d97cdbdf53
2008-06-21 Johan Dahlin <jdahlin@async.com.br> * *.[ch]: Include "config.h" instead of <config.h> Command used: find -name \*.[ch]|xargs perl -p -i -e 's/^#include <config.h>/#include "config.h"/g' Rubberstamped by Mitch and Tim svn path=/trunk/; revision=20669
821 lines
24 KiB
C
821 lines
24 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
|
||
/* GdkPixbuf library - TIFF image loader
|
||
*
|
||
* Copyright (C) 1999 Mark Crichton
|
||
* Copyright (C) 1999 The Free Software Foundation
|
||
*
|
||
* Authors: Mark Crichton <crichton@gimp.org>
|
||
* Federico Mena-Quintero <federico@gimp.org>
|
||
* Jonathan Blandford <jrb@redhat.com>
|
||
* S<>ren Sandmann <sandmann@daimi.au.dk>
|
||
*
|
||
* This library is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU Lesser General Public
|
||
* License as published by the Free Software Foundation; either
|
||
* version 2 of the License, or (at your option) any later version.
|
||
*
|
||
* This library is distributed in the hope that it will be useful,
|
||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
* Lesser General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Lesser General Public
|
||
* License along with this library; if not, write to the
|
||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||
* Boston, MA 02111-1307, USA.
|
||
*/
|
||
|
||
/* Following code (almost) blatantly ripped from Imlib */
|
||
|
||
#include "config.h"
|
||
#include <stdlib.h>
|
||
#include <string.h>
|
||
#ifdef HAVE_UNISTD_H
|
||
#include <unistd.h>
|
||
#endif
|
||
#include <tiffio.h>
|
||
#include <errno.h>
|
||
#include "gdk-pixbuf-private.h"
|
||
#include "gdk-pixbuf-io.h"
|
||
|
||
#ifdef G_OS_WIN32
|
||
#include <fcntl.h>
|
||
#include <io.h>
|
||
#define lseek(a,b,c) _lseek(a,b,c)
|
||
#define O_RDWR _O_RDWR
|
||
#endif
|
||
|
||
|
||
typedef struct _TiffContext TiffContext;
|
||
struct _TiffContext
|
||
{
|
||
GdkPixbufModuleSizeFunc size_func;
|
||
GdkPixbufModulePreparedFunc prepare_func;
|
||
GdkPixbufModuleUpdatedFunc update_func;
|
||
gpointer user_data;
|
||
|
||
guchar *buffer;
|
||
guint allocated;
|
||
guint used;
|
||
guint pos;
|
||
};
|
||
|
||
|
||
|
||
static char *global_error = NULL;
|
||
static TIFFErrorHandler orig_error_handler = NULL;
|
||
static TIFFErrorHandler orig_warning_handler = NULL;
|
||
|
||
static void
|
||
tiff_warning_handler (const char *mod, const char *fmt, va_list ap)
|
||
{
|
||
/* Don't print anything; we should not be dumping junk to
|
||
* stderr, since that may be bad for some apps.
|
||
*/
|
||
|
||
/* libTIFF seems to occasionally warn about things that
|
||
* are really errors, so maybe we should just call tiff_error_handler
|
||
* here.
|
||
*/
|
||
}
|
||
|
||
static void
|
||
tiff_error_handler (const char *mod, const char *fmt, va_list ap)
|
||
{
|
||
if (global_error) {
|
||
/* Blah, loader called us twice */
|
||
return;
|
||
}
|
||
|
||
global_error = g_strdup_vprintf (fmt, ap);
|
||
}
|
||
|
||
static void
|
||
tiff_push_handlers (void)
|
||
{
|
||
if (global_error)
|
||
g_warning ("TIFF loader left crufty global_error around, FIXME");
|
||
|
||
orig_error_handler = TIFFSetErrorHandler (tiff_error_handler);
|
||
orig_warning_handler = TIFFSetWarningHandler (tiff_warning_handler);
|
||
}
|
||
|
||
static void
|
||
tiff_pop_handlers (void)
|
||
{
|
||
if (global_error)
|
||
g_warning ("TIFF loader left crufty global_error around, FIXME");
|
||
|
||
TIFFSetErrorHandler (orig_error_handler);
|
||
TIFFSetWarningHandler (orig_warning_handler);
|
||
}
|
||
|
||
static void
|
||
tiff_set_error (GError **error,
|
||
int error_code,
|
||
const char *msg)
|
||
{
|
||
/* Take the error message from libtiff and merge it with
|
||
* some context we provide.
|
||
*/
|
||
if (global_error) {
|
||
g_set_error (error,
|
||
GDK_PIXBUF_ERROR,
|
||
error_code,
|
||
"%s%s%s", msg, ": ", global_error);
|
||
|
||
g_free (global_error);
|
||
global_error = NULL;
|
||
}
|
||
else {
|
||
g_set_error_literal (error,
|
||
GDK_PIXBUF_ERROR,
|
||
error_code, msg);
|
||
}
|
||
}
|
||
|
||
|
||
|
||
static void free_buffer (guchar *pixels, gpointer data)
|
||
{
|
||
g_free (pixels);
|
||
}
|
||
|
||
static GdkPixbuf *
|
||
tiff_image_parse (TIFF *tiff, TiffContext *context, GError **error)
|
||
{
|
||
guchar *pixels = NULL;
|
||
gint width, height, rowstride, bytes;
|
||
GdkPixbuf *pixbuf;
|
||
uint16 orientation = 0;
|
||
uint16 transform = 0;
|
||
|
||
/* We're called with the lock held. */
|
||
|
||
g_return_val_if_fail (global_error == NULL, NULL);
|
||
|
||
if (!TIFFGetField (tiff, TIFFTAG_IMAGEWIDTH, &width) || global_error) {
|
||
tiff_set_error (error,
|
||
GDK_PIXBUF_ERROR_FAILED,
|
||
_("Could not get image width (bad TIFF file)"));
|
||
return NULL;
|
||
}
|
||
|
||
if (!TIFFGetField (tiff, TIFFTAG_IMAGELENGTH, &height) || global_error) {
|
||
tiff_set_error (error,
|
||
GDK_PIXBUF_ERROR_FAILED,
|
||
_("Could not get image height (bad TIFF file)"));
|
||
return NULL;
|
||
}
|
||
|
||
if (width <= 0 || height <= 0) {
|
||
g_set_error_literal (error,
|
||
GDK_PIXBUF_ERROR,
|
||
GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
|
||
_("Width or height of TIFF image is zero"));
|
||
return NULL;
|
||
}
|
||
|
||
rowstride = width * 4;
|
||
if (rowstride / 4 != width) { /* overflow */
|
||
g_set_error_literal (error,
|
||
GDK_PIXBUF_ERROR,
|
||
GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
|
||
_("Dimensions of TIFF image too large"));
|
||
return NULL;
|
||
}
|
||
|
||
bytes = height * rowstride;
|
||
if (bytes / rowstride != height) { /* overflow */
|
||
g_set_error_literal (error,
|
||
GDK_PIXBUF_ERROR,
|
||
GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
|
||
_("Dimensions of TIFF image too large"));
|
||
return NULL;
|
||
}
|
||
|
||
if (context && context->size_func) {
|
||
gint w = width;
|
||
gint h = height;
|
||
(* context->size_func) (&w, &h, context->user_data);
|
||
|
||
/* This is a signal that this function is being called
|
||
to support gdk_pixbuf_get_file_info, so we can stop
|
||
parsing the tiff file at this point. It is not an
|
||
error condition. */
|
||
|
||
if (w == 0 || h == 0)
|
||
return NULL;
|
||
}
|
||
|
||
pixels = g_try_malloc (bytes);
|
||
|
||
if (!pixels) {
|
||
g_set_error_literal (error,
|
||
GDK_PIXBUF_ERROR,
|
||
GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
|
||
_("Insufficient memory to open TIFF file"));
|
||
return NULL;
|
||
}
|
||
|
||
pixbuf = gdk_pixbuf_new_from_data (pixels, GDK_COLORSPACE_RGB, TRUE, 8,
|
||
width, height, rowstride,
|
||
free_buffer, NULL);
|
||
if (!pixbuf) {
|
||
g_free (pixels);
|
||
g_set_error_literal (error,
|
||
GDK_PIXBUF_ERROR,
|
||
GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
|
||
_("Insufficient memory to open TIFF file"));
|
||
return NULL;
|
||
}
|
||
|
||
/* Set the "orientation" key associated with this image. libtiff
|
||
orientation handling is odd, so further processing is required
|
||
by higher-level functions based on this tag. If the embedded
|
||
orientation tag is 1-4, libtiff flips/mirrors the image as
|
||
required, and no client processing is required - so we report
|
||
no orientation. Orientations 5-8 require rotations which would
|
||
swap the width and height of the image. libtiff does not do this.
|
||
Instead it interprets orientations 5-8 the same as 1-4.
|
||
See http://bugzilla.remotesensing.org/show_bug.cgi?id=1548.
|
||
To correct for this, the client must apply the transform normally
|
||
used for orientation 5 to both orientations 5 and 7, and apply
|
||
the transform normally used for orientation 7 for both
|
||
orientations 6 and 8. Then everythings works out OK! */
|
||
|
||
TIFFGetField (tiff, TIFFTAG_ORIENTATION, &orientation);
|
||
|
||
switch (orientation) {
|
||
case 5:
|
||
case 7:
|
||
transform = 5;
|
||
break;
|
||
case 6:
|
||
case 8:
|
||
transform = 7;
|
||
break;
|
||
default:
|
||
transform = 0;
|
||
break;
|
||
}
|
||
|
||
if (transform > 0 ) {
|
||
gchar str[5];
|
||
g_snprintf (str, sizeof (str), "%d", transform);
|
||
gdk_pixbuf_set_option (pixbuf, "orientation", str);
|
||
}
|
||
|
||
if (context && context->prepare_func)
|
||
(* context->prepare_func) (pixbuf, NULL, context->user_data);
|
||
|
||
if (!TIFFReadRGBAImageOriented (tiff, width, height, (uint32 *)pixels, ORIENTATION_TOPLEFT, 1) || global_error) {
|
||
tiff_set_error (error,
|
||
GDK_PIXBUF_ERROR_FAILED,
|
||
_("Failed to load RGB data from TIFF file"));
|
||
g_object_unref (pixbuf);
|
||
return NULL;
|
||
}
|
||
|
||
#if G_BYTE_ORDER == G_BIG_ENDIAN
|
||
/* Turns out that the packing used by TIFFRGBAImage depends on
|
||
* the host byte order...
|
||
*/
|
||
while (pixels < pixbuf->pixels + bytes) {
|
||
uint32 pixel = *(uint32 *)pixels;
|
||
int r = TIFFGetR(pixel);
|
||
int g = TIFFGetG(pixel);
|
||
int b = TIFFGetB(pixel);
|
||
int a = TIFFGetA(pixel);
|
||
*pixels++ = r;
|
||
*pixels++ = g;
|
||
*pixels++ = b;
|
||
*pixels++ = a;
|
||
}
|
||
#endif
|
||
|
||
if (context && context->update_func)
|
||
(* context->update_func) (pixbuf, 0, 0, width, height, context->user_data);
|
||
|
||
return pixbuf;
|
||
}
|
||
|
||
|
||
|
||
/* Static loader */
|
||
|
||
static GdkPixbuf *
|
||
gdk_pixbuf__tiff_image_load (FILE *f, GError **error)
|
||
{
|
||
TIFF *tiff;
|
||
int fd;
|
||
GdkPixbuf *pixbuf;
|
||
|
||
g_return_val_if_fail (f != NULL, NULL);
|
||
|
||
tiff_push_handlers ();
|
||
|
||
fd = fileno (f);
|
||
|
||
/* On OSF, apparently fseek() works in some on-demand way, so
|
||
* the fseek gdk_pixbuf_new_from_file() doesn't work here
|
||
* since we are using the raw file descriptor. So, we call lseek() on the fd
|
||
* before using it. (#60840)
|
||
*/
|
||
lseek (fd, 0, SEEK_SET);
|
||
tiff = TIFFFdOpen (fd, "libpixbuf-tiff", "r");
|
||
|
||
if (!tiff || global_error) {
|
||
tiff_set_error (error,
|
||
GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
|
||
_("Failed to open TIFF image"));
|
||
tiff_pop_handlers ();
|
||
|
||
return NULL;
|
||
}
|
||
|
||
pixbuf = tiff_image_parse (tiff, NULL, error);
|
||
|
||
TIFFClose (tiff);
|
||
if (global_error) {
|
||
tiff_set_error (error,
|
||
GDK_PIXBUF_ERROR_FAILED,
|
||
_("TIFFClose operation failed"));
|
||
}
|
||
|
||
tiff_pop_handlers ();
|
||
|
||
return pixbuf;
|
||
}
|
||
|
||
|
||
|
||
/* Progressive loader */
|
||
|
||
static gpointer
|
||
gdk_pixbuf__tiff_image_begin_load (GdkPixbufModuleSizeFunc size_func,
|
||
GdkPixbufModulePreparedFunc prepare_func,
|
||
GdkPixbufModuleUpdatedFunc update_func,
|
||
gpointer user_data,
|
||
GError **error)
|
||
{
|
||
TiffContext *context;
|
||
|
||
context = g_new0 (TiffContext, 1);
|
||
context->size_func = size_func;
|
||
context->prepare_func = prepare_func;
|
||
context->update_func = update_func;
|
||
context->user_data = user_data;
|
||
context->buffer = NULL;
|
||
context->allocated = 0;
|
||
context->used = 0;
|
||
context->pos = 0;
|
||
|
||
return context;
|
||
}
|
||
|
||
static tsize_t
|
||
tiff_load_read (thandle_t handle, tdata_t buf, tsize_t size)
|
||
{
|
||
TiffContext *context = (TiffContext *)handle;
|
||
|
||
if (context->pos + size > context->used)
|
||
return 0;
|
||
|
||
memcpy (buf, context->buffer + context->pos, size);
|
||
context->pos += size;
|
||
return size;
|
||
}
|
||
|
||
static tsize_t
|
||
tiff_load_write (thandle_t handle, tdata_t buf, tsize_t size)
|
||
{
|
||
return -1;
|
||
}
|
||
|
||
static toff_t
|
||
tiff_load_seek (thandle_t handle, toff_t offset, int whence)
|
||
{
|
||
TiffContext *context = (TiffContext *)handle;
|
||
|
||
switch (whence) {
|
||
case SEEK_SET:
|
||
if (offset > context->used)
|
||
return -1;
|
||
context->pos = offset;
|
||
break;
|
||
case SEEK_CUR:
|
||
if (offset + context->pos >= context->used)
|
||
return -1;
|
||
context->pos += offset;
|
||
break;
|
||
case SEEK_END:
|
||
if (offset + context->used > context->used)
|
||
return -1;
|
||
context->pos = context->used + offset;
|
||
break;
|
||
default:
|
||
return -1;
|
||
}
|
||
return context->pos;
|
||
}
|
||
|
||
static int
|
||
tiff_load_close (thandle_t context)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
static toff_t
|
||
tiff_load_size (thandle_t handle)
|
||
{
|
||
TiffContext *context = (TiffContext *)handle;
|
||
|
||
return context->used;
|
||
}
|
||
|
||
static int
|
||
tiff_load_map_file (thandle_t handle, tdata_t *buf, toff_t *size)
|
||
{
|
||
TiffContext *context = (TiffContext *)handle;
|
||
|
||
*buf = context->buffer;
|
||
*size = context->used;
|
||
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
tiff_load_unmap_file (thandle_t handle, tdata_t data, toff_t offset)
|
||
{
|
||
}
|
||
|
||
static gboolean
|
||
gdk_pixbuf__tiff_image_stop_load (gpointer data,
|
||
GError **error)
|
||
{
|
||
TiffContext *context = data;
|
||
TIFF *tiff;
|
||
gboolean retval;
|
||
|
||
g_return_val_if_fail (data != NULL, FALSE);
|
||
|
||
tiff_push_handlers ();
|
||
|
||
tiff = TIFFClientOpen ("libtiff-pixbuf", "r", data,
|
||
tiff_load_read, tiff_load_write,
|
||
tiff_load_seek, tiff_load_close,
|
||
tiff_load_size,
|
||
tiff_load_map_file, tiff_load_unmap_file);
|
||
if (!tiff || global_error) {
|
||
tiff_set_error (error,
|
||
GDK_PIXBUF_ERROR_FAILED,
|
||
_("Failed to load TIFF image"));
|
||
retval = FALSE;
|
||
} else {
|
||
GdkPixbuf *pixbuf;
|
||
|
||
pixbuf = tiff_image_parse (tiff, context, error);
|
||
if (pixbuf)
|
||
g_object_unref (pixbuf);
|
||
retval = pixbuf != NULL;
|
||
if (global_error)
|
||
{
|
||
tiff_set_error (error,
|
||
GDK_PIXBUF_ERROR_FAILED,
|
||
_("Failed to load TIFF image"));
|
||
tiff_pop_handlers ();
|
||
|
||
retval = FALSE;
|
||
}
|
||
}
|
||
|
||
if (tiff)
|
||
TIFFClose (tiff);
|
||
|
||
g_assert (!global_error);
|
||
|
||
g_free (context->buffer);
|
||
g_free (context);
|
||
|
||
tiff_pop_handlers ();
|
||
|
||
return retval;
|
||
}
|
||
|
||
static gboolean
|
||
make_available_at_least (TiffContext *context, guint needed)
|
||
{
|
||
guchar *new_buffer = NULL;
|
||
guint need_alloc;
|
||
|
||
need_alloc = context->used + needed;
|
||
if (need_alloc > context->allocated) {
|
||
guint new_size = 1;
|
||
while (new_size < need_alloc)
|
||
new_size *= 2;
|
||
|
||
new_buffer = g_try_realloc (context->buffer, new_size);
|
||
if (new_buffer) {
|
||
context->buffer = new_buffer;
|
||
context->allocated = new_size;
|
||
return TRUE;
|
||
}
|
||
return FALSE;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
static gboolean
|
||
gdk_pixbuf__tiff_image_load_increment (gpointer data, const guchar *buf,
|
||
guint size, GError **error)
|
||
{
|
||
TiffContext *context = (TiffContext *) data;
|
||
|
||
g_return_val_if_fail (data != NULL, FALSE);
|
||
|
||
if (!make_available_at_least (context, size)) {
|
||
g_set_error_literal (error,
|
||
GDK_PIXBUF_ERROR,
|
||
GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
|
||
_("Insufficient memory to open TIFF file"));
|
||
return FALSE;
|
||
}
|
||
|
||
memcpy (context->buffer + context->used, buf, size);
|
||
context->used += size;
|
||
return TRUE;
|
||
}
|
||
|
||
typedef struct {
|
||
gchar *buffer;
|
||
guint allocated;
|
||
guint used;
|
||
guint pos;
|
||
} TiffSaveContext;
|
||
|
||
static tsize_t
|
||
tiff_save_read (thandle_t handle, tdata_t buf, tsize_t size)
|
||
{
|
||
return -1;
|
||
}
|
||
|
||
static tsize_t
|
||
tiff_save_write (thandle_t handle, tdata_t buf, tsize_t size)
|
||
{
|
||
TiffSaveContext *context = (TiffSaveContext *)handle;
|
||
|
||
/* Modify buffer length */
|
||
if (context->pos + size > context->used)
|
||
context->used = context->pos + size;
|
||
|
||
/* Realloc */
|
||
if (context->used > context->allocated) {
|
||
context->buffer = g_realloc (context->buffer, context->pos + size);
|
||
context->allocated = context->used;
|
||
}
|
||
|
||
/* Now copy the data */
|
||
memcpy (context->buffer + context->pos, buf, size);
|
||
|
||
/* Update pos */
|
||
context->pos += size;
|
||
|
||
return size;
|
||
}
|
||
|
||
static toff_t
|
||
tiff_save_seek (thandle_t handle, toff_t offset, int whence)
|
||
{
|
||
TiffSaveContext *context = (TiffSaveContext *)handle;
|
||
|
||
switch (whence) {
|
||
case SEEK_SET:
|
||
context->pos = offset;
|
||
break;
|
||
case SEEK_CUR:
|
||
context->pos += offset;
|
||
break;
|
||
case SEEK_END:
|
||
context->pos = context->used + offset;
|
||
break;
|
||
default:
|
||
return -1;
|
||
}
|
||
return context->pos;
|
||
}
|
||
|
||
static int
|
||
tiff_save_close (thandle_t context)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
static toff_t
|
||
tiff_save_size (thandle_t handle)
|
||
{
|
||
return -1;
|
||
}
|
||
|
||
static TiffSaveContext *
|
||
create_save_context (void)
|
||
{
|
||
TiffSaveContext *context;
|
||
|
||
context = g_new (TiffSaveContext, 1);
|
||
context->buffer = NULL;
|
||
context->allocated = 0;
|
||
context->used = 0;
|
||
context->pos = 0;
|
||
|
||
return context;
|
||
}
|
||
|
||
static void
|
||
free_save_context (TiffSaveContext *context)
|
||
{
|
||
g_free (context->buffer);
|
||
g_free (context);
|
||
}
|
||
|
||
static gboolean
|
||
gdk_pixbuf__tiff_image_save_to_callback (GdkPixbufSaveFunc save_func,
|
||
gpointer user_data,
|
||
GdkPixbuf *pixbuf,
|
||
gchar **keys,
|
||
gchar **values,
|
||
GError **error)
|
||
{
|
||
TIFF *tiff;
|
||
gint width, height, rowstride;
|
||
guchar *pixels;
|
||
gboolean has_alpha;
|
||
gushort alpha_samples[1] = { EXTRASAMPLE_UNASSALPHA };
|
||
int y;
|
||
TiffSaveContext *context;
|
||
gboolean retval;
|
||
|
||
tiff_push_handlers ();
|
||
|
||
context = create_save_context ();
|
||
tiff = TIFFClientOpen ("libtiff-pixbuf", "w", context,
|
||
tiff_save_read, tiff_save_write,
|
||
tiff_save_seek, tiff_save_close,
|
||
tiff_save_size,
|
||
NULL, NULL);
|
||
|
||
if (!tiff || global_error) {
|
||
tiff_set_error (error,
|
||
GDK_PIXBUF_ERROR_FAILED,
|
||
_("Failed to save TIFF image"));
|
||
|
||
tiff_pop_handlers ();
|
||
|
||
free_save_context (context);
|
||
return FALSE;
|
||
}
|
||
|
||
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
|
||
pixels = gdk_pixbuf_get_pixels (pixbuf);
|
||
|
||
has_alpha = gdk_pixbuf_get_has_alpha (pixbuf);
|
||
|
||
height = gdk_pixbuf_get_height (pixbuf);
|
||
width = gdk_pixbuf_get_width (pixbuf);
|
||
|
||
TIFFSetField (tiff, TIFFTAG_IMAGEWIDTH, width);
|
||
TIFFSetField (tiff, TIFFTAG_IMAGELENGTH, height);
|
||
TIFFSetField (tiff, TIFFTAG_BITSPERSAMPLE, 8);
|
||
TIFFSetField (tiff, TIFFTAG_SAMPLESPERPIXEL, has_alpha ? 4 : 3);
|
||
TIFFSetField (tiff, TIFFTAG_ROWSPERSTRIP, height);
|
||
|
||
if (has_alpha)
|
||
TIFFSetField (tiff, TIFFTAG_EXTRASAMPLES, 1, alpha_samples);
|
||
|
||
TIFFSetField (tiff, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
|
||
TIFFSetField (tiff, TIFFTAG_FILLORDER, FILLORDER_MSB2LSB);
|
||
TIFFSetField (tiff, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
|
||
|
||
for (y = 0; y < height; y++) {
|
||
if (TIFFWriteScanline (tiff, pixels + y * rowstride, y, 0) == -1 ||
|
||
global_error)
|
||
break;
|
||
}
|
||
|
||
if (global_error) {
|
||
tiff_set_error (error,
|
||
GDK_PIXBUF_ERROR_FAILED,
|
||
_("Failed to write TIFF data"));
|
||
|
||
TIFFClose (tiff);
|
||
|
||
free_save_context (context);
|
||
tiff_pop_handlers ();
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
TIFFClose (tiff);
|
||
if (global_error) {
|
||
tiff_set_error (error,
|
||
GDK_PIXBUF_ERROR_FAILED,
|
||
_("TIFFClose operation failed"));
|
||
|
||
free_save_context (context);
|
||
tiff_pop_handlers ();
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
tiff_pop_handlers ();
|
||
|
||
/* Now call the callback */
|
||
retval = save_func (context->buffer, context->used, error, user_data);
|
||
|
||
free_save_context (context);
|
||
|
||
return retval;
|
||
}
|
||
|
||
static gboolean
|
||
save_to_file_cb (const gchar *buf,
|
||
gsize count,
|
||
GError **error,
|
||
gpointer data)
|
||
{
|
||
gint bytes;
|
||
|
||
while (count > 0) {
|
||
bytes = fwrite (buf, sizeof (gchar), count, (FILE *) data);
|
||
if (bytes <= 0)
|
||
break;
|
||
count -= bytes;
|
||
buf += bytes;
|
||
}
|
||
|
||
if (count) {
|
||
g_set_error_literal (error,
|
||
GDK_PIXBUF_ERROR,
|
||
GDK_PIXBUF_ERROR_FAILED,
|
||
_("Couldn't write to TIFF file"));
|
||
return FALSE;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static gboolean
|
||
gdk_pixbuf__tiff_image_save (FILE *f,
|
||
GdkPixbuf *pixbuf,
|
||
gchar **keys,
|
||
gchar **values,
|
||
GError **error)
|
||
{
|
||
return gdk_pixbuf__tiff_image_save_to_callback (save_to_file_cb,
|
||
f, pixbuf, keys,
|
||
values, error);
|
||
}
|
||
|
||
#ifndef INCLUDE_tiff
|
||
#define MODULE_ENTRY(function) G_MODULE_EXPORT void function
|
||
#else
|
||
#define MODULE_ENTRY(function) void _gdk_pixbuf__tiff_ ## function
|
||
#endif
|
||
|
||
MODULE_ENTRY (fill_vtable) (GdkPixbufModule *module)
|
||
{
|
||
module->load = gdk_pixbuf__tiff_image_load;
|
||
module->begin_load = gdk_pixbuf__tiff_image_begin_load;
|
||
module->stop_load = gdk_pixbuf__tiff_image_stop_load;
|
||
module->load_increment = gdk_pixbuf__tiff_image_load_increment;
|
||
module->save = gdk_pixbuf__tiff_image_save;
|
||
module->save_to_callback = gdk_pixbuf__tiff_image_save_to_callback;
|
||
}
|
||
|
||
MODULE_ENTRY (fill_info) (GdkPixbufFormat *info)
|
||
{
|
||
static GdkPixbufModulePattern signature[] = {
|
||
{ "MM \x2a", " z ", 100 },
|
||
{ "II\x2a ", " z", 100 },
|
||
{ NULL, NULL, 0 }
|
||
};
|
||
static gchar * mime_types[] = {
|
||
"image/tiff",
|
||
NULL
|
||
};
|
||
static gchar * extensions[] = {
|
||
"tiff",
|
||
"tif",
|
||
NULL
|
||
};
|
||
|
||
info->name = "tiff";
|
||
info->signature = signature;
|
||
info->description = N_("The TIFF image format");
|
||
info->mime_types = mime_types;
|
||
info->extensions = extensions;
|
||
/* not threadsafe, due to the error handler handling */
|
||
info->flags = GDK_PIXBUF_FORMAT_WRITABLE;
|
||
info->license = "LGPL";
|
||
}
|