- jack-stdin [OPTIONS] port1 [ port2 ...]
jack-stdin reads raw audio data from standard-input and writes it to a
The number of given ports detemine the number of audio channels that are used. If more than one channel is given, the input audio-sample data needs to be interleaved.
- -b, --bitdepth BITS
- Specify the bit-depth of each sample. For integer-encoding this can be 16 or 24. The default is 16. This setting is only used for integer encoding: Floating-point samples will always be 32 bit wide.
- -d, --duration SEC
- Specify the time for which jack-stdin should run in seconds. A value less than 1 means to run indefinitely. The default is 0 which reads until end-of-file.
- -e, --encoding FORMAT
- Set the input format of the data: signed-integer, unsigned-integer, floating-point (default: signed)
- -f, --file FILENAME
- Read data from given file instead of standard-input.
- -h, --help
- Print a brief usage information
- -p, --prebuffer PERCENT
- Pre-fill the buffer before starting audio output to JACK (default 50.0%). NOTE: disable pre-buffering (-p 0) or use a small buffer size to play back very short samples.
- -L, --little-endian
- The input-data is in little-endian byte-order or native-byte-order float (this is the default)
- -B, --big-endian
- Interpret input audio data in big-endian byte-order or swap the byte-order of floating-point.
- -q, --quiet
- Inhibit usual output. This affects information and buffer-overflow warnings but not setup-errors.
- -S, --bufsize SAMPLES
- Choose the internal buffer-size in samples. The default size is 65536. The given value will be multiplied by the number of channels and bit-depth to get the size of the ring-buffer. Note: the buffersize must be larger than JACK's period size.
jack-stdout vlc_31994:out_1 vlc_31994:out_2 \ | sox -t raw -r 48k -e signed -b 16 -c 2 - \ -t raw -r 48k -e signed -b 16 -c 2 - \ tremolo 5 100 \ | ./jack-stdin system:playback_1 system:playback_2 cat /dev/dsp \ | jack-stdin system:playback_1 system:playback_2
jack-stdin is not suitable to play-back files shorter than twice the jack-period size.