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videodecoder: Add sink_query() src_query() virtual

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=720103
This commit is contained in:
Nicolas Dufresne 2013-11-27 16:39:52 -05:00
parent da6d3cfacf
commit 09a6ca97d2
2 changed files with 71 additions and 11 deletions
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63
gst-libs/gst/video/gstvideodecoder.c
View file

@ -461,6 +461,10 @@ static GstFlowReturn gst_video_decoder_parse_available (GstVideoDecoder * dec,
gboolean at_eos, gboolean new_buffer);
static gboolean gst_video_decoder_negotiate_unlocked (GstVideoDecoder *
decoder);
static gboolean gst_video_decoder_sink_query_default (GstVideoDecoder * decoder,
GstQuery * query);
static gboolean gst_video_decoder_src_query_default (GstVideoDecoder * decoder,
GstQuery * query);
/* we can't use G_DEFINE_ABSTRACT_TYPE because we need the klass in the _init
* method to get to the padtemplates */
@ -515,6 +519,8 @@ gst_video_decoder_class_init (GstVideoDecoderClass * klass)
klass->decide_allocation = gst_video_decoder_decide_allocation_default;
klass->propose_allocation = gst_video_decoder_propose_allocation_default;
klass->negotiate = gst_video_decoder_negotiate_default;
klass->sink_query = gst_video_decoder_sink_query_default;
klass->src_query = gst_video_decoder_src_query_default;
}
static void
@ -1384,13 +1390,11 @@ gst_video_decoder_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
}
static gboolean
gst_video_decoder_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
gst_video_decoder_src_query_default (GstVideoDecoder * dec, GstQuery * query)
{
GstVideoDecoder *dec;
GstPad *pad = GST_VIDEO_DECODER_SRC_PAD (dec);
gboolean res = TRUE;
dec = GST_VIDEO_DECODER (parent);
GST_LOG_OBJECT (dec, "handling query: %" GST_PTR_FORMAT, query);
switch (GST_QUERY_TYPE (query)) {
@ -1432,7 +1436,7 @@ gst_video_decoder_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
GstFormat format;
/* upstream in any case */
if ((res = gst_pad_query_default (pad, parent, query)))
if ((res = gst_pad_query_default (pad, GST_OBJECT (dec), query)))
break;
gst_query_parse_duration (query, &format, NULL);
@ -1498,7 +1502,7 @@ gst_video_decoder_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
}
break;
default:
res = gst_pad_query_default (pad, parent, query);
res = gst_pad_query_default (pad, GST_OBJECT (dec), query);
}
return res;
@ -1508,14 +1512,32 @@ error:
}
static gboolean
gst_video_decoder_sink_query (GstPad * pad, GstObject * parent,
GstQuery * query)
gst_video_decoder_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
GstVideoDecoder *decoder;
GstVideoDecoderClass *decoder_class;
gboolean ret = FALSE;
decoder = GST_VIDEO_DECODER (parent);
decoder_class = GST_VIDEO_DECODER_GET_CLASS (decoder);
GST_DEBUG_OBJECT (decoder, "received query %d, %s", GST_QUERY_TYPE (query),
GST_QUERY_TYPE_NAME (query));
if (decoder_class->src_query)
ret = decoder_class->src_query (decoder, query);
return ret;
}
static gboolean
gst_video_decoder_sink_query_default (GstVideoDecoder * decoder,
GstQuery * query)
{
GstPad *pad = GST_VIDEO_DECODER_SINK_PAD (decoder);
GstVideoDecoderPrivate *priv;
gboolean res = FALSE;
decoder = GST_VIDEO_DECODER (parent);
priv = decoder->priv;
GST_LOG_OBJECT (decoder, "handling query: %" GST_PTR_FORMAT, query);
@ -1543,7 +1565,7 @@ gst_video_decoder_sink_query (GstPad * pad, GstObject * parent,
break;
}
default:
res = gst_pad_query_default (pad, parent, query);
res = gst_pad_query_default (pad, GST_OBJECT (decoder), query);
break;
}
done:
@ -1552,6 +1574,27 @@ done:
error:
GST_DEBUG_OBJECT (decoder, "query failed");
goto done;
}
static gboolean
gst_video_decoder_sink_query (GstPad * pad, GstObject * parent,
GstQuery * query)
{
GstVideoDecoder *decoder;
GstVideoDecoderClass *decoder_class;
gboolean ret = FALSE;
decoder = GST_VIDEO_DECODER (parent);
decoder_class = GST_VIDEO_DECODER_GET_CLASS (decoder);
GST_DEBUG_OBJECT (decoder, "received query %d, %s", GST_QUERY_TYPE (query),
GST_QUERY_TYPE_NAME (query));
if (decoder_class->sink_query)
ret = decoder_class->sink_query (decoder, query);
return ret;
}
typedef struct _Timestamp Timestamp;

19
gst-libs/gst/video/gstvideodecoder.h
View file

@ -244,6 +244,16 @@ struct _GstVideoDecoder
* @flush: Optional.
* Flush all remaining data from the decoder without
* pushing it downstream. Since: 1.2
* @sink_query: Optional.
* Query handler on the sink pad. This function should
* return TRUE if the query could be performed. Subclasses
* should chain up to the parent implementation to invoke the
* default handler. Since 1.4
* @src_query: Optional.
* Query handler on the source pad. This function should
* return TRUE if the query could be performed. Subclasses
* should chain up to the parent implementation to invoke the
* default handler. Since 1.4
*
* Subclasses can override any of the available virtual methods or not, as
* needed. At minimum @handle_frame needs to be overridden, and @set_format
@ -294,8 +304,15 @@ struct _GstVideoDecoderClass
gboolean (*flush) (GstVideoDecoder *decoder);
gboolean (*sink_query) (GstVideoDecoder *decoder,
GstQuery *query);
gboolean (*src_query) (GstVideoDecoder *decoder,
GstQuery *query);
/*< private >*/
void *padding[GST_PADDING_LARGE-1];
void *padding[GST_PADDING_LARGE-3];
};
GType gst_video_decoder_get_type (void);