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1ba2e11c91780ea99b51eb3dff4d4f9fb6f15cb9
gimp/plug-ins/common/file-pix.c
Jehan ab851924dd plug-ins: make various usage of g_file_replace() safer. 
As I did on app/, finalizing an output stream also implicitly flushes
and closes it. Hence if an export ended with an error, we'd end up with
incomplete data file (possibly overwriting a previously exported image).
Only 2 plug-ins I haven't fixed yet are file-tiff-io and file-gif-save.
The later one don't even clean up its memory (which somehow is good here
as at least the output stream is never finalized hence sane files are
not overwritten in case of errors). As for the former (TIFF plug-in), it
doesn't even seem to have any error control AFAICS, apart from printing
error messages on standard error output.

(cherry picked from commit 66ec467217)
2018-12-07 00:51:13 +01:00

737 lines
20 KiB
C
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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
* Alias|Wavefront pix/matte image reading and writing code
* Copyright (C) 1997 Mike Taylor
* (email: mtaylor@aw.sgi.com, WWW: http://reality.sgi.com/mtaylor)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
/* This plug-in was written using the online documentation from
* Alias|Wavefront Inc's PowerAnimator product.
*
* Bug reports or suggestions should be e-mailed to mtaylor@aw.sgi.com
*/
/* Event history:
* V 1.0, MT, 02-Jul-97: initial version of plug-in
* V 1.1, MT, 04-Dec-97: added .als file extension
*/
/* Features
* - loads and exports
* - 24-bit (.pix)
* - 8-bit (.matte, .alpha, or .mask) images
*
* NOTE: pix and matte files do not support alpha channels or indexed
* color, so neither does this plug-in
*/
#include "config.h"
#include <errno.h>
#include <string.h>
#include <glib/gstdio.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define LOAD_PROC "file-pix-load"
#define SAVE_PROC "file-pix-save"
#define PLUG_IN_BINARY "file-pix"
#define PLUG_IN_ROLE "gimp-file-pix"
/* #define PIX_DEBUG */
#ifdef PIX_DEBUG
# define PIX_DEBUG_PRINT(a,b) g_printerr (a,b)
#else
# define PIX_DEBUG_PRINT(a,b)
#endif
/**************
* Prototypes *
**************/
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 (GFile *file,
GError **error);
static gboolean save_image (GFile *file,
gint32 image_ID,
gint32 drawable_ID,
GError **error);
static gboolean get_short (GInputStream *input,
guint16 *value,
GError **error);
static gboolean put_short (GOutputStream *output,
guint16 value,
GError **error);
/******************
* Implementation *
******************/
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
MAIN ()
static void
query (void)
{
/*
* Description:
* Register the services provided by this plug-in
*/
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 entered" }
};
static const GimpParamDef load_return_vals[] =
{
{ GIMP_PDB_IMAGE, "image", "Output image" }
};
static const GimpParamDef save_args[] =
{
{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
{ GIMP_PDB_IMAGE, "image", "Input image" },
{ GIMP_PDB_DRAWABLE, "drawable", "Drawable to export" },
{ GIMP_PDB_STRING, "filename", "The name of the file to export the image in" },
{ GIMP_PDB_STRING, "raw-filename", "The name of the file to export the image in" }
};
gimp_install_procedure (LOAD_PROC,
"loads files of the Alias|Wavefront Pix file format",
"loads files of the Alias|Wavefront Pix file format",
"Michael Taylor",
"Michael Taylor",
"1997",
N_("Alias Pix image"),
NULL,
GIMP_PLUGIN,
G_N_ELEMENTS (load_args),
G_N_ELEMENTS (load_return_vals),
load_args, load_return_vals);
gimp_register_file_handler_uri (LOAD_PROC);
gimp_register_load_handler (LOAD_PROC, "pix,matte,mask,alpha,als", "");
gimp_install_procedure (SAVE_PROC,
"export file in the Alias|Wavefront pix/matte file format",
"export file in the Alias|Wavefront pix/matte file format",
"Michael Taylor",
"Michael Taylor",
"1997",
N_("Alias Pix image"),
"RGB*, GRAY*, INDEXED*",
GIMP_PLUGIN,
G_N_ELEMENTS (save_args), 0,
save_args, NULL);
gimp_register_file_handler_uri (SAVE_PROC);
gimp_register_save_handler (SAVE_PROC, "pix,matte,mask,alpha,als", "");
}
/*
* Description:
* perform registered plug-in function
*
* Arguments:
* name - name of the function to perform
* nparams - number of parameters passed to the function
* param - parameters passed to the function
* nreturn_vals - number of parameters returned by the function
* return_vals - parameters returned by the function
*/
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[2];
GimpRunMode run_mode;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
gint32 image_ID;
gint32 drawable_ID;
GimpExportReturn export = GIMP_EXPORT_CANCEL;
GError *error = NULL;
INIT_I18N ();
gegl_init (NULL, NULL);
run_mode = param[0].data.d_int32;
*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)
{
/* Perform the image load */
image_ID = load_image (g_file_new_for_uri (param[1].data.d_string),
&error);
if (image_ID != -1)
{
/* The image load was successful */
*nreturn_vals = 2;
values[1].type = GIMP_PDB_IMAGE;
values[1].data.d_image = image_ID;
}
else
{
/* The image load failed */
status = GIMP_PDB_EXECUTION_ERROR;
}
}
else if (strcmp (name, SAVE_PROC) == 0)
{
image_ID = param[1].data.d_int32;
drawable_ID = param[2].data.d_int32;
/* eventually export the image */
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
case GIMP_RUN_WITH_LAST_VALS:
gimp_ui_init (PLUG_IN_BINARY, FALSE);
export = gimp_export_image (&image_ID, &drawable_ID, "PIX",
GIMP_EXPORT_CAN_HANDLE_RGB |
GIMP_EXPORT_CAN_HANDLE_GRAY |
GIMP_EXPORT_CAN_HANDLE_INDEXED);
if (export == GIMP_EXPORT_CANCEL)
{
values[0].data.d_status = GIMP_PDB_CANCEL;
return;
}
break;
default:
break;
}
if (status == GIMP_PDB_SUCCESS)
{
if (! save_image (g_file_new_for_uri (param[3].data.d_string),
image_ID, drawable_ID,
&error))
{
status = GIMP_PDB_EXECUTION_ERROR;
}
}
if (export == GIMP_EXPORT_EXPORT)
gimp_image_delete (image_ID);
}
else
{
status = GIMP_PDB_CALLING_ERROR;
}
if (status != GIMP_PDB_SUCCESS && error)
{
*nreturn_vals = 2;
values[1].type = GIMP_PDB_STRING;
values[1].data.d_string = error->message;
}
values[0].data.d_status = status;
}
/*
* Description:
* Reads a 16-bit integer from a file in such a way that the machine's
* byte order should not matter.
*/
static gboolean
get_short (GInputStream *input,
guint16 *value,
GError **error)
{
guchar buf[2];
gsize bytes_read;
if (! g_input_stream_read_all (input, buf, 2,
&bytes_read, NULL, error) ||
bytes_read != 2)
{
return FALSE;
}
if (value)
*value = (buf[0] << 8) + buf[1];
return TRUE;
}
/*
* Description:
* Writes a 16-bit integer to a file in such a way that the machine's
* byte order should not matter.
*/
static gboolean
put_short (GOutputStream *output,
guint16 value,
GError **error)
{
guchar buf[2];
buf[0] = (value >> 8) & 0xFF;
buf[1] = value & 0xFF;
return g_output_stream_write_all (output, buf, 2, NULL, NULL, error);
}
/*
* Description:
* load the given image into gimp
*
* Arguments:
* filename - name on the file to read
*
* Return Value:
* Image id for the loaded image
*
*/
static gint32
load_image (GFile *file,
GError **error)
{
GInputStream *input;
GeglBuffer *buffer;
GimpImageBaseType imgtype;
GimpImageType gdtype;
guchar *dest;
guchar *dest_base;
gint32 image_ID;
gint32 layer_ID;
gushort width, height, depth;
gint i, j, tile_height, row;
PIX_DEBUG_PRINT ("Opening file: %s\n", filename);
gimp_progress_init_printf (_("Opening '%s'"),
g_file_get_parse_name (file));
input = G_INPUT_STREAM (g_file_read (file, NULL, error));
if (! input)
return -1;
/* Read header information */
if (! get_short (input, &width, error) ||
! get_short (input, &height, error) ||
! get_short (input, NULL, error) || /* Discard obsolete field */
! get_short (input, NULL, error) || /* Discard obsolete field */
! get_short (input, &depth, error))
{
g_object_unref (input);
return -1;
}
PIX_DEBUG_PRINT ("Width %hu\n", width);
PIX_DEBUG_PRINT ("Height %hu\n", height);
if (depth == 8)
{
/* Loading a matte file */
imgtype = GIMP_GRAY;
gdtype = GIMP_GRAY_IMAGE;
}
else if (depth == 24)
{
/* Loading an RGB file */
imgtype = GIMP_RGB;
gdtype = GIMP_RGB_IMAGE;
}
else
{
/* Header is invalid */
g_object_unref (input);
return -1;
}
image_ID = gimp_image_new (width, height, imgtype);
gimp_image_set_filename (image_ID, g_file_get_uri (file));
layer_ID = gimp_layer_new (image_ID, _("Background"),
width, height,
gdtype,
100,
gimp_image_get_default_new_layer_mode (image_ID));
gimp_image_insert_layer (image_ID, layer_ID, -1, 0);
buffer = gimp_drawable_get_buffer (layer_ID);
tile_height = gimp_tile_height ();
if (depth == 24)
{
/* Read a 24-bit Pix image */
dest_base = dest = g_new (guchar, 3 * width * tile_height);
for (i = 0; i < height;)
{
for (dest = dest_base, row = 0;
row < tile_height && i < height;
i++, row++)
{
guchar record[4];
gsize bytes_read;
guchar count;
/* Read a row of the image */
j = 0;
while (j < width)
{
if (! g_input_stream_read_all (input, record, 4,
&bytes_read, NULL, error) ||
bytes_read != 4)
break;
for (count = 0; count < record[0]; ++count)
{
dest[0] = record[3];
dest[1] = record[2];
dest[2] = record[1];
dest += 3;
j++;
if (j >= width)
break;
}
}
}
gegl_buffer_set (buffer, GEGL_RECTANGLE (0, i - row, width, row), 0,
NULL, dest_base, GEGL_AUTO_ROWSTRIDE);
gimp_progress_update ((double) i / (double) height);
}
g_free (dest_base);
}
else
{
/* Read an 8-bit Matte image */
dest_base = dest = g_new (guchar, width * tile_height);
for (i = 0; i < height;)
{
for (dest = dest_base, row = 0;
row < tile_height && i < height;
i++, row++)
{
guchar record[2];
gsize bytes_read;
guchar count;
/* Read a row of the image */
j = 0;
while (j < width)
{
if (! g_input_stream_read_all (input, record, 2,
&bytes_read, NULL, error) ||
bytes_read != 2)
break;
for (count = 0; count < record[0]; ++count)
{
dest[j] = record[1];
j++;
if (j >= width)
break;
}
}
dest += width;
}
gegl_buffer_set (buffer, GEGL_RECTANGLE (0, i - row, width, row), 0,
NULL, dest_base, GEGL_AUTO_ROWSTRIDE);
gimp_progress_update ((double) i / (double) height);
}
g_free (dest_base);
}
g_object_unref (buffer);
g_object_unref (input);
gimp_progress_update (1.0);
return image_ID;
}
/*
* Description:
* save the given file out as an alias pix or matte file
*
* Arguments:
* filename - name of file to save to
* image_ID - ID of image to save
* drawable_ID - current drawable
*/
static gboolean
save_image (GFile *file,
gint32 image_ID,
gint32 drawable_ID,
GError **error)
{
GOutputStream *output;
GeglBuffer *buffer;
const Babl *format;
GCancellable *cancellable;
gint width;
gint height;
gint depth, i, j, row, tile_height, rectHeight;
gboolean savingColor = TRUE;
guchar *src;
guchar *src_base;
gimp_progress_init_printf (_("Exporting '%s'"),
g_file_get_parse_name (file));
output = G_OUTPUT_STREAM (g_file_replace (file,
NULL, FALSE, G_FILE_CREATE_NONE,
NULL, error));
if (! output)
return FALSE;
/* Get info about image */
buffer = gimp_drawable_get_buffer (drawable_ID);
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
savingColor = ! gimp_drawable_is_gray (drawable_ID);
if (savingColor)
format = babl_format ("R'G'B' u8");
else
format = babl_format ("Y' u8");
depth = babl_format_get_bytes_per_pixel (format);
/* Write the image header */
PIX_DEBUG_PRINT ("Width %hu\n", width);
PIX_DEBUG_PRINT ("Height %hu\n", height);
if (! put_short (output, width, error) ||
! put_short (output, height, error) ||
! put_short (output, 0, error) ||
! put_short (output, 0, error))
{
cancellable = g_cancellable_new ();
g_cancellable_cancel (cancellable);
g_output_stream_close (output, cancellable, NULL);
g_object_unref (cancellable);
g_object_unref (output);
g_object_unref (buffer);
return FALSE;
}
tile_height = gimp_tile_height ();
src_base = g_new (guchar, tile_height * width * depth);
if (savingColor)
{
/* Writing a 24-bit Pix image */
if (! put_short (output, 24, error))
goto fail;
for (i = 0; i < height;)
{
rectHeight = (tile_height < (height - i)) ?
tile_height : (height - i);
gegl_buffer_get (buffer, GEGL_RECTANGLE (0, i, width, rectHeight), 1.0,
format, src_base,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
for (src = src_base, row = 0;
row < tile_height && i < height;
i += 1, row += 1)
{
/* Write a row of the image */
guchar record[4];
record[0] = 1;
record[3] = src[0];
record[2] = src[1];
record[1] = src[2];
src += depth;
for (j = 1; j < width; ++j)
{
if ((record[3] != src[0]) ||
(record[2] != src[1]) ||
(record[1] != src[2]) ||
(record[0] == 255))
{
/* Write current RLE record and start a new one */
if (! g_output_stream_write_all (output, record, 4,
NULL, NULL, error))
{
goto fail;
}
record[0] = 1;
record[3] = src[0];
record[2] = src[1];
record[1] = src[2];
}
else
{
/* increment run length in current record */
record[0]++;
}
src += depth;
}
/* Write last record in row */
if (! g_output_stream_write_all (output, record, 4,
NULL, NULL, error))
{
goto fail;
}
}
gimp_progress_update ((double) i / (double) height);
}
}
else
{
/* Writing a 8-bit Matte (Mask) image */
if (! put_short (output, 8, error))
goto fail;
for (i = 0; i < height;)
{
rectHeight = (tile_height < (height - i)) ?
tile_height : (height - i);
gegl_buffer_get (buffer, GEGL_RECTANGLE (0, i, width, rectHeight), 1.0,
format, src_base,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
for (src = src_base, row = 0;
row < tile_height && i < height;
i += 1, row += 1)
{
/* Write a row of the image */
guchar record[2];
record[0] = 1;
record[1] = src[0];
src += depth;
for (j = 1; j < width; ++j)
{
if ((record[1] != src[0]) || (record[0] == 255))
{
/* Write current RLE record and start a new one */
if (! g_output_stream_write_all (output, record, 2,
NULL, NULL, error))
{
goto fail;
}
record[0] = 1;
record[1] = src[0];
}
else
{
/* increment run length in current record */
record[0] ++;
}
src += depth;
}
/* Write last record in row */
if (! g_output_stream_write_all (output, record, 2,
NULL, NULL, error))
{
goto fail;
}
}
gimp_progress_update ((double) i / (double) height);
}
}
g_free (src_base);
g_object_unref (output);
g_object_unref (buffer);
gimp_progress_update (1.0);
return TRUE;
fail:
cancellable = g_cancellable_new ();
g_cancellable_cancel (cancellable);
g_output_stream_close (output, cancellable, NULL);
g_object_unref (cancellable);
g_free (src_base);
g_object_unref (output);
g_object_unref (buffer);
return FALSE;
}
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