53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
// Copyright (c) 2013 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_WEBM_WEBM_AUDIO_CLIENT_H_
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#define MEDIA_WEBM_WEBM_AUDIO_CLIENT_H_
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#include <string>
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#include <vector>
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#include "media/base/media_log.h"
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#include "media/webm/webm_parser.h"
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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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explicit WebMAudioClient(const LogCB& log_cb);
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virtual ~WebMAudioClient();
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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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// Initialize |config| with the data in |codec_id|, |codec_private|,
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// |is_encrypted| and the fields parsed from the last audio track element this
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// object was used to parse.
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// Returns true if |config| was successfully initialized.
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// Returns false if there was unexpected values in the provided parameters or
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// audio track element fields.
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bool InitializeConfig(const std::string& codec_id,
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const std::vector<uint8>& codec_private,
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bool is_encrypted,
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AudioDecoderConfig* config);
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private:
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// WebMParserClient implementation.
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virtual bool OnUInt(int id, int64 val) OVERRIDE;
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virtual bool OnFloat(int id, double val) OVERRIDE;
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LogCB log_cb_;
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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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#endif // MEDIA_WEBM_WEBM_AUDIO_CLIENT_H_
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