moving trunk for module inkscape

(bzr r1)

1 files changed, 300 insertions, 0 deletions

diff --git a/src/libnr/nr-blit.cpp b/src/libnr/nr-blit.cpp
new file mode 100644
index 000000000..2a93bc9bd
--- /dev/null
+++ b/src/libnr/nr-blit.cpp
@@ -0,0 +1,300 @@
+#define __NR_BLIT_C__
+
+/*
+ * Pixel buffer rendering library
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * This code is in public domain
+ */
+
+#include "nr-pixops.h"
+#include "nr-compose.h"
+#include "nr-blit.h"
+
+void
+nr_blit_pixblock_pixblock_alpha (NRPixBlock *d, NRPixBlock *s, unsigned int alpha)
+{
+	NRRectL clip;
+	unsigned char *dpx, *spx;
+	int dbpp, sbpp;
+	int w, h;
+
+	if (alpha == 0) return;
+	if (s->empty) return;
+	/* fixme: */
+	if (s->mode == NR_PIXBLOCK_MODE_A8) return;
+	/* fixme: */
+	if (s->mode == NR_PIXBLOCK_MODE_R8G8B8) return;
+
+	/*
+	 * Possible variants as of now:
+	 *
+	 * 0. SRC EP - DST EP *
+	 * 1. SRC EP - DST EN *
+	 * 2. SRC EP - DST  P *
+	 * 3. SRC EP - DST  N *
+	 * 4. SRC EN - DST EP *
+	 * 5. SRC EN - DST EN *
+	 * 6. SRC EN - DST  P *
+	 * 7. SRC EN - DST  N *
+	 * 8. SRC  P - DST EP *
+	 * 9. SRC  P - DST EN *
+	 * A. SRC  P - DST  P *
+	 * B. SRC  P - DST  N *
+	 * C. SRC  N - DST EP *
+	 * D. SRC  N - DST EN *
+	 * E. SRC  N - DST  P *
+	 * F. SRC  N - DST  N *
+	 *
+	 */
+
+	nr_rect_l_intersect (&clip, &d->area, &s->area);
+
+	if (nr_rect_l_test_empty (&clip)) return;
+
+	/* Pointers */
+	dbpp = NR_PIXBLOCK_BPP (d);
+	dpx = NR_PIXBLOCK_PX (d) + (clip.y0 - d->area.y0) * d->rs + dbpp * (clip.x0 - d->area.x0);
+	sbpp = NR_PIXBLOCK_BPP (s);
+	spx = NR_PIXBLOCK_PX (s) + (clip.y0 - s->area.y0) * s->rs + sbpp * (clip.x0 - s->area.x0);
+	w = clip.x1 - clip.x0;
+	h = clip.y1 - clip.y0;
+
+	switch (d->mode) {
+	case NR_PIXBLOCK_MODE_A8:
+		/* No rendering into alpha at moment */
+		break;
+	case NR_PIXBLOCK_MODE_R8G8B8:
+		if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
+			nr_R8G8B8_R8G8B8_R8G8B8A8_P (dpx, w, h, d->rs, spx, s->rs, alpha);
+		} else {
+			nr_R8G8B8_R8G8B8_R8G8B8A8_N (dpx, w, h, d->rs, spx, s->rs, alpha);
+		}
+		break;
+	case NR_PIXBLOCK_MODE_R8G8B8A8P:
+		if (d->empty) {
+			if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
+				/* Case 8 */
+				nr_R8G8B8A8_P_EMPTY_R8G8B8A8_P (dpx, w, h, d->rs, spx, s->rs, alpha);
+			} else {
+				/* Case C */
+				nr_R8G8B8A8_P_EMPTY_R8G8B8A8_N (dpx, w, h, d->rs, spx, s->rs, alpha);
+			}
+		} else {
+			if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
+				/* case A */
+				nr_R8G8B8A8_P_R8G8B8A8_P_R8G8B8A8_P (dpx, w, h, d->rs, spx, s->rs, alpha);
+			} else {
+				/* case E */
+				nr_R8G8B8A8_P_R8G8B8A8_P_R8G8B8A8_N (dpx, w, h, d->rs, spx, s->rs, alpha);
+			}
+		}
+		break;
+	case NR_PIXBLOCK_MODE_R8G8B8A8N:
+		if (d->empty) {
+			if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
+				/* Case 9 */
+				nr_R8G8B8A8_N_EMPTY_R8G8B8A8_P (dpx, w, h, d->rs, spx, s->rs, alpha);
+			} else {
+				/* Case D */
+				nr_R8G8B8A8_N_EMPTY_R8G8B8A8_N (dpx, w, h, d->rs, spx, s->rs, alpha);
+			}
+		} else {
+			if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
+				/* case B */
+				nr_R8G8B8A8_N_R8G8B8A8_N_R8G8B8A8_P (dpx, w, h, d->rs, spx, s->rs, alpha);
+			} else {
+				/* case F */
+				nr_R8G8B8A8_N_R8G8B8A8_N_R8G8B8A8_N (dpx, w, h, d->rs, spx, s->rs, alpha);
+			}
+		}
+		break;
+	}
+}
+
+void
+nr_blit_pixblock_pixblock_mask (NRPixBlock *d, NRPixBlock *s, NRPixBlock *m)
+{
+	NRRectL clip;
+	unsigned char *dpx, *spx, *mpx;
+	int dbpp, sbpp;
+	int w, h;
+
+	if (s->empty) return;
+	/* fixme: */
+	if (s->mode == NR_PIXBLOCK_MODE_A8) return;
+	/* fixme: */
+	if (s->mode == NR_PIXBLOCK_MODE_R8G8B8) return;
+
+	/*
+	 * Possible variants as of now:
+	 *
+	 * 0. SRC EP - DST EP *
+	 * 1. SRC EP - DST EN *
+	 * 2. SRC EP - DST  P *
+	 * 3. SRC EP - DST  N *
+	 * 4. SRC EN - DST EP *
+	 * 5. SRC EN - DST EN *
+	 * 6. SRC EN - DST  P *
+	 * 7. SRC EN - DST  N *
+	 * 8. SRC  P - DST EP *
+	 * 9. SRC  P - DST EN *
+	 * A. SRC  P - DST  P *
+	 * B. SRC  P - DST  N *
+	 * C. SRC  N - DST EP *
+	 * D. SRC  N - DST EN *
+	 * E. SRC  N - DST  P *
+	 * F. SRC  N - DST  N *
+	 *
+	 */
+
+	nr_rect_l_intersect (&clip, &d->area, &s->area);
+	nr_rect_l_intersect (&clip, &clip, &m->area);
+
+	if (nr_rect_l_test_empty (&clip)) return;
+
+	/* Pointers */
+	dbpp = NR_PIXBLOCK_BPP (d);
+	dpx = NR_PIXBLOCK_PX (d) + (clip.y0 - d->area.y0) * d->rs + dbpp * (clip.x0 - d->area.x0);
+	sbpp = NR_PIXBLOCK_BPP (s);
+	spx = NR_PIXBLOCK_PX (s) + (clip.y0 - s->area.y0) * s->rs + sbpp * (clip.x0 - s->area.x0);
+	mpx = NR_PIXBLOCK_PX (m) + (clip.y0 - m->area.y0) * m->rs + 1 * (clip.x0 - m->area.x0);
+	w = clip.x1 - clip.x0;
+	h = clip.y1 - clip.y0;
+
+	switch (d->mode) {
+	case NR_PIXBLOCK_MODE_A8:
+		/* No rendering into alpha at moment */
+		break;
+	case NR_PIXBLOCK_MODE_R8G8B8:
+		if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
+			nr_R8G8B8_R8G8B8_R8G8B8A8_P_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
+		} else {
+			nr_R8G8B8_R8G8B8_R8G8B8A8_N_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
+		}
+		break;
+	case NR_PIXBLOCK_MODE_R8G8B8A8P:
+		if (d->empty) {
+			if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
+				/* Case 8 */
+				nr_R8G8B8A8_P_EMPTY_R8G8B8A8_P_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
+			} else {
+				/* Case C */
+				nr_R8G8B8A8_P_EMPTY_R8G8B8A8_N_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
+			}
+		} else {
+			if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
+				/* case A */
+				nr_R8G8B8A8_P_R8G8B8A8_P_R8G8B8A8_P_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
+			} else {
+				/* case E */
+				nr_R8G8B8A8_P_R8G8B8A8_P_R8G8B8A8_N_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
+			}
+		}
+		break;
+	case NR_PIXBLOCK_MODE_R8G8B8A8N:
+		if (d->empty) {
+			if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
+				/* Case 9 */
+				nr_R8G8B8A8_N_EMPTY_R8G8B8A8_P_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
+			} else {
+				/* Case D */
+				nr_R8G8B8A8_N_EMPTY_R8G8B8A8_N_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
+			}
+		} else {
+			if (s->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
+				/* case B */
+				nr_R8G8B8A8_N_R8G8B8A8_N_R8G8B8A8_P_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
+			} else {
+				/* case F */
+				nr_R8G8B8A8_N_R8G8B8A8_N_R8G8B8A8_N_A8 (dpx, w, h, d->rs, spx, s->rs, mpx, m->rs);
+			}
+		}
+		break;
+	}
+}
+
+void
+nr_blit_pixblock_mask_rgba32 (NRPixBlock *d, NRPixBlock *m, unsigned long rgba)
+{
+	if (!(rgba & 0xff)) return;
+
+	if (m) {
+		NRRectL clip;
+		unsigned char *dpx, *mpx;
+		int w, h;
+
+		if (m->mode != NR_PIXBLOCK_MODE_A8) return;
+
+		if (!nr_rect_l_test_intersect (&d->area, &m->area)) return;
+
+		nr_rect_l_intersect (&clip, &d->area, &m->area);
+
+		/* Pointers */
+		dpx = NR_PIXBLOCK_PX (d) + (clip.y0 - d->area.y0) * d->rs + NR_PIXBLOCK_BPP (d) * (clip.x0 - d->area.x0);
+		mpx = NR_PIXBLOCK_PX (m) + (clip.y0 - m->area.y0) * m->rs + (clip.x0 - m->area.x0);
+		w = clip.x1 - clip.x0;
+		h = clip.y1 - clip.y0;
+
+		if (d->empty) {
+			if (d->mode == NR_PIXBLOCK_MODE_R8G8B8) {
+				nr_R8G8B8_R8G8B8_A8_RGBA32 (dpx, w, h, d->rs, mpx, m->rs, rgba);
+			} else if (d->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
+				nr_R8G8B8A8_P_EMPTY_A8_RGBA32 (dpx, w, h, d->rs, mpx, m->rs, rgba);
+			} else {
+				nr_R8G8B8A8_N_EMPTY_A8_RGBA32 (dpx, w, h, d->rs, mpx, m->rs, rgba);
+			}
+			d->empty = 0;
+		} else {
+			if (d->mode == NR_PIXBLOCK_MODE_R8G8B8) {
+				nr_R8G8B8_R8G8B8_A8_RGBA32 (dpx, w, h, d->rs, mpx, m->rs, rgba);
+			} else if (d->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
+				nr_R8G8B8A8_P_R8G8B8A8_P_A8_RGBA32 (dpx, w, h, d->rs, mpx, m->rs, rgba);
+			} else {
+				nr_R8G8B8A8_N_R8G8B8A8_N_A8_RGBA32 (dpx, w, h, d->rs, mpx, m->rs, rgba);
+			}
+		}
+	} else {
+		unsigned int r, g, b, a;
+		int x, y;
+		r = NR_RGBA32_R (rgba);
+		g = NR_RGBA32_G (rgba);
+		b = NR_RGBA32_B (rgba);
+		a = NR_RGBA32_A (rgba);
+		for (y = d->area.y0; y < d->area.y1; y++) {
+			unsigned char *p;
+			p = NR_PIXBLOCK_PX (d) + (y - d->area.y0) * d->rs;
+			for (x = d->area.x0; x < d->area.x1; x++) {
+				unsigned int da;
+				switch (d->mode) {
+				case NR_PIXBLOCK_MODE_R8G8B8:
+					p[0] = NR_COMPOSEN11 (r, a, p[0]);
+					p[1] = NR_COMPOSEN11 (g, a, p[1]);
+					p[2] = NR_COMPOSEN11 (b, a, p[2]);
+					p += 3;
+					break;
+				case NR_PIXBLOCK_MODE_R8G8B8A8P:
+					p[0] = NR_COMPOSENPP (r, a, p[0], p[3]);
+					p[1] = NR_COMPOSENPP (g, a, p[1], p[3]);
+					p[2] = NR_COMPOSENPP (b, a, p[2], p[3]);
+					p[3] = (65025 - (255 - a) * (255 - p[3]) + 127) / 255;
+					p += 4;
+					break;
+				case NR_PIXBLOCK_MODE_R8G8B8A8N:
+					da = 65025 - (255 - a) * (255 - p[3]);
+					p[0] = NR_COMPOSENNN_A7 (r, a, p[0], p[3], da);
+					p[1] = NR_COMPOSENNN_A7 (g, a, p[1], p[3], da);
+					p[2] = NR_COMPOSENNN_A7 (b, a, p[2], p[3], da);
+					p[3] = (da + 127) / 255;
+					p += 4;
+					break;
+				default:
+					break;
+				}
+			}
+		}
+	}
+}
+