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hevc: don't check for errors in PTL code

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According to the spec, the value of XXX_reserved_zero_44bits should be
ignored, so don't report an error when it's not zero.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Guillaume Martres 2013-12-14 15:50:29 +01:00 committed by Anton Khirnov
parent 321cb8b048
commit 67bbaed5c4
1 changed files with 9 additions and 24 deletions
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33
libavcodec/hevc_ps.c
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@ -192,7 +192,7 @@ int ff_hevc_decode_short_term_rps(HEVCContext *s, ShortTermRPS *rps,
return 0;
}
static int decode_profile_tier_level(HEVCLocalContext *lc, PTL *ptl,
static void decode_profile_tier_level(HEVCLocalContext *lc, PTL *ptl,
int max_num_sub_layers)
{
int i, j;
@ -207,12 +207,9 @@ static int decode_profile_tier_level(HEVCLocalContext *lc, PTL *ptl,
skip_bits1(gb); // general_interlaced_source_flag
skip_bits1(gb); // general_non_packed_constraint_flag
skip_bits1(gb); // general_frame_only_constraint_flag
if (get_bits(gb, 16) != 0) // XXX_reserved_zero_44bits[0..15]
return -1;
if (get_bits(gb, 16) != 0) // XXX_reserved_zero_44bits[16..31]
return -1;
if (get_bits(gb, 12) != 0) // XXX_reserved_zero_44bits[32..43]
return -1;
skip_bits(gb, 16); // XXX_reserved_zero_44bits[0..15]
skip_bits(gb, 16); // XXX_reserved_zero_44bits[16..31]
skip_bits(gb, 12); // XXX_reserved_zero_44bits[32..43]
ptl->general_level_idc = get_bits(gb, 8);
for (i = 0; i < max_num_sub_layers - 1; i++) {
@ -234,17 +231,13 @@ static int decode_profile_tier_level(HEVCLocalContext *lc, PTL *ptl,
skip_bits1(gb); // sub_layer_non_packed_constraint_flag
skip_bits1(gb); // sub_layer_frame_only_constraint_flag
if (get_bits(gb, 16) != 0) // sub_layer_reserved_zero_44bits[0..15]
return -1;
if (get_bits(gb, 16) != 0) // sub_layer_reserved_zero_44bits[16..31]
return -1;
if (get_bits(gb, 12) != 0) // sub_layer_reserved_zero_44bits[32..43]
return -1;
skip_bits(gb, 16); // sub_layer_reserved_zero_44bits[0..15]
skip_bits(gb, 16); // sub_layer_reserved_zero_44bits[16..31]
skip_bits(gb, 12); // sub_layer_reserved_zero_44bits[32..43]
}
if (ptl->sub_layer_level_present_flag[i])
ptl->sub_layer_level_idc[i] = get_bits(gb, 8);
}
return 0;
}
static void decode_sublayer_hrd(HEVCContext *s, int nb_cpb,
@ -362,10 +355,7 @@ int ff_hevc_decode_nal_vps(HEVCContext *s)
goto err;
}
if (decode_profile_tier_level(&s->HEVClc, &vps->ptl, vps->vps_max_sub_layers) < 0) {
av_log(s->avctx, AV_LOG_ERROR, "Error decoding profile tier level.\n");
goto err;
}
decode_profile_tier_level(&s->HEVClc, &vps->ptl, vps->vps_max_sub_layers);
vps->vps_sub_layer_ordering_info_present_flag = get_bits1(gb);
i = vps->vps_sub_layer_ordering_info_present_flag ? 0 : vps->vps_max_sub_layers - 1;
@ -647,12 +637,7 @@ int ff_hevc_decode_nal_sps(HEVCContext *s)
}
skip_bits1(gb); // temporal_id_nesting_flag
if (decode_profile_tier_level(&s->HEVClc, &sps->ptl,
sps->max_sub_layers) < 0) {
av_log(s->avctx, AV_LOG_ERROR, "error decoding profile tier level\n");
ret = AVERROR_INVALIDDATA;
goto err;
}
decode_profile_tier_level(&s->HEVClc, &sps->ptl, sps->max_sub_layers);
sps_id = get_ue_golomb_long(gb);
if (sps_id >= MAX_SPS_COUNT) {
av_log(s->avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", sps_id);