rate=1000000),
PARSE=WAVParser(),
ENC=Carousel(lambda meta: WAVWriter(**meta)),
WRITE=SimpleFileWriter("test.wav"),
linkages={
("READ", "outbox"): ("PARSE", "inbox"),
("PARSE", "outbox"): ("ENC", "inbox"),
("PARSE", "all_meta"): ("ENC", "next"),
("ENC", "outbox"): ("WRITE", "inbox"),
("READ", "signal"): ("PARSE", "control"),
("PARSE", "signal"): ("ENC", "control"),
("ENC", "signal"): ("WRITE", "control"),
},
).run()
print("Reading in test.wav and playing it back ...")
Graphline(SRC=RateControlledFileReader("test.wav",
readmode="bytes",
rate=44100 * 4),
WAV=WAVParser(),
DST=Carousel(lambda meta: Output(sample_rate=meta['sample_rate'],
format=meta['sample_format'],
channels=meta['channels'])),
linkages={
("SRC", "outbox"): ("WAV", "inbox"),
("SRC", "signal"): ("WAV", "control"),
("WAV", "outbox"): ("DST", "inbox"),
("WAV", "signal"): ("DST", "control"),
("WAV", "all_meta"): ("DST", "next"),
}).run()
" -f yuv4mpegpipe -y vidpipe.yuv -f wav -y audpipe.wav",
outpipes={
"vidpipe.yuv": "video",
"audpipe.wav": "audio"
},
buffersize=131072,
),
VIDEO=Pipeline(
1,
YUV4MPEGToFrame(),
FrameRateLimitedPlayback(VideoOverlay()),
),
AUDIO=Graphline(
PARSE=WAVParser(),
OUT=Carousel(lambda format: Output(format['sample_rate'],
format['channels'],
format['sample_format'],
maximumLag=0.5)),
linkages={
("", "inbox"): ("PARSE", "inbox"),
("PARSE", "outbox"): ("OUT", "inbox"),
("PARSE", "all_meta"): ("OUT", "next"),
("", "control"): ("PARSE", "control"),
("PARSE", "signal"): ("OUT", "control"),
("OUT", "signal"): ("", "signal"),
},
boxsizes={
("PARSE", "inbox"): 5,
},
),
DEBUG=ConsoleEchoer(),
linkages={
def makeAudioOutput(metadata):
return Output(metadata["sample_rate"], metadata["channels"],
metadata["format"])
def convertback(data):
output = []
for sample in data:
sample = int(sample)
output.append(chr(sample & 255) + chr((sample >> 8) & 255))
return "".join(output)
__kamaelia_components__ = (LPF, )
if __name__ == "__main__":
import sys
from Kamaelia.Chassis.Pipeline import Pipeline
from Kamaelia.Audio.PyMedia.Input import Input
from Kamaelia.Audio.PyMedia.Output import Output
from Kamaelia.Codec.Speex import SpeexEncode, SpeexDecode
from Kamaelia.Audio.RawAudioMixer import RawAudioMixer
sys.path.append("../../Tools/Whiteboard/Whiteboard")
from Entuple import Entuple
Pipeline(
Input(sample_rate=8000, channels=1, format="S16_LE"),
LPF(),
SpeexEncode(3),
SpeexDecode(3),
Entuple(prefix=["A"], postfix=[]), # added to provide some bufering
RawAudioMixer(), #
Output(sample_rate=8000, channels=1, format="S16_LE"),
).run()