57 lines
1.8 KiB
C++
57 lines
1.8 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 MEDIA_FORMATS_WEBM_WEBM_AUDIO_CLIENT_H_
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#define MEDIA_FORMATS_WEBM_WEBM_AUDIO_CLIENT_H_
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#include <string>
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#include <vector>
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#include "packager/base/memory/scoped_ptr.h"
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#include "packager/media/base/audio_stream_info.h"
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#include "packager/media/formats/webm/webm_parser.h"
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namespace edash_packager {
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namespace media {
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class AudioDecoderConfig;
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/// Helper class used to parse an Audio element inside a TrackEntry element.
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class WebMAudioClient : public WebMParserClient {
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public:
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WebMAudioClient();
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~WebMAudioClient() override;
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/// Reset this object's state so it can process a new audio track element.
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void Reset();
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/// Create an AudioStreamInfo with the data in |track_num|, |codec_id|,
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/// |codec_private|, |is_encrypted| and the fields parsed from the last audio
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/// track element this object was used to parse.
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/// @return An AudioStreamInfo scoped_refptr if successful.
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/// @return An empty scoped_refptr if there was unexpected values in the
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/// provided parameters or audio track element fields.
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scoped_refptr<AudioStreamInfo> GetAudioStreamInfo(
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int64_t track_num,
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const std::string& codec_id,
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const std::vector<uint8_t>& codec_private,
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const std::string& language,
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bool is_encrypted);
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private:
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// WebMParserClient implementation.
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bool OnUInt(int id, int64_t val) override;
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bool OnFloat(int id, double val) override;
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int channels_;
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double samples_per_second_;
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double output_samples_per_second_;
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DISALLOW_COPY_AND_ASSIGN(WebMAudioClient);
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};
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} // namespace media
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} // namespace edash_packager
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#endif // MEDIA_FORMATS_WEBM_WEBM_AUDIO_CLIENT_H_
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