EXPORT_C
#endif
GstTagList *
gst_tag_list_merge (const GstTagList * list1, const GstTagList * list2,
GstTagMergeMode mode)
{
g_return_val_if_fail (list1 == NULL || GST_IS_TAG_LIST (list1), NULL);
g_return_val_if_fail (list2 == NULL || GST_IS_TAG_LIST (list2), NULL);
g_return_val_if_fail (GST_TAG_MODE_IS_VALID (mode), NULL);
if (!list1 && !list2) {
return NULL;
} else if (!list1) {
return gst_tag_list_copy (list2);
} else if (!list2) {
return gst_tag_list_copy (list1);
} else {
GstTagList *ret;
ret = gst_tag_list_copy (list1);
gst_tag_list_insert (ret, list2, mode);
return ret;
}
}
/**
* gst_toc_entry_copy:
* @entry: #GstTocEntry to copy.
*
* Copy #GstTocEntry with all subentries (deep copy).
*
* Returns: newly allocated #GstTocEntry in case of success, NULL otherwise;
* free it when done with gst_toc_entry_unref().
*/
static GstTocEntry *
gst_toc_entry_copy (const GstTocEntry * entry)
{
GstTocEntry *ret, *sub;
GstTagList *list;
GList *cur;
g_return_val_if_fail (entry != NULL, NULL);
ret = gst_toc_entry_new (entry->type, entry->uid);
ret->start = entry->start;
ret->stop = entry->stop;
if (GST_IS_TAG_LIST (entry->tags)) {
list = gst_tag_list_copy (entry->tags);
if (ret->tags)
gst_tag_list_unref (ret->tags);
ret->tags = list;
}
cur = entry->subentries;
while (cur != NULL) {
sub = gst_toc_entry_copy (cur->data);
if (sub != NULL)
ret->subentries = g_list_prepend (ret->subentries, sub);
cur = cur->next;
}
ret->subentries = g_list_reverse (ret->subentries);
return ret;
}
/**
* gst_toc_copy:
* @toc: #GstToc to copy.
*
* Copy #GstToc with all subentries (deep copy).
*
* Returns: newly allocated #GstToc in case of success, NULL otherwise;
* free it when done with gst_toc_unref().
*/
static GstToc *
gst_toc_copy (const GstToc * toc)
{
GstToc *ret;
GstTocEntry *entry;
GList *cur;
GstTagList *list;
g_return_val_if_fail (toc != NULL, NULL);
ret = gst_toc_new (toc->scope);
if (GST_IS_TAG_LIST (toc->tags)) {
list = gst_tag_list_copy (toc->tags);
gst_tag_list_unref (ret->tags);
ret->tags = list;
}
cur = toc->entries;
while (cur != NULL) {
entry = gst_toc_entry_copy (cur->data);
if (entry != NULL)
ret->entries = g_list_prepend (ret->entries, entry);
cur = cur->next;
}
ret->entries = g_list_reverse (ret->entries);
return ret;
}
EXPORT_C
#endif
gboolean
gst_tag_list_copy_value (GValue * dest, const GstTagList * list,
const gchar * tag)
{
const GValue *src;
g_return_val_if_fail (GST_IS_TAG_LIST (list), FALSE);
g_return_val_if_fail (tag != NULL, FALSE);
g_return_val_if_fail (dest != NULL, FALSE);
g_return_val_if_fail (G_VALUE_TYPE (dest) == 0, FALSE);
src = gst_structure_get_value ((GstStructure *) list, tag);
if (!src)
return FALSE;
if (G_VALUE_TYPE (src) == GST_TYPE_LIST) {
GstTagInfo *info = gst_tag_lookup (g_quark_from_string (tag));
/* must be there or lists aren't allowed */
g_assert (info->merge_func);
info->merge_func (dest, src);
} else {
g_value_init (dest, G_VALUE_TYPE (src));
g_value_copy (src, dest);
}
return TRUE;
}
EXPORT_C
#endif
G_CONST_RETURN GValue *
gst_tag_list_get_value_index (const GstTagList * list, const gchar * tag,
guint index)
{
const GValue *value;
g_return_val_if_fail (GST_IS_TAG_LIST (list), NULL);
g_return_val_if_fail (tag != NULL, NULL);
value = gst_structure_get_value ((GstStructure *) list, tag);
if (value == NULL)
return NULL;
if (GST_VALUE_HOLDS_LIST (value)) {
if (index >= gst_value_list_get_size (value))
return NULL;
return gst_value_list_get_value (value, index);
} else {
if (index > 0)
return NULL;
return value;
}
}
/**
* gst_pb_utils_add_codec_description_to_tag_list:
* @taglist: a #GstTagList
* @codec_tag: a GStreamer codec tag such as #GST_TAG_AUDIO_CODEC,
* #GST_TAG_VIDEO_CODEC or #GST_TAG_CODEC
* @caps: the (fixed) #GstCaps for which a codec tag should be added.
*
* Adds a codec tag describing the format specified by @caps to @taglist.
*
* Returns: TRUE if a codec tag was added, FALSE otherwise.
*/
gboolean
gst_pb_utils_add_codec_description_to_tag_list (GstTagList * taglist,
const gchar * codec_tag, const GstCaps * caps)
{
const FormatInfo *info;
gchar *desc;
g_return_val_if_fail (taglist != NULL, FALSE);
g_return_val_if_fail (GST_IS_TAG_LIST (taglist), FALSE);
g_return_val_if_fail (codec_tag != NULL, FALSE);
g_return_val_if_fail (gst_tag_exists (codec_tag), FALSE);
g_return_val_if_fail (gst_tag_get_type (codec_tag) == G_TYPE_STRING, FALSE);
g_return_val_if_fail (caps != NULL, FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
info = find_format_info (caps);
if (info == NULL)
return FALSE;
desc = format_info_get_desc (info, caps);
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, codec_tag, desc, NULL);
g_free (desc);
return TRUE;
}
EXPORT_C
#endif
void
gst_tag_list_free (GstTagList * list)
{
g_return_if_fail (GST_IS_TAG_LIST (list));
gst_structure_free ((GstStructure *) list);
}
EXPORT_C
#endif
GstTagList *
gst_tag_list_copy (const GstTagList * list)
{
g_return_val_if_fail (GST_IS_TAG_LIST (list), NULL);
return GST_TAG_LIST (gst_structure_copy ((GstStructure *) list));
}
EXPORT_C
#endif
gboolean
gst_tag_list_is_empty (const GstTagList * list)
{
g_return_val_if_fail (list != NULL, FALSE);
g_return_val_if_fail (GST_IS_TAG_LIST (list), FALSE);
return (gst_structure_n_fields ((GstStructure *) list) == 0);
}
/**
* gst_tag_list_to_xmp_buffer:
* @list: tags
* @read_only: does the container forbid inplace editing
*
* Formats a taglist as a xmp packet.
*
* Returns: new buffer or %NULL, unref the buffer when done
*
* Since: 0.10.29
*/
GstBuffer *
gst_tag_list_to_xmp_buffer (const GstTagList * list, gboolean read_only)
{
GstBuffer *buffer = NULL;
GString *data = g_string_sized_new (4096);
guint i;
xmp_tags_initialize ();
g_return_val_if_fail (GST_IS_TAG_LIST (list), NULL);
/* xmp header */
g_string_append (data,
"<?xpacket begin=\"\xEF\xBB\xBF\" id=\"W5M0MpCehiHzreSzNTczkc9d\"?>\n");
g_string_append (data,
"<x:xmpmeta xmlns:x=\"adobe:ns:meta/\" x:xmptk=\"GStreamer\">\n");
g_string_append (data,
"<rdf:RDF xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\"");
i = 0;
while (ns_match[i].ns_prefix) {
g_string_append_printf (data, " xmlns:%s=\"%s\"", ns_match[i].ns_prefix,
ns_match[i].ns_uri);
i++;
}
g_string_append (data, ">\n");
g_string_append (data, "<rdf:Description rdf:about=\"\">\n");
/* iterate the taglist */
gst_tag_list_foreach (list, write_one_tag, data);
/* xmp footer */
g_string_append (data, "</rdf:Description>\n");
g_string_append (data, "</rdf:RDF>\n");
g_string_append (data, "</x:xmpmeta>\n");
if (!read_only) {
/* the xmp spec recommand to add 2-4KB padding for in-place editable xmp */
guint i;
for (i = 0; i < 32; i++) {
g_string_append (data, " " " "
" " " " "\n");
}
}
g_string_append_printf (data, "<?xpacket end=\"%c\"?>\n",
(read_only ? 'r' : 'w'));
buffer = gst_buffer_new ();
GST_BUFFER_SIZE (buffer) = data->len + 1;
GST_BUFFER_DATA (buffer) = (guint8 *) g_string_free (data, FALSE);
GST_BUFFER_MALLOCDATA (buffer) = GST_BUFFER_DATA (buffer);
return buffer;
}
EXPORT_C
#endif
void
gst_tag_list_remove_tag (GstTagList * list, const gchar * tag)
{
g_return_if_fail (GST_IS_TAG_LIST (list));
g_return_if_fail (tag != NULL);
gst_structure_remove_field ((GstStructure *) list, tag);
}
EXPORT_C
#endif
void
gst_tag_list_insert (GstTagList * into, const GstTagList * from,
GstTagMergeMode mode)
{
GstTagCopyData data;
g_return_if_fail (GST_IS_TAG_LIST (into));
g_return_if_fail (GST_IS_TAG_LIST (from));
g_return_if_fail (GST_TAG_MODE_IS_VALID (mode));
data.list = (GstStructure *) into;
data.mode = mode;
if (mode == GST_TAG_MERGE_REPLACE_ALL) {
gst_structure_remove_all_fields (data.list);
}
gst_structure_foreach ((GstStructure *) from, gst_tag_list_copy_foreach,
&data);
}
EXPORT_C
#endif
void
gst_tag_list_add_values (GstTagList * list, GstTagMergeMode mode,
const gchar * tag, ...)
{
va_list args;
g_return_if_fail (GST_IS_TAG_LIST (list));
g_return_if_fail (GST_TAG_MODE_IS_VALID (mode));
g_return_if_fail (tag != NULL);
va_start (args, tag);
gst_tag_list_add_valist_values (list, mode, tag, args);
va_end (args);
}
static gboolean
bbd_pipeline_bus_callback (GstBus *bus, GstMessage *message, gpointer data)
{
BansheeBpmDetector *detector = (BansheeBpmDetector *)data;
g_return_val_if_fail (detector != NULL, FALSE);
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_TAG: {
GstTagList *tags;
gst_message_parse_tag (message, &tags);
if (GST_IS_TAG_LIST (tags)) {
gst_tag_list_foreach (tags, (GstTagForeachFunc)bbd_pipeline_process_tag, detector);
gst_tag_list_free (tags);
}
break;
}
case GST_MESSAGE_ERROR: {
GError *error;
gchar *debug;
gst_message_parse_error (message, &error, &debug);
bbd_raise_error (detector, error->message, debug);
g_error_free (error);
g_free (debug);
detector->is_detecting = FALSE;
break;
}
case GST_MESSAGE_EOS: {
detector->is_detecting = FALSE;
gst_element_set_state (GST_ELEMENT (detector->pipeline), GST_STATE_NULL);
if (detector->finished_cb != NULL) {
detector->finished_cb ();
}
break;
}
default: break;
}
return TRUE;
}
/**
* gst_tag_setter_merge_tags:
* @setter: a #GstTagSetter
* @list: a tag list to merge from
* @mode: the mode to merge with
*
* Merges the given list into the setter's list using the given mode.
*/
void
gst_tag_setter_merge_tags (GstTagSetter * setter, const GstTagList * list,
GstTagMergeMode mode)
{
GstTagData *data;
g_return_if_fail (GST_IS_TAG_SETTER (setter));
g_return_if_fail (GST_TAG_MODE_IS_VALID (mode));
g_return_if_fail (GST_IS_TAG_LIST (list));
data = gst_tag_setter_get_data (setter);
if (data->list == NULL) {
if (mode != GST_TAG_MERGE_KEEP_ALL)
data->list = gst_tag_list_copy (list);
} else {
gst_tag_list_insert (data->list, list, mode);
}
}
EXPORT_C
#endif
void
gst_tag_list_foreach (const GstTagList * list, GstTagForeachFunc func,
gpointer user_data)
{
TagForeachData data;
g_return_if_fail (GST_IS_TAG_LIST (list));
g_return_if_fail (func != NULL);
data.func = func;
data.tag_list = list;
data.data = user_data;
gst_structure_foreach ((GstStructure *) list, structure_foreach_wrapper,
&data);
}
EXPORT_C
#endif
guint
gst_tag_list_get_tag_size (const GstTagList * list, const gchar * tag)
{
const GValue *value;
g_return_val_if_fail (GST_IS_TAG_LIST (list), 0);
value = gst_structure_get_value ((GstStructure *) list, tag);
if (value == NULL)
return 0;
if (G_VALUE_TYPE (value) != GST_TYPE_LIST)
return 1;
return gst_value_list_get_size (value);
}
EXPORT_C
#endif
gboolean
gst_tag_list_get_date_index (const GstTagList * list,
const gchar * tag, guint index, GDate ** value)
{
const GValue *v;
g_return_val_if_fail (GST_IS_TAG_LIST (list), FALSE);
g_return_val_if_fail (tag != NULL, FALSE);
g_return_val_if_fail (value != NULL, FALSE);
if ((v = gst_tag_list_get_value_index (list, tag, index)) == NULL)
return FALSE;
*value = (GDate *) g_value_dup_boxed (v);
return (*value != NULL);
}
EXPORT_C
#endif
gboolean
gst_tag_list_get_date (const GstTagList * list, const gchar * tag,
GDate ** value)
{
GValue v = { 0, };
g_return_val_if_fail (GST_IS_TAG_LIST (list), FALSE);
g_return_val_if_fail (tag != NULL, FALSE);
g_return_val_if_fail (value != NULL, FALSE);
if (!gst_tag_list_copy_value (&v, list, tag))
return FALSE;
*value = (GDate *) g_value_dup_boxed (&v);
g_value_unset (&v);
return (*value != NULL);
}
/**
* gst_aggregator_merge_tags:
* @self: a #GstAggregator
* @tags: a #GstTagList to merge
* @mode: the #GstTagMergeMode to use
*
* Adds tags to so-called pending tags, which will be processed
* before pushing out data downstream.
*
* Note that this is provided for convenience, and the subclass is
* not required to use this and can still do tag handling on its own.
*
* MT safe.
*/
void
gst_aggregator_merge_tags (GstAggregator * self,
const GstTagList * tags, GstTagMergeMode mode)
{
GstTagList *otags;
g_return_if_fail (GST_IS_AGGREGATOR (self));
g_return_if_fail (tags == NULL || GST_IS_TAG_LIST (tags));
/* FIXME Check if we can use OBJECT lock here! */
GST_OBJECT_LOCK (self);
if (tags)
GST_DEBUG_OBJECT (self, "merging tags %" GST_PTR_FORMAT, tags);
otags = self->priv->tags;
self->priv->tags = gst_tag_list_merge (self->priv->tags, tags, mode);
if (otags)
gst_tag_list_unref (otags);
self->priv->tags_changed = TRUE;
GST_OBJECT_UNLOCK (self);
}
EXPORT_C
#endif
gboolean
gst_tag_list_add_id3_image (GstTagList * tag_list, const guint8 * image_data,
guint image_data_len, guint id3_picture_type)
{
GstTagImageType tag_image_type;
const gchar *tag_name;
GstBuffer *image;
g_return_val_if_fail (GST_IS_TAG_LIST (tag_list), FALSE);
g_return_val_if_fail (image_data != NULL, FALSE);
g_return_val_if_fail (image_data_len > 0, FALSE);
if (id3_picture_type == 0x01 || id3_picture_type == 0x02) {
/* file icon for preview. Don't add image-type to caps, since there
* is only supposed to be one of these, and the type is already indicated
* via the special tag */
tag_name = GST_TAG_PREVIEW_IMAGE;
tag_image_type = GST_TAG_IMAGE_TYPE_NONE;
} else {
tag_name = GST_TAG_IMAGE;
/* Remap the ID3v2 APIC type our ImageType enum */
if (id3_picture_type >= 0x3 && id3_picture_type <= 0x14)
tag_image_type = (GstTagImageType) (id3_picture_type - 2);
else
tag_image_type = GST_TAG_IMAGE_TYPE_UNDEFINED;
}
image = gst_tag_image_data_to_image_buffer (image_data, image_data_len,
tag_image_type);
if (image == NULL)
return FALSE;
gst_tag_list_add (tag_list, GST_TAG_MERGE_APPEND, tag_name, image, NULL);
gst_buffer_unref (image);
return TRUE;
}
/**
* gst_pb_utils_add_codec_description_to_tag_list:
* @taglist: a #GstTagList
* @codec_tag: (allow-none): a GStreamer codec tag such as #GST_TAG_AUDIO_CODEC,
* #GST_TAG_VIDEO_CODEC or #GST_TAG_CODEC. If none is specified,
* the function will attempt to detect the appropriate category.
* @caps: the (fixed) #GstCaps for which a codec tag should be added.
*
* Adds a codec tag describing the format specified by @caps to @taglist.
*
* Returns: TRUE if a codec tag was added, FALSE otherwise.
*/
gboolean
gst_pb_utils_add_codec_description_to_tag_list (GstTagList * taglist,
const gchar * codec_tag, const GstCaps * caps)
{
const FormatInfo *info;
gchar *desc;
g_return_val_if_fail (taglist != NULL, FALSE);
g_return_val_if_fail (GST_IS_TAG_LIST (taglist), FALSE);
g_return_val_if_fail (codec_tag == NULL || (gst_tag_exists (codec_tag)
&& gst_tag_get_type (codec_tag) == G_TYPE_STRING), FALSE);
g_return_val_if_fail (caps != NULL, FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
info = find_format_info (caps);
if (info == NULL)
return FALSE;
/* Attempt to find tag classification */
if (codec_tag == NULL) {
if (info->flags & FLAG_CONTAINER)
codec_tag = GST_TAG_CONTAINER_FORMAT;
else if (info->flags & FLAG_AUDIO)
codec_tag = GST_TAG_AUDIO_CODEC;
else if (info->flags & FLAG_VIDEO)
codec_tag = GST_TAG_VIDEO_CODEC;
else if (info->flags & FLAG_SUB)
codec_tag = GST_TAG_SUBTITLE_CODEC;
else
codec_tag = GST_TAG_CODEC;
}
desc = format_info_get_desc (info, caps);
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, codec_tag, desc, NULL);
g_free (desc);
return TRUE;
}
EXPORT_C
#endif
void
gst_tag_list_add_valist (GstTagList * list, GstTagMergeMode mode,
const gchar * tag, va_list var_args)
{
GstTagInfo *info;
GQuark quark;
gchar *error = NULL;
g_return_if_fail (GST_IS_TAG_LIST (list));
g_return_if_fail (GST_TAG_MODE_IS_VALID (mode));
g_return_if_fail (tag != NULL);
while (tag != NULL) {
GValue value = { 0, };
quark = g_quark_from_string (tag);
info = gst_tag_lookup (quark);
if (info == NULL)
g_warning ("no GstTag for %s", tag);
g_return_if_fail (info != NULL);
g_value_init (&value, info->type);
G_VALUE_COLLECT (&value, var_args, 0, &error);
if (error) {
g_warning ("%s: %s", G_STRLOC, error);
g_free (error);
/* we purposely leak the value here, it might not be
* in a sane state if an error condition occoured
*/
return;
}
gst_tag_list_add_value_internal (list, mode, quark, &value);
g_value_unset (&value);
tag = va_arg (var_args, gchar *);
}
}
EXPORT_C
#endif
void
gst_tag_list_add_valist_values (GstTagList * list, GstTagMergeMode mode,
const gchar * tag, va_list var_args)
{
GstTagInfo *info;
GQuark quark;
g_return_if_fail (GST_IS_TAG_LIST (list));
g_return_if_fail (GST_TAG_MODE_IS_VALID (mode));
g_return_if_fail (tag != NULL);
while (tag != NULL) {
quark = g_quark_from_string (tag);
info = gst_tag_lookup (quark);
g_return_if_fail (info != NULL);
gst_tag_list_add_value_internal (list, mode, quark, va_arg (var_args,
GValue *));
tag = va_arg (var_args, gchar *);
}
}
