text: /*
   *  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 RTC_TOOLS_FRAME_EDITING_FRAME_EDITING_LIB_H_
  #define RTC_TOOLS_FRAME_EDITING_FRAME_EDITING_LIB_H_
  
  #include <string>
  
  namespace webrtc {
  
  // Frame numbering starts at 1. The set of frames to be processed includes the
  // frame with the number: first_frame_to_process and last_frame_to_process.
  // Interval specifies with what interval frames should be cut or kept.
  // Example 1:
  // If one clip has 10 frames (1 to 10), and you specify
  // first_frame_to_process = 4, last_frame_to_process = 7 and interval = -1,
  // then you will get a clip that contains frame 1, 2, 3, 8, 9 and 10.
  // Example 2:
  // I you specify first_frame_to_process = 1, last_frame_to_process = 10 and
  // interval = -4, then you will get a clip that contains frame 1, 5, 9.
  // Example 3:
  // If you specify first_frame_to_process = 4, last_frame_to_process = 7 and
  // interval = 2, then you will get a clip that contains frame
  // 1, 2, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 9 and 10.
  // No interpolation is done when up-sampling.
  
  int EditFrames(const std::string& in_path, int width, int height,
                  int first_frame_to_process, int interval,
                  int last_frame_to_process, const std::string& out_path);
  }  // namespace webrtc
  
  #endif  // RTC_TOOLS_FRAME_EDITING_FRAME_EDITING_LIB_H_
  