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surface pool config based on video info

Browse source 
First added the function gst_vaapi_video_format_get_best_native(), which
returns the best native format that matches a particular chroma type:

YUV 4:2:0 -> NV12, YUV 4:2:2 -> YUY2, YUV 4:0:0 -> Y800

RGB32 chroma and encoded format map to NV12 too.

That format is used to configure, initially, the surface's pool for the
allocator.

Signed-off-by: Víctor Manuel Jáquez Leal <victorx.jaquez@intel.com>

https://bugzilla.gnome.org/show_bug.cgi?id=744042
This commit is contained in:
Víctor Manuel Jáquez Leal 2015-07-23 20:07:59 +02:00 committed by Víctor Manuel Jáquez Leal
parent 940dc1a18e
commit ceb70c3ca6
3 changed files with 38 additions and 1 deletions
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32
gst-libs/gst/vaapi/video-format.c
View file

@ -270,3 +270,35 @@ gst_vaapi_video_format_get_score (GstVideoFormat format)
return m ? (m - &gst_vaapi_video_formats[0]) : G_MAXUINT;
}
/**
* gst_vaapi_video_format_get_best_native:
* @format: a #GstVideoFormat
*
* Returns the best "native" pixel format that matches a particular
* color-space.
*
* Returns: the #GstVideoFormat with the corresponding best native
* format for #GstVaapiSurface
**/
GstVideoFormat
gst_vaapi_video_format_get_best_native (GstVideoFormat format)
{
GstVaapiChromaType chroma_type;
if (format == GST_VIDEO_FORMAT_ENCODED)
return GST_VIDEO_FORMAT_NV12;
chroma_type = gst_vaapi_video_format_get_chroma_type (format);
switch (chroma_type) {
case GST_VAAPI_CHROMA_TYPE_YUV422:
return GST_VIDEO_FORMAT_YUY2;
case GST_VAAPI_CHROMA_TYPE_YUV400:
return GST_VIDEO_FORMAT_GRAY8;
case GST_VAAPI_CHROMA_TYPE_YUV420:
case GST_VAAPI_CHROMA_TYPE_RGB32: /* GstVideoGLTextureUploadMeta */
return GST_VIDEO_FORMAT_NV12;
default:
return GST_VIDEO_FORMAT_UNKNOWN;
};
}

3
gst-libs/gst/vaapi/video-format.h
View file

@ -53,6 +53,9 @@ gst_vaapi_video_format_get_chroma_type (GstVideoFormat format);
guint
gst_vaapi_video_format_get_score (GstVideoFormat format);
GstVideoFormat
gst_vaapi_video_format_get_best_native (GstVideoFormat format);
G_END_DECLS
#endif /* GST_VAAPI_VIDEO_FORMAT_H */

4
gst/vaapi/gstvaapivideomemory.c
View file

@ -659,10 +659,12 @@ allocator_configure_surface_info (GstVaapiDisplay * display,
GstVaapiSurface *surface = NULL;
GstVaapiImage *image = NULL;
gboolean updated;
GstVideoFormat fmt;
vinfo = &allocator->video_info;
gst_video_info_set_format (&allocator->surface_info, GST_VIDEO_FORMAT_NV12,
fmt = gst_vaapi_video_format_get_best_native (GST_VIDEO_INFO_FORMAT (vinfo));
gst_video_info_set_format (&allocator->surface_info, fmt,
GST_VIDEO_INFO_WIDTH (vinfo), GST_VIDEO_INFO_HEIGHT (vinfo));
/* nothing to configure */