60 lines
2 KiB
C++
60 lines
2 KiB
C++
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#include <cstdio>
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#include <stdio.h>
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#include <stdlib.h>
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#include "/usr/include/alsa/asoundlib.h"
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int main() {
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const int bufferSize = 4096 ;
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short rightBuffer[bufferSize] ;
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short leftBuffer[bufferSize] ;
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short* bufs[2] ;
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bufs[0] = rightBuffer ;
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bufs[1] = leftBuffer ;
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int err ;
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/****** ATENTION ********/
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snd_pcm_t* _capture_handle ;
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/****** ATENTION ********/
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snd_pcm_hw_params_t* hw_params ;
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if ((err = snd_pcm_readn(_capture_handle, (void**) bufs, bufferSize)) != bufferSize) fprintf(stderr, "read from audio interface failed (%s)\n", snd_strerror(err)) ;
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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)) ;
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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)) ;
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exit(1) ;
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if ((err = snd_pcm_hw_params_set_access(_capture_handle, hw_params, SND_PCM_ACCESS_RW_NONINTERLEAVED)) < 0) fprintf(stderr, "cannot set access type (%s)\n", snd_strerror(err)) ;
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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)) ;
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exit(1) ;
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int soundSamplingRate=44100 ;
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if ((err = snd_pcm_hw_params_set_rate_near(_capture_handle, hw_params, &soundSamplingRate, 0)) < 0) fprintf(stderr, "cannot set sample rate (%s)\n", snd_strerror(err)) ;
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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)) ;
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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)) ;
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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)) ;
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exit(1) ;
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/*
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On obtient alors les echantillons avec:
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*/
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}
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