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-rw-r--r--plug-ins/file-jpeg/jpeg.c643
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diff --git a/plug-ins/file-jpeg/jpeg.c b/plug-ins/file-jpeg/jpeg.c
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+++ b/plug-ins/file-jpeg/jpeg.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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <setjmp.h>
+#include <string.h>
+
+#include <jpeglib.h>
+#include <jerror.h>
+
+#include <libgimp/gimp.h>
+#include <libgimp/gimpui.h>
+
+#include "libgimp/stdplugins-intl.h"
+
+#include "jpeg.h"
+#include "jpeg-settings.h"
+#include "jpeg-load.h"
+#include "jpeg-save.h"
+
+/* Declare local functions.
+ */
+
+static void query (void);
+static void run (const gchar *name,
+ gint nparams,
+ const GimpParam *param,
+ gint *nreturn_vals,
+ GimpParam **return_vals);
+
+gboolean undo_touched;
+gboolean load_interactive;
+gchar *image_comment;
+gint32 display_ID;
+JpegSaveVals jsvals;
+gint32 orig_image_ID_global;
+gint32 drawable_ID_global;
+gint orig_quality;
+JpegSubsampling orig_subsmp;
+gint num_quant_tables;
+
+
+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" }
+ };
+
+ static const GimpParamDef thumb_args[] =
+ {
+ { GIMP_PDB_STRING, "filename", "The name of the file to load" },
+ { GIMP_PDB_INT32, "thumb-size", "Preferred thumbnail size" }
+ };
+ static const GimpParamDef thumb_return_vals[] =
+ {
+ { GIMP_PDB_IMAGE, "image", "Thumbnail image" },
+ { GIMP_PDB_INT32, "image-width", "Width of full-sized image" },
+ { GIMP_PDB_INT32, "image-height", "Height of full-sized 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 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_FLOAT, "quality", "Quality of saved image (0 <= quality <= 1)" },
+ { GIMP_PDB_FLOAT, "smoothing", "Smoothing factor for saved image (0 <= smoothing <= 1)" },
+ { GIMP_PDB_INT32, "optimize", "Use optimized tables during Huffman coding (0/1)" },
+ { GIMP_PDB_INT32, "progressive", "Create progressive JPEG images (0/1)" },
+ { GIMP_PDB_STRING, "comment", "Image comment" },
+ { GIMP_PDB_INT32, "subsmp", "Sub-sampling type { 0, 1, 2, 3 } 0 == 4:2:0 (chroma quartered), 1 == 4:2:2 Horizontal (chroma halved), 2 == 4:4:4 (best quality), 3 == 4:2:2 Vertical (chroma halved)" },
+ { GIMP_PDB_INT32, "baseline", "Force creation of a baseline JPEG (non-baseline JPEGs can't be read by all decoders) (0/1)" },
+ { GIMP_PDB_INT32, "restart", "Interval of restart markers (in MCU rows, 0 = no restart markers)" },
+ { GIMP_PDB_INT32, "dct", "DCT method to use { INTEGER (0), FIXED (1), FLOAT (2) }" }
+ };
+
+ gimp_install_procedure (LOAD_PROC,
+ "loads files in the JPEG file format",
+ "loads files in the JPEG file format",
+ "Spencer Kimball, Peter Mattis & others",
+ "Spencer Kimball & Peter Mattis",
+ "1995-2007",
+ N_("JPEG 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/jpeg");
+ gimp_register_magic_load_handler (LOAD_PROC,
+ "jpg,jpeg,jpe",
+ "",
+ "0,string,\xff\xd8\xff");
+
+ gimp_install_procedure (LOAD_THUMB_PROC,
+ "Loads a thumbnail from a JPEG image",
+ "Loads a thumbnail from a JPEG image (only if it exists)",
+ "Mukund Sivaraman <muks@mukund.org>, Sven Neumann <sven@gimp.org>",
+ "Mukund Sivaraman <muks@mukund.org>, Sven Neumann <sven@gimp.org>",
+ "November 15, 2004",
+ NULL,
+ NULL,
+ GIMP_PLUGIN,
+ G_N_ELEMENTS (thumb_args),
+ G_N_ELEMENTS (thumb_return_vals),
+ thumb_args, thumb_return_vals);
+
+ gimp_register_thumbnail_loader (LOAD_PROC, LOAD_THUMB_PROC);
+
+ gimp_install_procedure (SAVE_PROC,
+ "saves files in the JPEG file format",
+ "saves files in the lossy, widely supported JPEG format",
+ "Spencer Kimball, Peter Mattis & others",
+ "Spencer Kimball & Peter Mattis",
+ "1995-2007",
+ N_("JPEG image"),
+ "RGB*, GRAY*",
+ GIMP_PLUGIN,
+ G_N_ELEMENTS (save_args), 0,
+ save_args, NULL);
+
+ gimp_register_file_handler_mime (SAVE_PROC, "image/jpeg");
+ gimp_register_save_handler (SAVE_PROC, "jpg,jpeg,jpe", "");
+}
+
+static void
+run (const gchar *name,
+ gint nparams,
+ const GimpParam *param,
+ gint *nreturn_vals,
+ GimpParam **return_vals)
+{
+ static GimpParam values[6];
+ GimpRunMode run_mode;
+ GimpPDBStatusType status = GIMP_PDB_SUCCESS;
+ gint32 image_ID;
+ gint32 drawable_ID;
+ GimpParasite *parasite;
+ 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;
+
+ preview_image_ID = -1;
+ preview_layer_ID = -1;
+
+ orig_quality = 0;
+ orig_subsmp = JPEG_SUBSAMPLING_2x2_1x1_1x1;
+ num_quant_tables = 0;
+
+ if (strcmp (name, LOAD_PROC) == 0)
+ {
+ gboolean resolution_loaded = FALSE;
+
+ switch (run_mode)
+ {
+ case GIMP_RUN_INTERACTIVE:
+ case GIMP_RUN_WITH_LAST_VALS:
+ gimp_ui_init (PLUG_IN_BINARY, FALSE);
+ load_interactive = TRUE;
+ break;
+ default:
+ load_interactive = FALSE;
+ break;
+ }
+
+ image_ID = load_image (param[1].data.d_string, run_mode, FALSE,
+ &resolution_loaded, &error);
+
+ if (image_ID != -1)
+ {
+ GFile *file = g_file_new_for_path (param[1].data.d_string);
+ GimpMetadata *metadata;
+
+ metadata = gimp_image_metadata_load_prepare (image_ID, "image/jpeg",
+ file, NULL);
+
+ if (metadata)
+ {
+ GimpMetadataLoadFlags flags = GIMP_METADATA_LOAD_ALL;
+
+ if (resolution_loaded)
+ flags &= ~GIMP_METADATA_LOAD_RESOLUTION;
+
+ gimp_image_metadata_load_finish (image_ID, "image/jpeg",
+ metadata, flags,
+ load_interactive);
+
+ g_object_unref (metadata);
+ }
+
+ g_object_unref (file);
+
+ *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, LOAD_THUMB_PROC) == 0)
+ {
+ if (nparams < 2)
+ {
+ status = GIMP_PDB_CALLING_ERROR;
+ }
+ else
+ {
+ GFile *file = g_file_new_for_path (param[0].data.d_string);
+ gint width = 0;
+ gint height = 0;
+ GimpImageType type = -1;
+
+ image_ID = load_thumbnail_image (file, &width, &height, &type,
+ &error);
+
+ g_object_unref (file);
+
+ if (image_ID != -1)
+ {
+ *nreturn_vals = 6;
+ values[1].type = GIMP_PDB_IMAGE;
+ values[1].data.d_image = image_ID;
+ values[2].type = GIMP_PDB_INT32;
+ values[2].data.d_int32 = width;
+ values[3].type = GIMP_PDB_INT32;
+ values[3].data.d_int32 = height;
+ values[4].type = GIMP_PDB_INT32;
+ values[4].data.d_int32 = type;
+ values[5].type = GIMP_PDB_INT32;
+ values[5].data.d_int32 = 1; /* num_layers */
+ }
+ else
+ {
+ status = GIMP_PDB_EXECUTION_ERROR;
+ }
+ }
+ }
+ else if (strcmp (name, SAVE_PROC) == 0)
+ {
+ GimpMetadata *metadata;
+ GimpMetadataSaveFlags metadata_flags;
+ gint32 orig_image_ID;
+ GimpExportReturn export = GIMP_EXPORT_CANCEL;
+
+ image_ID = param[1].data.d_int32;
+ drawable_ID = param[2].data.d_int32;
+
+ orig_image_ID = image_ID;
+
+ 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, "JPEG",
+ GIMP_EXPORT_CAN_HANDLE_RGB |
+ GIMP_EXPORT_CAN_HANDLE_GRAY);
+
+ switch (export)
+ {
+ case GIMP_EXPORT_EXPORT:
+ {
+ gchar *tmp = g_filename_from_utf8 (_("Export Preview"), -1,
+ NULL, NULL, NULL);
+ if (tmp)
+ {
+ gimp_image_set_filename (image_ID, tmp);
+ g_free (tmp);
+ }
+
+ display_ID = -1;
+ }
+ break;
+
+ case GIMP_EXPORT_IGNORE:
+ break;
+
+ case GIMP_EXPORT_CANCEL:
+ values[0].data.d_status = GIMP_PDB_CANCEL;
+ return;
+ break;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ /* Initialize with hardcoded defaults */
+ load_defaults ();
+
+ /* Override the defaults with preferences. */
+ metadata = gimp_image_metadata_save_prepare (orig_image_ID,
+ "image/jpeg",
+ &metadata_flags);
+ jsvals.save_exif = (metadata_flags & GIMP_METADATA_SAVE_EXIF) != 0;
+ jsvals.save_xmp = (metadata_flags & GIMP_METADATA_SAVE_XMP) != 0;
+ jsvals.save_iptc = (metadata_flags & GIMP_METADATA_SAVE_IPTC) != 0;
+ jsvals.save_thumbnail = (metadata_flags & GIMP_METADATA_SAVE_THUMBNAIL) != 0;
+ jsvals.save_profile = (metadata_flags & GIMP_METADATA_SAVE_COLOR_PROFILE) != 0;
+
+ parasite = gimp_image_get_parasite (orig_image_ID, "gimp-comment");
+ if (parasite)
+ {
+ image_comment = g_strndup (gimp_parasite_data (parasite),
+ gimp_parasite_data_size (parasite));
+ gimp_parasite_free (parasite);
+ }
+
+ /* Override preferences from JPG export defaults (if saved). */
+ load_parasite ();
+
+ switch (run_mode)
+ {
+ case GIMP_RUN_NONINTERACTIVE:
+ /* Make sure all the arguments are there! */
+ /* pw - added two more progressive and comment */
+ /* sg - added subsampling, preview, baseline, restarts and DCT */
+ if (nparams != 14)
+ {
+ status = GIMP_PDB_CALLING_ERROR;
+ }
+ else
+ {
+ /* Once the PDB gets default parameters, remove this hack */
+ if (param[5].data.d_float >= 0.01)
+ {
+ jsvals.quality = 100.0 * param[5].data.d_float;
+ jsvals.smoothing = param[6].data.d_float;
+ jsvals.optimize = param[7].data.d_int32;
+ jsvals.progressive = param[8].data.d_int32;
+ jsvals.baseline = param[11].data.d_int32;
+ jsvals.subsmp = param[10].data.d_int32;
+ jsvals.restart = param[12].data.d_int32;
+ jsvals.dct = param[13].data.d_int32;
+
+ /* free up the default -- wasted some effort earlier */
+ g_free (image_comment);
+ image_comment = g_strdup (param[9].data.d_string);
+ }
+
+ jsvals.preview = FALSE;
+
+ if (jsvals.quality < 0.0 || jsvals.quality > 100.0)
+ status = GIMP_PDB_CALLING_ERROR;
+ else if (jsvals.smoothing < 0.0 || jsvals.smoothing > 1.0)
+ status = GIMP_PDB_CALLING_ERROR;
+ else if (jsvals.subsmp < 0 || jsvals.subsmp > 3)
+ status = GIMP_PDB_CALLING_ERROR;
+ else if (jsvals.dct < 0 || jsvals.dct > 2)
+ status = GIMP_PDB_CALLING_ERROR;
+ }
+ break;
+
+ case GIMP_RUN_INTERACTIVE:
+ case GIMP_RUN_WITH_LAST_VALS:
+ /* restore the values found when loading the file (if available) */
+ jpeg_restore_original_settings (orig_image_ID,
+ &orig_quality,
+ &orig_subsmp,
+ &num_quant_tables);
+
+ /* load up the previously used values (if file was saved once) */
+ parasite = gimp_image_get_parasite (orig_image_ID,
+ "jpeg-save-options");
+ if (parasite)
+ {
+ const JpegSaveVals *save_vals = gimp_parasite_data (parasite);
+
+ jsvals.quality = save_vals->quality;
+ jsvals.smoothing = save_vals->smoothing;
+ jsvals.optimize = save_vals->optimize;
+ jsvals.progressive = save_vals->progressive;
+ jsvals.baseline = save_vals->baseline;
+ jsvals.subsmp = save_vals->subsmp;
+ jsvals.restart = save_vals->restart;
+ jsvals.dct = save_vals->dct;
+ jsvals.preview = save_vals->preview;
+ jsvals.save_exif = save_vals->save_exif;
+ jsvals.save_thumbnail = save_vals->save_thumbnail;
+ jsvals.save_xmp = save_vals->save_xmp;
+ jsvals.save_iptc = save_vals->save_iptc;
+ jsvals.use_orig_quality = save_vals->use_orig_quality;
+
+ gimp_parasite_free (parasite);
+ }
+ else
+ {
+ /* We are called with GIMP_RUN_WITH_LAST_VALS but this image
+ * doesn't have a "jpeg-save-options" parasite. It's better
+ * to prompt the user with a dialog now so that she has control
+ * over the JPEG encoding parameters.
+ */
+ run_mode = GIMP_RUN_INTERACTIVE;
+
+ /* If this image was loaded from a JPEG file and has not been
+ * saved yet, try to use some of the settings from the
+ * original file if they are better than the default values.
+ */
+ if (orig_quality > jsvals.quality)
+ {
+ jsvals.quality = orig_quality;
+ }
+
+ /* Skip changing subsampling to original if we already have best
+ * setting or if original have worst setting */
+ if (!(jsvals.subsmp == JPEG_SUBSAMPLING_1x1_1x1_1x1 ||
+ orig_subsmp == JPEG_SUBSAMPLING_2x2_1x1_1x1))
+ {
+ jsvals.subsmp = orig_subsmp;
+ }
+
+ if (orig_quality == jsvals.quality &&
+ orig_subsmp == jsvals.subsmp)
+ {
+ jsvals.use_orig_quality = TRUE;
+ }
+ }
+ break;
+ }
+
+ if (run_mode == GIMP_RUN_INTERACTIVE)
+ {
+ if (jsvals.preview)
+ {
+ /* we freeze undo saving so that we can avoid sucking up
+ * tile cache with our unneeded preview steps. */
+ gimp_image_undo_freeze (image_ID);
+
+ undo_touched = TRUE;
+ }
+
+ /* prepare for the preview */
+ preview_image_ID = image_ID;
+ orig_image_ID_global = orig_image_ID;
+ drawable_ID_global = drawable_ID;
+
+ /* First acquire information with a dialog */
+ status = (save_dialog () ? GIMP_PDB_SUCCESS : GIMP_PDB_CANCEL);
+
+ if (undo_touched)
+ {
+ /* thaw undo saving and flush the displays to have them
+ * reflect the current shortcuts */
+ gimp_image_undo_thaw (image_ID);
+ gimp_displays_flush ();
+ }
+ }
+
+ if (status == GIMP_PDB_SUCCESS)
+ {
+ if (! save_image (param[3].data.d_string,
+ image_ID, drawable_ID, orig_image_ID, FALSE,
+ &error))
+ {
+ status = GIMP_PDB_EXECUTION_ERROR;
+ }
+ }
+
+ if (export == GIMP_EXPORT_EXPORT)
+ {
+ /* If the image was exported, delete the new display. */
+ /* This also deletes the image.
+ */
+
+ if (display_ID != -1)
+ gimp_display_delete (display_ID);
+ else
+ gimp_image_delete (image_ID);
+ }
+
+ if (status == GIMP_PDB_SUCCESS)
+ {
+ /* pw - now we need to change the defaults to be whatever
+ * was used to save this image. Dump the old parasites
+ * and add new ones.
+ */
+
+ gimp_image_detach_parasite (orig_image_ID, "gimp-comment");
+ if (image_comment && strlen (image_comment))
+ {
+ parasite = gimp_parasite_new ("gimp-comment",
+ GIMP_PARASITE_PERSISTENT,
+ strlen (image_comment) + 1,
+ image_comment);
+ gimp_image_attach_parasite (orig_image_ID, parasite);
+ gimp_parasite_free (parasite);
+ }
+
+ parasite = gimp_parasite_new ("jpeg-save-options",
+ 0, sizeof (jsvals), &jsvals);
+ gimp_image_attach_parasite (orig_image_ID, parasite);
+ gimp_parasite_free (parasite);
+
+ /* write metadata */
+
+ if (metadata)
+ {
+ GFile *file;
+
+ gimp_metadata_set_bits_per_sample (metadata, 8);
+
+ if (jsvals.save_exif)
+ metadata_flags |= GIMP_METADATA_SAVE_EXIF;
+ else
+ metadata_flags &= ~GIMP_METADATA_SAVE_EXIF;
+
+ if (jsvals.save_xmp)
+ metadata_flags |= GIMP_METADATA_SAVE_XMP;
+ else
+ metadata_flags &= ~GIMP_METADATA_SAVE_XMP;
+
+ if (jsvals.save_iptc)
+ metadata_flags |= GIMP_METADATA_SAVE_IPTC;
+ else
+ metadata_flags &= ~GIMP_METADATA_SAVE_IPTC;
+
+ if (jsvals.save_thumbnail)
+ metadata_flags |= GIMP_METADATA_SAVE_THUMBNAIL;
+ else
+ metadata_flags &= ~GIMP_METADATA_SAVE_THUMBNAIL;
+
+ if (jsvals.save_profile)
+ metadata_flags |= GIMP_METADATA_SAVE_COLOR_PROFILE;
+ else
+ metadata_flags &= ~GIMP_METADATA_SAVE_COLOR_PROFILE;
+
+ file = g_file_new_for_path (param[3].data.d_string);
+ if (! gimp_image_metadata_save_finish (orig_image_ID,
+ "image/jpeg",
+ metadata, metadata_flags,
+ file, &error))
+ {
+ if (error)
+ {
+ /* Even though a failure to write metadata is not enough
+ reason to say we failed to save the image, we should
+ still notify the user about the problem. */
+ g_message ("%s: saving metadata failed: %s",
+ G_STRFUNC, error->message);
+ g_error_free (error);
+ }
+ }
+ g_object_unref (file);
+ }
+ }
+
+ if (metadata)
+ g_object_unref (metadata);
+ }
+ 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;
+}
+
+/*
+ * Here's the routine that will replace the standard error_exit method:
+ */
+
+void
+my_error_exit (j_common_ptr cinfo)
+{
+ /* cinfo->err really points to a my_error_mgr struct, so coerce pointer */
+ my_error_ptr myerr = (my_error_ptr) cinfo->err;
+
+ /* Always display the message. */
+ /* We could postpone this until after returning, if we chose. */
+ (*cinfo->err->output_message) (cinfo);
+
+ /* Return control to the setjmp point */
+ longjmp (myerr->setjmp_buffer, 1);
+}
+
+
+void
+my_output_message (j_common_ptr cinfo)
+{
+ gchar buffer[JMSG_LENGTH_MAX + 1];
+
+ (*cinfo->err->format_message)(cinfo, buffer);
+
+ g_message ("%s", buffer);
+}
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