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-rw-r--r--fitz/res_colorspace.c1277
1 files changed, 0 insertions, 1277 deletions
diff --git a/fitz/res_colorspace.c b/fitz/res_colorspace.c
deleted file mode 100644
index 07da5a95..00000000
--- a/fitz/res_colorspace.c
+++ /dev/null
@@ -1,1277 +0,0 @@
-#include "mupdf/fitz.h"
-
-#define SLOWCMYK
-
-void
-fz_free_colorspace_imp(fz_context *ctx, fz_storable *cs_)
-{
- fz_colorspace *cs = (fz_colorspace *)cs_;
-
- if (cs->free_data && cs->data)
- cs->free_data(ctx, cs);
- fz_free(ctx, cs);
-}
-
-fz_colorspace *
-fz_new_colorspace(fz_context *ctx, char *name, int n)
-{
- fz_colorspace *cs = fz_malloc(ctx, sizeof(fz_colorspace));
- FZ_INIT_STORABLE(cs, 1, fz_free_colorspace_imp);
- cs->size = sizeof(fz_colorspace);
- fz_strlcpy(cs->name, name, sizeof cs->name);
- cs->n = n;
- cs->to_rgb = NULL;
- cs->from_rgb = NULL;
- cs->free_data = NULL;
- cs->data = NULL;
- return cs;
-}
-
-fz_colorspace *
-fz_keep_colorspace(fz_context *ctx, fz_colorspace *cs)
-{
- return (fz_colorspace *)fz_keep_storable(ctx, &cs->storable);
-}
-
-void
-fz_drop_colorspace(fz_context *ctx, fz_colorspace *cs)
-{
- fz_drop_storable(ctx, &cs->storable);
-}
-
-/* Device colorspace definitions */
-
-static void gray_to_rgb(fz_context *ctx, fz_colorspace *cs, float *gray, float *rgb)
-{
- rgb[0] = gray[0];
- rgb[1] = gray[0];
- rgb[2] = gray[0];
-}
-
-static void rgb_to_gray(fz_context *ctx, fz_colorspace *cs, float *rgb, float *gray)
-{
- float r = rgb[0];
- float g = rgb[1];
- float b = rgb[2];
- gray[0] = r * 0.3f + g * 0.59f + b * 0.11f;
-}
-
-static void rgb_to_rgb(fz_context *ctx, fz_colorspace *cs, float *rgb, float *xyz)
-{
- xyz[0] = rgb[0];
- xyz[1] = rgb[1];
- xyz[2] = rgb[2];
-}
-
-static void bgr_to_rgb(fz_context *ctx, fz_colorspace *cs, float *bgr, float *rgb)
-{
- rgb[0] = bgr[2];
- rgb[1] = bgr[1];
- rgb[2] = bgr[0];
-}
-
-static void rgb_to_bgr(fz_context *ctx, fz_colorspace *cs, float *rgb, float *bgr)
-{
- bgr[0] = rgb[2];
- bgr[1] = rgb[1];
- bgr[2] = rgb[0];
-}
-
-static void cmyk_to_rgb(fz_context *ctx, fz_colorspace *cs, float *cmyk, float *rgb)
-{
-#ifdef SLOWCMYK /* from poppler */
- float c = cmyk[0], m = cmyk[1], y = cmyk[2], k = cmyk[3];
- float r, g, b, x;
- float cm = c * m;
- float c1m = m - cm;
- float cm1 = c - cm;
- float c1m1 = 1 - m - cm1;
- float c1m1y = c1m1 * y;
- float c1m1y1 = c1m1 - c1m1y;
- float c1my = c1m * y;
- float c1my1 = c1m - c1my;
- float cm1y = cm1 * y;
- float cm1y1 = cm1 - cm1y;
- float cmy = cm * y;
- float cmy1 = cm - cmy;
-
- /* this is a matrix multiplication, unrolled for performance */
- x = c1m1y1 * k; /* 0 0 0 1 */
- r = g = b = c1m1y1 - x; /* 0 0 0 0 */
- r += 0.1373 * x;
- g += 0.1216 * x;
- b += 0.1255 * x;
-
- x = c1m1y * k; /* 0 0 1 1 */
- r += 0.1098 * x;
- g += 0.1020 * x;
- x = c1m1y - x; /* 0 0 1 0 */
- r += x;
- g += 0.9490 * x;
-
- x = c1my1 * k; /* 0 1 0 1 */
- r += 0.1412 * x;
- x = c1my1 - x; /* 0 1 0 0 */
- r += 0.9255 * x;
- b += 0.5490 * x;
-
- x = c1my * k; /* 0 1 1 1 */
- r += 0.1333 * x;
- x = c1my - x; /* 0 1 1 0 */
- r += 0.9294 * x;
- g += 0.1098 * x;
- b += 0.1412 * x;
-
- x = cm1y1 * k; /* 1 0 0 1 */
- g += 0.0588 * x;
- b += 0.1412 * x;
- x = cm1y1 - x; /* 1 0 0 0 */
- g += 0.6784 * x;
- b += 0.9373 * x;
-
- x = cm1y * k; /* 1 0 1 1 */
- g += 0.0745 * x;
- x = cm1y - x; /* 1 0 1 0 */
- g += 0.6510 * x;
- b += 0.3137 * x;
-
- x = cmy1 * k; /* 1 1 0 1 */
- b += 0.0078 * x;
- x = cmy1 - x; /* 1 1 0 0 */
- r += 0.1804 * x;
- g += 0.1922 * x;
- b += 0.5725 * x;
-
- x = cmy * (1-k); /* 1 1 1 0 */
- r += 0.2118 * x;
- g += 0.2119 * x;
- b += 0.2235 * x;
- rgb[0] = fz_clamp(r, 0, 1);
- rgb[1] = fz_clamp(g, 0, 1);
- rgb[2] = fz_clamp(b, 0, 1);
-#else
- rgb[0] = 1 - fz_min(1, cmyk[0] + cmyk[3]);
- rgb[1] = 1 - fz_min(1, cmyk[1] + cmyk[3]);
- rgb[2] = 1 - fz_min(1, cmyk[2] + cmyk[3]);
-#endif
-}
-
-static void rgb_to_cmyk(fz_context *ctx, fz_colorspace *cs, float *rgb, float *cmyk)
-{
- float c, m, y, k;
- c = 1 - rgb[0];
- m = 1 - rgb[1];
- y = 1 - rgb[2];
- k = fz_min(c, fz_min(m, y));
- cmyk[0] = c - k;
- cmyk[1] = m - k;
- cmyk[2] = y - k;
- cmyk[3] = k;
-}
-
-static fz_colorspace k_default_gray = { {-1, fz_free_colorspace_imp}, 0, "DeviceGray", 1, gray_to_rgb, rgb_to_gray };
-static fz_colorspace k_default_rgb = { {-1, fz_free_colorspace_imp}, 0, "DeviceRGB", 3, rgb_to_rgb, rgb_to_rgb };
-static fz_colorspace k_default_bgr = { {-1, fz_free_colorspace_imp}, 0, "DeviceRGB", 3, bgr_to_rgb, rgb_to_bgr };
-static fz_colorspace k_default_cmyk = { {-1, fz_free_colorspace_imp}, 0, "DeviceCMYK", 4, cmyk_to_rgb, rgb_to_cmyk };
-
-static fz_colorspace *fz_default_gray = &k_default_gray;
-static fz_colorspace *fz_default_rgb = &k_default_rgb;
-static fz_colorspace *fz_default_bgr = &k_default_bgr;
-static fz_colorspace *fz_default_cmyk = &k_default_cmyk;
-
-struct fz_colorspace_context_s
-{
- int ctx_refs;
- fz_colorspace *gray, *rgb, *bgr, *cmyk;
-};
-
-void fz_new_colorspace_context(fz_context *ctx)
-{
- ctx->colorspace = fz_malloc_struct(ctx, fz_colorspace_context);
- ctx->colorspace->ctx_refs = 1;
- ctx->colorspace->gray = fz_default_gray;
- ctx->colorspace->rgb = fz_default_rgb;
- ctx->colorspace->bgr = fz_default_bgr;
- ctx->colorspace->cmyk = fz_default_cmyk;
-}
-
-fz_colorspace_context *
-fz_keep_colorspace_context(fz_context *ctx)
-{
- if (!ctx || !ctx->colorspace)
- return NULL;
- fz_lock(ctx, FZ_LOCK_ALLOC);
- ctx->colorspace->ctx_refs++;
- fz_unlock(ctx, FZ_LOCK_ALLOC);
- return ctx->colorspace;
-}
-
-void fz_drop_colorspace_context(fz_context *ctx)
-{
- int drop;
- if (!ctx || !ctx->colorspace)
- return;
- fz_lock(ctx, FZ_LOCK_ALLOC);
- drop = --ctx->colorspace->ctx_refs;
- fz_unlock(ctx, FZ_LOCK_ALLOC);
- if (drop == 0)
- fz_free(ctx, ctx->colorspace);
-}
-
-fz_colorspace *
-fz_device_gray(fz_context *ctx)
-{
- return ctx->colorspace->gray;
-}
-
-fz_colorspace *
-fz_device_rgb(fz_context *ctx)
-{
- return ctx->colorspace->rgb;
-}
-
-fz_colorspace *
-fz_device_bgr(fz_context *ctx)
-{
- return ctx->colorspace->bgr;
-}
-
-fz_colorspace *
-fz_device_cmyk(fz_context *ctx)
-{
- return ctx->colorspace->cmyk;
-}
-
-fz_colorspace *
-fz_lookup_device_colorspace(fz_context *ctx, char *name)
-{
- if (!strcmp(name, "DeviceGray"))
- return fz_device_gray(ctx);
- if (!strcmp(name, "DeviceRGB"))
- return fz_device_rgb(ctx);
- if (!strcmp(name, "DeviceBGR"))
- return fz_device_bgr(ctx);
- if (!strcmp(name, "DeviceCMYK"))
- return fz_device_cmyk(ctx);
- assert(!"unknown device colorspace");
- return NULL;
-}
-
-void
-fz_set_device_gray(fz_context *ctx, fz_colorspace *cs)
-{
- fz_drop_colorspace(ctx, ctx->colorspace->gray);
- ctx->colorspace->gray = fz_keep_colorspace(ctx, cs);
-}
-
-void
-fz_set_device_rgb(fz_context *ctx, fz_colorspace *cs)
-{
- fz_drop_colorspace(ctx, ctx->colorspace->rgb);
- ctx->colorspace->rgb = fz_keep_colorspace(ctx, cs);
-}
-
-void
-fz_set_device_bgr(fz_context *ctx, fz_colorspace *cs)
-{
- fz_drop_colorspace(ctx, ctx->colorspace->bgr);
- ctx->colorspace->bgr = fz_keep_colorspace(ctx, cs);
-}
-
-void
-fz_set_device_cmyk(fz_context *ctx, fz_colorspace *cs)
-{
- fz_drop_colorspace(ctx, ctx->colorspace->cmyk);
- ctx->colorspace->cmyk = fz_keep_colorspace(ctx, cs);
-}
-
-int
-fz_colorspace_is_indexed(fz_colorspace *cs)
-{
- return (cs && !strcmp(cs->name, "Indexed"));
-}
-
-/* Fast pixmap color conversions */
-
-static void fast_gray_to_rgb(fz_pixmap *dst, fz_pixmap *src)
-{
- unsigned char *s = src->samples;
- unsigned char *d = dst->samples;
- int n = src->w * src->h;
- while (n--)
- {
- d[0] = s[0];
- d[1] = s[0];
- d[2] = s[0];
- d[3] = s[1];
- s += 2;
- d += 4;
- }
-}
-
-static void fast_gray_to_cmyk(fz_pixmap *dst, fz_pixmap *src)
-{
- unsigned char *s = src->samples;
- unsigned char *d = dst->samples;
- int n = src->w * src->h;
- while (n--)
- {
- d[0] = 0;
- d[1] = 0;
- d[2] = 0;
- d[3] = s[0];
- d[4] = s[1];
- s += 2;
- d += 5;
- }
-}
-
-static void fast_rgb_to_gray(fz_pixmap *dst, fz_pixmap *src)
-{
- unsigned char *s = src->samples;
- unsigned char *d = dst->samples;
- int n = src->w * src->h;
- while (n--)
- {
- d[0] = ((s[0]+1) * 77 + (s[1]+1) * 150 + (s[2]+1) * 28) >> 8;
- d[1] = s[3];
- s += 4;
- d += 2;
- }
-}
-
-static void fast_bgr_to_gray(fz_pixmap *dst, fz_pixmap *src)
-{
- unsigned char *s = src->samples;
- unsigned char *d = dst->samples;
- int n = src->w * src->h;
- while (n--)
- {
- d[0] = ((s[0]+1) * 28 + (s[1]+1) * 150 + (s[2]+1) * 77) >> 8;
- d[1] = s[3];
- s += 4;
- d += 2;
- }
-}
-
-static void fast_rgb_to_cmyk(fz_pixmap *dst, fz_pixmap *src)
-{
- unsigned char *s = src->samples;
- unsigned char *d = dst->samples;
- int n = src->w * src->h;
- while (n--)
- {
- unsigned char c = 255 - s[0];
- unsigned char m = 255 - s[1];
- unsigned char y = 255 - s[2];
- unsigned char k = (unsigned char)fz_mini(c, fz_mini(m, y));
- d[0] = c - k;
- d[1] = m - k;
- d[2] = y - k;
- d[3] = k;
- d[4] = s[3];
- s += 4;
- d += 5;
- }
-}
-
-static void fast_bgr_to_cmyk(fz_pixmap *dst, fz_pixmap *src)
-{
- unsigned char *s = src->samples;
- unsigned char *d = dst->samples;
- int n = src->w * src->h;
- while (n--)
- {
- unsigned char c = 255 - s[2];
- unsigned char m = 255 - s[1];
- unsigned char y = 255 - s[0];
- unsigned char k = (unsigned char)fz_mini(c, fz_mini(m, y));
- d[0] = c - k;
- d[1] = m - k;
- d[2] = y - k;
- d[3] = k;
- d[4] = s[3];
- s += 4;
- d += 5;
- }
-}
-
-static void fast_cmyk_to_gray(fz_pixmap *dst, fz_pixmap *src)
-{
- unsigned char *s = src->samples;
- unsigned char *d = dst->samples;
- int n = src->w * src->h;
- while (n--)
- {
- unsigned char c = fz_mul255(s[0], 77);
- unsigned char m = fz_mul255(s[1], 150);
- unsigned char y = fz_mul255(s[2], 28);
- d[0] = 255 - (unsigned char)fz_mini(c + m + y + s[3], 255);
- d[1] = s[4];
- s += 5;
- d += 2;
- }
-}
-
-#ifdef ARCH_ARM
-static void
-fast_cmyk_to_rgb_ARM(unsigned char *dst, unsigned char *src, int n)
-__attribute__((naked));
-
-static void
-fast_cmyk_to_rgb_ARM(unsigned char *dst, unsigned char *src, int n)
-{
- asm volatile(
- ENTER_ARM
- "stmfd r13!,{r4-r11,r14} \n"
- "@ r0 = dst \n"
- "@ r1 = src \n"
- "@ r2 = n \n"
- "mov r12, #0 @ r12= CMYK = 0 \n"
- "b 2f @ enter loop \n"
- "1: @ White or Black \n"
- "@ Cunning trick: On entry r11 = 0 if black, r11 = FF if white \n"
- "ldrb r7, [r1],#1 @ r8 = s[4] \n"
- "strb r11,[r0],#1 @ d[0] = r \n"
- "strb r11,[r0],#1 @ d[1] = g \n"
- "strb r11,[r0],#1 @ d[2] = b \n"
- "strb r7, [r0],#1 @ d[3] = s[4] \n"
- "subs r2, r2, #1 @ r2 = n-- \n"
- "beq 9f \n"
- "2: @ Main loop starts here \n"
- "ldrb r3, [r1], #4 @ r3 = c \n"
- "ldrb r6, [r1, #-1] @ r6 = k \n"
- "ldrb r5, [r1, #-2] @ r5 = y \n"
- "ldrb r4, [r1, #-3] @ r4 = m \n"
- "eors r11,r6, #0xFF @ if (k == 255) \n"
- "beq 1b @ goto black \n"
- "orr r7, r3, r4, LSL #8 \n"
- "orr r14,r5, r6, LSL #8 \n"
- "orrs r7, r7, r14,LSL #16 @ r7 = cmyk \n"
- "beq 1b @ if (cmyk == 0) white \n"
- "@ At this point, we have to decode a new pixel \n"
- "@ r0 = dst r1 = src r2 = n r7 = cmyk \n"
- "3: @ unmatched \n"
- "stmfd r13!,{r0-r1,r7} @ stash regs for space \n"
- "add r3, r3, r3, LSR #7 @ r3 = c += c>>7 \n"
- "add r4, r4, r4, LSR #7 @ r4 = m += m>>7 \n"
- "add r5, r5, r5, LSR #7 @ r5 = y += y>>7 \n"
- "add r6, r6, r6, LSR #7 @ r6 = k += k>>7 \n"
- "mov r5, r5, LSR #1 @ sacrifice 1 bit of Y \n"
- "mul r8, r3, r4 @ r8 = cm = c * m \n"
- "rsb r9, r8, r4, LSL #8 @ r9 = c1m = (m<<8) - cm \n"
- "rsb r3, r8, r3, LSL #8 @ r3 = cm1 = (c<<8) - cm \n"
- "rsb r4, r4, #0x100 @ r4 = 256-m \n"
- "rsb r4, r3, r4, LSL #8 @ r4 = c1m1 =((256-m)<<8)-cm1 \n"
- "mul r7, r4, r5 @ r7 = c1m1y = c1m1 * y \n"
- "rsb r4, r7, r4, LSL #7 @ r4 = c1m1y1 = (c1m1<<7)-c1m1y \n"
- "mul r10,r9, r5 @ r10= c1my = c1m * y \n"
- "rsb r9, r10,r9, LSL #7 @ r9 = c1my1 = (c1m<<7) - c1my \n"
- "mul r11,r3, r5 @ r11= cm1y = cm1 * y \n"
- "rsb r3, r11,r3, LSL #7 @ r3 = cm1y1 = (cm1<<7) - cm1y \n"
- "mul r5, r8, r5 @ r5 = cmy = cm * y \n"
- "rsb r8, r5, r8, LSL #7 @ r8 = cmy1 = (cm<<7) - cmy \n"
- "@ Register recap: \n"
- "@ r3 = cm1y1 \n"
- "@ r4 = c1m1y1 \n"
- "@ r5 = cmy \n"
- "@ r6 = k \n"
- "@ r7 = c1m1y \n"
- "@ r8 = cmy1 \n"
- "@ r9 = c1my1 \n"
- "@ r10= c1my \n"
- "@ r11= cm1y \n"
- "@ The actual matrix multiplication \n"
- "mul r14,r4, r6 @ r14= x1 = c1m1y1 * k \n"
- "rsb r4, r14,r4, LSL #8 @ r4 = x0 = (c1m1y1<<8) - x1 \n"
- "add r4, r4, r14,LSR #8-5 @ r4 = b = x0 + 32*(x1>>8) \n"
- "sub r1, r4, r14,LSR #8 @ r1 = g = x0 + 31*(x1>>8) \n"
- "add r0, r1, r14,LSR #8-2 @ r0 = r = x0 + 35*(x1>>8) \n"
- " \n"
- "mul r14,r7, r6 @ r14= x1 = c1m1y * k \n"
- "rsb r7, r14,r7, LSL #8 @ r7 = x0 = (c1m1y<<8) - x1 \n"
- "add r0, r0, r7 @ r0 = r += x0 \n"
- "add r1, r1, r7 @ r1 = g += (x0>>8 * 256) \n"
- "sub r1, r1, r7, LSR #8-3 @ 248 \n"
- "sub r1, r1, r7, LSR #8-2 @ 244 \n"
- "sub r1, r1, r7, LSR #8 @ 243 \n"
- "sub r7, r14,r14,LSR #3 @ r7 = 28*(x1>>5) \n"
- "add r0, r0, r7, LSR #8-5 @ r0 = r += 28 * x1 \n"
- "sub r7, r7, r14,LSR #4 @ r7 = 26*(x1>>5) \n"
- "add r1, r1, r7, LSR #8-5 @ r1 = g += 26 * x1 \n"
- " \n"
- "mul r14,r9, r6 @ r14= x1 = c1my1 * k \n"
- "sub r9, r9, r14,LSR #8 @ r9 = x0>>8 = c1my1 - (x1>>8) \n"
- "add r0, r0, r14,LSR #8-5 @ r0 = r += (x1>>8)*32 \n"
- "add r0, r0, r14,LSR #8-2 @ r0 = r += (x1>>8)*36 \n"
- "mov r14,#237 @ r14= 237 \n"
- "mla r0,r14,r9,r0 @ r14= r += x0*237 \n"
- "mov r14,#141 @ r14= 141 \n"
- "mla r4,r14,r9,r4 @ r14= b += x0*141 \n"
- " \n"
- "mul r14,r10,r6 @ r14= x1 = c1my * k \n"
- "sub r10,r10,r14,LSR #8 @ r10= x0>>8 = c1my - (x1>>8) \n"
- "add r0, r0, r14,LSR #8-5 @ r0 = r += 32 * x1 \n"
- "add r0, r0, r14,LSR #8-1 @ r0 = r += 34 * x1 \n"
- "mov r14,#238 @ r14= 238 \n"
- "mla r0,r14,r10,r0 @ r0 = r += 238 * x0 \n"
- "mov r14,#28 @ r14= 28 \n"
- "mla r1,r14,r10,r1 @ r1 = g += 28 * x0 \n"
- "mov r14,#36 @ r14= 36 \n"
- "mla r4,r14,r10,r4 @ r4 = b += 36 * x0 \n"
- " \n"
- "mul r14,r3, r6 @ r14= x1 = cm1y1 * k \n"
- "sub r3, r3, r14,LSR #8 @ r3 = x1>>8 = cm1y1 - (x1>>8) \n"
- "add r1, r1, r14,LSR #8-4 @ r1 = g += 16*x1 \n"
- "sub r1, r1, r14,LSR #8 @ 15*x1 \n"
- "add r4, r4, r14,LSR #8-5 @ r4 = b += 32*x1 \n"
- "add r4, r4, r14,LSR #8-2 @ 36*x1 \n"
- "mov r14,#174 @ r14= 174 \n"
- "mla r1, r14,r3, r1 @ r1 = g += 174 * x0 \n"
- "mov r14,#240 @ r14= 240 \n"
- "mla r4, r14,r3, r4 @ r4 = b += 240 * x0 \n"
- " \n"
- "mul r14,r11,r6 @ r14= x1 = cm1y * k \n"
- "sub r11,r11,r14,LSR #8 @ r11= x0>>8 = cm1y - (x1>>8) \n"
- "add r1, r1, r14,LSR #8-4 @ r1 = g += x1 * 16 \n"
- "add r1, r1, r14,LSR #8 @ x1 * 17 \n"
- "add r1, r1, r14,LSR #8-1 @ x1 * 19 \n"
- "mov r14,#167 @ r14 = 167 \n"
- "mla r1, r14,r11,r1 @ r1 = g += 167 * x0 \n"
- "mov r14,#80 @ r14 = 80 \n"
- "mla r4, r14,r11,r4 @ r4 = b += 80 * x0 \n"
- " \n"
- "mul r14,r8, r6 @ r14= x1 = cmy1 * k \n"
- "sub r8, r8, r14,LSR #8 @ r8 = x0>>8 = cmy1 - (x1>>8) \n"
- "add r4, r4, r14,LSR #8-1 @ r4 = b += x1 * 2 \n"
- "mov r14,#46 @ r14=46 \n"
- "mla r0, r14,r8, r0 @ r0 = r += 46 * x0 \n"
- "mov r14,#49 @ r14=49 \n"
- "mla r1, r14,r8, r1 @ r1 = g += 49 * x0 \n"
- "mov r14,#147 @ r14=147 \n"
- "mla r4, r14,r8, r4 @ r4 = b += 147 * x0 \n"
- " \n"
- "rsb r6, r6, #256 @ r6 = k = 256-k \n"
- "mul r14,r5, r6 @ r14= x0 = cmy * (256-k) \n"
- "mov r11,#54 @ r11= 54 \n"
- "mov r14,r14,LSR #8 @ r14= (x0>>8) \n"
- "mov r8,#57 @ r8 = 57 \n"
- "mla r0,r14,r11,r0 @ r0 = r += 54*x0 \n"
- "mla r1,r14,r11,r1 @ r1 = g += 54*x0 \n"
- "mla r4,r14,r8, r4 @ r4 = b += 57*x0 \n"
- " \n"
- "sub r8, r0, r0, LSR #8 @ r8 = r -= (r>>8) \n"
- "sub r9, r1, r1, LSR #8 @ r9 = g -= (r>>8) \n"
- "sub r10,r4, r4, LSR #8 @ r10= b -= (r>>8) \n"
- "ldmfd r13!,{r0-r1,r12} \n"
- "mov r8, r8, LSR #23 @ r8 = r>>23 \n"
- "mov r9, r9, LSR #23 @ r9 = g>>23 \n"
- "mov r10,r10,LSR #23 @ r10= b>>23 \n"
- "ldrb r14,[r1],#1 @ r8 = s[4] \n"
- "strb r8, [r0],#1 @ d[0] = r \n"
- "strb r9, [r0],#1 @ d[1] = g \n"
- "strb r10,[r0],#1 @ d[2] = b \n"
- "strb r14,[r0],#1 @ d[3] = s[4] \n"
- "subs r2, r2, #1 @ r2 = n-- \n"
- "beq 9f \n"
- "@ At this point, we've just decoded a pixel \n"
- "@ r0 = dst r1 = src r2 = n r8 = r r9 = g r10= b r12= CMYK \n"
- "4: \n"
- "ldrb r3, [r1], #4 @ r3 = c \n"
- "ldrb r6, [r1, #-1] @ r6 = k \n"
- "ldrb r5, [r1, #-2] @ r5 = y \n"
- "ldrb r4, [r1, #-3] @ r4 = m \n"
- "eors r11,r6, #0xFF @ if (k == 255) \n"
- "beq 1b @ goto black \n"
- "orr r7, r3, r4, LSL #8 \n"
- "orr r14,r5, r6, LSL #8 \n"
- "orrs r7, r7, r14,LSL #16 @ r7 = cmyk \n"
- "beq 1b @ if (cmyk == 0) white \n"
- "cmp r7, r12 @ if (cmyk != CMYK) \n"
- "bne 3b @ not the same, loop \n"
- "@ If we get here, we just matched a pixel we have just decoded \n"
- "ldrb r3, [r1],#1 @ r8 = s[4] \n"
- "strb r8, [r0],#1 @ d[0] = r \n"
- "strb r9, [r0],#1 @ d[1] = g \n"
- "strb r10,[r0],#1 @ d[2] = b \n"
- "strb r3, [r0],#1 @ d[3] = s[4] \n"
- "subs r2, r2, #1 @ r2 = n-- \n"
- "bne 4b \n"
- "9: \n"
- "ldmfd r13!,{r4-r11,PC} @ pop, return to thumb \n"
- ENTER_THUMB
- );
-}
-#endif
-
-static void fast_cmyk_to_rgb(fz_context *ctx, fz_pixmap *dst, fz_pixmap *src)
-{
- unsigned char *s = src->samples;
- unsigned char *d = dst->samples;
- int n = src->w * src->h;
-#ifdef ARCH_ARM
- fast_cmyk_to_rgb_ARM(d, s, n);
-#else
- unsigned int C,M,Y,K,r,g,b;
-
- C = 0;
- M = 0;
- Y = 0;
- K = 0;
- r = 255;
- g = 255;
- b = 255;
-
- while (n--)
- {
-#ifdef SLOWCMYK
- unsigned int c = s[0];
- unsigned int m = s[1];
- unsigned int y = s[2];
- unsigned int k = s[3];
- unsigned int cm, c1m, cm1, c1m1, c1m1y, c1m1y1, c1my, c1my1, cm1y, cm1y1, cmy, cmy1;
- unsigned int x0, x1;
-
- if (c == C && m == M && y == Y && k == K)
- {
- /* Nothing to do */
- }
- else if (k == 0 && c == 0 && m == 0 && y == 0)
- {
- r = g = b = 255;
- }
- else if (k == 255)
- {
- r = g = b = 0;
- }
- else
- {
- c += c>>7;
- m += m>>7;
- y += y>>7;
- k += k>>7;
- y >>= 1; /* Ditch 1 bit of Y to avoid overflow */
- cm = c * m;
- c1m = (m<<8) - cm;
- cm1 = (c<<8) - cm;
- c1m1 = ((256 - m)<<8) - cm1;
- c1m1y = c1m1 * y;
- c1m1y1 = (c1m1<<7) - c1m1y;
- c1my = c1m * y;
- c1my1 = (c1m<<7) - c1my;
- cm1y = cm1 * y;
- cm1y1 = (cm1<<7) - cm1y;
- cmy = cm * y;
- cmy1 = (cm<<7) - cmy;
-
- /* this is a matrix multiplication, unrolled for performance */
- x1 = c1m1y1 * k; /* 0 0 0 1 */
- x0 = (c1m1y1<<8) - x1; /* 0 0 0 0 */
- x1 = x1>>8; /* From 23 fractional bits to 15 */
- r = g = b = x0;
- r += 35 * x1; /* 0.1373 */
- g += 31 * x1; /* 0.1216 */
- b += 32 * x1; /* 0.1255 */
-
- x1 = c1m1y * k; /* 0 0 1 1 */
- x0 = (c1m1y<<8) - x1; /* 0 0 1 0 */
- x1 >>= 8; /* From 23 fractional bits to 15 */
- r += 28 * x1; /* 0.1098 */
- g += 26 * x1; /* 0.1020 */
- r += x0;
- x0 >>= 8; /* From 23 fractional bits to 15 */
- g += 243 * x0; /* 0.9490 */
-
- x1 = c1my1 * k; /* 0 1 0 1 */
- x0 = (c1my1<<8) - x1; /* 0 1 0 0 */
- x1 >>= 8; /* From 23 fractional bits to 15 */
- x0 >>= 8; /* From 23 fractional bits to 15 */
- r += 36 * x1; /* 0.1412 */
- r += 237 * x0; /* 0.9255 */
- b += 141 * x0; /* 0.5490 */
-
- x1 = c1my * k; /* 0 1 1 1 */
- x0 = (c1my<<8) - x1; /* 0 1 1 0 */
- x1 >>= 8; /* From 23 fractional bits to 15 */
- x0 >>= 8; /* From 23 fractional bits to 15 */
- r += 34 * x1; /* 0.1333 */
- r += 238 * x0; /* 0.9294 */
- g += 28 * x0; /* 0.1098 */
- b += 36 * x0; /* 0.1412 */
-
- x1 = cm1y1 * k; /* 1 0 0 1 */
- x0 = (cm1y1<<8) - x1; /* 1 0 0 0 */
- x1 >>= 8; /* From 23 fractional bits to 15 */
- x0 >>= 8; /* From 23 fractional bits to 15 */
- g += 15 * x1; /* 0.0588 */
- b += 36 * x1; /* 0.1412 */
- g += 174 * x0; /* 0.6784 */
- b += 240 * x0; /* 0.9373 */
-
- x1 = cm1y * k; /* 1 0 1 1 */
- x0 = (cm1y<<8) - x1; /* 1 0 1 0 */
- x1 >>= 8; /* From 23 fractional bits to 15 */
- x0 >>= 8; /* From 23 fractional bits to 15 */
- g += 19 * x1; /* 0.0745 */
- g += 167 * x0; /* 0.6510 */
- b += 80 * x0; /* 0.3137 */
-
- x1 = cmy1 * k; /* 1 1 0 1 */
- x0 = (cmy1<<8) - x1; /* 1 1 0 0 */
- x1 >>= 8; /* From 23 fractional bits to 15 */
- x0 >>= 8; /* From 23 fractional bits to 15 */
- b += 2 * x1; /* 0.0078 */
- r += 46 * x0; /* 0.1804 */
- g += 49 * x0; /* 0.1922 */
- b += 147 * x0; /* 0.5725 */
-
- x0 = cmy * (256-k); /* 1 1 1 0 */
- x0 >>= 8; /* From 23 fractional bits to 15 */
- r += 54 * x0; /* 0.2118 */
- g += 54 * x0; /* 0.2119 */
- b += 57 * x0; /* 0.2235 */
-
- r -= (r>>8);
- g -= (g>>8);
- b -= (b>>8);
- r = r>>23;
- g = g>>23;
- b = b>>23;
- C = c;
- M = m;
- Y = y;
- K = k;
- }
- d[0] = r;
- d[1] = g;
- d[2] = b;
-#else
- d[0] = 255 - (unsigned char)fz_mini(s[0] + s[3], 255);
- d[1] = 255 - (unsigned char)fz_mini(s[1] + s[3], 255);
- d[2] = 255 - (unsigned char)fz_mini(s[2] + s[3], 255);
-#endif
- d[3] = s[4];
- s += 5;
- d += 4;
- }
-#endif
-}
-
-static void fast_cmyk_to_bgr(fz_context *ctx, fz_pixmap *dst, fz_pixmap *src)
-{
- unsigned char *s = src->samples;
- unsigned char *d = dst->samples;
- int n = src->w * src->h;
- while (n--)
- {
-#ifdef SLOWCMYK
- float cmyk[4], rgb[3];
- cmyk[0] = s[0] / 255.0f;
- cmyk[1] = s[1] / 255.0f;
- cmyk[2] = s[2] / 255.0f;
- cmyk[3] = s[3] / 255.0f;
- cmyk_to_rgb(ctx, NULL, cmyk, rgb);
- d[0] = rgb[2] * 255;
- d[1] = rgb[1] * 255;
- d[2] = rgb[0] * 255;
-#else
- d[0] = 255 - (unsigned char)fz_mini(s[2] + s[3], 255);
- d[1] = 255 - (unsigned char)fz_mini(s[1] + s[3], 255);
- d[2] = 255 - (unsigned char)fz_mini(s[0] + s[3], 255);
-#endif
- d[3] = s[4];
- s += 5;
- d += 4;
- }
-}
-
-static void fast_rgb_to_bgr(fz_pixmap *dst, fz_pixmap *src)
-{
- unsigned char *s = src->samples;
- unsigned char *d = dst->samples;
- int n = src->w * src->h;
- while (n--)
- {
- d[0] = s[2];
- d[1] = s[1];
- d[2] = s[0];
- d[3] = s[3];
- s += 4;
- d += 4;
- }
-}
-
-static void
-fz_std_conv_pixmap(fz_context *ctx, fz_pixmap *dst, fz_pixmap *src)
-{
- float srcv[FZ_MAX_COLORS];
- float dstv[FZ_MAX_COLORS];
- int srcn, dstn;
- int k, i;
- unsigned int xy;
-
- fz_colorspace *ss = src->colorspace;
- fz_colorspace *ds = dst->colorspace;
-
- unsigned char *s = src->samples;
- unsigned char *d = dst->samples;
-
- assert(src->w == dst->w && src->h == dst->h);
- assert(src->n == ss->n + 1);
- assert(dst->n == ds->n + 1);
-
- srcn = ss->n;
- dstn = ds->n;
-
- xy = (unsigned int)(src->w * src->h);
-
- /* Special case for Lab colorspace (scaling of components to float) */
- if (!strcmp(ss->name, "Lab") && srcn == 3)
- {
- fz_color_converter cc;
-
- fz_lookup_color_converter(&cc, ctx, ds, ss);
- for (; xy > 0; xy--)
- {
- srcv[0] = *s++ / 255.0f * 100;
- srcv[1] = *s++ - 128;
- srcv[2] = *s++ - 128;
-
- cc.convert(&cc, dstv, srcv);
-
- for (k = 0; k < dstn; k++)
- *d++ = dstv[k] * 255;
-
- *d++ = *s++;
- }
- }
-
- /* Brute-force for small images */
- else if (xy < 256)
- {
- fz_color_converter cc;
-
- fz_lookup_color_converter(&cc, ctx, ds, ss);
- for (; xy > 0; xy--)
- {
- for (k = 0; k < srcn; k++)
- srcv[k] = *s++ / 255.0f;
-
- cc.convert(&cc, dstv, srcv);
-
- for (k = 0; k < dstn; k++)
- *d++ = dstv[k] * 255;
-
- *d++ = *s++;
- }
- }
-
- /* 1-d lookup table for separation and similar colorspaces */
- else if (srcn == 1)
- {
- unsigned char lookup[FZ_MAX_COLORS * 256];
- fz_color_converter cc;
-
- fz_lookup_color_converter(&cc, ctx, ds, ss);
- for (i = 0; i < 256; i++)
- {
- srcv[0] = i / 255.0f;
- cc.convert(&cc, dstv, srcv);
- for (k = 0; k < dstn; k++)
- lookup[i * dstn + k] = dstv[k] * 255;
- }
-
- for (; xy > 0; xy--)
- {
- i = *s++;
- for (k = 0; k < dstn; k++)
- *d++ = lookup[i * dstn + k];
- *d++ = *s++;
- }
- }
-
- /* Memoize colors using a hash table for the general case */
- else
- {
- fz_hash_table *lookup;
- unsigned char *color;
- unsigned char dummy = s[0] ^ 255;
- unsigned char *sold = &dummy;
- fz_color_converter cc;
-
- fz_lookup_color_converter(&cc, ctx, ds, ss);
- lookup = fz_new_hash_table(ctx, 509, srcn, -1);
-
- for (; xy > 0; xy--)
- {
- if (*s == *sold && memcmp(sold,s,srcn) == 0)
- {
- sold = s;
- memcpy(d, d-dstn-1, dstn);
- d += dstn;
- s += srcn;
- *d++ = *s++;
- }
- else
- {
- sold = s;
- color = fz_hash_find(ctx, lookup, s);
- if (color)
- {
- memcpy(d, color, dstn);
- s += srcn;
- d += dstn;
- *d++ = *s++;
- }
- else
- {
- for (k = 0; k < srcn; k++)
- srcv[k] = *s++ / 255.0f;
- cc.convert(&cc, dstv, srcv);
- for (k = 0; k < dstn; k++)
- *d++ = dstv[k] * 255;
-
- fz_hash_insert(ctx, lookup, s - srcn, d - dstn);
-
- *d++ = *s++;
- }
- }
- }
-
- fz_free_hash(ctx, lookup);
- }
-}
-
-void
-fz_convert_pixmap(fz_context *ctx, fz_pixmap *dp, fz_pixmap *sp)
-{
- fz_colorspace *ss = sp->colorspace;
- fz_colorspace *ds = dp->colorspace;
-
- assert(ss && ds);
-
- dp->interpolate = sp->interpolate;
-
- if (ss == fz_default_gray)
- {
- if (ds == fz_default_rgb) fast_gray_to_rgb(dp, sp);
- else if (ds == fz_default_bgr) fast_gray_to_rgb(dp, sp); /* bgr == rgb here */
- else if (ds == fz_default_cmyk) fast_gray_to_cmyk(dp, sp);
- else fz_std_conv_pixmap(ctx, dp, sp);
- }
-
- else if (ss == fz_default_rgb)
- {
- if (ds == fz_default_gray) fast_rgb_to_gray(dp, sp);
- else if (ds == fz_default_bgr) fast_rgb_to_bgr(dp, sp);
- else if (ds == fz_default_cmyk) fast_rgb_to_cmyk(dp, sp);
- else fz_std_conv_pixmap(ctx, dp, sp);
- }
-
- else if (ss == fz_default_bgr)
- {
- if (ds == fz_default_gray) fast_bgr_to_gray(dp, sp);
- else if (ds == fz_default_rgb) fast_rgb_to_bgr(dp, sp); /* bgr = rgb here */
- else if (ds == fz_default_cmyk) fast_bgr_to_cmyk(sp, dp);
- else fz_std_conv_pixmap(ctx, dp, sp);
- }
-
- else if (ss == fz_default_cmyk)
- {
- if (ds == fz_default_gray) fast_cmyk_to_gray(dp, sp);
- else if (ds == fz_default_bgr) fast_cmyk_to_bgr(ctx, dp, sp);
- else if (ds == fz_default_rgb) fast_cmyk_to_rgb(ctx, dp, sp);
- else fz_std_conv_pixmap(ctx, dp, sp);
- }
-
- else fz_std_conv_pixmap(ctx, dp, sp);
-}
-
-/* Convert a single color */
-
-static void
-std_conv_color(fz_color_converter *cc, float *dstv, float *srcv)
-{
- float rgb[3];
- int i;
- fz_colorspace *srcs = cc->ss;
- fz_colorspace *dsts = cc->ds;
- fz_context *ctx = cc->ctx;
-
- if (srcs != dsts)
- {
- assert(srcs->to_rgb && dsts->from_rgb);
- srcs->to_rgb(ctx, srcs, srcv, rgb);
- dsts->from_rgb(ctx, dsts, rgb, dstv);
- for (i = 0; i < dsts->n; i++)
- dstv[i] = fz_clamp(dstv[i], 0, 1);
- }
- else
- {
- for (i = 0; i < srcs->n; i++)
- dstv[i] = srcv[i];
- }
-}
-
-static void
-g2rgb(fz_color_converter *cc, float *dv, float *sv)
-{
- dv[0] = sv[0];
- dv[1] = sv[0];
- dv[2] = sv[0];
-}
-
-static void
-g2cmyk(fz_color_converter *cc, float *dv, float *sv)
-{
- dv[0] = 0;
- dv[1] = 0;
- dv[2] = 0;
- dv[3] = sv[0];
-}
-
-static void
-rgb2g(fz_color_converter *cc, float *dv, float *sv)
-{
- dv[0] = sv[0] * 0.3f + sv[1] * 0.59f + sv[2] * 0.11f;
-}
-
-static void
-rgb2bgr(fz_color_converter *cc, float *dv, float *sv)
-{
- dv[0] = sv[2];
- dv[1] = sv[1];
- dv[2] = sv[0];
-}
-
-static void
-rgb2cmyk(fz_color_converter *cc, float *dv, float *sv)
-{
- float c = 1 - sv[0];
- float m = 1 - sv[1];
- float y = 1 - sv[2];
- float k = fz_min(c, fz_min(m, y));
- dv[0] = c - k;
- dv[1] = m - k;
- dv[2] = y - k;
- dv[3] = k;
-}
-
-static void
-bgr2g(fz_color_converter *cc, float *dv, float *sv)
-{
- dv[0] = sv[0] * 0.11f + sv[1] * 0.59f + sv[2] * 0.3f;
-}
-
-static void
-bgr2cmyk(fz_color_converter *cc, float *dv, float *sv)
-{
- float c = 1 - sv[2];
- float m = 1 - sv[1];
- float y = 1 - sv[0];
- float k = fz_min(c, fz_min(m, y));
- dv[0] = c - k;
- dv[1] = m - k;
- dv[2] = y - k;
- dv[3] = k;
-}
-
-static void
-cmyk2g(fz_color_converter *cc, float *dv, float *sv)
-{
- float c = sv[0] * 0.3f;
- float m = sv[1] * 0.59f;
- float y = sv[2] * 0.11f;
- dv[0] = 1 - fz_min(c + m + y + sv[3], 1);
-}
-
-static void
-cmyk2rgb(fz_color_converter *cc, float *dv, float *sv)
-{
-#ifdef SLOWCMYK
- cmyk_to_rgb(cc->ctx, NULL, sv, dv);
-#else
- dv[0] = 1 - fz_min(sv[0] + sv[3], 1);
- dv[1] = 1 - fz_min(sv[1] + sv[3], 1);
- dv[2] = 1 - fz_min(sv[2] + sv[3], 1);
-#endif
-}
-
-static void
-cmyk2bgr(fz_color_converter *cc, float *dv, float *sv)
-{
-#ifdef SLOWCMYK
- float rgb[3];
- cmyk_to_rgb(cc->ctx, NULL, sv, rgb);
- dv[0] = rgb[2];
- dv[1] = rgb[1];
- dv[2] = rgb[0];
-#else
- dv[0] = 1 - fz_min(sv[2] + sv[3], 1);
- dv[1] = 1 - fz_min(sv[1] + sv[3], 1);
- dv[2] = 1 - fz_min(sv[0] + sv[3], 1);
-#endif
-}
-
-void fz_lookup_color_converter(fz_color_converter *cc, fz_context *ctx, fz_colorspace *ds, fz_colorspace *ss)
-{
- cc->ctx = ctx;
- cc->ds = ds;
- cc->ss = ss;
- if (ss == fz_default_gray)
- {
- if ((ds == fz_default_rgb) || (ds == fz_default_bgr))
- cc->convert = g2rgb;
- else if (ds == fz_default_cmyk)
- cc->convert = g2cmyk;
- else
- cc->convert = std_conv_color;
- }
-
- else if (ss == fz_default_rgb)
- {
- if (ds == fz_default_gray)
- cc->convert = rgb2g;
- else if (ds == fz_default_bgr)
- cc->convert = rgb2bgr;
- else if (ds == fz_default_cmyk)
- cc->convert = rgb2cmyk;
- else
- cc->convert = std_conv_color;
- }
-
- else if (ss == fz_default_bgr)
- {
- if (ds == fz_default_gray)
- cc->convert = bgr2g;
- else if (ds == fz_default_rgb)
- cc->convert = rgb2bgr;
- else if (ds == fz_default_cmyk)
- cc->convert = bgr2cmyk;
- else
- cc->convert = std_conv_color;
- }
-
- else if (ss == fz_default_cmyk)
- {
- if (ds == fz_default_gray)
- cc->convert = cmyk2g;
- else if (ds == fz_default_rgb)
- cc->convert = cmyk2rgb;
- else if (ds == fz_default_bgr)
- cc->convert = cmyk2bgr;
- else
- cc->convert = std_conv_color;
- }
-
- else
- cc->convert = std_conv_color;
-}
-
-void
-fz_convert_color(fz_context *ctx, fz_colorspace *ds, float *dv, fz_colorspace *ss, float *sv)
-{
- fz_color_converter cc;
-
- fz_lookup_color_converter(&cc, ctx, ds, ss);
- cc.convert(&cc, dv, sv);
-}
-
-/* Indexed */
-
-struct indexed
-{
- fz_colorspace *base;
- int high;
- unsigned char *lookup;
-};
-
-static void
-indexed_to_rgb(fz_context *ctx, fz_colorspace *cs, float *color, float *rgb)
-{
- struct indexed *idx = cs->data;
- float alt[FZ_MAX_COLORS];
- int i, k;
- i = color[0] * 255;
- i = fz_clampi(i, 0, idx->high);
- for (k = 0; k < idx->base->n; k++)
- alt[k] = idx->lookup[i * idx->base->n + k] / 255.0f;
- idx->base->to_rgb(ctx, idx->base, alt, rgb);
-}
-
-static void
-free_indexed(fz_context *ctx, fz_colorspace *cs)
-{
- struct indexed *idx = cs->data;
- if (idx->base)
- fz_drop_colorspace(ctx, idx->base);
- fz_free(ctx, idx->lookup);
- fz_free(ctx, idx);
-}
-
-fz_colorspace *
-fz_new_indexed_colorspace(fz_context *ctx, fz_colorspace *base, int high, unsigned char *lookup)
-{
- fz_colorspace *cs;
- struct indexed *idx;
-
- idx = fz_malloc_struct(ctx, struct indexed);
- idx->lookup = lookup;
- idx->base = base;
- idx->high = high;
-
- fz_try(ctx)
- {
- cs = fz_new_colorspace(ctx, "Indexed", 1);
- cs->to_rgb = indexed_to_rgb;
- cs->free_data = free_indexed;
- cs->data = idx;
- cs->size += sizeof(*idx) + (base->n * (idx->high + 1)) + base->size;
- }
- fz_catch(ctx)
- {
- fz_free(ctx, idx);
- fz_rethrow_message(ctx, "failed to create indexed colorspace");
- }
- return cs;
-}
-
-fz_pixmap *
-fz_expand_indexed_pixmap(fz_context *ctx, fz_pixmap *src)
-{
- struct indexed *idx;
- fz_pixmap *dst;
- unsigned char *s, *d;
- int y, x, k, n, high;
- unsigned char *lookup;
- fz_irect bbox;
-
- assert(src->colorspace->to_rgb == indexed_to_rgb);
- assert(src->n == 2);
-
- idx = src->colorspace->data;
- high = idx->high;
- lookup = idx->lookup;
- n = idx->base->n;
-
- dst = fz_new_pixmap_with_bbox(ctx, idx->base, fz_pixmap_bbox(ctx, src, &bbox));
- s = src->samples;
- d = dst->samples;
-
- for (y = 0; y < src->h; y++)
- {
- for (x = 0; x < src->w; x++)
- {
- int v = *s++;
- int a = *s++;
- v = fz_mini(v, high);
- for (k = 0; k < n; k++)
- *d++ = fz_mul255(lookup[v * n + k], a);
- *d++ = a;
- }
- }
-
- dst->interpolate = src->interpolate;
-
- return dst;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 21:44:36 +0000