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loop_editor.c
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#include "t3f/t3f.h"
#include "t3f/music.h"
#include <allegro5/allegro_native_dialog.h>
#define LE_PROGRESS_Y 60.0
#define LE_ZOOM_Y 180.0
ALLEGRO_FILECHOOSER * le_file_selector = NULL;
ALLEGRO_FONT * le_font = NULL;
const char * le_filename = NULL;
char le_config_filename[PATH_MAX] = {0};
float le_music_pos = 0.0;
float le_music_length = 0.0;
float le_loop_start = 0.0;
float le_loop_end = 0.0;
float le_loop_range_start = 0.0;
float le_loop_range_end = 0.0;
bool le_loop_enabled = true;
void le_logic(void * data)
{
float amount = 0.001;
if(t3f_key_pressed(ALLEGRO_KEY_ESCAPE))
{
t3f_exit();
}
if(t3f_key_held(ALLEGRO_KEY_LCTRL))
{
amount = 1.0;
}
if(t3f_key_pressed(ALLEGRO_KEY_OPENBRACE))
{
if(t3f_key_held(ALLEGRO_KEY_LSHIFT))
{
le_loop_start -= amount;
}
else
{
le_loop_end -= amount;
}
al_set_audio_stream_loop_secs(t3f_stream, le_loop_start, le_loop_end);
t3f_use_key_press(ALLEGRO_KEY_OPENBRACE);
}
if(t3f_key_pressed(ALLEGRO_KEY_CLOSEBRACE))
{
if(t3f_key_held(ALLEGRO_KEY_LSHIFT))
{
le_loop_start += amount;
}
else
{
le_loop_end += amount;
}
al_set_audio_stream_loop_secs(t3f_stream, le_loop_start, le_loop_end);
t3f_use_key_press(ALLEGRO_KEY_CLOSEBRACE);
}
if(t3f_key_pressed(ALLEGRO_KEY_L))
{
le_loop_enabled = !le_loop_enabled;
t3f_use_key_press(ALLEGRO_KEY_L);
}
le_loop_range_start = le_loop_end - 5.0;
if(le_loop_range_start < le_loop_start)
{
le_loop_range_start = le_loop_start;
}
le_loop_range_end = le_loop_start + 5.0;
if(le_loop_range_end > le_loop_end)
{
le_loop_range_end = le_loop_end;
}
le_music_pos = al_get_audio_stream_position_secs(t3f_stream);
if(le_loop_enabled && le_music_pos > le_loop_range_end && le_music_pos < le_loop_range_start)
{
al_seek_audio_stream_secs(t3f_stream, le_loop_range_start);
}
}
void le_render(void * data)
{
float ox;
al_clear_to_color(al_map_rgba_f(0.0, 0.0, 0.25, 1.0));
/* render overall view */
al_draw_filled_rectangle(16.0, LE_PROGRESS_Y - 2.0, 640.0 - 16.0 - 1.0, LE_PROGRESS_Y + 2.0, al_map_rgba_f(0.0, 0.0, 0.0, 1.0));
ox = (le_loop_start / le_music_length) * (640.0 - 32.0);
if(le_loop_enabled)
{
al_draw_line(16.0 + ox + 0.5, LE_PROGRESS_Y - 8.0, 16.0 + ox + 0.5, LE_PROGRESS_Y + 8.0, al_map_rgba_f(1.0, 0.0, 0.0, 1.0), 1.0);
}
al_draw_textf(le_font, al_map_rgba_f(1.0, 1.0, 1.0, 1.0), 16.0 + ox, LE_PROGRESS_Y - 8.0 - al_get_font_line_height(le_font), ALLEGRO_ALIGN_CENTRE, "%3.3f", le_loop_start);
ox = (le_loop_end / le_music_length) * (640.0 - 32.0);
if(le_loop_enabled)
{
al_draw_line(16.0 + ox + 0.5, LE_PROGRESS_Y - 8.0, 16.0 + ox + 0.5, LE_PROGRESS_Y + 8.0, al_map_rgba_f(1.0, 0.0, 0.0, 1.0), 1.0);
}
al_draw_textf(le_font, al_map_rgba_f(1.0, 1.0, 1.0, 1.0), 16.0 + ox, LE_PROGRESS_Y - 8.0 - al_get_font_line_height(le_font), ALLEGRO_ALIGN_CENTRE, "%3.3f", le_loop_end);
ox = (le_music_pos / le_music_length) * (640.0 - 32.0);
al_draw_line(16.0 + ox + 0.5, LE_PROGRESS_Y - 8.0, 16.0 + ox + 0.5, LE_PROGRESS_Y + 8.0, al_map_rgba_f(0.0, 1.0, 0.0, 1.0), 1.0);
}
bool le_initialize(void)
{
ALLEGRO_PATH * path = NULL;
ALLEGRO_CONFIG * config = NULL;
const char * val;
if(!t3f_initialize("T3F Loop Editor", 640, 240, 60.0, le_logic, le_render, T3F_USE_KEYBOARD | T3F_USE_MOUSE | T3F_USE_SOUND, NULL))
{
return false;
}
le_font = al_load_bitmap_font("fonts/basic_font.png");
if(!le_font)
{
return false;
}
le_file_selector = al_create_native_file_dialog(le_filename, "Select music file", "*.*;*.ogg", ALLEGRO_FILECHOOSER_FILE_MUST_EXIST);
if(!le_file_selector)
{
return false;
}
al_show_native_file_dialog(t3f_display, le_file_selector);
if(al_get_native_file_dialog_count(le_file_selector) < 1)
{
return false;
}
le_filename = al_get_native_file_dialog_path(le_file_selector, 0);
if(!le_filename)
{
return false;
}
t3f_play_music(le_filename);
al_rest(1.0);
le_music_length = al_get_audio_stream_length_secs(t3f_stream);
le_loop_end = le_music_length;
path = al_create_path(le_filename);
if(path)
{
al_set_path_extension(path, ".ini");
strcpy(le_config_filename, al_path_cstr(path, '/'));
config = al_load_config_file(le_config_filename);
if(config)
{
val = al_get_config_value(config, "loop", "start");
if(val)
{
le_loop_start = atof(val);
}
val = al_get_config_value(config, "loop", "end");
if(val)
{
le_loop_end = atof(val);
}
al_destroy_config(config);
}
}
le_loop_range_start = le_loop_end - 3.0;
if(le_loop_range_start < le_loop_start)
{
le_loop_range_start = le_loop_start;
}
le_loop_range_end = le_loop_start + 3.0;
if(le_loop_range_end > le_loop_end)
{
le_loop_range_end = le_loop_end;
}
return true;
}
void le_exit(void)
{
ALLEGRO_CONFIG * config = NULL;
char val[256];
config = al_load_config_file(le_config_filename);
if(!config)
{
config = al_create_config();
}
if(config)
{
sprintf(val, "%f", le_loop_start);
al_set_config_value(config, "loop", "start", val);
sprintf(val, "%f", le_loop_end);
al_set_config_value(config, "loop", "end", val);
al_save_config_file(le_config_filename, config);
al_destroy_config(config);
}
}
int main(int argc, char * argv[])
{
if(!le_initialize())
{
return -1;
}
t3f_run();
le_exit();
return 0;
}