gstreamer/tools/gstbasetransform.c
David Schleef f6f9563dc8 tools: Add element-maker
Add a script that creates elements based on any of the GStreamer
base classes.  It isn't very user friendly at the moment, one
needs to edit the script to make it work properly.  Each base class
has a template file describing what to put into the constructed
element.  Eventually, these templates should be moved to reside
with the base class source and installed to a well-known directory,
where an installed script could find them.

The template files use the .c ending so editors know they are C
source, but gst-indent doesn't handle them correctly.  So they
need to be committed with -n.  Ugh.  I'll try to figure out a fix
for that soon.
2010-04-14 16:43:23 -07:00

154 lines
4.3 KiB
C

% ClassName
GstBaseTransform
% TYPE_CLASS_NAME
GST_TYPE_BASE_TRANSFORM
% pkg-config
gstreamer-base-0.10
% includes
#include <gst/base/gstbasetransform.h>
% prototypes
static GstCaps *gst_replace_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps);
static void
gst_replace_fixate_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps);
static gboolean
gst_replace_transform_size (GstBaseTransform * trans,
GstPadDirection direction,
GstCaps * caps, guint size, GstCaps * othercaps, guint * othersize);
static gboolean
gst_replace_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
guint * size);
static gboolean
gst_replace_set_caps (GstBaseTransform * trans, GstCaps * incaps,
GstCaps * outcaps);
static gboolean gst_replace_start (GstBaseTransform * trans);
static gboolean gst_replace_stop (GstBaseTransform * trans);
static gboolean gst_replace_event (GstBaseTransform * trans, GstEvent * event);
static GstFlowReturn
gst_replace_transform (GstBaseTransform * trans, GstBuffer * inbuf,
GstBuffer * outbuf);
static GstFlowReturn
gst_replace_transform_ip (GstBaseTransform * trans, GstBuffer * buf);
static GstFlowReturn
gst_replace_prepare_output_buffer (GstBaseTransform * trans,
GstBuffer * input, gint size, GstCaps * caps, GstBuffer ** buf);
static gboolean
gst_replace_src_event (GstBaseTransform * trans, GstEvent * event);
static void
gst_replace_before_transform (GstBaseTransform * trans, GstBuffer * buffer);
% declare-class
GstBaseTransformClass *base_transform_class = GST_BASE_TRANSFORM_CLASS (klass);
% set-methods
base_transform_class->transform_caps = GST_DEBUG_FUNCPTR (gst_replace_transform_caps);
base_transform_class->fixate_caps = GST_DEBUG_FUNCPTR (gst_replace_fixate_caps);
base_transform_class->transform_size = GST_DEBUG_FUNCPTR (gst_replace_transform_size);
base_transform_class->get_unit_size = GST_DEBUG_FUNCPTR (gst_replace_get_unit_size);
base_transform_class->set_caps = GST_DEBUG_FUNCPTR (gst_replace_set_caps);
base_transform_class->start = GST_DEBUG_FUNCPTR (gst_replace_start);
base_transform_class->stop = GST_DEBUG_FUNCPTR (gst_replace_stop);
base_transform_class->event = GST_DEBUG_FUNCPTR (gst_replace_event);
base_transform_class->transform = GST_DEBUG_FUNCPTR (gst_replace_transform);
base_transform_class->transform_ip = GST_DEBUG_FUNCPTR (gst_replace_transform_ip);
base_transform_class->prepare_output_buffer = GST_DEBUG_FUNCPTR (gst_replace_prepare_output_buffer);
base_transform_class->src_event = GST_DEBUG_FUNCPTR (gst_replace_src_event);
base_transform_class->before_transform = GST_DEBUG_FUNCPTR (gst_replace_before_transform);
% methods
static GstCaps *
gst_replace_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps)
{
return NULL;
}
static void
gst_replace_fixate_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
{
}
static gboolean
gst_replace_transform_size (GstBaseTransform * trans,
GstPadDirection direction,
GstCaps * caps, guint size, GstCaps * othercaps, guint * othersize)
{
return FALSE;
}
static gboolean
gst_replace_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
guint * size)
{
return FALSE;
}
static gboolean
gst_replace_set_caps (GstBaseTransform * trans, GstCaps * incaps,
GstCaps * outcaps)
{
return FALSE;
}
static gboolean
gst_replace_start (GstBaseTransform * trans)
{
return FALSE;
}
static gboolean
gst_replace_stop (GstBaseTransform * trans)
{
return FALSE;
}
static gboolean
gst_replace_event (GstBaseTransform * trans, GstEvent * event)
{
return FALSE;
}
static GstFlowReturn
gst_replace_transform (GstBaseTransform * trans, GstBuffer * inbuf,
GstBuffer * outbuf)
{
return GST_FLOW_ERROR;
}
static GstFlowReturn
gst_replace_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
{
return GST_FLOW_ERROR;
}
static GstFlowReturn
gst_replace_prepare_output_buffer (GstBaseTransform * trans,
GstBuffer * input, gint size, GstCaps * caps, GstBuffer ** buf)
{
return GST_FLOW_ERROR;
}
static gboolean
gst_replace_src_event (GstBaseTransform * trans, GstEvent * event)
{
return FALSE;
}
static void
gst_replace_before_transform (GstBaseTransform * trans, GstBuffer * buffer)
{
}
% end