mirror of
https://github.com/game-stop/veejay.git
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138 lines
3.2 KiB
C
138 lines
3.2 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 <stdlib.h>
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#include <stdint.h>
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#include <libvjmem/vjmem.h>
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#include <stdio.h>
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#include "transform.h"
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#include "common.h"
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vj_effect *transform_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 = 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->defaults[0] = 5;
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//ve->defaults[1] = 1;
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ve->limits[0][0] = 1;
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ve->limits[1][0] = (height / 16);
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//ve->limits[0][1] = 1;
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//ve->limits[1][1] = 4096;
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ve->description = "Transform Cubics";
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ve->sub_format = 0;
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ve->extra_frame = 0;
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ve->has_user = 0;
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ve->param_description = vje_build_param_list(ve->num_params, "Cubics");
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return ve;
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}
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void transform_apply(VJFrame *frame, VJFrame *frame2, int width,
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int height, const int size)
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{
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unsigned int ty, tx, y, x;
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const unsigned int uv_height = frame->uv_height;
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const unsigned int uv_width = frame->uv_width;
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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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/* Luminance */
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for (y = 1; y < height; y++)
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{
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ty = y % size - (size >> 1);
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if ((y / size) % 2)
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{
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ty = y - ty;
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}
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else
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{
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ty = y + ty;
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}
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if (ty < 0)
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ty = 0;
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if (ty >= height)
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ty = height - 1;
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for (x = 1; x < width; x++)
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{
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tx = x % size - (size >> 1);
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if ((x / size) % 2)
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{
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tx = x - tx;
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}
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else
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{
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tx = x + tx;
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}
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if (tx < 0)
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tx = 0;
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if (tx >= width)
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tx = width - 1;
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Y[x + (y * width)] = Y2[(ty * width) + tx];
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}
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}
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/* Chroma */
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for (y = 1; y < uv_height; y++)
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{
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ty = y % size - (size >> 1);
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if ((y / size) % 2) {
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ty = y - ty;
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}
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else
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{
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ty = y + ty;
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}
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if (ty < 0)
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ty = 0;
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if (ty >= uv_height)
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ty = uv_height - 1;
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for (x = 1; x < uv_width; x++)
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{
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tx = x % size - (size >> 1);
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if ((x / size) % 2)
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{
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tx = x - tx;
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}
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else
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{
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tx = x + tx;
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}
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if (tx < 0)
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tx = 0;
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if (tx >= uv_width)
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tx = uv_width - 1;
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Cb[x + (y * uv_width)] = Cb2[(ty * uv_width) + tx];
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Cr[x + (y * uv_width)] = Cr2[(ty * uv_width) + tx];
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}
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}
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}
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void transform_free(){}
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