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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 MEDIA_WEBM_WEBM_TRACKS_PARSER_H_
#define MEDIA_WEBM_WEBM_TRACKS_PARSER_H_
#include <set>
#include <string>
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "media/base/media_log.h"
#include "media/webm/webm_content_encodings_client.h"
#include "media/webm/webm_parser.h"
namespace media {
// Parser for WebM Tracks element.
class WebMTracksParser : public WebMParserClient {
public:
explicit WebMTracksParser(const LogCB& log_cb);
virtual ~WebMTracksParser();
// Parses a WebM Tracks 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);
int64 audio_track_num() const { return audio_track_num_; }
int64 video_track_num() const { return video_track_num_; }
const std::set<int64>& ignored_tracks() const { return ignored_tracks_; }
const std::string& audio_encryption_key_id() const {
return audio_encryption_key_id_;
}
const std::string& video_encryption_key_id() const {
return video_encryption_key_id_;
}
const std::set<int>& text_tracks() const {
return text_tracks_;
}
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 OnFloat(int id, double val) OVERRIDE;
virtual bool OnBinary(int id, const uint8* data, int size) OVERRIDE;
virtual bool OnString(int id, const std::string& str) OVERRIDE;
int64 track_type_;
int64 track_num_;
scoped_ptr<WebMContentEncodingsClient> track_content_encodings_client_;
TextKind text_track_kind_;
int64 audio_track_num_;
int64 video_track_num_;
std::set<int> text_tracks_;
std::set<int64> ignored_tracks_;
std::string audio_encryption_key_id_;
std::string video_encryption_key_id_;
LogCB log_cb_;
DISALLOW_COPY_AND_ASSIGN(WebMTracksParser);
};
} // namespace media
#endif // MEDIA_WEBM_WEBM_TRACKS_PARSER_H_
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