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gimp/plug-ins/file-exr/file-exr.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#include "openexr-wrapper.h"
#define LOAD_PROC "file-exr-load"
#define PLUG_IN_BINARY "file-exr"
#define PLUG_IN_VERSION "0.0.0"
/*
* 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,
gboolean interactive,
GError **error);
static void sanitize_comment (gchar *comment);
/*
* Some global variables.
*/
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
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" }
};
gimp_install_procedure (LOAD_PROC,
"Loads files in the OpenEXR file format",
"This plug-in loads OpenEXR files. ",
"Dominik Ernst <dernst@gmx.de>, "
"Mukund Sivaraman <muks@banu.com>",
"Dominik Ernst <dernst@gmx.de>, "
"Mukund Sivaraman <muks@banu.com>",
PLUG_IN_VERSION,
N_("OpenEXR 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-exr");
gimp_register_magic_load_handler (LOAD_PROC,
"exr",
"",
"0,long,0x762f3101");
}
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;
GError *error = NULL;
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)
{
run_mode = param[0].data.d_int32;
image_ID = load_image (param[1].data.d_string,
run_mode == GIMP_RUN_INTERACTIVE, &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
{
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,
gboolean interactive,
GError **error)
{
EXRLoader *loader;
gint width;
gint height;
gboolean has_alpha;
GimpImageBaseType image_type;
GimpPrecision image_precision;
gint32 image = -1;
GimpImageType layer_type;
gint32 layer;
const Babl *format;
GeglBuffer *buffer = NULL;
gint bpp;
gint tile_height;
gchar *pixels = NULL;
gint begin;
gint32 success = FALSE;
gchar *comment;
GimpMetadata *metadata;
gboolean have_metadata = FALSE;
guchar *exif_data;
guint exif_size;
guchar *xmp_data;
guint xmp_size;
gimp_progress_init_printf (_("Opening '%s'"),
gimp_filename_to_utf8 (filename));
loader = exr_loader_new (filename);
if (! loader)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error opening file '%s' for reading"),
gimp_filename_to_utf8 (filename));
goto out;
}
width = exr_loader_get_width (loader);
height = exr_loader_get_height (loader);
if ((width < 1) || (height < 1))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error querying image dimensions from '%s'"),
gimp_filename_to_utf8 (filename));
goto out;
}
has_alpha = exr_loader_has_alpha (loader) ? TRUE : FALSE;
switch (exr_loader_get_precision (loader))
{
case PREC_UINT:
image_precision = GIMP_PRECISION_U32_LINEAR;
break;
case PREC_HALF:
image_precision = GIMP_PRECISION_HALF_LINEAR;
break;
case PREC_FLOAT:
image_precision = GIMP_PRECISION_FLOAT_LINEAR;
break;
default:
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error querying image precision from '%s'"),
gimp_filename_to_utf8 (filename));
goto out;
}
switch (exr_loader_get_image_type (loader))
{
case IMAGE_TYPE_RGB:
image_type = GIMP_RGB;
layer_type = has_alpha ? GIMP_RGBA_IMAGE : GIMP_RGB_IMAGE;
break;
case IMAGE_TYPE_GRAY:
image_type = GIMP_GRAY;
layer_type = has_alpha ? GIMP_GRAYA_IMAGE : GIMP_GRAY_IMAGE;
break;
default:
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error querying image type from '%s'"),
gimp_filename_to_utf8 (filename));
goto out;
}
image = gimp_image_new_with_precision (width, height,
image_type, image_precision);
if (image == -1)
{
g_set_error (error, 0, 0,
_("Could not create new image for '%s': %s"),
gimp_filename_to_utf8 (filename), gimp_get_pdb_error ());
goto out;
}
gimp_image_set_filename (image, filename);
layer = gimp_layer_new (image, _("Background"), width, height,
layer_type, 100, GIMP_LAYER_MODE_NORMAL_LEGACY);
gimp_image_insert_layer (image, layer, -1, 0);
buffer = gimp_drawable_get_buffer (layer);
format = gimp_drawable_get_format (layer);
bpp = babl_format_get_bytes_per_pixel (format);
tile_height = gimp_tile_height ();
pixels = g_new0 (gchar, tile_height * width * bpp);
for (begin = 0; begin < height; begin += tile_height)
{
gint end;
gint num;
gint i;
end = MIN (begin + tile_height, height);
num = end - begin;
for (i = 0; i < num; i++)
{
gint retval;
retval = exr_loader_read_pixel_row (loader,
pixels + (i * width * bpp),
bpp, begin + i);
if (retval < 0)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading pixel data from '%s'"),
gimp_filename_to_utf8 (filename));
goto out;
}
}
gegl_buffer_set (buffer, GEGL_RECTANGLE (0, begin, width, num),
0, NULL, pixels, GEGL_AUTO_ROWSTRIDE);
gimp_progress_update ((gdouble) begin / (gdouble) height);
}
/* try to load an icc profile, it will be generated on the fly if
* chromaticities are given
*/
if (image_type == GIMP_RGB)
{
GimpColorProfile *profile;
profile = exr_loader_get_profile (loader);
if (profile)
{
gimp_image_set_color_profile (image, profile);
g_object_unref (profile);
}
}
/* try to read the file comment */
comment = exr_loader_get_comment (loader);
if (comment)
{
GimpParasite *parasite;
sanitize_comment (comment);
parasite = gimp_parasite_new ("gimp-comment",
GIMP_PARASITE_PERSISTENT,
strlen (comment) + 1,
comment);
gimp_image_attach_parasite (image, parasite);
gimp_parasite_free (parasite);
g_free (comment);
}
metadata = gimp_image_get_metadata (image);
if (metadata)
g_object_ref (metadata);
else
metadata = gimp_metadata_new ();
/* check if the image contains Exif data and read it */
exif_data = exr_loader_get_exif (loader, &exif_size);
if (exif_data)
{
if (gimp_metadata_set_from_exif (metadata,
exif_data,
exif_size,
NULL))
{
have_metadata = TRUE;
}
g_free (exif_data);
}
/* try to read the Xmp data */
xmp_data = exr_loader_get_xmp (loader, &xmp_size);
if (xmp_data)
{
if (gimp_metadata_set_from_xmp (metadata,
xmp_data,
xmp_size,
NULL))
{
have_metadata = TRUE;
}
g_free (xmp_data);
}
if (have_metadata)
gimp_image_set_metadata (image, metadata);
g_object_unref (metadata);
gimp_progress_update (1.0);
success = TRUE;
out:
if (buffer)
g_object_unref (buffer);
if (pixels)
g_free (pixels);
if (loader)
exr_loader_unref (loader);
if (success)
return image;
if (image != -1)
gimp_image_delete (image);
return -1;
}
/* copy & pasted from file-jpeg/jpeg-load.c */
static void
sanitize_comment (gchar *comment)
{
if (! g_utf8_validate (comment, -1, NULL))
{
gchar *c;
for (c = comment; *c; c++)
{
if (*c > 126 || (*c < 32 && *c != '\t' && *c != '\n' && *c != '\r'))
*c = '?';
}
}
}
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