--- /dev/null
+/* MikMod sound library\r
+ (c) 1998, 1999, 2000, 2001, 2002 Miodrag Vallat and others - see file\r
+ AUTHORS for complete list.\r
+\r
+ This library is free software; you can redistribute it and/or modify\r
+ it under the terms of the GNU Library General Public License as\r
+ published by the Free Software Foundation; either version 2 of\r
+ the License, or (at your option) any later version.\r
+ \r
+ This program is distributed in the hope that it will be useful,\r
+ but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ GNU Library General Public License for more details.\r
+ \r
+ You should have received a copy of the GNU Library General Public\r
+ License along with this library; if not, write to the Free Software\r
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA\r
+ 02111-1307, USA.\r
+*/\r
+\r
+/*==============================================================================\r
+\r
+ $Id: load_ult.c,v 1.1.1.1 2004/01/21 01:36:35 raph Exp $\r
+\r
+ Ultratracker (ULT) module loader\r
+\r
+==============================================================================*/\r
+\r
+#ifdef HAVE_CONFIG_H\r
+#include "config.h"\r
+#endif\r
+\r
+#ifdef HAVE_UNISTD_H\r
+#include <unistd.h>\r
+#endif\r
+\r
+#include <stdio.h>\r
+#ifdef HAVE_MEMORY_H\r
+#include <memory.h>\r
+#endif\r
+#include <string.h>\r
+\r
+#include "mikmod_internals.h"\r
+\r
+#ifdef SUNOS\r
+extern int fprintf(FILE *, const char *, ...);\r
+#endif\r
+\r
+/*========== Module structure */\r
+\r
+/* header */\r
+typedef struct ULTHEADER {\r
+ CHAR id[16];\r
+ CHAR songtitle[32];\r
+ UBYTE reserved;\r
+} ULTHEADER;\r
+\r
+/* sample information */\r
+typedef struct ULTSAMPLE {\r
+ CHAR samplename[32];\r
+ CHAR dosname[12];\r
+ SLONG loopstart;\r
+ SLONG loopend;\r
+ SLONG sizestart;\r
+ SLONG sizeend;\r
+ UBYTE volume;\r
+ UBYTE flags;\r
+ UWORD speed;\r
+ SWORD finetune;\r
+} ULTSAMPLE;\r
+\r
+typedef struct ULTEVENT {\r
+ UBYTE note,sample,eff,dat1,dat2;\r
+} ULTEVENT;\r
+\r
+/*========== Loader variables */\r
+\r
+#define ULTS_16BITS 4\r
+#define ULTS_LOOP 8\r
+#define ULTS_REVERSE 16\r
+\r
+#define ULT_VERSION_LEN 18\r
+static CHAR ULT_Version[ULT_VERSION_LEN]="Ultra Tracker v1.x";\r
+\r
+static ULTEVENT ev;\r
+\r
+/*========== Loader code */\r
+\r
+BOOL ULT_Test(void)\r
+{\r
+ CHAR id[16];\r
+\r
+ if(!_mm_read_string(id,15,modreader)) return 0;\r
+ if(strncmp(id,"MAS_UTrack_V00",14)) return 0;\r
+ if((id[14]<'1')||(id[14]>'4')) return 0;\r
+ return 1;\r
+}\r
+\r
+BOOL ULT_Init(void)\r
+{\r
+ return 1;\r
+}\r
+\r
+void ULT_Cleanup(void)\r
+{\r
+}\r
+\r
+static UBYTE ReadUltEvent(ULTEVENT* event)\r
+{\r
+ UBYTE flag,rep=1;\r
+\r
+ flag = _mm_read_UBYTE(modreader);\r
+ if(flag==0xfc) {\r
+ rep = _mm_read_UBYTE(modreader);\r
+ event->note =_mm_read_UBYTE(modreader);\r
+ } else\r
+ event->note = flag;\r
+\r
+ event->sample =_mm_read_UBYTE(modreader);\r
+ event->eff =_mm_read_UBYTE(modreader);\r
+ event->dat1 =_mm_read_UBYTE(modreader);\r
+ event->dat2 =_mm_read_UBYTE(modreader);\r
+\r
+ return rep;\r
+}\r
+\r
+BOOL ULT_Load(BOOL curious)\r
+{\r
+ int t,u,tracks=0;\r
+ SAMPLE *q;\r
+ ULTSAMPLE s;\r
+ ULTHEADER mh;\r
+ UBYTE nos,noc,nopa;\r
+ (void)curious;\r
+\r
+ /* try to read module header */\r
+ _mm_read_string(mh.id,15,modreader);\r
+ _mm_read_string(mh.songtitle,32,modreader);\r
+ mh.reserved=_mm_read_UBYTE(modreader);\r
+\r
+ if(_mm_eof(modreader)) {\r
+ _mm_errno = MMERR_LOADING_HEADER;\r
+ return 0;\r
+ }\r
+\r
+ ULT_Version[ULT_VERSION_LEN-1]='3'+(mh.id[14]-'1');\r
+ of.modtype = DupStr(ULT_Version,ULT_VERSION_LEN,1);\r
+ of.initspeed = 6;\r
+ of.inittempo = 125;\r
+ of.reppos = 0;\r
+\r
+ /* read songtext */\r
+ if ((mh.id[14]>'1')&&(mh.reserved))\r
+ if(!ReadLinedComment(mh.reserved * 32, 32)) return 0;\r
+\r
+ nos=_mm_read_UBYTE(modreader);\r
+ if(_mm_eof(modreader)) {\r
+ _mm_errno = MMERR_LOADING_HEADER;\r
+ return 0;\r
+ }\r
+\r
+ of.songname=DupStr(mh.songtitle,32,1);\r
+ of.numins=of.numsmp=nos;\r
+\r
+ if(!AllocSamples()) return 0;\r
+ q = of.samples;\r
+ for(t=0;t<nos;t++) {\r
+ /* try to read sample info */\r
+ _mm_read_string(s.samplename,32,modreader);\r
+ _mm_read_string(s.dosname,12,modreader);\r
+ s.loopstart =_mm_read_I_ULONG(modreader);\r
+ s.loopend =_mm_read_I_ULONG(modreader);\r
+ s.sizestart =_mm_read_I_ULONG(modreader);\r
+ s.sizeend =_mm_read_I_ULONG(modreader);\r
+ s.volume =_mm_read_UBYTE(modreader);\r
+ s.flags =_mm_read_UBYTE(modreader);\r
+ s.speed =(mh.id[14]>='4')?_mm_read_I_UWORD(modreader):8363;\r
+ s.finetune =_mm_read_I_SWORD(modreader);\r
+\r
+ if(_mm_eof(modreader)) {\r
+ _mm_errno = MMERR_LOADING_SAMPLEINFO;\r
+ return 0;\r
+ }\r
+\r
+ q->samplename=DupStr(s.samplename,32,1);\r
+ /* The correct formula for the coefficient would be\r
+ pow(2,(double)s.finetume/OCTAVE/32768), but to avoid floating point\r
+ here, we'll use a first order approximation here.\r
+ 1/567290 == Ln(2)/OCTAVE/32768 */\r
+ q->speed=s.speed+s.speed*(((SLONG)s.speed*(SLONG)s.finetune)/567290);\r
+ q->length = s.sizeend-s.sizestart;\r
+ q->volume = s.volume>>2;\r
+ q->loopstart = s.loopstart;\r
+ q->loopend = s.loopend;\r
+ q->flags = SF_SIGNED;\r
+ if(s.flags&ULTS_LOOP) q->flags|=SF_LOOP;\r
+ if(s.flags&ULTS_16BITS) {\r
+ s.sizeend+=(s.sizeend-s.sizestart);\r
+ s.sizestart<<=1;\r
+ q->flags|=SF_16BITS;\r
+ q->loopstart>>=1;\r
+ q->loopend>>=1;\r
+ }\r
+ q++;\r
+ }\r
+\r
+ if(!AllocPositions(256)) return 0;\r
+ for(t=0;t<256;t++)\r
+ of.positions[t]=_mm_read_UBYTE(modreader);\r
+ for(t=0;t<256;t++)\r
+ if(of.positions[t]==255) {\r
+ of.positions[t]=LAST_PATTERN;\r
+ break;\r
+ }\r
+ of.numpos=t;\r
+\r
+ noc=_mm_read_UBYTE(modreader);\r
+ nopa=_mm_read_UBYTE(modreader);\r
+\r
+ of.numchn=++noc;\r
+ of.numpat=++nopa;\r
+ of.numtrk=of.numchn*of.numpat;\r
+ if(!AllocTracks()) return 0;\r
+ if(!AllocPatterns()) return 0;\r
+ for(u=0;u<of.numchn;u++)\r
+ for(t=0;t<of.numpat;t++)\r
+ of.patterns[(t*of.numchn)+u]=tracks++;\r
+\r
+ /* read pan position table for v1.5 and higher */\r
+ if(mh.id[14]>='3') {\r
+ for(t=0;t<of.numchn;t++) of.panning[t]=_mm_read_UBYTE(modreader)<<4;\r
+ of.flags |= UF_PANNING;\r
+ }\r
+\r
+ for(t=0;t<of.numtrk;t++) {\r
+ int rep,row=0;\r
+\r
+ UniReset();\r
+ while(row<64) {\r
+ rep=ReadUltEvent(&ev);\r
+\r
+ if(_mm_eof(modreader)) {\r
+ _mm_errno = MMERR_LOADING_TRACK;\r
+ return 0;\r
+ }\r
+\r
+ while(rep--) {\r
+ UBYTE eff;\r
+ int offset;\r
+\r
+ if(ev.sample) UniInstrument(ev.sample-1);\r
+ if(ev.note) UniNote(ev.note+2*OCTAVE-1);\r
+\r
+ /* first effect - various fixes by Alexander Kerkhove and\r
+ Thomas Neumann */\r
+ eff = ev.eff>>4;\r
+ switch(eff) {\r
+ case 0x3: /* tone portamento */\r
+ UniEffect(UNI_ITEFFECTG,ev.dat2);\r
+ break;\r
+ case 0x5:\r
+ break;\r
+ case 0x9: /* sample offset */\r
+ offset=(ev.dat2<<8)|((ev.eff&0xf)==9?ev.dat1:0);\r
+ UniEffect(UNI_ULTEFFECT9,offset);\r
+ break;\r
+ case 0xb: /* panning */\r
+ UniPTEffect(8,ev.dat2*0xf);\r
+ of.flags |= UF_PANNING;\r
+ break;\r
+ case 0xc: /* volume */\r
+ UniPTEffect(eff,ev.dat2>>2);\r
+ break;\r
+ default:\r
+ UniPTEffect(eff,ev.dat2);\r
+ break;\r
+ }\r
+\r
+ /* second effect */\r
+ eff=ev.eff&0xf;\r
+ switch(eff) {\r
+ case 0x3: /* tone portamento */\r
+ UniEffect(UNI_ITEFFECTG,ev.dat1);\r
+ break;\r
+ case 0x5:\r
+ break;\r
+ case 0x9: /* sample offset */\r
+ if((ev.eff>>4)!=9)\r
+ UniEffect(UNI_ULTEFFECT9,((UWORD)ev.dat1)<<8);\r
+ break;\r
+ case 0xb: /* panning */\r
+ UniPTEffect(8,ev.dat1*0xf);\r
+ of.flags |= UF_PANNING;\r
+ break;\r
+ case 0xc: /* volume */\r
+ UniPTEffect(eff,ev.dat1>>2);\r
+ break;\r
+ default:\r
+ UniPTEffect(eff,ev.dat1);\r
+ break;\r
+ }\r
+\r
+ UniNewline();\r
+ row++;\r
+ }\r
+ }\r
+ if(!(of.tracks[t]=UniDup())) return 0;\r
+ }\r
+ return 1;\r
+}\r
+\r
+CHAR *ULT_LoadTitle(void)\r
+{\r
+ CHAR s[32];\r
+\r
+ _mm_fseek(modreader,15,SEEK_SET);\r
+ if(!_mm_read_UBYTES(s,32,modreader)) return NULL;\r
+\r
+ return(DupStr(s,32,1));\r
+}\r
+\r
+/*========== Loader information */\r
+\r
+MIKMODAPI MLOADER load_ult={\r
+ NULL,\r
+ "ULT",\r
+ "ULT (UltraTracker)",\r
+ ULT_Init,\r
+ ULT_Test,\r
+ ULT_Load,\r
+ ULT_Cleanup,\r
+ ULT_LoadTitle\r
+};\r
+\r
+\r
+/* ex:set ts=4: */\r
projects / mikmod-rockbox.git / blobdiff