08a9b618a6
VideoFrameWriter is designed to accept webrtc::VideoFrame as input and write it with Y4mFrameWriterImpl to the output file, transforming webrtc::VideoFrame to the uint8_t* frame_buffer. VideoFrameWriter will be used to write webrtc::VideoFrames during dumping input and output video in peer connection level test framework and will be injected in webrtc::test::FrameGenerator and rtc::VideoSinkInterface<VideoFrame>. Bug: webrtc:10138 Change-Id: Iadec7d3ad66f226836acbebe070cf88ceb242f62 Reviewed-on: https://webrtc-review.googlesource.com/c/117200 Commit-Queue: Artem Titov <titovartem@webrtc.org> Reviewed-by: Stefan Holmer <stefan@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26305}
86 lines
3.2 KiB
C++
86 lines
3.2 KiB
C++
/*
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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 <utility>
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#include "absl/memory/memory.h"
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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_types.h" // NOLINT(build/include)
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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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VideoFrameWriter::VideoFrameWriter(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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: output_file_name_(std::move(output_file_name)),
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width_(width),
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height_(height),
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fps_(fps),
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frame_writer_(absl::make_unique<Y4mFrameWriterImpl>(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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VideoFrameWriter::~VideoFrameWriter() = default;
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bool VideoFrameWriter::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 VideoFrameWriter::Close() {
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frame_writer_->Close();
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}
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rtc::Buffer VideoFrameWriter::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 test
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} // namespace webrtc
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