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WiiFlow_Lite/portlibs/sources/libmodplay/source/xm.c
fix94.1 82d67b6413 mirrored wiiflow r417
2012-01-21 20:57:41 +00:00

770 lines
20 KiB
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/*
* Copyright (c) 2002, 2003, 2004, 2005, 2007 by Christian Nowak <chnowak@web.de>
* Last update: 20th October, 2007
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "modplay.h"
#include "effects.h"
#include "xm.h"
#define DESCRIPTION "Triton FastTracker II Extended Module"
#define AUTHOR "Christian Nowak <chnowak@web.de>, http://chn.roarvgm.com/"
#define VERSION "v0.01b"
#define COPYRIGHT "Copyright (c) 2003, 2007"
#define SAFE_MALLOC(dest, a) \
dest = malloc(a); \
if (dest == NULL) { \
MODFILE_Free(xm); \
return -2; \
}
static int xmfinetab[] = {
7893, 7897, 7900, 7904, 7907, 7911, 7915, 7918, 7922, 7925, 7929, 7932, 7936, 7940, 7943, 7947,
7950, 7954, 7958, 7961, 7965, 7968, 7972, 7975, 7979, 7983, 7986, 7990, 7993, 7997, 8001, 8004,
8008, 8012, 8015, 8019, 8022, 8026, 8030, 8033, 8037, 8041, 8044, 8048, 8051, 8055, 8059, 8062,
8066, 8070, 8073, 8077, 8081, 8084, 8088, 8091, 8095, 8099, 8102, 8106, 8110, 8113, 8117, 8121,
8124, 8128, 8132, 8135, 8139, 8143, 8146, 8150, 8154, 8157, 8161, 8165, 8169, 8172, 8176, 8180,
8183, 8187, 8191, 8194, 8198, 8202, 8205, 8209, 8213, 8217, 8220, 8224, 8228, 8231, 8235, 8239,
8243, 8246, 8250, 8254, 8257, 8261, 8265, 8269, 8272, 8276, 8280, 8284, 8287, 8291, 8295, 8299,
8302, 8306, 8310, 8314, 8317, 8321, 8325, 8329, 8332, 8336, 8340, 8344, 8347, 8351, 8355, 8359,
8363, 8366, 8370, 8374, 8378, 8381, 8385, 8389, 8393, 8397, 8400, 8404, 8408, 8412, 8416, 8419,
8423, 8427, 8431, 8435, 8438, 8442, 8446, 8450, 8454, 8457, 8461, 8465, 8469, 8473, 8476, 8480,
8484, 8488, 8492, 8496, 8499, 8503, 8507, 8511, 8515, 8519, 8523, 8526, 8530, 8534, 8538, 8542,
8546, 8549, 8553, 8557, 8561, 8565, 8569, 8573, 8577, 8580, 8584, 8588, 8592, 8596, 8600, 8604,
8608, 8611, 8615, 8619, 8623, 8627, 8631, 8635, 8639, 8643, 8646, 8650, 8654, 8658, 8662, 8666,
8670, 8674, 8678, 8682, 8686, 8690, 8693, 8697, 8701, 8705, 8709, 8713, 8717, 8721, 8725, 8729,
8733, 8737, 8741, 8745, 8749, 8752, 8756, 8760, 8764, 8768, 8772, 8776, 8780, 8784, 8788, 8792,
8796, 8800, 8804, 8808, 8812, 8816, 8820, 8824, 8828, 8832, 8836, 8840, 8844, 8848, 8852, 8856
};
static u32 getu32(u8 *d) {
return d[0] | (d[1] << 8) | (d[2] << 16) | (d[3] << 24);
}
static u16 getu16(u8 *d) {
return d[0] | (d[1] << 8);
}
static int xmgetfinefreq(int fine) {
/* double fact = pow(2.0, 2.0 / 12.0);*/
return xmfinetab[fine + 128];
/* return (int)(8363.0 * pow(fact, (double)fine / (double)steps));*/
/*return 8363;*/
}
static void convertXMVolume(u8 v, u16 *e, u8 *o) {
switch (v >> 4) {
case 0x06: /* Volume slide down */
*e = EFFECT_XMa0;
*o = v & 0x0f;
break;
case 0x07: /* Volume slide up */
*e = EFFECT_XMa0;
*o = (v & 0x0f) << 4;
break;
case 0x08: /* Fine volume slide down */
*e = EFFECT_STeb;
*o = v & 0x0f;
break;
case 0x09: /* Fine volume slide up */
*e = EFFECT_STea;
*o = v & 0x0f;
break;
case 0x0c: /* Set panning */
*e = EFFECT_ST80;
*o = (v & 0x0f) << 4;
break;
case 0x0d: /* Panning slide left */
*e = EFFECT_XM19;
*o = v & 0x0f;
break;
case 0x0e: /* Panning slide right */
*e = EFFECT_XM19;
*o = (v & 0x0f) << 4;
break;
default:
break;
}
}
static void convertXMEffects(MODFILE *mod, int pattern, int pline, u8 effect, u8 operand, u16 *e, u8 *o) {
if ((e == NULL) || (o == NULL))
return;
*o = operand;
switch (effect) {
case 0x00: /* Arpeggio */
if (operand != 0)
*e = EFFECT_ST00;
else
*e = EFFECT_NONE;
break;
case 0x01: /* Porta up */
*e = EFFECT_XM01;
break;
case 0x02: /* Porta down */
*e = EFFECT_XM02;
break;
case 0x03: /* Porta to note */
*e = EFFECT_ST30;
break;
case 0x04: /* Vibrato */
*e = EFFECT_ST40;
break;
case 0x05: /* Porta + volume slide */
*e = EFFECT_ST50;
break;
case 0x06: /* Vibrato + volume slide */
*e = EFFECT_ST60;
break;
case 0x07: /* Tremolo */
*e = EFFECT_ST70;
break;
case 0x08: /* Panning */
*e = EFFECT_ST80;
break;
case 0x09: /* Sample offset */
*e = EFFECT_ST90;
break;
case 0x0a: /* Volume slide */
*e = EFFECT_XMa0;
break;
case 0x0b: /* Pattern jump */
mod->patterns[pattern][(pline * mod->nChannels) + mod->nChannels - 1].effect[0] = EFFECT_STb0;
mod->patterns[pattern][(pline * mod->nChannels) + mod->nChannels - 1].operand[0] = operand;
effect = EFFECT_NONE;
break;
case 0x0c: /* Set volume */
*e = EFFECT_STc0;
if (operand > 64)
operand = 64;
*o = operand;
break;
case 0x0d: /* Pattern break */
operand = ((operand >> 4) * 10) + (operand & 0x0f);
mod->patterns[pattern][(pline * mod->nChannels) + mod->nChannels - 1].effect[0] = EFFECT_STd0;
mod->patterns[pattern][(pline * mod->nChannels) + mod->nChannels - 1].operand[0] = operand;
*e = EFFECT_NONE;
break;
case 0x0e:
switch (operand >> 4) {
int temp;
case 0x01: /* Fine porta up */
*e = EFFECT_STe1;
*o = operand & 0x0f;
break;
case 0x02: /* Fine porta down */
*e = EFFECT_STe2;
*o = operand & 0x0f;
break;
case 0x04: /* Set vibrato waveform */
*e = EFFECT_STe4;
*o = operand & 0x0f;
break;
case 0x05: /* Set finetune */
*e = EFFECT_STe5;
temp = operand & 0x0f;
if (temp > 7) temp -= 16;
temp += 8;
*o = operand & 0x0f;
break;
case 0x06: /* Pattern loop */
operand = operand & 0x0f;
mod->patterns[pattern][(pline * mod->nChannels) + mod->nChannels - 1].effect[0] = EFFECT_STe6;
mod->patterns[pattern][(pline * mod->nChannels) + mod->nChannels - 1].operand[0] = operand;
*e = EFFECT_NONE;
*o = 0;
break;
case 0x07: /* Set tremolo waveform */
*e = EFFECT_STe7;
*o = operand & 0x0f;
break;
case 0x08: /* Panning */
*e = EFFECT_STe8;
*o = operand & 0x0f;
break;
case 0x09: /* Retrig */
*e = EFFECT_STe9;
*o = operand & 0x0f;
break;
case 0x0a: /* Fine volume slide up */
*e = EFFECT_STea;
*o = operand & 0x0f;
break;
case 0x0b: /* Fine volume slide down */
*e = EFFECT_STeb;
*o = operand & 0x0f;
break;
case 0x0c: /* Note cut */
*e = EFFECT_STec;
*o = operand & 0x0f;
break;
case 0x0d: /* Note delay */
*e = EFFECT_STed;
*o = operand & 0x0f;
break;
case 0x0e: /* Pattern delay */
operand = operand & 0x0f;
mod->patterns[pattern][(pline * mod->nChannels) + mod->nChannels - 1].effect[0] = EFFECT_STee;
mod->patterns[pattern][(pline * mod->nChannels) + mod->nChannels - 1].operand[0] = operand;
*e = EFFECT_NONE;
*o = 0;
break;
default:
*e = EFFECT_NONE;
break;
}
break;
case 0x0f: /* Set speed/tempo */
*e = EFFECT_STf0;
break;
case 0x10: /* Global volume */
*e = EFFECT_XM10;
break;
case 0x11: /* Global volume slide */
*e = EFFECT_XM11;
break;
case 0x19: /* Panning slide */
*e = EFFECT_XM19;
break;
default:
*e = EFFECT_NONE;
break;
}
}
int MODFILE_SetXM(u8 *xmfile, int xmlength, MODFILE *xm) {
int ofs = 0;
int bak;
int headersize;
int nSamples = 0;
int i;
int sampleOfs;
if (!MODFILE_IsXM(xmfile, xmlength))
return -1;
memcpy(xm->songname, &xmfile[17], 20);
xm->songname[17] = '\0';
ofs = 60;
headersize = getu32(&xmfile[ofs]);
xm->songlength = getu16(&xmfile[ofs + 4]);
xm->restart_position = getu16(&xmfile[ofs + 6]);
xm->nChannels = getu16(&xmfile[ofs + 8]);
xm->nChannels++;
xm->nPatterns = getu16(&xmfile[ofs + 10]);
xm->nInstruments = getu16(&xmfile[ofs + 12]);
if (getu16(&xmfile[ofs + 14]) & 1)
xm->period_type = 1;
else
xm->period_type = 0;
xm->start_tempo = getu16(&xmfile[ofs + 18]);
xm->start_speed = getu16(&xmfile[ofs + 16]);
memcpy(xm->playlist, &xmfile[ofs + 20], 256);
ofs += headersize;
/* Load patterns */
SAFE_MALLOC(xm->patterns, sizeof(MOD_Note*) * xm->nPatterns);
SAFE_MALLOC(xm->patternLengths, sizeof(int) * xm->nPatterns);
/* xm->patterns = malloc(sizeof(MOD_Note*) * xm->nPatterns);
xm->patternLengths = malloc(sizeof(int) * xm->nPatterns);*/
for (i = 0; i < xm->nPatterns; i++) {
int packedSize;
headersize = getu32(&xmfile[ofs]);
xm->patternLengths[i] = getu16(&xmfile[ofs + 5]);
packedSize = getu16(&xmfile[ofs + 7]);
ofs += headersize;
SAFE_MALLOC(xm->patterns[i], xm->patternLengths[i] * xm->nChannels * sizeof(MOD_Note));
/* xm->patterns[i] = malloc(xm->patternLengths[i] * xm->nChannels * sizeof(MOD_Note));*/
MODFILE_ClearPattern(xm, i);
if (packedSize != 0) { /* There is patterndata */
int ppt = ofs;
int pline, pchannel;
for (pline = 0; pline < xm->patternLengths[i]; pline++) {
for (pchannel = 0; pchannel < xm->nChannels - 1; pchannel++) {
MOD_Note *destNote = &xm->patterns[i][(pline * xm->nChannels) + pchannel];
if (xmfile[ppt] & 0x80) { /* A packed note */
u8 t = xmfile[ppt++];
u8 effect = 0x00;
u8 operand = 0x00;
if (t & 1) {
u8 note = xmfile[ppt++];
if (note == 97) { /* A key off */
destNote->note = 0xfe;
} else {
note--;
destNote->note = ((note / 12) << 4) | (note % 12);
}
}
if (t & 2) {
u8 instrument = xmfile[ppt++];
destNote->instrument = instrument;
}
if (t & 4) {
u8 volume = xmfile[ppt++];
if (volume == 0)
destNote->volume = 0xff;
else
if (volume < 0x10 || volume > 0x50) {
destNote->volume = 0xff;
convertXMVolume(volume, &destNote->effect[0], &destNote->operand[0]);
} else {
destNote->volume = volume - 0x10;
}
}
if (t & 8) {
effect = xmfile[ppt++];
}
if (t & 16) {
operand = xmfile[ppt++];
}
convertXMEffects(xm, i, pline, effect, operand, &destNote->effect[1], &destNote->operand[1]);
} else { /* Not a packed note */
u8 t;
u8 t2;
t = xmfile[ppt++];
if (t == 97) { /* A key off */
destNote->note = 0xfe;
} else {
t--;
destNote->note = ((t / 12) << 4) | (t % 12);
}
destNote->instrument = xmfile[ppt++];
t = xmfile[ppt++];
if (t == 0)
destNote->volume = 0xff;
else
if (t < 0x10 || t > 0x50) {
destNote->volume = 0xff;
convertXMVolume(t, &destNote->effect[0], &destNote->operand[0]);
} else {
destNote->volume = t - 0x10;
}
t = xmfile[ppt++];
t2 = xmfile[ppt++];
convertXMEffects(xm, i, pline, t, t2, &destNote->effect[1], &destNote->operand[1]);
}
}
}
}
ofs += packedSize;
}
/* Calculate number of samples */
bak = ofs;
nSamples = 0;
for (i = 0; i < xm->nInstruments; i++) {
int sheadersize = 0;
int samplesininstr;
int sampledatasize = 0;
headersize = getu32(&xmfile[ofs]);
samplesininstr = getu16(&xmfile[ofs + 27]);
if (samplesininstr > 0)
sheadersize = getu32(&xmfile[ofs + 29]);
ofs += headersize;
if (samplesininstr > 0) {
int j;
nSamples += samplesininstr;
for (j = 0; j < samplesininstr; j++) {
int ssize = getu32(&xmfile[ofs + 0]);
sampledatasize += ssize;
/* if (ssize == 0)
nSamples--;*/
ofs += sheadersize;
}
}
ofs += sampledatasize;
}
ofs = bak;
xm->nSamples = nSamples;
/* Load instruments */
/* xm->samples = malloc(xm->nSamples * sizeof(MOD_Sample));*/
SAFE_MALLOC(xm->samples, xm->nSamples * sizeof(MOD_Sample));
memset(xm->samples, 0, xm->nSamples * sizeof(MOD_Sample));
/* xm->instruments = malloc(xm->nInstruments * sizeof(MOD_Instrument));*/
SAFE_MALLOC(xm->instruments, xm->nInstruments * sizeof(MOD_Instrument));
memset(xm->instruments, 0, xm->nInstruments * sizeof(MOD_Instrument));
sampleOfs = 0;
for (i = 0; i < xm->nInstruments; i++) {
int sheadersize = 0;
int samplesininstr;
int j;
headersize = getu32(&xmfile[ofs]);
samplesininstr = getu16(&xmfile[ofs + 27]);
memcpy(xm->instruments[i].name, &xmfile[ofs + 4], 22);
xm->instruments[i].name[22] = '\0';
/* Instrument note -> Sample note mapping */
for (j = 0; j < 256; j++) {
xm->instruments[i].note[j] = j;
}
/* Sample number for all notes */
for (j = 0; j < 256; j++) {
xm->instruments[i].samples[j] = NULL;
}
if (samplesininstr > 0) {
sheadersize = getu32(&xmfile[ofs + 29]);
/* Volume Fade */
xm->instruments[i].volumeFade = getu16(&xmfile[ofs + 239]);
/* Sample number for all notes */
for (j = 0; j < 96; j++) {
u8 dnote = ((j / 12) << 4) | (j % 12);
xm->instruments[i].samples[dnote] = &xm->samples[(int)(unsigned int)xmfile[ofs + 33 + j] + sampleOfs];
}
/* Volume envelope */
if ((xmfile[ofs + 233] & 1) && (xmfile[ofs + 225] > 0)) {
xm->instruments[i].envVolume.enabled = TRUE;
xm->instruments[i].envVolume.numPoints = xmfile[ofs + 225];
/* Looping */
if (xmfile[ofs + 233] & 4) {
xm->instruments[i].envVolume.loop_start = xmfile[ofs + 228];
xm->instruments[i].envVolume.loop_end = xmfile[ofs + 229];
} else {
xm->instruments[i].envVolume.loop_start = 255;
xm->instruments[i].envVolume.loop_end = 255;
}
/* Sustain */
if (xmfile[ofs + 233] & 2) {
xm->instruments[i].envVolume.sustain = xmfile[ofs + 227];
} else {
xm->instruments[i].envVolume.sustain = 255;
}
/* Envelope points */
xm->instruments[i].envVolume.envPoints = malloc(sizeof(EnvPoint) * (int)xm->instruments[i].envVolume.numPoints);
for (j = 0; j < xm->instruments[i].envVolume.numPoints; j++) {
xm->instruments[i].envVolume.envPoints[j].x = getu16(&xmfile[ofs + 129 + (j * 4)]);
xm->instruments[i].envVolume.envPoints[j].y = getu16(&xmfile[ofs + 129 + (j * 4) + 2]);
}
} else {
xm->instruments[i].envVolume.enabled = FALSE;
}
/* Panning envelope */
if ((xmfile[ofs + 234] & 1) && (xmfile[ofs + 226] > 0)) {
xm->instruments[i].envPanning.enabled = TRUE;
xm->instruments[i].envPanning.numPoints = xmfile[ofs + 226];
/* Looping */
if (xmfile[ofs + 234] & 4) {
xm->instruments[i].envPanning.loop_start = xmfile[ofs + 231];
xm->instruments[i].envPanning.loop_end = xmfile[ofs + 232];
} else {
xm->instruments[i].envPanning.loop_start = 255;
xm->instruments[i].envPanning.loop_end = 255;
}
/* Sustain */
if (xmfile[ofs + 234] & 2) {
xm->instruments[i].envPanning.sustain = xmfile[ofs + 230];
} else {
xm->instruments[i].envPanning.sustain = 255;
}
/* Envelope points */
xm->instruments[i].envPanning.envPoints = malloc(sizeof(EnvPoint) * (int)xm->instruments[i].envPanning.numPoints);
for (j = 0; j < xm->instruments[i].envPanning.numPoints; j++) {
xm->instruments[i].envPanning.envPoints[j].x = getu16(&xmfile[ofs + 177 + (j * 4)]);
xm->instruments[i].envPanning.envPoints[j].y = getu16(&xmfile[ofs + 177 + (j * 4) + 2]);
}
} else {
xm->instruments[i].envPanning.enabled = FALSE;
}
ofs += headersize; /* Go to the sample headers */
/* Read sample headers */
for (j = 0; j < samplesininstr; j++) {
u8 flag = xmfile[ofs + 14];
xm->samples[sampleOfs + j].default_volume = 64;
xm->samples[sampleOfs + j].middle_c =
xm->samples[sampleOfs + j].default_middle_c = xmgetfinefreq((int)(s8)xmfile[ofs + 13]);
xm->samples[sampleOfs + j].finetune = (s8)xmfile[ofs + 13];
xm->samples[sampleOfs + j].panning = xmfile[ofs + 15] >> 2;
xm->samples[sampleOfs + j].default_volume =
xm->samples[sampleOfs + j].volume = xmfile[ofs + 12];
memcpy(xm->samples[sampleOfs + j].name, &xmfile[ofs + 18], 22);
xm->samples[sampleOfs + j].name[22] = '\0';
xm->samples[sampleOfs + j].relative_note = xmfile[ofs + 16];
xm->samples[sampleOfs + j].sampleInfo.length = getu32(&xmfile[ofs + 0]);
xm->samples[sampleOfs + j].sampleInfo.loop_start = getu32(&xmfile[ofs + 4]);
xm->samples[sampleOfs + j].sampleInfo.loop_end = getu32(&xmfile[ofs + 8]);
xm->samples[sampleOfs + j].sampleInfo.stereo = FALSE;
xm->samples[sampleOfs + j].sampleInfo.bit_16 = (flag & 16) != 0;
if (xm->samples[sampleOfs + j].sampleInfo.bit_16) {
xm->samples[sampleOfs + j].sampleInfo.length /= 2;
xm->samples[sampleOfs + j].sampleInfo.loop_start /= 2;
xm->samples[sampleOfs + j].sampleInfo.loop_end /= 2;
}
flag &= 0x03;
if ((flag == 0) || (flag == 3)) {
xm->samples[sampleOfs + j].sampleInfo.looped = FALSE;
xm->samples[sampleOfs + j].sampleInfo.pingpong = FALSE;
} else if (flag == 1) {
xm->samples[sampleOfs + j].sampleInfo.looped = TRUE;
xm->samples[sampleOfs + j].sampleInfo.pingpong = FALSE;
} else if (flag == 2) {
xm->samples[sampleOfs + j].sampleInfo.looped = TRUE;
xm->samples[sampleOfs + j].sampleInfo.pingpong = TRUE;
}
if (xm->samples[sampleOfs + j].sampleInfo.loop_end == 0) {
xm->samples[sampleOfs + j].sampleInfo.looped = FALSE;
xm->samples[sampleOfs + j].sampleInfo.pingpong = FALSE;
}
if (xm->samples[sampleOfs + j].sampleInfo.looped) {
xm->samples[sampleOfs + j].sampleInfo.loop_end +=
xm->samples[sampleOfs + j].sampleInfo.loop_start;
} else {
xm->samples[sampleOfs + j].sampleInfo.loop_start =
xm->samples[sampleOfs + j].sampleInfo.loop_end =
xm->samples[sampleOfs + j].sampleInfo.length - 1;
}
ofs += sheadersize;
} /* for (j = 0; j < samplesininstr; j++) */
/* Read sample data */
for (j = 0; j < samplesininstr; j++) {
if (xm->samples[sampleOfs + j].sampleInfo.length != 0) {
u32 length = xm->samples[sampleOfs + j].sampleInfo.length;
if (xm->samples[sampleOfs + j].sampleInfo.bit_16) {
s16 *d;
s16 old, new;
u32 k;
d = malloc(length * 2);
memcpy(d, &xmfile[ofs], length * 2);
xm->samples[sampleOfs + j].sampleInfo.sampledata = d;
ofs += length * 2;
/* Convert the sampledata */
old = 0;
for (k = 0; k < length; k++) {
new = getu16((u8*)&d[k]) + old;
d[k] = new;
old = new;
}
} else {
s8 * d;
s8 old, new;
u32 k;
d = malloc(length);
memcpy(d, &xmfile[ofs], length);
xm->samples[sampleOfs + j].sampleInfo.sampledata = d;
ofs += length;
/* Convert the sampledata */
old = 0;
for (k = 0; k < length; k++) {
new = d[k] + old;
d[k] = new;
old = new;
}
}
}
}
sampleOfs += samplesininstr;
} else {/* if (samplesininstr > 0) */
ofs += headersize;
}
} /* for (i = 0; i < xm->nInstruments; i++) */
xm->unsigned_samples = FALSE;
xm->master_volume = 64;
xm->filetype = MODULE_XM;
for (i = 0; i < xm->nChannels; i++) {
xm->channels[i].voiceInfo.enabled = TRUE;
xm->channels[i].default_panning = 128;
}
return 0;
}
BOOL MODFILE_IsXM(u8 *xmfile, int xmlength) {
if ((xmfile == NULL) || (xmlength < 1024))
return FALSE;
if (memcmp(&xmfile[0], "Extended Module: ", 17) != 0)
return FALSE;
if (xmfile[37] != 0x1a)
return FALSE;
return TRUE;
}
int MODFILE_XMGetFormatID(void) {
return MODULE_XM;
}
char *MODFILE_XMGetDescription(void) {
return DESCRIPTION;
}
char *MODFILE_XMGetAuthor(void) {
return AUTHOR;
}
char *MODFILE_XMGetVersion(void) {
return VERSION;
}
char *MODFILE_XMGetCopyright(void) {
return COPYRIGHT;
}
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