mirror of
https://github.com/game-stop/veejay.git
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245 lines
6.6 KiB
C
245 lines
6.6 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 "common.h"
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#include <veejaycore/vjmem.h>
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#include "chromascratcher.h"
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#include "chromamagick.h"
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typedef struct {
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uint8_t *cframe[4];
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int cnframe;
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int cnreverse;
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int chroma_restart;
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VJFrame _tmp;
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} chromascratcher_t;
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vj_effect *chromascratcher_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 = 4;
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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] = (MAX_SCRATCH_FRAMES-1); /* uses the chromamagick effect for scratchign */
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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] = 29;
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ve->limits[0][3] = 0;
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ve->limits[1][3] = 1;
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ve->defaults[0] = 1;
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ve->defaults[1] = 150;
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ve->defaults[2] = 8;
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ve->defaults[3] = 1;
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ve->description = "Matte Scratcher";
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ve->sub_format = 1;
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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, "Length", "Value", "Mode", "Pingpong" );
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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][2],2,
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"Appearing", "Dissapearing","Appearing suppressed", "Dissappearing suppressed",
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"Add Subselect Luma", "Select Min", "Select Max", "Select Difference",
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"Select Difference Negate", "Add Luma", "Select Unfreeze", "Exclusive",
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"Difference Negate", "Additive", "Basecolor", "Freeze", "Unfreeze",
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"Hardlight", "Multiply", "Divide", "Subtract", "Add", "Screen",
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"Difference", "Softlight", "Dodge", "Reflect", "Difference Replace",
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"Darken", "Lighten", "Modulo Add"
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);
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return ve;
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}
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void *chromascratcher_malloc(int w, int h)
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{
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chromascratcher_t *c = (chromascratcher_t*) vj_calloc(sizeof(chromascratcher_t));
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if(!c) {
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return NULL;
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}
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c->cframe[0] = (uint8_t *) vj_malloc( RUP8(w * h * 3) * MAX_SCRATCH_FRAMES * sizeof(uint8_t) );
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if(!c->cframe[0]) {
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free(c);
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return NULL;
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}
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c->cframe[1] = c->cframe[0] + ( w * h * MAX_SCRATCH_FRAMES );
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c->cframe[2] = c->cframe[1] + ( w * h * MAX_SCRATCH_FRAMES );
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int strides[4] = { w * h * MAX_SCRATCH_FRAMES, w * h * MAX_SCRATCH_FRAMES, w * h * MAX_SCRATCH_FRAMES, 0 };
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vj_frame_clear( c->cframe, strides, 128 );
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return (void*) c;
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}
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void chromascratcher_free(void *ptr) {
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chromascratcher_t *c = (chromascratcher_t*) ptr;
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free(c->cframe[0]);
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free(c);
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}
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static void chromastore_frame(chromascratcher_t *c, VJFrame *src, int w, int h, int n, int no_reverse)
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{
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int strides[4] = { (w * h), (w*h), (w*h) , 0 };
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int cnframe = c->cnframe;
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uint8_t **cframe = c->cframe;
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int cnreverse = c->cnreverse;
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uint8_t *dest[4] = {
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cframe[0] + (w*h*cnframe),
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cframe[1] + (w*h*cnframe),
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cframe[2] + (w*h*cnframe),
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NULL };
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if (!cnreverse) {
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vj_frame_copy( src->data, dest, strides );
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} else {
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vj_frame_copy( dest, src->data, strides );
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}
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if (cnreverse)
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cnframe--;
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else
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cnframe++;
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if (cnframe >= n) {
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if (no_reverse == 0) {
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cnreverse = 1;
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cnframe = n - 1;
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if(cnframe < 0 )
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cnframe = 0;
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} else {
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cnframe = 0;
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}
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}
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if (cnframe == 0)
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cnreverse = 0;
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c->cnreverse = cnreverse;
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c->cnframe = cnframe;
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}
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void chromascratcher_apply(void *ptr, VJFrame *frame, int *args) {
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int mode = args[0];
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int opacity = args[1];
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int n = args[2];
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int no_reverse = args[3];
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chromascratcher_t *c = (chromascratcher_t*) ptr;
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int cnframe = c->cnframe;
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uint8_t **cframe = c->cframe;
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int chroma_restart = c->chroma_restart;
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unsigned int i;
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const unsigned int width = frame->width;
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const unsigned int height = frame->height;
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const int len = frame->len;
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const unsigned int op_a = (opacity > 255) ? 255 : opacity;
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const unsigned int op_b = 255 - op_a;
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const int offset = len * cnframe;
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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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VJFrame _tmp;
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veejay_memcpy( &_tmp, frame, (sizeof(VJFrame)));
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_tmp.data[0] = cframe[0];
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_tmp.data[1] = cframe[1];
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_tmp.data[2] = cframe[2];
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if(no_reverse != chroma_restart)
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{
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chroma_restart = no_reverse;
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cnframe = n;
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}
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if( cnframe == 0 ) {
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_tmp.data[0] = frame->data[0];
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_tmp.data[1] = frame->data[1];
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_tmp.data[2] = frame->data[2];
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}
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if(mode>3) {
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int matte_mode = mode - 3;
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int ch_args[2] = { matte_mode, opacity };
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chromamagick_apply( NULL,frame,&_tmp,ch_args);
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}
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else {
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switch (mode) { /* scratching with a sequence of frames (no scene changes) */
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case 0:
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/* moving parts will dissapear over time */
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for (i = 0; i < len; i++) {
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if (cframe[0][offset + i] < Y[i]) {
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Y[i] = cframe[0][offset + i];
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Cb[i] = cframe[1][offset + i];
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Cr[i] = cframe[2][offset + i];
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}
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}
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break;
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case 1:
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for (i = 0; i < len; i++) {
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/* moving parts will remain visible */
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if (cframe[0][offset + i] > Y[i]) {
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Y[i] = cframe[0][offset + i];
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Cb[i] = cframe[1][offset + i];
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Cr[i] = cframe[2][offset + i];
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}
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}
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break;
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case 2:
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for (i = 0; i < len; i++) {
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if ((cframe[0][offset + i] * op_a) < (Y[i] * op_b)) {
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Y[i] = cframe[0][offset + i];
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Cb[i] = cframe[1][offset + i];
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Cr[i] = cframe[2][offset + i];
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}
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}
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break;
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case 3:
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for (i = 0; i < len; i++) {
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/* moving parts will remain visible */
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if ((cframe[0][offset + i] * op_a) > (Y[i] * op_b)) {
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Y[i] = cframe[0][offset + i];
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Cb[i] = cframe[1][offset + i];
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Cr[i] = cframe[2][offset + i];
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}
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}
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break;
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}
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}
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chromastore_frame(c, frame, width, height, n, no_reverse);
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c->chroma_restart = chroma_restart;
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}
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