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hlsdemux: simplify next segment checking functions

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Optimize loop by moving condition outside of it and reuse the
find_next_fragment function to check if there is next instead of
replicating the same loop
This commit is contained in:
Thiago Santos 2015-01-08 15:46:49 -03:00
parent e21abb62e0
commit 308b2e5aaf
1 changed files with 28 additions and 30 deletions
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58
ext/hls/m3u8.c
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@ -951,50 +951,48 @@ _find_current (GstM3U8MediaFile * file, GstM3U8Client * client)
return file->sequence != client->sequence; return file->sequence != client->sequence;
} }
static gboolean
has_next_fragment (GstM3U8Client * client, GList * l, gboolean forward)
{
GstM3U8MediaFile *file;
if (!forward)
l = g_list_last (l);
while (l) {
file = l->data;
if (forward && file->sequence > client->sequence)
break;
else if (!forward && file->sequence < client->sequence)
break;
l = (forward ? l->next : l->prev);
}
return l != NULL;
}
static GList * static GList *
find_next_fragment (GstM3U8Client * client, GList * l, gboolean forward) find_next_fragment (GstM3U8Client * client, GList * l, gboolean forward)
{ {
GstM3U8MediaFile *file; GstM3U8MediaFile *file;
if (!forward) if (forward) {
while (l) {
file = l->data;
if (file->sequence >= client->sequence)
break;
l = l->next;
}
} else {
l = g_list_last (l); l = g_list_last (l);
while (l) { while (l) {
file = l->data; file = l->data;
if (forward && file->sequence >= client->sequence) if (file->sequence <= client->sequence)
break; break;
else if (!forward && file->sequence <= client->sequence)
break;
l = (forward ? l->next : l->prev); l = l->prev;
}
} }
return l; return l;
} }
static gboolean
has_next_fragment (GstM3U8Client * client, GList * l, gboolean forward)
{
l = find_next_fragment (client, l, forward);
if (l) {
return (forward && l->next) || (!forward && l->prev);
}
return FALSE;
}
gboolean gboolean
gst_m3u8_client_get_next_fragment (GstM3U8Client * client, gst_m3u8_client_get_next_fragment (GstM3U8Client * client,
gboolean * discontinuity, gchar ** uri, GstClockTime * duration, gboolean * discontinuity, gchar ** uri, GstClockTime * duration,