avcodec/pcx: fix decoding with AVFrame's negative linesize

1 year ago · cdf0931fdb
parent ee357d6991
commit cdf0931fdb
1 changed files with 2 additions and 1 deletions
--- a/libavcodec/pcx.c
+++ b/libavcodec/pcx.c
@ -75,9 +75,10 @@ static int pcx_decode_frame(AVCodecContext *avctx, AVFrame *p,
    GetByteContext gb;
    int compressed, xmin, ymin, xmax, ymax;
    int ret;
-    unsigned int w, h, bits_per_pixel, bytes_per_line, nplanes, stride, y, x,
+    unsigned int w, h, bits_per_pixel, bytes_per_line, nplanes, y, x,
                 bytes_per_scanline;
    uint8_t *ptr, *scanline;
+    ptrdiff_t stride;

    if (avpkt->size < PCX_HEADER_SIZE) {
        av_log(avctx, AV_LOG_ERROR, "Packet too small\n");