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pdf: add support for object streams for PDF >= 1.5

Browse source 
This allows all objects that were previously emitted uncompressed to
be compressed into a an object stream.

Currently only /Page, /Pages, and /Catalog have been converted to use
object streams.
This commit is contained in:
Adrian Johnson 2021-07-18 07:16:22 +09:30
parent 0f382eb087
commit bd514f6b08
4 changed files with 344 additions and 68 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
src/cairo-array-private.h
View file

@ -85,6 +85,9 @@ _cairo_array_num_elements (const cairo_array_t *array);
cairo_private unsigned int
_cairo_array_size (const cairo_array_t *array);
cairo_private void
_cairo_array_sort (const cairo_array_t *array, int (*compar)(const void *, const void *));
CAIRO_END_DECLS
#endif /* CAIRO_ARRAY_PRIVATE_H */

6
src/cairo-array.c
View file

@ -532,3 +532,9 @@ _cairo_user_data_array_foreach (cairo_user_data_array_t *array,
func (slots[i].key, slots[i].user_data, closure);
}
}
void
_cairo_array_sort (const cairo_array_t *array, int (*compar)(const void *, const void *))
{
qsort (array->elements, array->num_elements, array->element_size, compar);
}

15
src/cairo-pdf-surface-private.h
View file

@ -55,6 +55,7 @@ typedef struct _cairo_pdf_resource {
unsigned int id;
} cairo_pdf_resource_t;
#define CAIRO_NUM_OPERATORS (CAIRO_OPERATOR_HSL_LUMINOSITY + 1)
typedef struct _cairo_pdf_group_resources {
@ -315,6 +316,13 @@ struct _cairo_pdf_surface {
cairo_bool_t is_knockout;
} group_stream;
struct {
cairo_bool_t active;
cairo_output_stream_t *stream;
cairo_pdf_resource_t resource;
cairo_array_t objects;
} object_stream;
cairo_surface_clipper_t clipper;
cairo_pdf_operators_t pdf_operators;
@ -377,6 +385,13 @@ _cairo_pdf_interchange_tag_begin (cairo_pdf_surface_t *surface,
const char *name,
const char *attributes);
cairo_private cairo_int_status_t
_cairo_pdf_surface_object_begin (cairo_pdf_surface_t *surface,
cairo_pdf_resource_t resource);
cairo_private void
_cairo_pdf_surface_object_end (cairo_pdf_surface_t *surface);
cairo_private cairo_int_status_t
_cairo_pdf_interchange_tag_end (cairo_pdf_surface_t *surface,
const char *name);

388
src/cairo-pdf-surface.c
View file

@ -81,6 +81,7 @@
* - PDF Stream
* - Content Stream
* - Group Stream
* - Object stream
*
* Calling _cairo_output_stream_printf (surface->output, ...) will
* write to the currently open stream.
@ -110,6 +111,16 @@
* memory until it is closed. This allows some optimization such as
* including the Resource dictionary and stream length inside the
* XObject instead of using an indirect object.
*
* Object Stream (PDF 1.5)
* An Object Stream may be opened and closed with the following functions:
* _cairo_pdf_surface_open_object_stream ()
* _cairo_pdf_surface_close_object_stream ()
*
* An Object Stream contains one or more objects compressed into a stream.
* Only non stream objects are permitted. When emitting objects intended for
* the Object Stream, enclose the emit object operation with
* _cairo_pdf_surface_object_begin()/_cairo_pdf_surface_object_end().
*/
/**
@ -222,10 +233,29 @@ static const char *_cairo_pdf_supported_mime_types[] =
NULL
};
/* PDF cross-reference stream types */
typedef enum {
PDF_OBJECT_FREE = 0,
PDF_OBJECT_UNCOMPRESSED = 1,
PDF_OBJECT_COMPRESSED = 2,
} cairo_pdf_object_type_t;
typedef struct _cairo_pdf_object {
long offset;
cairo_pdf_object_type_t type;
union {
long offset; /* type == PDF_OBJECT_UNCOMPRESSED */
struct compressed_obj { /* type == PDF_OBJECT_COMPRESSED */
cairo_pdf_resource_t xref_stream;
int index;
} compressed_obj;
} u;
} cairo_pdf_object_t;
typedef struct _cairo_xref_stream_object {
cairo_pdf_resource_t resource;
long offset;
} cairo_xref_stream_object_t;
typedef struct _cairo_pdf_font {
unsigned int font_id;
unsigned int subset_id;
@ -276,11 +306,12 @@ _cairo_pdf_surface_emit_surface (cairo_pdf_surface_t *surface,
static cairo_int_status_t
_cairo_pdf_surface_write_page (cairo_pdf_surface_t *surface);
static void
static cairo_int_status_t
_cairo_pdf_surface_write_pages (cairo_pdf_surface_t *surface);
static cairo_pdf_resource_t
_cairo_pdf_surface_write_catalog (cairo_pdf_surface_t *surface);
static cairo_int_status_t
_cairo_pdf_surface_write_catalog (cairo_pdf_surface_t *surface,
cairo_pdf_resource_t catalog);
static long
_cairo_pdf_surface_write_xref (cairo_pdf_surface_t *surface);
@ -296,9 +327,6 @@ static cairo_int_status_t
_cairo_pdf_surface_write_patterns_and_smask_groups (cairo_pdf_surface_t *surface,
cairo_bool_t finish);
static cairo_int_status_t
_cairo_pdf_surface_write_page (cairo_pdf_surface_t *surface);
static cairo_int_status_t
_cairo_pdf_surface_emit_font_subsets (cairo_pdf_surface_t *surface);
@ -315,7 +343,11 @@ _cairo_pdf_surface_new_object (cairo_pdf_surface_t *surface)
cairo_int_status_t status;
cairo_pdf_object_t object;
object.offset = _cairo_output_stream_get_position (surface->output);
/* Default to Uncompressed. If this object is used with
* _cairo_pdf_surface_object_begin() and Object Streams are
* enabled it will be changed to Compressed. */
object.type = PDF_OBJECT_UNCOMPRESSED;
object.u.offset = _cairo_output_stream_get_position (surface->output);
status = _cairo_array_append (&surface->objects, &object);
if (unlikely (status)) {
@ -336,7 +368,7 @@ _cairo_pdf_surface_update_object (cairo_pdf_surface_t *surface,
cairo_pdf_object_t *object;
object = _cairo_array_index (&surface->objects, resource.id - 1);
object->offset = _cairo_output_stream_get_position (surface->output);
object->u.offset = _cairo_output_stream_get_position (surface->output);
}
static void
@ -472,6 +504,9 @@ _cairo_pdf_surface_create_for_stream_internal (cairo_output_stream_t *output,
surface->group_stream.active = FALSE;
surface->group_stream.stream = NULL;
surface->group_stream.mem_stream = NULL;
surface->object_stream.active = FALSE;
surface->object_stream.stream = NULL;
_cairo_array_init (&surface->object_stream.objects, sizeof (cairo_xref_stream_object_t));
surface->paginated_mode = CAIRO_PAGINATED_MODE_ANALYZE;
@ -2093,6 +2128,181 @@ _cairo_pdf_surface_close_group (cairo_pdf_surface_t *surface,
return status;
}
static cairo_int_status_t
_cairo_pdf_surface_open_object_stream (cairo_pdf_surface_t *surface)
{
if (surface->pdf_version < CAIRO_PDF_VERSION_1_5) {
/* Object streams not supported. All objects will be written
* directly to the file. */
assert (surface->pdf_stream.active == FALSE);
assert (surface->group_stream.active == FALSE);
surface->object_stream.stream = surface->output;
} else {
surface->object_stream.resource = _cairo_pdf_surface_new_object (surface);
if (surface->object_stream.resource.id == 0)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
_cairo_array_truncate (&surface->object_stream.objects, 0);
surface->object_stream.stream = _cairo_memory_stream_create ();
surface->object_stream.active = TRUE;
}
return _cairo_output_stream_get_status (surface->object_stream.stream);
}
cairo_int_status_t
_cairo_pdf_surface_object_begin (cairo_pdf_surface_t *surface,
cairo_pdf_resource_t resource)
{
cairo_xref_stream_object_t xref_obj;
cairo_pdf_object_t *object;
cairo_int_status_t status;
if (surface->object_stream.active) {
xref_obj.resource = resource;
xref_obj.offset = _cairo_output_stream_get_position (surface->object_stream.stream);
status = _cairo_array_append (&surface->object_stream.objects, &xref_obj);
if (unlikely (status))
return status;
object = _cairo_array_index (&surface->objects, resource.id - 1);
object->type = PDF_OBJECT_COMPRESSED;
object->u.compressed_obj.xref_stream = surface->object_stream.resource;
object->u.compressed_obj.index = _cairo_array_num_elements (&surface->object_stream.objects) - 1;
} else {
_cairo_output_stream_printf (surface->output,
"%d 0 obj\n",
resource.id);
}
return CAIRO_INT_STATUS_SUCCESS;
}
void
_cairo_pdf_surface_object_end (cairo_pdf_surface_t *surface)
{
if (!surface->object_stream.active) {
_cairo_output_stream_printf (surface->output,
"endobj\n");
}
}
static int _cairo_xref_stream_object_compare (const void *a, const void *b)
{
const cairo_xref_stream_object_t *a_obj = a;
const cairo_xref_stream_object_t *b_obj = b;
if (a_obj->offset < b_obj->offset)
return -1;
else if (a_obj->offset > b_obj->offset)
return 1;
else
return 0;
}
static cairo_int_status_t
_cairo_pdf_surface_close_object_stream (cairo_pdf_surface_t *surface)
{
int i, num_objects;
cairo_xref_stream_object_t *xref_obj;
long start_pos, length;
cairo_output_stream_t *index_stream;
cairo_output_stream_t *deflate_stream;
cairo_pdf_resource_t length_res;
cairo_int_status_t status;
cairo_pdf_object_t *object;
if (!surface->object_stream.active) {
surface->object_stream.stream = NULL;
return CAIRO_INT_STATUS_SUCCESS;
}
num_objects = _cairo_array_num_elements (&surface->object_stream.objects);
if (num_objects == 0) {
object = _cairo_array_index (&surface->objects, surface->object_stream.resource.id - 1);
object->type = PDF_OBJECT_FREE;
return CAIRO_INT_STATUS_SUCCESS;
}
index_stream = _cairo_memory_stream_create ();
/* PDF requires the object id/offset pairs to be sorted by offset. */
_cairo_array_sort (&surface->object_stream.objects, _cairo_xref_stream_object_compare);
for (i = 0; i < num_objects; i++) {
xref_obj = _cairo_array_index (&surface->object_stream.objects, i);
_cairo_output_stream_printf (index_stream,
"%d %ld\n",
xref_obj->resource.id,
xref_obj->offset);
}
length_res = _cairo_pdf_surface_new_object (surface);
if (length_res.id == 0)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
_cairo_pdf_surface_update_object (surface, surface->object_stream.resource);
_cairo_output_stream_printf (surface->output,
"%d 0 obj\n"
"<< /Type /ObjStm\n"
" /Length %d 0 R\n"
" /N %d\n"
" /First %d\n",
surface->object_stream.resource.id,
length_res.id,
num_objects,
_cairo_memory_stream_length (index_stream));
if (surface->compress_streams) {
_cairo_output_stream_printf (surface->output,
" /Filter /FlateDecode\n");
}
_cairo_output_stream_printf (surface->output,
">>\n"
"stream\n");
start_pos = _cairo_output_stream_get_position (surface->output);
if (surface->compress_streams) {
deflate_stream = _cairo_deflate_stream_create (surface->output);
_cairo_memory_stream_copy (index_stream, deflate_stream);
_cairo_memory_stream_copy (surface->object_stream.stream, deflate_stream);
status = _cairo_output_stream_destroy (deflate_stream);
if (unlikely (status))
return status;
length = _cairo_output_stream_get_position (surface->output) - start_pos;
} else {
_cairo_memory_stream_copy (index_stream, surface->output);
_cairo_memory_stream_copy (surface->object_stream.stream, surface->output);
length = _cairo_output_stream_get_position (surface->output) - start_pos;
}
_cairo_output_stream_printf (surface->output,
"\n"
"endstream\n"
"endobj\n");
_cairo_pdf_surface_update_object (surface,
length_res);
_cairo_output_stream_printf (surface->output,
"%d 0 obj\n"
" %ld\n"
"endobj\n",
length_res.id,
length);
status = _cairo_output_stream_destroy (index_stream);
if (unlikely (status))
return status;
status = _cairo_output_stream_destroy (surface->object_stream.stream);
if (unlikely (status))
return status;
surface->object_stream.stream = NULL;
surface->object_stream.active = FALSE;
return _cairo_output_stream_get_status (surface->output);
}
static cairo_int_status_t
_cairo_pdf_surface_open_content_stream (cairo_pdf_surface_t *surface,
const cairo_box_double_t *bbox,
@ -2223,6 +2433,10 @@ _cairo_pdf_surface_finish (void *abstract_surface)
_cairo_pdf_surface_clear (surface);
status = _cairo_pdf_surface_open_object_stream (surface);
if (unlikely (status))
return status;
/* Emit unbounded surfaces */
_cairo_pdf_surface_write_patterns_and_smask_groups (surface, TRUE);
@ -2230,15 +2444,25 @@ _cairo_pdf_surface_finish (void *abstract_surface)
if (status == CAIRO_STATUS_SUCCESS)
status = _cairo_pdf_surface_emit_font_subsets (surface);
_cairo_pdf_surface_write_pages (surface);
status = _cairo_pdf_surface_write_pages (surface);
if (unlikely (status))
return status;
status = _cairo_pdf_interchange_write_document_objects (surface);
if (unlikely (status))
return status;
catalog = _cairo_pdf_surface_write_catalog (surface);
if (catalog.id == 0 && status == CAIRO_STATUS_SUCCESS)
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
catalog = _cairo_pdf_surface_new_object (surface);
if (catalog.id == 0)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
status = _cairo_pdf_surface_write_catalog (surface, catalog);
if (unlikely (status))
return status;
status = _cairo_pdf_surface_close_object_stream (surface);
if (unlikely (status))
return status;
if (surface->pdf_version >= CAIRO_PDF_VERSION_1_5)
{
@ -2306,6 +2530,7 @@ _cairo_pdf_surface_finish (void *abstract_surface)
_cairo_array_fini (&surface->alpha_linear_functions);
_cairo_array_fini (&surface->page_patterns);
_cairo_array_fini (&surface->page_surfaces);
_cairo_array_fini (&surface->object_stream.objects);
size = _cairo_array_num_elements (&surface->doc_surfaces);
for (i = 0; i < size; i++) {
@ -5141,34 +5366,38 @@ _cairo_pdf_surface_get_font_options (void *abstract_surface,
_cairo_font_options_set_round_glyph_positions (options, CAIRO_ROUND_GLYPH_POS_OFF);
}
static void
static cairo_int_status_t
_cairo_pdf_surface_write_pages (cairo_pdf_surface_t *surface)
{
cairo_pdf_resource_t page;
int num_pages, i;
cairo_int_status_t status;
_cairo_pdf_surface_update_object (surface, surface->pages_resource);
_cairo_output_stream_printf (surface->output,
"%d 0 obj\n"
status = _cairo_pdf_surface_object_begin (surface, surface->pages_resource);
if (unlikely (status))
return status;
_cairo_output_stream_printf (surface->object_stream.stream,
"<< /Type /Pages\n"
" /Kids [ ",
surface->pages_resource.id);
" /Kids [ ");
num_pages = _cairo_array_num_elements (&surface->pages);
for (i = 0; i < num_pages; i++) {
_cairo_array_copy_element (&surface->pages, i, &page);
_cairo_output_stream_printf (surface->output, "%d 0 R ", page.id);
_cairo_output_stream_printf (surface->object_stream.stream, "%d 0 R ", page.id);
}
_cairo_output_stream_printf (surface->output, "]\n");
_cairo_output_stream_printf (surface->output, " /Count %d\n", num_pages);
_cairo_output_stream_printf (surface->object_stream.stream, "]\n");
_cairo_output_stream_printf (surface->object_stream.stream, " /Count %d\n", num_pages);
/* TODO: Figure out which other defaults to be inherited by /Page
* objects. */
_cairo_output_stream_printf (surface->output,
">>\n"
"endobj\n");
_cairo_output_stream_printf (surface->object_stream.stream,
">>\n");
_cairo_pdf_surface_object_end (surface);
return CAIRO_INT_STATUS_SUCCESS;
}
cairo_int_status_t
@ -6452,55 +6681,54 @@ BAIL:
return status;
}
static cairo_pdf_resource_t
_cairo_pdf_surface_write_catalog (cairo_pdf_surface_t *surface)
static cairo_int_status_t
_cairo_pdf_surface_write_catalog (cairo_pdf_surface_t *surface,
cairo_pdf_resource_t catalog)
{
cairo_pdf_resource_t catalog;
cairo_status_t status;
catalog = _cairo_pdf_surface_new_object (surface);
if (catalog.id == 0)
return catalog;
status = _cairo_pdf_surface_object_begin (surface, catalog);
if (unlikely (status))
return status;
_cairo_output_stream_printf (surface->output,
"%d 0 obj\n"
_cairo_output_stream_printf (surface->object_stream.stream,
"<< /Type /Catalog\n"
" /Pages %d 0 R\n",
catalog.id,
surface->pages_resource.id);
if (surface->struct_tree_root.id != 0) {
_cairo_output_stream_printf (surface->output,
_cairo_output_stream_printf (surface->object_stream.stream,
" /StructTreeRoot %d 0 R\n",
surface->struct_tree_root.id);
if (surface->tagged) {
_cairo_output_stream_printf (surface->output,
_cairo_output_stream_printf (surface->object_stream.stream,
" /MarkInfo << /Marked true >>\n");
}
}
if (surface->outlines_dict_res.id != 0) {
_cairo_output_stream_printf (surface->output,
_cairo_output_stream_printf (surface->object_stream.stream,
" /Outlines %d 0 R\n",
surface->outlines_dict_res.id);
}
if (surface->page_labels_res.id != 0) {
_cairo_output_stream_printf (surface->output,
_cairo_output_stream_printf (surface->object_stream.stream,
" /PageLabels %d 0 R\n",
surface->page_labels_res.id);
}
if (surface->names_dict_res.id != 0) {
_cairo_output_stream_printf (surface->output,
_cairo_output_stream_printf (surface->object_stream.stream,
" /Names %d 0 R\n",
surface->names_dict_res.id);
}
_cairo_output_stream_printf (surface->output,
">>\n"
"endobj\n");
_cairo_output_stream_printf (surface->object_stream.stream,
">>\n");
_cairo_pdf_surface_object_end (surface);
return catalog;
return status;
}
static long
@ -6523,7 +6751,7 @@ _cairo_pdf_surface_write_xref (cairo_pdf_surface_t *surface)
"0000000000 65535 f \n");
for (i = 0; i < num_objects; i++) {
object = _cairo_array_index (&surface->objects, i);
snprintf (buffer, sizeof buffer, "%010ld", object->offset);
snprintf (buffer, sizeof buffer, "%010ld", object->u.offset);
_cairo_output_stream_printf (surface->output,
"%s 00000 n \n", buffer);
}
@ -6570,7 +6798,7 @@ _cairo_write_xref_stream_entrys (cairo_pdf_surface_t *surface,
/* PDF requires this to be first entry */
_cairo_write_xref_stream_entry (stream,
0,
0, /* type 0 == free */
PDF_OBJECT_FREE,
field2_size,
0, /* next free object number */
0xffff, /* next generation number */
@ -6579,13 +6807,31 @@ _cairo_write_xref_stream_entrys (cairo_pdf_surface_t *surface,
num_objects = _cairo_array_num_elements (&surface->objects);
for (i = 0; i < num_objects; i++) {
object = _cairo_array_index (&surface->objects, i);
_cairo_write_xref_stream_entry (stream,
i + 1,
1, /* type 1 == in use, not in obj stream */
field2_size,
object->offset,
0, /* generation number */
write_as_comments);
if (object->type == PDF_OBJECT_UNCOMPRESSED) {
_cairo_write_xref_stream_entry (stream,
i + 1,
object->type,
field2_size,
object->u.offset,
0, /* generation number */
write_as_comments);
} else if (object->type == PDF_OBJECT_COMPRESSED) {
_cairo_write_xref_stream_entry (stream,
i + 1,
object->type,
field2_size,
object->u.compressed_obj.xref_stream.id,
object->u.compressed_obj.index,
write_as_comments);
} else {
_cairo_write_xref_stream_entry (stream,
i + 1,
PDF_OBJECT_FREE,
field2_size,
0,
0xffff,
write_as_comments);
}
}
}
@ -6614,7 +6860,6 @@ _cairo_pdf_surface_write_xref_stream (cairo_pdf_surface_t *surface,
mem_stream = _cairo_memory_stream_create ();
xref_stream = _cairo_deflate_stream_create (mem_stream);
_cairo_write_xref_stream_entrys (surface, xref_stream, offset_bytes, FALSE);
status = _cairo_output_stream_destroy (xref_stream);
@ -6647,7 +6892,7 @@ _cairo_pdf_surface_write_xref_stream (cairo_pdf_surface_t *surface,
* a human readable format of the xref stream as PDF comments.
*/
_cairo_output_stream_printf (surface->output,
"%% id type offset gen\n");
"%% id type offset/obj gen/index\n");
_cairo_write_xref_stream_entrys (surface, surface->output, offset_bytes, TRUE);
}
@ -6659,7 +6904,8 @@ _cairo_pdf_surface_write_xref_stream (cairo_pdf_surface_t *surface,
return status;
_cairo_output_stream_printf (surface->output,
"\nendstream\n"
"\n"
"endstream\n"
"endobj\n");
return _cairo_output_stream_get_status (surface->output);
@ -7018,6 +7264,10 @@ _cairo_pdf_surface_write_page (cairo_pdf_surface_t *surface)
cairo_int_status_t status;
unsigned int i, len, page_num, num_annots;
status = _cairo_pdf_surface_open_object_stream (surface);
if (unlikely (status))
return status;
status = _cairo_pdf_interchange_write_page_objects (surface);
if (unlikely (status))
return status;
@ -7086,9 +7336,12 @@ _cairo_pdf_surface_write_page (cairo_pdf_surface_t *surface)
page_num = _cairo_array_num_elements (&surface->pages);
page = _cairo_array_index (&surface->pages, page_num - 1);
_cairo_pdf_surface_update_object (surface, *page);
_cairo_output_stream_printf (surface->output,
"%d 0 obj\n"
status = _cairo_pdf_surface_object_begin (surface, *page);
if (unlikely (status))
return status;
_cairo_output_stream_printf (surface->object_stream.stream,
"<< /Type /Page %% %d\n"
" /Parent %d 0 R\n"
" /MediaBox [ 0 0 %f %f ]\n"
@ -7100,7 +7353,6 @@ _cairo_pdf_surface_write_page (cairo_pdf_surface_t *surface)
" /CS /DeviceRGB\n"
" >>\n"
" /Resources %d 0 R\n",
page->id,
page_num,
surface->pages_resource.id,
surface->width,
@ -7109,39 +7361,39 @@ _cairo_pdf_surface_write_page (cairo_pdf_surface_t *surface)
surface->content_resources.id);
if (surface->page_parent_tree >= 0) {
_cairo_output_stream_printf (surface->output,
_cairo_output_stream_printf (surface->object_stream.stream,
" /StructParents %d\n",
surface->page_parent_tree);
}
num_annots = _cairo_array_num_elements (&surface->page_annots);
if (num_annots > 0) {
_cairo_output_stream_printf (surface->output,
_cairo_output_stream_printf (surface->object_stream.stream,
" /Annots [ ");
for (i = 0; i < num_annots; i++) {
_cairo_array_copy_element (&surface->page_annots, i, &res);
_cairo_output_stream_printf (surface->output,
_cairo_output_stream_printf (surface->object_stream.stream,
"%d 0 R ",
res.id);
}
_cairo_output_stream_printf (surface->output, "]\n");
_cairo_output_stream_printf (surface->object_stream.stream, "]\n");
}
if (thumbnail_res.id) {
_cairo_output_stream_printf (surface->output,
_cairo_output_stream_printf (surface->object_stream.stream,
" /Thumb %d 0 R\n",
thumbnail_res.id);
}
_cairo_output_stream_printf (surface->output,
">>\n"
"endobj\n");
_cairo_output_stream_printf (surface->object_stream.stream,
">>\n");
_cairo_pdf_surface_object_end (surface);
status = _cairo_pdf_surface_write_patterns_and_smask_groups (surface, FALSE);
if (unlikely (status))
return status;
return CAIRO_STATUS_SUCCESS;
return _cairo_pdf_surface_close_object_stream (surface);
}
static cairo_int_status_t