\f
-/* There's no user data for the error handlers, so we just have to
- * put a big-ass lock on the whole TIFF loader
- */
-G_LOCK_DEFINE_STATIC (tiff_loader);
static char *global_error = NULL;
static TIFFErrorHandler orig_error_handler = NULL;
static TIFFErrorHandler orig_warning_handler = NULL;
g_free (pixels);
}
+#if TIFFLIB_VERSION >= 20031226
static gboolean tifflibversion (int *major, int *minor, int *revision)
{
if (sscanf (TIFFGetVersion(),
return TRUE;
}
+#endif
static GdkPixbuf *
tiff_image_parse (TIFF *tiff, TiffContext *context, GError **error)
return NULL;
}
- G_UNLOCK (tiff_loader);
- if (context)
+ if (context && context->prepare_func)
(* context->prepare_func) (pixbuf, NULL, context->user_data);
- G_LOCK (tiff_loader);
#if TIFFLIB_VERSION >= 20031226
if (tifflibversion(&major, &minor, &revision) && major == 3 &&
_TIFFfree (rast);
}
- G_UNLOCK (tiff_loader);
- if (context)
+ if (context && context->update_func)
(* context->update_func) (pixbuf, 0, 0, width, height, context->user_data);
- G_LOCK (tiff_loader);
return pixbuf;
}
g_return_val_if_fail (f != NULL, NULL);
- G_LOCK (tiff_loader);
-
tiff_push_handlers ();
fd = fileno (f);
_("Failed to open TIFF image"));
tiff_pop_handlers ();
- G_UNLOCK (tiff_loader);
return NULL;
}
tiff_pop_handlers ();
- G_UNLOCK (tiff_loader);
-
return pixbuf;
}
}
static tsize_t
-tiff_read (thandle_t handle, tdata_t buf, tsize_t size)
+tiff_load_read (thandle_t handle, tdata_t buf, tsize_t size)
{
TiffContext *context = (TiffContext *)handle;
}
static tsize_t
-tiff_write (thandle_t handle, tdata_t buf, tsize_t size)
+tiff_load_write (thandle_t handle, tdata_t buf, tsize_t size)
{
return -1;
}
static toff_t
-tiff_seek (thandle_t handle, toff_t offset, int whence)
+tiff_load_seek (thandle_t handle, toff_t offset, int whence)
{
TiffContext *context = (TiffContext *)handle;
switch (whence) {
case SEEK_SET:
- if (offset > context->used || offset < 0)
+ if (offset > context->used)
return -1;
context->pos = offset;
break;
break;
default:
return -1;
- break;
}
return context->pos;
}
static int
-tiff_close (thandle_t context)
+tiff_load_close (thandle_t context)
{
return 0;
}
static toff_t
-tiff_size (thandle_t handle)
+tiff_load_size (thandle_t handle)
{
TiffContext *context = (TiffContext *)handle;
}
static int
-tiff_map_file (thandle_t handle, tdata_t *buf, toff_t *size)
+tiff_load_map_file (thandle_t handle, tdata_t *buf, toff_t *size)
{
TiffContext *context = (TiffContext *)handle;
}
static void
-tiff_unmap_file (thandle_t handle, tdata_t data, toff_t offset)
+tiff_load_unmap_file (thandle_t handle, tdata_t data, toff_t offset)
{
}
g_return_val_if_fail (data != NULL, FALSE);
- G_LOCK (tiff_loader);
-
tiff_push_handlers ();
tiff = TIFFClientOpen ("libtiff-pixbuf", "r", data,
- tiff_read, tiff_write,
- tiff_seek, tiff_close,
- tiff_size,
- tiff_map_file, tiff_unmap_file);
+ 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,
tiff_pop_handlers ();
- G_UNLOCK (tiff_loader);
-
return retval;
}
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 (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);
+}
+
void
MODULE_ENTRY (tiff, fill_vtable) (GdkPixbufModule *module)
{
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;
}
void
info->description = N_("The TIFF image format");
info->mime_types = mime_types;
info->extensions = extensions;
- info->flags = 0;
+ /* not threadsafe, due to the error handler handling */
+ info->flags = GDK_PIXBUF_FORMAT_WRITABLE;
info->license = "LGPL";
}
projects / ~andy / gtk / blobdiff