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Diffstat (limited to '')
| -rw-r--r-- | gfx/layers/AndroidHardwareBuffer.cpp | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/gfx/layers/AndroidHardwareBuffer.cpp b/gfx/layers/AndroidHardwareBuffer.cpp new file mode 100644 index 0000000000..6c474194aa --- /dev/null +++ b/gfx/layers/AndroidHardwareBuffer.cpp @@ -0,0 +1,346 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "AndroidHardwareBuffer.h" + +#include <dlfcn.h> + +#include "mozilla/gfx/2D.h" +#include "mozilla/gfx/gfxVars.h" +#include "mozilla/layers/ImageBridgeChild.h" +#include "mozilla/layers/TextureClientSharedSurface.h" +#include "mozilla/TimeStamp.h" +#include "mozilla/UniquePtrExtensions.h" + +namespace mozilla { +namespace layers { + +static uint32_t ToAHardwareBuffer_Format(gfx::SurfaceFormat aFormat) { + switch (aFormat) { + case gfx::SurfaceFormat::R8G8B8A8: + case gfx::SurfaceFormat::B8G8R8A8: + return AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM; + + case gfx::SurfaceFormat::R8G8B8X8: + case gfx::SurfaceFormat::B8G8R8X8: + return AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM; + + case gfx::SurfaceFormat::R5G6B5_UINT16: + return AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM; + + default: + MOZ_ASSERT_UNREACHABLE("Unsupported SurfaceFormat"); + return AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM; + } +} + +StaticAutoPtr<AndroidHardwareBufferApi> AndroidHardwareBufferApi::sInstance; + +/* static */ +void AndroidHardwareBufferApi::Init() { + MOZ_ASSERT(XRE_IsGPUProcess()); + + sInstance = new AndroidHardwareBufferApi(); + if (!sInstance->Load()) { + sInstance = nullptr; + } +} + +/* static */ +void AndroidHardwareBufferApi::Shutdown() { sInstance = nullptr; } + +AndroidHardwareBufferApi::AndroidHardwareBufferApi() {} + +bool AndroidHardwareBufferApi::Load() { + void* handle = dlopen("libandroid.so", RTLD_LAZY | RTLD_LOCAL); + MOZ_ASSERT(handle); + if (!handle) { + gfxCriticalNote << "Failed to load libandroid.so"; + return false; + } + + mAHardwareBuffer_allocate = + (_AHardwareBuffer_allocate)dlsym(handle, "AHardwareBuffer_allocate"); + mAHardwareBuffer_acquire = + (_AHardwareBuffer_acquire)dlsym(handle, "AHardwareBuffer_acquire"); + mAHardwareBuffer_release = + (_AHardwareBuffer_release)dlsym(handle, "AHardwareBuffer_release"); + mAHardwareBuffer_describe = + (_AHardwareBuffer_describe)dlsym(handle, "AHardwareBuffer_describe"); + mAHardwareBuffer_lock = + (_AHardwareBuffer_lock)dlsym(handle, "AHardwareBuffer_lock"); + mAHardwareBuffer_unlock = + (_AHardwareBuffer_unlock)dlsym(handle, "AHardwareBuffer_unlock"); + mAHardwareBuffer_sendHandleToUnixSocket = + (_AHardwareBuffer_sendHandleToUnixSocket)dlsym( + handle, "AHardwareBuffer_sendHandleToUnixSocket"); + mAHardwareBuffer_recvHandleFromUnixSocket = + (_AHardwareBuffer_recvHandleFromUnixSocket)dlsym( + handle, "AHardwareBuffer_recvHandleFromUnixSocket"); + + if (!mAHardwareBuffer_allocate || !mAHardwareBuffer_acquire || + !mAHardwareBuffer_release || !mAHardwareBuffer_describe || + !mAHardwareBuffer_lock || !mAHardwareBuffer_unlock || + !mAHardwareBuffer_sendHandleToUnixSocket || + !mAHardwareBuffer_recvHandleFromUnixSocket) { + gfxCriticalNote << "Failed to load AHardwareBuffer"; + return false; + } + return true; +} + +void AndroidHardwareBufferApi::Allocate(const AHardwareBuffer_Desc* aDesc, + AHardwareBuffer** aOutBuffer) { + mAHardwareBuffer_allocate(aDesc, aOutBuffer); +} + +void AndroidHardwareBufferApi::Acquire(AHardwareBuffer* aBuffer) { + mAHardwareBuffer_acquire(aBuffer); +} + +void AndroidHardwareBufferApi::Release(AHardwareBuffer* aBuffer) { + mAHardwareBuffer_release(aBuffer); +} + +void AndroidHardwareBufferApi::Describe(const AHardwareBuffer* aBuffer, + AHardwareBuffer_Desc* aOutDesc) { + mAHardwareBuffer_describe(aBuffer, aOutDesc); +} + +int AndroidHardwareBufferApi::Lock(AHardwareBuffer* aBuffer, uint64_t aUsage, + int32_t aFence, const ARect* aRect, + void** aOutVirtualAddress) { + return mAHardwareBuffer_lock(aBuffer, aUsage, aFence, aRect, + aOutVirtualAddress); +} + +int AndroidHardwareBufferApi::Unlock(AHardwareBuffer* aBuffer, + int32_t* aFence) { + return mAHardwareBuffer_unlock(aBuffer, aFence); +} + +int AndroidHardwareBufferApi::SendHandleToUnixSocket( + const AHardwareBuffer* aBuffer, int aSocketFd) { + return mAHardwareBuffer_sendHandleToUnixSocket(aBuffer, aSocketFd); +} + +int AndroidHardwareBufferApi::RecvHandleFromUnixSocket( + int aSocketFd, AHardwareBuffer** aOutBuffer) { + return mAHardwareBuffer_recvHandleFromUnixSocket(aSocketFd, aOutBuffer); +} + +/* static */ +uint64_t AndroidHardwareBuffer::GetNextId() { + static std::atomic<uint64_t> sNextId = 0; + uint64_t id = ++sNextId; + return id; +} + +/* static */ +already_AddRefed<AndroidHardwareBuffer> AndroidHardwareBuffer::Create( + gfx::IntSize aSize, gfx::SurfaceFormat aFormat) { + if (!AndroidHardwareBufferApi::Get()) { + return nullptr; + } + + if (aFormat != gfx::SurfaceFormat::R8G8B8A8 && + aFormat != gfx::SurfaceFormat::R8G8B8X8 && + aFormat != gfx::SurfaceFormat::B8G8R8A8 && + aFormat != gfx::SurfaceFormat::B8G8R8X8 && + aFormat != gfx::SurfaceFormat::R5G6B5_UINT16) { + return nullptr; + } + + AHardwareBuffer_Desc desc = {}; + desc.width = aSize.width; + desc.height = aSize.height; + desc.layers = 1; // number of images + desc.usage = AHARDWAREBUFFER_USAGE_CPU_READ_OFTEN | + AHARDWAREBUFFER_USAGE_CPU_WRITE_OFTEN | + AHARDWAREBUFFER_USAGE_GPU_SAMPLED_IMAGE | + AHARDWAREBUFFER_USAGE_GPU_COLOR_OUTPUT; + desc.format = ToAHardwareBuffer_Format(aFormat); + + AHardwareBuffer* nativeBuffer = nullptr; + AndroidHardwareBufferApi::Get()->Allocate(&desc, &nativeBuffer); + if (!nativeBuffer) { + return nullptr; + } + + AHardwareBuffer_Desc bufferInfo = {}; + AndroidHardwareBufferApi::Get()->Describe(nativeBuffer, &bufferInfo); + + RefPtr<AndroidHardwareBuffer> buffer = new AndroidHardwareBuffer( + nativeBuffer, aSize, bufferInfo.stride, aFormat, GetNextId()); + AndroidHardwareBufferManager::Get()->Register(buffer); + return buffer.forget(); +} + +AndroidHardwareBuffer::AndroidHardwareBuffer(AHardwareBuffer* aNativeBuffer, + gfx::IntSize aSize, + uint32_t aStride, + gfx::SurfaceFormat aFormat, + uint64_t aId) + : mSize(aSize), + mStride(aStride), + mFormat(aFormat), + mId(aId), + mNativeBuffer(aNativeBuffer), + mIsRegistered(false) { + MOZ_ASSERT(mNativeBuffer); +#ifdef DEBUG + AHardwareBuffer_Desc bufferInfo = {}; + AndroidHardwareBufferApi::Get()->Describe(mNativeBuffer, &bufferInfo); + MOZ_ASSERT(mSize.width == (int32_t)bufferInfo.width); + MOZ_ASSERT(mSize.height == (int32_t)bufferInfo.height); + MOZ_ASSERT(mStride == bufferInfo.stride); + MOZ_ASSERT(ToAHardwareBuffer_Format(mFormat) == bufferInfo.format); +#endif +} + +AndroidHardwareBuffer::~AndroidHardwareBuffer() { + if (mIsRegistered) { + AndroidHardwareBufferManager::Get()->Unregister(this); + } + AndroidHardwareBufferApi::Get()->Release(mNativeBuffer); +} + +int AndroidHardwareBuffer::Lock(uint64_t aUsage, const ARect* aRect, + void** aOutVirtualAddress) { + ipc::FileDescriptor fd = GetAndResetReleaseFence(); + int32_t fenceFd = -1; + ipc::FileDescriptor::UniquePlatformHandle rawFd; + if (fd.IsValid()) { + rawFd = fd.TakePlatformHandle(); + fenceFd = rawFd.get(); + } + return AndroidHardwareBufferApi::Get()->Lock(mNativeBuffer, aUsage, fenceFd, + aRect, aOutVirtualAddress); +} + +int AndroidHardwareBuffer::Unlock() { + int rawFd = -1; + // XXX All tested recent Android devices did not return valid fence. + int ret = AndroidHardwareBufferApi::Get()->Unlock(mNativeBuffer, &rawFd); + if (ret != 0) { + return ret; + } + + ipc::FileDescriptor acquireFenceFd; + // The value -1 indicates that unlocking has already completed before + // the function returned and no further operations are necessary. + if (rawFd >= 0) { + acquireFenceFd = ipc::FileDescriptor(UniqueFileHandle(rawFd)); + } + + if (acquireFenceFd.IsValid()) { + SetAcquireFence(std::move(acquireFenceFd)); + } + return 0; +} + +void AndroidHardwareBuffer::SetReleaseFence(ipc::FileDescriptor&& aFenceFd) { + MonitorAutoLock lock(AndroidHardwareBufferManager::Get()->GetMonitor()); + SetReleaseFence(std::move(aFenceFd), lock); +} + +void AndroidHardwareBuffer::SetReleaseFence(ipc::FileDescriptor&& aFenceFd, + const MonitorAutoLock& aAutoLock) { + mReleaseFenceFd = std::move(aFenceFd); +} + +void AndroidHardwareBuffer::SetAcquireFence(ipc::FileDescriptor&& aFenceFd) { + MonitorAutoLock lock(AndroidHardwareBufferManager::Get()->GetMonitor()); + + mAcquireFenceFd = std::move(aFenceFd); +} + +ipc::FileDescriptor AndroidHardwareBuffer::GetAndResetReleaseFence() { + MonitorAutoLock lock(AndroidHardwareBufferManager::Get()->GetMonitor()); + + if (!mReleaseFenceFd.IsValid()) { + return ipc::FileDescriptor(); + } + + return std::move(mReleaseFenceFd); +} + +ipc::FileDescriptor AndroidHardwareBuffer::GetAndResetAcquireFence() { + MonitorAutoLock lock(AndroidHardwareBufferManager::Get()->GetMonitor()); + + if (!mAcquireFenceFd.IsValid()) { + return ipc::FileDescriptor(); + } + + return std::move(mAcquireFenceFd); +} + +ipc::FileDescriptor AndroidHardwareBuffer::GetAcquireFence() { + MonitorAutoLock lock(AndroidHardwareBufferManager::Get()->GetMonitor()); + + if (!mAcquireFenceFd.IsValid()) { + return ipc::FileDescriptor(); + } + + return mAcquireFenceFd; +} + +StaticAutoPtr<AndroidHardwareBufferManager> + AndroidHardwareBufferManager::sInstance; + +/* static */ +void AndroidHardwareBufferManager::Init() { + MOZ_ASSERT(XRE_IsGPUProcess()); + + sInstance = new AndroidHardwareBufferManager(); +} + +/* static */ +void AndroidHardwareBufferManager::Shutdown() { sInstance = nullptr; } + +AndroidHardwareBufferManager::AndroidHardwareBufferManager() + : mMonitor("AndroidHardwareBufferManager.mMonitor") {} + +void AndroidHardwareBufferManager::Register( + RefPtr<AndroidHardwareBuffer> aBuffer) { + MonitorAutoLock lock(mMonitor); + + aBuffer->mIsRegistered = true; + ThreadSafeWeakPtr<AndroidHardwareBuffer> weak(aBuffer); + +#ifdef DEBUG + const auto it = mBuffers.find(aBuffer->mId); + MOZ_ASSERT(it == mBuffers.end()); +#endif + mBuffers.emplace(aBuffer->mId, weak); +} + +void AndroidHardwareBufferManager::Unregister(AndroidHardwareBuffer* aBuffer) { + MonitorAutoLock lock(mMonitor); + + const auto it = mBuffers.find(aBuffer->mId); + MOZ_ASSERT(it != mBuffers.end()); + if (it == mBuffers.end()) { + gfxCriticalNote << "AndroidHardwareBuffer id mismatch happened"; + return; + } + mBuffers.erase(it); +} + +already_AddRefed<AndroidHardwareBuffer> AndroidHardwareBufferManager::GetBuffer( + uint64_t aBufferId) { + MonitorAutoLock lock(mMonitor); + + const auto it = mBuffers.find(aBufferId); + if (it == mBuffers.end()) { + return nullptr; + } + auto buffer = RefPtr<AndroidHardwareBuffer>(it->second); + return buffer.forget(); +} + +} // namespace layers +} // namespace mozilla |