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

api/video/video_frame_buffer.h

 /*
  *  Copyright (c) 2015 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 79 matching lines @@
   virtual int StrideY() const = 0;
   virtual int StrideU() const = 0;
   virtual int StrideV() const = 0;
 
  protected:
   ~PlanarYuvBuffer() override {}
 };
 
 class I420BufferInterface : public PlanarYuvBuffer {
  public:
-  Type type() const final;
+  Type type() const override;
 
   int ChromaWidth() const final;
   int ChromaHeight() const final;
 
+  bool HasAlpha() const;
+  virtual const uint8_t* DataA() const;
+  virtual int StrideA() const;
+
   rtc::scoped_refptr<I420BufferInterface> ToI420() final;
 
  protected:
   ~I420BufferInterface() override {}
 };
 
 class I444BufferInterface : public PlanarYuvBuffer {
  public:
   Type type() const final;
 
   int ChromaWidth() const final;
   int ChromaHeight() const final;
 
   rtc::scoped_refptr<I420BufferInterface> ToI420() final;
 
  protected:
   ~I444BufferInterface() override {}
 };
 
 }  // namespace webrtc
 
 #endif  // API_VIDEO_VIDEO_FRAME_BUFFER_H_