diff options
Diffstat (limited to 'src/libnr/nr-pixblock-pattern.cpp')
| -rw-r--r-- | src/libnr/nr-pixblock-pattern.cpp | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/src/libnr/nr-pixblock-pattern.cpp b/src/libnr/nr-pixblock-pattern.cpp deleted file mode 100644 index aa3246297..000000000 --- a/src/libnr/nr-pixblock-pattern.cpp +++ /dev/null @@ -1,127 +0,0 @@ -#define __NR_PIXBLOCK_PATTERN_C__ - -/* - * Pixel buffer rendering library - * - * Authors: - * Lauris Kaplinski <lauris@kaplinski.com> - * - * This code is in public domain - */ - - -#include <glib/gmem.h> -#include "nr-pixops.h" -#include "nr-pixblock-pattern.h" - -#define NR_NOISE_SIZE 1024 - -void -nr_pixblock_render_gray_noise (NRPixBlock *pb, NRPixBlock *mask) -{ - static unsigned char *noise = NULL; - static unsigned int seed = 0; - unsigned int v; - NRRectL clip; - int x, y, bpp; - - if (mask) { - if (mask->empty) return; - nr_rect_l_intersect (&clip, &pb->area, &mask->area); - if (nr_rect_l_test_empty(clip)) return; - } else { - clip = pb->area; - } - - if (!noise) { - int i; - noise = g_new (unsigned char, NR_NOISE_SIZE); - for (i = 0; i < NR_NOISE_SIZE; i++) noise[i] = (rand () / (RAND_MAX >> 8)) & 0xff; - } - - bpp = NR_PIXBLOCK_BPP (pb); - - v = (rand () / (RAND_MAX >> 8)) & 0xff; - - if (mask) { - for (y = clip.y0; y < clip.y1; y++) { - unsigned char *d, *m; - d = NR_PIXBLOCK_PX (pb) + (y - pb->area.y0) * pb->rs + (clip.x0 - pb->area.x0) * bpp; - m = NR_PIXBLOCK_PX (mask) + (y - mask->area.y0) * pb->rs + (clip.x0 - mask->area.x0); - for (x = clip.x0; x < clip.x1; x++) { - v = v ^ noise[seed]; - switch (pb->mode) { - case NR_PIXBLOCK_MODE_A8: - d[0] = NR_COMPOSEA_111(m[0], d[0]); - break; - case NR_PIXBLOCK_MODE_R8G8B8: - d[0] = NR_COMPOSEN11_1111 (v, m[0], d[0]); - d[1] = NR_COMPOSEN11_1111 (v, m[0], d[1]); - d[2] = NR_COMPOSEN11_1111 (v, m[0], d[2]); - break; - case NR_PIXBLOCK_MODE_R8G8B8A8N: - if (m[0] != 0) { - unsigned int ca; - ca = NR_COMPOSEA_112(m[0], d[3]); - d[0] = NR_COMPOSENNN_111121 (v, m[0], d[0], d[3], ca); - d[1] = NR_COMPOSENNN_111121 (v, m[0], d[1], d[3], ca); - d[2] = NR_COMPOSENNN_111121 (v, m[0], d[2], d[3], ca); - d[3] = NR_NORMALIZE_21(ca); - } - break; - case NR_PIXBLOCK_MODE_R8G8B8A8P: - d[0] = NR_COMPOSENPP_1111 (v, m[0], d[0]); - d[1] = NR_COMPOSENPP_1111 (v, m[0], d[1]); - d[2] = NR_COMPOSENPP_1111 (v, m[0], d[2]); - d[3] = NR_COMPOSEA_111(d[3], m[0]); - break; - default: - break; - } - d += bpp; - m += 1; - if (++seed >= NR_NOISE_SIZE) { - int i; - i = (rand () / (RAND_MAX / NR_NOISE_SIZE)) % NR_NOISE_SIZE; - noise[i] ^= v; - seed = i % (NR_NOISE_SIZE >> 2); - } - } - } - } else { - for (y = clip.y0; y < clip.y1; y++) { - unsigned char *d; - d = NR_PIXBLOCK_PX (pb) + (y - pb->area.y0) * pb->rs + (clip.x0 - pb->area.x0) * bpp; - for (x = clip.x0; x < clip.x1; x++) { - v = v ^ noise[seed]; - switch (pb->mode) { - case NR_PIXBLOCK_MODE_A8: - d[0] = 255; - break; - case NR_PIXBLOCK_MODE_R8G8B8: - d[0] = v; - d[1] = v; - d[2] = v; - break; - case NR_PIXBLOCK_MODE_R8G8B8A8N: - case NR_PIXBLOCK_MODE_R8G8B8A8P: - d[0] = v; - d[1] = v; - d[2] = v; - d[3] = 255; - default: - break; - } - d += bpp; - if (++seed >= NR_NOISE_SIZE) { - int i; - i = (rand () / (RAND_MAX / NR_NOISE_SIZE)) % NR_NOISE_SIZE; - noise[i] ^= v; - seed = i % (NR_NOISE_SIZE >> 2); - } - } - } - } - - pb->empty = 0; -} |