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

webrtc/modules/include/module_common_types.h

 /*
  *  Copyright (c) 2012 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.
  */
 
 #ifndef WEBRTC_MODULES_INCLUDE_MODULE_COMMON_TYPES_H_
 #define WEBRTC_MODULES_INCLUDE_MODULE_COMMON_TYPES_H_
 
 #include <assert.h>
 #include <string.h>  // memcpy
 
 #include <algorithm>
 #include <limits>
 
 #include "webrtc/api/video/video_rotation.h"
+#include "webrtc/common_video/include/video_frame.h"
 #include "webrtc/common_types.h"
 #include "webrtc/modules/video_coding/codecs/h264/include/h264_globals.h"
 #include "webrtc/modules/video_coding/codecs/vp8/include/vp8_globals.h"
 #include "webrtc/modules/video_coding/codecs/vp9/include/vp9_globals.h"
 #include "webrtc/rtc_base/constructormagic.h"
 #include "webrtc/rtc_base/deprecation.h"
 #include "webrtc/rtc_base/optional.h"
 #include "webrtc/rtc_base/safe_conversions.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
 
+const size_t kMaxNumberOfStereoFrames = 8;
+
 struct RTPAudioHeader {
   uint8_t numEnergy;                  // number of valid entries in arrOfEnergy
   uint8_t arrOfEnergy[kRtpCsrcSize];  // one energy byte (0-9) per channel
   bool isCNG;                         // is this CNG
   size_t channel;                     // number of channels 2 = stereo
 };
 
+enum RtpVideoCodecTypes {
+  kRtpVideoNone,
+  kRtpVideoGeneric,
+  kRtpVideoStereo,
+  kRtpVideoVp8,
+  kRtpVideoVp9,
+  kRtpVideoH264
+};
+
+struct RTPVideoHeader;
+class RTPFragmentationHeader;  // forward declaration
+
+struct RTPVideoStereoInfo {
+  // RTPVideoStereoInfo() : num_frames(0) {}
+  // dtor to clean encoded_images
+  RtpVideoCodecTypes stereoCodecType;
+  uint8_t num_frames;
+  uint8_t frame_index;
+  const EncodedImage* encoded_images[kMaxNumberOfStereoFrames];
+  const RTPVideoHeader* rtp_video_headers[kMaxNumberOfStereoFrames];
+  const RTPFragmentationHeader* fragmentations[kMaxNumberOfStereoFrames];
+};
+
 union RTPVideoTypeHeader {
   RTPVideoHeaderVP8 VP8;
   RTPVideoHeaderVP9 VP9;
   RTPVideoHeaderH264 H264;
 };
-
-enum RtpVideoCodecTypes {
-  kRtpVideoNone,
-  kRtpVideoGeneric,
-  kRtpVideoVp8,
-  kRtpVideoVp9,
-  kRtpVideoH264
-};
 // Since RTPVideoHeader is used as a member of a union, it can't have a
 // non-trivial default constructor.
 struct RTPVideoHeader {
   uint16_t width;  // size
   uint16_t height;
   VideoRotation rotation;
 
   PlayoutDelay playout_delay;
 
   VideoContentType content_type;
 
   VideoSendTiming video_timing;
 
   bool is_first_packet_in_frame;
   uint8_t simulcastIdx;  // Index if the simulcast encoder creating
                          // this frame, 0 if not using simulcast.
   RtpVideoCodecTypes codec;
   RTPVideoTypeHeader codecHeader;
+  RTPVideoStereoInfo stereoInfo;
 };
+
 union RTPTypeHeader {
   RTPAudioHeader Audio;
   RTPVideoHeader Video;
 };
 
 struct WebRtcRTPHeader {
   RTPHeader header;
   FrameType frameType;
   RTPTypeHeader type;
   // NTP time of the capture time in local timebase in milliseconds.
@@ skipping 540 matching lines @@
   static constexpr int kNotAProbe = -1;
   int send_bitrate_bps = -1;
   int probe_cluster_id = kNotAProbe;
   int probe_cluster_min_probes = -1;
   int probe_cluster_min_bytes = -1;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_INCLUDE_MODULE_COMMON_TYPES_H_