diff --git a/libavcodec/hevc/hevcdec.c b/libavcodec/hevc/hevcdec.c index 0e4b26dad3..6b3cf0fec3 100644 --- a/libavcodec/hevc/hevcdec.c +++ b/libavcodec/hevc/hevcdec.c @@ -621,6 +621,10 @@ static int hls_slice_header(SliceHeader *sh, const HEVCContext *s, GetBitContext if (pps->dependent_slice_segments_enabled_flag) sh->dependent_slice_segment_flag = get_bits1(gb); + if (sh->dependent_slice_segment_flag && !s->slice_initialized) { + av_log(s->avctx, AV_LOG_ERROR, "Independent slice segment missing.\n"); + return AVERROR_INVALIDDATA; + } slice_address_length = av_ceil_log2(sps->ctb_width * sps->ctb_height); @@ -893,9 +897,6 @@ static int hls_slice_header(SliceHeader *sh, const HEVCContext *s, GetBitContext } else { sh->slice_loop_filter_across_slices_enabled_flag = pps->seq_loop_filter_across_slices_enabled_flag; } - } else if (!s->slice_initialized) { - av_log(s->avctx, AV_LOG_ERROR, "Independent slice segment missing.\n"); - return AVERROR_INVALIDDATA; } sh->num_entry_point_offsets = 0; @@ -3155,8 +3156,11 @@ static int decode_slice(HEVCContext *s, const H2645NAL *nal, GetBitContext *gb) int ret; ret = hls_slice_header(&s->sh, s, gb); - if (ret < 0) + if (ret < 0) { + // hls_slice_header() does not cleanup on failure thus the state now is inconsistant so we cannot use it on depandant slices + s->slice_initialized = 0; return ret; + } if ((s->avctx->skip_frame >= AVDISCARD_BIDIR && s->sh.slice_type == HEVC_SLICE_B) || (s->avctx->skip_frame >= AVDISCARD_NONINTRA && s->sh.slice_type != HEVC_SLICE_I) ||