diff options
Diffstat (limited to 'app/xcf/xcf-write.c')
| -rw-r--r-- | app/xcf/xcf-write.c | 339 |
1 files changed, 339 insertions, 0 deletions
diff --git a/app/xcf/xcf-write.c b/app/xcf/xcf-write.c new file mode 100644 index 0000000..a154bf5 --- /dev/null +++ b/app/xcf/xcf-write.c @@ -0,0 +1,339 @@ +/* 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; + } +} |