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// Copyright 2013 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.
#ifndef CC_VIDEO_FRAME_PROVIDER_CLIENT_IMPL_H_
#define CC_VIDEO_FRAME_PROVIDER_CLIENT_IMPL_H_
#include "base/memory/ref_counted.h"
#include "base/synchronization/lock.h"
#include "cc/video_frame_provider.h"
#include "ui/gfx/transform.h"
namespace media {
class VideoFrame;
}
namespace cc {
class VideoLayerImpl;
class VideoFrameProviderClientImpl :
public VideoFrameProvider::Client,
public base::RefCounted<VideoFrameProviderClientImpl> {
public:
static scoped_refptr<VideoFrameProviderClientImpl> Create(
VideoFrameProvider* provider);
void set_active_video_layer(VideoLayerImpl* video_layer) {
active_video_layer_ = video_layer;
}
void Stop();
bool Stopped() const { return !provider_; }
media::VideoFrame* AcquireLockAndCurrentFrame();
void PutCurrentFrame(media::VideoFrame* frame);
void ReleaseLock();
const gfx::Transform& stream_texture_matrix() const {
return stream_texture_matrix_;
}
// VideoFrameProvider::Client implementation.
virtual void StopUsingProvider() OVERRIDE; // Callable on any thread.
virtual void DidReceiveFrame() OVERRIDE; // Callable on impl thread.
virtual void DidUpdateMatrix(const float*) OVERRIDE; // Callable on impl thread.
private:
explicit VideoFrameProviderClientImpl(VideoFrameProvider* provider);
friend class base::RefCounted<VideoFrameProviderClientImpl>;
virtual ~VideoFrameProviderClientImpl();
VideoLayerImpl* active_video_layer_;
// Guards the destruction of provider_ and the frame that it provides
base::Lock provider_lock_;
VideoFrameProvider* provider_;
gfx::Transform stream_texture_matrix_;
};
} // namespace cc
#endif // CC_VIDEO_FRAME_PROVIDER_CLIENT_IMPL_H_
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