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visual: fix upstream renegotiation

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Fix a refcount problem.
Handle reconfiguration requests.
This commit is contained in:
Wim Taymans 2011-05-19 13:38:55 +02:00
parent b2e80a09ca
commit 0b3272108c
1 changed files with 23 additions and 21 deletions
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44
ext/libvisual/visual.c
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@ -432,7 +432,6 @@ gst_vis_src_negotiate (GstVisual * visual)
DEFAULT_FPS_N, DEFAULT_FPS_D);
gst_visual_src_setcaps (visual, target);
gst_caps_unref (target);
/* try to get a bufferpool now */
/* find a pool for the negotiated caps now */
@ -456,7 +455,7 @@ gst_vis_src_negotiate (GstVisual * visual)
pool = gst_buffer_pool_new ();
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set (config, caps, size, min, max, prefix, 0,
gst_buffer_pool_config_set (config, target, size, min, max, prefix, 0,
alignment);
gst_buffer_pool_set_config (pool, config);
}
@ -468,6 +467,8 @@ gst_vis_src_negotiate (GstVisual * visual)
/* and activate */
gst_buffer_pool_set_active (pool, TRUE);
gst_caps_unref (target);
return TRUE;
/* ERRORS */
@ -557,6 +558,11 @@ gst_visual_src_event (GstPad * pad, GstEvent * event)
res = gst_pad_push_event (visual->sinkpad, event);
break;
}
case GST_EVENT_RECONFIGURE:
/* dont't forward */
gst_event_unref (event);
res = TRUE;
break;
default:
res = gst_pad_event_default (pad, event);
break;
@ -627,22 +633,20 @@ gst_visual_src_query (GstPad * pad, GstQuery * query)
* function will negotiate one. After calling this function, a
* reverse negotiation could have happened. */
static GstFlowReturn
get_buffer (GstVisual * visual, GstBuffer ** outbuf)
ensure_negotiated (GstVisual * visual)
{
GstFlowReturn ret;
gboolean reconfigure;
GST_OBJECT_LOCK (visual->srcpad);
reconfigure = GST_PAD_NEEDS_RECONFIGURE (visual->srcpad);
GST_OBJECT_FLAG_UNSET (visual->srcpad, GST_PAD_NEED_RECONFIGURE);
GST_OBJECT_UNLOCK (visual->srcpad);
/* we don't know an output format yet, pick one */
if (!gst_pad_has_current_caps (visual->srcpad)) {
if (reconfigure || !gst_pad_has_current_caps (visual->srcpad)) {
if (!gst_vis_src_negotiate (visual))
return GST_FLOW_NOT_NEGOTIATED;
}
GST_DEBUG_OBJECT (visual, "allocating output buffer");
ret = gst_buffer_pool_acquire_buffer (visual->pool, outbuf, NULL);
if (ret != GST_FLOW_OK)
return ret;
return GST_FLOW_OK;
}
@ -657,14 +661,11 @@ gst_visual_chain (GstPad * pad, GstBuffer * buffer)
GST_DEBUG_OBJECT (visual, "chain function called");
/* If we don't have an output format yet, preallocate a buffer to try and
* set one */
if (!gst_pad_has_current_caps (visual->srcpad)) {
ret = get_buffer (visual, &outbuf);
if (ret != GST_FLOW_OK) {
gst_buffer_unref (buffer);
goto beach;
}
/* Make sure have an output format */
ret = ensure_negotiated (visual);
if (ret != GST_FLOW_OK) {
gst_buffer_unref (buffer);
goto beach;
}
/* resync on DISCONT */
@ -815,7 +816,8 @@ gst_visual_chain (GstPad * pad, GstBuffer * buffer)
/* alloc a buffer if we don't have one yet, this happens
* when we pushed a buffer in this while loop before */
if (outbuf == NULL) {
ret = get_buffer (visual, &outbuf);
GST_DEBUG_OBJECT (visual, "allocating output buffer");
ret = gst_buffer_pool_acquire_buffer (visual->pool, &outbuf, NULL);
if (ret != GST_FLOW_OK) {
gst_adapter_unmap (visual->adapter, 0);
goto beach;