def main():
from xpra.platform import init, clean
try:
init("Loader", "Encoding Info")
verbose = "-v" in sys.argv or "--verbose" in sys.argv
if verbose:
log.enable_debug()
load_codecs()
print("codecs and csc modules found:")
#print("codec_status=%s" % codecs)
for name in ALL_CODECS:
mod = codecs.get(name, "")
f = mod
if mod and hasattr(mod, "__file__"):
f = mod.__file__
if f.startswith(os.getcwd()):
f = f[len(os.getcwd()):]
if f.startswith(os.path.sep):
f = f[1:]
print("* %s : %s" % (name.ljust(20), f))
if mod and verbose:
try:
if name=="PIL":
#special case for PIL which can be used for both encoding and decoding:
from xpra.codecs.codec_constants import get_PIL_encodings, get_PIL_decodings
e = get_PIL_encodings(mod)
print(" ENCODE: %s" % ", ".join(e))
d = get_PIL_decodings(mod)
print(" DECODE: %s" % ", ".join(d))
elif name.find("csc")>=0:
cs = list(mod.get_input_colorspaces())
for c in list(cs):
cs += list(mod.get_output_colorspaces(c))
print(" %s" % ", ".join(list(set(cs))))
elif name.find("enc")>=0 or name.find("dec")>=0:
encodings = mod.get_encodings()
print(" %s" % ", ".join(encodings))
try:
i = mod.get_info()
print(" %s" % i)
except:
pass
except Exception as e:
print("error getting extra information on %s: %s" % (name, e))
print("")
print("codecs versions:")
def pver(v):
if type(v)==tuple:
return ".".join([str(x) for x in v])
elif type(v) in (str, unicode) and v.startswith("v"):
return v[1:]
return str(v)
for name in sorted(codec_versions.keys()):
version = codec_versions[name]
print("* %s : %s" % (name.ljust(20), pver(version)))
finally:
#this will wait for input on win32:
clean()
def webp_encode(coding, image, rgb_formats, supports_transparency, quality,
speed, options):
pixel_format = image.get_pixel_format()
#log("rgb_encode%s pixel_format=%s, rgb_formats=%s", (coding, image, rgb_formats, supports_transparency, speed, rgb_zlib, rgb_lz4), pixel_format, rgb_formats)
if pixel_format not in rgb_formats:
if not rgb_reformat(image, rgb_formats, supports_transparency):
raise Exception(
"cannot find compatible rgb format to use for %s! (supported: %s)"
% (pixel_format, rgb_formats))
#get the new format:
pixel_format = image.get_pixel_format()
stride = image.get_rowstride()
enc_webp = get_codec("enc_webp")
#log("webp_encode%s stride=%s, enc_webp=%s", (coding, image, rgb_formats, supports_transparency, quality, speed, options), stride, enc_webp)
if enc_webp and stride > 0 and stride % 4 == 0 and image.get_pixel_format(
) in ("BGRA", "BGRX", "RGBA", "RGBX"):
#prefer Cython module:
alpha = supports_transparency and image.get_pixel_format().find(
"A") >= 0
w = image.get_width()
h = image.get_height()
if quality == 100:
#webp lossless is unbearibly slow for only marginal compression improvements,
#so force max speed:
speed = 100
else:
#normalize speed for webp: avoid low speeds!
speed = int(sqrt(speed) * 10)
speed = max(0, min(100, speed))
cdata = enc_webp.compress(image.get_pixels(),
w,
h,
stride=stride / 4,
quality=quality,
speed=speed,
has_alpha=alpha)
client_options = {"speed": speed, "rgb_format": pixel_format}
if quality >= 0 and quality <= 100:
client_options["quality"] = quality
if alpha:
client_options["has_alpha"] = True
return "webp", compression.Compressed(
"webp", cdata), client_options, image.get_width(
), image.get_height(), 0, 24
#fallback to PIL
log("using PIL fallback for webp: enc_webp=%s, stride=%s, pixel format=%s",
enc_webp, stride, image.get_pixel_format())
encs = get_PIL_encodings(PIL)
for x in ("webp", "png"):
if x in encs:
return PIL_encode(x, image, quality, speed, supports_transparency)
raise Exception(
"BUG: cannot use 'webp' encoding and none of the PIL fallbacks are available!"
)
def do_test_encode(rgb_data, w, h, N=10, Q=[50], S=[0, 1, 2, 3, 4, 5, 6], has_alpha=False):
#buf = "\0" * (w*h*4)
#buf = get_source_data(w*h*4)
image = ImageWrapper(0, 0, w, h, rgb_data, "BGRA", 32, w*4, planes=ImageWrapper.PACKED, thread_safe=True)
def webp(q, s):
return compress(rgb_data, w, h, quality=q, speed=s, has_alpha=has_alpha)
def webm(q, s):
data = webm_encode(image, q)
#data = ("webp", Compressed("webp", str(enc(handler, **kwargs).data)), client_options, image.get_width(), image.get_height(), 0, bpp)
return data[1]
def PIL_webp(q, s):
data = PIL_encode("webp", image, quality, speed, has_alpha)
return data[1]
TESTS = {"webp" : webp,
"webm" : webm}
if "webp" in get_PIL_encodings(PIL):
TESTS["PIL"] = PIL_webp
for name,encode in TESTS.items():
for q in Q:
S_options = S
if name=="webm":
S_options = [-1]
for s in S_options:
#print("test_encode() quality=%s, speed=%s" % (q, s))
start = time.time()
quality = q
speed = s
if s>0:
speed = s*16.7
for _ in range(N):
data = encode(quality, speed)
#def webp_encode(coding, image, quality):
if N>1:
sys.stdout.write(".")
sys.stdout.flush()
if N>1:
print("")
#def compress(pixels, width, height, quality=50, speed=50):
end = time.time()
mps = w*h*N/(end-start)/1024/1024
ratio = 100.0 * len(data) / len(rgb_data)
print("%s compressed at %4.1f MPixels/s %4.1f%% compression ratio : %4ix%-4i to: %9i bytes (quality=%3i, speed=%3i) %2i times in %5ims average" %
(name, mps, ratio, w, h, len(data), quality, speed, N, (end-start)*1000.0/N))
def webp_encode(coding, image, rgb_formats, supports_transparency, quality, speed, options):
pixel_format = image.get_pixel_format()
#log("rgb_encode%s pixel_format=%s, rgb_formats=%s", (coding, image, rgb_formats, supports_transparency, speed, rgb_zlib, rgb_lz4), pixel_format, rgb_formats)
if pixel_format not in rgb_formats:
if not rgb_reformat(image, rgb_formats, supports_transparency):
raise Exception("cannot find compatible rgb format to use for %s! (supported: %s)" % (pixel_format, rgb_formats))
#get the new format:
pixel_format = image.get_pixel_format()
stride = image.get_rowstride()
enc_webp = get_codec("enc_webp")
#log("webp_encode%s stride=%s, enc_webp=%s", (coding, image, rgb_formats, supports_transparency, quality, speed, options), stride, enc_webp)
if enc_webp and stride>0 and stride%4==0 and image.get_pixel_format() in ("BGRA", "BGRX", "RGBA", "RGBX"):
#prefer Cython module:
alpha = supports_transparency and image.get_pixel_format().find("A")>=0
w = image.get_width()
h = image.get_height()
if quality==100:
#webp lossless is unbearibly slow for only marginal compression improvements,
#so force max speed:
speed = 100
else:
#normalize speed for webp: avoid low speeds!
speed = int(sqrt(speed) * 10)
speed = max(0, min(100, speed))
cdata = enc_webp.compress(image.get_pixels(), w, h, stride=stride/4, quality=quality, speed=speed, has_alpha=alpha)
client_options = {"speed" : speed,
"rgb_format" : pixel_format}
if quality>=0 and quality<=100:
client_options["quality"] = quality
if alpha:
client_options["has_alpha"] = True
return "webp", compression.Compressed("webp", cdata), client_options, image.get_width(), image.get_height(), 0, 24
#fallback to PIL
log("using PIL fallback for webp: enc_webp=%s, stride=%s, pixel format=%s", enc_webp, stride, image.get_pixel_format())
encs = get_PIL_encodings(PIL)
for x in ("webp", "png"):
if x in encs:
return PIL_encode(x, image, quality, speed, supports_transparency)
raise Exception("BUG: cannot use 'webp' encoding and none of the PIL fallbacks are available!")
def main():
from xpra.platform import init, clean
try:
init("Loader", "Encoding Info")
verbose = "-v" in sys.argv or "--verbose" in sys.argv
if verbose:
log.enable_debug()
load_codecs()
print("codecs and csc modules found:")
#print("codec_status=%s" % codecs)
for name in ALL_CODECS:
mod = codecs.get(name, "")
f = mod
if mod and hasattr(mod, "__file__"):
f = mod.__file__
if f.startswith(os.getcwd()):
f = f[len(os.getcwd()):]
if f.startswith(os.path.sep):
f = f[1:]
print("* %s : %s" % (name.ljust(20), f))
if mod and verbose:
try:
if name == "PIL":
#special case for PIL which can be used for both encoding and decoding:
from xpra.codecs.codec_constants import get_PIL_encodings, get_PIL_decodings
e = get_PIL_encodings(mod)
print(" ENCODE: %s" %
", ".join(e))
d = get_PIL_decodings(mod)
print(" DECODE: %s" %
", ".join(d))
elif name.find("csc") >= 0:
cs = list(mod.get_input_colorspaces())
for c in list(cs):
cs += list(mod.get_output_colorspaces(c))
print(" %s" %
", ".join(list(set(cs))))
elif name.find("enc") >= 0 or name.find("dec") >= 0:
encodings = mod.get_encodings()
print(" %s" %
", ".join(encodings))
except:
e = sys.exc_info()[1]
print("error getting extra information on %s: %s" %
(name, e))
print("")
print("codecs versions:")
def pver(v):
if type(v) == tuple:
return ".".join([str(x) for x in v])
elif type(v) in (str, unicode) and v.startswith("v"):
return v[1:]
return str(v)
for name in sorted(codec_versions.keys()):
version = codec_versions[name]
print("* %s : %s" % (name.ljust(20), pver(version)))
finally:
#this will wait for input on win32:
clean()
