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1.1.1.4 ! root 1: /* 1.1 root 2: * UAE - The Un*x Amiga Emulator 1.1.1.4 ! root 3: * 1.1 root 4: * Support for Amiga audio.device sound 1.1.1.4 ! root 5: * 1.1 root 6: * Copyright 1996, 1997 Samuel Devulder 7: */ 8: 9: #include "sysconfig.h" 10: #include "sysdeps.h" 11: 12: #include "config.h" 13: #include "options.h" 14: #include "memory.h" 1.1.1.3 root 15: #include "events.h" 1.1 root 16: #include "custom.h" 17: #include "audio.h" 18: #include "gensound.h" 19: #include "sounddep/sound.h" 20: 21: #include <pDOS/Lock.h> 22: #include <pDOS/Files.h> 23: #include <pDOS/DosSig.h> 24: #include <pDOS/DosErrors.h> 25: #include <pInline/pDos2.h> 26: 27: extern struct pOS_DosBase *gb_DosBase; 28: 29: static struct pOS_MsgPort AudioMP; 30: struct pOS_AudioIO *AudioIO; 31: struct pOS_Std8AudioMap AudioMap; 32: 33: unsigned char *buffers[2]; 34: uae_u16 *sndbuffer; 35: uae_u16 *sndbufpt; 36: int sndbufsize; 37: int bufidx; 38: static int port_created, devopen, channel_allocated; 39: 40: int have_sound; 41: 42: FILE *AUDIO_FILE; 43: 44: static FILE *TST_AUDIO_FILE(char *buff, char *name, int rate, int bsize) 45: { 46: struct pOS_FileLock *lock; 47: 48: if(!name) return 0; 49: sprintf(buff,name,rate,bsize); 50: lock = pOS_LockObject(NULL, buff, FILELKACC_Exclusive|FILELKACC_NoReq); 51: if(lock) { 1.1.1.4 ! root 52: pOS_UnlockObject(lock); ! 53: return fopen(buff,"wb"); 1.1 root 54: } 55: return NULL; 56: } 57: 58: int setup_sound(void) 59: { 60: sound_available = 1; 61: return 1; 62: } 63: 1.1.1.4 ! root 64: int init_sound (void) 1.1 root 65: { 66: int rate; 67: char buff[256],*devname = NULL; 68: 69: atexit(close_sound); /* if only amiga os had resource tracking */ 70: 71: sndbufsize = (currprefs.sound_maxbsiz + 1)&~1; 72: 73: /* check freq */ 74: if (!currprefs.sound_freq) currprefs.sound_freq = 11025; 75: rate = currprefs.sound_freq; 76: 77: /* check for $AUDIONAME or AUD: or AUDIO: device */ 78: devname = buff; 79: AUDIO_FILE = TST_AUDIO_FILE(buff, getenv("AUDIONAME"), 1.1.1.4 ! root 80: rate, sndbufsize); 1.1 root 81: if(!AUDIO_FILE) /* AHI */ 82: AUDIO_FILE = TST_AUDIO_FILE(buff, "AUDIO:FREQUENCY=%d/BUFFER=%d", 1.1.1.4 ! root 83: rate, sndbufsize); 1.1 root 84: if(!AUDIO_FILE) /* AUD: */ 85: AUDIO_FILE = TST_AUDIO_FILE(buff, "AUDIO:FREQUENCY%d/BUFFER%d", 1.1.1.4 ! root 86: rate, sndbufsize); 1.1 root 87: if(!AUDIO_FILE) 88: AUDIO_FILE = TST_AUDIO_FILE(buff, "AUD:FREQUENCY%d/BUFFER%d", 1.1.1.4 ! root 89: rate, sndbufsize); 1.1 root 90: 91: /* else use audio.device */ 92: if(!AUDIO_FILE) { 1.1.1.4 ! root 93: if(!pOS_ConstructMsgPort(&AudioMP)) goto fail; ! 94: port_created = 1; ! 95: AudioIO = (void*)pOS_CreateIORequest(&AudioMP, ! 96: sizeof(struct pOS_AudioIO)); ! 97: if(!AudioIO) goto fail; ! 98: ! 99: if(pOS_OpenDevice(devname = "pAudio.device", 0, (void*)AudioIO, 0,0)) ! 100: goto fail; ! 101: devopen = 1; ! 102: ! 103: AudioIO->aio_Command = AUDIOCMD_AllocChannel; ! 104: AudioIO->aio_U.aio_AllocCh.alio_Tags = NULL; ! 105: if(pOS_DoIO((struct pOS_IORequest*)AudioIO)) goto fail; ! 106: channel_allocated = 1; 1.1 root 107: } 108: 109: /* get the buffers */ 110: if(AUDIO_FILE) { 1.1.1.4 ! root 111: buffers[0] = malloc(sndbufsize); ! 112: buffers[1] = NULL; ! 113: if(!buffers[0]) goto fail; 1.1 root 114: } else { 1.1.1.4 ! root 115: buffers[0] = malloc(sndbufsize); ! 116: buffers[1] = malloc(sndbufsize); ! 117: if(!buffers[0] || !buffers[1]) goto fail; 1.1 root 118: } 119: bufidx = 0; 120: sndbuffer = sndbufpt = (uae_u16*)buffers[bufidx]; 121: 122: AudioIO->aio_U.aio_Map.amio_AudioMap = (struct pOS_AudioMap*)&AudioMap; 123: AudioMap.bam_Audio.am_Type = AUDIOMAPTYP_Std8Bit; 124: AudioMap.bam_Audio.am_Frequency = rate; 125: AudioMap.bam_Length = sndbufsize; 126: AudioMap.bam_Sample = (void*)sndbuffer; 127: 1.1.1.3 root 128: scaled_sample_evtime = (unsigned long)maxhpos * maxvpos * vblank_hz * CYCLE_UNIT / rate; 129: scaled_sample_evtime_ok = 1; 130: 1.1 root 131: init_sound_table8 (); 1.1.1.2 root 132: sample_handler = sample8_handler; 1.1 root 133: 134: fprintf(stderr, "Sound driver found and configured for %d bits " 1.1.1.4 ! root 135: "at %d Hz, buffer is %d bytes (%s)\n", ! 136: 8, rate, sndbufsize,devname); 1.1 root 137: 138: sound_available = 1; 139: return 1; 140: fail: 141: sound_available = 0; 142: return 0; 143: } 144: 145: void close_sound(void) 146: { 147: if(AUDIO_FILE) { 1.1.1.4 ! root 148: fclose(AUDIO_FILE); ! 149: AUDIO_FILE = NULL; 1.1 root 150: } 151: if(channel_allocated) { 1.1.1.4 ! root 152: AudioIO->aio_Command = AUDIOCMD_FreeChannel; ! 153: pOS_DoIO((struct pOS_IORequest*)AudioIO); ! 154: channel_allocated = 0; 1.1 root 155: } 156: if(devopen) { 1.1.1.4 ! root 157: pOS_CloseDevice((void*)AudioIO); ! 158: devopen = 0; 1.1 root 159: } 160: if(AudioIO) { 1.1.1.4 ! root 161: pOS_DeleteIORequest((void*)AudioIO); ! 162: AudioIO = NULL; 1.1 root 163: } 164: if(port_created) { 1.1.1.4 ! root 165: pOS_DestructMsgPort(&AudioMP); ! 166: port_created = 0; 1.1 root 167: } 168: if(buffers[0]) {free(buffers[0]);buffers[0] = 0;} 169: if(buffers[1]) {free(buffers[1]);buffers[1] = 0;} 170: }
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