Mercurial > SDL_sound_CoreAudio
annotate decoders/modplug.c @ 312:498240aa76f1
Seek implementations.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Wed, 24 Apr 2002 20:47:21 +0000 |
| parents | c97be6e1bd27 |
| children | f72fd79d6e76 |
| rev | line source |
|---|---|
| 208 | 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 * Module player for SDL_sound. This driver handles anything that ModPlug does. | |
| 22 * | |
| 23 * Please see the file COPYING in the source's root directory. | |
| 24 * | |
| 25 * This file written by Torbjörn Andersson (d91tan@Update.UU.SE) | |
| 26 */ | |
| 27 | |
| 28 #if HAVE_CONFIG_H | |
| 29 # include <config.h> | |
| 30 #endif | |
| 31 | |
| 32 #ifdef SOUND_SUPPORTS_MODPLUG | |
| 33 | |
| 34 #include <stdio.h> | |
| 35 #include <stdlib.h> | |
| 36 #include <string.h> | |
| 37 #include <assert.h> | |
| 38 | |
| 39 #include "SDL_sound.h" | |
| 40 | |
| 41 #define __SDL_SOUND_INTERNAL__ | |
| 42 #include "SDL_sound_internal.h" | |
| 43 | |
| 44 #include "modplug.h" | |
| 45 | |
| 46 | |
| 47 static int MODPLUG_init(void); | |
| 48 static void MODPLUG_quit(void); | |
| 49 static int MODPLUG_open(Sound_Sample *sample, const char *ext); | |
| 50 static void MODPLUG_close(Sound_Sample *sample); | |
| 51 static Uint32 MODPLUG_read(Sound_Sample *sample); | |
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52 static int MODPLUG_rewind(Sound_Sample *sample); |
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53 static int MODPLUG_seek(Sound_Sample *sample, Uint32 ms); |
| 208 | 54 |
| 55 static const char *extensions_modplug[] = | |
| 56 { | |
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57 /* The XMMS plugin is apparently able to load compressed modules as |
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58 * well, but libmodplug does not handle this. |
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59 */ |
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60 "669", /* Composer 669 / UNIS 669 module */ |
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61 "AMF", /* ASYLUM Music Format / Advanced Music Format(DSM) */ |
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62 "AMS", /* AMS module */ |
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63 "DBM", /* DigiBooster Pro Module */ |
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64 "DMF", /* DMF DELUSION DIGITAL MUSIC FILEFORMAT (X-Tracker) */ |
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65 "DSM", /* DSIK Internal Format module */ |
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66 "FAR", /* Farandole module */ |
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67 "IT", /* Impulse Tracker IT file */ |
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68 "MDL", /* DigiTracker module */ |
| 208 | 69 #if 0 |
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70 "J2B", /* Not implemented? What is it anyway? */ |
| 208 | 71 #endif |
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72 "MED", /* OctaMed MED file */ |
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73 "MOD", /* ProTracker / NoiseTracker MOD/NST file */ |
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74 "MT2", /* MadTracker 2.0 */ |
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75 "MTM", /* MTM file */ |
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76 "OKT", /* Oktalyzer module */ |
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77 "PTM", /* PTM PolyTracker module */ |
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78 "PSM", /* PSM module */ |
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79 "S3M", /* ScreamTracker file */ |
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80 "STM", /* ST 2.xx */ |
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81 "ULT", |
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82 "UMX", |
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83 "XM", /* FastTracker II */ |
| 208 | 84 NULL |
| 85 }; | |
| 86 | |
| 87 const Sound_DecoderFunctions __Sound_DecoderFunctions_MODPLUG = | |
| 88 { | |
| 89 { | |
| 90 extensions_modplug, | |
| 91 "Play modules through ModPlug", | |
| 92 "Torbjörn Andersson <d91tan@Update.UU.SE>", | |
| 93 "http://modplug-xmms.sourceforge.net/" | |
| 94 }, | |
| 95 | |
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96 MODPLUG_init, /* init() method */ |
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97 MODPLUG_quit, /* quit() method */ |
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98 MODPLUG_open, /* open() method */ |
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99 MODPLUG_close, /* close() method */ |
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100 MODPLUG_read, /* read() method */ |
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101 MODPLUG_rewind, /* rewind() method */ |
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102 MODPLUG_seek /* seek() method */ |
| 208 | 103 }; |
| 104 | |
| 105 | |
| 106 static int MODPLUG_init(void) | |
| 107 { | |
| 108 ModPlug_Settings settings; | |
| 109 | |
| 110 /* The settings will require some experimenting. I've borrowed some | |
| 111 * of them from the XMMS ModPlug plugin. | |
| 112 */ | |
| 113 settings.mFlags = | |
| 114 MODPLUG_ENABLE_OVERSAMPLING | |
| 115 | MODPLUG_ENABLE_NOISE_REDUCTION | |
| 116 | MODPLUG_ENABLE_REVERB | |
| 117 | MODPLUG_ENABLE_MEGABASS | |
| 118 | MODPLUG_ENABLE_SURROUND; | |
| 119 settings.mChannels = 2; | |
| 120 settings.mBits = 16; | |
| 121 settings.mFrequency = 44100; | |
| 122 settings.mResamplingMode = MODPLUG_RESAMPLE_FIR; | |
| 123 settings.mReverbDepth = 30; | |
| 124 settings.mReverbDelay = 100; | |
| 125 settings.mBassAmount = 40; | |
| 126 settings.mBassRange = 30; | |
| 127 settings.mSurroundDepth = 20; | |
| 128 settings.mSurroundDelay = 20; | |
| 129 settings.mLoopCount = 0; | |
| 130 | |
| 131 ModPlug_SetSettings(&settings); | |
| 132 return(1); /* success. */ | |
| 133 } /* MODPLUG_init */ | |
| 134 | |
| 135 | |
| 136 static void MODPLUG_quit(void) | |
| 137 { | |
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138 /* it's a no-op. */ |
| 208 | 139 } /* MODPLUG_quit */ |
| 140 | |
| 141 | |
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142 /* |
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143 * Most MOD files I've seen have tended to be a few hundred KB, even if some |
| 208 | 144 * of them were much smaller than that. |
| 145 */ | |
| 146 #define CHUNK_SIZE 65536 | |
| 147 | |
| 148 static int MODPLUG_open(Sound_Sample *sample, const char *ext) | |
| 149 { | |
| 150 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; | |
| 151 ModPlugFile *module; | |
| 152 Uint8 *data; | |
| 153 size_t size; | |
| 154 Uint32 retval; | |
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155 int has_extension = 0; |
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156 int i; |
| 208 | 157 |
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158 /* |
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159 * Apparently ModPlug's loaders are too forgiving. They gladly accept |
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160 * streams that they shouldn't. For now, rely on file extension instead. |
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161 */ |
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162 for (i = 0; extensions_modplug[i] != NULL; i++) |
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163 { |
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164 if (__Sound_strcasecmp(ext, extensions_modplug[i]) == 0) |
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165 { |
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166 has_extension = 1; |
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167 break; |
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168 } /* if */ |
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169 } /* for */ |
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170 |
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171 if (!has_extension) |
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172 { |
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173 SNDDBG(("MODPLUG: Unrecognized file type: %s\n", ext)); |
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174 Sound_SetError("MODPLUG: Not a module file."); |
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175 return(0); |
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176 } /* if */ |
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177 |
| 208 | 178 /* ModPlug needs the entire stream in one big chunk. I don't like it, |
| 179 * but I don't think there's any way around it. | |
| 180 */ | |
| 181 data = (Uint8 *) malloc(CHUNK_SIZE); | |
| 182 BAIL_IF_MACRO(data == NULL, ERR_OUT_OF_MEMORY, 0); | |
| 183 size = 0; | |
| 184 | |
| 185 do | |
| 186 { | |
| 187 retval = SDL_RWread(internal->rw, &data[size], 1, CHUNK_SIZE); | |
| 188 size += retval; | |
| 189 if (retval == CHUNK_SIZE) | |
| 190 { | |
| 191 data = (Uint8 *) realloc(data, size + CHUNK_SIZE); | |
| 192 BAIL_IF_MACRO(data == NULL, ERR_OUT_OF_MEMORY, 0); | |
| 193 } /* if */ | |
| 194 } while (retval > 0); | |
| 195 | |
| 196 /* The buffer may be a bit too large, but that doesn't matter. I think | |
| 197 * it's safe to free it as soon as ModPlug_Load() is finished anyway. | |
| 198 */ | |
| 199 module = ModPlug_Load((void *) data, size); | |
| 200 free(data); | |
| 201 BAIL_IF_MACRO(module == NULL, "MODPLUG: Not a module file.", 0); | |
| 202 | |
| 203 SNDDBG(("MODPLUG: [%d ms] %s\n", | |
| 204 ModPlug_GetLength(module), ModPlug_GetName(module))); | |
| 205 | |
| 206 sample->actual.channels = 2; | |
| 207 sample->actual.rate = 44100; | |
| 208 sample->actual.format = AUDIO_S16SYS; | |
| 209 | |
| 210 internal->decoder_private = (void *) module; | |
| 312 | 211 sample->flags = SOUND_SAMPLEFLAG_CANSEEK; |
| 208 | 212 |
| 213 SNDDBG(("MODPLUG: Accepting data stream\n")); | |
| 214 return(1); /* we'll handle this data. */ | |
| 215 } /* MODPLUG_open */ | |
| 216 | |
| 217 | |
| 218 static void MODPLUG_close(Sound_Sample *sample) | |
| 219 { | |
| 220 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; | |
| 221 ModPlugFile *module = (ModPlugFile *) internal->decoder_private; | |
| 222 | |
| 223 ModPlug_Unload(module); | |
| 224 } /* MODPLUG_close */ | |
| 225 | |
| 226 | |
| 227 static Uint32 MODPLUG_read(Sound_Sample *sample) | |
| 228 { | |
| 229 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; | |
| 230 ModPlugFile *module = (ModPlugFile *) internal->decoder_private; | |
| 231 int retval; | |
| 232 | |
| 233 retval = ModPlug_Read(module, internal->buffer, internal->buffer_size); | |
| 234 if (retval == 0) | |
| 235 sample->flags |= SOUND_SAMPLEFLAG_EOF; | |
| 236 return(retval); | |
| 237 } /* MODPLUG_read */ | |
| 238 | |
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239 |
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240 static int MODPLUG_rewind(Sound_Sample *sample) |
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241 { |
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242 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; |
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243 ModPlugFile *module = (ModPlugFile *) internal->decoder_private; |
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244 |
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245 ModPlug_Seek(module, 0); |
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246 return(1); |
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247 } /* MODPLUG_rewind */ |
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248 |
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249 |
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250 static int MODPLUG_seek(Sound_Sample *sample, Uint32 ms) |
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251 { |
| 312 | 252 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; |
| 253 ModPlugFile *module = (ModPlugFile *) internal->decoder_private; | |
| 254 | |
| 255 /* Assume that this will work. */ | |
| 256 ModPlug_Seek(module, ms); | |
| 257 return(1); | |
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258 } /* MODPLUG_seek */ |
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259 |
| 208 | 260 #endif /* SOUND_SUPPORTS_MODPLUG */ |
| 261 | |
| 262 | |
| 263 /* end of modplug.c ... */ |