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gimp/plug-ins/common/mng.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* Multiple-image Network Graphics (MNG) plug-in
*
* Copyright (C) 2002 S. Mukund <muks@mukund.org>
* Portions are copyright of the authors of the file-gif-save, file-png-save
* and file-jpeg-save plug-ins' code. The exact ownership of these code
* fragments has not been determined.
*
* This work was sponsored by Xinit Systems Limited, UK.
* http://www.xinitsystems.com/
*
* THIS SOURCE CODE DOES NOT INCLUDE ANY FUNCTIONALITY FOR READING
* OR WRITING CONTENT IN THE GIF IMAGE FORMAT.
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* --
*
* For now, this MNG plug-in can only save images. It cannot load images.
* Save your working copy as .xcf and use this for "exporting" your images
* to MNG. Supports animation the same way as animated GIFs. Supports alpha
* transparency. Uses the libmng library (http://www.libmng.com/).
* The MIME content-type for MNG images is video/x-mng for now. Make sure
* your web-server is configured appropriately if you want to serve MNG
* images.
*
* Since libmng cannot write PNG, JNG and delta PNG chunks at this time
* (when this text was written), this plug-in uses libpng and jpeglib to
* create the data for the chunks.
*
*/
#include "config.h"
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <glib/gstdio.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
/* libpng and jpeglib are currently used in this plug-in. */
#include <png.h>
#include <jpeglib.h>
/* Grrr. The grrr is because the following have to be defined
* by the application as well for some reason, although they
* were enabled when libmng was compiled. The authors of libmng
* must look into this. */
#if !defined(MNG_SUPPORT_FULL)
#define MNG_SUPPORT_FULL 1
#endif
#if !defined(MNG_SUPPORT_READ)
#define MNG_SUPPORT_READ 1
#endif
#if !defined(MNG_SUPPORT_WRITE)
#define MNG_SUPPORT_WRITE 1
#endif
#if !defined(MNG_SUPPORT_DISPLAY)
#define MNG_SUPPORT_DISPLAY 1
#endif
#if !defined(MNG_ACCESS_CHUNKS)
#define MNG_ACCESS_CHUNKS 1
#endif
#include <libmng.h>
#include "libgimp/gimp.h"
#include "libgimp/gimpui.h"
#include "libgimp/stdplugins-intl.h"
#define SAVE_PROC "file-mng-save"
#define PLUG_IN_BINARY "mng"
#define SCALE_WIDTH 125
enum
{
CHUNKS_PNG_D,
CHUNKS_JNG_D,
CHUNKS_PNG,
CHUNKS_JNG
};
enum
{
DISPOSE_COMBINE,
DISPOSE_REPLACE
};
/* The contents of this struct remain static among multiple
* invocations of the plug-in. */
/* TODO: describe the members of the struct */
struct mng_data_t
{
gint32 interlaced;
gint32 bkgd;
gint32 gama;
gint32 phys;
gint32 time;
gint32 default_chunks;
gfloat quality;
gfloat smoothing;
gint32 compression_level;
gint32 loop;
gint32 default_delay;
gint32 default_dispose;
};
/* Values of the instance of the above struct when the plug-in is
* first invoked. */
struct mng_data_t mng_data =
{
FALSE, /* interlaced */
FALSE, /* bkgd */
FALSE, /* gama */
TRUE, /* phys */
TRUE, /* time */
CHUNKS_PNG_D, /* default_chunks */
0.75, /* quality */
0.0, /* smoothing */
9, /* compression_level */
TRUE, /* loop */
100, /* default_delay */
DISPOSE_COMBINE /* default_dispose */
};
/* The output FILE pointer which is used by libmng;
* passed around as user data. */
struct mnglib_userdata_t
{
FILE *fp;
};
/*
* Function prototypes
*/
static mng_ptr myalloc (mng_size_t size);
static void myfree (mng_ptr ptr,
mng_size_t size);
static mng_bool myopenstream (mng_handle handle);
static mng_bool myclosestream (mng_handle handle);
static mng_bool mywritedata (mng_handle handle,
mng_ptr buf,
mng_uint32 size,
mng_uint32 *written_size);
static gint32 parse_chunks_type_from_layer_name (const gchar *str);
static gint32 parse_disposal_type_from_layer_name (const gchar *str);
static gint32 parse_ms_tag_from_layer_name (const gchar *str);
static gint find_unused_ia_colour (guchar *pixels,
gint numpixels,
gint *colors);
static gboolean ia_has_transparent_pixels (guchar *pixels,
gint numpixels);
static gboolean respin_cmap (png_structp png_ptr,
png_infop png_info_ptr,
guchar *remap,
gint32 image_id,
GimpDrawable *drawable);
static gint mng_save_image (const gchar *filename,
gint32 image_id,
gint32 drawable_id,
gint32 original_image_id);
static gint mng_save_dialog (gint32 image_id);
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
/*
* Callbacks for libmng
*/
static mng_ptr
myalloc (mng_size_t size)
{
gpointer ptr;
ptr = g_try_malloc ((gulong) size);
if (ptr != NULL)
memset (ptr, 0, size);
return ((mng_ptr) ptr);
}
static void
myfree (mng_ptr ptr,
mng_size_t size)
{
g_free (ptr);
}
static mng_bool
myopenstream (mng_handle handle)
{
return MNG_TRUE;
}
static mng_bool
myclosestream (mng_handle handle)
{
return MNG_TRUE;
}
static mng_bool
mywritedata (mng_handle handle,
mng_ptr buf,
mng_uint32 size,
mng_uint32 *written_size)
{
struct mnglib_userdata_t *userdata =
(struct mnglib_userdata_t *) mng_get_userdata (handle);
*written_size = (mng_uint32) fwrite ((void *) buf, 1,
(size_t) size, userdata->fp);
return MNG_TRUE;
}
/* Parses which output chunk type to use for this layer
* from the layer name. */
static gint32
parse_chunks_type_from_layer_name (const gchar *str)
{
guint i;
for (i = 0; (i + 5) <= strlen (str); i++)
{
if (g_ascii_strncasecmp (str + i, "(png)", 5) == 0)
return CHUNKS_PNG;
else if (g_ascii_strncasecmp (str + i, "(jng)", 5) == 0)
return CHUNKS_JNG;
}
return mng_data.default_chunks;
}
/* Parses which disposal type to use for this layer
* from the layer name. */
static gint32
parse_disposal_type_from_layer_name (const gchar *str)
{
guint i;
for (i = 0; (i + 9) <= strlen (str); i++)
{
if (g_ascii_strncasecmp (str + i, "(combine)", 9) == 0)
return DISPOSE_COMBINE;
else if (g_ascii_strncasecmp (str + i, "(replace)", 9) == 0)
return DISPOSE_REPLACE;
}
return mng_data.default_dispose;
}
/* Parses the millisecond delay to use for this layer
* from the layer name. */
static gint32
parse_ms_tag_from_layer_name (const gchar *str)
{
guint offset = 0;
gint32 sum = 0;
guint length = strlen (str);
while (TRUE)
{
while ((offset < length) && (str[offset] != '('))
offset++;
if (offset >= length)
return mng_data.default_delay;
offset++;
if (g_ascii_isdigit (str[offset]))
break;
}
do
{
sum *= 10;
sum += str[offset] - '0';
offset++;
}
while ((offset < length) && (g_ascii_isdigit (str[offset])));
if ((length - offset) <= 2)
return mng_data.default_delay;
if ((g_ascii_toupper (str[offset]) != 'M') ||
(g_ascii_toupper (str[offset + 1]) != 'S'))
return mng_data.default_delay;
return sum;
}
/* Try to find a colour in the palette which isn't actually
* used in the image, so that we can use it as the transparency
* index. Taken from png.c */
static gint
find_unused_ia_colour (guchar *pixels,
gint numpixels,
gint *colors)
{
gint i;
gboolean ix_used[256];
gboolean trans_used = FALSE;
for (i = 0; i < *colors; i++)
{
ix_used[i] = FALSE;
}
for (i = 0; i < numpixels; i++)
{
/* If alpha is over a threshold, the colour index in the
* palette is taken. Otherwise, this pixel is transparent. */
if (pixels[i * 2 + 1] > 127)
ix_used[pixels[i * 2]] = TRUE;
else
trans_used = TRUE;
}
/* If there is no transparency, ignore alpha. */
if (trans_used == FALSE)
return -1;
for (i = 0; i < *colors; i++)
{
if (ix_used[i] == FALSE)
{
return i;
}
}
/* Couldn't find an unused colour index within the number of
bits per pixel we wanted. Will have to increment the number
of colours in the image and assign a transparent pixel there. */
if ((*colors) < 256)
{
(*colors)++;
return ((*colors) - 1);
}
return (-1);
}
static gboolean
ia_has_transparent_pixels (guchar *pixels,
gint numpixels)
{
while (numpixels --)
{
if (pixels [1] <= 127)
return TRUE;
pixels += 2;
}
return FALSE;
}
/* Spins the color map (palette) putting the transparent color at
* index 0 if there is space. If there isn't any space, warn the user
* and forget about transparency. Returns TRUE if the colormap has
* been changed and FALSE otherwise.
*/
static gboolean
respin_cmap (png_structp png_ptr,
png_infop png_info_ptr,
guchar *remap,
gint32 image_id,
GimpDrawable *drawable)
{
static guchar trans[] = { 0 };
guchar *before;
guchar *pixels;
gint numpixels;
gint colors;
gint transparent;
gint cols, rows;
GimpPixelRgn pixel_rgn;
before = gimp_image_get_colormap (image_id, &colors);
/*
* Make sure there is something in the colormap.
*/
if (colors == 0)
{
before = g_new0 (guchar, 3);
colors = 1;
}
cols = drawable->width;
rows = drawable->height;
numpixels = cols * rows;
gimp_pixel_rgn_init (&pixel_rgn, drawable, 0, 0,
drawable->width, drawable->height, FALSE, FALSE);
pixels = (guchar *) g_malloc (numpixels * 2);
gimp_pixel_rgn_get_rect (&pixel_rgn, pixels, 0, 0,
drawable->width, drawable->height);
if (ia_has_transparent_pixels (pixels, numpixels))
{
transparent = find_unused_ia_colour (pixels, numpixels, &colors);
if (transparent != -1)
{
png_color palette[256];
gint i;
png_set_tRNS (png_ptr, png_info_ptr, (png_bytep) trans, 1, NULL);
/* Transform all pixels with a value = transparent to
* 0 and vice versa to compensate for re-ordering in palette
* due to png_set_tRNS() */
remap[0] = transparent;
remap[transparent] = 0;
/* Copy from index 0 to index transparent - 1 to index 1 to
* transparent of after, then from transparent+1 to colors-1
* unchanged, and finally from index transparent to index 0. */
for (i = 0; i < colors; i++)
{
palette[i].red = before[3 * remap[i]];
palette[i].green = before[3 * remap[i] + 1];
palette[i].blue = before[3 * remap[i] + 2];
}
png_set_PLTE (png_ptr, png_info_ptr, (png_colorp) palette, colors);
return TRUE;
}
else
g_message (_("Couldn't losslessly save transparency, "
"saving opacity instead."));
}
png_set_PLTE (png_ptr, png_info_ptr, (png_colorp) before, colors);
return FALSE;
}
static gint
mng_save_image (const gchar *filename,
gint32 image_id,
gint32 drawable_id,
gint32 original_image_id)
{
gint rows, cols;
volatile gint i;
time_t t;
struct tm *gmt;
gint num_layers;
gint32 *layers;
struct mnglib_userdata_t *userdata;
mng_handle handle;
mng_retcode ret;
guint32 mng_ticks_per_second;
guint32 mng_simplicity_profile;
layers = gimp_image_get_layers (image_id, &num_layers);
if (num_layers < 1)
return 0;
if (num_layers > 1)
mng_ticks_per_second = 1000;
else
mng_ticks_per_second = 0;
rows = gimp_image_height (image_id);
cols = gimp_image_width (image_id);
mng_simplicity_profile =
(MNG_SIMPLICITY_VALID | MNG_SIMPLICITY_SIMPLEFEATURES |
MNG_SIMPLICITY_COMPLEXFEATURES);
mng_simplicity_profile |= (MNG_SIMPLICITY_JNG | MNG_SIMPLICITY_DELTAPNG); /* JNG and delta-PNG chunks exist */
for (i = 0; i < num_layers; i++)
if (gimp_drawable_has_alpha (layers[i]))
{
mng_simplicity_profile |= MNG_SIMPLICITY_TRANSPARENCY; /* internal transparency exists */
mng_simplicity_profile |= 0x00000040; /* validity of following */
mng_simplicity_profile |= 0x00000100; /* semi-transparency exists */
mng_simplicity_profile |= 0x00000080; /* background transparency should happen */
break;
}
userdata = g_new0 (struct mnglib_userdata_t, 1);
if ((userdata->fp = g_fopen (filename, "wb")) == NULL)
{
g_message (_("Could not open '%s' for writing: %s"),
gimp_filename_to_utf8 (filename), g_strerror (errno));
g_free (userdata);
return 0;
}
if ((handle =
mng_initialize ((mng_ptr) userdata, myalloc, myfree,
MNG_NULL)) == NULL)
{
g_warning ("Unable to mng_initialize() in mng_save_image()");
fclose (userdata->fp);
g_free (userdata);
return 0;
}
if (((ret = mng_setcb_openstream (handle, myopenstream)) != MNG_NOERROR) ||
((ret = mng_setcb_closestream (handle, myclosestream)) != MNG_NOERROR)
|| ((ret = mng_setcb_writedata (handle, mywritedata)) != MNG_NOERROR))
{
g_warning ("Unable to setup callbacks in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
if ((ret = mng_create (handle)) != MNG_NOERROR)
{
g_warning ("Unable to mng_create() image in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
if ((ret =
mng_putchunk_mhdr (handle, cols, rows, mng_ticks_per_second, 1,
num_layers, mng_data.default_delay,
mng_simplicity_profile)) != MNG_NOERROR)
{
g_warning ("Unable to mng_putchunk_mhdr() in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
if ((num_layers > 1) && (mng_data.loop))
{
if ((ret =
mng_putchunk_term (handle, MNG_TERMACTION_REPEAT,
MNG_ITERACTION_LASTFRAME,
parse_ms_tag_from_layer_name
(gimp_drawable_get_name (layers[0])),
0x7fffffff)) != MNG_NOERROR)
{
g_warning ("Unable to mng_putchunk_term() in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
}
else
{
if ((ret =
mng_putchunk_term (handle, MNG_TERMACTION_LASTFRAME,
MNG_ITERACTION_LASTFRAME,
parse_ms_tag_from_layer_name
(gimp_drawable_get_name (layers[0])),
0x7fffffff)) != MNG_NOERROR)
{
g_warning ("Unable to mng_putchunk_term() in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
}
/* For now, we hardwire a comment */
if ((ret =
mng_putchunk_text (handle, strlen (MNG_TEXT_TITLE), MNG_TEXT_TITLE, 22,
"Created using GIMP")) != MNG_NOERROR)
{
g_warning ("Unable to mng_putchunk_text() in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
#if 0
/* how do we get this to work? */
if (mng_data.bkgd)
{
GimpRGB bgcolor;
guchar red, green, blue;
gimp_context_get_background(&bgcolor);
gimp_rgb_get_uchar(&bgcolor, &red, &green, &blue);
if ((ret = mng_putchunk_back(handle, red, green, blue,
MNG_BACKGROUNDCOLOR_MANDATORY,
0, MNG_BACKGROUNDIMAGE_NOTILE)) != MNG_NOERROR)
{
g_warning("Unable to mng_putchunk_back() in mng_save_image()");
mng_cleanup(&handle);
fclose(userdata->fp);
g_free(userdata);
return 0;
}
if ((ret = mng_putchunk_bkgd(handle, MNG_FALSE, 2, 0,
gimp_rgb_luminance_uchar(&bgcolor),
red, green, blue)) != MNG_NOERROR)
{
g_warning("Unable to mng_putchunk_bkgd() in mng_save_image()");
mng_cleanup(&handle);
fclose(userdata->fp);
g_free(userdata);
return 0;
}
}
#endif
if (mng_data.gama)
{
if ((ret =
mng_putchunk_gama (handle, MNG_FALSE,
(1.0 / (gimp_gamma ()) * 100000))) != MNG_NOERROR)
{
g_warning ("Unable to mng_putchunk_gama() in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
}
#if 0
/* how do we get this to work? */
if (mng_data.phys)
{
gimp_image_get_resolution(original_image_id, &xres, &yres);
if ((ret = mng_putchunk_phyg(handle, MNG_FALSE, (mng_uint32) (xres * 39.37), (mng_uint32) (yres * 39.37), 1)) != MNG_NOERROR)
{
g_warning("Unable to mng_putchunk_phyg() in mng_save_image()");
mng_cleanup(&handle);
fclose(userdata->fp);
g_free(userdata);
return 0;
}
if ((ret = mng_putchunk_phys(handle, MNG_FALSE, (mng_uint32) (xres * 39.37), (mng_uint32) (yres * 39.37), 1)) != MNG_NOERROR)
{
g_warning("Unable to mng_putchunk_phys() in mng_save_image()");
mng_cleanup(&handle);
fclose(userdata->fp);
g_free(userdata);
return 0;
}
}
#endif
if (mng_data.time)
{
t = time (NULL);
gmt = gmtime (&t);
if ((ret =
mng_putchunk_time (handle, gmt->tm_year + 1900, gmt->tm_mon + 1,
gmt->tm_mday, gmt->tm_hour, gmt->tm_min,
gmt->tm_sec)) != MNG_NOERROR)
{
g_warning ("Unable to mng_putchunk_time() in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
}
if (gimp_image_base_type (image_id) == GIMP_INDEXED)
{
guchar *palette;
gint numcolors;
palette = gimp_image_get_colormap (image_id, &numcolors);
if (numcolors != 0 &&
(ret = mng_putchunk_plte (handle, numcolors, (mng_palette8e *) palette))
!= MNG_NOERROR)
{
g_warning ("Unable to mng_putchunk_plte() in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
}
for (i = (num_layers - 1); i >= 0; i--)
{
gint num_colors;
GimpImageType layer_drawable_type;
GimpDrawable *layer_drawable;
gint layer_offset_x, layer_offset_y;
gint layer_rows, layer_cols;
gchar *layer_name;
gint layer_chunks_type;
volatile gint layer_bpp;
GimpPixelRgn layer_pixel_rgn;
guint8 layer_mng_colortype;
guint8 layer_mng_compression_type;
guint8 layer_mng_interlace_type;
gboolean layer_has_unique_palette;
gchar frame_mode;
int frame_delay;
gchar *temp_file_name;
png_structp png_ptr;
png_infop png_info_ptr;
FILE *infile, *outfile;
int num_passes;
int tile_height;
guchar **layer_pixels, *layer_pixel;
int pass, j, k, begin, end, num;
guchar *fixed;
guchar layer_remap[256];
layer_name = gimp_drawable_get_name (layers[i]);
layer_chunks_type = parse_chunks_type_from_layer_name (layer_name);
layer_drawable_type = gimp_drawable_type (layers[i]);
layer_drawable = gimp_drawable_get (layers[i]);
layer_rows = layer_drawable->height;
layer_cols = layer_drawable->width;
gimp_drawable_offsets (layers[i], &layer_offset_x, &layer_offset_y);
layer_has_unique_palette = TRUE;
for (j = 0; j < 256; j++)
layer_remap[j] = j;
switch (layer_drawable_type)
{
case GIMP_RGB_IMAGE:
layer_bpp = 3;
layer_mng_colortype = MNG_COLORTYPE_RGB;
break;
case GIMP_RGBA_IMAGE:
layer_bpp = 4;
layer_mng_colortype = MNG_COLORTYPE_RGBA;
break;
case GIMP_GRAY_IMAGE:
layer_bpp = 1;
layer_mng_colortype = MNG_COLORTYPE_GRAY;
break;
case GIMP_GRAYA_IMAGE:
layer_bpp = 2;
layer_mng_colortype = MNG_COLORTYPE_GRAYA;
break;
case GIMP_INDEXED_IMAGE:
layer_bpp = 1;
layer_mng_colortype = MNG_COLORTYPE_INDEXED;
break;
case GIMP_INDEXEDA_IMAGE:
layer_bpp = 2;
layer_mng_colortype = MNG_COLORTYPE_INDEXED | MNG_COLORTYPE_GRAYA;
break;
default:
g_warning ("Unsupported GimpImageType in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
/* Delta PNG chunks are not yet supported */
/* if (i == (num_layers - 1)) */
{
if (layer_chunks_type == CHUNKS_JNG_D)
layer_chunks_type = CHUNKS_JNG;
else if (layer_chunks_type == CHUNKS_PNG_D)
layer_chunks_type = CHUNKS_PNG;
}
switch (layer_chunks_type)
{
case CHUNKS_PNG_D:
layer_mng_compression_type = MNG_COMPRESSION_DEFLATE;
if (mng_data.interlaced != 0)
layer_mng_interlace_type = MNG_INTERLACE_ADAM7;
else
layer_mng_interlace_type = MNG_INTERLACE_NONE;
break;
case CHUNKS_JNG_D:
layer_mng_compression_type = MNG_COMPRESSION_DEFLATE;
if (mng_data.interlaced != 0)
layer_mng_interlace_type = MNG_INTERLACE_ADAM7;
else
layer_mng_interlace_type = MNG_INTERLACE_NONE;
break;
case CHUNKS_PNG:
layer_mng_compression_type = MNG_COMPRESSION_DEFLATE;
if (mng_data.interlaced != 0)
layer_mng_interlace_type = MNG_INTERLACE_ADAM7;
else
layer_mng_interlace_type = MNG_INTERLACE_NONE;
break;
case CHUNKS_JNG:
layer_mng_compression_type = MNG_COMPRESSION_BASELINEJPEG;
if (mng_data.interlaced != 0)
layer_mng_interlace_type = MNG_INTERLACE_PROGRESSIVE;
else
layer_mng_interlace_type = MNG_INTERLACE_SEQUENTIAL;
break;
default:
g_warning
("Huh? Programmer stupidity error with 'layer_chunks_type'");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
if ((i == (num_layers - 1))
|| (parse_disposal_type_from_layer_name (layer_name) !=
DISPOSE_COMBINE))
frame_mode = MNG_FRAMINGMODE_3;
else
frame_mode = MNG_FRAMINGMODE_1;
frame_delay = parse_ms_tag_from_layer_name (layer_name);
if ((ret = mng_putchunk_fram (handle, MNG_FALSE, frame_mode, 0, NULL,
MNG_CHANGEDELAY_DEFAULT,
MNG_CHANGETIMOUT_NO,
MNG_CHANGECLIPPING_DEFAULT,
MNG_CHANGESYNCID_NO,
frame_delay, 0, 0,
layer_offset_x,
layer_offset_x + layer_cols,
layer_offset_y,
layer_offset_y + layer_rows,
0, 0)) != MNG_NOERROR)
{
g_warning ("Unable to mng_putchunk_fram() in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
if ((layer_offset_x != 0) || (layer_offset_y != 0))
if ((ret =
mng_putchunk_defi (handle, 0, 0, 1, 1, layer_offset_x,
layer_offset_y, 1, layer_offset_x,
layer_offset_x + layer_cols, layer_offset_y,
layer_offset_y + layer_rows)) != MNG_NOERROR)
{
g_warning ("Unable to mng_putchunk_defi() in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
if ((temp_file_name = gimp_temp_name ("mng")) == NULL)
{
g_warning ("gimp_temp_name() failed in mng_save_image(");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
if ((outfile = g_fopen (temp_file_name, "wb")) == NULL)
{
g_message (_("Could not open '%s' for writing: %s"),
gimp_filename_to_utf8 (temp_file_name),
g_strerror (errno));
g_unlink (temp_file_name);
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
if ((png_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING,
(png_voidp) NULL,
(png_error_ptr) NULL,
(png_error_ptr) NULL)) == NULL)
{
g_warning
("Unable to png_create_write_struct() in mng_save_image()");
fclose (outfile);
g_unlink (temp_file_name);
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
if ((png_info_ptr = png_create_info_struct (png_ptr)) == NULL)
{
g_warning
("Unable to png_create_info_struct() in mng_save_image()");
png_destroy_write_struct (&png_ptr, (png_infopp) NULL);
fclose (outfile);
g_unlink (temp_file_name);
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
if (setjmp (png_ptr->jmpbuf) != 0)
{
g_warning ("HRM saving PNG in mng_save_image()");
png_destroy_write_struct (&png_ptr, (png_infopp) NULL);
fclose (outfile);
g_unlink (temp_file_name);
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
png_init_io (png_ptr, outfile);
png_set_compression_level (png_ptr, mng_data.compression_level);
png_info_ptr->width = layer_cols;
png_info_ptr->height = layer_rows;
png_info_ptr->interlace_type = ((mng_data.interlaced == 0) ? 0 : 1);
png_info_ptr->bit_depth = 8;
switch (layer_drawable_type)
{
case GIMP_RGB_IMAGE:
png_info_ptr->color_type = PNG_COLOR_TYPE_RGB;
break;
case GIMP_RGBA_IMAGE:
png_info_ptr->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
break;
case GIMP_GRAY_IMAGE:
png_info_ptr->color_type = PNG_COLOR_TYPE_GRAY;
break;
case GIMP_GRAYA_IMAGE:
png_info_ptr->color_type = PNG_COLOR_TYPE_GRAY_ALPHA;
break;
case GIMP_INDEXED_IMAGE:
png_info_ptr->color_type = PNG_COLOR_TYPE_PALETTE;
png_info_ptr->valid |= PNG_INFO_PLTE;
png_info_ptr->palette =
(png_colorp) gimp_image_get_colormap (image_id, &num_colors);
png_info_ptr->num_palette = num_colors;
break;
case GIMP_INDEXEDA_IMAGE:
png_info_ptr->color_type = PNG_COLOR_TYPE_PALETTE;
layer_has_unique_palette =
respin_cmap (png_ptr, png_info_ptr, layer_remap,
image_id, layer_drawable);
break;
default:
g_warning ("This can't be!\n");
return 0;
}
if ((png_info_ptr->valid & PNG_INFO_PLTE) == PNG_INFO_PLTE)
{
if (png_info_ptr->num_palette <= 2)
png_info_ptr->bit_depth = 1;
else if (png_info_ptr->num_palette <= 4)
png_info_ptr->bit_depth = 2;
else if (png_info_ptr->num_palette <= 16)
png_info_ptr->bit_depth = 4;
}
png_write_info (png_ptr, png_info_ptr);
if (mng_data.interlaced != 0)
num_passes = png_set_interlace_handling (png_ptr);
else
num_passes = 1;
if ((png_info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
&& (png_info_ptr->bit_depth < 8))
png_set_packing (png_ptr);
tile_height = gimp_tile_height ();
layer_pixel = g_new (guchar, tile_height * layer_cols * layer_bpp);
layer_pixels = g_new (guchar *, tile_height);
for (j = 0; j < tile_height; j++)
layer_pixels[j] = layer_pixel + (layer_cols * layer_bpp * j);
gimp_pixel_rgn_init (&layer_pixel_rgn, layer_drawable, 0, 0, layer_cols,
layer_rows, FALSE, FALSE);
for (pass = 0; pass < num_passes; pass++)
{
for (begin = 0, end = tile_height; begin < layer_rows;
begin += tile_height, end += tile_height)
{
if (end > layer_rows)
end = layer_rows;
num = end - begin;
gimp_pixel_rgn_get_rect (&layer_pixel_rgn, layer_pixel, 0,
begin, layer_cols, num);
if ((png_info_ptr->valid & PNG_INFO_tRNS) == PNG_INFO_tRNS)
{
for (j = 0; j < num; j++)
{
fixed = layer_pixels[j];
for (k = 0; k < layer_cols; k++)
fixed[k] =
((fixed[k * 2 + 1] > 127) ? layer_remap[fixed[k * 2]] : 0);
}
}
else
if (((png_info_ptr->valid & PNG_INFO_PLTE) == PNG_INFO_PLTE)
&& (layer_bpp == 2))
{
for (j = 0; j < num; j++)
{
fixed = layer_pixels[j];
for (k = 0; k < layer_cols; k++)
fixed[k] = fixed[k * 2];
}
}
png_write_rows (png_ptr, layer_pixels, num);
}
}
png_write_end (png_ptr, png_info_ptr);
png_destroy_write_struct (&png_ptr, &png_info_ptr);
g_free (layer_pixels);
g_free (layer_pixel);
fclose (outfile);
if ((infile = g_fopen (temp_file_name, "rb")) == NULL)
{
g_message (_("Could not open '%s' for reading: %s"),
gimp_filename_to_utf8 (temp_file_name),
g_strerror (errno));
g_unlink (temp_file_name);
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
fseek (infile, 8L, SEEK_SET);
while (!feof (infile))
{
guchar chunksize_chars[4];
gulong chunksize;
gchar chunkname[5];
guchar *chunkbuffer;
glong chunkwidth;
glong chunkheight;
gchar chunkbitdepth;
gchar chunkcolortype;
gchar chunkcompression;
gchar chunkfilter;
gchar chunkinterlaced;
if (fread (chunksize_chars, 1, 4, infile) != 4)
break;
if (fread (chunkname, 1, 4, infile) != 4)
break;
chunkname[4] = 0;
chunksize = (chunksize_chars[0] << 24) | (chunksize_chars[1] << 16)
| (chunksize_chars[2] << 8) | chunksize_chars[3];
chunkbuffer = NULL;
if (chunksize > 0)
{
chunkbuffer = g_new (guchar, chunksize);
if (fread (chunkbuffer, 1, chunksize, infile) != chunksize)
break;
}
if (strncmp (chunkname, "IHDR", 4) == 0)
{
chunkwidth = (chunkbuffer[0] << 24) | (chunkbuffer[1] << 16)
| (chunkbuffer[2] << 8) | chunkbuffer[3];
chunkheight = (chunkbuffer[4] << 24) | (chunkbuffer[5] << 16)
| (chunkbuffer[6] << 8) | chunkbuffer[7];
chunkbitdepth = chunkbuffer[8];
chunkcolortype = chunkbuffer[9];
chunkcompression = chunkbuffer[10];
chunkfilter = chunkbuffer[11];
chunkinterlaced = chunkbuffer[12];
if ((ret =
mng_putchunk_ihdr (handle, chunkwidth, chunkheight,
chunkbitdepth, chunkcolortype,
chunkcompression, chunkfilter,
chunkinterlaced)) != MNG_NOERROR)
{
g_warning
("Unable to mng_putchunk_ihdr() in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
}
else if (strncmp (chunkname, "IDAT", 4) == 0)
{
if ((ret =
mng_putchunk_idat (handle, chunksize,
chunkbuffer)) != MNG_NOERROR)
{
g_warning
("Unable to mng_putchunk_idat() in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
}
else if (strncmp (chunkname, "IEND", 4) == 0)
{
if ((ret = mng_putchunk_iend (handle)) != MNG_NOERROR)
{
g_warning
("Unable to mng_putchunk_iend() in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
}
else if (strncmp (chunkname, "PLTE", 4) == 0)
{
/* if this frame's palette is the same as the global palette,
write a 0-color palette chunk */
if ((ret =
mng_putchunk_plte (handle,
layer_has_unique_palette ? (chunksize / 3) : 0,
(mng_palette8e *) chunkbuffer))
!= MNG_NOERROR)
{
g_warning
("Unable to mng_putchunk_plte() in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
}
else if (strncmp (chunkname, "tRNS", 4) == 0)
{
if ((ret =
mng_putchunk_trns (handle, 0, 0, 3, chunksize,
(mng_uint8 *) chunkbuffer, 0, 0, 0, 0,
0,
(mng_uint8 *) chunkbuffer)) !=
MNG_NOERROR)
{
g_warning
("Unable to mng_putchunk_trns() in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
}
if (chunksize > 0)
g_free (chunkbuffer);
/* read 4 bytes after the chunk */
fread (chunkname, 1, 4, infile);
}
fclose (infile);
g_unlink (temp_file_name);
}
if ((ret = mng_putchunk_mend (handle)) != MNG_NOERROR)
{
g_warning ("Unable to mng_putchunk_mend() in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
if ((ret = mng_write (handle)) != MNG_NOERROR)
{
g_warning ("Unable to mng_write() the image in mng_save_image()");
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return 0;
}
mng_cleanup (&handle);
fclose (userdata->fp);
g_free (userdata);
return TRUE;
}
/* The interactive dialog. */
static gint
mng_save_dialog (gint32 image_id)
{
GtkWidget *dialog;
GtkWidget *main_vbox;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *table;
GtkWidget *toggle;
GtkWidget *hbox;
GtkWidget *combo;
GtkWidget *label;
GtkWidget *scale;
GtkObject *scale_adj;
GtkWidget *spinbutton;
GtkObject *spinbutton_adj;
gint num_layers;
gboolean run;
dialog = gimp_dialog_new (_("Save as MNG"), PLUG_IN_BINARY,
NULL, 0,
gimp_standard_help_func, SAVE_PROC,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_SAVE, GTK_RESPONSE_OK,
NULL);
gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
gimp_window_set_transient (GTK_WINDOW (dialog));
main_vbox = gtk_vbox_new (FALSE, 12);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog)->vbox), main_vbox);
frame = gimp_frame_new (_("MNG Options"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, TRUE, TRUE, 0);
vbox = gtk_vbox_new (FALSE, 6);
gtk_container_add (GTK_CONTAINER (frame), vbox);
toggle = gtk_check_button_new_with_label (_("Interlace"));
gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&mng_data.interlaced);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
mng_data.interlaced);
gtk_widget_show (toggle);
toggle = gtk_check_button_new_with_label (_("Save background color"));
gtk_widget_set_sensitive (toggle, FALSE);
gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&mng_data.bkgd);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), mng_data.bkgd);
gtk_widget_show (toggle);
toggle = gtk_check_button_new_with_label (_("Save gamma"));
gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&mng_data.gama);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), mng_data.gama);
gtk_widget_show (toggle);
toggle = gtk_check_button_new_with_label (_("Save resolution"));
gtk_widget_set_sensitive (toggle, FALSE);
gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&mng_data.phys);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), mng_data.phys);
gtk_widget_show (toggle);
toggle = gtk_check_button_new_with_label (_("Save creation time"));
gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&mng_data.time);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), mng_data.time);
gtk_widget_show (toggle);
table = gtk_table_new (2, 4, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
gtk_widget_show (table);
gimp_image_get_layers (image_id, &num_layers);
if (num_layers == 1)
combo = gimp_int_combo_box_new (_("PNG"), CHUNKS_PNG_D,
_("JNG"), CHUNKS_JNG_D,
NULL);
else
combo = gimp_int_combo_box_new (_("PNG + delta PNG"), CHUNKS_PNG_D,
_("JNG + delta PNG"), CHUNKS_JNG_D,
_("All PNG"), CHUNKS_PNG,
_("All JNG"), CHUNKS_JNG,
NULL);
gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (combo),
mng_data.default_chunks);
g_signal_connect (combo, "changed",
G_CALLBACK (gimp_int_combo_box_get_active),
&mng_data.default_chunks);
gtk_widget_set_sensitive (combo, FALSE);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Default chunks type:"), 0.0, 0.5,
combo, 1, FALSE);
combo = gimp_int_combo_box_new (_("Combine"), DISPOSE_COMBINE,
_("Replace"), DISPOSE_REPLACE,
NULL);
gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (combo),
mng_data.default_dispose);
g_signal_connect (combo, "changed",
G_CALLBACK (gimp_int_combo_box_get_active),
&mng_data.default_dispose);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
_("Default frame disposal:"), 0.0, 0.5,
combo, 1, FALSE);
scale_adj = gtk_adjustment_new (mng_data.compression_level,
0.0, 9.0, 1.0, 1.0, 0.0);
scale = gtk_hscale_new (GTK_ADJUSTMENT (scale_adj));
gtk_widget_set_size_request (scale, SCALE_WIDTH, -1);
gtk_scale_set_value_pos (GTK_SCALE (scale), GTK_POS_TOP);
gtk_scale_set_digits (GTK_SCALE (scale), 0);
gtk_range_set_update_policy (GTK_RANGE (scale), GTK_UPDATE_DELAYED);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 2,
_("PNG compression level:"), 0.0, 0.9,
scale, 1, FALSE);
g_signal_connect (scale_adj, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&mng_data.compression_level);
gimp_help_set_help_data (scale,
_("Choose a high compression level "
"for small file size"),
NULL);
scale_adj = gtk_adjustment_new (mng_data.quality,
0.0, 1.0, 0.01, 0.01, 0.0);
scale = gtk_hscale_new (GTK_ADJUSTMENT (scale_adj));
gtk_widget_set_size_request (scale, SCALE_WIDTH, -1);
gtk_scale_set_value_pos (GTK_SCALE (scale), GTK_POS_TOP);
gtk_scale_set_digits (GTK_SCALE (scale), 2);
gtk_range_set_update_policy (GTK_RANGE (scale), GTK_UPDATE_DELAYED);
gtk_widget_set_sensitive (scale, FALSE);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 3,
_("JPEG compression quality:"), 0.0, 0.9,
scale, 1, FALSE);
g_signal_connect (scale_adj, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&mng_data.quality);
scale_adj = gtk_adjustment_new (mng_data.smoothing,
0.0, 1.0, 0.01, 0.01, 0.0);
scale = gtk_hscale_new (GTK_ADJUSTMENT (scale_adj));
gtk_widget_set_size_request (scale, SCALE_WIDTH, -1);
gtk_scale_set_value_pos (GTK_SCALE (scale), GTK_POS_TOP);
gtk_scale_set_digits (GTK_SCALE (scale), 2);
gtk_range_set_update_policy (GTK_RANGE (scale), GTK_UPDATE_DELAYED);
gtk_widget_set_sensitive (scale, FALSE);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 4,
_("JPEG smoothing factor:"), 0.0, 0.9,
scale, 1, FALSE);
g_signal_connect (scale_adj, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&mng_data.smoothing);
gtk_widget_show (vbox);
gtk_widget_show (frame);
frame = gimp_frame_new (_("Animated MNG Options"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, TRUE, TRUE, 0);
vbox = gtk_vbox_new (FALSE, 6);
gtk_container_add (GTK_CONTAINER (frame), vbox);
toggle = gtk_check_button_new_with_label (_("Loop"));
gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&mng_data.loop);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
mng_data.loop);
gtk_widget_show (toggle);
hbox = gtk_hbox_new (FALSE, 4);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
label = gtk_label_new (_("Default frame delay:"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
spinbutton = gimp_spin_button_new (&spinbutton_adj,
mng_data.default_delay,
0, 65000, 10, 100, 0, 1, 0);
g_signal_connect (spinbutton_adj, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&mng_data.default_delay);
gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
gtk_widget_show (spinbutton);
label = gtk_label_new (_("milliseconds"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
gtk_widget_show (hbox);
gtk_widget_show (vbox);
gtk_widget_show (frame);
gtk_widget_set_sensitive (frame, num_layers > 1);
gtk_widget_show (main_vbox);
gtk_widget_show (dialog);
run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
gtk_widget_destroy (dialog);
return run;
}
/* GIMP calls these methods. */
static void
query (void)
{
static const GimpParamDef save_args[] =
{
{ GIMP_PDB_INT32, "run-mode", "Interactive, non-interactive" },
{ GIMP_PDB_IMAGE, "image", "Input image" },
{ GIMP_PDB_DRAWABLE, "drawable", "Drawable to save" },
{ GIMP_PDB_STRING, "filename", "The name of the file to save the image in" },
{ GIMP_PDB_STRING, "raw-filename", "The name of the file to save the image in" },
{ GIMP_PDB_INT32, "interlace", "Use interlacing" },
{ GIMP_PDB_INT32, "compression", "PNG deflate compression level (0 - 9)" },
{ GIMP_PDB_FLOAT, "quality", "JPEG quality factor (0.00 - 1.00)" },
{ GIMP_PDB_FLOAT, "smoothing", "JPEG smoothing factor (0.00 - 1.00)" },
{ GIMP_PDB_INT32, "loop", "(ANIMATED MNG) Loop infinitely" },
{ GIMP_PDB_INT32, "default-delay", "(ANIMATED MNG) Default delay between frames in milliseconds" },
{ GIMP_PDB_INT32, "default-chunks", "(ANIMATED MNG) Default chunks type (0 = PNG + Delta PNG; 1 = JNG + Delta PNG; 2 = All PNG; 3 = All JNG)" },
{ GIMP_PDB_INT32, "default-dispose", "(ANIMATED MNG) Default dispose type (0 = combine; 1 = replace)" },
{ GIMP_PDB_INT32, "bkgd", "Write bKGD (background color) chunk" },
{ GIMP_PDB_INT32, "gama", "Write gAMA (gamma) chunk"},
{ GIMP_PDB_INT32, "phys", "Write pHYs (image resolution) chunk" },
{ GIMP_PDB_INT32, "time", "Write tIME (creation time) chunk" }
};
gimp_install_procedure (SAVE_PROC,
"Saves images in the MNG file format",
"This plug-in saves images in the Multiple-image "
"Network Graphics (MNG) format which can be used as "
"a replacement for animated GIFs, and more.",
"S. Mukund <muks@mukund.org>",
"S. Mukund <muks@mukund.org>",
"November 19, 2002",
N_("MNG animation"),
"RGB*,GRAY*,INDEXED*",
GIMP_PLUGIN,
G_N_ELEMENTS (save_args), 0,
save_args, NULL);
gimp_register_file_handler_mime (SAVE_PROC, "image/x-mng");
gimp_register_save_handler (SAVE_PROC, "mng", "");
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
INIT_I18N ();
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = GIMP_PDB_SUCCESS;
if (strcmp (name, SAVE_PROC) == 0)
{
GimpRunMode run_mode;
gint32 image_id, original_image_id;
gint32 drawable_id;
GimpExportReturn export = GIMP_EXPORT_IGNORE;
run_mode = param[0].data.d_int32;
image_id = original_image_id = param[1].data.d_int32;
drawable_id = param[2].data.d_int32;
if ((run_mode == GIMP_RUN_INTERACTIVE)
|| (run_mode == GIMP_RUN_WITH_LAST_VALS))
{
gimp_procedural_db_get_data (SAVE_PROC, &mng_data);
gimp_ui_init (PLUG_IN_BINARY, FALSE);
export = gimp_export_image (&image_id, &drawable_id, "MNG",
(GIMP_EXPORT_CAN_HANDLE_RGB |
GIMP_EXPORT_CAN_HANDLE_GRAY |
GIMP_EXPORT_CAN_HANDLE_INDEXED |
GIMP_EXPORT_CAN_HANDLE_ALPHA |
GIMP_EXPORT_CAN_HANDLE_LAYERS_AS_ANIMATION));
}
if (export == GIMP_EXPORT_CANCEL)
values[0].data.d_status = GIMP_PDB_CANCEL;
else if ((export == GIMP_EXPORT_IGNORE)
|| (export == GIMP_EXPORT_EXPORT))
{
if (run_mode == GIMP_RUN_INTERACTIVE)
{
if (mng_save_dialog (image_id) == 0)
values[0].data.d_status = GIMP_PDB_CANCEL;
}
else if (run_mode == GIMP_RUN_NONINTERACTIVE)
{
if (nparams != 17)
{
g_message ("Incorrect number of parameters "
"passed to file-mng-save()");
values[0].data.d_status = GIMP_PDB_CALLING_ERROR;
}
else
{
mng_data.interlaced = param[5].data.d_int32;
mng_data.compression_level = param[6].data.d_int32;
mng_data.quality = param[7].data.d_float;
mng_data.smoothing = param[8].data.d_float;
mng_data.loop = param[9].data.d_int32;
mng_data.default_delay = param[10].data.d_int32;
mng_data.default_chunks = param[11].data.d_int32;
mng_data.default_dispose = param[12].data.d_int32;
mng_data.bkgd = param[13].data.d_int32;
mng_data.gama = param[14].data.d_int32;
mng_data.phys = param[15].data.d_int32;
mng_data.time = param[16].data.d_int32;
if ((mng_data.compression_level < 0)
|| (mng_data.compression_level > 9))
{
g_warning ("Parameter 'compression_level' passed to file-mng-save() must be in the range 0 - 9; Clamping it to the default value of 6.");
mng_data.compression_level = 6;
}
if ((mng_data.quality < ((float) 0))
|| (mng_data.quality > ((float) 1)))
{
g_warning ("Parameter 'quality' passed to file-mng-save() must be in the range 0.00 - 1.00; Clamping it to the default value of 0.75.");
mng_data.quality = 0.75;
}
if ((mng_data.smoothing < ((float) 0))
|| (mng_data.smoothing > ((float) 1)))
{
g_warning ("Parameter 'smoothing' passed to file-mng-save() must be in the range 0.00 - 1.00; Clamping it to the default value of 0.00.");
mng_data.smoothing = 0.0;
}
if ((mng_data.default_chunks < 0)
|| (mng_data.default_chunks > 3))
{
g_warning ("Parameter 'default_chunks' passed to file-mng-save() must be in the range 0 - 2.");
values[0].data.d_status = GIMP_PDB_CALLING_ERROR;
}
if ((mng_data.default_dispose < 0)
|| (mng_data.default_dispose > 1))
{
g_warning ("Parameter 'default_dispose' passed to file-mng-save() must be in the range 0 - 1.");
values[0].data.d_status = GIMP_PDB_CALLING_ERROR;
}
}
}
if (values[0].data.d_status == GIMP_PDB_SUCCESS)
{
if (mng_save_image
(param[3].data.d_string, image_id, drawable_id,
original_image_id) != 0)
gimp_set_data (SAVE_PROC, &mng_data, sizeof (mng_data));
else
values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
}
if (export == GIMP_EXPORT_EXPORT)
gimp_image_delete (image_id);
}
}
else
values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
}
/* Only query and run are implemented by this plug-in. */
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL,
NULL,
query,
run
};
MAIN ()
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