mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2025-01-18 05:16:05 +00:00
Code Issues 1 Projects Releases Wiki Activity

ximagesink: implement ALLOCATION query

Browse source
This commit is contained in:
Wim Taymans 2011-05-19 15:56:57 +02:00
parent f66c6ced56
commit f1980aa051
1 changed files with 98 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

98
sys/ximage/ximagesink.c
View file

@ -107,6 +107,8 @@
#include <gst/interfaces/navigation.h>
#include <gst/interfaces/xoverlay.h>
#include <gst/video/gstmetavideo.h>
/* Object header */
#include "ximagesink.h"
@ -1400,6 +1402,98 @@ gst_ximagesink_event (GstBaseSink * sink, GstEvent * event)
return TRUE;
}
static gboolean
gst_ximagesink_sink_query (GstPad * sinkpad, GstQuery * query)
{
GstXImageSink *ximagesink = GST_XIMAGESINK (GST_PAD_PARENT (sinkpad));
gboolean res = TRUE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_ALLOCATION:
{
GstBufferPool *pool;
GstStructure *config;
GstCaps *caps;
guint size;
gboolean need_pool;
gst_query_parse_allocation (query, &caps, &need_pool);
if (caps == NULL)
goto no_caps;
g_mutex_lock (ximagesink->flow_lock);
if ((pool = ximagesink->pool))
gst_object_ref (pool);
g_mutex_unlock (ximagesink->flow_lock);
if (pool != NULL) {
const GstCaps *pcaps;
/* we had a pool, check caps */
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_get (config, &pcaps, &size, NULL, NULL, NULL,
NULL, NULL);
GST_DEBUG_OBJECT (ximagesink,
"we had a pool with caps %" GST_PTR_FORMAT, pcaps);
if (!gst_caps_is_equal (caps, pcaps)) {
/* different caps, we can't use this pool */
GST_DEBUG_OBJECT (ximagesink, "pool has different caps");
gst_object_unref (pool);
pool = NULL;
}
}
if (pool == NULL && need_pool) {
GstVideoFormat format;
gint width, height;
GST_DEBUG_OBJECT (ximagesink, "create new pool");
pool = gst_ximage_buffer_pool_new (ximagesink);
if (!gst_video_format_parse_caps (caps, &format, &width, &height))
goto invalid_caps;
/* the normal size of a frame */
size = gst_video_format_get_size (format, width, height);
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set (config, caps, size, 0, 0, 0, 0, 16);
if (!gst_buffer_pool_set_config (pool, config))
goto config_failed;
}
gst_query_set_allocation_params (query, size, 0, 0, 0, 16, pool);
/* we also support various metadata */
gst_query_add_allocation_meta (query, GST_META_API_VIDEO);
gst_object_unref (pool);
break;
}
default:
res = FALSE;
break;
}
return res;
/* ERRORS */
no_caps:
{
GST_DEBUG_OBJECT (sinkpad, "no caps specified");
return FALSE;
}
invalid_caps:
{
GST_DEBUG_OBJECT (sinkpad, "invalid caps specified");
return FALSE;
}
config_failed:
{
GST_DEBUG_OBJECT (sinkpad, "failed setting config");
return FALSE;
}
}
/* Interfaces stuff */
static gboolean
@ -1781,6 +1875,10 @@ gst_ximagesink_finalize (GObject * object)
static void
gst_ximagesink_init (GstXImageSink * ximagesink)
{
/* for the ALLOCATION query */
gst_pad_set_query_function (GST_BASE_SINK (ximagesink)->sinkpad,
gst_ximagesink_sink_query);
ximagesink->display_name = NULL;
ximagesink->xcontext = NULL;
ximagesink->xwindow = NULL;