On Tue, Jan 10, 2012 at 09:32:08PM +0100, Robin Gareus wrote: > On 01/10/2012 08:42 PM, Tim Orford wrote: > > On Tue, Jan 10, 2012 at 03:38:39PM +0100, Robin Gareus wrote: > >> [...] > >> It's also pretty straight-forward in C; but before whipping up > >> `sndfile-waveform`, I'd thought I ask around. > > > > Hi Robin > > > > I'm trying to wrap up a first release of 'libwaveform' > > which mostly outputs to opengl using textures or shader > > programs, but I could add a PNG output tomorrow if you > > are interested. What command line args do you need? > > Hi Tim, > dreaming up --help: > > Usage: snd2png <audio-file-name> > Options: > -o <filename> write PNG to file instead of STDOUT > -w width in pixels (default 800) > -h height in pixels (default 192) > > maybe: > -A annotate axes with sample-number (X), value (Y). > add info-box: sample-rate, bit-format. > -c foreground color (RGBA) 0x000000ff (black) > -C background color (RGBA) 0xffffff80 (semi transp white) > > maybe later: > -l log-scale > -r rectified waveform shape > -F <font> specify font for annotations > -t <fps> use timecode instead of sample-numbers for x-axis > -T timecode start-offset - override BWF header info > -M add meta-data to annotations. > -f FFT analyze, colour highlight peak freq. > > In general: keep it professional (scientific) and simple. > > I've been thinking of throwing some time at forking sndfile-spectrogram > which already has all required infrastructure (and more). I don't think > a dedicated libwaveform is needed. It's pretty straight forward, isn't > it? I was actually surprised that there's actually no sndfile-waveform > tool, yet! -- Yeah right. It's a gimmick :) This will be awesome! IIUC, it sounds like just the sort of thing I could glue into Nama for visualizing waveforms. (snip) > greetings, > robin -- Joel Roth _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
