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#include "mupdf/fitz.h"
enum
{
FZ_SEPARATION_DISABLED_RENDER = 3
};
struct fz_separations_s
{
int refs;
int num_separations;
int controllable;
uint32_t state[(2*FZ_MAX_SEPARATIONS + 31) / 32];
uint32_t equiv_rgb[FZ_MAX_SEPARATIONS];
uint32_t equiv_cmyk[FZ_MAX_SEPARATIONS];
char *name[FZ_MAX_SEPARATIONS];
};
fz_separations *fz_new_separations(fz_context *ctx, int controllable)
{
fz_separations *sep;
sep = fz_malloc_struct(ctx, fz_separations);
sep->refs = 1;
sep->controllable = controllable;
return sep;
}
fz_separations *fz_keep_separations(fz_context *ctx, fz_separations *sep)
{
return fz_keep_imp(ctx, sep, &sep->refs);
}
void fz_drop_separations(fz_context *ctx, fz_separations *sep)
{
if (fz_drop_imp(ctx, sep, &sep->refs))
{
int i;
for (i = 0; i < sep->num_separations; i++)
fz_free(ctx, sep->name[i]);
fz_free(ctx, sep);
}
}
void fz_add_separation(fz_context *ctx, fz_separations *sep, uint32_t rgb, uint32_t cmyk, const char *name)
{
int n;
if (!sep)
fz_throw(ctx, FZ_ERROR_GENERIC, "can't add to non-existent separations");
n = sep->num_separations;
if (n == FZ_MAX_SEPARATIONS)
fz_throw(ctx, FZ_ERROR_GENERIC, "too many separations");
sep->name[n] = fz_strdup(ctx, name);
sep->equiv_rgb[n] = rgb;
sep->equiv_cmyk[n] = cmyk;
sep->num_separations++;
}
int fz_separations_controllable(fz_context *ctx, const fz_separations *sep)
{
return (!sep || sep->controllable);
}
void fz_set_separation_behavior(fz_context *ctx, fz_separations *sep, int separation, fz_separation_behavior beh)
{
int shift;
fz_separation_behavior old;
if (!sep || separation < 0 || separation >= sep->num_separations)
fz_throw(ctx, FZ_ERROR_GENERIC, "can't control non-existent separation");
if (beh == FZ_SEPARATION_DISABLED && !sep->controllable)
beh = FZ_SEPARATION_DISABLED_RENDER;
shift = ((2*separation) & 31);
separation >>= 4;
old = (sep->state[separation]>>shift) & 3;
if (old == (fz_separation_behavior)FZ_SEPARATION_DISABLED_RENDER)
old = FZ_SEPARATION_DISABLED;
/* If no change, great */
if (old == beh)
return;
sep->state[separation] = (sep->state[separation] & ~(3<<shift)) | (beh<<shift);
/* FIXME: Could only empty images from the store, or maybe only
* images that depend on separations. */
fz_empty_store(ctx);
}
static inline fz_separation_behavior
sep_state(const fz_separations *sep, int i)
{
return (fz_separation_behavior)((sep->state[i>>5]>>((2*i) & 31)) & 3);
}
fz_separation_behavior fz_separation_current_behavior_internal(fz_context *ctx, const fz_separations *sep, int separation)
{
if (!sep || separation < 0 || separation >= sep->num_separations)
fz_throw(ctx, FZ_ERROR_GENERIC, "can't disable non-existent separation");
return sep_state(sep, separation);
}
fz_separation_behavior fz_separation_current_behavior(fz_context *ctx, const fz_separations *sep, int separation)
{
int beh = fz_separation_current_behavior_internal(ctx, sep, separation);
if (beh == FZ_SEPARATION_DISABLED_RENDER)
return FZ_SEPARATION_DISABLED;
return beh;
}
int fz_separations_all_composite(fz_context *ctx, const fz_separations *sep)
{
int i;
if (!sep)
return 1;
for (i = 0; i < (FZ_MAX_SEPARATIONS + 31) / 32; i++)
if (sep->state[i] != FZ_SEPARATION_COMPOSITE)
return 0;
return 1;
}
const char *fz_get_separation(fz_context *ctx, const fz_separations *sep, int separation, uint32_t *rgb, uint32_t *cmyk)
{
if (!sep || separation < 0 || separation >= sep->num_separations)
fz_throw(ctx, FZ_ERROR_GENERIC, "can't access non-existent separation");
if (rgb)
*rgb = sep->equiv_rgb[separation];
if (cmyk)
*cmyk = sep->equiv_cmyk[separation];
return sep->name[separation];
}
int fz_count_separations(fz_context *ctx, const fz_separations *sep)
{
if (!sep)
return 0;
return sep->num_separations;
}
int fz_count_active_separations(fz_context *ctx, const fz_separations *sep)
{
int i, n, c;
if (!sep)
return 0;
n = sep->num_separations;
c = 0;
for (i = 0; i < n; i++)
if (sep_state(sep, i) == FZ_SEPARATION_SPOT)
c++;
return c;
}
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