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-rw-r--r--gfx/layers/BufferTexture.cpp594
1 files changed, 594 insertions, 0 deletions
diff --git a/gfx/layers/BufferTexture.cpp b/gfx/layers/BufferTexture.cpp
new file mode 100644
index 000000000..88c59ac90
--- /dev/null
+++ b/gfx/layers/BufferTexture.cpp
@@ -0,0 +1,594 @@
+/* -*- 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 "BufferTexture.h"
+#include "mozilla/layers/ImageDataSerializer.h"
+#include "mozilla/layers/ISurfaceAllocator.h"
+#include "mozilla/layers/CompositableForwarder.h"
+#include "mozilla/gfx/Logging.h"
+#include "mozilla/gfx/2D.h"
+#include "mozilla/fallible.h"
+#include "libyuv.h"
+
+#ifdef MOZ_WIDGET_GTK
+#include "gfxPlatformGtk.h"
+#endif
+
+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,
+ LayersIPCChannel* 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)
+ : BufferTextureData(aDesc, aMoz2DBackend)
+ , mBuffer(aBuffer)
+ , mBufferSize(aBufferSize)
+ {
+ MOZ_ASSERT(aBuffer);
+ MOZ_ASSERT(aBufferSize);
+ }
+
+ virtual uint8_t* GetBuffer() override { return mBuffer; }
+
+ virtual size_t GetBufferSize() override { return mBufferSize; }
+
+protected:
+ uint8_t* mBuffer;
+ size_t mBufferSize;
+};
+
+class ShmemTextureData : public BufferTextureData
+{
+public:
+ static ShmemTextureData* Create(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
+ gfx::BackendType aMoz2DBackend,
+ LayersBackend aLayersBackend,
+ TextureFlags aFlags,
+ TextureAllocationFlags aAllocFlags,
+ LayersIPCChannel* 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;
+};
+
+static bool UsingX11Compositor()
+{
+#ifdef MOZ_WIDGET_GTK
+ return gfx::gfxVars::UseXRender();
+#endif
+ return false;
+}
+
+bool ComputeHasIntermediateBuffer(gfx::SurfaceFormat aFormat,
+ LayersBackend aLayersBackend)
+{
+ return aLayersBackend != LayersBackend::LAYERS_BASIC
+ || UsingX11Compositor()
+ || aFormat == gfx::SurfaceFormat::UNKNOWN;
+}
+
+BufferTextureData*
+BufferTextureData::Create(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
+ gfx::BackendType aMoz2DBackend,
+ LayersBackend aLayersBackend, TextureFlags aFlags,
+ TextureAllocationFlags aAllocFlags,
+ LayersIPCChannel* aAllocator)
+{
+ if (!aAllocator || aAllocator->IsSameProcess()) {
+ 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, OptimalShmemType(), &shm)) {
+ return nullptr;
+ }
+
+ return new ShmemTextureData(aDesc, aMoz2DBackend, shm);
+ }
+}
+
+BufferTextureData*
+BufferTextureData::CreateForYCbCrWithBufferSize(KnowsCompositor* aAllocator,
+ int32_t aBufferSize,
+ YUVColorSpace aYUVColorSpace,
+ TextureFlags aTextureFlags)
+{
+ if (aBufferSize == 0 || !gfx::Factory::CheckBufferSize(aBufferSize)) {
+ return nullptr;
+ }
+
+ bool hasIntermediateBuffer = aAllocator ? ComputeHasIntermediateBuffer(gfx::SurfaceFormat::YUV,
+ aAllocator->GetCompositorBackendType())
+ : true;
+
+ // Initialize the metadata with something, even if it will have to be rewritten
+ // afterwards since we don't know the dimensions of the texture at this point.
+ BufferDescriptor desc = YCbCrDescriptor(gfx::IntSize(), gfx::IntSize(),
+ 0, 0, 0, StereoMode::MONO,
+ aYUVColorSpace,
+ hasIntermediateBuffer);
+
+ return CreateInternal(aAllocator ? aAllocator->GetTextureForwarder() : nullptr,
+ desc, gfx::BackendType::NONE, aBufferSize, aTextureFlags);
+}
+
+BufferTextureData*
+BufferTextureData::CreateForYCbCr(KnowsCompositor* aAllocator,
+ gfx::IntSize aYSize,
+ gfx::IntSize aCbCrSize,
+ StereoMode aStereoMode,
+ YUVColorSpace aYUVColorSpace,
+ TextureFlags aTextureFlags)
+{
+ uint32_t bufSize = ImageDataSerializer::ComputeYCbCrBufferSize(aYSize, aCbCrSize);
+ if (bufSize == 0) {
+ return nullptr;
+ }
+
+ uint32_t yOffset;
+ uint32_t cbOffset;
+ uint32_t crOffset;
+ ImageDataSerializer::ComputeYCbCrOffsets(aYSize.width, aYSize.height,
+ aCbCrSize.width, aCbCrSize.height,
+ yOffset, cbOffset, crOffset);
+
+ bool hasIntermediateBuffer = aAllocator ? ComputeHasIntermediateBuffer(gfx::SurfaceFormat::YUV,
+ aAllocator->GetCompositorBackendType())
+ : true;
+
+ YCbCrDescriptor descriptor = YCbCrDescriptor(aYSize, aCbCrSize, yOffset, cbOffset,
+ crOffset, aStereoMode, aYUVColorSpace,
+ hasIntermediateBuffer);
+
+ 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;
+
+ if (mDescriptor.type() == BufferDescriptor::TYCbCrDescriptor) {
+ aInfo.hasIntermediateBuffer = mDescriptor.get_YCbCrDescriptor().hasIntermediateBuffer();
+ } else {
+ aInfo.hasIntermediateBuffer = mDescriptor.get_RGBDescriptor().hasIntermediateBuffer();
+ }
+
+ 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);
+}
+
+Maybe<gfx::IntSize>
+BufferTextureData::GetCbCrSize() const
+{
+ return ImageDataSerializer::CbCrSizeFromBufferDescriptor(mDescriptor);
+}
+
+Maybe<YUVColorSpace>
+BufferTextureData::GetYUVColorSpace() const
+{
+ return ImageDataSerializer::YUVColorSpaceFromBufferDescriptor(mDescriptor);
+}
+
+Maybe<StereoMode>
+BufferTextureData::GetStereoMode() const
+{
+ return ImageDataSerializer::StereoModeFromBufferDescriptor(mDescriptor);
+}
+
+gfx::SurfaceFormat
+BufferTextureData::GetFormat() const
+{
+ return ImageDataSerializer::FormatFromBufferDescriptor(mDescriptor);
+}
+
+already_AddRefed<gfx::DrawTarget>
+BufferTextureData::BorrowDrawTarget()
+{
+ if (mDrawTarget) {
+ mDrawTarget->SetTransform(gfx::Matrix());
+ RefPtr<gfx::DrawTarget> dt = mDrawTarget;
+ return dt.forget();
+ }
+
+ if (mDescriptor.type() != BufferDescriptor::TRGBDescriptor) {
+ return nullptr;
+ }
+
+ const RGBDescriptor& rgb = mDescriptor.get_RGBDescriptor();
+
+ uint32_t stride = ImageDataSerializer::GetRGBStride(rgb);
+ mDrawTarget = gfx::Factory::CreateDrawTargetForData(mMoz2DBackend,
+ GetBuffer(), rgb.size(),
+ stride, rgb.format(), true);
+
+ if (mDrawTarget) {
+ RefPtr<gfx::DrawTarget> dt = mDrawTarget;
+ return dt.forget();
+ }
+
+ // TODO - should we warn? should we really fallback to cairo? perhaps
+ // at least update mMoz2DBackend...
+ if (mMoz2DBackend != gfx::BackendType::CAIRO) {
+ mDrawTarget = gfx::Factory::CreateDrawTargetForData(gfx::BackendType::CAIRO,
+ GetBuffer(), rgb.size(),
+ stride, rgb.format(), true);
+ }
+
+ if (!mDrawTarget) {
+ gfxCriticalNote << "BorrowDrawTarget failure, original backend " << (int)mMoz2DBackend;
+ }
+
+ RefPtr<gfx::DrawTarget> dt = mDrawTarget;
+ 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;
+
+ aMap.y.data = data + desc.yOffset();
+ aMap.y.size = ySize;
+ aMap.y.stride = ySize.width;
+ aMap.y.skip = 0;
+
+ aMap.cb.data = data + desc.cbOffset();
+ aMap.cb.size = cbCrSize;
+ aMap.cb.stride = cbCrSize.width;
+ aMap.cb.skip = 0;
+
+ aMap.cr.data = data + desc.crOffset();
+ aMap.cr.size = cbCrSize;
+ aMap.cr.stride = cbCrSize.width;
+ aMap.cr.skip = 0;
+
+ 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;
+}
+
+void
+BufferTextureData::SetDesciptor(const BufferDescriptor& aDescriptor)
+{
+ MOZ_ASSERT(mDescriptor.type() == BufferDescriptor::TYCbCrDescriptor);
+ MOZ_ASSERT(mDescriptor.get_YCbCrDescriptor().ySize() == gfx::IntSize());
+ mDescriptor = aDescriptor;
+}
+
+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) ||
+ (aAllocFlags & ALLOC_CLEAR_BUFFER_BLACK)) {
+ 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);
+ }
+ }
+
+ if (aAllocFlags & ALLOC_CLEAR_BUFFER_WHITE) {
+ memset(buf, 0xFF, bufSize);
+ }
+
+ return true;
+}
+
+MemoryTextureData*
+MemoryTextureData::Create(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
+ gfx::BackendType aMoz2DBackend,
+ LayersBackend aLayersBackend, TextureFlags aFlags,
+ TextureAllocationFlags aAllocFlags,
+ LayersIPCChannel* 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;
+ }
+
+ bool hasIntermediateBuffer = ComputeHasIntermediateBuffer(aFormat, aLayersBackend);
+
+ GfxMemoryImageReporter::DidAlloc(buf);
+
+ BufferDescriptor descriptor = RGBDescriptor(aSize, aFormat, hasIntermediateBuffer);
+
+ return new MemoryTextureData(descriptor, aMoz2DBackend, buf, bufSize);
+}
+
+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(mShmem));
+
+ return true;
+}
+
+ShmemTextureData*
+ShmemTextureData::Create(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
+ gfx::BackendType aMoz2DBackend,
+ LayersBackend aLayersBackend, TextureFlags aFlags,
+ TextureAllocationFlags aAllocFlags,
+ LayersIPCChannel* 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, OptimalShmemType(), &shm)) {
+ return nullptr;
+ }
+
+ uint8_t* buf = shm.get<uint8_t>();
+ if (!InitBuffer(buf, bufSize, aFormat, aAllocFlags, true)) {
+ return nullptr;
+ }
+
+ bool hasIntermediateBuffer = ComputeHasIntermediateBuffer(aFormat, aLayersBackend);
+
+ BufferDescriptor descriptor = RGBDescriptor(aSize, aFormat, hasIntermediateBuffer);
+
+ return new ShmemTextureData(descriptor, aMoz2DBackend, shm);
+
+ return nullptr;
+}
+
+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
+} // namespace