Mercurial > sdl-ios-xcode
annotate src/audio/amigaos/SDL_ahiaudio.c @ 172:37e3ca9254c7
Date: Sat, 8 Sep 2001 04:42:23 +0200
From: Max Horn <max@quendi.de>
Subject: SDL/OSX: Joystick; Better key handling
I just finished implementing improved keyhandling for OS X (in fact
the code should be easily ported to the "normal" MacOS part of SDL, I
just had no chance yet). Works like this:
First init the mapping table statically like before. Them, it queries
the OS for the "official" key table, then iterates over all 127
scancode and gets the associates ascii code. It ignores everythng
below 32 (has to, as it would lead to many problems if we did not...
e.g. both ESC and NUM LOCk produce an ascii code 27 on my keyboard),
and all stuff above 127 is mapped to SDLK_WORLD_* simply in the order
it is encountered.
In addition, caps lock is now working, too.
The code work flawless for me, but since I only have one keyboard, I
may have not encountered some serious problem... but I am pretty
confident that it is better than the old code in most cases.
The joystick driver works fine for me, too. I think it can be added
to CVS already. It would simply be helpful if more people would test
it. Hm, I wonder if Maelstrom or GLTron has Joystick support? That
would be a wonderful test application :)
I also took the liberty of modifying some text files like BUGS,
README.CVS, README.MacOSX (which now contains the OS X docs I long
promised)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 11 Sep 2001 19:00:18 +0000 |
| parents | 75a95f82bc1f |
| children | e8157fcb3114 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 3 Copyright (C) 1997, 1998 Sam Lantinga | |
| 4 | |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 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 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
| 20 5635-34 Springhouse Dr. | |
| 21 Pleasanton, CA 94588 (USA) | |
| 22 slouken@devolution.com | |
| 23 */ | |
| 24 | |
| 25 #ifdef SAVE_RCSID | |
| 26 static char rcsid = | |
| 27 "@(#) $Id$"; | |
| 28 #endif | |
| 29 | |
|
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30 /* Allow access to a raw mixing buffer (for AmigaOS) */ |
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31 |
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32 #include <stdio.h> |
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33 #include <stdlib.h> |
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34 #include <string.h> |
| 0 | 35 |
| 36 #include "SDL_endian.h" | |
| 37 #include "SDL_audio.h" | |
| 38 #include "SDL_audiomem.h" | |
| 39 #include "SDL_audio_c.h" | |
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40 #include "SDL_ahiaudio.h" |
| 0 | 41 |
| 42 /* Audio driver functions */ | |
| 43 static int AHI_OpenAudio(_THIS, SDL_AudioSpec *spec); | |
| 44 static void AHI_WaitAudio(_THIS); | |
| 45 static void AHI_PlayAudio(_THIS); | |
| 46 static Uint8 *AHI_GetAudioBuf(_THIS); | |
| 47 static void AHI_CloseAudio(_THIS); | |
| 48 | |
| 49 #ifndef __SASC | |
| 50 #define mymalloc(x) AllocVec(x,MEMF_PUBLIC) | |
| 51 #define myfree FreeVec | |
| 52 #else | |
| 53 #define mymalloc malloc | |
| 54 #define myfree free | |
| 55 #endif | |
| 56 | |
| 57 /* Audio driver bootstrap functions */ | |
| 58 | |
| 59 static int Audio_Available(void) | |
| 60 { | |
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61 int ok=0; |
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62 struct MsgPort *p; |
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63 struct AHIRequest *req; |
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64 |
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65 if(p=CreateMsgPort()) |
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66 { |
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67 if(req=(struct AHIRequest *)CreateIORequest(p,sizeof(struct AHIRequest))) |
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68 { |
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69 req->ahir_Version=4; |
| 0 | 70 |
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71 if(!OpenDevice(AHINAME,0,(struct IORequest *)req,NULL)) |
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72 { |
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73 D(bug("AHI available.\n")); |
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74 ok=1; |
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75 CloseDevice((struct IORequest *)req); |
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76 } |
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77 DeleteIORequest((struct IORequest *)req); |
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78 } |
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79 DeleteMsgPort(p); |
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80 } |
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81 |
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82 D(if(!ok) bug("AHI not available\n")); |
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83 return ok; |
| 0 | 84 } |
| 85 | |
| 86 static void Audio_DeleteDevice(SDL_AudioDevice *device) | |
| 87 { | |
| 88 free(device->hidden); | |
| 89 free(device); | |
| 90 } | |
| 91 | |
| 92 static SDL_AudioDevice *Audio_CreateDevice(int devindex) | |
| 93 { | |
| 94 SDL_AudioDevice *this; | |
| 95 | |
| 96 #ifndef NO_AMIGADEBUG | |
| 97 D(bug("AHI created...\n")); | |
| 98 #endif | |
| 99 | |
| 100 /* Initialize all variables that we clean on shutdown */ | |
| 101 this = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice)); | |
| 102 if ( this ) { | |
| 103 memset(this, 0, (sizeof *this)); | |
| 104 this->hidden = (struct SDL_PrivateAudioData *) | |
| 105 malloc((sizeof *this->hidden)); | |
| 106 } | |
| 107 if ( (this == NULL) || (this->hidden == NULL) ) { | |
| 108 SDL_OutOfMemory(); | |
| 109 if ( this ) { | |
| 110 free(this); | |
| 111 } | |
| 112 return(0); | |
| 113 } | |
| 114 memset(this->hidden, 0, (sizeof *this->hidden)); | |
| 115 | |
| 116 /* Set the function pointers */ | |
| 117 this->OpenAudio = AHI_OpenAudio; | |
| 118 this->WaitAudio = AHI_WaitAudio; | |
| 119 this->PlayAudio = AHI_PlayAudio; | |
| 120 this->GetAudioBuf = AHI_GetAudioBuf; | |
| 121 this->CloseAudio = AHI_CloseAudio; | |
| 122 | |
| 123 this->free = Audio_DeleteDevice; | |
| 124 | |
| 125 return this; | |
| 126 } | |
| 127 | |
| 128 AudioBootStrap AHI_bootstrap = { | |
| 129 "AHI", Audio_Available, Audio_CreateDevice | |
| 130 }; | |
| 131 | |
| 132 | |
| 133 void static AHI_WaitAudio(_THIS) | |
| 134 { | |
| 135 if(!CheckIO((struct IORequest *)audio_req[current_buffer])) | |
| 136 { | |
| 137 WaitIO((struct IORequest *)audio_req[current_buffer]); | |
| 138 // AbortIO((struct IORequest *)audio_req[current_buffer]); | |
| 139 } | |
| 140 } | |
| 141 | |
| 142 static void AHI_PlayAudio(_THIS) | |
| 143 { | |
| 144 if(playing>1) | |
| 145 WaitIO((struct IORequest *)audio_req[current_buffer]); | |
| 146 | |
| 147 /* Write the audio data out */ | |
| 148 audio_req[current_buffer] -> ahir_Std. io_Message.mn_Node.ln_Pri = 60; | |
| 149 audio_req[current_buffer] -> ahir_Std. io_Data = mixbuf[current_buffer]; | |
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150 audio_req[current_buffer] -> ahir_Std. io_Length = this->hidden->size; |
| 0 | 151 audio_req[current_buffer] -> ahir_Std. io_Offset = 0; |
| 152 audio_req[current_buffer] -> ahir_Std . io_Command = CMD_WRITE; | |
| 153 audio_req[current_buffer] -> ahir_Frequency = this->hidden->freq; | |
| 154 audio_req[current_buffer] -> ahir_Volume = 0x10000; | |
| 155 audio_req[current_buffer] -> ahir_Type = this->hidden->type; | |
| 156 audio_req[current_buffer] -> ahir_Position = 0x8000; | |
| 157 audio_req[current_buffer] -> ahir_Link = (playing>0 ? audio_req[current_buffer^1] : NULL); | |
| 158 | |
| 159 SendIO((struct IORequest *)audio_req[current_buffer]); | |
| 160 current_buffer^=1; | |
| 161 | |
| 162 playing++; | |
| 163 } | |
| 164 | |
| 165 static Uint8 *AHI_GetAudioBuf(_THIS) | |
| 166 { | |
| 167 return(mixbuf[current_buffer]); | |
| 168 } | |
| 169 | |
| 170 static void AHI_CloseAudio(_THIS) | |
| 171 { | |
| 172 D(bug("Closing audio...\n")); | |
| 173 | |
| 174 playing=0; | |
| 175 | |
| 176 if(audio_req[0]) | |
| 177 { | |
| 178 if(audio_req[1]) | |
| 179 { | |
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180 D(bug("Break req[1]...\n")); |
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181 |
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182 AbortIO((struct IORequest *)audio_req[1]); |
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183 WaitIO((struct IORequest *)audio_req[1]); |
| 0 | 184 } |
| 185 | |
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186 D(bug("Break req[0]...\n")); |
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187 |
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188 AbortIO((struct IORequest *)audio_req[0]); |
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189 WaitIO((struct IORequest *)audio_req[0]); |
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190 |
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191 if(audio_req[1]) |
| 0 | 192 { |
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193 D(bug("Break AGAIN req[1]...\n")); |
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194 AbortIO((struct IORequest *)audio_req[1]); |
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195 WaitIO((struct IORequest *)audio_req[1]); |
| 0 | 196 } |
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197 // Double abort to be sure to break the dbuffering process. |
| 0 | 198 |
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199 SDL_Delay(200); |
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200 |
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201 D(bug("Reqs breaked, closing device...\n")); |
| 0 | 202 CloseDevice((struct IORequest *)audio_req[0]); |
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203 D(bug("Device closed, freeing memory...\n")); |
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204 myfree(audio_req[1]); |
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205 D(bug("Memory freed, deleting IOReq...\n")); |
| 0 | 206 DeleteIORequest((struct IORequest *)audio_req[0]); |
| 207 audio_req[0]=audio_req[1]=NULL; | |
| 208 } | |
| 209 | |
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210 D(bug("Freeing mixbuf[0]...\n")); |
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211 if ( mixbuf[0] != NULL ) { |
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212 myfree(mixbuf[0]); |
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213 // SDL_FreeAudioMem(mixbuf[0]); |
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214 mixbuf[0] = NULL; |
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215 } |
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216 |
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217 D(bug("Freeing mixbuf[1]...\n")); |
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218 if ( mixbuf[1] != NULL ) { |
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219 myfree(mixbuf[1]); |
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220 // SDL_FreeAudioMem(mixbuf[1]); |
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221 mixbuf[1] = NULL; |
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222 } |
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223 |
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224 D(bug("Freeing audio_port...\n")); |
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225 |
| 0 | 226 if ( audio_port != NULL ) { |
| 227 DeleteMsgPort(audio_port); | |
| 228 audio_port = NULL; | |
| 229 } | |
| 230 D(bug("...done!\n")); | |
| 231 } | |
| 232 | |
| 233 static int AHI_OpenAudio(_THIS, SDL_AudioSpec *spec) | |
| 234 { | |
| 235 // int width; | |
| 236 | |
| 237 D(bug("AHI opening...\n")); | |
| 238 | |
| 239 /* Determine the audio parameters from the AudioSpec */ | |
| 240 switch ( spec->format & 0xFF ) { | |
| 241 | |
| 242 case 8: { /* Signed 8 bit audio data */ | |
| 243 D(bug("Samples a 8 bit...\n")); | |
| 244 spec->format = AUDIO_S8; | |
| 245 this->hidden->bytespersample=1; | |
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246 if(spec->channels<2) |
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247 this->hidden->type = AHIST_M8S; |
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248 else |
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249 this->hidden->type = AHIST_S8S; |
| 0 | 250 } |
| 251 break; | |
| 252 | |
| 253 case 16: { /* Signed 16 bit audio data */ | |
| 254 D(bug("Samples a 16 bit...\n")); | |
| 255 spec->format = AUDIO_S16MSB; | |
| 256 this->hidden->bytespersample=2; | |
|
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257 if(spec->channels<2) |
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258 this->hidden->type = AHIST_M16S; |
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259 else |
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260 this->hidden->type = AHIST_S16S; |
| 0 | 261 } |
| 262 break; | |
| 263 | |
| 264 default: { | |
| 265 SDL_SetError("Unsupported audio format"); | |
| 266 return(-1); | |
| 267 } | |
| 268 } | |
| 269 | |
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270 if(spec->channels!=1 && spec->channels!=2) |
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271 { |
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272 D(bug("Wrong channel number!\n")); |
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273 SDL_SetError("Channel number non supported"); |
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274 return -1; |
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275 } |
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276 |
| 0 | 277 D(bug("Before CalculateAudioSpec\n")); |
| 278 /* Update the fragment size as size in bytes */ | |
| 279 SDL_CalculateAudioSpec(spec); | |
| 280 | |
| 281 D(bug("Before CreateMsgPort\n")); | |
| 282 | |
| 283 if(!(audio_port=CreateMsgPort())) | |
| 284 { | |
| 285 SDL_SetError("Unable to create a MsgPort"); | |
| 286 return -1; | |
| 287 } | |
| 288 | |
| 289 D(bug("Before CreateIORequest\n")); | |
| 290 | |
| 291 if(!(audio_req[0]=(struct AHIRequest *)CreateIORequest(audio_port,sizeof(struct AHIRequest)))) | |
| 292 { | |
| 293 SDL_SetError("Unable to create an AHIRequest"); | |
| 294 DeleteMsgPort(audio_port); | |
| 295 return -1; | |
| 296 } | |
| 297 | |
| 298 audio_req[0]->ahir_Version = 4; | |
| 299 | |
| 300 if(OpenDevice(AHINAME,0,(struct IORequest *)audio_req[0],NULL)) | |
| 301 { | |
| 302 SDL_SetError("Unable to open AHI device!\n"); | |
| 303 DeleteIORequest((struct IORequest *)audio_req[0]); | |
| 304 DeleteMsgPort(audio_port); | |
| 305 return -1; | |
| 306 } | |
| 307 | |
| 308 D(bug("AFTER opendevice\n")); | |
| 309 | |
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310 /* Set output frequency and size */ |
| 0 | 311 this->hidden->freq = spec->freq; |
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312 this->hidden->size = spec->size; |
| 0 | 313 |
| 314 D(bug("Before buffer allocation\n")); | |
| 315 | |
| 316 /* Allocate mixing buffer */ | |
| 317 mixbuf[0] = (Uint8 *)mymalloc(spec->size); | |
| 318 mixbuf[1] = (Uint8 *)mymalloc(spec->size); | |
| 319 | |
| 320 D(bug("Before audio_req allocation\n")); | |
| 321 | |
| 322 if(!(audio_req[1]=mymalloc(sizeof(struct AHIRequest)))) | |
| 323 { | |
| 324 SDL_OutOfMemory(); | |
| 325 return(-1); | |
| 326 } | |
| 327 | |
| 328 D(bug("Before audio_req memcpy\n")); | |
| 329 | |
| 330 memcpy(audio_req[1],audio_req[0],sizeof(struct AHIRequest)); | |
| 331 | |
| 332 if ( mixbuf[0] == NULL || mixbuf[1] == NULL ) { | |
| 333 SDL_OutOfMemory(); | |
| 334 return(-1); | |
| 335 } | |
| 336 | |
| 337 D(bug("Before mixbuf memset\n")); | |
| 338 | |
| 339 memset(mixbuf[0], spec->silence, spec->size); | |
| 340 memset(mixbuf[1], spec->silence, spec->size); | |
| 341 | |
| 342 current_buffer=0; | |
| 343 playing=0; | |
| 344 | |
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345 D(bug("AHI opened: freq:%ld mixbuf:%lx/%lx buflen:%ld bits:%ld channels:%ld\n",spec->freq,mixbuf[0],mixbuf[1],spec->size,this->hidden->bytespersample*8,spec->channels)); |
| 0 | 346 |
| 347 /* We're ready to rock and roll. :-) */ | |
| 348 return(0); | |
| 349 } |