test_x264.py
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#!/usr/bin/env python
import operator
from optparse import OptionGroup
import sys
from time import time
from digress.cli import Dispatcher as _Dispatcher
from digress.errors import ComparisonError, FailedTestError, DisabledTestError
from digress.testing import depends, comparer, Fixture, Case
from digress.comparers import compare_pass
from digress.scm import git as x264git
from subprocess import Popen, PIPE, STDOUT
import os
import re
import shlex
import inspect
from random import randrange, seed
from math import ceil
from itertools import imap, izip
os.chdir(os.path.join(os.path.dirname(__file__), ".."))
# options
OPTIONS = [
[ "--tune %s" % t for t in ("film", "zerolatency") ],
("", "--intra-refresh"),
("", "--no-cabac"),
("", "--interlaced"),
("", "--slice-max-size 1000"),
("", "--frame-packing 5"),
[ "--preset %s" % p for p in ("ultrafast",
"superfast",
"veryfast",
"faster",
"fast",
"medium",
"slow",
"slower",
"veryslow",
"placebo") ]
]
# end options
def compare_yuv_output(width, height):
def _compare_yuv_output(file_a, file_b):
size_a = os.path.getsize(file_a)
size_b = os.path.getsize(file_b)
if size_a != size_b:
raise ComparisonError("%s is not the same size as %s" % (
file_a,
file_b
))
BUFFER_SIZE = 8196
offset = 0
with open(file_a) as f_a:
with open(file_b) as f_b:
for chunk_a, chunk_b in izip(
imap(
lambda i: f_a.read(BUFFER_SIZE),
xrange(size_a // BUFFER_SIZE + 1)
),
imap(
lambda i: f_b.read(BUFFER_SIZE),
xrange(size_b // BUFFER_SIZE + 1)
)
):
chunk_size = len(chunk_a)
if chunk_a != chunk_b:
for i in xrange(chunk_size):
if chunk_a[i] != chunk_b[i]:
# calculate the macroblock, plane and frame from the offset
offs = offset + i
y_plane_area = width * height
u_plane_area = y_plane_area + y_plane_area * 0.25
v_plane_area = u_plane_area + y_plane_area * 0.25
pixel = offs % v_plane_area
frame = offs // v_plane_area
if pixel < y_plane_area:
plane = "Y"
pixel_x = pixel % width
pixel_y = pixel // width
macroblock = (ceil(pixel_x / 16.0), ceil(pixel_y / 16.0))
elif pixel < u_plane_area:
plane = "U"
pixel -= y_plane_area
pixel_x = pixel % width
pixel_y = pixel // width
macroblock = (ceil(pixel_x / 8.0), ceil(pixel_y / 8.0))
else:
plane = "V"
pixel -= u_plane_area
pixel_x = pixel % width
pixel_y = pixel // width
macroblock = (ceil(pixel_x / 8.0), ceil(pixel_y / 8.0))
macroblock = tuple([ int(x) for x in macroblock ])
raise ComparisonError("%s differs from %s at frame %d, " \
"macroblock %s on the %s plane (offset %d)" % (
file_a,
file_b,
frame,
macroblock,
plane,
offs)
)
offset += chunk_size
return _compare_yuv_output
def program_exists(program):
def is_exe(fpath):
return os.path.exists(fpath) and os.access(fpath, os.X_OK)
fpath, fname = os.path.split(program)
if fpath:
if is_exe(program):
return program
else:
for path in os.environ["PATH"].split(os.pathsep):
exe_file = os.path.join(path, program)
if is_exe(exe_file):
return exe_file
return None
class x264(Fixture):
scm = x264git
class Compile(Case):
@comparer(compare_pass)
def test_configure(self):
Popen([
"make",
"distclean"
], stdout=PIPE, stderr=STDOUT).communicate()
configure_proc = Popen([
"./configure"
] + self.fixture.dispatcher.configure, stdout=PIPE, stderr=STDOUT)
output = configure_proc.communicate()[0]
if configure_proc.returncode != 0:
raise FailedTestError("configure failed: %s" % output.replace("\n", " "))
@depends("configure")
@comparer(compare_pass)
def test_make(self):
make_proc = Popen([
"make",
"-j5"
], stdout=PIPE, stderr=STDOUT)
output = make_proc.communicate()[0]
if make_proc.returncode != 0:
raise FailedTestError("make failed: %s" % output.replace("\n", " "))
_dimension_pattern = re.compile(r"\w+ [[]info[]]: (\d+)x(\d+)[pi] \d+:\d+ @ \d+/\d+ fps [(][vc]fr[)]")
def _YUVOutputComparisonFactory():
class YUVOutputComparison(Case):
_dimension_pattern = _dimension_pattern
depends = [ Compile ]
options = []
def __init__(self):
for name, meth in inspect.getmembers(self):
if name[:5] == "test_" and name[5:] not in self.fixture.dispatcher.yuv_tests:
delattr(self.__class__, name)
def _run_x264(self):
x264_proc = Popen([
"./x264",
"-o",
"%s.264" % self.fixture.dispatcher.video,
"--dump-yuv",
"x264-output.yuv"
] + self.options + [
self.fixture.dispatcher.video
], stdout=PIPE, stderr=STDOUT)
output = x264_proc.communicate()[0]
if x264_proc.returncode != 0:
raise FailedTestError("x264 did not complete properly: %s" % output.replace("\n", " "))
matches = _dimension_pattern.match(output)
return (int(matches.group(1)), int(matches.group(2)))
@comparer(compare_pass)
def test_jm(self):
if not program_exists("ldecod"): raise DisabledTestError("jm unavailable")
try:
runres = self._run_x264()
jm_proc = Popen([
"ldecod",
"-i",
"%s.264" % self.fixture.dispatcher.video,
"-o",
"jm-output.yuv"
], stdout=PIPE, stderr=STDOUT)
output = jm_proc.communicate()[0]
if jm_proc.returncode != 0:
raise FailedTestError("jm did not complete properly: %s" % output.replace("\n", " "))
try:
compare_yuv_output(*runres)("x264-output.yuv", "jm-output.yuv")
except ComparisonError, e:
raise FailedTestError(e)
finally:
try: os.remove("x264-output.yuv")
except: pass
try: os.remove("%s.264" % self.fixture.dispatcher.video)
except: pass
try: os.remove("jm-output.yuv")
except: pass
try: os.remove("log.dec")
except: pass
try: os.remove("dataDec.txt")
except: pass
@comparer(compare_pass)
def test_ffmpeg(self):
if not program_exists("ffmpeg"): raise DisabledTestError("ffmpeg unavailable")
try:
runres = self._run_x264()
ffmpeg_proc = Popen([
"ffmpeg",
"-vsync 0",
"-i",
"%s.264" % self.fixture.dispatcher.video,
"ffmpeg-output.yuv"
], stdout=PIPE, stderr=STDOUT)
output = ffmpeg_proc.communicate()[0]
if ffmpeg_proc.returncode != 0:
raise FailedTestError("ffmpeg did not complete properly: %s" % output.replace("\n", " "))
try:
compare_yuv_output(*runres)("x264-output.yuv", "ffmpeg-output.yuv")
except ComparisonError, e:
raise FailedTestError(e)
finally:
try: os.remove("x264-output.yuv")
except: pass
try: os.remove("%s.264" % self.fixture.dispatcher.video)
except: pass
try: os.remove("ffmpeg-output.yuv")
except: pass
return YUVOutputComparison
class Regression(Case):
depends = [ Compile ]
_psnr_pattern = re.compile(r"x264 [[]info[]]: PSNR Mean Y:\d+[.]\d+ U:\d+[.]\d+ V:\d+[.]\d+ Avg:\d+[.]\d+ Global:(\d+[.]\d+) kb/s:\d+[.]\d+")
_ssim_pattern = re.compile(r"x264 [[]info[]]: SSIM Mean Y:(\d+[.]\d+) [(]\d+[.]\d+db[)]")
def __init__(self):
if self.fixture.dispatcher.x264:
self.__class__.__name__ += " %s" % " ".join(self.fixture.dispatcher.x264)
def test_psnr(self):
try:
x264_proc = Popen([
"./x264",
"-o",
"%s.264" % self.fixture.dispatcher.video,
"--psnr"
] + self.fixture.dispatcher.x264 + [
self.fixture.dispatcher.video
], stdout=PIPE, stderr=STDOUT)
output = x264_proc.communicate()[0]
if x264_proc.returncode != 0:
raise FailedTestError("x264 did not complete properly: %s" % output.replace("\n", " "))
for line in output.split("\n"):
if line.startswith("x264 [info]: PSNR Mean"):
return float(self._psnr_pattern.match(line).group(1))
raise FailedTestError("no PSNR output caught from x264")
finally:
try: os.remove("%s.264" % self.fixture.dispatcher.video)
except: pass
def test_ssim(self):
try:
x264_proc = Popen([
"./x264",
"-o",
"%s.264" % self.fixture.dispatcher.video,
"--ssim"
] + self.fixture.dispatcher.x264 + [
self.fixture.dispatcher.video
], stdout=PIPE, stderr=STDOUT)
output = x264_proc.communicate()[0]
if x264_proc.returncode != 0:
raise FailedTestError("x264 did not complete properly: %s" % output.replace("\n", " "))
for line in output.split("\n"):
if line.startswith("x264 [info]: SSIM Mean"):
return float(self._ssim_pattern.match(line).group(1))
raise FailedTestError("no PSNR output caught from x264")
finally:
try: os.remove("%s.264" % self.fixture.dispatcher.video)
except: pass
def _generate_random_commandline():
commandline = []
for suboptions in OPTIONS:
commandline.append(suboptions[randrange(0, len(suboptions))])
return filter(None, reduce(operator.add, [ shlex.split(opt) for opt in commandline ]))
_generated = []
fixture = x264()
fixture.register_case(Compile)
fixture.register_case(Regression)
class Dispatcher(_Dispatcher):
video = "akiyo_qcif.y4m"
products = 50
configure = []
x264 = []
yuv_tests = [ "jm" ]
def _populate_parser(self):
super(Dispatcher, self)._populate_parser()
# don't do a whole lot with this
tcase = _YUVOutputComparisonFactory()
yuv_tests = [ name[5:] for name, meth in filter(lambda pair: pair[0][:5] == "test_", inspect.getmembers(tcase)) ]
group = OptionGroup(self.optparse, "x264 testing-specific options")
group.add_option(
"-v",
"--video",
metavar="FILENAME",
action="callback",
dest="video",
type=str,
callback=lambda option, opt, value, parser: setattr(self, "video", value),
help="yuv video to perform testing on (default: %s)" % self.video
)
group.add_option(
"-s",
"--seed",
metavar="SEED",
action="callback",
dest="seed",
type=int,
callback=lambda option, opt, value, parser: setattr(self, "seed", value),
help="seed for the random number generator (default: unix timestamp)"
)
group.add_option(
"-p",
"--product-tests",
metavar="NUM",
action="callback",
dest="video",
type=int,
callback=lambda option, opt, value, parser: setattr(self, "products", value),
help="number of cartesian products to generate for yuv comparison testing (default: %d)" % self.products
)
group.add_option(
"--configure-with",
metavar="FLAGS",
action="callback",
dest="configure",
type=str,
callback=lambda option, opt, value, parser: setattr(self, "configure", shlex.split(value)),
help="options to run ./configure with"
)
group.add_option(
"--yuv-tests",
action="callback",
dest="yuv_tests",
type=str,
callback=lambda option, opt, value, parser: setattr(self, "yuv_tests", [
val.strip() for val in value.split(",")
]),
help="select tests to run with yuv comparisons (default: %s, available: %s)" % (
", ".join(self.yuv_tests),
", ".join(yuv_tests)
)
)
group.add_option(
"--x264-with",
metavar="FLAGS",
action="callback",
dest="x264",
type=str,
callback=lambda option, opt, value, parser: setattr(self, "x264", shlex.split(value)),
help="additional options to run ./x264 with"
)
self.optparse.add_option_group(group)
def pre_dispatch(self):
if not hasattr(self, "seed"):
self.seed = int(time())
print "Using seed: %d" % self.seed
seed(self.seed)
for i in xrange(self.products):
YUVOutputComparison = _YUVOutputComparisonFactory()
commandline = _generate_random_commandline()
counter = 0
while commandline in _generated:
counter += 1
commandline = _generate_random_commandline()
if counter > 100:
print >>sys.stderr, "Maximum command-line regeneration exceeded. " \
"Try a different seed or specify fewer products to generate."
sys.exit(1)
commandline += self.x264
_generated.append(commandline)
YUVOutputComparison.options = commandline
YUVOutputComparison.__name__ = ("%s %s" % (YUVOutputComparison.__name__, " ".join(commandline)))
fixture.register_case(YUVOutputComparison)
Dispatcher(fixture).dispatch()