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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_f7dcbe7025bbacfc4b9a7dff6ad41d72.html" > mp2t< / a > < / li > < / ul >
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< div class = "title" > es_parser_h264.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/mp2t/es_parser_h264.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 < stdint.h> < / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < span class = "preprocessor" > #include " packager/base/logging.h" < / span > < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "preprocessor" > #include " packager/base/numerics/safe_conversions.h" < / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "preprocessor" > #include " packager/media/base/media_sample.h" < / span > < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "preprocessor" > #include " packager/media/base/offset_byte_queue.h" < / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "preprocessor" > #include " packager/media/base/timestamp.h" < / span > < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "preprocessor" > #include " packager/media/base/video_stream_info.h" < / span > < / div >
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< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "preprocessor" > #include " packager/media/filters/avc_decoder_configuration.h" < / span > < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "preprocessor" > #include " packager/media/filters/h264_byte_to_unit_stream_converter.h" < / span > < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "preprocessor" > #include " packager/media/filters/h264_parser.h" < / span > < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "preprocessor" > #include " packager/media/formats/mp2t/mp2t_common.h" < / span > < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < span class = "keyword" > namespace < / span > edash_packager {< / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "keyword" > namespace < / span > media {< / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "keyword" > namespace < / span > mp2t {< / 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 >   < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < span class = "comment" > // An AUD NALU is at least 4 bytes:< / span > < / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < span class = "comment" > // 3 bytes for the start code + 1 byte for the NALU type.< / span > < / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > kMinAUDSize = 4;< / 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 >   } < span class = "comment" > // anonymous namespace< / span > < / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   EsParserH264::EsParserH264(uint32_t pid,< / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < span class = "keyword" > const< / span > NewStreamInfoCB& new_stream_info_cb,< / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < span class = "keyword" > const< / span > EmitSampleCB& emit_sample_cb)< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   : EsParser(pid),< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   new_stream_info_cb_(new_stream_info_cb),< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   emit_sample_cb_(emit_sample_cb),< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   es_queue_(new media::OffsetByteQueue()),< / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   h264_parser_(new H264Parser()),< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   current_access_unit_pos_(0),< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   next_access_unit_pos_(0),< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   stream_converter_(new H264ByteToUnitStreamConverter),< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   decoder_config_check_pending_(false),< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   pending_sample_duration_(0),< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   waiting_for_key_frame_(true) {< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   }< / div >
< 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 >   EsParserH264::~EsParserH264() {< / 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 >   < / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   < span class = "keywordtype" > bool< / span > EsParserH264::Parse(< span class = "keyword" > const< / span > uint8_t* buf,< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   < span class = "keywordtype" > int< / span > size,< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   int64_t pts,< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   int64_t dts) {< / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < span class = "comment" > // Note: Parse is invoked each time a PES packet has been reassembled.< / span > < / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < span class = "comment" > // Unfortunately, a PES packet does not necessarily map< / span > < / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "comment" > // to an h264 access unit, although the HLS recommendation is to use one PES< / span > < / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < span class = "comment" > // for each access unit (but this is just a recommendation and some streams< / span > < / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   < span class = "comment" > // do not comply with this recommendation).< / span > < / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < span class = "comment" > // HLS recommendation: " In AVC video, you should have both a DTS and a< / span > < / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   < span class = "comment" > // PTS in each PES header" .< / span > < / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < span class = "comment" > // However, some streams do not comply with this recommendation.< / span > < / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   DVLOG_IF(1, pts == kNoTimestamp) < < < span class = "stringliteral" > " Each video PES should have a PTS" < / span > ;< / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   < span class = "keywordflow" > if< / span > (pts != kNoTimestamp) {< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   TimingDesc timing_desc;< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   timing_desc.pts = pts;< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   timing_desc.dts = (dts != kNoTimestamp) ? dts : pts;< / 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 = "comment" > // Link the end of the byte queue with the incoming timing descriptor.< / span > < / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   timing_desc_list_.push_back(< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   std::pair< int64_t, TimingDesc> (es_queue_-> tail(), timing_desc));< / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   }< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   < / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   < span class = "comment" > // Add the incoming bytes to the ES queue.< / span > < / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   es_queue_-> Push(buf, size);< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   < span class = "keywordflow" > return< / span > ParseInternal();< / 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 >   < / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   < span class = "keywordtype" > void< / span > EsParserH264::Flush() {< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   DVLOG(1) < < < span class = "stringliteral" > " EsParserH264::Flush" < / span > ;< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   < / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   < span class = "keywordflow" > if< / span > (FindAUD(& current_access_unit_pos_)) {< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   < span class = "comment" > // Simulate an additional AUD to force emitting the last access unit< / span > < / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   < span class = "comment" > // which is assumed to be complete at this point.< / span > < / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   uint8_t aud[] = {0x00, 0x00, 0x01, 0x09};< / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   es_queue_-> Push(aud, < span class = "keyword" > sizeof< / span > (aud));< / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   ParseInternal();< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   }< / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   < / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < span class = "keywordflow" > if< / span > (pending_sample_) {< / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < span class = "comment" > // Flush pending sample.< / span > < / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   DCHECK(pending_sample_duration_);< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   pending_sample_-> set_duration(pending_sample_duration_);< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   emit_sample_cb_.Run(pid(), pending_sample_);< / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   pending_sample_ = scoped_refptr< MediaSample> ();< / 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 >   }< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   < / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   < span class = "keywordtype" > void< / span > EsParserH264::Reset() {< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   DVLOG(1) < < < span class = "stringliteral" > " EsParserH264::Reset" < / span > ;< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   es_queue_.reset(< span class = "keyword" > new< / span > media::OffsetByteQueue());< / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   h264_parser_.reset(< span class = "keyword" > new< / span > H264Parser());< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   current_access_unit_pos_ = 0;< / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   next_access_unit_pos_ = 0;< / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   timing_desc_list_.clear();< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   last_video_decoder_config_ = scoped_refptr< StreamInfo> ();< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   decoder_config_check_pending_ = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   pending_sample_ = scoped_refptr< MediaSample> ();< / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   pending_sample_duration_ = 0;< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   waiting_for_key_frame_ = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / 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 >   < span class = "keywordtype" > bool< / span > EsParserH264::FindAUD(int64_t* stream_pos) {< / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   < span class = "keywordflow" > while< / span > (< span class = "keyword" > true< / span > ) {< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   < span class = "keyword" > const< / span > uint8_t* es;< / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   < span class = "keywordtype" > int< / span > size;< / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   es_queue_-> PeekAt(*stream_pos, & es, & size);< / 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 >   < span class = "comment" > // Find a start code and move the stream to the start code parser position.< / span > < / div >
2016-02-17 01:09:50 +00:00
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   uint64_t start_code_offset;< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   uint8_t start_code_size;< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   < span class = "keywordtype" > bool< / span > start_code_found = NaluReader::FindStartCode(< / div >
2015-10-28 00:32:32 +00:00
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   es, size, & start_code_offset, & start_code_size);< / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   *stream_pos += start_code_offset;< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   < / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   < span class = "comment" > // No H264 start code found or NALU type not available yet.< / span > < / div >
2016-02-17 01:09:50 +00:00
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   < span class = "keywordflow" > if< / span > (!start_code_found ||< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   start_code_offset + start_code_size > = static_cast< uint64_t> (size)) {< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   }< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   < / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   < span class = "comment" > // Exit the parser loop when an AUD is found.< / span > < / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   < span class = "comment" > // Note: NALU header for an AUD:< / span > < / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   < span class = "comment" > // - ref_idc must be 0< / span > < / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   < span class = "comment" > // - type must be Nalu::H264_AUD< / span > < / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   < span class = "keywordflow" > if< / span > (es[start_code_offset + start_code_size] == Nalu::H264_AUD)< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   < span class = "keywordflow" > break< / span > ;< / 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 = "comment" > // The current NALU is not an AUD, skip the start code< / span > < / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < span class = "comment" > // and continue parsing the stream.< / span > < / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   *stream_pos += start_code_size;< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   }< / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   < / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   }< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   < / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   < span class = "keywordtype" > bool< / span > EsParserH264::ParseInternal() {< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   DCHECK_LE(es_queue_-> head(), current_access_unit_pos_);< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   DCHECK_LE(current_access_unit_pos_, next_access_unit_pos_);< / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   DCHECK_LE(next_access_unit_pos_, es_queue_-> tail());< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   < / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   < span class = "comment" > // Find the next AUD located at or after |current_access_unit_pos_|. This is< / span > < / div >
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   < span class = "comment" > // needed since initially |current_access_unit_pos_| might not point to< / span > < / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   < span class = "comment" > // an AUD.< / span > < / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   < span class = "comment" > // Discard all the data before the updated |current_access_unit_pos_|< / span > < / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   < span class = "comment" > // since it won' t be used again.< / span > < / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   < span class = "keywordtype" > bool< / span > aud_found = FindAUD(& current_access_unit_pos_);< / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   es_queue_-> Trim(current_access_unit_pos_);< / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   < span class = "keywordflow" > if< / span > (next_access_unit_pos_ < current_access_unit_pos_)< / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   next_access_unit_pos_ = current_access_unit_pos_;< / div >
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   < / div >
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   < span class = "comment" > // Resume parsing later if no AUD was found.< / span > < / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   < span class = "keywordflow" > if< / span > (!aud_found)< / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   < / div >
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   < span class = "comment" > // Find the next AUD to make sure we have a complete access unit.< / span > < / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   < span class = "keywordflow" > if< / span > (next_access_unit_pos_ < current_access_unit_pos_ + kMinAUDSize) {< / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   next_access_unit_pos_ = current_access_unit_pos_ + kMinAUDSize;< / div >
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   DCHECK_LE(next_access_unit_pos_, es_queue_-> tail());< / 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 >   < span class = "keywordflow" > if< / span > (!FindAUD(& next_access_unit_pos_))< / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   < / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   < span class = "comment" > // At this point, we know we have a full access unit.< / span > < / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   < span class = "keywordtype" > bool< / span > is_key_frame = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   < span class = "keywordtype" > int< / span > pps_id_for_access_unit = -1;< / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   < / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   < span class = "keyword" > const< / span > uint8_t* es;< / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   < span class = "keywordtype" > int< / span > size;< / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   es_queue_-> PeekAt(current_access_unit_pos_, & es, & size);< / div >
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   < span class = "keywordtype" > int< / span > access_unit_size = base::checked_cast< int, int64_t> (< / div >
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   next_access_unit_pos_ - current_access_unit_pos_);< / div >
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   DCHECK_LE(access_unit_size, size);< / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   NaluReader reader(kIsAnnexbByteStream, es, access_unit_size);< / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   < / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   < span class = "keywordflow" > while< / span > (< span class = "keyword" > true< / span > ) {< / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   Nalu nalu;< / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > 189< / span >   < span class = "keywordtype" > bool< / span > is_eos = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   < span class = "keywordflow" > switch< / span > (reader.Advance(& nalu)) {< / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   < span class = "keywordflow" > case< / span > NaluReader::kOk:< / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   < span class = "keywordflow" > case< / span > NaluReader::kEOStream:< / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   is_eos = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   < span class = "keywordflow" > default< / span > :< / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00198" > < / a > < span class = "lineno" > 198< / span >   }< / div >
< div class = "line" > < a name = "l00199" > < / a > < span class = "lineno" > 199< / span >   < span class = "keywordflow" > if< / span > (is_eos)< / div >
< div class = "line" > < a name = "l00200" > < / a > < span class = "lineno" > 200< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00201" > < / a > < span class = "lineno" > 201< / span >   < / div >
< div class = "line" > < a name = "l00202" > < / a > < span class = "lineno" > 202< / span >   < span class = "keywordflow" > switch< / span > (nalu.type()) {< / div >
< div class = "line" > < a name = "l00203" > < / a > < span class = "lineno" > 203< / span >   < span class = "keywordflow" > case< / span > Nalu::H264_AUD: {< / div >
< div class = "line" > < a name = "l00204" > < / a > < span class = "lineno" > 204< / span >   DVLOG(LOG_LEVEL_ES) < < < span class = "stringliteral" > " Nalu: AUD" < / span > ;< / div >
< div class = "line" > < a name = "l00205" > < / a > < span class = "lineno" > 205< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00206" > < / a > < span class = "lineno" > 206< / span >   }< / div >
< div class = "line" > < a name = "l00207" > < / a > < span class = "lineno" > 207< / span >   < span class = "keywordflow" > case< / span > Nalu::H264_SPS: {< / div >
< div class = "line" > < a name = "l00208" > < / a > < span class = "lineno" > 208< / span >   DVLOG(LOG_LEVEL_ES) < < < span class = "stringliteral" > " Nalu: SPS" < / span > ;< / div >
< div class = "line" > < a name = "l00209" > < / a > < span class = "lineno" > 209< / span >   < span class = "keywordtype" > int< / span > sps_id;< / div >
< div class = "line" > < a name = "l00210" > < / a > < span class = "lineno" > 210< / span >   < span class = "keywordflow" > if< / span > (h264_parser_-> ParseSPS(nalu, & sps_id) != H264Parser::kOk)< / div >
< div class = "line" > < a name = "l00211" > < / a > < span class = "lineno" > 211< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00212" > < / a > < span class = "lineno" > 212< / span >   decoder_config_check_pending_ = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00213" > < / a > < span class = "lineno" > 213< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00214" > < / a > < span class = "lineno" > 214< / span >   }< / div >
< div class = "line" > < a name = "l00215" > < / a > < span class = "lineno" > 215< / span >   < span class = "keywordflow" > case< / span > Nalu::H264_PPS: {< / div >
< div class = "line" > < a name = "l00216" > < / a > < span class = "lineno" > 216< / span >   DVLOG(LOG_LEVEL_ES) < < < span class = "stringliteral" > " Nalu: PPS" < / span > ;< / div >
< div class = "line" > < a name = "l00217" > < / a > < span class = "lineno" > 217< / span >   < span class = "keywordtype" > int< / span > pps_id;< / div >
< div class = "line" > < a name = "l00218" > < / a > < span class = "lineno" > 218< / span >   < span class = "keywordflow" > if< / span > (h264_parser_-> ParsePPS(nalu, & pps_id) != H264Parser::kOk) {< / div >
< div class = "line" > < a name = "l00219" > < / a > < span class = "lineno" > 219< / span >   < span class = "comment" > // Allow PPS parsing to fail if waiting for SPS.< / span > < / div >
< div class = "line" > < a name = "l00220" > < / a > < span class = "lineno" > 220< / span >   < span class = "keywordflow" > if< / span > (last_video_decoder_config_)< / div >
< div class = "line" > < a name = "l00221" > < / a > < span class = "lineno" > 221< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00222" > < / a > < span class = "lineno" > 222< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00223" > < / a > < span class = "lineno" > 223< / span >   decoder_config_check_pending_ = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00224" > < / a > < span class = "lineno" > 224< / span >   }< / div >
< div class = "line" > < a name = "l00225" > < / a > < span class = "lineno" > 225< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00226" > < / a > < span class = "lineno" > 226< / span >   }< / div >
< div class = "line" > < a name = "l00227" > < / a > < span class = "lineno" > 227< / span >   < span class = "keywordflow" > case< / span > Nalu::H264_IDRSlice:< / div >
< div class = "line" > < a name = "l00228" > < / a > < span class = "lineno" > 228< / span >   < span class = "keywordflow" > case< / span > Nalu::H264_NonIDRSlice: {< / div >
< div class = "line" > < a name = "l00229" > < / a > < span class = "lineno" > 229< / span >   is_key_frame = (nalu.type() == Nalu::H264_IDRSlice);< / div >
< div class = "line" > < a name = "l00230" > < / a > < span class = "lineno" > 230< / span >   DVLOG(LOG_LEVEL_ES) < < < span class = "stringliteral" > " Nalu: slice IDR=" < / span > < < is_key_frame;< / div >
< div class = "line" > < a name = "l00231" > < / a > < span class = "lineno" > 231< / span >   H264SliceHeader shdr;< / div >
< div class = "line" > < a name = "l00232" > < / a > < span class = "lineno" > 232< / span >   < span class = "keywordflow" > if< / span > (h264_parser_-> ParseSliceHeader(nalu, & shdr) != H264Parser::kOk) {< / div >
< div class = "line" > < a name = "l00233" > < / a > < span class = "lineno" > 233< / span >   < span class = "comment" > // Only accept an invalid SPS/PPS at the beginning when the stream< / span > < / div >
< div class = "line" > < a name = "l00234" > < / a > < span class = "lineno" > 234< / span >   < span class = "comment" > // does not necessarily start with an SPS/PPS/IDR.< / span > < / div >
< div class = "line" > < a name = "l00235" > < / a > < span class = "lineno" > 235< / span >   < span class = "keywordflow" > if< / span > (last_video_decoder_config_)< / div >
< div class = "line" > < a name = "l00236" > < / a > < span class = "lineno" > 236< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00237" > < / a > < span class = "lineno" > 237< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00238" > < / a > < span class = "lineno" > 238< / span >   pps_id_for_access_unit = shdr.pic_parameter_set_id;< / div >
< div class = "line" > < a name = "l00239" > < / a > < span class = "lineno" > 239< / span >   }< / div >
< div class = "line" > < a name = "l00240" > < / a > < span class = "lineno" > 240< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00241" > < / a > < span class = "lineno" > 241< / span >   }< / div >
< div class = "line" > < a name = "l00242" > < / a > < span class = "lineno" > 242< / span >   < span class = "keywordflow" > default< / span > : {< / div >
< div class = "line" > < a name = "l00243" > < / a > < span class = "lineno" > 243< / span >   DVLOG(LOG_LEVEL_ES) < < < span class = "stringliteral" > " Nalu: " < / span > < < nalu.type();< / div >
< div class = "line" > < a name = "l00244" > < / a > < span class = "lineno" > 244< / span >   }< / div >
< div class = "line" > < a name = "l00245" > < / a > < span class = "lineno" > 245< / span >   }< / div >
< div class = "line" > < a name = "l00246" > < / a > < span class = "lineno" > 246< / span >   }< / div >
< div class = "line" > < a name = "l00247" > < / a > < span class = "lineno" > 247< / span >   < / div >
< div class = "line" > < a name = "l00248" > < / a > < span class = "lineno" > 248< / span >   < span class = "keywordflow" > if< / span > (waiting_for_key_frame_) {< / div >
< div class = "line" > < a name = "l00249" > < / a > < span class = "lineno" > 249< / span >   waiting_for_key_frame_ = !is_key_frame;< / div >
< div class = "line" > < a name = "l00250" > < / a > < span class = "lineno" > 250< / span >   }< / div >
< div class = "line" > < a name = "l00251" > < / a > < span class = "lineno" > 251< / span >   < span class = "keywordflow" > if< / span > (!waiting_for_key_frame_) {< / div >
< div class = "line" > < a name = "l00252" > < / a > < span class = "lineno" > 252< / span >   < span class = "comment" > // Emit a frame and move the stream to the next AUD position.< / span > < / div >
< div class = "line" > < a name = "l00253" > < / a > < span class = "lineno" > 253< / span >   RCHECK(EmitFrame(current_access_unit_pos_, access_unit_size,< / div >
< div class = "line" > < a name = "l00254" > < / a > < span class = "lineno" > 254< / span >   is_key_frame, pps_id_for_access_unit));< / div >
< div class = "line" > < a name = "l00255" > < / a > < span class = "lineno" > 255< / span >   }< / div >
< div class = "line" > < a name = "l00256" > < / a > < span class = "lineno" > 256< / span >   current_access_unit_pos_ = next_access_unit_pos_;< / div >
< div class = "line" > < a name = "l00257" > < / a > < span class = "lineno" > 257< / span >   es_queue_-> Trim(current_access_unit_pos_);< / div >
< div class = "line" > < a name = "l00258" > < / a > < span class = "lineno" > 258< / span >   < / div >
< div class = "line" > < a name = "l00259" > < / a > < span class = "lineno" > 259< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00260" > < / a > < span class = "lineno" > 260< / span >   }< / div >
< div class = "line" > < a name = "l00261" > < / a > < span class = "lineno" > 261< / span >   < / div >
< div class = "line" > < a name = "l00262" > < / a > < span class = "lineno" > 262< / span >   < span class = "keywordtype" > bool< / span > EsParserH264::EmitFrame(int64_t access_unit_pos,< / div >
< div class = "line" > < a name = "l00263" > < / a > < span class = "lineno" > 263< / span >   < span class = "keywordtype" > int< / span > access_unit_size,< / div >
< div class = "line" > < a name = "l00264" > < / a > < span class = "lineno" > 264< / span >   < span class = "keywordtype" > bool< / span > is_key_frame,< / div >
< div class = "line" > < a name = "l00265" > < / a > < span class = "lineno" > 265< / span >   < span class = "keywordtype" > int< / span > pps_id) {< / div >
< div class = "line" > < a name = "l00266" > < / a > < span class = "lineno" > 266< / span >   < span class = "comment" > // Get the access unit timing info.< / span > < / div >
< div class = "line" > < a name = "l00267" > < / a > < span class = "lineno" > 267< / span >   TimingDesc current_timing_desc = {kNoTimestamp, kNoTimestamp};< / div >
< div class = "line" > < a name = "l00268" > < / a > < span class = "lineno" > 268< / span >   < span class = "keywordflow" > while< / span > (!timing_desc_list_.empty() & & < / div >
< div class = "line" > < a name = "l00269" > < / a > < span class = "lineno" > 269< / span >   timing_desc_list_.front().first < = access_unit_pos) {< / div >
< div class = "line" > < a name = "l00270" > < / a > < span class = "lineno" > 270< / span >   current_timing_desc = timing_desc_list_.front().second;< / div >
< div class = "line" > < a name = "l00271" > < / a > < span class = "lineno" > 271< / span >   timing_desc_list_.pop_front();< / div >
< div class = "line" > < a name = "l00272" > < / a > < span class = "lineno" > 272< / span >   }< / div >
< div class = "line" > < a name = "l00273" > < / a > < span class = "lineno" > 273< / span >   < span class = "keywordflow" > if< / span > (current_timing_desc.pts == kNoTimestamp)< / div >
< div class = "line" > < a name = "l00274" > < / a > < span class = "lineno" > 274< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00275" > < / a > < span class = "lineno" > 275< / span >   < / div >
< div class = "line" > < a name = "l00276" > < / a > < span class = "lineno" > 276< / span >   < span class = "comment" > // Emit a frame.< / span > < / div >
< div class = "line" > < a name = "l00277" > < / a > < span class = "lineno" > 277< / span >   DVLOG(LOG_LEVEL_ES) < < < span class = "stringliteral" > " Emit frame: stream_pos=" < / span > < < current_access_unit_pos_< / div >
< div class = "line" > < a name = "l00278" > < / a > < span class = "lineno" > 278< / span >   < < < span class = "stringliteral" > " size=" < / span > < < access_unit_size;< / div >
< div class = "line" > < a name = "l00279" > < / a > < span class = "lineno" > 279< / span >   < span class = "keywordtype" > int< / span > es_size;< / div >
< div class = "line" > < a name = "l00280" > < / a > < span class = "lineno" > 280< / span >   < span class = "keyword" > const< / span > uint8_t* es;< / div >
< div class = "line" > < a name = "l00281" > < / a > < span class = "lineno" > 281< / span >   es_queue_-> PeekAt(current_access_unit_pos_, & es, & es_size);< / div >
< div class = "line" > < a name = "l00282" > < / a > < span class = "lineno" > 282< / span >   CHECK_GE(es_size, access_unit_size);< / div >
< div class = "line" > < a name = "l00283" > < / a > < span class = "lineno" > 283< / span >   < / div >
< div class = "line" > < a name = "l00284" > < / a > < span class = "lineno" > 284< / span >   < span class = "comment" > // Convert frame to unit stream format.< / span > < / div >
< div class = "line" > < a name = "l00285" > < / a > < span class = "lineno" > 285< / span >   std::vector< uint8_t> converted_frame;< / div >
< div class = "line" > < a name = "l00286" > < / a > < span class = "lineno" > 286< / span >   < span class = "keywordflow" > if< / span > (!stream_converter_-> ConvertByteStreamToNalUnitStream(< / div >
< div class = "line" > < a name = "l00287" > < / a > < span class = "lineno" > 287< / span >   es, access_unit_size, & converted_frame)) {< / div >
< div class = "line" > < a name = "l00288" > < / a > < span class = "lineno" > 288< / span >   DLOG(ERROR) < < < span class = "stringliteral" > " Failure to convert video frame to unit stream format." < / span > ;< / div >
< div class = "line" > < a name = "l00289" > < / a > < span class = "lineno" > 289< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00290" > < / a > < span class = "lineno" > 290< / span >   }< / div >
< div class = "line" > < a name = "l00291" > < / a > < span class = "lineno" > 291< / span >   < / div >
< div class = "line" > < a name = "l00292" > < / a > < span class = "lineno" > 292< / span >   < span class = "keywordflow" > if< / span > (decoder_config_check_pending_) {< / div >
< div class = "line" > < a name = "l00293" > < / a > < span class = "lineno" > 293< / span >   < span class = "comment" > // Update the video decoder configuration if needed.< / span > < / div >
< div class = "line" > < a name = "l00294" > < / a > < span class = "lineno" > 294< / span >   < span class = "keyword" > const< / span > H264PPS* pps = h264_parser_-> GetPPS(pps_id);< / div >
< div class = "line" > < a name = "l00295" > < / a > < span class = "lineno" > 295< / span >   < span class = "keywordflow" > if< / span > (!pps) {< / div >
< div class = "line" > < a name = "l00296" > < / a > < span class = "lineno" > 296< / span >   < span class = "comment" > // Only accept an invalid PPS at the beginning when the stream< / span > < / div >
< div class = "line" > < a name = "l00297" > < / a > < span class = "lineno" > 297< / span >   < span class = "comment" > // does not necessarily start with an SPS/PPS/IDR.< / span > < / div >
< div class = "line" > < a name = "l00298" > < / a > < span class = "lineno" > 298< / span >   < span class = "comment" > // In this case, the initial frames are conveyed to the upper layer with< / span > < / div >
< div class = "line" > < a name = "l00299" > < / a > < span class = "lineno" > 299< / span >   < span class = "comment" > // an invalid VideoDecoderConfig and it' s up to the upper layer< / span > < / div >
< div class = "line" > < a name = "l00300" > < / a > < span class = "lineno" > 300< / span >   < span class = "comment" > // to process this kind of frame accordingly.< / span > < / div >
< div class = "line" > < a name = "l00301" > < / a > < span class = "lineno" > 301< / span >   < span class = "keywordflow" > if< / span > (last_video_decoder_config_)< / div >
< div class = "line" > < a name = "l00302" > < / a > < span class = "lineno" > 302< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00303" > < / a > < span class = "lineno" > 303< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00304" > < / a > < span class = "lineno" > 304< / span >   < span class = "keyword" > const< / span > H264SPS* sps = h264_parser_-> GetSPS(pps-> seq_parameter_set_id);< / div >
< div class = "line" > < a name = "l00305" > < / a > < span class = "lineno" > 305< / span >   < span class = "keywordflow" > if< / span > (!sps)< / div >
< div class = "line" > < a name = "l00306" > < / a > < span class = "lineno" > 306< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00307" > < / a > < span class = "lineno" > 307< / span >   RCHECK(UpdateVideoDecoderConfig(sps));< / div >
< div class = "line" > < a name = "l00308" > < / a > < span class = "lineno" > 308< / span >   decoder_config_check_pending_ = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00309" > < / a > < span class = "lineno" > 309< / span >   }< / div >
< div class = "line" > < a name = "l00310" > < / a > < span class = "lineno" > 310< / span >   }< / div >
< div class = "line" > < a name = "l00311" > < / a > < span class = "lineno" > 311< / span >   < / div >
< div class = "line" > < a name = "l00312" > < / a > < span class = "lineno" > 312< / span >   < span class = "comment" > // Create the media sample, emitting always the previous sample after< / span > < / div >
< div class = "line" > < a name = "l00313" > < / a > < span class = "lineno" > 313< / span >   < span class = "comment" > // calculating its duration.< / span > < / div >
< div class = "line" > < a name = "l00314" > < / a > < span class = "lineno" > 314< / span >   scoped_refptr< MediaSample> media_sample = < a class = "code" href = "../../d8/d6c/classedash__packager_1_1media_1_1MediaSample.html#ac65ec88fbe6d8b72c65b1ff3f68c5b02" > MediaSample::CopyFrom< / a > (< / div >
< div class = "line" > < a name = "l00315" > < / a > < span class = "lineno" > 315< / span >   converted_frame.data(), converted_frame.size(), is_key_frame);< / div >
< div class = "line" > < a name = "l00316" > < / a > < span class = "lineno" > 316< / span >   media_sample-> set_dts(current_timing_desc.dts);< / div >
< div class = "line" > < a name = "l00317" > < / a > < span class = "lineno" > 317< / span >   media_sample-> set_pts(current_timing_desc.pts);< / div >
< div class = "line" > < a name = "l00318" > < / a > < span class = "lineno" > 318< / span >   < span class = "keywordflow" > if< / span > (pending_sample_) {< / div >
< div class = "line" > < a name = "l00319" > < / a > < span class = "lineno" > 319< / span >   DCHECK_GT(media_sample-> dts(), pending_sample_-> dts());< / div >
< div class = "line" > < a name = "l00320" > < / a > < span class = "lineno" > 320< / span >   pending_sample_duration_ = media_sample-> dts() - pending_sample_-> dts();< / div >
< div class = "line" > < a name = "l00321" > < / a > < span class = "lineno" > 321< / span >   pending_sample_-> set_duration(pending_sample_duration_);< / div >
< div class = "line" > < a name = "l00322" > < / a > < span class = "lineno" > 322< / span >   emit_sample_cb_.Run(pid(), pending_sample_);< / div >
< div class = "line" > < a name = "l00323" > < / a > < span class = "lineno" > 323< / span >   }< / div >
< div class = "line" > < a name = "l00324" > < / a > < span class = "lineno" > 324< / span >   pending_sample_ = media_sample;< / div >
< div class = "line" > < a name = "l00325" > < / a > < span class = "lineno" > 325< / span >   < / div >
< div class = "line" > < a name = "l00326" > < / a > < span class = "lineno" > 326< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00327" > < / a > < span class = "lineno" > 327< / span >   }< / div >
< div class = "line" > < a name = "l00328" > < / a > < span class = "lineno" > 328< / span >   < / div >
< div class = "line" > < a name = "l00329" > < / a > < span class = "lineno" > 329< / span >   < span class = "keywordtype" > bool< / span > EsParserH264::UpdateVideoDecoderConfig(< span class = "keyword" > const< / span > H264SPS* sps) {< / div >
< div class = "line" > < a name = "l00330" > < / a > < span class = "lineno" > 330< / span >   std::vector< uint8_t> decoder_config_record;< / div >
< div class = "line" > < a name = "l00331" > < / a > < span class = "lineno" > 331< / span >   < span class = "keywordflow" > if< / span > (!stream_converter_-> GetAVCDecoderConfigurationRecord(< / div >
< div class = "line" > < a name = "l00332" > < / a > < span class = "lineno" > 332< / span >   & decoder_config_record)) {< / div >
< div class = "line" > < a name = "l00333" > < / a > < span class = "lineno" > 333< / span >   DLOG(ERROR) < < < span class = "stringliteral" > " Failure to construct an AVCDecoderConfigurationRecord" < / span > ;< / div >
< div class = "line" > < a name = "l00334" > < / a > < span class = "lineno" > 334< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00335" > < / a > < span class = "lineno" > 335< / span >   }< / div >
< div class = "line" > < a name = "l00336" > < / a > < span class = "lineno" > 336< / span >   < / div >
< div class = "line" > < a name = "l00337" > < / a > < span class = "lineno" > 337< / span >   < span class = "keywordflow" > if< / span > (last_video_decoder_config_) {< / div >
< div class = "line" > < a name = "l00338" > < / a > < span class = "lineno" > 338< / span >   < span class = "keywordflow" > if< / span > (last_video_decoder_config_-> extra_data() != decoder_config_record) {< / div >
< div class = "line" > < a name = "l00339" > < / a > < span class = "lineno" > 339< / span >   < span class = "comment" > // Video configuration has changed. Issue warning.< / span > < / div >
< div class = "line" > < a name = "l00340" > < / a > < span class = "lineno" > 340< / span >   < span class = "comment" > // TODO(tinskip): Check the nature of the configuration change. Only< / span > < / div >
< div class = "line" > < a name = "l00341" > < / a > < span class = "lineno" > 341< / span >   < span class = "comment" > // minor configuration changes (such as frame ordering) can be handled< / span > < / div >
< div class = "line" > < a name = "l00342" > < / a > < span class = "lineno" > 342< / span >   < span class = "comment" > // gracefully by decoders without notification. Major changes (such as< / span > < / div >
< div class = "line" > < a name = "l00343" > < / a > < span class = "lineno" > 343< / span >   < span class = "comment" > // video resolution changes) should be treated as errors.< / span > < / div >
< div class = "line" > < a name = "l00344" > < / a > < span class = "lineno" > 344< / span >   LOG(WARNING) < < < span class = "stringliteral" > " H.264 decoder configuration has changed." < / span > ;< / div >
< div class = "line" > < a name = "l00345" > < / a > < span class = "lineno" > 345< / span >   last_video_decoder_config_-> set_extra_data(decoder_config_record);< / div >
< div class = "line" > < a name = "l00346" > < / a > < span class = "lineno" > 346< / span >   }< / div >
< div class = "line" > < a name = "l00347" > < / a > < span class = "lineno" > 347< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00348" > < / a > < span class = "lineno" > 348< / span >   }< / div >
< div class = "line" > < a name = "l00349" > < / a > < span class = "lineno" > 349< / span >   < / div >
< div class = "line" > < a name = "l00350" > < / a > < span class = "lineno" > 350< / span >   uint32_t coded_width = 0;< / div >
< div class = "line" > < a name = "l00351" > < / a > < span class = "lineno" > 351< / span >   uint32_t coded_height = 0;< / div >
< div class = "line" > < a name = "l00352" > < / a > < span class = "lineno" > 352< / span >   uint32_t pixel_width = 0;< / div >
< div class = "line" > < a name = "l00353" > < / a > < span class = "lineno" > 353< / span >   uint32_t pixel_height = 0;< / div >
< div class = "line" > < a name = "l00354" > < / a > < span class = "lineno" > 354< / span >   < span class = "keywordflow" > if< / span > (!ExtractResolutionFromSps(*sps, & coded_width, & coded_height, & pixel_width,< / div >
< div class = "line" > < a name = "l00355" > < / a > < span class = "lineno" > 355< / span >   & pixel_height)) {< / div >
< div class = "line" > < a name = "l00356" > < / a > < span class = "lineno" > 356< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Failed to parse SPS." < / span > ;< / div >
< div class = "line" > < a name = "l00357" > < / a > < span class = "lineno" > 357< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00358" > < / a > < span class = "lineno" > 358< / span >   }< / div >
< div class = "line" > < a name = "l00359" > < / a > < span class = "lineno" > 359< / span >   < / div >
< div class = "line" > < a name = "l00360" > < / a > < span class = "lineno" > 360< / span >   last_video_decoder_config_ = scoped_refptr< StreamInfo> (< / div >
< div class = "line" > < a name = "l00361" > < / a > < span class = "lineno" > 361< / span >   < span class = "keyword" > new< / span > VideoStreamInfo(< / div >
< div class = "line" > < a name = "l00362" > < / a > < span class = "lineno" > 362< / span >   pid(),< / div >
< div class = "line" > < a name = "l00363" > < / a > < span class = "lineno" > 363< / span >   kMpeg2Timescale,< / div >
< div class = "line" > < a name = "l00364" > < / a > < span class = "lineno" > 364< / span >   kInfiniteDuration,< / div >
< div class = "line" > < a name = "l00365" > < / a > < span class = "lineno" > 365< / span >   kCodecH264,< / div >
< div class = "line" > < a name = "l00366" > < / a > < span class = "lineno" > 366< / span >   < a class = "code" href = "../../d6/d49/classedash__packager_1_1media_1_1AVCDecoderConfiguration.html#ad03be6192998b36ef2364266e5604c19" > AVCDecoderConfiguration::GetCodecString< / a > (decoder_config_record[1],< / div >
< div class = "line" > < a name = "l00367" > < / a > < span class = "lineno" > 367< / span >   decoder_config_record[2],< / div >
< div class = "line" > < a name = "l00368" > < / a > < span class = "lineno" > 368< / span >   decoder_config_record[3]),< / div >
< div class = "line" > < a name = "l00369" > < / a > < span class = "lineno" > 369< / span >   std::string(),< / div >
< div class = "line" > < a name = "l00370" > < / a > < span class = "lineno" > 370< / span >   coded_width,< / div >
< div class = "line" > < a name = "l00371" > < / a > < span class = "lineno" > 371< / span >   coded_height,< / div >
< div class = "line" > < a name = "l00372" > < / a > < span class = "lineno" > 372< / span >   pixel_width,< / div >
< div class = "line" > < a name = "l00373" > < / a > < span class = "lineno" > 373< / span >   pixel_height,< / div >
< div class = "line" > < a name = "l00374" > < / a > < span class = "lineno" > 374< / span >   0,< / div >
< div class = "line" > < a name = "l00375" > < / a > < span class = "lineno" > 375< / span >   H264ByteToUnitStreamConverter::kUnitStreamNaluLengthSize,< / div >
< div class = "line" > < a name = "l00376" > < / a > < span class = "lineno" > 376< / span >   decoder_config_record.data(),< / div >
< div class = "line" > < a name = "l00377" > < / a > < span class = "lineno" > 377< / span >   decoder_config_record.size(),< / div >
< div class = "line" > < a name = "l00378" > < / a > < span class = "lineno" > 378< / span >   < span class = "keyword" > false< / span > ));< / div >
< div class = "line" > < a name = "l00379" > < / a > < span class = "lineno" > 379< / span >   DVLOG(1) < < < span class = "stringliteral" > " Profile IDC: " < / span > < < sps-> profile_idc;< / div >
< div class = "line" > < a name = "l00380" > < / a > < span class = "lineno" > 380< / span >   DVLOG(1) < < < span class = "stringliteral" > " Level IDC: " < / span > < < sps-> level_idc;< / div >
< div class = "line" > < a name = "l00381" > < / a > < span class = "lineno" > 381< / span >   DVLOG(1) < < < span class = "stringliteral" > " log2_max_frame_num_minus4: " < / span > < < sps-> log2_max_frame_num_minus4;< / div >
< div class = "line" > < a name = "l00382" > < / a > < span class = "lineno" > 382< / span >   < / div >
< div class = "line" > < a name = "l00383" > < / a > < span class = "lineno" > 383< / span >   < span class = "comment" > // Video config notification.< / span > < / div >
< div class = "line" > < a name = "l00384" > < / a > < span class = "lineno" > 384< / span >   new_stream_info_cb_.Run(last_video_decoder_config_);< / div >
< div class = "line" > < a name = "l00385" > < / a > < span class = "lineno" > 385< / span >   < / div >
< div class = "line" > < a name = "l00386" > < / a > < span class = "lineno" > 386< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00387" > < / a > < span class = "lineno" > 387< / span >   }< / div >
< div class = "line" > < a name = "l00388" > < / a > < span class = "lineno" > 388< / span >   < / div >
< div class = "line" > < a name = "l00389" > < / a > < span class = "lineno" > 389< / span >   } < span class = "comment" > // namespace mp2t< / span > < / div >
< div class = "line" > < a name = "l00390" > < / a > < span class = "lineno" > 390< / span >   } < span class = "comment" > // namespace media< / span > < / div >
< div class = "line" > < a name = "l00391" > < / a > < span class = "lineno" > 391< / span >   } < span class = "comment" > // namespace edash_packager< / span > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1AVCDecoderConfiguration_html_ad03be6192998b36ef2364266e5604c19" > < div class = "ttname" > < a href = "../../d6/d49/classedash__packager_1_1media_1_1AVCDecoderConfiguration.html#ad03be6192998b36ef2364266e5604c19" > edash_packager::media::AVCDecoderConfiguration::GetCodecString< / a > < / div > < div class = "ttdeci" > std::string GetCodecString() const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../db/d01/avc__decoder__configuration_8cc_source.html#l00062" > avc_decoder_configuration.cc:62< / a > < / div > < / div >
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< div class = "ttc" id = "classedash__packager_1_1media_1_1MediaSample_html_ac65ec88fbe6d8b72c65b1ff3f68c5b02" > < div class = "ttname" > < a href = "../../d8/d6c/classedash__packager_1_1media_1_1MediaSample.html#ac65ec88fbe6d8b72c65b1ff3f68c5b02" > edash_packager::media::MediaSample::CopyFrom< / a > < / div > < div class = "ttdeci" > static scoped_refptr< MediaSample > CopyFrom(const uint8_t *data, size_t size, bool is_key_frame)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d8/d0d/media__sample_8cc_source.html#l00045" > media_sample.cc:45< / a > < / div > < / div >
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2015-10-16 00:33:37 +00:00
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