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< li class = "navelem" > < a class = "el" href = "../../dir_39dc0668bd5a501998f94e8b4e546c71.html" > media< / a > < / li > < li class = "navelem" > < a class = "el" href = "../../dir_65f7acfa8cf3a5f1edc11faa2428b914.html" > formats< / a > < / li > < li class = "navelem" > < a class = "el" href = "../../dir_5039d854a18988ed1f1dbebc120ffbf7.html" > webm< / a > < / li > < / ul >
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< div class = "title" > webm_audio_client.cc< / div > < / div >
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< div class = "fragment" > < div class = "line" > < a name = "l00001" > < / a > < span class = "lineno" > 1< / span >   < span class = "comment" > // Copyright 2014 The Chromium Authors. All rights reserved.< / span > < / div >
< div class = "line" > < a name = "l00002" > < / a > < span class = "lineno" > 2< / span >   < span class = "comment" > // Use of this source code is governed by a BSD-style license that can be< / span > < / div >
< div class = "line" > < a name = "l00003" > < / a > < span class = "lineno" > 3< / span >   < span class = "comment" > // found in the LICENSE file.< / span > < / div >
< div class = "line" > < a name = "l00004" > < / a > < span class = "lineno" > 4< / span >   < / div >
< div class = "line" > < a name = "l00005" > < / a > < span class = "lineno" > 5< / span >   < span class = "preprocessor" > #include " packager/media/formats/webm/webm_audio_client.h" < / span > < / div >
< div class = "line" > < a name = "l00006" > < / a > < span class = "lineno" > 6< / span >   < / div >
< div class = "line" > < a name = "l00007" > < / a > < span class = "lineno" > 7< / span >   < span class = "preprocessor" > #include " packager/base/logging.h" < / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < span class = "preprocessor" > #include " packager/media/formats/webm/webm_constants.h" < / span > < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "comment" > // Timestamps are represented in double in WebM. Convert to uint64_t in us.< / span > < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "keyword" > const< / span > uint32_t kWebMTimeScale = 1000000u;< / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < / div >
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< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "keyword" > namespace < / span > shaka {< / div >
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< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "keyword" > namespace < / span > media {< / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   WebMAudioClient::WebMAudioClient() {< / div >
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< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < a class = "code" href = "../../d3/d7c/classshaka_1_1media_1_1WebMAudioClient.html#afd1a338848c52dc4db79d89ae13b6ea6" > Reset< / a > ();< / div >
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< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   }< / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   WebMAudioClient::~WebMAudioClient() {< / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   }< / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < / div >
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< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > < a class = "line" href = "../../d3/d7c/classshaka_1_1media_1_1WebMAudioClient.html#afd1a338848c52dc4db79d89ae13b6ea6" > 25< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "../../d3/d7c/classshaka_1_1media_1_1WebMAudioClient.html#afd1a338848c52dc4db79d89ae13b6ea6" > WebMAudioClient::Reset< / a > () {< / div >
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< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   channels_ = -1;< / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   samples_per_second_ = -1;< / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   output_samples_per_second_ = -1;< / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   }< / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < / div >
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< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > < a class = "line" href = "../../d3/d7c/classshaka_1_1media_1_1WebMAudioClient.html#a0fcbddd20199044f860331b3bd9ef3b8" > 31< / a > < / span >   std::shared_ptr< AudioStreamInfo> < a class = "code" href = "../../d3/d7c/classshaka_1_1media_1_1WebMAudioClient.html#a0fcbddd20199044f860331b3bd9ef3b8" > WebMAudioClient::GetAudioStreamInfo< / a > (< / div >
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< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   int64_t track_num,< / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < span class = "keyword" > const< / span > std::string& codec_id,< / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < span class = "keyword" > const< / span > std::vector< uint8_t> & codec_private,< / div >
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< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   int64_t seek_preroll,< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   int64_t codec_delay,< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < span class = "keyword" > const< / span > std::string& language,< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < span class = "keywordtype" > bool< / span > is_encrypted) {< / div >
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< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   Codec audio_codec = kUnknownCodec;< / div >
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< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   < span class = "keywordflow" > if< / span > (codec_id == < span class = "stringliteral" > " A_VORBIS" < / span > ) {< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   audio_codec = kCodecVorbis;< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (codec_id == < span class = "stringliteral" > " A_OPUS" < / span > ) {< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   audio_codec = kCodecOpus;< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Unsupported audio codec_id " < / span > < < codec_id;< / div >
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< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   < span class = "keywordflow" > return< / span > std::shared_ptr< AudioStreamInfo> ();< / div >
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< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   }< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < span class = "keywordflow" > if< / span > (samples_per_second_ < = 0)< / div >
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< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "keywordflow" > return< / span > std::shared_ptr< AudioStreamInfo> ();< / div >
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< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   < / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   < span class = "comment" > // Set channel layout default if a Channels element was not present.< / span > < / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < span class = "keywordflow" > if< / span > (channels_ == -1)< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   channels_ = 1;< / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   uint32_t sampling_frequency = samples_per_second_;< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "comment" > // Always use 48kHz for OPUS. See the " Input Sample Rate" section of the< / span > < / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < span class = "comment" > // spec: http://tools.ietf.org/html/draft-terriberry-oggopus-01#page-11< / span > < / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   < span class = "keywordflow" > if< / span > (audio_codec == kCodecOpus) {< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   sampling_frequency = 48000;< / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   }< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   < / div >
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< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < span class = "keyword" > const< / span > uint8_t* codec_config = NULL;< / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   < span class = "keywordtype" > size_t< / span > codec_config_size = 0;< / div >
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< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   < span class = "keywordflow" > if< / span > (codec_private.size() > 0) {< / div >
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< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   codec_config = & codec_private[0];< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   codec_config_size = codec_private.size();< / div >
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< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   }< / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   < / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   < span class = "keyword" > const< / span > uint8_t kSampleSizeInBits = 16u;< / div >
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< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   < span class = "keywordflow" > return< / span > std::make_shared< AudioStreamInfo> (< / div >
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< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   track_num, kWebMTimeScale, 0, audio_codec,< / div >
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< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   < a class = "code" href = "../../da/d4e/classshaka_1_1media_1_1AudioStreamInfo.html#aee79e7aa61b741bb96f451c6de1c9d42" > AudioStreamInfo::GetCodecString< / a > (audio_codec, 0), codec_config,< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   codec_config_size, kSampleSizeInBits, channels_, sampling_frequency,< / div >
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< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   seek_preroll < 0 ? 0 : seek_preroll, codec_delay < 0 ? 0 : codec_delay, 0,< / div >
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< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   0, language, is_encrypted);< / div >
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< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   }< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   < / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   < span class = "keywordtype" > bool< / span > WebMAudioClient::OnUInt(< span class = "keywordtype" > int< / span > < span class = "keywordtype" > id< / span > , int64_t val) {< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   < span class = "keywordflow" > if< / span > (< span class = "keywordtype" > id< / span > == kWebMIdChannels) {< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   < span class = "keywordflow" > if< / span > (channels_ != -1) {< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Multiple values for id " < / span > < < std::hex < < < span class = "keywordtype" > id< / span > < / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   < < < span class = "stringliteral" > " specified. (" < / span > < < channels_ < < < span class = "stringliteral" > " and " < / span > < < val < < < span class = "stringliteral" > " )" < / span > ;< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   }< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   < / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   channels_ = val;< / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   }< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   }< / div >
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< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < / div >
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< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < span class = "keywordtype" > bool< / span > WebMAudioClient::OnFloat(< span class = "keywordtype" > int< / span > < span class = "keywordtype" > id< / span > , < span class = "keywordtype" > double< / span > val) {< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < span class = "keywordtype" > double< / span > * dst = NULL;< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   < / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < span class = "keywordflow" > switch< / span > (< span class = "keywordtype" > id< / span > ) {< / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   < span class = "keywordflow" > case< / span > kWebMIdSamplingFrequency:< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   dst = & samples_per_second_;< / div >
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< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   < span class = "keywordflow" > break< / span > ;< / div >
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< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   < span class = "keywordflow" > case< / span > kWebMIdOutputSamplingFrequency:< / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   dst = & output_samples_per_second_;< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   < span class = "keywordflow" > default< / span > :< / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   }< / div >
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< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   < / div >
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< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   < span class = "keywordflow" > if< / span > (val < = 0)< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   < / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   < span class = "keywordflow" > if< / span > (*dst != -1) {< / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Multiple values for id " < / span > < < std::hex < < < span class = "keywordtype" > id< / span > < < < span class = "stringliteral" > " specified (" < / span > < / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   < < *dst < < < span class = "stringliteral" > " and " < / span > < < val < < < span class = "stringliteral" > " )" < / span > ;< / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   }< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   < / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   *dst = val;< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   }< / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   < / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   } < span class = "comment" > // namespace media< / span > < / div >
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< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   } < span class = "comment" > // namespace shaka< / span > < / div >
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< div class = "ttc" id = "classshaka_1_1media_1_1WebMAudioClient_html_a0fcbddd20199044f860331b3bd9ef3b8" > < div class = "ttname" > < a href = "../../d3/d7c/classshaka_1_1media_1_1WebMAudioClient.html#a0fcbddd20199044f860331b3bd9ef3b8" > shaka::media::WebMAudioClient::GetAudioStreamInfo< / a > < / div > < div class = "ttdeci" > std::shared_ptr< AudioStreamInfo > GetAudioStreamInfo(int64_t track_num, const std::string & codec_id, const std::vector< uint8_t > & codec_private, int64_t seek_preroll, int64_t codec_delay, const std::string & language, bool is_encrypted)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d1/d8e/webm__audio__client_8cc_source.html#l00031" > webm_audio_client.cc:31< / a > < / div > < / div >
2016-08-18 21:18:15 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1AudioStreamInfo_html_aee79e7aa61b741bb96f451c6de1c9d42" > < div class = "ttname" > < a href = "../../da/d4e/classshaka_1_1media_1_1AudioStreamInfo.html#aee79e7aa61b741bb96f451c6de1c9d42" > shaka::media::AudioStreamInfo::GetCodecString< / a > < / div > < div class = "ttdeci" > static std::string GetCodecString(Codec codec, uint8_t audio_object_type)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../da/d04/audio__stream__info_8cc_source.html#l00095" > audio_stream_info.cc:95< / a > < / div > < / div >
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< div class = "ttc" id = "classshaka_1_1media_1_1WebMAudioClient_html_afd1a338848c52dc4db79d89ae13b6ea6" > < div class = "ttname" > < a href = "../../d3/d7c/classshaka_1_1media_1_1WebMAudioClient.html#afd1a338848c52dc4db79d89ae13b6ea6" > shaka::media::WebMAudioClient::Reset< / a > < / div > < div class = "ttdeci" > void Reset()< / div > < div class = "ttdoc" > Reset this object' s state so it can process a new audio track element. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d1/d8e/webm__audio__client_8cc_source.html#l00025" > webm_audio_client.cc:25< / a > < / div > < / div >
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< / div > <!-- fragment --> < / div > <!-- contents -->
<!-- start footer part -->
< hr class = "footer" / > < address class = "footer" > < small >
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Generated on Thu Mar 30 2017 23:38:51 for DASH Media Packaging SDK by   < a href = "http://www.doxygen.org/index.html" >
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< img class = "footer" src = "../../doxygen.png" alt = "doxygen" / >
< / a > 1.8.6
< / small > < / address >
< / body >
< / html >
