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sstvdec
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Added skip cmd arg

master
colaclanth 2019-07-16 07:57:05 +01:00
parent 8777b61534
commit e54ab7c1a2
2 changed files with 11 additions and 9 deletions
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14
sstv/command.py
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@ -49,12 +49,13 @@ examples:
epilog=self.examples_of_use)
parser.add_argument("-d", "--decode", type=argparse.FileType('rb'),
help="SSTV audio file to decode",
dest="audio_file")
help="decode SSTV audio file", dest="audio_file")
parser.add_argument("-o", "--output", type=str,
help="desination of output file",
default="result.png",
dest="output_file")
help="save output image to custom location",
default="result.png", dest="output_file")
parser.add_argument("-s", "--skip", type=float,
help="time in seconds to start decoding signal at",
default=0.0, dest="skip")
parser.add_argument("-V", "--version", action="version",
version=version)
parser.add_argument("-v", "--verbose", action="count", default=1,
@ -78,6 +79,7 @@ examples:
self._audio_file = args.audio_file
self._output_file = args.output_file
self._skip = args.skip
if args.list_modes:
self.list_supported_modes()
@ -99,7 +101,7 @@ examples:
"""Start decoder"""
with SSTVDecoder(self._audio_file) as sstv:
img = sstv.decode()
img = sstv.decode(self._skip)
if img is None: # No SSTV signal found
exit(2)

6
sstv/decode.py
View File

@ -68,14 +68,14 @@ class SSTVDecoder(object):
def __del__(self):
self.close()
def decode(self, skip=0):
def decode(self, skip=0.0):
"""Attempts to decode the audio data as an SSTV signal
Returns a PIL image on success, and None if no SSTV signal was found
"""
if skip > 0:
self._samples = self._samples[skip:]
if skip > 0.0:
self._samples = self._samples[round(skip * self._sample_rate):]
header_end = self._find_header()