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/*
* Copyright (c) 2019 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/video_frame_writer.h"
#include <cmath>
#include <cstdlib>
#include <limits>
#include <memory>
#include <utility>
#include "api/scoped_refptr.h"
#include "api/video/i420_buffer.h"
#include "common_video/libyuv/include/webrtc_libyuv.h"
#include "rtc_base/logging.h"
namespace webrtc {
namespace test {
namespace {
rtc::Buffer ExtractI420BufferWithSize(const VideoFrame& frame,
int width,
int height) {
if (frame.width() != width || frame.height() != height) {
RTC_CHECK_LE(std::abs(static_cast<double>(width) / height -
static_cast<double>(frame.width()) / frame.height()),
2 * std::numeric_limits<double>::epsilon());
// Same aspect ratio, no cropping needed.
rtc::scoped_refptr<I420Buffer> scaled(I420Buffer::Create(width, height));
scaled->ScaleFrom(*frame.video_frame_buffer()->ToI420());
size_t length =
CalcBufferSize(VideoType::kI420, scaled->width(), scaled->height());
rtc::Buffer buffer(length);
RTC_CHECK_NE(ExtractBuffer(scaled, length, buffer.data()), -1);
return buffer;
}
// No resize.
size_t length =
CalcBufferSize(VideoType::kI420, frame.width(), frame.height());
rtc::Buffer buffer(length);
RTC_CHECK_NE(ExtractBuffer(frame, length, buffer.data()), -1);
return buffer;
}
} // namespace
Y4mVideoFrameWriterImpl::Y4mVideoFrameWriterImpl(std::string output_file_name,
int width,
int height,
int fps)
// We will move string here to prevent extra copy. We won't use const ref
// to not corrupt caller variable with move and don't assume that caller's
// variable won't be destructed before writer.
: width_(width),
height_(height),
frame_writer_(
std::make_unique<Y4mFrameWriterImpl>(std::move(output_file_name),
width_,
height_,
fps)) {
// Init underlying frame writer and ensure that it is operational.
RTC_CHECK(frame_writer_->Init());
}
bool Y4mVideoFrameWriterImpl::WriteFrame(const webrtc::VideoFrame& frame) {
rtc::Buffer frame_buffer = ExtractI420BufferWithSize(frame, width_, height_);
RTC_CHECK_EQ(frame_buffer.size(), frame_writer_->FrameLength());
return frame_writer_->WriteFrame(frame_buffer.data());
}
void Y4mVideoFrameWriterImpl::Close() {
frame_writer_->Close();
}
YuvVideoFrameWriterImpl::YuvVideoFrameWriterImpl(std::string output_file_name,
int width,
int height)
// We will move string here to prevent extra copy. We won't use const ref
// to not corrupt caller variable with move and don't assume that caller's
// variable won't be destructed before writer.
: width_(width),
height_(height),
frame_writer_(
std::make_unique<YuvFrameWriterImpl>(std::move(output_file_name),
width_,
height_)) {
// Init underlying frame writer and ensure that it is operational.
RTC_CHECK(frame_writer_->Init());
}
bool YuvVideoFrameWriterImpl::WriteFrame(const webrtc::VideoFrame& frame) {
rtc::Buffer frame_buffer = ExtractI420BufferWithSize(frame, width_, height_);
RTC_CHECK_EQ(frame_buffer.size(), frame_writer_->FrameLength());
return frame_writer_->WriteFrame(frame_buffer.data());
}
void YuvVideoFrameWriterImpl::Close() {
frame_writer_->Close();
}
} // namespace test
} // namespace webrtc