Mercurial > sdl-ios-xcode

annotate test/testmultiaudio.c @ 2427:32b9909db651 gsoc2008_iphone

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changed macro MAX_G_FORCE to SDL_IPHONE_MAX_GFORCE and moved it to the SDL_config_iphoneos.h file. This should allow users to convert between the Sint16 returned by polling the joystick and units of g-force, which better describe what is going on with the iPhone (and are what the iPhone OS actually gives you). This conversion wouldn't be necessary except that we'd need floating point to store everything as g-force.
author Holmes Futrell <hfutrell@umail.ucsb.edu>
date Fri, 15 Aug 2008 00:46:58 +0000
parents 9fcde304c7b6
children eec7adc3d1c5
rev   line source
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1 #include "SDL.h"
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2
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3 static SDL_AudioSpec spec;
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4 static Uint8 *sound = NULL; /* Pointer to wave data */
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5 static Uint32 soundlen = 0; /* Length of wave data */
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6
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7 typedef struct
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8 {
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9 SDL_AudioDeviceID dev;
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10 int soundpos;
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11 volatile int done;
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12 } callback_data;
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13
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14 void SDLCALL
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15 play_through_once(void *arg, Uint8 * stream, int len)
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16 {
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17 callback_data *cbd = (callback_data *) arg;
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18 Uint8 *waveptr = sound + cbd->soundpos;
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19 int waveleft = soundlen - cbd->soundpos;
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20 int cpy = len;
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21 if (cpy > waveleft)
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22 cpy = waveleft;
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23
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24 SDL_memcpy(stream, waveptr, cpy);
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25 len -= cpy;
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26 cbd->soundpos += cpy;
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27 if (len > 0) {
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28 stream += cpy;
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29 SDL_memset(stream, spec.silence, len);
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30 cbd->done++;
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31 }
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32 }
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33
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34 static void
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35 test_multi_audio(int devcount)
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36 {
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37 callback_data cbd[64];
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38 int keep_going = 1;
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39 int i;
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40
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41 if (devcount > 64) {
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42 fprintf(stderr, "Too many devices (%d), clamping to 64...\n",
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43 devcount);
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44 devcount = 64;
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45 }
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46
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47 spec.callback = play_through_once;
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48
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49 for (i = 0; i < devcount; i++) {
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50 const char *devname = SDL_GetAudioDeviceName(i, 0);
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51 printf("playing on device #%d: ('%s')...", i, devname);
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52 fflush(stdout);
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53
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54 SDL_memset(&cbd[0], '\0', sizeof(callback_data));
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55 spec.userdata = &cbd[0];
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56 cbd[0].dev = SDL_OpenAudioDevice(devname, 0, &spec, NULL);
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57 if (cbd[0].dev == 0) {
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58 printf("Open device failed: %s\n", SDL_GetError());
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59 } else {
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60 SDL_PauseAudioDevice(cbd[0].dev, 0);
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61 while (!cbd[0].done)
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62 SDL_Delay(100);
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63 SDL_PauseAudioDevice(cbd[0].dev, 1);
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64 printf("done.\n");
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65 SDL_CloseAudioDevice(cbd[0].dev);
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66 }
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67 }
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68
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69 SDL_memset(cbd, '\0', sizeof(cbd));
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70
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71 printf("playing on all devices...\n");
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72 for (i = 0; i < devcount; i++) {
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73 const char *devname = SDL_GetAudioDeviceName(i, 0);
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74 spec.userdata = &cbd[i];
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75 cbd[i].dev = SDL_OpenAudioDevice(devname, 0, &spec, NULL);
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76 if (cbd[i].dev == 0) {
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77 printf("Open device %d failed: %s\n", i, SDL_GetError());
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78 }
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79 }
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80
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81 for (i = 0; i < devcount; i++) {
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82 if (cbd[i].dev) {
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83 SDL_PauseAudioDevice(cbd[i].dev, 0);
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84 }
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85 }
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86
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87 while (keep_going) {
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88 keep_going = 0;
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89 for (i = 0; i < devcount; i++) {
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90 if ((cbd[i].dev) && (!cbd[i].done)) {
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91 keep_going = 1;
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92 }
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93 }
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94 SDL_Delay(100);
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95 }
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96
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97 for (i = 0; i < devcount; i++) {
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98 if (cbd[i].dev) {
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99 SDL_PauseAudioDevice(cbd[i].dev, 1);
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100 SDL_CloseAudioDevice(cbd[i].dev);
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101 }
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102 }
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103
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104 printf("All done!\n");
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105 }
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106
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107
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108 int
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109 main(int argc, char **argv)
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110 {
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111 int devcount = 0;
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112
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113 /* Load the SDL library */
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114 if (SDL_Init(SDL_INIT_AUDIO) < 0) {
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115 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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116 return (1);
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117 }
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118
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119 printf("Using audio driver: %s\n", SDL_GetCurrentAudioDriver());
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120
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121 devcount = SDL_GetNumAudioDevices(0);
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122 if (devcount < 1) {
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123 fprintf(stderr, "Don't see any specific audio devices!\n");
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124 } else {
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125 if (argv[1] == NULL) {
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126 argv[1] = "sample.wav";
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127 }
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128
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129 /* Load the wave file into memory */
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130 if (SDL_LoadWAV(argv[1], &spec, &sound, &soundlen) == NULL) {
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131 fprintf(stderr, "Couldn't load %s: %s\n", argv[1],
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132 SDL_GetError());
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133 } else {
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134 test_multi_audio(devcount);
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135 SDL_FreeWAV(sound);
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136 }
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137 }
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138
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139 SDL_Quit();
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140 return 0;
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141 }