pdf: support JBIG2 mime data

JBIG2 images may have shared global data that is stored in a separate
stream in PDF. The CAIRO_MIME_TYPE_JBIG2 mime type is for the JBIG2
data for each image. All images that use global data must also set
CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID to a unique identifier. One of the
images must also set CAIRO_MIME_TYPE_JBIG2_GLOBAL to the global
data. The global data will be shared by all JBIG2 images with the same
CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID.

12 files changed, 952 insertions, 2 deletions

diff --git a/src/cairo-device.c b/src/cairo-device.c
index 098f856..585a9c1 100644
--- a/src/cairo-device.c
+++ b/src/cairo-device.c
@@ -158,6 +158,7 @@ _cairo_device_create_in_error (cairo_status_t status)
     case CAIRO_STATUS_INVALID_CONTENT:
     case CAIRO_STATUS_INVALID_MESH_CONSTRUCTION:
     case CAIRO_STATUS_DEVICE_FINISHED:
+    case CAIRO_STATUS_JBIG2_GLOBAL_MISSING:
     default:
 	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
 	return (cairo_device_t *) &_nil_device;
diff --git a/src/cairo-error-private.h b/src/cairo-error-private.h
index ea9c2ea..2d170ef 100644
--- a/src/cairo-error-private.h
+++ b/src/cairo-error-private.h
@@ -90,6 +90,7 @@ enum _cairo_int_status {
     CAIRO_INT_STATUS_DEVICE_ERROR,
     CAIRO_INT_STATUS_INVALID_MESH_CONSTRUCTION,
     CAIRO_INT_STATUS_DEVICE_FINISHED,
+    CAIRO_INT_STATUS_JBIG2_GLOBAL_MISSING,
 
     CAIRO_INT_STATUS_LAST_STATUS,
 
diff --git a/src/cairo-image-info-private.h b/src/cairo-image-info-private.h
index 0d9ef84..e64928e 100644
--- a/src/cairo-image-info-private.h
+++ b/src/cairo-image-info-private.h
@@ -0,0 +1,68 @@
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#ifndef CAIRO_IMAGE_INFO_PRIVATE_H
+#define CAIRO_IMAGE_INFO_PRIVATE_H
+
+#include "cairoint.h"
+
+typedef struct _cairo_image_info {
+    int		 width;
+    int		 height;
+    int		 num_components;
+    int		 bits_per_component;
+} cairo_image_info_t;
+
+cairo_private cairo_int_status_t
+_cairo_image_info_get_jpeg_info (cairo_image_info_t	*info,
+				 const unsigned char	*data,
+				 long			 length);
+
+cairo_private cairo_int_status_t
+_cairo_image_info_get_jpx_info (cairo_image_info_t	*info,
+				const unsigned char	*data,
+				unsigned long		 length);
+
+cairo_private cairo_int_status_t
+_cairo_image_info_get_png_info (cairo_image_info_t	*info,
+				const unsigned char     *data,
+				unsigned long            length);
+
+cairo_private cairo_int_status_t
+_cairo_image_info_get_jbig2_info (cairo_image_info_t	*info,
+				  const unsigned char	*data,
+				  unsigned long		 length);
+
+#endif /* CAIRO_IMAGE_INFO_PRIVATE_H */
diff --git a/src/cairo-image-info.c b/src/cairo-image-info.c
index 4489698..64053a2 100644
--- a/src/cairo-image-info.c
+++ b/src/cairo-image-info.c
@@ -0,0 +1,427 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2008 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#include "cairoint.h"
+
+#include "cairo-error-private.h"
+#include "cairo-image-info-private.h"
+
+static uint32_t
+_get_be32 (const unsigned char *p)
+{
+    return p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
+}
+
+/* JPEG (image/jpeg)
+ *
+ * http://www.w3.org/Graphics/JPEG/itu-t81.pdf
+ */
+
+/* Markers with no parameters. All other markers are followed by a two
+ * byte length of the parameters. */
+#define TEM       0x01
+#define RST_begin 0xd0
+#define RST_end   0xd7
+#define SOI       0xd8
+#define EOI       0xd9
+
+/* Start of frame markers. */
+#define SOF0  0xc0
+#define SOF1  0xc1
+#define SOF2  0xc2
+#define SOF3  0xc3
+#define SOF5  0xc5
+#define SOF6  0xc6
+#define SOF7  0xc7
+#define SOF9  0xc9
+#define SOF10 0xca
+#define SOF11 0xcb
+#define SOF13 0xcd
+#define SOF14 0xce
+#define SOF15 0xcf
+
+static const unsigned char *
+_jpeg_skip_segment (const unsigned char *p)
+{
+    int len;
+
+    p++;
+    len = (p[0] << 8) | p[1];
+
+    return p + len;
+}
+
+static void
+_jpeg_extract_info (cairo_image_info_t *info, const unsigned char *p)
+{
+    info->width = (p[6] << 8) + p[7];
+    info->height = (p[4] << 8) + p[5];
+    info->num_components = p[8];
+    info->bits_per_component = p[3];
+}
+
+cairo_int_status_t
+_cairo_image_info_get_jpeg_info (cairo_image_info_t	*info,
+				 const unsigned char	*data,
+				 long			 length)
+{
+    const unsigned char *p = data;
+
+    while (p + 1 < data + length) {
+	if (*p != 0xff)
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+	p++;
+
+	switch (*p) {
+	    /* skip fill bytes */
+	case 0xff:
+	    p++;
+	    break;
+
+	case TEM:
+	case SOI:
+	case EOI:
+	    p++;
+	    break;
+
+	case SOF0:
+	case SOF1:
+	case SOF2:
+	case SOF3:
+	case SOF5:
+	case SOF6:
+	case SOF7:
+	case SOF9:
+	case SOF10:
+	case SOF11:
+	case SOF13:
+	case SOF14:
+	case SOF15:
+	    /* Start of frame found. Extract the image parameters. */
+	    if (p + 8 > data + length)
+		return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	    _jpeg_extract_info (info, p);
+	    return CAIRO_STATUS_SUCCESS;
+
+	default:
+	    if (*p >= RST_begin && *p <= RST_end) {
+		p++;
+		break;
+	    }
+
+	    if (p + 2 > data + length)
+		return CAIRO_INT_STATUS_UNSUPPORTED;
+
+	    p = _jpeg_skip_segment (p);
+	    break;
+	}
+    }
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* JPEG 2000 (image/jp2)
+ *
+ * http://www.jpeg.org/public/15444-1annexi.pdf
+ */
+
+#define JPX_FILETYPE 0x66747970
+#define JPX_JP2_HEADER 0x6A703268
+#define JPX_IMAGE_HEADER 0x69686472
+
+static const unsigned char _jpx_signature[] = {
+    0x00, 0x00, 0x00, 0x0c, 0x6a, 0x50, 0x20, 0x20, 0x0d, 0x0a, 0x87, 0x0a
+};
+
+static const unsigned char *
+_jpx_next_box (const unsigned char *p)
+{
+    return p + _get_be32 (p);
+}
+
+static const unsigned char *
+_jpx_get_box_contents (const unsigned char *p)
+{
+    return p + 8;
+}
+
+static cairo_bool_t
+_jpx_match_box (const unsigned char *p, const unsigned char *end, uint32_t type)
+{
+    uint32_t length;
+
+    if (p + 8 < end) {
+	length = _get_be32 (p);
+	if (_get_be32 (p + 4) == type &&  p + length < end)
+	    return TRUE;
+    }
+
+    return FALSE;
+}
+
+static const unsigned char *
+_jpx_find_box (const unsigned char *p, const unsigned char *end, uint32_t type)
+{
+    while (p < end) {
+	if (_jpx_match_box (p, end, type))
+	    return p;
+	p = _jpx_next_box (p);
+    }
+
+    return NULL;
+}
+
+static void
+_jpx_extract_info (const unsigned char *p, cairo_image_info_t *info)
+{
+    info->height = _get_be32 (p);
+    info->width = _get_be32 (p + 4);
+    info->num_components = (p[8] << 8) + p[9];
+    info->bits_per_component = p[10];
+}
+
+cairo_int_status_t
+_cairo_image_info_get_jpx_info (cairo_image_info_t	*info,
+				const unsigned char	*data,
+				unsigned long		 length)
+{
+    const unsigned char *p = data;
+    const unsigned char *end = data + length;
+
+    /* First 12 bytes must be the JPEG 2000 signature box. */
+    if (length < ARRAY_LENGTH(_jpx_signature) ||
+	memcmp(p, _jpx_signature, ARRAY_LENGTH(_jpx_signature)) != 0)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    p += ARRAY_LENGTH(_jpx_signature);
+
+    /* Next box must be a File Type Box */
+    if (! _jpx_match_box (p, end, JPX_FILETYPE))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    p = _jpx_next_box (p);
+
+    /* Locate the JP2 header box. */
+    p = _jpx_find_box (p, end, JPX_JP2_HEADER);
+    if (!p)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Step into the JP2 header box. First box must be the Image
+     * Header */
+    p = _jpx_get_box_contents (p);
+    if (! _jpx_match_box (p, end, JPX_IMAGE_HEADER))
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    /* Get the image info */
+    p = _jpx_get_box_contents (p);
+    _jpx_extract_info (p, info);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+/* PNG (image/png)
+ *
+ * http://www.w3.org/TR/2003/REC-PNG-20031110/
+ */
+
+#define PNG_IHDR 0x49484452
+
+static const unsigned char _png_magic[8] = { 137, 80, 78, 71, 13, 10, 26, 10 };
+
+cairo_int_status_t
+_cairo_image_info_get_png_info (cairo_image_info_t     *info,
+                               const unsigned char     *data,
+                               unsigned long            length)
+{
+    const unsigned char *p = data;
+    const unsigned char *end = data + length;
+
+    if (length < 8 || memcmp (data, _png_magic, 8) != 0)
+       return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    p += 8;
+
+    /* The first chunk must be IDHR. IDHR has 13 bytes of data plus
+     * the 12 bytes of overhead for the chunk. */
+    if (p + 13 + 12 > end)
+       return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    p += 4;
+    if (_get_be32 (p) != PNG_IHDR)
+       return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    p += 4;
+    info->width = _get_be32 (p);
+    p += 4;
+    info->height = _get_be32 (p);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static const unsigned char *
+_jbig2_find_data_end (const unsigned char *p,
+		      const unsigned char *end,
+		      int                  type)
+{
+    unsigned char end_seq[2];
+    int mmr;
+
+    /* Segments of type "Immediate generic region" may have an
+     * unspecified data length.  The JBIG2 specification specifies the
+     * method to find the end of the data for these segments. */
+    if (type == 36 || type == 38 || type == 39) {
+	if (p + 18 < end) {
+	    mmr = p[17] & 0x01;
+	    if (mmr) {
+		/* MMR encoding ends with 0x00, 0x00 */
+		end_seq[0] = 0x00;
+		end_seq[1] = 0x00;
+	    } else {
+		/* Template encoding ends with 0xff, 0xac */
+		end_seq[0] = 0xff;
+		end_seq[1] = 0xac;
+	    }
+	    p += 18;
+	    while (p < end) {
+		if (p[0] == end_seq[0] && p[1] == end_seq[1]) {
+		    /* Skip the 2 terminating bytes and the 4 byte row count that follows. */
+		    p += 6;
+		    if (p < end)
+			return p;
+		}
+		p++;
+	    }
+	}
+    }
+
+    return NULL;
+}
+
+static const unsigned char *
+_jbig2_get_next_segment (const unsigned char  *p,
+			 const unsigned char  *end,
+			 int                  *type,
+			 const unsigned char **data,
+			 unsigned long        *data_len)
+{
+    unsigned long seg_num;
+    cairo_bool_t big_page_size;
+    int num_segs;
+    int ref_seg_bytes;
+    int referred_size;
+
+    if (p + 6 >= end)
+	return NULL;
+
+    seg_num = _get_be32 (p);
+    *type = p[4] & 0x3f;
+    big_page_size = (p[4] & 0x40) != 0;
+    p += 5;
+
+    num_segs = p[0] >> 5;
+    if (num_segs == 7) {
+	num_segs = _get_be32 (p) & 0x1fffffff;
+	ref_seg_bytes = 4 + ((num_segs + 1)/8);
+    } else {
+	ref_seg_bytes = 1;
+    }
+    p += ref_seg_bytes;
+
+    if (seg_num <= 256)
+	referred_size = 1;
+    else if (seg_num <= 65536)
+	referred_size = 2;
+    else
+	referred_size = 4;
+
+    p += num_segs * referred_size;
+    p += big_page_size ? 4 : 1;
+    if (p + 4 >= end)
+	return NULL;
+
+    *data_len = _get_be32 (p);
+    p += 4;
+    *data = p;
+
+    if (*data_len == 0xffffffff) {
+	/* if data length is -1 we have to scan through the data to find the end */
+	p = _jbig2_find_data_end (*data, end, *type);
+	if (!p || p >= end)
+	    return NULL;
+
+	*data_len = p - *data;
+    } else {
+	p += *data_len;
+    }
+
+    if (p < end)
+	return p;
+    else
+	return NULL;
+}
+
+static void
+_jbig2_extract_info (cairo_image_info_t *info, const unsigned char *p)
+{
+    info->width = _get_be32 (p);
+    info->height = _get_be32 (p + 4);
+    info->num_components = 1;
+    info->bits_per_component = 1;
+}
+
+cairo_int_status_t
+_cairo_image_info_get_jbig2_info (cairo_image_info_t	*info,
+				  const unsigned char	*data,
+				  unsigned long		 length)
+{
+    const unsigned char *p = data;
+    const unsigned char *end = data + length;
+    int seg_type;
+    const unsigned char *seg_data;
+    unsigned long seg_data_len;
+
+    while (p && p < end) {
+	p = _jbig2_get_next_segment (p, end, &seg_type, &seg_data, &seg_data_len);
+	if (p && seg_type == 48 && seg_data_len > 8) {
+	    /* page information segment */
+	    _jbig2_extract_info (info, seg_data);
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    return CAIRO_INT_STATUS_UNSUPPORTED;
+}
diff --git a/src/cairo-misc.c b/src/cairo-misc.c
index bb37e1a..7575d42 100644
--- a/src/cairo-misc.c
+++ b/src/cairo-misc.c
@@ -156,6 +156,8 @@ cairo_status_to_string (cairo_status_t status)
 	return "invalid operation during mesh pattern construction";
     case CAIRO_STATUS_DEVICE_FINISHED:
 	return "the target device has been finished";
+    case CAIRO_STATUS_JBIG2_GLOBAL_MISSING:
+	return "CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID used but no CAIRO_MIME_TYPE_JBIG2_GLOBAL data provided";
     default:
     case CAIRO_STATUS_LAST_STATUS:
 	return "<unknown error status>";
diff --git a/src/cairo-pdf-surface-private.h b/src/cairo-pdf-surface-private.h
index dfeb1aa..0032947 100644
--- a/src/cairo-pdf-surface-private.h
+++ b/src/cairo-pdf-surface-private.h
@@ -129,6 +129,13 @@ typedef struct _cairo_pdf_smask_group {
     cairo_scaled_font_t	 *scaled_font;
 } cairo_pdf_smask_group_t;
 
+typedef struct _cairo_pdf_jbig2_global {
+    unsigned char *id;
+    unsigned long id_length;
+    cairo_pdf_resource_t  res;
+    cairo_bool_t emitted;
+} cairo_pdf_jbig2_global_t;
+
 typedef struct _cairo_pdf_surface cairo_pdf_surface_t;
 
 struct _cairo_pdf_surface {
@@ -151,6 +158,7 @@ struct _cairo_pdf_surface {
     cairo_hash_table_t *all_surfaces;
     cairo_array_t smask_groups;
     cairo_array_t knockout_group;
+    cairo_array_t jbig2_global;
 
     cairo_scaled_font_subsets_t *font_subsets;
     cairo_array_t fonts;
diff --git a/src/cairo-pdf-surface.c b/src/cairo-pdf-surface.c
index 92c614d..4c9dd5a 100644
--- a/src/cairo-pdf-surface.c
+++ b/src/cairo-pdf-surface.c
@@ -130,6 +130,23 @@
  *
  * The PDF surface is used to render cairo graphics to Adobe
  * PDF files and is a multi-page vector surface backend.
+ *
+ * The following mime types are supported: %CAIRO_MIME_TYPE_JPEG,
+ * %CAIRO_MIME_TYPE_JP2, %CAIRO_MIME_TYPE_UNIQUE_ID,
+ * %CAIRO_MIME_TYPE_JBIG2, %CAIRO_MIME_TYPE_JBIG2_GLOBAL,
+ * %CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID.
+ *
+ * JBIG2 data in PDF must be in the embedded format as descibed in
+ * ISO/IEC 11544. Image specific JBIG2 data must be in
+ * %CAIRO_MIME_TYPE_JBIG2.  Any global segments in the JBIG2 data
+ * (segments with page association field set to 0) must be in
+ * %CAIRO_MIME_TYPE_JBIG2_GLOBAL. The global data may be shared by
+ * multiple images. All images sharing the same global data must set
+ * %CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID to a unique identifer. At least
+ * one of the images must provide the global data using
+ * %CAIRO_MIME_TYPE_JBIG2_GLOBAL. The global data will only be
+ * embedded once but shared by all JBIG2 images with the same
+ * %CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID.
  **/
 
 static cairo_bool_t
@@ -164,6 +181,9 @@ static const char *_cairo_pdf_supported_mime_types[] =
     CAIRO_MIME_TYPE_JPEG,
     CAIRO_MIME_TYPE_JP2,
     CAIRO_MIME_TYPE_UNIQUE_ID,
+    CAIRO_MIME_TYPE_JBIG2,
+    CAIRO_MIME_TYPE_JBIG2_GLOBAL,
+    CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID,
     NULL
 };
 
@@ -364,6 +384,7 @@ _cairo_pdf_surface_create_for_stream_internal (cairo_output_stream_t	*output,
 
     _cairo_array_init (&surface->page_patterns, sizeof (cairo_pdf_pattern_t));
     _cairo_array_init (&surface->page_surfaces, sizeof (cairo_pdf_source_surface_t));
+    _cairo_array_init (&surface->jbig2_global, sizeof (cairo_pdf_jbig2_global_t));
     surface->all_surfaces = _cairo_hash_table_create (_cairo_pdf_source_surface_equal);
     if (unlikely (surface->all_surfaces == NULL)) {
 	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
@@ -1174,6 +1195,20 @@ _cairo_pdf_surface_release_source_image_from_pattern (cairo_pdf_surface_t
 }
 
 static cairo_int_status_t
+_get_jbig2_image_info (cairo_surface_t		 *source,
+		       cairo_image_info_t	 *info,
+		       const unsigned char	**mime_data,
+		       unsigned long		 *mime_data_length)
+{
+    cairo_surface_get_mime_data (source, CAIRO_MIME_TYPE_JBIG2,
+				 mime_data, mime_data_length);
+    if (*mime_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    return _cairo_image_info_get_jbig2_info (info, *mime_data, *mime_data_length);
+}
+
+static cairo_int_status_t
 _get_jpx_image_info (cairo_surface_t		 *source,
 		     cairo_image_info_t		*info,
 		     const unsigned char	**mime_data,
@@ -1250,6 +1285,15 @@ _get_source_surface_size (cairo_surface_t         *source,
     extents->x = 0;
     extents->y = 0;
 
+    status = _get_jbig2_image_info (source, &info, &mime_data, &mime_data_length);
+    if (status != CAIRO_INT_STATUS_UNSUPPORTED) {
+	*width = info.width;
+	*height = info.height;
+	extents->width = info.width;
+	extents->height = info.height;
+	return status;
+    }
+
     status = _get_jpx_image_info (source, &info, &mime_data, &mime_data_length);
     if (status != CAIRO_INT_STATUS_UNSUPPORTED) {
 	*width = info.width;
@@ -1969,6 +2013,8 @@ _cairo_pdf_surface_finish (void *abstract_surface)
     long offset;
     cairo_pdf_resource_t info, catalog;
     cairo_status_t status, status2;
+    int size, i;
+    cairo_pdf_jbig2_global_t *global;
 
     status = surface->base.status;
     if (status == CAIRO_STATUS_SUCCESS)
@@ -2056,6 +2102,17 @@ _cairo_pdf_surface_finish (void *abstract_surface)
 	surface->font_subsets = NULL;
     }
 
+    size = _cairo_array_num_elements (&surface->jbig2_global);
+    for (i = 0; i < size; i++) {
+	global = (cairo_pdf_jbig2_global_t *) _cairo_array_index (&surface->jbig2_global, i);
+	free(global->id);
+	if (!global->emitted)
+	    return _cairo_error (CAIRO_STATUS_JBIG2_GLOBAL_MISSING);
+    }
+    _cairo_array_fini (&surface->jbig2_global);
+
+    _cairo_array_truncate (&surface->page_surfaces, 0);
+
     _cairo_surface_clipper_reset (&surface->clipper);
 
     return status;
@@ -2556,6 +2613,127 @@ CLEANUP:
 }
 
 static cairo_int_status_t
+_cairo_pdf_surface_lookup_jbig2_global (cairo_pdf_surface_t       *surface,
+					const unsigned char       *global_id,
+					unsigned long              global_id_length,
+					cairo_pdf_jbig2_global_t **entry)
+{
+    cairo_pdf_jbig2_global_t global;
+    int size, i;
+    cairo_int_status_t status;
+
+    size = _cairo_array_num_elements (&surface->jbig2_global);
+    for (i = 0; i < size; i++) {
+	*entry = (cairo_pdf_jbig2_global_t *) _cairo_array_index (&surface->jbig2_global, i);
+	if ((*entry)->id && global_id && (*entry)->id_length == global_id_length
+	    && memcmp((*entry)->id, global_id, global_id_length) == 0) {
+	    return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    global.id = malloc(global_id_length);
+    memcpy (global.id, global_id, global_id_length);
+    global.id_length = global_id_length;
+    global.res = _cairo_pdf_surface_new_object (surface);
+    if (global.res.id == 0)
+	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+
+    global.emitted = FALSE;
+    status = _cairo_array_append (&surface->jbig2_global, &global);
+    if (unlikely(status))
+	return status;
+
+    size = _cairo_array_num_elements (&surface->jbig2_global);
+    *entry = (cairo_pdf_jbig2_global_t *) _cairo_array_index (&surface->jbig2_global, size - 1);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_int_status_t
+_cairo_pdf_surface_emit_jbig2_image (cairo_pdf_surface_t   *surface,
+				     cairo_surface_t	   *source,
+				     cairo_pdf_resource_t   res)
+{
+    cairo_int_status_t status;
+    const unsigned char *mime_data;
+    unsigned long mime_data_length;
+    cairo_image_info_t info;
+    const unsigned char *global_id;
+    unsigned long global_id_length;
+    const unsigned char *global_data;
+    unsigned long global_data_length;
+    cairo_pdf_jbig2_global_t *global_entry;
+
+    cairo_surface_get_mime_data (source, CAIRO_MIME_TYPE_JBIG2,
+				 &mime_data, &mime_data_length);
+    if (mime_data == NULL)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
+    status = _cairo_image_info_get_jbig2_info (&info, mime_data, mime_data_length);
+    if (status)
+	return status;
+
+    cairo_surface_get_mime_data (source, CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID,
+				 &global_id, &global_id_length);
+    if (global_id && global_id_length > 0) {
+	status = _cairo_pdf_surface_lookup_jbig2_global (surface, global_id, global_id_length, &global_entry);
+	if (unlikely(status))
+	    return status;
+
+	if (!global_entry->emitted) {
+	    cairo_surface_get_mime_data (source, CAIRO_MIME_TYPE_JBIG2_GLOBAL,
+					 &global_data, &global_data_length);
+	    if (global_data) {
+		status = _cairo_pdf_surface_open_stream (surface, &global_entry->res, FALSE, NULL);
+		if (unlikely(status))
+		    return status;
+
+		_cairo_output_stream_write (surface->output, global_data, global_data_length);
+		status = _cairo_pdf_surface_close_stream (surface);
+		if (unlikely(status))
+		    return status;
+
+		global_entry->emitted = TRUE;
+	    }
+	}
+
+	status = _cairo_pdf_surface_open_stream (surface,
+						 &res,
+						 FALSE,
+						 "   /Type /XObject\n"
+						 "   /Subtype /Image\n"
+						 "   /Width %d\n"
+						 "   /Height %d\n"
+						 "   /ColorSpace /DeviceGray\n"
+						 "   /BitsPerComponent 1\n"
+						 "   /Filter /JBIG2Decode\n"
+						 "   /DecodeParms << /JBIG2Globals %d 0 R >>\n",
+						 info.width,
+						 info.height,
+						 global_entry->res.id);
+    } else {
+	status = _cairo_pdf_surface_open_stream (surface,
+						 &res,
+						 FALSE,
+						 "   /Type /XObject\n"
+						 "   /Subtype /Image\n"
+						 "   /Width %d\n"
+						 "   /Height %d\n"
+						 "   /ColorSpace /DeviceGray\n"
+						 "   /BitsPerComponent 1\n"
+						 "   /Filter /JBIG2Decode\n",
+						 info.width,
+						 info.height);
+    }
+    if (unlikely(status))
+	return status;
+
+    _cairo_output_stream_write (surface->output, mime_data, mime_data_length);
+    status = _cairo_pdf_surface_close_stream (surface);
+
+    return status;
+}
+
+static cairo_int_status_t
 _cairo_pdf_surface_emit_jpx_image (cairo_pdf_surface_t   *surface,
 				   cairo_surface_t	 *source,
 				   cairo_pdf_resource_t   res)
@@ -2665,6 +2843,10 @@ _cairo_pdf_surface_emit_image_surface (cairo_pdf_surface_t        *surface,
 
     if (source->type == CAIRO_PATTERN_TYPE_SURFACE) {
 	if (!source->hash_entry->stencil_mask) {
+	    status = _cairo_pdf_surface_emit_jbig2_image (surface, source->surface, source->hash_entry->surface_res);
+	    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
+		return status;
+
 	    status = _cairo_pdf_surface_emit_jpx_image (surface, source->surface, source->hash_entry->surface_res);
 	    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
 		return status;
diff --git a/src/cairo-region.c b/src/cairo-region.c
index a51e224..ceaf4c0 100644
--- a/src/cairo-region.c
+++ b/src/cairo-region.c
@@ -106,6 +106,7 @@ _cairo_region_create_in_error (cairo_status_t status)
     case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED:
     case CAIRO_STATUS_INVALID_MESH_CONSTRUCTION:
     case CAIRO_STATUS_DEVICE_FINISHED:
+    case CAIRO_STATUS_JBIG2_GLOBAL_MISSING:
     default:
 	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
 	return (cairo_region_t *) &_cairo_region_nil;
diff --git a/src/cairo-spans.c b/src/cairo-spans.c
index b8d4180..182390c 100644
--- a/src/cairo-spans.c
+++ b/src/cairo-spans.c
@@ -0,0 +1,250 @@
+/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright (c) 2008  M Joonas Pihlaja
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "cairoint.h"
+
+#include "cairo-composite-rectangles-private.h"
+#include "cairo-clip-private.h"
+#include "cairo-error-private.h"
+#include "cairo-fixed-private.h"
+#include "cairo-types-private.h"
+
+static void
+_cairo_nil_destroy (void *abstract)
+{
+    (void) abstract;
+}
+
+static cairo_status_t
+_cairo_nil_scan_converter_generate (void *abstract_converter,
+				    cairo_span_renderer_t *renderer)
+{
+    (void) abstract_converter;
+    (void) renderer;
+    return _cairo_scan_converter_status (abstract_converter);
+}
+
+cairo_status_t
+_cairo_scan_converter_status (void *abstract_converter)
+{
+    cairo_scan_converter_t *converter = abstract_converter;
+    return converter->status;
+}
+
+cairo_status_t
+_cairo_scan_converter_set_error (void *abstract_converter,
+				 cairo_status_t error)
+{
+    cairo_scan_converter_t *converter = abstract_converter;
+    if (error == CAIRO_STATUS_SUCCESS)
+	ASSERT_NOT_REACHED;
+    if (converter->status == CAIRO_STATUS_SUCCESS) {
+	converter->generate = _cairo_nil_scan_converter_generate;
+	converter->status = error;
+    }
+    return converter->status;
+}
+
+static void
+_cairo_nil_scan_converter_init (cairo_scan_converter_t *converter,
+				cairo_status_t status)
+{
+    converter->destroy = _cairo_nil_destroy;
+    converter->status = CAIRO_STATUS_SUCCESS;
+    status = _cairo_scan_converter_set_error (converter, status);
+}
+
+cairo_scan_converter_t *
+_cairo_scan_converter_create_in_error (cairo_status_t status)
+{
+#define RETURN_NIL {\
+	    static cairo_scan_converter_t nil;\
+	    _cairo_nil_scan_converter_init (&nil, status);\
+	    return &nil;\
+	}
+    switch (status) {
+    case CAIRO_STATUS_SUCCESS:
+    case CAIRO_STATUS_LAST_STATUS:
+	ASSERT_NOT_REACHED;
+	break;
+    case CAIRO_STATUS_INVALID_RESTORE: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_POP_GROUP: RETURN_NIL;
+    case CAIRO_STATUS_NO_CURRENT_POINT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_MATRIX: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_STATUS: RETURN_NIL;
+    case CAIRO_STATUS_NULL_POINTER: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_STRING: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_PATH_DATA: RETURN_NIL;
+    case CAIRO_STATUS_READ_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_WRITE_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_SURFACE_FINISHED: RETURN_NIL;
+    case CAIRO_STATUS_SURFACE_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_PATTERN_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_CONTENT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_FORMAT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_VISUAL: RETURN_NIL;
+    case CAIRO_STATUS_FILE_NOT_FOUND: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_DASH: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_DSC_COMMENT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_INDEX: RETURN_NIL;
+    case CAIRO_STATUS_CLIP_NOT_REPRESENTABLE: RETURN_NIL;
+    case CAIRO_STATUS_TEMP_FILE_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_STRIDE: RETURN_NIL;
+    case CAIRO_STATUS_FONT_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_USER_FONT_IMMUTABLE: RETURN_NIL;
+    case CAIRO_STATUS_USER_FONT_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_NEGATIVE_COUNT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_CLUSTERS: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_SLANT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_WEIGHT: RETURN_NIL;
+    case CAIRO_STATUS_NO_MEMORY: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_SIZE: RETURN_NIL;
+    case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED: RETURN_NIL;
+    case CAIRO_STATUS_DEVICE_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_DEVICE_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_MESH_CONSTRUCTION: RETURN_NIL;
+    case CAIRO_STATUS_DEVICE_FINISHED: RETURN_NIL;
+    case CAIRO_STATUS_JBIG2_GLOBAL_MISSING:
+    default:
+	break;
+    }
+    status = CAIRO_STATUS_NO_MEMORY;
+    RETURN_NIL;
+#undef RETURN_NIL
+}
+
+static cairo_status_t
+_cairo_nil_span_renderer_render_rows (
+    void				*abstract_renderer,
+    int					 y,
+    int					 height,
+    const cairo_half_open_span_t	*coverages,
+    unsigned				 num_coverages)
+{
+    (void) y;
+    (void) height;
+    (void) coverages;
+    (void) num_coverages;
+    return _cairo_span_renderer_status (abstract_renderer);
+}
+
+static cairo_status_t
+_cairo_nil_span_renderer_finish (void *abstract_renderer)
+{
+    return _cairo_span_renderer_status (abstract_renderer);
+}
+
+cairo_status_t
+_cairo_span_renderer_status (void *abstract_renderer)
+{
+    cairo_span_renderer_t *renderer = abstract_renderer;
+    return renderer->status;
+}
+
+cairo_status_t
+_cairo_span_renderer_set_error (
+    void *abstract_renderer,
+    cairo_status_t error)
+{
+    cairo_span_renderer_t *renderer = abstract_renderer;
+    if (error == CAIRO_STATUS_SUCCESS) {
+	ASSERT_NOT_REACHED;
+    }
+    if (renderer->status == CAIRO_STATUS_SUCCESS) {
+	renderer->render_rows = _cairo_nil_span_renderer_render_rows;
+	renderer->finish = _cairo_nil_span_renderer_finish;
+	renderer->status = error;
+    }
+    return renderer->status;
+}
+
+static void
+_cairo_nil_span_renderer_init (cairo_span_renderer_t *renderer,
+			       cairo_status_t status)
+{
+    renderer->destroy = _cairo_nil_destroy;
+    renderer->status = CAIRO_STATUS_SUCCESS;
+    status = _cairo_span_renderer_set_error (renderer, status);
+}
+
+cairo_span_renderer_t *
+_cairo_span_renderer_create_in_error (cairo_status_t status)
+{
+#define RETURN_NIL {\
+	    static cairo_span_renderer_t nil;\
+	    _cairo_nil_span_renderer_init (&nil, status);\
+	    return &nil;\
+	}
+    switch (status) {
+    case CAIRO_STATUS_SUCCESS:
+    case CAIRO_STATUS_LAST_STATUS:
+	ASSERT_NOT_REACHED;
+	break;
+    case CAIRO_STATUS_INVALID_RESTORE: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_POP_GROUP: RETURN_NIL;
+    case CAIRO_STATUS_NO_CURRENT_POINT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_MATRIX: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_STATUS: RETURN_NIL;
+    case CAIRO_STATUS_NULL_POINTER: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_STRING: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_PATH_DATA: RETURN_NIL;
+    case CAIRO_STATUS_READ_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_WRITE_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_SURFACE_FINISHED: RETURN_NIL;
+    case CAIRO_STATUS_SURFACE_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_PATTERN_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_CONTENT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_FORMAT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_VISUAL: RETURN_NIL;
+    case CAIRO_STATUS_FILE_NOT_FOUND: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_DASH: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_DSC_COMMENT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_INDEX: RETURN_NIL;
+    case CAIRO_STATUS_CLIP_NOT_REPRESENTABLE: RETURN_NIL;
+    case CAIRO_STATUS_TEMP_FILE_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_STRIDE: RETURN_NIL;
+    case CAIRO_STATUS_FONT_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_USER_FONT_IMMUTABLE: RETURN_NIL;
+    case CAIRO_STATUS_USER_FONT_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_NEGATIVE_COUNT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_CLUSTERS: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_SLANT: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_WEIGHT: RETURN_NIL;
+    case CAIRO_STATUS_NO_MEMORY: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_SIZE: RETURN_NIL;
+    case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED: RETURN_NIL;
+    case CAIRO_STATUS_DEVICE_TYPE_MISMATCH: RETURN_NIL;
+    case CAIRO_STATUS_DEVICE_ERROR: RETURN_NIL;
+    case CAIRO_STATUS_INVALID_MESH_CONSTRUCTION: RETURN_NIL;
+    case CAIRO_STATUS_DEVICE_FINISHED: RETURN_NIL;
+    case CAIRO_STATUS_JBIG2_GLOBAL_MISSING: RETURN_NIL;
+    default:
+	break;
+    }
+    status = CAIRO_STATUS_NO_MEMORY;
+    RETURN_NIL;
+#undef RETURN_NIL
+}
diff --git a/src/cairo-surface.c b/src/cairo-surface.c
index f2f2ef6..d550131 100644
--- a/src/cairo-surface.c
+++ b/src/cairo-surface.c
@@ -1285,7 +1285,8 @@ _cairo_mime_data_destroy (void *ptr)
  *
  * The recognized MIME types are the following: %CAIRO_MIME_TYPE_JPEG,
  * %CAIRO_MIME_TYPE_PNG, %CAIRO_MIME_TYPE_JP2, %CAIRO_MIME_TYPE_URI,
- * %CAIRO_MIME_TYPE_UNIQUE_ID.
+ * %CAIRO_MIME_TYPE_UNIQUE_ID, %CAIRO_MIME_TYPE_JBIG2,
+ * %CAIRO_MIME_TYPE_JBIG2_GLOBAL, %CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID.
  *
  * See corresponding backend surface docs for details about which MIME
  * types it can handle. Caution: the associated MIME data will be
@@ -2674,6 +2675,7 @@ _cairo_surface_create_in_error (cairo_status_t status)
     case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED:
     case CAIRO_STATUS_INVALID_MESH_CONSTRUCTION:
     case CAIRO_STATUS_DEVICE_FINISHED:
+    case CAIRO_STATUS_JBIG2_GLOBAL_MISSING:
     default:
 	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
 	return (cairo_surface_t *) &_cairo_surface_nil;
diff --git a/src/cairo.c b/src/cairo.c
index 82396d2..c7128ae 100644
--- a/src/cairo.c
+++ b/src/cairo.c
@@ -152,7 +152,9 @@ static const cairo_t _cairo_nil[] = {
     DEFINE_NIL_CONTEXT (CAIRO_STATUS_DEVICE_TYPE_MISMATCH),
     DEFINE_NIL_CONTEXT (CAIRO_STATUS_DEVICE_ERROR),
     DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_MESH_CONSTRUCTION),
-    DEFINE_NIL_CONTEXT (CAIRO_STATUS_DEVICE_FINISHED)
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_DEVICE_FINISHED),
+    DEFINE_NIL_CONTEXT (CAIRO_STATUS_JBIG2_GLOBAL_MISSING)
+
 };
 COMPILE_TIME_ASSERT (ARRAY_LENGTH (_cairo_nil) == CAIRO_STATUS_LAST_STATUS - 1);
 
diff --git a/src/cairo.h b/src/cairo.h
index de35126..2e69793 100644
--- a/src/cairo.h
+++ b/src/cairo.h
@@ -290,6 +290,8 @@ typedef struct _cairo_user_data_key {
  *   cairo_mesh_pattern_begin_patch()/cairo_mesh_pattern_end_patch()
  *   pair (Since 1.12)
  * @CAIRO_STATUS_DEVICE_FINISHED: target device has been finished (Since 1.12)
+ * @CAIRO_STATUS_JBIG2_GLOBAL_MISSING: %CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID has been used on at least one image
+ *   but no image provided %CAIRO_MIME_TYPE_JBIG2_GLOBAL (Since 1.14)
  * @CAIRO_STATUS_LAST_STATUS: this is a special value indicating the number of
  *   status values defined in this enumeration.  When using this value, note
  *   that the version of cairo at run-time may have additional status values
@@ -345,6 +347,7 @@ typedef enum _cairo_status {
     CAIRO_STATUS_DEVICE_ERROR,
     CAIRO_STATUS_INVALID_MESH_CONSTRUCTION,
     CAIRO_STATUS_DEVICE_FINISHED,
+    CAIRO_STATUS_JBIG2_GLOBAL_MISSING,
 
     CAIRO_STATUS_LAST_STATUS
 } cairo_status_t;
@@ -2419,6 +2422,9 @@ cairo_surface_set_user_data (cairo_surface_t		 *surface,
 #define CAIRO_MIME_TYPE_JP2 "image/jp2"
 #define CAIRO_MIME_TYPE_URI "text/x-uri"
 #define CAIRO_MIME_TYPE_UNIQUE_ID "application/x-cairo.uuid"
+#define CAIRO_MIME_TYPE_JBIG2 "application/x-cairo.jbig2"
+#define CAIRO_MIME_TYPE_JBIG2_GLOBAL "application/x-cairo.jbig2-global"
+#define CAIRO_MIME_TYPE_JBIG2_GLOBAL_ID "application/x-cairo.jbig2-global-id"
 
 cairo_public void
 cairo_surface_get_mime_data (cairo_surface_t		*surface,