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replaced INTER_CH_GAP with before_channel hook

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András Veres-Szentkirályi 2013-05-23 15:34:12 +02:00
parent dc5061e50d
commit 702373e920
1 changed files with 10 additions and 6 deletions
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16
sstv.py
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@ -109,22 +109,23 @@ class GrayscaleSSTV(SSTV):
class ColorSSTV(GrayscaleSSTV):
RED, GREEN, BLUE = range(3)
INTER_CH_GAP = 0
def encode_line(self, line):
cs = self.COLOR_SEQ
msec_pixel = self.SCAN / self.WIDTH
image = self.image
icg = self.INTER_CH_GAP
for n, index in enumerate(cs):
if n and icg:
yield FREQ_BLACK, icg
for index in cs:
for item in self.before_channel(index):
yield item
for col in xrange(self.WIDTH):
pixel = image.getpixel((col, line))
value = pixel[index]
freq_pixel = FREQ_BLACK + FREQ_RANGE * value / 255
yield freq_pixel, msec_pixel
def before_channel(self, index):
return []
class Robot8BW(GrayscaleSSTV):
VIS_CODE = 0x02
@ -151,6 +152,10 @@ class MartinM1(ColorSSTV):
SCAN = 146.432
INTER_CH_GAP = 0.572
def before_channel(self, index):
if index != ColorSSTV.GREEN:
yield FREQ_BLACK, self.INTER_CH_GAP
class MartinM2(MartinM1):
VIS_CODE = 0x28
@ -162,7 +167,6 @@ class ScottieS1(MartinM1):
VIS_CODE = 0x3c
SYNC = 9
SCAN = 138.24
INTER_CH_GAP = 0
if __name__ == '__main__':