diff options
Diffstat (limited to 'chromium/media/mp2t/es_parser_adts.h')
-rw-r--r-- | chromium/media/mp2t/es_parser_adts.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/chromium/media/mp2t/es_parser_adts.h b/chromium/media/mp2t/es_parser_adts.h new file mode 100644 index 00000000000..fd0fe587c07 --- /dev/null +++ b/chromium/media/mp2t/es_parser_adts.h @@ -0,0 +1,81 @@ +// 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 MEDIA_MP2T_ES_PARSER_ADTS_H_ +#define MEDIA_MP2T_ES_PARSER_ADTS_H_ + +#include <list> +#include <utility> + +#include "base/callback.h" +#include "base/compiler_specific.h" +#include "base/memory/scoped_ptr.h" +#include "base/time/time.h" +#include "media/base/audio_decoder_config.h" +#include "media/base/byte_queue.h" +#include "media/mp2t/es_parser.h" + +namespace media { +class AudioTimestampHelper; +class BitReader; +class StreamParserBuffer; +} + +namespace media { +namespace mp2t { + +class EsParserAdts : public EsParser { + public: + typedef base::Callback<void(const AudioDecoderConfig&)> NewAudioConfigCB; + + EsParserAdts(const NewAudioConfigCB& new_audio_config_cb, + const EmitBufferCB& emit_buffer_cb); + virtual ~EsParserAdts(); + + // EsParser implementation. + virtual bool Parse(const uint8* buf, int size, + base::TimeDelta pts, + base::TimeDelta dts) OVERRIDE; + virtual void Flush() OVERRIDE; + virtual void Reset() OVERRIDE; + + private: + // Used to link a PTS with a byte position in the ES stream. + typedef std::pair<int, base::TimeDelta> EsPts; + typedef std::list<EsPts> EsPtsList; + + // Signal any audio configuration change (if any). + // Return false if the current audio config is not + // a supported ADTS audio config. + bool UpdateAudioConfiguration(const uint8* adts_header); + + // Discard some bytes from the ES stream. + void DiscardEs(int nbytes); + + // Callbacks: + // - to signal a new audio configuration, + // - to send ES buffers. + NewAudioConfigCB new_audio_config_cb_; + EmitBufferCB emit_buffer_cb_; + + // Bytes of the ES stream that have not been emitted yet. + ByteQueue es_byte_queue_; + + // List of PTS associated with a position in the ES stream. + EsPtsList pts_list_; + + // Interpolated PTS for frames that don't have one. + scoped_ptr<AudioTimestampHelper> audio_timestamp_helper_; + + // Last audio config. + AudioDecoderConfig last_audio_decoder_config_; + + DISALLOW_COPY_AND_ASSIGN(EsParserAdts); +}; + +} // namespace mp2t +} // namespace media + +#endif + |