fdo-mirrors/cairo
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/cairo/cairo.git synced 2026-05-05 06:28:01 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

PS: Implement JPEG embedding

Browse source
This commit is contained in:
Adrian Johnson 2008-11-04 22:52:45 +10:30
parent 73bc278c7a
commit 30976635d7
1 changed files with 101 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

104
src/cairo-ps-surface.c
View file

@ -63,6 +63,7 @@
#include "cairo-meta-surface-private.h"
#include "cairo-output-stream-private.h"
#include "cairo-type3-glyph-surface-private.h"
#include "cairo-jpeg-info-private.h"
#include <stdio.h>
#include <ctype.h>
@ -2118,6 +2119,93 @@ bail1:
return status;
}
static cairo_status_t
_cairo_ps_surface_emit_jpeg_image (cairo_ps_surface_t *surface,
cairo_surface_t *source,
int width,
int height)
{
cairo_status_t status;
const unsigned char *mime_data;
unsigned int mime_data_length;
cairo_jpeg_info_t info;
cairo_surface_get_mime_data (&surface->base, CAIRO_MIME_TYPE_JPEG,
&mime_data, &mime_data_length);
if (mime_data == NULL) {
return CAIRO_INT_STATUS_UNSUPPORTED;
}
status = _cairo_jpeg_get_info (mime_data, mime_data_length, &info);
if (status)
return status;
if (info.num_components != 1 && info.num_components != 3)
return CAIRO_INT_STATUS_UNSUPPORTED;
if (surface->use_string_datasource) {
/* Emit the image data as a base85-encoded string which will
* be used as the data source for the image operator later. */
_cairo_output_stream_printf (surface->stream,
"/CairoImageData [\n");
status = _cairo_ps_surface_emit_base85_string (surface,
mime_data,
mime_data_length,
TRUE);
if (status)
return status;
_cairo_output_stream_printf (surface->stream,
"] def\n");
_cairo_output_stream_printf (surface->stream,
"/CairoImageDataIndex 0 def\n");
}
_cairo_output_stream_printf (surface->stream,
"/%s setcolorspace\n"
"8 dict dup begin\n"
" /ImageType 1 def\n"
" /Width %d def\n"
" /Height %d def\n"
" /BitsPerComponent %d def\n"
" /Decode [ 0 1 0 1 0 1 ] def\n",
info.num_components == 1 ? "DeviceGray" : "DeviceRGB",
info.width,
info.height,
info.bits_per_component);
if (surface->use_string_datasource) {
_cairo_output_stream_printf (surface->stream,
" /DataSource {\n"
" CairoImageData CairoImageDataIndex get\n"
" /CairoImageDataIndex CairoImageDataIndex 1 add def\n"
" CairoImageDataIndex CairoImageData length 1 sub gt\n"
" { /CairoImageDataIndex 0 def } if\n"
" } /ASCII85Decode filter /DCTDecode filter def\n");
} else {
_cairo_output_stream_printf (surface->stream,
" /DataSource currentfile /ASCII85Decode filter /DCTDecode filter def\n");
}
_cairo_output_stream_printf (surface->stream,
" /ImageMatrix [ 1 0 0 -1 0 %d ] def\n"
"end\n"
"image\n",
info.height);
if (!surface->use_string_datasource) {
/* Emit the image data as a base85-encoded string which will
* be used as the data source for the image operator. */
status = _cairo_ps_surface_emit_base85_string (surface,
mime_data,
mime_data_length,
FALSE);
}
return status;
}
static cairo_status_t
_cairo_ps_surface_emit_meta_surface (cairo_ps_surface_t *surface,
cairo_surface_t *meta_surface)
@ -2316,7 +2404,9 @@ BAIL:
static cairo_status_t
_cairo_ps_surface_emit_surface (cairo_ps_surface_t *surface,
cairo_surface_pattern_t *pattern,
cairo_operator_t op)
cairo_operator_t op,
int width,
int height)
{
cairo_status_t status;
@ -2326,6 +2416,13 @@ _cairo_ps_surface_emit_surface (cairo_ps_surface_t *surface,
status = _cairo_ps_surface_emit_meta_surface (surface,
meta_surface);
} else {
if (cairo_pattern_get_extend (&pattern->base) != CAIRO_EXTEND_PAD) {
status = _cairo_ps_surface_emit_jpeg_image (surface, pattern->surface,
width, height);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
}
status = _cairo_ps_surface_emit_image (surface, surface->image,
op, pattern->base.filter);
}
@ -2404,7 +2501,7 @@ _cairo_ps_surface_paint_surface (cairo_ps_surface_t *surface,
ps_p2d.x0, ps_p2d.y0);
}
status = _cairo_ps_surface_emit_surface (surface, pattern, op);
status = _cairo_ps_surface_emit_surface (surface, pattern, op, width, height);
_cairo_ps_surface_release_surface (surface, pattern);
return status;
@ -2502,7 +2599,8 @@ _cairo_ps_surface_emit_surface_pattern (cairo_ps_surface_t *surface,
surface->content == CAIRO_CONTENT_COLOR ? 0 : 1,
xstep, ystep);
}
status = _cairo_ps_surface_emit_surface (surface, pattern, op);
status = _cairo_ps_surface_emit_surface (surface, pattern, op,
pattern_width, pattern_height);
if (status)
return status;