Having issues using GstMeta in GStreamer 1.0.5

[Cruzer]

Hi,
I am using the GstMeta to send some informations across elements, my
pipeline is Source->Sink.
I have written my own source and sink elements,

this is my GstMeta implementation.

//MyMetaInfo.h

G_BEGIN_DECLS

typedef struct _MyMetaInfo MyMetaInfo;

struct _MyMetaInfo
{
    GstMeta Meta;

    ri::FrameInfo FrameMetaInfo; // This is a structure holds some frame
information like width height integers.
};

GType my_meta_info_api_get_type (void);
#define MY_META_INFO_API_TYPE (my_meta_info_api_get_type())

const GstMetaInfo *my_meta_get_info (void);
#define MY_META_INFO (my_meta_get_info())

#define GST_MY_META_GET(b) \
  ((MyMetaInfo*)gst_buffer_get_meta((b),MY_META_INFO_API_TYPE))
#define GST_MY_META_ADD(b) \
  ((MyMetaInfo*)gst_buffer_add_meta((b),MY_META_INFO,NULL))

G_END_DECLS


//MyMetaInfo.cpp

#include "MyMetaInfo.h"

GType my_meta_info_api_get_type (void)
{
    static volatile GType type;
    static const gchar *tags[] = { "buffer", "meta", NULL };

    if (g_once_init_enter (&type))
    {
        GType _type = gst_meta_api_type_register ("MyMetaInfoAPI", tags);
        g_once_init_leave (&type, _type);
    }

    return type;
}

const GstMetaInfo* my_meta_get_info (void)
{
  static const GstMetaInfo *meta_info = NULL;

  if (g_once_init_enter (&meta_info))
  {
    const GstMetaInfo *meta = gst_meta_register (MY_META_INFO_API_TYPE,
"MyMetaInfo",
        sizeof (MyMetaInfo),
        (GstMetaInitFunction) NULL,
        (GstMetaFreeFunction) NULL, (GstMetaTransformFunction) NULL);

    g_once_init_leave (&meta_info, meta);
  }

  return meta_info;
}

Can anyone tell me what I am missing?

Thanks,
Bose.
 



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