View difference between Paste ID: m2f28b578 and

-
+#include <stdio.h>
 #include <stdlib.h>
 #include <alsa/asoundlib.h>
 
 #include <math.h>
 
 #include "main.h"
 
 double fclip(double value, double start, double end) {
   return 0.5 * ( fabs(value-start) + (start+end) - fabs(value-end) );
 }
 
 void play(struct user_data_s* data) {
 
   static char* device = "default";
 
   /* snd_output_t* output = NULL; */
 
   int err;
   snd_pcm_t* handle;
   snd_pcm_sframes_t frames;
 
   short buffer[data->audio_info_save->frames];
   for(unsigned long int i = 0; i < data->audio_info_save->frames; i++ ) {
     buffer[i] = (short)fclip( 32767.0 * data->mono_channel[i], -32767, +32768 );
   }
 
   if ((err = snd_pcm_open(&handle, device, SND_PCM_STREAM_PLAYBACK, 0)) < 0) {
     printf("Playback open error: %s\n", snd_strerror(err));
     exit(1);
   }
 
   if ((err = snd_pcm_set_params(handle, SND_PCM_FORMAT_S16,
 				SND_PCM_ACCESS_RW_INTERLEAVED, 1,
 				data->audio_info_save->samplerate,
 				1, 500000)) < 0) {
     printf("Playback open error: %s\n", snd_strerror(err));
     exit(1);
   }
 
   for (int i = 0; i < 1; i++) {
     frames = snd_pcm_writei(handle, buffer, data->audio_info_save->frames);
 
     if (frames < 0) {
       frames = snd_pcm_recover(handle, frames, 0);
     }
     if (frames < 0) {
       printf("snd_pcm_writei failed: %s\n", snd_strerror(err));
       break;
     }
     if (frames > 0 && frames < (long)data->audio_info_save->frames) {
       printf("Short write (expected %li, wrote %li)\n",
 	     (long)data->audio_info_save->frames, frames);
     }
   }
 
   snd_pcm_close(handle);
 
 }