media/cast/test/utility/video_utility.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 // Utility functions for video testing.
   6
   7 #include "media/base/video_frame.h"
   8
   9 namespace media {
  10 namespace cast {
  11
  12 // Compute and return PSNR between two frames.
  13 double I420PSNR(const scoped_refptr<media::VideoFrame>& frame1,
  14                 const scoped_refptr<media::VideoFrame>& frame2);
  15
  16 // Compute and return SSIM between two frames.
  17 double I420SSIM(const scoped_refptr<media::VideoFrame>& frame1,
  18                 const scoped_refptr<media::VideoFrame>& frame2);
  19
  20 // Populate a video |frame| with a plaid pattern, cycling from the given
  21 // |start_value|.
  22 // Width, height and stride should be set in advance.
  23 // Memory is allocated within the function.
  24 void PopulateVideoFrame(VideoFrame* frame, int start_value);
  25
  26 // Populate a video frame with noise.
  27 void PopulateVideoFrameWithNoise(VideoFrame* frame);
  28
  29 // Populate a video frame from a file.
  30 // Returns true if frame was populated, false if not (EOF).
  31 bool PopulateVideoFrameFromFile(VideoFrame* frame, FILE* video_file);
  32
  33 }  // namespace cast
  34 }  // namespace media