On Wed, 05 Jan 2022 16:56:47 +0100, Vinod Koul wrote:
Hi Daniel,
On 05-01-22, 16:31, Daniel Baluta wrote:
Hi all,
Is there any quick document for handling Ctrl + Z with aplay/cplay?
cplay does have have handler for it, patches would be welcome :)
I don't see this signal handled with alsa-lib or tinycompress although linux kernel offers PAUSE/RESUME ioctls.
Are you sure, I checked with aplay, it seems to me work for me on Fedora
$ aplay test.wav Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono ^Z [1]+ Stopped aplay test.wav
It did pause the file and I was able to resume it from the last position.
FWIW: $ aplay --version aplay: version 1.2.6 by Jaroslav Kysela perex@perex.cz
What should be the expected behavior?
Pause the stream should be apt behaviour, unless Takashi or Jaroslav have better ideas
There is no special handling in alsa-lib or aplay program itself about this signal; it's just "paused" by the terminal, so no data is fed. And, after the resume, it deals with the standard XRUN error handling.
That said, it's a sort of XRUN injection. (IIRC, someone explicitly requested to keep this "feature" in axfr, too.)
Takashi