mirror of
https://github.com/game-stop/veejay.git
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228 lines
6.2 KiB
C
228 lines
6.2 KiB
C
/*
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* Linux VeeJay
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*
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* Copyright(C)2004 Niels Elburg <elburg@hio.hen.nl>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License , or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307 , USA.
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <libvjmem/vjmem.h>
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#include <math.h>
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#include "complexsaturate.h"
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#include "common.h"
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vj_effect *complexsaturation_init(int w, int h)
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{
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vj_effect *ve;
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ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
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ve->num_params = 7;
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ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params); /* default values */
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ve->limits[0] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* min */
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ve->limits[1] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* max */
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ve->defaults[0] = 300; /* angle */
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ve->defaults[1] = 255; /* r */
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ve->defaults[2] = 0; /* g */
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ve->defaults[3] = 0; /* b */
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ve->defaults[4] = 50; /* v_adjust */
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ve->defaults[5] = 50; /* degrees */
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ve->defaults[6] = 2400; /* noise suppression */
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ve->limits[0][0] = 5;
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ve->limits[1][0] = 900;
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ve->limits[0][1] = 0;
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ve->limits[1][1] = 255;
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ve->limits[0][2] = 0;
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ve->limits[1][2] = 255;
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ve->limits[0][3] = 0;
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ve->limits[1][3] = 255;
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ve->limits[0][4] = 0;
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ve->limits[1][4] = 360;
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ve->limits[0][5] = 0;
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ve->limits[1][5] = 256;
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ve->limits[0][6] = 0;
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ve->limits[1][6] = 3500;
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ve->has_user = 0;
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ve->description = "Complex Saturation";
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ve->extra_frame = 0;
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ve->sub_format = 1;
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ve->rgb_conv = 1;
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ve->param_description = vje_build_param_list( ve->num_params, "Angle", "Red", "Green", "Blue", "Intensity", "Degrees", "Noise suppression" );
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return ve;
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}
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void complexsaturation_apply(VJFrame *frame, int width,
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int height, int i_angle, int r, int g,
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int b, int adjust_v, int adjust_degrees, int i_noise)
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{
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// double degrees = adjust_degrees * 0.01;
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// double dsat = adjust_v * 0.01;
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float hue = (adjust_degrees/180.0)*M_PI;
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float sat = (adjust_v * 0.01);
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uint8_t *fg_y, *fg_cb, *fg_cr;
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uint8_t *bg_y, *bg_cb, *bg_cr;
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int accept_angle_tg, accept_angle_ctg, one_over_kc;
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int kfgy_scale, kg;
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int cb, cr;
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int kbg, x1, y1;
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float kg1, tmp, aa = 128, bb = 128, _y = 0;
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float angle = (float) i_angle * 0.1f;
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float noise_level = (i_noise * 0.01f);
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unsigned int pos;
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uint8_t val, tmp1;
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uint8_t *Y = frame->data[0];
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uint8_t *Cb= frame->data[1];
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uint8_t *Cr= frame->data[2];
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int iy=pixel_Y_lo_,iu=128,iv=128;
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_rgb2yuv( r,g,b, iy,iu,iv );
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_y = (float) iy;
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aa = (float) iu;
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bb = (float) iv;
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tmp = sqrt(((aa * aa) + (bb * bb)));
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cb = 127 * (aa / tmp);
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cr = 127 * (bb / tmp);
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kg1 = tmp;
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/* obtain coordinate system for cb / cr */
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accept_angle_tg = 0xf * tan(M_PI * angle / 180.0);
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accept_angle_ctg = 0xf / tan(M_PI * angle / 180.0);
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tmp = 1 / kg1;
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one_over_kc = 0xff * 2 * tmp - 0xff;
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kfgy_scale = 0xf * (float) (_y) / kg1;
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kg = kg1;
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/* intialize pointers */
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fg_y = frame->data[0];
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fg_cb = frame->data[1];
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fg_cr = frame->data[2];
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bg_y = frame->data[0];
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bg_cb = frame->data[1];
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bg_cr = frame->data[2];
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const int s = (int) rint( sin(hue) * (1<<16) * sat );
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const int c = (int) rint( cos(hue) * (1<<16) * sat );
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for (pos = 0; pos < frame->len; pos++)
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{
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short xx, yy;
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xx = (((fg_cb[pos]) * cb) + ((fg_cr[pos]) * cr)) >> 7;
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if (xx < -128)
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xx = -128;
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if (xx > 127)
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xx = 127;
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yy = (((fg_cr[pos]) * cb) - ((fg_cb[pos]) * cr)) >> 7;
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if (yy < -128)
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yy = -128;
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if (yy > 127)
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yy = 127;
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/* accept angle should not be > 90 degrees
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reasonable results between 10 and 80 degrees.
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*/
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val = (xx * accept_angle_tg) >> 4;
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if (val > 127)
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val = 127;
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if (abs(yy) > val) { /* pixel is within selected color range, saturate */
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val = (yy * accept_angle_ctg) >> 4;
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x1 = abs(val);
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y1 = yy;
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tmp1 = xx - x1;
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kbg = (tmp1 * one_over_kc) >> 1;
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if (kbg < 0)
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kbg = 0;
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if (kbg > 255)
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kbg = 255;
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val = (tmp1 * kfgy_scale) >> 4;
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val = fg_y[pos] - val;
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Y[pos] = val;
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val = ((x1 * (cb-128)) - (y1 * (cr-128))) >> 7;
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Cb[pos] = val;
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val = ((x1 * (cr-128)) - (y1 * (cb-128))) >> 7;
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Cr[pos] = val;
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val = (yy * yy) + (kg * kg);
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if (val < (noise_level * noise_level)) {
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kbg = 255;
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}
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val = (Y[pos] + (kbg * bg_y[pos])) >> 8;
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Y[pos] = CLAMP_Y(val);
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val = (Cb[pos] + (kbg * bg_cb[pos])) >> 8;
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Cb[pos] = CLAMP_UV(val);
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val = (Cr[pos] + (kbg * bg_cr[pos])) >> 8;
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Cr[pos] = CLAMP_UV(val);
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int _cb = Cb[pos] - 128;
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int _cr = Cr[pos] - 128;
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if( _cb != 0 && _cr != 0)
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{
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/* double co=0.0,si=0.0;
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//fast_sqrt( dsaturation, (double) (_cb * cr + _cr * _cr) );
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dsaturation = ccolor_sqrt( (double) _cb, (double) _cr);
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dcolor = ccolor_sine( _cb, dsaturation);
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if( _cr < 0) {
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dcolor = M_PI - dcolor;
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}
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dcolor += (degrees * M_PI) / 180.0;
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dsaturation *= dsat;
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sin_cos( co, si , dcolor );
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Cb[pos] = si * dsaturation + 128;
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const int u = Cb[i] - 128;
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const int v = Cr[i] - 128;
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int new_u = (c * u - s * v + (1<<15) + (128<<16)) >> 16;
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int new_v = (s * u + c * v + (1<<15) + (128<<16)) >> 16;
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if( new_u & 768 ) new_u = (-new_u) >> 31;
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if( new_v & 768 ) new_v = (-new_v) >> 31;
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Cr[pos] = co * dsaturation + 128;*/
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const int u = Cb[pos] - 128;
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const int v = Cr[pos] - 128;
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int new_u = (c * u - s * v + (1<<15) + (128<<16)) >> 16;
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int new_v = (s * u + c * v + (1<<15) + (128<<16)) >> 16;
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if( new_u & 768 ) new_u = (-new_u) >> 31;
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if( new_v & 768 ) new_v = (-new_v) >> 31;
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Cb[pos] = new_u;
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Cr[pos] = new_v;
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}
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}
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}
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}
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void complexsaturate_free(){}
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