-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Sat, Nov 17, 2007 at 02:02:28PM +1100, Erik de Castro Lopo wrote: > Ken Restivo wrote: > > > I'm looking for a way to play a wav file from STDIN that'll work with JACK. > > In general, WAV files are not designed for reading from things like pipes. > The problem is that they can contain metadata *after* the audio data. > > There are however file formats that are specifically design to be allowed > to be read from pipes, like AU and CAF. Both of these formats have all > metadata before the audio data and do not allow trailing metadata. > > Both AU and CAF formats support a wide range of audio data formats > including 16, 24 and 32 bit integer PCM, 32 bit floats, 64 bit floats, > Alaw, ulaw etc. > > > mplayer -ao jack (or just mplayer without JACK) won't handle WAV files on stdin, for some reason. > > > > Cannot seek backward in linear streams! > > Seek failed > > Mplayer is probably being a little conservative. > > libsndfile does allow reading from pipes as long as the file is > not too broken. > > > I need to do this because I'm playing wavpack'ed files: I need to do > > "wvunpack -o - filename.wv | SOMETHING - ". I do *not* want to have to > > unpack them to disk just to play them. > > Does wvunpack support output as AU of CAF? > > If wvunpack only does WAV output, you have two solutions: > > - Write SOMETHING to use libsndfile which does read from a pipe. > > - Hack wavpack support into libsndfile :-). > Interestingly, wavpack can write *and read* wav files from a pipe. I'll try inserting sndfile-convert into the pipeline and see if there's a way to make mplayer happy that way. - -ken -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFHPpXoe8HF+6xeOIcRAi7xAJ0dvP8/cy01xLy5NlXh/f3TY4akNwCghMse mmQ59Rms6Uu/hG/Qrg5sznw= =1dk2 -----END PGP SIGNATURE----- _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
