fixing overflow in 16->8 bit conversion, patch by (Nikolai Zhubr <s001 at hotbox dot ru>)

Originally committed as revision 913 to svn://svn.ffmpeg.org/ffmpeg/trunk
23 years ago · 0eaec10550
parent b2a0a7fb8a
commit 0eaec10550
1 changed files with 2 additions and 2 deletions
--- a/libavcodec/pcm.c
+++ b/libavcodec/pcm.c
@ -209,14 +209,14 @@ static int pcm_encode_frame(AVCodecContext *avctx,
    case CODEC_ID_PCM_S8:
        for(;n>0;n--) {
            v = *samples++;
-            dst[0] = (v + 128) >> 8;
+            dst[0] = v >> 8;
            dst++;
        }
        break;
    case CODEC_ID_PCM_U8:
        for(;n>0;n--) {
            v = *samples++;
-            dst[0] = ((v + 128) >> 8) + 128;
+            dst[0] = (v >> 8) + 128;
            dst++;
        }
        break;