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310 lines
8.5 KiB
C
310 lines
8.5 KiB
C
/*
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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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Modifications for JonoF's port by Jonathon Fowler (jonof@edgenetwk.com)
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*/
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/**********************************************************************
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file: _MULTIVC.H
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author: James R. Dose
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date: December 20, 1993
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Private header for MULTIVOC.C
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(c) Copyright 1993 James R. Dose. All Rights Reserved.
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**********************************************************************/
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#ifndef ___MULTIVC_H
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#define ___MULTIVC_H
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#define TRUE ( 1 == 1 )
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#define FALSE ( !TRUE )
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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 T_SIXTEENBIT_STEREO 0
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#define T_8BITS 1
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#define T_MONO 2
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#define T_16BITSOURCE 4
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#define T_LEFTQUIET 8
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#define T_RIGHTQUIET 16
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#define T_DEFAULT T_SIXTEENBIT_STEREO
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#define MV_MaxPanPosition 31
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#define MV_NumPanPositions ( MV_MaxPanPosition + 1 )
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#define MV_MaxTotalVolume 255
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//#define MV_MaxVolume 63
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#define MV_NumVoices 8
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#define MIX_VOLUME( volume ) \
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( ( max( 0, min( ( volume ), 255 ) ) * ( MV_MaxVolume + 1 ) ) >> 8 )
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// ( ( max( 0, min( ( volume ), 255 ) ) ) >> 2 )
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//#define SILENCE_16BIT 0x80008000
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#define SILENCE_16BIT 0
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#define SILENCE_8BIT 0x80808080
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//#define SILENCE_16BIT_PAS 0
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//#define MixBufferSize 256
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#define MixBufferSize (MV_GetBufferSize(MV_RequestedMixRate))
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#define NumberOfBuffers 16
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#define TotalBufferSize ( MixBufferSize * NumberOfBuffers )
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#define PI 3.1415926536
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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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} playbackstatus;
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typedef 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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char bits;
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playbackstatus ( *GetSound )( struct VoiceNode *voice );
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void ( *mix )( unsigned long position, unsigned long rate,
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char *start, unsigned long length );
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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 long FixedPointBufferSize;
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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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unsigned long position;
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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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short *LeftVolume;
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short *RightVolume;
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unsigned long callbackval;
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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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} VList;
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typedef struct
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{
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char left;
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char right;
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} Pan;
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typedef signed short MONO16;
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typedef signed char MONO8;
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typedef struct
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{
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MONO16 left;
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MONO16 right;
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// unsigned short left;
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// unsigned short right;
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} STEREO16;
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typedef struct
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{
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MONO16 left;
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MONO16 right;
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} SIGNEDSTEREO16;
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typedef struct
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{
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// MONO8 left;
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// MONO8 right;
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char left;
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char right;
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} STEREO8;
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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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typedef MONO8 VOLUME8[ 256 ];
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typedef MONO16 VOLUME16[ 256 ];
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typedef char HARSH_CLIP_TABLE_8[ MV_NumVoices * 256 ];
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static unsigned MV_GetBufferSize(unsigned);
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static void MV_Mix( VoiceNode *voice, int buffer );
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static void MV_PlayVoice( VoiceNode *voice );
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static void MV_StopVoice( VoiceNode *voice );
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static int MV_ServiceVoc( int );
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static playbackstatus MV_GetNextVOCBlock( VoiceNode *voice );
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static playbackstatus MV_GetNextDemandFeedBlock( VoiceNode *voice );
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static playbackstatus MV_GetNextRawBlock( VoiceNode *voice );
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static playbackstatus MV_GetNextWAVBlock( VoiceNode *voice );
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static void MV_ServiceRecord( void );
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static VoiceNode *MV_GetVoice( int handle );
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static VoiceNode *MV_AllocVoice( int priority );
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static short *MV_GetVolumeTable( int vol );
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static void MV_SetVoiceMixMode( VoiceNode *voice );
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static void MV_SetVoicePitch( VoiceNode *voice, unsigned long rate, int pitchoffset );
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static void MV_CalcVolume( int MaxLevel );
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static void MV_CalcPanTable( void );
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void ClearBuffer_DW(void *ptr, long data, long length)
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{
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long *pptr = ptr;
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for (; length>0; length--) *(pptr++) = data;
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}
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/*
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#define ClearBuffer_DW( ptr, data, length ) \
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({ void *__ptr=(ptr); unsigned __data=(data); int __length=(length); \
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__asm__ __volatile__ ("rep; stosl" \
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: "+c" (__length), "+D" (__ptr) : "a" (__data) : "memory", "cc"); \
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0; })
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*/
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/*
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#pragma aux ClearBuffer_DW = \
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"cld", \
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"push es", \
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"push ds", \
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"pop es", \
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"rep stosd", \
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"pop es", \
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parm [ edi ] [ eax ] [ ecx ] modify exact [ ecx edi ];
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*/
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#if defined(__WATCOMC__)
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#pragma aux MV_Mix8BitMono parm [eax] [edx] [ebx] [ecx]
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#pragma aux MV_Mix8BitStereo parm [eax] [edx] [ebx] [ecx]
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#pragma aux MV_Mix16BitMono parm [eax] [edx] [ebx] [ecx]
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#pragma aux MV_Mix16BitStereo parm [eax] [edx] [ebx] [ecx]
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#pragma aux MV_Mix16BitMono16 parm [eax] [edx] [ebx] [ecx]
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#pragma aux MV_Mix8BitMono16 parm [eax] [edx] [ebx] [ecx]
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#pragma aux MV_Mix8BitStereo16 parm [eax] [edx] [ebx] [ecx]
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#pragma aux MV_Mix16BitStereo16 parm [eax] [edx] [ebx] [ecx]
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#pragma aux MV_16BitReverb parm [eax] [edx] [ebx] [ecx] modify exact [eax ebx ecx edx esi edi]
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#pragma aux MV_8BitReverb parm [eax] [edx] [ebx] [ecx] modify exact [eax ebx ecx edx esi edi]
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#pragma aux MV_16BitReverbFast parm [eax] [edx] [ebx] [ecx] modify exact [eax ebx ecx edx esi edi]
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#pragma aux MV_8BitReverbFast parm [eax] [edx] [ebx] [ecx] modify exact [eax ebx ecx edx esi edi]
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#define CDEC
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#elif defined(_MSC_VER)
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#define CDEC _cdecl
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#else
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#define CDEC __cdecl
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#endif
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void CDEC MV_Mix8BitMono( unsigned long position, unsigned long rate,
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char *start, unsigned long length );
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void CDEC MV_Mix8BitStereo( unsigned long position,
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unsigned long rate, char *start, unsigned long length );
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void CDEC MV_Mix16BitMono( unsigned long position,
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unsigned long rate, char *start, unsigned long length );
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void CDEC MV_Mix16BitStereo( unsigned long position,
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unsigned long rate, char *start, unsigned long length );
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void CDEC MV_Mix16BitMono16( unsigned long position,
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unsigned long rate, char *start, unsigned long length );
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void CDEC MV_Mix8BitMono16( unsigned long position, unsigned long rate,
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char *start, unsigned long length );
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void CDEC MV_Mix8BitStereo16( unsigned long position,
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unsigned long rate, char *start, unsigned long length );
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void CDEC MV_Mix16BitStereo16( unsigned long position,
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unsigned long rate, char *start, unsigned long length );
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void CDEC MV_16BitReverb( char *src, char *dest, VOLUME16 *volume, int count );
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void CDEC MV_8BitReverb( signed char *src, signed char *dest, VOLUME16 *volume, int count );
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void CDEC MV_16BitReverbFast( char *src, char *dest, int count, int shift );
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void CDEC MV_8BitReverbFast( signed char *src, signed char *dest, int count, int shift );
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#undef CDEC
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#endif
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