diff options
Diffstat (limited to 'src/libs/mikmod/mplayer.c')
| -rw-r--r-- | src/libs/mikmod/mplayer.c | 3561 |
1 files changed, 3561 insertions, 0 deletions
diff --git a/src/libs/mikmod/mplayer.c b/src/libs/mikmod/mplayer.c new file mode 100644 index 0000000..812410a --- /dev/null +++ b/src/libs/mikmod/mplayer.c @@ -0,0 +1,3561 @@ +/* MikMod sound library + (c) 1998, 1999, 2000, 2001 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. +*/ + +/*============================================================================== + + $Id$ + + The Protracker Player Driver + + The protracker driver supports all base Protracker 3.x commands and features. + +==============================================================================*/ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <string.h> +#include <stdarg.h> +#ifdef SRANDOM_IN_MATH_H +#include <math.h> +#else +#include <stdlib.h> +#endif + +#include "mikmod_internals.h" + +#ifdef SUNOS +extern int fprintf(FILE *, const char *, ...); +extern long int random(void); +#endif + +/* The currently playing module */ +/* This variable should better be static, but it would break the ABI, so this + will wait */ +/*static*/ MODULE *pf = NULL; + +#define HIGH_OCTAVE 2 /* number of above-range octaves */ + +static UWORD oldperiods[OCTAVE*2]={ + 0x6b00, 0x6800, 0x6500, 0x6220, 0x5f50, 0x5c80, + 0x5a00, 0x5740, 0x54d0, 0x5260, 0x5010, 0x4dc0, + 0x4b90, 0x4960, 0x4750, 0x4540, 0x4350, 0x4160, + 0x3f90, 0x3dc0, 0x3c10, 0x3a40, 0x38b0, 0x3700 +}; + +static UBYTE VibratoTable[32]={ + 0, 24, 49, 74, 97,120,141,161,180,197,212,224,235,244,250,253, + 255,253,250,244,235,224,212,197,180,161,141,120, 97, 74, 49, 24 +}; + +static UBYTE avibtab[128]={ + 0, 1, 3, 4, 6, 7, 9,10,12,14,15,17,18,20,21,23, + 24,25,27,28,30,31,32,34,35,36,38,39,40,41,42,44, + 45,46,47,48,49,50,51,52,53,54,54,55,56,57,57,58, + 59,59,60,60,61,61,62,62,62,63,63,63,63,63,63,63, + 64,63,63,63,63,63,63,63,62,62,62,61,61,60,60,59, + 59,58,57,57,56,55,54,54,53,52,51,50,49,48,47,46, + 45,44,42,41,40,39,38,36,35,34,32,31,30,28,27,25, + 24,23,21,20,18,17,15,14,12,10, 9, 7, 6, 4, 3, 1 +}; + +/* Triton's linear periods to frequency translation table (for XM modules) */ +static ULONG lintab[768]={ + 535232,534749,534266,533784,533303,532822,532341,531861, + 531381,530902,530423,529944,529466,528988,528511,528034, + 527558,527082,526607,526131,525657,525183,524709,524236, + 523763,523290,522818,522346,521875,521404,520934,520464, + 519994,519525,519057,518588,518121,517653,517186,516720, + 516253,515788,515322,514858,514393,513929,513465,513002, + 512539,512077,511615,511154,510692,510232,509771,509312, + 508852,508393,507934,507476,507018,506561,506104,505647, + 505191,504735,504280,503825,503371,502917,502463,502010, + 501557,501104,500652,500201,499749,499298,498848,498398, + 497948,497499,497050,496602,496154,495706,495259,494812, + 494366,493920,493474,493029,492585,492140,491696,491253, + 490809,490367,489924,489482,489041,488600,488159,487718, + 487278,486839,486400,485961,485522,485084,484647,484210, + 483773,483336,482900,482465,482029,481595,481160,480726, + 480292,479859,479426,478994,478562,478130,477699,477268, + 476837,476407,475977,475548,475119,474690,474262,473834, + 473407,472979,472553,472126,471701,471275,470850,470425, + 470001,469577,469153,468730,468307,467884,467462,467041, + 466619,466198,465778,465358,464938,464518,464099,463681, + 463262,462844,462427,462010,461593,461177,460760,460345, + 459930,459515,459100,458686,458272,457859,457446,457033, + 456621,456209,455797,455386,454975,454565,454155,453745, + 453336,452927,452518,452110,451702,451294,450887,450481, + 450074,449668,449262,448857,448452,448048,447644,447240, + 446836,446433,446030,445628,445226,444824,444423,444022, + 443622,443221,442821,442422,442023,441624,441226,440828, + 440430,440033,439636,439239,438843,438447,438051,437656, + 437261,436867,436473,436079,435686,435293,434900,434508, + 434116,433724,433333,432942,432551,432161,431771,431382, + 430992,430604,430215,429827,429439,429052,428665,428278, + 427892,427506,427120,426735,426350,425965,425581,425197, + 424813,424430,424047,423665,423283,422901,422519,422138, + 421757,421377,420997,420617,420237,419858,419479,419101, + 418723,418345,417968,417591,417214,416838,416462,416086, + 415711,415336,414961,414586,414212,413839,413465,413092, + 412720,412347,411975,411604,411232,410862,410491,410121, + 409751,409381,409012,408643,408274,407906,407538,407170, + 406803,406436,406069,405703,405337,404971,404606,404241, + 403876,403512,403148,402784,402421,402058,401695,401333, + 400970,400609,400247,399886,399525,399165,398805,398445, + 398086,397727,397368,397009,396651,396293,395936,395579, + 395222,394865,394509,394153,393798,393442,393087,392733, + 392378,392024,391671,391317,390964,390612,390259,389907, + 389556,389204,388853,388502,388152,387802,387452,387102, + 386753,386404,386056,385707,385359,385012,384664,384317, + 383971,383624,383278,382932,382587,382242,381897,381552, + 381208,380864,380521,380177,379834,379492,379149,378807, + 378466,378124,377783,377442,377102,376762,376422,376082, + 375743,375404,375065,374727,374389,374051,373714,373377, + 373040,372703,372367,372031,371695,371360,371025,370690, + 370356,370022,369688,369355,369021,368688,368356,368023, + 367691,367360,367028,366697,366366,366036,365706,365376, + 365046,364717,364388,364059,363731,363403,363075,362747, + 362420,362093,361766,361440,361114,360788,360463,360137, + 359813,359488,359164,358840,358516,358193,357869,357547, + 357224,356902,356580,356258,355937,355616,355295,354974, + 354654,354334,354014,353695,353376,353057,352739,352420, + 352103,351785,351468,351150,350834,350517,350201,349885, + 349569,349254,348939,348624,348310,347995,347682,347368, + 347055,346741,346429,346116,345804,345492,345180,344869, + 344558,344247,343936,343626,343316,343006,342697,342388, + 342079,341770,341462,341154,340846,340539,340231,339924, + 339618,339311,339005,338700,338394,338089,337784,337479, + 337175,336870,336566,336263,335959,335656,335354,335051, + 334749,334447,334145,333844,333542,333242,332941,332641, + 332341,332041,331741,331442,331143,330844,330546,330247, + 329950,329652,329355,329057,328761,328464,328168,327872, + 327576,327280,326985,326690,326395,326101,325807,325513, + 325219,324926,324633,324340,324047,323755,323463,323171, + 322879,322588,322297,322006,321716,321426,321136,320846, + 320557,320267,319978,319690,319401,319113,318825,318538, + 318250,317963,317676,317390,317103,316817,316532,316246, + 315961,315676,315391,315106,314822,314538,314254,313971, + 313688,313405,313122,312839,312557,312275,311994,311712, + 311431,311150,310869,310589,310309,310029,309749,309470, + 309190,308911,308633,308354,308076,307798,307521,307243, + 306966,306689,306412,306136,305860,305584,305308,305033, + 304758,304483,304208,303934,303659,303385,303112,302838, + 302565,302292,302019,301747,301475,301203,300931,300660, + 300388,300117,299847,299576,299306,299036,298766,298497, + 298227,297958,297689,297421,297153,296884,296617,296349, + 296082,295815,295548,295281,295015,294749,294483,294217, + 293952,293686,293421,293157,292892,292628,292364,292100, + 291837,291574,291311,291048,290785,290523,290261,289999, + 289737,289476,289215,288954,288693,288433,288173,287913, + 287653,287393,287134,286875,286616,286358,286099,285841, + 285583,285326,285068,284811,284554,284298,284041,283785, + 283529,283273,283017,282762,282507,282252,281998,281743, + 281489,281235,280981,280728,280475,280222,279969,279716, + 279464,279212,278960,278708,278457,278206,277955,277704, + 277453,277203,276953,276703,276453,276204,275955,275706, + 275457,275209,274960,274712,274465,274217,273970,273722, + 273476,273229,272982,272736,272490,272244,271999,271753, + 271508,271263,271018,270774,270530,270286,270042,269798, + 269555,269312,269069,268826,268583,268341,268099,267857 +}; + +#define LOGFAC 2*16 +static UWORD logtab[104]={ + LOGFAC*907,LOGFAC*900,LOGFAC*894,LOGFAC*887, + LOGFAC*881,LOGFAC*875,LOGFAC*868,LOGFAC*862, + LOGFAC*856,LOGFAC*850,LOGFAC*844,LOGFAC*838, + LOGFAC*832,LOGFAC*826,LOGFAC*820,LOGFAC*814, + LOGFAC*808,LOGFAC*802,LOGFAC*796,LOGFAC*791, + LOGFAC*785,LOGFAC*779,LOGFAC*774,LOGFAC*768, + LOGFAC*762,LOGFAC*757,LOGFAC*752,LOGFAC*746, + LOGFAC*741,LOGFAC*736,LOGFAC*730,LOGFAC*725, + LOGFAC*720,LOGFAC*715,LOGFAC*709,LOGFAC*704, + LOGFAC*699,LOGFAC*694,LOGFAC*689,LOGFAC*684, + LOGFAC*678,LOGFAC*675,LOGFAC*670,LOGFAC*665, + LOGFAC*660,LOGFAC*655,LOGFAC*651,LOGFAC*646, + LOGFAC*640,LOGFAC*636,LOGFAC*632,LOGFAC*628, + LOGFAC*623,LOGFAC*619,LOGFAC*614,LOGFAC*610, + LOGFAC*604,LOGFAC*601,LOGFAC*597,LOGFAC*592, + LOGFAC*588,LOGFAC*584,LOGFAC*580,LOGFAC*575, + LOGFAC*570,LOGFAC*567,LOGFAC*563,LOGFAC*559, + LOGFAC*555,LOGFAC*551,LOGFAC*547,LOGFAC*543, + LOGFAC*538,LOGFAC*535,LOGFAC*532,LOGFAC*528, + LOGFAC*524,LOGFAC*520,LOGFAC*516,LOGFAC*513, + LOGFAC*508,LOGFAC*505,LOGFAC*502,LOGFAC*498, + LOGFAC*494,LOGFAC*491,LOGFAC*487,LOGFAC*484, + LOGFAC*480,LOGFAC*477,LOGFAC*474,LOGFAC*470, + LOGFAC*467,LOGFAC*463,LOGFAC*460,LOGFAC*457, + LOGFAC*453,LOGFAC*450,LOGFAC*447,LOGFAC*443, + LOGFAC*440,LOGFAC*437,LOGFAC*434,LOGFAC*431 +}; + +static SBYTE PanbrelloTable[256]={ + 0, 2, 3, 5, 6, 8, 9, 11, 12, 14, 16, 17, 19, 20, 22, 23, + 24, 26, 27, 29, 30, 32, 33, 34, 36, 37, 38, 39, 41, 42, 43, 44, + 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 56, 57, 58, 59, + 59, 60, 60, 61, 61, 62, 62, 62, 63, 63, 63, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 63, 63, 63, 62, 62, 62, 61, 61, 60, 60, + 59, 59, 58, 57, 56, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46, + 45, 44, 43, 42, 41, 39, 38, 37, 36, 34, 33, 32, 30, 29, 27, 26, + 24, 23, 22, 20, 19, 17, 16, 14, 12, 11, 9, 8, 6, 5, 3, 2, + 0,- 2,- 3,- 5,- 6,- 8,- 9,-11,-12,-14,-16,-17,-19,-20,-22,-23, + -24,-26,-27,-29,-30,-32,-33,-34,-36,-37,-38,-39,-41,-42,-43,-44, + -45,-46,-47,-48,-49,-50,-51,-52,-53,-54,-55,-56,-56,-57,-58,-59, + -59,-60,-60,-61,-61,-62,-62,-62,-63,-63,-63,-64,-64,-64,-64,-64, + -64,-64,-64,-64,-64,-64,-63,-63,-63,-62,-62,-62,-61,-61,-60,-60, + -59,-59,-58,-57,-56,-56,-55,-54,-53,-52,-51,-50,-49,-48,-47,-46, + -45,-44,-43,-42,-41,-39,-38,-37,-36,-34,-33,-32,-30,-29,-27,-26, + -24,-23,-22,-20,-19,-17,-16,-14,-12,-11,- 9,- 8,- 6,- 5,- 3,- 2 +}; + +/* returns a random value between 0 and ceil-1, ceil must be a power of two */ +static int getrandom(int ceil) +{ +#ifdef HAVE_SRANDOM + return random()&(ceil-1); +#else + return (rand()*ceil)/(RAND_MAX+1.0); +#endif +} + +/* New Note Action Scoring System : + -------------------------------- + 1) total-volume (fadevol, chanvol, volume) is the main scorer. + 2) a looping sample is a bonus x2 + 3) a foreground channel is a bonus x4 + 4) an active envelope with keyoff is a handicap -x2 +*/ +static int MP_FindEmptyChannel(MODULE *mod) +{ + MP_VOICE *a; + ULONG t,k,tvol,pp; + + for (t=0;t<md_sngchn;t++) + if (((mod->voice[t].main.kick==KICK_ABSENT)|| + (mod->voice[t].main.kick==KICK_ENV))&& + Voice_Stopped_internal(t)) + return t; + + tvol=0xffffffUL;t=-1;a=mod->voice; + for (k=0;k<md_sngchn;k++,a++) { + /* allow us to take over a nonexisting sample */ + if (!a->main.s) + return k; + + if ((a->main.kick==KICK_ABSENT)||(a->main.kick==KICK_ENV)) { + pp=a->totalvol<<((a->main.s->flags&SF_LOOP)?1:0); + if ((a->master)&&(a==a->master->slave)) + pp<<=2; + + if (pp<tvol) { + tvol=pp; + t=k; + } + } + } + + if (tvol>8000*7) return -1; + return t; +} + +static SWORD Interpolate(SWORD p,SWORD p1,SWORD p2,SWORD v1,SWORD v2) +{ + if ((p1==p2)||(p==p1)) return v1; + return v1+((SLONG)((p-p1)*(v2-v1))/(p2-p1)); +} + +UWORD getlinearperiod(UWORD note,ULONG fine) +{ + UWORD t; + + t=((20L+2*HIGH_OCTAVE)*OCTAVE+2-note)*32L-(fine>>1); + return t; +} + +static UWORD getlogperiod(UWORD note,ULONG fine) +{ + UWORD n,o; + UWORD p1,p2; + ULONG i; + + n=note%(2*OCTAVE); + o=note/(2*OCTAVE); + i=(n<<2)+(fine>>4); /* n*8 + fine/16 */ + + p1=logtab[i]; + p2=logtab[i+1]; + + return (Interpolate(fine>>4,0,15,p1,p2)>>o); +} + +static UWORD getoldperiod(UWORD note,ULONG speed) +{ + UWORD n,o; + + /* This happens sometimes on badly converted AMF, and old MOD */ + if (!speed) { +#ifdef MIKMOD_DEBUG + fprintf(stderr,"\rmplayer: getoldperiod() called with note=%d, speed=0 !\n",note); +#endif + return 4242; /* <- prevent divide overflow.. (42 hehe) */ + } + + n=note%(2*OCTAVE); + o=note/(2*OCTAVE); + return ((8363L*(ULONG)oldperiods[n])>>o)/speed; +} + +static UWORD GetPeriod(UWORD flags, UWORD note, ULONG speed) +{ + if (flags & UF_XMPERIODS) { + if (flags & UF_LINEAR) + return getlinearperiod(note, speed); + else + return getlogperiod(note, speed); + } else + return getoldperiod(note, speed); +} + +static SWORD InterpolateEnv(SWORD p,ENVPT *a,ENVPT *b) +{ + return (Interpolate(p,a->pos,b->pos,a->val,b->val)); +} + +static SWORD DoPan(SWORD envpan,SWORD pan) +{ + int newpan; + + newpan=pan+(((envpan-PAN_CENTER)*(128-abs(pan-PAN_CENTER)))/128); + + return (newpan<PAN_LEFT)?PAN_LEFT:(newpan>PAN_RIGHT?PAN_RIGHT:newpan); +} + +static SWORD StartEnvelope(ENVPR *t,UBYTE flg,UBYTE pts,UBYTE susbeg,UBYTE susend,UBYTE beg,UBYTE end,ENVPT *p,UBYTE keyoff) +{ + t->flg=flg; + t->pts=pts; + t->susbeg=susbeg; + t->susend=susend; + t->beg=beg; + t->end=end; + t->env=p; + t->p=0; + t->a=0; + t->b=((t->flg&EF_SUSTAIN)&&(!(keyoff&KEY_OFF)))?0:1; + + /* Imago Orpheus sometimes stores an extra initial point in the envelope */ + if ((t->pts>=2)&&(t->env[0].pos==t->env[1].pos)) { + t->a++;t->b++; + } + + /* Fit in the envelope, still */ + if (t->a >= t->pts) + t->a = t->pts - 1; + if (t->b >= t->pts) + t->b = t->pts-1; + + return t->env[t->a].val; +} + +/* This procedure processes all envelope types, include volume, pitch, and + panning. Envelopes are defined by a set of points, each with a magnitude + [relating either to volume, panning position, or pitch modifier] and a tick + position. + + Envelopes work in the following manner: + + (a) Each tick the envelope is moved a point further in its progression. For + an accurate progression, magnitudes between two envelope points are + interpolated. + + (b) When progression reaches a defined point on the envelope, values are + shifted to interpolate between this point and the next, and checks for + loops or envelope end are done. + + Misc: + Sustain loops are loops that are only active as long as the keyoff flag is + clear. When a volume envelope terminates, so does the current fadeout. +*/ +static SWORD ProcessEnvelope(MP_VOICE *aout, ENVPR *t, SWORD v) +{ + if (t->flg & EF_ON) { + UBYTE a, b; /* actual points in the envelope */ + UWORD p; /* the 'tick counter' - real point being played */ + + a = t->a; + b = t->b; + p = t->p; + + /* + * Sustain loop on one point (XM type). + * Not processed if KEYOFF. + * Don't move and don't interpolate when the point is reached + */ + if ((t->flg & EF_SUSTAIN) && t->susbeg == t->susend && + (!(aout->main.keyoff & KEY_OFF) && p == t->env[t->susbeg].pos)) { + v = t->env[t->susbeg].val; + } else { + /* + * All following situations will require interpolation between + * two envelope points. + */ + + /* + * Sustain loop between two points (IT type). + * Not processed if KEYOFF. + */ + /* if we were on a loop point, loop now */ + if ((t->flg & EF_SUSTAIN) && !(aout->main.keyoff & KEY_OFF) && + a >= t->susend) { + a = t->susbeg; + b = (t->susbeg==t->susend)?a:a+1; + p = t->env[a].pos; + v = t->env[a].val; + } else + /* + * Regular loop. + * Be sure to correctly handle single point loops. + */ + if ((t->flg & EF_LOOP) && a >= t->end) { + a = t->beg; + b = t->beg == t->end ? a : a + 1; + p = t->env[a].pos; + v = t->env[a].val; + } else + /* + * Non looping situations. + */ + if (a != b) + v = InterpolateEnv(p, &t->env[a], &t->env[b]); + else + v = t->env[a].val; + + /* + * Start to fade if the volume envelope is finished. + */ + if (p >= t->env[t->pts - 1].pos) { + if (t->flg & EF_VOLENV) { + aout->main.keyoff |= KEY_FADE; + if (!v) + aout->main.fadevol = 0; + } + } else { + p++; + /* did pointer reach point b? */ + if (p >= t->env[b].pos) + a = b++; /* shift points a and b */ + } + t->a = a; + t->b = b; + t->p = p; + } + } + return v; +} + +/* XM linear period to frequency conversion */ +ULONG getfrequency(UWORD flags,ULONG period) +{ + if (flags & UF_LINEAR) { + SLONG shift = ((SLONG)period / 768) - HIGH_OCTAVE; + + if (shift >= 0) + return lintab[period % 768] >> shift; + else + return lintab[period % 768] << (-shift); + } else + return (8363L*1712L)/(period?period:1); +} + +/*========== Protracker effects */ + +static void DoArpeggio(UWORD tick, UWORD flags, MP_CONTROL *a, UBYTE style) +{ + UBYTE note=a->main.note; + + if (a->arpmem) { + switch (style) { + case 0: /* mod style: N, N+x, N+y */ + switch (tick % 3) { + /* case 0: unchanged */ + case 1: + note += (a->arpmem >> 4); + break; + case 2: + note += (a->arpmem & 0xf); + break; + } + break; + case 3: /* okt arpeggio 3: N-x, N, N+y */ + switch (tick % 3) { + case 0: + note -= (a->arpmem >> 4); + break; + /* case 1: unchanged */ + case 2: + note += (a->arpmem & 0xf); + break; + } + break; + case 4: /* okt arpeggio 4: N, N+y, N, N-x */ + switch (tick % 4) { + /* case 0, case 2: unchanged */ + case 1: + note += (a->arpmem & 0xf); + break; + case 3: + note -= (a->arpmem >> 4); + break; + } + break; + case 5: /* okt arpeggio 5: N-x, N+y, N, and nothing at tick 0 */ + if (!tick) + break; + switch (tick % 3) { + /* case 0: unchanged */ + case 1: + note -= (a->arpmem >> 4); + break; + case 2: + note += (a->arpmem & 0xf); + break; + } + break; + } + a->main.period = GetPeriod(flags, (UWORD)note << 1, a->speed); + a->ownper = 1; + } +} + +static int DoPTEffect0(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat = UniGetByte(); + if (!tick) { + if (!dat && (flags & UF_ARPMEM)) + dat=a->arpmem; + else + a->arpmem=dat; + } + if (a->main.period) + DoArpeggio(tick, flags, a, 0); + + return 0; +} + +static int DoPTEffect1(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat = UniGetByte(); + if (!tick && dat) + a->slidespeed = (UWORD)dat << 2; + if (a->main.period) + if (tick) + a->tmpperiod -= a->slidespeed; + + return 0; +} + +static int DoPTEffect2(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat = UniGetByte(); + if (!tick && dat) + a->slidespeed = (UWORD)dat << 2; + if (a->main.period) + if (tick) + a->tmpperiod += a->slidespeed; + + return 0; +} + +static void DoToneSlide(UWORD tick, MP_CONTROL *a) +{ + if (!a->main.fadevol) + a->main.kick = (a->main.kick == KICK_NOTE)? KICK_NOTE : KICK_KEYOFF; + else + a->main.kick = (a->main.kick == KICK_NOTE)? KICK_ENV : KICK_ABSENT; + + if (tick != 0) { + int dist; + + /* We have to slide a->main.period towards a->wantedperiod, so compute + the difference between those two values */ + dist=a->main.period-a->wantedperiod; + + /* if they are equal or if portamentospeed is too big ...*/ + if (dist == 0 || a->portspeed > abs(dist)) + /* ...make tmpperiod equal tperiod */ + a->tmpperiod=a->main.period=a->wantedperiod; + else if (dist>0) { + a->tmpperiod-=a->portspeed; + a->main.period-=a->portspeed; /* dist>0, slide up */ + } else { + a->tmpperiod+=a->portspeed; + a->main.period+=a->portspeed; /* dist<0, slide down */ + } + } else + a->tmpperiod=a->main.period; + a->ownper = 1; +} + +static int DoPTEffect3(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if ((!tick)&&(dat)) a->portspeed=(UWORD)dat<<2; + if (a->main.period) + DoToneSlide(tick, a); + + return 0; +} + +static void DoVibrato(UWORD tick, MP_CONTROL *a) +{ + UBYTE q; + UWORD temp = 0; /* silence warning */ + + if (!tick) + return; + + q=(a->vibpos>>2)&0x1f; + + switch (a->wavecontrol&3) { + case 0: /* sine */ + temp=VibratoTable[q]; + break; + case 1: /* ramp down */ + q<<=3; + if (a->vibpos<0) q=255-q; + temp=q; + break; + case 2: /* square wave */ + temp=255; + break; + case 3: /* random wave */ + temp=getrandom(256); + break; + } + + temp*=a->vibdepth; + temp>>=7;temp<<=2; + + if (a->vibpos>=0) + a->main.period=a->tmpperiod+temp; + else + a->main.period=a->tmpperiod-temp; + a->ownper = 1; + + if (tick != 0) + a->vibpos+=a->vibspd; +} + +static int DoPTEffect4(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if (!tick) { + if (dat&0x0f) a->vibdepth=dat&0xf; + if (dat&0xf0) a->vibspd=(dat&0xf0)>>2; + } + if (a->main.period) + DoVibrato(tick, a); + + return 0; +} + +static void DoVolSlide(MP_CONTROL *a, UBYTE dat) +{ + if (dat&0xf) { + a->tmpvolume-=(dat&0x0f); + if (a->tmpvolume<0) + a->tmpvolume=0; + } else { + a->tmpvolume+=(dat>>4); + if (a->tmpvolume>64) + a->tmpvolume=64; + } +} + +static int DoPTEffect5(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if (a->main.period) + DoToneSlide(tick, a); + + if (tick) + DoVolSlide(a, dat); + + return 0; +} + +/* DoPTEffect6 after DoPTEffectA */ + +static int DoPTEffect7(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + UBYTE q; + UWORD temp = 0; /* silence warning */ + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if (!tick) { + if (dat&0x0f) a->trmdepth=dat&0xf; + if (dat&0xf0) a->trmspd=(dat&0xf0)>>2; + } + if (a->main.period) { + q=(a->trmpos>>2)&0x1f; + + switch ((a->wavecontrol>>4)&3) { + case 0: /* sine */ + temp=VibratoTable[q]; + break; + case 1: /* ramp down */ + q<<=3; + if (a->trmpos<0) q=255-q; + temp=q; + break; + case 2: /* square wave */ + temp=255; + break; + case 3: /* random wave */ + temp=getrandom(256); + break; + } + temp*=a->trmdepth; + temp>>=6; + + if (a->trmpos>=0) { + a->volume=a->tmpvolume+temp; + if (a->volume>64) a->volume=64; + } else { + a->volume=a->tmpvolume-temp; + if (a->volume<0) a->volume=0; + } + a->ownvol = 1; + + if (tick) + a->trmpos+=a->trmspd; + } + + return 0; +} + +static int DoPTEffect8(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)tick; /* unused arg */ + (void)flags; /* unused arg */ + + dat = UniGetByte(); + if (mod->panflag) + a->main.panning = mod->panning[channel] = dat; + + return 0; +} + +static int DoPTEffect9(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if (!tick) { + if (dat) a->soffset=(UWORD)dat<<8; + a->main.start=a->hioffset|a->soffset; + + if ((a->main.s)&&(a->main.start>a->main.s->length)) + a->main.start=a->main.s->flags&(SF_LOOP|SF_BIDI)? + a->main.s->loopstart:a->main.s->length; + } + + return 0; +} + +static int DoPTEffectA(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if (tick) + DoVolSlide(a, dat); + + return 0; +} + +static int DoPTEffect6(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + if (a->main.period) + DoVibrato(tick, a); + DoPTEffectA(tick, flags, a, mod, channel); + + return 0; +} + +static int DoPTEffectB(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)a; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + + if (tick || mod->patdly2) + return 0; + + /* Vincent Voois uses a nasty trick in "Universal Bolero" */ + if (dat == mod->sngpos && mod->patbrk == mod->patpos) + return 0; + + if (!mod->loop && !mod->patbrk && + (dat < mod->sngpos || + (mod->sngpos == (mod->numpos - 1) && !mod->patbrk) || + (dat == mod->sngpos && (flags & UF_NOWRAP)) + )) { + /* if we don't loop, better not to skip the end of the + pattern, after all... so: + mod->patbrk=0; */ + mod->posjmp=3; + } else { + /* if we were fading, adjust... */ + if (mod->sngpos == (mod->numpos-1)) + mod->volume=mod->initvolume>128?128:mod->initvolume; + mod->sngpos=dat; + mod->posjmp=2; + mod->patpos=0; + } + + return 0; +} + +static int DoPTEffectC(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if (tick) return 0; + if (dat==(UBYTE)-1) a->anote=dat=0; /* note cut */ + else if (dat>64) dat=64; + a->tmpvolume=dat; + + return 0; +} + +static int DoPTEffectD(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)a; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if ((tick)||(mod->patdly2)) return 0; + if ((mod->positions[mod->sngpos]!=LAST_PATTERN)&& + (dat>mod->pattrows[mod->positions[mod->sngpos]])) + dat=mod->pattrows[mod->positions[mod->sngpos]]; + mod->patbrk=dat; + if (!mod->posjmp) { + /* don't ask me to explain this code - it makes + backwards.s3m and children.xm (heretic's version) play + correctly, among others. Take that for granted, or write + the page of comments yourself... you might need some + aspirin - Miod */ + if ((mod->sngpos==mod->numpos-1)&&(dat)&&((mod->loop)|| + (mod->positions[mod->sngpos]==(mod->numpat-1) + && !(flags&UF_NOWRAP)))) { + mod->sngpos=0; + mod->posjmp=2; + } else + mod->posjmp=3; + } + + return 0; +} + +static void DoEEffects(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, + SWORD channel, UBYTE dat) +{ + UBYTE nib = dat & 0xf; + + switch (dat>>4) { + case 0x0: /* hardware filter toggle, not supported */ + break; + case 0x1: /* fineslide up */ + if (a->main.period) + if (!tick) + a->tmpperiod-=(nib<<2); + break; + case 0x2: /* fineslide dn */ + if (a->main.period) + if (!tick) + a->tmpperiod+=(nib<<2); + break; + case 0x3: /* glissando ctrl */ + a->glissando=nib; + break; + case 0x4: /* set vibrato waveform */ + a->wavecontrol&=0xf0; + a->wavecontrol|=nib; + break; + case 0x5: /* set finetune */ + if (a->main.period) { + if (flags&UF_XMPERIODS) + a->speed=nib+128; + else + a->speed=finetune[nib]; + a->tmpperiod=GetPeriod(flags, (UWORD)a->main.note<<1,a->speed); + } + break; + case 0x6: /* set patternloop */ + if (tick) + break; + if (nib) { /* set reppos or repcnt ? */ + /* set repcnt, so check if repcnt already is set, which means we + are already looping */ + if (a->pat_repcnt) + a->pat_repcnt--; /* already looping, decrease counter */ + else { +#if 0 + /* this would make walker.xm, shipped with Xsoundtracker, + play correctly, but it's better to remain compatible + with FT2 */ + if ((!(flags&UF_NOWRAP))||(a->pat_reppos!=POS_NONE)) +#endif + a->pat_repcnt=nib; /* not yet looping, so set repcnt */ + } + + if (a->pat_repcnt) { /* jump to reppos if repcnt>0 */ + if (a->pat_reppos==POS_NONE) + a->pat_reppos=mod->patpos-1; + if (a->pat_reppos==-1) { + mod->pat_repcrazy=1; + mod->patpos=0; + } else + mod->patpos=a->pat_reppos; + } else a->pat_reppos=POS_NONE; + } else + a->pat_reppos=mod->patpos-1; /* set reppos - can be (-1) */ + break; + case 0x7: /* set tremolo waveform */ + a->wavecontrol&=0x0f; + a->wavecontrol|=nib<<4; + break; + case 0x8: /* set panning */ + if (mod->panflag) { + if (nib<=8) nib<<=4; + else nib*=17; + a->main.panning=mod->panning[channel]=nib; + } + break; + case 0x9: /* retrig note */ + /* do not retrigger on tick 0, until we are emulating FT2 and effect + data is zero */ + if (!tick && !((flags & UF_FT2QUIRKS) && (!nib))) + break; + /* only retrigger if data nibble > 0, or if tick 0 (FT2 compat) */ + if (nib || !tick) { + if (!a->retrig) { + /* when retrig counter reaches 0, reset counter and restart + the sample */ + if (a->main.period) a->main.kick=KICK_NOTE; + a->retrig=nib; + } + a->retrig--; /* countdown */ + } + break; + case 0xa: /* fine volume slide up */ + if (tick) + break; + a->tmpvolume+=nib; + if (a->tmpvolume>64) a->tmpvolume=64; + break; + case 0xb: /* fine volume slide dn */ + if (tick) + break; + a->tmpvolume-=nib; + if (a->tmpvolume<0)a->tmpvolume=0; + break; + case 0xc: /* cut note */ + /* When tick reaches the cut-note value, turn the volume to + zero (just like on the amiga) */ + if (tick>=nib) + a->tmpvolume=0; /* just turn the volume down */ + break; + case 0xd: /* note delay */ + /* delay the start of the sample until tick==nib */ + if (!tick) + a->main.notedelay=nib; + else if (a->main.notedelay) + a->main.notedelay--; + break; + case 0xe: /* pattern delay */ + if (!tick) + if (!mod->patdly2) + mod->patdly=nib+1; /* only once, when tick=0 */ + break; + case 0xf: /* invert loop, not supported */ + break; + } +} + +static int DoPTEffectE(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + DoEEffects(tick, flags, a, mod, channel, UniGetByte()); + + return 0; +} + +static int DoPTEffectF(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)a; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if (tick||mod->patdly2) return 0; + if (mod->extspd&&(dat>=mod->bpmlimit)) + mod->bpm=dat; + else + if (dat) { + mod->sngspd=(dat>=mod->bpmlimit)?mod->bpmlimit-1:dat; + mod->vbtick=0; + } + + return 0; +} + +/*========== Scream Tracker effects */ + +static int DoS3MEffectA(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE speed; + + (void)flags; /* unused arg */ + (void)a; /* unused arg */ + (void)channel; /* unused arg */ + + speed = UniGetByte(); + + if (tick || mod->patdly2) + return 0; + + if (speed > 128) + speed -= 128; + if (speed) { + mod->sngspd = speed; + mod->vbtick = 0; + } + + return 0; +} + +static void DoS3MVolSlide(UWORD tick, UWORD flags, MP_CONTROL *a, UBYTE inf) +{ + UBYTE lo, hi; + + if (inf) + a->s3mvolslide=inf; + else + inf=a->s3mvolslide; + + lo=inf&0xf; + hi=inf>>4; + + if (!lo) { + if ((tick)||(flags&UF_S3MSLIDES)) a->tmpvolume+=hi; + } else + if (!hi) { + if ((tick)||(flags&UF_S3MSLIDES)) a->tmpvolume-=lo; + } else + if (lo==0xf) { + if (!tick) a->tmpvolume+=(hi?hi:0xf); + } else + if (hi==0xf) { + if (!tick) a->tmpvolume-=(lo?lo:0xf); + } else + return; + + if (a->tmpvolume<0) + a->tmpvolume=0; + else if (a->tmpvolume>64) + a->tmpvolume=64; +} + +static int DoS3MEffectD(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + DoS3MVolSlide(tick, flags, a, UniGetByte()); + + return 1; +} + +static void DoS3MSlideDn(UWORD tick, MP_CONTROL *a, UBYTE inf) +{ + UBYTE hi,lo; + + if (inf) + a->slidespeed=inf; + else + inf=a->slidespeed; + + hi=inf>>4; + lo=inf&0xf; + + if (hi==0xf) { + if (!tick) a->tmpperiod+=(UWORD)lo<<2; + } else + if (hi==0xe) { + if (!tick) a->tmpperiod+=lo; + } else { + if (tick) a->tmpperiod+=(UWORD)inf<<2; + } +} + +static int DoS3MEffectE(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if (a->main.period) + DoS3MSlideDn(tick, a,dat); + + return 0; +} + +static void DoS3MSlideUp(UWORD tick, MP_CONTROL *a, UBYTE inf) +{ + UBYTE hi,lo; + + if (inf) a->slidespeed=inf; + else inf=a->slidespeed; + + hi=inf>>4; + lo=inf&0xf; + + if (hi==0xf) { + if (!tick) a->tmpperiod-=(UWORD)lo<<2; + } else + if (hi==0xe) { + if (!tick) a->tmpperiod-=lo; + } else { + if (tick) a->tmpperiod-=(UWORD)inf<<2; + } +} + +static int DoS3MEffectF(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if (a->main.period) + DoS3MSlideUp(tick, a,dat); + + return 0; +} + +static int DoS3MEffectI(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE inf, on, off; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + inf = UniGetByte(); + if (inf) + a->s3mtronof = inf; + else { + inf = a->s3mtronof; + if (!inf) + return 0; + } + + if (!tick) + return 0; + + on=(inf>>4)+1; + off=(inf&0xf)+1; + a->s3mtremor%=(on+off); + a->volume=(a->s3mtremor<on)?a->tmpvolume:0; + a->ownvol=1; + a->s3mtremor++; + + return 0; +} + +static int DoS3MEffectQ(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE inf; + + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + inf = UniGetByte(); + if (a->main.period) { + if (inf) { + a->s3mrtgslide=inf>>4; + a->s3mrtgspeed=inf&0xf; + } + + /* only retrigger if low nibble > 0 */ + if (a->s3mrtgspeed>0) { + if (!a->retrig) { + /* when retrig counter reaches 0, reset counter and restart the + sample */ + if (a->main.kick!=KICK_NOTE) a->main.kick=KICK_KEYOFF; + a->retrig=a->s3mrtgspeed; + + if ((tick)||(flags&UF_S3MSLIDES)) { + switch (a->s3mrtgslide) { + case 1: + case 2: + case 3: + case 4: + case 5: + a->tmpvolume-=(1<<(a->s3mrtgslide-1)); + break; + case 6: + a->tmpvolume=(2*a->tmpvolume)/3; + break; + case 7: + a->tmpvolume>>=1; + break; + case 9: + case 0xa: + case 0xb: + case 0xc: + case 0xd: + a->tmpvolume+=(1<<(a->s3mrtgslide-9)); + break; + case 0xe: + a->tmpvolume=(3*a->tmpvolume)>>1; + break; + case 0xf: + a->tmpvolume=a->tmpvolume<<1; + break; + } + if (a->tmpvolume<0) + a->tmpvolume=0; + else if (a->tmpvolume>64) + a->tmpvolume=64; + } + } + a->retrig--; /* countdown */ + } + } + + return 0; +} + +static int DoS3MEffectR(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat, q; + UWORD temp=0; /* silence warning */ + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat = UniGetByte(); + if (!tick) { + if (dat&0x0f) a->trmdepth=dat&0xf; + if (dat&0xf0) a->trmspd=(dat&0xf0)>>2; + } + + q=(a->trmpos>>2)&0x1f; + + switch ((a->wavecontrol>>4)&3) { + case 0: /* sine */ + temp=VibratoTable[q]; + break; + case 1: /* ramp down */ + q<<=3; + if (a->trmpos<0) q=255-q; + temp=q; + break; + case 2: /* square wave */ + temp=255; + break; + case 3: /* random */ + temp=getrandom(256); + break; + } + + temp*=a->trmdepth; + temp>>=7; + + if (a->trmpos>=0) { + a->volume=a->tmpvolume+temp; + if (a->volume>64) a->volume=64; + } else { + a->volume=a->tmpvolume-temp; + if (a->volume<0) a->volume=0; + } + a->ownvol = 1; + + if (tick) + a->trmpos+=a->trmspd; + + return 0; +} + +static int DoS3MEffectT(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE tempo; + + (void)flags; /* unused arg */ + (void)a; /* unused arg */ + (void)channel; /* unused arg */ + + tempo = UniGetByte(); + + if (tick || mod->patdly2) + return 0; + + mod->bpm = (tempo < 32) ? 32 : tempo; + + return 0; +} + +static int DoS3MEffectU(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat, q; + UWORD temp = 0; /* silence warning */ + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat = UniGetByte(); + if (!tick) { + if (dat&0x0f) a->vibdepth=dat&0xf; + if (dat&0xf0) a->vibspd=(dat&0xf0)>>2; + } else + if (a->main.period) { + q=(a->vibpos>>2)&0x1f; + + switch (a->wavecontrol&3) { + case 0: /* sine */ + temp=VibratoTable[q]; + break; + case 1: /* ramp down */ + q<<=3; + if (a->vibpos<0) q=255-q; + temp=q; + break; + case 2: /* square wave */ + temp=255; + break; + case 3: /* random */ + temp=getrandom(256); + break; + } + + temp*=a->vibdepth; + temp>>=8; + + if (a->vibpos>=0) + a->main.period=a->tmpperiod+temp; + else + a->main.period=a->tmpperiod-temp; + a->ownper = 1; + + a->vibpos+=a->vibspd; + } + + return 0; +} + +/*========== Envelope helpers */ + +static int DoKeyOff(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + (void)tick; /* unused arg */ + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + a->main.keyoff|=KEY_OFF; + if ((!(a->main.volflg&EF_ON))||(a->main.volflg&EF_LOOP)) + a->main.keyoff=KEY_KILL; + + return 0; +} + +static int DoKeyFade(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if ((tick>=dat)||(tick==mod->sngspd-1)) { + a->main.keyoff=KEY_KILL; + if (!(a->main.volflg&EF_ON)) + a->main.fadevol=0; + } + + return 0; +} + +/*========== Fast Tracker effects */ + +/* DoXMEffect6 after DoXMEffectA */ + +static int DoXMEffectA(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE inf, lo, hi; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + inf = UniGetByte(); + if (inf) + a->s3mvolslide = inf; + else + inf = a->s3mvolslide; + + if (tick) { + lo=inf&0xf; + hi=inf>>4; + + if (!hi) { + a->tmpvolume-=lo; + if (a->tmpvolume<0) a->tmpvolume=0; + } else { + a->tmpvolume+=hi; + if (a->tmpvolume>64) a->tmpvolume=64; + } + } + + return 0; +} + +static int DoXMEffect6(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + if (a->main.period) + DoVibrato(tick, a); + + return DoXMEffectA(tick, flags, a, mod, channel); +} + +static int DoXMEffectE1(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if (!tick) { + if (dat) a->fportupspd=dat; + if (a->main.period) + a->tmpperiod-=(a->fportupspd<<2); + } + + return 0; +} + +static int DoXMEffectE2(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if (!tick) { + if (dat) a->fportdnspd=dat; + if (a->main.period) + a->tmpperiod+=(a->fportdnspd<<2); + } + + return 0; +} + +static int DoXMEffectEA(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if (!tick) + if (dat) a->fslideupspd=dat; + a->tmpvolume+=a->fslideupspd; + if (a->tmpvolume>64) a->tmpvolume=64; + + return 0; +} + +static int DoXMEffectEB(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if (!tick) + if (dat) a->fslidednspd=dat; + a->tmpvolume-=a->fslidednspd; + if (a->tmpvolume<0) a->tmpvolume=0; + + return 0; +} + +static int DoXMEffectG(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + (void)tick; /* unused arg */ + (void)flags; /* unused arg */ + (void)a; /* unused arg */ + (void)channel; /* unused arg */ + + mod->volume=UniGetByte()<<1; + if (mod->volume>128) mod->volume=128; + + return 0; +} + +static int DoXMEffectH(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE inf; + + (void)flags; /* unused arg */ + (void)a; /* unused arg */ + (void)channel; /* unused arg */ + + inf = UniGetByte(); + + if (tick) { + if (inf) mod->globalslide=inf; + else inf=mod->globalslide; + if (inf & 0xf0) inf&=0xf0; + mod->volume=mod->volume+((inf>>4)-(inf&0xf))*2; + + if (mod->volume<0) + mod->volume=0; + else if (mod->volume>128) + mod->volume=128; + } + + return 0; +} + +static int DoXMEffectL(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat=UniGetByte(); + if ((!tick)&&(a->main.i)) { + UWORD points; + INSTRUMENT *i=a->main.i; + MP_VOICE *aout; + + if ((aout=a->slave)) { + if (aout->venv.env) { + points=i->volenv[i->volpts-1].pos; + aout->venv.p=aout->venv.env[(dat>points)?points:dat].pos; + } + if (aout->penv.env) { + points=i->panenv[i->panpts-1].pos; + aout->penv.p=aout->penv.env[(dat>points)?points:dat].pos; + } + } + } + + return 0; +} + +static int DoXMEffectP(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE inf, lo, hi; + SWORD pan; + + (void)flags; /* unused arg */ + (void)channel; /* unused arg */ + + inf = UniGetByte(); + if (!mod->panflag) + return 0; + + if (inf) + a->pansspd = inf; + else + inf =a->pansspd; + + if (tick) { + lo=inf&0xf; + hi=inf>>4; + + /* slide right has absolute priority */ + if (hi) + lo = 0; + + pan=((a->main.panning==PAN_SURROUND)?PAN_CENTER:a->main.panning)+hi-lo; + a->main.panning=(pan<PAN_LEFT)?PAN_LEFT:(pan>PAN_RIGHT?PAN_RIGHT:pan); + } + + return 0; +} + +static int DoXMEffectX1(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat = UniGetByte(); + if (dat) + a->ffportupspd = dat; + else + dat = a->ffportupspd; + + if (a->main.period) + if (!tick) { + a->main.period-=dat; + a->tmpperiod-=dat; + a->ownper = 1; + } + + return 0; +} + +static int DoXMEffectX2(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat = UniGetByte(); + if (dat) + a->ffportdnspd=dat; + else + dat = a->ffportdnspd; + + if (a->main.period) + if (!tick) { + a->main.period+=dat; + a->tmpperiod+=dat; + a->ownper = 1; + } + + return 0; +} + +/*========== Impulse Tracker effects */ + +static void DoITToneSlide(UWORD tick, MP_CONTROL *a, UBYTE dat) +{ + if (dat) + a->portspeed = dat; + + /* if we don't come from another note, ignore the slide and play the note + as is */ + if (!a->oldnote || !a->main.period) + return; + + if ((!tick)&&(a->newsamp)){ + a->main.kick=KICK_NOTE; + a->main.start=-1; + } else + a->main.kick=(a->main.kick==KICK_NOTE)?KICK_ENV:KICK_ABSENT; + + if (tick) { + int dist; + + /* We have to slide a->main.period towards a->wantedperiod, compute the + difference between those two values */ + dist=a->main.period-a->wantedperiod; + + /* if they are equal or if portamentospeed is too big... */ + if ((!dist)||((a->portspeed<<2)>abs(dist))) + /* ... make tmpperiod equal tperiod */ + a->tmpperiod=a->main.period=a->wantedperiod; + else + if (dist>0) { + a->tmpperiod-=a->portspeed<<2; + a->main.period-=a->portspeed<<2; /* dist>0 slide up */ + } else { + a->tmpperiod+=a->portspeed<<2; + a->main.period+=a->portspeed<<2; /* dist<0 slide down */ + } + } else + a->tmpperiod=a->main.period; + a->ownper=1; +} + +static int DoITEffectG(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + DoITToneSlide(tick, a, UniGetByte()); + + return 0; +} + +static void DoITVibrato(UWORD tick, MP_CONTROL *a, UBYTE dat) +{ + UBYTE q; + UWORD temp=0; + + if (!tick) { + if (dat&0x0f) a->vibdepth=dat&0xf; + if (dat&0xf0) a->vibspd=(dat&0xf0)>>2; + } + if (!a->main.period) + return; + + q=(a->vibpos>>2)&0x1f; + + switch (a->wavecontrol&3) { + case 0: /* sine */ + temp=VibratoTable[q]; + break; + case 1: /* square wave */ + temp=255; + break; + case 2: /* ramp down */ + q<<=3; + if (a->vibpos<0) q=255-q; + temp=q; + break; + case 3: /* random */ + temp=getrandom(256); + break; + } + + temp*=a->vibdepth; + temp>>=8; + temp<<=2; + + if (a->vibpos>=0) + a->main.period=a->tmpperiod+temp; + else + a->main.period=a->tmpperiod-temp; + a->ownper=1; + + a->vibpos+=a->vibspd; +} + +static int DoITEffectH(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + DoITVibrato(tick, a, UniGetByte()); + + return 0; +} + +static int DoITEffectI(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE inf, on, off; + + (void)tick; /* unused arg */ + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + inf = UniGetByte(); + if (inf) + a->s3mtronof = inf; + else { + inf = a->s3mtronof; + if (!inf) + return 0; + } + + on=(inf>>4); + off=(inf&0xf); + + a->s3mtremor%=(on+off); + a->volume=(a->s3mtremor<on)?a->tmpvolume:0; + a->ownvol = 1; + a->s3mtremor++; + + return 0; +} + +static int DoITEffectM(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + (void)tick; /* unused arg */ + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + a->main.chanvol=UniGetByte(); + if (a->main.chanvol>64) + a->main.chanvol=64; + else if (a->main.chanvol<0) + a->main.chanvol=0; + + return 0; +} + +static int DoITEffectN(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE inf, lo, hi; + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + inf = UniGetByte(); + + if (inf) + a->chanvolslide = inf; + else + inf = a->chanvolslide; + + lo=inf&0xf; + hi=inf>>4; + + if (!hi) + a->main.chanvol-=lo; + else + if (!lo) { + a->main.chanvol+=hi; + } else + if (hi==0xf) { + if (!tick) a->main.chanvol-=lo; + } else + if (lo==0xf) { + if (!tick) a->main.chanvol+=hi; + } + + if (a->main.chanvol<0) + a->main.chanvol=0; + else if (a->main.chanvol>64) + a->main.chanvol=64; + + return 0; +} + +static int DoITEffectP(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE inf, lo, hi; + SWORD pan; + + (void)flags; /* unused arg */ + (void)channel; /* unused arg */ + + inf = UniGetByte(); + if (inf) + a->pansspd = inf; + else + inf = a->pansspd; + + if (!mod->panflag) + return 0; + + lo=inf&0xf; + hi=inf>>4; + + pan=(a->main.panning==PAN_SURROUND)?PAN_CENTER:a->main.panning; + + if (!hi) + pan+=lo<<2; + else + if (!lo) { + pan-=hi<<2; + } else + if (hi==0xf) { + if (!tick) pan+=lo<<2; + } else + if (lo==0xf) { + if (!tick) pan-=hi<<2; + } + a->main.panning= + (pan<PAN_LEFT)?PAN_LEFT:(pan>PAN_RIGHT?PAN_RIGHT:pan); + + return 0; +} + +static int DoITEffectT(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE tempo; + SWORD temp; + + (void)tick; /* unused arg */ + (void)flags; /* unused arg */ + (void)a; /* unused arg */ + (void)channel; /* unused arg */ + + tempo = UniGetByte(); + + if (mod->patdly2) + return 0; + + temp = mod->bpm; + if (tempo & 0x10) + temp += (tempo & 0x0f); + else + temp -= tempo; + + mod->bpm=(temp>255)?255:(temp<1?1:temp); + + return 0; +} + +static int DoITEffectU(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat, q; + UWORD temp = 0; /* silence warning */ + + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat = UniGetByte(); + if (!tick) { + if (dat&0x0f) a->vibdepth=dat&0xf; + if (dat&0xf0) a->vibspd=(dat&0xf0)>>2; + } + if (a->main.period) { + q=(a->vibpos>>2)&0x1f; + + switch (a->wavecontrol&3) { + case 0: /* sine */ + temp=VibratoTable[q]; + break; + case 1: /* square wave */ + temp=255; + break; + case 2: /* ramp down */ + q<<=3; + if (a->vibpos<0) q=255-q; + temp=q; + break; + case 3: /* random */ + temp=getrandom(256); + break; + } + + temp*=a->vibdepth; + temp>>=8; + + if (a->vibpos>=0) + a->main.period=a->tmpperiod+temp; + else + a->main.period=a->tmpperiod-temp; + a->ownper = 1; + + a->vibpos+=a->vibspd; + } + + return 0; +} + +static int DoITEffectW(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE inf, lo, hi; + + (void)flags; /* unused arg */ + (void)a; /* unused arg */ + (void)channel; /* unused arg */ + + inf = UniGetByte(); + + if (inf) + mod->globalslide = inf; + else + inf = mod->globalslide; + + lo=inf&0xf; + hi=inf>>4; + + if (!lo) { + if (tick) mod->volume+=hi; + } else + if (!hi) { + if (tick) mod->volume-=lo; + } else + if (lo==0xf) { + if (!tick) mod->volume+=hi; + } else + if (hi==0xf) { + if (!tick) mod->volume-=lo; + } + + if (mod->volume<0) + mod->volume=0; + else if (mod->volume>128) + mod->volume=128; + + return 0; +} + +static int DoITEffectY(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat, q; + SLONG temp = 0; /* silence warning */ + + (void)flags; /* unused arg */ + + dat=UniGetByte(); + if (!tick) { + if (dat&0x0f) a->panbdepth=(dat&0xf); + if (dat&0xf0) a->panbspd=(dat&0xf0)>>4; + } + if (mod->panflag) { + q=a->panbpos; + + switch (a->panbwave) { + case 0: /* sine */ + temp=PanbrelloTable[q]; + break; + case 1: /* square wave */ + temp=(q<0x80)?64:0; + break; + case 2: /* ramp down */ + q<<=3; + temp=q; + break; + case 3: /* random */ + temp=getrandom(256); + break; + } + + temp*=a->panbdepth; + temp=(temp/8)+mod->panning[channel]; + + a->main.panning= + (temp<PAN_LEFT)?PAN_LEFT:(temp>PAN_RIGHT?PAN_RIGHT:temp); + a->panbpos+=a->panbspd; + + } + + return 0; +} + +static void DoNNAEffects(MODULE *, MP_CONTROL *, UBYTE); + +/* Impulse/Scream Tracker Sxx effects. + All Sxx effects share the same memory space. */ +static int DoITEffectS0(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat, inf, c; + + dat = UniGetByte(); + inf=dat&0xf; + c=dat>>4; + + if (!dat) { + c=a->sseffect; + inf=a->ssdata; + } else { + a->sseffect=c; + a->ssdata=inf; + } + + switch (c) { + case SS_GLISSANDO: /* S1x set glissando voice */ + DoEEffects(tick, flags, a, mod, channel, 0x30|inf); + break; + case SS_FINETUNE: /* S2x set finetune */ + DoEEffects(tick, flags, a, mod, channel, 0x50|inf); + break; + case SS_VIBWAVE: /* S3x set vibrato waveform */ + DoEEffects(tick, flags, a, mod, channel, 0x40|inf); + break; + case SS_TREMWAVE: /* S4x set tremolo waveform */ + DoEEffects(tick, flags, a, mod, channel, 0x70|inf); + break; + case SS_PANWAVE: /* S5x panbrello */ + a->panbwave=inf; + break; + case SS_FRAMEDELAY: /* S6x delay x number of frames (patdly) */ + DoEEffects(tick, flags, a, mod, channel, 0xe0|inf); + break; + case SS_S7EFFECTS: /* S7x instrument / NNA commands */ + DoNNAEffects(mod, a, inf); + break; + case SS_PANNING: /* S8x set panning position */ + DoEEffects(tick, flags, a, mod, channel, 0x80 | inf); + break; + case SS_SURROUND: /* S9x set surround sound */ + if (mod->panflag) + a->main.panning = mod->panning[channel] = PAN_SURROUND; + break; + case SS_HIOFFSET: /* SAy set high order sample offset yxx00h */ + if (!tick) { + a->hioffset=inf<<16; + a->main.start=a->hioffset|a->soffset; + + if ((a->main.s)&&(a->main.start>a->main.s->length)) + a->main.start=a->main.s->flags&(SF_LOOP|SF_BIDI)? + a->main.s->loopstart:a->main.s->length; + } + break; + case SS_PATLOOP: /* SBx pattern loop */ + DoEEffects(tick, flags, a, mod, channel, 0x60|inf); + break; + case SS_NOTECUT: /* SCx notecut */ + if (!inf) inf = 1; + DoEEffects(tick, flags, a, mod, channel, 0xC0|inf); + break; + case SS_NOTEDELAY: /* SDx notedelay */ + DoEEffects(tick, flags, a, mod, channel, 0xD0|inf); + break; + case SS_PATDELAY: /* SEx patterndelay */ + DoEEffects(tick, flags, a, mod, channel, 0xE0|inf); + break; + } + + return 0; +} + +/*========== Impulse Tracker Volume/Pan Column effects */ + +/* + * All volume/pan column effects share the same memory space. + */ + +static int DoVolEffects(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE c, inf; + + (void)channel; /* unused arg */ + + c = UniGetByte(); + inf = UniGetByte(); + + if ((!c)&&(!inf)) { + c=a->voleffect; + inf=a->voldata; + } else { + a->voleffect=c; + a->voldata=inf; + } + + if (c) + switch (c) { + case VOL_VOLUME: + if (tick) break; + if (inf>64) inf=64; + a->tmpvolume=inf; + break; + case VOL_PANNING: + if (mod->panflag) + a->main.panning=inf; + break; + case VOL_VOLSLIDE: + DoS3MVolSlide(tick, flags, a, inf); + return 1; + case VOL_PITCHSLIDEDN: + if (a->main.period) + DoS3MSlideDn(tick, a, inf); + break; + case VOL_PITCHSLIDEUP: + if (a->main.period) + DoS3MSlideUp(tick, a, inf); + break; + case VOL_PORTAMENTO: + DoITToneSlide(tick, a, inf); + break; + case VOL_VIBRATO: + DoITVibrato(tick, a, inf); + break; + } + + return 0; +} + +/*========== UltraTracker effects */ + +static int DoULTEffect9(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UWORD offset=UniGetWord(); + + (void)tick; /* unused arg */ + (void)flags; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + if (offset) + a->ultoffset=offset; + + a->main.start=a->ultoffset<<2; + if ((a->main.s)&&(a->main.start>a->main.s->length)) + a->main.start=a->main.s->flags&(SF_LOOP|SF_BIDI)? + a->main.s->loopstart:a->main.s->length; + + return 0; +} + +/*========== OctaMED effects */ + +static int DoMEDSpeed(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UWORD speed=UniGetWord(); + + (void)tick; /* unused arg */ + (void)flags; /* unused arg */ + (void)a; /* unused arg */ + (void)channel; /* unused arg */ + + mod->bpm=speed; + + return 0; +} + +static int DoMEDEffectF1(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + DoEEffects(tick, flags, a, mod, channel, 0x90|(mod->sngspd/2)); + + return 0; +} + +static int DoMEDEffectF2(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + DoEEffects(tick, flags, a, mod, channel, 0xd0|(mod->sngspd/2)); + + return 0; +} + +static int DoMEDEffectF3(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + DoEEffects(tick, flags, a, mod, channel, 0x90|(mod->sngspd/3)); + + return 0; +} + +/*========== Oktalyzer effects */ + +static int DoOktArp(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + UBYTE dat, dat2; + + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + dat2 = UniGetByte(); /* arpeggio style */ + dat = UniGetByte(); + if (!tick) { + if (!dat && (flags & UF_ARPMEM)) + dat=a->arpmem; + else + a->arpmem=dat; + } + if (a->main.period) + DoArpeggio(tick, flags, a, dat2); + + return 0; +} + +/*========== General player functions */ + +static int DoNothing(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel) +{ + (void)tick; /* unused arg */ + (void)flags; /* unused arg */ + (void)a; /* unused arg */ + (void)mod; /* unused arg */ + (void)channel; /* unused arg */ + + UniSkipOpcode(); + + return 0; +} + +typedef int (*effect_func) (UWORD, UWORD, MP_CONTROL *, MODULE *, SWORD); + +static effect_func effects[UNI_LAST] = { + DoNothing, /* 0 */ + DoNothing, /* UNI_NOTE */ + DoNothing, /* UNI_INSTRUMENT */ + DoPTEffect0, /* UNI_PTEFFECT0 */ + DoPTEffect1, /* UNI_PTEFFECT1 */ + DoPTEffect2, /* UNI_PTEFFECT2 */ + DoPTEffect3, /* UNI_PTEFFECT3 */ + DoPTEffect4, /* UNI_PTEFFECT4 */ + DoPTEffect5, /* UNI_PTEFFECT5 */ + DoPTEffect6, /* UNI_PTEFFECT6 */ + DoPTEffect7, /* UNI_PTEFFECT7 */ + DoPTEffect8, /* UNI_PTEFFECT8 */ + DoPTEffect9, /* UNI_PTEFFECT9 */ + DoPTEffectA, /* UNI_PTEFFECTA */ + DoPTEffectB, /* UNI_PTEFFECTB */ + DoPTEffectC, /* UNI_PTEFFECTC */ + DoPTEffectD, /* UNI_PTEFFECTD */ + DoPTEffectE, /* UNI_PTEFFECTE */ + DoPTEffectF, /* UNI_PTEFFECTF */ + DoS3MEffectA, /* UNI_S3MEFFECTA */ + DoS3MEffectD, /* UNI_S3MEFFECTD */ + DoS3MEffectE, /* UNI_S3MEFFECTE */ + DoS3MEffectF, /* UNI_S3MEFFECTF */ + DoS3MEffectI, /* UNI_S3MEFFECTI */ + DoS3MEffectQ, /* UNI_S3MEFFECTQ */ + DoS3MEffectR, /* UNI_S3MEFFECTR */ + DoS3MEffectT, /* UNI_S3MEFFECTT */ + DoS3MEffectU, /* UNI_S3MEFFECTU */ + DoKeyOff, /* UNI_KEYOFF */ + DoKeyFade, /* UNI_KEYFADE */ + DoVolEffects, /* UNI_VOLEFFECTS */ + DoPTEffect4, /* UNI_XMEFFECT4 */ + DoXMEffect6, /* UNI_XMEFFECT6 */ + DoXMEffectA, /* UNI_XMEFFECTA */ + DoXMEffectE1, /* UNI_XMEFFECTE1 */ + DoXMEffectE2, /* UNI_XMEFFECTE2 */ + DoXMEffectEA, /* UNI_XMEFFECTEA */ + DoXMEffectEB, /* UNI_XMEFFECTEB */ + DoXMEffectG, /* UNI_XMEFFECTG */ + DoXMEffectH, /* UNI_XMEFFECTH */ + DoXMEffectL, /* UNI_XMEFFECTL */ + DoXMEffectP, /* UNI_XMEFFECTP */ + DoXMEffectX1, /* UNI_XMEFFECTX1 */ + DoXMEffectX2, /* UNI_XMEFFECTX2 */ + DoITEffectG, /* UNI_ITEFFECTG */ + DoITEffectH, /* UNI_ITEFFECTH */ + DoITEffectI, /* UNI_ITEFFECTI */ + DoITEffectM, /* UNI_ITEFFECTM */ + DoITEffectN, /* UNI_ITEFFECTN */ + DoITEffectP, /* UNI_ITEFFECTP */ + DoITEffectT, /* UNI_ITEFFECTT */ + DoITEffectU, /* UNI_ITEFFECTU */ + DoITEffectW, /* UNI_ITEFFECTW */ + DoITEffectY, /* UNI_ITEFFECTY */ + DoNothing, /* UNI_ITEFFECTZ */ + DoITEffectS0, /* UNI_ITEFFECTS0 */ + DoULTEffect9, /* UNI_ULTEFFECT9 */ + DoMEDSpeed, /* UNI_MEDSPEED */ + DoMEDEffectF1, /* UNI_MEDEFFECTF1 */ + DoMEDEffectF2, /* UNI_MEDEFFECTF2 */ + DoMEDEffectF3, /* UNI_MEDEFFECTF3 */ + DoOktArp, /* UNI_OKTARP */ +}; + +static int pt_playeffects(MODULE *mod, SWORD channel, MP_CONTROL *a) +{ + UWORD tick = mod->vbtick; + UWORD flags = mod->flags; + UBYTE c; + int explicitslides = 0; + effect_func f; + + while((c=UniGetByte())) { + f = effects[c]; + if (f != DoNothing) + a->sliding = 0; + explicitslides |= f(tick, flags, a, mod, channel); + } + return explicitslides; +} + +static void DoNNAEffects(MODULE *mod, MP_CONTROL *a, UBYTE dat) +{ + int t; + MP_VOICE *aout; + + dat&=0xf; + aout=(a->slave)?a->slave:NULL; + + switch (dat) { + case 0x0: /* past note cut */ + for (t=0;t<md_sngchn;t++) + if (mod->voice[t].master==a) + mod->voice[t].main.fadevol=0; + break; + case 0x1: /* past note off */ + for (t=0;t<md_sngchn;t++) + if (mod->voice[t].master==a) { + mod->voice[t].main.keyoff|=KEY_OFF; + if ((!(mod->voice[t].venv.flg & EF_ON))|| + (mod->voice[t].venv.flg & EF_LOOP)) + mod->voice[t].main.keyoff=KEY_KILL; + } + break; + case 0x2: /* past note fade */ + for (t=0;t<md_sngchn;t++) + if (mod->voice[t].master==a) + mod->voice[t].main.keyoff|=KEY_FADE; + break; + case 0x3: /* set NNA note cut */ + a->main.nna=(a->main.nna&~NNA_MASK)|NNA_CUT; + break; + case 0x4: /* set NNA note continue */ + a->main.nna=(a->main.nna&~NNA_MASK)|NNA_CONTINUE; + break; + case 0x5: /* set NNA note off */ + a->main.nna=(a->main.nna&~NNA_MASK)|NNA_OFF; + break; + case 0x6: /* set NNA note fade */ + a->main.nna=(a->main.nna&~NNA_MASK)|NNA_FADE; + break; + case 0x7: /* disable volume envelope */ + if (aout) + aout->main.volflg&=~EF_ON; + break; + case 0x8: /* enable volume envelope */ + if (aout) + aout->main.volflg|=EF_ON; + break; + case 0x9: /* disable panning envelope */ + if (aout) + aout->main.panflg&=~EF_ON; + break; + case 0xa: /* enable panning envelope */ + if (aout) + aout->main.panflg|=EF_ON; + break; + case 0xb: /* disable pitch envelope */ + if (aout) + aout->main.pitflg&=~EF_ON; + break; + case 0xc: /* enable pitch envelope */ + if (aout) + aout->main.pitflg|=EF_ON; + break; + } +} + +void pt_UpdateVoices(MODULE *mod, int max_volume) +{ + SWORD envpan,envvol,envpit,channel; + UWORD playperiod; + SLONG vibval,vibdpt; + ULONG tmpvol; + + MP_VOICE *aout; + INSTRUMENT *i; + SAMPLE *s; + + mod->totalchn=mod->realchn=0; + for (channel=0;channel<md_sngchn;channel++) { + aout=&mod->voice[channel]; + i=aout->main.i; + s=aout->main.s; + + if (!s || !s->length) continue; + + if (aout->main.period<40) + aout->main.period=40; + else if (aout->main.period>50000) + aout->main.period=50000; + + if ((aout->main.kick==KICK_NOTE)||(aout->main.kick==KICK_KEYOFF)) { + Voice_Play_internal(channel,s,(aout->main.start==-1)? + ((s->flags&SF_UST_LOOP)?s->loopstart:0):aout->main.start); + aout->main.fadevol=32768; + aout->aswppos=0; + } + + envvol = 256; + envpan = PAN_CENTER; + envpit = 32; + if (i && ((aout->main.kick==KICK_NOTE)||(aout->main.kick==KICK_ENV))) { + if (aout->main.volflg & EF_ON) + envvol = StartEnvelope(&aout->venv,aout->main.volflg, + i->volpts,i->volsusbeg,i->volsusend, + i->volbeg,i->volend,i->volenv,aout->main.keyoff); + if (aout->main.panflg & EF_ON) + envpan = StartEnvelope(&aout->penv,aout->main.panflg, + i->panpts,i->pansusbeg,i->pansusend, + i->panbeg,i->panend,i->panenv,aout->main.keyoff); + if (aout->main.pitflg & EF_ON) + envpit = StartEnvelope(&aout->cenv,aout->main.pitflg, + i->pitpts,i->pitsusbeg,i->pitsusend, + i->pitbeg,i->pitend,i->pitenv,aout->main.keyoff); + + if (aout->cenv.flg & EF_ON) + aout->masterperiod=GetPeriod(mod->flags, + (UWORD)aout->main.note<<1, aout->master->speed); + } else { + if (aout->main.volflg & EF_ON) + envvol = ProcessEnvelope(aout,&aout->venv,256); + if (aout->main.panflg & EF_ON) + envpan = ProcessEnvelope(aout,&aout->penv,PAN_CENTER); + if (aout->main.pitflg & EF_ON) + envpit = ProcessEnvelope(aout,&aout->cenv,32); + } + aout->main.kick=KICK_ABSENT; + + tmpvol = aout->main.fadevol; /* max 32768 */ + tmpvol *= aout->main.chanvol; /* * max 64 */ + tmpvol *= aout->main.outvolume; /* * max 256 */ + tmpvol /= (256 * 64); /* tmpvol is max 32768 again */ + aout->totalvol = tmpvol >> 2; /* used to determine samplevolume */ + tmpvol *= envvol; /* * max 256 */ + tmpvol *= mod->volume; /* * max 128 */ + tmpvol /= (128 * 256 * 128); + + /* fade out */ + if (mod->sngpos>=mod->numpos) + tmpvol=0; + else + tmpvol=(tmpvol*max_volume)/128; + + if ((aout->masterchn!=-1)&& mod->control[aout->masterchn].muted) + Voice_SetVolume_internal(channel,0); + else { + Voice_SetVolume_internal(channel,tmpvol); + if ((tmpvol)&&(aout->master)&&(aout->master->slave==aout)) + mod->realchn++; + mod->totalchn++; + } + + if (aout->main.panning==PAN_SURROUND) + Voice_SetPanning_internal(channel,PAN_SURROUND); + else + if ((mod->panflag)&&(aout->penv.flg & EF_ON)) + Voice_SetPanning_internal(channel, + DoPan(envpan,aout->main.panning)); + else + Voice_SetPanning_internal(channel,aout->main.panning); + + if (aout->main.period && s->vibdepth) + switch (s->vibtype) { + case 0: + vibval=avibtab[s->avibpos&127]; + if (aout->avibpos & 0x80) vibval=-vibval; + break; + case 1: + vibval=64; + if (aout->avibpos & 0x80) vibval=-vibval; + break; + case 2: + vibval=63-(((aout->avibpos+128)&255)>>1); + break; + default: + vibval=(((aout->avibpos+128)&255)>>1)-64; + break; + } + else + vibval=0; + + if (s->vibflags & AV_IT) { + if ((aout->aswppos>>8)<s->vibdepth) { + aout->aswppos += s->vibsweep; + vibdpt=aout->aswppos; + } else + vibdpt=s->vibdepth<<8; + vibval=(vibval*vibdpt)>>16; + if (aout->mflag) { + if (!(mod->flags&UF_LINEAR)) vibval>>=1; + aout->main.period-=vibval; + } + } else { + /* do XM style auto-vibrato */ + if (!(aout->main.keyoff & KEY_OFF)) { + if (aout->aswppos<s->vibsweep) { + vibdpt=(aout->aswppos*s->vibdepth)/s->vibsweep; + aout->aswppos++; + } else + vibdpt=s->vibdepth; + } else { + /* keyoff -> depth becomes 0 if final depth wasn't reached or + stays at final level if depth WAS reached */ + if (aout->aswppos>=s->vibsweep) + vibdpt=s->vibdepth; + else + vibdpt=0; + } + vibval=(vibval*vibdpt)>>8; + aout->main.period-=vibval; + } + + /* update vibrato position */ + aout->avibpos=(aout->avibpos+s->vibrate)&0xff; + + /* process pitch envelope */ + playperiod=aout->main.period; + + if ((aout->main.pitflg&EF_ON)&&(envpit!=32)) { + long p1; + + envpit-=32; + if ((aout->main.note<<1)+envpit<=0) envpit=-(aout->main.note<<1); + + p1=GetPeriod(mod->flags, ((UWORD)aout->main.note<<1)+envpit, + aout->master->speed)-aout->masterperiod; + if (p1>0) { + if ((UWORD)(playperiod+p1)<=playperiod) { + p1=0; + aout->main.keyoff|=KEY_OFF; + } + } else if (p1<0) { + if ((UWORD)(playperiod+p1)>=playperiod) { + p1=0; + aout->main.keyoff|=KEY_OFF; + } + } + playperiod+=p1; + } + + if (!aout->main.fadevol) { /* check for a dead note (fadevol=0) */ + Voice_Stop_internal(channel); + mod->totalchn--; + if ((tmpvol)&&(aout->master)&&(aout->master->slave==aout)) + mod->realchn--; + } else { + Voice_SetFrequency_internal(channel, + getfrequency(mod->flags,playperiod)); + + /* if keyfade, start substracting fadeoutspeed from fadevol: */ + if ((i)&&(aout->main.keyoff&KEY_FADE)) { + if (aout->main.fadevol>=i->volfade) + aout->main.fadevol-=i->volfade; + else + aout->main.fadevol=0; + } + } + + md_bpm=mod->bpm+mod->relspd; + if (md_bpm<32) + md_bpm=32; + else if ((!(mod->flags&UF_HIGHBPM)) && md_bpm>255) + md_bpm=255; + } +} + +/* Handles new notes or instruments */ +void pt_Notes(MODULE *mod) +{ + SWORD channel; + MP_CONTROL *a; + UBYTE c,inst; + int tr,funky; /* funky is set to indicate note or instrument change */ + + for (channel=0;channel<mod->numchn;channel++) { + a=&mod->control[channel]; + + if (mod->sngpos>=mod->numpos) { + tr=mod->numtrk; + mod->numrow=0; + } else { + tr=mod->patterns[(mod->positions[mod->sngpos]*mod->numchn)+channel]; + mod->numrow=mod->pattrows[mod->positions[mod->sngpos]]; + } + + a->row=(tr<mod->numtrk)?UniFindRow(mod->tracks[tr],mod->patpos):NULL; + a->newsamp=0; + if (!mod->vbtick) a->main.notedelay=0; + + if (!a->row) continue; + UniSetRow(a->row); + funky=0; + + while((c=UniGetByte())) + switch (c) { + case UNI_NOTE: + funky|=1; + a->oldnote=a->anote,a->anote=UniGetByte(); + a->main.kick =KICK_NOTE; + a->main.start=-1; + a->sliding=0; + + /* retrig tremolo and vibrato waves ? */ + if (!(a->wavecontrol & 0x80)) a->trmpos=0; + if (!(a->wavecontrol & 0x08)) a->vibpos=0; + if (!a->panbwave) a->panbpos=0; + break; + case UNI_INSTRUMENT: + inst=UniGetByte(); + if (inst>=mod->numins) break; /* safety valve */ + funky|=2; + a->main.i=(mod->flags & UF_INST)?&mod->instruments[inst]:NULL; + a->retrig=0; + a->s3mtremor=0; + a->ultoffset=0; + a->main.sample=inst; + break; + default: + UniSkipOpcode(); + break; + } + + if (funky) { + INSTRUMENT *i; + SAMPLE *s; + + if ((i=a->main.i)) { + if (i->samplenumber[a->anote] >= mod->numsmp) continue; + s=&mod->samples[i->samplenumber[a->anote]]; + a->main.note=i->samplenote[a->anote]; + } else { + a->main.note=a->anote; + s=&mod->samples[a->main.sample]; + } + + if (a->main.s!=s) { + a->main.s=s; + a->newsamp=a->main.period; + } + + /* channel or instrument determined panning ? */ + a->main.panning=mod->panning[channel]; + if (s->flags & SF_OWNPAN) + a->main.panning=s->panning; + else if ((i)&&(i->flags & IF_OWNPAN)) + a->main.panning=i->panning; + + a->main.handle=s->handle; + a->speed=s->speed; + + if (i) { + if ((mod->panflag)&&(i->flags & IF_PITCHPAN) + &&(a->main.panning!=PAN_SURROUND)){ + a->main.panning+= + ((a->anote-i->pitpancenter)*i->pitpansep)/8; + if (a->main.panning<PAN_LEFT) + a->main.panning=PAN_LEFT; + else if (a->main.panning>PAN_RIGHT) + a->main.panning=PAN_RIGHT; + } + a->main.pitflg=i->pitflg; + a->main.volflg=i->volflg; + a->main.panflg=i->panflg; + a->main.nna=i->nnatype; + a->dca=i->dca; + a->dct=i->dct; + } else { + a->main.pitflg=a->main.volflg=a->main.panflg=0; + a->main.nna=a->dca=0; + a->dct=DCT_OFF; + } + + if (funky&2) /* instrument change */ { + /* IT random volume variations: 0:8 bit fixed, and one bit for + sign. */ + a->volume=a->tmpvolume=s->volume; + if ((s)&&(i)) { + if (i->rvolvar) { + a->volume=a->tmpvolume=s->volume+ + ((s->volume*((SLONG)i->rvolvar*(SLONG)getrandom(512) + ))/25600); + if (a->volume<0) + a->volume=a->tmpvolume=0; + else if (a->volume>64) + a->volume=a->tmpvolume=64; + } + if ((mod->panflag)&&(a->main.panning!=PAN_SURROUND)) { + a->main.panning+=((a->main.panning*((SLONG)i->rpanvar* + (SLONG)getrandom(512)))/25600); + if (a->main.panning<PAN_LEFT) + a->main.panning=PAN_LEFT; + else if (a->main.panning>PAN_RIGHT) + a->main.panning=PAN_RIGHT; + } + } + } + + a->wantedperiod=a->tmpperiod= + GetPeriod(mod->flags, (UWORD)a->main.note<<1,a->speed); + a->main.keyoff=KEY_KICK; + } + } +} + +/* Handles effects */ +void pt_EffectsPass1(MODULE *mod) +{ + SWORD channel; + MP_CONTROL *a; + MP_VOICE *aout; + int explicitslides; + + for (channel=0;channel<mod->numchn;channel++) { + a=&mod->control[channel]; + + if ((aout=a->slave)) { + a->main.fadevol=aout->main.fadevol; + a->main.period=aout->main.period; + if (a->main.kick==KICK_KEYOFF) + a->main.keyoff=aout->main.keyoff; + } + + if (!a->row) continue; + UniSetRow(a->row); + + a->ownper=a->ownvol=0; + explicitslides = pt_playeffects(mod, channel, a); + + /* continue volume slide if necessary for XM and IT */ + if (mod->flags&UF_BGSLIDES) { + if (!explicitslides && a->sliding) + DoS3MVolSlide(mod->vbtick, mod->flags, a, 0); + else if (a->tmpvolume) + a->sliding = explicitslides; + } + + if (!a->ownper) + a->main.period=a->tmpperiod; + if (!a->ownvol) + a->volume=a->tmpvolume; + + if (a->main.s) { + if (a->main.i) + a->main.outvolume= + (a->volume*a->main.s->globvol*a->main.i->globvol)>>10; + else + a->main.outvolume=(a->volume*a->main.s->globvol)>>4; + if (a->main.outvolume>256) + a->main.outvolume=256; + else if (a->main.outvolume<0) + a->main.outvolume=0; + } + } +} + +/* NNA management */ +void pt_NNA(MODULE *mod) +{ + SWORD channel; + MP_CONTROL *a; + + for (channel=0;channel<mod->numchn;channel++) { + a=&mod->control[channel]; + + if (a->main.kick==KICK_NOTE) { + BOOL kill=0; + + if (a->slave) { + MP_VOICE *aout; + + aout=a->slave; + if (aout->main.nna & NNA_MASK) { + /* Make sure the old MP_VOICE channel knows it has no + master now ! */ + a->slave=NULL; + /* assume the channel is taken by NNA */ + aout->mflag=0; + + switch (aout->main.nna) { + case NNA_CONTINUE: /* continue note, do nothing */ + break; + case NNA_OFF: /* note off */ + aout->main.keyoff|=KEY_OFF; + if ((!(aout->main.volflg & EF_ON))|| + (aout->main.volflg & EF_LOOP)) + aout->main.keyoff=KEY_KILL; + break; + case NNA_FADE: + aout->main.keyoff |= KEY_FADE; + break; + } + } + } + + if (a->dct!=DCT_OFF) { + int t; + + for (t=0;t<md_sngchn;t++) + if ((!Voice_Stopped_internal(t))&& + (mod->voice[t].masterchn==channel)&& + (a->main.sample==mod->voice[t].main.sample)) { + kill=0; + switch (a->dct) { + case DCT_NOTE: + if (a->main.note==mod->voice[t].main.note) + kill=1; + break; + case DCT_SAMPLE: + if (a->main.handle==mod->voice[t].main.handle) + kill=1; + break; + case DCT_INST: + kill=1; + break; + } + if (kill) + switch (a->dca) { + case DCA_CUT: + mod->voice[t].main.fadevol=0; + break; + case DCA_OFF: + mod->voice[t].main.keyoff|=KEY_OFF; + if ((!(mod->voice[t].main.volflg&EF_ON))|| + (mod->voice[t].main.volflg&EF_LOOP)) + mod->voice[t].main.keyoff=KEY_KILL; + break; + case DCA_FADE: + mod->voice[t].main.keyoff|=KEY_FADE; + break; + } + } + } + } /* if (a->main.kick==KICK_NOTE) */ + } +} + +/* Setup module and NNA voices */ +void pt_SetupVoices(MODULE *mod) +{ + SWORD channel; + MP_CONTROL *a; + MP_VOICE *aout; + + for (channel=0;channel<mod->numchn;channel++) { + a=&mod->control[channel]; + + if (a->main.notedelay) continue; + if (a->main.kick==KICK_NOTE) { + /* if no channel was cut above, find an empty or quiet channel + here */ + if (mod->flags&UF_NNA) { + if (!a->slave) { + int newchn; + + if ((newchn=MP_FindEmptyChannel(mod))!=-1) + a->slave=&mod->voice[a->slavechn=newchn]; + } + } else + a->slave=&mod->voice[a->slavechn=channel]; + + /* assign parts of MP_VOICE only done for a KICK_NOTE */ + if ((aout=a->slave)) { + if (aout->mflag && aout->master) aout->master->slave=NULL; + aout->master=a; + a->slave=aout; + aout->masterchn=channel; + aout->mflag=1; + } + } else + aout=a->slave; + + if (aout) + aout->main=a->main; + a->main.kick=KICK_ABSENT; + } +} + +/* second effect pass */ +void pt_EffectsPass2(MODULE *mod) +{ + SWORD channel; + MP_CONTROL *a; + UBYTE c; + + for (channel=0;channel<mod->numchn;channel++) { + a=&mod->control[channel]; + + if (!a->row) continue; + UniSetRow(a->row); + + while((c=UniGetByte())) + if (c==UNI_ITEFFECTS0) { + c=UniGetByte(); + if ((c>>4)==SS_S7EFFECTS) + DoNNAEffects(mod, a, c&0xf); + } else + UniSkipOpcode(); + } +} + +void Player_HandleTick(void) +{ + SWORD channel; + int max_volume; + +#if 0 + /* don't handle the very first ticks, this allows the other hardware to + settle down so we don't loose any starting notes */ + if (isfirst) { + isfirst--; + return; + } +#endif + + if ((!pf)||(pf->forbid)||(pf->sngpos>=pf->numpos)) return; + + /* update time counter (sngtime is in milliseconds (in fact 2^-10)) */ + pf->sngremainder+=(1<<9)*5; /* thus 2.5*(1<<10), since fps=0.4xtempo */ + pf->sngtime+=pf->sngremainder/pf->bpm; + pf->sngremainder%=pf->bpm; + + if (++pf->vbtick>=pf->sngspd) { + if (pf->pat_repcrazy) + pf->pat_repcrazy=0; /* play 2 times row 0 */ + else + pf->patpos++; + pf->vbtick=0; + + /* process pattern-delay. pf->patdly2 is the counter and pf->patdly is + the command memory. */ + if (pf->patdly) + pf->patdly2=pf->patdly,pf->patdly=0; + if (pf->patdly2) { + /* patterndelay active */ + if (--pf->patdly2) + /* so turn back pf->patpos by 1 */ + if (pf->patpos) pf->patpos--; + } + + /* do we have to get a new patternpointer ? (when pf->patpos reaches the + pattern size, or when a patternbreak is active) */ + if (((pf->patpos>=pf->numrow)&&(pf->numrow>0))&&(!pf->posjmp)) + pf->posjmp=3; + + if (pf->posjmp) { + pf->patpos=pf->numrow?(pf->patbrk%pf->numrow):0; + pf->pat_repcrazy=0; + pf->sngpos+=(pf->posjmp-2); + for (channel=0;channel<pf->numchn;channel++) + pf->control[channel].pat_reppos=-1; + + pf->patbrk=pf->posjmp=0; + /* handle the "---" (end of song) pattern since it can occur + *inside* the module in some formats */ + if ((pf->sngpos>=pf->numpos)|| + (pf->positions[pf->sngpos]==LAST_PATTERN)) { + if (!pf->wrap) return; + if (!(pf->sngpos=pf->reppos)) { + pf->volume=pf->initvolume>128?128:pf->initvolume; + if(pf->initspeed!=0) + pf->sngspd=pf->initspeed<32?pf->initspeed:32; + else + pf->sngspd=6; + pf->bpm=pf->inittempo<32?32:pf->inittempo; + } + } + if (pf->sngpos<0) pf->sngpos=pf->numpos-1; + } + + if (!pf->patdly2) + pt_Notes(pf); + } + + /* Fade global volume if enabled and we're playing the last pattern */ + if (((pf->sngpos==pf->numpos-1)|| + (pf->positions[pf->sngpos+1]==LAST_PATTERN))&& + (pf->fadeout)) + max_volume=pf->numrow?((pf->numrow-pf->patpos)*128)/pf->numrow:0; + else + max_volume=128; + + pt_EffectsPass1(pf); + if (pf->flags&UF_NNA) + pt_NNA(pf); + pt_SetupVoices(pf); + pt_EffectsPass2(pf); + + /* now set up the actual hardware channel playback information */ + pt_UpdateVoices(pf, max_volume); +} + +static void Player_Init_internal(MODULE* mod) +{ + int t; + + for (t=0;t<mod->numchn;t++) { + mod->control[t].main.chanvol=mod->chanvol[t]; + mod->control[t].main.panning=mod->panning[t]; + } + + mod->sngtime=0; + mod->sngremainder=0; + + mod->pat_repcrazy=0; + mod->sngpos=0; + if(mod->initspeed!=0) + mod->sngspd=mod->initspeed<32?mod->initspeed:32; + else + mod->sngspd=6; + mod->volume=mod->initvolume>128?128:mod->initvolume; + + mod->vbtick=mod->sngspd; + mod->patdly=0; + mod->patdly2=0; + mod->bpm=mod->inittempo<32?32:mod->inittempo; + mod->realchn=0; + + mod->patpos=0; + mod->posjmp=2; /* make sure the player fetches the first note */ + mod->numrow=-1; + mod->patbrk=0; +} + +BOOL Player_Init(MODULE* mod) +{ + mod->extspd=1; + mod->panflag=1; + mod->wrap=0; + mod->loop=1; + mod->fadeout=0; + + mod->relspd=0; + + /* make sure the player doesn't start with garbage */ + if (!(mod->control=(MP_CONTROL*)MikMod_calloc(mod->numchn,sizeof(MP_CONTROL)))) + return 1; + if (!(mod->voice=(MP_VOICE*)MikMod_calloc(md_sngchn,sizeof(MP_VOICE)))) + return 1; + + Player_Init_internal(mod); + return 0; +} + +void Player_Exit_internal(MODULE* mod) +{ + if (!mod) + return; + + /* Stop playback if necessary */ + if (mod==pf) { + Player_Stop_internal(); + pf=NULL; + } + + if (mod->control) + MikMod_free(mod->control); + if (mod->voice) + MikMod_free(mod->voice); + mod->control=NULL; + mod->voice=NULL; +} + +void Player_Exit(MODULE* mod) +{ + MUTEX_LOCK(vars); + Player_Exit_internal(mod); + MUTEX_UNLOCK(vars); +} + +MIKMODAPI void Player_SetVolume(SWORD volume) +{ + MUTEX_LOCK(vars); + if (pf) + pf->volume=(volume<0)?0:(volume>128)?128:volume; + MUTEX_UNLOCK(vars); +} + +MIKMODAPI MODULE* Player_GetModule(void) +{ + MODULE* result; + + MUTEX_LOCK(vars); + result=pf; + MUTEX_UNLOCK(vars); + + return result; +} + +MIKMODAPI void Player_Start(MODULE *mod) +{ + int t; + + if (!mod) + return; + + if (!MikMod_Active()) + MikMod_EnableOutput(); + + mod->forbid=0; + + MUTEX_LOCK(vars); + if (pf!=mod) { + /* new song is being started, so completely stop out the old one. */ + if (pf) pf->forbid=1; + for (t=0;t<md_sngchn;t++) Voice_Stop_internal(t); + } + pf=mod; + MUTEX_UNLOCK(vars); +} + +void Player_Stop_internal(void) +{ + if (!md_sfxchn) MikMod_DisableOutput_internal(); + if (pf) pf->forbid=1; + pf=NULL; +} + +MIKMODAPI void Player_Stop(void) +{ + MUTEX_LOCK(vars); + Player_Stop_internal(); + MUTEX_UNLOCK(vars); +} + +MIKMODAPI BOOL Player_Active(void) +{ + BOOL result=0; + + MUTEX_LOCK(vars); + if (pf) + result=(!(pf->sngpos>=pf->numpos)); + MUTEX_UNLOCK(vars); + + return result; +} + +MIKMODAPI void Player_NextPosition(void) +{ + MUTEX_LOCK(vars); + if (pf) { + int t; + + pf->forbid=1; + pf->posjmp=3; + pf->patbrk=0; + pf->vbtick=pf->sngspd; + + for (t=0;t<md_sngchn;t++) { + Voice_Stop_internal(t); + pf->voice[t].main.i=NULL; + pf->voice[t].main.s=NULL; + } + for (t=0;t<pf->numchn;t++) { + pf->control[t].main.i=NULL; + pf->control[t].main.s=NULL; + } + pf->forbid=0; + } + MUTEX_UNLOCK(vars); +} + +MIKMODAPI void Player_PrevPosition(void) +{ + MUTEX_LOCK(vars); + if (pf) { + int t; + + pf->forbid=1; + pf->posjmp=1; + pf->patbrk=0; + pf->vbtick=pf->sngspd; + + for (t=0;t<md_sngchn;t++) { + Voice_Stop_internal(t); + pf->voice[t].main.i=NULL; + pf->voice[t].main.s=NULL; + } + for (t=0;t<pf->numchn;t++) { + pf->control[t].main.i=NULL; + pf->control[t].main.s=NULL; + } + pf->forbid=0; + } + MUTEX_UNLOCK(vars); +} + +MIKMODAPI void Player_SetPosition(UWORD pos) +{ + MUTEX_LOCK(vars); + if (pf) { + int t; + + pf->forbid=1; + if (pos>=pf->numpos) pos=pf->numpos; + pf->posjmp=2; + pf->patbrk=0; + pf->sngpos=pos; + pf->vbtick=pf->sngspd; + + for (t=0;t<md_sngchn;t++) { + Voice_Stop_internal(t); + pf->voice[t].main.i=NULL; + pf->voice[t].main.s=NULL; + } + for (t=0;t<pf->numchn;t++) { + pf->control[t].main.i=NULL; + pf->control[t].main.s=NULL; + } + pf->forbid=0; + + if (!pos) + Player_Init_internal(pf); + } + MUTEX_UNLOCK(vars); +} + +static void Player_Unmute_internal(SLONG arg1,va_list ap) +{ + SLONG t,arg2,arg3=0; + + if (pf) { + switch (arg1) { + case MUTE_INCLUSIVE: + if (((!(arg2=va_arg(ap,SLONG)))&&(!(arg3=va_arg(ap,SLONG))))|| + (arg2>arg3)||(arg3>=pf->numchn)) + return; + for (;arg2<pf->numchn && arg2<=arg3;arg2++) + pf->control[arg2].muted=0; + break; + case MUTE_EXCLUSIVE: + if (((!(arg2=va_arg(ap,SLONG)))&&(!(arg3=va_arg(ap,SLONG))))|| + (arg2>arg3)||(arg3>=pf->numchn)) + return; + for (t=0;t<pf->numchn;t++) { + if ((t>=arg2) && (t<=arg3)) + continue; + pf->control[t].muted=0; + } + break; + default: + if (arg1<pf->numchn) pf->control[arg1].muted=0; + break; + } + } +} + +MIKMODAPI void Player_Unmute(SLONG arg1, ...) +{ + va_list args; + + va_start(args,arg1); + MUTEX_LOCK(vars); + Player_Unmute_internal(arg1,args); + MUTEX_UNLOCK(vars); + va_end(args); +} + +static void Player_Mute_internal(SLONG arg1,va_list ap) +{ + SLONG t,arg2,arg3=0; + + if (pf) { + switch (arg1) { + case MUTE_INCLUSIVE: + if (((!(arg2=va_arg(ap,SLONG)))&&(!(arg3=va_arg(ap,SLONG))))|| + (arg2>arg3)||(arg3>=pf->numchn)) + return; + for (;arg2<pf->numchn && arg2<=arg3;arg2++) + pf->control[arg2].muted=1; + break; + case MUTE_EXCLUSIVE: + if (((!(arg2=va_arg(ap,SLONG)))&&(!(arg3=va_arg(ap,SLONG))))|| + (arg2>arg3)||(arg3>=pf->numchn)) + return; + for (t=0;t<pf->numchn;t++) { + if ((t>=arg2) && (t<=arg3)) + continue; + pf->control[t].muted=1; + } + break; + default: + if (arg1<pf->numchn) + pf->control[arg1].muted=1; + break; + } + } +} + +MIKMODAPI void Player_Mute(SLONG arg1,...) +{ + va_list args; + + va_start(args,arg1); + MUTEX_LOCK(vars); + Player_Mute_internal(arg1,args); + MUTEX_UNLOCK(vars); + va_end(args); +} + +static void Player_ToggleMute_internal(SLONG arg1,va_list ap) +{ + SLONG arg2,arg3=0; + SLONG t; + + if (pf) { + switch (arg1) { + case MUTE_INCLUSIVE: + if (((!(arg2=va_arg(ap,SLONG)))&&(!(arg3=va_arg(ap,SLONG))))|| + (arg2>arg3)||(arg3>=pf->numchn)) + return; + for (;arg2<pf->numchn && arg2<=arg3;arg2++) + pf->control[arg2].muted=1-pf->control[arg2].muted; + break; + case MUTE_EXCLUSIVE: + if (((!(arg2=va_arg(ap,SLONG)))&&(!(arg3=va_arg(ap,SLONG))))|| + (arg2>arg3)||(arg3>=pf->numchn)) + return; + for (t=0;t<pf->numchn;t++) { + if ((t>=arg2) && (t<=arg3)) + continue; + pf->control[t].muted=1-pf->control[t].muted; + } + break; + default: + if (arg1<pf->numchn) + pf->control[arg1].muted=1-pf->control[arg1].muted; + break; + } + } +} + +MIKMODAPI void Player_ToggleMute(SLONG arg1,...) +{ + va_list args; + + va_start(args,arg1); + MUTEX_LOCK(vars); + Player_ToggleMute_internal(arg1,args); + MUTEX_UNLOCK(vars); + va_end(args); +} + +MIKMODAPI BOOL Player_Muted(UBYTE chan) +{ + BOOL result=1; + + MUTEX_LOCK(vars); + if (pf) + result=(chan<pf->numchn)?pf->control[chan].muted:1; + MUTEX_UNLOCK(vars); + + return result; +} + +MIKMODAPI int Player_GetChannelVoice(UBYTE chan) +{ + int result=0; + + MUTEX_LOCK(vars); + if (pf) + result=(chan<pf->numchn)?pf->control[chan].slavechn:-1; + MUTEX_UNLOCK(vars); + + return result; +} + +MIKMODAPI UWORD Player_GetChannelPeriod(UBYTE chan) +{ + UWORD result=0; + + MUTEX_LOCK(vars); + if (pf) + result=(chan<pf->numchn)?pf->control[chan].main.period:0; + MUTEX_UNLOCK(vars); + + return result; +} + +BOOL Player_Paused_internal(void) +{ + return pf?pf->forbid:1; +} + +MIKMODAPI BOOL Player_Paused(void) +{ + BOOL result; + + MUTEX_LOCK(vars); + result=Player_Paused_internal(); + MUTEX_UNLOCK(vars); + + return result; +} + +MIKMODAPI void Player_TogglePause(void) +{ + MUTEX_LOCK(vars); + if (pf) + pf->forbid=1-pf->forbid; + MUTEX_UNLOCK(vars); +} + +MIKMODAPI void Player_SetSpeed(UWORD speed) +{ + MUTEX_LOCK(vars); + if (pf) + pf->sngspd=speed?(speed<32?speed:32):1; + MUTEX_UNLOCK(vars); +} + +MIKMODAPI void Player_SetTempo(UWORD tempo) +{ + if (tempo<32) tempo=32; + MUTEX_LOCK(vars); + if (pf) { + if ((!(pf->flags&UF_HIGHBPM))&&(tempo>255)) tempo=255; + pf->bpm=tempo; + } + MUTEX_UNLOCK(vars); +} + +/* ex:set ts=4: */ |