/* * Linux VeeJay * * Copyright(C)2002 Niels Elburg * * 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 #include #include #include "emboss.h" #include #include #include "common.h" vj_effect *emboss_init(int w, int h) { vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect)); ve->num_params = 1; 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] = 8; ve->limits[0][0] = 0; ve->limits[1][0] = 9; ve->description = "Various Weird Effects"; ve->sub_format = 0; ve->extra_frame = 0; ve->has_user = 0; ve->param_description = vje_build_param_list( ve->num_params,"Mode" ); return ve; } void simpleedge_framedata(VJFrame *frame, int width, int height) { unsigned int x, y; uint8_t a1, a2, a3, b1, b2, b3, c1, c2; uint8_t *Y = frame->data[0]; for (y = 1; y < (height-1); y++) { for (x = 1; x < (width-1); x++) { a1 = Y[(y - 1) * width + (x - 1)]; a2 = Y[(y - 1) * width + x]; a3 = Y[(y - 1) * width + (x + 1)]; b1 = Y[y * width + (x - 1)]; b2 = Y[y * width + x]; /* center */ b3 = Y[y * width + (x + 1)]; c1 = Y[(y + 1) * width + (x - 1)]; c2 = Y[(y + 1) * width + x]; if (b2 > a1 && b2 > a2 && b2 > a3 && b2 > b1 && b2 > b3 && b3 > c1 && b2 > c2 && b2 > c2) Y[y * width + x] = pixel_Y_hi_; else Y[y * width + x] = pixel_Y_lo_; } } } /********************************************************************************************** * * xtreme_emboss: looks a bit like emboss, but with dark colours and distorted edges * **********************************************************************************************/ void xtreme_emboss_framedata(VJFrame *frame, int width, int height) { unsigned int r, c; uint8_t *Y = frame->data[0]; int len = ( width * height ) - width; for (r = width; r < len; r += width) { for (c = 1; c < (width-1); c++) { Y[c + r] = (Y[r - 1 + c - 1] - Y[r - 1 + c] - Y[r - 1 + c + 1] + Y[r + c - 1] - Y[r + c] + Y[r + c + 1] + Y[r + 1 + c - 1] + Y[r + 1 + c] - Y[r + 1 + c + 1] ) / 9; } } } void another_try_edge(VJFrame *frame, int w, int h) { uint8_t p; const unsigned int len=(w*h)-w; unsigned int r,c; uint8_t *Y = frame->data[0]; for(r=w; r < len; r+= w) { for(c=1; c < w-1; c++) { p = ((Y[r+c-w] * -1) + (Y[r+c-w-1] * -1) + (Y[r+c-w+1] * -1) + (Y[r+c-1] * -1) + (Y[r+c] * -8) + (Y[r+c+1] * -1) + (Y[r+c+w] * -1) + (Y[r+c+w-1] * -1) + (Y[r+c+w+1] * -1))/9; Y[r+c] = CLAMP_Y(p); } } } /********************************************************************************************** * * lines_white_balanced_framedata: it looks cool, just try it. * **********************************************************************************************/ void lines_white_balance_framedata(VJFrame *frame, int width, int height) { unsigned int r, c; const unsigned int len = (width * height) - width; uint8_t val; uint8_t *Y = frame->data[0]; for (r = width; r < len; r += width) { for (c = 1; c < (width-1); c++) { val = (Y[r - 1 + c - 1] - Y[r - 1 + c] - Y[r - 1 + c + 1] + Y[r + c - 1] - Y[r + c] + Y[r + c + 1] + Y[r + 1 + c - 1] - Y[r + 1 + c] - Y[r + 1 + c + 1] ) / 9; Y[c + r] = CLAMP_Y(val); } } } void emboss_test_framedata(VJFrame *frame, int width, int height) { int a, b, c; int i; const int len = width * height; uint8_t *Y = frame->data[0]; for (i = 0; i < len; i++) { a = Y[i]; b = (a + 235) >> 1; c = (b + 235) >> 1; Y[i] = c; } } /********************************************************************************************** * * gray_emboss_framedata: similar as white_emboss_framedata, but image is more grayish * **********************************************************************************************/ void gray_emboss_framedata(VJFrame *frame, int width, int height) { int r, c; uint8_t val; uint8_t *Y = frame->data[0]; for (r = 0; r < (width * height); r += width) { for (c = 0; c < width; c++) { val = (Y[r - 1 + c - 1] - Y[r - 1 + c] - Y[r - 1 + c + 1] + Y[r + c - 1] - Y[r + c] - Y[r + c + 1] - Y[r + 1 + c - 1] - Y[r + 1 + c] - Y[r + 1 + c + 1] ) / 9; Y[r + c] = CLAMP_Y(val); } } } /********************************************************************************************** * * aggressive_emboss_framedata: much like the above two, but more aggressive. * **********************************************************************************************/ void aggressive_emboss_framedata(VJFrame *frame, int width, int height) { int r, c; uint8_t val; uint8_t *Y = frame->data[0]; const int len = width * height; for (r = 0; r < len; r += width) { for (c = 0; c < width; c++) { val = (Y[r - 1 + c - 1] - Y[r - 1 + c] - Y[r - 1 + c + 1] + Y[r + c - 1] - Y[r + c] - Y[r + c + 1] - Y[r + 1 + c - 1] + Y[r + 1 + c] + Y[r + 1 + c + 1] ) / 9; Y[c + r] = CLAMP_Y(val); } } } /********************************************************************************************** * * dark_emboss_framedata: like the above, but much less light. * **********************************************************************************************/ void dark_emboss_framedata(VJFrame *frame, int width, int height) { int r, c; uint8_t *Y = frame->data[0]; for (r = 0; r < (width * height); r += width) { for (c = 0; c < width; c++) { Y[c + r] = (Y[r - 1 + c - 1] - Y[r - 1 + c] - Y[r - 1 + c + 1] + Y[r + c - 1] + Y[r + c] - Y[r + c + 1] - Y[r + 1 + c - 1] + Y[r + 1 + c] + Y[r + 1 + c + 1] ) / 9; } } } /********************************************************************************************** * * grayish_mood_framedata: less light, more gray, only overal colour changes. * Name probably does not reflect resulting effects. **********************************************************************************************/ void grayish_mood_framedata(VJFrame *frame, int width, int height) { int r, c; uint8_t *Y = frame->data[0]; for (r = 0; r < (width * height); r += width) { for (c = 0; c < width; c++) { Y[c + r] = (Y[r - 1 + c - 1] - Y[r - 1 + c] - Y[r - 1 + c + 1] - Y[r + c - 1] - Y[r + c] - Y[r + c + 1] - Y[r + 1 + c - 1] - Y[r + 1 + c] - Y[r + 1 + c + 1] ) / 9; } } } /********************************************************************************************** * * blur_dark_framedata: blurs the image a little and decreases luminance * **********************************************************************************************/ void blur_dark_framedata(VJFrame *frame, int width, int height) { int r, c; int len = (width*height) - width; /* incomplete */ uint8_t *Y = frame->data[0]; for (r = width; r < len; r += width) { for (c = 1; c < width-1; c++) { Y[c + r] = (Y[r - 1 + c - 1] - Y[r - 1 + c] - Y[r - 1 + c + 1] + Y[r + c - 1] + Y[r + c] + Y[r + c + 1] + Y[r + 1 + c - 1] - Y[r + 1 + c] + Y[r + 1 + c + 1] ) / 9; } } } void emboss_apply(VJFrame *frame, int width, int height, int n) { switch (n) { case 1: xtreme_emboss_framedata(frame, width, height); break; case 2: lines_white_balance_framedata(frame, width, height); break; case 3: gray_emboss_framedata(frame, width, height); break; case 4: aggressive_emboss_framedata(frame, width, height); break; case 5: dark_emboss_framedata(frame, width, height); break; case 6: grayish_mood_framedata(frame, width, height); break; case 7: simpleedge_framedata(frame, width, height); break; case 8: emboss_test_framedata(frame, width, height); break; case 9: another_try_edge(frame,width,height); break; default: blur_dark_framedata(frame, width, height); break; } } void emboss_free(){}