handle 0-length buffers

Originally committed as revision 2731 to svn://svn.ffmpeg.org/ffmpeg/trunk
21 years ago · c89c1d2542
parent 2c8b796fa9
commit c89c1d2542
1 changed files with 3 additions and 0 deletions
--- a/libavcodec/dpcm.c
+++ b/libavcodec/dpcm.c
@ -125,6 +125,9 @@ static int dpcm_decode_frame(AVCodecContext *avctx,
    unsigned char byte;
    short diff;

+    if (!buf_size)
+        return 0;
+
    switch(avctx->codec->id) {

    case CODEC_ID_ROQ_DPCM: