test/testsupport/y4m_frame_writer.cc

/*
 *  Copyright (c) 2017 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.
 */

#include "webrtc/rtc_base/checks.h"
#include "webrtc/test/testsupport/frame_writer.h"

namespace webrtc {
namespace test {

Y4mFrameWriterImpl::Y4mFrameWriterImpl(std::string output_filename,
                                       int width,
                                       int height,
                                       int frame_rate)
    : YuvFrameWriterImpl(output_filename, width, height),
      frame_rate_(frame_rate) {}

Y4mFrameWriterImpl::~Y4mFrameWriterImpl() = default;

bool Y4mFrameWriterImpl::Init() {
  if (!YuvFrameWriterImpl::Init()) {
    return false;
  }
  int bytes_written = fprintf(output_file_, "YUV4MPEG2 W%d H%d F%d:1 C420\n",
                              width_, height_, frame_rate_);
  if (bytes_written < 0) {
    fprintf(stderr, "Failed to write Y4M file header to file %s\n",
            output_filename_.c_str());
    return false;
  }
  return true;
}

bool Y4mFrameWriterImpl::WriteFrame(uint8_t* frame_buffer) {
  if (output_file_ == nullptr) {
    fprintf(stderr,
            "Y4mFrameWriterImpl is not initialized (output file is NULL)\n");
    return false;
  }
  int bytes_written = fprintf(output_file_, "FRAME\n");
  if (bytes_written < 0) {
    fprintf(stderr, "Failed to write Y4M frame header to file %s\n",
            output_filename_.c_str());
    return false;
  }
  return YuvFrameWriterImpl::WriteFrame(frame_buffer);
}

}  // namespace test
}  // namespace webrtc