summaryrefslogtreecommitdiffstats
path: root/plug-ins/common/file-sunras.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:30:19 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:30:19 +0000
commit5c1676dfe6d2f3c837a5e074117b45613fd29a72 (patch)
treecbffb45144febf451e54061db2b21395faf94bfe /plug-ins/common/file-sunras.c
parentInitial commit. (diff)
downloadgimp-5c1676dfe6d2f3c837a5e074117b45613fd29a72.tar.xz
gimp-5c1676dfe6d2f3c837a5e074117b45613fd29a72.zip
Adding upstream version 2.10.34.upstream/2.10.34upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plug-ins/common/file-sunras.c')
-rw-r--r--plug-ins/common/file-sunras.c1784
1 files changed, 1784 insertions, 0 deletions
diff --git a/plug-ins/common/file-sunras.c b/plug-ins/common/file-sunras.c
new file mode 100644
index 0000000..62928cf
--- /dev/null
+++ b/plug-ins/common/file-sunras.c
@@ -0,0 +1,1784 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ * SUN raster reading and writing code Copyright (C) 1996 Peter Kirchgessner
+ * (email: peter@kirchgessner.net, WWW: http://www.kirchgessner.net)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+/* This program was written using pages 625-629 of the book
+ * "Encyclopedia of Graphics File Formats", Murray/van Ryper,
+ * O'Reilly & Associates Inc.
+ * Bug reports or suggestions should be e-mailed to peter@kirchgessner.net
+ */
+
+/* Event history:
+ * V 1.00, PK, 25-Jul-96: First try
+ * V 1.90, PK, 15-Mar-97: Upgrade to work with GIMP V0.99
+ * V 1.91, PK, 05-Apr-97: Return all arguments, even in case of an error
+ * V 1.92, PK, 18-May-97: Ignore EOF-error on reading image data
+ * V 1.93, PK, 05-Oct-97: Parse rc file
+ * V 1.94, PK, 12-Oct-97: No progress bars for non-interactive mode
+ * V 1.95, nn, 20-Dec-97: Initialize some variable
+ * V 1.96, PK, 21-Nov-99: Internationalization
+ * V 1.97, PK, 20-Dec-00: Recognize extensions .rs and .ras too
+ */
+
+#include "config.h"
+
+#include <errno.h>
+#include <string.h>
+
+#include <glib/gstdio.h>
+
+#include <libgimp/gimp.h>
+#include <libgimp/gimpui.h>
+
+#include "libgimp/stdplugins-intl.h"
+
+
+#define LOAD_PROC "file-sunras-load"
+#define SAVE_PROC "file-sunras-save"
+#define PLUG_IN_BINARY "file-sunras"
+#define PLUG_IN_ROLE "gimp-file-sunras"
+
+
+typedef int WRITE_FUN(void*,size_t,size_t,FILE*);
+
+typedef gulong L_CARD32;
+typedef gushort L_CARD16;
+typedef guchar L_CARD8;
+
+/* Fileheader of SunRaster files */
+typedef struct
+{
+ L_CARD32 l_ras_magic; /* Magic Number */
+ L_CARD32 l_ras_width; /* Width */
+ L_CARD32 l_ras_height; /* Height */
+ L_CARD32 l_ras_depth; /* Number of bits per pixel (1,8,24,32) */
+ L_CARD32 l_ras_length; /* Length of image data (but may also be 0) */
+ L_CARD32 l_ras_type; /* Encoding */
+ L_CARD32 l_ras_maptype; /* Type of colormap */
+ L_CARD32 l_ras_maplength;/* Number of bytes for colormap */
+} L_SUNFILEHEADER;
+
+/* Sun-raster magic */
+#define RAS_MAGIC 0x59a66a95
+
+#define RAS_TYPE_STD 1 /* Standard uncompressed format */
+#define RAS_TYPE_RLE 2 /* Runlength compression format */
+
+typedef struct
+{
+ gint val; /* The value that is to be repeated */
+ gint n; /* How many times it is repeated */
+} RLEBUF;
+
+
+/* Declare some local functions.
+ */
+static void query (void);
+static void run (const gchar *name,
+ gint nparams,
+ const GimpParam *param,
+ gint *nreturn_vals,
+ GimpParam **return_vals);
+
+static gint32 load_image (const gchar *filename,
+ GError **error);
+static gboolean save_image (const gchar *filename,
+ gint32 image_ID,
+ gint32 drawable_ID,
+ GError **error);
+
+static void set_color_table (gint32 image_ID,
+ L_SUNFILEHEADER *sunhdr,
+ const guchar *suncolmap);
+static gint32 create_new_image (const gchar *filename,
+ guint width,
+ guint height,
+ GimpImageBaseType type,
+ gint32 *layer_ID,
+ GeglBuffer **buffer);
+
+static gint32 load_sun_d1 (const gchar *filename,
+ FILE *ifp,
+ L_SUNFILEHEADER *sunhdr,
+ guchar *suncolmap);
+static gint32 load_sun_d8 (const gchar *filename,
+ FILE *ifp,
+ L_SUNFILEHEADER *sunhdr,
+ guchar *suncolmap);
+static gint32 load_sun_d24 (const gchar *filename,
+ FILE *ifp,
+ L_SUNFILEHEADER *sunhdr,
+ guchar *suncolmap);
+static gint32 load_sun_d32 (const gchar *filename,
+ FILE *ifp,
+ L_SUNFILEHEADER *sunhdr,
+ guchar *suncolmap);
+
+static L_CARD32 read_card32 (FILE *ifp,
+ int *err);
+
+static void write_card32 (FILE *ofp,
+ L_CARD32 c);
+
+static void byte2bit (guchar *byteline,
+ int width,
+ guchar *bitline,
+ gboolean invert);
+
+static void rle_startread (FILE *ifp);
+static int rle_fread (char *ptr,
+ int sz,
+ int nelem,
+ FILE *ifp);
+static int rle_fgetc (FILE *ifp);
+#define rle_getc(fp) ((rlebuf.n > 0) ? (rlebuf.n)--,rlebuf.val : rle_fgetc (fp))
+
+static void rle_startwrite (FILE *ofp);
+static int rle_fwrite (char *ptr,
+ int sz,
+ int nelem,
+ FILE *ofp);
+static int rle_fputc (int val,
+ FILE *ofp);
+static int rle_putrun (int n,
+ int val,
+ FILE *ofp);
+static void rle_endwrite (FILE *ofp);
+#define rle_putc rle_fputc
+
+static void read_sun_header (FILE *ifp,
+ L_SUNFILEHEADER *sunhdr);
+static void write_sun_header (FILE *ofp,
+ L_SUNFILEHEADER *sunhdr);
+static void read_sun_cols (FILE *ifp,
+ L_SUNFILEHEADER *sunhdr,
+ guchar *colormap);
+static void write_sun_cols (FILE *ofp,
+ L_SUNFILEHEADER *sunhdr,
+ guchar *colormap);
+
+static gint save_index (FILE *ofp,
+ gint32 image_ID,
+ gint32 drawable_ID,
+ gboolean grey,
+ gboolean rle);
+static gint save_rgb (FILE *ofp,
+ gint32 image_ID,
+ gint32 drawable_ID,
+ gboolean rle);
+
+static gboolean save_dialog (void);
+
+/* Portability kludge */
+static int my_fwrite (void *ptr,
+ int size,
+ int nmemb,
+ FILE *stream);
+
+
+static int read_msb_first = 1;
+static RLEBUF rlebuf;
+
+
+const GimpPlugInInfo PLUG_IN_INFO =
+{
+ NULL, /* init_proc */
+ NULL, /* quit_proc */
+ query, /* query_proc */
+ run, /* run_proc */
+};
+
+
+/* Export info */
+typedef struct
+{
+ gboolean rle; /* rle or standard */
+} SUNRASSaveVals;
+
+
+static SUNRASSaveVals psvals =
+{
+ TRUE /* rle */
+};
+
+
+MAIN ()
+
+
+static void
+query (void)
+{
+ static const GimpParamDef load_args[] =
+ {
+ { GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
+ { GIMP_PDB_STRING, "filename", "The name of the file to load" },
+ { GIMP_PDB_STRING, "raw-filename", "The name of the file to load" }
+ };
+
+ static const GimpParamDef load_return_vals[] =
+ {
+ { GIMP_PDB_IMAGE, "image", "Output image" }
+ };
+
+ static const GimpParamDef save_args[] =
+ {
+ { GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
+ { GIMP_PDB_IMAGE, "image", "Input image" },
+ { GIMP_PDB_DRAWABLE, "drawable", "Drawable to export" },
+ { GIMP_PDB_STRING, "filename", "The name of the file to export the image in" },
+ { GIMP_PDB_STRING, "raw-filename", "The name of the file to export the image in" },
+ { GIMP_PDB_INT32, "rle", "Specify non-zero for rle output, zero for standard output" }
+ };
+
+ gimp_install_procedure (LOAD_PROC,
+ "load file of the SunRaster file format",
+ "load file of the SunRaster file format",
+ "Peter Kirchgessner",
+ "Peter Kirchgessner",
+ "1996",
+ N_("SUN Rasterfile image"),
+ NULL,
+ GIMP_PLUGIN,
+ G_N_ELEMENTS (load_args),
+ G_N_ELEMENTS (load_return_vals),
+ load_args, load_return_vals);
+
+ gimp_register_file_handler_mime (LOAD_PROC, "image/x-sun-raster");
+ gimp_register_magic_load_handler (LOAD_PROC,
+ "im1,im8,im24,im32,rs,ras,sun",
+ "",
+ "0,long,0x59a66a95");
+
+ gimp_install_procedure (SAVE_PROC,
+ "export file in the SunRaster file format",
+ "SUNRAS exporting handles all image types except "
+ "those with alpha channels.",
+ "Peter Kirchgessner",
+ "Peter Kirchgessner",
+ "1996",
+ N_("SUN Rasterfile image"),
+ "RGB, GRAY, INDEXED",
+ GIMP_PLUGIN,
+ G_N_ELEMENTS (save_args), 0,
+ save_args, NULL);
+
+ gimp_register_file_handler_mime (SAVE_PROC, "image/x-sun-raster");
+ gimp_register_save_handler (SAVE_PROC,
+ "im1,im8,im24,im32,rs,ras,sun", "");
+}
+
+
+static void
+run (const gchar *name,
+ gint nparams,
+ const GimpParam *param,
+ gint *nreturn_vals,
+ GimpParam **return_vals)
+{
+ static GimpParam values[2];
+ GimpRunMode run_mode;
+ GimpPDBStatusType status = GIMP_PDB_SUCCESS;
+ gint32 image_ID;
+ gint32 drawable_ID;
+ GimpExportReturn export = GIMP_EXPORT_CANCEL;
+ GError *error = NULL;
+
+ run_mode = param[0].data.d_int32;
+
+ INIT_I18N ();
+ gegl_init (NULL, NULL);
+
+ *nreturn_vals = 1;
+ *return_vals = values;
+
+ values[0].type = GIMP_PDB_STATUS;
+ values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
+
+ if (strcmp (name, LOAD_PROC) == 0)
+ {
+ image_ID = load_image (param[1].data.d_string, &error);
+
+ if (image_ID != -1)
+ {
+ *nreturn_vals = 2;
+ values[1].type = GIMP_PDB_IMAGE;
+ values[1].data.d_image = image_ID;
+ }
+ else
+ {
+ status = GIMP_PDB_EXECUTION_ERROR;
+ }
+ }
+ else if (strcmp (name, SAVE_PROC) == 0)
+ {
+ image_ID = param[1].data.d_int32;
+ drawable_ID = param[2].data.d_int32;
+
+ /* eventually export the image */
+ switch (run_mode)
+ {
+ case GIMP_RUN_INTERACTIVE:
+ case GIMP_RUN_WITH_LAST_VALS:
+ gimp_ui_init (PLUG_IN_BINARY, FALSE);
+
+ export = gimp_export_image (&image_ID, &drawable_ID, "SUNRAS",
+ GIMP_EXPORT_CAN_HANDLE_RGB |
+ GIMP_EXPORT_CAN_HANDLE_GRAY |
+ GIMP_EXPORT_CAN_HANDLE_INDEXED);
+
+ if (export == GIMP_EXPORT_CANCEL)
+ {
+ values[0].data.d_status = GIMP_PDB_CANCEL;
+ return;
+ }
+ break;
+ default:
+ break;
+ }
+
+ switch (run_mode)
+ {
+ case GIMP_RUN_INTERACTIVE:
+ /* Possibly retrieve data */
+ gimp_get_data (SAVE_PROC, &psvals);
+
+ /* First acquire information with a dialog */
+ if (! save_dialog ())
+ status = GIMP_PDB_CANCEL;
+ break;
+
+ case GIMP_RUN_NONINTERACTIVE:
+ /* Make sure all the arguments are there! */
+ if (nparams != 6)
+ {
+ status = GIMP_PDB_CALLING_ERROR;
+ }
+ else
+ {
+ psvals.rle = (param[5].data.d_int32) ? TRUE : FALSE;
+ }
+ break;
+
+ case GIMP_RUN_WITH_LAST_VALS:
+ /* Possibly retrieve data */
+ gimp_get_data (SAVE_PROC, &psvals);
+ break;
+
+ default:
+ break;
+ }
+
+ if (status == GIMP_PDB_SUCCESS)
+ {
+ if (save_image (param[3].data.d_string, image_ID, drawable_ID,
+ &error))
+ {
+ /* Store psvals data */
+ gimp_set_data (SAVE_PROC, &psvals, sizeof (SUNRASSaveVals));
+ }
+ else
+ {
+ status = GIMP_PDB_EXECUTION_ERROR;
+ }
+ }
+
+ if (export == GIMP_EXPORT_EXPORT)
+ gimp_image_delete (image_ID);
+ }
+ else
+ {
+ status = GIMP_PDB_CALLING_ERROR;
+ }
+
+ if (status != GIMP_PDB_SUCCESS && error)
+ {
+ *nreturn_vals = 2;
+ values[1].type = GIMP_PDB_STRING;
+ values[1].data.d_string = error->message;
+ }
+
+ values[0].data.d_status = status;
+}
+
+
+static gint32
+load_image (const gchar *filename,
+ GError **error)
+{
+ gint32 image_ID;
+ FILE *ifp;
+ L_SUNFILEHEADER sunhdr;
+ guchar *suncolmap = NULL;
+
+ gimp_progress_init_printf (_("Opening '%s'"),
+ gimp_filename_to_utf8 (filename));
+
+ ifp = g_fopen (filename, "rb");
+ if (!ifp)
+ {
+ g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
+ _("Could not open '%s' for reading: %s"),
+ gimp_filename_to_utf8 (filename), g_strerror (errno));
+ return -1;
+ }
+
+ read_msb_first = 1; /* SUN raster is always most significant byte first */
+
+ read_sun_header (ifp, &sunhdr);
+ if (sunhdr.l_ras_magic != RAS_MAGIC)
+ {
+ g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
+ _("Could not open '%s' as SUN-raster-file"),
+ gimp_filename_to_utf8 (filename));
+ fclose (ifp);
+ return -1;
+ }
+
+ if (sunhdr.l_ras_type > 5)
+ {
+ g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
+ "%s",
+ _("The type of this SUN-rasterfile is not supported"));
+ fclose (ifp);
+ return -1;
+ }
+
+ if (sunhdr.l_ras_maplength > (256 * 3))
+ {
+ g_message ("Map lengths greater than 256 entries are unsupported by GIMP.");
+ gimp_quit ();
+ }
+
+ /* Is there a RGB colormap ? */
+ if ((sunhdr.l_ras_maptype == 1) && (sunhdr.l_ras_maplength > 0))
+ {
+ suncolmap = g_new (guchar, sunhdr.l_ras_maplength);
+
+ read_sun_cols (ifp, &sunhdr, suncolmap);
+#ifdef DEBUG
+ {
+ int j, ncols;
+ printf ("File %s\n",filename);
+ ncols = sunhdr.l_ras_maplength/3;
+ for (j=0; j < ncols; j++)
+ printf ("Entry 0x%08x: 0x%04x, 0x%04x, 0x%04x\n",
+ j,suncolmap[j],suncolmap[j+ncols],suncolmap[j+2*ncols]);
+ }
+#endif
+ if (sunhdr.l_ras_magic != RAS_MAGIC)
+ {
+ g_message (_("Could not read color entries from '%s'"),
+ gimp_filename_to_utf8 (filename));
+ fclose (ifp);
+ g_free (suncolmap);
+ return -1;
+ }
+ }
+ else if (sunhdr.l_ras_maplength > 0)
+ {
+ g_message (_("Type of colormap not supported"));
+ fseek (ifp, (sizeof (L_SUNFILEHEADER)/sizeof (L_CARD32))
+ *4 + sunhdr.l_ras_maplength, SEEK_SET);
+ }
+
+ if (sunhdr.l_ras_width <= 0)
+ {
+ g_message (_("'%s':\nNo image width specified"),
+ gimp_filename_to_utf8 (filename));
+ fclose (ifp);
+ return -1;
+ }
+
+ if (sunhdr.l_ras_width > GIMP_MAX_IMAGE_SIZE)
+ {
+ g_message (_("'%s':\nImage width is larger than GIMP can handle"),
+ gimp_filename_to_utf8 (filename));
+ fclose (ifp);
+ return -1;
+ }
+
+ if (sunhdr.l_ras_height <= 0)
+ {
+ g_message (_("'%s':\nNo image height specified"),
+ gimp_filename_to_utf8 (filename));
+ fclose (ifp);
+ return -1;
+ }
+
+ if (sunhdr.l_ras_height > GIMP_MAX_IMAGE_SIZE)
+ {
+ g_message (_("'%s':\nImage height is larger than GIMP can handle"),
+ gimp_filename_to_utf8 (filename));
+ fclose (ifp);
+ return -1;
+ }
+
+ switch (sunhdr.l_ras_depth)
+ {
+ case 1: /* bitmap */
+ image_ID = load_sun_d1 (filename, ifp, &sunhdr, suncolmap);
+ break;
+
+ case 8: /* 256 colors */
+ image_ID = load_sun_d8 (filename, ifp, &sunhdr, suncolmap);
+ break;
+
+ case 24: /* True color */
+ image_ID = load_sun_d24 (filename, ifp, &sunhdr, suncolmap);
+ break;
+
+ case 32: /* True color with extra byte */
+ image_ID = load_sun_d32 (filename, ifp, &sunhdr, suncolmap);
+ break;
+
+ default:
+ image_ID = -1;
+ break;
+ }
+ gimp_progress_update (1.0);
+
+ fclose (ifp);
+
+ g_free (suncolmap);
+
+ if (image_ID == -1)
+ {
+ g_message (_("This image depth is not supported"));
+ return -1;
+ }
+
+ return image_ID;
+}
+
+
+static gboolean
+save_image (const gchar *filename,
+ gint32 image_ID,
+ gint32 drawable_ID,
+ GError **error)
+{
+ FILE *ofp;
+ GimpImageType drawable_type;
+ gboolean retval;
+
+ drawable_type = gimp_drawable_type (drawable_ID);
+
+ /* Make sure we're not exporting an image with an alpha channel */
+ if (gimp_drawable_has_alpha (drawable_ID))
+ {
+ g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
+ _("SUNRAS export cannot handle images with alpha channels"));
+ return FALSE;
+ }
+
+ switch (drawable_type)
+ {
+ case GIMP_INDEXED_IMAGE:
+ case GIMP_GRAY_IMAGE:
+ case GIMP_RGB_IMAGE:
+ break;
+ default:
+ g_message (_("Can't operate on unknown image types"));
+ return FALSE;
+ break;
+ }
+
+ gimp_progress_init_printf (_("Exporting '%s'"),
+ gimp_filename_to_utf8 (filename));
+
+ /* Open the output file. */
+ ofp = g_fopen (filename, "wb");
+ if (! ofp)
+ {
+ g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
+ _("Could not open '%s' for writing: %s"),
+ gimp_filename_to_utf8 (filename), g_strerror (errno));
+ return FALSE;
+ }
+
+ if (drawable_type == GIMP_INDEXED_IMAGE)
+ retval = save_index (ofp,image_ID, drawable_ID, FALSE, psvals.rle);
+ else if (drawable_type == GIMP_GRAY_IMAGE)
+ retval = save_index (ofp,image_ID, drawable_ID, TRUE, psvals.rle);
+ else if (drawable_type == GIMP_RGB_IMAGE)
+ retval = save_rgb (ofp,image_ID, drawable_ID, psvals.rle);
+ else
+ retval = FALSE;
+
+ fclose (ofp);
+
+ return retval;
+}
+
+
+static L_CARD32
+read_card32 (FILE *ifp,
+ gint *err)
+{
+ L_CARD32 c;
+
+ if (read_msb_first)
+ {
+ c = (((L_CARD32)(getc (ifp))) << 24);
+ c |= (((L_CARD32)(getc (ifp))) << 16);
+ c |= (((L_CARD32)(getc (ifp))) << 8);
+ c |= ((L_CARD32)(*err = getc (ifp)));
+ }
+ else
+ {
+ c = ((L_CARD32)(getc (ifp)));
+ c |= (((L_CARD32)(getc (ifp))) << 8);
+ c |= (((L_CARD32)(getc (ifp))) << 16);
+ c |= (((L_CARD32)(*err = getc (ifp))) << 24);
+ }
+
+ *err = (*err < 0);
+
+ return c;
+}
+
+
+static void
+write_card32 (FILE *ofp,
+ L_CARD32 c)
+{
+ putc ((int)((c >> 24) & 0xff), ofp);
+ putc ((int)((c >> 16) & 0xff), ofp);
+ putc ((int)((c >> 8) & 0xff), ofp);
+ putc ((int)((c) & 0xff), ofp);
+}
+
+
+/* Convert n bytes of 0/1 to a line of bits */
+static void
+byte2bit (guchar *byteline,
+ gint width,
+ guchar *bitline,
+ gboolean invert)
+{
+ guchar bitval;
+ guchar rest[8];
+
+ while (width >= 8)
+ {
+ bitval = 0;
+ if (*(byteline++)) bitval |= 0x80;
+ if (*(byteline++)) bitval |= 0x40;
+ if (*(byteline++)) bitval |= 0x20;
+ if (*(byteline++)) bitval |= 0x10;
+ if (*(byteline++)) bitval |= 0x08;
+ if (*(byteline++)) bitval |= 0x04;
+ if (*(byteline++)) bitval |= 0x02;
+ if (*(byteline++)) bitval |= 0x01;
+ *(bitline++) = invert ? ~bitval : bitval;
+ width -= 8;
+ }
+ if (width > 0)
+ {
+ memset (rest, 0, 8);
+ memcpy (rest, byteline, width);
+ bitval = 0;
+ byteline = rest;
+ if (*(byteline++)) bitval |= 0x80;
+ if (*(byteline++)) bitval |= 0x40;
+ if (*(byteline++)) bitval |= 0x20;
+ if (*(byteline++)) bitval |= 0x10;
+ if (*(byteline++)) bitval |= 0x08;
+ if (*(byteline++)) bitval |= 0x04;
+ if (*(byteline++)) bitval |= 0x02;
+ *bitline = invert ? ~bitval : bitval;
+ }
+}
+
+
+/* Start reading Runlength Encoded Data */
+static void
+rle_startread (FILE *ifp)
+{
+ /* Clear RLE-buffer */
+ rlebuf.val = rlebuf.n = 0;
+}
+
+
+/* Read uncompressed elements from RLE-stream */
+static gint
+rle_fread (gchar *ptr,
+ gint sz,
+ gint nelem,
+ FILE *ifp)
+{
+ int elem_read, cnt, val, err = 0;
+
+ for (elem_read = 0; elem_read < nelem; elem_read++)
+ {
+ for (cnt = 0; cnt < sz; cnt++)
+ {
+ val = rle_getc (ifp);
+
+ if (val < 0)
+ {
+ err = 1;
+ break;
+ }
+
+ *(ptr++) = (char)val;
+ }
+
+ if (err)
+ break;
+ }
+
+ return elem_read;
+}
+
+
+/* Get one byte of uncompressed data from RLE-stream */
+static gint
+rle_fgetc (FILE *ifp)
+{
+ int flag, runcnt, runval;
+
+ if (rlebuf.n > 0) /* Something in the buffer ? */
+ {
+ (rlebuf.n)--;
+ return rlebuf.val;
+ }
+
+ /* Nothing in the buffer. We have to read something */
+ if ((flag = getc (ifp)) < 0) return -1;
+ if (flag != 0x0080) return flag; /* Single byte run ? */
+
+ if ((runcnt = getc (ifp)) < 0) return -1;
+ if (runcnt == 0) return 0x0080; /* Single 0x80 ? */
+
+ /* The run */
+ if ((runval = getc (ifp)) < 0) return -1;
+ rlebuf.n = runcnt;
+ rlebuf.val = runval;
+
+ return runval;
+}
+
+
+/* Start writing Runlength Encoded Data */
+static void
+rle_startwrite (FILE *ofp)
+{
+ /* Clear RLE-buffer */
+ rlebuf.val = rlebuf.n = 0;
+}
+
+
+/* Write uncompressed elements to RLE-stream */
+static gint
+rle_fwrite (gchar *ptr,
+ gint sz,
+ gint nelem,
+ FILE *ofp)
+{
+ int elem_write, cnt, val, err = 0;
+ guchar *pixels = (unsigned char *)ptr;
+
+ for (elem_write = 0; elem_write < nelem; elem_write++)
+ {
+ for (cnt = 0; cnt < sz; cnt++)
+ {
+ val = rle_fputc (*(pixels++), ofp);
+ if (val < 0)
+ {
+ err = 1;
+ break;
+ }
+ }
+
+ if (err)
+ break;
+ }
+
+ return elem_write;
+}
+
+
+/* Write uncompressed character to RLE-stream */
+static gint
+rle_fputc (gint val,
+ FILE *ofp)
+{
+ int retval;
+
+ if (rlebuf.n == 0) /* Nothing in the buffer ? Save the value */
+ {
+ rlebuf.n = 1;
+ rlebuf.val = val;
+
+ return val;
+ }
+
+ /* Something in the buffer */
+
+ if (rlebuf.val == val) /* Same value in the buffer ? */
+ {
+ (rlebuf.n)++;
+ if (rlebuf.n == 257) /* Can not be encoded in a single run ? */
+ {
+ retval = rle_putrun (256, rlebuf.val, ofp);
+ if (retval < 0)
+ return retval;
+
+ rlebuf.n -= 256;
+ }
+
+ return val;
+ }
+
+ /* Something different in the buffer ? Write out the run */
+
+ retval = rle_putrun (rlebuf.n, rlebuf.val, ofp);
+ if (retval < 0)
+ return retval;
+
+ /* Save the new value */
+ rlebuf.n = 1;
+ rlebuf.val = val;
+
+ return val;
+}
+
+
+/* Write out a run with 0 < n < 257 */
+static gint
+rle_putrun (gint n,
+ gint val,
+ FILE *ofp)
+{
+ int retval, flag = 0x80;
+
+ /* Useful to write a 3 byte run ? */
+ if ((n > 2) || ((n == 2) && (val == flag)))
+ {
+ putc (flag, ofp);
+ putc (n-1, ofp);
+ retval = putc (val, ofp);
+ }
+ else if (n == 2) /* Write two single runs (could not be value 0x80) */
+ {
+ putc (val, ofp);
+ retval = putc (val, ofp);
+ }
+ else /* Write a single run */
+ {
+ if (val == flag)
+ retval = putc (flag, ofp), putc (0x00, ofp);
+ else
+ retval = putc (val, ofp);
+ }
+
+ return (retval < 0) ? retval : val;
+}
+
+
+/* End writing Runlength Encoded Data */
+static void
+rle_endwrite (FILE *ofp)
+{
+ if (rlebuf.n > 0)
+ {
+ rle_putrun (rlebuf.n, rlebuf.val, ofp);
+ rlebuf.val = rlebuf.n = 0; /* Clear RLE-buffer */
+ }
+}
+
+
+static void
+read_sun_header (FILE *ifp,
+ L_SUNFILEHEADER *sunhdr)
+{
+ int j, err;
+ L_CARD32 *cp;
+
+ cp = (L_CARD32 *)sunhdr;
+
+ /* Read in all 32-bit values of the header and check for byte order */
+ for (j = 0; j < sizeof (L_SUNFILEHEADER) / sizeof(sunhdr->l_ras_magic); j++)
+ {
+ *(cp++) = read_card32 (ifp, &err);
+ if (err)
+ break;
+ }
+
+ if (err)
+ sunhdr->l_ras_magic = 0; /* Not a valid SUN-raster file */
+}
+
+
+/* Write out a SUN-fileheader */
+
+static void
+write_sun_header (FILE *ofp,
+ L_SUNFILEHEADER *sunhdr)
+{
+ int j, hdr_entries;
+ L_CARD32 *cp;
+
+ hdr_entries = sizeof (L_SUNFILEHEADER) / sizeof(sunhdr->l_ras_magic);
+
+ cp = (L_CARD32 *)sunhdr;
+
+ /* Write out all 32-bit values of the header and check for byte order */
+ for (j = 0; j < hdr_entries; j++)
+ {
+ write_card32 (ofp, *(cp++));
+ }
+}
+
+
+/* Read the sun colormap */
+
+static void
+read_sun_cols (FILE *ifp,
+ L_SUNFILEHEADER *sunhdr,
+ guchar *colormap)
+{
+ int ncols, err = 0;
+
+ /* Read in SUN-raster Colormap */
+ ncols = sunhdr->l_ras_maplength / 3;
+ if (ncols <= 0)
+ err = 1;
+ else
+ err = (fread (colormap, 3, ncols, ifp) != ncols);
+
+ if (err)
+ sunhdr->l_ras_magic = 0; /* Not a valid SUN-raster file */
+}
+
+
+/* Write a sun colormap */
+
+static void
+write_sun_cols (FILE *ofp,
+ L_SUNFILEHEADER *sunhdr,
+ guchar *colormap)
+{
+ int ncols;
+
+ ncols = sunhdr->l_ras_maplength / 3;
+ fwrite (colormap, 3, ncols, ofp);
+}
+
+
+/* Set a GIMP colortable using the sun colormap */
+
+static void
+set_color_table (gint32 image_ID,
+ L_SUNFILEHEADER *sunhdr,
+ const guchar *suncolmap)
+{
+ guchar ColorMap[256 * 3];
+ gint ncols, j;
+
+ ncols = sunhdr->l_ras_maplength / 3;
+ if (ncols <= 0)
+ return;
+
+ for (j = 0; j < MIN (ncols, 256); j++)
+ {
+ ColorMap[j * 3 + 0] = suncolmap[j];
+ ColorMap[j * 3 + 1] = suncolmap[j + ncols];
+ ColorMap[j * 3 + 2] = suncolmap[j + 2 * ncols];
+ }
+
+#ifdef DEBUG
+ printf ("Set GIMP colortable:\n");
+ for (j = 0; j < ncols; j++)
+ printf ("%3d: 0x%02x 0x%02x 0x%02x\n", j,
+ ColorMap[j*3], ColorMap[j*3+1], ColorMap[j*3+2]);
+#endif
+
+ gimp_image_set_colormap (image_ID, ColorMap, ncols);
+}
+
+
+/* Create an image. Sets layer_ID, drawable and rgn. Returns image_ID */
+static gint32
+create_new_image (const gchar *filename,
+ guint width,
+ guint height,
+ GimpImageBaseType type,
+ gint32 *layer_ID,
+ GeglBuffer **buffer)
+{
+ gint32 image_ID;
+ GimpImageType gdtype;
+
+ switch (type)
+ {
+ case GIMP_RGB:
+ gdtype = GIMP_RGB_IMAGE;
+ break;
+ case GIMP_GRAY:
+ gdtype = GIMP_GRAY_IMAGE;
+ break;
+ case GIMP_INDEXED:
+ gdtype = GIMP_INDEXED_IMAGE;
+ break;
+ default:
+ g_warning ("Unsupported image type");
+ return -1;
+ }
+
+ image_ID = gimp_image_new (width, height, type);
+ gimp_image_set_filename (image_ID, filename);
+
+ *layer_ID = gimp_layer_new (image_ID, _("Background"), width, height,
+ gdtype,
+ 100,
+ gimp_image_get_default_new_layer_mode (image_ID));
+ gimp_image_insert_layer (image_ID, *layer_ID, -1, 0);
+
+ *buffer = gimp_drawable_get_buffer (*layer_ID);
+
+ return image_ID;
+}
+
+
+/* Load SUN-raster-file with depth 1 */
+static gint32
+load_sun_d1 (const gchar *filename,
+ FILE *ifp,
+ L_SUNFILEHEADER *sunhdr,
+ guchar *suncolmap)
+{
+ int pix8;
+ int width, height, linepad, scan_lines, tile_height;
+ int i, j;
+ guchar *dest, *data;
+ gint32 layer_ID, image_ID;
+ GeglBuffer *buffer;
+ guchar bit2byte[256 * 8];
+ L_SUNFILEHEADER sun_bwhdr;
+ guchar sun_bwcolmap[6] = { 255,0,255,0,255,0 };
+ int err = 0;
+ gboolean rle = (sunhdr->l_ras_type == RAS_TYPE_RLE);
+
+ width = sunhdr->l_ras_width;
+ height = sunhdr->l_ras_height;
+
+ image_ID = create_new_image (filename, width, height, GIMP_INDEXED,
+ &layer_ID, &buffer);
+
+ tile_height = gimp_tile_height ();
+ data = g_malloc (tile_height * width);
+
+ if (suncolmap != NULL) /* Set up the specified color map */
+ {
+ set_color_table (image_ID, sunhdr, suncolmap);
+ }
+ else /* No colormap available. Set up a dummy b/w-colormap */
+ { /* Copy the original header and simulate b/w-colormap */
+ memcpy ((char *)&sun_bwhdr,(char *)sunhdr,sizeof (L_SUNFILEHEADER));
+ sun_bwhdr.l_ras_maptype = 2;
+ sun_bwhdr.l_ras_maplength = 6;
+ set_color_table (image_ID, &sun_bwhdr, sun_bwcolmap);
+ }
+
+ /* Get an array for mapping 8 bits in a byte to 8 bytes */
+ dest = bit2byte;
+ for (j = 0; j < 256; j++)
+ for (i = 7; i >= 0; i--)
+ *(dest++) = ((j & (1 << i)) != 0);
+
+ linepad = (((sunhdr->l_ras_width+7)/8) % 2); /* Check for 16bit align */
+
+ if (rle)
+ rle_startread (ifp);
+
+ dest = data;
+ scan_lines = 0;
+
+ for (i = 0; i < height; i++)
+ {
+ j = width;
+ while (j >= 8)
+ {
+ pix8 = rle ? rle_getc (ifp) : getc (ifp);
+ if (pix8 < 0) { err = 1; pix8 = 0; }
+
+ memcpy (dest, bit2byte + pix8*8, 8);
+ dest += 8;
+ j -= 8;
+ }
+
+ if (j > 0)
+ {
+ pix8 = rle ? rle_getc (ifp) : getc (ifp);
+ if (pix8 < 0) { err = 1; pix8 = 0; }
+
+ memcpy (dest, bit2byte + pix8*8, j);
+ dest += j;
+ }
+
+ if (linepad)
+ err |= ((rle ? rle_getc (ifp) : getc (ifp)) < 0);
+
+ scan_lines++;
+
+ if ((i % 20) == 0)
+ gimp_progress_update ((double)(i+1) / (double)height);
+
+ if ((scan_lines == tile_height) || ((i+1) == height))
+ {
+ gegl_buffer_set (buffer, GEGL_RECTANGLE (0, i - scan_lines + 1,
+ width, scan_lines), 0,
+ NULL, data, GEGL_AUTO_ROWSTRIDE);
+ scan_lines = 0;
+ dest = data;
+ }
+ }
+
+ g_free (data);
+
+ if (err)
+ g_message (_("EOF encountered on reading"));
+
+ g_object_unref (buffer);
+
+ return image_ID;
+}
+
+
+/* Load SUN-raster-file with depth 8 */
+
+static gint32
+load_sun_d8 (const gchar *filename,
+ FILE *ifp,
+ L_SUNFILEHEADER *sunhdr,
+ guchar *suncolmap)
+{
+ int width, height, linepad, i, j;
+ gboolean grayscale;
+ gint ncols;
+ int scan_lines, tile_height;
+ guchar *dest, *data;
+ gint32 layer_ID, image_ID;
+ GeglBuffer *buffer;
+ int err = 0;
+ gboolean rle = (sunhdr->l_ras_type == RAS_TYPE_RLE);
+
+ width = sunhdr->l_ras_width;
+ height = sunhdr->l_ras_height;
+
+ /* This could also be a grayscale image. Check it */
+ ncols = sunhdr->l_ras_maplength / 3;
+
+ grayscale = TRUE; /* Also grayscale if no colormap present */
+
+ if ((ncols > 0) && (suncolmap != NULL))
+ {
+ for (j = 0; j < ncols; j++)
+ {
+ if ((suncolmap[j] != j) ||
+ (suncolmap[j + ncols] != j) ||
+ (suncolmap[j + 2 * ncols] != j))
+ {
+ grayscale = FALSE;
+ break;
+ }
+ }
+ }
+
+ image_ID = create_new_image (filename, width, height,
+ grayscale ? GIMP_GRAY : GIMP_INDEXED,
+ &layer_ID, &buffer);
+
+ tile_height = gimp_tile_height ();
+ data = g_malloc (tile_height * width);
+
+ if (!grayscale)
+ set_color_table (image_ID, sunhdr, suncolmap);
+
+ linepad = (sunhdr->l_ras_width % 2);
+
+ if (rle)
+ rle_startread (ifp); /* Initialize RLE-buffer */
+
+ dest = data;
+ scan_lines = 0;
+
+ for (i = 0; i < height; i++)
+ {
+ memset ((char *)dest, 0, width);
+ err |= ((rle ? rle_fread ((char *)dest, 1, width, ifp)
+ : fread ((char *)dest, 1, width, ifp)) != width);
+
+ if (linepad)
+ err |= ((rle ? rle_getc (ifp) : getc (ifp)) < 0);
+
+ dest += width;
+ scan_lines++;
+
+ if ((i % 20) == 0)
+ gimp_progress_update ((double)(i+1) / (double)height);
+
+ if ((scan_lines == tile_height) || ((i+1) == height))
+ {
+ gegl_buffer_set (buffer, GEGL_RECTANGLE (0, i - scan_lines + 1,
+ width, scan_lines), 0,
+ NULL, data, GEGL_AUTO_ROWSTRIDE);
+ scan_lines = 0;
+ dest = data;
+ }
+ }
+
+ g_free (data);
+
+ if (err)
+ g_message (_("EOF encountered on reading"));
+
+ g_object_unref (buffer);
+
+ return image_ID;
+}
+
+
+/* Load SUN-raster-file with depth 24 */
+static gint32
+load_sun_d24 (const gchar *filename,
+ FILE *ifp,
+ L_SUNFILEHEADER *sunhdr,
+ guchar *suncolmap)
+{
+ guchar *dest, blue;
+ guchar *data;
+ int width, height, linepad, tile_height, scan_lines;
+ int i, j;
+ gint32 layer_ID, image_ID;
+ GeglBuffer *buffer;
+ int err = 0;
+ gboolean rle = (sunhdr->l_ras_type == RAS_TYPE_RLE);
+
+ width = sunhdr->l_ras_width;
+ height = sunhdr->l_ras_height;
+
+ image_ID = create_new_image (filename, width, height, GIMP_RGB,
+ &layer_ID, &buffer);
+
+ tile_height = gimp_tile_height ();
+ data = g_malloc (tile_height * width * 3);
+
+ linepad = ((sunhdr->l_ras_width*3) % 2);
+
+ if (rle)
+ rle_startread (ifp); /* Initialize RLE-buffer */
+
+ dest = data;
+ scan_lines = 0;
+
+ for (i = 0; i < height; i++)
+ {
+ memset ((char *)dest, 0, 3*width);
+ err |= ((rle ? rle_fread ((char *)dest, 3, width, ifp)
+ : fread ((char *)dest, 3, width, ifp)) != width);
+
+ if (linepad)
+ err |= ((rle ? rle_getc (ifp) : getc (ifp)) < 0);
+
+ if (sunhdr->l_ras_type == 3) /* RGB-format ? That is what GIMP wants */
+ {
+ dest += width * 3;
+ }
+ else /* We have BGR format. Correct it */
+ {
+ for (j = 0; j < width; j++)
+ {
+ blue = *dest;
+ *dest = *(dest+2);
+ *(dest+2) = blue;
+ dest += 3;
+ }
+ }
+
+ scan_lines++;
+
+ if ((i % 20) == 0)
+ gimp_progress_update ((double)(i + 1) / (double)height);
+
+ if ((scan_lines == tile_height) || ((i + 1) == height))
+ {
+ gegl_buffer_set (buffer, GEGL_RECTANGLE (0, i - scan_lines + 1,
+ width, scan_lines), 0,
+ NULL, data, GEGL_AUTO_ROWSTRIDE);
+ scan_lines = 0;
+ dest = data;
+ }
+ }
+
+ g_free (data);
+
+ if (err)
+ g_message (_("EOF encountered on reading"));
+
+ g_object_unref (buffer);
+
+ return image_ID;
+}
+
+
+/* Load SUN-raster-file with depth 32 */
+
+static gint32
+load_sun_d32 (const gchar *filename,
+ FILE *ifp,
+ L_SUNFILEHEADER *sunhdr,
+ guchar *suncolmap)
+{
+ guchar *dest, blue;
+ guchar *data;
+ int width, height, tile_height, scan_lines;
+ int i, j;
+ gint32 layer_ID, image_ID;
+ GeglBuffer *buffer;
+ int err = 0;
+ int cerr;
+ gboolean rle = (sunhdr->l_ras_type == RAS_TYPE_RLE);
+
+ width = sunhdr->l_ras_width;
+ height = sunhdr->l_ras_height;
+
+ /* initialize */
+
+ cerr = 0;
+
+ image_ID = create_new_image (filename, width, height, GIMP_RGB,
+ &layer_ID, &buffer);
+
+ tile_height = gimp_tile_height ();
+ data = g_malloc (tile_height * width * 3);
+
+ if (rle)
+ rle_startread (ifp); /* Initialize RLE-buffer */
+
+ dest = data;
+ scan_lines = 0;
+
+ for (i = 0; i < height; i++)
+ {
+ if (rle)
+ {
+ for (j = 0; j < width; j++)
+ {
+ rle_getc (ifp); /* Skip unused byte */
+ *(dest++) = rle_getc (ifp);
+ *(dest++) = rle_getc (ifp);
+ *(dest++) = (cerr = (rle_getc (ifp)));
+ }
+ }
+ else
+ {
+ for (j = 0; j < width; j++)
+ {
+ getc (ifp); /* Skip unused byte */
+ *(dest++) = getc (ifp);
+ *(dest++) = getc (ifp);
+ *(dest++) = (cerr = (getc (ifp)));
+ }
+ }
+ err |= (cerr < 0);
+
+ if (sunhdr->l_ras_type != 3) /* BGR format ? Correct it */
+ {
+ for (j = 0; j < width; j++)
+ {
+ dest -= 3;
+ blue = *dest;
+ *dest = *(dest+2);
+ *(dest+2) = blue;
+ }
+ dest += width*3;
+ }
+
+ scan_lines++;
+
+ if ((i % 20) == 0)
+ gimp_progress_update ((double)(i + 1) / (double)height);
+
+ if ((scan_lines == tile_height) || ((i + 1) == height))
+ {
+ gegl_buffer_set (buffer, GEGL_RECTANGLE (0, i - scan_lines + 1,
+ width, scan_lines), 0,
+ NULL, data, GEGL_AUTO_ROWSTRIDE);
+ scan_lines = 0;
+ dest = data;
+ }
+ }
+
+ g_free (data);
+
+ if (err)
+ g_message (_("EOF encountered on reading"));
+
+ g_object_unref (buffer);
+
+ return image_ID;
+}
+
+
+static gint
+save_index (FILE *ofp,
+ gint32 image_ID,
+ gint32 drawable_ID,
+ gboolean grey,
+ gboolean rle)
+{
+ int height, width, linepad, i, j;
+ int ncols, bw, is_bw, is_wb, bpl;
+ int tile_height;
+ long tmp = 0;
+ guchar *cmap, *bwline = NULL;
+ guchar *data, *src;
+ L_SUNFILEHEADER sunhdr;
+ guchar sun_colormap[256*3];
+ static guchar sun_bwmap[6] = { 0, 255, 0, 255, 0, 255 };
+ static guchar sun_wbmap[6] = { 255, 0, 255, 0, 255, 0 };
+ unsigned char *suncolmap = sun_colormap;
+ GeglBuffer *buffer;
+ const Babl *format;
+ WRITE_FUN *write_fun;
+
+ buffer = gimp_drawable_get_buffer (drawable_ID);
+
+ width = gegl_buffer_get_width (buffer);
+ height = gegl_buffer_get_height (buffer);
+
+ tile_height = gimp_tile_height ();
+
+ if (grey)
+ format = babl_format ("Y' u8");
+ else
+ format = gegl_buffer_get_format (buffer);
+
+ /* allocate a buffer for retrieving information from the buffer */
+ src = data = g_malloc (tile_height * width *
+ babl_format_get_bytes_per_pixel (format));
+
+ /* Fill SUN-color map */
+ if (grey)
+ {
+ ncols = 256;
+
+ for (j = 0; j < ncols; j++)
+ {
+ suncolmap[j] = j;
+ suncolmap[j + ncols] = j;
+ suncolmap[j + ncols * 2] = j;
+ }
+ }
+ else
+ {
+ cmap = gimp_image_get_colormap (image_ID, &ncols);
+
+ for (j = 0; j < ncols; j++)
+ {
+ suncolmap[j] = *(cmap++);
+ suncolmap[j + ncols] = *(cmap++);
+ suncolmap[j + ncols * 2] = *(cmap++);
+ }
+ }
+
+ bw = (ncols == 2); /* Maybe this is a two-color image */
+ if (bw)
+ {
+ bwline = g_malloc ((width + 7) / 8);
+ if (bwline == NULL)
+ bw = 0;
+ }
+
+ is_bw = is_wb = 0;
+ if (bw) /* The Sun-OS imagetool generates index 0 for white and */
+ { /* index 1 for black. Do the same without colortable. */
+ is_bw = (memcmp (suncolmap, sun_bwmap, 6) == 0);
+ is_wb = (memcmp (suncolmap, sun_wbmap, 6) == 0);
+ }
+
+ /* Number of data bytes per line */
+ bpl = bw ? (width+7)/8 : width;
+ linepad = bpl % 2;
+
+ /* Fill in the SUN header */
+ sunhdr.l_ras_magic = RAS_MAGIC;
+ sunhdr.l_ras_width = width;
+ sunhdr.l_ras_height = height;
+ sunhdr.l_ras_depth = bw ? 1 : 8;
+ sunhdr.l_ras_length = (bpl + linepad) * height;
+ sunhdr.l_ras_type = rle ? RAS_TYPE_RLE : RAS_TYPE_STD;
+
+ if (is_bw || is_wb) /* No colortable for real b/w images */
+ {
+ sunhdr.l_ras_maptype = 0; /* No colormap */
+ sunhdr.l_ras_maplength = 0; /* Length of colormap */
+ }
+ else
+ {
+ sunhdr.l_ras_maptype = 1; /* RGB colormap */
+ sunhdr.l_ras_maplength = ncols*3; /* Length of colormap */
+ }
+
+ write_sun_header (ofp, &sunhdr);
+
+ if (sunhdr.l_ras_maplength > 0)
+ write_sun_cols (ofp, &sunhdr, suncolmap);
+
+#define GET_INDEX_TILE(begin) \
+ {int scan_lines; \
+ scan_lines = (i+tile_height-1 < height) ? tile_height : (height-i); \
+ gegl_buffer_get (buffer, GEGL_RECTANGLE (0, i, width, scan_lines), 1.0, \
+ format, begin, \
+ GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); \
+ src = begin; }
+
+ if (rle)
+ {
+ write_fun = (WRITE_FUN *) &rle_fwrite;
+ rle_startwrite (ofp);
+ }
+ else
+ {
+ write_fun = (WRITE_FUN *) &my_fwrite;
+ }
+
+ if (bw) /* Two color image */
+ {
+ for (i = 0; i < height; i++)
+ {
+ if ((i % tile_height) == 0)
+ GET_INDEX_TILE (data); /* Get more data */
+
+ byte2bit (src, width, bwline, is_bw);
+ (*write_fun) (bwline, bpl, 1, ofp);
+ if (linepad)
+ (*write_fun) ((char *)&tmp, linepad, 1, ofp);
+ src += width;
+
+ if ((i % 20) == 0)
+ gimp_progress_update ((double) i / (double) height);
+ }
+ }
+ else /* Color or grey-image */
+ {
+ for (i = 0; i < height; i++)
+ {
+ if ((i % tile_height) == 0)
+ GET_INDEX_TILE (data); /* Get more data */
+
+ (*write_fun) ((char *)src, width, 1, ofp);
+ if (linepad)
+ (*write_fun) ((char *)&tmp, linepad, 1, ofp);
+ src += width;
+
+ if ((i % 20) == 0)
+ gimp_progress_update ((double) i / (double) height);
+ }
+ }
+
+#undef GET_INDEX_TILE
+
+ if (rle)
+ rle_endwrite (ofp);
+
+ g_free (data);
+
+ if (bwline)
+ g_free (bwline);
+
+ g_object_unref (buffer);
+
+ if (ferror (ofp))
+ {
+ g_message (_("Write error occurred"));
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+
+static gint
+save_rgb (FILE *ofp,
+ gint32 image_ID,
+ gint32 drawable_ID,
+ gboolean rle)
+{
+ int height, width, tile_height, linepad;
+ int i, j, bpp;
+ guchar *data, *src;
+ L_SUNFILEHEADER sunhdr;
+ GeglBuffer *buffer;
+ const Babl *format;
+
+ buffer = gimp_drawable_get_buffer (drawable_ID);
+
+ width = gegl_buffer_get_width (buffer);
+ height = gegl_buffer_get_height (buffer);
+
+ tile_height = gimp_tile_height ();
+
+ format = babl_format ("R'G'B' u8");
+
+ /* allocate a buffer for retrieving information from the pixel region */
+ src = data = g_malloc (tile_height * width *
+ babl_format_get_bytes_per_pixel (format));
+
+/* #define SUNRAS_32 */
+#ifdef SUNRAS_32
+ bpp = 4;
+#else
+ bpp = 3;
+#endif
+ linepad = (width * bpp) % 2;
+
+ /* Fill in the SUN header */
+ sunhdr.l_ras_magic = RAS_MAGIC;
+ sunhdr.l_ras_width = width;
+ sunhdr.l_ras_height = height;
+ sunhdr.l_ras_depth = 8 * bpp;
+ sunhdr.l_ras_length = (width * bpp + linepad) * height;
+ sunhdr.l_ras_type = rle ? RAS_TYPE_RLE : RAS_TYPE_STD;
+ sunhdr.l_ras_maptype = 0; /* No colormap */
+ sunhdr.l_ras_maplength = 0; /* Length of colormap */
+
+ write_sun_header (ofp, &sunhdr);
+
+#define GET_RGB_TILE(begin) \
+ {int scan_lines; \
+ scan_lines = (i+tile_height-1 < height) ? tile_height : (height-i); \
+ gegl_buffer_get (buffer, GEGL_RECTANGLE (0, i, width, scan_lines), 1.0, \
+ format, begin, \
+ GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); \
+ src = begin; }
+
+ if (! rle)
+ {
+ for (i = 0; i < height; i++)
+ {
+ if ((i % tile_height) == 0)
+ GET_RGB_TILE (data); /* Get more data */
+
+ for (j = 0; j < width; j++)
+ {
+ if (bpp == 4) putc (0, ofp); /* Dummy */
+ putc (*(src + 2), ofp); /* Blue */
+ putc (*(src + 1), ofp); /* Green */
+ putc (*src, ofp); /* Red */
+ src += 3;
+ }
+
+ for (j = 0; j < linepad; j++)
+ putc (0, ofp);
+
+ if ((i % 20) == 0)
+ gimp_progress_update ((double) i / (double) height);
+ }
+ }
+ else /* Write runlength encoded */
+ {
+ rle_startwrite (ofp);
+
+ for (i = 0; i < height; i++)
+ {
+ if ((i % tile_height) == 0)
+ GET_RGB_TILE (data); /* Get more data */
+
+ for (j = 0; j < width; j++)
+ {
+ if (bpp == 4) rle_putc (0, ofp); /* Dummy */
+ rle_putc (*(src + 2), ofp); /* Blue */
+ rle_putc (*(src + 1), ofp); /* Green */
+ rle_putc (*src, ofp); /* Red */
+ src += 3;
+ }
+
+ for (j = 0; j < linepad; j++)
+ rle_putc (0, ofp);
+
+ if ((i % 20) == 0)
+ gimp_progress_update ((double) i / (double) height);
+ }
+
+ rle_endwrite (ofp);
+ }
+
+#undef GET_RGB_TILE
+
+ g_free (data);
+
+ g_object_unref (buffer);
+
+ if (ferror (ofp))
+ {
+ g_message (_("Write error occurred"));
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+
+/* Save interface functions */
+
+static gboolean
+save_dialog (void)
+{
+ GtkWidget *dialog;
+ GtkWidget *frame;
+ gboolean run;
+
+ dialog = gimp_export_dialog_new (_("SUNRAS"), PLUG_IN_BINARY, SAVE_PROC);
+
+ /* file save type */
+ frame = gimp_int_radio_group_new (TRUE, _("Data Formatting"),
+ G_CALLBACK (gimp_radio_button_update),
+ &psvals.rle, psvals.rle,
+
+ _("_RunLength Encoded"), TRUE, NULL,
+ _("_Standard"), FALSE, NULL,
+
+ NULL);
+
+ gtk_container_set_border_width (GTK_CONTAINER (frame), 12);
+ gtk_box_pack_start (GTK_BOX (gimp_export_dialog_get_content_area (dialog)),
+ frame, TRUE, TRUE, 0);
+ gtk_widget_show (frame);
+
+ gtk_widget_show (dialog);
+
+ run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
+
+ gtk_widget_destroy (dialog);
+
+ return run;
+}
+
+static int
+my_fwrite (void *ptr,
+ int size,
+ int nmemb,
+ FILE *stream)
+{
+ return fwrite (ptr, size, nmemb, stream);
+}