[gst-devel] source plugin blocked in PAUSE state

[Riccardo Corona]

Ok,
I've started from the plugin template from cvs as suggested on plugin writer
manual.
All that I've done was to change the base class to gst_base_src, just to see
if I can create my own plugin deriving it from base_src.
Here's some snippet:


.h

#include <gst/base/gstbasesrc.h>

G_BEGIN_DECLS

/* #defines don't like whitespacey bits */
#define GST_TYPE_PLUGIN_TEMPLATE \
  (gst_plugin_template_get_type())/*(gst_base_src_get_type())*/
#define GST_PLUGIN_TEMPLATE(obj) \

(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PLUGIN_TEMPLATE,GstPluginTattile))
#define GST_PLUGIN_TEMPLATE_CLASS(klass) \

(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PLUGIN_TEMPLATE,GstPluginTattileClass))
#define GST_IS_PLUGIN_TEMPLATE(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PLUGIN_TEMPLATE))
#define GST_IS_PLUGIN_TEMPLATE_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PLUGIN_TEMPLATE))

typedef struct _GstMyPlugin GstMyPlugin ;
typedef struct _GstMyPlugin Class GstMyPlugin Class;

struct _GstMyPlugin
{
  GstBaseSrc element;

  GstPad *srcpad;

  gboolean silent;
};

struct _GstMyPlugin Class
{
  GstBaseSrcClass parent_class;
};

GType gst_plugin_template_get_type (void);

G_END_DECLS

#endif /* __GST_PLUGIN_TEMPLATE_H__ */



And .c :



#include "gstplugin.h"

GST_DEBUG_CATEGORY_STATIC (gst_plugin_template_debug);
#define GST_CAT_DEFAULT gst_plugin_template_debug

/* Filter signals and args */
enum
{
  /* FILL ME */
  LAST_SIGNAL
};

enum
{
  ARG_0,
  ARG_SILENT
};

static GstFlowReturn create (GstBaseSrc *src, guint64 offset, guint size,
                         GstBuffer **buf);


static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
    GST_PAD_SRC,
    GST_PAD_ALWAYS,
    GST_STATIC_CAPS ("ANY")
    );

GST_BOILERPLATE (GstMyPlugin, gst_plugin_template, GstBaseSrc ,
    GST_TYPE_BASE_SRC);

static void gst_plugin_template_set_property (GObject * object, guint
prop_id,
    const GValue * value, GParamSpec * pspec);
static void gst_plugin_template_get_property (GObject * object, guint
prop_id,
    GValue * value, GParamSpec * pspec);

static gboolean gst_plugin_template_set_caps (GstPad * pad, GstCaps * caps);
static GstFlowReturn gst_plugin_template_chain (GstPad * pad, GstBuffer *
buf);

.........

I'm omitting the implementation of these function because I haven't touched
the plugin template from cvs, I've only erased all the references to the
sink element since I'm trying to write a src plugin.

Thank's.






2007/6/29, René Stadler <mail at renestadler.de>:
>
> Am Freitag, den 29.06.2007, 18:34 +0200 schrieb Riccardo Corona:
> > I've wrote the vmethod create() and set the type as GST_TYPE_BASE_SRC,
> > but now gst-inspect give me this  error :
>
> > CRITICAL **: file E:\devel-cvs\src\gstreamer\gst\gstelementfactory.c:
> > line 266: assertion `g_type_is_a (type, GST_TYPE_ELEMENT)'
> >  failed
> >
> This indicates a problem with the setup of your element.  Could be
> anything.  No one can help you without seeing your code.
>
>
> <snipped away mess of previous mails>
>
> --
> Regards,
>   René Stadler
>
>


-- 
Riccardo Corona
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