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112 lines
4.1 KiB
112 lines
4.1 KiB
/*
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* Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "test/testsupport/video_frame_writer.h"
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#include <cmath>
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#include <cstdlib>
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#include <limits>
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#include <memory>
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#include <utility>
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#include "api/scoped_refptr.h"
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#include "api/video/i420_buffer.h"
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#include "common_video/libyuv/include/webrtc_libyuv.h"
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#include "rtc_base/logging.h"
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namespace webrtc {
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namespace test {
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namespace {
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rtc::Buffer ExtractI420BufferWithSize(const VideoFrame& frame,
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int width,
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int height) {
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if (frame.width() != width || frame.height() != height) {
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RTC_CHECK_LE(std::abs(static_cast<double>(width) / height -
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static_cast<double>(frame.width()) / frame.height()),
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2 * std::numeric_limits<double>::epsilon());
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// Same aspect ratio, no cropping needed.
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rtc::scoped_refptr<I420Buffer> scaled(I420Buffer::Create(width, height));
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scaled->ScaleFrom(*frame.video_frame_buffer()->ToI420());
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size_t length =
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CalcBufferSize(VideoType::kI420, scaled->width(), scaled->height());
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rtc::Buffer buffer(length);
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RTC_CHECK_NE(ExtractBuffer(scaled, length, buffer.data()), -1);
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return buffer;
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}
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// No resize.
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size_t length =
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CalcBufferSize(VideoType::kI420, frame.width(), frame.height());
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rtc::Buffer buffer(length);
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RTC_CHECK_NE(ExtractBuffer(frame, length, buffer.data()), -1);
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return buffer;
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}
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} // namespace
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Y4mVideoFrameWriterImpl::Y4mVideoFrameWriterImpl(std::string output_file_name,
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int width,
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int height,
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int fps)
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// We will move string here to prevent extra copy. We won't use const ref
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// to not corrupt caller variable with move and don't assume that caller's
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// variable won't be destructed before writer.
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: width_(width),
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height_(height),
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frame_writer_(
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std::make_unique<Y4mFrameWriterImpl>(std::move(output_file_name),
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width_,
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height_,
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fps)) {
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// Init underlying frame writer and ensure that it is operational.
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RTC_CHECK(frame_writer_->Init());
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}
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bool Y4mVideoFrameWriterImpl::WriteFrame(const webrtc::VideoFrame& frame) {
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rtc::Buffer frame_buffer = ExtractI420BufferWithSize(frame, width_, height_);
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RTC_CHECK_EQ(frame_buffer.size(), frame_writer_->FrameLength());
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return frame_writer_->WriteFrame(frame_buffer.data());
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}
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void Y4mVideoFrameWriterImpl::Close() {
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frame_writer_->Close();
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}
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YuvVideoFrameWriterImpl::YuvVideoFrameWriterImpl(std::string output_file_name,
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int width,
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int height)
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// We will move string here to prevent extra copy. We won't use const ref
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// to not corrupt caller variable with move and don't assume that caller's
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// variable won't be destructed before writer.
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: width_(width),
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height_(height),
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frame_writer_(
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std::make_unique<YuvFrameWriterImpl>(std::move(output_file_name),
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width_,
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height_)) {
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// Init underlying frame writer and ensure that it is operational.
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RTC_CHECK(frame_writer_->Init());
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}
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bool YuvVideoFrameWriterImpl::WriteFrame(const webrtc::VideoFrame& frame) {
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rtc::Buffer frame_buffer = ExtractI420BufferWithSize(frame, width_, height_);
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RTC_CHECK_EQ(frame_buffer.size(), frame_writer_->FrameLength());
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return frame_writer_->WriteFrame(frame_buffer.data());
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}
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void YuvVideoFrameWriterImpl::Close() {
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frame_writer_->Close();
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}
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} // namespace test
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} // namespace webrtc
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