Add VideoCodec::PreferDecodeLate

webrtc/modules/video_coding/main/source/generic_decoder.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.
  */
 
@@ skipping 78 matching lines @@
     *   Reset the decoder state, prepare for a new call
     */
     int32_t Reset();
 
     /**
     * Set decode callback. Deregistering while decoding is illegal.
     */
     int32_t RegisterDecodeCompleteCallback(VCMDecodedFrameCallback* callback);
 
     bool External() const;
+    bool HasOnlyOneOutputBuffer() const;
 
 private:
     VCMDecodedFrameCallback*    _callback;
     VCMFrameInformation         _frameInfos[kDecoderFrameMemoryLength];
     uint32_t                    _nextFrameInfoIdx;
     VideoDecoder&               _decoder;
     VideoCodecType              _codecType;
     bool                        _isExternal;
     bool                        _keyFrameDecoded;
 };
 
 }  // namespace webrtc
 
 #endif // WEBRTC_MODULES_VIDEO_CODING_GENERIC_DECODER_H_