2015-11-18 00:22:42 +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_5eb2e460866db0ed29e32d64402e5c22.html" > filters< / a > < / li > < / ul >
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< div class = "fragment" > < div class = "line" > < a name = "l00001" > < / a > < span class = "lineno" > 1< / span >   < span class = "comment" > // Copyright 2015 Google Inc. All rights reserved.< / span > < / div >
< div class = "line" > < a name = "l00002" > < / a > < span class = "lineno" > 2< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00003" > < / a > < span class = "lineno" > 3< / span >   < span class = "comment" > // Use of this source code is governed by a BSD-style< / span > < / div >
< div class = "line" > < a name = "l00004" > < / a > < span class = "lineno" > 4< / span >   < span class = "comment" > // license that can be found in the LICENSE file or at< / span > < / div >
< div class = "line" > < a name = "l00005" > < / a > < span class = "lineno" > 5< / span >   < span class = "comment" > // https://developers.google.com/open-source/licenses/bsd< / span > < / div >
< div class = "line" > < a name = "l00006" > < / a > < span class = "lineno" > 6< / span >   < / div >
< div class = "line" > < a name = "l00007" > < / a > < span class = "lineno" > 7< / span >   < span class = "preprocessor" > #include " packager/media/filters/vp9_parser.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/media/base/bit_reader.h" < / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "preprocessor" > #include " packager/media/formats/mp4/rcheck.h" < / span > < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "keyword" > namespace < / span > edash_packager {< / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "keyword" > namespace < / span > media {< / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "keyword" > const< / span > uint32_t VP9_FRAME_MARKER = 2;< / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "keyword" > const< / span > uint32_t VP9_SYNC_CODE = 0x498342;< / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "keyword" > const< / span > uint32_t REFS_PER_FRAME = 3;< / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < span class = "keyword" > const< / span > uint32_t REF_FRAMES_LOG2 = 3;< / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "keyword" > const< / span > uint32_t REF_FRAMES = (1 < < REF_FRAMES_LOG2);< / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "keyword" > const< / span > uint32_t FRAME_CONTEXTS_LOG2 = 2;< / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "keyword" > const< / span > uint32_t MAX_REF_LF_DELTAS = 4;< / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < span class = "keyword" > const< / span > uint32_t MAX_MODE_LF_DELTAS = 2;< / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < span class = "keyword" > const< / span > uint32_t QINDEX_BITS = 8;< / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < span class = "keyword" > const< / span > uint32_t MAX_SEGMENTS = 8;< / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < span class = "keyword" > const< / span > uint32_t SEG_TREE_PROBS = (MAX_SEGMENTS - 1);< / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < span class = "keyword" > const< / span > uint32_t PREDICTION_PROBS = 3;< / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   < span class = "keyword" > const< / span > uint32_t SEG_LVL_MAX = 4;< / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < span class = "keyword" > const< / span > uint32_t MI_SIZE_LOG2 = 3;< / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < span class = "keyword" > const< / span > uint32_t MI_BLOCK_SIZE_LOG2 = (6 - MI_SIZE_LOG2); < span class = "comment" > // 64 = 2^6< / span > < / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < span class = "keyword" > const< / span > uint32_t MIN_TILE_WIDTH_B64 = 4;< / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < span class = "keyword" > const< / span > uint32_t MAX_TILE_WIDTH_B64 = 64;< / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > bool< / span > SEG_FEATURE_DATA_SIGNED[SEG_LVL_MAX] = {< span class = "keyword" > true< / span > , < span class = "keyword" > true< / span > , < span class = "keyword" > false< / span > , < span class = "keyword" > false< / span > };< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < span class = "keyword" > const< / span > uint32_t SEG_FEATURE_DATA_MAX_BITS[SEG_LVL_MAX] = {8, 6, 2, 0};< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < span class = "keyword" > enum< / span > VpxColorSpace {< / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   VPX_COLOR_SPACE_UNKNOWN = 0,< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   VPX_COLOR_SPACE_BT_601 = 1,< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   VPX_COLOR_SPACE_BT_709 = 2,< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   VPX_COLOR_SPACE_SMPTE_170 = 3,< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   VPX_COLOR_SPACE_SMPTE_240 = 4,< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   VPX_COLOR_SPACE_BT_2020 = 5,< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   VPX_COLOR_SPACE_RESERVED = 6,< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   VPX_COLOR_SPACE_SRGB = 7,< / 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 >   < / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < span class = "keyword" > class < / span > VP9BitReader : < span class = "keyword" > public< / span > BitReader {< / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "keyword" > public< / span > :< / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   VP9BitReader(< span class = "keyword" > const< / span > uint8_t* data, off_t size) : BitReader(data, size) {}< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   ~VP9BitReader() {}< / 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 = "keywordtype" > bool< / span > SkipBitsConditional(uint32_t num_bits) {< / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < span class = "keywordtype" > bool< / span > condition;< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < span class = "keywordflow" > if< / span > (!ReadBits(1, & condition))< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < span class = "keywordflow" > return< / span > condition ? SkipBits(num_bits) : true;< / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / 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 = "keyword" > private< / span > :< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   DISALLOW_COPY_AND_ASSIGN(VP9BitReader);< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   };< / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   < / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   uint32_t RoundupShift(uint32_t value, uint32_t n) {< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < span class = "keywordflow" > return< / span > (value + (1 < < n) - 1) > > n;< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   }< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   < / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   < span class = "comment" > // Number of MI-units (8*8).< / span > < / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   uint32_t GetNumMiUnits(uint32_t pixels) {< / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   < span class = "keywordflow" > return< / span > RoundupShift(pixels, MI_SIZE_LOG2);< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   }< / 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 >   < span class = "comment" > // Number of sb64 (64x64) blocks per mi_units.< / span > < / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   uint32_t GetNumBlocks(uint32_t mi_units) {< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   < span class = "keywordflow" > return< / span > RoundupShift(mi_units, MI_BLOCK_SIZE_LOG2);< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   }< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   < / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   uint32_t GetMinLog2TileCols(uint32_t sb64_cols) {< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   uint32_t min_log2 = 0;< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   < span class = "keywordflow" > while< / span > ((MAX_TILE_WIDTH_B64 < < min_log2) < sb64_cols)< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   ++min_log2;< / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   < span class = "keywordflow" > return< / span > min_log2;< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   }< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   < / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   uint32_t GetMaxLog2TileCols(uint32_t sb64_cols) {< / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   uint32_t max_log2 = 1;< / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   < span class = "keywordflow" > while< / span > ((sb64_cols > > max_log2) > = MIN_TILE_WIDTH_B64)< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   ++max_log2;< / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   < span class = "keywordflow" > return< / span > max_log2 - 1;< / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / 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 = "keywordtype" > void< / span > GetTileNBits(uint32_t mi_cols,< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   uint32_t* min_log2_tile_cols,< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   uint32_t* max_log2_tile_cols) {< / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   < span class = "keyword" > const< / span > uint32_t sb64_cols = GetNumBlocks(mi_cols);< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   *min_log2_tile_cols = GetMinLog2TileCols(sb64_cols);< / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   *max_log2_tile_cols = GetMaxLog2TileCols(sb64_cols);< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   CHECK_LE(*min_log2_tile_cols, *max_log2_tile_cols);< / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / 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 >   < span class = "comment" > // Parse superframe index if it is a superframe. Fill |vpx_frames| with the< / span > < / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   < span class = "comment" > // frames information, which contains the sizes of the frames indicated in< / span > < / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   < span class = "comment" > // superframe index if it is a superframe; otherwise it should contain one< / span > < / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   < span class = "comment" > // single frame with |data_size| as frame size.< / span > < / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   < span class = "keywordtype" > bool< / span > ParseIfSuperframeIndex(< span class = "keyword" > const< / span > uint8_t* data,< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   < span class = "keywordtype" > size_t< / span > data_size,< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   std::vector< VPxFrameInfo> * vpx_frames) {< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   vpx_frames-> clear();< / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   uint8_t superframe_marker = data[data_size - 1];< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   VPxFrameInfo vpx_frame;< / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   < span class = "keywordflow" > if< / span > ((superframe_marker & 0xe0) != 0xc0) {< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < span class = "comment" > // This is not a super frame. There should be only one frame.< / span > < / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   vpx_frame.frame_size = data_size;< / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   vpx_frames-> push_back(vpx_frame);< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   }< / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   < / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > size_t< / span > num_frames = (superframe_marker & 0x07) + 1;< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > size_t< / span > frame_size_length = ((superframe_marker > > 3) & 0x03) + 1;< / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < span class = "comment" > // Two maker bytes + frame sizes.< / span > < / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > size_t< / span > index_size = 2 + num_frames * frame_size_length;< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   < / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < span class = "keywordflow" > if< / span > (data_size < index_size) {< / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   LOG(ERROR) < < < span class = "stringliteral" > " This chunk is marked as having a superframe index but " < / span > < / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   < span class = "stringliteral" > " doesn' t have enough data for it." < / span > ;< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   }< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   < span class = "keyword" > const< / span > uint8_t superframe_marker2 = data[data_size - index_size];< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   < span class = "keywordflow" > if< / span > (superframe_marker2 != superframe_marker) {< / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   LOG(ERROR) < < < span class = "stringliteral" > " This chunk is marked as having a superframe index but " < / span > < / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   < span class = "stringliteral" > " doesn' t have the matching marker byte at the front of the " < / span > < / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   < span class = "stringliteral" > " index." < / span > ;< / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / 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 >   VLOG(3) < < < span class = "stringliteral" > " Superframe num_frames=" < / span > < < num_frames< / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   < < < span class = "stringliteral" > " frame_size_length=" < / span > < < frame_size_length;< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   < / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   data += data_size - index_size + 1;< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   < span class = "keywordtype" > size_t< / span > total_frame_sizes = 0;< / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < num_frames; ++i) {< / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   vpx_frame.frame_size = 0;< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < frame_size_length; ++i) {< / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   vpx_frame.frame_size |= *data < < (i * 8);< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   ++data;< / 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 >   total_frame_sizes += vpx_frame.frame_size;< / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   vpx_frames-> push_back(vpx_frame);< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   }< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   < span class = "keywordflow" > if< / span > (total_frame_sizes + index_size != data_size) {< / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Data size (" < / span > < < data_size< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   < < < span class = "stringliteral" > " ) does not match with sum of frame sizes (" < / span > < / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   < < total_frame_sizes < < < span class = "stringliteral" > " ) + index_size (" < / span > < < index_size < < < span class = "stringliteral" > " )" < / span > ;< / div >
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   }< / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   }< / 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 >   < span class = "keywordtype" > bool< / span > ReadProfile(VP9BitReader* reader, VPCodecConfiguration* codec_config) {< / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   uint8_t bit[2];< / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   RCHECK(reader-> ReadBits(1, & bit[0]));< / div >
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   RCHECK(reader-> ReadBits(1, & bit[1]));< / div >
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   uint8_t profile = bit[0] | (bit[1] < < 1);< / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   < span class = "keywordflow" > if< / span > (profile == 3) {< / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   < span class = "keywordtype" > bool< / span > reserved;< / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   RCHECK(reader-> ReadBits(1, & reserved));< / div >
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   RCHECK(!reserved);< / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   }< / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   codec_config-> set_profile(profile);< / div >
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / 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 >   < / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   < span class = "keywordtype" > bool< / span > ReadSyncCode(VP9BitReader* reader) {< / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   uint32_t sync_code;< / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   RCHECK(reader-> ReadBits(24, & sync_code));< / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   < span class = "keywordflow" > return< / span > sync_code == VP9_SYNC_CODE;< / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   }< / 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 >   VPCodecConfiguration::ColorSpace GetColorSpace(uint8_t color_space) {< / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   < span class = "keywordflow" > switch< / span > (color_space) {< / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   < span class = "keywordflow" > case< / span > VPX_COLOR_SPACE_UNKNOWN:< / div >
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   < span class = "keywordflow" > return< / span > VPCodecConfiguration::COLOR_SPACE_UNSPECIFIED;< / div >
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   < span class = "keywordflow" > case< / span > VPX_COLOR_SPACE_BT_601:< / div >
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   < span class = "keywordflow" > return< / span > VPCodecConfiguration::COLOR_SPACE_BT_601;< / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   < span class = "keywordflow" > case< / span > VPX_COLOR_SPACE_BT_709:< / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   < span class = "keywordflow" > return< / span > VPCodecConfiguration::COLOR_SPACE_BT_709;< / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   < span class = "keywordflow" > case< / span > VPX_COLOR_SPACE_BT_2020:< / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   < span class = "comment" > // VP9 does not specify if it is in the form of “constant luminance” or< / span > < / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > 189< / span >   < span class = "comment" > // “non-constant luminance”. As such, application should rely on the< / span > < / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   < span class = "comment" > // signaling outside of VP9 bitstream. If there is no such signaling,< / span > < / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   < span class = "comment" > // application may assume non-constant luminance for BT.2020.< / span > < / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   < span class = "keywordflow" > return< / span > VPCodecConfiguration::COLOR_SPACE_BT_2020_NON_CONSTANT_LUMINANCE;< / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   < span class = "keywordflow" > case< / span > VPX_COLOR_SPACE_SRGB:< / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   < span class = "keywordflow" > return< / span > VPCodecConfiguration::COLOR_SPACE_SRGB;< / div >
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   < span class = "keywordflow" > default< / span > :< / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   LOG(WARNING) < < < span class = "stringliteral" > " Unknown color space: " < / span > < < < span class = "keyword" > static_cast< < / span > < span class = "keywordtype" > int< / span > < span class = "keyword" > > < / span > (color_space);< / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   < span class = "keywordflow" > return< / span > VPCodecConfiguration::COLOR_SPACE_UNSPECIFIED;< / 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 >   }< / div >
< div class = "line" > < a name = "l00200" > < / a > < span class = "lineno" > 200< / span >   < / div >
< div class = "line" > < a name = "l00201" > < / a > < span class = "lineno" > 201< / span >   VPCodecConfiguration::ChromaSubsampling GetChromaSubsampling(< / div >
< div class = "line" > < a name = "l00202" > < / a > < span class = "lineno" > 202< / span >   uint8_t subsampling) {< / div >
< div class = "line" > < a name = "l00203" > < / a > < span class = "lineno" > 203< / span >   < span class = "keywordflow" > switch< / span > (subsampling) {< / div >
< div class = "line" > < a name = "l00204" > < / a > < span class = "lineno" > 204< / span >   < span class = "keywordflow" > case< / span > 0:< / div >
< div class = "line" > < a name = "l00205" > < / a > < span class = "lineno" > 205< / span >   < span class = "keywordflow" > return< / span > VPCodecConfiguration::CHROMA_444;< / div >
< div class = "line" > < a name = "l00206" > < / a > < span class = "lineno" > 206< / span >   < span class = "keywordflow" > case< / span > 1:< / div >
< div class = "line" > < a name = "l00207" > < / a > < span class = "lineno" > 207< / span >   < span class = "keywordflow" > return< / span > VPCodecConfiguration::CHROMA_440;< / div >
< div class = "line" > < a name = "l00208" > < / a > < span class = "lineno" > 208< / span >   < span class = "keywordflow" > case< / span > 2:< / div >
< div class = "line" > < a name = "l00209" > < / a > < span class = "lineno" > 209< / span >   < span class = "keywordflow" > return< / span > VPCodecConfiguration::CHROMA_422;< / div >
< div class = "line" > < a name = "l00210" > < / a > < span class = "lineno" > 210< / span >   < span class = "keywordflow" > case< / span > 3:< / div >
< div class = "line" > < a name = "l00211" > < / a > < span class = "lineno" > 211< / span >   < span class = "comment" > // VP9 assumes that chrome samples are collocated with luma samples if< / span > < / div >
< div class = "line" > < a name = "l00212" > < / a > < span class = "lineno" > 212< / span >   < span class = "comment" > // there is no explicit signaling outside of VP9 bitstream.< / span > < / div >
< div class = "line" > < a name = "l00213" > < / a > < span class = "lineno" > 213< / span >   < span class = "keywordflow" > return< / span > VPCodecConfiguration::CHROMA_420_COLLOCATED_WITH_LUMA;< / div >
< div class = "line" > < a name = "l00214" > < / a > < span class = "lineno" > 214< / span >   < span class = "keywordflow" > default< / span > :< / div >
< div class = "line" > < a name = "l00215" > < / a > < span class = "lineno" > 215< / span >   LOG(WARNING) < < < span class = "stringliteral" > " Unexpected chroma subsampling value: " < / span > < / div >
< div class = "line" > < a name = "l00216" > < / a > < span class = "lineno" > 216< / span >   < < < span class = "keyword" > static_cast< < / span > < span class = "keywordtype" > int< / span > < span class = "keyword" > > < / span > (subsampling);< / div >
< div class = "line" > < a name = "l00217" > < / a > < span class = "lineno" > 217< / span >   < span class = "keywordflow" > return< / span > VPCodecConfiguration::CHROMA_420_COLLOCATED_WITH_LUMA;< / div >
< div class = "line" > < a name = "l00218" > < / a > < span class = "lineno" > 218< / span >   }< / div >
< div class = "line" > < a name = "l00219" > < / a > < span class = "lineno" > 219< / span >   }< / div >
< div class = "line" > < a name = "l00220" > < / a > < span class = "lineno" > 220< / span >   < / div >
< div class = "line" > < a name = "l00221" > < / a > < span class = "lineno" > 221< / span >   < span class = "keywordtype" > bool< / span > ReadBitDepthAndColorSpace(VP9BitReader* reader,< / div >
< div class = "line" > < a name = "l00222" > < / a > < span class = "lineno" > 222< / span >   VPCodecConfiguration* codec_config) {< / div >
< div class = "line" > < a name = "l00223" > < / a > < span class = "lineno" > 223< / span >   uint8_t bit_depth = 8;< / div >
< div class = "line" > < a name = "l00224" > < / a > < span class = "lineno" > 224< / span >   < span class = "keywordflow" > if< / span > (codec_config-> profile() > = 2) {< / div >
< div class = "line" > < a name = "l00225" > < / a > < span class = "lineno" > 225< / span >   < span class = "keywordtype" > bool< / span > use_vpx_bits_12;< / div >
< div class = "line" > < a name = "l00226" > < / a > < span class = "lineno" > 226< / span >   RCHECK(reader-> ReadBits(1, & use_vpx_bits_12));< / div >
< div class = "line" > < a name = "l00227" > < / a > < span class = "lineno" > 227< / span >   bit_depth = use_vpx_bits_12 ? 12 : 10;< / div >
< div class = "line" > < a name = "l00228" > < / a > < span class = "lineno" > 228< / span >   }< / div >
< div class = "line" > < a name = "l00229" > < / a > < span class = "lineno" > 229< / span >   codec_config-> set_bit_depth(bit_depth);< / div >
< div class = "line" > < a name = "l00230" > < / a > < span class = "lineno" > 230< / span >   < / div >
< div class = "line" > < a name = "l00231" > < / a > < span class = "lineno" > 231< / span >   uint8_t color_space;< / div >
< div class = "line" > < a name = "l00232" > < / a > < span class = "lineno" > 232< / span >   RCHECK(reader-> ReadBits(3, & color_space));< / div >
< div class = "line" > < a name = "l00233" > < / a > < span class = "lineno" > 233< / span >   codec_config-> set_color_space(GetColorSpace(color_space));< / div >
< div class = "line" > < a name = "l00234" > < / a > < span class = "lineno" > 234< / span >   < / div >
< div class = "line" > < a name = "l00235" > < / a > < span class = "lineno" > 235< / span >   < span class = "keywordtype" > bool< / span > yuv_full_range = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00236" > < / a > < span class = "lineno" > 236< / span >   < span class = "keyword" > auto< / span > chroma_subsampling = VPCodecConfiguration::CHROMA_444;< / div >
< div class = "line" > < a name = "l00237" > < / a > < span class = "lineno" > 237< / span >   < span class = "keywordflow" > if< / span > (color_space != VPX_COLOR_SPACE_SRGB) {< / div >
< div class = "line" > < a name = "l00238" > < / a > < span class = "lineno" > 238< / span >   RCHECK(reader-> ReadBits(1, & yuv_full_range));< / 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" > if< / span > (codec_config-> profile() & 1) {< / div >
< div class = "line" > < a name = "l00241" > < / a > < span class = "lineno" > 241< / span >   uint8_t subsampling;< / div >
< div class = "line" > < a name = "l00242" > < / a > < span class = "lineno" > 242< / span >   RCHECK(reader-> ReadBits(2, & subsampling));< / div >
< div class = "line" > < a name = "l00243" > < / a > < span class = "lineno" > 243< / span >   chroma_subsampling = GetChromaSubsampling(subsampling);< / div >
< div class = "line" > < a name = "l00244" > < / a > < span class = "lineno" > 244< / span >   < span class = "keywordflow" > if< / span > (chroma_subsampling ==< / div >
< div class = "line" > < a name = "l00245" > < / a > < span class = "lineno" > 245< / span >   VPCodecConfiguration::CHROMA_420_COLLOCATED_WITH_LUMA) {< / div >
< div class = "line" > < a name = "l00246" > < / a > < span class = "lineno" > 246< / span >   LOG(ERROR) < < < span class = "stringliteral" > " 4:2:0 color not supported in profile " < / span > < / div >
< div class = "line" > < a name = "l00247" > < / a > < span class = "lineno" > 247< / span >   < < codec_config-> profile();< / div >
< div class = "line" > < a name = "l00248" > < / a > < span class = "lineno" > 248< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00249" > < / a > < span class = "lineno" > 249< / span >   }< / 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 = "keywordtype" > bool< / span > reserved;< / div >
< div class = "line" > < a name = "l00252" > < / a > < span class = "lineno" > 252< / span >   RCHECK(reader-> ReadBits(1, & reserved));< / div >
< div class = "line" > < a name = "l00253" > < / a > < span class = "lineno" > 253< / span >   RCHECK(!reserved);< / div >
< div class = "line" > < a name = "l00254" > < / a > < span class = "lineno" > 254< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00255" > < / a > < span class = "lineno" > 255< / span >   chroma_subsampling =< / div >
< div class = "line" > < a name = "l00256" > < / a > < span class = "lineno" > 256< / span >   VPCodecConfiguration::CHROMA_420_COLLOCATED_WITH_LUMA;< / div >
< div class = "line" > < a name = "l00257" > < / a > < span class = "lineno" > 257< / span >   }< / div >
< div class = "line" > < a name = "l00258" > < / a > < span class = "lineno" > 258< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00259" > < / a > < span class = "lineno" > 259< / span >   < span class = "comment" > // Assume 4:4:4 for colorspace SRGB.< / span > < / div >
< div class = "line" > < a name = "l00260" > < / a > < span class = "lineno" > 260< / span >   chroma_subsampling = VPCodecConfiguration::CHROMA_444;< / div >
< div class = "line" > < a name = "l00261" > < / a > < span class = "lineno" > 261< / span >   < span class = "keywordflow" > if< / span > (codec_config-> profile() & 1) {< / div >
< div class = "line" > < a name = "l00262" > < / a > < span class = "lineno" > 262< / span >   < span class = "keywordtype" > bool< / span > reserved;< / div >
< div class = "line" > < a name = "l00263" > < / a > < span class = "lineno" > 263< / span >   RCHECK(reader-> ReadBits(1, & reserved));< / div >
< div class = "line" > < a name = "l00264" > < / a > < span class = "lineno" > 264< / span >   RCHECK(!reserved);< / div >
< div class = "line" > < a name = "l00265" > < / a > < span class = "lineno" > 265< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00266" > < / a > < span class = "lineno" > 266< / span >   LOG(ERROR) < < < span class = "stringliteral" > " 4:4:4 color not supported in profile 0 or 2." < / span > ;< / div >
< div class = "line" > < a name = "l00267" > < / a > < span class = "lineno" > 267< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00268" > < / a > < span class = "lineno" > 268< / span >   }< / div >
< div class = "line" > < a name = "l00269" > < / a > < span class = "lineno" > 269< / span >   }< / div >
< div class = "line" > < a name = "l00270" > < / a > < span class = "lineno" > 270< / span >   codec_config-> set_video_full_range_flag(yuv_full_range);< / div >
< div class = "line" > < a name = "l00271" > < / a > < span class = "lineno" > 271< / span >   codec_config-> set_chroma_subsampling(chroma_subsampling);< / 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 >   VLOG(3) < < < span class = "stringliteral" > " \n profile " < / span > < < < span class = "keyword" > static_cast< < / span > < span class = "keywordtype" > int< / span > < span class = "keyword" > > < / span > (codec_config-> profile())< / div >
< div class = "line" > < a name = "l00274" > < / a > < span class = "lineno" > 274< / span >   < < < span class = "stringliteral" > " \n bit depth " < / span > < < static_cast< int> (codec_config-> bit_depth())< / div >
< div class = "line" > < a name = "l00275" > < / a > < span class = "lineno" > 275< / span >   < < < span class = "stringliteral" > " \n color space " < / span > < < static_cast< int> (codec_config-> color_space())< / div >
< div class = "line" > < a name = "l00276" > < / a > < span class = "lineno" > 276< / span >   < < < span class = "stringliteral" > " \n full_range " < / span > < / div >
< div class = "line" > < a name = "l00277" > < / a > < span class = "lineno" > 277< / span >   < < static_cast< int> (codec_config-> video_full_range_flag())< / div >
< div class = "line" > < a name = "l00278" > < / a > < span class = "lineno" > 278< / span >   < < < span class = "stringliteral" > " \n chroma subsampling " < / span > < / div >
< div class = "line" > < a name = "l00279" > < / a > < span class = "lineno" > 279< / span >   < < static_cast< int> (codec_config-> chroma_subsampling());< / div >
< div class = "line" > < a name = "l00280" > < / a > < span class = "lineno" > 280< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00281" > < / a > < span class = "lineno" > 281< / span >   }< / div >
< div class = "line" > < a name = "l00282" > < / a > < span class = "lineno" > 282< / span >   < / div >
< div class = "line" > < a name = "l00283" > < / a > < span class = "lineno" > 283< / span >   < span class = "keywordtype" > bool< / span > ReadFrameSize(VP9BitReader* reader, uint32_t* width, uint32_t* height) {< / div >
< div class = "line" > < a name = "l00284" > < / a > < span class = "lineno" > 284< / span >   RCHECK(reader-> ReadBits(16, width));< / div >
< div class = "line" > < a name = "l00285" > < / a > < span class = "lineno" > 285< / span >   *width += 1; < span class = "comment" > // Off by 1.< / span > < / div >
< div class = "line" > < a name = "l00286" > < / a > < span class = "lineno" > 286< / span >   RCHECK(reader-> ReadBits(16, height));< / div >
< div class = "line" > < a name = "l00287" > < / a > < span class = "lineno" > 287< / span >   *height += 1; < span class = "comment" > // Off by 1.< / span > < / div >
< div class = "line" > < a name = "l00288" > < / a > < span class = "lineno" > 288< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00289" > < / a > < span class = "lineno" > 289< / 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 >   < span class = "keywordtype" > bool< / span > ReadDisplayFrameSize(VP9BitReader* reader,< / div >
< div class = "line" > < a name = "l00292" > < / a > < span class = "lineno" > 292< / span >   uint32_t* display_width,< / div >
< div class = "line" > < a name = "l00293" > < / a > < span class = "lineno" > 293< / span >   uint32_t* display_height) {< / div >
< div class = "line" > < a name = "l00294" > < / a > < span class = "lineno" > 294< / span >   < span class = "keywordtype" > bool< / span > has_display_size;< / div >
< div class = "line" > < a name = "l00295" > < / a > < span class = "lineno" > 295< / span >   RCHECK(reader-> ReadBits(1, & has_display_size));< / div >
< div class = "line" > < a name = "l00296" > < / a > < span class = "lineno" > 296< / span >   < span class = "keywordflow" > if< / span > (has_display_size)< / div >
< div class = "line" > < a name = "l00297" > < / a > < span class = "lineno" > 297< / span >   RCHECK(ReadFrameSize(reader, display_width, display_height));< / div >
< div class = "line" > < a name = "l00298" > < / a > < span class = "lineno" > 298< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00299" > < / a > < span class = "lineno" > 299< / span >   }< / div >
< div class = "line" > < a name = "l00300" > < / a > < span class = "lineno" > 300< / span >   < / div >
< div class = "line" > < a name = "l00301" > < / a > < span class = "lineno" > 301< / span >   < span class = "keywordtype" > bool< / span > ReadFrameSizes(VP9BitReader* reader, uint32_t* width, uint32_t* height) {< / div >
< div class = "line" > < a name = "l00302" > < / a > < span class = "lineno" > 302< / span >   uint32_t new_width;< / div >
< div class = "line" > < a name = "l00303" > < / a > < span class = "lineno" > 303< / span >   uint32_t new_height;< / div >
< div class = "line" > < a name = "l00304" > < / a > < span class = "lineno" > 304< / span >   RCHECK(ReadFrameSize(reader, & new_width, & new_height));< / div >
< div class = "line" > < a name = "l00305" > < / a > < span class = "lineno" > 305< / span >   < span class = "keywordflow" > if< / span > (new_width != *width) {< / div >
< div class = "line" > < a name = "l00306" > < / a > < span class = "lineno" > 306< / span >   VLOG(1) < < < span class = "stringliteral" > " Width updates from " < / span > < < *width < < < span class = "stringliteral" > " to " < / span > < < new_width;< / div >
< div class = "line" > < a name = "l00307" > < / a > < span class = "lineno" > 307< / span >   *width = new_width;< / div >
< div class = "line" > < a name = "l00308" > < / a > < span class = "lineno" > 308< / span >   }< / div >
< div class = "line" > < a name = "l00309" > < / a > < span class = "lineno" > 309< / span >   < span class = "keywordflow" > if< / span > (new_height != *height) {< / div >
< div class = "line" > < a name = "l00310" > < / a > < span class = "lineno" > 310< / span >   VLOG(1) < < < span class = "stringliteral" > " Height updates from " < / span > < < *height < < < span class = "stringliteral" > " to " < / span > < < new_height;< / div >
< div class = "line" > < a name = "l00311" > < / a > < span class = "lineno" > 311< / span >   *height = new_height;< / div >
< div class = "line" > < a name = "l00312" > < / a > < span class = "lineno" > 312< / span >   }< / div >
< div class = "line" > < a name = "l00313" > < / a > < span class = "lineno" > 313< / span >   < / div >
< div class = "line" > < a name = "l00314" > < / a > < span class = "lineno" > 314< / span >   uint32_t display_width = *width;< / div >
< div class = "line" > < a name = "l00315" > < / a > < span class = "lineno" > 315< / span >   uint32_t display_height = *height;< / div >
< div class = "line" > < a name = "l00316" > < / a > < span class = "lineno" > 316< / span >   RCHECK(ReadDisplayFrameSize(reader, & display_width, & display_height));< / div >
< div class = "line" > < a name = "l00317" > < / a > < span class = "lineno" > 317< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00318" > < / a > < span class = "lineno" > 318< / span >   }< / div >
< div class = "line" > < a name = "l00319" > < / a > < span class = "lineno" > 319< / span >   < / div >
< div class = "line" > < a name = "l00320" > < / a > < span class = "lineno" > 320< / span >   < span class = "keywordtype" > bool< / span > ReadFrameSizesWithRefs(VP9BitReader* reader,< / div >
< div class = "line" > < a name = "l00321" > < / a > < span class = "lineno" > 321< / span >   uint32_t* width,< / div >
< div class = "line" > < a name = "l00322" > < / a > < span class = "lineno" > 322< / span >   uint32_t* height) {< / div >
< div class = "line" > < a name = "l00323" > < / a > < span class = "lineno" > 323< / span >   < span class = "keywordtype" > bool< / span > found = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00324" > < / a > < span class = "lineno" > 324< / span >   < span class = "keywordflow" > for< / span > (uint32_t i = 0; i < REFS_PER_FRAME; ++i) {< / div >
< div class = "line" > < a name = "l00325" > < / a > < span class = "lineno" > 325< / span >   RCHECK(reader-> ReadBits(1, & found));< / div >
< div class = "line" > < a name = "l00326" > < / a > < span class = "lineno" > 326< / span >   < span class = "keywordflow" > if< / span > (found)< / div >
< div class = "line" > < a name = "l00327" > < / a > < span class = "lineno" > 327< / span >   < span class = "keywordflow" > break< / 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 = "keywordflow" > if< / span > (!found) {< / div >
< div class = "line" > < a name = "l00330" > < / a > < span class = "lineno" > 330< / span >   RCHECK(ReadFrameSizes(reader, width, height));< / div >
< div class = "line" > < a name = "l00331" > < / a > < span class = "lineno" > 331< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00332" > < / a > < span class = "lineno" > 332< / span >   uint32_t display_width;< / div >
< div class = "line" > < a name = "l00333" > < / a > < span class = "lineno" > 333< / span >   uint32_t display_height;< / div >
< div class = "line" > < a name = "l00334" > < / a > < span class = "lineno" > 334< / span >   RCHECK(ReadDisplayFrameSize(reader, & display_width, & display_height));< / 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 >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00337" > < / a > < span class = "lineno" > 337< / span >   }< / div >
< div class = "line" > < a name = "l00338" > < / a > < span class = "lineno" > 338< / span >   < / div >
< div class = "line" > < a name = "l00339" > < / a > < span class = "lineno" > 339< / span >   < span class = "keywordtype" > bool< / span > ReadLoopFilter(VP9BitReader* reader) {< / div >
< div class = "line" > < a name = "l00340" > < / a > < span class = "lineno" > 340< / span >   RCHECK(reader-> SkipBits(9)); < span class = "comment" > // filter_evel, sharness_level< / span > < / div >
< div class = "line" > < a name = "l00341" > < / a > < span class = "lineno" > 341< / span >   < span class = "keywordtype" > bool< / span > mode_ref_delta_enabled;< / div >
< div class = "line" > < a name = "l00342" > < / a > < span class = "lineno" > 342< / span >   RCHECK(reader-> ReadBits(1, & mode_ref_delta_enabled));< / div >
< div class = "line" > < a name = "l00343" > < / a > < span class = "lineno" > 343< / span >   < span class = "keywordflow" > if< / span > (!mode_ref_delta_enabled)< / div >
< div class = "line" > < a name = "l00344" > < / a > < span class = "lineno" > 344< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00345" > < / a > < span class = "lineno" > 345< / span >   < span class = "keywordtype" > bool< / span > mode_ref_delta_update;< / div >
< div class = "line" > < a name = "l00346" > < / a > < span class = "lineno" > 346< / span >   RCHECK(reader-> ReadBits(1, & mode_ref_delta_update));< / div >
< div class = "line" > < a name = "l00347" > < / a > < span class = "lineno" > 347< / span >   < span class = "keywordflow" > if< / span > (!mode_ref_delta_update) < 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 >   < span class = "keywordflow" > for< / span > (uint32_t i = 0; i < MAX_REF_LF_DELTAS + MAX_MODE_LF_DELTAS; ++i)< / div >
< div class = "line" > < a name = "l00350" > < / a > < span class = "lineno" > 350< / span >   RCHECK(reader-> SkipBitsConditional(6 + 1));< / div >
< div class = "line" > < a name = "l00351" > < / a > < span class = "lineno" > 351< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00352" > < / a > < span class = "lineno" > 352< / span >   }< / div >
< div class = "line" > < a name = "l00353" > < / a > < span class = "lineno" > 353< / span >   < / div >
< div class = "line" > < a name = "l00354" > < / a > < span class = "lineno" > 354< / span >   < span class = "keywordtype" > bool< / span > ReadQuantization(VP9BitReader* reader) {< / div >
< div class = "line" > < a name = "l00355" > < / a > < span class = "lineno" > 355< / span >   RCHECK(reader-> SkipBits(QINDEX_BITS));< / div >
< div class = "line" > < a name = "l00356" > < / a > < span class = "lineno" > 356< / span >   < span class = "comment" > // Skip delta_q bits.< / span > < / div >
< div class = "line" > < a name = "l00357" > < / a > < span class = "lineno" > 357< / span >   < span class = "keywordflow" > for< / span > (uint32_t i = 0; i < 3; ++i)< / div >
< div class = "line" > < a name = "l00358" > < / a > < span class = "lineno" > 358< / span >   RCHECK(reader-> SkipBitsConditional(4 + 1));< / div >
< div class = "line" > < a name = "l00359" > < / a > < span class = "lineno" > 359< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00360" > < / a > < span class = "lineno" > 360< / span >   }< / div >
< div class = "line" > < a name = "l00361" > < / a > < span class = "lineno" > 361< / span >   < / div >
< div class = "line" > < a name = "l00362" > < / a > < span class = "lineno" > 362< / span >   < span class = "keywordtype" > bool< / span > ReadSegmentation(VP9BitReader* reader) {< / div >
< div class = "line" > < a name = "l00363" > < / a > < span class = "lineno" > 363< / span >   < span class = "keywordtype" > bool< / span > enabled;< / div >
< div class = "line" > < a name = "l00364" > < / a > < span class = "lineno" > 364< / span >   RCHECK(reader-> ReadBits(1, & enabled));< / div >
< div class = "line" > < a name = "l00365" > < / a > < span class = "lineno" > 365< / span >   < span class = "keywordflow" > if< / span > (!enabled)< / div >
< div class = "line" > < a name = "l00366" > < / a > < span class = "lineno" > 366< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00367" > < / a > < span class = "lineno" > 367< / span >   < / div >
< div class = "line" > < a name = "l00368" > < / a > < span class = "lineno" > 368< / span >   < span class = "keywordtype" > bool< / span > update_map;< / div >
< div class = "line" > < a name = "l00369" > < / a > < span class = "lineno" > 369< / span >   RCHECK(reader-> ReadBits(1, & update_map));< / div >
< div class = "line" > < a name = "l00370" > < / a > < span class = "lineno" > 370< / span >   < span class = "keywordflow" > if< / span > (update_map) {< / div >
< div class = "line" > < a name = "l00371" > < / a > < span class = "lineno" > 371< / span >   < span class = "keywordflow" > for< / span > (uint32_t i = 0; i < SEG_TREE_PROBS; ++i) {< / div >
< div class = "line" > < a name = "l00372" > < / a > < span class = "lineno" > 372< / span >   RCHECK(reader-> SkipBitsConditional(8));< / div >
< div class = "line" > < a name = "l00373" > < / a > < span class = "lineno" > 373< / span >   < / div >
< div class = "line" > < a name = "l00374" > < / a > < span class = "lineno" > 374< / span >   < span class = "keywordtype" > bool< / span > temporal_update;< / div >
< div class = "line" > < a name = "l00375" > < / a > < span class = "lineno" > 375< / span >   RCHECK(reader-> ReadBits(1, & temporal_update));< / div >
< div class = "line" > < a name = "l00376" > < / a > < span class = "lineno" > 376< / span >   < span class = "keywordflow" > if< / span > (temporal_update) {< / div >
< div class = "line" > < a name = "l00377" > < / a > < span class = "lineno" > 377< / span >   < span class = "keywordflow" > for< / span > (uint32_t j = 0; j < PREDICTION_PROBS; ++j)< / div >
< div class = "line" > < a name = "l00378" > < / a > < span class = "lineno" > 378< / span >   RCHECK(reader-> SkipBitsConditional(8));< / div >
< div class = "line" > < a name = "l00379" > < / a > < span class = "lineno" > 379< / span >   }< / div >
< div class = "line" > < a name = "l00380" > < / a > < span class = "lineno" > 380< / span >   }< / div >
< div class = "line" > < a name = "l00381" > < / a > < span class = "lineno" > 381< / span >   }< / 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 = "keywordtype" > bool< / span > update_data;< / div >
< div class = "line" > < a name = "l00384" > < / a > < span class = "lineno" > 384< / span >   RCHECK(reader-> ReadBits(1, & update_data));< / div >
< div class = "line" > < a name = "l00385" > < / a > < span class = "lineno" > 385< / span >   < span class = "keywordflow" > if< / span > (update_data) {< / div >
< div class = "line" > < a name = "l00386" > < / a > < span class = "lineno" > 386< / span >   RCHECK(reader-> SkipBits(1)); < span class = "comment" > // abs_delta< / span > < / div >
< div class = "line" > < a name = "l00387" > < / a > < span class = "lineno" > 387< / span >   < span class = "keywordflow" > for< / span > (uint32_t i = 0; i < MAX_SEGMENTS; ++i) {< / div >
< div class = "line" > < a name = "l00388" > < / a > < span class = "lineno" > 388< / span >   < span class = "keywordflow" > for< / span > (uint32_t j = 0; j < SEG_LVL_MAX; ++j) {< / div >
< div class = "line" > < a name = "l00389" > < / a > < span class = "lineno" > 389< / span >   < span class = "keywordtype" > bool< / span > feature_enabled;< / div >
< div class = "line" > < a name = "l00390" > < / a > < span class = "lineno" > 390< / span >   RCHECK(reader-> ReadBits(1, & feature_enabled));< / div >
< div class = "line" > < a name = "l00391" > < / a > < span class = "lineno" > 391< / span >   < span class = "keywordflow" > if< / span > (feature_enabled) {< / div >
< div class = "line" > < a name = "l00392" > < / a > < span class = "lineno" > 392< / span >   RCHECK(reader-> SkipBits(SEG_FEATURE_DATA_MAX_BITS[j]));< / div >
< div class = "line" > < a name = "l00393" > < / a > < span class = "lineno" > 393< / span >   < span class = "keywordflow" > if< / span > (SEG_FEATURE_DATA_SIGNED[j])< / div >
< div class = "line" > < a name = "l00394" > < / a > < span class = "lineno" > 394< / span >   RCHECK(reader-> SkipBits(1)); < span class = "comment" > // signness< / span > < / div >
< div class = "line" > < a name = "l00395" > < / a > < span class = "lineno" > 395< / span >   }< / div >
< div class = "line" > < a name = "l00396" > < / a > < span class = "lineno" > 396< / span >   }< / div >
< div class = "line" > < a name = "l00397" > < / a > < span class = "lineno" > 397< / span >   }< / div >
< div class = "line" > < a name = "l00398" > < / a > < span class = "lineno" > 398< / span >   }< / div >
< div class = "line" > < a name = "l00399" > < / a > < span class = "lineno" > 399< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00400" > < / a > < span class = "lineno" > 400< / span >   }< / div >
< div class = "line" > < a name = "l00401" > < / a > < span class = "lineno" > 401< / span >   < / div >
< div class = "line" > < a name = "l00402" > < / a > < span class = "lineno" > 402< / span >   < span class = "keywordtype" > bool< / span > ReadTileInfo(uint32_t width, VP9BitReader* reader) {< / div >
< div class = "line" > < a name = "l00403" > < / a > < span class = "lineno" > 403< / span >   uint32_t mi_cols = GetNumMiUnits(width);< / div >
< div class = "line" > < a name = "l00404" > < / a > < span class = "lineno" > 404< / span >   < / div >
< div class = "line" > < a name = "l00405" > < / a > < span class = "lineno" > 405< / span >   uint32_t min_log2_tile_cols;< / div >
< div class = "line" > < a name = "l00406" > < / a > < span class = "lineno" > 406< / span >   uint32_t max_log2_tile_cols;< / div >
< div class = "line" > < a name = "l00407" > < / a > < span class = "lineno" > 407< / span >   GetTileNBits(mi_cols, & min_log2_tile_cols, & max_log2_tile_cols);< / div >
< div class = "line" > < a name = "l00408" > < / a > < span class = "lineno" > 408< / span >   uint32_t max_ones = max_log2_tile_cols - min_log2_tile_cols;< / div >
< div class = "line" > < a name = "l00409" > < / a > < span class = "lineno" > 409< / span >   < / div >
< div class = "line" > < a name = "l00410" > < / a > < span class = "lineno" > 410< / span >   uint32_t log2_tile_cols = min_log2_tile_cols;< / div >
< div class = "line" > < a name = "l00411" > < / a > < span class = "lineno" > 411< / span >   < span class = "keywordflow" > while< / span > (max_ones--) {< / div >
< div class = "line" > < a name = "l00412" > < / a > < span class = "lineno" > 412< / span >   < span class = "keywordtype" > bool< / span > has_more;< / div >
< div class = "line" > < a name = "l00413" > < / a > < span class = "lineno" > 413< / span >   RCHECK(reader-> ReadBits(1, & has_more));< / div >
< div class = "line" > < a name = "l00414" > < / a > < span class = "lineno" > 414< / span >   < span class = "keywordflow" > if< / span > (!has_more)< / div >
< div class = "line" > < a name = "l00415" > < / a > < span class = "lineno" > 415< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00416" > < / a > < span class = "lineno" > 416< / span >   ++log2_tile_cols;< / div >
< div class = "line" > < a name = "l00417" > < / a > < span class = "lineno" > 417< / span >   }< / div >
< div class = "line" > < a name = "l00418" > < / a > < span class = "lineno" > 418< / span >   RCHECK(log2_tile_cols < = 6);< / div >
< div class = "line" > < a name = "l00419" > < / a > < span class = "lineno" > 419< / span >   < / div >
< div class = "line" > < a name = "l00420" > < / a > < span class = "lineno" > 420< / span >   RCHECK(reader-> SkipBitsConditional(1)); < span class = "comment" > // log2_tile_rows< / span > < / div >
< div class = "line" > < a name = "l00421" > < / a > < span class = "lineno" > 421< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00422" > < / a > < span class = "lineno" > 422< / span >   }< / div >
< div class = "line" > < a name = "l00423" > < / a > < span class = "lineno" > 423< / span >   < / div >
< div class = "line" > < a name = "l00424" > < / a > < span class = "lineno" > 424< / span >   } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a name = "l00425" > < / a > < span class = "lineno" > 425< / span >   < / div >
< div class = "line" > < a name = "l00426" > < / a > < span class = "lineno" > 426< / span >   VP9Parser::VP9Parser() : width_(0), height_(0) {}< / div >
< div class = "line" > < a name = "l00427" > < / a > < span class = "lineno" > 427< / span >   VP9Parser::~VP9Parser() {}< / div >
< div class = "line" > < a name = "l00428" > < / a > < span class = "lineno" > 428< / span >   < / div >
< div class = "line" > < a name = "l00429" > < / a > < span class = "lineno" > < a class = "line" href = "../../da/d5f/classedash__packager_1_1media_1_1VP9Parser.html#a7c61f40d159dfe7a47a231bef45a9ec0" > 429< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "../../da/d5f/classedash__packager_1_1media_1_1VP9Parser.html#a7c61f40d159dfe7a47a231bef45a9ec0" > VP9Parser::Parse< / a > (< span class = "keyword" > const< / span > uint8_t* data,< / div >
< div class = "line" > < a name = "l00430" > < / a > < span class = "lineno" > 430< / span >   < span class = "keywordtype" > size_t< / span > data_size,< / div >
< div class = "line" > < a name = "l00431" > < / a > < span class = "lineno" > 431< / span >   std::vector< VPxFrameInfo> * vpx_frames) {< / div >
< div class = "line" > < a name = "l00432" > < / a > < span class = "lineno" > 432< / span >   DCHECK(data);< / div >
< div class = "line" > < a name = "l00433" > < / a > < span class = "lineno" > 433< / span >   DCHECK(vpx_frames);< / div >
< div class = "line" > < a name = "l00434" > < / a > < span class = "lineno" > 434< / span >   RCHECK(ParseIfSuperframeIndex(data, data_size, vpx_frames));< / div >
< div class = "line" > < a name = "l00435" > < / a > < span class = "lineno" > 435< / span >   < / div >
< div class = "line" > < a name = "l00436" > < / a > < span class = "lineno" > 436< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > auto< / span > & vpx_frame : *vpx_frames) {< / div >
< div class = "line" > < a name = "l00437" > < / a > < span class = "lineno" > 437< / span >   VLOG(4) < < < span class = "stringliteral" > " process frame with size " < / span > < < vpx_frame.frame_size;< / div >
< div class = "line" > < a name = "l00438" > < / a > < span class = "lineno" > 438< / span >   VP9BitReader reader(data, vpx_frame.frame_size);< / div >
< div class = "line" > < a name = "l00439" > < / a > < span class = "lineno" > 439< / span >   uint8_t frame_marker;< / div >
< div class = "line" > < a name = "l00440" > < / a > < span class = "lineno" > 440< / span >   RCHECK(reader.ReadBits(2, & frame_marker));< / div >
< div class = "line" > < a name = "l00441" > < / a > < span class = "lineno" > 441< / span >   RCHECK(frame_marker == VP9_FRAME_MARKER);< / div >
< div class = "line" > < a name = "l00442" > < / a > < span class = "lineno" > 442< / span >   < / div >
< div class = "line" > < a name = "l00443" > < / a > < span class = "lineno" > 443< / span >   RCHECK(ReadProfile(& reader, & codec_config_));< / div >
< div class = "line" > < a name = "l00444" > < / a > < span class = "lineno" > 444< / span >   < / div >
< div class = "line" > < a name = "l00445" > < / a > < span class = "lineno" > 445< / span >   < span class = "keywordtype" > bool< / span > show_existing_frame;< / div >
< div class = "line" > < a name = "l00446" > < / a > < span class = "lineno" > 446< / span >   RCHECK(reader.ReadBits(1, & show_existing_frame));< / div >
< div class = "line" > < a name = "l00447" > < / a > < span class = "lineno" > 447< / span >   < span class = "keywordflow" > if< / span > (show_existing_frame) {< / div >
< div class = "line" > < a name = "l00448" > < / a > < span class = "lineno" > 448< / span >   RCHECK(reader.SkipBits(3)); < span class = "comment" > // ref_frame_index< / span > < / div >
< div class = "line" > < a name = "l00449" > < / a > < span class = "lineno" > 449< / span >   < span class = "comment" > // End of current frame data. There should be no more bytes available.< / span > < / div >
< div class = "line" > < a name = "l00450" > < / a > < span class = "lineno" > 450< / span >   RCHECK(reader.bits_available() < 8);< / div >
< div class = "line" > < a name = "l00451" > < / a > < span class = "lineno" > 451< / span >   < / div >
< div class = "line" > < a name = "l00452" > < / a > < span class = "lineno" > 452< / span >   vpx_frame.is_key_frame = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00453" > < / a > < span class = "lineno" > 453< / span >   vpx_frame.uncompressed_header_size = vpx_frame.frame_size;< / div >
< div class = "line" > < a name = "l00454" > < / a > < span class = "lineno" > 454< / span >   vpx_frame.width = width_;< / div >
< div class = "line" > < a name = "l00455" > < / a > < span class = "lineno" > 455< / span >   vpx_frame.height = height_;< / div >
< div class = "line" > < a name = "l00456" > < / a > < span class = "lineno" > 456< / span >   < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a name = "l00457" > < / a > < span class = "lineno" > 457< / span >   }< / div >
< div class = "line" > < a name = "l00458" > < / a > < span class = "lineno" > 458< / span >   < / div >
< div class = "line" > < a name = "l00459" > < / a > < span class = "lineno" > 459< / span >   < span class = "keywordtype" > bool< / span > is_inter_frame;< / div >
< div class = "line" > < a name = "l00460" > < / a > < span class = "lineno" > 460< / span >   RCHECK(reader.ReadBits(1, & is_inter_frame));< / div >
< div class = "line" > < a name = "l00461" > < / a > < span class = "lineno" > 461< / span >   vpx_frame.is_key_frame = !is_inter_frame;< / div >
< div class = "line" > < a name = "l00462" > < / a > < span class = "lineno" > 462< / span >   < / div >
< div class = "line" > < a name = "l00463" > < / a > < span class = "lineno" > 463< / span >   < span class = "keywordtype" > bool< / span > show_frame;< / div >
< div class = "line" > < a name = "l00464" > < / a > < span class = "lineno" > 464< / span >   RCHECK(reader.ReadBits(1, & show_frame));< / div >
< div class = "line" > < a name = "l00465" > < / a > < span class = "lineno" > 465< / span >   < span class = "keywordtype" > bool< / span > error_resilient_mode;< / div >
< div class = "line" > < a name = "l00466" > < / a > < span class = "lineno" > 466< / span >   RCHECK(reader.ReadBits(1, & error_resilient_mode));< / div >
< div class = "line" > < a name = "l00467" > < / a > < span class = "lineno" > 467< / span >   < / div >
< div class = "line" > < a name = "l00468" > < / a > < span class = "lineno" > 468< / span >   < span class = "keywordflow" > if< / span > (vpx_frame.is_key_frame) {< / div >
< div class = "line" > < a name = "l00469" > < / a > < span class = "lineno" > 469< / span >   RCHECK(ReadSyncCode(& reader));< / div >
< div class = "line" > < a name = "l00470" > < / a > < span class = "lineno" > 470< / span >   RCHECK(ReadBitDepthAndColorSpace(& reader, & codec_config_));< / div >
< div class = "line" > < a name = "l00471" > < / a > < span class = "lineno" > 471< / span >   RCHECK(ReadFrameSizes(& reader, & width_, & height_));< / div >
< div class = "line" > < a name = "l00472" > < / a > < span class = "lineno" > 472< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00473" > < / a > < span class = "lineno" > 473< / span >   < span class = "keywordtype" > bool< / span > intra_only = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00474" > < / a > < span class = "lineno" > 474< / span >   < span class = "keywordflow" > if< / span > (!show_frame)< / div >
< div class = "line" > < a name = "l00475" > < / a > < span class = "lineno" > 475< / span >   RCHECK(reader.ReadBits(1, & intra_only));< / div >
< div class = "line" > < a name = "l00476" > < / a > < span class = "lineno" > 476< / span >   < span class = "keywordflow" > if< / span > (!error_resilient_mode)< / div >
< div class = "line" > < a name = "l00477" > < / a > < span class = "lineno" > 477< / span >   RCHECK(reader.SkipBits(2)); < span class = "comment" > // reset_frame_context< / span > < / div >
< div class = "line" > < a name = "l00478" > < / a > < span class = "lineno" > 478< / span >   < / div >
< div class = "line" > < a name = "l00479" > < / a > < span class = "lineno" > 479< / span >   < span class = "keywordflow" > if< / span > (intra_only) {< / div >
< div class = "line" > < a name = "l00480" > < / a > < span class = "lineno" > 480< / span >   RCHECK(ReadSyncCode(& reader));< / div >
< div class = "line" > < a name = "l00481" > < / a > < span class = "lineno" > 481< / span >   < span class = "keywordflow" > if< / span > (codec_config_.profile() > 0) {< / div >
< div class = "line" > < a name = "l00482" > < / a > < span class = "lineno" > 482< / span >   RCHECK(ReadBitDepthAndColorSpace(& reader, & codec_config_));< / div >
< div class = "line" > < a name = "l00483" > < / a > < span class = "lineno" > 483< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00484" > < / a > < span class = "lineno" > 484< / span >   < span class = "comment" > // NOTE: The intra-only frame header does not include the< / span > < / div >
< div class = "line" > < a name = "l00485" > < / a > < span class = "lineno" > 485< / span >   < span class = "comment" > // specification of either the color format or color sub-sampling in< / span > < / div >
< div class = "line" > < a name = "l00486" > < / a > < span class = "lineno" > 486< / span >   < span class = "comment" > // profile 0. VP9 specifies that the default color format should be< / span > < / div >
< div class = "line" > < a name = "l00487" > < / a > < span class = "lineno" > 487< / span >   < span class = "comment" > // YUV 4:2:0 in this case (normative).< / span > < / div >
< div class = "line" > < a name = "l00488" > < / a > < span class = "lineno" > 488< / span >   codec_config_.set_chroma_subsampling(< / div >
< div class = "line" > < a name = "l00489" > < / a > < span class = "lineno" > 489< / span >   VPCodecConfiguration::CHROMA_420_COLLOCATED_WITH_LUMA);< / div >
< div class = "line" > < a name = "l00490" > < / a > < span class = "lineno" > 490< / span >   codec_config_.set_bit_depth(8);< / div >
< div class = "line" > < a name = "l00491" > < / a > < span class = "lineno" > 491< / span >   }< / div >
< div class = "line" > < a name = "l00492" > < / a > < span class = "lineno" > 492< / span >   < / div >
< div class = "line" > < a name = "l00493" > < / a > < span class = "lineno" > 493< / span >   RCHECK(reader.SkipBits(REF_FRAMES)); < span class = "comment" > // refresh_frame_flags< / span > < / div >
< div class = "line" > < a name = "l00494" > < / a > < span class = "lineno" > 494< / span >   RCHECK(ReadFrameSizes(& reader, & width_, & height_));< / div >
< div class = "line" > < a name = "l00495" > < / a > < span class = "lineno" > 495< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00496" > < / a > < span class = "lineno" > 496< / span >   RCHECK(reader.SkipBits(REF_FRAMES)); < span class = "comment" > // refresh_frame_flags< / span > < / div >
< div class = "line" > < a name = "l00497" > < / a > < span class = "lineno" > 497< / span >   RCHECK(reader.SkipBits(REFS_PER_FRAME * (REF_FRAMES_LOG2 + 1)));< / div >
< div class = "line" > < a name = "l00498" > < / a > < span class = "lineno" > 498< / span >   < / div >
< div class = "line" > < a name = "l00499" > < / a > < span class = "lineno" > 499< / span >   < span class = "comment" > // TODO(kqyang): We may need to actually build the refs to extract the< / span > < / div >
< div class = "line" > < a name = "l00500" > < / a > < span class = "lineno" > 500< / span >   < span class = "comment" > // correct width and height for the current frame. The width will be< / span > < / div >
< div class = "line" > < a name = "l00501" > < / a > < span class = "lineno" > 501< / span >   < span class = "comment" > // used later in ReadTileInfo.< / span > < / div >
< div class = "line" > < a name = "l00502" > < / a > < span class = "lineno" > 502< / span >   RCHECK(ReadFrameSizesWithRefs(& reader, & width_, & height_));< / div >
< div class = "line" > < a name = "l00503" > < / a > < span class = "lineno" > 503< / span >   < / div >
< div class = "line" > < a name = "l00504" > < / a > < span class = "lineno" > 504< / span >   RCHECK(reader.SkipBits(1)); < span class = "comment" > // allow_high_precision_mv< / span > < / div >
< div class = "line" > < a name = "l00505" > < / a > < span class = "lineno" > 505< / span >   < / div >
< div class = "line" > < a name = "l00506" > < / a > < span class = "lineno" > 506< / span >   < span class = "keywordtype" > bool< / span > interp_filter;< / div >
< div class = "line" > < a name = "l00507" > < / a > < span class = "lineno" > 507< / span >   RCHECK(reader.ReadBits(1, & interp_filter));< / div >
< div class = "line" > < a name = "l00508" > < / a > < span class = "lineno" > 508< / span >   < span class = "keywordflow" > if< / span > (!interp_filter)< / div >
< div class = "line" > < a name = "l00509" > < / a > < span class = "lineno" > 509< / span >   RCHECK(reader.SkipBits(2)); < span class = "comment" > // more interp_filter< / span > < / div >
< div class = "line" > < a name = "l00510" > < / a > < span class = "lineno" > 510< / span >   }< / div >
< div class = "line" > < a name = "l00511" > < / a > < span class = "lineno" > 511< / span >   }< / div >
< div class = "line" > < a name = "l00512" > < / a > < span class = "lineno" > 512< / span >   < / div >
< div class = "line" > < a name = "l00513" > < / a > < span class = "lineno" > 513< / span >   < span class = "keywordflow" > if< / span > (!error_resilient_mode) {< / div >
< div class = "line" > < a name = "l00514" > < / a > < span class = "lineno" > 514< / span >   RCHECK(reader.SkipBits(1)); < span class = "comment" > // refresh_frame_context< / span > < / div >
< div class = "line" > < a name = "l00515" > < / a > < span class = "lineno" > 515< / span >   RCHECK(reader.SkipBits(1)); < span class = "comment" > // frame_parallel_decoding_mode< / span > < / div >
< div class = "line" > < a name = "l00516" > < / a > < span class = "lineno" > 516< / span >   }< / div >
< div class = "line" > < a name = "l00517" > < / a > < span class = "lineno" > 517< / span >   RCHECK(reader.SkipBits(FRAME_CONTEXTS_LOG2)); < span class = "comment" > // frame_context_idx< / span > < / div >
< div class = "line" > < a name = "l00518" > < / a > < span class = "lineno" > 518< / span >   < / div >
< div class = "line" > < a name = "l00519" > < / a > < span class = "lineno" > 519< / span >   VLOG(4) < < < span class = "stringliteral" > " bit offset: " < / span > < / div >
< div class = "line" > < a name = "l00520" > < / a > < span class = "lineno" > 520< / span >   < < vpx_frame.frame_size * 8 - reader.bits_available();< / div >
< div class = "line" > < a name = "l00521" > < / a > < span class = "lineno" > 521< / span >   RCHECK(ReadLoopFilter(& reader));< / div >
< div class = "line" > < a name = "l00522" > < / a > < span class = "lineno" > 522< / span >   RCHECK(ReadQuantization(& reader));< / div >
< div class = "line" > < a name = "l00523" > < / a > < span class = "lineno" > 523< / span >   RCHECK(ReadSegmentation(& reader));< / div >
< div class = "line" > < a name = "l00524" > < / a > < span class = "lineno" > 524< / span >   RCHECK(ReadTileInfo(width_, & reader));< / div >
< div class = "line" > < a name = "l00525" > < / a > < span class = "lineno" > 525< / span >   < / div >
< div class = "line" > < a name = "l00526" > < / a > < span class = "lineno" > 526< / span >   uint16_t first_partition_size;< / div >
< div class = "line" > < a name = "l00527" > < / a > < span class = "lineno" > 527< / span >   RCHECK(reader.ReadBits(16, & first_partition_size));< / div >
< div class = "line" > < a name = "l00528" > < / a > < span class = "lineno" > 528< / span >   vpx_frame.uncompressed_header_size =< / div >
< div class = "line" > < a name = "l00529" > < / a > < span class = "lineno" > 529< / span >   vpx_frame.frame_size - reader.bits_available() / 8;< / div >
< div class = "line" > < a name = "l00530" > < / a > < span class = "lineno" > 530< / span >   vpx_frame.width = width_;< / div >
< div class = "line" > < a name = "l00531" > < / a > < span class = "lineno" > 531< / span >   vpx_frame.height = height_;< / div >
< div class = "line" > < a name = "l00532" > < / a > < span class = "lineno" > 532< / span >   < / div >
< div class = "line" > < a name = "l00533" > < / a > < span class = "lineno" > 533< / span >   VLOG(3) < < < span class = "stringliteral" > " \n frame_size: " < / span > < < vpx_frame.frame_size< / div >
< div class = "line" > < a name = "l00534" > < / a > < span class = "lineno" > 534< / span >   < < < span class = "stringliteral" > " \n header_size: " < / span > < < vpx_frame.uncompressed_header_size< / div >
< div class = "line" > < a name = "l00535" > < / a > < span class = "lineno" > 535< / span >   < < < span class = "stringliteral" > " \n bits_read: " < / span > < / div >
< div class = "line" > < a name = "l00536" > < / a > < span class = "lineno" > 536< / span >   < < vpx_frame.frame_size * 8 - reader.bits_available()< / div >
< div class = "line" > < a name = "l00537" > < / a > < span class = "lineno" > 537< / span >   < < < span class = "stringliteral" > " \n first_partition_size: " < / span > < < first_partition_size;< / div >
< div class = "line" > < a name = "l00538" > < / a > < span class = "lineno" > 538< / span >   < / div >
< div class = "line" > < a name = "l00539" > < / a > < span class = "lineno" > 539< / span >   RCHECK(first_partition_size > 0);< / div >
< div class = "line" > < a name = "l00540" > < / a > < span class = "lineno" > 540< / span >   RCHECK(first_partition_size * 8 < = reader.bits_available());< / div >
< div class = "line" > < a name = "l00541" > < / a > < span class = "lineno" > 541< / span >   < / div >
< div class = "line" > < a name = "l00542" > < / a > < span class = "lineno" > 542< / span >   data += vpx_frame.frame_size;< / div >
< div class = "line" > < a name = "l00543" > < / a > < span class = "lineno" > 543< / span >   }< / div >
< div class = "line" > < a name = "l00544" > < / a > < span class = "lineno" > 544< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00545" > < / a > < span class = "lineno" > 545< / span >   }< / div >
< div class = "line" > < a name = "l00546" > < / a > < span class = "lineno" > 546< / span >   < / div >
< div class = "line" > < a name = "l00547" > < / a > < span class = "lineno" > 547< / span >   } < span class = "comment" > // namespace media< / span > < / div >
< div class = "line" > < a name = "l00548" > < / a > < span class = "lineno" > 548< / span >   } < span class = "comment" > // namespace edash_packager< / span > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1VP9Parser_html_a7c61f40d159dfe7a47a231bef45a9ec0" > < div class = "ttname" > < a href = "../../da/d5f/classedash__packager_1_1media_1_1VP9Parser.html#a7c61f40d159dfe7a47a231bef45a9ec0" > edash_packager::media::VP9Parser::Parse< / a > < / div > < div class = "ttdeci" > bool Parse(const uint8_t *data, size_t data_size, std::vector< VPxFrameInfo > *vpx_frames)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d8a/vp9__parser_8cc_source.html#l00429" > vp9_parser.cc:429< / a > < / div > < / div >
< / div > <!-- fragment --> < / div > <!-- contents -->
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