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/*
* Copyright (c) 2018 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 "rtc_tools/video_file_writer.h"
#include <stdint.h>
#include <cstdio>
#include <string>
#include "absl/strings/match.h"
#include "api/video/video_frame_buffer.h"
#include "rtc_base/logging.h"
namespace webrtc {
namespace test {
namespace {
void WriteVideoToFile(const rtc::scoped_refptr<Video>& video,
const std::string& file_name,
int fps,
bool isY4m) {
RTC_CHECK(video);
FILE* output_file = fopen(file_name.c_str(), "wb");
if (output_file == nullptr) {
RTC_LOG(LS_ERROR) << "Could not open file for writing: " << file_name;
return;
}
if (isY4m) {
fprintf(output_file, "YUV4MPEG2 W%d H%d F%d:1 C420\n", video->width(),
video->height(), fps);
}
for (size_t i = 0; i < video->number_of_frames(); ++i) {
if (isY4m) {
std::string frame = "FRAME\n";
fwrite(frame.c_str(), 1, 6, output_file);
}
rtc::scoped_refptr<I420BufferInterface> buffer = video->GetFrame(i);
RTC_CHECK(buffer) << "Frame: " << i
<< "\nWhile trying to create: " << file_name;
const uint8_t* data_y = buffer->DataY();
int stride = buffer->StrideY();
for (int i = 0; i < video->height(); ++i) {
fwrite(data_y + i * stride, /*size=*/1, stride, output_file);
}
const uint8_t* data_u = buffer->DataU();
stride = buffer->StrideU();
for (int i = 0; i < buffer->ChromaHeight(); ++i) {
fwrite(data_u + i * stride, /*size=*/1, stride, output_file);
}
const uint8_t* data_v = buffer->DataV();
stride = buffer->StrideV();
for (int i = 0; i < buffer->ChromaHeight(); ++i) {
fwrite(data_v + i * stride, /*size=*/1, stride, output_file);
}
}
if (ferror(output_file) != 0) {
RTC_LOG(LS_ERROR) << "Error writing to file " << file_name;
}
fclose(output_file);
}
} // Anonymous namespace
void WriteVideoToFile(const rtc::scoped_refptr<Video>& video,
const std::string& file_name,
int fps) {
WriteVideoToFile(video, file_name, fps,
/*isY4m=*/absl::EndsWith(file_name, ".y4m"));
}
void WriteY4mVideoToFile(const rtc::scoped_refptr<Video>& video,
const std::string& file_name,
int fps) {
WriteVideoToFile(video, file_name, fps, /*isY4m=*/true);
}
void WriteYuvVideoToFile(const rtc::scoped_refptr<Video>& video,
const std::string& file_name,
int fps) {
WriteVideoToFile(video, file_name, fps, /*isY4m=*/false);
}
} // namespace test
} // namespace webrtc
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