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kate: pass on timed event metadata as tags when we can

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Metadata attached to other objects that may be used in this
event are not passed, as is binary metadata.
This commit is contained in:
Vincent Penquerc'h 2011-08-21 20:36:07 +01:00 committed by Sebastian Dröge
parent 8d5f2c7078
commit d1a6ca2203
1 changed files with 46 additions and 0 deletions
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46
ext/kate/gstkateutil.c
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@ -226,6 +226,18 @@ gst_kate_util_decoder_base_get_property (GstKateDecoderBase * decoder,
return res;
}
static gboolean
gst_kate_util_is_utf8_string (const char *value, size_t len)
{
if (len == 0)
return FALSE;
if (memchr (value, 0, len - 1))
return FALSE;
if (value[len - 1])
return FALSE;
return (kate_text_validate (kate_utf8, value, len) >= 0);
}
GstFlowReturn
gst_kate_util_decoder_base_chain_kate_packet (GstKateDecoderBase * decoder,
GstElement * element, GstPad * pad, GstBuffer * buf, GstPad * srcpad,
@ -371,6 +383,40 @@ gst_kate_util_decoder_base_chain_kate_packet (GstKateDecoderBase * decoder,
break;
}
}
#if ((KATE_VERSION_MAJOR<<16)|(KATE_VERSION_MINOR<<8)|KATE_VERSION_PATCH) >= 0x000400
else if (*ev && (*ev)->meta) {
int count = kate_meta_query_count ((*ev)->meta);
if (count > 0) {
GstTagList *evtags = gst_tag_list_new ();
int idx;
GST_DEBUG_OBJECT (decoder, "Kate event has %d attached metadata", count);
for (idx = 0; idx < count; ++idx) {
const char *tag, *value;
size_t len;
if (kate_meta_query ((*ev)->meta, idx, &tag, &value, &len) < 0) {
GST_WARNING_OBJECT (decoder, "Failed to retrieve metadata %d", idx);
} else {
if (gst_kate_util_is_utf8_string (value, len)) {
gchar *compound = g_strdup_printf ("%s=%s", tag, value);
GST_DEBUG_OBJECT (decoder, "Metadata %d: %s=%s (%zu bytes)", idx,
tag, value, len);
gst_tag_list_add (evtags, GST_TAG_MERGE_APPEND,
GST_TAG_EXTENDED_COMMENT, compound, NULL);
g_free (compound);
} else {
GST_INFO_OBJECT (decoder,
"Metadata %d, (%s, %zu bytes) is binary, ignored", idx, tag,
len);
}
}
}
if (gst_tag_list_is_empty (evtags))
gst_tag_list_free (evtags);
else
gst_element_found_tags_for_pad (element, tagpad, evtags);
}
}
#endif
return rflow;
}