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// Copyright (c) 2012 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 WEBKIT_MEDIA_WEBMEDIAPLAYER_PROXY_H_
#define WEBKIT_MEDIA_WEBMEDIAPLAYER_PROXY_H_
#include <list>
#include <string>
#include <vector>
#include "base/memory/ref_counted.h"
#include "base/synchronization/lock.h"
#include "media/base/decryptor_client.h"
#include "media/base/pipeline.h"
#include "media/filters/chunk_demuxer.h"
#include "media/filters/chunk_demuxer_client.h"
#include "media/filters/ffmpeg_video_decoder.h"
#include "webkit/media/buffered_data_source.h"
#include "webkit/media/skcanvas_video_renderer.h"
class SkCanvas;
namespace base {
class MessageLoopProxy;
}
namespace gfx {
class Rect;
}
namespace media {
class VideoFrame;
class VideoRendererBase;
}
namespace webkit_media {
class WebMediaPlayerImpl;
// Acts as a thread proxy between the various threads used for multimedia and
// the render thread that WebMediaPlayerImpl is running on.
class WebMediaPlayerProxy
: public base::RefCountedThreadSafe<WebMediaPlayerProxy>,
public media::ChunkDemuxerClient,
public media::DecryptorClient {
public:
WebMediaPlayerProxy(const scoped_refptr<base::MessageLoopProxy>& render_loop,
WebMediaPlayerImpl* webmediaplayer);
const scoped_refptr<BufferedDataSource>& data_source() {
return data_source_;
}
void set_data_source(const scoped_refptr<BufferedDataSource>& data_source) {
data_source_ = data_source;
}
// TODO(scherkus): remove this once VideoRendererBase::PaintCB passes
// ownership of the VideoFrame http://crbug.com/108435
void set_frame_provider(media::VideoRendererBase* frame_provider) {
frame_provider_ = frame_provider;
}
// Methods for Filter -> WebMediaPlayerImpl communication.
void Repaint();
// Methods for WebMediaPlayerImpl -> Filter communication.
void Paint(SkCanvas* canvas, const gfx::Rect& dest_rect, uint8_t alpha);
void Detach();
void GetCurrentFrame(scoped_refptr<media::VideoFrame>* frame_out);
void PutCurrentFrame(scoped_refptr<media::VideoFrame> frame);
bool HasSingleOrigin();
bool DidPassCORSAccessCheck() const;
void AbortDataSource();
// ChunkDemuxerClient implementation.
virtual void DemuxerOpened(media::ChunkDemuxer* demuxer) OVERRIDE;
virtual void DemuxerClosed() OVERRIDE;
virtual void DemuxerNeedKey(scoped_array<uint8> init_data,
int init_data_size) OVERRIDE;
// Methods for Demuxer communication.
void DemuxerStartWaitingForSeek();
void DemuxerCancelPendingSeek();
media::ChunkDemuxer::Status DemuxerAddId(const std::string& id,
const std::string& type,
std::vector<std::string>& codecs);
void DemuxerRemoveId(const std::string& id);
media::Ranges<base::TimeDelta> DemuxerBufferedRange(const std::string& id);
bool DemuxerAppend(const std::string& id, const uint8* data, size_t length);
void DemuxerAbort(const std::string& id);
void DemuxerSetDuration(base::TimeDelta duration);
void DemuxerEndOfStream(media::PipelineStatus status);
void DemuxerShutdown();
bool DemuxerSetTimestampOffset(const std::string& id, base::TimeDelta offset);
// DecryptorClient implementation.
virtual void KeyAdded(const std::string& key_system,
const std::string& session_id) OVERRIDE;
virtual void KeyError(const std::string& key_system,
const std::string& session_id,
media::Decryptor::KeyError error_code,
int system_code) OVERRIDE;
virtual void KeyMessage(const std::string& key_system,
const std::string& session_id,
scoped_array<uint8> message,
int message_length,
const std::string& default_url) OVERRIDE;
virtual void NeedKey(const std::string& key_system,
const std::string& session_id,
scoped_array<uint8> init_data,
int init_data_size) OVERRIDE;
private:
friend class base::RefCountedThreadSafe<WebMediaPlayerProxy>;
virtual ~WebMediaPlayerProxy();
// Invoke |webmediaplayer_| to perform a repaint.
void RepaintTask();
void DemuxerOpenedTask(const scoped_refptr<media::ChunkDemuxer>& demuxer);
void DemuxerClosedTask();
// Notify |webmediaplayer_| that a key has been added.
void KeyAddedTask(const std::string& key_system,
const std::string& session_id);
// Notify |webmediaplayer_| that a key error occurred.
void KeyErrorTask(const std::string& key_system,
const std::string& session_id,
media::Decryptor::KeyError error_code,
int system_code);
// Notify |webmediaplayer_| that a key message has been generated.
void KeyMessageTask(const std::string& key_system,
const std::string& session_id,
scoped_array<uint8> message,
int message_length,
const std::string& default_url);
// Notify |webmediaplayer_| that a key is needed for decryption.
void NeedKeyTask(const std::string& key_system,
const std::string& session_id,
scoped_array<uint8> init_data,
int init_data_size);
// The render message loop where WebKit lives.
scoped_refptr<base::MessageLoopProxy> render_loop_;
WebMediaPlayerImpl* webmediaplayer_;
scoped_refptr<BufferedDataSource> data_source_;
scoped_refptr<media::VideoRendererBase> frame_provider_;
SkCanvasVideoRenderer video_renderer_;
base::Lock lock_;
int outstanding_repaints_;
scoped_refptr<media::ChunkDemuxer> chunk_demuxer_;
DISALLOW_IMPLICIT_CONSTRUCTORS(WebMediaPlayerProxy);
};
} // namespace webkit_media
#endif // WEBKIT_MEDIA_WEBMEDIAPLAYER_PROXY_H_
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