Mercurial > sdl-ios-xcode

annotate test/testloadso.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 2c835d58faad
children 9de326b3099c
rev   line source
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dcdb175c2829 Merged r2899:2900 from SDL-1.2 branch to trunk: testloadso program.
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1
dcdb175c2829 Merged r2899:2900 from SDL-1.2 branch to trunk: testloadso program.
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2 /* Test program to test dynamic loading with the loadso subsystem.
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3 */
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4
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5 #include <stdio.h>
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6 #include <stdlib.h>
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7
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8 #include "SDL.h"
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10 typedef int (*fntype) (const char *);
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12 int
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13 main(int argc, char *argv[])
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14 {
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15 int retval = 0;
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16 int hello = 0;
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17 const char *libname = NULL;
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18 const char *symname = NULL;
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19 void *lib = NULL;
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20 fntype fn = NULL;
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22 if (argc != 3) {
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23 const char *app = argv[0];
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24 fprintf(stderr, "USAGE: %s <library> <functionname>\n", app);
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25 fprintf(stderr, " %s --hello <lib with puts()>\n", app);
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26 return 1;
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27 }
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29 /* Initialize SDL */
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30 if (SDL_Init(0) < 0) {
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31 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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32 return 2;
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33 }
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35 if (strcmp(argv[1], "--hello") == 0) {
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36 hello = 1;
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37 libname = argv[2];
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38 symname = "puts";
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39 } else {
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40 libname = argv[1];
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41 symname = argv[2];
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42 }
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43
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44 lib = SDL_LoadObject(libname);
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45 if (lib == NULL) {
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46 fprintf(stderr, "SDL_LoadObject('%s') failed: %s\n",
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47 libname, SDL_GetError());
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48 retval = 3;
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49 } else {
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50 fn = (fntype) SDL_LoadFunction(lib, symname);
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51 if (fn == NULL) {
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52 fprintf(stderr, "SDL_LoadFunction('%s') failed: %s\n",
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53 symname, SDL_GetError());
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54 retval = 4;
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55 } else {
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56 printf("Found %s in %s at %p\n", symname, libname, fn);
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57 if (hello) {
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58 printf("Calling function...\n");
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59 fflush(stdout);
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60 fn(" HELLO, WORLD!\n");
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61 printf("...apparently, we survived. :)\n");
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62 printf("Unloading library...\n");
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63 fflush(stdout);
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64 }
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65 }
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66 SDL_UnloadObject(lib);
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67 }
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68 SDL_Quit();
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69 return (0);
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70 }