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

webrtc/modules/video_coding/frame_object.cc

Index: webrtc/modules/video_coding/frame_object.cc
diff --git a/webrtc/modules/video_coding/frame_object.cc b/webrtc/modules/video_coding/frame_object.cc
index 4c4537cb450fc28c68b005cef4a31da4420d7076..4e0d207b3d67b628fe8a48f8ede95a6c7b6a8bae 100644
--- a/webrtc/modules/video_coding/frame_object.cc
+++ b/webrtc/modules/video_coding/frame_object.cc
@@ -12,6 +12,7 @@
 #include "webrtc/common_video/h264/h264_common.h"
 #include "webrtc/modules/video_coding/packet_buffer.h"
 #include "webrtc/rtc_base/checks.h"
+#include "webrtc/rtc_base/logging.h"
 
 namespace webrtc {
 namespace video_coding {
@@ -34,6 +35,7 @@ RtpFrameObject::RtpFrameObject(PacketBuffer* packet_buffer,
       last_seq_num_(last_seq_num),
       received_time_(received_time),
       times_nacked_(times_nacked) {
+  LOG(LS_ERROR) << __func__ << first_seq_num << " " << last_seq_num;
   VCMPacket* first_packet = packet_buffer_->GetPacket(first_seq_num);
   RTC_CHECK(first_packet);
 
@@ -41,6 +43,26 @@ RtpFrameObject::RtpFrameObject(PacketBuffer* packet_buffer,
   frame_type_ = first_packet->frameType;
   codec_type_ = first_packet->codec;
 
+  if (first_packet->video_header.stereoInfo.frame_index == 0 &&
+      codec_type_ == kVideoCodecStereo) {
+    uint16_t index = first_seq_num;
+    while (index != last_seq_num) {
+      VCMPacket* packet = packet_buffer_->GetPacket(first_seq_num);
+      if (packet->video_header.stereoInfo.frame_index > 0)
+        break;
+      index = (index + 1) % packet_buffer_->size_;
+    }
+    last_seq_num_ = index;
+
+    _codecSpecificInfo.stereoInfo.num_frames = 1;
+    RtpFrameObject* alpha =
+        new RtpFrameObject(packet_buffer, index, last_seq_num, frame_size,
+                           times_nacked, received_time);
+    _codecSpecificInfo.stereoInfo.encoded_images[0] = alpha;
+    _codecSpecificInfo.stereoInfo.codec_specific_infos[0] =
+        alpha->CodecSpecific();
+  }
+
   // TODO(philipel): Remove when encoded image is replaced by FrameObject.
   // VCMEncodedFrame members
   CopyCodecSpecific(&first_packet->video_header);