87 lines
2.5 KiB
C++
87 lines
2.5 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef PACKAGER_MEDIA_FORMATS_MP2T_ES_PARSER_AUDIO_H_
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#define PACKAGER_MEDIA_FORMATS_MP2T_ES_PARSER_AUDIO_H_
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#include <list>
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#include <memory>
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#include <utility>
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#include "packager/base/callback.h"
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#include "packager/base/compiler_specific.h"
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#include "packager/media/base/audio_stream_info.h"
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#include "packager/media/base/byte_queue.h"
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#include "packager/media/formats/mp2t/es_parser.h"
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#include "packager/media/formats/mp2t/ts_stream_type.h"
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namespace shaka {
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namespace media {
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class AudioTimestampHelper;
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class BitReader;
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namespace mp2t {
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class AudioHeader;
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class EsParserAudio : public EsParser {
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public:
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EsParserAudio(uint32_t pid,
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TsStreamType stream_type,
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const NewStreamInfoCB& new_stream_info_cb,
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const EmitSampleCB& emit_sample_cb,
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bool sbr_in_mimetype);
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~EsParserAudio() override;
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// EsParser implementation.
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bool Parse(const uint8_t* buf, int size, int64_t pts, int64_t dts) override;
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bool Flush() override;
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void Reset() override;
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private:
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EsParserAudio(const EsParserAudio&) = delete;
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EsParserAudio& operator=(const EsParserAudio&) = delete;
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// Used to link a PTS with a byte position in the ES stream.
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typedef std::pair<int, int64_t> EsPts;
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typedef std::list<EsPts> EsPtsList;
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// Signal any audio configuration change (if any).
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// Return false if the current audio config is not a supported audio config.
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bool UpdateAudioConfiguration(const AudioHeader& audio_header);
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// Discard some bytes from the ES stream.
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void DiscardEs(int nbytes);
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const TsStreamType stream_type_;
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std::unique_ptr<AudioHeader> audio_header_;
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// Callbacks:
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// - to signal a new audio configuration,
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// - to send ES buffers.
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NewStreamInfoCB new_stream_info_cb_;
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EmitSampleCB emit_sample_cb_;
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// True when AAC SBR extension is signalled in the mimetype
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// (mp4a.40.5 in the codecs parameter).
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bool sbr_in_mimetype_;
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// Bytes of the ES stream that have not been emitted yet.
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ByteQueue es_byte_queue_;
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// List of PTS associated with a position in the ES stream.
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EsPtsList pts_list_;
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// Interpolated PTS for frames that don't have one.
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std::unique_ptr<AudioTimestampHelper> audio_timestamp_helper_;
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std::shared_ptr<StreamInfo> last_audio_decoder_config_;
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};
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} // namespace mp2t
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} // namespace media
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} // namespace shaka
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#endif // PACKAGER_MEDIA_FORMATS_MP2T_ES_PARSER_AUDIO_H_
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