Mercurial > sdl-ios-xcode

annotate test/testaudioinfo.c @ 2661:d38309be5178 gsoc2008_audio_resampling

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The windowed sinc filter generation code seems to be working fine. The FIR filtering code is also now working reasonably well. Occasionally the FIR filter will pop, but setting the normalization factor lower seems to help this. I suspect the problem is in the fixed point multiply/add. I also have a hunch the zero stuffing/sample discarding code is not correct, and I'll look at that soon to get it sorted out.
author Aaron Wishnick <schnarf@gmail.com>
date Wed, 02 Jul 2008 08:04:50 +0000
parents 866052b01ee5
children 9de326b3099c
rev   line source
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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1 #include "SDL.h"
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2
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3 static void
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4 print_devices(int iscapture)
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5 {
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6 const char *typestr = ((iscapture) ? "capture" : "output");
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7 int n = SDL_GetNumAudioDevices(iscapture);
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8
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9 printf("%s devices:\n", typestr);
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10
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11 if (n == -1)
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12 printf(" Driver can't detect specific devices.\n\n", typestr);
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13 else if (n == 0)
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14 printf(" No %s devices found.\n\n", typestr);
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15 else {
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16 int i;
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17 for (i = 0; i < n; i++) {
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18 printf(" %s\n", SDL_GetAudioDeviceName(i, iscapture));
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19 }
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20 printf("\n");
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21 }
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22 }
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23
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24 int
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25 main(int argc, char **argv)
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26 {
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27 /* Print available audio drivers */
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28 int n = SDL_GetNumAudioDrivers();
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29 if (n == 0) {
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30 printf("No built-in audio drivers\n\n");
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31 } else {
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32 int i;
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33 printf("Built-in audio drivers:\n");
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34 for (i = 0; i < n; ++i) {
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35 printf(" %s\n", SDL_GetAudioDriver(i));
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36 }
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37 printf("\n");
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38 }
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39
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40 /* Load the SDL library */
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41 if (SDL_Init(SDL_INIT_AUDIO) < 0) {
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42 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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43 return (1);
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44 }
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45
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46 printf("Using audio driver: %s\n\n", SDL_GetCurrentAudioDriver());
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47
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48 print_devices(0);
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49 print_devices(1);
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50
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51 SDL_Quit();
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52 return 0;
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53 }