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Diffstat (limited to '')
-rw-r--r-- | third_party/libwebrtc/test/testsupport/video_frame_writer.cc | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/third_party/libwebrtc/test/testsupport/video_frame_writer.cc b/third_party/libwebrtc/test/testsupport/video_frame_writer.cc new file mode 100644 index 0000000000..c36ebdeed7 --- /dev/null +++ b/third_party/libwebrtc/test/testsupport/video_frame_writer.cc @@ -0,0 +1,111 @@ +/* + * 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 |