diff --git a/resources/reference_less_video_test_file.y4m.sha1 b/resources/reference_less_video_test_file.y4m.sha1 new file mode 100644 index 0000000000..f9e30487dc --- /dev/null +++ b/resources/reference_less_video_test_file.y4m.sha1 @@ -0,0 +1 @@ +5a1620516daf59870158a66230d7bafd9fe9afa1 \ No newline at end of file diff --git a/resources/video_quality_analysis_frame.txt.sha1 b/resources/video_quality_analysis_frame.txt.sha1 new file mode 100644 index 0000000000..e4a7c73280 --- /dev/null +++ b/resources/video_quality_analysis_frame.txt.sha1 @@ -0,0 +1 @@ +4d1ac894f1743af8059e8d8ae2465f6eaa1790b0 \ No newline at end of file diff --git a/webrtc/tools/BUILD.gn b/webrtc/tools/BUILD.gn index ace0b51c5a..565a0a2d66 100644 --- a/webrtc/tools/BUILD.gn +++ b/webrtc/tools/BUILD.gn @@ -234,7 +234,11 @@ if (rtc_include_tests) { ] } - tools_unittests_resources = [ "//resources/foreman_cif.yuv" ] + tools_unittests_resources = [ + "//resources/foreman_cif.yuv", + "//resources/reference_less_video_test_file.y4m", + "//resources/video_quality_analysis_frame.txt", + ] if (is_ios) { bundle_data("tools_unittests_bundle_data") { diff --git a/webrtc/tools/frame_analyzer/video_quality_analysis.cc b/webrtc/tools/frame_analyzer/video_quality_analysis.cc index b28a5d2def..c1911ca81c 100644 --- a/webrtc/tools/frame_analyzer/video_quality_analysis.cc +++ b/webrtc/tools/frame_analyzer/video_quality_analysis.cc @@ -13,7 +13,6 @@ #include #include #include - #include #define STATS_LINE_LENGTH 32 @@ -126,8 +125,8 @@ bool ExtractFrameFromY4mFile(const char* y4m_file_name, int frame_number, uint8_t* result_frame) { int frame_size = GetI420FrameSize(width, height); - int frame_offset = frame_number * frame_size; - bool errors = false; + int inital_offset = frame_number * (frame_size + Y4M_FRAME_HEADER_SIZE); + int frame_offset = 0; FILE* input_file = fopen(y4m_file_name, "rb"); if (input_file == NULL) { @@ -138,41 +137,44 @@ bool ExtractFrameFromY4mFile(const char* y4m_file_name, // YUV4MPEG2, a.k.a. Y4M File format has a file header and a frame header. The // file header has the aspect: "YUV4MPEG2 C420 W640 H360 Ip F30:1 A1:1". - // Skip the header if this is the first frame of the file. - if (frame_number == 0) { - char frame_header[Y4M_FILE_HEADER_MAX_SIZE]; - size_t bytes_read = - fread(frame_header, 1, Y4M_FILE_HEADER_MAX_SIZE, input_file); - if (bytes_read != static_cast(frame_size) && ferror(input_file)) { - fprintf(stdout, "Error while reading first frame from file %s\n", - y4m_file_name); - fclose(input_file); - return false; - } - std::string header_contents(frame_header); - std::size_t found = header_contents.find(Y4M_FRAME_DELIMITER); - if (found == std::string::npos) { - fprintf(stdout, "Corrupted Y4M header, could not find \"FRAME\" in %s\n", - header_contents.c_str()); - fclose(input_file); - return false; - } - frame_offset = static_cast(found); + char frame_header[Y4M_FILE_HEADER_MAX_SIZE]; + size_t bytes_read = + fread(frame_header, 1, Y4M_FILE_HEADER_MAX_SIZE - 1, input_file); + if (bytes_read != static_cast(frame_size) && ferror(input_file)) { + fprintf(stdout, "Error while reading frame from file %s\n", + y4m_file_name); + fclose(input_file); + return false; } + frame_header[bytes_read] = '\0'; + std::string header_contents(frame_header); + std::size_t found = header_contents.find(Y4M_FRAME_DELIMITER); + if (found == std::string::npos) { + fprintf(stdout, "Corrupted Y4M header, could not find \"FRAME\" in %s\n", + header_contents.c_str()); + fclose(input_file); + return false; + } + frame_offset = static_cast(found); // Change stream pointer to new offset, skipping the frame header as well. - fseek(input_file, frame_offset + Y4M_FRAME_HEADER_SIZE, SEEK_SET); + fseek(input_file, inital_offset + frame_offset + Y4M_FRAME_HEADER_SIZE, + SEEK_SET); - size_t bytes_read = fread(result_frame, 1, frame_size, input_file); - if (bytes_read != static_cast(frame_size) && - ferror(input_file)) { + bytes_read = fread(result_frame, 1, frame_size, input_file); + if (feof(input_file)) { + fclose(input_file); + return false; + } + if (bytes_read != static_cast(frame_size) && ferror(input_file)) { fprintf(stdout, "Error while reading frame no %d from file %s\n", frame_number, y4m_file_name); - errors = true; + fclose(input_file); + return false; } fclose(input_file); - return !errors; + return true; } double CalculateMetrics(VideoAnalysisMetricsType video_metrics_type, diff --git a/webrtc/tools/frame_analyzer/video_quality_analysis_unittest.cc b/webrtc/tools/frame_analyzer/video_quality_analysis_unittest.cc index f8a4b6979f..34c5fa77cb 100644 --- a/webrtc/tools/frame_analyzer/video_quality_analysis_unittest.cc +++ b/webrtc/tools/frame_analyzer/video_quality_analysis_unittest.cc @@ -11,6 +11,7 @@ // 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 #include #include @@ -38,6 +39,32 @@ class VideoQualityAnalysisTest : public ::testing::Test { }; 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);