Attachment 51444 Details for Bug 40820 – patch for implicit weighted prediction on Sandybridge

[patch] patch for implicit weighted prediction on Sandybridge

0001-workaround-for-implicit-mode-weighted-prediction-on-.patch (text/plain), 1.30 KB, created by haihao on 2011-09-20 23:38:17 UTC

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Creator: haihao

Created: 2011-09-20 23:38:17 UTC

Size: 1.30 KB

patch

obsolete

>From 93059cb9c601e3c49972d190a8e4267e139cbc67 Mon Sep 17 00:00:00 2001
>From: "Xiang, Haihao" <haihao.xiang@intel.com>
>Date: Wed, 21 Sep 2011 14:32:17 +0800
>Subject: [PATCH] workaround for implicit mode weighted prediction on
> Sandybridge
>
>Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
>---
> src/gen6_mfd.c |   10 +++++++++-
> 1 files changed, 9 insertions(+), 1 deletions(-)
>
>diff --git a/src/gen6_mfd.c b/src/gen6_mfd.c
>index c4c93f7..823999b 100644
>--- a/src/gen6_mfd.c
>+++ b/src/gen6_mfd.c
>@@ -709,7 +709,15 @@ gen6_mfd_avc_slice_state(VADriverContextP ctx,
>     } else {
>         num_ref_idx_l0 = slice_param->num_ref_idx_l0_active_minus1 + 1;
>         num_ref_idx_l1 = slice_param->num_ref_idx_l1_active_minus1 + 1;
>-        weighted_pred_idc = (pic_param->pic_fields.bits.weighted_bipred_idc == 1);
>+        weighted_pred_idc = pic_param->pic_fields.bits.weighted_bipred_idc;
>+
>+        if (weighted_pred_idc == 2 &&
>+            !mbaff_picture &&
>+            num_ref_idx_l0 == 1 &&
>+            num_ref_idx_l1 == 1 &&
>+            (slice_param->RefPicList0[0].TopFieldOrderCnt + 
>+             slice_param->RefPicList1[0].TopFieldOrderCnt) == 2 * pic_param->CurrPic.TopFieldOrderCnt)
>+            weighted_pred_idc = 0;
>     }
> 
>     first_mb_in_slice = slice_param->first_mb_in_slice << mbaff_picture;
>-- 
>1.7.5.4
>

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