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-rw-r--r--noatun-plugins/tyler/display.c481
1 files changed, 481 insertions, 0 deletions
diff --git a/noatun-plugins/tyler/display.c b/noatun-plugins/tyler/display.c
new file mode 100644
index 0000000..6b4f295
--- /dev/null
+++ b/noatun-plugins/tyler/display.c
@@ -0,0 +1,481 @@
+/*
+// Copyright (C) 2000 Julien Carme
+// Copyright (C) 2001 Neil Stevens <neil@qualityassistant.com>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License version 2, as
+// published by the Free Software Foundation.
+//
+// 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, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+#include "renderer.h"
+#include "main.h"
+#include "display.h"
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#include <SDL.h>
+
+
+SDL_Color color_table[NB_PALETTES][256];
+short current_colors[256];
+
+byte* surface1;
+byte* surface2;
+
+void generate_colors(void)
+{
+ int i,k;
+ float colors[NB_PALETTES][2][3]={{{1,1,1},{1,1,1}},
+ {{2,1.5,0},{0,0.5,2}},
+ {{0,1,2},{0,1,0}},
+ {{0,2,1},{0,0,1}},
+ {{2,0,0},{0,1,1}}};
+
+ for (k=0;k<NB_PALETTES;k++)
+ {
+ for ( i=0; i<128; i++ )
+ {
+ color_table[k][i].r = colors[k][0][0]*i;
+ color_table[k][i].g = colors[k][0][1]*i;
+ color_table[k][i].b = colors[k][0][2]*i;
+ }
+
+ for ( i=0; i<128; i++ )
+ {
+ color_table[k][i+128].r = colors[k][0][0]*127+colors[k][1][0]*i;
+ color_table[k][i+128].g = colors[k][0][1]*127+colors[k][1][1]*i;
+ color_table[k][i+128].b = colors[k][0][2]*127+colors[k][1][2]*i;
+ }
+ }
+}
+
+void change_color(int t2,int t1,int w)
+{
+ unsigned int i;
+
+ for (i=0;i<255;i++)
+ {
+ int r,g,b;
+ r = (color_table[t1][i].r*w+color_table[t2][i].r*(256-w) )>>11;
+ g = (color_table[t1][i].g*w+color_table[t2][i].g*(256-w) )>>10;
+ b = (color_table[t1][i].b*w+color_table[t2][i].b*(256-w) )>>11;
+ current_colors[i]=(r<<11)+(g<<5)+b;
+ }
+}
+
+void compute_surface(t_interpol* vector_field)
+{
+ int i,j;
+ int add_dest=0;
+ int add_src;
+ t_interpol *interpol;
+ register byte* ptr_pix;
+ int color;
+ byte* ptr_swap;
+
+ for (j=0;j<scr_par.height;j++)
+ {
+ for (i=0;i<scr_par.width;i++)
+ {
+ interpol=&vector_field[add_dest];
+ add_src=(interpol->coord & 0xFFFF)*scr_par.width+(interpol->coord>>16);
+ ptr_pix=&((byte*)surface1)[add_src];
+ color=(*(ptr_pix)*(interpol->weight>>24)
+ +*(ptr_pix+1)*((interpol->weight & 0xFFFFFF)>>16)
+ +*(ptr_pix+scr_par.width)*((interpol->weight & 0xFFFF)>>8)
+ +*(ptr_pix+scr_par.width+1)*(interpol->weight & 0xFF))>>8;
+
+ if (color>255)
+ surface2[add_dest]=255;
+ else
+ surface2[add_dest]=color;
+ add_dest++;
+ }
+ }
+
+ ptr_swap=surface1;
+ surface1=surface2;
+ surface2=ptr_swap;
+}
+
+void display_surface(void)
+{
+ int i,j;
+
+ if (scr_par.scale>1)
+ {
+ for (i=0;i<scr_par.height;i++)
+ {
+ short* pdest=(short*)(screen->pixels+i*screen->pitch*scr_par.scale);
+ byte* psrc=surface1+i*scr_par.width;
+
+ if (scr_par.scale==2)
+ {
+ for (j=1; j<scr_par.width; j++)
+ {
+ *pdest = current_colors[*psrc++];
+ pdest++;
+ *pdest = *(pdest-1);
+ pdest++;
+ }
+
+ memcpy(screen->pixels+i*screen->pitch*2+screen->pitch,
+ screen->pixels+i*screen->pitch*2,screen->pitch);
+ }
+/* else
+ {
+ for (j=1;j<scr_par.width;j++) {
+ *(pdest++)=current_colors[*psrc++];
+ *(pdest++)=*(pdest-1);
+ *(pdest++)=*(pdest-1);
+ }
+ memcpy(screen->pixels+i*screen->pitch*3+screen->pitch,
+ screen->pixels+i*screen->pitch*3,screen->pitch);
+ memcpy(screen->pixels+i*screen->pitch*3+screen->pitch*2,
+ screen->pixels+i*screen->pitch*3,screen->pitch);
+
+ }
+*/
+ }
+ }
+ else
+ {
+ byte* psrc=surface1;
+ for (i=0;i<scr_par.height;i++)
+ {
+ short* pdest=(short*)(screen->pixels+i*screen->pitch);
+ for (j=0;j<scr_par.width;j++)
+ *pdest++=current_colors[*psrc++];
+ }
+ }
+ SDL_UpdateRect(screen, 0, 0, 0, 0);
+}
+
+void blur(t_interpol* vector_field)
+{
+ compute_surface(vector_field);
+ display_surface();
+}
+
+void plot1(int x,int y,int c);
+void plot1(int x,int y,int c)
+{
+ if (x>0 && x<scr_par.width-3 && y>0 && y<scr_par.height-3)
+ assign_max(&(surface1)[x+y*scr_par.width],c);
+}
+
+void plot2(int x,int y,int c);
+void plot2(int x,int y,int c)
+{
+ int ty;
+
+ if (x>0 && x<scr_par.width-3 && y>0 && y<scr_par.height-3) {
+ ty = y*scr_par.width;
+ assign_max(&(surface1)[x+ty],c);
+ assign_max(&(surface1)[x+1+ty],c);
+ assign_max(&(surface1)[x+ty+scr_par.width],c);
+ assign_max(&(surface1)[x+1+ty+scr_par.width],c);
+ }
+}
+
+
+void plot3(int x,int y,int c);
+void plot3(int x,int y,int c)
+{
+ int ty;
+
+ if (x>0 && x<scr_par.width-3 && y>0 && y<scr_par.height-3) {
+ ty = y*scr_par.width;
+ assign_max(&(surface1)[x+ty],c/3);
+ assign_max(&(surface1)[x+1+ty],c>>1);
+ assign_max(&(surface1)[x+ty+scr_par.width],c>>1);
+ assign_max(&(surface1)[x+1+ty+scr_par.width],c);
+ assign_max(&(surface1)[x+ty+(scr_par.width<<1)],c/3);
+ assign_max(&(surface1)[x+2+ty+(scr_par.width<<1)],c/3);
+ assign_max(&(surface1)[x+1+ty+(scr_par.width<<1)],c>>1);
+ assign_max(&(surface1)[x+2+ty+scr_par.width],c>>1);
+ assign_max(&(surface1)[x+2+ty+scr_par.width],c/3);
+ }
+}
+
+#if 0
+void line(int x1,int y1,int x2,int y2,int c)
+{
+ int i,j;
+ float x,y,vx,vy,d;
+ const float step=1;
+
+ if (x1==x2 && y1==y2)
+ plot3(x1,y1,255);
+ else {
+ x=x1;
+ y=y1;
+ d=sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1));
+ vx=step*(x2-x1)/d;
+ vy=step*(y2-y1)/d;
+ for (i=0;i<(int)(d/step)+1;i++) {
+ plot1(x,y,c);
+ x+=vx;
+ y+=vy;
+ }
+ }
+}
+#endif
+
+#define SWAP(x,y) \
+ x = x + y; \
+ y = x - y; \
+ x = x - y;
+
+void line(int _x1, int _y1, int _x2, int _y2, int _c)
+{
+ int dx, dy, cxy, dxy;
+ /* calculate the distances */
+ dx = abs(_x1 - _x2);
+ dy = abs(_y1 - _y2);
+
+ cxy = 0;
+ if (dy > dx)
+ {
+ /* Follow Y axis */
+ if (_y1 > _y2)
+ {
+ SWAP(_y1, _y2);
+ SWAP(_x1, _x2);
+ }
+
+ if (_x1 > _x2)
+ dxy = -1;
+ else
+ dxy = 1;
+
+ for (_y1=_y1; _y1<_y2; _y1++)
+ {
+ cxy += dx;
+ if (cxy >= dy)
+ {
+ _x1+= dxy;
+ cxy -= dy;
+ }
+ plot1(_x1, _y1, _c);
+ }
+ }
+ else
+ {
+ /* Follow X axis */
+ if (_x1 > _x2)
+ {
+ SWAP(_x1, _x2);
+ SWAP(_y1, _y2);
+ }
+
+ if (_y1 > _y2)
+ dxy = -1;
+ else
+ dxy = 1;
+
+ for (_x1=_x1; _x1<_x2; _x1++)
+ {
+ cxy += dy;
+ if (cxy >= dx)
+ {
+ _y1+=dxy;
+ cxy -= dx;
+ }
+ plot1(_x1, _y1, _c);
+ }
+ }
+}
+
+struct sincos
+{
+ int i;
+ float *f;
+};
+
+/* Little optimization for cos/sin functions */
+static struct sincos cosw = { 0, NULL };
+static struct sincos sinw = { 0, NULL };
+
+void spectral(t_effect* current_effect,short data[2][512])
+{
+ int i, halfheight, halfwidth;
+ float old_y1,old_y2;
+ float _y1=(((data[0][0]+data[1][0])>>9)*current_effect->spectral_amplitude*scr_par.height)>>12;
+ float _y2=(((data[0][0]+data[1][0])>>9)*current_effect->spectral_amplitude*scr_par.height)>>12;
+ const int density_lines=5;
+ const int step=4;
+ const int shift=(current_effect->spectral_shift*scr_par.height)>>8;
+
+ if (cosw.i != scr_par.width || sinw.i != scr_par.width)
+ {
+ free(cosw.f);
+ free(sinw.f);
+ sinw.f = cosw.f = NULL;
+ sinw.i = cosw.i = 0;
+ }
+
+ if (cosw.i == 0 || cosw.f == NULL)
+ {
+ float halfPI = (float)PI/2;
+ cosw.i = scr_par.width;
+ cosw.f = malloc(sizeof(float)*scr_par.width);
+ for (i=0; i<scr_par.width;i+=step)
+ cosw.f[i] = cos((float)i/scr_par.width*PI+halfPI);
+ }
+
+ if (sinw.i == 0 || sinw.f == NULL)
+ {
+ float halfPI = (float)PI/2;
+ sinw.i = scr_par.width;
+ sinw.f = malloc(sizeof(float)*scr_par.width);
+ for (i=0; i<scr_par.width;i+=step)
+ sinw.f[i] = sin((float)i/scr_par.width*PI+halfPI);
+ }
+
+ if (current_effect->mode_spectre==3)
+ {
+ if (_y1<0)
+ _y1=0;
+
+ if (_y2<0)
+ _y2=0;
+ }
+
+ halfheight = scr_par.height >> 1;
+ halfwidth = scr_par.width >> 1;
+ for (i=step;i<scr_par.width;i+=step)
+ {
+ old_y1=_y1;
+ old_y2=_y2;
+ _y1=((data[1][(i<<9)/scr_par.width/density_lines]>>8)*
+ current_effect->spectral_amplitude*scr_par.height)>>12;
+ _y2=((data[0][(i<<9)/scr_par.width/density_lines]>>8)*
+ current_effect->spectral_amplitude*scr_par.height)>>12;
+
+ switch (current_effect->mode_spectre)
+ {
+ case 0:
+ line(i-step,halfheight+shift+old_y2,
+ i,halfheight+shift+_y2,
+ current_effect->spectral_color);
+ break;
+ case 1:
+ line(i-step,halfheight+shift+old_y1,
+ i,halfheight+shift+_y1,
+ current_effect->spectral_color);
+ line(i-step,halfheight-shift+old_y2,
+ i,halfheight-shift+_y2,
+ current_effect->spectral_color);
+ break;
+ case 2:
+ line(i-step,halfheight+shift+old_y1,
+ i,halfheight+shift+_y1,
+ current_effect->spectral_color);
+ line(i-step,halfheight-shift+old_y1,
+ i,halfheight-shift+_y1,
+ current_effect->spectral_color);
+ line(halfwidth+shift+old_y2,i-step,
+ halfwidth+shift+_y2,i,
+ current_effect->spectral_color);
+ line(halfwidth-shift+old_y2,i-step,
+ halfwidth-shift+_y2,i,
+ current_effect->spectral_color);
+ break;
+ case 3:
+ if (_y1<0)
+ _y1=0;
+ if (_y2<0)
+ _y2=0;
+ case 4:
+ line(halfwidth + cosw.f[i-step] * (shift+old_y1),
+ halfheight + sinw.f[i-step] * (shift+old_y1),
+ halfwidth + cosw.f[i] * (shift+_y1),
+ halfheight + sinw.f[i] * (shift+_y1),
+ current_effect->spectral_color);
+ line(halfwidth - cosw.f[i-step] * (shift+old_y2),
+ halfheight + sinw.f[i-step] * (shift+old_y2),
+ halfwidth - cosw.f[i] * (shift+_y2),
+ halfheight + sinw.f[i] * (shift+_y2),
+ current_effect->spectral_color);
+ break;
+ }
+ }
+
+ if (current_effect->mode_spectre==3 || current_effect->mode_spectre==4)
+ line(halfwidth + cosw.f[scr_par.width - step] * (shift+_y1),
+ halfheight + sinw.f[scr_par.width - step] * (shift+_y1),
+ halfwidth - cosw.f[scr_par.width - step] * (shift+_y2),
+ halfheight + sinw.f[scr_par.width - step] * (shift+_y2),
+ current_effect->spectral_color);
+}
+
+void curve(t_effect* current_effect)
+{
+ int i,j,k;
+ float v,vr;
+ float x,y;
+ float amplitude=(float)current_effect->curve_amplitude/256;
+
+ for (j=0;j<2;j++)
+ {
+ v=80;
+ vr=0.001;
+ k=current_effect->x_curve;
+ for (i=0;i<64;i++)
+ {
+ x=cos((float)(k)/(v+v*j*1.34))*scr_par.height*amplitude;
+ y=sin((float)(k)/(1.756*(v+v*j*0.93)))*scr_par.height*amplitude;
+ plot2(x*cos((float)k*vr)+y*sin((float)k*vr)+scr_par.width/2,
+ x*sin((float)k*vr)-y*cos((float)k*vr)+scr_par.height/2,
+ current_effect->curve_color);
+ k++;
+ }
+ }
+ current_effect->x_curve=k;
+}
+
+
+void init_sdl(void)
+{
+ surface1=(byte*)malloc(scr_par.width*scr_par.height);
+ surface2=(byte*)malloc(scr_par.width*scr_par.height);
+
+ if ( SDL_Init(SDL_INIT_VIDEO) < 0 )
+ {
+ fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
+ exit(1);
+ }
+
+ SDL_WM_SetCaption("Tyler", 0L);
+ screen = SDL_SetVideoMode(scr_par.width * scr_par.scale,
+ scr_par.height * scr_par.scale, 16, VIDEO_FLAGS);
+
+ if ( screen == NULL )
+ {
+ fprintf(stderr, "Couldn't init video mode: %s\n", SDL_GetError());
+ exit(1);
+ }
+ SDL_ShowCursor(0);
+ SDL_EnableKeyRepeat(0,0);
+}
+
+void toggle_fullscreen(void)
+{
+ SDL_WM_ToggleFullScreen(screen);
+}
+
+void close_sdl(void)
+{
+ SDL_Quit();
+}
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