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// Copyright 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/layers/video_layer_impl.h"
#include <stddef.h>
#include "base/bind.h"
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "cc/layers/video_frame_provider_client_impl.h"
#include "cc/trees/layer_tree_frame_sink.h"
#include "cc/trees/layer_tree_impl.h"
#include "cc/trees/occlusion.h"
#include "cc/trees/task_runner_provider.h"
#include "components/viz/client/client_resource_provider.h"
#include "components/viz/common/quads/stream_video_draw_quad.h"
#include "components/viz/common/quads/texture_draw_quad.h"
#include "components/viz/common/quads/yuv_video_draw_quad.h"
#include "components/viz/common/resources/single_release_callback.h"
#include "media/base/video_frame.h"
#include "media/renderers/video_resource_updater.h"
#include "ui/gfx/color_space.h"
namespace cc {
// static
std::unique_ptr<VideoLayerImpl> VideoLayerImpl::Create(
LayerTreeImpl* tree_impl,
int id,
VideoFrameProvider* provider,
media::VideoRotation video_rotation) {
DCHECK(tree_impl->task_runner_provider()->IsMainThreadBlocked());
DCHECK(tree_impl->task_runner_provider()->IsImplThread());
scoped_refptr<VideoFrameProviderClientImpl> provider_client_impl =
VideoFrameProviderClientImpl::Create(
provider, tree_impl->GetVideoFrameControllerClient());
return base::WrapUnique(new VideoLayerImpl(
tree_impl, id, std::move(provider_client_impl), video_rotation));
}
VideoLayerImpl::VideoLayerImpl(
LayerTreeImpl* tree_impl,
int id,
scoped_refptr<VideoFrameProviderClientImpl> provider_client_impl,
media::VideoRotation video_rotation)
: LayerImpl(tree_impl, id),
provider_client_impl_(std::move(provider_client_impl)),
frame_(nullptr),
video_rotation_(video_rotation) {
set_may_contain_video(true);
}
VideoLayerImpl::~VideoLayerImpl() {
if (!provider_client_impl_->Stopped()) {
// In impl side painting, we may have a pending and active layer
// associated with the video provider at the same time. Both have a ref
// on the VideoFrameProviderClientImpl, but we stop when the first
// LayerImpl (the one on the pending tree) is destroyed since we know
// the main thread is blocked for this commit.
DCHECK(layer_tree_impl()->task_runner_provider()->IsImplThread());
DCHECK(layer_tree_impl()->task_runner_provider()->IsMainThreadBlocked());
provider_client_impl_->Stop();
}
}
std::unique_ptr<LayerImpl> VideoLayerImpl::CreateLayerImpl(
LayerTreeImpl* tree_impl) {
return base::WrapUnique(new VideoLayerImpl(
tree_impl, id(), provider_client_impl_, video_rotation_));
}
void VideoLayerImpl::DidBecomeActive() {
provider_client_impl_->SetActiveVideoLayer(this);
}
bool VideoLayerImpl::WillDraw(DrawMode draw_mode,
viz::ClientResourceProvider* resource_provider) {
if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE)
return false;
if (!LayerImpl::WillDraw(draw_mode, resource_provider))
return false;
// Explicitly acquire and release the provider mutex so it can be held from
// WillDraw to DidDraw. Since the compositor thread is in the middle of
// drawing, the layer will not be destroyed before DidDraw is called.
// Therefore, the only thing that will prevent this lock from being released
// is the GPU process locking it. As the GPU process can't cause the
// destruction of the provider (calling StopUsingProvider), holding this
// lock should not cause a deadlock.
frame_ = provider_client_impl_->AcquireLockAndCurrentFrame();
if (!frame_.get()) {
// Drop any resources used by the updater if there is no frame to display.
updater_ = nullptr;
provider_client_impl_->ReleaseLock();
return false;
}
if (!updater_) {
const LayerTreeSettings& settings = layer_tree_impl()->settings();
// TODO(sergeyu): Pass RasterContextProvider when it's available. Then
// remove ContextProvider parameter from VideoResourceUpdater.
updater_ = std::make_unique<media::VideoResourceUpdater>(
layer_tree_impl()->context_provider(),
/*raster_context_provider=*/nullptr,
layer_tree_impl()->layer_tree_frame_sink(),
layer_tree_impl()->resource_provider(),
settings.use_stream_video_draw_quad,
settings.resource_settings.use_gpu_memory_buffer_resources,
settings.resource_settings.use_r16_texture,
layer_tree_impl()->max_texture_size());
}
updater_->ObtainFrameResources(frame_);
return true;
}
void VideoLayerImpl::AppendQuads(viz::RenderPass* render_pass,
AppendQuadsData* append_quads_data) {
DCHECK(frame_.get());
gfx::Transform transform = DrawTransform();
// bounds() is in post-rotation space so quad rect in content space must be
// in pre-rotation space
gfx::Size rotated_size = bounds();
switch (video_rotation_) {
case media::VIDEO_ROTATION_90:
rotated_size = gfx::Size(rotated_size.height(), rotated_size.width());
transform.Rotate(90.0);
transform.Translate(0.0, -rotated_size.height());
break;
case media::VIDEO_ROTATION_180:
transform.Rotate(180.0);
transform.Translate(-rotated_size.width(), -rotated_size.height());
break;
case media::VIDEO_ROTATION_270:
rotated_size = gfx::Size(rotated_size.height(), rotated_size.width());
transform.Rotate(270.0);
transform.Translate(-rotated_size.width(), 0);
break;
case media::VIDEO_ROTATION_0:
break;
}
gfx::Rect quad_rect(rotated_size);
Occlusion occlusion_in_video_space =
draw_properties()
.occlusion_in_content_space.GetOcclusionWithGivenDrawTransform(
transform);
gfx::Rect visible_quad_rect =
occlusion_in_video_space.GetUnoccludedContentRect(quad_rect);
if (visible_quad_rect.IsEmpty())
return;
updater_->AppendQuads(
render_pass, frame_, transform, quad_rect, visible_quad_rect,
draw_properties().rounded_corner_bounds, clip_rect(), is_clipped(),
contents_opaque(), draw_opacity(), GetSortingContextId());
}
void VideoLayerImpl::DidDraw(viz::ClientResourceProvider* resource_provider) {
LayerImpl::DidDraw(resource_provider);
DCHECK(frame_.get());
updater_->ReleaseFrameResources();
provider_client_impl_->PutCurrentFrame();
frame_ = nullptr;
provider_client_impl_->ReleaseLock();
}
SimpleEnclosedRegion VideoLayerImpl::VisibleOpaqueRegion() const {
// If we don't have a frame yet, then we don't have an opaque region.
if (!provider_client_impl_->HasCurrentFrame())
return SimpleEnclosedRegion();
return LayerImpl::VisibleOpaqueRegion();
}
void VideoLayerImpl::ReleaseResources() {
updater_ = nullptr;
}
void VideoLayerImpl::SetNeedsRedraw() {
SetUpdateRect(gfx::UnionRects(update_rect(), gfx::Rect(bounds())));
layer_tree_impl()->SetNeedsRedraw();
}
const char* VideoLayerImpl::LayerTypeAsString() const {
return "cc::VideoLayerImpl";
}
} // namespace cc
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