(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(a)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)