/* Removes duplicate codecs that have the same RTP expression */
static GList *
remove_duplicates (GList *list)
{
GList *walk1, *walk2;
for (walk1 = list; walk1; walk1 = g_list_next (walk1))
{
CodecCap *codec_cap1 = walk1->data;
again:
for (walk2 = walk1->next; walk2; walk2 = g_list_next (walk2))
{
CodecCap *codec_cap2 = walk2->data;
if (gst_caps_is_equal (codec_cap1->rtp_caps, codec_cap2->rtp_caps))
{
codec_cap_free (codec_cap2);
walk1 = g_list_delete_link (walk1, walk2);
goto again;
}
}
}
return list;
}
static void
codec_cap_list_free (GList *list)
{
GList *mwalk;
for (mwalk = list; mwalk; mwalk = g_list_next (mwalk))
{
codec_cap_free ((CodecCap *)mwalk->data);
}
g_list_free (list);
}
/* Removes all dynamic pts that already have a static pt in the list */
static GList *
remove_dynamic_duplicates (GList *list)
{
GList *walk1, *walk2;
CodecCap *codec_cap, *cur_codec_cap;
GstStructure *rtp_struct, *cur_rtp_struct;
const gchar *encoding_name, *cur_encoding_name;
GList *remove_us = NULL;
for (walk1 = list; walk1; walk1 = g_list_next (walk1))
{
const GValue *value;
GType type;
codec_cap = (CodecCap *)(walk1->data);
rtp_struct = gst_caps_get_structure (codec_cap->rtp_caps, 0);
encoding_name = gst_structure_get_string (rtp_struct, "encoding-name");
if (!encoding_name)
continue;
/* let's skip all non static payload types */
value = gst_structure_get_value (rtp_struct, "payload");
type = G_VALUE_TYPE (value);
if (type != G_TYPE_INT)
{
continue;
}
else
{
gint payload_type;
payload_type = g_value_get_int (value);
if (payload_type >= 96)
{
continue;
}
}
for (walk2 = list; walk2; walk2 = g_list_next (walk2))
{
cur_codec_cap = (CodecCap *)(walk2->data);
cur_rtp_struct = gst_caps_get_structure (cur_codec_cap->rtp_caps, 0);
cur_encoding_name =
gst_structure_get_string (cur_rtp_struct, "encoding-name");
if (!cur_encoding_name)
continue;
if (g_ascii_strcasecmp (encoding_name, cur_encoding_name) == 0)
{
const GValue *value = gst_structure_get_value (cur_rtp_struct, "payload");
GType type = G_VALUE_TYPE (value);
/* this is a dynamic pt that has a static one , let's remove it */
if (type == GST_TYPE_INT_RANGE)
remove_us = g_list_prepend (remove_us, cur_codec_cap);
}
}
}
for (walk1 = remove_us; walk1; walk1 = g_list_next (walk1))
{
list = g_list_remove_all (list, walk1->data);
codec_cap_free (walk1->data);
}
g_list_free (remove_us);
return list;
}
