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image: add gst_vaapi_image_format_from_structure() helper.

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Add helper function to convert video formats from a GstStructure to a
plain GstVaapiImageFormat.
This commit is contained in:
Gwenole Beauchesne 2013-03-20 11:10:31 +01:00
parent 833ebf9cae
commit c756766805
2 changed files with 23 additions and 4 deletions
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24
gst-libs/gst/vaapi/gstvaapiimageformat.c
View file

@ -171,11 +171,7 @@ gst_vaapi_image_format(const VAImageFormat *va_format)
GstVaapiImageFormat
gst_vaapi_image_format_from_caps(GstCaps *caps)
{
const GstVaapiImageFormatMap *m;
GstStructure *structure;
VAImageFormat *va_format, va_formats[2];
gint endian, rmask, gmask, bmask, amask = 0;
guint32 fourcc;
if (!caps)
return 0;
@ -183,6 +179,26 @@ gst_vaapi_image_format_from_caps(GstCaps *caps)
structure = gst_caps_get_structure(caps, 0);
if (!structure)
return 0;
return gst_vaapi_image_format_from_structure(structure);
}
/**
* gst_vaapi_image_format_from_structure:
* @structure: a #GstStructure
*
* Converts @structure into the corresponding #GstVaapiImageFormat. If
* the image format cannot be represented by #GstVaapiImageFormat,
* then zero is returned.
*
* Return value: the #GstVaapiImageFormat describing the @structure
*/
GstVaapiImageFormat
gst_vaapi_image_format_from_structure(GstStructure *structure)
{
const GstVaapiImageFormatMap *m;
VAImageFormat *va_format, va_formats[2];
gint endian, rmask, gmask, bmask, amask = 0;
guint32 fourcc;
/* Check for YUV format */
if (gst_structure_get_fourcc(structure, "format", &fourcc))

3
gst-libs/gst/vaapi/gstvaapiimageformat.h
View file

@ -72,6 +72,9 @@ gst_vaapi_image_format(const VAImageFormat *va_format);
GstVaapiImageFormat
gst_vaapi_image_format_from_caps(GstCaps *caps);
GstVaapiImageFormat
gst_vaapi_image_format_from_structure(GstStructure *structure);
GstVaapiImageFormat
gst_vaapi_image_format_from_fourcc(guint32 fourcc);