From 4e42debc8d61587d123a4adf9f1c5694cef25ba9 Mon Sep 17 00:00:00 2001
From: Alex Converse <alex.converse@gmail.com>
Date: Mon, 28 Jun 2010 21:50:57 +0000
Subject: [PATCH] aacenc: Start the lookahead pointer 1/4 of the way into the
 first short window.

Short windows are of length 256 and begin at sample 448.

Originally committed as revision 23871 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/aacenc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/aacenc.c b/libavcodec/aacenc.c
index 6d66c66862..1aaaf3ac9e 100644
--- a/libavcodec/aacenc.c
+++ b/libavcodec/aacenc.c
@@ -519,7 +519,7 @@ static int aac_encode_frame(AVCodecContext *avctx,
         chans    = tag == TYPE_CPE ? 2 : 1;
         cpe      = &s->cpe[i];
         samples2 = samples + start_ch;
-        la       = samples2 + 1024 * avctx->channels + start_ch;
+        la       = samples2 + (448+64) * avctx->channels + start_ch;
         if (!data)
             la = NULL;
         for (j = 0; j < chans; j++) {