Re: [linux-audio-dev] snd_pcm_poll_descriptors_revents() question

On Wed, Nov 08, 2006 at 05:58:40PM +0100, Clemens Ladisch wrote: OK, thanks. So a loop waiting for both capture and playback being ready could be something like (cut down to the bare minimum): n_play = driver->play_parm.npoll; n_capt = driver->capt_parm.npoll; while (n_play || n_capt) { if (n_play) snd_pcm_poll_descriptors (driver->play_parm.handle, pfd, n_play); if (n_capt) snd_pcm_poll_descriptors (driver->capt_parm.handle, pfd + n_play, n_capt); prv = poll (pfd, n_play + n_capt, 1000); if (prv < 0) { if (errno == EINTR) return ERR1; return ERR2; } if (prv == 0) return ERR3; if (n_play) { snd_pcm_poll_descriptors_revents (driver->play_parm.handle, pfd, n_play, &rev); if (rev & POLLERR) return ERR4; if (rev & POLLOUT) n_play = 0; } if (n_capt) { snd_pcm_poll_descriptors_revents (driver->capt_parm.handle, pfd + n_play, n_capt, &rev); if (rev & POLLERR) return ERR5; if (rev & POLLIN) n_capt = 0; } } return 0; -- FA Lascia la spina, cogli la rosa.