prores: skip alpha if present

13 years ago · 8a73246391
parent 3a87dce6bf
commit 8a73246391
1 changed files with 1 additions and 0 deletions
--- a/libavcodec/proresdec.c
+++ b/libavcodec/proresdec.c
@ -480,6 +480,7 @@ static int decode_slice_thread(AVCodecContext *avctx, void *arg, int jobnr, int
    y_data_size = AV_RB16(buf + 2);
    u_data_size = AV_RB16(buf + 4);
    v_data_size = slice->data_size - y_data_size - u_data_size - hdr_size;
+    if (hdr_size > 7) v_data_size = AV_RB16(buf + 6);

    if (y_data_size < 0 || u_data_size < 0 || v_data_size < 0) {
        av_log(avctx, AV_LOG_ERROR, "invalid plane data size\n");