1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef MEDIA_FORMATS_WEBM_WEBM_AUDIO_CLIENT_H_
6 #define MEDIA_FORMATS_WEBM_WEBM_AUDIO_CLIENT_H_
11 #include "media/base/media_log.h"
12 #include "media/formats/webm/webm_parser.h"
15 class AudioDecoderConfig;
17 // Helper class used to parse an Audio element inside a TrackEntry element.
18 class WebMAudioClient : public WebMParserClient {
20 explicit WebMAudioClient(const LogCB& log_cb);
21 ~WebMAudioClient() override;
23 // Reset this object's state so it can process a new audio track element.
26 // Initialize |config| with the data in |codec_id|, |codec_private|,
27 // |is_encrypted| and the fields parsed from the last audio track element this
28 // object was used to parse.
29 // Returns true if |config| was successfully initialized.
30 // Returns false if there was unexpected values in the provided parameters or
31 // audio track element fields.
32 bool InitializeConfig(const std::string& codec_id,
33 const std::vector<uint8>& codec_private,
34 const int64 seek_preroll,
35 const int64 codec_delay,
37 AudioDecoderConfig* config);
40 // WebMParserClient implementation.
41 bool OnUInt(int id, int64 val) override;
42 bool OnFloat(int id, double val) override;
46 double samples_per_second_;
47 double output_samples_per_second_;
49 DISALLOW_COPY_AND_ASSIGN(WebMAudioClient);
54 #endif // MEDIA_FORMATS_WEBM_WEBM_AUDIO_CLIENT_H_