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seq16.c
461 lines (399 loc) · 9.85 KB
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seq16.c
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#include <GLFW/glfw3.h>
#include <time.h>
#include <stdlib.h>
#include <stdio.h>
#include <soundpipe.h>
#include <sporth.h>
#include <pthread.h>
#include <unistd.h>
#include "seq16.h"
#include "glyphs.h"
enum {
SELECT_ON = 0,
SELECT_OFF = 32,
NOTE_ON = 64,
NOTE_OFF = 96,
TRIANGLE = 128,
EMPTY = 160
};
static void color_rgb(uint32_t rgb)
{
int r, g, b;
r = (rgb & 0xff0000) >> 16;
g = (rgb & 0x00ff00) >> 8;
b = (rgb & 0x0000ff);
glColor3f(r / 255.0, g / 255.0, b / 255.0);
}
static void clear_color_rgb(uint32_t rgb)
{
int r, g, b;
r = (rgb & 0xff0000) >> 16;
g = (rgb & 0x00ff00) >> 8;
b = (rgb & 0x0000ff);
glClearColor(r / 255.0, g / 255.0, b / 255.0, 1.0);
}
static void display(seq16_d *seq)
{
int x;
int y = 0;
glClear(GL_COLOR_BUFFER_BIT);
color_rgb(0xC6E1C7);
for(y = 0; y < MAX_ROWS; y++) {
glRasterPos2i(4, 20 + 16 * y);
for(x = 0; x < 16; x++) {
glBitmap(16, 16, 0.0, 0.0, 16.0, 0.0, rasters
+ seq->grid[16 * y + x]);
}
}
glFlush();
}
void init(void)
{
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
clear_color_rgb(0x1c2933);
}
void reshape(int w, int h)
{
glViewport(0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, w, h, 0, -1.0, 1.0);
glMatrixMode(GL_MODELVIEW);
}
void idle()
{
}
void errorcb(int error, const char* desc)
{
printf("GLFW error %d: %s\n", error, desc);
}
static void key(GLFWwindow* window, int key, int scancode, int action, int mods)
{
seq16_d *seq = glfwGetWindowUserPointer(window);
if(action == GLFW_PRESS) {
switch(key) {
case GLFW_KEY_L:
seq16_move_right(seq);
seq16_tick(seq);
break;
case GLFW_KEY_H:
seq16_move_left(seq);
seq16_tick(seq);
break;
case GLFW_KEY_J:
seq16_move_down(seq);
seq16_tick(seq);
break;
case GLFW_KEY_K:
seq16_move_up(seq);
seq16_tick(seq);
break;
case GLFW_KEY_SPACE:
seq16_toggle(seq);
seq16_tick(seq);
break;
case GLFW_KEY_1:
seq16_set_skip(seq, 1);
seq16_tick(seq);
break;
case GLFW_KEY_2:
seq16_set_skip(seq, 2);
seq16_tick(seq);
break;
case GLFW_KEY_3:
seq16_set_skip(seq, 3);
seq16_tick(seq);
break;
case GLFW_KEY_4:
seq16_set_skip(seq, 4);
seq16_tick(seq);
break;
case GLFW_KEY_5:
seq16_set_skip(seq, 5);
seq16_tick(seq);
break;
case GLFW_KEY_6:
seq16_set_skip(seq, 6);
seq16_tick(seq);
break;
case GLFW_KEY_7:
seq16_set_skip(seq, 7);
seq16_tick(seq);
break;
case GLFW_KEY_8:
seq16_set_skip(seq, 8);
seq16_tick(seq);
break;
case GLFW_KEY_9:
seq16_set_skip(seq, 9);
seq16_tick(seq);
break;
case GLFW_KEY_S:
seq16_save(seq);
break;
}
}
}
static void * run_loop(void *ud)
{
seq16_d *seq = (seq16_d *)ud;
int w, h;
if (!glfwInit()) {
printf("Failed to init GLFW.");
pthread_exit(NULL);
}
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
seq->window = glfwCreateWindow(264, 88, "seq16", NULL, NULL);
if (!seq->window) {
glfwTerminate();
pthread_exit(NULL);
}
glfwSetKeyCallback(seq->window, key);
glfwSetErrorCallback(errorcb);
glfwMakeContextCurrent(seq->window);
glfwSwapInterval(0);
glfwSetTime(0);
init();
glfwSetWindowUserPointer(seq->window, seq);
while(seq->run) {
glfwGetFramebufferSize(seq->window, &w, &h);
glfwPollEvents();
glViewport(0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, w, h, 0, -1.0, 1.0);
glMatrixMode(GL_MODELVIEW);
if(seq->please_tick) {
display(seq);
seq->please_tick = 0;
}
glfwSwapBuffers(seq->window);
usleep(8000);
}
glfwTerminate();
pthread_exit(0);
return NULL;
}
void seq16_start(seq16_d *seq, const char *filename)
{
int i;
seq->run = 1;
seq->please_tick = 1;
seq->playhead= -1;
seq->pos = 16;
seq->skip = 1;
seq->filename = filename;
for(i = 0; i < MAX_ROWS * 16; i++) {
if(i < 16) {
seq->grid[i] = EMPTY;
} else {
seq->grid[i] = NOTE_OFF;
}
}
seq16_load(seq);
seq16_set_pos(seq, seq->pos);
pthread_create(&seq->thread, NULL, run_loop, seq);
}
void seq16_stop(seq16_d *seq)
{
seq->run = 0;
pthread_join(seq->thread, NULL);
}
void seq16_tick(seq16_d *seq)
{
seq->please_tick = 1;
}
void seq16_set_playhead(seq16_d *seq, int pos)
{
if(seq->playhead >= 0) {
seq->grid[seq->playhead] = EMPTY;
}
seq->grid[pos] = TRIANGLE;
seq->playhead= pos;
}
void seq16_set_skip(seq16_d *seq, int skip)
{
seq->skip = skip;
}
void seq16_set_pos(seq16_d *seq, int pos)
{
int old;
int new;
switch(seq->grid[seq->pos]) {
case SELECT_ON:
old = NOTE_ON;
break;
case SELECT_OFF:
old = NOTE_OFF;
break;
}
switch(seq->grid[pos]) {
case SELECT_ON:
case NOTE_ON:
new = SELECT_ON;
break;
case SELECT_OFF:
case NOTE_OFF:
new = SELECT_OFF;
break;
}
seq->grid[seq->pos] = old;
seq->grid[pos] = new;
seq->pos = pos;
}
void seq16_move_right(seq16_d *seq)
{
int new_pos;
new_pos = (seq->pos + seq->skip);
if(new_pos > MAX_ROWS * 16 - 1) new_pos = 16;
seq16_set_pos(seq, new_pos);
}
void seq16_move_left(seq16_d *seq)
{
int new_pos;
new_pos = (seq->pos - seq->skip);
if(new_pos < 16) {
new_pos = (MAX_ROWS * 16) - 1;
}
seq16_set_pos(seq, new_pos);
}
void seq16_move_up(seq16_d *seq)
{
int new_pos;
new_pos = seq->pos - 16;
if(new_pos < 16) {
new_pos = seq->pos + (MAX_ROWS - 2) * 16;
}
seq16_set_pos(seq, new_pos);
}
void seq16_move_down(seq16_d *seq)
{
int new_pos;
new_pos = seq->pos + 16;
if(new_pos > MAX_ROWS * 16 - 1) {
new_pos = (seq->pos % 16) + 16;
}
seq16_set_pos(seq, new_pos);
}
void seq16_move_playhead(seq16_d *seq)
{
seq16_set_playhead(seq, (seq->playhead + 1) % 16);
seq16_tick(seq);
}
void seq16_toggle(seq16_d *seq)
{
int *grid;
grid = &seq->grid[seq->pos];
switch(*grid) {
case SELECT_ON:
*grid = SELECT_OFF;
break;
case SELECT_OFF:
*grid = SELECT_ON;
break;
}
}
void seq16_update_ftbl(seq16_d *seq)
{
int i;
for(i = 0; i < 4; i++) {
switch(seq->grid[16 + i * 16 + seq->playhead]) {
case SELECT_ON:
case NOTE_ON:
seq->ft->tbl[i] = 1.0;
break;
case SELECT_OFF:
case NOTE_OFF:
seq->ft->tbl[i] = 0.0;
break;
}
}
}
void seq16_save(seq16_d *seq)
{
int i;
sp_audio spa;
SPFLOAT buf[4 * 16];
spa_open(seq->pd->sp, &spa, seq->filename, SPA_WRITE);
for(i = 0; i < 4 * 16; i++) {
switch(seq->grid[16 + i]) {
case SELECT_ON:
case NOTE_ON:
buf[i] = 1.0;
break;
case SELECT_OFF:
case NOTE_OFF:
buf[i] = 0.0;
break;
}
}
spa_write_buf(seq->pd->sp, &spa, buf, 4 * 16);
spa_close(&spa);
plumber_print(seq->pd, "seq16: wrote file to %s\n", seq->filename);
}
void seq16_load(seq16_d *seq)
{
int i;
int rc;
sp_audio spa;
SPFLOAT buf[4 * 16];
rc = spa_open(seq->pd->sp, &spa, seq->filename, SPA_READ);
if(rc == SP_NOT_OK) {
return;
}
plumber_print(seq->pd, "seq16: loading file %s\n", seq->filename);
spa_read_buf(seq->pd->sp, &spa, buf, 4 * 16);
for(i = 0; i < 4 * 16; i++) {
if(buf[i] != 0.0) {
seq->grid[16 + i] = NOTE_ON;
} else {
seq->grid[16 + i] = NOTE_OFF;
}
}
spa_close(&spa);
}
static int sporth_seq16(plumber_data *pd, sporth_stack *stack, void **ud)
{
seq16_d *seq;
SPFLOAT in;
char *str;
char *filename;
switch(pd->mode) {
case PLUMBER_CREATE:
seq = malloc(sizeof(seq16_d));
*ud = seq;
str = sporth_stack_pop_string(stack);
filename = sporth_stack_pop_string(stack);
sporth_stack_pop_float(stack);
seq->pd = pd;
sp_ftbl_create(pd->sp, &seq->ft, 4);
plumber_ftmap_add(pd, str, seq->ft);
break;
case PLUMBER_INIT:
seq = *ud;
sporth_stack_pop_string(stack);
filename = sporth_stack_pop_string(stack);
sporth_stack_pop_float(stack);
seq16_start(seq, filename);
break;
case PLUMBER_COMPUTE:
seq = *ud;
in = sporth_stack_pop_float(stack);
if(in != 0) {
seq16_move_playhead(seq);
seq16_update_ftbl(seq);
}
break;
case PLUMBER_DESTROY:
seq = *ud;
seq16_stop(seq);
free(seq);
break;
}
return PLUMBER_OK;
}
plumber_dyn_func sporth_return_ugen()
{
return sporth_seq16;
}