mirror of
https://github.com/game-stop/veejay.git
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326 lines
9.5 KiB
C
326 lines
9.5 KiB
C
/*
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* Linux VeeJay
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*
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* Copyright(C)2002 Niels Elburg <nwelburg@gmail.com>
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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 "lumakey.h"
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#include "common.h"
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vj_effect *lumakey_init(int width, int height)
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{
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vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
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ve->num_params = 5;
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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->limits[0][0] = 0; /* feather */
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ve->limits[1][0] = 255;
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ve->limits[0][1] = 0; /* threshold min */
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ve->limits[1][1] = 255;
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ve->limits[0][2] = 0; /* threshold max */
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ve->limits[1][2] = 255;
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ve->limits[0][3] = 1; /* distance */
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ve->limits[1][3] = width;
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ve->limits[0][4] = 0; /* type */
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ve->limits[1][4] = 2;
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ve->defaults[0] = 255;
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ve->defaults[1] = 150;
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ve->defaults[2] = 200;
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ve->defaults[3] = 1;
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ve->defaults[4] = 1;
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ve->description = "Luma Key";
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ve->extra_frame = 1;
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ve->sub_format = 1;
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ve->has_user = 0;
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ve->param_description = vje_build_param_list(ve->num_params, "Feather", "Min Threshold","Max Threshold","Distance", "Mode" );
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ve->hints = vje_init_value_hint_list( ve->num_params );
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vje_build_value_hint_list( ve->hints, ve->limits[1][4], 4,"Simple", "White", "Smooth" );
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return ve;
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}
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static void lumakey_simple(uint8_t * yuv1[3], uint8_t * yuv2[3], int width,
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int height, int threshold, int threshold2, int opacity)
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{
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unsigned int x, y, len = width * height;
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uint8_t a1, a2;
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unsigned int op0, op1;
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uint8_t Y, Cb, Cr;
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op1 = (opacity > 255) ? 255 : opacity;
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op0 = 255 - op1;
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for (y = 0; y < len; y += width) {
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for (x = 0; x < width; x++) {
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a1 = yuv1[0][x + y];
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a2 = yuv2[0][x + y];
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/*
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if ( a1 >= threshold && a1 <= threshold2) {
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Y = (op0 * a1 + op1 * a2 )/255;
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Cb = (op0 * yuv1[1][x+y] + op1 * yuv2[1][x+y])/255;
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Cr =(op0 * yuv1[2][x+y] + op1 * yuv2[2][x+y])/255;
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}
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*/
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if (a1 >= threshold && a1 <= threshold2) {
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Y = (op0 * a1 + op1 * a2) >> 8;
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Cb = ((op0 * yuv1[1][x + y]) + (op1 * yuv2[1][x + y]) ) >> 8;
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Cr = ((op0 * yuv1[2][x + y]) + ( op1 * yuv2[2][x + y]) ) >> 8;
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yuv1[0][x + y] = Y; // < 16 ? 16 : Y > 235 ? 235 : Y;
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yuv1[1][x + y] = Cb; // < 16 ? 16 : Cb > 240 ? 240 : Cb;
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yuv1[2][x + y] = Cr; // < 16 ? 16 : Cr > 240 ? 240 : Cr;
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}
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}
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}
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}
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static void lumakey_smooth(uint8_t * yuv1[3], uint8_t * yuv2[3], int width,
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int height, int threshold, int threshold2, int opacity,
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int distance)
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{
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unsigned int x, y = 0, len = width * height;
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uint8_t a1, a2;
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unsigned int op0, op1;
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uint8_t Y, Cb, Cr;
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// unsigned int soft0, soft1;
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unsigned int t2, t3;
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uint8_t p1, p2;
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op1 = (opacity > 255) ? 255 : opacity;
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op0 = 255 - op1;
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// soft0 = 255 / distance;
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// soft1 = 255 - soft0;
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t2 = threshold - distance; // 0 - 4
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t3 = threshold2 + distance; // 3 + 4
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/* first row */
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if (t2 < 0)
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t2 = 0;
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if (t3 > 255)
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t3 = 255;
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for (x = 0; x < width; x++) {
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a1 = yuv1[0][x];
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a2 = yuv2[0][x];
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if (a1 >= threshold && a1 <= threshold2) {
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Y = (op0 * a1 + op1 * a2) >> 8;
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Cb = (op0 * yuv1[1][x] + op1 * yuv2[1][x]) >> 8;
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Cr = (op0 * yuv1[2][x] + op1 * yuv2[2][x]) >> 8;
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yuv1[0][x] = Y; //< 16 ? 16 : Y > 235 ? 235 : Y;
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yuv1[1][x] = Cb; // < 16 ? 16 : Cb > 240 ? 240 : Cb;
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yuv1[2][x] = Cr; // < 16 ? 16 : Cr > 240 ? 240 : Cr;
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}
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}
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for (y = width; y < len - width; y += width) {
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/* first pixel in column */
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a1 = yuv1[0][y];
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a2 = yuv2[0][y];
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if (a1 >= threshold && a1 <= threshold2) {
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Y = (op0 * a1 + op1 * a2) >> 8;
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Cb = (op0 * yuv1[1][y] + op1 * yuv2[1][y]) >> 8;
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Cr = (op0 * yuv1[2][y] + op1 * yuv2[2][y]) >> 8;
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}
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/* rest of pixels in column */
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for (x = 1; x < width - 1; x++) {
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a1 = yuv1[0][x + y];
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a2 = yuv2[0][x + y];
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if ((a1 >= t2 && a1 < threshold)
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|| (a1 > threshold2 && a1 <= t3)) {
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/* special case */
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p1 = ( /* calculate mean of a1 */
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yuv1[0][y - width + x - 1] +
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yuv1[0][y - width + x + 1] +
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yuv1[0][y - width + x] +
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yuv1[0][y + x] +
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yuv1[0][y + x - 1] +
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yuv1[0][y + x + 1] +
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yuv1[0][y + width + x] +
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yuv1[0][y + width + x + 1] +
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yuv1[0][y + width + x - 1]
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) / 9;
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p2 = ( /* calculate mean of a1 */
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yuv2[0][y - width + x - 1] +
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yuv2[0][y - width + x + 1] +
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yuv2[0][y - width + x] +
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yuv2[0][y + x] +
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yuv2[0][y + x - 1] +
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yuv2[0][y + x + 1] +
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yuv2[0][y + width + x] +
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yuv2[0][y + width + x + 1] +
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yuv2[0][y + width + x - 1]
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) / 9;
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yuv1[0][x + y] = (op0 * p1 + op1 * p2) >> 8;
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yuv1[1][x + y] =
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(op0 * yuv1[1][x + y] + op1 * yuv2[1][x + y]) >> 8;
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yuv1[2][x + y] =
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(op0 * yuv1[2][x + y] + op1 * yuv2[2][x + y]) >> 8;
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} else {
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if (a1 >= threshold && a1 <= threshold2) {
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Y = (op0 * a1 + op1 * a2) >> 8;
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Cb = (op0 * yuv1[1][x + y] +
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op1 * yuv2[1][x + y]) >> 8;
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Cr = (op0 * yuv1[2][x + y] +
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op1 * yuv2[2][x + y]) >> 8;
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yuv1[0][x + y] = Y; // < 16 ? 16 : Y > 235 ? 235 : Y;
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yuv1[1][x + y] = Cb; // < 16 ? 16 : Cb > 240 ? 240 : Cb;
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yuv1[2][x + y] = Cr; // < 16 ? 16 : Cr > 240 ? 240 : Cr;
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}
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}
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}
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}
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/* last row */
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for (x = len - width; x < len; x++) {
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a1 = yuv1[0][x];
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a2 = yuv2[0][x];
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if (a1 >= threshold && a1 <= threshold2) {
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Y = (op0 * a1 + op1 * a2) >> 8;
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Cb = (op0 * yuv1[1][x] + op1 * yuv2[1][x]) >> 8;
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Cr = (op0 * yuv1[2][x] + op1 * yuv2[2][x]) >> 8;
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yuv1[0][x] = Y; // < 16 ? 16 : Y > 235 ? 235 : Y;
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yuv1[1][x] = Cb; // < 16 ? 16 : Cb > 240 ? 240 : Cb;
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yuv1[2][x] = Cr; // < 16 ? 16 : Cr > 240 ? 240 : Cr;
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}
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}
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}
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static void lumakey_smooth_white(uint8_t * yuv1[3], uint8_t * yuv2[3], int width,
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int height, int threshold, int threshold2,
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int opacity, int distance)
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{
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unsigned int x, y = 0, len = width * height;
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uint8_t a1, a2;
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unsigned int op0, op1;
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uint8_t Y, Cb, Cr;
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// unsigned int soft0, soft1;
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unsigned int t2, t3;
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op1 = (opacity > 255) ? 255 : opacity;
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op0 = 255 - op1;
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// soft0 = 255 / distance;
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// soft1 = 255 - soft0;
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t2 = threshold - distance;
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t3 = threshold2 + distance;
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/* first row */
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for (x = 0; x < width; x++) {
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a1 = yuv1[0][x];
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a2 = yuv2[0][x];
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if (a1 >= threshold && a1 <= threshold2) {
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Y = (op0 * a1 + op1 * a2) >> 8;
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Cb = (op0 * yuv1[1][x] + op1 * yuv2[1][x]) >> 8;
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Cr = (op0 * yuv1[2][x] + op1 * yuv2[2][x]) >> 8;
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yuv1[0][x] = Y; // < 16 ? 16 : Y > 235 ? 235 : Y;
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yuv1[1][x] = Cb; // < 16 ? 16 : Cb > 240 ? 240 : Cb;
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yuv1[2][x] = Cr; // < 16 ? 16 : Cr > 240 ? 240 : Cr;
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}
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}
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for (y = width; y < len - width; y += width) {
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/* first pixel in column */
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a1 = yuv1[0][y];
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a2 = yuv2[0][y];
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if (a1 >= threshold && a1 <= threshold2) {
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Y = (op0 * a1 + op1 * a2) >> 8;
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Cb = (op0 * yuv1[1][y] + op1 * yuv2[1][y]) >> 8;
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Cr = (op0 * yuv1[2][y] + op1 * yuv2[2][y]) >> 8;
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}
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/* rest of pixels in column */
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/* rest of pixels in column */
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for (x = 1; x < width - 1; x++) {
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a1 = yuv1[0][x + y];
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a2 = yuv2[0][x + y];
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if ((a1 >= t2 && a1 < threshold)
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|| (a1 > threshold2 && a1 <= t3)) {
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/* special case */
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yuv1[0][x + y] = pixel_Y_hi_;
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yuv1[1][x + y] = 128;
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yuv1[2][x + y] = 128;
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} else {
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if (a1 >= threshold && a1 <= threshold2) {
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Y = (op0 * a1 + op1 * a2) >> 8;
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Cb = (op0 * yuv1[1][x + y] +
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op1 * yuv2[1][x + y]) >> 8;
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Cr = (op0 * yuv1[2][x + y] +
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op1 * yuv2[2][x + y]) >> 8;
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yuv1[0][x + y] = Y; // < 16 ? 16 : Y > 235 ? 235 : Y;
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yuv1[1][x + y] = Cb; // < 16 ? 16 : Cb > 240 ? 240 : Cb;
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yuv1[2][x + y] = Cr; // < 16 ? 16 : Cr > 240 ? 240 : Cr;
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}
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}
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}
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}
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/* last row */
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for (x = len - width; x < len; x++) {
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a1 = yuv1[0][x];
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a2 = yuv2[0][x];
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if (a1 >= threshold && a1 <= threshold2) {
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Y = (op0 * a1 + op1 * a2) >> 8;
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Cb = (op0 * yuv1[1][x] + op1 * yuv2[1][x]) >> 8;
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Cr = (op0 * yuv1[2][x] + op1 * yuv2[2][x]) >> 8;
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yuv1[0][x] = Y; // < 16 ? 16 : Y > 235 ? 235 : Y;
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yuv1[1][x] = Cb; // < 16 ? 16 : Cb > 240 ? 240 : Cb;
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yuv1[2][x] = Cr; // < 16 ? 16 : Cr > 240 ? 240 : Cr;
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}
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}
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}
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void lumakey_apply( VJFrame *frame, VJFrame *frame2, int width,
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int height, int type, int threshold, int threshold2,
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int feather, int d)
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{
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switch(type)
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{
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case 0:
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/* normal overlay */
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lumakey_simple(frame->data, frame2->data, width, height, threshold, threshold2,feather);
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break;
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case 1:
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/* threshold */
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lumakey_smooth_white(frame->data, frame2->data, width, height, threshold,threshold2, feather,d);
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break;
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case 2:
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lumakey_smooth(frame->data, frame2->data, width, height, threshold, threshold2,feather, d);
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break;
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}
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}
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