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added PD modes (#16)

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András Veres-Szentkirályi 2018-02-24 22:23:55 +01:00
parent 35de6c718e
commit b731112007
2 changed files with 52 additions and 4 deletions
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52
pysstv/color.py
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@ -1,6 +1,6 @@
#!/usr/bin/env python
from __future__ import division
from six.moves import range
from six.moves import range, zip
from pysstv.sstv import byte_to_freq, FREQ_BLACK, FREQ_WHITE, FREQ_VIS_START
from pysstv.grayscale import GrayscaleSSTV
from itertools import chain
@ -149,4 +149,52 @@ class PasokonP7(PasokonP3):
INTER_CH_GAP = 5 * TIMEUNIT
MODES = (MartinM1, MartinM2, ScottieS1, ScottieS2, Robot36, PasokonP3, PasokonP5, PasokonP7)
class PD90(ColorSSTV):
VIS_CODE = 0x63
WIDTH = 320
HEIGHT = 256
SYNC = 20
PORCH = 2.08
PIXEL = 0.532
def gen_image_tuples(self):
yuv = self.image.convert('YCbCr').load()
for line in range(0, self.HEIGHT, 2):
for item in self.horizontal_sync():
yield item
yield FREQ_BLACK, self.PORCH
pixels0 = [yuv[col, line] for col in range(self.WIDTH)]
pixels1 = [yuv[col, line + 1] for col in range(self.WIDTH)]
for p in pixels0:
yield byte_to_freq(p[0]), self.PIXEL
for p0, p1 in zip(pixels0, pixels1):
yield byte_to_freq((p0[2] + p1[2]) / 2), self.PIXEL
for p0, p1 in zip(pixels0, pixels1):
yield byte_to_freq((p0[1] + p1[1]) / 2), self.PIXEL
for p in pixels1:
yield byte_to_freq(p[0]), self.PIXEL
class PD120(PD90):
VIS_CODE = 0x5f
WIDTH = 640
HEIGHT = 496
PIXEL = 0.19
class PD160(PD90):
VIS_CODE = 0x62
WIDTH = 512
HEIGHT = 400
PIXEL = 0.382
class PD180(PD120):
VIS_CODE = 0x60
PIXEL = 0.286
class PD240(PD120):
VIS_CODE = 0x61
PIXEL = 0.382
MODES = (MartinM1, MartinM2, ScottieS1, ScottieS2, Robot36,
PasokonP3, PasokonP5, PasokonP7, PD90, PD120, PD160, PD180, PD240)