#include <stdlib.h>
#include <stdio.h>
#include <gtk/gtk.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include "track.h"

gint gdrdao_get_track_length(gchar* _file, gint* _mm, gint* _ss, gint* _ff) {
	gchar type;
	if(_file==NULL) return 1;
	type=0; /* 0=wav 1=raw */
	if(strlen(_file)<=4) {
		type=1;
	} else {
		if( (_file[strlen(_file)-1]=='v'||_file[strlen(_file)-1]=='V')
		  &&(_file[strlen(_file)-2]=='a'||_file[strlen(_file)-2]=='A')
		  &&(_file[strlen(_file)-3]=='w'||_file[strlen(_file)-3]=='W')
		  &&(_file[strlen(_file)-4]=='.')) type=0;
	};
	
	if(type==0) {
		gdrdao_get_track_length_wav_(_file,_mm,_ss,_ff);
		return 0;
	};
	if(type==1) {
		gdrdao_get_track_length_raw_(_file,_mm,_ss,_ff);
		return 0;
	};
	return 1; /* can't reach this point, actually */
};



/* get track length of a raw file:
 * 44100 sampling * 2 bytes * 2 stereo = 176400 bytes per second
 * 				       = 2352 bytes per frame
 */
gint gdrdao_get_track_length_raw_(gchar* _file, gint* _mm, gint* _ss,
		gint* _ff) {
	struct stat buf;
	float tmp;
	gint qtmp;
	if(_file==NULL||_mm==NULL||_ss==NULL||_ff==NULL) return 1;
	if(stat(_file,&buf)!=0) return 1;
	
	tmp=(float)buf.st_size/(float)2352; /* tmp now holds 'frames' */
	*_mm=tmp/4500; /* 4500 frames/minute */
	qtmp=(gint)tmp%4500;
	*_ss=qtmp/75;   /* 75 frames/second */
	*_ff=qtmp%75;
	return 0;
};

/* adjust this!!! */

gint gdrdao_get_track_length_wav_(gchar* _file, gint* _mm, gint* _ss,
		                gint* _ff) {
        struct stat buf;
        float tmp;
	gint qtmp;
        if(_file==NULL||_mm==NULL||_ss==NULL||_ff==NULL) return 1;
        if(stat(_file,&buf)!=0) return 1;

        tmp=(float)buf.st_size/(float)2352; /* tmp now holds 'frames' */
        *_mm=tmp/4500; /* 4500 frames/minute */
        qtmp=(gint)tmp%4500;
        *_ss=qtmp/75;   /* 75 frames/second */
        *_ff=qtmp%75;
        return 0;
};


gint gdrdao_get_track_length_high(struct gdrdao_trackentry* _use) {
	if (_use==NULL) return 1;

	if(_use->endmin==0&&_use->endsec==0&&_use->endfrm==0) {
		gdrdao_get_track_length(_use->trackfile,&_use->lmin,
				&_use->lsec,&_use->lfrm);
	} else {
		_use->lmin=_use->endmin; _use->lsec=_use->endsec;
		_use->lfrm=_use->endfrm;
	};
	if(gdrdao_sub_ttime(&_use->lmin,&_use->lsec,&_use->lfrm,_use->strmin,
			_use->strsec,_use->strfrm)!=0) abort();;
	return 0;
};