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4e722459ec
Bug: webrtc:10616 Change-Id: I157fbf63b3794a1f655901ace7355edb1240cc72 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/146203 Reviewed-by: Magnus Jedvert <magjed@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28610}
108 lines
3.9 KiB
C++
108 lines
3.9 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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#include <stdio.h>
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#include <stdlib.h>
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#include <algorithm>
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#include <string>
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#include "absl/flags/flag.h"
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#include "absl/flags/parse.h"
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#include "absl/flags/usage.h"
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#include "api/scoped_refptr.h"
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#include "api/video/video_frame_buffer.h"
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#include "rtc_tools/frame_analyzer/video_quality_analysis.h"
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#include "rtc_tools/video_file_reader.h"
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ABSL_FLAG(std::string,
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results_file,
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"results.txt",
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"The full name of the file where the results will be written");
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ABSL_FLAG(std::string,
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reference_file,
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"ref.yuv",
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"The reference YUV file to compare against");
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ABSL_FLAG(std::string,
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test_file,
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"test.yuv",
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"The test YUV file to run the analysis for");
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void CompareFiles(
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const rtc::scoped_refptr<webrtc::test::Video>& reference_video,
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const rtc::scoped_refptr<webrtc::test::Video>& test_video,
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const char* results_file_name) {
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FILE* results_file = fopen(results_file_name, "w");
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const size_t num_frames = std::min(reference_video->number_of_frames(),
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test_video->number_of_frames());
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for (size_t i = 0; i < num_frames; ++i) {
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const rtc::scoped_refptr<webrtc::I420BufferInterface> ref_buffer =
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reference_video->GetFrame(i);
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const rtc::scoped_refptr<webrtc::I420BufferInterface> test_buffer =
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test_video->GetFrame(i);
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// Calculate the PSNR and SSIM.
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double result_psnr = webrtc::test::Psnr(ref_buffer, test_buffer);
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double result_ssim = webrtc::test::Ssim(ref_buffer, test_buffer);
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fprintf(results_file, "Frame: %zu, PSNR: %f, SSIM: %f\n", i, result_psnr,
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result_ssim);
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}
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fclose(results_file);
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}
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/*
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* A tool running PSNR and SSIM analysis on two videos - a reference video and a
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* test video. The two videos should be I420 Y4M videos.
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* The tool just runs PSNR and SSIM on the corresponding frames in the test and
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* the reference videos until either the first or the second video runs out of
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* frames. The result is written in a results text file in the format:
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* Frame: <frame_number>, PSNR: <psnr_value>, SSIM: <ssim_value>
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* Frame: <frame_number>, ........
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*
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* The max value for PSNR is 48.0 (between equal frames), as for SSIM it is 1.0.
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*
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* Usage:
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* psnr_ssim_analyzer --reference_file=<name_of_file> --test_file=<name_of_file>
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* --results_file=<name_of_file>
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*/
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int main(int argc, char* argv[]) {
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absl::SetProgramUsageMessage(
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"Runs PSNR and SSIM on two I420 videos and write the"
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"results in a file.\n"
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"Example usage:\n"
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"./psnr_ssim_analyzer --reference_file=ref.yuv "
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"--test_file=test.yuv --results_file=results.txt\n");
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absl::ParseCommandLine(argc, argv);
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rtc::scoped_refptr<webrtc::test::Video> reference_video =
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webrtc::test::OpenY4mFile(absl::GetFlag(FLAGS_reference_file));
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rtc::scoped_refptr<webrtc::test::Video> test_video =
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webrtc::test::OpenY4mFile(absl::GetFlag(FLAGS_test_file));
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if (!reference_video || !test_video) {
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fprintf(stderr, "Error opening video files\n");
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return 0;
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}
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if (reference_video->width() != test_video->width() ||
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reference_video->height() != test_video->height()) {
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fprintf(stderr,
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"Reference and test video files do not have same size: %dx%d "
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"versus %dx%d\n",
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reference_video->width(), reference_video->height(),
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test_video->width(), test_video->height());
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return 0;
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}
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CompareFiles(reference_video, test_video,
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absl::GetFlag(FLAGS_results_file).c_str());
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return 0;
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}
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