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b72cc6d670
Calculate quality metrics for dropped frames by comparing original frame against last decoded one. This feature makes comparison of encoders which do/don't drop frames more fair. The feature is controlled by analyze_quality_of_dropped_frames flag and is disabled by default. Bug: none Change-Id: Ifab8df92d0b76e743ff3193c05d7c8dbd14921c4 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/190660 Commit-Queue: Sergey Silkin <ssilkin@webrtc.org> Reviewed-by: Sebastian Jansson <srte@webrtc.org> Reviewed-by: Rasmus Brandt <brandtr@webrtc.org> Cr-Commit-Position: refs/heads/master@{#32518}
104 lines
3.2 KiB
C++
104 lines
3.2 KiB
C++
/*
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* Copyright (c) 2012 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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#ifndef TEST_TESTSUPPORT_FRAME_WRITER_H_
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#define TEST_TESTSUPPORT_FRAME_WRITER_H_
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#include <stdio.h>
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#include <string>
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#include "api/video/video_frame.h"
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namespace webrtc {
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namespace test {
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// Handles writing of video files.
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class FrameWriter {
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public:
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virtual ~FrameWriter() {}
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// Initializes the file handler, i.e. opens the input and output files etc.
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// This must be called before reading or writing frames has started.
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// Returns false if an error has occurred, in addition to printing to stderr.
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virtual bool Init() = 0;
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// Writes a frame of the configured frame length to the output file.
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// Returns true if the write was successful, false otherwise.
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virtual bool WriteFrame(const uint8_t* frame_buffer) = 0;
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// Closes the output file if open. Essentially makes this class impossible
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// to use anymore. Will also be invoked by the destructor.
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virtual void Close() = 0;
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// Frame length in bytes of a single frame image.
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virtual size_t FrameLength() = 0;
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};
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// Writes raw I420 frames in sequence.
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class YuvFrameWriterImpl : public FrameWriter {
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public:
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// Creates a file handler. The input file is assumed to exist and be readable
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// and the output file must be writable.
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// Parameters:
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// output_filename The file to write. Will be overwritten if already
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// existing.
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// width, height Size of each frame to read.
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YuvFrameWriterImpl(std::string output_filename, int width, int height);
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~YuvFrameWriterImpl() override;
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bool Init() override;
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bool WriteFrame(const uint8_t* frame_buffer) override;
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void Close() override;
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size_t FrameLength() override;
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protected:
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const std::string output_filename_;
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size_t frame_length_in_bytes_;
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const int width_;
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const int height_;
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FILE* output_file_;
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};
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// Writes raw I420 frames in sequence, but with Y4M file and frame headers for
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// more convenient playback in external media players.
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class Y4mFrameWriterImpl : public YuvFrameWriterImpl {
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public:
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Y4mFrameWriterImpl(std::string output_filename,
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int width,
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int height,
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int frame_rate);
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~Y4mFrameWriterImpl() override;
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bool Init() override;
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bool WriteFrame(const uint8_t* frame_buffer) override;
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private:
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const int frame_rate_;
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};
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// LibJpeg is not available on iOS. This class will do nothing on iOS.
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class JpegFrameWriter {
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public:
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JpegFrameWriter(const std::string& output_filename);
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// Quality can be from 0 (worst) to 100 (best). Best quality is still lossy.
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// WriteFrame can be called only once. Subsequent calls will fail.
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bool WriteFrame(const VideoFrame& input_frame, int quality);
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#if !defined(WEBRTC_IOS)
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private:
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bool frame_written_;
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const std::string output_filename_;
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FILE* output_file_;
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#endif
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};
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} // namespace test
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} // namespace webrtc
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#endif // TEST_TESTSUPPORT_FRAME_WRITER_H_
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