Bug in ExtractFrame API (extracts frames incorrectly)

webrtc/tools/frame_analyzer/video_quality_analysis_unittest.cc

 /*
  *  Copyright (c) 2013 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.
  */
 
 // This test doesn't actually verify the output since it's just printed
 // to stdout by void functions, but it's still useful as it executes the code.
 
+#include <stdio.h>
 #include <fstream>
 #include <string>
 
 #include "webrtc/test/gtest.h"
 #include "webrtc/test/testsupport/fileutils.h"
 #include "webrtc/tools/frame_analyzer/video_quality_analysis.h"
 
 namespace webrtc {
 namespace test {
 
 // Setup a log file to write the output to instead of stdout because we don't
 // want those numbers to be picked up as perf numbers.
 class VideoQualityAnalysisTest : public ::testing::Test {
  protected:
   static void SetUpTestCase() {
     std::string log_filename = webrtc::test::OutputPath() +
         "VideoQualityAnalysisTest.log";
     logfile_ = fopen(log_filename.c_str(), "w");
     ASSERT_TRUE(logfile_ != NULL);
   }
   static void TearDownTestCase() {
     ASSERT_EQ(0, fclose(logfile_));
   }
   static FILE* logfile_;
 };
 FILE* VideoQualityAnalysisTest::logfile_ = NULL;
 
+TEST_F(VideoQualityAnalysisTest, MatchExtractedY4mFrame) {
+  std::string video_file =
+         webrtc::test::ResourcePath("reference_less_video_test_file", "y4m");
+
+  std::string extracted_frame_from_video_file =
+         webrtc::test::ResourcePath("video_quality_analysis_frame", "txt");
+
+  int frame_height = 720, frame_width = 1280;
+  int frame_number = 2;
+  int size = GetI420FrameSize(frame_width, frame_height);
+  uint8_t* result_frame = new uint8_t[size];
+  uint8_t* expected_frame = new uint8_t[size];
+
+  FILE* input_file = fopen(extracted_frame_from_video_file.c_str(), "rb");
+  fread(expected_frame, 1, size, input_file);
+
+  ExtractFrameFromY4mFile(video_file.c_str(),
+                          frame_width, frame_height,
+                          frame_number, result_frame);
+
+  EXPECT_EQ(*expected_frame, *result_frame);
+  fclose(input_file);
+  delete[] result_frame;
+  delete[] expected_frame;
+}
+
 TEST_F(VideoQualityAnalysisTest, PrintAnalysisResultsEmpty) {
   ResultsContainer result;
   PrintAnalysisResults(logfile_, "Empty", &result);
 }
 
 TEST_F(VideoQualityAnalysisTest, PrintAnalysisResultsOneFrame) {
   ResultsContainer result;
   result.frames.push_back(AnalysisResult(0, 35.0, 0.9));
   PrintAnalysisResults(logfile_, "OneFrame", &result);
 }
@@ skipping 31 matching lines @@
   stats_file << "frame_0003 0101\n";
   stats_file << "frame_0004 0106\n";
   stats_file.close();
 
   PrintMaxRepeatedAndSkippedFrames(logfile_, "NormalStatsFile", stats_filename);
 }
 
 
 }  // namespace test
 }  // namespace webrtc