Ext-intra modification/tuning
For ext-intra direcation intra modes:
1. Use neighbor block modes to modify edge filtering strength
Coding gain (lowres/midres/hdres):
(8 keyframes)
PSNR: -0.19 -0.22 -0.10
SSIM: -0.29 -0.27 -0.13
2. Use context-based cdf to code angle_delta syntax
(8 keyframes)
PSNR: -0.20 -0.24 -0.27
SSIM: -0.29 -0.33 -0.37
3. Filter corner sample:
(8 keyframes)
PSNR: -0.01 -0.02 -0.05
SSIM: -0.03 -0.04 -0.05
Combined Bd-rate improvement for 8 keyframes
PSNR: -0.40 -0.47 -0.40
SSIM: -0.57 -0.60 -0.51
Change-Id: Id47ac17b6bf91cd810b70cacfc5b457341f417f3
diff --git a/av1/common/enums.h b/av1/common/enums.h
index a114469..7f2f1c9 100644
--- a/av1/common/enums.h
+++ b/av1/common/enums.h
@@ -628,6 +628,8 @@
#if CONFIG_EXT_INTRA
#define DIRECTIONAL_MODES 8
+#define MAX_ANGLE_DELTA 3
+#define ANGLE_STEP 3
#endif // CONFIG_EXT_INTRA
#define INTER_MODES (1 + NEWMV - NEARESTMV)
