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libs: surface: Add hints to allocation flags.

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When creating surfaces it is possible to pass to VA hints of its usage,
so the driver may do some optimizations.

This commit adds the handling of encoding/decoding hints.
This commit is contained in:
Víctor Manuel Jáquez Leal 2020-01-24 19:32:52 +01:00
parent 8c08ef31a5
commit 96fdc3d322
2 changed files with 27 additions and 1 deletions
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23
gst-libs/gst/vaapi/gstvaapisurface.c
View file

@ -129,6 +129,21 @@ error_unsupported_chroma_type:
return FALSE;
}
static guint
get_usage_hint (guint alloc_flags)
{
guint usage_hints = VA_SURFACE_ATTRIB_USAGE_HINT_GENERIC;
/* XXX(victor): So far, only media-driver uses hints for encoders
* and it doesn't test it as bitwise */
if (alloc_flags & GST_VAAPI_SURFACE_ALLOC_FLAG_HINT_DECODER)
usage_hints = VA_SURFACE_ATTRIB_USAGE_HINT_DECODER;
else if (alloc_flags & GST_VAAPI_SURFACE_ALLOC_FLAG_HINT_ENCODER)
usage_hints = VA_SURFACE_ATTRIB_USAGE_HINT_ENCODER;
return usage_hints;
}
static gboolean
gst_vaapi_surface_init_full (GstVaapiSurface * surface,
const GstVideoInfo * vip, guint surface_allocation_flags)
@ -139,7 +154,7 @@ gst_vaapi_surface_init_full (GstVaapiSurface * surface,
VAStatus status;
guint chroma_type, va_chroma_format, i;
const VAImageFormat *va_format;
VASurfaceAttrib attribs[3], *attrib;
VASurfaceAttrib attribs[4], *attrib;
VASurfaceAttribExternalBuffers extbuf = { 0, };
gboolean extbuf_needed = FALSE;
@ -182,6 +197,12 @@ gst_vaapi_surface_init_full (GstVaapiSurface * surface,
attrib->value.value.i = va_format->fourcc;
attrib++;
attrib->flags = VA_SURFACE_ATTRIB_SETTABLE;
attrib->type = VASurfaceAttribUsageHint;
attrib->value.type = VAGenericValueTypeInteger;
attrib->value.value.i = get_usage_hint (surface_allocation_flags);
attrib++;
if (extbuf_needed) {
attrib->flags = VA_SURFACE_ATTRIB_SETTABLE;
attrib->type = VASurfaceAttribMemoryType;

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

@ -165,6 +165,9 @@ typedef enum
* the supplied strides information from #GstVideoInfo
* @GST_VAAPI_SURFACE_ALLOC_FLAG_FIXED_OFFSETS: force allocation with
* the supplied offsets information from #GstVideoInfo
* @GST_VAAPI_SURFACE_ALLOC_FLAG_HINT_DECODER: Surface used by video
* decoder
* @GST_VAAPI_SURFACE_ALLOC_FLAG_HINT_ENCODER: Surface used by encoder
*
* The set of optional allocation flags for gst_vaapi_surface_new_full().
*/
@ -173,6 +176,8 @@ typedef enum
GST_VAAPI_SURFACE_ALLOC_FLAG_LINEAR_STORAGE = 1 << 0,
GST_VAAPI_SURFACE_ALLOC_FLAG_FIXED_STRIDES = 1 << 1,
GST_VAAPI_SURFACE_ALLOC_FLAG_FIXED_OFFSETS = 1 << 2,
GST_VAAPI_SURFACE_ALLOC_FLAG_HINT_DECODER = 1 << 3,
GST_VAAPI_SURFACE_ALLOC_FLAG_HINT_ENCODER = 1 << 4,
} GstVaapiSurfaceAllocFlags;
#define GST_VAAPI_SURFACE(obj) \