Add support for MPEG2 quantization matrices

This adds support for MPEG2 quantization matrices, which are optional
given that fallback default matrices are used (on the kernel side) when
no such matrix is provided.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>

src/picture.c

@@ -109,6 +109,14 @@ static VAStatus codec_store_buffer(struct request_data *driver_data,
 
 	case VAIQMatrixBufferType:
 		switch (profile) {
+		case VAProfileMPEG2Simple:
+		case VAProfileMPEG2Main:
+			memcpy(&surface_object->params.mpeg2.iqmatrix,
+			       buffer_object->data,
+			       sizeof(surface_object->params.mpeg2.iqmatrix));
+			surface_object->params.mpeg2.iqmatrix_set = true;
+			break;
+
 		case VAProfileH264Main:
 		case VAProfileH264High:
 		case VAProfileH264ConstrainedBaseline: