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libs: context: ensure context formats

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This patch ensures to get the formats, as filter does, available in the
decoder / encoder context.

The context fills up the array as soon it is created, otherwise the pipeline
could get stalled (perhaps this is a bug in my HSW backend).

https://bugzilla.gnome.org/show_bug.cgi?id=752958
This commit is contained in:
Víctor Manuel Jáquez Leal 2016-02-18 19:32:58 +01:00
parent d1581ba557
commit 71264ede6f
2 changed files with 46 additions and 0 deletions
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41
gst-libs/gst/vaapi/gstvaapicontext.c
View file

@ -50,6 +50,18 @@
/* Number of scratch surfaces beyond those used as reference */
#define SCRATCH_SURFACES_COUNT (4)
static gboolean
ensure_formats (GstVaapiContext * context)
{
if (G_LIKELY (context->formats))
return TRUE;
context->formats =
gst_vaapi_get_surface_formats (GST_VAAPI_OBJECT_DISPLAY (context),
context->va_config);
return (context->formats != NULL);
}
static void
unref_surface_cb (GstVaapiSurface * surface)
{
@ -106,6 +118,11 @@ context_destroy (GstVaapiContext * context)
GST_WARNING ("failed to destroy config 0x%08x", context->va_config);
context->va_config = VA_INVALID_ID;
}
if (context->formats) {
g_array_unref (context->formats);
context->formats = NULL;
}
}
static gboolean
@ -325,6 +342,8 @@ gst_vaapi_context_init (GstVaapiContext * context,
context->va_config = VA_INVALID_ID;
context->reset_on_resize = TRUE;
gst_vaapi_context_overlay_init (context);
context->formats = NULL;
}
static void
@ -520,3 +539,25 @@ gst_vaapi_context_reset_on_resize (GstVaapiContext * context,
context->reset_on_resize = reset_on_resize;
}
/**
* gst_vaapi_context_get_surface_formats:
* @context: a #GstVaapiContext
*
* Determines the set of supported formats by the surfaces associated
* to @context. The caller owns an extra reference of the resulting
* array of #GstVideoFormat elements, so it shall be released with
* g_array_unref after usage.
*
* Return value: (transfer full): the set of target formats supported
* by the surfaces in @context.
*/
GArray *
gst_vaapi_context_get_surface_formats (GstVaapiContext * context)
{
g_return_val_if_fail (context, NULL);
if (!ensure_formats (context))
return NULL;
return g_array_ref (context->formats);
}

5
gst-libs/gst/vaapi/gstvaapicontext.h
View file

@ -109,6 +109,7 @@ struct _GstVaapiContext
GPtrArray *overlays[2];
guint overlay_id;
gboolean reset_on_resize;
GArray *formats;
};
/**
@ -149,6 +150,10 @@ void
gst_vaapi_context_reset_on_resize (GstVaapiContext * context,
gboolean reset_on_resize);
G_GNUC_INTERNAL
GArray *
gst_vaapi_context_get_surface_formats (GstVaapiContext * context);
G_END_DECLS
#endif /* GST_VAAPI_CONTEXT_H */