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Unified Diff: webrtc/tools/frame_analyzer/reference_less_video_analysis_lib.cc

Issue 2965593002: Move webrtc/{tools => rtc_tools} (Closed)
Patch Set: Adding back root changes Created 3 years, 6 months ago
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Index: webrtc/tools/frame_analyzer/reference_less_video_analysis_lib.cc
diff --git a/webrtc/tools/frame_analyzer/reference_less_video_analysis_lib.cc b/webrtc/tools/frame_analyzer/reference_less_video_analysis_lib.cc
deleted file mode 100644
index ab484e9bb52b96eeac84d7d9723ccf99615649df..0000000000000000000000000000000000000000
--- a/webrtc/tools/frame_analyzer/reference_less_video_analysis_lib.cc
+++ /dev/null
@@ -1,202 +0,0 @@
-/*
- * Copyright (c) 2016 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 <string.h>
-#include <iostream>
-#include <numeric>
-#include <vector>
-
-#include "webrtc/tools/frame_analyzer/reference_less_video_analysis_lib.h"
-#include "webrtc/tools/frame_analyzer/video_quality_analysis.h"
-
-#define STATS_LINE_LENGTH 28
-#define PSNR_FREEZE_THRESHOLD 47
-#define SSIM_FREEZE_THRESHOLD .999
-
-#if defined(_WIN32) || defined(_WIN64)
-#define strtok_r strtok_s
-#endif
-
-void get_height_width_fps(int *height, int *width, int *fps,
- const std::string& video_file) {
- // File header looks like :
- // YUV4MPEG2 W1280 H720 F25:1 Ip A0:0 C420mpeg2 XYSCSS=420MPEG2.
- char frame_header[STATS_LINE_LENGTH];
- FILE* input_file = fopen(video_file.c_str(), "rb");
-
- size_t bytes_read = fread(frame_header, 1, STATS_LINE_LENGTH - 1, input_file);
-
- frame_header[bytes_read] = '\0';
- std::string file_header_stats[5];
- int no_of_stats = 0;
- char *save_ptr;
- char *token = strtok_r(frame_header, " ", &save_ptr);
-
- while (token != NULL) {
- file_header_stats[no_of_stats++] = token;
- token = strtok_r(NULL, " ", &save_ptr);
- }
-
- *width = std::stoi(file_header_stats[1].erase(0, 1));
- *height = std::stoi(file_header_stats[2].erase(0, 1));
- *fps = std::stoi(file_header_stats[3].erase(0, 1));
-
- printf("Height: %d Width: %d fps:%d \n", *height, *width, *fps);
- fclose(input_file);
-}
-
-bool frozen_frame(std::vector<double> psnr_per_frame,
- std::vector<double> ssim_per_frame, size_t frame) {
- if (psnr_per_frame[frame] >= PSNR_FREEZE_THRESHOLD ||
- ssim_per_frame[frame] >= SSIM_FREEZE_THRESHOLD)
- return true;
- return false;
-}
-
-std::vector<int> find_frame_clusters(const std::vector<double>& psnr_per_frame,
- const std::vector<double>& ssim_per_frame) {
- std::vector<int> identical_frame_clusters;
- int num_frozen = 0;
- size_t total_no_of_frames = psnr_per_frame.size();
-
- for (size_t each_frame = 0; each_frame < total_no_of_frames; each_frame++) {
- if (frozen_frame(psnr_per_frame, ssim_per_frame, each_frame)) {
- num_frozen++;
- } else if (num_frozen > 0) {
- // Not frozen anymore.
- identical_frame_clusters.push_back(num_frozen);
- num_frozen = 0;
- }
- }
- return identical_frame_clusters;
-}
-
-void print_freezing_metrics(const std::vector<double>& psnr_per_frame,
- const std::vector<double>& ssim_per_frame) {
- /*
- * Prints the different metrics mainly:
- * 1) Identical frame number, PSNR and SSIM values.
- * 2) Length of continuous frozen frames.
- * 3) Max length of continuous freezed frames.
- * 4) No of unique frames found.
- * 5) Total different identical frames found.
- *
- * Sample output:
- * Printing metrics for file: /src/webrtc/tools/test_3.y4m
- =============================
- Total number of frames received: 74
- Total identical frames: 5
- Number of unique frames: 69
- Printing Identical Frames:
- Frame Number: 29 PSNR: 48.000000 SSIM: 0.999618
- Frame Number: 30 PSNR: 48.000000 SSIM: 0.999898
- Frame Number: 60 PSNR: 48.000000 SSIM: 0.999564
- Frame Number: 64 PSNR: 48.000000 SSIM: 0.999651
- Frame Number: 69 PSNR: 48.000000 SSIM: 0.999684
- Print identical frame which appears in clusters :
- 2 1 1 1
- *
- */
- size_t total_no_of_frames = psnr_per_frame.size();
- std::vector<int> identical_frame_clusters = find_frame_clusters(
- psnr_per_frame, ssim_per_frame);
- int total_identical_frames = std::accumulate(
- identical_frame_clusters.begin(), identical_frame_clusters.end(), 0);
- size_t unique_frames = total_no_of_frames - total_identical_frames;
-
- printf("Total number of frames received: %zu\n", total_no_of_frames);
- printf("Total identical frames: %d\n", total_identical_frames);
- printf("Number of unique frames: %zu\n", unique_frames);
-
- printf("Printing Identical Frames: \n");
- for (size_t frame = 0; frame < total_no_of_frames; frame++) {
- if (frozen_frame(psnr_per_frame, ssim_per_frame, frame)) {
- printf(" Frame Number: %zu PSNR: %f SSIM: %f \n", frame,
- psnr_per_frame[frame], ssim_per_frame[frame]);
- }
- }
-
- printf("Print identical frame which appears in clusters : \n");
- for (int cluster = 0;
- cluster < static_cast<int>(identical_frame_clusters.size()); cluster++)
- printf("%d ", identical_frame_clusters[cluster]);
- printf("\n");
-}
-
-void compute_metrics(const std::string& video_file_name,
- std::vector<double>* psnr_per_frame,
- std::vector<double>* ssim_per_frame) {
- int height = 0, width = 0, fps = 0;
- get_height_width_fps(&height, &width, &fps, video_file_name);
-
- int no_of_frames = 0;
- int size = webrtc::test::GetI420FrameSize(width, height);
-
- // Allocate buffers for test and reference frames.
- uint8_t* current_frame = new uint8_t[size];
- uint8_t* next_frame = new uint8_t[size];
-
- while (true) {
- if (!(webrtc::test::ExtractFrameFromY4mFile (video_file_name.c_str(),
- width, height,
- no_of_frames,
- current_frame))) {
- break;
- }
-
- if (!(webrtc::test::ExtractFrameFromY4mFile (video_file_name.c_str(),
- width, height,
- no_of_frames + 1,
- next_frame))) {
- break;
- }
-
- double result_psnr = webrtc::test::CalculateMetrics(webrtc::test::kPSNR,
- current_frame,
- next_frame,
- width, height);
- double result_ssim = webrtc::test::CalculateMetrics(webrtc::test::kSSIM,
- current_frame,
- next_frame,
- width, height);
-
- psnr_per_frame->push_back(result_psnr);
- ssim_per_frame->push_back(result_ssim);
- no_of_frames++;
- }
- // Cleanup.
- delete[] current_frame;
- delete[] next_frame;
-}
-
-bool check_file_extension(const std::string& video_file_name) {
- if (video_file_name.substr(video_file_name.length()-3, 3) != "y4m") {
- printf("Only y4m video file format is supported. Given: %s\n",
- video_file_name.c_str());
- return false;
- }
- return true;
-}
-
-int run_analysis(const std::string& video_file) {
- std::vector<double> psnr_per_frame;
- std::vector<double> ssim_per_frame;
- if (check_file_extension(video_file)) {
- compute_metrics(video_file, &psnr_per_frame, &ssim_per_frame);
- } else {
- return -1;
- }
- printf("=============================\n");
- printf("Printing metrics for file: %s\n", video_file.c_str());
- printf("=============================\n");
- print_freezing_metrics(psnr_per_frame, ssim_per_frame);
- return 0;
-}

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