diff options
Diffstat (limited to 'hw/aud.c')
-rw-r--r-- | hw/aud.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/hw/aud.c b/hw/aud.c new file mode 100644 index 0000000..a1379c6 --- /dev/null +++ b/hw/aud.c @@ -0,0 +1,75 @@ +#include "aud.h" + +//harc-copy from aplay.c static void device_list(void) +int audio_get_devices() +{ + snd_pcm_stream_t stream = SND_PCM_STREAM_PLAYBACK; + + snd_ctl_t *handle; + int card, err, dev, idx; + snd_ctl_card_info_t *info; + snd_pcm_info_t *pcminfo; + snd_ctl_card_info_alloca(&info); + snd_pcm_info_alloca(&pcminfo); + + card = -1; + if (snd_card_next(&card) < 0 || card < 0) { + printf("no soundcards found...\n"); + return -1; + } + printf("**** List of %s Hardware Devices ****\n", + snd_pcm_stream_name(stream)); + while (card >= 0) { + char name[32]; + sprintf(name, "hw:%d", card); + if ((err = snd_ctl_open(&handle, name, 0)) < 0) { + printf("control open (%i): %s\n", card, snd_strerror(err)); + goto next_card; + } + if ((err = snd_ctl_card_info(handle, info)) < 0) { + printf("control hardware info (%i): %s\n", card, snd_strerror(err)); + snd_ctl_close(handle); + goto next_card; + } + dev = -1; + while (1) { + unsigned int count; + if (snd_ctl_pcm_next_device(handle, &dev)<0) + printf("snd_ctl_pcm_next_device\n"); + if (dev < 0) + break; + snd_pcm_info_set_device(pcminfo, dev); + snd_pcm_info_set_subdevice(pcminfo, 0); + snd_pcm_info_set_stream(pcminfo, stream); + if ((err = snd_ctl_pcm_info(handle, pcminfo)) < 0) { + if (err != -ENOENT) + printf("control digital audio info (%i): %s\n", card, snd_strerror(err)); + continue; + } + printf("card %i: %s [%s], device %i: %s [%s]\n", + card, snd_ctl_card_info_get_id(info), snd_ctl_card_info_get_name(info), + dev, + snd_pcm_info_get_id(pcminfo), + snd_pcm_info_get_name(pcminfo)); + count = snd_pcm_info_get_subdevices_count(pcminfo); + printf( " Subdevices: %i/%i\n", + snd_pcm_info_get_subdevices_avail(pcminfo), count); + for (idx = 0; idx < (int)count; idx++) { + snd_pcm_info_set_subdevice(pcminfo, idx); + if ((err = snd_ctl_pcm_info(handle, pcminfo)) < 0) { + printf("control digital audio playback info (%i): %s\n", card, snd_strerror(err)); + } else { + printf(" Subdevice #%d: %s\n", + idx, snd_pcm_info_get_subdevice_name(pcminfo)); + } + } + } + snd_ctl_close(handle); + next_card: + if (snd_card_next(&card) < 0) { + printf("snd_card_next\n"); + break; + } + } + return 0; +} |