Previously, the JNI upcall would contain only the current codec config.
In the new API, the upcall contains:
1. The current codec config
2. The list of codecs containing the local codecs capabilities
3. The list of codecs containing the selectable codecs capabilities.
This list is the intersection of the local codecs capabilities
and the capabilities of the paired device.
Also, refactored the Java internals to accomodate the extra information:
* Added new class BluetoothCodecStatus that contains the extra info:
current codec config, local codecs capabilities and selectable
codecs capabilities
* Renamed method getCodecConfig() to getCodecStatus() and return the
corresponding BluetoothCodecStatus object.
* Updates to class BluetoothCodecConfig:
new methods isValid(), getCodecName(), and updated toString()
so it is more user friendly
* Removed BluetoothCodecConfig.EXTRA_CODEC_CONFIG and
EXTRA_PREVIOUS_CODEC_CONFIG.
The former is superseded by BluetoothCodecStatus.EXTRA_CODEC_STATUS;
the latter is not really used.
Test: A2DP streaming with headsets and switching the codecs
Change-Id: Ia1af2c22e521e863e28a360610aca49f7e62d31b
This change creates a new FontManagerService, in charge of providing
font management data. It exposes a public API to retrieve the
information in fonts.xml without accessing it directly. To do this,
it also refactors FontListParser's internal classes into a new public
FontConfig class holding all the font data.
getSystemFonts() returns all the available information in fonts.xml
as well as file descriptors for all the fonts. This allows us to
share the memory consumed by these files between all clients.
Bug: 34190490
Test: See attached CTS change in topic
Change-Id: I0e922f8bcc9a197a1988d04071eb485328d66fb7
Both PasswordEntryKeyboard and RotarySelector seems to have been
used by lockscreen in the past, but are no longer used.
Test: None
Change-Id: I3c1a5aaa426caf677b06a5f77ad8714aa1ad1502
* Added a new class BluetoothCodecConfig that contains codec-related
configuration or capabilities: codec type, priority, sample rate,
bits per sample, channel mode, and codec specific fields.
* Extended the Bluetooth A2DP AIDL interface to get/set the current
codec configuration
* Added new call handleBluetoothA2dpDeviceConfigChange() to the Media
Framework that is called when there are changes in the
Bluetooth A2DP device configuration - e.g., the A2DP codec is changed.
Test: A2DP streaming to headsets, TestPlans/71390
Bug: 30958229
Change-Id: I9a82716cbc2a5efbe77352a031ac80c88f6a2459
Rename ranker to assistant and make some of the methods public.
Delete the ext services ranker and restore the listener-type
lifecycle to the assistant.
Test: manual. add a notification assistant and verify it gets
assistant and listener callbacks.
Change-Id: Ia3406c8c14d923426c1b8a6d8b5187efe64c31c3
NOTE: Linear blending is currently disabled in this CL as the
feature is still a work in progress
Android currently performs all blending (any kind of linear math
on colors really) on gamma-encoded colors. Since Android assumes
that the default color space is sRGB, all bitmaps and colors
are encoded with the sRGB Opto-Electronic Conversion Function
(OECF, which can be approximated with a power function). Since
the power curve is not linear, our linear math is incorrect.
The result is that we generate colors that tend to be too dark;
this affects blending but also anti-aliasing, gradients, blurs,
etc.
The solution is to convert gamma-encoded colors back to linear
space before doing any math on them, using the sRGB Electo-Optical
Conversion Function (EOCF). This is achieved in different
ways in different parts of the pipeline:
- Using hardware conversions when sampling from OpenGL textures
or writing into OpenGL frame buffers
- Using software conversion functions, to translate app-supplied
colors to and from sRGB
- Using Skia's color spaces
Any type of processing on colors must roughly ollow these steps:
[sRGB input]->EOCF->[linear data]->[processing]->OECF->[sRGB output]
For the sRGB color space, the conversion functions are defined as
follows:
OECF(linear) :=
linear <= 0.0031308 ? linear * 12.92 : (pow(linear, 1/2.4) * 1.055) - 0.055
EOCF(srgb) :=
srgb <= 0.04045 ? srgb / 12.92 : pow((srgb + 0.055) / 1.055, 2.4)
The EOCF is simply the reciprocal of the OECF.
While it is highly recommended to use the exact sRGB conversion
functions everywhere possible, it is sometimes useful or beneficial
to rely on approximations:
- pow(x,2.2) and pow(x,1/2.2)
- x^2 and sqrt(x)
The latter is particularly useful in fragment shaders (for instance
to apply dithering in sRGB space), especially if the sqrt() can be
replaced with an inversesqrt().
Here is a fairly exhaustive list of modifications implemented
in this CL:
- Set TARGET_ENABLE_LINEAR_BLENDING := false in BoardConfig.mk
to disable linear blending. This is only for GLES 2.0 GPUs
with no hardware sRGB support. This flag is currently assumed
to be false (see note above)
- sRGB writes are disabled when entering a functor (WebView).
This will need to be fixed at some point
- Skia bitmaps are created with the sRGB color space
- Bitmaps using a 565 config are expanded to 888
- Linear blending is disabled when entering a functor
- External textures are not properly sampled (see below)
- Gradients are interpolated in linear space
- Texture-based dithering was replaced with analytical dithering
- Dithering is done in the quantization color space, which is
why we must do EOCF(OECF(color)+dither)
- Text is now gamma corrected differently depending on the luminance
of the source pixel. The asumption is that a bright pixel will be
blended on a dark background and the other way around. The source
alpha is gamma corrected to thicken dark on bright and thin
bright on dark to match the intended design of fonts. This also
matches the behavior of popular design/drawing applications
- Removed the asset atlas. It did not contain anything useful and
could not be sampled in sRGB without a yet-to-be-defined GL
extension
- The last column of color matrices is converted to linear space
because its value are added to linear colors
Missing features:
- Resource qualifier?
- Regeneration of goldeng images for automated tests
- Handle alpha8/grey8 properly
- Disable sRGB write for layers with external textures
Test: Manual testing while work in progress
Bug: 29940137
Change-Id: I6a07b15ab49b554377cd33a36b6d9971a15e9a0b
Add a compiled-classes file. This is a threshold-1 set derived
from the same source data as preloaded-classes.
As the file added in this CL has a "-phone" suffix, it will not be
automatically picked up in the build.
Bug: 28026683
Change-Id: I0318bfc83bb13342855b40d7994df951e3cad9ac
