ostream = avformat_new_stream(vs->format_ctx, encoder);
-    if (!ostream) {
-        LOGE("Could not allocate new v4l2 stream");
-        goto error_avformat_free_context;
-        return false;
-    }
-
-    ostream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
-    ostream->codecpar->codec_id = encoder->id;
-    ostream->codecpar->format = AV_PIX_FMT_YUV420P;
-    ostream->codecpar->width = vs->frame_size.width;
-    ostream->codecpar->height = vs->frame_size.height;
-
-    int ret = avio_open(&vs->format_ctx->pb, vs->device_name, AVIO_FLAG_WRITE);
-    if (ret < 0) {
-        LOGE("Failed to open output device: %s", vs->device_name);
-        // ostream will be cleaned up during context cleaning
-        goto error_avformat_free_context;
-    }
-
-    vs->encoder_ctx = avcodec_alloc_context3(encoder);
-    if (!vs->encoder_ctx) {
-        LOGC("Could not allocate codec context for v4l2");
-        goto error_avio_close;
-    }
-
-    vs->encoder_ctx->width = vs->frame_size.width;
-    vs->encoder_ctx->height = vs->frame_size.height;
-    vs->encoder_ctx->pix_fmt = AV_PIX_FMT_YUV420P;
-    vs->encoder_ctx->time_base.num = 1;
-    vs->encoder_ctx->time_base.den = 1;
-
-    if (avcodec_open2(vs->encoder_ctx, encoder, NULL) < 0) {
-        LOGE("Could not open codec for v4l2");
-        goto error_avcodec_free_context;
-    }
-
-    vs->frame = av_frame_alloc();
-    if (!vs->frame) {
-        LOGE("Could not create v4l2 frame");
-        goto error_avcodec_close;
-    }
-
-    LOGD("Starting v4l2 thread");
-    ok = sc_thread_create(&vs->thread, run_v4l2_sink, "v4l2", vs);
-    if (!ok) {
-        LOGC("Could not start v4l2 thread");
-        goto error_av_frame_free;
-    }
-
-    vs->header_written = false;
-    vs->stopped = false;
-
-    LOGI("v4l2 sink started to device: %s", vs->device_name);
-
-    return true;
-
-error_av_frame_free:
-    av_frame_free(&vs->frame);
-error_avcodec_close:
-    avcodec_close(vs->encoder_ctx);
-error_avcodec_free_context:
-    avcodec_free_context(&vs->encoder_ctx);
-error_avio_close:
-    avio_close(vs->format_ctx->pb);
-error_avformat_free_context:
-    avformat_free_context(vs->format_ctx);
-error_cond_destroy:
-    sc_cond_destroy(&vs->cond);
-error_mutex_destroy:
-    sc_mutex_destroy(&vs->mutex);
-error_video_buffer_destroy:
-    video_buffer_destroy(&vs->vb);
-
-    return false;
-}
-
-static void
-sc_v4l2_sink_close(struct sc_v4l2_sink *vs) {
-    sc_mutex_lock(&vs->mutex);
-    vs->stopped = true;
-    sc_cond_signal(&vs->cond);
-    sc_mutex_unlock(&vs->mutex);
-
-    sc_thread_join(&vs->thread, NULL);
-
-    av_frame_free(&vs->frame);
-    avcodec_close(vs->encoder_ctx);
-    avcodec_free_context(&vs->encoder_ctx);
-    avio_close(vs->format_ctx->pb);
-    avformat_free_context(vs->format_ctx);
-    sc_cond_destroy(&vs->cond);
-    sc_mutex_destroy(&vs->mutex);
-    video_buffer_destroy(&vs->vb);
-}
-
-static bool
-sc_v4l2_sink_push(struct sc_v4l2_sink *vs, const AVFrame *frame) {
-    bool ok = video_buffer_push(&vs->vb, frame, NULL);
-    if (!ok) {
-        return false;
-    }
-
-    // signal possible change of vs->vb.pending_frame_consumed
-    sc_cond_signal(&vs->cond);
-
-    return true;
-}
-
-static bool
-sc_v4l2_frame_sink_open(struct sc_frame_sink *sink) {
-    struct sc_v4l2_sink *vs = DOWNCAST(sink);
-    return sc_v4l2_sink_open(vs);
-}
-
-static void
-sc_v4l2_frame_sink_close(struct sc_frame_sink *sink) {
-    struct sc_v4l2_sink *vs = DOWNCAST(sink);
-    sc_v4l2_sink_close(vs);
-}
-
-static bool
-sc_v4l2_frame_sink_push(struct sc_frame_sink *sink, const AVFrame *frame) {
-    struct sc_v4l2_sink *vs = DOWNCAST(sink);
-    return sc_v4l2_sink_push(vs, frame);
-}
-
-bool
-sc_v4l2_sink_init(struct sc_v4l2_sink *vs, const char *device_name,
-                  struct size frame_size) {
-    vs->device_name = strdup(device_name);
-    if (!vs->device_name) {
-        LOGE("Could not strdup v4l2 device name");
-        return false;
-    }
-
-    vs->frame_size = frame_size;
-
-    static const struct sc_frame_sink_ops ops = {
-        .open = sc_v4l2_frame_sink_open,
-        .close = sc_v4l2_frame_sink_close,
-        .push = sc_v4l2_frame_sink_push,
-    };
-
-    vs->frame_sink.ops = &ops;
-
-    return true;
-}
-
-void
-sc_v4l2_sink_destroy(struct sc_v4l2_sink *vs) {
-    free(vs->device_name);
-}
--- a/app/src/v4l2_sink.h
+++ b/app/src/v4l2_sink.h
@ -1,39 +0,0 @@
-#ifndef SC_V4L2_SINK_H
-#define SC_V4L2_SINK_H
-
-#include "common.h"
-
-#include "coords.h"
-#include "trait/frame_sink.h"
-#include "video_buffer.h"
-
-#include <libavformat/avformat.h>
-
-struct sc_v4l2_sink {
-    struct sc_frame_sink frame_sink; // frame sink trait
-
-    struct video_buffer vb;
-    AVFormatContext *format_ctx;
-    AVCodecContext *encoder_ctx;
-
-    char *device_name;
-    struct size frame_size;
-
-    sc_thread thread;
-    sc_mutex mutex;
-    sc_cond cond;
-    bool stopped;
-    bool header_written;
-
-    AVFrame *frame;
-    AVPacket packet;
-};
-
-bool
-sc_v4l2_sink_init(struct sc_v4l2_sink *vs, const char *device_name,
-                  struct size frame_size);
-
-void
-sc_v4l2_sink_destroy(struct sc_v4l2_sink *vs);
-
-#endif
--- a/app/src/video_buffer.c
+++ b/app/src/video_buffer.c
@ -7,82 +7,133 @@
 #include "util/log.h"

 bool
-video_buffer_init(struct video_buffer *vb) {
-    vb->pending_frame = av_frame_alloc();
-    if (!vb->pending_frame) {
-        return false;
+video_buffer_init(struct video_buffer *vb, struct fps_counter *fps_counter,
+                  bool render_expired_frames) {
+    vb->fps_counter = fps_counter;
+
+    vb->decoding_frame = av_frame_alloc();
+    if (!vb->decoding_frame) {
+        goto error_0;
    }

-    vb->tmp_frame = av_frame_alloc();
-    if (!vb->tmp_frame) {
-        av_frame_free(&vb->pending_frame);
-        return false;
+    vb->pending_frame = av_frame_alloc();
+    if (!vb->pending_frame) {
+        goto error_1;
+    }
+
+    vb->rendering_frame = av_frame_alloc();
+    if (!vb->rendering_frame) {
+        goto error_2;
    }

    bool ok = sc_mutex_init(&vb->mutex);
    if (!ok) {
-        av_frame_free(&vb->pending_frame);
-        av_frame_free(&vb->tmp_frame);
-        return false;
+        goto error_3;
    }

-    // there is initially no frame, so consider it has already been consumed
+    vb->render_expired_frames = render_expired_frames;
+    if (render_expired_frames) {
+        ok = sc_cond_init(&vb->pending_frame_consumed_cond);
+        if (!ok) {
+            sc_mutex_destroy(&vb->mutex);
+            goto error_2;
+        }
+        // interrupted is not used if expired frames are not rendered
+        // since offering a frame will never block
+        vb->interrupted = false;
+    }
+
+    // there is initially no rendering frame, so consider it has already been
+    // consumed
    vb->pending_frame_consumed = true;

    return true;
+
+error_3:
+    av_frame_free(&vb->rendering_frame);
+error_2:
+    av_frame_free(&vb->pending_frame);
+error_1:
+    av_frame_free(&vb->decoding_frame);
+error_0:
+    return false;
 }

 void
 video_buffer_destroy(struct video_buffer *vb) {
+    if (vb->render_expired_frames) {
+        sc_cond_destroy(&vb->pending_frame_consumed_cond);
+    }
    sc_mutex_destroy(&vb->mutex);
+    av_frame_free(&vb->rendering_frame);
    av_frame_free(&vb->pending_frame);
-    av_frame_free(&vb->tmp_frame);
+    av_frame_free(&vb->decoding_frame);
 }

-static inline void
-swap_frames(AVFrame **lhs, AVFrame **rhs) {
-    AVFrame *tmp = *lhs;
-    *lhs = *rhs;
-    *rhs = tmp;
+static void
+video_buffer_swap_decoding_frame(struct video_buffer *vb) {
+    sc_mutex_assert(&vb->mutex);
+    AVFrame *tmp = vb->decoding_frame;
+    vb->decoding_frame = vb->pending_frame;
+    vb->pending_frame = tmp;
 }

-bool
-video_buffer_push(struct video_buffer *vb, const AVFrame *frame,
-                  bool *previous_frame_skipped) {
-    sc_mutex_lock(&vb->mutex);
-
-    // Use a temporary frame to preserve pending_frame in case of error.
-    // tmp_frame is an empty frame, no need to call av_frame_unref() beforehand.
-    int r = av_frame_ref(vb->tmp_frame, frame);
-    if (r) {
-        LOGE("Could not ref frame: %d", r);
-        return false;
-    }
-
-    // Now that av_frame_ref() succeeded, we can replace the previous
-    // pending_frame
-    swap_frames(&vb->pending_frame, &vb->tmp_frame);
-    av_frame_unref(vb->tmp_frame);
-
-    if (previous_frame_skipped) {
-        *previous_frame_skipped = !vb->pending_frame_consumed;
-    }
-    vb->pending_frame_consumed = false;
-
-    sc_mutex_unlock(&vb->mutex);
-
-    return true;
+static void
+video_buffer_swap_rendering_frame(struct video_buffer *vb) {
+    sc_mutex_assert(&vb->mutex);
+    AVFrame *tmp = vb->rendering_frame;
+    vb->rendering_frame = vb->pending_frame;
+    vb->pending_frame = tmp;
 }

 void
-video_buffer_consume(struct video_buffer *vb, AVFrame *dst) {
+video_buffer_offer_decoded_frame(struct video_buffer *vb,
+                                 bool *previous_frame_skipped) {
+    sc_mutex_lock(&vb->mutex);
+    if (vb->render_expired_frames) {
+        // wait for the current (expired) frame to be consumed
+        while (!vb->pending_frame_consumed && !vb->interrupted) {
+            sc_cond_wait(&vb->pending_frame_consumed_cond, &vb->mutex);
+        }
+    } else if (!vb->pending_frame_consumed) {
+        fps_counter_add_skipped_frame(vb->fps_counter);
+    }
+
+    video_buffer_swap_decoding_frame(vb);
+
+    *previous_frame_skipped = !vb->pending_frame_consumed;
+    vb->pending_frame_consumed = false;
+
+    sc_mutex_unlock(&vb->mutex);
+}
+
+const AVFrame *
+video_buffer_take_rendering_frame(struct video_buffer *vb) {
    sc_mutex_lock(&vb->mutex);
    assert(!vb->pending_frame_consumed);
    vb->pending_frame_consumed = true;

-    av_frame_move_ref(dst, vb->pending_frame);
-    // av_frame_move_ref() resets its source frame, so no need to call
-    // av_frame_unref()
+    fps_counter_add_rendered_frame(vb->fps_counter);

+    video_buffer_swap_rendering_frame(vb);
+
+    if (vb->render_expired_frames) {
+        // unblock video_buffer_offer_decoded_frame()
+        sc_cond_signal(&vb->pending_frame_consumed_cond);
+    }
    sc_mutex_unlock(&vb->mutex);
+
+    // rendering_frame is only written from this thread, no need to lock
+    return vb->rendering_frame;
+}
+
+void
+video_buffer_interrupt(struct video_buffer *vb) {
+    if (vb->render_expired_frames) {
+        sc_mutex_lock(&vb->mutex);
+        vb->interrupted = true;
+        sc_mutex_unlock(&vb->mutex);
+        // wake up blocking wait
+        sc_cond_signal(&vb->pending_frame_consumed_cond);
+    }
 }
--- a/app/src/video_buffer.h
+++ b/app/src/video_buffer.h
@ -12,39 +12,57 @@
 typedef struct AVFrame AVFrame;

 /**
- * A video buffer holds 1 pending frame, which is the last frame received from
- * the producer (typically, the decoder).
+ * There are 3 frames in memory:
+ *  - one frame is held by the decoder (decoding_frame)
+ *  - one frame is held by the renderer (rendering_frame)
+ *  - one frame is shared between the decoder and the renderer (pending_frame)
 *
- * If a pending frame has not been consumed when the producer pushes a new
- * frame, then it is lost. The intent is to always provide access to the very
- * last frame to minimize latency.
+ * The decoder decodes a packet into the decoding_frame (it may takes time).
 *
- * The producer and the consumer typically do not live in the same thread.
- * That's the reason why the callback on_frame_available() does not provide the
- * frame as parameter: the consumer might post an event to its own thread to
- * retrieve the pending frame from there, and that frame may have changed since
- * the callback if producer pushed a new one in between.
+ * Once the frame is decoded, it calls video_buffer_offer_decoded_frame(),
+ * which swaps the decoding and pending frames.
+ *
+ * When the renderer is notified that a new frame is available, it calls
+ * video_buffer_take_rendering_frame() to retrieve it, which swaps the pending
+ * and rendering frames. The frame is valid until the next call, without
+ * blocking the decoder.
 */

 struct video_buffer {
+    AVFrame *decoding_frame;
    AVFrame *pending_frame;
-    AVFrame *tmp_frame; // To preserve the pending frame on error
+    AVFrame *rendering_frame;

    sc_mutex mutex;
+    bool render_expired_frames;
+    bool interrupted;

+    sc_cond pending_frame_consumed_cond;
    bool pending_frame_consumed;
+
+    struct fps_counter *fps_counter;
 };

 bool
-video_buffer_init(struct video_buffer *vb);
+video_buffer_init(struct video_buffer *vb, struct fps_counter *fps_counter,
+                  bool render_expired_frames);

 void
 video_buffer_destroy(struct video_buffer *vb);

-bool
-video_buffer_push(struct video_buffer *vb, const AVFrame *frame, bool *skipped);
-
+// set the decoded frame as ready for rendering
+// the output flag is set to report whether the previous frame has been skipped
 void
-video_buffer_consume(struct video_buffer *vb, AVFrame *dst);
+video_buffer_offer_decoded_frame(struct video_buffer *vb,
+                                 bool *previous_frame_skipped);
+
+// mark the rendering frame as consumed and return it
+// the frame is valid until the next call to this function
+const AVFrame *
+video_buffer_take_rendering_frame(struct video_buffer *vb);
+
+// wake up and avoid any blocking call
+void
+video_buffer_interrupt(struct video_buffer *vb);

 #endif
--- a/app/tests/test_cli.c
+++ b/app/tests/test_cli.c
@ -58,6 +58,7 @@ static void test_options(void) {
        "--push-target", "/sdcard/Movies",
        "--record", "file",
        "--record-format", "mkv",
+        "--render-expired-frames",
        "--serial", "0123456789abcdef",
        "--show-touches",
        "--turn-screen-off",
@ -86,6 +87,7 @@ static void test_options(void) {
    assert(!strcmp(opts->push_target, "/sdcard/Movies"));
    assert(!strcmp(opts->record_filename, "file"));
    assert(opts->record_format == SC_RECORD_FORMAT_MKV);
+    assert(opts->render_expired_frames);
    assert(!strcmp(opts->serial, "0123456789abcdef"));
    assert(opts->show_touches);
    assert(opts->turn_screen_off);
--- a/app/tests/test_control_msg_serialize.c
+++ b/app/tests/test_control_msg_serialize.c
@ -146,18 +146,14 @@ static void test_serialize_inject_scroll_event(void) {
 static void test_serialize_back_or_screen_on(void) {
    struct control_msg msg = {
        .type = CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON,
-        .back_or_screen_on = {
-            .action = AKEY_EVENT_ACTION_UP,
-        },
    };

    unsigned char buf[CONTROL_MSG_MAX_SIZE];
    size_t size = control_msg_serialize(&msg, buf);
-    assert(size == 2);
+    assert(size == 1);

    const unsigned char expected[] = {
        CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON,
-        0x01, // AKEY_EVENT_ACTION_UP
    };
    assert(!memcmp(buf, expected, sizeof(expected)));
 }
@ -177,9 +173,9 @@ static void test_serialize_expand_notification_panel(void) {
    assert(!memcmp(buf, expected, sizeof(expected)));
 }

-static void test_serialize_expand_settings_panel(void) {
+static void test_serialize_collapse_notification_panel(void) {
    struct control_msg msg = {
-        .type = CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL,
+        .type = CONTROL_MSG_TYPE_COLLAPSE_NOTIFICATION_PANEL,
    };

    unsigned char buf[CONTROL_MSG_MAX_SIZE];
@ -187,22 +183,7 @@ static void test_serialize_expand_settings_panel(void) {
    assert(size == 1);

    const unsigned char expected[] = {
-        CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL,
-    };
-    assert(!memcmp(buf, expected, sizeof(expected)));
-}
-
-static void test_serialize_collapse_panels(void) {
-    struct control_msg msg = {
-        .type = CONTROL_MSG_TYPE_COLLAPSE_PANELS,
-    };
-
-    unsigned char buf[CONTROL_MSG_MAX_SIZE];
-    size_t size = control_msg_serialize(&msg, buf);
-    assert(size == 1);
-
-    const unsigned char expected[] = {
-        CONTROL_MSG_TYPE_COLLAPSE_PANELS,
+        CONTROL_MSG_TYPE_COLLAPSE_NOTIFICATION_PANEL,
    };
    assert(!memcmp(buf, expected, sizeof(expected)));
 }
@ -289,8 +270,7 @@ int main(int argc, char *argv[]) {
    test_serialize_inject_scroll_event();
    test_serialize_back_or_screen_on();
    test_serialize_expand_notification_panel();
-    test_serialize_expand_settings_panel();
-    test_serialize_collapse_panels();
+    test_serialize_collapse_notification_panel();
    test_serialize_get_clipboard();
    test_serialize_set_clipboard();
    test_serialize_set_screen_power_mode();
--- a/app/tests/test_strutil.c
+++ b/app/tests/test_strutil.c
@ -287,18 +287,6 @@ static void test_parse_integer_with_suffix(void) {
    assert(!ok);
 }

-static void test_strlist_contains(void) {
-    assert(strlist_contains("a,bc,def", ',', "bc"));
-    assert(!strlist_contains("a,bc,def", ',', "b"));
-    assert(strlist_contains("", ',', ""));
-    assert(strlist_contains("abc,", ',', ""));
-    assert(strlist_contains(",abc", ',', ""));
-    assert(strlist_contains("abc,,def", ',', ""));
-    assert(!strlist_contains("abc", ',', ""));
-    assert(strlist_contains(",,|x", '|', ",,"));
-    assert(strlist_contains("xyz", '\0', "xyz"));
-}
-
 int main(int argc, char *argv[]) {
    (void) argc;
    (void) argv;
@ -316,6 +304,5 @@ int main(int argc, char *argv[]) {
    test_parse_integer();
    test_parse_integers();
    test_parse_integer_with_suffix();
-    test_strlist_contains();
    return 0;
 }
--- a/cross_win32.txt
+++ b/cross_win32.txt
@ -2,11 +2,11 @@

 [binaries]
 name = 'mingw'
-c = 'i686-w64-mingw32-gcc'
-cpp = 'i686-w64-mingw32-g++'
-ar = 'i686-w64-mingw32-ar'
-strip = 'i686-w64-mingw32-strip'
-pkgconfig = 'i686-w64-mingw32-pkg-config'
+c = '/usr/bin/i686-w64-mingw32-gcc'
+cpp = '/usr/bin/i686-w64-mingw32-g++'
+ar = '/usr/bin/i686-w64-mingw32-ar'
+strip = '/usr/bin/i686-w64-mingw32-strip'
+pkgconfig = '/usr/bin/i686-w64-mingw32-pkg-config'

 [host_machine]
 system = 'windows'
--- a/cross_win64.txt
+++ b/cross_win64.txt
@ -2,11 +2,11 @@

 [binaries]
 name = 'mingw'
-c = 'x86_64-w64-mingw32-gcc'
-cpp = 'x86_64-w64-mingw32-g++'
-ar = 'x86_64-w64-mingw32-ar'
-strip = 'x86_64-w64-mingw32-strip'
-pkgconfig = 'x86_64-w64-mingw32-pkg-config'
+c = '/usr/bin/x86_64-w64-mingw32-gcc'
+cpp = '/usr/bin/x86_64-w64-mingw32-g++'
+ar = '/usr/bin/x86_64-w64-mingw32-ar'
+strip = '/usr/bin/x86_64-w64-mingw32-strip'
+pkgconfig = '/usr/bin/x86_64-w64-mingw32-pkg-config'

 [host_machine]
 system = 'windows'
--- a/data/scrcpy-noconsole.vbs
+++ b/data/scrcpy-noconsole.vbs
@ -1,7 +1 @@
-strCommand = "cmd /c scrcpy.exe"
-
-For Each Arg In WScript.Arguments
-    strCommand = strCommand & " """ & replace(Arg, """", """""""""") & """"
-Next
-
-CreateObject("Wscript.Shell").Run strCommand, 0, false
+CreateObject("Wscript.Shell").Run "cmd /c scrcpy.exe", 0, false
--- a/meson.build
+++ b/meson.build
@ -4,7 +4,6 @@ project('scrcpy', 'c',
        default_options: [
            'c_std=c11',
            'warning_level=2',
-            'b_ndebug=if-release',
        ])

 if get_option('compile_app')
--- a/meson_options.txt
+++ b/meson_options.txt
@ -3,5 +3,6 @@ option('compile_server', type: 'boolean', value: true, description: 'Build the s
 option('crossbuild_windows', type: 'boolean', value: false, description: 'Build for Windows from Linux')
 option('prebuilt_server', type: 'string', description: 'Path of the prebuilt server')
 option('portable', type: 'boolean', value: false, description: 'Use scrcpy-server from the same directory as the scrcpy executable')
+option('hidpi_support', type: 'boolean', value: true, description: 'Enable High DPI support')
 option('server_debugger', type: 'boolean', value: false, description: 'Run a server debugger and wait for a client to be attached')
 option('server_debugger_method', type: 'combo', choices: ['old', 'new'], value: 'new', description: 'Select the debugger method (Android < 9: "old", Android >= 9: "new")')
--- a/server/src/main/java/com/genymobile/scrcpy/CleanUp.java
+++ b/server/src/main/java/com/genymobile/scrcpy/CleanUp.java
@ -3,10 +3,6 @@ package com.genymobile.scrcpy;
 import com.genymobile.scrcpy.wrappers.ContentProvider;
 import com.genymobile.scrcpy.wrappers.ServiceManager;

-import android.os.Parcel;
-import android.os.Parcelable;
-import android.util.Base64;
-
 import java.io.File;
 import java.io.IOException;

@ -19,123 +15,23 @@ public final class CleanUp {

    public static final String SERVER_PATH = "/data/local/tmp/scrcpy-server.jar";

-    // A simple struct to be passed from the main process to the cleanup process
-    public static class Config implements Parcelable {
-
-        public static final Creator<Config> CREATOR = new Creator<Config>() {
-            @Override
-            public Config createFromParcel(Parcel in) {
-                return new Config(in);
-            }
-
-            @Override
-            public Config[] newArray(int size) {
-                return new Config[size];
-            }
-        };
-
-        private static final int FLAG_DISABLE_SHOW_TOUCHES = 1;
-        private static final int FLAG_RESTORE_NORMAL_POWER_MODE = 2;
-        private static final int FLAG_POWER_OFF_SCREEN = 4;
-
-        private int displayId;
-
-        // Restore the value (between 0 and 7), -1 to not restore
-        // <https://developer.android.com/reference/android/provider/Settings.Global#STAY_ON_WHILE_PLUGGED_IN>
-        private int restoreStayOn = -1;
-
-        private boolean disableShowTouches;
-        private boolean restoreNormalPowerMode;
-        private boolean powerOffScreen;
-
-        public Config() {
-            // Default constructor, the fields are initialized by CleanUp.configure()
-        }
-
-        protected Config(Parcel in) {
-            displayId = in.readInt();
-            restoreStayOn = in.readInt();
-            byte options = in.readByte();
-            disableShowTouches = (options & FLAG_DISABLE_SHOW_TOUCHES) != 0;
-            restoreNormalPowerMode = (options & FLAG_RESTORE_NORMAL_POWER_MODE) != 0;
-            powerOffScreen = (options & FLAG_POWER_OFF_SCREEN) != 0;
-        }
-
-        @Override
-        public void writeToParcel(Parcel dest, int flags) {
-            dest.writeInt(displayId);
-            dest.writeInt(restoreStayOn);
-            byte options = 0;
-            if (disableShowTouches) {
-                options |= FLAG_DISABLE_SHOW_TOUCHES;
-            }
-            if (restoreNormalPowerMode) {
-                options |= FLAG_RESTORE_NORMAL_POWER_MODE;
-            }
-            if (powerOffScreen) {
-                options |= FLAG_POWER_OFF_SCREEN;
-            }
-            dest.writeByte(options);
-        }
-
-        private boolean hasWork() {
-            return disableShowTouches || restoreStayOn != -1 || restoreNormalPowerMode || powerOffScreen;
-        }
-
-        @Override
-        public int describeContents() {
-            return 0;
-        }
-
-        byte[] serialize() {
-            Parcel parcel = Parcel.obtain();
-            writeToParcel(parcel, 0);
-            byte[] bytes = parcel.marshall();
-            parcel.recycle();
-            return bytes;
-        }
-
-        static Config deserialize(byte[] bytes) {
-            Parcel parcel = Parcel.obtain();
-            parcel.unmarshall(bytes, 0, bytes.length);
-            parcel.setDataPosition(0);
-            return CREATOR.createFromParcel(parcel);
-        }
-
-        static Config fromBase64(String base64) {
-            byte[] bytes = Base64.decode(base64, Base64.NO_WRAP);
-            return deserialize(bytes);
-        }
-
-        String toBase64() {
-            byte[] bytes = serialize();
-            return Base64.encodeToString(bytes, Base64.NO_WRAP);
-        }
-    }
-
    private CleanUp() {
        // not instantiable
    }

-    public static void configure(int displayId, int restoreStayOn, boolean disableShowTouches, boolean restoreNormalPowerMode, boolean powerOffScreen)
-            throws IOException {
-        Config config = new Config();
-        config.displayId = displayId;
-        config.disableShowTouches = disableShowTouches;
-        config.restoreStayOn = restoreStayOn;
-        config.restoreNormalPowerMode = restoreNormalPowerMode;
-        config.powerOffScreen = powerOffScreen;
-
-        if (config.hasWork()) {
-            startProcess(config);
+    public static void configure(boolean disableShowTouches, int restoreStayOn, boolean restoreNormalPowerMode) throws IOException {
+        boolean needProcess = disableShowTouches || restoreStayOn != -1 || restoreNormalPowerMode;
+        if (needProcess) {
+            startProcess(disableShowTouches, restoreStayOn, restoreNormalPowerMode);
        } else {
            // There is no additional clean up to do when scrcpy dies
            unlinkSelf();
        }
    }

-    private static void startProcess(Config config) throws IOException {
-        String[] cmd = {"app_process", "/", CleanUp.class.getName(), config.toBase64()};
+    private static void startProcess(boolean disableShowTouches, int restoreStayOn, boolean restoreNormalPowerMode) throws IOException {
+        String[] cmd = {"app_process", "/", CleanUp.class.getName(), String.valueOf(disableShowTouches), String.valueOf(
+                restoreStayOn), String.valueOf(restoreNormalPowerMode)};

        ProcessBuilder builder = new ProcessBuilder(cmd);
        builder.environment().put("CLASSPATH", SERVER_PATH);
@ -162,28 +58,27 @@ public final class CleanUp {

        Ln.i("Cleaning up");

-        Config config = Config.fromBase64(args[0]);
+        boolean disableShowTouches = Boolean.parseBoolean(args[0]);
+        int restoreStayOn = Integer.parseInt(args[1]);
+        boolean restoreNormalPowerMode = Boolean.parseBoolean(args[2]);

-        if (config.disableShowTouches || config.restoreStayOn != -1) {
+        if (disableShowTouches || restoreStayOn != -1) {
            ServiceManager serviceManager = new ServiceManager();
            try (ContentProvider settings = serviceManager.getActivityManager().createSettingsProvider()) {
-                if (config.disableShowTouches) {
+                if (disableShowTouches) {
                    Ln.i("Disabling \"show touches\"");
                    settings.putValue(ContentProvider.TABLE_SYSTEM, "show_touches", "0");
                }
-                if (config.restoreStayOn != -1) {
+                if (restoreStayOn != -1) {
                    Ln.i("Restoring \"stay awake\"");
-                    settings.putValue(ContentProvider.TABLE_GLOBAL, "stay_on_while_plugged_in", String.valueOf(config.restoreStayOn));
+                    settings.putValue(ContentProvider.TABLE_GLOBAL, "stay_on_while_plugged_in", String.valueOf(restoreStayOn));
                }
            }
        }

-        if (Device.isScreenOn()) {
-            if (config.powerOffScreen) {
-                Ln.i("Power off screen");
-                Device.powerOffScreen(config.displayId);
-            } else if (config.restoreNormalPowerMode) {
-                Ln.i("Restoring normal power mode");
+        if (restoreNormalPowerMode) {
+            Ln.i("Restoring normal power mode");
+            if (Device.isScreenOn()) {
                Device.setScreenPowerMode(Device.POWER_MODE_NORMAL);
            }
        }
--- a/server/src/main/java/com/genymobile/scrcpy/ControlMessage.java
+++ b/server/src/main/java/com/genymobile/scrcpy/ControlMessage.java
@ -11,12 +11,11 @@ public final class ControlMessage {
    public static final int TYPE_INJECT_SCROLL_EVENT = 3;
    public static final int TYPE_BACK_OR_SCREEN_ON = 4;
    public static final int TYPE_EXPAND_NOTIFICATION_PANEL = 5;
-    public static final int TYPE_EXPAND_SETTINGS_PANEL = 6;
-    public static final int TYPE_COLLAPSE_PANELS = 7;
-    public static final int TYPE_GET_CLIPBOARD = 8;
-    public static final int TYPE_SET_CLIPBOARD = 9;
-    public static final int TYPE_SET_SCREEN_POWER_MODE = 10;
-    public static final int TYPE_ROTATE_DEVICE = 11;
+    public static final int TYPE_COLLAPSE_NOTIFICATION_PANEL = 6;
+    public static final int TYPE_GET_CLIPBOARD = 7;
+    public static final int TYPE_SET_CLIPBOARD = 8;
+    public static final int TYPE_SET_SCREEN_POWER_MODE = 9;
+    public static final int TYPE_ROTATE_DEVICE = 10;

    private int type;
    private String text;
@ -72,13 +71,6 @@ public final class ControlMessage {
        return msg;
    }

-    public static ControlMessage createBackOrScreenOn(int action) {
-        ControlMessage msg = new ControlMessage();
-        msg.type = TYPE_BACK_OR_SCREEN_ON;
-        msg.action = action;
-        return msg;
-    }
-
    public static ControlMessage createSetClipboard(String text, boolean paste) {
        ControlMessage msg = new ControlMessage();
        msg.type = TYPE_SET_CLIPBOARD;
--- a/server/src/main/java/com/genymobile/scrcpy/ControlMessageReader.java
+++ b/server/src/main/java/com/genymobile/scrcpy/ControlMessageReader.java
@ -11,7 +11,6 @@ public class ControlMessageReader {
    static final int INJECT_KEYCODE_PAYLOAD_LENGTH = 13;
    static final int INJECT_TOUCH_EVENT_PAYLOAD_LENGTH = 27;
    static final int INJECT_SCROLL_EVENT_PAYLOAD_LENGTH = 20;
-    static final int BACK_OR_SCREEN_ON_LENGTH = 1;
    static final int SET_SCREEN_POWER_MODE_PAYLOAD_LENGTH = 1;
    static final int SET_CLIPBOARD_FIXED_PAYLOAD_LENGTH = 1;

@ -67,18 +66,15 @@ public class ControlMessageReader {
            case ControlMessage.TYPE_INJECT_SCROLL_EVENT:
                msg = parseInjectScrollEvent();
                break;
-            case ControlMessage.TYPE_BACK_OR_SCREEN_ON:
-                msg = parseBackOrScreenOnEvent();
-                break;
            case ControlMessage.TYPE_SET_CLIPBOARD:
                msg = parseSetClipboard();
                break;
            case ControlMessage.TYPE_SET_SCREEN_POWER_MODE:
                msg = parseSetScreenPowerMode();
                break;
+            case ControlMessage.TYPE_BACK_OR_SCREEN_ON:
            case ControlMessage.TYPE_EXPAND_NOTIFICATION_PANEL:
-            case ControlMessage.TYPE_EXPAND_SETTINGS_PANEL:
-            case ControlMessage.TYPE_COLLAPSE_PANELS:
+            case ControlMessage.TYPE_COLLAPSE_NOTIFICATION_PANEL:
            case ControlMessage.TYPE_GET_CLIPBOARD:
            case ControlMessage.TYPE_ROTATE_DEVICE:
                msg = ControlMessage.createEmpty(type);
@ -154,14 +150,6 @@ public class ControlMessageReader {
        return ControlMessage.createInjectScrollEvent(position, hScroll, vScroll);
    }

-    private ControlMessage parseBackOrScreenOnEvent() {
-        if (buffer.remaining() < BACK_OR_SCREEN_ON_LENGTH) {
-            return null;
-        }
-        int action = toUnsigned(buffer.get());
-        return ControlMessage.createBackOrScreenOn(action);
-    }
-
    private ControlMessage parseSetClipboard() {
        if (buffer.remaining() < SET_CLIPBOARD_FIXED_PAYLOAD_LENGTH) {
            return null;
--- a/server/src/main/java/com/genymobile/scrcpy/Controller.java
+++ b/server/src/main/java/com/genymobile/scrcpy/Controller.java
@ -14,7 +14,7 @@ import java.util.concurrent.TimeUnit;

 public class Controller {

-    private static final int DEFAULT_DEVICE_ID = 0;
+    private static final int DEVICE_ID_VIRTUAL = -1;

    private static final ScheduledExecutorService EXECUTOR = Executors.newSingleThreadScheduledExecutor();

@ -45,7 +45,7 @@ public class Controller {

            MotionEvent.PointerCoords coords = new MotionEvent.PointerCoords();
            coords.orientation = 0;
-            coords.size = 0;
+            coords.size = 1;

            pointerProperties[i] = props;
            pointerCoords[i] = coords;
@ -55,7 +55,7 @@ public class Controller {
    public void control() throws IOException {
        // on start, power on the device
        if (!Device.isScreenOn()) {
-            device.pressReleaseKeycode(KeyEvent.KEYCODE_POWER);
+            device.injectKeycode(KeyEvent.KEYCODE_POWER);

            // dirty hack
            // After POWER is injected, the device is powered on asynchronously.
@ -101,16 +101,13 @@ public class Controller {
                break;
            case ControlMessage.TYPE_BACK_OR_SCREEN_ON:
                if (device.supportsInputEvents()) {
-                    pressBackOrTurnScreenOn(msg.getAction());
+                    pressBackOrTurnScreenOn();
                }
                break;
            case ControlMessage.TYPE_EXPAND_NOTIFICATION_PANEL:
                Device.expandNotificationPanel();
                break;
-            case ControlMessage.TYPE_EXPAND_SETTINGS_PANEL:
-                Device.expandSettingsPanel();
-                break;
-            case ControlMessage.TYPE_COLLAPSE_PANELS:
+            case ControlMessage.TYPE_COLLAPSE_NOTIFICATION_PANEL:
                Device.collapsePanels();
                break;
            case ControlMessage.TYPE_GET_CLIPBOARD:
@ -211,13 +208,9 @@ public class Controller {
        // Right-click and middle-click only work if the source is a mouse
        boolean nonPrimaryButtonPressed = (buttons & ~MotionEvent.BUTTON_PRIMARY) != 0;
        int source = nonPrimaryButtonPressed ? InputDevice.SOURCE_MOUSE : InputDevice.SOURCE_TOUCHSCREEN;
-        if (source != InputDevice.SOURCE_MOUSE) {
-            // Buttons must not be set for touch events
-            buttons = 0;
-        }

        MotionEvent event = MotionEvent
-                .obtain(lastTouchDown, now, action, pointerCount, pointerProperties, pointerCoords, 0, buttons, 1f, 1f, DEFAULT_DEVICE_ID, 0, source,
+                .obtain(lastTouchDown, now, action, pointerCount, pointerProperties, pointerCoords, 0, buttons, 1f, 1f, DEVICE_ID_VIRTUAL, 0, source,
                        0);
        return device.injectEvent(event);
    }
@ -240,7 +233,7 @@ public class Controller {
        coords.setAxisValue(MotionEvent.AXIS_VSCROLL, vScroll);

        MotionEvent event = MotionEvent
-                .obtain(lastTouchDown, now, MotionEvent.ACTION_SCROLL, 1, pointerProperties, pointerCoords, 0, 0, 1f, 1f, DEFAULT_DEVICE_ID, 0,
+                .obtain(lastTouchDown, now, MotionEvent.ACTION_SCROLL, 1, pointerProperties, pointerCoords, 0, 0, 1f, 1f, DEVICE_ID_VIRTUAL, 0,
                        InputDevice.SOURCE_TOUCHSCREEN, 0);
        return device.injectEvent(event);
    }
@ -258,22 +251,12 @@ public class Controller {
        }, 200, TimeUnit.MILLISECONDS);
    }

-    private boolean pressBackOrTurnScreenOn(int action) {
-        if (Device.isScreenOn()) {
-            return device.injectKeyEvent(action, KeyEvent.KEYCODE_BACK, 0, 0);
-        }
-
-        // Screen is off
-        // Only press POWER on ACTION_DOWN
-        if (action != KeyEvent.ACTION_DOWN) {
-            // do nothing,
-            return true;
-        }
-
-        if (keepPowerModeOff) {
+    private boolean pressBackOrTurnScreenOn() {
+        int keycode = Device.isScreenOn() ? KeyEvent.KEYCODE_BACK : KeyEvent.KEYCODE_POWER;
+        if (keepPowerModeOff && keycode == KeyEvent.KEYCODE_POWER) {
            schedulePowerModeOff();
        }
-        return device.pressReleaseKeycode(KeyEvent.KEYCODE_POWER);
+        return device.injectKeycode(keycode);
    }

    private boolean setClipboard(String text, boolean paste) {
@ -284,7 +267,7 @@ public class Controller {

        // On Android >= 7, also press the PASTE key if requested
        if (paste && Build.VERSION.SDK_INT >= Build.VERSION_CODES.N && device.supportsInputEvents()) {
-            device.pressReleaseKeycode(KeyEvent.KEYCODE_PASTE);
+            device.injectKeycode(KeyEvent.KEYCODE_PASTE);
        }

        return ok;
--- a/server/src/main/java/com/genymobile/scrcpy/Device.java
+++ b/server/src/main/java/com/genymobile/scrcpy/Device.java
@ -25,9 +25,6 @@ public final class Device {
    public static final int POWER_MODE_OFF = SurfaceControl.POWER_MODE_OFF;
    public static final int POWER_MODE_NORMAL = SurfaceControl.POWER_MODE_NORMAL;

-    public static final int LOCK_VIDEO_ORIENTATION_UNLOCKED = -1;
-    public static final int LOCK_VIDEO_ORIENTATION_INITIAL = -2;
-
    private static final ServiceManager SERVICE_MANAGER = new ServiceManager();

    public interface RotationListener {
@ -156,16 +153,12 @@ public final class Device {
        return Build.MODEL;
    }

-    public static boolean supportsInputEvents(int displayId) {
-        return displayId == 0 || Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q;
-    }
-
    public boolean supportsInputEvents() {
        return supportsInputEvents;
    }

-    public static boolean injectEvent(InputEvent inputEvent, int displayId) {
-        if (!supportsInputEvents(displayId)) {
+    public boolean injectEvent(InputEvent inputEvent, int mode) {
+        if (!supportsInputEvents()) {
            throw new AssertionError("Could not inject input event if !supportsInputEvents()");
        }

@ -173,30 +166,22 @@ public final class Device {
            return false;
        }

-        return SERVICE_MANAGER.getInputManager().injectInputEvent(inputEvent, InputManager.INJECT_INPUT_EVENT_MODE_ASYNC);
+        return SERVICE_MANAGER.getInputManager().injectInputEvent(inputEvent, mode);
    }

    public boolean injectEvent(InputEvent event) {
-        return injectEvent(event, displayId);
-    }
-
-    public static boolean injectKeyEvent(int action, int keyCode, int repeat, int metaState, int displayId) {
-        long now = SystemClock.uptimeMillis();
-        KeyEvent event = new KeyEvent(now, now, action, keyCode, repeat, metaState, KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0,
-                InputDevice.SOURCE_KEYBOARD);
-        return injectEvent(event, displayId);
+        return injectEvent(event, InputManager.INJECT_INPUT_EVENT_MODE_ASYNC);
    }

    public boolean injectKeyEvent(int action, int keyCode, int repeat, int metaState) {
-        return injectKeyEvent(action, keyCode, repeat, metaState, displayId);
+        long now = SystemClock.uptimeMillis();
+        KeyEvent event = new KeyEvent(now, now, action, keyCode, repeat, metaState, KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0,
+                InputDevice.SOURCE_KEYBOARD);
+        return injectEvent(event);
    }

-    public static boolean pressReleaseKeycode(int keyCode, int displayId) {
-        return injectKeyEvent(KeyEvent.ACTION_DOWN, keyCode, 0, 0, displayId) && injectKeyEvent(KeyEvent.ACTION_UP, keyCode, 0, 0, displayId);
-    }
-
-    public boolean pressReleaseKeycode(int keyCode) {
-        return pressReleaseKeycode(keyCode, displayId);
+    public boolean injectKeycode(int keyCode) {
+        return injectKeyEvent(KeyEvent.ACTION_DOWN, keyCode, 0, 0) && injectKeyEvent(KeyEvent.ACTION_UP, keyCode, 0, 0);
    }

    public static boolean isScreenOn() {
@ -215,10 +200,6 @@ public final class Device {
        SERVICE_MANAGER.getStatusBarManager().expandNotificationsPanel();
    }

-    public static void expandSettingsPanel() {
-        SERVICE_MANAGER.getStatusBarManager().expandSettingsPanel();
-    }
-
    public static void collapsePanels() {
        SERVICE_MANAGER.getStatusBarManager().collapsePanels();
    }
@ -268,13 +249,6 @@ public final class Device {
        return SurfaceControl.setDisplayPowerMode(d, mode);
    }

-    public static boolean powerOffScreen(int displayId) {
-        if (!isScreenOn()) {
-            return true;
-        }
-        return pressReleaseKeycode(KeyEvent.KEYCODE_POWER, displayId);
-    }
-
    /**
     * Disable auto-rotation (if enabled), set the screen rotation and re-enable auto-rotation (if it was enabled).
     */
--- a/server/src/main/java/com/genymobile/scrcpy/Options.java
+++ b/server/src/main/java/com/genymobile/scrcpy/Options.java
@ -17,7 +17,6 @@ public class Options {
    private boolean stayAwake;
    private String codecOptions;
    private String encoderName;
-    private boolean powerOffScreenOnClose;

    public Ln.Level getLogLevel() {
        return logLevel;
@ -130,12 +129,4 @@ public class Options {
    public void setEncoderName(String encoderName) {
        this.encoderName = encoderName;
    }
-
-    public void setPowerOffScreenOnClose(boolean powerOffScreenOnClose) {
-        this.powerOffScreenOnClose = powerOffScreenOnClose;
-    }
-
-    public boolean getPowerOffScreenOnClose() {
-        return this.powerOffScreenOnClose;
-    }
 }
--- a/server/src/main/java/com/genymobile/scrcpy/ScreenInfo.java
+++ b/server/src/main/java/com/genymobile/scrcpy/ScreenInfo.java
@ -82,12 +82,6 @@ public final class ScreenInfo {

    public static ScreenInfo computeScreenInfo(DisplayInfo displayInfo, Rect crop, int maxSize, int lockedVideoOrientation) {
        int rotation = displayInfo.getRotation();
-
-        if (lockedVideoOrientation == Device.LOCK_VIDEO_ORIENTATION_INITIAL) {
-            // The user requested to lock the video orientation to the current orientation
-            lockedVideoOrientation = rotation;
-        }
-
        Size deviceSize = displayInfo.getSize();
        Rect contentRect = new Rect(0, 0, deviceSize.getWidth(), deviceSize.getHeight());
        if (crop != null) {
--- a/server/src/main/java/com/genymobile/scrcpy/Server.java
+++ b/server/src/main/java/com/genymobile/scrcpy/Server.java
@ -50,7 +50,7 @@ public final class Server {
            }
        }

-        CleanUp.configure(options.getDisplayId(), restoreStayOn, mustDisableShowTouchesOnCleanUp, true, options.getPowerOffScreenOnClose());
+        CleanUp.configure(mustDisableShowTouchesOnCleanUp, restoreStayOn, true);

        boolean tunnelForward = options.isTunnelForward();

@ -135,7 +135,7 @@ public final class Server {
                    "The server version (" + BuildConfig.VERSION_NAME + ") does not match the client " + "(" + clientVersion + ")");
        }

-        final int expectedParameters = 16;
+        final int expectedParameters = 15;
        if (args.length != expectedParameters) {
            throw new IllegalArgumentException("Expecting " + expectedParameters + " parameters");
        }
@ -185,9 +185,6 @@ public final class Server {
        String encoderName = "-".equals(args[14]) ? null : args[14];
        options.setEncoderName(encoderName);

-        boolean powerOffScreenOnClose = Boolean.parseBoolean(args[15]);
-        options.setPowerOffScreenOnClose(powerOffScreenOnClose);
-
        return options;
    }

@ -233,7 +230,7 @@ public final class Server {
            if (encoders != null && encoders.length > 0) {
                Ln.e("Try to use one of the available encoders:");
                for (MediaCodecInfo encoder : encoders) {
-                    Ln.e("    scrcpy --encoder '" + encoder.getName() + "'");
+                    Ln.e("    scrcpy --encoder-name '" + encoder.getName() + "'");
                }
            }
        }
--- a/server/src/main/java/com/genymobile/scrcpy/wrappers/ActivityManager.java
+++ b/server/src/main/java/com/genymobile/scrcpy/wrappers/ActivityManager.java
@ -14,7 +14,7 @@ public class ActivityManager {

    private final IInterface manager;
    private Method getContentProviderExternalMethod;
-    private boolean getContentProviderExternalMethodNewVersion = true;
+    private boolean getContentProviderExternalMethodLegacy;
    private Method removeContentProviderExternalMethod;

    public ActivityManager(IInterface manager) {
@ -29,7 +29,7 @@ public class ActivityManager {
            } catch (NoSuchMethodException e) {
                // old version
                getContentProviderExternalMethod = manager.getClass().getMethod("getContentProviderExternal", String.class, int.class, IBinder.class);
-                getContentProviderExternalMethodNewVersion = false;
+                getContentProviderExternalMethodLegacy = true;
            }
        }
        return getContentProviderExternalMethod;
@ -46,7 +46,7 @@ public class ActivityManager {
        try {
            Method method = getGetContentProviderExternalMethod();
            Object[] args;
-            if (getContentProviderExternalMethodNewVersion) {
+            if (!getContentProviderExternalMethodLegacy) {
                // new version
                args = new Object[]{name, ServiceManager.USER_ID, token, null};
            } else {
--- a/server/src/main/java/com/genymobile/scrcpy/wrappers/StatusBarManager.java
+++ b/server/src/main/java/com/genymobile/scrcpy/wrappers/StatusBarManager.java
@ -11,8 +11,6 @@ public class StatusBarManager {

    private final IInterface manager;
    private Method expandNotificationsPanelMethod;
-    private Method expandSettingsPanelMethod;
-    private boolean expandSettingsPanelMethodNewVersion = true;
    private Method collapsePanelsMethod;

    public StatusBarManager(IInterface manager) {
@ -26,20 +24,6 @@ public class StatusBarManager {
        return expandNotificationsPanelMethod;
    }

-    private Method getExpandSettingsPanel() throws NoSuchMethodException {
-        if (expandSettingsPanelMethod == null) {
-            try {
-                // Since Android 7: https://android.googlesource.com/platform/frameworks/base.git/+/a9927325eda025504d59bb6594fee8e240d95b01%5E%21/
-                expandSettingsPanelMethod = manager.getClass().getMethod("expandSettingsPanel", String.class);
-            } catch (NoSuchMethodException e) {
-                // old version
-                expandSettingsPanelMethod = manager.getClass().getMethod("expandSettingsPanel");
-                expandSettingsPanelMethodNewVersion = false;
-            }
-        }
-        return expandSettingsPanelMethod;
-    }
-
    private Method getCollapsePanelsMethod() throws NoSuchMethodException {
        if (collapsePanelsMethod == null) {
            collapsePanelsMethod = manager.getClass().getMethod("collapsePanels");
@ -56,21 +40,6 @@ public class StatusBarManager {
        }
    }

-    public void expandSettingsPanel() {
-        try {
-            Method method = getExpandSettingsPanel();
-            if (expandSettingsPanelMethodNewVersion) {
-                // new version
-                method.invoke(manager, (Object) null);
-            } else {
-                // old version
-                method.invoke(manager);
-            }
-        } catch (InvocationTargetException | IllegalAccessException | NoSuchMethodException e) {
-            Ln.e("Could not invoke method", e);
-        }
-    }
-
    public void collapsePanels() {
        try {
            Method method = getCollapsePanelsMethod();
--- a/server/src/test/java/com/genymobile/scrcpy/ControlMessageReaderTest.java
+++ b/server/src/test/java/com/genymobile/scrcpy/ControlMessageReaderTest.java
@ -154,7 +154,6 @@ public class ControlMessageReaderTest {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        DataOutputStream dos = new DataOutputStream(bos);
        dos.writeByte(ControlMessage.TYPE_BACK_OR_SCREEN_ON);
-        dos.writeByte(KeyEvent.ACTION_UP);

        byte[] packet = bos.toByteArray();

@ -162,7 +161,6 @@ public class ControlMessageReaderTest {
        ControlMessage event = reader.next();

        Assert.assertEquals(ControlMessage.TYPE_BACK_OR_SCREEN_ON, event.getType());
-        Assert.assertEquals(KeyEvent.ACTION_UP, event.getAction());
    }

    @Test
@ -182,35 +180,19 @@ public class ControlMessageReaderTest {
    }

    @Test
-    public void testParseExpandSettingsPanelEvent() throws IOException {
+    public void testParseCollapseNotificationPanelEvent() throws IOException {
        ControlMessageReader reader = new ControlMessageReader();

        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        DataOutputStream dos = new DataOutputStream(bos);
-        dos.writeByte(ControlMessage.TYPE_EXPAND_SETTINGS_PANEL);
+        dos.writeByte(ControlMessage.TYPE_COLLAPSE_NOTIFICATION_PANEL);

        byte[] packet = bos.toByteArray();

        reader.readFrom(new ByteArrayInputStream(packet));
        ControlMessage event = reader.next();

-        Assert.assertEquals(ControlMessage.TYPE_EXPAND_SETTINGS_PANEL, event.getType());
-    }
-
-    @Test
-    public void testParseCollapsePanelsEvent() throws IOException {
-        ControlMessageReader reader = new ControlMessageReader();
-
-        ByteArrayOutputStream bos = new ByteArrayOutputStream();
-        DataOutputStream dos = new DataOutputStream(bos);
-        dos.writeByte(ControlMessage.TYPE_COLLAPSE_PANELS);
-
-        byte[] packet = bos.toByteArray();
-
-        reader.readFrom(new ByteArrayInputStream(packet));
-        ControlMessage event = reader.next();
-
-        Assert.assertEquals(ControlMessage.TYPE_COLLAPSE_PANELS, event.getType());
+        Assert.assertEquals(ControlMessage.TYPE_COLLAPSE_NOTIFICATION_PANEL, event.getType());
    }

    @Test
Author	SHA1	Message	Date
Romain Vimont	e306bffbc0	Use a callback to notify a new decoded frame Make the decoder independant of the SDL event mechanism.	2021-02-14 15:31:31 +01:00
Romain Vimont	2512c53227	Improve error handling in screen initialization After the struct screen is initialized, the window and the renderer are necessarily valid, so there is no need o check in screen_destroy().	2021-02-14 14:47:49 +01:00
Romain Vimont	3cdbd00430	Handle window events only once visible This will avoid corner cases where we need to resize while no frame has been received yet.	2021-02-14 14:47:49 +01:00
Romain Vimont	93a8ef20a6	Log mipmaps error only if mipmaps are enabled	2021-02-14 14:47:49 +01:00
Romain Vimont	8c845efe9a	Make use_opengl local The flag is used only locally, there is no need to store it in the screen structure.	2021-02-14 14:47:49 +01:00
Romain Vimont	bf38331c76	Add intermediate frame in video buffer There were only two frames simultaneously: - one used by the decoder; - one used by the renderer. When the decoder finished decoding a frame, it swapped it with the rendering frame. Adding a third frame provides several benefits: - the decoder do not have to wait for the renderer to release the mutex; - it simplifies the video_buffer API; - it makes the rendering frame valid until the next call to video_buffer_take_rendering_frame(), which will be useful for swscaling on window resize.	2021-02-14 14:47:49 +01:00
Romain Vimont	7f6069213d	Assert non-recursive usage of mutexes	2021-02-14 14:47:49 +01:00
Romain Vimont	5c4462ce70	Add mutex assertions	2021-02-14 14:47:49 +01:00
Romain Vimont	c894a0b937	Expose mutex assertions Add a function to assert that the mutex is held (or not).	2021-02-14 14:47:49 +01:00
Romain Vimont	569e188254	Expose thread id	2021-02-14 14:47:49 +01:00
Romain Vimont	152fb0f915	Wrap SDL thread functions into scrcpy-specific API The goal is to expose a consistent API for system tools, and paves the way to make the "core" independant of SDL in the future.	2021-02-14 14:47:49 +01:00
Romain Vimont	de3c1a7b4c	Replace SDL_strdup() by strdup() The functions SDL_malloc(), SDL_free() and SDL_strdup() were used only because strdup() was not available everywhere. Now that it is available, use the native version of these functions.	2021-02-14 14:47:49 +01:00
Romain Vimont	e44714d2d1	Provide strdup() compat Make strdup() available on all platforms.	2021-02-14 14:47:49 +01:00