media/base/mac/video_frame_mac.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef MEDIA_BASE_MAC_VIDEO_FRAME_MAC_H_
   6 #define MEDIA_BASE_MAC_VIDEO_FRAME_MAC_H_
   7
   8 #include <CoreVideo/CVPixelBuffer.h>
   9
  10 #include "base/mac/scoped_cftyperef.h"
  11 #include "media/base/media_export.h"
  12
  13 namespace media {
  14
  15 class VideoFrame;
  16
  17 // Wrap a VideoFrame's data in a CVPixelBuffer object. The frame's lifetime is
  18 // extended for the duration of the pixel buffer's lifetime. If the frame's data
  19 // is already managed by a CVPixelBuffer (the frame was created using
  20 // |WrapCVPixelBuffer()|, then the underlying CVPixelBuffer is returned.
  21 //
  22 // The only supported formats are I420 and NV12. Frames with extended pixels
  23 // (the visible rect's size does not match the coded size) are not supported.
  24 // If an unsupported frame is specified, null is returned.
  25 MEDIA_EXPORT base::ScopedCFTypeRef<CVPixelBufferRef>
  26 WrapVideoFrameInCVPixelBuffer(const VideoFrame& frame);
  27
  28 }  // namespace media
  29
  30 #endif  // MEDIA_BASE_MAC_VIDEO_FRAME_MAC_H_