Add DecodedImageCallback::Decoded() function with custom decode time value.

webrtc/modules/video_coding/main/source/generic_decoder.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 29 matching lines @@
     _receiveCallback = receiveCallback;
 }
 
 VCMReceiveCallback* VCMDecodedFrameCallback::UserReceiveCallback()
 {
     CriticalSectionScoped cs(_critSect);
     return _receiveCallback;
 }
 
 int32_t VCMDecodedFrameCallback::Decoded(VideoFrame& decodedImage) {
+  return Decoded(decodedImage, -1);
+}
+
+int32_t VCMDecodedFrameCallback::Decoded(VideoFrame& decodedImage,
+                                         int64_t decode_time_ms) {
     // TODO(holmer): We should improve this so that we can handle multiple
     // callbacks from one call to Decode().
     VCMFrameInformation* frameInfo;
     VCMReceiveCallback* callback;
     {
         CriticalSectionScoped cs(_critSect);
         frameInfo = _timestampMap.Pop(decodedImage.timestamp());
         callback = _receiveCallback;
     }
 
     if (frameInfo == NULL) {
       LOG(LS_WARNING) << "Too many frames backed up in the decoder, dropping "
                          "this one.";
       return WEBRTC_VIDEO_CODEC_OK;
     }
 
+    const int64_t now_ms = _clock->TimeInMilliseconds();
+    if (decode_time_ms < 0) {
+      decode_time_ms =
+          static_cast<int32_t>(now_ms - frameInfo->decodeStartTimeMs);
+    }
     _timing.StopDecodeTimer(
         decodedImage.timestamp(),
-        frameInfo->decodeStartTimeMs,
-        _clock->TimeInMilliseconds(),
+        decode_time_ms,
+        now_ms,
         frameInfo->renderTimeMs);
 
     if (callback != NULL)
     {
         decodedImage.set_render_time_ms(frameInfo->renderTimeMs);
         decodedImage.set_rotation(frameInfo->rotation);
         callback->FrameToRender(decodedImage);
     }
     return WEBRTC_VIDEO_CODEC_OK;
 }
@@ skipping 109 matching lines @@
     _callback = callback;
     return _decoder.RegisterDecodeCompleteCallback(callback);
 }
 
 bool VCMGenericDecoder::External() const
 {
     return _isExternal;
 }
 
 }  // namespace