moved over the polyfiller code and implemented blending

[bootcensus] / src / census / gfxutil.h

diff --git a/src/census/gfxutil.h b/src/census/gfxutil.h
new file mode 100644 (file)
index 0000000..feb4d01
--- /dev/null
+++ b/src/census/gfxutil.h
@@ -0,0 +1,33 @@
+#ifndef GFXUTIL_H_
+#define GFXUTIL_H_
+
+#include "inttypes.h"
+
+#define PACK_RGB16(r, g, b) \
+       ((((uint16_t)(r) << 8) & 0xf800) | \
+        (((uint16_t)(g) << 3) & 0x7e0) | \
+        (((uint16_t)(b) >> 3) & 0x1f))
+
+#define UNPACK_R16(c)  (((c) >> 8) & 0xf8)
+#define UNPACK_G16(c)  (((c) >> 3) & 0xfc)
+#define UNPACK_B16(c)  (((c) << 3) & 0xf8)
+
+#define PACK_RGB32(r, g, b) \
+       ((((uint32_t)(r) & 0xff) << 16) | \
+        (((uint32_t)(g) & 0xff) << 8) | \
+        ((uint32_t)(b) & 0xff))
+
+#define UNPACK_R32(c)  (((c) >> 16) & 0xff)
+#define UNPACK_G32(c)  (((c) >> 8) & 0xff)
+#define UNPACK_B32(c)  ((c) & 0xff)
+
+int clip_line(int *x0, int *y0, int *x1, int *y1, int xmin, int ymin, int xmax, int ymax);
+void draw_line(int x0, int y0, int x1, int y1, uint32_t color);
+
+/* scale in 24.8 fixed point */
+void blur_grey_horiz(uint32_t *dest, uint32_t *src, int xsz, int ysz, int radius, int scale);
+void blur_grey_vert(uint32_t *dest, uint32_t *src, int xsz, int ysz, int radius, int scale);
+
+void convimg_rgb24_rgb16(uint16_t *dest, unsigned char *src, int xsz, int ysz);
+
+#endif /* GFXUTIL_H_ */