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// Copyright (c) 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.
#ifndef MEDIA_WEBM_WEBM_CLUSTER_PARSER_H_
#define MEDIA_WEBM_WEBM_CLUSTER_PARSER_H_
#include <deque>
#include <string>
#include "base/memory/scoped_ptr.h"
#include "media/base/buffers.h"
#include "media/webm/webm_parser.h"
namespace media {
class WebMClusterParser : public WebMParserClient {
public:
typedef std::deque<scoped_refptr<Buffer> > BufferQueue;
WebMClusterParser(int64 timecode_scale,
int audio_track_num,
base::TimeDelta audio_default_duration,
int video_track_num,
base::TimeDelta video_default_duration);
virtual ~WebMClusterParser();
// Resets the parser state so it can accept a new cluster.
void Reset();
// Parses a WebM cluster element in |buf|.
//
// Returns -1 if the parse fails.
// Returns 0 if more data is needed.
// Returns the number of bytes parsed on success.
int Parse(const uint8* buf, int size);
const BufferQueue& audio_buffers() const { return audio_buffers_; }
const BufferQueue& video_buffers() const { return video_buffers_; }
private:
// WebMParserClient methods.
virtual WebMParserClient* OnListStart(int id) OVERRIDE;
virtual bool OnListEnd(int id) OVERRIDE;
virtual bool OnUInt(int id, int64 val) OVERRIDE;
virtual bool OnSimpleBlock(int track_num, int timecode, int flags,
const uint8* data, int size) OVERRIDE;
double timecode_multiplier_; // Multiplier used to convert timecodes into
// microseconds.
int audio_track_num_;
base::TimeDelta audio_default_duration_;
int video_track_num_;
base::TimeDelta video_default_duration_;
WebMListParser parser_;
int64 last_block_timecode_;
int64 cluster_timecode_;
BufferQueue audio_buffers_;
BufferQueue video_buffers_;
DISALLOW_IMPLICIT_CONSTRUCTORS(WebMClusterParser);
};
} // namespace media
#endif // MEDIA_WEBM_WEBM_CLUSTER_PARSER_H_
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