Mercurial > SDL_sound_CoreAudio
annotate playsound/test_sdlsound.c @ 25:4acb5260d684
Made the SDL audio callback much more robust.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Wed, 19 Sep 2001 14:05:36 +0000 |
| parents | f2af6266775f |
| children | 3d34b03167f2 |
| rev | line source |
|---|---|
| 4 | 1 /* |
| 2 * SDL_sound -- An abstract sound format decoding API. | |
| 3 * Copyright (C) 2001 Ryan C. Gordon. | |
| 4 * | |
| 5 * This library is free software; you can redistribute it and/or | |
| 6 * modify it under the terms of the GNU Lesser General Public | |
| 7 * License as published by the Free Software Foundation; either | |
| 8 * version 2.1 of the License, or (at your option) any later version. | |
| 9 * | |
| 10 * This library is distributed in the hope that it will be useful, | |
| 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 * Lesser General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU Lesser General Public | |
| 16 * License along with this library; if not, write to the Free Software | |
| 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 */ | |
| 19 | |
| 20 /** | |
| 21 * This is a quick and dirty test of SDL_sound. | |
| 22 * | |
| 23 * Please see the file LICENSE in the source's root directory. | |
| 24 * | |
| 25 * This file written by Ryan C. Gordon. (icculus@clutteredmind.org) | |
| 26 */ | |
| 27 | |
| 28 #include <stdio.h> | |
| 29 #include <assert.h> | |
| 30 #include "SDL.h" | |
| 31 #include "SDL_sound.h" | |
| 32 | |
| 33 #define TEST_VERSION_MAJOR 0 | |
| 34 #define TEST_VERSION_MINOR 1 | |
| 35 #define TEST_VERSION_PATCH 0 | |
| 36 | |
| 37 | |
| 38 static void output_versions(void) | |
| 39 { | |
| 40 Sound_Version compiled; | |
| 41 Sound_Version linked; | |
| 42 SDL_version sdl_compiled; | |
| 43 const SDL_version *sdl_linked; | |
| 44 | |
| 45 SOUND_VERSION(&compiled); | |
| 46 Sound_GetLinkedVersion(&linked); | |
| 47 SDL_VERSION(&sdl_compiled); | |
| 48 sdl_linked = SDL_Linked_Version(); | |
| 49 | |
| 50 printf("test_sdlsound version %d.%d.%d.\n" | |
| 51 " Compiled against SDL_sound version %d.%d.%d,\n" | |
| 52 " and linked against %d.%d.%d.\n" | |
| 53 " Compiled against SDL version %d.%d.%d,\n" | |
| 54 " and linked against %d.%d.%d.\n\n", | |
| 55 TEST_VERSION_MAJOR, TEST_VERSION_MINOR, TEST_VERSION_PATCH, | |
| 56 compiled.major, compiled.minor, compiled.patch, | |
| 57 linked.major, linked.minor, linked.patch, | |
| 58 sdl_compiled.major, sdl_compiled.minor, sdl_compiled.patch, | |
| 59 sdl_linked->major, sdl_linked->minor, sdl_linked->patch); | |
| 60 } /* output_versions */ | |
| 61 | |
| 62 | |
| 63 static void output_decoders(void) | |
| 64 { | |
| 65 const Sound_DecoderInfo **rc = Sound_AvailableDecoders(); | |
| 66 const Sound_DecoderInfo **i; | |
| 67 | |
| 13 | 68 printf("Supported sound formats:\n"); |
| 4 | 69 if (*rc == NULL) |
| 70 printf(" * Apparently, NONE!\n"); | |
| 71 else | |
| 72 { | |
| 73 for (i = rc; *i != NULL; i++) | |
| 74 { | |
| 75 printf(" * %s: %s\n Written by %s.\n %s\n", | |
| 76 (*i)->extension, (*i)->description, | |
| 77 (*i)->author, (*i)->url); | |
| 78 } /* for */ | |
| 79 } /* else */ | |
| 80 | |
| 81 printf("\n"); | |
| 82 } /* output_decoders */ | |
| 83 | |
| 84 | |
| 85 static volatile int done_flag = 0; | |
| 86 | |
| 87 void test_callback(void *userdata, Uint8 *stream, int len) | |
| 88 { | |
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Made the SDL audio callback much more robust.
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89 static Uint8 overflow[16384]; /* this is a hack. */ |
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90 static Uint32 overflowBytes = 0; |
| 4 | 91 Sound_Sample *sample = (Sound_Sample *) userdata; |
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92 Uint32 bw = 0; /* bytes written to stream*/ |
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93 Uint32 rc; /* return code */ |
| 4 | 94 |
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95 if (overflowBytes > 0) |
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96 { |
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97 memcpy(stream, overflow, overflowBytes); |
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98 bw = overflowBytes; |
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99 overflowBytes = 0; |
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100 } /* if */ |
| 4 | 101 |
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parents:
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102 while ((bw < len) && (!done_flag)) |
| 4 | 103 { |
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104 rc = Sound_Decode(sample); |
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parents:
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105 if (rc > 0) |
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Made the SDL audio callback much more robust.
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parents:
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106 { |
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parents:
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107 if (bw + rc > len) |
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Made the SDL audio callback much more robust.
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parents:
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108 { |
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parents:
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109 overflowBytes = (bw + rc) - len; |
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110 memcpy(overflow, |
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111 ((Uint8 *) sample->buffer) + (rc - overflowBytes), |
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112 overflowBytes); |
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Made the SDL audio callback much more robust.
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113 rc -= overflowBytes; |
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Made the SDL audio callback much more robust.
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parents:
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114 } /* if */ |
| 4 | 115 |
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Made the SDL audio callback much more robust.
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parents:
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116 memcpy(stream + bw, sample->buffer, rc); |
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Made the SDL audio callback much more robust.
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parents:
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117 bw += rc; |
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Made the SDL audio callback much more robust.
Ryan C. Gordon <icculus@icculus.org>
parents:
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118 } /* if */ |
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Made the SDL audio callback much more robust.
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parents:
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119 |
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Made the SDL audio callback much more robust.
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parents:
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120 if (sample->flags & SOUND_SAMPLEFLAG_EOF) |
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Made the SDL audio callback much more robust.
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parents:
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121 done_flag = 1; |
| 4 | 122 |
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4acb5260d684
Made the SDL audio callback much more robust.
Ryan C. Gordon <icculus@icculus.org>
parents:
13
diff
changeset
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123 else if (sample->flags & SOUND_SAMPLEFLAG_ERROR) |
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Made the SDL audio callback much more robust.
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parents:
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124 { |
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parents:
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125 printf("Error condition in decoding!\n"); |
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Made the SDL audio callback much more robust.
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parents:
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126 done_flag = 1; |
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Made the SDL audio callback much more robust.
Ryan C. Gordon <icculus@icculus.org>
parents:
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127 } /* else if */ |
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Made the SDL audio callback much more robust.
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128 } /* while */ |
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Made the SDL audio callback much more robust.
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129 |
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Made the SDL audio callback much more robust.
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130 assert(bw <= len); |
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Made the SDL audio callback much more robust.
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parents:
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131 |
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Made the SDL audio callback much more robust.
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parents:
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132 if (bw < len) |
|
4acb5260d684
Made the SDL audio callback much more robust.
Ryan C. Gordon <icculus@icculus.org>
parents:
13
diff
changeset
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133 memset(stream + bw, '\0', len - bw); |
| 4 | 134 } /* test_callback */ |
| 135 | |
| 136 | |
| 137 int main(int argc, char **argv) | |
| 138 { | |
| 139 Sound_AudioInfo sound_desired; | |
| 140 SDL_AudioSpec sdl_desired; | |
| 141 Sound_Sample *sample; | |
| 142 | |
| 143 if (SDL_Init(SDL_INIT_AUDIO) == -1) | |
| 144 { | |
| 145 printf("SDL_Init(SDL_INIT_AUDIO) failed!\n" | |
| 146 " reason: [%s].\n", SDL_GetError()); | |
| 147 return(42); | |
| 148 } /* if */ | |
| 149 | |
| 150 if (!Sound_Init()) | |
| 151 { | |
| 152 printf("Sound_Init() failed!\n" | |
| 153 " reason: [%s].\n", Sound_GetError()); | |
| 154 SDL_Quit(); | |
| 155 return(42); | |
| 156 } /* if */ | |
| 157 | |
| 158 output_versions(); | |
| 159 output_decoders(); | |
| 160 | |
| 161 if (argc != 2) | |
| 162 { | |
| 163 printf("USAGE: %s <oneSupportedFile>\n", argv[0]); | |
| 164 Sound_Quit(); | |
| 165 SDL_Quit(); | |
| 166 return(42); | |
| 167 } /* if */ | |
| 168 | |
| 169 sound_desired.rate = 44100; | |
| 170 sound_desired.channels = 2; | |
| 171 sound_desired.format = AUDIO_S16; | |
| 172 | |
| 173 sample = Sound_NewSampleFromFile(argv[1], &sound_desired, 4096 * 4); | |
| 174 if (!sample) | |
| 175 { | |
| 176 printf("Sound_NewSampleFromFile(\"%s\") failed!\n" | |
| 177 " reason: [%s].\n", argv[1], Sound_GetError()); | |
| 178 Sound_Quit(); | |
| 179 SDL_Quit(); | |
| 180 return(42); | |
| 181 } /* if */ | |
| 182 | |
| 183 sdl_desired.freq = 44100; | |
| 184 sdl_desired.format = AUDIO_S16; | |
| 185 sdl_desired.channels = 2; | |
| 186 sdl_desired.samples = 4096; | |
| 187 sdl_desired.callback = test_callback; | |
| 188 sdl_desired.userdata = sample; | |
| 189 | |
| 13 | 190 #if 1 |
| 4 | 191 if ( SDL_OpenAudio(&sdl_desired, NULL) < 0 ) |
| 192 { | |
| 193 printf("SDL_OpenAudio() failed!\n" | |
| 194 " reason: [%s].\n", SDL_GetError()); | |
| 195 Sound_Quit(); | |
| 196 SDL_Quit(); | |
| 197 return(42); | |
| 198 } /* if */ | |
| 199 | |
| 200 SDL_PauseAudio(0); | |
| 201 while (!done_flag) | |
| 202 SDL_Delay(10); | |
| 13 | 203 SDL_PauseAudio(1); |
| 204 | |
| 205 /* | |
| 206 * This just decodes the file, and dumps the decoded waveform to | |
| 207 * stderr. Use with caution. | |
| 208 */ | |
| 209 #else | |
| 210 { | |
| 211 Uint32 rc; | |
| 212 while ((rc = Sound_Decode(sample)) == sample->buffer_size) | |
| 213 fwrite(sample->buffer, rc, 1, stderr); | |
| 214 } | |
| 215 #endif | |
| 216 | |
| 4 | 217 |
| 218 Sound_FreeSample(sample); | |
| 219 | |
| 220 Sound_Quit(); | |
| 221 SDL_Quit(); | |
| 222 return(0); | |
| 223 } /* main */ | |
| 224 | |
| 225 /* end of test_sdlsound.c ... */ | |
| 226 |