H.264 video codec support using OpenH264/FFmpeg

webrtc/modules/video_coding/codecs/test/videoprocessor.cc

 /*
  *  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.
  */
 
@@ skipping 207 matching lines @@
       fprintf(stderr, "Failed to encode frame %d, return code: %d\n",
               frame_number, encode_result);
     }
     stat.encode_return_code = encode_result;
     return true;
   } else {
     return false;  // we've reached the last frame
   }
 }
 
-void VideoProcessorImpl::FrameEncoded(webrtc::VideoCodecType codec,
-                                      const EncodedImage& encoded_image) {
+void VideoProcessorImpl::FrameEncoded(
+    webrtc::VideoCodecType codec,
+    const EncodedImage& encoded_image,
+    const webrtc::RTPFragmentationHeader* fragmentation) {
   // Timestamp is frame number, so this gives us #dropped frames.
   int num_dropped_from_prev_encode =
       encoded_image._timeStamp - prev_time_stamp_ - 1;
   num_dropped_frames_ += num_dropped_from_prev_encode;
   prev_time_stamp_ = encoded_image._timeStamp;
   if (num_dropped_from_prev_encode > 0) {
     // For dropped frames, we write out the last decoded frame to avoid getting
     // out of sync for the computation of PSNR and SSIM.
     for (int i = 0; i < num_dropped_from_prev_encode; i++) {
       frame_writer_->WriteFrame(last_successful_frame_buffer_);
@@ skipping 30 matching lines @@
           exclude_this_frame = true;
         }
         break;
       case kExcludeAllKeyFrames:
         exclude_this_frame = true;
         break;
       default:
         assert(false);
     }
   }
+
+  // Make a raw copy of the |encoded_image| buffer.
   size_t copied_buffer_size = encoded_image._length +
                               EncodedImage::GetBufferPaddingBytes(codec);
   rtc::scoped_ptr<uint8_t[]> copied_buffer(new uint8_t[copied_buffer_size]);
   memcpy(copied_buffer.get(), encoded_image._buffer, encoded_image._length);
+  // The image to feed to the decoder.
   EncodedImage copied_image;
   memcpy(&copied_image, &encoded_image, sizeof(copied_image));
   copied_image._size = copied_buffer_size;
   copied_image._buffer = copied_buffer.get();
+
   if (!exclude_this_frame) {
     stat.packets_dropped =
         packet_manipulator_->ManipulatePackets(&copied_image);
   }
 
   // Keep track of if frames are lost due to packet loss so we can tell
   // this to the encoder (this is handled by the RTP logic in the full stack)
   decode_start_ = TickTime::Now();
   // TODO(kjellander): Pass fragmentation header to the decoder when
   // CL 172001 has been submitted and PacketManipulator supports this.
@@ skipping 110 matching lines @@
       assert(false);
       return "Unknown";
   }
 }
 
 // Callbacks
 int32_t VideoProcessorImpl::VideoProcessorEncodeCompleteCallback::Encoded(
     const EncodedImage& encoded_image,
     const webrtc::CodecSpecificInfo* codec_specific_info,
     const webrtc::RTPFragmentationHeader* fragmentation) {
+  // Forward to parent class.
   RTC_CHECK(codec_specific_info);
   video_processor_->FrameEncoded(codec_specific_info->codecType,
-                                 encoded_image);  // Forward to parent class.
+                                 encoded_image,
+                                 fragmentation);
   return 0;
 }
 int32_t VideoProcessorImpl::VideoProcessorDecodeCompleteCallback::Decoded(
     VideoFrame& image) {
-  video_processor_->FrameDecoded(image);  // Forward to parent class.
+  // Forward to parent class.
+  video_processor_->FrameDecoded(image);
   return 0;
 }
 
 }  // namespace test
 }  // namespace webrtc