audiodecoder: Add sink and src query virtual method

API: GstAudioDecoderClass::src_query()
API: GstAudioDecoderClass::sink_query()

https://bugzilla.gnome.org/show_bug.cgi?id=747293
This commit is contained in:
Wonchul Lee 2015-04-03 00:44:12 +09:00 committed by Tim-Philipp Müller
parent 2891509ec4
commit 5dffb8a311
2 changed files with 67 additions and 14 deletions

View File

@ -383,6 +383,10 @@ static gboolean gst_audio_decoder_negotiate_default (GstAudioDecoder * dec);
static gboolean gst_audio_decoder_negotiate_unlocked (GstAudioDecoder * dec);
static gboolean gst_audio_decoder_handle_gap (GstAudioDecoder * dec,
GstEvent * event);
static gboolean gst_audio_decoder_sink_query_default (GstAudioDecoder * dec,
GstQuery * query);
static gboolean gst_audio_decoder_src_query_default (GstAudioDecoder * dec,
GstQuery * query);
static GstElementClass *parent_class = NULL;
@ -470,6 +474,10 @@ gst_audio_decoder_class_init (GstAudioDecoderClass * klass)
GST_DEBUG_FUNCPTR (gst_audio_decoder_decide_allocation_default);
audiodecoder_class->negotiate =
GST_DEBUG_FUNCPTR (gst_audio_decoder_negotiate_default);
audiodecoder_class->sink_query =
GST_DEBUG_FUNCPTR (gst_audio_decoder_sink_query_default);
audiodecoder_class->src_query =
GST_DEBUG_FUNCPTR (gst_audio_decoder_src_query_default);
}
static void
@ -2541,15 +2549,11 @@ gst_audio_decoder_sink_getcaps (GstAudioDecoder * decoder, GstCaps * filter)
return caps;
}
static gboolean
gst_audio_decoder_sink_query (GstPad * pad, GstObject * parent,
GstQuery * query)
gst_audio_decoder_sink_query_default (GstAudioDecoder * dec, GstQuery * query)
{
GstPad *pad = GST_AUDIO_DECODER_SINK_PAD (dec);
gboolean res = FALSE;
GstAudioDecoder *dec;
dec = GST_AUDIO_DECODER (parent);
GST_LOG_OBJECT (dec, "handling query: %" GST_PTR_FORMAT, query);
@ -2630,7 +2634,7 @@ gst_audio_decoder_sink_query (GstPad * pad, GstObject * parent,
/* fall-through */
}
default:
res = gst_pad_query_default (pad, parent, query);
res = gst_pad_query_default (pad, GST_OBJECT_CAST (dec), query);
break;
}
@ -2638,18 +2642,35 @@ error:
return res;
}
static gboolean
gst_audio_decoder_sink_query (GstPad * pad, GstObject * parent,
GstQuery * query)
{
GstAudioDecoderClass *dec_class;
GstAudioDecoder *dec;
gboolean ret = FALSE;
dec = GST_AUDIO_DECODER (parent);
dec_class = GST_AUDIO_DECODER_GET_CLASS (dec);
GST_DEBUG_OBJECT (pad, "received query %" GST_PTR_FORMAT, query);
if (dec_class->sink_query)
ret = dec_class->sink_query (dec, query);
return ret;
}
/* FIXME ? are any of these queries (other than latency) a decoder's business ??
* also, the conversion stuff might seem to make sense, but seems to not mind
* segment stuff etc at all
* Supposedly that's backward compatibility ... */
static gboolean
gst_audio_decoder_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
gst_audio_decoder_src_query_default (GstAudioDecoder * dec, GstQuery * query)
{
GstAudioDecoder *dec;
GstPad *pad = GST_AUDIO_DECODER_SRC_PAD (dec);
gboolean res = FALSE;
dec = GST_AUDIO_DECODER (parent);
GST_LOG_OBJECT (dec, "handling query: %" GST_PTR_FORMAT, query);
switch (GST_QUERY_TYPE (query)) {
@ -2658,7 +2679,7 @@ gst_audio_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_CAST (dec), query)))
break;
gst_query_parse_duration (query, &format, NULL);
@ -2755,13 +2776,31 @@ gst_audio_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_CAST (dec), query);
break;
}
return res;
}
static gboolean
gst_audio_decoder_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
GstAudioDecoder *dec;
GstAudioDecoderClass *dec_class;
gboolean ret = FALSE;
dec = GST_AUDIO_DECODER (parent);
dec_class = GST_AUDIO_DECODER_GET_CLASS (dec);
GST_DEBUG_OBJECT (pad, "received query %" GST_PTR_FORMAT, query);
if (dec_class->src_query)
ret = dec_class->src_query (dec, query);
return ret;
}
static gboolean
gst_audio_decoder_stop (GstAudioDecoder * dec)
{

View File

@ -231,6 +231,16 @@ struct _GstAudioDecoder
* Propose buffer allocation parameters for upstream elements.
* Subclasses should chain up to the parent implementation to
* invoke the default handler.
* @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 1.6
* @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 1.6
* @getcaps: Optional.
* Allows for a custom sink getcaps implementation.
* If not implemented,
@ -283,11 +293,15 @@ struct _GstAudioDecoderClass
gboolean (*propose_allocation) (GstAudioDecoder *dec,
GstQuery * query);
gboolean (*sink_query) (GstAudioDecoder *dec, GstQuery *query);
gboolean (*src_query) (GstAudioDecoder *dec, GstQuery *query);
GstCaps * (*getcaps) (GstAudioDecoder * dec,
GstCaps * filter);
/*< private >*/
gpointer _gst_reserved[GST_PADDING_LARGE - 1];
gpointer _gst_reserved[GST_PADDING_LARGE - 3];
};
GType gst_audio_decoder_get_type (void);