gst-libs/gst/audio/gstaudiofilter.c: Implement get_unit_size() vmethod of GstBaseTran...

Original commit message from CVS:
* gst-libs/gst/audio/gstaudiofilter.c:
(gst_audio_filter_class_init), (gst_audio_filter_get_unit_size):
Implement get_unit_size() vmethod of GstBaseTransform.

diff --git a/ChangeLog b/ChangeLog
index 9a3157f..c0dea48 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2008-01-02  Sebastian Dröge  <slomo@circular-chaos.org>
+
+       * gst-libs/gst/audio/gstaudiofilter.c:
+       (gst_audio_filter_class_init), (gst_audio_filter_get_unit_size):
+       Implement get_unit_size() vmethod of GstBaseTransform.
+
 2008-01-01  Edward Hervey  <edward.hervey@collabora.co.uk>
 
        * gst-libs/gst/pbutils/Makefile.am:

diff --git a/gst-libs/gst/audio/gstaudiofilter.c b/gst-libs/gst/audio/gstaudiofilter.c
index 71c0aaf..c0bb26d 100644 (file)
--- a/gst-libs/gst/audio/gstaudiofilter.c
+++ b/gst-libs/gst/audio/gstaudiofilter.c
@@ -65,6 +65,8 @@ static GstStateChangeReturn gst_audio_filter_change_state (GstElement * element,
     GstStateChange transition);
 static gboolean gst_audio_filter_set_caps (GstBaseTransform * btrans,
     GstCaps * incaps, GstCaps * outcaps);
+static gboolean gst_audio_filter_get_unit_size (GstBaseTransform * btrans,
+    GstCaps * caps, guint * size);
 
 static GstElementClass *parent_class = NULL;
 
@@ -117,6 +119,8 @@ gst_audio_filter_class_init (gpointer klass, gpointer class_data)
   gstelement_class->change_state =
       GST_DEBUG_FUNCPTR (gst_audio_filter_change_state);
   basetrans_class->set_caps = GST_DEBUG_FUNCPTR (gst_audio_filter_set_caps);
+  basetrans_class->get_unit_size =
+      GST_DEBUG_FUNCPTR (gst_audio_filter_get_unit_size);
 }
 
 static void
@@ -189,6 +193,25 @@ gst_audio_filter_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
   return ret;
 }
 
+static gboolean
+gst_audio_filter_get_unit_size (GstBaseTransform * btrans, GstCaps * caps,
+    guint * size)
+{
+  GstStructure *structure;
+  gboolean ret = TRUE;
+  gint width, channels;
+
+  structure = gst_caps_get_structure (caps, 0);
+
+  ret &= gst_structure_get_int (structure, "width", &width);
+  ret &= gst_structure_get_int (structure, "channels", &channels);
+
+  if (ret)
+    *size = (width / 8) * channels;
+
+  return ret;
+}
+
 /**
  * gst_audio_filter_class_add_pad_templates:
  * @klass: an #GstAudioFilterClass