71 lines
2.3 KiB
C
71 lines
2.3 KiB
C
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// Copyright (c) 2013 Google Inc. 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 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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// Indicates completion of parser initialization.
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// First parameter - Indicates initialization success. Set to true if
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// initialization was successful. False if an error
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// occurred.
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// Second parameter - A vector of all the elementary streams within this file.
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typedef base::Callback<void(bool, std::vector<scoped_refptr<StreamInfo> >&)>
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InitCB;
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// New stream sample have been parsed.
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// First parameter - The track id of the new sample.
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// Second parameter - The new media sample;
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// Return value - True indicates that the sample is accepted.
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// False if something was wrong with the sample and a parsing
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// error should be signaled.
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typedef base::Callback<
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bool(uint32 track_id, const scoped_refptr<MediaSample>&)>
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NewSampleCB;
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// A new potentially encrypted stream has been parsed.
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// First Parameter - Container name.
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// Second parameter - The initialization data associated with the stream.
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// Third parameter - Number of bytes of the initialization data.
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typedef base::Callback<void(MediaContainerName, scoped_ptr<uint8[]>, int)>
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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(). |init_cb| will be called once enough data has
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// been parsed to 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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// Called when there is new data to parse.
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//
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// Returns true if the parse succeeds.
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// TODO(kqyang): change to return Status.
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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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