winamp/Src/Winamp/draw_sa.cpp

/** (c) Nullsoft, Inc.         C O N F I D E N T I A L
 ** Filename: 
 ** Project:
 ** Description:
 ** Author:
 ** Created:
 **/
#include "Main.h"
#include "draw.h"
#include "WADrawDC.h"

unsigned char *specData;
int sa_safe=0;
int sa_kill=1;

void draw_sa(unsigned char *values, int draw)
{
	static int bx[75];
	static int t_bx[75];
	static float t_vx[75];
	int x;
	int fo[5] = {3, 6, 12, 16, 32 };
	float pfo[5]={1.05f,1.1f,1.2f,1.4f,1.6f};
	int dbx;
	float spfo;

	int ws=(config_windowshade&&config_mw_open);
	int s = (config_dsize&&config_mw_open)?1:0;
	unsigned char *gmem;

	dbx = fo[max(min(config_safalloff,4),0)];
	spfo=pfo[max(min(config_sa_peak_falloff,4),0)];
	sa_safe++;
	if (sa_kill || !draw_initted || !specData)
	{
		sa_safe--;
		return ;
	}

	if (s && draw)
	{
		int y;
		gmem = specData;
		if (!ws)
		{
			for (y = 0; y < 8; y++) 
			{
				int *smem = (int *) gmem;
				for (int x = 0; x < 76; x ++)
					*smem++ = 0x0101;
				gmem += 76*2*2;
				memset(gmem,0,76*2*2);
				gmem += 76*2*2;
			}
		}
		else
		{
			gmem += 76*2*(32-10);
			for (y = 0; y < 10; y++) 
			{
				memset(gmem,0,76);
				gmem += 76*2;
			}
		}
	} 
	else if (draw)
	{
		int y;
		gmem = specData+76*2*16;
		if (!ws)
		{
			for (y = 0; y < 8; y++) 
			{
				int *smem = (int *) gmem;
				for (int x = 0; x < 76/4; x ++)
					*smem++ = 0x10001;
				gmem += 76*2;
				memset(gmem,0,76);
				gmem += 76*2;
			}
		}
		else
		{
			gmem += 76*2*(16-5);
			for (y = 0; y < 5; y++) 
			{
				memset(gmem,0,76/2);
				gmem += 76*2;
			}
		}
	}

	if (!values)
	{
		memset(bx,0,75*sizeof(int));
	}
	else if (!s) // singlesize
	{
		if (!ws) // non windowshade singlesize
		{
			if (config_sa == 2) // non windowshade singlesize oscilliscope
			{
				gmem = specData + 76*2*14;
				if (draw) 
				{
					int lv=-1;
					if (((config_safire>>2)&3)==0) for (x = 0; x < 75; x ++)
					{
						register int v; register char c;
						v = (((int) ((signed char *)values)[x])) + 8;
						if (v < 0) v = 0 ; if (v > 15) v = 15; c = v/2-4; if (c < 0) c = -c; c += 18;
						gmem[v*76*2] = c;
						gmem++;
					}
					else if (((config_safire>>2)&3)==1) for (x = 0; x < 75; x ++)
					{
						register int v,t; register char c;
						v = (((int) ((signed char *)values)[x])) + 8;
						if (v < 0) v = 0 ; if (v > 15) v = 15; c = v/2-4; if (c < 0) c = -c; c += 18;
						if (lv == -1) lv=v;
						t=lv;
						lv=v;
						if (v >= t) while (v >= t) gmem[v--*76*2] = c;
						else while (v < t) gmem[v++*76*2] = c;
						gmem++;
					}
					else if (((config_safire>>2)&3)==2) for (x = 0; x < 75; x ++) // solid
					{
						register int v; register char c;
						v = (((int) ((signed char *)values)[x])) + 8;
						if (v < 0) v = 0 ; if (v > 15) v = 15; c = v/2-4; if (c < 0) c = -c; c += 18;
						if (v > 7) while (v > 7) gmem[v--*76*2] = c;
						else while (v <= 7) gmem[v++*76*2] = c;
						gmem++;
					}
				}
			} 
			else // non windowshade singlesize spectrum analyzer
			{
				for (x = 0; x < 75; x ++)
				{
					register int y,v,t;
					t=x&~3;
					if (!(config_safire&32)) 
					{
						int a=values[t],b=values[t+1],c=values[t+2],d=values[t+3];
						v = a+b+c+d;//-min(a,min(b,min(c,d)));
						v/=4;
					}
					else v = (((int)values[x]));
					if (v > 15) v = 15;
					if ((v<<4) < bx[x]) v = (bx[x]-=dbx)>>4;
					else bx[x] = v<<4;
	 				if (bx[x] < 0) bx[x] = 0;
					if (v < 0) v = 0;
					gmem = specData + 76*2*14 + x;
					if ((config_safire&3)==1) t = v+2;
					else if ((config_safire&3)==2) t=17-(v);
					else t = 17;
			
					if (t_bx[x] <= v*256) {
						t_bx[x]=v*256;
						t_vx[x]=3.0f;
					}
					if (draw && (config_safire&32 || (x&3)!=3)) 
					{
						if ((config_safire&3)!=2) for (y = 0; y < v; y ++)
						{
							*gmem = t-y;
							gmem += 76*2;
						}
						else for (y = 0; y < v; y ++)
						{
							*gmem = t;
							gmem += 76*2;
						}
						if (config_sa_peaks && t_bx[x]/256 >= 0 && t_bx[x]/256 <= 15)
						{
							specData[76*2*14 + (t_bx[x]/256)*76*2 + x]=23;
						}
					}
					t_bx[x] -= (int)t_vx[x];
					t_vx[x] *= spfo;
					if (t_bx[x] < 0) t_bx[x]=0;
				}
			}
		}
		else // windowshade singlesize
		{
			if (config_sa==1)  // windowshade singlesize spectrum analyzer
			{
				gmem = specData+76*2*(32-5);
				for (x = 0; x < 37; x ++)
				{
					register int y,v,t;
					t=((x)&~3)*2;
					if (!(config_safire&32)) 
					{
						int a=values[t],b=values[t+1],c=values[t+2],d=values[t+3];
						v = a+b+c+d;//-min(a,min(b,min(c,d)));
  						v/=4;
					}
					else v = (((int)values[x*2])+((int)values[x*2+1]))/2;
					if (v > 15) v = 15;
					if ((v<<4) < bx[x*2]) v = (bx[x*2]-=dbx)>>4;
					else bx[x*2] = v<<4;
	 				if (bx[x*2] < 0) bx[x*2] = 0;
					if (v < 0) v = 0;
					gmem = specData + 76*2*(32-5) + x;
					if ((config_safire&3)==1) t = v+2;
					else if ((config_safire&3)==2) t=17-(v);
					else t = 17;
			
					if (t_bx[x*2] <= v*256) {
						t_bx[x*2]=v*256;
						t_vx[x*2]=3.0f;
					}
					v = (v * 5)/15;
					if (v > 5) v=5;
					if (draw && (config_safire&32 || (x&3)!=3)) 
					{
						int poo=(t_bx[x*2]*5)/15/256;
						if ((config_safire&3)!=2) for (y = 0; y < v; y ++)
						{
							*gmem = t-(y*15)/5;
							gmem += 76*2;
						}
						else for (y = 0; y < v; y ++)
						{
							*gmem = t;
							gmem += 76*2;
						}            
						if (config_sa_peaks && poo >= 0 && poo <= 4)
						{
							specData[76*2*(32-5) + poo*76*2 + x]=23;
						}
					}
					t_bx[x*2] -= (int)t_vx[x*2];
					t_vx[x*2] *= spfo;
					if (t_bx[x*2] < 0) t_bx[x*2]=0;
				}
			}
			else if (config_sa == 2)  // windowshade singlesize oscilliscope 
			{
				int wm=((config_safire>>2)&3);
				int lastv=-5;
				gmem = specData+76*2*(32-5);
				for (x = 0; x < 38; x ++)
				{
					int v = (((int) ((signed char *)values)[x])) + 8;
					v *= 5;
					v /= 16;
					if (v < 0) v = 0 ; if (v > 4) v = 4;
					if (wm==0 || lastv==-5)
					{
						lastv=v;
						gmem[x+v*76*2] = 18;
					}
					else if (wm == 1)
					{
						int tmp=lastv;
						lastv=v;
						if (v >= tmp) while (v>=tmp) { gmem[x+v--*76*2] = 18; }
						else while (v<=tmp) { gmem[x+v++*76*2] = 18; }
					}
					else if (wm == 2)
					{
						if (v >= 2) while (v>=2) { gmem[x+v--*76*2] = 18; }
						else while (v<=2) { gmem[x+v++*76*2] = 18; }
					}
				}
			}
		}
	}
	else // doublesize
	{
		if (!ws)
		{
			if (config_sa == 2)
			{
				gmem = specData;// + 76*2*16;
				if (draw) 
				{
					int lv=-1;
					if (((config_safire>>2)&3)==0) for (x = 0; x < 75*2; x += 2)
					{
						register int v;	register char c;
						v = (((int) ((signed char *)values)[x/2])) + 8;
						if (v < 0) v = 0; if (v > 15) v = 15; c = v/2-4; if (c < 0) c = -c; c += 18;
						gmem[v*76*2*2] = c;	gmem++[v*76*2*2 + 76*2] = c;
						gmem[v*76*2*2] = c;	gmem++[v*76*2*2 + 76*2] = c;
					}
					else if (((config_safire>>2)&3)==1) for (x = 0; x < 75*2; x += 2)
					{
						register int v,t;	register char c;
						v = (((int) ((signed char *)values)[x/2])) + 8;
						if (v < 0) v = 0; if (v > 15) v = 15; c = v/2-4; if (c < 0) c = -c; c += 18;
						if (lv == -1) lv=v;
						t=lv;
						lv=v;
						if (v >= t) while (v >= t) 
						{
							gmem[v*76*2*2] = c;
							gmem[v*76*2*2 + 76*2] = c;
							gmem[v*76*2*2 + 1] = c;
							gmem[v*76*2*2 + 76*2 + 1] = c;
							v--;
						}
						else while (v < t)
						{
							gmem[v*76*2*2] = c;
							gmem[v*76*2*2 + 76*2] = c;
							gmem[v*76*2*2 + 1] = c;
							gmem[v*76*2*2 + 76*2 + 1] = c;
							v++;
						}
						gmem+=2;
					}
					else if (((config_safire>>2)&3)==2) for (x = 0; x < 75*2; x += 2)
					{
						register int v;	register char c;
						v = (((int) ((signed char *)values)[x/2])) + 8;
						if (v < 0) v = 0; if (v > 15) v = 15; c = v/2-4; if (c < 0) c = -c; c += 18;
						if (v > 7) while (v > 7) 
						{
							gmem[v*76*2*2] = c;
							gmem[v*76*2*2 + 76*2] = c;
							gmem[v*76*2*2 + 1] = c;
							gmem[v*76*2*2 + 76*2 + 1] = c;
							v--;
						}
						else while (v <= 7)
						{
							gmem[v*76*2*2] = c;
							gmem[v*76*2*2 + 76*2] = c;
							gmem[v*76*2*2 + 1] = c;
							gmem[v*76*2*2 + 76*2 + 1] = c;
							v++;
						}
						gmem+=2;
					}
				}
			} 
			else
			{
				for (x = 0; x < 75*2;)
				{
					register int y,v, t;
					t=(x/2)&~3;
					if (!(config_safire&32)) 
					{
						int a=values[t],b=values[t+1],c=values[t+2],d=values[t+3];
						v = a+b+c+d;//-min(a,min(b,min(c,d)));
						v/=4;
					}
					else v = (((int)values[x/2]));
					if (v > 15) v = 15;
					if ((v<<4) < bx[x/2]) v = (bx[x/2]-=dbx)>>4;
					else bx[x/2] = v<<4;
	 				if (bx[x/2] < 0) bx[x/2] = 0;
					if (v < 0) v = 0;
					gmem = specData+x;
					if ((config_safire&3)==1) t = v+2;
					else if ((config_safire&3)==2) t = 17 - v;
					else t = 17;
					if (t_bx[x/2] <= v*256) {
						t_bx[x/2]=v*256;
						t_vx[x/2]=3.0f;
					}
					v*=2;
					if (draw && (config_safire&32 || ((x/2)&3)!=3)) 
					{
						if ((config_safire&3)!=2) for (y = 0; y < v; y ++)
						{
							gmem[0] = gmem[1] = t-y/2;
							gmem += 76*2;
						}
						else for (y = 0; y < v; y ++)
						{
							gmem[0] = gmem[1] = t;
							gmem += 76*2;
						}
						if (config_sa_peaks && t_bx[x/2]/256 > 0 && t_bx[x/2]/256 <= 15)
						{
							specData[(t_bx[x/2]/256)*76*4 + x]=specData[(t_bx[x/2]/256)*76*4 + x+1]=23;
							specData[(t_bx[x/2]/256)*76*4 + x + 76*2]=specData[(t_bx[x/2]/256)*76*4 + x+1+ 76*2]=23;
						}
					}
					t_bx[x/2] -= (int)t_vx[x/2];
					t_vx[x/2] *=spfo;
					if (t_bx[x/2] < 0) t_bx[x/2]=0;
					x+=2;
				}
			}
		}
		else
		{
			if (config_sa == 2) // doublesize window shade scope
			{
				int wm=((config_safire>>2)&3);
				int lastv=-5;
				gmem = specData+76*2*(32-10);
				for (x = 0; x < 75; x ++)
				{
					int v = (((int) ((signed char *)values)[x])) + 8;
					v *= 10;
					v /= 16;
					if (v < 0) v = 0 ; if (v > 9) v = 9;
					if (wm==0 || lastv==-5)
					{
						lastv=v;
						gmem[x+v*76*2] = 18;
					}
					else if (wm == 1)
					{
						int tmp=lastv;
						lastv=v;
						if (v >= tmp) while (v>=tmp) { gmem[x+v--*76*2] = 18; }
						else while (v<=tmp) { gmem[x+v++*76*2] = 18; }
					}
					else if (wm == 2)
					{
						if (v >= 4) while (v>=4) { gmem[x+v--*76*2] = 18; }
						else while (v<=4) { gmem[x+v++*76*2] = 18; }
					}
				}
			}
			if (config_sa == 1) { // doublesize window shade spectrum
				for (x = 0; x < 75; x ++)
				{
					register int y,v,t;
					t=(x)&~3;
					if (!(config_safire&32)) 
					{
						int a=values[t],b=values[t+1],c=values[t+2],d=values[t+3];
						v = a+b+c+d;//-min(a,min(b,min(c,d)));
  						v/=4;
					}
					else v = (int)values[x];
					if (v > 15) v = 15;
					if ((v<<4) < bx[x]) v = (bx[x]-=dbx)>>4;
					else bx[x] = v<<4;
	 				if (bx[x] < 0) bx[x] = 0;
					if (v < 0) v = 0;
					gmem = specData + 76*2*(32-10) + x;
					if ((config_safire&3)==1) t = v+2;
					else if ((config_safire&3)==2) t=17-(v);
					else t = 17;
			
					if (t_bx[x] <= v*256) {
						t_bx[x]=v*256;
						t_vx[x]=3.0f;
					}
					v = (v * 10)/15;
					if (draw && (config_safire&32 || (x&3)!=3)) 
					{
						int poo=(t_bx[x]*10)/15/256;
						if ((config_safire&3)!=2) for (y = 0; y < v; y ++)
						{
							*gmem = t-(y*15)/10;
							gmem += 76*2;
						}
						else for (y = 0; y < v; y ++)
						{
							*gmem = t;
							gmem += 76*2;
						}            
						if (config_sa_peaks && poo >= 0 && poo <= 9)
						{
							specData[76*2*(32-10) + poo*76*2 + x]=23;
						}
					}
					t_bx[x] -= (int)t_vx[x];
					t_vx[x] *= spfo;
					if (t_bx[x] < 0) t_bx[x]=0;
				}
			}
		}
	}

	if (draw)
	{
		if (config_mw_open && hVisWindow)
		{
			WADrawDC myDC(hVisWindow);
			if (myDC)
			{
				do_palmode(myDC);
				if(values)
				{
					if (!ws) BitBlt(myDC,0,0,76<<s,16<<s,specDC,0,0,SRCCOPY);
					else BitBlt(myDC,0,0,38<<s,5<<s,specDC,0,0,SRCCOPY);
				}
				else
				{
					InvalidateRect(hMainWindow,NULL,FALSE);
				}
			}
		}
		else if (config_pe_open && config_pe_width >= 350 && config_pe_height != 14 && hPLVisWindow)
		{
			if (hPLWindow)
			{
				WADrawDC myDC(hPLVisWindow);
				if (myDC)
				{
					do_palmode(myDC);
					if(values)
						BitBlt(myDC,0,0,72,16,specDC,0,0,SRCCOPY);
					else
						InvalidateRect(hPLWindow,NULL,FALSE);
				}
			}
		}
	}
	sa_safe--;
}