From 8045c0167dbe9779f75d1c23a97f501eca92d33e Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sat, 19 Jan 2013 01:40:10 +0100
Subject: [PATCH] sws: Only reset dither state for bitexact mode
the output looks better with a random initial state than
all 0
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libswscale/swscale.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index dbe61c7a97..bf0c13013a 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -910,7 +910,7 @@ int attribute_align_arg sws_scale(struct SwsContext *c,
src2[0] = base;
}
- if (!srcSliceY && (c->flags & SWS_ERROR_DIFFUSION))
+ if (!srcSliceY && (c->flags & SWS_BITEXACT) && (c->flags & SWS_ERROR_DIFFUSION))
for (i = 0; i < 4; i++)
memset(c->dither_error[i], 0, sizeof(c->dither_error[0][0]) * (c->dstW+2));