From: Baptiste Coudurier <baptiste.coudurier@smartjog.com>
Date: Wed, 18 Jul 2007 18:40:03 +0000 (+0000)
Subject: Set the step index correctly for flash adpcm. Patch by Baptiste
X-Git-Tag: v0.5~8252
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ac0691071e3bd6b188ec324a5817937a35d5b5a8;p=platform%2Fupstream%2Flibav.git

Set the step index correctly for flash adpcm. Patch by Baptiste
Coudurier.

Originally committed as revision 9743 to svn://svn.ffmpeg.org/ffmpeg/trunk
---

diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index 5539cf941..9111a7ac1 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -531,8 +531,9 @@ static int adpcm_encode_frame(AVCodecContext *avctx,
 
         //Init the encoder state
         for(i=0; i<avctx->channels; i++){
+            c->status[i].step_index = av_clip(c->status[i].step_index, 0, 63); // clip step so it fits 6 bits
             put_bits(&pb, 16, samples[i] & 0xFFFF);
-            put_bits(&pb, 6, c->status[i].step_index & 0x3F);
+            put_bits(&pb, 6, c->status[i].step_index);
             c->status[i].prev_sample = (signed short)samples[i];
         }