blob: 1524610684851d914fcc07b2b39e36d56778726d [file] [log] [blame]
* Copyright (c) 2012 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 <stdio.h>
#include <stdlib.h>
#include <map>
#include <string>
#include <vector>
#include "webrtc/tools/frame_analyzer/video_quality_analysis.h"
#include "webrtc/tools/simple_command_line_parser.h"
void CompareFiles(const char* reference_file_name, const char* test_file_name,
const char* results_file_name, int width, int height) {
FILE* ref_file = fopen(reference_file_name, "rb");
FILE* test_file = fopen(test_file_name, "rb");
FILE* results_file = fopen(results_file_name, "w");
int size = webrtc::test::GetI420FrameSize(width, height);
// Allocate buffers for test and reference frames.
uint8* test_frame = new uint8[size];
uint8* ref_frame = new uint8[size];
int frame_counter = 0;
while (webrtc::test::GetNextI420Frame(ref_file, width, height, ref_frame) &&
webrtc::test::GetNextI420Frame(test_file, width, height, test_frame)) {
// Calculate the PSNR and SSIM.
double result_psnr = webrtc::test::CalculateMetrics(
webrtc::test::kPSNR, ref_frame, test_frame, width, height);
double result_ssim = webrtc::test::CalculateMetrics(
webrtc::test::kSSIM, ref_frame, test_frame, width, height);
fprintf(results_file, "Frame: %d, PSNR: %f, SSIM: %f\n", frame_counter,
result_psnr, result_ssim);
delete[] test_frame;
delete[] ref_frame;
* A tool running PSNR and SSIM analysis on two videos - a reference video and a
* test video. The two videos should be I420 YUV videos.
* The tool just runs PSNR and SSIM on the corresponding frames in the test and
* the reference videos until either the first or the second video runs out of
* frames. The result is written in a results text file in the format:
* Frame: <frame_number>, PSNR: <psnr_value>, SSIM: <ssim_value>
* Frame: <frame_number>, ........
* The max value for PSNR is 48.0 (between equal frames), as for SSIM it is 1.0.
* Usage:
* psnr_ssim_analyzer --reference_file=<name_of_file> --test_file=<name_of_file>
* --results_file=<name_of_file> --width=<width_of_frames>
* --height=<height_of_frames>
int main(int argc, char** argv) {
std::string program_name = argv[0];
std::string usage = "Runs PSNR and SSIM on two I420 videos and write the"
"results in a file.\n"
"Example usage:\n" + program_name + " --reference_file=ref.yuv "
"--test_file=test.yuv --results_file=results.txt --width=320 "
"Command line flags:\n"
" - width(int): The width of the reference and test files. Default: -1\n"
" - height(int): The height of the reference and test files. "
" Default: -1\n"
" - reference_file(string): The reference YUV file to compare against."
" Default: ref.yuv\n"
" - test_file(string): The test YUV file to run the analysis for."
" Default: test_file.yuv\n"
" - results_file(string): The full name of the file where the results "
"will be written. Default: results.txt\n";
webrtc::test::CommandLineParser parser;
// Init the parser and set the usage message
parser.Init(argc, argv);
parser.SetFlag("width", "-1");
parser.SetFlag("height", "-1");
parser.SetFlag("results_file", "results.txt");
parser.SetFlag("reference_file", "ref.yuv");
parser.SetFlag("test_file", "test.yuv");
parser.SetFlag("results_file", "results.txt");
parser.SetFlag("help", "false");
if (parser.GetFlag("help") == "true") {
int width = strtol((parser.GetFlag("width")).c_str(), NULL, 10);
int height = strtol((parser.GetFlag("height")).c_str(), NULL, 10);
if (width <= 0 || height <= 0) {
fprintf(stderr, "Error: width or height cannot be <= 0!\n");
return -1;
parser.GetFlag("results_file").c_str(), width, height);