73 lines
2.5 KiB
C++
73 lines
2.5 KiB
C++
// Copyright 2014 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#ifndef MEDIA_BASE_MEDIA_PARSER_H_
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#define MEDIA_BASE_MEDIA_PARSER_H_
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#include <string>
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#include <vector>
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#include "base/callback.h"
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#include "base/memory/ref_counted.h"
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#include "base/memory/scoped_ptr.h"
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#include "media/base/container_names.h"
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namespace media {
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class MediaSample;
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class StreamInfo;
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class MediaParser {
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public:
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MediaParser() {}
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virtual ~MediaParser() {}
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/// Called upon completion of parser initialization.
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/// @param stream_info contains the stream info of all the elementary streams
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/// within this file.
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typedef base::Callback<
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void(const std::vector<scoped_refptr<StreamInfo> >& stream_info)> InitCB;
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/// Called when a new media sample has been parsed.
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/// @param track_id is the track id of the new sample.
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/// @param media_sample is the new media sample.
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/// @return true if the sample is accepted, false if something was wrong
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/// with the sample and a parsing error should be signaled.
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typedef base::Callback<
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bool(uint32 track_id, const scoped_refptr<MediaSample>& media_sample)>
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NewSampleCB;
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/// Called when a new potentially encrypted stream has been parsed.
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/// @param init_data is the initialization data associated with the stream.
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/// @param init_data_size is the number of bytes of the initialization data.
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typedef base::Callback<void(MediaContainerName container_name,
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scoped_ptr<uint8[]> init_data,
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int init_data_size)> NeedKeyCB;
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/// Initialize the parser with necessary callbacks. Must be called before any
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/// data is passed to Parse().
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/// @param init_cb will be called once enough data has been parsed to
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/// determine the initial stream configurations.
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virtual void Init(const InitCB& init_cb,
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const NewSampleCB& new_sample_cb,
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const NeedKeyCB& need_key_cb) = 0;
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/// Flush data currently in the parser and put the parser in a state where it
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/// can receive data for a new seek point.
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virtual void Flush() = 0;
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/// Should be called when there is new data to parse.
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/// @return true if successful.
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virtual bool Parse(const uint8* buf, int size) = 0;
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private:
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DISALLOW_COPY_AND_ASSIGN(MediaParser);
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};
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} // namespace media
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#endif // MEDIA_BASE_MEDIA_PARSER_H_
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