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plugins: allow copies of GstVaapiVideoMeta objects.

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Make it possible to copy GstVaapiVideoMeta objects, unless they contain VA
objects created from GstVaapiVideoPool. This is mostly useful to clone a
GstVaapiVideoMeta object containing a VA surface proxy so that to alter its
rendering flags.
This commit is contained in:
Gwenole Beauchesne 2013-04-04 17:36:45 +02:00
parent 8fe0011450
commit c8db926547
2 changed files with 59 additions and 3 deletions
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58
gst/vaapi/gstvaapivideometa.c
View file

@ -137,12 +137,24 @@ gst_vaapi_video_meta_init(GstVaapiVideoMeta *meta)
meta->render_flags = 0;
}
static inline GstVaapiVideoMeta *
_gst_vaapi_video_meta_create(void)
{
return g_slice_new(GstVaapiVideoMeta);
}
static inline void
_gst_vaapi_video_meta_destroy(GstVaapiVideoMeta *meta)
{
g_slice_free1(sizeof(*meta), meta);
}
static inline GstVaapiVideoMeta *
_gst_vaapi_video_meta_new(void)
{
GstVaapiVideoMeta *meta;
meta = g_slice_alloc(sizeof(*meta));
meta = _gst_vaapi_video_meta_create();
if (!meta)
return NULL;
gst_vaapi_video_meta_init(meta);
@ -157,7 +169,44 @@ _gst_vaapi_video_meta_free(GstVaapiVideoMeta *meta)
gst_vaapi_video_meta_finalize(meta);
if (G_LIKELY(g_atomic_int_dec_and_test(&meta->ref_count)))
g_slice_free1(sizeof(*meta), meta);
_gst_vaapi_video_meta_destroy(meta);
}
/**
* gst_vaapi_video_meta_copy:
* @meta: a #GstVaapiVideoMeta
*
* Creates a copy of #GstVaapiVideoMeta object @meta. The original
* @meta object shall not contain any VA objects created from a
* #GstVaapiVideoPool.
*
* Return value: the newly allocated #GstVaapiVideoMeta, or %NULL on error
*/
GstVaapiVideoMeta *
gst_vaapi_video_meta_copy(GstVaapiVideoMeta *meta)
{
GstVaapiVideoMeta *copy;
g_return_val_if_fail(GST_VAAPI_IS_VIDEO_META(meta), NULL);
if (meta->image_pool || meta->surface_pool)
return NULL;
copy = _gst_vaapi_video_meta_create();
if (!copy)
return NULL;
copy->ref_count = 1;
copy->display = g_object_ref(meta->display);
copy->image_pool = NULL;
copy->image = meta->image ? g_object_ref(meta->image) : NULL;
copy->surface_pool = NULL;
copy->surface = meta->surface ? g_object_ref(meta->surface) : NULL;
copy->proxy = meta->proxy ?
gst_vaapi_surface_proxy_ref(meta->proxy) : NULL;
copy->converter = meta->converter;
copy->render_flags = meta->render_flags;
return copy;
}
/**
@ -681,7 +730,10 @@ gst_vaapi_video_meta_holder_transform(GstBuffer *dst_buffer, GstMeta *meta,
GST_VAAPI_VIDEO_META_HOLDER(meta);
if (GST_META_TRANSFORM_IS_COPY(type)) {
gst_buffer_set_vaapi_video_meta(dst_buffer, src_meta->meta);
GstVaapiVideoMeta * const dst_meta =
gst_vaapi_video_meta_copy(src_meta->meta);
gst_buffer_set_vaapi_video_meta(dst_buffer, dst_meta);
gst_vaapi_video_meta_unref(dst_meta);
return TRUE;
}
return FALSE;

4
gst/vaapi/gstvaapivideometa.h
View file

@ -42,6 +42,10 @@ GType
gst_vaapi_video_meta_api_get_type(void) G_GNUC_CONST;
#endif
G_GNUC_INTERNAL
GstVaapiVideoMeta *
gst_vaapi_video_meta_copy(GstVaapiVideoMeta *meta);
G_GNUC_INTERNAL
GstVaapiVideoMeta *
gst_vaapi_video_meta_new(GstVaapiDisplay *display);