Add pps id and sps id parsing to the h.264 depacketizer.

webrtc/common_video/h264/sps_parser.cc

 /*
  *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include "webrtc/common_video/h264/sps_parser.h"
 
+#include <memory>
+
 #include "webrtc/common_video/h264/h264_common.h"
 #include "webrtc/base/bitbuffer.h"
 #include "webrtc/base/bytebuffer.h"
 #include "webrtc/base/logging.h"
 
 typedef rtc::Optional<webrtc::SpsParser::SpsState> OptionalSps;
 
 #define RETURN_EMPTY_ON_FAIL(x) \
   if (!(x)) {                   \
     return OptionalSps();       \
@@ skipping 38 matching lines @@
   // profile_idc: u(8). We need it to determine if we need to read/skip chroma
   // formats.
   uint8_t profile_idc;
   RETURN_EMPTY_ON_FAIL(buffer->ReadUInt8(&profile_idc));
   // constraint_set0_flag through constraint_set5_flag + reserved_zero_2bits
   // 1 bit each for the flags + 2 bits = 8 bits = 1 byte.
   RETURN_EMPTY_ON_FAIL(buffer->ConsumeBytes(1));
   // level_idc: u(8)
   RETURN_EMPTY_ON_FAIL(buffer->ConsumeBytes(1));
   // seq_parameter_set_id: ue(v)
-  RETURN_EMPTY_ON_FAIL(buffer->ReadExponentialGolomb(&golomb_ignored));
+  RETURN_EMPTY_ON_FAIL(buffer->ReadExponentialGolomb(&sps.id));
   sps.separate_colour_plane_flag = 0;
   // See if profile_idc has chroma format information.
   if (profile_idc == 100 || profile_idc == 110 || profile_idc == 122 ||
       profile_idc == 244 || profile_idc == 44 || profile_idc == 83 ||
       profile_idc == 86 || profile_idc == 118 || profile_idc == 128 ||
       profile_idc == 138 || profile_idc == 139 || profile_idc == 134) {
     // chroma_format_idc: ue(v)
     RETURN_EMPTY_ON_FAIL(buffer->ReadExponentialGolomb(&chroma_format_idc));
     if (chroma_format_idc == 3) {
       // separate_colour_plane_flag: u(1)
@@ skipping 128 matching lines @@
     }
   }
   // Subtract the crop for each dimension.
   sps.width -= (frame_crop_left_offset + frame_crop_right_offset);
   sps.height -= (frame_crop_top_offset + frame_crop_bottom_offset);
 
   return OptionalSps(sps);
 }
 
 }  // namespace webrtc