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xan: Prevent NULL dereference with missing palette

Signed-off-by: Janne Grunau <janne-libav@jannau.net>
This commit is contained in:
Laurent Aimar 2011-09-29 03:12:07 +00:00 committed by Janne Grunau
parent 3db3fdf4c6
commit 7d17a794f0

View File

@ -553,6 +553,11 @@ static int xan_decode_frame(AVCodecContext *avctx,
} }
buf_size = buf_end - buf; buf_size = buf_end - buf;
} }
if (s->palettes_count <= 0) {
av_log(s->avctx, AV_LOG_ERROR, "No palette found\n");
return AVERROR_INVALIDDATA;
}
if ((ret = avctx->get_buffer(avctx, &s->current_frame))) { if ((ret = avctx->get_buffer(avctx, &s->current_frame))) {
av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n"); av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret; return ret;