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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 CONTENT_RENDERER_MEDIA_ANDROID_MEDIA_SOURCE_DELEGATE_H_
#define CONTENT_RENDERER_MEDIA_ANDROID_MEDIA_SOURCE_DELEGATE_H_
#include "base/callback.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "media/base/android/demuxer_stream_player_params.h"
#include "media/base/decryptor.h"
#include "media/base/demuxer.h"
#include "media/base/media_keys.h"
#include "media/base/pipeline_status.h"
#include "media/base/ranges.h"
#include "media/base/text_track.h"
#include "third_party/WebKit/public/web/WebMediaPlayer.h"
namespace media {
class ChunkDemuxer;
class DecoderBuffer;
class DecryptingDemuxerStream;
class DemuxerStream;
class MediaLog;
struct MediaPlayerHostMsg_ReadFromDemuxerAck_Params;
}
namespace content {
class WebMediaPlayerProxyAndroid;
class MediaSourceDelegate : public media::DemuxerHost {
public:
typedef base::Callback<void(WebKit::WebMediaPlayer::NetworkState)>
UpdateNetworkStateCB;
typedef base::Callback<void(const base::TimeDelta&)> DurationChangeCB;
// Helper class used by scoped_ptr to destroy an instance of
// MediaSourceDelegate.
class Destroyer {
public:
inline void operator()(void* media_source_delegate) const {
static_cast<MediaSourceDelegate*>(media_source_delegate)->Destroy();
}
};
MediaSourceDelegate(WebMediaPlayerProxyAndroid* proxy,
int player_id,
media::MediaLog* media_log);
// Initialize the MediaSourceDelegate. |media_source| will be owned by
// this object after this call.
void InitializeMediaSource(
WebKit::WebMediaSource* media_source,
const media::NeedKeyCB& need_key_cb,
const media::SetDecryptorReadyCB& set_decryptor_ready_cb,
const UpdateNetworkStateCB& update_network_state_cb,
const DurationChangeCB& duration_change_cb);
#if defined(GOOGLE_TV)
void InitializeMediaStream(
media::Demuxer* demuxer,
const UpdateNetworkStateCB& update_network_state_cb);
#endif
const WebKit::WebTimeRanges& Buffered();
size_t DecodedFrameCount() const;
size_t DroppedFrameCount() const;
size_t AudioDecodedByteCount() const;
size_t VideoDecodedByteCount() const;
// Seeks the demuxer and acknowledges the seek request with |seek_request_id|
// after the seek has been completed. This method can be called during pending
// seeks, in which case only the last seek request will be acknowledged.
void Seek(base::TimeDelta time, unsigned seek_request_id);
void NotifyKeyAdded(const std::string& key_system);
// Called when DemuxerStreamPlayer needs to read data from ChunkDemuxer.
void OnReadFromDemuxer(media::DemuxerStream::Type type);
// Called when the player needs the new config data from ChunkDemuxer.
void OnMediaConfigRequest();
// Called by the Destroyer to destroy an instance of this object.
void Destroy();
private:
// This is private to enforce use of the Destroyer.
virtual ~MediaSourceDelegate();
// Methods inherited from DemuxerHost.
virtual void SetTotalBytes(int64 total_bytes) OVERRIDE;
virtual void AddBufferedByteRange(int64 start, int64 end) OVERRIDE;
virtual void AddBufferedTimeRange(base::TimeDelta start,
base::TimeDelta end) OVERRIDE;
virtual void SetDuration(base::TimeDelta duration) OVERRIDE;
virtual void OnDemuxerError(media::PipelineStatus status) OVERRIDE;
// Callback for ChunkDemuxer initialization.
void OnDemuxerInitDone(media::PipelineStatus status);
// Initializes DecryptingDemuxerStreams if audio/video stream is encrypted.
void InitAudioDecryptingDemuxerStream();
void InitVideoDecryptingDemuxerStream();
// Callbacks for DecryptingDemuxerStream::Initialize().
void OnAudioDecryptingDemuxerStreamInitDone(media::PipelineStatus status);
void OnVideoDecryptingDemuxerStreamInitDone(media::PipelineStatus status);
// Callback for Demuxer seek. It will call ResetAudioDecryptingDemuxerStream()
// as part of the reset callback chain.
void OnDemuxerSeekDone(unsigned seek_request_id,
media::PipelineStatus status);
// Resets AudioDecryptingDemuxerStream if it exists. Then it will call
// ResetVideoDecryptingDemuxerStream() as part of the reset callback chain.
void ResetAudioDecryptingDemuxerStream();
// Resets VideoDecryptingDemuxerStream if it exists. Then it will call
// SendSeekRequestAck() as part of the reset callback chain.
void ResetVideoDecryptingDemuxerStream();
// Sends SeekRequestAck to the browser.
void SendSeekRequestAck();
void OnDemuxerStopDone();
void OnDemuxerOpened();
void OnNeedKey(const std::string& type,
const std::string& session_id,
scoped_ptr<uint8[]> init_data,
int init_data_size);
scoped_ptr<media::TextTrack> OnAddTextTrack(media::TextKind kind,
const std::string& label,
const std::string& language);
void NotifyDemuxerReady();
bool CanNotifyDemuxerReady();
// Reads an access unit from the demuxer stream |stream| and stores it in
// the |index|th access unit in |params|.
void ReadFromDemuxerStream(
media::DemuxerStream::Type type,
media::MediaPlayerHostMsg_ReadFromDemuxerAck_Params* params,
size_t index);
void OnBufferReady(
media::DemuxerStream::Type type,
media::MediaPlayerHostMsg_ReadFromDemuxerAck_Params* params,
size_t index,
media::DemuxerStream::Status status,
const scoped_refptr<media::DecoderBuffer>& buffer);
// Helper function for calculating duration.
int GetDurationMs();
bool HasEncryptedStream();
base::WeakPtrFactory<MediaSourceDelegate> weak_this_;
WebMediaPlayerProxyAndroid* proxy_;
int player_id_;
scoped_refptr<media::MediaLog> media_log_;
UpdateNetworkStateCB update_network_state_cb_;
DurationChangeCB duration_change_cb_;
scoped_ptr<media::ChunkDemuxer> chunk_demuxer_;
scoped_ptr<WebKit::WebMediaSource> media_source_;
media::Demuxer* demuxer_;
bool is_demuxer_ready_;
media::SetDecryptorReadyCB set_decryptor_ready_cb_;
scoped_ptr<media::DecryptingDemuxerStream> audio_decrypting_demuxer_stream_;
scoped_ptr<media::DecryptingDemuxerStream> video_decrypting_demuxer_stream_;
media::DemuxerStream* audio_stream_;
media::DemuxerStream* video_stream_;
media::PipelineStatistics statistics_;
media::Ranges<base::TimeDelta> buffered_time_ranges_;
// Keep a list of buffered time ranges.
WebKit::WebTimeRanges buffered_web_time_ranges_;
media::NeedKeyCB need_key_cb_;
// The currently selected key system. Empty string means that no key system
// has been selected.
WebKit::WebString current_key_system_;
// Temporary for EME v0.1. In the future the init data type should be passed
// through GenerateKeyRequest() directly from WebKit.
std::string init_data_type_;
media::MediaPlayerHostMsg_ReadFromDemuxerAck_Params audio_params_;
media::MediaPlayerHostMsg_ReadFromDemuxerAck_Params video_params_;
bool seeking_;
base::TimeDelta last_seek_time_;
unsigned last_seek_request_id_;
bool key_added_;
std::string key_system_;
size_t access_unit_size_;
DISALLOW_COPY_AND_ASSIGN(MediaSourceDelegate);
};
} // namespace content
#endif // CONTENT_RENDERER_MEDIA_ANDROID_MEDIA_SOURCE_DELEGATE_H_
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