twitter / vireoConditional Complexity

Intro

Conditional complexity (also called cyclomatic complexity) is a term used to measure the complexity of software. The term refers to the number of possible paths through a program function. A higher value ofter means higher maintenance and testing costs (infosecinstitute.com).
Conditional complexity is calculated by counting all conditions in the program that can affect the execution path (e.g. if statement, loops, switches, and/or operators, try and catch blocks...).
Conditional complexity is measured at the unit level (methods, functions...).
Units are classified in four categories based on the measured McCabe index: 1-5 (simple units), 6-10 (medium complex units), 11-25 (complex units), 26+ (very complex units).

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Conditional Complexity Overall

There are 1,269 units with 18,279 lines of code in units (52.9% of code).

6 very complex units (1,520 lines of code)
8 complex units (1,110 lines of code)
46 medium complex units (3,229 lines of code)
79 simple units (2,531 lines of code)
1,130 very simple units (9,889 lines of code)

Legend:

51+

26-50

11-25

6-10

1-5

Alternative Visuals

3D view of all units

Conditional Complexity per Extension

51+

26-50

11-25

6-10

1-5

Conditional Complexity per Logical Component

primary logical decomposition

51+

26-50

11-25

6-10

1-5

Most Complex Units

Top 50 most complex units

Unit	# lines	McCabe index	# params
def main() in vireo/tools/scala/transcode/src/main/scala/com/twitter/vireo_tools/transcode/Main.scala	350	103	1
int parse_arguments() in vireo/tools/transcode/main.cpp	215	70	3
bool ImageReaderBMP::readImage() in imagecore/formats/internal/bmp.cpp	264	66	1
int ResizeCommand::performResize() in imagetool/commands/resize.cpp	239	64	2
int main() in vireo/tools/frames/main.cpp	273	54	2
static int computeHistogram() in imagecore/image/colorpalette.cpp	179	51	4
int TiledResizeOperation::performResize() in imagecore/image/tiledresize.cpp	143	38	0
int main() in vireo/tools/transcode/main.cpp	96	37	2
int main() in vireo/tools/validate/main.cpp	198	36	2
int ColorsCommand::run() in imagetool/commands/colors.cpp	143	34	2
int main() in vireo/tools/remux/main.cpp	99	33	2
bool finish_initialization() in vireo/internal/demux/mp2ts.cpp	116	31	0
unsigned int ImageReaderJPEG::readRows() in imagecore/formats/internal/jpeg.cpp	171	30	3
int main() in vireo/tools/viddiff/main.cpp	144	28	2
int GenLUTCommand::run() in imagetool/commands/genlut.cpp	157	25	2
auto H264::operator() in vireo/internal/decode/h264.cpp	130	24	0
bool ImageWriterJPEG::writeMarkers() in imagecore/formats/internal/jpeg.cpp	58	23	0
int main() in vireo/tools/psnr/main.cpp	109	22	2
void parse_audio_codec_info() in vireo/internal/demux/mp4.cpp	96	22	1
bool ImageReaderJPEG::beginReadInternal() in imagecore/formats/internal/jpeg.cpp	68	22	3
functional::Video transcode() in vireo/tools/transcode/main.cpp	95	21	6
void parse_samples() in vireo/internal/demux/mp4.cpp	95	21	2
int CleanCommand::run() in imagetool/commands/clean.cpp	71	21	2
bool ImageReaderGIF::readImage() in imagecore/formats/internal/gif.cpp	41	21	1
int parse_arguments() in vireo/tools/remux/main.cpp	69	20	3
void process_h264_frame() in vireo/internal/demux/mp2ts.cpp	99	20	3
unsigned int ImageWriterJPEG::writeRows() in imagecore/formats/internal/jpeg.cpp	126	20	3
bool ImageWriterJPEG::copyLossless() in imagecore/formats/internal/jpeg.cpp	76	20	1
def main() in vireo/tools/scala/chunk/src/main/scala/com/twitter/vireo_tools/chunk/Main.scala	94	19	1
int main() in vireo/tools/stitch/main.cpp	94	19	2
bool finish_initialization() in vireo/internal/demux/webm.cpp	113	19	0
ReturnType getValue() in imagecore/formats/exif/exifreader.h	86	19	2
int main() in vireo/tools/unchunk/main.cpp	109	18	2
void parse_video_codec_info() in vireo/internal/demux/mp4.cpp	61	18	1
int Stitch() in vireo/android/android.cpp	42	18	3
bool ImageReaderGIF::copyFrameRegion() in imagecore/formats/internal/gif.cpp	59	18	3
int ForceRGBCommand::run() in imagetool/commands/forcergb.cpp	78	16	2
bool ImageReaderPNG::beginRead() in imagecore/formats/internal/png.cpp	35	16	3
def apply() in vireo/scala/vireo-scala/src/main/scala/com/twitter/vireo/common/Util.scala	68	15	0
auto mux() in vireo/android/util.cpp	64	15	5
bool ImageWriterWebP::writeImage() in imagecore/formats/internal/webp.cpp	80	15	1
bool ExifCommon::TagHeaderType::verifyTypeAndCount() in imagecore/formats/exif/exifcommon.cpp	45	15	2
int main() in vireo/tools/chunk/main.cpp	79	14	2
int IdentifyCommand::run() in imagetool/commands/identify.cpp	57	14	2
bool ImageWriterJPEG::beginWrite() in imagecore/formats/internal/jpeg.cpp	61	14	3
bool ImageWriterPNG::beginWrite() in imagecore/formats/internal/png.cpp	30	14	3
std::vector cache_and_flush() in vireo/mux/mp2ts.cpp	68	13	4
void parse_video_resolution() in vireo/internal/demux/mp4.cpp	56	13	1
auto YUV::full_range() in vireo/frame/yuv.cpp	84	13	1
static int computeKmeans() in imagecore/image/colorpalette.cpp	54	13	4