Add types as nal unit types, slice types and vvc typedefs needed
for parsing vvc high-level syntax.
Signed-off-by: Thomas Siedel <thomas...@spin-digital.com>
---
libavcodec/vvc.h | 142 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 142 insertions(+)
create mode 100644 libavcodec/vvc.h
diff --git a/libavcodec/vvc.h b/libavcodec/vvc.h
new file mode 100644
index 0000000000..586934a7bf
--- /dev/null
+++ b/libavcodec/vvc.h
@@ -0,0 +1,142 @@
+/*
+ * VVC shared code
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_VVC_H
+#define AVCODEC_VVC_H
+
+/**
+ * Table 5 – NAL unit type codes and NAL unit type classes
+ * in T-REC-H.266-202008
+ */
+enum VVCNALUnitType {
+ VVC_TRAIL_NUT = 0,
+ VVC_STSA_NUT = 1,
+ VVC_RADL_NUT = 2,
+ VVC_RASL_NUT = 3,
+ VVC_RSV_VCL_4 = 4,
+ VVC_RSV_VCL_5 = 5,
+ VVC_RSV_VCL_6 = 6,
+ VVC_IDR_W_RADL = 7,
+ VVC_IDR_N_LP = 8,
+ VVC_CRA_NUT = 9,
+ VVC_GDR_NUT = 10,
+ VVC_RSV_IRAP_11 = 11,
+ VVC_OPI_NUT = 12,
+ VVC_DCI_NUT = 13,
+ VVC_VPS_NUT = 14,
+ VVC_SPS_NUT = 15,
+ VVC_PPS_NUT = 16,
+ VVC_PREFIX_APS_NUT = 17,
+ VVC_SUFFIX_APS_NUT = 18,
+ VVC_PH_NUT = 19,
+ VVC_AUD_NUT = 20,
+ VVC_EOS_NUT = 21,
+ VVC_EOB_NUT = 22,
+ VVC_PREFIX_SEI_NUT = 23,
+ VVC_SUFFIX_SEI_NUT = 24,
+ VVC_FD_NUT = 25,
+ VVC_RSV_NVCL_26 = 26,
+ VVC_RSV_NVCL_27 = 27,
+ VVC_UNSPEC_28 = 28,
+ VVC_UNSPEC_29 = 29,
+ VVC_UNSPEC_30 = 30,
+ VVC_UNSPEC_31 = 31,
+};
+
+enum VVCSliceType {
+ VVC_SLICE_TYPE_B = 0,
+ VVC_SLICE_TYPE_P = 1,
+ VVC_SLICE_TYPE_I = 2,
+};
+
+enum {
+ //6.2 we can have 3 sample arrays
+ VVC_MAX_SAMPLE_ARRAYS = 3,
+
+ //7.4.3.3 vps_max_layers_minus1 is u(6)
+ VVC_MAX_LAYERS = 64,
+
+ //7.4.3.3 The value of vps_max_sublayers_minus1 shall be in the range of 0
to 6, inclusive
+ VVC_MAX_SUBLAYERS = 7,
+
+ //7.4.3.3 vps_num_ptls_minus1 is u(8)
+ VVC_MAX_PTLS = 256,
+
+ //7.4.3.3 vps_num_output_layer_sets_minus2 is u(8)
+ VVC_MAX_TOTAL_NUM_OLSS = 257,
+
+ // 7.3.2.3: vps_video_parameter_set_id is u(4).
+ VVC_MAX_VPS_COUNT = 16,
+ // 7.3.2.4: sps_seq_parameter_set_id is u(4)
+ VVC_MAX_SPS_COUNT = 16,
+ // 7.3.2.5: pps_pic_parameter_set_id is u(6)
+ VVC_MAX_PPS_COUNT = 64,
+
+ // 7.4.4.1: ptl_num_sub_profiles is u(8)
+ VVC_MAX_SUB_PROFILES = 256,
+
+ // A.4.2: according to (1577), MaxDpbSize is bounded above by 2 *
maxDpbPicBuf(8)
+ VVC_MAX_DPB_SIZE = 16,
+
+ //7.4.3.4 sps_num_ref_pic_lists in range [0, 64]
+ VVC_MAX_REF_PIC_LISTS = 64,
+
+ //7.4.11 num_ref_entries in range [0, MaxDpbSize + 13]
+ VVC_MAX_REF_ENTRIES = VVC_MAX_DPB_SIZE + 13,
+
+ //7.4.3.3 sps_num_points_in_qp_table_minus1[i] in range [0, 36 −
sps_qp_table_start_minus26[i]],
+ //sps_qp_table_start_minus26[i] in range [sps_qp_table_start_minus26[i]
−26 − QpBdOffset, 36]
+ //for 10 bitsQpBdOffset is 12, so sps_num_points_in_qp_table_minus1[i] in
range [0, 74]
+ VVC_MAX_POINTS_IN_QP_TABLE = 75,
+
+ // 7.4.6.1: hrd_cpb_cnt_minus1 is in [0, 31].
+ VVC_MAX_CPB_CNT = 32,
+
+ // A.4.1: the highest level allows a MaxLumaPs of 35 651 584.
+ VVC_MAX_LUMA_PS = 35651584,
+
+ // A.4.1: pic_width_in_luma_samples and pic_height_in_luma_samples are
+ // constrained to be not greater than sqrt(MaxLumaPs * 8). Hence height/
+ // width are bounded above by sqrt(8 * 35651584) = 16888.2 samples.
+ VVC_MAX_WIDTH = 16888,
+ VVC_MAX_HEIGHT = 16888,
+
+ // A.4.1: table A.1 allows at most 440 tiles per au for any level.
+ VVC_MAX_TILES_PER_AU = 440,
+ // A.4.1: table A.1 did not define max tile rows.
+ // in worest a case, we can have 1x440 tiles picture.
+ VVC_MAX_TILE_ROWS = VVC_MAX_TILES_PER_AU,
+ // A.4.1: table A.1 allows at most 20 tile columns for any level.
+ VVC_MAX_TILE_COLUMNS = 20,
+
+ // A.4.1 table A.1 allows at most 600 slice for any level.
+ VVC_MAX_SLICES = 600,
+
+ // 7.4.8: in the worst case (!pps_no_pic_partition_flag and
+ // sps_entropy_coding_sync_enabled_flag are both true), entry points can be
+ // placed at the beginning of every Ctb row in every tile, giving an
+ // upper bound of (num_tile_columns_minus1 + 1) * PicHeightInCtbsY - 1.
+ // Only a stream with very high resolution and perverse parameters could
+ // get near that, though, so set a lower limit here with the maximum
+ // possible value for 8K video (at most 135 32x32 Ctb rows).
+ VVC_MAX_ENTRY_POINTS = VVC_MAX_TILE_COLUMNS * 135,
+};
+
+#endif /* AVCODEC_VVC_H */
--
2.25.1
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