Fix ttmbf/ttfrm when vstransform is 0 on HSW

This is the same fix of c7d23b1

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/src/gen75_mfd.c b/src/gen75_mfd.c
index a4269f8..f2aad00 100644
--- a/src/gen75_mfd.c
+++ b/src/gen75_mfd.c
@@ -1919,9 +1919,20 @@ gen75_mfd_vc1_pic_state(VADriverContextP ctx,
 
     if (picture_type == GEN7_VC1_I_PICTURE || picture_type == GEN7_VC1_BI_PICTURE) /* I picture */
         trans_ac_y = pic_param->transform_fields.bits.transform_ac_codingset_idx2;
-    else
+    else {
         trans_ac_y = pic_param->transform_fields.bits.transform_ac_codingset_idx1;
 
+        /*
+         * 8.3.6.2.1 Transform Type Selection
+         * If variable-sized transform coding is not enabled,
+         * then the 8x8 transform shall be used for all blocks.
+         * it is also MFX_VC1_PIC_STATE requirement.
+         */
+        if (pic_param->transform_fields.bits.variable_sized_transform_flag == 0) {
+            pic_param->transform_fields.bits.mb_level_transform_type_flag   = 1;
+            pic_param->transform_fields.bits.frame_level_transform_type     = 0;
+        }
+    }
 
     if (picture_type == GEN7_VC1_B_PICTURE) {
         struct gen7_vc1_surface *gen7_vc1_surface = NULL;