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rockbox/apps/plugins/mikmod/mikmod_internals.h
Frank Gevaerts 26f2bfde03 Add MikMod plugin, ported by Jason Yu, with some minor work by Craig Mann and William Peters (FS#8806) 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28810 a1c6a512-1295-4272-9138-f99709370657
2010-12-12 15:03:30 +00:00

806 lines
26 KiB
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/* MikMod sound library
(c) 1998, 1999, 2005 Miodrag Vallat and others - see file AUTHORS for
complete list.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.
*/
/*==============================================================================
$Id: mikmod_internals.h,v 1.7 2010/01/12 03:30:31 realtech Exp $
MikMod sound library internal definitions
==============================================================================*/
#ifndef _MIKMOD_INTERNALS_H
#define _MIKMOD_INTERNALS_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stdarg.h>
#if 0
#if defined(__OS2__)||defined(__EMX__)||defined(WIN32)
#define strcasecmp(s,t) stricmp(s,t)
#endif
#endif
#include "mikmod.h"
/*========== More type definitions */
/* SLONGLONG: 64bit, signed */
#if defined (__arch64__) || defined(__alpha) || defined (__x64_64) || defined (_LP64) || defined (__powerpc64__)
typedef long SLONGLONG;
#define NATIVE_64BIT_INT
#if 0
#elif defined(__WATCOMC__)
typedef __int64 SLONGLONG;
#elif defined(WIN32) && !defined(__MWERKS__)
typedef LONGLONG SLONGLONG;
#elif macintosh && !TYPE_LONGLONG
#include <Types.h>
typedef SInt64 SLONGLONG;
#endif
#else
typedef long long SLONGLONG;
#endif
/*========== Error handling */
#define _mm_errno MikMod_errno
#define _mm_critical MikMod_critical
extern MikMod_handler_t _mm_errorhandler;
/*========== MT stuff */
#ifdef HAVE_PTHREAD
#include <pthread.h>
#define DECLARE_MUTEX(name) \
extern pthread_mutex_t _mm_mutex_##name
#define MUTEX_LOCK(name) \
pthread_mutex_lock(&_mm_mutex_##name)
#define MUTEX_UNLOCK(name) \
pthread_mutex_unlock(&_mm_mutex_##name)
#elif defined(__OS2__)||defined(__EMX__)
#define DECLARE_MUTEX(name) \
extern HMTX _mm_mutex_##name
#define MUTEX_LOCK(name) \
if(_mm_mutex_##name) \
DosRequestMutexSem(_mm_mutex_##name,SEM_INDEFINITE_WAIT)
#define MUTEX_UNLOCK(name) \
if(_mm_mutex_##name) \
DosReleaseMutexSem(_mm_mutex_##name)
#elif defined(WIN32)
#include <windows.h>
#define DECLARE_MUTEX(name) \
extern HANDLE _mm_mutex_##name
#define MUTEX_LOCK(name) \
if(_mm_mutex_##name) \
WaitForSingleObject(_mm_mutex_##name,INFINITE)
#define MUTEX_UNLOCK(name) \
if(_mm_mutex_##name) \
ReleaseMutex(_mm_mutex_##name)
#else
#define DECLARE_MUTEX(name) \
extern void *_mm_mutex_##name
#define MUTEX_LOCK(name)
#define MUTEX_UNLOCK(name)
#endif
DECLARE_MUTEX(lists);
DECLARE_MUTEX(vars);
/*========== Portable file I/O */
extern MREADER* _mm_new_mem_reader(const void *buffer, int len);
extern void _mm_delete_mem_reader(MREADER *reader);
extern MREADER* _mm_new_file_reader(int fp);
extern void _mm_delete_file_reader(MREADER*);
extern MWRITER* _mm_new_file_writer(int fp);
extern void _mm_delete_file_writer(MWRITER*);
extern int _mm_FileExists(CHAR *fname);
#define _mm_write_SBYTE(x,y) y->Put(y,(int)x)
#define _mm_write_UBYTE(x,y) y->Put(y,(int)x)
#define _mm_read_SBYTE(x) (SBYTE)x->Get(x)
#define _mm_read_UBYTE(x) (UBYTE)x->Get(x)
#define _mm_write_SBYTES(x,y,z) z->Write(z,(void *)x,y)
#define _mm_write_UBYTES(x,y,z) z->Write(z,(void *)x,y)
#define _mm_read_SBYTES(x,y,z) z->Read(z,(void *)x,y)
#define _mm_read_UBYTES(x,y,z) z->Read(z,(void *)x,y)
#define _mm_fseek(x,y,z) x->Seek(x,y,z)
#define _mm_ftell(x) x->Tell(x)
#define _mm_rewind(x) _mm_fseek(x,0,SEEK_SET)
#define _mm_eof(x) x->Eof(x)
extern void _mm_iobase_setcur(MREADER*);
extern void _mm_iobase_revert(MREADER*);
extern int _mm_fopen(CHAR*,CHAR*);
extern int _mm_fclose(int);
extern void _mm_write_string(CHAR*,MWRITER*);
extern int _mm_read_string (CHAR*,int,MREADER*);
extern SWORD _mm_read_M_SWORD(MREADER*);
extern SWORD _mm_read_I_SWORD(MREADER*);
extern UWORD _mm_read_M_UWORD(MREADER*);
extern UWORD _mm_read_I_UWORD(MREADER*);
extern SLONG _mm_read_M_SLONG(MREADER*);
extern SLONG _mm_read_I_SLONG(MREADER*);
extern ULONG _mm_read_M_ULONG(MREADER*);
extern ULONG _mm_read_I_ULONG(MREADER*);
extern int _mm_read_M_SWORDS(SWORD*,int,MREADER*);
extern int _mm_read_I_SWORDS(SWORD*,int,MREADER*);
extern int _mm_read_M_UWORDS(UWORD*,int,MREADER*);
extern int _mm_read_I_UWORDS(UWORD*,int,MREADER*);
extern int _mm_read_M_SLONGS(SLONG*,int,MREADER*);
extern int _mm_read_I_SLONGS(SLONG*,int,MREADER*);
extern int _mm_read_M_ULONGS(ULONG*,int,MREADER*);
extern int _mm_read_I_ULONGS(ULONG*,int,MREADER*);
extern void _mm_write_M_SWORD(SWORD,MWRITER*);
extern void _mm_write_I_SWORD(SWORD,MWRITER*);
extern void _mm_write_M_UWORD(UWORD,MWRITER*);
extern void _mm_write_I_UWORD(UWORD,MWRITER*);
extern void _mm_write_M_SLONG(SLONG,MWRITER*);
extern void _mm_write_I_SLONG(SLONG,MWRITER*);
extern void _mm_write_M_ULONG(ULONG,MWRITER*);
extern void _mm_write_I_ULONG(ULONG,MWRITER*);
extern void _mm_write_M_SWORDS(SWORD*,int,MWRITER*);
extern void _mm_write_I_SWORDS(SWORD*,int,MWRITER*);
extern void _mm_write_M_UWORDS(UWORD*,int,MWRITER*);
extern void _mm_write_I_UWORDS(UWORD*,int,MWRITER*);
extern void _mm_write_M_SLONGS(SLONG*,int,MWRITER*);
extern void _mm_write_I_SLONGS(SLONG*,int,MWRITER*);
extern void _mm_write_M_ULONGS(ULONG*,int,MWRITER*);
extern void _mm_write_I_ULONGS(ULONG*,int,MWRITER*);
/*========== Samples */
/* This is a handle of sorts attached to any sample registered with
SL_RegisterSample. Generally, this only need be used or changed by the
loaders and drivers of mikmod. */
typedef struct SAMPLOAD {
struct SAMPLOAD *next;
ULONG length; /* length of sample (in samples!) */
ULONG loopstart; /* repeat position (relative to start, in samples) */
ULONG loopend; /* repeat end */
UWORD infmt,outfmt;
int scalefactor;
SAMPLE* sample;
MREADER* reader;
} SAMPLOAD;
/*========== Sample and waves loading interface */
extern void SL_HalveSample(SAMPLOAD*,int);
extern void SL_Sample8to16(SAMPLOAD*);
extern void SL_Sample16to8(SAMPLOAD*);
extern void SL_SampleSigned(SAMPLOAD*);
extern void SL_SampleUnsigned(SAMPLOAD*);
extern int SL_LoadSamples(void);
extern SAMPLOAD* SL_RegisterSample(SAMPLE*,int,MREADER*);
extern int SL_Load(void*,SAMPLOAD*,ULONG);
extern int SL_Init(SAMPLOAD*);
extern void SL_Exit(SAMPLOAD*);
/*========== Internal module representation (UniMod) interface */
/* number of notes in an octave */
#define OCTAVE 12
extern void UniSetRow(UBYTE*);
extern UBYTE UniGetByte(void);
extern UWORD UniGetWord(void);
extern UBYTE* UniFindRow(UBYTE*,UWORD);
extern void UniSkipOpcode(void);
extern void UniReset(void);
extern void UniWriteByte(UBYTE);
extern void UniWriteWord(UWORD);
extern void UniNewline(void);
extern UBYTE* UniDup(void);
extern int UniInit(void);
extern void UniCleanup(void);
extern void UniEffect(UWORD,UWORD);
#define UniInstrument(x) UniEffect(UNI_INSTRUMENT,x)
#define UniNote(x) UniEffect(UNI_NOTE,x)
extern void UniPTEffect(UBYTE,UBYTE);
extern void UniVolEffect(UWORD,UBYTE);
/*========== Module Commands */
enum {
/* Simple note */
UNI_NOTE = 1,
/* Instrument change */
UNI_INSTRUMENT,
/* Protracker effects */
UNI_PTEFFECT0, /* arpeggio */
UNI_PTEFFECT1, /* porta up */
UNI_PTEFFECT2, /* porta down */
UNI_PTEFFECT3, /* porta to note */
UNI_PTEFFECT4, /* vibrato */
UNI_PTEFFECT5, /* dual effect 3+A */
UNI_PTEFFECT6, /* dual effect 4+A */
UNI_PTEFFECT7, /* tremolo */
UNI_PTEFFECT8, /* pan */
UNI_PTEFFECT9, /* sample offset */
UNI_PTEFFECTA, /* volume slide */
UNI_PTEFFECTB, /* pattern jump */
UNI_PTEFFECTC, /* set volume */
UNI_PTEFFECTD, /* pattern break */
UNI_PTEFFECTE, /* extended effects */
UNI_PTEFFECTF, /* set speed */
/* Scream Tracker effects */
UNI_S3MEFFECTA, /* set speed */
UNI_S3MEFFECTD, /* volume slide */
UNI_S3MEFFECTE, /* porta down */
UNI_S3MEFFECTF, /* porta up */
UNI_S3MEFFECTI, /* tremor */
UNI_S3MEFFECTQ, /* retrig */
UNI_S3MEFFECTR, /* tremolo */
UNI_S3MEFFECTT, /* set tempo */
UNI_S3MEFFECTU, /* fine vibrato */
UNI_KEYOFF, /* note off */
/* Fast Tracker effects */
UNI_KEYFADE, /* note fade */
UNI_VOLEFFECTS, /* volume column effects */
UNI_XMEFFECT4, /* vibrato */
UNI_XMEFFECT6, /* dual effect 4+A */
UNI_XMEFFECTA, /* volume slide */
UNI_XMEFFECTE1, /* fine porta up */
UNI_XMEFFECTE2, /* fine porta down */
UNI_XMEFFECTEA, /* fine volume slide up */
UNI_XMEFFECTEB, /* fine volume slide down */
UNI_XMEFFECTG, /* set global volume */
UNI_XMEFFECTH, /* global volume slide */
UNI_XMEFFECTL, /* set envelope position */
UNI_XMEFFECTP, /* pan slide */
UNI_XMEFFECTX1, /* extra fine porta up */
UNI_XMEFFECTX2, /* extra fine porta down */
/* Impulse Tracker effects */
UNI_ITEFFECTG, /* porta to note */
UNI_ITEFFECTH, /* vibrato */
UNI_ITEFFECTI, /* tremor (xy not incremented) */
UNI_ITEFFECTM, /* set channel volume */
UNI_ITEFFECTN, /* slide / fineslide channel volume */
UNI_ITEFFECTP, /* slide / fineslide channel panning */
UNI_ITEFFECTT, /* slide tempo */
UNI_ITEFFECTU, /* fine vibrato */
UNI_ITEFFECTW, /* slide / fineslide global volume */
UNI_ITEFFECTY, /* panbrello */
UNI_ITEFFECTZ, /* resonant filters */
UNI_ITEFFECTS0,
/* UltraTracker effects */
UNI_ULTEFFECT9, /* Sample fine offset */
/* OctaMED effects */
UNI_MEDSPEED,
UNI_MEDEFFECTF1, /* play note twice */
UNI_MEDEFFECTF2, /* delay note */
UNI_MEDEFFECTF3, /* play note three times */
/* Oktalyzer effects */
UNI_OKTARP, /* arpeggio */
UNI_LAST
};
extern UWORD unioperands[UNI_LAST];
/* IT / S3M Extended SS effects: */
enum {
SS_GLISSANDO = 1,
SS_FINETUNE,
SS_VIBWAVE,
SS_TREMWAVE,
SS_PANWAVE,
SS_FRAMEDELAY,
SS_S7EFFECTS,
SS_PANNING,
SS_SURROUND,
SS_HIOFFSET,
SS_PATLOOP,
SS_NOTECUT,
SS_NOTEDELAY,
SS_PATDELAY
};
/* IT Volume column effects */
enum {
VOL_VOLUME = 1,
VOL_PANNING,
VOL_VOLSLIDE,
VOL_PITCHSLIDEDN,
VOL_PITCHSLIDEUP,
VOL_PORTAMENTO,
VOL_VIBRATO
};
/* IT resonant filter information */
#define UF_MAXMACRO 0x10
#define UF_MAXFILTER 0x100
#define FILT_CUT 0x80
#define FILT_RESONANT 0x81
typedef struct FILTER {
UBYTE filter,inf;
} FILTER;
/*========== Instruments */
/* Instrument format flags */
#define IF_OWNPAN 1
#define IF_PITCHPAN 2
/* Envelope flags: */
#define EF_ON 1
#define EF_SUSTAIN 2
#define EF_LOOP 4
#define EF_VOLENV 8
/* New Note Action Flags */
#define NNA_CUT 0
#define NNA_CONTINUE 1
#define NNA_OFF 2
#define NNA_FADE 3
#define NNA_MASK 3
#define DCT_OFF 0
#define DCT_NOTE 1
#define DCT_SAMPLE 2
#define DCT_INST 3
#define DCA_CUT 0
#define DCA_OFF 1
#define DCA_FADE 2
#define KEY_KICK 0
#define KEY_OFF 1
#define KEY_FADE 2
#define KEY_KILL (KEY_OFF|KEY_FADE)
#define KICK_ABSENT 0
#define KICK_NOTE 1
#define KICK_KEYOFF 2
#define KICK_ENV 4
#define AV_IT 1 /* IT vs. XM vibrato info */
/*========== Playing */
#define POS_NONE (-2) /* no loop position defined */
#define LAST_PATTERN (UWORD)(-1) /* special ``end of song'' pattern */
typedef struct ENVPR {
UBYTE flg; /* envelope flag */
UBYTE pts; /* number of envelope points */
UBYTE susbeg; /* envelope sustain index begin */
UBYTE susend; /* envelope sustain index end */
UBYTE beg; /* envelope loop begin */
UBYTE end; /* envelope loop end */
SWORD p; /* current envelope counter */
UWORD a; /* envelope index a */
UWORD b; /* envelope index b */
ENVPT* env; /* envelope points */
} ENVPR;
typedef struct MP_CHANNEL {
INSTRUMENT* i;
SAMPLE* s;
UBYTE sample; /* which sample number */
UBYTE note; /* the audible note as heard, direct rep of period */
SWORD outvolume; /* output volume (vol + sampcol + instvol) */
SBYTE chanvol; /* channel's "global" volume */
UWORD fadevol; /* fading volume rate */
SWORD panning; /* panning position */
UBYTE kick; /* if true = sample has to be restarted */
UBYTE kick_flag; /* kick has been true */
UWORD period; /* period to play the sample at */
UBYTE nna; /* New note action type + master/slave flags */
UBYTE volflg; /* volume envelope settings */
UBYTE panflg; /* panning envelope settings */
UBYTE pitflg; /* pitch envelope settings */
UBYTE keyoff; /* if true = fade out and stuff */
SWORD handle; /* which sample-handle */
UBYTE notedelay; /* (used for note delay) */
SLONG start; /* The starting byte index in the sample */
} MP_CHANNEL;
typedef struct MP_CONTROL {
struct MP_CHANNEL main;
struct MP_VOICE *slave; /* Audio Slave of current effects control channel */
UBYTE slavechn; /* Audio Slave of current effects control channel */
UBYTE muted; /* if set, channel not played */
UWORD ultoffset; /* fine sample offset memory */
UBYTE anote; /* the note that indexes the audible */
UBYTE oldnote;
SWORD ownper;
SWORD ownvol;
UBYTE dca; /* duplicate check action */
UBYTE dct; /* duplicate check type */
UBYTE* row; /* row currently playing on this channel */
SBYTE retrig; /* retrig value (0 means don't retrig) */
ULONG speed; /* what finetune to use */
SWORD volume; /* amiga volume (0 t/m 64) to play the sample at */
SWORD tmpvolume; /* tmp volume */
UWORD tmpperiod; /* tmp period */
UWORD wantedperiod; /* period to slide to (with effect 3 or 5) */
UBYTE arpmem; /* arpeggio command memory */
UBYTE pansspd; /* panslide speed */
UWORD slidespeed;
UWORD portspeed; /* noteslide speed (toneportamento) */
UBYTE s3mtremor; /* s3m tremor (effect I) counter */
UBYTE s3mtronof; /* s3m tremor ontime/offtime */
UBYTE s3mvolslide; /* last used volslide */
SBYTE sliding;
UBYTE s3mrtgspeed; /* last used retrig speed */
UBYTE s3mrtgslide; /* last used retrig slide */
UBYTE glissando; /* glissando (0 means off) */
UBYTE wavecontrol;
SBYTE vibpos; /* current vibrato position */
UBYTE vibspd; /* "" speed */
UBYTE vibdepth; /* "" depth */
SBYTE trmpos; /* current tremolo position */
UBYTE trmspd; /* "" speed */
UBYTE trmdepth; /* "" depth */
UBYTE fslideupspd;
UBYTE fslidednspd;
UBYTE fportupspd; /* fx E1 (extra fine portamento up) data */
UBYTE fportdnspd; /* fx E2 (extra fine portamento dn) data */
UBYTE ffportupspd; /* fx X1 (extra fine portamento up) data */
UBYTE ffportdnspd; /* fx X2 (extra fine portamento dn) data */
ULONG hioffset; /* last used high order of sample offset */
UWORD soffset; /* last used low order of sample-offset (effect 9) */
UBYTE sseffect; /* last used Sxx effect */
UBYTE ssdata; /* last used Sxx data info */
UBYTE chanvolslide; /* last used channel volume slide */
UBYTE panbwave; /* current panbrello waveform */
UBYTE panbpos; /* current panbrello position */
SBYTE panbspd; /* "" speed */
UBYTE panbdepth; /* "" depth */
UWORD newsamp; /* set to 1 upon a sample / inst change */
UBYTE voleffect; /* Volume Column Effect Memory as used by IT */
UBYTE voldata; /* Volume Column Data Memory */
SWORD pat_reppos; /* patternloop position */
UWORD pat_repcnt; /* times to loop */
} MP_CONTROL;
/* Used by NNA only player (audio control. AUDTMP is used for full effects
control). */
typedef struct MP_VOICE {
struct MP_CHANNEL main;
ENVPR venv;
ENVPR penv;
ENVPR cenv;
UWORD avibpos; /* autovibrato pos */
UWORD aswppos; /* autovibrato sweep pos */
ULONG totalvol; /* total volume of channel (before global mixings) */
int mflag;
SWORD masterchn;
UWORD masterperiod;
MP_CONTROL* master; /* index of "master" effects channel */
} MP_VOICE;
/*========== Loaders */
typedef struct MLOADER {
struct MLOADER* next;
CHAR* type;
CHAR* version;
int (*Init)(void);
int (*Test)(void);
int (*Load)(int);
void (*Cleanup)(void);
CHAR* (*LoadTitle)(void);
} MLOADER;
/* internal loader variables */
extern MREADER* modreader;
extern UWORD finetune[16];
extern MODULE of; /* static unimod loading space */
extern UWORD npertab[7*OCTAVE]; /* used by the original MOD loaders */
extern SBYTE remap[UF_MAXCHAN]; /* for removing empty channels */
extern UBYTE* poslookup; /* lookup table for pattern jumps after
blank pattern removal */
extern UWORD poslookupcnt;
extern UWORD* origpositions;
extern int filters; /* resonant filters in use */
extern UBYTE activemacro; /* active midi macro number for Sxx */
extern UBYTE filtermacros[UF_MAXMACRO]; /* midi macro settings */
extern FILTER filtersettings[UF_MAXFILTER]; /* computed filter settings */
extern int* noteindex;
/*========== Internal loader interface */
extern int ReadComment(UWORD);
extern int ReadLinedComment(UWORD,UWORD);
extern int AllocPositions(int);
extern int AllocPatterns(void);
extern int AllocTracks(void);
extern int AllocInstruments(void);
extern int AllocSamples(void);
extern CHAR* DupStr(CHAR*,UWORD,int);
extern CHAR* StrDup(CHAR *s);
/* loader utility functions */
extern int* AllocLinear(void);
extern void FreeLinear(void);
extern int speed_to_finetune(ULONG,int);
extern void S3MIT_ProcessCmd(UBYTE,UBYTE,unsigned int);
extern void S3MIT_CreateOrders(int);
/* flags for S3MIT_ProcessCmd */
#define S3MIT_OLDSTYLE 1 /* behave as old scream tracker */
#define S3MIT_IT 2 /* behave as impulse tracker */
#define S3MIT_SCREAM 4 /* enforce scream tracker specific limits */
/* used to convert c4spd to linear XM periods (IT and IMF loaders). */
extern UWORD getlinearperiod(UWORD,ULONG);
extern ULONG getfrequency(UWORD,ULONG);
/* loader shared data */
#define STM_NTRACKERS 3
extern CHAR *STM_Signatures[STM_NTRACKERS];
/*========== Player interface */
extern int Player_Init(MODULE*);
extern void Player_Exit(MODULE*);
extern void Player_HandleTick(void);
/*========== Drivers */
/* max. number of handles a driver has to provide. (not strict) */
#define MAXSAMPLEHANDLES 384
/* These variables can be changed at ANY time and results will be immediate */
extern UWORD md_bpm; /* current song / hardware BPM rate */
/* Variables below can be changed via MD_SetNumVoices at any time. However, a
call to MD_SetNumVoicess while the driver is active will cause the sound to
skip slightly. */
extern UBYTE md_numchn; /* number of song + sound effects voices */
extern UBYTE md_sngchn; /* number of song voices */
extern UBYTE md_sfxchn; /* number of sound effects voices */
extern UBYTE md_hardchn; /* number of hardware mixed voices */
extern UBYTE md_softchn; /* number of software mixed voices */
/* This is for use by the hardware drivers only. It points to the registered
tickhandler function. */
extern void (*md_player)(void);
extern SWORD MD_SampleLoad(SAMPLOAD*,int);
extern void MD_SampleUnload(SWORD);
extern ULONG MD_SampleSpace(int);
extern ULONG MD_SampleLength(int,SAMPLE*);
/* uLaw conversion */
extern void unsignedtoulaw(char *,int);
/* Parameter extraction helper */
extern CHAR *MD_GetAtom(CHAR*,CHAR*,int);
/* Internal software mixer stuff */
extern void VC_SetupPointers(void);
extern int VC1_Init(void);
extern int VC2_Init(void);
#if defined(unix) || defined(__APPLE__) && defined(__MACH__)
/* POSIX helper functions */
extern int MD_Access(CHAR *);
extern int MD_DropPrivileges(void);
#endif
/* Macro to define a missing driver, yet allowing binaries to dynamically link
with the library without missing symbol errors */
#define MISSING(a) MDRIVER a = { NULL, NULL, NULL, 0, 0 }
/*========== Prototypes for non-MT safe versions of some public functions */
extern void _mm_registerdriver(struct MDRIVER*);
extern void _mm_registerloader(struct MLOADER*);
extern int MikMod_Active_internal(void);
extern void MikMod_DisableOutput_internal(void);
extern int MikMod_EnableOutput_internal(void);
extern void MikMod_Exit_internal(void);
extern int MikMod_SetNumVoices_internal(int,int);
extern void Player_Exit_internal(MODULE*);
extern void Player_Stop_internal(void);
extern int Player_Paused_internal(void);
extern void Sample_Free_internal(SAMPLE*);
extern void Voice_Play_internal(SBYTE,SAMPLE*,ULONG);
extern void Voice_SetFrequency_internal(SBYTE,ULONG);
extern void Voice_SetPanning_internal(SBYTE,ULONG);
extern void Voice_SetVolume_internal(SBYTE,UWORD);
extern void Voice_Stop_internal(SBYTE);
extern int Voice_Stopped_internal(SBYTE);
#ifdef __cplusplus
}
#endif
/*========== SIMD mixing routines */
#undef HAVE_ALTIVEC
#undef HAVE_SSE2
#if defined(__APPLE__) && !defined (__i386__)
#if defined __VEC__ && !(defined(__GNUC__) && (__GNUC__ < 3))
#define HAVE_ALTIVEC
#endif // __VEC__
#elif defined WIN32 || defined __WIN64 || (defined __APPLE__ && defined (__i386__) && defined __VEC__)
// FIXME: emmintrin.h requires VC6 processor pack or VC2003+
#define HAVE_SSE2
/* Fixes couples warnings */
#ifdef _MSC_VER
#pragma warning(disable:4761)
#pragma warning(disable:4391)
#pragma warning(disable:4244)
#endif
#endif
// TODO: Test for GCC Linux
/*========== SIMD mixing helper functions =============*/
#define IS_ALIGNED_16(ptr) (!(((int)(ptr)) & 15))
/* Altivec helper function */
#if defined HAVE_ALTIVEC
#define simd_m128i vector signed int
#define simd_m128 vector float
#ifdef __GNUC__
#include <ppc_intrinsics.h>
#endif
// Helper functions
// Set single float across the four values
static inline vector float vec_mul( const vector float a, const vector float b)
{
return vec_madd(a, b, (const vector float)(0.f));
}
// Set single float across the four values
static inline vector float vec_load_ps1(const float *pF )
{
vector float data = vec_lde(0, pF);
return vec_splat(vec_perm(data, data, vec_lvsl(0, pF)), 0);
}
// Set vector to 0
static inline const vector float vec_setzero()
{
return (const vector float) (0.);
}
static inline vector signed char vec_set1_8(unsigned char splatchar)
{
vector unsigned char splatmap = vec_lvsl(0, &splatchar);
vector unsigned char result = vec_lde(0, &splatchar);
splatmap = vec_splat(splatmap, 0);
return (vector signed char)vec_perm(result, result, splatmap);
}
#define PERM_A0 0x00,0x01,0x02,0x03
#define PERM_A1 0x04,0x05,0x06,0x07
#define PERM_A2 0x08,0x09,0x0A,0x0B
#define PERM_A3 0x0C,0x0D,0x0E,0x0F
#define PERM_B0 0x10,0x11,0x12,0x13
#define PERM_B1 0x14,0x15,0x16,0x17
#define PERM_B2 0x18,0x19,0x1A,0x1B
#define PERM_B3 0x1C,0x1D,0x1E,0x1F
// Equivalent to _mm_unpacklo_epi32
static inline vector signed int vec_unpacklo(vector signed int a, vector signed int b)
{
return vec_perm(a, b, (vector unsigned char)(PERM_A0,PERM_A1,PERM_B0,PERM_B1));
}
// Equivalent to _mm_srli_si128(a, 8) (without the zeroing in high part).
static inline vector signed int vec_hiqq(vector signed int a)
{
vector signed int b = vec_splat_s32(0);
return vec_perm(a, b, (vector unsigned char)(PERM_A2,PERM_A3,PERM_B2,PERM_B3));
}
// vec_sra is max +15. We have to do in two times ...
#define EXTRACT_SAMPLE_SIMD_F(srce, var, size, mul) var = vec_mul(vec_ctf(vec_sra(vec_ld(0, (vector signed int*)(srce)), vec_splat_u32(BITSHIFT-size)),0), mul);
#define EXTRACT_SAMPLE_SIMD_0(srce, var) var = vec_sra(vec_sra(vec_ld(0, (vector signed int*)(srce)), vec_splat_u32(15)), vec_splat_u32(BITSHIFT+16-15-0));
#define EXTRACT_SAMPLE_SIMD_8(srce, var) var = vec_sra(vec_sra(vec_ld(0, (vector signed int*)(srce)), vec_splat_u32(15)), vec_splat_u32(BITSHIFT+16-15-8));
#define EXTRACT_SAMPLE_SIMD_16(srce, var) var = vec_sra(vec_ld(0, (vector signed int*)(srce)), vec_splat_u32(BITSHIFT+16-16));
#define PUT_SAMPLE_SIMD_W(dste, v1, v2) vec_st(vec_packs(v1, v2), 0, dste);
#define PUT_SAMPLE_SIMD_B(dste, v1, v2, v3, v4) vec_st(vec_add(vec_packs((vector signed short)vec_packs(v1, v2), (vector signed short)vec_packs(v3, v4)), vec_set1_8(128)), 0, dste);
#define PUT_SAMPLE_SIMD_F(dste, v1) vec_st(v1, 0, dste);
#define LOAD_PS1_SIMD(ptr) vec_load_ps1(ptr)
#elif defined HAVE_SSE2
/* SSE2 helper function */
#include <emmintrin.h>
static __inline __m128i mm_hiqq(const __m128i a)
{
return _mm_srli_si128(a, 8); // get the 64bit upper part. new 64bit upper is undefined (zeroed is fine).
}
/* 128-bit mixing macros */
#define EXTRACT_SAMPLE_SIMD(srce, var, size) var = _mm_srai_epi32(_mm_load_si128((__m128i*)(srce)), BITSHIFT+16-size);
#define EXTRACT_SAMPLE_SIMD_F(srce, var, size, mul) var = _mm_mul_ps(_mm_cvtepi32_ps(_mm_srai_epi32(_mm_load_si128((__m128i*)(srce)), BITSHIFT-size)), mul);
#define EXTRACT_SAMPLE_SIMD_0(srce, var) EXTRACT_SAMPLE_SIMD(srce, var, 0)
#define EXTRACT_SAMPLE_SIMD_8(srce, var) EXTRACT_SAMPLE_SIMD(srce, var, 8)
#define EXTRACT_SAMPLE_SIMD_16(srce, var) EXTRACT_SAMPLE_SIMD(srce, var, 16)
#define PUT_SAMPLE_SIMD_W(dste, v1, v2) _mm_store_si128((__m128i*)(dste), _mm_packs_epi32(v1, v2));
#define PUT_SAMPLE_SIMD_B(dste, v1, v2, v3, v4) _mm_store_si128((__m128i*)(dste), _mm_add_epi8(_mm_packs_epi16(_mm_packs_epi32(v1, v2), _mm_packs_epi32(v3, v4)), _mm_set1_epi8(128)));
#define PUT_SAMPLE_SIMD_F(dste, v1) _mm_store_ps((float*)(dste), v1);
#define LOAD_PS1_SIMD(ptr) _mm_load_ps1(ptr)
#define simd_m128i __m128i
#define simd_m128 __m128
#endif
#endif
/* ex:set ts=4: */
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