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https://github.com/mollyim/webrtc.git
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1c62ffa530
In order to support WinUWP platform, all main(..) routines must be normalized to the formal int main(int argc, char* argv[]) form. A platform wrapper main is auto-created linking against the default main(...). This can only work if the linkage is exactly matching the proper formal definition and not a loosely defined main(...) alternative. Bug: webrtc:8608 Change-Id: I606663aaea7df1792c7c5636279617b8926fa5cc Reviewed-on: https://webrtc-review.googlesource.com/28721 Reviewed-by: Patrik Höglund <phoglund@webrtc.org> Reviewed-by: Stefan Holmer <stefan@webrtc.org> Cr-Commit-Position: refs/heads/master@{#21229}
134 lines
4.9 KiB
C++
134 lines
4.9 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 <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <map>
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#include <string>
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#include <vector>
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#include "rtc_tools/frame_analyzer/video_quality_analysis.h"
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#include "rtc_tools/simple_command_line_parser.h"
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#define MAX_NUM_FRAMES_PER_FILE INT_MAX
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void CompareFiles(const char* reference_file_name, const char* test_file_name,
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const char* results_file_name, int width, int height) {
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// Check if the reference_file_name ends with "y4m".
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bool y4m_mode = false;
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if (std::string(reference_file_name).find("y4m") != std::string::npos) {
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y4m_mode = true;
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}
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FILE* results_file = fopen(results_file_name, "w");
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int size = webrtc::test::GetI420FrameSize(width, height);
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// Allocate buffers for test and reference frames.
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uint8_t* test_frame = new uint8_t[size];
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uint8_t* ref_frame = new uint8_t[size];
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bool read_result = true;
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for (int frame_counter = 0; frame_counter < MAX_NUM_FRAMES_PER_FILE;
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++frame_counter) {
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read_result &= (y4m_mode) ? webrtc::test::ExtractFrameFromY4mFile(
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reference_file_name, width, height, frame_counter, ref_frame):
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webrtc::test::ExtractFrameFromYuvFile(reference_file_name, width,
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height, frame_counter, ref_frame);
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read_result &= webrtc::test::ExtractFrameFromYuvFile(test_file_name, width,
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height, frame_counter, test_frame);
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if (!read_result)
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break;
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// Calculate the PSNR and SSIM.
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double result_psnr = webrtc::test::CalculateMetrics(
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webrtc::test::kPSNR, ref_frame, test_frame, width, height);
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double result_ssim = webrtc::test::CalculateMetrics(
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webrtc::test::kSSIM, ref_frame, test_frame, width, height);
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fprintf(results_file, "Frame: %d, PSNR: %f, SSIM: %f\n", frame_counter,
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result_psnr, result_ssim);
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}
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delete[] test_frame;
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delete[] ref_frame;
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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 YUV 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> --width=<width_of_frames>
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* --height=<height_of_frames>
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*/
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int main(int argc, char* argv[]) {
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std::string program_name = argv[0];
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std::string usage = "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" + program_name + " --reference_file=ref.yuv "
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"--test_file=test.yuv --results_file=results.txt --width=320 "
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"--height=240\n"
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"Command line flags:\n"
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" - width(int): The width of the reference and test files. Default: -1\n"
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" - height(int): The height of the reference and test files. "
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" Default: -1\n"
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" - reference_file(string): The reference YUV file to compare against."
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" Default: ref.yuv\n"
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" - test_file(string): The test YUV file to run the analysis for."
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" Default: test_file.yuv\n"
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" - results_file(string): The full name of the file where the results "
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"will be written. Default: results.txt\n";
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webrtc::test::CommandLineParser parser;
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// Init the parser and set the usage message
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parser.Init(argc, argv);
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parser.SetUsageMessage(usage);
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parser.SetFlag("width", "-1");
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parser.SetFlag("height", "-1");
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parser.SetFlag("results_file", "results.txt");
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parser.SetFlag("reference_file", "ref.yuv");
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parser.SetFlag("test_file", "test.yuv");
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parser.SetFlag("results_file", "results.txt");
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parser.SetFlag("help", "false");
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parser.ProcessFlags();
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if (parser.GetFlag("help") == "true") {
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parser.PrintUsageMessage();
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exit(EXIT_SUCCESS);
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}
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parser.PrintEnteredFlags();
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int width = strtol((parser.GetFlag("width")).c_str(), NULL, 10);
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int height = strtol((parser.GetFlag("height")).c_str(), NULL, 10);
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if (width <= 0 || height <= 0) {
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fprintf(stderr, "Error: width or height cannot be <= 0!\n");
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return -1;
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}
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CompareFiles(parser.GetFlag("reference_file").c_str(),
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parser.GetFlag("test_file").c_str(),
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parser.GetFlag("results_file").c_str(), width, height);
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return 0;
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}
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