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authorPaul B Mahol2016-09-15 17:24:40 +0200
committerPaul B Mahol2016-09-15 17:24:40 +0200
commitb82c1a377a2b11663561189208f57c6c639f8ec6 (patch)
tree1fe782f97aa91abca36539262c4eff3273395350 /libavcodec/adpcm.c
parent4d677c7ae37d1df57cc79ea7577c2e4cd1de8e3a (diff)
avcodec/adpcm: clip step for ADPCM MTAF decoder
Signed-off-by: Paul B Mahol <onemda@gmail.com>
Diffstat (limited to 'libavcodec/adpcm.c')
-rw-r--r--libavcodec/adpcm.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index 06ba83e3c3..cb7f644f66 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -909,8 +909,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
case AV_CODEC_ID_ADPCM_MTAF:
for (channel = 0; channel < avctx->channels; channel+=2) {
bytestream2_skipu(&gb, 4);
- c->status[channel ].step = bytestream2_get_le16u(&gb);
- c->status[channel + 1].step = bytestream2_get_le16u(&gb);
+ c->status[channel ].step = bytestream2_get_le16u(&gb) & 0x1f;
+ c->status[channel + 1].step = bytestream2_get_le16u(&gb) & 0x1f;
c->status[channel ].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
bytestream2_skipu(&gb, 2);
c->status[channel + 1].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);