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xvimagesink: implement ALLOCATION query

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This commit is contained in:
Wim Taymans 2011-04-29 12:09:38 +02:00
parent e7f56a7817
commit c952567bb6
1 changed files with 73 additions and 0 deletions
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73
sys/xvimage/xvimagesink.c
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@ -120,6 +120,7 @@
#include <gst/interfaces/propertyprobe.h>
/* Helper functions */
#include <gst/video/video.h>
#include <gst/video/gstmetavideo.h>
/* Object header */
#include "xvimagesink.h"
@ -1950,6 +1951,74 @@ gst_xvimagesink_event (GstBaseSink * sink, GstEvent * event)
return TRUE;
}
static gboolean
gst_xvimagesink_sink_query (GstPad * sinkpad, GstQuery * query)
{
GstXvImageSink *xvimagesink = GST_XVIMAGESINK (GST_PAD_PARENT (sinkpad));
gboolean res = TRUE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_ALLOCATION:
{
GstCaps *caps;
gboolean need_pool;
GstBufferPool *pool = NULL;
guint size;
GstVideoFormat format;
gint width, height;
gst_query_parse_allocation (query, &caps, &need_pool);
if (caps == NULL)
goto no_caps;
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);
if (need_pool) {
GstStructure *config;
/* create a new pool for the new configuration */
pool = gst_xvimage_buffer_pool_new (xvimagesink);
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, 0, 0, size, pool);
/* we also support various metadata */
gst_query_add_allocation_meta (query, GST_META_API_VIDEO);
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;
}
}
/* Buffer management */
static GstCaps *
gst_xvimage_sink_different_size_suggestion (GstXvImageSink * xvimagesink,
@ -2940,6 +3009,10 @@ gst_xvimagesink_finalize (GObject * object)
static void
gst_xvimagesink_init (GstXvImageSink * xvimagesink)
{
/* for the ALLOCATION query */
gst_pad_set_query_function (GST_BASE_SINK (xvimagesink)->sinkpad,
gst_xvimagesink_sink_query);
xvimagesink->display_name = NULL;
xvimagesink->adaptor_no = 0;
xvimagesink->xcontext = NULL;