hevcdec: move parameter set parsing into a separate header

This code is independent from the decoder, so it makes more sense for it
to to have its own header.

7 files changed, 339 insertions, 302 deletions

diff --git a/libavcodec/hevc.h b/libavcodec/hevc.h
index 66816b8409..95366088f8 100644
--- a/libavcodec/hevc.h
+++ b/libavcodec/hevc.h
@@ -62,4 +62,9 @@ enum HEVCNALUnitType {
 #define HEVC_MAX_SHORT_TERM_RPS_COUNT 64
 #define HEVC_MAX_CU_SIZE 128
 
+#define HEVC_MAX_REFS 16
+#define HEVC_MAX_DPB_SIZE 16 // A.4.1
+
+#define HEVC_MAX_LOG2_CTB_SIZE 6
+
 #endif /* AVCODEC_HEVC_H */
diff --git a/libavcodec/hevc_ps.c b/libavcodec/hevc_ps.c
index 44db326cf3..6a8cfebaf7 100644
--- a/libavcodec/hevc_ps.c
+++ b/libavcodec/hevc_ps.c
@@ -26,8 +26,8 @@
 #include "libavutil/imgutils.h"
 
 #include "golomb.h"
-#include "hevcdec.h"
 #include "hevc_data.h"
+#include "hevc_ps.h"
 
 static const uint8_t default_scaling_list_intra[] = {
     16, 16, 16, 16, 17, 18, 21, 24,
@@ -200,8 +200,8 @@ int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
         rps->num_negative_pics = get_ue_golomb_long(gb);
         nb_positive_pics       = get_ue_golomb_long(gb);
 
-        if (rps->num_negative_pics >= MAX_REFS ||
-            nb_positive_pics >= MAX_REFS) {
+        if (rps->num_negative_pics >= HEVC_MAX_REFS ||
+            nb_positive_pics >= HEVC_MAX_REFS) {
             av_log(avctx, AV_LOG_ERROR, "Too many refs in a short term RPS.\n");
             return AVERROR_INVALIDDATA;
         }
@@ -406,7 +406,7 @@ int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,
         vps->vps_num_reorder_pics[i]      = get_ue_golomb_long(gb);
         vps->vps_max_latency_increase[i]  = get_ue_golomb_long(gb) - 1;
 
-        if (vps->vps_max_dec_pic_buffering[i] > MAX_DPB_SIZE) {
+        if (vps->vps_max_dec_pic_buffering[i] > HEVC_MAX_DPB_SIZE) {
             av_log(avctx, AV_LOG_ERROR, "vps_max_dec_pic_buffering_minus1 out of range: %d\n",
                    vps->vps_max_dec_pic_buffering[i] - 1);
             goto err;
@@ -794,7 +794,7 @@ int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
         sps->temporal_layer[i].max_dec_pic_buffering = get_ue_golomb_long(gb) + 1;
         sps->temporal_layer[i].num_reorder_pics      = get_ue_golomb_long(gb);
         sps->temporal_layer[i].max_latency_increase  = get_ue_golomb_long(gb) - 1;
-        if (sps->temporal_layer[i].max_dec_pic_buffering > MAX_DPB_SIZE) {
+        if (sps->temporal_layer[i].max_dec_pic_buffering > HEVC_MAX_DPB_SIZE) {
             av_log(avctx, AV_LOG_ERROR, "sps_max_dec_pic_buffering_minus1 out of range: %d\n",
                    sps->temporal_layer[i].max_dec_pic_buffering - 1);
             ret = AVERROR_INVALIDDATA;
@@ -804,7 +804,7 @@ int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
             av_log(avctx, AV_LOG_WARNING, "sps_max_num_reorder_pics out of range: %d\n",
                    sps->temporal_layer[i].num_reorder_pics);
             if (avctx->err_recognition & AV_EF_EXPLODE ||
-                sps->temporal_layer[i].num_reorder_pics > MAX_DPB_SIZE - 1) {
+                sps->temporal_layer[i].num_reorder_pics > HEVC_MAX_DPB_SIZE - 1) {
                 ret = AVERROR_INVALIDDATA;
                 goto err;
             }
@@ -955,7 +955,7 @@ int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
         goto err;
     }
 
-    if (sps->log2_ctb_size > MAX_LOG2_CTB_SIZE) {
+    if (sps->log2_ctb_size > HEVC_MAX_LOG2_CTB_SIZE) {
         av_log(avctx, AV_LOG_ERROR, "CTB size out of range: 2^%d\n", sps->log2_ctb_size);
         goto err;
     }
diff --git a/libavcodec/hevc_ps.h b/libavcodec/hevc_ps.h
new file mode 100644
index 0000000000..d95aa519e6
--- /dev/null
+++ b/libavcodec/hevc_ps.h
@@ -0,0 +1,320 @@
+/*
+ * HEVC parameter set parsing
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_HEVC_PS_H
+#define AVCODEC_HEVC_PS_H
+
+#include <stdint.h>
+
+#include "libavutil/buffer.h"
+#include "libavutil/pixfmt.h"
+#include "libavutil/rational.h"
+
+#include "avcodec.h"
+#include "get_bits.h"
+#include "hevc.h"
+
+typedef struct ShortTermRPS {
+    unsigned int num_negative_pics;
+    int num_delta_pocs;
+    int rps_idx_num_delta_pocs;
+    int32_t delta_poc[32];
+    uint8_t used[32];
+} ShortTermRPS;
+
+typedef struct HEVCWindow {
+    unsigned int left_offset;
+    unsigned int right_offset;
+    unsigned int top_offset;
+    unsigned int bottom_offset;
+} HEVCWindow;
+
+typedef struct VUI {
+    AVRational sar;
+
+    int overscan_info_present_flag;
+    int overscan_appropriate_flag;
+
+    int video_signal_type_present_flag;
+    int video_format;
+    int video_full_range_flag;
+    int colour_description_present_flag;
+    uint8_t colour_primaries;
+    uint8_t transfer_characteristic;
+    uint8_t matrix_coeffs;
+
+    int chroma_loc_info_present_flag;
+    int chroma_sample_loc_type_top_field;
+    int chroma_sample_loc_type_bottom_field;
+    int neutra_chroma_indication_flag;
+
+    int field_seq_flag;
+    int frame_field_info_present_flag;
+
+    int default_display_window_flag;
+    HEVCWindow def_disp_win;
+
+    int vui_timing_info_present_flag;
+    uint32_t vui_num_units_in_tick;
+    uint32_t vui_time_scale;
+    int vui_poc_proportional_to_timing_flag;
+    int vui_num_ticks_poc_diff_one_minus1;
+    int vui_hrd_parameters_present_flag;
+
+    int bitstream_restriction_flag;
+    int tiles_fixed_structure_flag;
+    int motion_vectors_over_pic_boundaries_flag;
+    int restricted_ref_pic_lists_flag;
+    int min_spatial_segmentation_idc;
+    int max_bytes_per_pic_denom;
+    int max_bits_per_min_cu_denom;
+    int log2_max_mv_length_horizontal;
+    int log2_max_mv_length_vertical;
+} VUI;
+
+typedef struct PTLCommon {
+    uint8_t profile_space;
+    uint8_t tier_flag;
+    uint8_t profile_idc;
+    uint8_t profile_compatibility_flag[32];
+    uint8_t level_idc;
+    uint8_t progressive_source_flag;
+    uint8_t interlaced_source_flag;
+    uint8_t non_packed_constraint_flag;
+    uint8_t frame_only_constraint_flag;
+} PTLCommon;
+
+typedef struct PTL {
+    PTLCommon general_ptl;
+    PTLCommon sub_layer_ptl[HEVC_MAX_SUB_LAYERS];
+
+    uint8_t sub_layer_profile_present_flag[HEVC_MAX_SUB_LAYERS];
+    uint8_t sub_layer_level_present_flag[HEVC_MAX_SUB_LAYERS];
+} PTL;
+
+typedef struct HEVCVPS {
+    uint8_t vps_temporal_id_nesting_flag;
+    int vps_max_layers;
+    int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
+
+    PTL ptl;
+    int vps_sub_layer_ordering_info_present_flag;
+    unsigned int vps_max_dec_pic_buffering[HEVC_MAX_SUB_LAYERS];
+    unsigned int vps_num_reorder_pics[HEVC_MAX_SUB_LAYERS];
+    unsigned int vps_max_latency_increase[HEVC_MAX_SUB_LAYERS];
+    int vps_max_layer_id;
+    int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
+    uint8_t vps_timing_info_present_flag;
+    uint32_t vps_num_units_in_tick;
+    uint32_t vps_time_scale;
+    uint8_t vps_poc_proportional_to_timing_flag;
+    int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
+    int vps_num_hrd_parameters;
+} HEVCVPS;
+
+typedef struct ScalingList {
+    /* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
+     * and size ID 3 only has 2 arrays, not 6. */
+    uint8_t sl[4][6][64];
+    uint8_t sl_dc[2][6];
+} ScalingList;
+
+typedef struct HEVCSPS {
+    int vps_id;
+    int chroma_format_idc;
+    uint8_t separate_colour_plane_flag;
+
+    ///< output (i.e. cropped) values
+    int output_width, output_height;
+    HEVCWindow output_window;
+
+    HEVCWindow pic_conf_win;
+
+    int bit_depth;
+    int pixel_shift;
+    enum AVPixelFormat pix_fmt;
+
+    unsigned int log2_max_poc_lsb;
+    int pcm_enabled_flag;
+
+    int max_sub_layers;
+    struct {
+        int max_dec_pic_buffering;
+        int num_reorder_pics;
+        int max_latency_increase;
+    } temporal_layer[HEVC_MAX_SUB_LAYERS];
+
+    VUI vui;
+    PTL ptl;
+
+    uint8_t scaling_list_enable_flag;
+    ScalingList scaling_list;
+
+    unsigned int nb_st_rps;
+    ShortTermRPS st_rps[HEVC_MAX_SHORT_TERM_RPS_COUNT];
+
+    uint8_t amp_enabled_flag;
+    uint8_t sao_enabled;
+
+    uint8_t long_term_ref_pics_present_flag;
+    uint16_t lt_ref_pic_poc_lsb_sps[32];
+    uint8_t used_by_curr_pic_lt_sps_flag[32];
+    uint8_t num_long_term_ref_pics_sps;
+
+    struct {
+        uint8_t bit_depth;
+        uint8_t bit_depth_chroma;
+        unsigned int log2_min_pcm_cb_size;
+        unsigned int log2_max_pcm_cb_size;
+        uint8_t loop_filter_disable_flag;
+    } pcm;
+    uint8_t sps_temporal_mvp_enabled_flag;
+    uint8_t sps_strong_intra_smoothing_enable_flag;
+
+    unsigned int log2_min_cb_size;
+    unsigned int log2_diff_max_min_coding_block_size;
+    unsigned int log2_min_tb_size;
+    unsigned int log2_max_trafo_size;
+    unsigned int log2_ctb_size;
+    unsigned int log2_min_pu_size;
+
+    int max_transform_hierarchy_depth_inter;
+    int max_transform_hierarchy_depth_intra;
+
+    ///< coded frame dimension in various units
+    int width;
+    int height;
+    int ctb_width;
+    int ctb_height;
+    int ctb_size;
+    int min_cb_width;
+    int min_cb_height;
+    int min_tb_width;
+    int min_tb_height;
+    int min_pu_width;
+    int min_pu_height;
+
+    int hshift[3];
+    int vshift[3];
+
+    int qp_bd_offset;
+} HEVCSPS;
+
+typedef struct HEVCPPS {
+    unsigned int sps_id; ///< seq_parameter_set_id
+
+    uint8_t sign_data_hiding_flag;
+
+    uint8_t cabac_init_present_flag;
+
+    int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
+    int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
+    int pic_init_qp_minus26;
+
+    uint8_t constrained_intra_pred_flag;
+    uint8_t transform_skip_enabled_flag;
+
+    uint8_t cu_qp_delta_enabled_flag;
+    int diff_cu_qp_delta_depth;
+
+    int cb_qp_offset;
+    int cr_qp_offset;
+    uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
+    uint8_t weighted_pred_flag;
+    uint8_t weighted_bipred_flag;
+    uint8_t output_flag_present_flag;
+    uint8_t transquant_bypass_enable_flag;
+
+    uint8_t dependent_slice_segments_enabled_flag;
+    uint8_t tiles_enabled_flag;
+    uint8_t entropy_coding_sync_enabled_flag;
+
+    int num_tile_columns;   ///< num_tile_columns_minus1 + 1
+    int num_tile_rows;      ///< num_tile_rows_minus1 + 1
+    uint8_t uniform_spacing_flag;
+    uint8_t loop_filter_across_tiles_enabled_flag;
+
+    uint8_t seq_loop_filter_across_slices_enabled_flag;
+
+    uint8_t deblocking_filter_control_present_flag;
+    uint8_t deblocking_filter_override_enabled_flag;
+    uint8_t disable_dbf;
+    int beta_offset;    ///< beta_offset_div2 * 2
+    int tc_offset;      ///< tc_offset_div2 * 2
+
+    uint8_t scaling_list_data_present_flag;
+    ScalingList scaling_list;
+
+    uint8_t lists_modification_present_flag;
+    int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
+    int num_extra_slice_header_bits;
+    uint8_t slice_header_extension_present_flag;
+
+    // Inferred parameters
+    unsigned int *column_width;  ///< ColumnWidth
+    unsigned int *row_height;    ///< RowHeight
+    unsigned int *col_bd;        ///< ColBd
+    unsigned int *row_bd;        ///< RowBd
+    int *col_idxX;
+
+    int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
+    int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
+    int *tile_id;           ///< TileId
+    int *tile_pos_rs;       ///< TilePosRS
+    int *min_tb_addr_zs;    ///< MinTbAddrZS
+} HEVCPPS;
+
+typedef struct HEVCParamSets {
+    AVBufferRef *vps_list[HEVC_MAX_VPS_COUNT];
+    AVBufferRef *sps_list[HEVC_MAX_SPS_COUNT];
+    AVBufferRef *pps_list[HEVC_MAX_PPS_COUNT];
+
+    /* currently active parameter sets */
+    const HEVCVPS *vps;
+    const HEVCSPS *sps;
+    const HEVCPPS *pps;
+} HEVCParamSets;
+
+/**
+ * Parse the SPS from the bitstream into the provided HEVCSPS struct.
+ *
+ * @param sps_id the SPS id will be written here
+ * @param apply_defdispwin if set 1, the default display window from the VUI
+ *                         will be applied to the video dimensions
+ * @param vps_list if non-NULL, this function will validate that the SPS refers
+ *                 to an existing VPS
+ */
+int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
+                      int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx);
+
+int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,
+                           HEVCParamSets *ps);
+int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx,
+                           HEVCParamSets *ps, int apply_defdispwin);
+int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
+                           HEVCParamSets *ps);
+
+int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
+                                  ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header);
+
+int ff_hevc_encode_nal_vps(HEVCVPS *vps, unsigned int id,
+                           uint8_t *buf, int buf_size);
+
+#endif /* AVCODEC_HEVC_PS_H */
diff --git a/libavcodec/hevc_ps_enc.c b/libavcodec/hevc_ps_enc.c
index fdf9fb7f40..1e86757d7c 100644
--- a/libavcodec/hevc_ps_enc.c
+++ b/libavcodec/hevc_ps_enc.c
@@ -19,7 +19,7 @@
  */
 
 #include "golomb.h"
-#include "hevcdec.h"
+#include "hevc_ps.h"
 #include "put_bits.h"
 
 static void write_ptl_layer(PutBitContext *pb, PTLCommon *ptl)
diff --git a/libavcodec/hevc_refs.c b/libavcodec/hevc_refs.c
index 82a1157887..0b6beb590f 100644
--- a/libavcodec/hevc_refs.c
+++ b/libavcodec/hevc_refs.c
@@ -278,7 +278,7 @@ int ff_hevc_slice_rpl(HEVCContext *s)
         while (rpl_tmp.nb_refs < sh->nb_refs[list_idx]) {
             for (i = 0; i < FF_ARRAY_ELEMS(cand_lists); i++) {
                 RefPicList *rps = &s->rps[cand_lists[i]];
-                for (j = 0; j < rps->nb_refs && rpl_tmp.nb_refs < MAX_REFS; j++) {
+                for (j = 0; j < rps->nb_refs && rpl_tmp.nb_refs < HEVC_MAX_REFS; j++) {
                     rpl_tmp.list[rpl_tmp.nb_refs]       = rps->list[j];
                     rpl_tmp.ref[rpl_tmp.nb_refs]        = rps->ref[j];
                     rpl_tmp.isLongTerm[rpl_tmp.nb_refs] = i == 2;
diff --git a/libavcodec/hevcdec.c b/libavcodec/hevcdec.c
index 93eb95a265..72fdd22c5e 100644
--- a/libavcodec/hevcdec.c
+++ b/libavcodec/hevcdec.c
@@ -628,7 +628,7 @@ static int hls_slice_header(HEVCContext *s)
                 if (sh->slice_type == B_SLICE)
                     sh->nb_refs[L1] = get_ue_golomb_long(gb) + 1;
             }
-            if (sh->nb_refs[L0] > MAX_REFS || sh->nb_refs[L1] > MAX_REFS) {
+            if (sh->nb_refs[L0] > HEVC_MAX_REFS || sh->nb_refs[L1] > HEVC_MAX_REFS) {
                 av_log(s->avctx, AV_LOG_ERROR, "Too many refs: %d/%d.\n",
                        sh->nb_refs[L0], sh->nb_refs[L1]);
                 return AVERROR_INVALIDDATA;
diff --git a/libavcodec/hevcdec.h b/libavcodec/hevcdec.h
index b4502c0ad8..78080eb757 100644
--- a/libavcodec/hevcdec.h
+++ b/libavcodec/hevcdec.h
@@ -35,20 +35,17 @@
 #include "get_bits.h"
 #include "h2645_parse.h"
 #include "hevc.h"
+#include "hevc_ps.h"
 #include "hevcdsp.h"
 #include "internal.h"
 #include "thread.h"
 #include "videodsp.h"
 
-#define MAX_DPB_SIZE 16 // A.4.1
-#define MAX_REFS 16
-
 //TODO: check if this is really the maximum
 #define MAX_TRANSFORM_DEPTH 5
 
 #define MAX_TB_SIZE 32
 #define MAX_PB_SIZE 64
-#define MAX_LOG2_CTB_SIZE 6
 #define MAX_QP 51
 #define DEFAULT_INTRA_TC_OFFSET 2
 
@@ -220,14 +217,6 @@ enum ScanType {
     SCAN_VERT,
 };
 
-typedef struct ShortTermRPS {
-    unsigned int num_negative_pics;
-    int num_delta_pocs;
-    int rps_idx_num_delta_pocs;
-    int32_t delta_poc[32];
-    uint8_t used[32];
-} ShortTermRPS;
-
 typedef struct LongTermRPS {
     int     poc[32];
     uint8_t used[32];
@@ -235,9 +224,9 @@ typedef struct LongTermRPS {
 } LongTermRPS;
 
 typedef struct RefPicList {
-    struct HEVCFrame *ref[MAX_REFS];
-    int list[MAX_REFS];
-    int isLongTerm[MAX_REFS];
+    struct HEVCFrame *ref[HEVC_MAX_REFS];
+    int list[HEVC_MAX_REFS];
+    int isLongTerm[HEVC_MAX_REFS];
     int nb_refs;
 } RefPicList;
 
@@ -245,259 +234,6 @@ typedef struct RefPicListTab {
     RefPicList refPicList[2];
 } RefPicListTab;
 
-typedef struct HEVCWindow {
-    unsigned int left_offset;
-    unsigned int right_offset;
-    unsigned int top_offset;
-    unsigned int bottom_offset;
-} HEVCWindow;
-
-typedef struct VUI {
-    AVRational sar;
-
-    int overscan_info_present_flag;
-    int overscan_appropriate_flag;
-
-    int video_signal_type_present_flag;
-    int video_format;
-    int video_full_range_flag;
-    int colour_description_present_flag;
-    uint8_t colour_primaries;
-    uint8_t transfer_characteristic;
-    uint8_t matrix_coeffs;
-
-    int chroma_loc_info_present_flag;
-    int chroma_sample_loc_type_top_field;
-    int chroma_sample_loc_type_bottom_field;
-    int neutra_chroma_indication_flag;
-
-    int field_seq_flag;
-    int frame_field_info_present_flag;
-
-    int default_display_window_flag;
-    HEVCWindow def_disp_win;
-
-    int vui_timing_info_present_flag;
-    uint32_t vui_num_units_in_tick;
-    uint32_t vui_time_scale;
-    int vui_poc_proportional_to_timing_flag;
-    int vui_num_ticks_poc_diff_one_minus1;
-    int vui_hrd_parameters_present_flag;
-
-    int bitstream_restriction_flag;
-    int tiles_fixed_structure_flag;
-    int motion_vectors_over_pic_boundaries_flag;
-    int restricted_ref_pic_lists_flag;
-    int min_spatial_segmentation_idc;
-    int max_bytes_per_pic_denom;
-    int max_bits_per_min_cu_denom;
-    int log2_max_mv_length_horizontal;
-    int log2_max_mv_length_vertical;
-} VUI;
-
-typedef struct PTLCommon {
-    uint8_t profile_space;
-    uint8_t tier_flag;
-    uint8_t profile_idc;
-    uint8_t profile_compatibility_flag[32];
-    uint8_t level_idc;
-    uint8_t progressive_source_flag;
-    uint8_t interlaced_source_flag;
-    uint8_t non_packed_constraint_flag;
-    uint8_t frame_only_constraint_flag;
-} PTLCommon;
-
-typedef struct PTL {
-    PTLCommon general_ptl;
-    PTLCommon sub_layer_ptl[HEVC_MAX_SUB_LAYERS];
-
-    uint8_t sub_layer_profile_present_flag[HEVC_MAX_SUB_LAYERS];
-    uint8_t sub_layer_level_present_flag[HEVC_MAX_SUB_LAYERS];
-} PTL;
-
-typedef struct HEVCVPS {
-    uint8_t vps_temporal_id_nesting_flag;
-    int vps_max_layers;
-    int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
-
-    PTL ptl;
-    int vps_sub_layer_ordering_info_present_flag;
-    unsigned int vps_max_dec_pic_buffering[HEVC_MAX_SUB_LAYERS];
-    unsigned int vps_num_reorder_pics[HEVC_MAX_SUB_LAYERS];
-    unsigned int vps_max_latency_increase[HEVC_MAX_SUB_LAYERS];
-    int vps_max_layer_id;
-    int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
-    uint8_t vps_timing_info_present_flag;
-    uint32_t vps_num_units_in_tick;
-    uint32_t vps_time_scale;
-    uint8_t vps_poc_proportional_to_timing_flag;
-    int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
-    int vps_num_hrd_parameters;
-} HEVCVPS;
-
-typedef struct ScalingList {
-    /* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
-     * and size ID 3 only has 2 arrays, not 6. */
-    uint8_t sl[4][6][64];
-    uint8_t sl_dc[2][6];
-} ScalingList;
-
-typedef struct HEVCSPS {
-    int vps_id;
-    int chroma_format_idc;
-    uint8_t separate_colour_plane_flag;
-
-    ///< output (i.e. cropped) values
-    int output_width, output_height;
-    HEVCWindow output_window;
-
-    HEVCWindow pic_conf_win;
-
-    int bit_depth;
-    int pixel_shift;
-    enum AVPixelFormat pix_fmt;
-
-    unsigned int log2_max_poc_lsb;
-    int pcm_enabled_flag;
-
-    int max_sub_layers;
-    struct {
-        int max_dec_pic_buffering;
-        int num_reorder_pics;
-        int max_latency_increase;
-    } temporal_layer[HEVC_MAX_SUB_LAYERS];
-
-    VUI vui;
-    PTL ptl;
-
-    uint8_t scaling_list_enable_flag;
-    ScalingList scaling_list;
-
-    unsigned int nb_st_rps;
-    ShortTermRPS st_rps[HEVC_MAX_SHORT_TERM_RPS_COUNT];
-
-    uint8_t amp_enabled_flag;
-    uint8_t sao_enabled;
-
-    uint8_t long_term_ref_pics_present_flag;
-    uint16_t lt_ref_pic_poc_lsb_sps[32];
-    uint8_t used_by_curr_pic_lt_sps_flag[32];
-    uint8_t num_long_term_ref_pics_sps;
-
-    struct {
-        uint8_t bit_depth;
-        uint8_t bit_depth_chroma;
-        unsigned int log2_min_pcm_cb_size;
-        unsigned int log2_max_pcm_cb_size;
-        uint8_t loop_filter_disable_flag;
-    } pcm;
-    uint8_t sps_temporal_mvp_enabled_flag;
-    uint8_t sps_strong_intra_smoothing_enable_flag;
-
-    unsigned int log2_min_cb_size;
-    unsigned int log2_diff_max_min_coding_block_size;
-    unsigned int log2_min_tb_size;
-    unsigned int log2_max_trafo_size;
-    unsigned int log2_ctb_size;
-    unsigned int log2_min_pu_size;
-
-    int max_transform_hierarchy_depth_inter;
-    int max_transform_hierarchy_depth_intra;
-
-    ///< coded frame dimension in various units
-    int width;
-    int height;
-    int ctb_width;
-    int ctb_height;
-    int ctb_size;
-    int min_cb_width;
-    int min_cb_height;
-    int min_tb_width;
-    int min_tb_height;
-    int min_pu_width;
-    int min_pu_height;
-
-    int hshift[3];
-    int vshift[3];
-
-    int qp_bd_offset;
-} HEVCSPS;
-
-typedef struct HEVCPPS {
-    unsigned int sps_id; ///< seq_parameter_set_id
-
-    uint8_t sign_data_hiding_flag;
-
-    uint8_t cabac_init_present_flag;
-
-    int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
-    int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
-    int pic_init_qp_minus26;
-
-    uint8_t constrained_intra_pred_flag;
-    uint8_t transform_skip_enabled_flag;
-
-    uint8_t cu_qp_delta_enabled_flag;
-    int diff_cu_qp_delta_depth;
-
-    int cb_qp_offset;
-    int cr_qp_offset;
-    uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
-    uint8_t weighted_pred_flag;
-    uint8_t weighted_bipred_flag;
-    uint8_t output_flag_present_flag;
-    uint8_t transquant_bypass_enable_flag;
-
-    uint8_t dependent_slice_segments_enabled_flag;
-    uint8_t tiles_enabled_flag;
-    uint8_t entropy_coding_sync_enabled_flag;
-
-    int num_tile_columns;   ///< num_tile_columns_minus1 + 1
-    int num_tile_rows;      ///< num_tile_rows_minus1 + 1
-    uint8_t uniform_spacing_flag;
-    uint8_t loop_filter_across_tiles_enabled_flag;
-
-    uint8_t seq_loop_filter_across_slices_enabled_flag;
-
-    uint8_t deblocking_filter_control_present_flag;
-    uint8_t deblocking_filter_override_enabled_flag;
-    uint8_t disable_dbf;
-    int beta_offset;    ///< beta_offset_div2 * 2
-    int tc_offset;      ///< tc_offset_div2 * 2
-
-    uint8_t scaling_list_data_present_flag;
-    ScalingList scaling_list;
-
-    uint8_t lists_modification_present_flag;
-    int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
-    int num_extra_slice_header_bits;
-    uint8_t slice_header_extension_present_flag;
-
-    // Inferred parameters
-    unsigned int *column_width;  ///< ColumnWidth
-    unsigned int *row_height;    ///< RowHeight
-    unsigned int *col_bd;        ///< ColBd
-    unsigned int *row_bd;        ///< RowBd
-    int *col_idxX;
-
-    int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
-    int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
-    int *tile_id;           ///< TileId
-    int *tile_pos_rs;       ///< TilePosRS
-    int *min_tb_addr_zs;    ///< MinTbAddrZS
-} HEVCPPS;
-
-typedef struct HEVCParamSets {
-    AVBufferRef *vps_list[HEVC_MAX_VPS_COUNT];
-    AVBufferRef *sps_list[HEVC_MAX_SPS_COUNT];
-    AVBufferRef *pps_list[HEVC_MAX_PPS_COUNT];
-
-    /* currently active parameter sets */
-    const HEVCVPS *vps;
-    const HEVCSPS *sps;
-    const HEVCPPS *pps;
-} HEVCParamSets;
-
 typedef struct SliceHeader {
     unsigned int pps_id;
 
@@ -819,27 +555,6 @@ typedef struct HEVCContext {
     int sei_hflip, sei_vflip;
 } HEVCContext;
 
-int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
-                                  ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header);
-
-/**
- * Parse the SPS from the bitstream into the provided HEVCSPS struct.
- *
- * @param sps_id the SPS id will be written here
- * @param apply_defdispwin if set 1, the default display window from the VUI
- *                         will be applied to the video dimensions
- * @param vps_list if non-NULL, this function will validate that the SPS refers
- *                 to an existing VPS
- */
-int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
-                      int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx);
-
-int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,
-                           HEVCParamSets *ps);
-int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx,
-                           HEVCParamSets *ps, int apply_defdispwin);
-int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
-                           HEVCParamSets *ps);
 int ff_hevc_decode_nal_sei(HEVCContext *s);
 
 /**
@@ -959,9 +674,6 @@ void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size);
 
 void ff_hevc_pred_init(HEVCPredContext *hpc, int bit_depth);
 
-int ff_hevc_encode_nal_vps(HEVCVPS *vps, unsigned int id,
-                           uint8_t *buf, int buf_size);
-
 extern const uint8_t ff_hevc_qpel_extra_before[4];
 extern const uint8_t ff_hevc_qpel_extra_after[4];
 extern const uint8_t ff_hevc_qpel_extra[4];