static gpointer progress_buffer_range_monitor(ProgressBuffer *element)
{
g_mutex_lock(&element->lock);
check_loop:
while (element->srcresult == GST_FLOW_OK && !pending_eos(element) &&
(pending_range_start(element) || pending_range_stop(element) ||
!VALID_RANGE(element->range_start) && !VALID_RANGE(element->range_stop)))
{
g_cond_wait(&element->add_cond, &element->lock);
}
if (element->srcresult == GST_FLOW_OK && (VALID_RANGE(element->range_start) || VALID_RANGE(element->range_stop)))
{
element->range_stop = element->range_start = NO_RANGE_REQUEST;
g_mutex_unlock(&element->lock);
gst_pad_push_event(element->srcpad, gst_event_new_custom(FX_EVENT_RANGE_READY, NULL));
g_mutex_lock(&element->lock);
goto check_loop;
}
else
g_mutex_unlock(&element->lock);
return NULL;
}
static pic_value
pic_blob_bytevector_copy(pic_state *pic)
{
unsigned char *buf;
int n, start, end, len;
n = pic_get_args(pic, "b|ii", &buf, &len, &start, &end);
switch (n) {
case 1:
start = 0;
case 2:
end = len;
}
VALID_RANGE(pic, len, start, end);
return pic_blob_value(pic, buf + start, end - start);
}
static inline gboolean pending_range_stop(ProgressBuffer *element)
{
return (VALID_RANGE(element->range_stop) &&
element->sink_segment.position < element->range_stop);
}
static inline gboolean pending_range_start(ProgressBuffer *element)
{
return (VALID_RANGE(element->range_start) &&
element->sink_segment.start > element->range_start);
}