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Fixed adding EXIF tags to correct IFD. Mapped some XMP tags.

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Original commit message from CVS:
Fixed adding EXIF tags to correct IFD. Mapped some XMP tags.
This commit is contained in:
Edgard Lima 2008-01-17 16:10:48 +00:00
parent 631b6a1766
commit 63490f4b48
4 changed files with 385 additions and 86 deletions
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7
ChangeLog
View file

@ -1,3 +1,10 @@
2008-01-17 Edgard Lima <edgard.lima@indt.org.br>
* ext/metadata/TODO:
* ext/metadata/metadataexif.c:
* ext/metadata/metadataxmp.c:
Fixed adding EXIF tags to correct IFD. Mapped some XMP tags.
2008-01-16 Wim Taymans <wim.taymans@collabora.co.uk>
* gst/h264parse/gsth264parse.c: (gst_nal_list_new),

13
ext/metadata/TODO
View file

@ -3,12 +3,11 @@ This file contains a list of things to be done as well some open issues (questio
INFO:
1- I (Edgard Lima - alima - edgard.lima@indt.org.br) will be on vacation until 05-Jan-2008. After that I will be back on it.
2- to see what tags are mapped so far run 'grep -n GST_TAG *.[ch]' into this folder.
1- to see what tags are mapped so far run 'grep -n GST_TAG *.[ch]' into this folder.
TODO:
1- Add individual XMP tags (and more for EXIF and IPTC)
1- Add more individual tags to XMP, EXIF and IPTC
2- Get properties like 'width' and 'height' from caps
3- Review the code (in order to move to gst-plugins-good)
4- Document how the plugin works (atchitecture and interaction beteween modules)
@ -19,10 +18,10 @@ OPEN ISSUES:
2- How to change metadata when the orignal image was modified.
ex: file.jpeg has XMP, then we do filesrc ! metadataparse ! jpegdec ! pngenc ! metadatamux ! files
is the metadata still valid? which fields are no valid anymore?
3- Add GST_TYPE_FRACTION support for GStreamer TAGS
4- currently, in JPEG files, if there is a Photoshop segment, everything inside it but IPTC will be lost. From the point of view of implementation it is easy, but I still don't now how to solve from the point of view of "designing". Anyway I think it is not so important.
3- In EXIF, how to make sure we are compliant with the specification when adding some tag? For example, we are not considerinb what are mandatory (or optional) IFDs for tags.
4- Add GST_TYPE_FRACTION support for GStreamer TAGS
5- currently, in JPEG files, if there is a Photoshop segment, everything inside it but IPTC will be lost. From the point of view of implementation it is easy, but I still don't now how to solve from the point of view of "designing". Anyway I think it is not so important.
6- language is not considered in XMP (How to do it with GStreamer?)
KNOWN BUGS
1- exposure-time, exposure-program and fnumber can't be read from a file saved from scratch (whithout WHOLE_CHUNK from previous file)
I believe it is a bug in libexif

59
ext/metadata/metadataexif.c
View file

@ -88,6 +88,7 @@ typedef struct _tag_MEUserData
typedef struct _tag_MapIntStr
{
ExifTag exif;
ExifIfd ifd;
const gchar *str;
} MapIntStr;
@ -98,21 +99,35 @@ static void exif_content_foreach_entry_func (ExifEntry * entry, void *);
/* *INDENT-OFF* */
static MapIntStr mappedTags[] = {
{EXIF_TAG_MAKE, /*ASCII,*/ GST_TAG_DEVICE_MAKE, /*STRING*/},
{EXIF_TAG_MODEL, /*ASCII,*/ GST_TAG_DEVICE_MODEL, /*STRING*/},
{EXIF_TAG_SOFTWARE, /*ASCII,*/ GST_TAG_CREATOR_TOOL, /*STRING*/},
{EXIF_TAG_X_RESOLUTION, /*RATIONAL,*/ GST_TAG_IMAGE_XRESOLUTION, /*FRACTION*/}, /* inches */
{EXIF_TAG_Y_RESOLUTION, /*RATIONAL,*/ GST_TAG_IMAGE_YRESOLUTION, /*FRACTION*/}, /* inches */
{EXIF_TAG_EXPOSURE_TIME, /*RATIONAL,*/ GST_TAG_CAPTURE_EXPOSURE_TIME, /*FRACTION*/},
{EXIF_TAG_FNUMBER, /*RATIONAL,*/ GST_TAG_CAPTURE_FNUMBER, /*FRACTION*/},
{EXIF_TAG_EXPOSURE_PROGRAM, /*SHORT,*/ GST_TAG_CAPTURE_EXPOSURE_PROGRAM, /*UINT*/},
{EXIF_TAG_BRIGHTNESS_VALUE, /*SRATIONAL,*/ GST_TAG_CAPTURE_BRIGHTNESS, /*FRACTION*/},
{EXIF_TAG_WHITE_BALANCE, /*SHORT,*/ GST_TAG_CAPTURE_WHITE_BALANCE, /*UINT*/},
{EXIF_TAG_DIGITAL_ZOOM_RATIO, /*RATIONAL,*/ GST_TAG_CAPTURE_DIGITAL_ZOOM, /*FRACTION*/},
{EXIF_TAG_GAIN_CONTROL, /*SHORT,*/ GST_TAG_CAPTURE_GAIN, /*UINT*/},
{EXIF_TAG_CONTRAST, /*SHORT,*/ GST_TAG_CAPTURE_CONTRAST, /*INT*/},
{EXIF_TAG_SATURATION, /*SHORT,*/ GST_TAG_CAPTURE_SATURATION, /*INT*/},
{0, NULL}
{EXIF_TAG_MAKE, /*ASCII,*/ EXIF_IFD_0,
GST_TAG_DEVICE_MAKE, /*STRING*/},
{EXIF_TAG_MODEL, /*ASCII,*/ EXIF_IFD_0,
GST_TAG_DEVICE_MODEL, /*STRING*/},
{EXIF_TAG_SOFTWARE, /*ASCII,*/ EXIF_IFD_0,
GST_TAG_CREATOR_TOOL, /*STRING*/},
{EXIF_TAG_X_RESOLUTION, /*RATIONAL,*/ EXIF_IFD_0,
GST_TAG_IMAGE_XRESOLUTION, /*FRACTION*/}, /* inches */
{EXIF_TAG_Y_RESOLUTION, /*RATIONAL,*/ EXIF_IFD_0,
GST_TAG_IMAGE_YRESOLUTION, /*FRACTION*/}, /* inches */
{EXIF_TAG_EXPOSURE_TIME, /*RATIONAL,*/ EXIF_IFD_EXIF,
GST_TAG_CAPTURE_EXPOSURE_TIME, /*FRACTION*/},
{EXIF_TAG_FNUMBER, /*RATIONAL,*/ EXIF_IFD_EXIF,
GST_TAG_CAPTURE_FNUMBER, /*FRACTION*/},
{EXIF_TAG_EXPOSURE_PROGRAM, /*SHORT,*/ EXIF_IFD_EXIF,
GST_TAG_CAPTURE_EXPOSURE_PROGRAM, /*UINT*/},
{EXIF_TAG_BRIGHTNESS_VALUE, /*SRATIONAL,*/ EXIF_IFD_0,
GST_TAG_CAPTURE_BRIGHTNESS, /*FRACTION*/},
{EXIF_TAG_WHITE_BALANCE, /*SHORT,*/ EXIF_IFD_0,
GST_TAG_CAPTURE_WHITE_BALANCE, /*UINT*/},
{EXIF_TAG_DIGITAL_ZOOM_RATIO, /*RATIONAL,*/ EXIF_IFD_0,
GST_TAG_CAPTURE_DIGITAL_ZOOM, /*FRACTION*/},
{EXIF_TAG_GAIN_CONTROL, /*SHORT,*/ EXIF_IFD_0,
GST_TAG_CAPTURE_GAIN, /*UINT*/},
{EXIF_TAG_CONTRAST, /*SHORT,*/ EXIF_IFD_0,
GST_TAG_CAPTURE_CONTRAST, /*INT*/},
{EXIF_TAG_SATURATION, /*SHORT,*/ EXIF_IFD_0,
GST_TAG_CAPTURE_SATURATION, /*INT*/},
{0, EXIF_IFD_COUNT, NULL}
};
/* *INDENT-ON* */
@ -134,13 +149,15 @@ metadataparse_exif_get_tag_from_exif (ExifTag exif, GType * type)
}
static ExifTag
metadataparse_exif_get_exif_from_tag (const gchar * tag, GType * type)
metadataparse_exif_get_exif_from_tag (const gchar * tag, GType * type,
ExifIfd * ifd)
{
int i = 0;
while (mappedTags[i].exif) {
if (0 == strcmp (mappedTags[i].str, tag)) {
*type = gst_tag_get_type (tag);
*ifd = mappedTags[i].ifd;
break;
}
++i;
@ -361,13 +378,12 @@ done:
" Title: %s\n"
" Description: %s\n",
entry,
exif_tag_get_name_in_ifd (entry->tag, EXIF_IFD_0),
exif_tag_get_name (entry->tag),
exif_format_get_name (entry->format),
entry->size,
(int) (entry->components),
exif_entry_get_value (entry, buf, sizeof (buf)),
exif_tag_get_title_in_ifd (entry->tag, EXIF_IFD_0),
exif_tag_get_description_in_ifd (entry->tag, EXIF_IFD_0));
exif_tag_get_title (entry->tag), exif_tag_get_description (entry->tag));
return;
@ -449,9 +465,10 @@ metadataexif_for_each_tag_in_list (const GstTagList * list, const gchar * tag,
ExifTag exif_tag;
GType type;
ExifEntry *entry = NULL;
ExifIfd ifd;
const ExifByteOrder byte_order = exif_data_get_byte_order (ed);
exif_tag = metadataparse_exif_get_exif_from_tag (tag, &type);
exif_tag = metadataparse_exif_get_exif_from_tag (tag, &type, &ifd);
if (!exif_tag)
goto done;
@ -462,7 +479,7 @@ metadataexif_for_each_tag_in_list (const GstTagList * list, const gchar * tag,
exif_entry_ref (entry);
else {
entry = exif_entry_new ();
exif_content_add_entry (ed->ifd[EXIF_IFD_0], entry);
exif_content_add_entry (ed->ifd[ifd], entry);
exif_entry_initialize (entry, exif_tag);
}

392
ext/metadata/metadataxmp.c
View file

@ -88,14 +88,64 @@ metadatamux_xmp_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
#define XMP_SCHEMA_NODE 0x80000000UL
void
metadataparse_xmp_iter_array (XmpPtr xmp, const char *schema, const char *path);
typedef struct _tag_SchemaTagMap
{
const gchar *xmp_tag;
const gchar *gst_tag;
} SchemaTagMap;
typedef struct _tag_SchemaMap
{
const gchar *schema;
const gchar *prefix;
const guint8 prefix_len;
const SchemaTagMap *tags_map;
} SchemaMap;
static const SchemaTagMap schema_map_dublin_tags_map[] = {
{"description", GST_TAG_DESCRIPTION},
{"title", GST_TAG_TITLE},
{"rights", GST_TAG_COPYRIGHT},
{NULL, NULL}
};
static const SchemaMap schema_map_dublin = { "http://purl.org/dc/elements/1.1/",
"dc:",
3,
schema_map_dublin_tags_map
};
static const SchemaMap *schemas_map[] = {
&schema_map_dublin,
NULL
};
static void
metadataparse_xmp_iter_simple (const char *schema, const char *path,
const char *value);
metadataparse_xmp_iter_add_to_tag_list (GstTagList * taglist,
GstTagMergeMode mode, const char *path, const char *value,
const SchemaMap * schema_map, const uint32_t opt);
static void metadataparse_xmp_iter (XmpPtr xmp, XmpIteratorPtr iter);
static void
metadataparse_xmp_iter_array (GstTagList * taglist, GstTagMergeMode mode,
XmpPtr xmp, const char *schema, const char *path,
const SchemaMap * schema_map);
static void
metadataparse_xmp_iter_node_schema (GstTagList * taglist, GstTagMergeMode mode,
XmpPtr xmp, const char *schema, const char *path);
static void
metadataparse_xmp_iter_simple (GstTagList * taglist, GstTagMergeMode mode,
const char *schema, const char *path, const char *value,
const SchemaMap * schema_map);
static void
metadataparse_xmp_iter_simple_qual (GstTagList * taglist, GstTagMergeMode mode,
const char *schema, const char *path, const char *value,
const SchemaMap * schema_map);
static void
metadataparse_xmp_iter (GstTagList * taglist, GstTagMergeMode mode, XmpPtr xmp);
gboolean
metadataparse_xmp_init (void)
@ -116,7 +166,6 @@ metadataparse_xmp_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
const guint8 *buf;
guint32 size;
XmpPtr xmp = NULL;
XmpIteratorPtr xmp_iter = NULL;
if (adapter == NULL || (size = gst_adapter_available (adapter)) == 0) {
goto done;
@ -135,19 +184,10 @@ metadataparse_xmp_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
if (!xmp)
goto done;
xmp_iter = xmp_iterator_new (xmp, NULL, NULL, XMP_ITER_JUSTCHILDREN);
if (!xmp_iter)
goto done;
metadataparse_xmp_iter (xmp, xmp_iter);
metadataparse_xmp_iter (taglist, mode, xmp);
done:
if (xmp_iter) {
xmp_iterator_free (xmp_iter);
}
if (xmp) {
xmp_free (xmp);
}
@ -156,95 +196,309 @@ done:
}
static const SchemaTagMap *
metadataparse_get_tagsmap_from_gsttag (const SchemaMap * schema_map,
const gchar * tag)
{
SchemaTagMap *tags_map = NULL;
int i;
if (NULL == schema_map)
goto done;
for (i = 0; schema_map->tags_map[i].gst_tag; i++) {
if (0 == strcmp (schema_map->tags_map[i].gst_tag, tag)) {
tags_map = (SchemaTagMap *) & schema_map->tags_map[i];
break;
}
}
done:
return tags_map;
}
static const SchemaTagMap *
metadataparse_get_tagsmap_from_path (const SchemaMap * schema_map,
const gchar * path, uint32_t opt)
{
GString *string = NULL;
gchar *ch;
SchemaTagMap *tags_map = NULL;
if (NULL == schema_map)
goto done;
tags_map = (SchemaTagMap *) schema_map->tags_map;
if (XMP_HAS_PROP_QUALIFIERS (opt) || XMP_IS_ARRAY_ALTTEXT (opt)) {
string = g_string_new (path);
/* remove the language qualifier */
ch = string->str + string->len - 3;
while (ch != string->str + schema_map->prefix_len) {
if (*ch == '[') {
*ch = '\0';
}
--ch;
}
} else {
ch = (gchar *) path + schema_map->prefix_len;
}
while (tags_map->xmp_tag) {
if (0 == strcmp (tags_map->xmp_tag, ch))
break;
tags_map++;
}
done:
if (string)
g_string_free (string, TRUE);
return tags_map;
}
static void
metadataparse_xmp_iter_add_to_tag_list (GstTagList * taglist,
GstTagMergeMode mode, const char *path, const char *value,
const SchemaMap * schema_map, const uint32_t opt)
{
const SchemaTagMap *smaptag =
metadataparse_get_tagsmap_from_path (schema_map, path, opt);
if (NULL == smaptag)
goto done;
if (NULL == smaptag->gst_tag)
goto done;
GType type = gst_tag_get_type (smaptag->gst_tag);
switch (type) {
case G_TYPE_STRING:
gst_tag_list_add (taglist, mode, smaptag->gst_tag, value, NULL);
break;
default:
break;
}
done:
return;
}
void
metadataparse_xmp_iter_simple_qual (const char *schema, const char *path,
const char *value)
metadataparse_xmp_iter_simple_qual (GstTagList * taglist, GstTagMergeMode mode,
const char *schema, const char *path, const char *value,
const SchemaMap * schema_map)
{
GString *string = g_string_new (path);
gchar *ch;
/* remove the language qualifier */
ch = string->str + string->len - 3;
while (ch != string->str) {
while (ch != string->str + schema_map->prefix_len) {
if (*ch == '[') {
*ch = '\0';
}
--ch;
}
GST_LOG (" %s = %s\n", string->str, value);
GST_LOG (" %s = %s", string->str, value);
metadataparse_xmp_iter_add_to_tag_list (taglist, mode, path, value,
schema_map, XMP_PROP_HAS_QUALIFIERS);
g_string_free (string, TRUE);
}
void
metadataparse_xmp_iter_simple (const char *schema, const char *path,
const char *value)
{
GST_LOG (" %s = %s\n", path, value);
}
void
metadataparse_xmp_iter_array (XmpPtr xmp, const char *schema, const char *path)
metadataparse_xmp_iter_simple (GstTagList * taglist, GstTagMergeMode mode,
const char *schema, const char *path, const char *value,
const SchemaMap * schema_map)
{
GST_LOG (" %s = %s", path, value);
XmpIteratorPtr xmp_iter = NULL;
xmp_iter = xmp_iterator_new (xmp, schema, path, XMP_ITER_JUSTCHILDREN);
if (xmp_iter) {
metadataparse_xmp_iter (xmp, xmp_iter);
xmp_iterator_free (xmp_iter);
}
metadataparse_xmp_iter_add_to_tag_list (taglist, mode, path, value,
schema_map, 0);
}
void
metadataparse_xmp_iter (XmpPtr xmp, XmpIteratorPtr iter)
metadataparse_xmp_iter_array (GstTagList * taglist, GstTagMergeMode mode,
XmpPtr xmp, const char *schema, const char *path,
const SchemaMap * schema_map)
{
XmpStringPtr xstr_schema = xmp_string_new ();
XmpStringPtr xstr_path = xmp_string_new ();
XmpStringPtr xstr_prop = xmp_string_new ();
uint32_t opt = 0;
XmpIteratorPtr xmp_iter = NULL;
while (xmp_iterator_next (iter, xstr_schema, xstr_path, xstr_prop, &opt)) {
xmp_iter = xmp_iterator_new (xmp, schema, path, XMP_ITER_JUSTCHILDREN);
if (NULL == xmp_iter)
goto done;
while (xmp_iterator_next (xmp_iter, xstr_schema, xstr_path, xstr_prop, &opt)) {
const char *schema = xmp_string_cstr (xstr_schema);
const char *path = xmp_string_cstr (xstr_path);
const char *value = xmp_string_cstr (xstr_prop);
if (XMP_IS_NODE_SCHEMA (opt)) {
GST_LOG ("%s\n", schema);
metadataparse_xmp_iter_array (xmp, schema, path);
GST_LOG ("Unexpected iteraction");
} else if (XMP_IS_PROP_SIMPLE (opt)) {
if (strcmp (path, "") != 0) {
if (XMP_HAS_PROP_QUALIFIERS (opt)) {
metadataparse_xmp_iter_simple_qual (schema, path, value);
/* ignore language qualifier, just get the first */
metadataparse_xmp_iter_simple_qual (taglist, mode, schema, path,
value, schema_map);
} else {
metadataparse_xmp_iter_simple (schema, path, value);
metadataparse_xmp_iter_simple (taglist, mode, schema, path, value,
schema_map);
}
}
} else if (XMP_IS_PROP_ARRAY (opt)) {
/* FIXME: array with merge mode */
GstTagMergeMode new_mode = mode;
#if 0
//const gchar *tag = ;
if (mode == GST_TAG_MERGE_REPLACE) {
//gst_tag_list_remove_tag(taglist, );
}
#endif
if (XMP_IS_ARRAY_ALTTEXT (opt)) {
metadataparse_xmp_iter_array (xmp, schema, path);
xmp_iterator_skip (iter, XMP_ITER_SKIPSUBTREE);
metadataparse_xmp_iter_array (taglist, new_mode, xmp, schema, path,
schema_map);
xmp_iterator_skip (xmp_iter, XMP_ITER_SKIPSUBTREE);
} else {
metadataparse_xmp_iter_array (xmp, schema, path);
xmp_iterator_skip (iter, XMP_ITER_SKIPSUBTREE);
metadataparse_xmp_iter_array (taglist, new_mode, xmp, schema, path,
schema_map);
xmp_iterator_skip (xmp_iter, XMP_ITER_SKIPSUBTREE);
}
}
}
if (xstr_prop) {
done:
if (xmp_iter)
xmp_iterator_free (xmp_iter);
if (xstr_prop)
xmp_string_free (xstr_prop);
}
if (xstr_path) {
if (xstr_path)
xmp_string_free (xstr_path);
}
if (xstr_schema) {
if (xstr_schema)
xmp_string_free (xstr_schema);
}
void
metadataparse_xmp_iter_node_schema (GstTagList * taglist, GstTagMergeMode mode,
XmpPtr xmp, const char *schema, const char *path)
{
SchemaMap *schema_map = NULL;
if (0 == strcmp (schema, "http://purl.org/dc/elements/1.1/")) {
schema_map = (SchemaMap *) & schema_map_dublin;
}
metadataparse_xmp_iter_array (taglist, mode, xmp, schema, path, schema_map);
}
void
metadataparse_xmp_iter (GstTagList * taglist, GstTagMergeMode mode, XmpPtr xmp)
{
XmpStringPtr xstr_schema = xmp_string_new ();
XmpStringPtr xstr_path = xmp_string_new ();
XmpStringPtr xstr_prop = xmp_string_new ();
uint32_t opt = 0;
XmpIteratorPtr xmp_iter = NULL;
xmp_iter = xmp_iterator_new (xmp, NULL, NULL, XMP_ITER_JUSTCHILDREN);
if (NULL == xmp_iter)
goto done;
while (xmp_iterator_next (xmp_iter, xstr_schema, xstr_path, xstr_prop, &opt)) {
const char *schema = xmp_string_cstr (xstr_schema);
const char *path = xmp_string_cstr (xstr_path);
if (XMP_IS_NODE_SCHEMA (opt)) {
GST_LOG ("%s", schema);
metadataparse_xmp_iter_node_schema (taglist, mode, xmp, schema, path);
} else {
GST_LOG ("Unexpected iteraction");
}
}
done:
if (xmp_iter)
xmp_iterator_free (xmp_iter);
if (xstr_prop)
xmp_string_free (xstr_prop);
if (xstr_path)
xmp_string_free (xstr_path);
if (xstr_schema)
xmp_string_free (xstr_schema);
}
static void
metadataxmp_for_each_tag_in_list (const GstTagList * list, const gchar * tag,
gpointer user_data)
{
XmpPtr xmp = (XmpPtr) user_data;
int i;
for (i = 0; schemas_map[i]; i++) {
const SchemaMap *smap = schemas_map[i];
const SchemaTagMap *stagmap =
metadataparse_get_tagsmap_from_gsttag (smap, tag);
if (stagmap) {
gchar *value = NULL;
GType type = gst_tag_get_type (tag);
switch (type) {
case G_TYPE_STRING:
gst_tag_list_get_string (list, tag, &value);
break;
default:
break;
}
if (value) {
xmp_set_property (xmp, smap->schema, stagmap->xmp_tag, value);
g_free (value);
}
}
}
}
void
@ -253,6 +507,8 @@ metadatamux_xmp_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
{
GstBuffer *xmp_chunk = NULL;
const GValue *val = NULL;
XmpPtr xmp = NULL;
XmpStringPtr xmp_str_buf = xmp_string_new ();
if (!(buf && size))
goto done;
@ -265,15 +521,35 @@ metadatamux_xmp_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
val = gst_tag_list_get_value_index (taglist, GST_TAG_XMP, 0);
if (val) {
xmp_chunk = gst_value_get_buffer (val);
if (xmp_chunk) {
*size = GST_BUFFER_SIZE (xmp_chunk);
*buf = g_new (guint8, *size);
memcpy (*buf, GST_BUFFER_DATA (xmp_chunk), *size);
}
if (xmp_chunk)
xmp = xmp_new (GST_BUFFER_DATA (xmp_chunk), GST_BUFFER_SIZE (xmp_chunk));
}
if (NULL == xmp)
xmp = xmp_new_empty ();
gst_tag_list_foreach (taglist, metadataxmp_for_each_tag_in_list, xmp);
if (!xmp_serialize (xmp, xmp_str_buf, 0, 2)) {
GST_ERROR ("failed to serialize xmp into chunk\n");
} else if (xmp_str_buf) {
unsigned int len = strlen (xmp_string_cstr (xmp_str_buf));
*size = len + 1;
*buf = malloc (*size);
memcpy (*buf, xmp_string_cstr (xmp_str_buf), *size);
} else {
GST_ERROR ("failed to serialize xmp into chunk\n");
}
done:
if (xmp_str_buf)
xmp_string_free (xmp_str_buf);
if (xmp)
xmp_free (xmp);
return;
}