0,0 → 1,90 |
#include <stdio.h> |
#include <stdlib.h> |
#include <alsa/asoundlib.h> |
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int rate = 44100; |
int exact_rate; |
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main (int argc, char *argv[]) |
{ |
int i; |
int err; |
short buf[128]; |
snd_pcm_t *capture_handle; |
snd_pcm_hw_params_t *hw_params; |
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if ((err = snd_pcm_open (&capture_handle, argv[1], SND_PCM_STREAM_CAPTURE, 0)) < 0) { |
fprintf (stderr, "cannot open audio device %s (%s)\n", |
argv[1], |
snd_strerror (err)); |
exit (1); |
} |
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if ((err = snd_pcm_hw_params_malloc (&hw_params)) < 0) { |
fprintf (stderr, "cannot allocate hardware parameter structure (%s)\n", |
snd_strerror (err)); |
exit (1); |
} |
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if ((err = snd_pcm_hw_params_any (capture_handle, hw_params)) < 0) { |
fprintf (stderr, "cannot initialize hardware parameter structure (%s)\n", |
snd_strerror (err)); |
exit (1); |
} |
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if ((err = snd_pcm_hw_params_set_access (capture_handle, hw_params, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0) { |
fprintf (stderr, "cannot set access type (%s)\n", |
snd_strerror (err)); |
exit (1); |
} |
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if ((err = snd_pcm_hw_params_set_format (capture_handle, hw_params, SND_PCM_FORMAT_S16_LE)) < 0) { |
fprintf (stderr, "cannot set sample format (%s)\n", |
snd_strerror (err)); |
exit (1); |
} |
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exact_rate = rate; |
if ((err = snd_pcm_hw_params_set_rate_near (capture_handle, hw_params, &exact_rate, 0)) < 0) { |
fprintf (stderr, "cannot set sample rate (%s)\n", |
snd_strerror (err)); |
exit (1); |
} |
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if ((err = snd_pcm_hw_params_set_channels (capture_handle, hw_params, 2)) < 0) { |
fprintf (stderr, "cannot set channel count (%s)\n", |
snd_strerror (err)); |
exit (1); |
} |
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if ((err = snd_pcm_hw_params (capture_handle, hw_params)) < 0) { |
fprintf (stderr, "cannot set parameters (%s)\n", |
snd_strerror (err)); |
exit (1); |
} |
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snd_pcm_hw_params_free (hw_params); |
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if ((err = snd_pcm_prepare (capture_handle)) < 0) { |
fprintf (stderr, "cannot prepare audio interface for use (%s)\n", |
snd_strerror (err)); |
exit (1); |
} |
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for (i = 0; i < 10; ++i) { |
if ((err = snd_pcm_readi (capture_handle, buf, 128)) != 128) { |
fprintf (stderr, "read from audio interface failed (%s)\n", |
snd_strerror (err)); |
exit (1); |
} |
/*if ((err = snd_pcm_writei (capture_handle, buf, 128)) != 128) { |
fprintf (stderr, "write to audio interface failed (%s)\n", |
snd_strerror (err)); |
exit (1); |
}*/ |
} |
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snd_pcm_close (capture_handle); |
exit (0); |
} |
Property changes: |
Added: svn:mergeinfo |