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-rw-r--r--gfx/layers/BufferTexture.cpp535
1 files changed, 535 insertions, 0 deletions
diff --git a/gfx/layers/BufferTexture.cpp b/gfx/layers/BufferTexture.cpp
new file mode 100644
index 0000000000..61d63874dc
--- /dev/null
+++ b/gfx/layers/BufferTexture.cpp
@@ -0,0 +1,535 @@
+/* -*- 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 "BufferTexture.h"
+
+#include <utility>
+
+#include "libyuv.h"
+#include "mozilla/fallible.h"
+#include "mozilla/gfx/2D.h"
+#include "mozilla/gfx/Logging.h"
+#include "mozilla/layers/CompositableForwarder.h"
+#include "mozilla/layers/ISurfaceAllocator.h"
+#include "mozilla/layers/ImageDataSerializer.h"
+#include "mozilla/layers/TextureForwarder.h"
+
+#include "gfxPlatform.h"
+
+#ifdef MOZ_WIDGET_GTK
+# include "gfxPlatformGtk.h"
+#endif
+
+using mozilla::ipc::IShmemAllocator;
+
+namespace mozilla {
+namespace layers {
+
+class MemoryTextureData : public BufferTextureData {
+ public:
+ static MemoryTextureData* Create(gfx::IntSize aSize,
+ gfx::SurfaceFormat aFormat,
+ gfx::BackendType aMoz2DBackend,
+ LayersBackend aLayersBackend,
+ TextureFlags aFlags,
+ TextureAllocationFlags aAllocFlags,
+ IShmemAllocator* aAllocator);
+
+ virtual TextureData* CreateSimilar(
+ LayersIPCChannel* aAllocator, LayersBackend aLayersBackend,
+ TextureFlags aFlags = TextureFlags::DEFAULT,
+ TextureAllocationFlags aAllocFlags = ALLOC_DEFAULT) const override;
+
+ virtual bool Serialize(SurfaceDescriptor& aOutDescriptor) override;
+
+ virtual void Deallocate(LayersIPCChannel*) override;
+
+ MemoryTextureData(const BufferDescriptor& aDesc,
+ gfx::BackendType aMoz2DBackend, uint8_t* aBuffer,
+ size_t aBufferSize, bool aAutoDeallocate = false)
+ : BufferTextureData(aDesc, aMoz2DBackend),
+ mBuffer(aBuffer),
+ mBufferSize(aBufferSize),
+ mAutoDeallocate(aAutoDeallocate) {
+ MOZ_ASSERT(aBuffer);
+ MOZ_ASSERT(aBufferSize);
+ }
+
+ virtual ~MemoryTextureData() override {
+ if (mAutoDeallocate) {
+ Deallocate(nullptr);
+ }
+ }
+
+ virtual uint8_t* GetBuffer() override { return mBuffer; }
+
+ virtual size_t GetBufferSize() override { return mBufferSize; }
+
+ TextureType GetTextureType() const override { return TextureType::Unknown; }
+
+ protected:
+ uint8_t* mBuffer;
+ size_t mBufferSize;
+ bool mAutoDeallocate;
+};
+
+class ShmemTextureData : public BufferTextureData {
+ public:
+ static ShmemTextureData* Create(gfx::IntSize aSize,
+ gfx::SurfaceFormat aFormat,
+ gfx::BackendType aMoz2DBackend,
+ LayersBackend aLayersBackend,
+ TextureFlags aFlags,
+ TextureAllocationFlags aAllocFlags,
+ IShmemAllocator* aAllocator);
+
+ virtual TextureData* CreateSimilar(
+ LayersIPCChannel* aAllocator, LayersBackend aLayersBackend,
+ TextureFlags aFlags = TextureFlags::DEFAULT,
+ TextureAllocationFlags aAllocFlags = ALLOC_DEFAULT) const override;
+
+ virtual bool Serialize(SurfaceDescriptor& aOutDescriptor) override;
+
+ virtual void Deallocate(LayersIPCChannel* aAllocator) override;
+
+ ShmemTextureData(const BufferDescriptor& aDesc,
+ gfx::BackendType aMoz2DBackend, mozilla::ipc::Shmem aShmem)
+ : BufferTextureData(aDesc, aMoz2DBackend), mShmem(aShmem) {
+ MOZ_ASSERT(mShmem.Size<uint8_t>());
+ }
+
+ virtual uint8_t* GetBuffer() override { return mShmem.get<uint8_t>(); }
+
+ virtual size_t GetBufferSize() override { return mShmem.Size<uint8_t>(); }
+
+ protected:
+ mozilla::ipc::Shmem mShmem;
+};
+
+BufferTextureData* BufferTextureData::Create(
+ gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
+ gfx::BackendType aMoz2DBackend, LayersBackend aLayersBackend,
+ TextureFlags aFlags, TextureAllocationFlags aAllocFlags,
+ mozilla::ipc::IShmemAllocator* aAllocator, bool aIsSameProcess) {
+ if (!aAllocator || aIsSameProcess) {
+ return MemoryTextureData::Create(aSize, aFormat, aMoz2DBackend,
+ aLayersBackend, aFlags, aAllocFlags,
+ aAllocator);
+ } else {
+ return ShmemTextureData::Create(aSize, aFormat, aMoz2DBackend,
+ aLayersBackend, aFlags, aAllocFlags,
+ aAllocator);
+ }
+}
+
+BufferTextureData* BufferTextureData::CreateInternal(
+ LayersIPCChannel* aAllocator, const BufferDescriptor& aDesc,
+ gfx::BackendType aMoz2DBackend, int32_t aBufferSize,
+ TextureFlags aTextureFlags) {
+ if (!aAllocator || aAllocator->IsSameProcess()) {
+ uint8_t* buffer = new (fallible) uint8_t[aBufferSize];
+ if (!buffer) {
+ return nullptr;
+ }
+
+ GfxMemoryImageReporter::DidAlloc(buffer);
+
+ return new MemoryTextureData(aDesc, aMoz2DBackend, buffer, aBufferSize);
+ } else {
+ ipc::Shmem shm;
+ if (!aAllocator->AllocUnsafeShmem(aBufferSize, &shm)) {
+ return nullptr;
+ }
+
+ return new ShmemTextureData(aDesc, aMoz2DBackend, shm);
+ }
+}
+
+BufferTextureData* BufferTextureData::CreateForYCbCr(
+ KnowsCompositor* aAllocator, const gfx::IntRect& aDisplay,
+ const gfx::IntSize& aYSize, uint32_t aYStride,
+ const gfx::IntSize& aCbCrSize, uint32_t aCbCrStride, StereoMode aStereoMode,
+ gfx::ColorDepth aColorDepth, gfx::YUVColorSpace aYUVColorSpace,
+ gfx::ColorRange aColorRange, gfx::ChromaSubsampling aSubsampling,
+ TextureFlags aTextureFlags) {
+ uint32_t bufSize = ImageDataSerializer::ComputeYCbCrBufferSize(
+ aYSize, aYStride, aCbCrSize, aCbCrStride);
+ if (bufSize == 0) {
+ return nullptr;
+ }
+
+ uint32_t yOffset;
+ uint32_t cbOffset;
+ uint32_t crOffset;
+ ImageDataSerializer::ComputeYCbCrOffsets(aYStride, aYSize.height, aCbCrStride,
+ aCbCrSize.height, yOffset, cbOffset,
+ crOffset);
+
+ YCbCrDescriptor descriptor =
+ YCbCrDescriptor(aDisplay, aYSize, aYStride, aCbCrSize, aCbCrStride,
+ yOffset, cbOffset, crOffset, aStereoMode, aColorDepth,
+ aYUVColorSpace, aColorRange, aSubsampling);
+
+ return CreateInternal(
+ aAllocator ? aAllocator->GetTextureForwarder() : nullptr, descriptor,
+ gfx::BackendType::NONE, bufSize, aTextureFlags);
+}
+
+void BufferTextureData::FillInfo(TextureData::Info& aInfo) const {
+ aInfo.size = GetSize();
+ aInfo.format = GetFormat();
+ aInfo.hasSynchronization = false;
+ aInfo.canExposeMappedData = true;
+
+ switch (aInfo.format) {
+ case gfx::SurfaceFormat::YUV:
+ case gfx::SurfaceFormat::UNKNOWN:
+ aInfo.supportsMoz2D = false;
+ break;
+ default:
+ aInfo.supportsMoz2D = true;
+ }
+}
+
+gfx::IntSize BufferTextureData::GetSize() const {
+ return ImageDataSerializer::SizeFromBufferDescriptor(mDescriptor);
+}
+
+gfx::IntRect BufferTextureData::GetPictureRect() const {
+ return ImageDataSerializer::RectFromBufferDescriptor(mDescriptor);
+}
+
+Maybe<gfx::IntSize> BufferTextureData::GetYSize() const {
+ return ImageDataSerializer::YSizeFromBufferDescriptor(mDescriptor);
+}
+
+Maybe<gfx::IntSize> BufferTextureData::GetCbCrSize() const {
+ return ImageDataSerializer::CbCrSizeFromBufferDescriptor(mDescriptor);
+}
+
+Maybe<int32_t> BufferTextureData::GetYStride() const {
+ return ImageDataSerializer::YStrideFromBufferDescriptor(mDescriptor);
+}
+
+Maybe<int32_t> BufferTextureData::GetCbCrStride() const {
+ return ImageDataSerializer::CbCrStrideFromBufferDescriptor(mDescriptor);
+}
+
+Maybe<gfx::YUVColorSpace> BufferTextureData::GetYUVColorSpace() const {
+ return ImageDataSerializer::YUVColorSpaceFromBufferDescriptor(mDescriptor);
+}
+
+Maybe<gfx::ColorDepth> BufferTextureData::GetColorDepth() const {
+ return ImageDataSerializer::ColorDepthFromBufferDescriptor(mDescriptor);
+}
+
+Maybe<StereoMode> BufferTextureData::GetStereoMode() const {
+ return ImageDataSerializer::StereoModeFromBufferDescriptor(mDescriptor);
+}
+
+Maybe<gfx::ChromaSubsampling> BufferTextureData::GetChromaSubsampling() const {
+ return ImageDataSerializer::ChromaSubsamplingFromBufferDescriptor(
+ mDescriptor);
+}
+
+gfx::SurfaceFormat BufferTextureData::GetFormat() const {
+ return ImageDataSerializer::FormatFromBufferDescriptor(mDescriptor);
+}
+
+already_AddRefed<gfx::DrawTarget> BufferTextureData::BorrowDrawTarget() {
+ if (mDescriptor.type() != BufferDescriptor::TRGBDescriptor) {
+ return nullptr;
+ }
+
+ const RGBDescriptor& rgb = mDescriptor.get_RGBDescriptor();
+
+ uint32_t stride = ImageDataSerializer::GetRGBStride(rgb);
+ RefPtr<gfx::DrawTarget> dt;
+ if (gfx::Factory::DoesBackendSupportDataDrawtarget(mMoz2DBackend)) {
+ dt = gfx::Factory::CreateDrawTargetForData(
+ mMoz2DBackend, GetBuffer(), rgb.size(), stride, rgb.format(), true);
+ }
+ if (!dt) {
+ // Fall back to supported platform backend. Note that mMoz2DBackend
+ // does not match the draw target type.
+ dt = gfxPlatform::CreateDrawTargetForData(GetBuffer(), rgb.size(), stride,
+ rgb.format(), true);
+ }
+
+ if (!dt) {
+ gfxCriticalNote << "BorrowDrawTarget failure, original backend "
+ << (int)mMoz2DBackend;
+ }
+
+ return dt.forget();
+}
+
+bool BufferTextureData::BorrowMappedData(MappedTextureData& aData) {
+ if (GetFormat() == gfx::SurfaceFormat::YUV) {
+ return false;
+ }
+
+ gfx::IntSize size = GetSize();
+
+ aData.data = GetBuffer();
+ aData.size = size;
+ aData.format = GetFormat();
+ aData.stride =
+ ImageDataSerializer::ComputeRGBStride(aData.format, size.width);
+
+ return true;
+}
+
+bool BufferTextureData::BorrowMappedYCbCrData(MappedYCbCrTextureData& aMap) {
+ if (mDescriptor.type() != BufferDescriptor::TYCbCrDescriptor) {
+ return false;
+ }
+
+ const YCbCrDescriptor& desc = mDescriptor.get_YCbCrDescriptor();
+
+ uint8_t* data = GetBuffer();
+ auto ySize = desc.ySize();
+ auto cbCrSize = desc.cbCrSize();
+
+ aMap.stereoMode = desc.stereoMode();
+ aMap.metadata = nullptr;
+ uint32_t bytesPerPixel =
+ BytesPerPixel(SurfaceFormatForColorDepth(desc.colorDepth()));
+
+ aMap.y.data = data + desc.yOffset();
+ aMap.y.size = ySize;
+ aMap.y.stride = desc.yStride();
+ aMap.y.skip = 0;
+ aMap.y.bytesPerPixel = bytesPerPixel;
+
+ aMap.cb.data = data + desc.cbOffset();
+ aMap.cb.size = cbCrSize;
+ aMap.cb.stride = desc.cbCrStride();
+ aMap.cb.skip = 0;
+ aMap.cb.bytesPerPixel = bytesPerPixel;
+
+ aMap.cr.data = data + desc.crOffset();
+ aMap.cr.size = cbCrSize;
+ aMap.cr.stride = desc.cbCrStride();
+ aMap.cr.skip = 0;
+ aMap.cr.bytesPerPixel = bytesPerPixel;
+
+ return true;
+}
+
+bool BufferTextureData::UpdateFromSurface(gfx::SourceSurface* aSurface) {
+ if (mDescriptor.type() != BufferDescriptor::TRGBDescriptor) {
+ return false;
+ }
+ const RGBDescriptor& rgb = mDescriptor.get_RGBDescriptor();
+
+ uint32_t stride = ImageDataSerializer::GetRGBStride(rgb);
+ RefPtr<gfx::DataSourceSurface> surface =
+ gfx::Factory::CreateWrappingDataSourceSurface(GetBuffer(), stride,
+ rgb.size(), rgb.format());
+
+ if (!surface) {
+ gfxCriticalError() << "Failed to get serializer as surface!";
+ return false;
+ }
+
+ RefPtr<gfx::DataSourceSurface> srcSurf = aSurface->GetDataSurface();
+
+ if (!srcSurf) {
+ gfxCriticalError() << "Failed to GetDataSurface in UpdateFromSurface (BT).";
+ return false;
+ }
+
+ if (surface->GetSize() != srcSurf->GetSize() ||
+ surface->GetFormat() != srcSurf->GetFormat()) {
+ gfxCriticalError() << "Attempt to update texture client from a surface "
+ "with a different size or format (BT)! This: "
+ << surface->GetSize() << " " << surface->GetFormat()
+ << " Other: " << aSurface->GetSize() << " "
+ << aSurface->GetFormat();
+ return false;
+ }
+
+ gfx::DataSourceSurface::MappedSurface sourceMap;
+ gfx::DataSourceSurface::MappedSurface destMap;
+ if (!srcSurf->Map(gfx::DataSourceSurface::READ, &sourceMap)) {
+ gfxCriticalError()
+ << "Failed to map source surface for UpdateFromSurface (BT).";
+ return false;
+ }
+
+ if (!surface->Map(gfx::DataSourceSurface::WRITE, &destMap)) {
+ srcSurf->Unmap();
+ gfxCriticalError()
+ << "Failed to map destination surface for UpdateFromSurface.";
+ return false;
+ }
+
+ for (int y = 0; y < srcSurf->GetSize().height; y++) {
+ memcpy(destMap.mData + destMap.mStride * y,
+ sourceMap.mData + sourceMap.mStride * y,
+ srcSurf->GetSize().width * BytesPerPixel(srcSurf->GetFormat()));
+ }
+
+ srcSurf->Unmap();
+ surface->Unmap();
+
+ return true;
+}
+
+bool MemoryTextureData::Serialize(SurfaceDescriptor& aOutDescriptor) {
+ MOZ_ASSERT(GetFormat() != gfx::SurfaceFormat::UNKNOWN);
+ if (GetFormat() == gfx::SurfaceFormat::UNKNOWN) {
+ return false;
+ }
+
+ uintptr_t ptr = reinterpret_cast<uintptr_t>(mBuffer);
+ aOutDescriptor = SurfaceDescriptorBuffer(mDescriptor, MemoryOrShmem(ptr));
+
+ return true;
+}
+
+static bool InitBuffer(uint8_t* buf, size_t bufSize, gfx::SurfaceFormat aFormat,
+ TextureAllocationFlags aAllocFlags, bool aAlreadyZero) {
+ if (!buf) {
+ gfxDebug() << "BufferTextureData: Failed to allocate " << bufSize
+ << " bytes";
+ return false;
+ }
+
+ if (aAllocFlags & ALLOC_CLEAR_BUFFER) {
+ if (aFormat == gfx::SurfaceFormat::B8G8R8X8) {
+ // Even though BGRX was requested, XRGB_UINT32 is what is meant,
+ // so use 0xFF000000 to put alpha in the right place.
+ libyuv::ARGBRect(buf, bufSize, 0, 0, bufSize / sizeof(uint32_t), 1,
+ 0xFF000000);
+ } else if (!aAlreadyZero) {
+ memset(buf, 0, bufSize);
+ }
+ }
+
+ return true;
+}
+
+MemoryTextureData* MemoryTextureData::Create(gfx::IntSize aSize,
+ gfx::SurfaceFormat aFormat,
+ gfx::BackendType aMoz2DBackend,
+ LayersBackend aLayersBackend,
+ TextureFlags aFlags,
+ TextureAllocationFlags aAllocFlags,
+ IShmemAllocator* aAllocator) {
+ // Should have used CreateForYCbCr.
+ MOZ_ASSERT(aFormat != gfx::SurfaceFormat::YUV);
+
+ if (aSize.width <= 0 || aSize.height <= 0) {
+ gfxDebug() << "Asking for buffer of invalid size " << aSize.width << "x"
+ << aSize.height;
+ return nullptr;
+ }
+
+ uint32_t bufSize = ImageDataSerializer::ComputeRGBBufferSize(aSize, aFormat);
+ if (!bufSize) {
+ return nullptr;
+ }
+
+ uint8_t* buf = new (fallible) uint8_t[bufSize];
+ if (!InitBuffer(buf, bufSize, aFormat, aAllocFlags, false)) {
+ return nullptr;
+ }
+
+ GfxMemoryImageReporter::DidAlloc(buf);
+
+ BufferDescriptor descriptor = RGBDescriptor(aSize, aFormat);
+
+ // Remote textures are not managed by a texture client, so we need to ensure
+ // that memory is freed when the owning MemoryTextureData goes away.
+ bool autoDeallocate = !!(aFlags & TextureFlags::REMOTE_TEXTURE);
+ return new MemoryTextureData(descriptor, aMoz2DBackend, buf, bufSize,
+ autoDeallocate);
+}
+
+void MemoryTextureData::Deallocate(LayersIPCChannel*) {
+ MOZ_ASSERT(mBuffer);
+ GfxMemoryImageReporter::WillFree(mBuffer);
+ delete[] mBuffer;
+ mBuffer = nullptr;
+}
+
+TextureData* MemoryTextureData::CreateSimilar(
+ LayersIPCChannel* aAllocator, LayersBackend aLayersBackend,
+ TextureFlags aFlags, TextureAllocationFlags aAllocFlags) const {
+ return MemoryTextureData::Create(GetSize(), GetFormat(), mMoz2DBackend,
+ aLayersBackend, aFlags, aAllocFlags,
+ aAllocator);
+}
+
+bool ShmemTextureData::Serialize(SurfaceDescriptor& aOutDescriptor) {
+ MOZ_ASSERT(GetFormat() != gfx::SurfaceFormat::UNKNOWN);
+ if (GetFormat() == gfx::SurfaceFormat::UNKNOWN) {
+ return false;
+ }
+
+ aOutDescriptor =
+ SurfaceDescriptorBuffer(mDescriptor, MemoryOrShmem(std::move(mShmem)));
+
+ return true;
+}
+
+ShmemTextureData* ShmemTextureData::Create(gfx::IntSize aSize,
+ gfx::SurfaceFormat aFormat,
+ gfx::BackendType aMoz2DBackend,
+ LayersBackend aLayersBackend,
+ TextureFlags aFlags,
+ TextureAllocationFlags aAllocFlags,
+ IShmemAllocator* aAllocator) {
+ MOZ_ASSERT(aAllocator);
+ // Should have used CreateForYCbCr.
+ MOZ_ASSERT(aFormat != gfx::SurfaceFormat::YUV);
+
+ if (!aAllocator) {
+ return nullptr;
+ }
+
+ if (aSize.width <= 0 || aSize.height <= 0) {
+ gfxDebug() << "Asking for buffer of invalid size " << aSize.width << "x"
+ << aSize.height;
+ return nullptr;
+ }
+
+ uint32_t bufSize = ImageDataSerializer::ComputeRGBBufferSize(aSize, aFormat);
+ if (!bufSize) {
+ return nullptr;
+ }
+
+ mozilla::ipc::Shmem shm;
+ if (!aAllocator->AllocUnsafeShmem(bufSize, &shm)) {
+ return nullptr;
+ }
+
+ uint8_t* buf = shm.get<uint8_t>();
+ if (!InitBuffer(buf, bufSize, aFormat, aAllocFlags, true)) {
+ return nullptr;
+ }
+
+ BufferDescriptor descriptor = RGBDescriptor(aSize, aFormat);
+
+ return new ShmemTextureData(descriptor, aMoz2DBackend, shm);
+}
+
+TextureData* ShmemTextureData::CreateSimilar(
+ LayersIPCChannel* aAllocator, LayersBackend aLayersBackend,
+ TextureFlags aFlags, TextureAllocationFlags aAllocFlags) const {
+ return ShmemTextureData::Create(GetSize(), GetFormat(), mMoz2DBackend,
+ aLayersBackend, aFlags, aAllocFlags,
+ aAllocator);
+}
+
+void ShmemTextureData::Deallocate(LayersIPCChannel* aAllocator) {
+ aAllocator->DeallocShmem(mShmem);
+}
+
+} // namespace layers
+} // namespace mozilla