Initial import.

1 files changed, 119 insertions, 0 deletions

diff --git a/chromium/third_party/webrtc/tools/psnr_ssim_analyzer/psnr_ssim_analyzer.cc b/chromium/third_party/webrtc/tools/psnr_ssim_analyzer/psnr_ssim_analyzer.cc
new file mode 100644
index 00000000000..15246106848
--- /dev/null
+++ b/chromium/third_party/webrtc/tools/psnr_ssim_analyzer/psnr_ssim_analyzer.cc
@@ -0,0 +1,119 @@
+/*
+ *  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);
+    ++frame_counter;
+  }
+  delete[] test_frame;
+  delete[] ref_frame;
+
+  fclose(ref_file);
+  fclose(test_file);
+  fclose(results_file);
+}
+
+/*
+ * 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 "
+      "--height=240\n"
+      "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.SetUsageMessage(usage);
+
+  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");
+
+  parser.ProcessFlags();
+  if (parser.GetFlag("help") == "true") {
+    parser.PrintUsageMessage();
+  }
+  parser.PrintEnteredFlags();
+
+  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;
+  }
+
+  CompareFiles(parser.GetFlag("reference_file").c_str(),
+               parser.GetFlag("test_file").c_str(),
+               parser.GetFlag("results_file").c_str(), width, height);
+}