chromium/third_party/webrtc/test/testsupport/y4m_frame_generator.cc

/*
 *  Copyright (c) 2023 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 "test/testsupport/y4m_frame_generator.h"

#include <stdio.h>
#include <string.h>

#include <string>

#include "absl/strings/string_view.h"
#include "api/scoped_refptr.h"
#include "api/video/i420_buffer.h"
#include "rtc_base/checks.h"
#include "test/testsupport/frame_reader.h"

namespace webrtc {
namespace test {

namespace {
// Reading 30 bytes from the Y4M header should be enough to get width
// and heigth.
// The header starts with: `YUV4MPEG2 W<WIDTH> H<HEIGTH>`.
constexpr int kHeaderBytesToRead = …;
}  // namespace

Y4mFrameGenerator::Y4mFrameGenerator(absl::string_view filename,
                                     RepeatMode repeat_mode)
    : … { … }

Y4mFrameGenerator::VideoFrameData Y4mFrameGenerator::NextFrame() { … }

void Y4mFrameGenerator::SkipNextFrame() { … }

void Y4mFrameGenerator::ChangeResolution(size_t width, size_t height) { … }

FrameGeneratorInterface::Resolution Y4mFrameGenerator::GetResolution() const { … }

YuvFrameReaderImpl::RepeatMode Y4mFrameGenerator::ToYuvFrameReaderRepeatMode(
    RepeatMode repeat_mode) const { … }

}  // namespace test
}  // namespace webrtc