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-rw-r--r--source/pdf/pdf-colorspace.c107
1 files changed, 51 insertions, 56 deletions
diff --git a/source/pdf/pdf-colorspace.c b/source/pdf/pdf-colorspace.c
index 4b250f6c..a58dc961 100644
--- a/source/pdf/pdf-colorspace.c
+++ b/source/pdf/pdf-colorspace.c
@@ -3,14 +3,13 @@
/* ICCBased */
static fz_colorspace *
-load_icc_based(pdf_document *doc, pdf_obj *dict)
+load_icc_based(fz_context *ctx, pdf_document *doc, pdf_obj *dict)
{
int n;
pdf_obj *obj;
- fz_context *ctx = doc->ctx;
- n = pdf_to_int(pdf_dict_gets(dict, "N"));
- obj = pdf_dict_gets(dict, "Alternate");
+ n = pdf_to_int(ctx, pdf_dict_gets(ctx, dict, "N"));
+ obj = pdf_dict_gets(ctx, dict, "Alternate");
if (obj)
{
@@ -18,7 +17,7 @@ load_icc_based(pdf_document *doc, pdf_obj *dict)
fz_try(ctx)
{
- cs_alt = pdf_load_colorspace(doc, obj);
+ cs_alt = pdf_load_colorspace(ctx, doc, obj);
if (cs_alt->n != n)
{
fz_drop_colorspace(ctx, cs_alt);
@@ -84,7 +83,7 @@ rgb_to_lab(fz_context *ctx, fz_colorspace *cs, const float *rgb, float *lab)
lab[2] = rgb[2];
}
-static fz_colorspace k_device_lab = { {-1, fz_free_colorspace_imp}, 0, "Lab", 3, lab_to_rgb, rgb_to_lab };
+static fz_colorspace k_device_lab = { {-1, fz_drop_colorspace_imp}, 0, "Lab", 3, lab_to_rgb, rgb_to_lab };
static fz_colorspace *fz_device_lab = &k_device_lab;
/* Separation and DeviceN */
@@ -114,14 +113,13 @@ free_separation(fz_context *ctx, fz_colorspace *cs)
}
static fz_colorspace *
-load_separation(pdf_document *doc, pdf_obj *array)
+load_separation(fz_context *ctx, pdf_document *doc, pdf_obj *array)
{
fz_colorspace *cs;
struct separation *sep = NULL;
- fz_context *ctx = doc->ctx;
- pdf_obj *nameobj = pdf_array_get(array, 1);
- pdf_obj *baseobj = pdf_array_get(array, 2);
- pdf_obj *tintobj = pdf_array_get(array, 3);
+ pdf_obj *nameobj = pdf_array_get(ctx, array, 1);
+ pdf_obj *baseobj = pdf_array_get(ctx, array, 2);
+ pdf_obj *tintobj = pdf_array_get(ctx, array, 3);
fz_colorspace *base;
fz_function *tint = NULL;
int n;
@@ -129,21 +127,21 @@ load_separation(pdf_document *doc, pdf_obj *array)
fz_var(tint);
fz_var(sep);
- if (pdf_is_array(nameobj))
- n = pdf_array_len(nameobj);
+ if (pdf_is_array(ctx, nameobj))
+ n = pdf_array_len(ctx, nameobj);
else
n = 1;
if (n > FZ_MAX_COLORS)
fz_throw(ctx, FZ_ERROR_GENERIC, "too many components in colorspace");
- base = pdf_load_colorspace(doc, baseobj);
+ base = pdf_load_colorspace(ctx, doc, baseobj);
fz_try(ctx)
{
- tint = pdf_load_function(doc, tintobj, n, base->n);
+ tint = pdf_load_function(ctx, doc, tintobj, n, base->n);
/* RJW: fz_drop_colorspace(ctx, base);
- * "cannot load tint function (%d %d R)", pdf_to_num(tintobj), pdf_to_gen(tintobj) */
+ * "cannot load tint function (%d %d R)", pdf_to_num(ctx, tintobj), pdf_to_gen(ctx, tintobj) */
sep = fz_malloc_struct(ctx, struct separation);
sep->base = base;
@@ -153,7 +151,7 @@ load_separation(pdf_document *doc, pdf_obj *array)
cs->to_rgb = separation_to_rgb;
cs->free_data = free_separation;
cs->data = sep;
- cs->size += sizeof(struct separation) + (base ? base->size : 0) + fz_function_size(tint);
+ cs->size += sizeof(struct separation) + (base ? base->size : 0) + fz_function_size(ctx, tint);
}
fz_catch(ctx)
{
@@ -167,7 +165,7 @@ load_separation(pdf_document *doc, pdf_obj *array)
}
int
-pdf_is_tint_colorspace(fz_colorspace *cs)
+pdf_is_tint_colorspace(fz_context *ctx, fz_colorspace *cs)
{
return cs && cs->to_rgb == separation_to_rgb;
}
@@ -175,12 +173,11 @@ pdf_is_tint_colorspace(fz_colorspace *cs)
/* Indexed */
static fz_colorspace *
-load_indexed(pdf_document *doc, pdf_obj *array)
+load_indexed(fz_context *ctx, pdf_document *doc, pdf_obj *array)
{
- fz_context *ctx = doc->ctx;
- pdf_obj *baseobj = pdf_array_get(array, 1);
- pdf_obj *highobj = pdf_array_get(array, 2);
- pdf_obj *lookupobj = pdf_array_get(array, 3);
+ pdf_obj *baseobj = pdf_array_get(ctx, array, 1);
+ pdf_obj *highobj = pdf_array_get(ctx, array, 2);
+ pdf_obj *lookupobj = pdf_array_get(ctx, array, 3);
fz_colorspace *base = NULL;
fz_colorspace *cs;
int i, n, high;
@@ -191,20 +188,20 @@ load_indexed(pdf_document *doc, pdf_obj *array)
fz_try(ctx)
{
- base = pdf_load_colorspace(doc, baseobj);
+ base = pdf_load_colorspace(ctx, doc, baseobj);
- high = pdf_to_int(highobj);
+ high = pdf_to_int(ctx, highobj);
high = fz_clampi(high, 0, 255);
n = base->n * (high + 1);
lookup = fz_malloc_array(ctx, 1, n);
- if (pdf_is_string(lookupobj) && pdf_to_str_len(lookupobj) >= n)
+ if (pdf_is_string(ctx, lookupobj) && pdf_to_str_len(ctx, lookupobj) >= n)
{
- unsigned char *buf = (unsigned char *) pdf_to_str_buf(lookupobj);
+ unsigned char *buf = (unsigned char *) pdf_to_str_buf(ctx, lookupobj);
for (i = 0; i < n; i++)
lookup[i] = buf[i];
}
- else if (pdf_is_indirect(lookupobj))
+ else if (pdf_is_indirect(ctx, lookupobj))
{
fz_stream *file = NULL;
@@ -212,18 +209,18 @@ load_indexed(pdf_document *doc, pdf_obj *array)
fz_try(ctx)
{
- file = pdf_open_stream(doc, pdf_to_num(lookupobj), pdf_to_gen(lookupobj));
- i = fz_read(file, lookup, n);
+ file = pdf_open_stream(ctx, doc, pdf_to_num(ctx, lookupobj), pdf_to_gen(ctx, lookupobj));
+ i = fz_read(ctx, file, lookup, n);
if (i < n)
memset(lookup+i, 0, n-i);
}
fz_always(ctx)
{
- fz_close(file);
+ fz_drop_stream(ctx, file);
}
fz_catch(ctx)
{
- fz_rethrow_message(ctx, "cannot open colorspace lookup table (%d 0 R)", pdf_to_num(lookupobj));
+ fz_rethrow_message(ctx, "cannot open colorspace lookup table (%d 0 R)", pdf_to_num(ctx, lookupobj));
}
}
else
@@ -246,16 +243,15 @@ load_indexed(pdf_document *doc, pdf_obj *array)
/* Parse and create colorspace from PDF object */
static fz_colorspace *
-pdf_load_colorspace_imp(pdf_document *doc, pdf_obj *obj)
+pdf_load_colorspace_imp(fz_context *ctx, pdf_document *doc, pdf_obj *obj)
{
- fz_context *ctx = doc->ctx;
- if (pdf_obj_marked(obj))
+ if (pdf_obj_marked(ctx, obj))
fz_throw(ctx, FZ_ERROR_GENERIC, "Recursion in colorspace definition");
- if (pdf_is_name(obj))
+ if (pdf_is_name(ctx, obj))
{
- const char *str = pdf_to_name(obj);
+ const char *str = pdf_to_name(ctx, obj);
if (!strcmp(str, "Pattern"))
return fz_device_gray(ctx);
else if (!strcmp(str, "G"))
@@ -271,15 +267,15 @@ pdf_load_colorspace_imp(pdf_document *doc, pdf_obj *obj)
else if (!strcmp(str, "DeviceCMYK"))
return fz_device_cmyk(ctx);
else
- fz_throw(ctx, FZ_ERROR_GENERIC, "unknown colorspace: %s", pdf_to_name(obj));
+ fz_throw(ctx, FZ_ERROR_GENERIC, "unknown colorspace: %s", pdf_to_name(ctx, obj));
}
- else if (pdf_is_array(obj))
+ else if (pdf_is_array(ctx, obj))
{
- pdf_obj *name = pdf_array_get(obj, 0);
- const char *str = pdf_to_name(name);
+ pdf_obj *name = pdf_array_get(ctx, obj, 0);
+ const char *str = pdf_to_name(ctx, name);
- if (pdf_is_name(name))
+ if (pdf_is_name(ctx, name))
{
/* load base colorspace instead */
if (!strcmp(str, "G"))
@@ -307,39 +303,39 @@ pdf_load_colorspace_imp(pdf_document *doc, pdf_obj *obj)
fz_colorspace *cs;
fz_try(ctx)
{
- pdf_mark_obj(obj);
+ pdf_mark_obj(ctx, obj);
if (!strcmp(str, "ICCBased"))
- cs = load_icc_based(doc, pdf_array_get(obj, 1));
+ cs = load_icc_based(ctx, doc, pdf_array_get(ctx, obj, 1));
else if (!strcmp(str, "Indexed"))
- cs = load_indexed(doc, obj);
+ cs = load_indexed(ctx, doc, obj);
else if (!strcmp(str, "I"))
- cs = load_indexed(doc, obj);
+ cs = load_indexed(ctx, doc, obj);
else if (!strcmp(str, "Separation"))
- cs = load_separation(doc, obj);
+ cs = load_separation(ctx, doc, obj);
else if (!strcmp(str, "DeviceN"))
- cs = load_separation(doc, obj);
+ cs = load_separation(ctx, doc, obj);
else if (!strcmp(str, "Pattern"))
{
pdf_obj *pobj;
- pobj = pdf_array_get(obj, 1);
+ pobj = pdf_array_get(ctx, obj, 1);
if (!pobj)
{
cs = fz_device_gray(ctx);
break;
}
- cs = pdf_load_colorspace(doc, pobj);
+ cs = pdf_load_colorspace(ctx, doc, pobj);
}
else
fz_throw(ctx, FZ_ERROR_GENERIC, "syntaxerror: unknown colorspace %s", str);
}
fz_always(ctx)
{
- pdf_unmark_obj(obj);
+ pdf_unmark_obj(ctx, obj);
}
fz_catch(ctx)
{
@@ -350,21 +346,20 @@ pdf_load_colorspace_imp(pdf_document *doc, pdf_obj *obj)
}
}
- fz_throw(doc->ctx, FZ_ERROR_GENERIC, "syntaxerror: could not parse color space (%d %d R)", pdf_to_num(obj), pdf_to_gen(obj));
+ fz_throw(ctx, FZ_ERROR_GENERIC, "syntaxerror: could not parse color space (%d %d R)", pdf_to_num(ctx, obj), pdf_to_gen(ctx, obj));
}
fz_colorspace *
-pdf_load_colorspace(pdf_document *doc, pdf_obj *obj)
+pdf_load_colorspace(fz_context *ctx, pdf_document *doc, pdf_obj *obj)
{
- fz_context *ctx = doc->ctx;
fz_colorspace *cs;
- if ((cs = pdf_find_item(ctx, fz_free_colorspace_imp, obj)) != NULL)
+ if ((cs = pdf_find_item(ctx, fz_drop_colorspace_imp, obj)) != NULL)
{
return cs;
}
- cs = pdf_load_colorspace_imp(doc, obj);
+ cs = pdf_load_colorspace_imp(ctx, doc, obj);
pdf_store_item(ctx, obj, cs, cs->size);
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-22 14:01:56 +0000