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android_frameworks_base/libs/hwui/HardwareBitmapUploader.cpp

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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "HardwareBitmapUploader.h"
#include "hwui/Bitmap.h"
#include "renderthread/EglManager.h"
#include "thread/ThreadBase.h"
#include "utils/TimeUtils.h"
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <GLES3/gl3.h>
#include <SkCanvas.h>
#include <utils/GLUtils.h>
#include <utils/Trace.h>
#include <utils/TraceUtils.h>
#include <thread>
namespace android::uirenderer {
static std::mutex sLock{};
static ThreadBase* sUploadThread = nullptr;
static renderthread::EglManager sEglManager;
static int sPendingUploads = 0;
static nsecs_t sLastUpload = 0;
static bool shouldTimeOutLocked() {
nsecs_t durationSince = systemTime() - sLastUpload;
return durationSince > 2000_ms;
}
static void checkIdleTimeout() {
std::lock_guard _lock{sLock};
if (sPendingUploads == 0 && shouldTimeOutLocked()) {
sEglManager.destroy();
} else {
sUploadThread->queue().postDelayed(5000_ms, checkIdleTimeout);
}
}
static void beginUpload() {
std::lock_guard _lock{sLock};
sPendingUploads++;
if (!sUploadThread) {
sUploadThread = new ThreadBase{};
}
if (!sUploadThread->isRunning()) {
sUploadThread->start("GrallocUploadThread");
}
if (!sEglManager.hasEglContext()) {
sUploadThread->queue().runSync([]() {
sEglManager.initialize();
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
});
sUploadThread->queue().postDelayed(5000_ms, checkIdleTimeout);
}
}
static void endUpload() {
std::lock_guard _lock{sLock};
sPendingUploads--;
sLastUpload = systemTime();
}
static EGLDisplay getUploadEglDisplay() {
std::lock_guard _lock{sLock};
LOG_ALWAYS_FATAL_IF(!sEglManager.hasEglContext(), "Forgot to begin an upload?");
return sEglManager.eglDisplay();
}
static bool hasFP16Support() {
static std::once_flag sOnce;
static bool hasFP16Support = false;
// Gralloc shouldn't let us create a USAGE_HW_TEXTURE if GLES is unable to consume it, so
// we don't need to double-check the GLES version/extension.
std::call_once(sOnce, []() {
sp<GraphicBuffer> buffer = new GraphicBuffer(1, 1, PIXEL_FORMAT_RGBA_FP16,
GraphicBuffer::USAGE_HW_TEXTURE |
GraphicBuffer::USAGE_SW_WRITE_NEVER |
GraphicBuffer::USAGE_SW_READ_NEVER,
"tempFp16Buffer");
status_t error = buffer->initCheck();
hasFP16Support = !error;
});
return hasFP16Support;
}
#define FENCE_TIMEOUT 2000000000
struct FormatInfo {
PixelFormat pixelFormat;
GLint format, type;
bool isSupported = false;
bool valid = true;
};
static FormatInfo determineFormat(const SkBitmap& skBitmap) {
FormatInfo formatInfo;
// TODO: add support for linear blending (when ANDROID_ENABLE_LINEAR_BLENDING is defined)
switch (skBitmap.info().colorType()) {
case kRGBA_8888_SkColorType:
formatInfo.isSupported = true;
// ARGB_4444 is upconverted to RGBA_8888
case kARGB_4444_SkColorType:
formatInfo.pixelFormat = PIXEL_FORMAT_RGBA_8888;
formatInfo.format = GL_RGBA;
formatInfo.type = GL_UNSIGNED_BYTE;
break;
case kRGBA_F16_SkColorType:
formatInfo.isSupported = hasFP16Support();
if (formatInfo.isSupported) {
formatInfo.type = GL_HALF_FLOAT;
formatInfo.pixelFormat = PIXEL_FORMAT_RGBA_FP16;
} else {
formatInfo.type = GL_UNSIGNED_BYTE;
formatInfo.pixelFormat = PIXEL_FORMAT_RGBA_8888;
}
formatInfo.format = GL_RGBA;
break;
case kRGB_565_SkColorType:
formatInfo.isSupported = true;
formatInfo.pixelFormat = PIXEL_FORMAT_RGB_565;
formatInfo.format = GL_RGB;
formatInfo.type = GL_UNSIGNED_SHORT_5_6_5;
break;
case kGray_8_SkColorType:
formatInfo.isSupported = true;
formatInfo.pixelFormat = PIXEL_FORMAT_RGBA_8888;
formatInfo.format = GL_LUMINANCE;
formatInfo.type = GL_UNSIGNED_BYTE;
break;
default:
ALOGW("unable to create hardware bitmap of colortype: %d", skBitmap.info().colorType());
formatInfo.valid = false;
}
return formatInfo;
}
static SkBitmap makeHwCompatible(const FormatInfo& format, const SkBitmap& source) {
if (format.isSupported) {
return source;
} else {
SkBitmap bitmap;
const SkImageInfo& info = source.info();
bitmap.allocPixels(
SkImageInfo::MakeN32(info.width(), info.height(), info.alphaType(), nullptr));
bitmap.eraseColor(0);
if (info.colorType() == kRGBA_F16_SkColorType) {
// Drawing RGBA_F16 onto ARGB_8888 is not supported
source.readPixels(bitmap.info().makeColorSpace(SkColorSpace::MakeSRGB()),
bitmap.getPixels(), bitmap.rowBytes(), 0, 0);
} else {
SkCanvas canvas(bitmap);
canvas.drawBitmap(source, 0.0f, 0.0f, nullptr);
}
return bitmap;
}
}
class ScopedUploadRequest {
public:
ScopedUploadRequest() { beginUpload(); }
~ScopedUploadRequest() { endUpload(); }
};
sk_sp<Bitmap> HardwareBitmapUploader::allocateHardwareBitmap(const SkBitmap& sourceBitmap) {
ATRACE_CALL();
FormatInfo format = determineFormat(sourceBitmap);
if (!format.valid) {
return nullptr;
}
ScopedUploadRequest _uploadRequest{};
SkBitmap bitmap = makeHwCompatible(format, sourceBitmap);
sp<GraphicBuffer> buffer = new GraphicBuffer(
static_cast<uint32_t>(bitmap.width()), static_cast<uint32_t>(bitmap.height()),
format.pixelFormat,
GraphicBuffer::USAGE_HW_TEXTURE | GraphicBuffer::USAGE_SW_WRITE_NEVER |
GraphicBuffer::USAGE_SW_READ_NEVER,
std::string("Bitmap::allocateSkiaHardwareBitmap pid [") + std::to_string(getpid()) +
"]");
status_t error = buffer->initCheck();
if (error < 0) {
ALOGW("createGraphicBuffer() failed in GraphicBuffer.create()");
return nullptr;
}
EGLDisplay display = getUploadEglDisplay();
LOG_ALWAYS_FATAL_IF(display == EGL_NO_DISPLAY, "Failed to get EGL_DEFAULT_DISPLAY! err=%s",
uirenderer::renderthread::EglManager::eglErrorString());
// We use an EGLImage to access the content of the GraphicBuffer
// The EGL image is later bound to a 2D texture
EGLClientBuffer clientBuffer = (EGLClientBuffer)buffer->getNativeBuffer();
AutoEglImage autoImage(display, clientBuffer);
if (autoImage.image == EGL_NO_IMAGE_KHR) {
ALOGW("Could not create EGL image, err =%s",
uirenderer::renderthread::EglManager::eglErrorString());
return nullptr;
}
{
ATRACE_FORMAT("CPU -> gralloc transfer (%dx%d)", bitmap.width(), bitmap.height());
EGLSyncKHR fence = sUploadThread->queue().runSync([&]() -> EGLSyncKHR {
AutoSkiaGlTexture glTexture;
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, autoImage.image);
GL_CHECKPOINT(MODERATE);
// glTexSubImage2D is synchronous in sense that it memcpy() from pointer that we
// provide.
// But asynchronous in sense that driver may upload texture onto hardware buffer when we
// first
// use it in drawing
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, bitmap.width(), bitmap.height(), format.format,
format.type, bitmap.getPixels());
GL_CHECKPOINT(MODERATE);
EGLSyncKHR uploadFence =
eglCreateSyncKHR(eglGetCurrentDisplay(), EGL_SYNC_FENCE_KHR, NULL);
LOG_ALWAYS_FATAL_IF(uploadFence == EGL_NO_SYNC_KHR, "Could not create sync fence %#x",
eglGetError());
glFlush();
return uploadFence;
});
EGLint waitStatus = eglClientWaitSyncKHR(display, fence, 0, FENCE_TIMEOUT);
LOG_ALWAYS_FATAL_IF(waitStatus != EGL_CONDITION_SATISFIED_KHR,
"Failed to wait for the fence %#x", eglGetError());
eglDestroySyncKHR(display, fence);
}
return sk_sp<Bitmap>(new Bitmap(buffer.get(), bitmap.info(), Bitmap::computePalette(bitmap)));
}
}; // namespace android::uirenderer
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