load_far.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_far.c,v 1.1.1.1 2004/01/21 01:36:35 raph Exp $
- Farandole (FAR) 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 */
- typedef struct FARHEADER1 {
- UBYTE id[4]; /* file magic */
- CHAR songname[40]; /* songname */
- CHAR blah[3]; /* 13,10,26 */
- UWORD headerlen; /* remaining length of header in bytes */
- UBYTE version;
- UBYTE onoff[16];
- UBYTE edit1[9];
- UBYTE speed;
- UBYTE panning[16];
- UBYTE edit2[4];
- UWORD stlen;
- } FARHEADER1;
- typedef struct FARHEADER2 {
- UBYTE orders[256];
- UBYTE numpat;
- UBYTE snglen;
- UBYTE loopto;
- UWORD patsiz[256];
- } FARHEADER2;
- typedef struct FARSAMPLE {
- CHAR samplename[32];
- ULONG length;
- UBYTE finetune;
- UBYTE volume;
- ULONG reppos;
- ULONG repend;
- UBYTE type;
- UBYTE loop;
- } FARSAMPLE;
- typedef struct FARNOTE {
- UBYTE note,ins,vol,eff;
- } FARNOTE;
- /*========== Loader variables */
- static CHAR FAR_Version[] = "Farandole";
- static FARHEADER1 *mh1 = NULL;
- static FARHEADER2 *mh2 = NULL;
- static FARNOTE *pat = NULL;
- static unsigned char FARSIG[4+3]={'F','A','R',0xfe,13,10,26};
- /*========== Loader code */
- BOOL FAR_Test(void)
- {
- UBYTE id[47];
- if(!_mm_read_UBYTES(id,47,modreader)) return 0;
- if((memcmp(id,FARSIG,4))||(memcmp(id+44,FARSIG+4,3))) return 0;
- return 1;
- }
- BOOL FAR_Init(void)
- {
- if(!(mh1 = (FARHEADER1*)_mm_malloc(sizeof(FARHEADER1)))) return 0;
- if(!(mh2 = (FARHEADER2*)_mm_malloc(sizeof(FARHEADER2)))) return 0;
- if(!(pat = (FARNOTE*)_mm_malloc(256*16*4*sizeof(FARNOTE)))) return 0;
- return 1;
- }
- void FAR_Cleanup(void)
- {
- _mm_free(mh1);
- _mm_free(mh2);
- _mm_free(pat);
- }
- static UBYTE *FAR_ConvertTrack(FARNOTE* n,int rows)
- {
- int t,vibdepth=1;
- UniReset();
- for(t=0;t<rows;t++) {
- if(n->note) {
- UniInstrument(n->ins);
- UniNote(n->note+3*OCTAVE-1);
- }
- if (n->vol&0xf) UniPTEffect(0xc,(n->vol&0xf)<<2);
- if (n->eff)
- switch(n->eff>>4) {
- case 0x3: /* porta to note */
- UniPTEffect(0x3,(n->eff&0xf)<<4);
- break;
- case 0x4: /* retrigger */
- UniPTEffect(0x0e, 0x90 | (n->eff & 0x0f));
- break;
- case 0x5: /* set vibrato depth */
- vibdepth=n->eff&0xf;
- break;
- case 0x6: /* vibrato */
- UniPTEffect(0x4,((n->eff&0xf)<<4)|vibdepth);
- break;
- case 0x7: /* volume slide up */
- UniPTEffect(0xa,(n->eff&0xf)<<4);
- break;
- case 0x8: /* volume slide down */
- UniPTEffect(0xa,n->eff&0xf);
- break;
- case 0xb: /* panning */
- UniPTEffect(0xe,0x80|(n->eff&0xf));
- break;
- case 0xf: /* set speed */
- UniPTEffect(0xf,n->eff&0xf);
- break;
- /* others not yet implemented */
- default:
- #ifdef MIKMOD_DEBUG
- fprintf(stderr,"rFAR: unsupported effect %02Xn",n->eff);
- #endif
- break;
- }
- UniNewline();
- n+=16;
- }
- return UniDup();
- }
- BOOL FAR_Load(BOOL curious)
- {
- int t,u,tracks=0;
- SAMPLE *q;
- FARSAMPLE s;
- FARNOTE *crow;
- UBYTE smap[8];
- /* try to read module header (first part) */
- _mm_read_UBYTES(mh1->id,4,modreader);
- _mm_read_SBYTES(mh1->songname,40,modreader);
- _mm_read_SBYTES(mh1->blah,3,modreader);
- mh1->headerlen = _mm_read_I_UWORD (modreader);
- mh1->version = _mm_read_UBYTE (modreader);
- _mm_read_UBYTES(mh1->onoff,16,modreader);
- _mm_read_UBYTES(mh1->edit1,9,modreader);
- mh1->speed = _mm_read_UBYTE(modreader);
- _mm_read_UBYTES(mh1->panning,16,modreader);
- _mm_read_UBYTES(mh1->edit2,4,modreader);
- mh1->stlen = _mm_read_I_UWORD (modreader);
- /* init modfile data */
- of.modtype = strdup(FAR_Version);
- of.songname = DupStr(mh1->songname,40,1);
- of.numchn = 16;
- of.initspeed = mh1->speed;
- of.inittempo = 80;
- of.reppos = 0;
- of.flags |= UF_PANNING;
- for(t=0;t<16;t++) of.panning[t]=mh1->panning[t]<<4;
- /* read songtext into comment field */
- if(mh1->stlen)
- if (!ReadLinedComment(mh1->stlen, 66)) return 0;
- /* try to read module header (second part) */
- _mm_read_UBYTES(mh2->orders,256,modreader);
- mh2->numpat = _mm_read_UBYTE(modreader);
- mh2->snglen = _mm_read_UBYTE(modreader);
- mh2->loopto = _mm_read_UBYTE(modreader);
- _mm_read_I_UWORDS(mh2->patsiz,256,modreader);
- of.numpos = mh2->snglen;
- if(!AllocPositions(of.numpos)) return 0;
- for(t=0;t<of.numpos;t++) {
- if(mh2->orders[t]==0xff) break;
- of.positions[t] = mh2->orders[t];
- }
- /* count number of patterns stored in file */
- of.numpat = 0;
- for(t=0;t<256;t++)
- if(mh2->patsiz[t])
- if((t+1)>of.numpat) of.numpat=t+1;
- of.numtrk = of.numpat*of.numchn;
- /* seek across eventual new data */
- _mm_fseek(modreader,mh1->headerlen-(869+mh1->stlen),SEEK_CUR);
- /* alloc track and pattern structures */
- if(!AllocTracks()) return 0;
- if(!AllocPatterns()) return 0;
- for(t=0;t<of.numpat;t++) {
- UBYTE rows=0,tempo;
- memset(pat,0,256*16*4*sizeof(FARNOTE));
- if(mh2->patsiz[t]) {
- rows = _mm_read_UBYTE(modreader);
- tempo = _mm_read_UBYTE(modreader);
- crow = pat;
- /* file often allocates 64 rows even if there are less in pattern */
- if (mh2->patsiz[t]<2+(rows*16*4)) {
- _mm_errno = MMERR_LOADING_PATTERN;
- return 0;
- }
- for(u=(mh2->patsiz[t]-2)/4;u;u--,crow++) {
- crow->note = _mm_read_UBYTE(modreader);
- crow->ins = _mm_read_UBYTE(modreader);
- crow->vol = _mm_read_UBYTE(modreader);
- crow->eff = _mm_read_UBYTE(modreader);
- }
- if(_mm_eof(modreader)) {
- _mm_errno = MMERR_LOADING_PATTERN;
- return 0;
- }
- crow=pat;
- of.pattrows[t] = rows;
- for(u=16;u;u--,crow++)
- if(!(of.tracks[tracks++]=FAR_ConvertTrack(crow,rows))) {
- _mm_errno=MMERR_LOADING_PATTERN;
- return 0;
- }
- } else
- tracks+=16;
- }
- /* read sample map */
- if(!_mm_read_UBYTES(smap,8,modreader)) {
- _mm_errno = MMERR_LOADING_HEADER;
- return 0;
- }
- /* count number of samples used */
- of.numins = 0;
- for(t=0;t<64;t++)
- if(smap[t>>3]&(1<<(t&7))) of.numins=t+1;
- of.numsmp = of.numins;
- /* alloc sample structs */
- if(!AllocSamples()) return 0;
- q = of.samples;
- for(t=0;t<of.numsmp;t++) {
- q->speed = 8363;
- q->flags = SF_SIGNED;
- if(smap[t>>3]&(1<<(t&7))) {
- _mm_read_SBYTES(s.samplename,32,modreader);
- s.length = _mm_read_I_ULONG(modreader);
- s.finetune = _mm_read_UBYTE(modreader);
- s.volume = _mm_read_UBYTE(modreader);
- s.reppos = _mm_read_I_ULONG(modreader);
- s.repend = _mm_read_I_ULONG(modreader);
- s.type = _mm_read_UBYTE(modreader);
- s.loop = _mm_read_UBYTE(modreader);
- q->samplename = DupStr(s.samplename,32,1);
- q->length = s.length;
- q->loopstart = s.reppos;
- q->loopend = s.repend;
- q->volume = s.volume<<2;
- if(s.type&1) q->flags|=SF_16BITS;
- if(s.loop&8) q->flags|=SF_LOOP;
- q->seekpos = _mm_ftell(modreader);
- _mm_fseek(modreader,q->length,SEEK_CUR);
- } else
- q->samplename = DupStr(NULL,0,0);
- q++;
- }
- return 1;
- }
- CHAR *FAR_LoadTitle(void)
- {
- CHAR s[40];
- _mm_fseek(modreader,4,SEEK_SET);
- if(!_mm_read_UBYTES(s,40,modreader)) return NULL;
- return(DupStr(s,40,1));
- }
- /*========== Loader information */
- MIKMODAPI MLOADER load_far={
- NULL,
- "FAR",
- "FAR (Farandole Composer)",
- FAR_Init,
- FAR_Test,
- FAR_Load,
- FAR_Cleanup,
- FAR_LoadTitle
- };
- /* ex:set ts=4: */