kopia lustrzana https://github.com/dnet/pySSTV
52 wiersze
1.4 KiB
Python
52 wiersze
1.4 KiB
Python
#!/usr/bin/env python
|
|
|
|
"""
|
|
Demonstrates playing the generated samples directly using PyAudio
|
|
Tested on PyAudio 0.2.7 http://people.csail.mit.edu/hubert/pyaudio/
|
|
"""
|
|
|
|
|
|
from pysstv.sstv import SSTV
|
|
from time import sleep
|
|
from itertools import islice
|
|
import struct, pyaudio
|
|
|
|
class PyAudioSSTV(object):
|
|
def __init__(self, sstv):
|
|
self.pa = pyaudio.PyAudio()
|
|
self.sstv = sstv
|
|
self.fmt = '<' + SSTV.BITS_TO_STRUCT[sstv.bits]
|
|
|
|
def __del__(self):
|
|
self.pa.terminate()
|
|
|
|
def execute(self):
|
|
self.sampler = self.sstv.gen_samples()
|
|
stream = self.pa.open(
|
|
format=self.pa.get_format_from_width(self.sstv.bits // 8),
|
|
channels=1, rate=self.sstv.samples_per_sec, output=True,
|
|
stream_callback=self.callback)
|
|
stream.start_stream()
|
|
while stream.is_active():
|
|
sleep(0.5)
|
|
stream.stop_stream()
|
|
stream.close()
|
|
|
|
def callback(self, in_data, frame_count, time_info, status):
|
|
frames = ''.join(struct.pack(self.fmt, b)
|
|
for b in islice(self.sampler, frame_count))
|
|
return frames, pyaudio.paContinue
|
|
|
|
|
|
def main():
|
|
from PIL import Image
|
|
from pysstv.grayscale import Robot8BW
|
|
|
|
img = Image.open("160x120bw.png")
|
|
sstv = Robot8BW(img, 44100, 16)
|
|
sstv.vox_enabled = True
|
|
PyAudioSSTV(sstv).execute()
|
|
|
|
if __name__ == '__main__':
|
|
main()
|