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/* -*- 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 "SharedPlanarYCbCrImage.h"
#include <stddef.h> // for size_t
#include <stdio.h> // for printf
#include "gfx2DGlue.h" // for Moz2D transition helpers
#include "ISurfaceAllocator.h" // for ISurfaceAllocator, etc
#include "mozilla/Assertions.h" // for MOZ_ASSERT, etc
#include "mozilla/gfx/Types.h" // for SurfaceFormat::SurfaceFormat::YUV
#include "mozilla/ipc/SharedMemory.h" // for SharedMemory, etc
#include "mozilla/layers/ImageClient.h" // for ImageClient
#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor, etc
#include "mozilla/layers/TextureClient.h"
#include "mozilla/layers/TextureClientRecycleAllocator.h"
#include "mozilla/layers/BufferTexture.h"
#include "mozilla/layers/ImageDataSerializer.h"
#include "mozilla/layers/ImageBridgeChild.h" // for ImageBridgeChild
#include "mozilla/mozalloc.h" // for operator delete
#include "nsISupportsImpl.h" // for Image::AddRef
#include "mozilla/ipc/Shmem.h"
namespace mozilla {
namespace layers {
using namespace mozilla::ipc;
SharedPlanarYCbCrImage::SharedPlanarYCbCrImage(ImageClient* aCompositable)
: mCompositable(aCompositable) {
MOZ_COUNT_CTOR(SharedPlanarYCbCrImage);
}
SharedPlanarYCbCrImage::SharedPlanarYCbCrImage(
TextureClientRecycleAllocator* aRecycleAllocator)
: mRecycleAllocator(aRecycleAllocator) {
MOZ_COUNT_CTOR(SharedPlanarYCbCrImage);
}
SharedPlanarYCbCrImage::~SharedPlanarYCbCrImage() {
MOZ_COUNT_DTOR(SharedPlanarYCbCrImage);
}
TextureClientRecycleAllocator* SharedPlanarYCbCrImage::RecycleAllocator() {
static const uint32_t MAX_POOLED_VIDEO_COUNT = 5;
if (!mRecycleAllocator && mCompositable) {
if (!mCompositable->HasTextureClientRecycler()) {
// Initialize TextureClientRecycler
mCompositable->GetTextureClientRecycler()->SetMaxPoolSize(
MAX_POOLED_VIDEO_COUNT);
}
mRecycleAllocator = mCompositable->GetTextureClientRecycler();
}
return mRecycleAllocator;
}
size_t SharedPlanarYCbCrImage::SizeOfExcludingThis(
MallocSizeOf aMallocSizeOf) const {
// NB: Explicitly skipping mTextureClient, the memory is already reported
// at time of allocation in GfxMemoryImageReporter.
// Not owned:
// - mCompositable
return 0;
}
TextureClient* SharedPlanarYCbCrImage::GetTextureClient(
KnowsCompositor* aKnowsCompositor) {
return mTextureClient.get();
}
already_AddRefed<gfx::SourceSurface>
SharedPlanarYCbCrImage::GetAsSourceSurface() {
if (!IsValid()) {
NS_WARNING("Can't get as surface");
return nullptr;
}
return PlanarYCbCrImage::GetAsSourceSurface();
}
bool SharedPlanarYCbCrImage::CopyData(const PlanarYCbCrData& aData) {
// If mTextureClient has not already been allocated by CreateEmptyBuffer,
// allocate it. This code path is slower than the one used when
// CreateEmptyBuffer has been called since it will trigger a full copy.
if (!mTextureClient &&
!CreateEmptyBuffer(aData, aData.YDataSize(), aData.CbCrDataSize())) {
return false;
}
TextureClientAutoLock autoLock(mTextureClient, OpenMode::OPEN_WRITE_ONLY);
if (!autoLock.Succeeded()) {
MOZ_ASSERT(false, "Failed to lock the texture.");
return false;
}
if (!UpdateYCbCrTextureClient(mTextureClient, aData)) {
MOZ_ASSERT(false, "Failed to copy YCbCr data into the TextureClient");
return false;
}
mTextureClient->MarkImmutable();
return true;
}
bool SharedPlanarYCbCrImage::AdoptData(const Data& aData) {
MOZ_ASSERT(false, "This shouldn't be used.");
return false;
}
bool SharedPlanarYCbCrImage::IsValid() const {
return mTextureClient && mTextureClient->IsValid();
}
bool SharedPlanarYCbCrImage::CreateEmptyBuffer(const PlanarYCbCrData& aData,
const gfx::IntSize& aYSize,
const gfx::IntSize& aCbCrSize) {
MOZ_ASSERT(!mTextureClient, "This image already has allocated data");
TextureFlags flags =
mCompositable ? mCompositable->GetTextureFlags() : TextureFlags::DEFAULT;
{
YCbCrTextureClientAllocationHelper helper(aData, aYSize, aCbCrSize, flags);
mTextureClient = RecycleAllocator()->CreateOrRecycle(helper);
}
if (!mTextureClient) {
NS_WARNING("SharedPlanarYCbCrImage::Allocate failed.");
return false;
}
MappedYCbCrTextureData mapped;
// The locking here is sort of a lie. The SharedPlanarYCbCrImage just pulls
// pointers out of the TextureClient and keeps them around, which works only
// because the underlyin BufferTextureData is always mapped in memory even
// outside of the lock/unlock interval. That's sad and new code should follow
// this example.
if (!mTextureClient->Lock(OpenMode::OPEN_READ) ||
!mTextureClient->BorrowMappedYCbCrData(mapped)) {
MOZ_CRASH("GFX: Cannot lock or borrow mapped YCbCr");
}
// copy some of aData's values in mData (most of them)
mData.mYChannel = mapped.y.data;
mData.mCbChannel = mapped.cb.data;
mData.mCrChannel = mapped.cr.data;
mData.mPictureRect = aData.mPictureRect;
mData.mStereoMode = aData.mStereoMode;
mData.mYUVColorSpace = aData.mYUVColorSpace;
mData.mColorDepth = aData.mColorDepth;
mData.mChromaSubsampling = aData.mChromaSubsampling;
// those members are not always equal to aData's, due to potentially different
// packing.
mData.mYSkip = 0;
mData.mCbSkip = 0;
mData.mCrSkip = 0;
mData.mYStride = aData.mYStride;
mData.mCbCrStride = aData.mCbCrStride;
// do not set mBuffer like in PlanarYCbCrImage because the later
// will try to manage this memory without knowing it belongs to a
// shmem.
mBufferSize = ImageDataSerializer::ComputeYCbCrBufferSize(
aYSize, mData.mYStride, aCbCrSize, mData.mCbCrStride);
mSize = mData.mPictureRect.Size();
mOrigin = mData.mPictureRect.TopLeft();
mTextureClient->Unlock();
return mBufferSize > 0;
}
} // namespace layers
} // namespace mozilla
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