diff options
Diffstat (limited to 'render/imagedraw.c')
-rw-r--r-- | render/imagedraw.c | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/render/imagedraw.c b/render/imagedraw.c deleted file mode 100644 index 0654b006..00000000 --- a/render/imagedraw.c +++ /dev/null @@ -1,238 +0,0 @@ -#include <fitz.h> - -typedef unsigned char byte; - -#define lerp(a,b,t) (a + (((b - a) * t) >> 16)) - -static inline byte getcomp(byte *s, int w, int h, int u, int v, int n, int k) -{ - if (u < 0 || u >= w) return 0; - if (v < 0 || v >= h) return 0; - return s[(w * v + u) * n + k]; -} - -static inline int samplecomp(byte *s, int w, int h, int u, int v, int n, int k) -{ - int ui = u >> 16; - int vi = v >> 16; - int ud = u & 0xFFFF; - int vd = v & 0xFFFF; - int a = getcomp(s, w, h, ui, vi, n, k); - int b = getcomp(s, w, h, ui+1, vi, n, k); - int c = getcomp(s, w, h, ui, vi+1, n, k); - int d = getcomp(s, w, h, ui+1, vi+1, n, k); - int ab = lerp(a, b, ud); - int cd = lerp(c, d, ud); - return lerp(ab, cd, vd); -} - -static inline byte getmask(byte *s, int w, int h, int u, int v) -{ - if (u < 0 || u >= w) return 0; - if (v < 0 || v >= h) return 0; - return s[w * v + u]; -} - -static inline int samplemask(byte *s, int w, int h, int u, int v) -{ - int ui = u >> 16; - int vi = v >> 16; - int ud = u & 0xFFFF; - int vd = v & 0xFFFF; - int a = getmask(s, w, h, ui, vi); - int b = getmask(s, w, h, ui+1, vi); - int c = getmask(s, w, h, ui, vi+1); - int d = getmask(s, w, h, ui+1, vi+1); - int ab = lerp(a, b, ud); - int cd = lerp(c, d, ud); - return lerp(ab, cd, vd); -} - -static inline void lerpargb(byte *dst, byte *a, byte *b, int t) -{ - dst[0] = lerp(a[0], b[0], t); - dst[1] = lerp(a[1], b[1], t); - dst[2] = lerp(a[2], b[2], t); - dst[3] = lerp(a[3], b[3], t); -} - -static inline byte *getargb(byte *s, int w, int h, int u, int v) -{ - static byte zero[4] = { 0, 0, 0, 0 }; - if (u < 0 || u >= w) return zero; - if (v < 0 || v >= h) return zero; - return s + ((w * v + u) << 2); -} - -static inline void sampleargb(byte *s, int w, int h, int u, int v, byte *abcd) -{ - byte ab[4]; - byte cd[4]; - int ui = u >> 16; - int vi = v >> 16; - int ud = u & 0xFFFF; - int vd = v & 0xFFFF; - byte *a = getargb(s, w, h, ui, vi); - byte *b = getargb(s, w, h, ui+1, vi); - byte *c = getargb(s, w, h, ui, vi+1); - byte *d = getargb(s, w, h, ui+1, vi+1); - lerpargb(ab, a, b, ud); - lerpargb(cd, c, d, ud); - lerpargb(abcd, ab, cd, vd); -} - -static void img_ncn(FZ_PSRC, int srcn, FZ_PDST, FZ_PCTM) -{ - int k; - while (h--) - { - byte *dstp = dst0; - int u = u0; - int v = v0; - int w = w0; - while (w--) - { - for (k = 0; k < srcn; k++) - { - dstp[k] = samplecomp(src, srcw, srch, u, v, srcn, k); - dstp += srcn; - u += fa; - v += fb; - } - } - dst0 += dstw; - u0 += fc; - v0 += fd; - } -} - -static void img_1c1(FZ_PSRC, FZ_PDST, FZ_PCTM) -{ - while (h--) - { - byte *dstp = dst0; - int u = u0; - int v = v0; - int w = w0; - while (w--) - { - dstp[0] = samplemask(src, srcw, srch, u, v); - dstp ++; - u += fa; - v += fb; - } - dst0 += dstw; - u0 += fc; - v0 += fd; - } -} - -static void img_4c4(FZ_PSRC, FZ_PDST, FZ_PCTM) -{ - while (h--) - { - byte *dstp = dst0; - int u = u0; - int v = v0; - int w = w0; - while (w--) - { - sampleargb(src, srcw, srch, u, v, dstp); - dstp += 4; - u += fa; - v += fb; - } - dst0 += dstw; - u0 += fc; - v0 += fd; - } -} - -static void img_1o1(FZ_PSRC, FZ_PDST, FZ_PCTM) -{ - byte srca; - while (h--) - { - byte *dstp = dst0; - int u = u0; - int v = v0; - int w = w0; - while (w--) - { - srca = samplemask(src, srcw, srch, u, v); - dstp[0] = srca + fz_mul255(dstp[0], 255 - srca); - dstp ++; - u += fa; - v += fb; - } - dst0 += dstw; - u0 += fc; - v0 += fd; - } -} - -static void img_4o4(FZ_PSRC, FZ_PDST, FZ_PCTM) -{ - byte argb[4]; - byte ssa; - while (h--) - { - byte *dstp = dst0; - int u = u0; - int v = v0; - int w = w0; - while (w--) - { - sampleargb(src, srcw, srch, u, v, argb); - ssa = 255 - argb[0]; - dstp[0] = argb[0] + fz_mul255(dstp[0], ssa); - dstp[1] = argb[1] + fz_mul255(dstp[1], ssa); - dstp[2] = argb[2] + fz_mul255(dstp[2], ssa); - dstp[3] = argb[3] + fz_mul255(dstp[3], ssa); - dstp += 4; - u += fa; - v += fb; - } - dst0 += dstw; - u0 += fc; - v0 += fd; - } -} - -static void img_w3i1o4(byte *rgb, FZ_PSRC, FZ_PDST, FZ_PCTM) -{ - byte rgb0 = rgb[0]; - byte rgb1 = rgb[1]; - byte rgb2 = rgb[2]; - byte sa, ssa; - while (h--) - { - byte *dstp = dst0; - int u = u0; - int v = v0; - int w = w0; - while (w--) - { - sa = samplemask(src, srcw, srch, u, v); - ssa = 255 - sa; - dstp[0] = sa + fz_mul255(dstp[0], ssa); - dstp[1] = rgb0 + fz_mul255((short)dstp[1] - rgb0, ssa); - dstp[2] = rgb1 + fz_mul255((short)dstp[2] - rgb1, ssa); - dstp[3] = rgb2 + fz_mul255((short)dstp[3] - rgb2, ssa); - dstp += 4; - u += fa; - v += fb; - } - dst0 += dstw; - u0 += fc; - v0 += fd; - } -} - -void (*fz_img_ncn)(FZ_PSRC, int sn, FZ_PDST, FZ_PCTM) = img_ncn; -void (*fz_img_1c1)(FZ_PSRC, FZ_PDST, FZ_PCTM) = img_1c1; -void (*fz_img_4c4)(FZ_PSRC, FZ_PDST, FZ_PCTM) = img_4c4; -void (*fz_img_1o1)(FZ_PSRC, FZ_PDST, FZ_PCTM) = img_1o1; -void (*fz_img_4o4)(FZ_PSRC, FZ_PDST, FZ_PCTM) = img_4o4; -void (*fz_img_w3i1o4)(byte*,FZ_PSRC,FZ_PDST,FZ_PCTM) = img_w3i1o4; 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