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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 <string.h>
#include <gio/gio.h>
#include "core/core-types.h"
#include "xcf-private.h"
#include "xcf-write.h"
#include "gimp-intl.h"
guint
xcf_write_int8 (XcfInfo *info,
const guint8 *data,
gint count,
GError **error)
{
GError *my_error = NULL;
gsize bytes_written = 0;
/* we allow for 'data == NULL && count == 0', which
* g_output_stream_write_all() rejects.
*/
if (count > 0)
{
if (! g_output_stream_write_all (info->output, data, count,
&bytes_written, NULL, &my_error))
{
g_propagate_prefixed_error (error, my_error,
_("Error writing XCF: "));
}
info->cp += bytes_written;
}
return bytes_written;
}
guint
xcf_write_int16 (XcfInfo *info,
const guint16 *data,
gint count,
GError **error)
{
GError *tmp_error = NULL;
gint i;
if (count > 0)
{
for (i = 0; i < count; i++)
{
guint16 tmp = g_htons (data[i]);
xcf_write_int8 (info, (const guint8 *) &tmp, 2, &tmp_error);
if (tmp_error)
{
g_propagate_error (error, tmp_error);
return i * 2;
}
}
}
return count * 2;
}
guint
xcf_write_int32 (XcfInfo *info,
const guint32 *data,
gint count,
GError **error)
{
GError *tmp_error = NULL;
gint i;
if (count > 0)
{
for (i = 0; i < count; i++)
{
guint32 tmp = g_htonl (data[i]);
xcf_write_int8 (info, (const guint8 *) &tmp, 4, &tmp_error);
if (tmp_error)
{
g_propagate_error (error, tmp_error);
return i * 4;
}
}
}
return count * 4;
}
guint
xcf_write_int64 (XcfInfo *info,
const guint64 *data,
gint count,
GError **error)
{
GError *tmp_error = NULL;
gint i;
if (count > 0)
{
for (i = 0; i < count; i++)
{
guint64 tmp = GINT64_TO_BE (data[i]);
xcf_write_int8 (info, (const guint8 *) &tmp, 8, &tmp_error);
if (tmp_error)
{
g_propagate_error (error, tmp_error);
return i * 8;
}
}
}
return count * 8;
}
guint
xcf_write_offset (XcfInfo *info,
const goffset *data,
gint count,
GError **error)
{
if (count > 0)
{
gint i;
for (i = 0; i < count; i++)
{
GError *tmp_error = NULL;
if (info->bytes_per_offset == 4)
{
guint32 tmp = g_htonl (data[i]);
xcf_write_int8 (info, (const guint8 *) &tmp, 4, &tmp_error);
}
else
{
gint64 tmp = GINT64_TO_BE (data[i]);
xcf_write_int8 (info, (const guint8 *) &tmp, 8, &tmp_error);
}
if (tmp_error)
{
g_propagate_error (error, tmp_error);
return i * info->bytes_per_offset;
}
}
}
return count * info->bytes_per_offset;
}
guint
xcf_write_zero_offset (XcfInfo *info,
gint count,
GError **error)
{
if (count > 0)
{
guint8 *tmp;
guint bytes_written = 0;
tmp = g_try_malloc (count * info->bytes_per_offset);
if (! tmp)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error writing XCF: failed to allocate %d bytes of memory."),
count * info->bytes_per_offset);
}
else
{
memset (tmp, 0, count * info->bytes_per_offset);
bytes_written = xcf_write_int8 (info, (const guint8 *) tmp,
count * info->bytes_per_offset, error);
g_free (tmp);
}
return bytes_written;
}
return 0;
}
guint
xcf_write_float (XcfInfo *info,
const gfloat *data,
gint count,
GError **error)
{
return xcf_write_int32 (info,
(const guint32 *)((gconstpointer) data), count,
error);
}
guint
xcf_write_string (XcfInfo *info,
gchar **data,
gint count,
GError **error)
{
GError *tmp_error = NULL;
guint total = 0;
gint i;
for (i = 0; i < count; i++)
{
guint32 tmp;
if (data[i])
tmp = strlen (data[i]) + 1;
else
tmp = 0;
xcf_write_int32 (info, &tmp, 1, &tmp_error);
if (tmp_error)
{
g_propagate_error (error, tmp_error);
return total;
}
if (tmp > 0)
xcf_write_int8 (info, (const guint8 *) data[i], tmp, &tmp_error);
if (tmp_error)
{
g_propagate_error (error, tmp_error);
return total;
}
total += 4 + tmp;
}
return total;
}
guint
xcf_write_component (XcfInfo *info,
gint bpc,
const guint8 *data,
gint count,
GError **error)
{
switch (bpc)
{
case 1:
return xcf_write_int8 (info, data, count, error);
case 2:
return xcf_write_int16 (info, (const guint16 *) data, count, error);
case 4:
return xcf_write_int32 (info, (const guint32 *) data, count, error);
case 8:
return xcf_write_int64 (info, (const guint64 *) data, count, error);
default:
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error writing XCF: unsupported BPC when writing pixel: %d"),
bpc);
}
return 0;
}
void
xcf_write_to_be (gint bpc,
guint8 *data,
gint count)
{
gint i;
switch (bpc)
{
case 1:
break;
case 2:
{
guint16 *d = (guint16 *) data;
for (i = 0; i < count; i++)
d[i] = g_htons (d[i]);
}
break;
case 4:
{
guint32 *d = (guint32 *) data;
for (i = 0; i < count; i++)
d[i] = g_htonl (d[i]);
}
break;
case 8:
{
guint64 *d = (guint64 *) data;
for (i = 0; i < count; i++)
d[i] = GINT64_TO_BE (d[i]);
}
break;
}
}
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