load_669.c
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:8k
源码类别:
Windows CE
开发平台:
C/C++
- /* MikMod sound library
- (c) 1998, 1999, 2000, 2001, 2002 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: load_669.c,v 1.1.1.1 2004/01/21 01:36:35 raph Exp $
- Composer 669 module loader
- ==============================================================================*/
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
- #ifdef HAVE_UNISTD_H
- #include <unistd.h>
- #endif
- #include <stdio.h>
- #ifdef HAVE_MEMORY_H
- #include <memory.h>
- #endif
- #include <string.h>
- #include "mikmod_internals.h"
- #ifdef SUNOS
- extern int fprintf(FILE *, const char *, ...);
- #endif
- /*========== Module structure */
- /* header */
- typedef struct S69HEADER {
- UBYTE marker[2];
- CHAR message[108];
- UBYTE nos;
- UBYTE nop;
- UBYTE looporder;
- UBYTE orders[0x80];
- UBYTE tempos[0x80];
- UBYTE breaks[0x80];
- } S69HEADER;
- /* sample information */
- typedef struct S69SAMPLE {
- CHAR filename[13];
- SLONG length;
- SLONG loopbeg;
- SLONG loopend;
- } S69SAMPLE;
- /* encoded note */
- typedef struct S69NOTE {
- UBYTE a,b,c;
- } S69NOTE;
- /*========== Loader variables */
- /* current pattern */
- static S69NOTE* s69pat=NULL;
- /* Module header */
- static S69HEADER* mh=NULL;
- /* file type identification */
- static CHAR* S69_Version[]={
- "Composer 669",
- "Extended 669"
- };
- /*========== Loader code */
- BOOL S69_Test(void)
- {
- UBYTE buf[0x80];
- if(!_mm_read_UBYTES(buf,2,modreader))
- return 0;
- /* look for id */
- if(!memcmp(buf,"if",2) || !memcmp(buf,"JN",2)) {
- int i;
- /* skip song message */
- _mm_fseek(modreader,108,SEEK_CUR);
- /* sanity checks */
- if(_mm_read_UBYTE(modreader) > 64) return 0;
- if(_mm_read_UBYTE(modreader) > 128) return 0;
- if(_mm_read_UBYTE(modreader) > 127) return 0;
- /* check order table */
- if(!_mm_read_UBYTES(buf,0x80,modreader)) return 0;
- for(i=0;i<0x80;i++)
- if((buf[i]>=0x80)&&(buf[i]!=0xff)) return 0;
- /* check tempos table */
- if(!_mm_read_UBYTES(buf,0x80,modreader)) return 0;
- for(i=0;i<0x80;i++)
- if((!buf[i])||(buf[i]>32)) return 0;
- /* check pattern length table */
- if(!_mm_read_UBYTES(buf,0x80,modreader)) return 0;
- for(i=0;i<0x80;i++)
- if(buf[i]>0x3f) return 0;
- } else
- return 0;
- return 1;
- }
- BOOL S69_Init(void)
- {
- if(!(s69pat=(S69NOTE *)_mm_malloc(64*8*sizeof(S69NOTE)))) return 0;
- if(!(mh=(S69HEADER *)_mm_malloc(sizeof(S69HEADER)))) return 0;
- return 1;
- }
- void S69_Cleanup(void)
- {
- _mm_free(s69pat);
- _mm_free(mh);
- }
- static BOOL S69_LoadPatterns(void)
- {
- int track,row,channel;
- UBYTE note,inst,vol,effect,lastfx,lastval;
- S69NOTE *cur;
- int tracks=0;
- if(!AllocPatterns()) return 0;
- if(!AllocTracks()) return 0;
- for(track=0;track<of.numpat;track++) {
- /* set pattern break locations */
- of.pattrows[track]=mh->breaks[track]+1;
- /* load the 669 pattern */
- cur=s69pat;
- for(row=0;row<64;row++) {
- for(channel=0;channel<8;channel++,cur++) {
- cur->a = _mm_read_UBYTE(modreader);
- cur->b = _mm_read_UBYTE(modreader);
- cur->c = _mm_read_UBYTE(modreader);
- }
- }
- if(_mm_eof(modreader)) {
- _mm_errno = MMERR_LOADING_PATTERN;
- return 0;
- }
- /* translate the pattern */
- for(channel=0;channel<8;channel++) {
- UniReset();
- /* set pattern tempo */
- UniPTEffect(0xf,78);
- UniPTEffect(0xf,mh->tempos[track]);
- lastfx=0xff,lastval=0;
- for(row=0;row<=mh->breaks[track];row++) {
- int a,b,c;
- /* fetch the encoded note */
- a=s69pat[(row*8)+channel].a;
- b=s69pat[(row*8)+channel].b;
- c=s69pat[(row*8)+channel].c;
- /* decode it */
- note=a>>2;
- inst=((a&0x3)<<4)|((b&0xf0)>>4);
- vol=b&0xf;
- if (a<0xff) {
- if (a<0xfe) {
- UniInstrument(inst);
- UniNote(note+2*OCTAVE);
- lastfx=0xff; /* reset background effect memory */
- }
- UniPTEffect(0xc,vol<<2);
- }
- if ((c!=0xff)||(lastfx!=0xff)) {
- if(c==0xff)
- c=lastfx,effect=lastval;
- else
- effect=c&0xf;
- switch(c>>4) {
- case 0: /* porta up */
- UniPTEffect(0x1,effect);
- lastfx=c,lastval=effect;
- break;
- case 1: /* porta down */
- UniPTEffect(0x2,effect);
- lastfx=c,lastval=effect;
- break;
- case 2: /* porta to note */
- UniPTEffect(0x3,effect);
- lastfx=c,lastval=effect;
- break;
- case 3: /* frequency adjust */
- /* DMP converts this effect to S3M FF1. Why not ? */
- UniEffect(UNI_S3MEFFECTF,0xf0|effect);
- break;
- case 4: /* vibrato */
- UniPTEffect(0x4,effect);
- lastfx=c,lastval=effect;
- break;
- case 5: /* set speed */
- if (effect)
- UniPTEffect(0xf,effect);
- else
- if(mh->marker[0]!=0x69) {
- #ifdef MIKMOD_DEBUG
- fprintf(stderr,"r669: unsupported super fast tempo at pat=%d row=%d chan=%dn",
- track,row,channel);
- #endif
- }
- break;
- }
- }
- UniNewline();
- }
- if(!(of.tracks[tracks++]=UniDup())) return 0;
- }
- }
- return 1;
- }
- BOOL S69_Load(BOOL curious)
- {
- int i;
- SAMPLE *current;
- S69SAMPLE sample;
- /* module header */
- _mm_read_UBYTES(mh->marker,2,modreader);
- _mm_read_UBYTES(mh->message,108,modreader);
- mh->nos=_mm_read_UBYTE(modreader);
- mh->nop=_mm_read_UBYTE(modreader);
- mh->looporder=_mm_read_UBYTE(modreader);
- _mm_read_UBYTES(mh->orders,0x80,modreader);
- for(i=0;i<0x80;i++)
- if ((mh->orders[i]>=0x80)&&(mh->orders[i]!=0xff)) {
- _mm_errno=MMERR_NOT_A_MODULE;
- return 1;
- }
- _mm_read_UBYTES(mh->tempos,0x80,modreader);
- for(i=0;i<0x80;i++)
- if ((!mh->tempos[i])||(mh->tempos[i]>32)) {
- _mm_errno=MMERR_NOT_A_MODULE;
- return 1;
- }
- _mm_read_UBYTES(mh->breaks,0x80,modreader);
- for(i=0;i<0x80;i++)
- if (mh->breaks[i]>0x3f) {
- _mm_errno=MMERR_NOT_A_MODULE;
- return 1;
- }
- /* set module variables */
- of.initspeed=4;
- of.inittempo=78;
- of.songname=DupStr(mh->message,36,1);
- of.modtype=strdup(S69_Version[memcmp(mh->marker,"JN",2)==0]);
- of.numchn=8;
- of.numpat=mh->nop;
- of.numins=of.numsmp=mh->nos;
- of.numtrk=of.numchn*of.numpat;
- of.flags=UF_XMPERIODS|UF_LINEAR;
- for(i= 35;(i>= 0)&&(mh->message[i]==' ');i--) mh->message[i]=0;
- for(i=36+35;(i>=36+0)&&(mh->message[i]==' ');i--) mh->message[i]=0;
- for(i=72+35;(i>=72+0)&&(mh->message[i]==' ');i--) mh->message[i]=0;
- if((mh->message[0])||(mh->message[36])||(mh->message[72]))
- if((of.comment=(CHAR*)_mm_malloc(3*(36+1)+1))) {
- strncpy(of.comment,mh->message,36);
- strcat(of.comment,"r");
- if (mh->message[36]) strncat(of.comment,mh->message+36,36);
- strcat(of.comment,"r");
- if (mh->message[72]) strncat(of.comment,mh->message+72,36);
- strcat(of.comment,"r");
- of.comment[3*(36+1)]=0;
- }
- if(!AllocPositions(0x80)) return 0;
- for(i=0;i<0x80;i++) {
- if(mh->orders[i]>=mh->nop) break;
- of.positions[i]=mh->orders[i];
- }
- of.numpos=i;
- of.reppos=mh->looporder<of.numpos?mh->looporder:0;
- if(!AllocSamples()) return 0;
- current=of.samples;
- for(i=0;i<of.numins;i++) {
- /* sample information */
- _mm_read_UBYTES((UBYTE*)sample.filename,13,modreader);
- sample.length=_mm_read_I_SLONG(modreader);
- sample.loopbeg=_mm_read_I_SLONG(modreader);
- sample.loopend=_mm_read_I_SLONG(modreader);
- if (sample.loopend==0xfffff) sample.loopend=0;
- if((sample.length<0)||(sample.loopbeg<-1)||(sample.loopend<-1)) {
- _mm_errno = MMERR_LOADING_HEADER;
- return 0;
- }
- current->samplename=DupStr(sample.filename,13,1);
- current->seekpos=0;
- current->speed=0;
- current->length=sample.length;
- current->loopstart=sample.loopbeg;
- current->loopend=sample.loopend;
- current->flags=(sample.loopbeg<sample.loopend)?SF_LOOP:0;
- current->volume=64;
- current++;
- }
- if(!S69_LoadPatterns()) return 0;
- return 1;
- }
- CHAR *S69_LoadTitle(void)
- {
- CHAR s[36];
- _mm_fseek(modreader,2,SEEK_SET);
- if(!_mm_read_UBYTES(s,36,modreader)) return NULL;
- return(DupStr(s,36,1));
- }
- /*========== Loader information */
- MIKMODAPI MLOADER load_669={
- NULL,
- "669",
- "669 (Composer 669, Unis 669)",
- S69_Init,
- S69_Test,
- S69_Load,
- S69_Cleanup,
- S69_LoadTitle
- };
- /* ex:set ts=4: */