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annotate test/loopwave.c @ 3092:cad1aefa2ed9

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Date: Thu, 12 Mar 2009 15:14:38 +0200 From: "Mike Gorchak" Subject: New QNX patches In photon.tar.gz there are new files to be placed into ./src/video/photon/ directory. qnx3.diff - new patches for QNX support. Since I've found a lot of bugs in the new GF QNX Graphics Framework and I'm suspended development for GF driver until already found bugs will be fixed and switched to Photon driver implementation. sdl.diff - I've found that renderer creation result has not been checked and SDL shows error like: "there is no current renderer", now SDL will show correct error which was set be renderer.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 17 Mar 2009 03:24:22 +0000
parents 8b76cc268771
children aecbdf3362c3
rev   line source
0
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1
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2 /* Program to load a wave file and loop playing it using SDL sound */
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3
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4 /* loopwaves.c is much more robust in handling WAVE files --
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5 This is only for simple WAVEs
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6 */
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7 #include "SDL_config.h"
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8
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9 #include <stdio.h>
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10 #include <stdlib.h>
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11
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12 #if HAVE_SIGNAL_H
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13 #include <signal.h>
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14 #endif
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15
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16 #include "SDL.h"
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17 #include "SDL_audio.h"
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18
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19 struct
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20 {
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21 SDL_AudioSpec spec;
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22 Uint8 *sound; /* Pointer to wave data */
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23 Uint32 soundlen; /* Length of wave data */
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24 int soundpos; /* Current play position */
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25 } wave;
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26
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27
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28 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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29 static void
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30 quit(int rc)
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31 {
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32 SDL_Quit();
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33 exit(rc);
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34 }
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35
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36
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37 void SDLCALL
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38 fillerup(void *unused, Uint8 * stream, int len)
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39 {
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40 Uint8 *waveptr;
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41 int waveleft;
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42
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43 /* Set up the pointers */
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44 waveptr = wave.sound + wave.soundpos;
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45 waveleft = wave.soundlen - wave.soundpos;
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46
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47 /* Go! */
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48 while (waveleft <= len) {
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49 SDL_memcpy(stream, waveptr, waveleft);
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50 stream += waveleft;
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51 len -= waveleft;
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52 waveptr = wave.sound;
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53 waveleft = wave.soundlen;
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54 wave.soundpos = 0;
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55 }
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56 SDL_memcpy(stream, waveptr, len);
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57 wave.soundpos += len;
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58 }
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59
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60 static int done = 0;
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61 void
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62 poked(int sig)
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63 {
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64 done = 1;
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65 }
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66
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67 int
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68 main(int argc, char *argv[])
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69 {
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70 /* Load the SDL library */
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71 if (SDL_Init(SDL_INIT_AUDIO) < 0) {
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72 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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73 return (1);
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74 }
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75
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76 if (argv[1] == NULL) {
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77 argv[1] = "sample.wav";
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78 }
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79 /* Load the wave file into memory */
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80 if (SDL_LoadWAV(argv[1], &wave.spec, &wave.sound, &wave.soundlen) == NULL) {
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81 fprintf(stderr, "Couldn't load %s: %s\n", argv[1], SDL_GetError());
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82 quit(1);
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83 }
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84
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85 wave.spec.callback = fillerup;
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86 #if HAVE_SIGNAL_H
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87 /* Set the signals */
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88 #ifdef SIGHUP
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89 signal(SIGHUP, poked);
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90 #endif
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91 signal(SIGINT, poked);
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92 #ifdef SIGQUIT
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93 signal(SIGQUIT, poked);
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94 #endif
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95 signal(SIGTERM, poked);
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96 #endif /* HAVE_SIGNAL_H */
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97
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98 /* Initialize fillerup() variables */
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99 if (SDL_OpenAudio(&wave.spec, NULL) < 0) {
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100 fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError());
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101 SDL_FreeWAV(wave.sound);
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102 quit(2);
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103 }
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104 SDL_PauseAudio(0);
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105
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106 /* Let the audio run */
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107 while (!done && (SDL_GetAudioStatus() == SDL_AUDIO_PLAYING))
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108 SDL_Delay(1000);
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109
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110 /* Clean up on signal */
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111 SDL_CloseAudio();
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112 SDL_FreeWAV(wave.sound);
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113 SDL_Quit();
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114 return (0);
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115 }