[Bug 788229] plugins: memory:DMABuf only handles planar formats

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=788229

Konstantin Ripak <konstantin.ripak at cogentembedded.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |konstantin.ripak at cogentembe
                   |                            |dded.com

--- Comment #4 from Konstantin Ripak <konstantin.ripak at cogentembedded.com> ---
Actually, when I tried to render NV12 DMA buffer from vaapih264 decoder I faced
with the issue that strides/offsets in GstVideoMeta are wrong. The following
simplified snippet retrieves correct strides/offsets:

GstVaapiVideoMeta *meta = gst_buffer_get_vaapi_video_meta(buf);
GstVaapiSurface *surface = gst_vaapi_video_meta_get_surface(meta);
GstVaapiImage* image = gst_vaapi_surface_derive_image(surface);
VAImage va_image = {0};

gst_vaapi_image_get_image(image, &va_image))

gsize offsets[4] = {va_image.offsets[0],
                    va_image.offsets[1],
                    va_image.offsets[2],
                    0};
gint stride[4] = {va_image.pitches[0],
                  va_image.pitches[1],
                  va_image.pitches[2],
                  0};

GstVideoMeta* vmeta = gst_buffer_add_video_meta_full(outbuf,
                GST_VIDEO_FRAME_FLAG_NONE, gst_vaapi_image_get_format(image),
va_image.width, va_image.height, va_image.num_planes, offsets, stride);

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