Add support for writing raw encoder output to .ivf files.

webrtc/modules/video_coding/generic_encoder.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_VIDEO_CODING_GENERIC_ENCODER_H_
 #define WEBRTC_MODULES_VIDEO_CODING_GENERIC_ENCODER_H_
 
 #include <stdio.h>
 #include <vector>
 
 #include "webrtc/modules/video_coding/include/video_codec_interface.h"
 #include "webrtc/modules/video_coding/include/video_coding_defines.h"
+#include "webrtc/modules/video_coding/utility/ivf_file_writer.h"
 
 #include "webrtc/base/criticalsection.h"
 
 namespace webrtc {
 class CriticalSectionWrapper;
 
 namespace media_optimization {
 class MediaOptimization;
 }  // namespace media_optimization
 
@@ skipping 35 matching lines @@
 
     void SetInternalSource(bool internalSource) {
       _internalSource = internalSource;
     }
 
     void SetRotation(VideoRotation rotation) { _rotation = rotation; }
     void SignalLastEncoderImplementationUsed(
         const char* encoder_implementation_name);
 
  private:
-    VCMPacketizationCallback* send_callback_;
-    media_optimization::MediaOptimization* _mediaOpt;
-    uint8_t _payloadType;
-    bool _internalSource;
-    VideoRotation _rotation;
+  friend class VCMGenericEncoder;
 
-    EncodedImageCallback* post_encode_callback_;
+  int GetLayer(const CodecSpecificInfo& codec_specific);
 
-#ifdef DEBUG_ENCODER_BIT_STREAM
-    FILE* _bitStreamAfterEncoder;
-#endif
+  static const bool kEnableFrameRecording = false;

[pbos-webrtc, 2016/04/04 11:22:23]

I think this should be plumbed further out through:

webrtc/video/vie_encoder.cc:411:int32_t ViEEncoder::SendData(const uint8_t
payload_type,

And that the file writing should be done there.

[sprang_webrtc, 2016/04/05 10:35:38]

Done.

+  static const int kMaxLayers = 3;
+  VideoCodecType codec_type_ = kVideoCodecVP8;
+  std::unique_ptr<IvfFileWriter> file_writers_[kMaxLayers];
+
+  VCMPacketizationCallback* send_callback_;
+  media_optimization::MediaOptimization* _mediaOpt;
+  uint8_t _payloadType;
+  bool _internalSource;
+  VideoRotation _rotation;
+
+  EncodedImageCallback* post_encode_callback_;
 };  // end of VCMEncodeFrameCallback class
 
 /******************************/
 /* VCMGenericEncoder class    */
 /******************************/
 class VCMGenericEncoder {
   friend class VCMCodecDataBase;
 
  public:
   VCMGenericEncoder(VideoEncoder* encoder,
@@ skipping 44 matching lines @@
   const bool internal_source_;
   rtc::CriticalSection params_lock_;
   EncoderParameters encoder_params_ GUARDED_BY(params_lock_);
   VideoRotation rotation_;
   bool is_screenshare_;
 };  // end of VCMGenericEncoder class
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_VIDEO_CODING_GENERIC_ENCODER_H_