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p1xl.c
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p1xl.c
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#include "chip.h"
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <math.h>
#include "blip_buf.h"
#include "console.h"
#define PATTERN_LEN 32
#define NUM_CHANNELS 4
enum {
WF_PUL = 0x01,
WF_SAW = 0x02,
WF_TRI = 0x04,
WF_NOI = 0x08,
WF_WAV = 0xF0,
};
struct PatternLine {
u8 note;
u8 instr;
u8 cmd[2];
u8 param[2];
};
struct Pattern {
struct PatternLine line[PATTERN_LEN];
};
struct InstrumentLine {
u8 cmd;
u8 param;
};
struct Instrument {
char name[256];
int length;
struct InstrumentLine line[256];
};
struct SongLine {
u8 track[NUM_CHANNELS];
u8 transp[NUM_CHANNELS];
};
struct VolumeTable {
int length;
u8 column[256];
};
struct DutyTable {
int length;
u8 column[256];
};
struct PanTable {
int length;
u8 column[256];
};
static blip_t *sBlipBuffer[2];
static struct Instrument instrument[256];
static struct Pattern track[256];
static struct SongLine song[256];
static char sFilename[1024];
static int songlen = 1;
static struct VolumeTable volumeTable[16];
static struct DutyTable dutyTable[16];
static struct PanTable panTable[16];
static u8 waveTable[16][32];
static u8 sTempo = 6;
static u8 trackwait;
static u8 trackpos;
static u8 songpos;
static u8 playsong;
static u8 playtrack;
static const u16 waveStep[8 * 12] = {
0x5448, 0x4f8d, 0x4b16, 0x46df, 0x42e5, 0x3f24, 0x3b98, 0x3840,
0x3518, 0x321d, 0x2f4d, 0x2ca5, 0x2a24, 0x27c6, 0x258b, 0x2370,
0x2172, 0x1f92, 0x1dcc, 0x1c20, 0x1a8c, 0x190f, 0x17a7, 0x1653,
0x1512, 0x13e3, 0x12c5, 0x11b8, 0x10b9, 0x0fc9, 0x0ee6, 0x0e10,
0x0d46, 0x0c87, 0x0bd3, 0x0b29, 0x0a89, 0x09f2, 0x0963, 0x08dc,
0x085d, 0x07e4, 0x0773, 0x0708, 0x06a3, 0x0644, 0x05ea, 0x0595,
0x0544, 0x04f9, 0x04b1, 0x046e, 0x042e, 0x03f2, 0x03ba, 0x0384,
0x0351, 0x0322, 0x02f5, 0x02ca, 0x02a2, 0x027c, 0x0259, 0x0237,
0x0217, 0x01f9, 0x01dd, 0x01c2, 0x01a9, 0x0191, 0x017a, 0x0165,
0x0151, 0x013e, 0x012c, 0x011b, 0x010c, 0x00fd, 0x00ee, 0x00e1,
0x00d4, 0x00c8, 0x00bd, 0x00b3, 0x00a9, 0x009f, 0x0096, 0x008e,
0x0086, 0x007e, 0x0077, 0x0071, 0x006a, 0x0064, 0x005f, 0x0059,
};
static const s8 sinetable[] = {
0, 12, 25, 37, 49, 60, 71, 81,
90, 98, 106, 112, 117, 122, 125, 126,
127, 126, 125, 122, 117, 112, 106, 98,
90, 81, 71, 60, 49, 37, 25, 12,
0, -12, -25, -37, -49, -60, -71, -81,
-90, -98, -106, -112, -117, -122, -125, -126,
-127, -126, -125, -122, -117, -112, -106, -98,
-90, -81, -71, -60, -49, -37, -25, -12
};
static volatile struct oscillator {
s32 freq;
u16 phase;
u16 lastPhase;
u16 duty;
u8 waveform;
u8 volume; // 0-255
u8 pan; // 0-16
u32 buzzseed;
s16 lastLeft;
s16 lastRight;
size_t lastTime;
} osc[NUM_CHANNELS];
static struct channel {
u8 tnum;
s8 transp;
u8 tnote;
u8 lastinstr;
u8 inum;
u8 iptr;
u8 iwait;
u8 inote;
s8 bendd;
s16 bend;
s8 volumed;
u8 vdepth;
u8 vrate;
u8 vpos;
s16 inertia;
u16 slur;
u8 volumeTable;
u8 volumeStretch;
u8 volumeStretchCounter;
u8 volumePtr;
u8 dutyTable;
u8 dutyStretch;
u8 dutyStretchCounter;
u8 dutyPtr;
u8 panTable;
u8 panStretch;
u8 panStretchCounter;
u8 panPtr;
u8 filterLow;
u8 filterHigh;
} channel[NUM_CHANNELS];
// FILTER_LENGTH MUST BE ODD
#define FILTER_LENGTH 31
#define SAMPLE_RATE 44100.0
#define CLOCK_RATE (44100.0 * 256.0)
#define SAMPLES_PER_PLAYROUTINE (SAMPLE_RATE / 60)
#define CLOCKS_PER_PLAYROUTINE (CLOCK_RATE / 60)
static float filter_freqKernels[256][FILTER_LENGTH];
static float filter_kernel[NUM_CHANNELS][FILTER_LENGTH];
static float filter_buffer[NUM_CHANNELS][2][FILTER_LENGTH];
static uint_fast16_t filter_bufferPos[NUM_CHANNELS];
void filter_setFreqs(const u8 _channelNum, u8 _low, u8 _high) {
if (_low == 0) {
for (size_t i = 0; i < FILTER_LENGTH; i++) {
filter_kernel[_channelNum][i] = filter_freqKernels[_high][i];
}
} else {
for (size_t i = 0; i < FILTER_LENGTH; i++) {
filter_kernel[_channelNum][i] = filter_freqKernels[_high][i] - filter_freqKernels[_low][i];
}
}
}
void filter_init() {
// Init kernels
for (size_t f = 0; f < 256; f++) {
float filtFreq = 16.42 + pow(1.029410639, 90 + f);
if (f == 255) {
filtFreq = 22050.0;
}
int j = 0;
for (int i = (-(FILTER_LENGTH - 1) / 2); i <= ((FILTER_LENGTH - 1) / 2); i++) {
// const float w = 0.5 * (1.0 - cos(2.0 * M_PI * ((float)j + 1.0) / ((float)FILTER_LENGTH)));
const float w = 0.5 - 0.5 * cos((2.0 * M_PI * ((float) j + 1.0)) / (float) FILTER_LENGTH);
const float b = 2.0 * filtFreq * ((float) i) / SAMPLE_RATE;
const float sinc_b = (b == 0) ? 1.0 : sin(M_PI * b) / (M_PI * b);
const float lowPass = w * (2.0 * filtFreq / SAMPLE_RATE) * sinc_b;
filter_freqKernels[f][j] = lowPass;
j++;
}
}
// Init buffers
for (size_t x = 0; x < NUM_CHANNELS; x++) {
for (size_t y = 0; y < 2; y++) {
for (size_t z = 0; z < FILTER_LENGTH; z++) {
filter_buffer[x][y][z] = 0;
}
}
filter_setFreqs(x, 0, 255);
filter_bufferPos[x] = 0;
}
}
s16 filter_sample(const s16 _input, const u8 _channelNum, const u8 _zeroForLeft) {
float out = 0;
uint_fast16_t *pos = &filter_bufferPos[_channelNum];
float *buf = filter_buffer[_channelNum][_zeroForLeft];
buf[(*pos)++] = _input;
if (*pos == FILTER_LENGTH) {
*pos = 0;
}
for (size_t i = 0; i < FILTER_LENGTH; i++) {
out += buf[(*pos)++] * filter_kernel[_channelNum][i];
if (*pos == FILTER_LENGTH) {
*pos = 0;
}
}
return (s16) out;
}
static void readsong(int pos, int ch, u8 *dest) {
dest[0] = song[pos].track[ch];
dest[1] = song[pos].transp[ch];
}
static void readtrack(int num, int pos, struct PatternLine *tl) {
tl->note = track[num].line[pos].note;
tl->instr = track[num].line[pos].instr;
tl->cmd[0] = track[num].line[pos].cmd[0];
tl->cmd[1] = track[num].line[pos].cmd[1];
tl->param[0] = track[num].line[pos].param[0];
tl->param[1] = track[num].line[pos].param[1];
}
static void readinstr(int num, int pos, u8 *il) {
if (pos >= instrument[num].length) {
il[0] = 0;
il[1] = 0;
} else {
il[0] = instrument[num].line[pos].cmd;
il[1] = instrument[num].line[pos].param;
}
}
static void silence() {
u8 i;
for (i = 0; i < 4; i++) {
osc[i].volume = 0;
channel[i].volumeTable = 0;
channel[i].volumed = 0;
}
playsong = 0;
playtrack = 0;
}
static void runcmd(u8 ch, u8 cmd, u8 param) {
switch (cmd) {
case 0:channel[ch].inum = 0;
break;
case 'd': // Duty
if (param > 15) {
channel[ch].dutyTable = param >> 4;
const u8 stretch = param & 0xf;
channel[ch].dutyStretch = stretch;
channel[ch].dutyStretchCounter = stretch;
channel[ch].dutyPtr = 0;
} else {
channel[ch].dutyTable = 0;
osc[ch].duty = param;
}
break;
case 'f': // Fade
channel[ch].volumed = param;
break;
case 'h': // High filter
channel[ch].filterHigh = param;
filter_setFreqs(ch, channel[ch].filterHigh, channel[ch].filterLow);
break;
case 'i': // Inertia
channel[ch].inertia = param << 1;
break;
case 'j': // Jump
channel[ch].iptr = param;
break;
case 'l': // Low filter
channel[ch].filterLow = param;
filter_setFreqs(ch, channel[ch].filterHigh, channel[ch].filterLow);
break;
case 'o': // vibratO
if (channel[ch].vdepth != (param >> 4)) {
channel[ch].vpos = 0;
}
channel[ch].vdepth = param >> 4;
channel[ch].vrate = param & 15;
break;
case 'p': // Pan
if (param > 15) {
channel[ch].panTable = param >> 4;
const u8 stretch = param & 0xf;
channel[ch].panStretch = stretch;
channel[ch].panStretchCounter = stretch;
channel[ch].panPtr = 0;
} else {
channel[ch].panTable = 0;
osc[ch].pan = param;
}
break;
case 's': // Slide
channel[ch].bendd = param;
break;
case 't': // wait xx Time units
channel[ch].iwait = param;
break;
case 'v': // Volume
if (param > 15) {
const u8 table = param >> 4;
channel[ch].volumeTable = table;
const u8 stretch = param & 0xf;
channel[ch].volumeStretch = stretch;
channel[ch].volumeStretchCounter = stretch;
channel[ch].volumePtr = 0;
osc[ch].volume = volumeTable[table].column[0] << 4;
} else {
channel[ch].volumeTable = 0;
osc[ch].volume = param << 4;
}
break;
case 'w': // Waveform
osc[ch].waveform = param;
break;
case '+': // Relative note
channel[ch].inote = param + channel[ch].tnote - 12 * 4;
break;
case '=': // Absolute note
channel[ch].inote = param;
break;
} /* switch */
} /* runcmd */
static void startplaytrack(int t) {
channel[0].tnum = t;
channel[1].tnum = 0;
channel[2].tnum = 0;
channel[3].tnum = 0;
trackpos = 0;
trackwait = 0;
playtrack = 1;
playsong = 0;
}
static void startplaysong(int p) {
songpos = p;
trackpos = 0;
trackwait = 0;
playtrack = 0;
playsong = 1;
}
static void playroutine() { // called at 50 Hz
u8 ch;
if (playtrack || playsong) {
if (trackwait) {
trackwait--;
} else {
trackwait = sTempo;
if (!trackpos) {
if (playsong) {
if (songpos >= songlen) {
songpos = 0;
trackpos = 0;
// playsong = 0;
}
for (ch = 0; ch < 4; ch++) {
u8 tmp[2];
readsong(songpos, ch, tmp);
channel[ch].tnum = tmp[0];
channel[ch].transp = tmp[1];
}
songpos++;
}
}
if (playtrack || playsong) {
for (ch = 0; ch < 4; ch++) {
if (channel[ch].tnum) {
struct PatternLine tl;
u8 instr = 0;
readtrack(channel[ch].tnum, trackpos, &tl);
if (tl.note == 255) {
// Note cut
channel[ch].volumeTable = 0;
osc[ch].volume = 0;
channel[ch].volumed = 0;
} else if (tl.note) {
channel[ch].tnote = tl.note + channel[ch].transp;
instr = channel[ch].lastinstr;
if (tl.instr) {
instr = tl.instr;
}
if (instr) {
channel[ch].lastinstr = instr;
channel[ch].inum = instr;
channel[ch].iptr = 0;
channel[ch].iwait = 0;
channel[ch].bend = 0;
channel[ch].bendd = 0;
channel[ch].volumed = 0;
channel[ch].vdepth = 0;
}
if (tl.cmd[0]) {
runcmd(ch, tl.cmd[0], tl.param[0]);
}
/*if(tl.cmd[1])
runcmd(ch, tl.cmd[1], tl.param[1]);*/
}
}
}
trackpos++;
trackpos &= 31;
}
}
}
for (ch = 0; ch < NUM_CHANNELS; ch++) {
s16 vol;
u16 slur;
while (channel[ch].inum && !channel[ch].iwait) {
u8 il[2];
readinstr(channel[ch].inum, channel[ch].iptr, il);
channel[ch].iptr++;
runcmd(ch, il[0], il[1]);
}
if (channel[ch].iwait) {
channel[ch].iwait--;
}
if (channel[ch].inertia) {
s16 diff;
slur = channel[ch].slur;
diff = waveStep[channel[ch].inote] - slur;
// diff >>= channel[ch].inertia;
if (diff > 0) {
if (diff > channel[ch].inertia) {
diff = channel[ch].inertia;
}
} else if (diff < 0) {
if (diff < -channel[ch].inertia) {
diff = -channel[ch].inertia;
}
}
slur += diff;
channel[ch].slur = slur;
} else {
slur = waveStep[channel[ch].inote];
}
osc[ch].freq = slur + channel[ch].bend + ((channel[ch].vdepth * sinetable[channel[ch].vpos & 63]) >> 2);
channel[ch].bend += channel[ch].bendd << 3;
if (channel[ch].volumeTable == 0) {
vol = osc[ch].volume + channel[ch].volumed;
if (vol < 0) {
vol = 0;
}
if (vol > 255) {
vol = 255;
}
osc[ch].volume = vol;
} else {
if (channel[ch].volumeStretchCounter > 0) {
channel[ch].volumeStretchCounter--;
} else {
channel[ch].volumeStretchCounter = channel[ch].volumeStretch;
if (channel[ch].volumePtr < volumeTable[channel[ch].volumeTable].length - 1) {
channel[ch].volumePtr++;
osc[ch].volume = volumeTable[channel[ch].volumeTable].column[channel[ch].volumePtr] << 4;
}
}
}
channel[ch].vpos += channel[ch].vrate;
}
} /* playroutine */
static const char *getChipId() {
return "P1XL";
}
static ChipError init() {
for (size_t i = 0; i < 2; i++) {
sBlipBuffer[i] = blip_new(SAMPLES_PER_PLAYROUTINE * 2);
blip_set_rates(sBlipBuffer[i], CLOCK_RATE, SAMPLE_RATE);
blip_clear(sBlipBuffer[i]);
}
trackwait = 0;
trackpos = 0;
playsong = 0;
playtrack = 0;
for (size_t i = 0; i < NUM_CHANNELS; i++) {
osc[i].volume = 0;
osc[i].buzzseed = 1;
osc[i].pan = 8;
channel[i].inum = 0;
channel[i].filterLow = 0;
channel[i].filterHigh = 255;
}
for (int i = 1; i < 256; i++) {
sprintf(instrument[i].name, "INSTR %02X", i);
instrument[i].length = 1;
instrument[i].line[0].cmd = '0';
instrument[i].line[0].param = 0;
}
for (size_t i = 0; i < 16; i++) {
volumeTable[i].length = 1;
volumeTable[i].column[0] = 0;
dutyTable[i].length = 1;
dutyTable[i].column[0] = 0;
panTable[i].length = 1;
panTable[i].column[0] = 8;
for (size_t j = 0; j < 32; j++) {
waveTable[i][j] = 8;
}
}
return NO_ERR;
} /* init */
static ChipError shutdown() {
for (size_t j = 0; j < 2; j++) {
blip_delete(sBlipBuffer[j]);
}
return NO_ERR;
}
static ChipError newSong() {
return NO_ERR;
}
static ChipError loadSong(const char *_filename) {
FILE *f;
char buf[1024];
char str[1024];
int cmd[3];
int i1, i2, trk[4], transp[4], param[3], note, instr;
int i;
snprintf(sFilename, sizeof(sFilename), "%s", _filename);
f = fopen(_filename, "r");
if (!f) {
return "Cannot load file.";
}
songlen = 1;
while (!feof(f) && fgets(buf, sizeof(buf), f)) {
if (9 == sscanf(buf, "song %x %x %x %x %x %x %x %x %x", &i1,
&trk[0], &transp[0],
&trk[1], &transp[1],
&trk[2], &transp[2],
&trk[3], &transp[3])) {
for (i = 0; i < 4; i++) {
song[i1].track[i] = trk[i];
song[i1].transp[i] = transp[i];
}
if (songlen <= i1) {
songlen = i1 + 1;
}
} else if (8 == sscanf(buf, "pattern %x %x %x %x %x %x %x %x",
&i1, &i2,
¬e, &instr,
&cmd[0], ¶m[0],
&cmd[1], ¶m[1])) {
track[i1].line[i2].note = note;
track[i1].line[i2].instr = instr;
for (i = 0; i < 2; i++) {
track[i1].line[i2].cmd[i] = cmd[i];
track[i1].line[i2].param[i] = param[i];
}
} else if (2 == sscanf(buf, "instrumentName %x %255[^\n]s", &i1, str)) {
strncpy(instrument[i1].name, str, 255);
} else if (4 == sscanf(buf, "instrument %x %x %x %x", &i1, &i2, &cmd[0], ¶m[0])) {
instrument[i1].line[i2].cmd = cmd[0];
instrument[i1].line[i2].param = param[0];
if (instrument[i1].length <= i2) {
instrument[i1].length = i2 + 1;
}
} else if (3 == sscanf(buf, "volume %x %x %x", &i1, &i2, &cmd[0])) {
volumeTable[i1].column[i2] = cmd[0];
if (volumeTable[i1].length <= i2) {
volumeTable[i1].length = i2 + 1;
}
} else if (3 == sscanf(buf, "duty %x %x %x", &i1, &i2, &cmd[0])) {
dutyTable[i1].column[i2] = cmd[0];
if (dutyTable[i1].length <= i2) {
dutyTable[i1].length = i2 + 1;
}
} else if (3 == sscanf(buf, "pan %x %x %x", &i1, &i2, &cmd[0])) {
panTable[i1].column[i2] = cmd[0];
if (panTable[i1].length <= i2) {
panTable[i1].length = i2 + 1;
}
} else if (3 == sscanf(buf, "wave %x %x %x", &i1, &i2, &cmd[0])) {
waveTable[i1][i2] = cmd[0];
}
}
fclose(f);
return NO_ERR;
} /* loadSong */
static ChipError saveSong(const char *filename) {
FILE *f;
int i, j;
f = fopen(filename, "w");
if (!f) {
return "save error!\n";
}
fprintf(f, "musicchip tune\n");
fprintf(f, "version 1\n");
fprintf(f, "\n");
for (i = 0; i < songlen; i++) {
fprintf(f, "song %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", i,
song[i].track[0], song[i].transp[0],
song[i].track[1], song[i].transp[1],
song[i].track[2], song[i].transp[2],
song[i].track[3], song[i].transp[3]);
}
fprintf(f, "\n");
for (i = 1; i < 256; i++) {
for (j = 0; j < PATTERN_LEN; j++) {
struct PatternLine *tl = &track[i].line[j];
if (tl->note || tl->instr || tl->cmd[0] || tl->cmd[1]) {
fprintf(f, "pattern %02x %02x %02x %02x %02x %02x %02x %02x\n", i, j,
tl->note, tl->instr,
tl->cmd[0], tl->param[0],
tl->cmd[1], tl->param[1]);
}
}
}
fprintf(f, "\n");
for (i = 1; i < 256; i++) {
if (instrument[i].length > 1) {
fprintf(f, "instrumentName %02x %s\n", i, instrument[i].name);
for (j = 0; j < instrument[i].length; j++) {
fprintf(f, "instrument %02x %02x %02x %02x \n", i, j,
instrument[i].line[j].cmd, instrument[i].line[j].param);
}
}
}
fprintf(f, "\n");
for (i = 1; i < 16; i++) {
if (volumeTable[i].length > 1) {
for (j = 0; j < volumeTable[i].length; j++) {
fprintf(f, "volume %02x %02x %02x\n", i, j, volumeTable[i].column[j]);
}
}
}
fprintf(f, "\n");
for (i = 1; i < 16; i++) {
if (dutyTable[i].length > 1) {
for (j = 0; j < dutyTable[i].length; j++) {
fprintf(f, "duty %02x %02x %02x\n", i, j, dutyTable[i].column[j]);
}
}
}
fprintf(f, "\n");
for (i = 1; i < 16; i++) {
if (panTable[i].length > 1) {
for (j = 0; j < panTable[i].length; j++) {
fprintf(f, "pan %02x %02x %02x\n", i, j, panTable[i].column[j]);
}
}
}
fprintf(f, "\n");
for (i = 1; i < 16; i++) {
bool used = false;
for (j = 0; j < 32; j++) {
if (waveTable[i][j] != 8) {
used = true;
break;
}
}
if (used) {
for (j = 0; j < 32; j++) {
fprintf(f, "wave %02x %02x %02x\n", i, j, waveTable[i][j]);
}
}
}
fclose(f);
return NO_ERR;
} /* saveSong */
static ChipError insertSongRow(u8 _channelNum, u8 _atSongRow) {
if (songlen < 256) {
memmove(&song[_atSongRow + 1],
&song[_atSongRow + 0],
sizeof(struct SongLine) * (songlen - _atSongRow));
songlen++;
memset(&song[_atSongRow], 0, sizeof(struct SongLine));
return NO_ERR;
} else {
return "Song is full.";
}
}
static ChipError addSongRow() {
if (songlen < 256) {
memset(&song[songlen], 0, sizeof(struct SongLine));
songlen++;
return NO_ERR;
} else {
return "Song is full.";
}
}
static ChipError deleteSongRow(u8 _channelNum, u8 _songRow) {
if (songlen > 1) {
memmove(&song[_songRow + 0],
&song[_songRow + 1],
sizeof(struct SongLine) * (songlen - _songRow - 1));
songlen--;
}
return NO_ERR;
}
static ChipError insertPatternRow(u8 _channelNum, u8 _patternNum, u8 _atPatternRow) {
memmove(&(track[_patternNum].line[_atPatternRow + 1]),
&(track[_patternNum].line[_atPatternRow + 0]),
sizeof(struct PatternLine) * (PATTERN_LEN - _atPatternRow));
memset(&(track[_patternNum].line[_atPatternRow]), 0, sizeof(struct PatternLine));
return NO_ERR;
}
static ChipError addPatternRow(u8 _channelNum, u8 _patternNum) {
return NO_ERR;
}
static ChipError deletePatternRow(u8 _channelNum, u8 _patternNum, u8 _patternRow) {
memmove(&(track[_patternNum].line[_patternRow + 0]),
&(track[_patternNum].line[_patternRow + 1]),
sizeof(struct PatternLine) * (PATTERN_LEN - _patternRow - 1));
memset(&(track[_patternNum].line[PATTERN_LEN - 1]), 0, sizeof(struct PatternLine));
return NO_ERR;
}
static ChipError insertInstrumentRow(u8 _instrument, u8 _atInstrumentRow) {
struct Instrument *in = &instrument[_instrument];
if (in->length < 256) {
memmove(&in->line[_atInstrumentRow + 1],
&in->line[_atInstrumentRow + 0],
sizeof(struct InstrumentLine) * (in->length - _atInstrumentRow));
in->length++;
in->line[_atInstrumentRow].cmd = '0';
in->line[_atInstrumentRow].param = 0;
return NO_ERR;
} else {
return "Instrument is full.";
}
}
static ChipError addInstrumentRow(u8 _instrument) {
struct Instrument *in = &instrument[_instrument];
if (in->length < 256) {
in->line[in->length].cmd = '0';
in->line[in->length].param = 0;
in->length++;
return NO_ERR;
} else {
return "Instrument is full.";
}
}
static ChipError deleteInstrumentRow(u8 _instrument, u8 _instrumentRow) {
struct Instrument *in = &instrument[_instrument];
if (in->length > 1) {
memmove(&in->line[_instrumentRow + 0],
&in->line[_instrumentRow + 1],
sizeof(struct InstrumentLine) * (in->length - _instrumentRow - 1));
in->length--;
}
return NO_ERR;
}
static ChipError insertTableColumn(u8 _tableKind, u8 _table, u8 _atColumn) {
switch (_tableKind) {
case 0: // VOLUME
{
struct VolumeTable *t = &volumeTable[_table];
if (t->length < 256) {
memmove(&t->column[_atColumn + 1],
&t->column[_atColumn + 0],
sizeof(struct VolumeTable) * (t->length - _atColumn));
t->length++;
t->column[_atColumn] = 0;
return NO_ERR;
} else {
return "Table is full.";
}
}
case 1: // DUTY
{
struct DutyTable *t = &dutyTable[_table];
if (t->length < 256) {
memmove(&t->column[_atColumn + 1],
&t->column[_atColumn + 0],
sizeof(struct DutyTable) * (t->length - _atColumn));
t->length++;
t->column[_atColumn] = 0;
return NO_ERR;
} else {
return "Table is full.";
}
}
case 2: // PAN
{
struct PanTable *t = &panTable[_table];
if (t->length < 256) {
memmove(&t->column[_atColumn + 1],
&t->column[_atColumn + 0],
sizeof(struct PanTable) * (t->length - _atColumn));
t->length++;
t->column[_atColumn] = 0;
return NO_ERR;
} else {
return "Table is full.";
}
}
case 3: // WAVE
return "WAVE tables are a fixed size.";
} /* switch */
return NO_ERR;
} /* insertTableColumn */
static ChipError addTableColumn(u8 _tableKind, u8 _table) {
switch (_tableKind) {
case 0: // VOLUME
{
struct VolumeTable *t = &volumeTable[_table];
if (t->length < 256) {
t->column[t->length] = 0;
t->length++;
return NO_ERR;
} else {
return "Table is full.";
}
}
case 1: // DUTY
{
struct DutyTable *t = &dutyTable[_table];
if (t->length < 256) {
t->column[t->length] = 0;
t->length++;
return NO_ERR;
} else {
return "Table is full.";
}
}
case 2: // PAN
{
struct PanTable *t = &panTable[_table];
if (t->length < 256) {
t->column[t->length] = 0;
t->length++;
return NO_ERR;
} else {
return "Table is full.";
}
}
case 3: // WAVE
return "WAVE tables are a fixed size.";
}
return NO_ERR;
} /* addTableColumn */
static ChipError deleteTableColumn(u8 _tableKind, u8 _table, u8 _atColumn) {
switch (_tableKind) {
case 0: // VOLUME
{
struct VolumeTable *t = &volumeTable[_table];
if (t->length > 1) {
memmove(&t->column[_atColumn + 0],
&t->column[_atColumn + 1],
sizeof(struct VolumeTable) * (t->length - _atColumn - 1));
t->length--;
}
return NO_ERR;
}
case 1: // DUTY
{
struct DutyTable *t = &dutyTable[_table];
if (t->length > 1) {
memmove(&t->column[_atColumn + 0],
&t->column[_atColumn + 1],
sizeof(struct DutyTable) * (t->length - _atColumn - 1));
t->length--;
}
return NO_ERR;
}
case 2: // PAN
{
struct PanTable *t = &panTable[_table];
if (t->length > 1) {
memmove(&t->column[_atColumn + 0],
&t->column[_atColumn + 1],
sizeof(struct PanTable) * (t->length - _atColumn - 1));
t->length--;
}
return NO_ERR;
}
case 3: // WAVE
return "WAVE tables are a fixed size.";
}
return NO_ERR;
} /* deleteTableColumn */
static u8 getNumMetaData() {
return 0;
}
static ChipMetaDataEntry *getMetaData(u8 _index) {
return NULL;
}
static ChipError setMetaData(u8 _index, ChipMetaDataEntry *entry) {
return NO_ERR;
}
static u8 getNumSaveOptions() {
return 0;
}
static ChipMetaDataEntry *getSaveOptions(u8 _index) {
return NULL;
}
static ChipError setSaveOptions(u8 _index, ChipMetaDataEntry *entry) {
return NO_ERR;
}
static u16 getNumSongRows() {
return songlen;
}
static u8 getNumSongDataColumns(u8 _channelNum) {
return 5;
}
static ChipDataType getSongDataType(u8 _songRow, u8 _channelNum, u8 _songDataColumn) {
if (_songDataColumn == 2) {
return CDT_LABEL;
}
return CDT_HEX;
}
static u8 getSongData(u8 _songRow, u8 _channelNum, u8 _songDataColumn) {
switch (_songDataColumn) {
case 0:return GETHI(song[_songRow].track[_channelNum]);
case 1:return GETLO(song[_songRow].track[_channelNum]);
case 2:return ':';
case 3:return GETHI(song[_songRow].transp[_channelNum]);
case 4:return GETLO(song[_songRow].transp[_channelNum]);
}
return 0;
}
static u8 clearSongData(u8 _songRow, u8 _channelNum, u8 _songDataColumn) {
switch (_songDataColumn) {
case 0:return SETHI(song[_songRow].track[_channelNum], 0);
case 1:return SETLO(song[_songRow].track[_channelNum], 0);
case 3:return SETHI(song[_songRow].transp[_channelNum], 0);
case 4:return SETLO(song[_songRow].transp[_channelNum], 0);
}
return 0;
}
static u8 setSongData(u8 _songRow, u8 _channelNum, u8 _songDataColumn, u8 _data) {
switch (_songDataColumn) {
case 0:return SETHI(song[_songRow].track[_channelNum], _data);
case 1:return SETLO(song[_songRow].track[_channelNum], _data);
case 3:return SETHI(song[_songRow].transp[_channelNum], _data);
case 4:return SETLO(song[_songRow].transp[_channelNum], _data);
}
return _data;
}