mirror of https://github.com/GNOME/gimp.git
477 lines
15 KiB
C
477 lines
15 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <libgimp/gimp.h>
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#include <libgimp/gimpui.h>
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#include "libgimp/stdplugins-intl.h"
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#include "openexr-wrapper.h"
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#define LOAD_PROC "file-exr-load"
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#define PLUG_IN_BINARY "file-exr"
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#define PLUG_IN_VERSION "0.0.0"
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typedef struct _Exr Exr;
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typedef struct _ExrClass ExrClass;
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struct _Exr
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{
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GimpPlugIn parent_instance;
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};
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struct _ExrClass
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{
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GimpPlugInClass parent_class;
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};
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#define EXR_TYPE (exr_get_type ())
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#define EXR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EXR_TYPE, Exr))
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GType exr_get_type (void) G_GNUC_CONST;
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static GList * exr_query_procedures (GimpPlugIn *plug_in);
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static GimpProcedure * exr_create_procedure (GimpPlugIn *plug_in,
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const gchar *name);
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static GimpValueArray * exr_load (GimpProcedure *procedure,
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GimpRunMode run_mode,
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GFile *file,
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GimpMetadata *metadata,
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GimpMetadataLoadFlags *flags,
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GimpProcedureConfig *config,
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gpointer run_data);
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static GimpImage * load_image (GFile *file,
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GimpMetadata *metadata,
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GimpMetadataLoadFlags *flags,
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gboolean interactive,
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GError **error);
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static void sanitize_comment (gchar *comment);
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void load_dialog (EXRImageType image_type);
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G_DEFINE_TYPE (Exr, exr, GIMP_TYPE_PLUG_IN)
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GIMP_MAIN (EXR_TYPE)
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DEFINE_STD_SET_I18N
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static void
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exr_class_init (ExrClass *klass)
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{
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GimpPlugInClass *plug_in_class = GIMP_PLUG_IN_CLASS (klass);
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plug_in_class->query_procedures = exr_query_procedures;
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plug_in_class->create_procedure = exr_create_procedure;
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plug_in_class->set_i18n = STD_SET_I18N;
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}
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static void
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exr_init (Exr *exr)
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{
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}
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static GList *
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exr_query_procedures (GimpPlugIn *plug_in)
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{
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return g_list_append (NULL, g_strdup (LOAD_PROC));
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}
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static GimpProcedure *
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exr_create_procedure (GimpPlugIn *plug_in,
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const gchar *name)
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{
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GimpProcedure *procedure = NULL;
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if (! strcmp (name, LOAD_PROC))
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{
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procedure = gimp_load_procedure_new (plug_in, name,
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GIMP_PDB_PROC_TYPE_PLUGIN,
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exr_load, NULL, NULL);
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gimp_procedure_set_menu_label (procedure, _("OpenEXR image"));
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gimp_procedure_set_documentation (procedure,
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_("Loads files in the OpenEXR file format"),
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"This plug-in loads OpenEXR files. ",
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name);
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gimp_procedure_set_attribution (procedure,
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"Dominik Ernst <dernst@gmx.de>, "
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"Mukund Sivaraman <muks@banu.com>",
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"Dominik Ernst <dernst@gmx.de>, "
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"Mukund Sivaraman <muks@banu.com>",
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NULL);
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gimp_file_procedure_set_mime_types (GIMP_FILE_PROCEDURE (procedure),
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"image/x-exr");
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gimp_file_procedure_set_extensions (GIMP_FILE_PROCEDURE (procedure),
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"exr");
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gimp_file_procedure_set_magics (GIMP_FILE_PROCEDURE (procedure),
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"0,long,0x762f3101");
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}
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return procedure;
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}
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static GimpValueArray *
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exr_load (GimpProcedure *procedure,
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GimpRunMode run_mode,
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GFile *file,
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GimpMetadata *metadata,
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GimpMetadataLoadFlags *flags,
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GimpProcedureConfig *config,
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gpointer run_data)
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{
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GimpValueArray *return_vals;
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GimpImage *image;
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GError *error = NULL;
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gegl_init (NULL, NULL);
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image = load_image (file, metadata, flags, run_mode == GIMP_RUN_INTERACTIVE,
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&error);
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if (! image)
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return gimp_procedure_new_return_values (procedure,
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GIMP_PDB_EXECUTION_ERROR,
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error);
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return_vals = gimp_procedure_new_return_values (procedure,
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GIMP_PDB_SUCCESS,
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NULL);
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GIMP_VALUES_SET_IMAGE (return_vals, 1, image);
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return return_vals;
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}
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static GimpImage *
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load_image (GFile *file,
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GimpMetadata *metadata,
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GimpMetadataLoadFlags *flags,
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gboolean interactive,
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GError **error)
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{
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EXRLoader *loader;
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gint width;
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gint height;
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gboolean has_alpha;
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GimpImageBaseType image_type;
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GimpPrecision image_precision;
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GimpImage *image = NULL;
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GimpImageType layer_type;
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GimpLayer *layer;
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const Babl *format;
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GeglBuffer *buffer = NULL;
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gint bpp;
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gint tile_height;
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gchar *pixels = NULL;
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gint begin;
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gint32 success = FALSE;
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gchar *comment = NULL;
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GimpColorProfile *profile = NULL;
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guchar *exif_data;
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guint exif_size;
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guchar *xmp_data;
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guint xmp_size;
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gimp_progress_init_printf (_("Opening '%s'"),
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gimp_file_get_utf8_name (file));
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loader = exr_loader_new (g_file_peek_path (file));
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if (! loader)
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{
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g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
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_("Error opening file '%s' for reading"),
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gimp_file_get_utf8_name (file));
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goto out;
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}
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width = exr_loader_get_width (loader);
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height = exr_loader_get_height (loader);
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if ((width < 1) || (height < 1))
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{
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g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
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_("Error querying image dimensions from '%s'"),
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gimp_file_get_utf8_name (file));
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goto out;
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}
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has_alpha = exr_loader_has_alpha (loader) ? TRUE : FALSE;
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switch (exr_loader_get_precision (loader))
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{
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case PREC_UINT:
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image_precision = GIMP_PRECISION_U32_LINEAR;
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break;
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case PREC_HALF:
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image_precision = GIMP_PRECISION_HALF_LINEAR;
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break;
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case PREC_FLOAT:
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image_precision = GIMP_PRECISION_FLOAT_LINEAR;
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break;
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default:
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g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
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_("Error querying image precision from '%s'"),
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gimp_file_get_utf8_name (file));
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goto out;
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}
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switch (exr_loader_get_image_type (loader))
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{
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case IMAGE_TYPE_RGB:
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image_type = GIMP_RGB;
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layer_type = has_alpha ? GIMP_RGBA_IMAGE : GIMP_RGB_IMAGE;
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break;
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case IMAGE_TYPE_YUV:
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case IMAGE_TYPE_GRAY:
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case IMAGE_TYPE_UNKNOWN_1_CHANNEL:
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image_type = GIMP_GRAY;
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layer_type = has_alpha ? GIMP_GRAYA_IMAGE : GIMP_GRAY_IMAGE;
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break;
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default:
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g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
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_("Error querying image type from '%s'"),
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gimp_file_get_utf8_name (file));
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goto out;
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}
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image = gimp_image_new_with_precision (width, height,
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image_type, image_precision);
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if (! image)
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{
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g_set_error (error, 0, 0,
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_("Could not create new image for '%s': %s"),
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gimp_file_get_utf8_name (file),
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gimp_pdb_get_last_error (gimp_get_pdb ()));
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goto out;
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}
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if (interactive &&
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(exr_loader_get_image_type (loader) == IMAGE_TYPE_UNKNOWN_1_CHANNEL ||
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exr_loader_get_image_type (loader) == IMAGE_TYPE_YUV))
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load_dialog (exr_loader_get_image_type (loader));
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/* try to load an icc profile, it will be generated on the fly if
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* chromaticities are given
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*/
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if (image_type == GIMP_RGB)
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{
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profile = exr_loader_get_profile (loader);
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if (profile)
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gimp_image_set_color_profile (image, profile);
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}
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layer = gimp_layer_new (image, _("Background"), width, height,
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layer_type, 100,
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gimp_image_get_default_new_layer_mode (image));
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gimp_image_insert_layer (image, layer, NULL, 0);
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buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer));
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format = gimp_drawable_get_format (GIMP_DRAWABLE (layer));
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bpp = babl_format_get_bytes_per_pixel (format);
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tile_height = gimp_tile_height ();
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pixels = g_new0 (gchar, tile_height * width * bpp);
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for (begin = 0; begin < height; begin += tile_height)
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{
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gint end;
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gint num;
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gint i;
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end = MIN (begin + tile_height, height);
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num = end - begin;
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for (i = 0; i < num; i++)
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{
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gint retval;
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retval = exr_loader_read_pixel_row (loader,
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pixels + (i * width * bpp),
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bpp, begin + i);
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if (retval < 0)
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{
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g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
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_("Error reading pixel data from '%s'"),
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gimp_file_get_utf8_name (file));
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goto out;
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}
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}
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gegl_buffer_set (buffer, GEGL_RECTANGLE (0, begin, width, num),
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0, NULL, pixels, GEGL_AUTO_ROWSTRIDE);
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gimp_progress_update ((gdouble) begin / (gdouble) height);
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}
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/* try to read the file comment */
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comment = exr_loader_get_comment (loader);
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if (comment)
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{
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GimpParasite *parasite;
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sanitize_comment (comment);
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parasite = gimp_parasite_new ("gimp-comment",
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GIMP_PARASITE_PERSISTENT,
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strlen (comment) + 1,
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comment);
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gimp_image_attach_parasite (image, parasite);
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gimp_parasite_free (parasite);
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}
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/* check if the image contains Exif or Xmp data and read it */
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exif_data = exr_loader_get_exif (loader, &exif_size);
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xmp_data = exr_loader_get_xmp (loader, &xmp_size);
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if (metadata && (exif_data || xmp_data))
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{
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if (exif_data)
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{
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GError *error = NULL;
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if (! gimp_metadata_set_from_exif (metadata, exif_data, exif_size, &error))
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{
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g_message (_("Failed to load metadata: %s"),
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error ? error->message : _("Unknown reason"));
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g_clear_error (&error);
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}
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g_free (exif_data);
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}
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if (xmp_data)
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{
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GError *error = NULL;
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if (! gimp_metadata_set_from_xmp (metadata, xmp_data, xmp_size, &error))
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{
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g_message (_("Failed to load metadata: %s"),
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error ? error->message : _("Unknown reason"));
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g_clear_error (&error);
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}
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g_free (xmp_data);
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}
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if (comment)
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*flags &= ~GIMP_METADATA_LOAD_COMMENT;
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if (profile)
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*flags &= ~GIMP_METADATA_LOAD_COLORSPACE;
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}
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gimp_progress_update (1.0);
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success = TRUE;
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out:
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g_clear_object (&profile);
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g_clear_object (&buffer);
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g_clear_pointer (&pixels, g_free);
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g_clear_pointer (&comment, g_free);
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g_clear_pointer (&loader, exr_loader_unref);
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if (success)
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return image;
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if (image)
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gimp_image_delete (image);
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return NULL;
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}
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/* copy & pasted from file-jpeg/jpeg-load.c */
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static void
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sanitize_comment (gchar *comment)
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{
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const gchar *start_invalid;
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if (! g_utf8_validate (comment, -1, &start_invalid))
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{
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guchar *c;
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for (c = (guchar *) start_invalid; *c; c++)
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{
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if (*c > 126 || (*c < 32 && *c != '\t' && *c != '\n' && *c != '\r'))
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*c = '?';
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}
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}
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}
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void
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load_dialog (EXRImageType image_type)
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{
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GtkWidget *dialog;
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GtkWidget *label;
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GtkWidget *vbox;
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gchar *label_text = NULL;
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gimp_ui_init (PLUG_IN_BINARY);
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dialog = gimp_dialog_new (_("Import OpenEXR"),
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"openexr-notice",
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NULL, 0, NULL, NULL,
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_("_OK"), GTK_RESPONSE_OK,
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NULL);
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gimp_window_set_transient (GTK_WINDOW (dialog));
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vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
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gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
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gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
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vbox, TRUE, TRUE, 0);
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gtk_widget_set_visible (vbox, TRUE);
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if (image_type == IMAGE_TYPE_UNKNOWN_1_CHANNEL)
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label_text = g_strdup_printf ("<b>%s</b>\n%s", _("Unknown Channel Name"),
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_("The image contains a single unknown channel.\n"
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"It has been converted to grayscale."));
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else if (image_type == IMAGE_TYPE_YUV)
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label_text = g_strdup_printf ("<b>%s</b>\n%s", _("Chroma Channels"),
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_("OpenEXR chroma channels are not yet supported.\n"
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"They have been discarded."));
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label = gtk_label_new (NULL);
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gtk_label_set_markup (GTK_LABEL (label), label_text);
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gtk_label_set_selectable (GTK_LABEL (label), TRUE);
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gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
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gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
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gtk_label_set_yalign (GTK_LABEL (label), 0.0);
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gtk_box_pack_start (GTK_BOX (vbox), label, TRUE, TRUE, 0);
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gtk_widget_set_visible (label, TRUE);
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if (label_text)
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g_free (label_text);
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gtk_widget_set_visible (dialog, TRUE);
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/* run the dialog */
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gimp_dialog_run (GIMP_DIALOG (dialog));
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gtk_widget_destroy (dialog);
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}
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