Mercurial > SDL_sound_CoreAudio

annotate playsound/playsound.c @ 112:3fcb23da06ba

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Made more robust; fixes most sample rate, etc incompatibilities.
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 04 Oct 2001 00:59:12 +0000
parents 7505dcf8d3b7
children 69cd80e80363
rev   line source
58
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1 /*
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2 * SDL_sound -- An abstract sound format decoding API.
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3 * Copyright (C) 2001 Ryan C. Gordon.
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4 *
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5 * This library is free software; you can redistribute it and/or
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6 * modify it under the terms of the GNU Lesser General Public
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7 * License as published by the Free Software Foundation; either
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8 * version 2.1 of the License, or (at your option) any later version.
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9 *
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10 * This library is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 * Lesser General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU Lesser General Public
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16 * License along with this library; if not, write to the Free Software
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17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18 */
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19
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20 /**
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21 * This is a quick and dirty test of SDL_sound.
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22 *
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23 * Please see the file LICENSE in the source's root directory.
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24 *
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25 * This file written by Ryan C. Gordon. (icculus@clutteredmind.org)
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26 */
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27
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28 #include <stdio.h>
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29 #include <string.h>
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30 #include <assert.h>
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31 #include "SDL.h"
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32 #include "SDL_sound.h"
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33
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34 #define PLAYSOUND_VER_MAJOR 0
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35 #define PLAYSOUND_VER_MINOR 1
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36 #define PLAYSOUND_VER_PATCH 2
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37
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38
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39 static void output_versions(const char *argv0)
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40 {
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41 Sound_Version compiled;
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42 Sound_Version linked;
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43 SDL_version sdl_compiled;
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44 const SDL_version *sdl_linked;
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45
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46 SOUND_VERSION(&compiled);
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47 Sound_GetLinkedVersion(&linked);
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48 SDL_VERSION(&sdl_compiled);
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49 sdl_linked = SDL_Linked_Version();
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50
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51 fprintf(stderr,
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52 "%s version %d.%d.%d.\n"
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53 " Compiled against SDL_sound version %d.%d.%d,\n"
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54 " and linked against %d.%d.%d.\n"
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55 " Compiled against SDL version %d.%d.%d,\n"
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56 " and linked against %d.%d.%d.\n\n",
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57 argv0,
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58 PLAYSOUND_VER_MAJOR, PLAYSOUND_VER_MINOR, PLAYSOUND_VER_PATCH,
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59 compiled.major, compiled.minor, compiled.patch,
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60 linked.major, linked.minor, linked.patch,
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61 sdl_compiled.major, sdl_compiled.minor, sdl_compiled.patch,
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62 sdl_linked->major, sdl_linked->minor, sdl_linked->patch);
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63 } /* output_versions */
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64
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65
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66 static void output_decoders(void)
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67 {
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68 const Sound_DecoderInfo **rc = Sound_AvailableDecoders();
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69 const Sound_DecoderInfo **i;
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70
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71 fprintf(stderr, "Supported sound formats:\n");
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72 if (rc == NULL)
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73 fprintf(stderr, " * Apparently, NONE!\n");
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74 else
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75 {
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76 for (i = rc; *i != NULL; i++)
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77 {
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78 fprintf(stderr, " * %s: %s\n Written by %s.\n %s\n",
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79 (*i)->extension, (*i)->description,
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80 (*i)->author, (*i)->url);
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81 } /* for */
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82 } /* else */
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83
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84 fprintf(stderr, "\n");
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85 } /* output_decoders */
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86
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87
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88 static volatile int done_flag = 0;
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89
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90 static void audio_callback(void *userdata, Uint8 *stream, int len)
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91 {
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92 static Uint8 overflow[16384]; /* this is a hack. */
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93 static int overflowBytes = 0;
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94 Sound_Sample *sample = (Sound_Sample *) userdata;
82
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95 int bw = 0; /* bytes written to stream*/
58
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96 Uint32 rc; /* return code */
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97
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98 if (overflowBytes > 0)
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99 {
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100 bw = (overflowBytes < len) ? overflowBytes : len;
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101 memcpy(stream, overflow, bw);
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102 overflowBytes -= bw;
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103 } /* if */
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104
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105 while ((bw < len) && (!done_flag))
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106 {
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107 rc = Sound_Decode(sample);
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108 if (rc > 0)
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109 {
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110 if ((bw + (int) rc) > len)
58
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111 {
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112 overflowBytes = (bw + rc) - len;
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113 memcpy(overflow,
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114 ((Uint8 *) sample->buffer) + (rc - overflowBytes),
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115 overflowBytes);
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116 rc -= overflowBytes;
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117 } /* if */
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118
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119 memcpy(stream + bw, sample->buffer, rc);
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120 bw += rc;
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121 } /* if */
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122
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123 if (sample->flags & SOUND_SAMPLEFLAG_EOF)
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124 done_flag = 1;
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125
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126 else if (sample->flags & SOUND_SAMPLEFLAG_ERROR)
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127 {
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128 fprintf(stderr, "Error condition in decoding!\n"
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129 " problem: [%s].\n", Sound_GetError());
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130 done_flag = 1;
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131 } /* else if */
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132 } /* while */
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133
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134 assert(bw <= len);
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135
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136 if (bw < len)
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137 memset(stream + bw, '\0', len - bw);
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138 } /* audio_callback */
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139
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140
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141 static void output_usage(const char *argv0)
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142 {
82
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diff changeset
143 fprintf(stderr,
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144 "USAGE: %s [--decoders] [soundFile1] ... [soundFileN]\n",
58
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145 argv0);
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146 } /* output_usage */
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147
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148
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149 int main(int argc, char **argv)
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150 {
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151 Sound_AudioInfo sound_desired;
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152 SDL_AudioSpec sdl_desired;
112
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diff changeset
153 SDL_AudioSpec sdl_actual;
58
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154 Sound_Sample *sample;
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155 int i;
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156
112
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157 /* !!! FIXME: Move this to a parse_cmdline() function... */
58
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158 if (argc < 2)
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159 {
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160 output_usage(argv[0]);
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161 return(42);
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Ryan C. Gordon <icculus@icculus.org>
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162 } /* if */
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163
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164 for (i = 0; i < argc; i++)
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165 {
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166 if (strncmp(argv[i], "--", 2) != 0)
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167 continue;
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168
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169 if ( (strcmp(argv[i], "--version") == 0) ||
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170 (strcmp(argv[i], "--help") == 0 ) )
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171 {
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172 output_versions(argv[0]);
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173 output_usage(argv[0]);
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174 } /* if */
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175
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176 else if (strcmp(argv[i], "--decoders") == 0)
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177 {
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178 if (!Sound_Init())
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179 {
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180 fprintf(stderr, "Sound_Init() failed!\n"
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181 " reason: [%s].\n", Sound_GetError());
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182 SDL_Quit();
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183 return(42);
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184 } /* if */
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185
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186 output_decoders();
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187 Sound_Quit();
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188 return(0);
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189 } /* else if */
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190
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191 else
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192 {
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193 fprintf(stderr, "unknown option: \"%s\"\n", argv[i]);
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194 return(42);
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195 } /* else */
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196 } /* for */
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197
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198 if (SDL_Init(SDL_INIT_AUDIO) == -1)
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199 {
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200 fprintf(stderr, "SDL_Init(SDL_INIT_AUDIO) failed!\n"
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201 " reason: [%s].\n", SDL_GetError());
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202 return(42);
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Ryan C. Gordon <icculus@icculus.org>
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203 } /* if */
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204
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205 if (!Sound_Init())
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206 {
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207 fprintf(stderr, "Sound_Init() failed!\n"
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208 " reason: [%s].\n", Sound_GetError());
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209 SDL_Quit();
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210 return(42);
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Ryan C. Gordon <icculus@icculus.org>
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211 } /* if */
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212
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213 for (i = 1; i < argc; i++)
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214 {
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diff changeset
215 if (strncmp(argv[i], "--", 2) == 0)
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216 continue;
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217
112
3fcb23da06ba Made more robust; fixes most sample rate, etc incompatibilities.
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diff changeset
218 sample = Sound_NewSampleFromFile(argv[i], NULL, 4096 * 4);
58
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diff changeset
219 if (!sample)
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220 {
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diff changeset
221 fprintf(stderr, "Couldn't load \"%s\"!\n"
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222 " reason: [%s].\n", argv[i], Sound_GetError());
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223 continue;
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224 } /* if */
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225
112
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diff changeset
226 sdl_desired.freq = sample->actual.rate;
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diff changeset
227 sdl_desired.format = sample->actual.format;
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diff changeset
228 sdl_desired.channels = sample->actual.channels;
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diff changeset
229 sdl_desired.samples = 4096;
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Ryan C. Gordon <icculus@icculus.org>
parents: 82
diff changeset
230 sdl_desired.callback = audio_callback;
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Ryan C. Gordon <icculus@icculus.org>
parents: 82
diff changeset
231 sdl_desired.userdata = sample;
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parents: 82
diff changeset
232
3fcb23da06ba Made more robust; fixes most sample rate, etc incompatibilities.
Ryan C. Gordon <icculus@icculus.org>
parents: 82
diff changeset
233 if (SDL_OpenAudio(&sdl_desired, NULL) < 0)
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parents: 82
diff changeset
234 {
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Ryan C. Gordon <icculus@icculus.org>
parents: 82
diff changeset
235 fprintf(stderr, "Couldn't open audio device!\n"
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parents: 82
diff changeset
236 " reason: [%s].\n", SDL_GetError());
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parents: 82
diff changeset
237 Sound_Quit();
3fcb23da06ba Made more robust; fixes most sample rate, etc incompatibilities.
Ryan C. Gordon <icculus@icculus.org>
parents: 82
diff changeset
238 SDL_Quit();
3fcb23da06ba Made more robust; fixes most sample rate, etc incompatibilities.
Ryan C. Gordon <icculus@icculus.org>
parents: 82
diff changeset
239 return(42);
3fcb23da06ba Made more robust; fixes most sample rate, etc incompatibilities.
Ryan C. Gordon <icculus@icculus.org>
parents: 82
diff changeset
240 } /* if */
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parents: 82
diff changeset
241
3fcb23da06ba Made more robust; fixes most sample rate, etc incompatibilities.
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diff changeset
242 printf("Now playing [%s]...\n", argv[i]);
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diff changeset
243
58
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244 done_flag = 0;
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diff changeset
245 SDL_PauseAudio(0);
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parents:
diff changeset
246 while (!done_flag)
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
247 SDL_Delay(10);
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248 SDL_PauseAudio(1);
112
3fcb23da06ba Made more robust; fixes most sample rate, etc incompatibilities.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
249 SDL_CloseAudio(); /* reopen with next sample's format if possible */
58
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250
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Ryan C. Gordon <icculus@icculus.org>
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251 Sound_FreeSample(sample);
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
252 } /* for */
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253
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Ryan C. Gordon <icculus@icculus.org>
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254 Sound_Quit();
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Ryan C. Gordon <icculus@icculus.org>
parents:
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255 SDL_Quit();
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Ryan C. Gordon <icculus@icculus.org>
parents:
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256 return(0);
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Ryan C. Gordon <icculus@icculus.org>
parents:
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257 } /* main */
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Ryan C. Gordon <icculus@icculus.org>
parents:
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258
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Ryan C. Gordon <icculus@icculus.org>
parents:
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259 /* end of playsound.c ... */
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Ryan C. Gordon <icculus@icculus.org>
parents:
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260