mirror of
https://github.com/game-stop/veejay.git
synced 2025-12-18 22:00:00 +01:00
128 lines
3.8 KiB
C
128 lines
3.8 KiB
C
/*
|
|
* Linux VeeJay
|
|
*
|
|
* Copyright(C)2002-2016 Niels Elburg <nwelburg@gmail.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License , or (at your option) any later version.
|
|
*
|
|
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307 , USA.
|
|
*/
|
|
#include <config.h>
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <libvjmem/vjmem.h>
|
|
#include <libvje/vje.h>
|
|
#include <veejay/vj-viewport.h>
|
|
#include "common.h"
|
|
#include "perspective.h"
|
|
|
|
vj_effect *perspective_init(int width , int height)
|
|
{
|
|
vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
|
|
ve->num_params = 9;
|
|
ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params); /* default values */
|
|
ve->limits[0] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* min */
|
|
ve->limits[1] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* max */
|
|
ve->defaults[0] = 30; /* x1, y1 */
|
|
ve->defaults[1] = 30;
|
|
|
|
ve->defaults[2] = 70; /* x2, y2 */
|
|
ve->defaults[3] = 30;
|
|
|
|
ve->defaults[4] = 70; /* x3, y3 */
|
|
ve->defaults[5] = 70;
|
|
|
|
ve->defaults[6] = 30; /* x3, y4 */
|
|
ve->defaults[7] = 70;
|
|
|
|
ve->defaults[0] = 0; /* reverse */
|
|
|
|
int i;
|
|
for( i = 0; i < 8 ; i ++ ) {
|
|
ve->limits[0][i] = -100;
|
|
ve->limits[1][i] = 100;
|
|
}
|
|
|
|
ve->limits[0][8] = 0;
|
|
ve->limits[1][8] = 1;
|
|
|
|
ve->description = "Perspective Tool";
|
|
ve->sub_format = 1;
|
|
ve->extra_frame = 0;
|
|
ve->has_user = 0;
|
|
|
|
ve->param_description = vje_build_param_list( ve->num_params,
|
|
"Point 1 (X)", "Point 1 (Y)", "Point 2 (X)", "Point 2 (Y)",
|
|
"Point 3 (X)", "Point 3 (Y)", "Point 4 (X)", "Point 4 (Y)",
|
|
"Reverse" );
|
|
return ve;
|
|
}
|
|
static int perspective_[9] = { 0 };
|
|
static void *perspective_vp_ = NULL;
|
|
|
|
static uint8_t *perspective_private_[4] = { NULL, NULL, NULL, NULL };
|
|
|
|
int perspective_malloc(int width, int height)
|
|
{
|
|
int i;
|
|
for( i = 0; i < 3; i ++ ) {
|
|
perspective_private_[i] = (uint8_t*) vj_malloc( sizeof(uint8_t) * RUP8(width*height+width));
|
|
if(!perspective_private_[i])
|
|
return 0;
|
|
}
|
|
veejay_memset( perspective_, 0, sizeof(perspective_));
|
|
|
|
return 1;
|
|
}
|
|
|
|
void perspective_free() {
|
|
int i;
|
|
for( i = 0; i < 3; i ++ ) {
|
|
if( perspective_private_[i] )
|
|
free(perspective_private_[i] );
|
|
perspective_private_[i] = NULL;
|
|
}
|
|
if( perspective_vp_ )
|
|
viewport_destroy( perspective_vp_ );
|
|
perspective_vp_ = NULL;
|
|
}
|
|
|
|
void perspective_apply( VJFrame *frame, int width, int height, int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4, int reverse)
|
|
{
|
|
if( x1 != perspective_[0] || y1 != perspective_[1] || x2 != perspective_[2] || y2 != perspective_[3] ||
|
|
x3 != perspective_[4] || y3 != perspective_[5] || x4 != perspective_[6] || y4 != perspective_[7] || reverse != perspective_[8] )
|
|
{
|
|
if( perspective_vp_ )
|
|
viewport_destroy( perspective_vp_ );
|
|
perspective_vp_ = viewport_fx_init_map( width,height,x1,y1, x2,y2, x3,y3, x4,y4, reverse );
|
|
if(!perspective_vp_ )
|
|
return;
|
|
perspective_[0] = x1;
|
|
perspective_[1] = y1;
|
|
perspective_[2] = x2;
|
|
perspective_[3] = y2;
|
|
perspective_[4] = x3;
|
|
perspective_[5] = y3;
|
|
perspective_[6] = x4;
|
|
perspective_[7] = y4;
|
|
perspective_[8] = reverse;
|
|
}
|
|
|
|
int strides[4] = { (width*height),(width*height),(width*height), 0 };
|
|
vj_frame_copy( frame->data, perspective_private_, strides );
|
|
|
|
viewport_process_dynamic( perspective_vp_, perspective_private_, frame->data );
|
|
|
|
}
|
|
|