--- /dev/null
+/* 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 */
+MODULE *pf = NULL;
+
+#define NUMVOICES(mod) (md_sngchn < (mod)->numvoices ? md_sngchn : (mod)->numvoices)
+
+#define HIGH_OCTAVE 2 /* number of above-range octaves */
+
+static const 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 const 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 const 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 const 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 const 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 const 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 ceilval)
+{
+#if defined(HAVE_SRANDOM) && !defined(_MIKMOD_AMIGA)
+ return random()&(ceilval-1);
+#else
+ return (rand()*ceilval)/(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<NUMVOICES(mod);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<NUMVOICES(mod);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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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 */
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+ /* cancel the FT2 pattern loop (E60) bug.
+ * also see DoEEffects() below for it. */
+ if (flags & UF_FT2QUIRKS) mod->patbrk=0;
+ }
+
+ return 0;
+}
+
+static int DoPTEffectC(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel)
+{
+ UBYTE dat;
+
+ 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;
+
+ 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) */
+ /* emulate the FT2 pattern loop (E60) bug:
+ * http://milkytracker.org/docs/MilkyTracker.html#fxE6x
+ * roadblas.xm plays correctly with this. */
+ if (flags & UF_FT2QUIRKS) mod->patbrk=mod->patpos;
+ }
+ 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;
+
+ 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;
+
+ 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)
+{
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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 */
+
+ 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;
+
+ 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 */
+
+ 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)
+{
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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)
+{
+ 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;
+
+ 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;
+
+ dat=UniGetByte();
+ if ((!tick)&&(a->main.i)) {
+ UWORD points;
+ INSTRUMENT *i=a->main.i;
+ MP_VOICE *aout;
+
+ if ((aout=a->slave) != NULL) {
+ 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;
+
+ 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;
+
+ 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;
+
+ 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)
+{
+ 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)
+{
+ DoITVibrato(tick, a, UniGetByte());
+
+ return 0;
+}
+
+static int DoITEffectI(UWORD tick, UWORD flags, MP_CONTROL *a, MODULE *mod, SWORD channel)
+{
+ UBYTE inf, on, off;
+
+ 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)
+{
+ 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;
+
+ 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;
+
+ 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;
+
+ 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 */
+
+ 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;
+
+ 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 */
+
+
+ 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;
+
+ 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();
+
+ 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();
+
+ 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;
+
+ 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)
+{
+ 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()) != 0) {
+#if 0 /* this doesn't normally happen unless things go fubar elsewhere */
+ if (c >= UNI_LAST)
+ fprintf(stderr,"fubar'ed opcode %u\n",c);
+#endif
+ 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<NUMVOICES(mod);t++)
+ if (mod->voice[t].master==a)
+ mod->voice[t].main.fadevol=0;
+ break;
+ case 0x1: /* past note off */
+ for (t=0;t<NUMVOICES(mod);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<NUMVOICES(mod);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;
+ }
+}
+
+static 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<NUMVOICES(mod);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);
+ }
+ if (aout->main.kick == KICK_NOTE) {
+ aout->main.kick_flag = 1;
+ }
+ 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 */
+static 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()) != 0)
+ 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) != NULL) {
+ 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 */
+static 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) != NULL) {
+ 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 */
+static 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<NUMVOICES(mod);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 */
+static 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) != NULL) {
+ 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 */
+static 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()) != 0)
+ 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;
+
+ if (pf->sngpos<0) pf->sngpos=(SWORD)(pf->numpos-1);
+
+ /* 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->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;
+}
+
+int 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;
+
+ /* mod->numvoices was used during loading to clamp md_sngchn.
+ After loading it's used to remember how big mod->voice is.
+ */
+ mod->numvoices = md_sngchn;
+
+ 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;
+ }
+
+ MikMod_free(mod->control);
+ 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;
+ pf->initvolume=pf->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<NUMVOICES(pf);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<NUMVOICES(pf);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<NUMVOICES(pf);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;
+ ULONG 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);
+}
+
+MIKMODAPI int Player_QueryVoices(UWORD numvoices, VOICEINFO *vinfo)
+{
+ int i;
+
+ if (numvoices > md_sngchn)
+ numvoices = md_sngchn;
+
+ MUTEX_LOCK(vars);
+ if (pf)
+ for (i = 0; i < md_sngchn; i++) {
+ vinfo [i].i = pf->voice[i].main.i;
+ vinfo [i].s = pf->voice[i].main.s;
+ vinfo [i].panning = pf->voice [i].main.panning;
+ vinfo [i].volume = pf->voice [i].main.chanvol;
+ vinfo [i].period = pf->voice [i].main.period;
+ vinfo [i].kick = pf->voice [i].main.kick_flag;
+ pf->voice [i].main.kick_flag = 0;
+ }
+ MUTEX_UNLOCK(vars);
+
+ return numvoices;
+}
+
+/* Get current module order */
+MIKMODAPI int Player_GetOrder(void)
+{
+ int ret;
+ MUTEX_LOCK(vars);
+ ret = pf ? pf->sngpos :0; /* pf->positions[pf->sngpos ? pf->sngpos-1 : 0]: 0; */
+ MUTEX_UNLOCK(vars);
+ return ret;
+}
+
+/* Get current module row */
+MIKMODAPI int Player_GetRow(void)
+{
+ int ret;
+ MUTEX_LOCK(vars);
+ ret = pf ? pf->patpos : 0;
+ MUTEX_UNLOCK(vars);
+ return ret;
+}
+
+/* ex:set ts=4: */
projects / dosdemo / blobdiff