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#include <stdio.h>
#include <string.h>
#include "../include/asoundlib.h"
void info_channel(snd_pcm_t *handle, int channel, char *id)
{
snd_pcm_stream_info_t stream_info;
int err;
bzero(&stream_info, sizeof(stream_info));
stream_info.channel = channel;
if ((err = snd_pcm_stream_info(handle, &stream_info))<0) {
fprintf(stderr, "channel info error: %s\n", snd_strerror(err));
return;
}
printf("%s INFO:\n", id);
printf(" subdevice : %i\n", stream_info.subdevice);
printf(" subname : '%s'\n", stream_info.subname);
printf(" channel : %i\n", stream_info.channel);
printf(" mode : ");
switch (stream_info.mode) {
case SND_PCM_MODE_FRAME:
printf("frame\n");
break;
case SND_PCM_MODE_FRAGMENT:
printf("fragment\n");
break;
default:
printf("unknown\n");
}
printf(" sync : 0x%x, 0x%x, 0x%x, 0x%x\n",
stream_info.sync.id32[0],
stream_info.sync.id32[1],
stream_info.sync.id32[2],
stream_info.sync.id32[3]);
printf(" flags :");
if (stream_info.flags & SND_PCM_STREAM_INFO_MMAP)
printf(" mmap");
if (stream_info.flags & SND_PCM_STREAM_INFO_FRAME)
printf(" frame");
if (stream_info.flags & SND_PCM_STREAM_INFO_FRAGMENT)
printf(" fragment");
if (stream_info.flags & SND_PCM_STREAM_INFO_BATCH)
printf(" batch");
if (stream_info.flags & SND_PCM_STREAM_INFO_INTERLEAVE)
printf(" interleave");
if (stream_info.flags & SND_PCM_STREAM_INFO_NONINTERLEAVE)
printf(" noninterleave");
if (stream_info.flags & SND_PCM_STREAM_INFO_BLOCK_TRANSFER)
printf(" block_transfer");
if (stream_info.flags & SND_PCM_STREAM_INFO_OVERRANGE)
printf(" overrange");
printf("\n");
printf(" formats :");
if (stream_info.formats & SND_PCM_FMT_MU_LAW)
printf(" mu-Law");
if (stream_info.formats & SND_PCM_FMT_A_LAW)
printf(" a-Law");
if (stream_info.formats & SND_PCM_FMT_IMA_ADPCM)
printf(" IMA-ADPCM");
if (stream_info.formats & SND_PCM_FMT_U8)
printf(" U8");
if (stream_info.formats & SND_PCM_FMT_S16_LE)
printf(" S16-LE");
if (stream_info.formats & SND_PCM_FMT_S16_BE)
printf(" S16-BE");
if (stream_info.formats & SND_PCM_FMT_S8)
printf(" S8");
if (stream_info.formats & SND_PCM_FMT_U16_LE)
printf(" U16-LE");
if (stream_info.formats & SND_PCM_FMT_U16_BE)
printf(" U16-BE");
if (stream_info.formats & SND_PCM_FMT_MPEG)
printf(" MPEG");
if (stream_info.formats & SND_PCM_FMT_GSM)
printf(" GSM");
if (stream_info.formats & SND_PCM_FMT_S24_LE)
printf(" S24-LE");
if (stream_info.formats & SND_PCM_FMT_S24_BE)
printf(" S24-BE");
if (stream_info.formats & SND_PCM_FMT_U24_LE)
printf(" U24-LE");
if (stream_info.formats & SND_PCM_FMT_U24_BE)
printf(" U24-BE");
if (stream_info.formats & SND_PCM_FMT_S32_LE)
printf(" S32-LE");
if (stream_info.formats & SND_PCM_FMT_S32_BE)
printf(" S32-BE");
if (stream_info.formats & SND_PCM_FMT_U32_LE)
printf(" U32-LE");
if (stream_info.formats & SND_PCM_FMT_U32_BE)
printf(" U32-BE");
if (stream_info.formats & SND_PCM_FMT_FLOAT)
printf(" Float");
if (stream_info.formats & SND_PCM_FMT_FLOAT64)
printf(" Float64");
if (stream_info.formats & SND_PCM_FMT_IEC958_SUBFRAME_LE)
printf(" IEC958-LE");
if (stream_info.formats & SND_PCM_FMT_IEC958_SUBFRAME_BE)
printf(" IEC958-BE");
if (stream_info.formats & SND_PCM_FMT_SPECIAL)
printf(" Special");
printf("\n");
printf(" rates :");
if (stream_info.rates & SND_PCM_RATE_CONTINUOUS)
printf(" Continuous");
if (stream_info.rates & SND_PCM_RATE_KNOT)
printf(" Knot");
if (stream_info.rates & SND_PCM_RATE_8000)
printf(" 8000");
if (stream_info.rates & SND_PCM_RATE_11025)
printf(" 11025");
if (stream_info.rates & SND_PCM_RATE_16000)
printf(" 16000");
if (stream_info.rates & SND_PCM_RATE_22050)
printf(" 22050");
if (stream_info.rates & SND_PCM_RATE_32000)
printf(" 32000");
if (stream_info.rates & SND_PCM_RATE_44100)
printf(" 44100");
if (stream_info.rates & SND_PCM_RATE_48000)
printf(" 48000");
if (stream_info.rates & SND_PCM_RATE_88200)
printf(" 88200");
if (stream_info.rates & SND_PCM_RATE_96000)
printf(" 96000");
if (stream_info.rates & SND_PCM_RATE_176400)
printf(" 176400");
if (stream_info.rates & SND_PCM_RATE_192000)
printf(" 192000");
printf("\n");
printf(" min_rate : %i\n", stream_info.min_rate);
printf(" max_rate : %i\n", stream_info.max_rate);
printf(" min_channels : %i\n", stream_info.min_channels);
printf(" max_channels : %i\n", stream_info.max_channels);
printf(" buffer_size : %i\n", stream_info.buffer_size);
printf(" min_frag_size : %i\n", stream_info.min_fragment_size);
printf(" max_frag_size : %i\n", stream_info.max_fragment_size);
printf(" fragment_align : %i\n", stream_info.fragment_align);
printf(" fifo_size : %i\n", stream_info.fifo_size);
printf(" mmap_size : %li\n", stream_info.mmap_size);
printf(" mixer_device : %i\n", stream_info.mixer_device);
printf(" mixer_eid : '%s',%i,%i\n", stream_info.mixer_eid.name, stream_info.mixer_eid.index, stream_info.mixer_eid.type);
}
void info(void)
{
snd_pcm_t *handle;
snd_pcm_info_t info;
int err;
if ((err = snd_pcm_open(&handle, 0, 0, SND_PCM_OPEN_DUPLEX))<0) {
fprintf(stderr, "open error: %s\n", snd_strerror(err));
return;
}
if ((err = snd_pcm_info(handle, &info))<0) {
fprintf(stderr, "pcm info error: %s\n", snd_strerror(err));
return;
}
printf("INFO:\n");
printf(" type : 0x%x\n", info.type);
printf(" flags : 0x%x\n", info.flags);
printf(" id : '%s'\n", info.id);
printf(" name : '%s'\n", info.name);
printf(" playback : %i\n", info.playback);
printf(" capture : %i\n", info.capture);
if (info.flags & SND_PCM_INFO_PLAYBACK)
info_channel(handle, SND_PCM_STREAM_PLAYBACK, "Playback");
if (info.flags & SND_PCM_INFO_CAPTURE)
info_channel(handle, SND_PCM_STREAM_CAPTURE, "Capture");
snd_pcm_close(handle);
}
int main(void )
{
info();
return 0;
}
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