[EXPERIMENTAL] Generic stereo codec with index header sending merged frames

webrtc/modules/video_coding/rtp_frame_reference_finder.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.
  */
 
@@ skipping 82 matching lines @@
       return ManageFrameVp9(frame);
     // Since the EndToEndTests use kVicdeoCodecUnknow we treat it the same as
     // kVideoCodecGeneric.
     // TODO(philipel): Take a look at the EndToEndTests and see if maybe they
     //                 should be changed to use kVideoCodecGeneric instead.
     case kVideoCodecUnknown:
     case kVideoCodecH264:
     case kVideoCodecI420:
     case kVideoCodecGeneric:
       return ManageFrameGeneric(frame, kNoPictureId);
+    case kVideoCodecStereo:
+      return ManageFrameVp9(frame);
   }
 
   // If not all code paths return a value it makes the win compiler sad.
   RTC_NOTREACHED();
   return kDrop;
 }
 
 void RtpFrameReferenceFinder::PaddingReceived(uint16_t seq_num) {
   rtc::CritScope lock(&crit_);
   auto clean_padding_to =
@@ skipping 284 matching lines @@
   RTC_DCHECK(rtp_codec_header);
   const RTPVideoHeaderVP9& codec_header = rtp_codec_header->VP9;
 
   bool old_frame = Vp9PidTl0Fix(*frame, &rtp_codec_header->VP9.picture_id,
                                 &rtp_codec_header->VP9.tl0_pic_idx);
   if (old_frame)
     return kDrop;
 
   if (codec_header.picture_id == kNoPictureId ||
       codec_header.temporal_idx == kNoTemporalIdx) {
-    return ManageFrameGeneric(std::move(frame), codec_header.picture_id);
+    return ManageFrameGeneric(std::move(frame), kNoPictureId);
   }
 
   frame->spatial_layer = codec_header.spatial_idx;
   frame->inter_layer_predicted = codec_header.inter_layer_predicted;
   frame->picture_id = codec_header.picture_id % kPicIdLength;
-
   if (last_unwrap_ == -1)
     last_unwrap_ = codec_header.picture_id;
 
   if (last_picture_id_ == -1)
     last_picture_id_ = frame->picture_id;
 
   if (codec_header.flexible_mode) {
     frame->num_references = codec_header.num_ref_pics;
     for (size_t i = 0; i < frame->num_references; ++i) {
       frame->references[i] =
@@ skipping 322 matching lines @@
     if (!gof_info_.empty() &&
         AheadOf<uint8_t>(gof_info_.begin()->first, fixed_tl0)) {
       return true;
     }
   }
   return false;
 }
 
 }  // namespace video_coding
 }  // namespace webrtc