165 lines
3.8 KiB
C
Executable File
165 lines
3.8 KiB
C
Executable File
/*
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Copyright (C) 1994-1995 Apogee Software, Ltd.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/**********************************************************************
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file: _GUSWAVE.H
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author: James R. Dose
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date: March 23, 1994
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Private header for GUSWAVE.C
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(c) Copyright 1994 James R. Dose. All Rights Reserved.
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**********************************************************************/
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#ifndef ___GUSWAVE_H
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#define ___GUSWAVE_H
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#define TRUE ( 1 == 1 )
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#define FALSE ( !TRUE )
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#define LOADDS _loadds
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#define VOC_8BIT 0x0
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#define VOC_CT4_ADPCM 0x1
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#define VOC_CT3_ADPCM 0x2
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#define VOC_CT2_ADPCM 0x3
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#define VOC_16BIT 0x4
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#define VOC_ALAW 0x6
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#define VOC_MULAW 0x7
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#define VOC_CREATIVE_ADPCM 0x200
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#define MAX_BLOCK_LENGTH 0x8000
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#define GF1BSIZE 896L /* size of buffer per wav on GUS */
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//#define GF1BSIZE 512L /* size of buffer per wav on GUS */
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//#define VOICES 8 /* maximum amount of concurrent wav files */
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#define VOICES 2 /* maximum amount of concurrent wav files */
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#define MAX_VOICES 32 /* This should always be 32 */
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#define MAX_VOLUME 4095
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#define BUFFER 2048U /* size of DMA buffer for patch loading */
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typedef enum
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{
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Raw,
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VOC,
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DemandFeed,
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WAV
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} wavedata;
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typedef enum
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{
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NoMoreData,
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KeepPlaying,
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SoundDone
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} playbackstatus;
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typedef volatile struct VoiceNode
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{
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struct VoiceNode *next;
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struct VoiceNode *prev;
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wavedata wavetype;
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int bits;
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playbackstatus ( *GetSound )( struct VoiceNode *voice );
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int num;
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unsigned long mem; /* location in ultrasound memory */
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int Active; /* this instance in use */
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int GF1voice; /* handle to active voice */
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char *NextBlock;
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char *LoopStart;
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char *LoopEnd;
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unsigned LoopCount;
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unsigned long LoopSize;
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unsigned long BlockLength;
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unsigned long PitchScale;
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unsigned char *sound;
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unsigned long length;
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unsigned long SamplingRate;
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unsigned long RateScale;
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int Playing;
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int handle;
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int priority;
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void ( *DemandFeed )( char **ptr, unsigned long *length );
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unsigned long callbackval;
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int Volume;
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int Pan;
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}
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VoiceNode;
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typedef struct
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{
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VoiceNode *start;
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VoiceNode *end;
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}
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voicelist;
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typedef volatile struct voicestatus
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{
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VoiceNode *Voice;
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int playing;
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}
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voicestatus;
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typedef struct
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{
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char RIFF[ 4 ];
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unsigned long file_size;
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char WAVE[ 4 ];
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char fmt[ 4 ];
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unsigned long format_size;
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} riff_header;
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typedef struct
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{
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unsigned short wFormatTag;
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unsigned short nChannels;
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unsigned long nSamplesPerSec;
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unsigned long nAvgBytesPerSec;
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unsigned short nBlockAlign;
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unsigned short nBitsPerSample;
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} format_header;
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typedef struct
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{
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unsigned char DATA[ 4 ];
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unsigned long size;
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} data_header;
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playbackstatus GUSWAVE_GetNextVOCBlock( VoiceNode *voice );
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VoiceNode *GUSWAVE_GetVoice( int handle );
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int GUSWAVE_Play( VoiceNode *voice, int angle, int volume, int channels );
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VoiceNode *GUSWAVE_AllocVoice( int priority );
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static int GUSWAVE_InitVoices( void );
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#endif
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