[LAD] [ANN] jack_capture V0.9.40

alex stone compose59 at gmail.com
Tue Jan 26 12:36:45 UTC 2010


On Tue, Jan 26, 2010 at 1:19 PM, Kjetil S. Matheussen
<k.s.matheussen at notam02.no> wrote:
>
> (I don't agree about the linux-audio-* mailing list
> announcement policy, so from now on, program announcements
> will only be posted to linux-audio-announce at lists.linuxaudio.org !)
>
>
>
> Download from
> =============
> http://archive.notam02.no/arkiv/src/?C=M;O=D
>
>
>
> jack_capture
> ============
> jack_capture is a program for recording soundfiles with jack.
>
> The default operation of the program is executed by writing "jack_capture"
> in the terminal without any extra command line options:
>
>    $ jack_capture
>
> ...which will record what you hear in your loudspeakers
> into a stereo wav file.
>
>
>
> Most important new features since 0.9.36
> ========================================
> * Direct support for mp3 using liblame.
> * Console cleanup. Terminal should not be messy
>   when quitting jack_capture.
> * Better buffering schemes.
> * Less used memory.
>
>
>
> Features
> ========
> * Autogenerated filenames are unique and humanly readable.
>
> * The 4GB size barrier for wav files is handled by continuing
>   writing to new files when reaching 4GB.
>
> * Supports all soundfile formats supported by sndfile.
>   (wav, aiff, ogg, flac, wavex, au, etc.)       (option: -f <format>)
>
> * Supports mp3 by using liblame.                (option: -mp3)
>
> * Option for writing raw 16 bit data to stdout. (option: -ws)
>
> * Built-in console meter, plus option for automatically starting
>   and stopping the Meterbridge jack meter program. Port
>   connections to Meterbridge are done automatically, and
>   on the fly, by jack_capture.
>
> * jack_capture can connect to any input or output jack port.
>
>   When "connecting" to a jack input port (i.e. a writable
>   port), jack_capture constantly monitors which jack ports
>   which are connected to the input port, and make sure
>   jack_capture is always connected to the same ports.
>
>   In other words, jack_capture will reconnect its ports
>   automatically during recording to match the connections
>   of the ports. This is for instance convenient when
>   recording the playback ports since jack_capture can be
>   started first, and then other programs can start and
>   stop at any moment while all sound still should be recorded.
>
> * No limit on the number of jack ports jack_capture can connect to.
>   (I.e. the --port argument can be specified more than once, plus
>   that it accepts wildcard arguments. For instance,
>
>        jack_capture --port "*"
>
>   will connect to all current jack ports, both input and output
>   ports, except jack_capture's own ports.)
>
> * Buffers are automatically increased during runtime to prevent
>   underruns and to avoid wasting memory by preallocating too much.
>   (handled by using lockless atomic fifo/lifo queues to store
>   temporary sound data instead of ringbuffers)
>
> * The disk thread is automatically reniced to a higher priority when
>   using more than half of the buffer.
>
> * Significantly better recording performance than Ardour.
>   (probably because jack_capture writes all channels into
>   only one file and that it is not creating peak files).
>   (tested on athlonXP)
>
> * No problem writing at least 256 channels of 32 bit wav at once to a
>   local hard drive. (tested on icore7)
>
> _______________________________________________
> Linux-audio-dev mailing list
> Linux-audio-dev at lists.linuxaudio.org
> http://lists.linuxaudio.org/listinfo/linux-audio-dev
>

Kjetil,
Installed and works on Gentoo 64bit. Recording works fine for a good
standard. Tested recording WAV, Flac, and Ogg.
Gui displayed correctly in fluxbox.
Thank you.

Alex.

-- 
www.openoctave.org

midi-subscribe at openoctave.org
development-subscribe at openoctave.org



More information about the Linux-audio-dev mailing list