Mercurial > sdl-ios-xcode

annotate test/testmultiaudio.c @ 3796:b19680c84cdf SDL-ryan-multiple-audio-device

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Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of the core and into the drivers where it belongs, and push generic responsibilities out of the drivers and into the core where they belong.
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 04 Oct 2006 19:54:23 +0000
parents db24e43972ac
children 2d77a732bd20
rev   line source
3794
db24e43972ac Test program to play audio to every available device, one at a time, then all
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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 play_through_once(void *arg, Uint8 * stream, int len)
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15 {
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16 callback_data *cbd = (callback_data *) arg;
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17 Uint8 *waveptr = sound + cbd->soundpos;
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18 int waveleft = soundlen - cbd->soundpos;
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19 int cpy = len;
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20 if (cpy > waveleft)
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21 cpy = waveleft;
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22
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23 memcpy(stream, waveptr, cpy);
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24 len -= cpy;
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25 cbd->soundpos += cpy;
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26 if (len > 0) {
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27 stream += cpy;
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28 memset(stream, spec.silence, len);
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29 cbd->done++;
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30 }
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31 }
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32
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33 static void test_multi_audio(int devcount)
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34 {
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35 callback_data cbd[64];
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36 int keep_going = 1;
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37 int i;
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38
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39 if (devcount > 64) {
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40 fprintf(stderr, "Too many devices (%d), clamping to 64...\n", devcount);
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41 devcount = 64;
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42 }
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43
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44 spec.callback = play_through_once;
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45
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46 for (i = 0; i < devcount; i++) {
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47 const char *devname = SDL_GetAudioDeviceName(i, 0);
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48 printf("playing on device #%d: ('%s')...", i, devname);
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49 fflush(stdout);
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50
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51 memset(&cbd[0], '\0', sizeof (callback_data));
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52 spec.userdata = &cbd[0];
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53 cbd[0].dev = SDL_OpenAudioDevice(devname, 0, &spec, NULL);
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54 if (cbd[0].dev == 0) {
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55 printf("Open device failed: %s\n", SDL_GetError());
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56 } else {
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57 SDL_PauseAudioDevice(cbd[0].dev, 0);
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58 while (!cbd[0].done)
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59 SDL_Delay(100);
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60 SDL_PauseAudioDevice(cbd[0].dev, 1);
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61 printf("done.\n");
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62 SDL_CloseAudioDevice(cbd[0].dev);
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63 }
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64 }
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65
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66 memset(cbd, '\0', sizeof (cbd));
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67
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68 printf("playing on all devices...\n");
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69 for (i = 0; i < devcount; i++) {
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70 const char *devname = SDL_GetAudioDeviceName(i, 0);
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71 spec.userdata = &cbd[i];
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72 cbd[i].dev = SDL_OpenAudioDevice(devname, 0, &spec, NULL);
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73 if (cbd[i].dev == 0) {
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74 printf("Open device %d failed: %s\n", i, SDL_GetError());
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75 }
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76 }
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77
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78 for (i = 0; i < devcount; i++) {
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79 if (cbd[i].dev) {
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80 SDL_PauseAudioDevice(cbd[i].dev, 0);
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81 }
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82 }
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83
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84 while (keep_going) {
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85 keep_going = 0;
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86 for (i = 0; i < devcount; i++) {
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87 if ((cbd[i].dev) && (!cbd[i].done)) {
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88 keep_going = 1;
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89 }
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90 }
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91 SDL_Delay(100);
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92 }
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93
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94 for (i = 0; i < devcount; i++) {
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95 if (cbd[i].dev) {
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96 SDL_PauseAudioDevice(cbd[i].dev, 1);
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97 SDL_CloseAudioDevice(cbd[i].dev);
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98 }
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99 }
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100
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101 printf("All done!\n");
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102 }
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103
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104
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105 int main(int argc, char **argv)
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106 {
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107 int devcount = 0;
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108
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109 /* Load the SDL library */
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110 if (SDL_Init(SDL_INIT_AUDIO) < 0) {
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111 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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112 return (1);
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113 }
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114
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115 printf("Using audio driver: %s\n", SDL_GetCurrentAudioDriver());
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116
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117 devcount = SDL_GetNumAudioDevices(0);
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118 if (devcount < 1) {
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119 fprintf(stderr, "Don't see more than one device!\n");
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120 } else {
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121 if (argv[1] == NULL) {
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122 argv[1] = "sample.wav";
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123 }
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124
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125 /* Load the wave file into memory */
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126 if (SDL_LoadWAV(argv[1], &spec, &sound, &soundlen) == NULL) {
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127 fprintf(stderr, "Couldn't load %s: %s\n", argv[1], SDL_GetError());
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128 } else {
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129 test_multi_audio(devcount);
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130 SDL_FreeWAV(sound);
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131 }
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132 }
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133
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134 SDL_Quit();
db24e43972ac Test program to play audio to every available device, one at a time, then all
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
135 return 0;
db24e43972ac Test program to play audio to every available device, one at a time, then all
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
136 }