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< title > DASH Media Packaging SDK: media/codecs/es_descriptor.cc Source File< / title >
2015-10-16 00:33:37 +00:00
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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_0494b8c96e3190a776d2b97ade9c8ddf.html" > codecs< / a > < / li > < / ul >
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< div class = "title" > es_descriptor.cc< / div > < / div >
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< div class = "contents" >
< div class = "fragment" > < div class = "line" > < a name = "l00001" > < / a > < span class = "lineno" > 1< / span >   < span class = "comment" > // Copyright (c) 2012 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 >
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< div class = "line" > < a name = "l00005" > < / a > < span class = "lineno" > 5< / span >   < span class = "preprocessor" > #include " packager/media/codecs/es_descriptor.h" < / span > < / div >
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< 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/media/base/bit_reader.h" < / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < span class = "preprocessor" > #include " packager/media/base/buffer_writer.h" < / span > < / div >
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< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < span class = "preprocessor" > #include " packager/media/base/rcheck.h" < / span > < / div >
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< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < / div >
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< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "keyword" > namespace < / span > shaka {< / div >
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< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "keyword" > namespace < / span > media {< / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "comment" > // ISO/IEC 14496-1:2004 Section 7.2.6.6 Table 6: StreamType values.< / span > < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "keyword" > enum< / span > StreamType {< / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   kForbiddenStreamType = 0x00,< / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   kObjectDescriptorStreamType = 0x01,< / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   kClockReferenceStreamType = 0x02,< / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   kSceneDescriptionStreamType = 0x03,< / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   kVisualStreamType = 0x04,< / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   kAudioStreamType = 0x05,< / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   kMPEG7StreamType = 0x06,< / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   kIPMPStreamType = 0x07,< / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   kObjectContentInfoStreamType = 0x08,< / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   kMPEGJStreamType = 0x09,< / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   kInteractionStream = 0x0A,< / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   kIPMPToolStreamType = 0x0B,< / 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 >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < span class = "comment" > // ISO/IEC 14496-1:2004 Section 7.3.2.3 Table 12: ISO SL Config Descriptor.< / span > < / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < span class = "keyword" > enum< / span > SLPredefinedTags {< / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   kSLPredefinedNull = 0x01,< / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   kSLPredefinedMP4 = 0x02,< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   };< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < span class = "comment" > // The elementary stream size is specific by up to 4 bytes.< / span > < / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < span class = "comment" > // The MSB of a byte indicates if there are more bytes for the size.< / span > < / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < span class = "keywordtype" > bool< / span > ReadESSize(BitReader* reader, uint32_t* size) {< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   uint8_t msb;< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   uint8_t byte;< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   < / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   *size = 0;< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   < / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < 4; ++i) {< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   RCHECK(reader-> ReadBits(1, & msb));< / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   RCHECK(reader-> ReadBits(7, & byte));< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   *size = (*size < < 7) + byte;< / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "keywordflow" > if< / span > (msb == 0)< / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   }< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / 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 >   < / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "comment" > // Descryptor Header Size: 1 byte tag and 1 byte size (we don' t support< / span > < / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < span class = "comment" > // multi-bytes size for now).< / span > < / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > size_t< / span > kHeaderSize = 2;< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > size_t< / span > kMaxDecoderSpecificInfoSize = 64;< / div >
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< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < span class = "keyword" > const< / span > uint32_t kUnknownBitrate = 0;< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   < / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   < / div >
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< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   ESDescriptor::ESDescriptor()< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   : esid_(0),< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   object_type_(kForbidden),< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   max_bitrate_(kUnknownBitrate),< / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   avg_bitrate_(kUnknownBitrate) {}< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   < / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   ESDescriptor::~ESDescriptor() {}< / div >
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< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   < / div >
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< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   < span class = "keywordtype" > bool< / span > ESDescriptor::Parse(< span class = "keyword" > const< / span > std::vector< uint8_t> & data) {< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   BitReader reader(& data[0], data.size());< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   uint8_t tag;< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   uint32_t size;< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   uint8_t stream_dependency_flag;< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   uint8_t url_flag;< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   uint8_t ocr_stream_flag;< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   uint16_t dummy;< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   < / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   RCHECK(reader.ReadBits(8, & tag));< / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   RCHECK(tag == kESDescrTag);< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   RCHECK(ReadESSize(& reader, & size));< / 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 >   RCHECK(reader.ReadBits(16, & esid_)); < span class = "comment" > // ES_ID< / span > < / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   RCHECK(reader.ReadBits(1, & stream_dependency_flag));< / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   RCHECK(reader.ReadBits(1, & url_flag));< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   RCHECK(!url_flag); < span class = "comment" > // We don' t support url flag< / span > < / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   RCHECK(reader.ReadBits(1, & ocr_stream_flag));< / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   RCHECK(reader.ReadBits(5, & dummy)); < span class = "comment" > // streamPriority< / span > < / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < span class = "keywordflow" > if< / span > (stream_dependency_flag)< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   RCHECK(reader.ReadBits(16, & dummy)); < span class = "comment" > // dependsOn_ES_ID< / span > < / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < span class = "keywordflow" > if< / span > (ocr_stream_flag)< / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   RCHECK(reader.ReadBits(16, & dummy)); < span class = "comment" > // OCR_ES_Id< / span > < / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   RCHECK(ParseDecoderConfigDescriptor(& reader));< / div >
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< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   < / div >
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< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   }< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   < / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   < span class = "keywordtype" > bool< / span > ESDescriptor::ParseDecoderConfigDescriptor(BitReader* reader) {< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   uint8_t tag;< / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   uint32_t size;< / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   uint32_t dummy;< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   < / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   RCHECK(reader-> ReadBits(8, & tag));< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   RCHECK(tag == kDecoderConfigDescrTag);< / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   RCHECK(ReadESSize(reader, & size));< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   < / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   RCHECK(reader-> ReadBits(8, & object_type_));< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   RCHECK(reader-> ReadBits(32, & dummy));< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   RCHECK(reader-> ReadBits(32, & max_bitrate_));< / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   RCHECK(reader-> ReadBits(32, & avg_bitrate_));< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   RCHECK(ParseDecoderSpecificInfo(reader));< / 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 >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   }< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   < / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < span class = "keywordtype" > bool< / span > ESDescriptor::ParseDecoderSpecificInfo(BitReader* reader) {< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   DCHECK(reader);< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   uint8_t tag;< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   uint32_t size;< / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   < / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   RCHECK(reader-> ReadBits(8, & tag));< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   RCHECK(tag == kDecoderSpecificInfoTag);< / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   RCHECK(ReadESSize(reader, & size));< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   < / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   decoder_specific_info_.resize(size);< / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   < span class = "keywordflow" > for< / span > (uint32_t i = 0; i < size; ++i)< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   RCHECK(reader-> ReadBits(8, & decoder_specific_info_[i]));< / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   }< / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   < / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   < span class = "keywordtype" > void< / span > ESDescriptor::Write(BufferWriter* writer)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   DCHECK(writer);< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   CHECK_LT(decoder_specific_info_.size(), kMaxDecoderSpecificInfoSize);< / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   < / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   < span class = "keyword" > const< / span > std::vector< uint8_t> kEmptyDecodingBufferSize(3, 0);< / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < span class = "keyword" > const< / span > uint8_t kNoEsFlags = 0;< / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   < / div >
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< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < span class = "keyword" > const< / span > uint8_t decoder_specific_info_size =< / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   < span class = "keyword" > static_cast< < / span > uint8_t< span class = "keyword" > > < / span > (decoder_specific_info_.size());< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   < / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   < span class = "comment" > // 6 bit stream type. The last bit is reserved with 1.< / span > < / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   < span class = "keyword" > const< / span > uint8_t stream_type = (kAudioStreamType < < 2) | 1;< / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   < span class = "keyword" > const< / span > uint8_t decoder_config_size =< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   < span class = "keyword" > static_cast< < / span > uint8_t< span class = "keyword" > > < / span > (decoder_specific_info_size + kHeaderSize +< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   < span class = "keyword" > sizeof< / span > (uint8_t) + < span class = "comment" > // object_type_.< / span > < / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   < span class = "keyword" > sizeof< / span > (stream_type) +< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   kEmptyDecodingBufferSize.size() +< / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   < span class = "keyword" > sizeof< / span > (kUnknownBitrate) * 2);< / div >
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   < / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   < span class = "keyword" > const< / span > uint8_t sl_config_size = < span class = "keyword" > sizeof< / span > (uint8_t); < span class = "comment" > // predefined.< / span > < / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   < span class = "keyword" > const< / span > uint8_t es_size = decoder_config_size + kHeaderSize + sl_config_size +< / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   kHeaderSize + < span class = "keyword" > sizeof< / span > (esid_) + < span class = "keyword" > sizeof< / span > (kNoEsFlags);< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   < / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   writer-> AppendInt(static_cast< uint8_t> (kESDescrTag));< / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   writer-> AppendInt(es_size);< / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   writer-> AppendInt(esid_);< / div >
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   writer-> AppendInt(kNoEsFlags);< / div >
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   < / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   writer-> AppendInt(static_cast< uint8_t> (kDecoderConfigDescrTag));< / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   writer-> AppendInt(decoder_config_size);< / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   writer-> AppendInt(static_cast< uint8_t> (object_type_));< / div >
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   writer-> AppendInt(stream_type);< / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   writer-> AppendVector(kEmptyDecodingBufferSize);< / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   writer-> AppendInt(max_bitrate_);< / div >
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   writer-> AppendInt(avg_bitrate_);< / div >
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > 171< / span >   < / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   writer-> AppendInt(static_cast< uint8_t> (kDecoderSpecificInfoTag));< / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   writer-> AppendInt(decoder_specific_info_size);< / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   writer-> AppendVector(decoder_specific_info_);< / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   < / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   writer-> AppendInt(static_cast< uint8_t> (kSLConfigTag));< / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   writer-> AppendInt(sl_config_size);< / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   writer-> AppendInt(static_cast< uint8_t> (kSLPredefinedMP4));< / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   }< / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   < / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   < span class = "keywordtype" > size_t< / span > ESDescriptor::ComputeSize()< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   < span class = "comment" > // A bit magical. Refer to ESDescriptor::Write for details.< / span > < / div >
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   < span class = "keyword" > const< / span > uint8_t decoder_specific_info_size =< / div >
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   < span class = "keyword" > static_cast< < / span > uint8_t< span class = "keyword" > > < / span > (decoder_specific_info_.size());< / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   < span class = "keyword" > const< / span > uint8_t decoder_config_size = decoder_specific_info_size + kHeaderSize +< / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   < span class = "keyword" > sizeof< / span > (uint8_t) * 5 +< / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   < span class = "keyword" > sizeof< / span > (uint32_t) * 2;< / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   < span class = "keyword" > const< / span > uint8_t sl_config_size = < span class = "keyword" > sizeof< / span > (uint8_t);< / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > 189< / span >   < span class = "keyword" > const< / span > uint8_t es_size = decoder_config_size + kHeaderSize + sl_config_size +< / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   kHeaderSize + < span class = "keyword" > sizeof< / span > (esid_) + < span class = "keyword" > sizeof< / span > (uint8_t);< / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   < span class = "keywordflow" > return< / span > es_size + kHeaderSize;< / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   }< / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   < / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   } < span class = "comment" > // namespace media< / span > < / div >
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   } < span class = "comment" > // namespace shaka< / span > < / div >
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