/*
    Instru2Light - Illumine un instrument de musique en temps réel
    Copyright (C) 2012-2013 Ludovic Pouzenc <lpouzenc@gmail.com>    

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
#include <gtk/gtk.h>
#include <stdlib.h>
#include <pthread.h>
#include "gtkvumeter.h"
#include "win_main.h"
#include "compute.h"
#include "capture.h"
#include "hsv2rgb.h"
#include "illuminate.h"

gint *audio_vumeter_val, *light_h, *light_s, *light_v, *light_r, *light_g, *light_b; 
void my_process(float *data, size_t nsamples, size_t nchan);

int main (int argc, char **argv) {
	int dmx_init_res;

	GtkWidget *mainwin;
	gint vals_for_vumeters[7]={0,0,0,0,0,0,0}; //sound,h,s,v,r,g,b
	//Some handy references to the previous array items to make things clear whenever possible
	audio_vumeter_val=vals_for_vumeters+0;
	light_h=vals_for_vumeters+1;
	light_s=vals_for_vumeters+2;
	light_v=vals_for_vumeters+3;
	light_r=vals_for_vumeters+4;
	light_g=vals_for_vumeters+5;
	light_b=vals_for_vumeters+6;

	pthread_t audio_analyzer;

	g_thread_init(NULL);
	gdk_threads_init();
	gdk_threads_enter();
	gtk_init (&argc, &argv);

	mainwin=win_main_build();
	gtk_widget_show_all (mainwin);

	dmx_init_res=dmx_init();

	printf("debug : main my_process==%p\n", my_process);
	printf("debug : main (void *)my_process==%p\n", (void *)my_process);
	pthread_create (&audio_analyzer, (void *)NULL, (void *)audio_thread, (void *)my_process);
	g_timeout_add (25, win_main_update_vumeters, (gpointer)vals_for_vumeters);

	gtk_main ();

	gdk_threads_leave();

	if (dmx_init_res==0) dmx_deinit();

	return 0;
}

void my_process(float *data, size_t nsamples, size_t nchan) {

	float sound_level;
	struct hsv_colour hsv;
	struct rgb_colour rgb;

	//FIXME : rate should came from PulseAudio
	sound_level=compute_level(data, nsamples, 44100); //FIXME : no fixed rate here !

//	printf("sound_level==%+8f nsamples==%8i\n", sound_level, nsamples);

	// Update sound vumeter value (refreshed asynchronously)
	*audio_vumeter_val=(int)sound_level;

	// Transfert Function
	audio2hsv_1(sound_level,&(hsv.h),&(hsv.s),&(hsv.v));
	
	// Conversion
	hsv2rgb(&hsv, &rgb);
//	printf("hsv %+.3f %+.3f %+.3f\n", hsv.h, hsv.s, hsv.v);
//	printf("rgb %+.3f %+.3f %+.3f\n", rgb.r, rgb.g, rgb.b);

	//Update vu-meters
	*light_h=hsv.h*255;
	*light_s=hsv.s*255;
	*light_v=hsv.v*255;

	*light_r=rgb.r*255;
	*light_g=rgb.g*255;
	*light_b=rgb.b*255;
	
	// Send to DMX
	dmx_write_rgb(*light_r, *light_g, *light_b);
}