1 files changed, 6 insertions, 0 deletions
diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index d24acbc145..eafb0363db 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -612,6 +612,12 @@ static int adpcm_decode_init(AVCodecContext * avctx)
     case CODEC_ID_ADPCM_CT:
         c->status[0].step = c->status[1].step = 511;
         break;
+    case CODEC_ID_ADPCM_IMA_WS:
+        if (avctx->extradata && avctx->extradata_size == 2 * 4) {
+            c->status[0].predictor = AV_RL32(avctx->extradata);
+            c->status[1].predictor = AV_RL32(avctx->extradata + 4);
+        }
+        break;
     default:
         break;
     }