diff options
| author | Linjie Fu <linjie.fu@intel.com> | 2020-01-15 15:01:28 +0800 |
|---|---|---|
| committer | Mark Thompson <sw@jkqxz.net> | 2020-02-24 00:09:51 +0000 |
| commit | 0d83fcc07b31c528c4fb95528b8e50c440eefc87 (patch) | |
| tree | d18d8711b24f8e15646b47c41da74335259230c2 /libavcodec/hevc_ps.c | |
| parent | aa6b2e1604c285e16109d0377e0bb5e8b4fbe13e (diff) | |
lavc/hevc_ps: parse constraint flags for HEVC REXT
Parse all the constraint flags according to ITU-T Rec. H.265 (02/2018).
They have to be passed to hw decoders to determine the exact profile for Range
Extension HEVC.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>
Diffstat (limited to 'libavcodec/hevc_ps.c')
| -rw-r--r-- | libavcodec/hevc_ps.c | 42 |
1 files changed, 38 insertions, 4 deletions
diff --git a/libavcodec/hevc_ps.c b/libavcodec/hevc_ps.c index a30b8b8022..ea6fd536c6 100644 --- a/libavcodec/hevc_ps.c +++ b/libavcodec/hevc_ps.c @@ -267,7 +267,7 @@ static int decode_profile_tier_level(GetBitContext *gb, AVCodecContext *avctx, { int i; - if (get_bits_left(gb) < 2+1+5 + 32 + 4 + 16 + 16 + 12) + if (get_bits_left(gb) < 2+1+5 + 32 + 4 + 43 + 1) return -1; ptl->profile_space = get_bits(gb, 2); @@ -295,9 +295,43 @@ static int decode_profile_tier_level(GetBitContext *gb, AVCodecContext *avctx, ptl->non_packed_constraint_flag = get_bits1(gb); ptl->frame_only_constraint_flag = get_bits1(gb); - 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] +#define check_profile_idc(idc) \ + ptl->profile_idc == idc || ptl->profile_compatibility_flag[idc] + + if (check_profile_idc(4) || check_profile_idc(5) || check_profile_idc(6) || + check_profile_idc(7) || check_profile_idc(8) || check_profile_idc(9) || + check_profile_idc(10)) { + + ptl->max_12bit_constraint_flag = get_bits1(gb); + ptl->max_10bit_constraint_flag = get_bits1(gb); + ptl->max_8bit_constraint_flag = get_bits1(gb); + ptl->max_422chroma_constraint_flag = get_bits1(gb); + ptl->max_420chroma_constraint_flag = get_bits1(gb); + ptl->max_monochrome_constraint_flag = get_bits1(gb); + ptl->intra_constraint_flag = get_bits1(gb); + ptl->one_picture_only_constraint_flag = get_bits1(gb); + ptl->lower_bit_rate_constraint_flag = get_bits1(gb); + + if (check_profile_idc(5) || check_profile_idc(9) || check_profile_idc(10)) { + ptl->max_14bit_constraint_flag = get_bits1(gb); + skip_bits_long(gb, 33); // XXX_reserved_zero_33bits[0..32] + } else { + skip_bits_long(gb, 34); // XXX_reserved_zero_34bits[0..33] + } + } else if (check_profile_idc(2)) { + skip_bits(gb, 7); + ptl->one_picture_only_constraint_flag = get_bits1(gb); + skip_bits_long(gb, 35); // XXX_reserved_zero_35bits[0..34] + } else { + skip_bits_long(gb, 43); // XXX_reserved_zero_43bits[0..42] + } + + if (check_profile_idc(1) || check_profile_idc(2) || check_profile_idc(3) || + check_profile_idc(4) || check_profile_idc(5) || check_profile_idc(9)) + ptl->inbld_flag = get_bits1(gb); + else + skip_bits1(gb); +#undef check_profile_idc return 0; } |