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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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() {
MOZ_COUNT_DTOR(SharedPlanarYCbCrImage);
if (mCompositable->GetAsyncID() != 0 &&
!InImageBridgeChildThread()) {
if (mTextureClient) {
ADDREF_MANUALLY(mTextureClient);
ImageBridgeChild::DispatchReleaseTextureClient(mTextureClient);
mTextureClient = nullptr;
}
}
}
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* aForwarder)
{
return mTextureClient.get();
}
uint8_t*
SharedPlanarYCbCrImage::GetBuffer()
{
// This should never be used
MOZ_ASSERT(false);
return nullptr;
}
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 (through Allocate(aData))
// allocate it. This code path is slower than the one used when Allocate has
// been called since it will trigger a full copy.
PlanarYCbCrData data = aData;
if (!mTextureClient && !Allocate(data)) {
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;
}
// needs to be overriden because the parent class sets mBuffer which we
// do not want to happen.
uint8_t*
SharedPlanarYCbCrImage::AllocateAndGetNewBuffer(uint32_t aSize)
{
MOZ_ASSERT(!mTextureClient, "This image already has allocated data");
size_t size = ImageDataSerializer::ComputeYCbCrBufferSize(aSize);
if (!size) {
return nullptr;
}
// XXX Add YUVColorSpace handling. Use YUVColorSpace::BT601 for now.
mTextureClient = TextureClient::CreateForYCbCrWithBufferSize(mCompositable->GetForwarder(),
size,
YUVColorSpace::BT601,
mCompositable->GetTextureFlags());
// get new buffer _without_ setting mBuffer.
if (!mTextureClient) {
return nullptr;
}
// update buffer size
mBufferSize = size;
MappedYCbCrTextureData mapped;
if (mTextureClient->BorrowMappedYCbCrData(mapped)) {
// The caller expects a pointer to the beginning of the writable part of the
// buffer which is where the y channel starts by default.
return mapped.y.data;
} else {
MOZ_CRASH("GFX: Cannot borrow mapped YCbCr data");
}
}
bool
SharedPlanarYCbCrImage::AdoptData(const Data &aData)
{
// AdoptData is used to update YUV plane offsets without (re)allocating
// memory previously allocated with AllocateAndGetNewBuffer().
MOZ_ASSERT(mTextureClient, "This Image should have already allocated data");
if (!mTextureClient) {
return false;
}
mData = aData;
mSize = aData.mPicSize;
mOrigin = gfx::IntPoint(aData.mPicX, aData.mPicY);
uint8_t *base = GetBuffer();
uint32_t yOffset = aData.mYChannel - base;
uint32_t cbOffset = aData.mCbChannel - base;
uint32_t crOffset = aData.mCrChannel - base;
auto fwd = mCompositable->GetForwarder();
bool hasIntermediateBuffer = ComputeHasIntermediateBuffer(gfx::SurfaceFormat::YUV,
fwd->GetCompositorBackendType());
static_cast<BufferTextureData*>(mTextureClient->GetInternalData())->SetDesciptor(
YCbCrDescriptor(aData.mYSize, aData.mCbCrSize, yOffset, cbOffset, crOffset,
aData.mStereoMode, aData.mYUVColorSpace, hasIntermediateBuffer)
);
return true;
}
bool
SharedPlanarYCbCrImage::IsValid() {
return mTextureClient && mTextureClient->IsValid();
}
bool
SharedPlanarYCbCrImage::Allocate(PlanarYCbCrData& aData)
{
MOZ_ASSERT(!mTextureClient,
"This image already has allocated data");
static const uint32_t MAX_POOLED_VIDEO_COUNT = 5;
if (!mCompositable->HasTextureClientRecycler()) {
// Initialize TextureClientRecycler
mCompositable->GetTextureClientRecycler()->SetMaxPoolSize(MAX_POOLED_VIDEO_COUNT);
}
{
YCbCrTextureClientAllocationHelper helper(aData, mCompositable->GetTextureFlags());
mTextureClient = mCompositable->GetTextureClientRecycler()->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");
}
aData.mYChannel = mapped.y.data;
aData.mCbChannel = mapped.cb.data;
aData.mCrChannel = mapped.cr.data;
// copy some of aData's values in mData (most of them)
mData.mYChannel = aData.mYChannel;
mData.mCbChannel = aData.mCbChannel;
mData.mCrChannel = aData.mCrChannel;
mData.mYSize = aData.mYSize;
mData.mCbCrSize = aData.mCbCrSize;
mData.mPicX = aData.mPicX;
mData.mPicY = aData.mPicY;
mData.mPicSize = aData.mPicSize;
mData.mStereoMode = aData.mStereoMode;
mData.mYUVColorSpace = aData.mYUVColorSpace;
// 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 = mData.mYSize.width;
mData.mCbCrStride = mData.mCbCrSize.width;
// 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(mData.mYSize, mData.mCbCrSize);
mSize = mData.mPicSize;
mOrigin = gfx::IntPoint(aData.mPicX, aData.mPicY);
mTextureClient->Unlock();
return mBufferSize > 0;
}
} // namespace layers
} // namespace mozilla
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