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sequencer.c
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sequencer.c
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/*
* Komposter
*
* Copyright (c) 2010 Noora Halme et al. (see AUTHORS)
*
* This code is licensed under the GNU General Public
* License version 2. See LICENSE for full text.
*
* Sequencer page
*
*/
#include "sequencer.h"
// button indexes
#define B_DECCH 0
#define B_ADDCH 1
/*
#define B_BPMDN 2
#define B_BPMUP 3
*/
#define B_SSHORTER 4
#define B_SLONGER 5
#define B_PATT_ADDNUM 6
#define B_PATT_DECNUM 7
#define B_PATT_ADDREP 8
#define B_PATT_DECREP 9
#define B_PATT_ADDTRANS 10
#define B_PATT_DECTRANS 11
#define B_PATT_ADD 12
#define B_PATT_PREVPATCH 13
#define B_PATT_NEXTPATCH 14
#define B_CHAN_PREVSYNTH 15
#define B_CHAN_NEXTSYNTH 16
#define B_SEQPLAY 17
#define B_REWIND 18
#define B_CLEAR 19
#define B_PREVIEW_REWIND 20
#define B_PREVIEW_PLAY 21
#define B_PREVIEW_EXPORT 22
#define B_SAVE_SONG 23
#define B_LOAD_SONG 24
#define B_ENVRESTART 25
#define B_VCORESTART 26
#define B_LFORESTART 27
#define B_NEWSONG 28
#define B_RENDER 29
#define B_LOOP 30
#define B_BPM_INC 31
#define B_BPM_DEC 32
#define B_BPM 33
#define B_TIME_INC 34
#define B_TIME_DEC 35
#define B_DIV_INC 36
#define B_DIV_DEC 37
#define SEQUENCER_Y 14.5
#define SEQUENCER_X 45.5
#define SEQUENCER_CELLWIDTH 24
#define SEQUENCER_CELLHEIGHT 24
// file dialogs
#define FD_SAVE 0
#define FD_LOAD 1
// file dialog structs for load/save synth
filedialog songfd[2];
int songfd_active=-1;
int seqch;
int seqsonglen;
int seq_start;
int bpm; // beats per minute
char bpm_text[4]; // used when editing
int beats_per_measure=4; // beats per measure
int beatdiv=4; // beat length 1/2/4/8/16. 4=quarter notes divided to 16ths, 2=half notes divided to 8ths, etc.
/*
default is 4/4 time
example:beatdiv=8 beats_per_measure=7 sets 7/8 time signature
*/
int seq_synth[MAX_CHANNELS]; // which synth assigned to each channel
int seq_restart[MAX_CHANNELS]; // channel restart flags
int seq_mute[MAX_CHANNELS]; // temporary mute for channel
int seq_hover_ch;
int seq_hover_meas;
int seq_chlabel_hover;
int seq_timeline_hover;
int seq_render_start;
int seq_render_end;
int seq_render_drag;
int seq_render_hover;
int seqslide_hover;
int seqslide_drag;
int seqslide_drag_xofs;
int seqslide_drag_start;
int seq_drag_active; // are we dragging currently?
int seq_drag_grabpos; // the measure from which the pattern was grabbed
int seq_drag_pattstart; // the first measure of the pattern being dragged
int seq_drag_droppos; // where the pattern is currently dragged to (draw ghost here)
int seq_drag_pattch;
int seq_ui[38];
int bpm_kbfocus;
int seq_add_patt;
int seq_add_repeat;
int seq_add_transpose;
int seq_add_editmode;
int seq_add_patch;
// sequencer data
int seq_pattern[MAX_CHANNELS][MAX_SONGLEN];
int seq_repeat[MAX_CHANNELS][MAX_SONGLEN];
int seq_transpose[MAX_CHANNELS][MAX_SONGLEN];
int seq_patch[MAX_CHANNELS][MAX_SONGLEN];
// from main
extern int cpage;
// from modules.c
extern int gate[MAX_SYNTH];
// from pattern.c
extern unsigned int pattlen[MAX_PATTERN];
extern int cpatch[MAX_SYNTH];
extern int cpatt;
// from synthesizer.c
extern char synthname[MAX_SYNTH][128];
extern int csynth;
// from patch.c
extern char patchname[MAX_SYNTH][MAX_PATCHES][128];
// from audio.c
extern int audiomode;
extern int render_state;
extern long render_bufferlen;
extern long render_pos;
extern short *render_buffer;
extern long render_playpos;
extern int render_type;
extern float audio_peak;
extern float audio_latest_peak;
extern int render_live_loop;
// initialize seq data to defaults
void sequencer_init()
{
int i,j;
seqch=4;
seqsonglen=128;
bpm=125;
seq_start=0;
seq_hover_ch=-1;
seq_hover_meas=-1;
seq_chlabel_hover=-1;
seq_timeline_hover=-1;
seq_render_start=-1;
seq_render_end=-1;
seq_render_hover=-1;
seq_render_drag=0;
seqslide_hover=0;
seqslide_drag=0;
seqslide_drag_xofs=0;
seqslide_drag_start=0;
seq_add_patt=0;
seq_add_repeat=1;
seq_add_transpose=0;
seq_add_editmode=0;
for(i=0;i<30;i++) seq_ui[i]=0;
for(i=0;i<MAX_CHANNELS;i++) { seq_synth[i]=0; seq_restart[i]=0; seq_mute[i]=0; }
for(i=0;i<MAX_CHANNELS;i++)
for(j=0;j<MAX_SONGLEN;j++) {
seq_pattern[i][j]=-1;
seq_repeat[i][j]=0;
seq_transpose[i][j]=0;
seq_patch[i][j]=0;
}
// no dialogs visible
songfd_active=-1;
strcpy((char*)(&songfd[FD_SAVE].title), "save song");
strcpy((char*)(&songfd[FD_LOAD].title), "load song");
}
void sequencer_clearsong(void)
{
int i,j;
seqch=4;
seqsonglen=128;
bpm=125;
seq_start=0;
seq_render_start=-1;
seq_render_end=-1;
for(i=0;i<MAX_CHANNELS;i++) { seq_synth[i]=0; seq_restart[i]=0; }
for(i=0;i<MAX_CHANNELS;i++)
for(j=0;j<MAX_SONGLEN;j++) {
seq_pattern[i][j]=-1;
seq_repeat[i][j]=0;
seq_transpose[i][j]=0;
seq_patch[i][j]=0;
}
}
void sequencer_toggleplayback() {
int seq_playing;
seq_playing=((audiomode==AUDIOMODE_PLAY)&1)^1;
seq_ui[B_SEQPLAY]&=1;
seq_ui[B_SEQPLAY]|=(seq_playing<<1);
// TODO: reset all synths every time play starts/stops
if (seq_playing) {
audiomode=AUDIOMODE_PLAY;
} else {
audio_panic();
audiomode=AUDIOMODE_COMPOSING;
}
}
// scan the sequencer pattern list and see if there is a pattern which spans to the
// grid position clicked
int sequencer_ispattern(int ch, int clickpos)
{
int i;
for(i=clickpos;i>=0;i--) {
if (seq_pattern[ch][i]>=0) {
if (clickpos >= i && clickpos < (i+pattlen[seq_pattern[ch][i]]*seq_repeat[ch][i])) {
// the pattern spans to the clicked position, return true
return 1;
}
}
}
return 0;
}
// starting position of the pattern which spans to clicked position
int sequencer_patternstart(int ch, int clickpos)
{
int i;
for(i=clickpos;i>=0;i--) {
if (seq_pattern[ch][i]>=0) {
if (clickpos >= i && clickpos < (i+pattlen[seq_pattern[ch][i]]*seq_repeat[ch][i])) {
// the pattern spans to the clicked position, return pattern start index
return i;
}
}
}
return -1; // nothing here
}
// returns currently pointed channel and measure into integers pointed
// by the caller. both are set to -1 if cursor is outside the sequencer
// grid. returns 0 if off-grid, 1 if on audio channels, 2 if on modulator
// channel (=255)
int sequencer_cursorpos(int x, int y, int *channel, int *measure)
{
int cx,cy;
if (
x > SEQUENCER_X &&
x < (SEQUENCER_X + seqsonglen*SEQUENCER_CELLWIDTH + 1) &&
y > SEQUENCER_Y &&
y < (SEQUENCER_Y + seqch*SEQUENCER_CELLHEIGHT)
)
{
cx=(int)((x-SEQUENCER_X)/SEQUENCER_CELLWIDTH);
cy=(int)((y-SEQUENCER_Y)/SEQUENCER_CELLHEIGHT);
*channel=cy; *measure=cx+seq_start;
return 1;
}
// test the modulator channel
if (
x > SEQUENCER_X &&
x < (SEQUENCER_X + seqsonglen*SEQUENCER_CELLWIDTH + 1) &&
y > (SEQUENCER_Y + (seqch+2)*SEQUENCER_CELLHEIGHT) &&
y < (SEQUENCER_Y + (seqch+3)*SEQUENCER_CELLHEIGHT)
)
{
cx=(int)((x-SEQUENCER_X)/SEQUENCER_CELLWIDTH);
*channel=255; *measure=cx+seq_start;
return 2;
}
*channel=-1;
*measure=-1;
return 0;
}
int sequencer_timelinepos(int x, int y) {
// test the modulator channel
if (
x > SEQUENCER_X &&
x < (SEQUENCER_X + seqsonglen*SEQUENCER_CELLWIDTH + 1) &&
y > (SEQUENCER_Y + (seqch+3)*SEQUENCER_CELLHEIGHT) &&
y < (SEQUENCER_Y + (seqch+4)*SEQUENCER_CELLHEIGHT+4)
)
return (int)((x-SEQUENCER_X)/SEQUENCER_CELLWIDTH);
return -1;
}
void sequencer_mouse_hover(int x, int y)
{
int m;
// test buttons
seq_ui[B_DECCH]=hovertest_box(x, y, 14, DS_HEIGHT-14, 16, 16);
seq_ui[B_ADDCH]=hovertest_box(x, y, 80, DS_HEIGHT-14, 16, 16);
/*
seq_ui[B_BPMDN]=hovertest_box(x, y, 114, DS_HEIGHT-14, 16, 16);
seq_ui[B_BPMUP]=hovertest_box(x, y, 188, DS_HEIGHT-14, 16, 16);
*/
seq_ui[B_BPM]=hovertest_box(x, y, 151, DS_HEIGHT-14, 16, 46);
seq_ui[B_SSHORTER]=hovertest_box(x, y, 222, DS_HEIGHT-14, 16, 16);
seq_ui[B_SLONGER]=hovertest_box(x, y, 304, DS_HEIGHT-14, 16, 16);
seq_ui[B_SAVE_SONG]=hovertest_box(x, y, 350, DS_HEIGHT-14, 16, 16);
seq_ui[B_LOAD_SONG]=hovertest_box(x, y, 372, DS_HEIGHT-14, 16, 16);
seq_ui[B_CLEAR]=hovertest_box(x, y, 462, DS_HEIGHT-14, 16, 16);
seq_ui[B_REWIND]=hovertest_box(x, y, 440, DS_HEIGHT-14, 16, 16);
seq_ui[B_NEWSONG]=hovertest_box(x, y, 394, DS_HEIGHT-14, 16, 16) | (seq_ui[B_NEWSONG]&8);
seq_ui[B_LOOP]=hovertest_box(x, y, 630, DS_HEIGHT-14, 16, 48);
seq_ui[B_SEQPLAY]&=0xfe; seq_ui[B_RENDER]=0;
if (seq_render_start >= 0 && seq_render_end >= 0 && seq_render_start < seq_render_end) {
seq_ui[B_RENDER]=hovertest_box(x, y, 578, DS_HEIGHT-14, 16, 42);
}
if (audiomode!=AUDIOMODE_PLAY) seq_ui[B_SEQPLAY]=0;
if (render_state==RENDER_COMPLETE) seq_ui[B_SEQPLAY]=0;
if (seq_render_start >= 0 ) {
seq_ui[B_SEQPLAY]|=hovertest_box(x, y, 526, DS_HEIGHT-14, 16, 42);
}
seqslide_hover=hovertest_hslider(x,y,SEQUENCER_X, SEQUENCER_Y+(seqch+5)*SEQUENCER_CELLHEIGHT, (DS_WIDTH-(SEQUENCER_X+6)), 12,
seq_start, (DS_WIDTH-(SEQUENCER_X+4))/SEQUENCER_CELLWIDTH, seqsonglen);
m=sequencer_cursorpos(x, y, &seq_hover_ch, &seq_hover_meas);
seq_timeline_hover=sequencer_timelinepos(x, y);
// hovering on channel labels?
seq_chlabel_hover=-1;
if (
x > 0 && x < SEQUENCER_X &&
y > SEQUENCER_Y &&
y < (SEQUENCER_Y + (seqch+3)*SEQUENCER_CELLHEIGHT)
)
{
m=(int)((y-SEQUENCER_Y)/SEQUENCER_CELLHEIGHT);
if (m==(seqch+2)) { m=255; } else { if (m>seqch) m=-1; }
seq_chlabel_hover=m;
}
}
void sequencer_mouse_drag(int x, int y)
{
float f, cos, cip, sbw, slw;
int dragch, dragmeas;
// dragging the piano roll scrollbar
if (seqslide_drag>0) {
sbw=DS_WIDTH-(SEQUENCER_X+6); // scrollbar width
cos=(DS_WIDTH-(SEQUENCER_X))/SEQUENCER_CELLWIDTH; // cells on screen
cip=seqsonglen; //pattlen[cpatt]*16; // cells in pattern
slw=sbw*(cos/cip);
f=((x-seqslide_drag_xofs)/(sbw-slw))*(cip-cos);
seq_start=seqslide_drag_start+f;
if (seq_start>(1+cip-cos)) seq_start=(1+cip-cos);
if (seq_start<0) seq_start=0;
return;
}
// if pattern drag is active, draw a "ghost" of it. it cannot be dragged out of
// bounds, so stop it from moving beyond the edges
if (seq_drag_active) {
sequencer_cursorpos(x, y, &dragch, &dragmeas);
seq_drag_droppos=dragmeas;
}
if (seq_render_drag) {
seq_timeline_hover=sequencer_timelinepos(x, y);
seq_render_end=seq_timeline_hover+seq_start;
}
}
void sequencer_mouse_click(int button, int state, int x, int y)
{
int i,j,pl,m,n;
int dragdiff;
char *songdir;
int seq_playing;
seq_playing=((audiomode==AUDIOMODE_PLAY)&1);
if (button==GLUT_LEFT_BUTTON) {
if (state==GLUT_DOWN) {
// clear the song
if (seq_ui[B_NEWSONG]&1) {
if (seq_ui[B_NEWSONG]&8) {
// wipe everything
synth_lockaudio();
for(i=0;i<MAX_SYNTH;i++) synth_clear(i);
patch_init();
pattern_init();
sequencer_clearsong();
synth_releaseaudio();
console_post("Song cleared and everything reset back to defaults");
seq_ui[B_NEWSONG]&=0xff-8;
} else {
console_post("Click again to start a new song from scratch");
seq_ui[B_NEWSONG]|=8;
}
return;
} else {
seq_ui[B_NEWSONG]&=0xff-8;
}
// test ui elements
if (seq_ui[B_DECCH]) { if (seqch>2) seqch--; return; }
if (seq_ui[B_ADDCH]) { if (seqch<MAX_CHANNELS) seqch++; return; }
/*
if (seq_ui[B_BPMDN]) { if (bpm>0) synth_update_bpm(bpm-1); return; }
if (seq_ui[B_BPMUP]) { if (bpm<255) synth_update_bpm(bpm+1); return; }
*/
if (seq_ui[B_BPM]) {
dialog_open(&sequencer_draw_bpm, &sequencer_bpm_hover, &sequencer_bpm_click);
dialog_bindkeyboard(&sequencer_bpm_keyboard);
return;
}
if (seq_ui[B_SSHORTER]) { if (seqsonglen>1) seqsonglen--; return; }
if (seq_ui[B_SLONGER]) { if (seqsonglen<(MAX_SONGLEN-1)) seqsonglen++; return; }
if (seq_ui[B_CLEAR]) { if (!seq_playing) { seq_render_start=0; seq_render_end=0; } return; }
if (seq_ui[B_REWIND]) {
if (!seq_playing) {
for(i=0,m=0,seq_render_start=0;i<seqsonglen;i++) for(j=0;j<seqch;j++) {
if (seq_pattern[j][i]>=0) {
n=i+seq_repeat[j][i]*pattlen[seq_pattern[j][i]];
if (n>m) m=n;
}
}
seq_render_end=m;
}
return;
}
if (seq_ui[B_RENDER] && seq_render_start >= 0 && seq_render_end >= 0 && seq_render_start < seq_render_end) {
audiomode=AUDIOMODE_PLAY;
render_type=RENDER_IN_PROGRESS; // pre-render first, then play
render_state=RENDER_START;
dialog_open(&sequencer_draw_render, &sequencer_render_hover, &sequencer_render_click);
dialog_bindkeyboard(&sequencer_render_keyboard);
}
if (seq_ui[B_SEQPLAY]&1 && seq_render_start >= 0) {
render_type=RENDER_LIVE;
render_state=RENDER_START;
sequencer_toggleplayback();
}
if (seq_ui[B_SAVE_SONG]) {
songdir=dotfile_getvalue("songFileDir");
filedialog_open(&songfd[FD_SAVE], "ksong", songdir);
songfd_active=FD_SAVE;
dialog_open(&sequencer_draw_file, &sequencer_file_hover, &sequencer_file_click);
dialog_bindkeyboard(&sequencer_file_keyboard);
dialog_binddrag(&sequencer_file_drag);
return;
}
if (seq_ui[B_LOAD_SONG]) {
songdir=dotfile_getvalue("songFileDir");
filedialog_open(&songfd[FD_LOAD], "ksong", songdir);
songfd_active=FD_LOAD;
dialog_open(&sequencer_draw_file, &sequencer_file_hover, &sequencer_file_click);
dialog_bindkeyboard(&sequencer_file_keyboard);
dialog_binddrag(&sequencer_file_drag);
return;
}
if (seq_ui[B_LOOP]) render_live_loop^=1;
// click on the slider?
if (seqslide_hover) {
seqslide_drag=1;
seqslide_drag_xofs=x;
seqslide_drag_start=seq_start;
}
// click on the timeline
if (seq_timeline_hover>=0) {
if (!seq_playing) {
seq_render_start=seq_timeline_hover+seq_start; //(OUTPUTFREQ/(bpm*256/60))*((seq_timeline_hover+seq_start)*1024);
seq_render_drag=1;
}
return;
}
// click on sequencer grid?
if (seq_hover_ch>=0 && seq_hover_meas>=0 && seq_hover_ch<255) {
if (sequencer_ispattern(seq_hover_ch, seq_hover_meas)) {
// there's a pattern here, was shift down?
m=glutGetModifiers();
if (m==GLUT_ACTIVE_SHIFT) {
// delete the pattern
j=sequencer_patternstart(seq_hover_ch, seq_hover_meas);
seq_pattern[seq_hover_ch][j]=-1;
seq_repeat[seq_hover_ch][j]=1;
seq_transpose[seq_hover_ch][j]=0;
seq_patch[seq_hover_ch][j]=0;
} else {
//start dragging it
seq_drag_active=1;
seq_drag_grabpos=seq_hover_meas;
seq_drag_droppos=seq_drag_grabpos;
seq_drag_pattstart=sequencer_patternstart(seq_hover_ch, seq_hover_meas);
seq_drag_pattch=seq_hover_ch;
}
} else {
// left click on empty cell - do nothing?
}
}
// click on modulator channel
if (seq_hover_ch==255 && seq_hover_meas>=0) {
console_post("Modulator commands are not yet implemented!");
}
// click on channel label
if (seq_chlabel_hover>=0 && seq_chlabel_hover<255) {
// pop up the channel settings dialog
dialog_open(&sequencer_draw_channel, &sequencer_channel_hover, &sequencer_channel_click);
dialog_bindkeyboard(&sequencer_channel_keyboard);
sequencer_channel_hover(x, y); // call once to reset buttons
return;
}
// click on modulator channel label
if (seq_chlabel_hover==255) {
}
}
if (state==GLUT_UP) {
// if the slider is being dragged, release it
if (seqslide_drag) { seqslide_drag=0; }
if (seq_render_drag) {
seq_render_end=sequencer_timelinepos(x, y)+seq_start;
seq_timeline_hover=sequencer_timelinepos(x, y);
seq_render_drag=0;
}
// check if there's a pattern being dragged. if yes, drop it here
if (seq_drag_active) {
seq_drag_active=0;
dragdiff=seq_drag_droppos-seq_drag_grabpos;
if (dragdiff!=0) {
// move pattern data from drag_start to diff
j=seq_drag_pattstart + (seq_drag_droppos-seq_drag_grabpos);
pl=seq_repeat[seq_drag_pattch][seq_drag_pattstart]*pattlen[seq_pattern[seq_drag_pattch][seq_drag_pattstart]];
if (j<0) j=0;
if ( (j+pl) > seqsonglen) j=seqsonglen-pl;
seq_pattern[seq_drag_pattch][j]=seq_pattern[seq_drag_pattch][seq_drag_pattstart];
seq_repeat[seq_drag_pattch][j]=seq_repeat[seq_drag_pattch][seq_drag_pattstart];
seq_transpose[seq_drag_pattch][j]=seq_transpose[seq_drag_pattch][seq_drag_pattstart];
seq_patch[seq_drag_pattch][j]=seq_patch[seq_drag_pattch][seq_drag_pattstart];
seq_pattern[seq_drag_pattch][seq_drag_pattstart]=-1;
for(i=1;i<pl;i++) seq_pattern[seq_drag_pattch][j+i]=-1;
i=sequencer_cursorpos(x, y, &seq_hover_ch, &seq_hover_meas); // extra hovercheck to move the cursor as well
} else {
// pattern was clicked but not dragged anywhere - jump to pattern page and select the pattern
i=sequencer_patternstart(seq_hover_ch, seq_hover_meas);
cpatt=seq_pattern[seq_hover_ch][i];
console_post("Patterns");
cpage=3;
}
}
}
}
if (button==GLUT_RIGHT_BUTTON) {
if (state==GLUT_DOWN) {
if (seq_timeline_hover>=0) {
if (!seq_playing) {
seq_render_end=seq_start+seq_timeline_hover; //(OUTPUTFREQ/(bpm*256/60))*((seq_timeline_hover+seq_start+1)*1024);
if (seq_render_end < seq_render_start) {
seq_render_start=-1; seq_render_end=-1;
}
}
return;
}
if (seq_hover_ch>=0 && seq_hover_meas>=0 && seq_hover_ch!=255) {
if (sequencer_ispattern(seq_hover_ch, seq_hover_meas)) {
// right-clicked a pattern so pop up the edit dialog
i=sequencer_patternstart(seq_hover_ch, seq_hover_meas);
seq_add_patt=seq_pattern[seq_hover_ch][i];
seq_add_repeat=seq_repeat[seq_hover_ch][i];
seq_add_transpose=seq_transpose[seq_hover_ch][i];
seq_add_patch=seq_patch[seq_hover_ch][i];
seq_add_editmode=1;
seq_hover_meas=i;
dialog_open(&sequencer_draw_pattern, &sequencer_pattern_hover, &sequencer_pattern_click);
dialog_bindkeyboard(&sequencer_pattern_keyboard);
} else {
// no pattern here yet, open edit dialog
seq_add_patt=0;
seq_add_repeat=1;
seq_add_transpose=0;
seq_add_editmode=0;
seq_add_patch=0;
dialog_open(&sequencer_draw_pattern, &sequencer_pattern_hover, &sequencer_pattern_click);
dialog_bindkeyboard(&sequencer_pattern_keyboard);
}
}
if (seq_hover_ch==255 && seq_hover_meas>=0) {
// clicked on modulator channel - TODO
}
// right click on channel label
if (seq_chlabel_hover>=0 && seq_chlabel_hover<255) {
seq_mute[seq_chlabel_hover]^=1; // toggle channel mute
return;
}
}
}
}
void sequencer_keyboard(unsigned char key, int x, int y)
{
int i,j,n,m;
char *songdir;
int seq_playing;
seq_playing=((audiomode==AUDIOMODE_PLAY)&1);
switch (key) {
case ' ':
if (seq_render_start >= 0) {
render_type=RENDER_LIVE;
render_state=RENDER_START;
sequencer_toggleplayback();
if (seq_playing) {
// we stopped playback, so reset synths
for(i=0;i<seqch;i++) audio_resetsynth(i);
}
}
break;
case 's':
case 'S':
songdir=dotfile_getvalue("songFileDir");
filedialog_open(&songfd[FD_SAVE], "ksong", songdir);
songfd_active=FD_SAVE;
dialog_open(&sequencer_draw_file, &sequencer_file_hover, &sequencer_file_click);
dialog_bindkeyboard(&sequencer_file_keyboard);
dialog_binddrag(&sequencer_file_drag);
break;
case 'l':
case 'L':
songdir=dotfile_getvalue("songFileDir");
filedialog_open(&songfd[FD_LOAD], "ksong", songdir);
songfd_active=FD_LOAD;
dialog_open(&sequencer_draw_file, &sequencer_file_hover, &sequencer_file_click);
dialog_bindkeyboard(&sequencer_file_keyboard);
dialog_binddrag(&sequencer_file_drag);
break;
case 'c':
case 'C':
if (!seq_playing) {
seq_render_start=0; seq_render_end=0;
}
break;
case 'a':
case 'A':
if (!seq_playing) {
for(i=0,m=0,seq_render_start=0;i<seqsonglen;i++) for(j=0;j<seqch;j++) {
if (seq_pattern[j][i]>=0) {
n=i+seq_repeat[j][i]*pattlen[seq_pattern[j][i]];
if (n>m) m=n;
}
}
seq_render_end=m;
}
break;
}
}
void sequencer_draw(void)
{
int i, j, k, sk, sl, osl, pl;
float f, fs, fe, sx;
char tmps[128];
// divider lines
for(j=0;j<=seqch;j++) {
glColor4f(0.3, 0.3, 0.3, 0.8);
glEnable(GL_LINE_STIPPLE);
glLineStipple(1, 0xaaaa);
glBegin(GL_LINES);
glVertex2f(SEQUENCER_X, SEQUENCER_Y+(j*SEQUENCER_CELLHEIGHT));
glVertex2f(SEQUENCER_X+(seqsonglen-seq_start)*SEQUENCER_CELLWIDTH, SEQUENCER_Y+(j*SEQUENCER_CELLHEIGHT));
glEnd();
glDisable(GL_LINE_STIPPLE);
}
glColor4f(0.5, 0.5, 0.5, 0.8);
glEnable(GL_LINE_STIPPLE);
glLineStipple(1, 0xaaaa);
glBegin(GL_LINES);
glVertex2f(SEQUENCER_X, SEQUENCER_Y+((seqch+2)*SEQUENCER_CELLHEIGHT));
glVertex2f(SEQUENCER_X+(seqsonglen-seq_start)*SEQUENCER_CELLWIDTH, SEQUENCER_Y+((seqch+2)*SEQUENCER_CELLHEIGHT));
glVertex2f(SEQUENCER_X, SEQUENCER_Y+((seqch+3)*SEQUENCER_CELLHEIGHT));
glVertex2f(SEQUENCER_X+(seqsonglen-seq_start)*SEQUENCER_CELLWIDTH, SEQUENCER_Y+((seqch+3)*SEQUENCER_CELLHEIGHT));
glEnd();
glDisable(GL_LINE_STIPPLE);
for(i=0,j=seq_start;j<(seqsonglen+1);i++,j++) {
glColor4f(0.2, 0.2, 0.2, 0.8);
if ((j%4)==0) {
glColor4f(0.5, 0.5, 0.5, 0.8);
}
if ((j%16)==0) {
glColor4f(0.7, 0.7, 0.7, 0.8);
}
if ((j%4)==0) {
sprintf(tmps, "%1d", j);
render_text(tmps, 2.5+SEQUENCER_X+(i*SEQUENCER_CELLWIDTH), round(SEQUENCER_Y+((seqch+4)*SEQUENCER_CELLHEIGHT)), 2, 0xffa0a0a0, 0);
}
glEnable(GL_LINE_STIPPLE);
glLineStipple(1, 0xaaaa);
glBegin(GL_LINES);
glVertex2f(SEQUENCER_X+i*SEQUENCER_CELLWIDTH, round(SEQUENCER_Y));
if ((j%4)==0) {
glVertex2f(SEQUENCER_X+i*SEQUENCER_CELLWIDTH, round(SEQUENCER_Y+((seqch+4)*SEQUENCER_CELLHEIGHT)));
} else {
glVertex2f(SEQUENCER_X+i*SEQUENCER_CELLWIDTH, round(SEQUENCER_Y+((seqch+4)*SEQUENCER_CELLHEIGHT))); // was seqch+3
}
glEnd();
glDisable(GL_LINE_STIPPLE);
}
// draw the patterns into the grid
for(i=0;i<seqch;i++)
for(j=0;j<seqsonglen;j++) {
if (seq_pattern[i][j]>=0) {
// pattern here, draw it
sx=SEQUENCER_X+(j-seq_start)*SEQUENCER_CELLWIDTH -1.5;
sl=seq_repeat[i][j]*pattlen[seq_pattern[i][j]]*SEQUENCER_CELLWIDTH;
osl=sl;
if ((sx+sl) > SEQUENCER_X) {
sx++;
if (sx<SEQUENCER_X) {
sl-=(SEQUENCER_X-sx);
sx=SEQUENCER_X;
}
if (sl > 0) {
glColor4f(0.68, 0.33, 0.0, 0.5);
glBegin(GL_QUADS);
glVertex2f( sx+1, SEQUENCER_Y+ i *SEQUENCER_CELLHEIGHT);
glVertex2f( sx+sl, SEQUENCER_Y+ i *SEQUENCER_CELLHEIGHT);
glVertex2f( sx+sl, SEQUENCER_Y+(1+i)*SEQUENCER_CELLHEIGHT-1 );
glVertex2f( sx+1, SEQUENCER_Y+(1+i)*SEQUENCER_CELLHEIGHT-1 );
glEnd();
sprintf(tmps, "%02d", seq_pattern[i][j]);
render_text(tmps, sx+2, SEQUENCER_Y+(i+1)*SEQUENCER_CELLHEIGHT-((SEQUENCER_CELLHEIGHT-14)/2)+2.5, 2, 0x80c0c0c0, 0);
glColor4f(0.68, 0.33, 0.0, 1.0);
if (osl==sl) {
glBegin(GL_LINE_LOOP);
} else {
glBegin(GL_LINE_STRIP);
}
glVertex2f( sx+1, SEQUENCER_Y+ i *SEQUENCER_CELLHEIGHT);
glVertex2f( sx+sl, SEQUENCER_Y+ i *SEQUENCER_CELLHEIGHT);
glVertex2f( sx+sl, SEQUENCER_Y+(1+i)*SEQUENCER_CELLHEIGHT-1 );
glVertex2f( sx+1, SEQUENCER_Y+(1+i)*SEQUENCER_CELLHEIGHT-1 );
glEnd();
// splitter lines to mark repeats
sl/=SEQUENCER_CELLWIDTH; osl/=SEQUENCER_CELLWIDTH;
for(k=0;k<osl;k++) {
if (k >= (osl-sl) && k>0 && k<osl) {
if ( (k%pattlen[seq_pattern[i][j]])==0 ) {
// draw here
sk=k-(osl-sl);
glColor4f(0.68, 0.33, 0.0, 1.0);
glBegin(GL_LINES);
glVertex2f( sx+(sk*SEQUENCER_CELLWIDTH)+0.5, SEQUENCER_Y+ i*SEQUENCER_CELLHEIGHT);
glVertex2f( sx+(sk*SEQUENCER_CELLWIDTH)+0.5, SEQUENCER_Y+ i*SEQUENCER_CELLHEIGHT + (0.2*SEQUENCER_CELLHEIGHT));
glVertex2f( sx+(sk*SEQUENCER_CELLWIDTH)+0.5, SEQUENCER_Y+ i *SEQUENCER_CELLHEIGHT + (0.8*SEQUENCER_CELLHEIGHT));
glVertex2f( sx+(sk*SEQUENCER_CELLWIDTH)+0.5, SEQUENCER_Y+(1+i)*SEQUENCER_CELLHEIGHT-1 );
glEnd();
}
}
}
}
}
}
}
// if hovering on the grid, draw a cursor as guide
if (seq_hover_ch>=0 && seq_hover_meas>=0 && seq_hover_ch<255) {
// if a pattern is under the cursor, highlight the entire pattern. otherwise, highlight only the
// single grid square involved
if (sequencer_ispattern(seq_hover_ch, seq_hover_meas)) {
i=seq_hover_ch;
j=sequencer_patternstart(seq_hover_ch, seq_hover_meas);
// pattern here, draw it
sx=SEQUENCER_X+(j-seq_start)*SEQUENCER_CELLWIDTH;
sl=seq_repeat[i][j]*pattlen[seq_pattern[i][j]]*SEQUENCER_CELLWIDTH;
osl=sl;
if ((sx+sl) > SEQUENCER_X) {
sx++;
if (sx<SEQUENCER_X) {
sl-=(SEQUENCER_X-sx);
sx=SEQUENCER_X;
}
if (sl > 0) {
glColor4f(0.8, 0.8, 0.8, 0.8);
glEnable(GL_LINE_STIPPLE);
glLineStipple(1, 0x3333);
if (osl==sl) {
glBegin(GL_LINE_LOOP);
} else {
glBegin(GL_LINE_STRIP);
}
glVertex2f( sx+1, SEQUENCER_Y+ i *SEQUENCER_CELLHEIGHT);
glVertex2f( sx+sl, SEQUENCER_Y+ i *SEQUENCER_CELLHEIGHT);
glVertex2f( sx+sl, SEQUENCER_Y+(1+i)*SEQUENCER_CELLHEIGHT-1 );
glVertex2f( sx+1, SEQUENCER_Y+(1+i)*SEQUENCER_CELLHEIGHT-1 );
glEnd();
glDisable(GL_LINE_STIPPLE);
}
}
} else {
// single square only
glColor4f(0.8, 0.8, 0.8, 0.8);
glEnable(GL_LINE_STIPPLE);
glLineStipple(1, 0x3333);
glBegin(GL_LINE_LOOP);
glVertex2f( SEQUENCER_X+(seq_hover_meas-seq_start) *SEQUENCER_CELLWIDTH, SEQUENCER_Y+ seq_hover_ch *SEQUENCER_CELLHEIGHT );
glVertex2f( SEQUENCER_X+(seq_hover_meas-seq_start+1)*SEQUENCER_CELLWIDTH, SEQUENCER_Y+ seq_hover_ch *SEQUENCER_CELLHEIGHT );
glVertex2f( SEQUENCER_X+(seq_hover_meas-seq_start+1)*SEQUENCER_CELLWIDTH, SEQUENCER_Y+(1+seq_hover_ch)*SEQUENCER_CELLHEIGHT );
glVertex2f( SEQUENCER_X+(seq_hover_meas-seq_start) *SEQUENCER_CELLWIDTH, SEQUENCER_Y+(1+seq_hover_ch)*SEQUENCER_CELLHEIGHT );
glEnd();
glDisable(GL_LINE_STIPPLE);
}
}
if (seq_hover_ch==255 && seq_hover_meas>=0) {
// hovering on modulator channel
glColor4f(0.8, 0.8, 0.8, 0.8);
glEnable(GL_LINE_STIPPLE);
glLineStipple(1, 0x3333);
glBegin(GL_LINE_LOOP);
glVertex2f( SEQUENCER_X+(seq_hover_meas-seq_start) *SEQUENCER_CELLWIDTH, SEQUENCER_Y+(2+seqch)*SEQUENCER_CELLHEIGHT );
glVertex2f( SEQUENCER_X+(seq_hover_meas-seq_start+1)*SEQUENCER_CELLWIDTH, SEQUENCER_Y+(2+seqch)*SEQUENCER_CELLHEIGHT );
glVertex2f( SEQUENCER_X+(seq_hover_meas-seq_start+1)*SEQUENCER_CELLWIDTH, SEQUENCER_Y+(3+seqch)*SEQUENCER_CELLHEIGHT );
glVertex2f( SEQUENCER_X+(seq_hover_meas-seq_start) *SEQUENCER_CELLWIDTH, SEQUENCER_Y+(3+seqch)*SEQUENCER_CELLHEIGHT );
glEnd();
glDisable(GL_LINE_STIPPLE);
}
// "ghost" if dragging a pattern on grid
if (seq_drag_active) {
i=seq_drag_pattch;
j=seq_drag_pattstart + (seq_drag_droppos-seq_drag_grabpos);
pl=seq_repeat[i][seq_drag_pattstart]*pattlen[seq_pattern[i][seq_drag_pattstart]];
if (j<0) j=0;
if ( (j+pl) > seqsonglen) j=seqsonglen-pl;
sx=SEQUENCER_X+(j-seq_start)*SEQUENCER_CELLWIDTH;
sl=pl*SEQUENCER_CELLWIDTH;
osl=sl;
if ((sx+sl) > SEQUENCER_X) {
if (sx<SEQUENCER_X) {
sl-=(SEQUENCER_X-sx);
sx=SEQUENCER_X;
}
if (sl > 0) {
glColor4f(0.8, 0.8, 0.8, 0.4);
glBegin(GL_QUADS);
glVertex2f( sx+1, SEQUENCER_Y+ i *SEQUENCER_CELLHEIGHT);
glVertex2f( sx+sl, SEQUENCER_Y+ i *SEQUENCER_CELLHEIGHT);
glVertex2f( sx+sl, SEQUENCER_Y+(1+i)*SEQUENCER_CELLHEIGHT-1 );
glVertex2f( sx+1, SEQUENCER_Y+(1+i)*SEQUENCER_CELLHEIGHT-1 );
glEnd();
}
}
}
// draw the render start and end positions
if (seq_render_start >= 0 && seq_render_start >= seq_start) {
f=seq_render_start - seq_start;
glColor4f(0.0, 1.0, 0.0, 1.0);
glBegin(GL_LINES);
glVertex2f(SEQUENCER_X+f*SEQUENCER_CELLWIDTH, SEQUENCER_Y);
glVertex2f(SEQUENCER_X+f*SEQUENCER_CELLWIDTH, SEQUENCER_Y+(seqch+3)*SEQUENCER_CELLHEIGHT);
glEnd();
}
if (seq_render_end >= 0 && seq_render_end >= seq_start) {
f=seq_render_end - seq_start;
glColor4f(1.0, 0.0, 0.0, 1.0);
glBegin(GL_LINES);
glVertex2f(SEQUENCER_X+f*SEQUENCER_CELLWIDTH, SEQUENCER_Y);
glVertex2f(SEQUENCER_X+f*SEQUENCER_CELLWIDTH, SEQUENCER_Y+(seqch+3)*SEQUENCER_CELLHEIGHT);
glEnd();
}
if (seq_render_start >= 0 &&
seq_render_end >= 0 &&
seq_render_start < seq_render_end &&
seq_render_end > seq_start)
{
fs=seq_render_start-seq_start;
if (fs<0) fs=0;
fe=seq_render_end-seq_start;
if ((fe-fs)>0) {
glColor4f(0.5, 0.5, 0.6, 0.3);
glBegin(GL_QUADS);
glVertex2f(SEQUENCER_X+fs*SEQUENCER_CELLWIDTH, SEQUENCER_Y);
glVertex2f(SEQUENCER_X+fs*SEQUENCER_CELLWIDTH, SEQUENCER_Y+(seqch+3)*SEQUENCER_CELLHEIGHT);
glVertex2f(SEQUENCER_X+fe*SEQUENCER_CELLWIDTH, SEQUENCER_Y+(seqch+3)*SEQUENCER_CELLHEIGHT);
glVertex2f(SEQUENCER_X+fe*SEQUENCER_CELLWIDTH, SEQUENCER_Y);
glEnd();
}
}
// timeline cursor
if (seq_timeline_hover>=0) {
i=seq_timeline_hover;
glColor4f(1.0, 1.0, 1.0, 1.0);
glEnable(GL_LINE_STIPPLE);
glLineStipple(1, 0xf0f0);
glBegin(GL_LINES);
glVertex2f(SEQUENCER_X+i*SEQUENCER_CELLWIDTH, SEQUENCER_Y);
glVertex2f(SEQUENCER_X+i*SEQUENCER_CELLWIDTH, SEQUENCER_Y+(seqch+3)*SEQUENCER_CELLHEIGHT);
glEnd();
glDisable(GL_LINE_STIPPLE);
}
// live playback position
if (audiomode==AUDIOMODE_PLAY && (render_state == RENDER_LIVE || render_state == RENDER_LIVE_COMPLETE)) {
if (render_state==RENDER_LIVE) {
i=(render_pos / (OUTPUTFREQ/(bpm*256/60))) >> 6; // calc patternpos from sample index
i+=seq_render_start*16;
if (i >= 0 && (i/16.0f) >= seq_start) {
f=(float)(i)/16.0f - seq_start;