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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 "ImageClient.h"
#include <stdint.h> // for uint32_t
#include "ImageContainer.h" // for Image, PlanarYCbCrImage, etc
#include "ImageTypes.h" // for ImageFormat::PLANAR_YCBCR, etc
#include "GLImages.h" // for SurfaceTextureImage::Data, etc
#include "gfx2DGlue.h" // for ImageFormatToSurfaceFormat
#include "gfxPlatform.h" // for gfxPlatform
#include "mozilla/Assertions.h" // for MOZ_ASSERT, etc
#include "mozilla/RefPtr.h" // for RefPtr, already_AddRefed
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/BaseSize.h" // for BaseSize
#include "mozilla/gfx/Point.h" // for IntSize
#include "mozilla/gfx/Types.h" // for SurfaceFormat, etc
#include "mozilla/layers/CompositableClient.h" // for CompositableClient
#include "mozilla/layers/CompositableForwarder.h"
#include "mozilla/layers/CompositorTypes.h" // for CompositableType, etc
#include "mozilla/layers/ISurfaceAllocator.h"
#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor, etc
#include "mozilla/layers/TextureForwarder.h"
#include "mozilla/layers/TextureClient.h" // for TextureClient, etc
#include "mozilla/layers/TextureClientOGL.h" // for SurfaceTextureClient
#include "mozilla/mozalloc.h" // for operator delete, etc
#include "nsCOMPtr.h" // for already_AddRefed
#include "nsDebug.h" // for NS_WARNING, NS_ASSERTION
#include "nsISupportsImpl.h" // for Image::Release, etc
#include "nsRect.h" // for mozilla::gfx::IntRect
namespace mozilla {
namespace layers {
using namespace mozilla::gfx;
/* static */
already_AddRefed<ImageClient> ImageClient::CreateImageClient(
CompositableType aCompositableHostType, CompositableForwarder* aForwarder,
TextureFlags aFlags) {
RefPtr<ImageClient> result = nullptr;
switch (aCompositableHostType) {
case CompositableType::IMAGE:
result =
new ImageClientSingle(aForwarder, aFlags, CompositableType::IMAGE);
break;
case CompositableType::UNKNOWN:
result = nullptr;
break;
default:
MOZ_CRASH("GFX: unhandled program type image");
}
NS_ASSERTION(result, "Failed to create ImageClient");
return result.forget();
}
void ImageClient::RemoveTexture(TextureClient* aTexture) {
GetForwarder()->RemoveTextureFromCompositable(this, aTexture);
}
ImageClientSingle::ImageClientSingle(CompositableForwarder* aFwd,
TextureFlags aFlags,
CompositableType aType)
: ImageClient(aFwd, aFlags, aType) {}
TextureInfo ImageClientSingle::GetTextureInfo() const {
return TextureInfo(CompositableType::IMAGE);
}
void ImageClientSingle::FlushAllImages() {
for (auto& b : mBuffers) {
// It should be safe to just assume a default render root here, even if
// the texture actually presents in a content render root, as the only
// risk would be if the content render root has not / is not going to
// generate a frame before the texture gets cleared.
RemoveTexture(b.mTextureClient);
}
mBuffers.Clear();
}
/* static */
already_AddRefed<TextureClient> ImageClient::CreateTextureClientForImage(
Image* aImage, KnowsCompositor* aKnowsCompositor) {
RefPtr<TextureClient> texture;
if (aImage->GetFormat() == ImageFormat::PLANAR_YCBCR) {
PlanarYCbCrImage* ycbcr = static_cast<PlanarYCbCrImage*>(aImage);
const PlanarYCbCrData* data = ycbcr->GetData();
if (!data) {
return nullptr;
}
texture = TextureClient::CreateForYCbCr(
aKnowsCompositor, data->mPictureRect, data->YDataSize(), data->mYStride,
data->CbCrDataSize(), data->mCbCrStride, data->mStereoMode,
data->mColorDepth, data->mYUVColorSpace, data->mColorRange,
data->mChromaSubsampling, TextureFlags::DEFAULT);
if (!texture) {
return nullptr;
}
TextureClientAutoLock autoLock(texture, OpenMode::OPEN_WRITE_ONLY);
if (!autoLock.Succeeded()) {
return nullptr;
}
bool status = UpdateYCbCrTextureClient(texture, *data);
MOZ_ASSERT(status);
if (!status) {
return nullptr;
}
#ifdef MOZ_WIDGET_ANDROID
} else if (aImage->GetFormat() == ImageFormat::SURFACE_TEXTURE) {
gfx::IntSize size = aImage->GetSize();
SurfaceTextureImage* typedImage = aImage->AsSurfaceTextureImage();
texture = AndroidSurfaceTextureData::CreateTextureClient(
typedImage->GetHandle(), size, typedImage->GetContinuous(),
typedImage->GetOriginPos(), typedImage->GetHasAlpha(),
aKnowsCompositor->GetTextureForwarder(), TextureFlags::DEFAULT);
#endif
} else {
RefPtr<gfx::SourceSurface> surface = aImage->GetAsSourceSurface();
MOZ_ASSERT(surface);
texture = TextureClient::CreateForDrawing(
aKnowsCompositor, surface->GetFormat(), aImage->GetSize(),
BackendSelector::Content, TextureFlags::DEFAULT);
if (!texture) {
return nullptr;
}
MOZ_ASSERT(texture->CanExposeDrawTarget());
if (!texture->Lock(OpenMode::OPEN_WRITE_ONLY)) {
return nullptr;
}
{
// We must not keep a reference to the DrawTarget after it has been
// unlocked.
DrawTarget* dt = texture->BorrowDrawTarget();
if (!dt) {
gfxWarning()
<< "ImageClientSingle::UpdateImage failed in BorrowDrawTarget";
return nullptr;
}
MOZ_ASSERT(surface.get());
dt->CopySurface(surface, IntRect(IntPoint(), surface->GetSize()),
IntPoint());
}
texture->Unlock();
}
return texture.forget();
}
bool ImageClientSingle::UpdateImage(ImageContainer* aContainer,
uint32_t aContentFlags) {
AutoTArray<ImageContainer::OwningImage, 4> images;
uint32_t generationCounter;
aContainer->GetCurrentImages(&images, &generationCounter);
if (mLastUpdateGenerationCounter == generationCounter) {
return true;
}
mLastUpdateGenerationCounter = generationCounter;
// Don't try to update to invalid images.
images.RemoveElementsBy(
[](const auto& image) { return !image.mImage->IsValid(); });
if (images.IsEmpty()) {
// This can happen if a ClearAllImages raced with SetCurrentImages from
// another thread and ClearImagesFromImageBridge ran after the
// SetCurrentImages call but before UpdateImageClientNow.
// This can also happen if all images in the list are invalid.
// We return true because the caller would attempt to recreate the
// ImageClient otherwise, and that isn't going to help.
for (auto& b : mBuffers) {
RemoveTexture(b.mTextureClient);
}
mBuffers.Clear();
return true;
}
nsTArray<Buffer> newBuffers;
AutoTArray<CompositableForwarder::TimedTextureClient, 4> textures;
for (auto& img : images) {
Image* image = img.mImage;
RefPtr<TextureClient> texture = image->GetTextureClient(GetForwarder());
const bool hasTextureClient = !!texture;
for (int32_t i = mBuffers.Length() - 1; i >= 0; --i) {
if (mBuffers[i].mImageSerial == image->GetSerial()) {
if (hasTextureClient) {
MOZ_ASSERT(image->GetTextureClient(GetForwarder()) ==
mBuffers[i].mTextureClient);
} else {
texture = mBuffers[i].mTextureClient;
}
// Remove this element from mBuffers so mBuffers only contains
// images that aren't present in 'images'
mBuffers.RemoveElementAt(i);
}
}
if (!texture) {
// Slow path, we should not be hitting it very often and if we do it means
// we are using an Image class that is not backed by textureClient and we
// should fix it.
texture = CreateTextureClientForImage(image, GetForwarder());
}
if (!texture) {
return false;
}
// We check if the texture's allocator is still open, since in between media
// decoding a frame and adding it to the compositable, we could have
// restarted the GPU process.
if (!texture->GetAllocator()->IPCOpen()) {
continue;
}
if (!AddTextureClient(texture)) {
return false;
}
CompositableForwarder::TimedTextureClient* t = textures.AppendElement();
t->mTextureClient = texture;
t->mTimeStamp = img.mTimeStamp;
t->mPictureRect = image->GetPictureRect();
t->mFrameID = img.mFrameID;
t->mProducerID = img.mProducerID;
Buffer* newBuf = newBuffers.AppendElement();
newBuf->mImageSerial = image->GetSerial();
newBuf->mTextureClient = texture;
texture->SyncWithObject(GetForwarder()->GetSyncObject());
}
GetForwarder()->UseTextures(this, textures);
for (auto& b : mBuffers) {
RemoveTexture(b.mTextureClient);
}
mBuffers = std::move(newBuffers);
return true;
}
RefPtr<TextureClient> ImageClientSingle::GetForwardedTexture() {
if (mBuffers.Length() == 0) {
return nullptr;
}
return mBuffers[0].mTextureClient;
}
bool ImageClientSingle::AddTextureClient(TextureClient* aTexture) {
MOZ_ASSERT((mTextureFlags & aTexture->GetFlags()) == mTextureFlags);
return CompositableClient::AddTextureClient(aTexture);
}
void ImageClientSingle::OnDetach() { mBuffers.Clear(); }
ImageClient::ImageClient(CompositableForwarder* aFwd, TextureFlags aFlags,
CompositableType aType)
: CompositableClient(aFwd, aFlags),
mType(aType),
mLastUpdateGenerationCounter(0) {}
} // namespace layers
} // namespace mozilla