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codegen: added timing stats

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András Veres-Szentkirályi 2016-02-23 16:36:32 +01:00
parent ff2fc58aa7
commit 43d1c53514
1 changed files with 11 additions and 0 deletions
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11
pysstv/examples/codegen.py
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@ -111,19 +111,30 @@ def test():
from subprocess import Popen, PIPE, check_output
from os import remove, path
from PIL import Image
from datetime import datetime
import struct
exe = './codegen-test-executable'
try:
for sstv_class in supported:
print 'Testing', sstv_class
gcc = Popen(['gcc', '-xc', '-o', exe, '-'], stdin=PIPE)
start = datetime.now()
with open(path.join(path.dirname(__file__), 'codeman.c')) as cm:
gcc.communicate(cm.read().replace('#include "codegen.c"', '\n'.join(main(sstv_class))))
gen_elapsed = datetime.now() - start
print ' - gengcc took', gen_elapsed
start = datetime.now()
gen = check_output([exe])
native_elapsed = datetime.now() - start
print ' - native took', native_elapsed
img = Image.open("320x256rgb.png")
sstv = sstv_class(img, 44100, 16)
start = datetime.now()
for n, (freq, msec) in enumerate(sstv.gen_freq_bits()):
assert gen[n * 8:(n + 1) * 8] == struct.pack('ff', freq, msec)
python_elapsed = datetime.now() - start
print ' - python took', python_elapsed
print ' - speedup:', python_elapsed.total_seconds() / native_elapsed.total_seconds()
print 'OK'
finally:
remove(exe)