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https://github.com/game-stop/veejay.git
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101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/*
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* Linux VeeJay
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*
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* Copyright(C)2002 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 "videomask.h"
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#include "../../config.h"
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#include <stdlib.h>
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#include "../subsample.h"
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#include "common.h"
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vj_effect *videomask_init(int w,int h)
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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 = 1;
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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;
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ve->limits[1][0] = 255;
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ve->defaults[0] = 150; /* threshold */
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ve->description = "Luminance Map";
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ve->sub_format = 0;
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ve->extra_frame = 1;
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ve->has_user = 0;
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ve->param_description = vje_build_param_list(ve->num_params, "Threshold");
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return ve;
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}
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void videomask_apply(VJFrame *frame, VJFrame *frame2, int width,
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int height, int videomask)
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{
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unsigned int i, op0, op1;
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const int len = frame->len;
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const int uv_len = frame->uv_len;
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const uint8_t pure_white_y = pixel_Y_hi_;
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const uint8_t pure_white_c = pixel_U_hi_;
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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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uint8_t *Y2 = frame2->data[0];
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uint8_t *Cb2= frame2->data[1];
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uint8_t *Cr2= frame2->data[2];
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for (i = 0; i < len; i++)
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{
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op1 = Y[i];
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op0 = 255 - op1;
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Y[i] = (op0 * Y[i] + op1 * pure_white_y)>>8;
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}
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for (i = 0; i < uv_len; i++)
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{
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op1 = Cb[i];
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op0 = 255 - op1;
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Cb[i] = (op0 * Cb[i] + op1 * pure_white_c)>>8;
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op1 = Cb[i];
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op0 = 255 - op1;
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Cr[i] = (op0 * Cr[i] + op1 * pure_white_c) >> 8;
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}
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}
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/*
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1. load 1st input reference to mm0
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2. load 2nd input reference to mm1
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3. Output reference to mm2
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4. load op0 to mm7
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5. load op1 to mm6
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4. unpack byte 1st input to word on mm3
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5. unpack byte 2nd input to word on mm4
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6. multiply mm7 with mm3
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7. multiply mm6 with mm4
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8. add mm3 + mm4
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9. shift rotate right with 8 ( / 256)
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*/
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void videomask_free(){}
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