ps.c File Reference

#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "golomb.h"
#include "h2645_vui.h"
#include "data.h"
#include "ps.h"
#include "profiles.h"
#include "refstruct.h"

Go to the source code of this file.

Macros
#define	check_profile_idc(idc)   ptl->profile_idc == idc || ptl->profile_compatibility_flag[idc]
#define	CHECK_QP_OFFSET(name)

Enumerations
enum	ScalabilityMask {   HEVC_SCALABILITY_DEPTH = 0, HEVC_SCALABILITY_MULTIVIEW = 1, HEVC_SCALABILITY_SPATIAL = 2, HEVC_SCALABILITY_AUXILIARY = 3,   HEVC_SCALABILITY_MASK_MAX = 15 }
enum	DependencyType { HEVC_DEP_TYPE_SAMPLE = 0, HEVC_DEP_TYPE_MV = 1, HEVC_DEP_TYPE_BOTH = 2 }

Functions
static void	remove_sps (HEVCParamSets *s, int id)
static void	remove_vps (HEVCParamSets *s, int id)
int	ff_hevc_decode_short_term_rps (GetBitContext *gb, AVCodecContext *avctx, ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header)
static int	decode_profile_tier_level (GetBitContext *gb, AVCodecContext *avctx, PTLCommon *ptl)
static int	parse_ptl (GetBitContext *gb, AVCodecContext *avctx, int profile_present, PTL *ptl, int max_num_sub_layers)
static void	decode_sublayer_hrd (GetBitContext *gb, unsigned int nb_cpb, HEVCSublayerHdrParams *par, int subpic_params_present)
static int	decode_hrd (GetBitContext *gb, int common_inf_present, HEVCHdrParams *hdr, int max_sublayers)
static void	hevc_vps_free (FFRefStructOpaque opaque, void *obj)
static int	decode_vps_ext (GetBitContext *gb, AVCodecContext *avctx, HEVCVPS *vps, uint64_t layer1_id_included)
int	ff_hevc_decode_nal_vps (GetBitContext *gb, AVCodecContext *avctx, HEVCParamSets *ps)
static void	decode_vui (GetBitContext *gb, AVCodecContext *avctx, int apply_defdispwin, HEVCSPS *sps)
static void	set_default_scaling_list_data (ScalingList *sl)
static int	scaling_list_data (GetBitContext *gb, AVCodecContext *avctx, ScalingList *sl, const HEVCSPS *sps)
static int	map_pixel_format (AVCodecContext *avctx, HEVCSPS *sps)
int	ff_hevc_parse_sps (HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id, unsigned nuh_layer_id, int apply_defdispwin, const HEVCVPS *const *vps_list, AVCodecContext *avctx)
	Parse the SPS from the bitstream into the provided HEVCSPS struct. More...
static void	hevc_sps_free (FFRefStructOpaque opaque, void *obj)
static int	compare_sps (const HEVCSPS *sps1, const HEVCSPS *sps2)
int	ff_hevc_decode_nal_sps (GetBitContext *gb, AVCodecContext *avctx, HEVCParamSets *ps, unsigned nuh_layer_id, int apply_defdispwin)
static void	hevc_pps_free (FFRefStructOpaque unused, void *obj)
static void	colour_mapping_octants (GetBitContext *gb, HEVCPPS *pps, int inp_depth, int idx_y, int idx_cb, int idx_cr, int inp_length)
static int	colour_mapping_table (GetBitContext *gb, AVCodecContext *avctx, HEVCPPS *pps)
static int	pps_multilayer_extension (GetBitContext *gb, AVCodecContext *avctx, HEVCPPS *pps, const HEVCSPS *sps, const HEVCVPS *vps)
static void	delta_dlt (GetBitContext *gb, HEVCPPS *pps)
static int	pps_3d_extension (GetBitContext *gb, AVCodecContext *avctx, HEVCPPS *pps, const HEVCSPS *sps)
static int	pps_range_extensions (GetBitContext *gb, AVCodecContext *avctx, HEVCPPS *pps, const HEVCSPS *sps)
static int	pps_scc_extension (GetBitContext *gb, AVCodecContext *avctx, HEVCPPS *pps, const HEVCSPS *sps)
static int	setup_pps (AVCodecContext *avctx, GetBitContext *gb, HEVCPPS *pps, const HEVCSPS *sps)
int	ff_hevc_decode_nal_pps (GetBitContext *gb, AVCodecContext *avctx, HEVCParamSets *ps)
void	ff_hevc_ps_uninit (HEVCParamSets *ps)
int	ff_hevc_compute_poc (const HEVCSPS *sps, int pocTid0, int poc_lsb, int nal_unit_type)
	Compute POC of the current frame and return it. More...

Variables
static const uint8_t	default_scaling_list_intra []
static const uint8_t	default_scaling_list_inter []
static const uint8_t	hevc_sub_width_c []
static const uint8_t	hevc_sub_height_c []

Macro Definition Documentation

check_profile_idc

#define check_profile_idc

(

idc

)

ptl->profile_idc == idc || ptl->profile_compatibility_flag[idc]

CHECK_QP_OFFSET

#define CHECK_QP_OFFSET

(

name

)

Value:

                               (pps->pps_act_ ## name ## _qp_offset <= -12 || \
                               pps->pps_act_ ## name ## _qp_offset >= 12)

Enumeration Type Documentation

ScalabilityMask

enum ScalabilityMask

Enumerator
HEVC_SCALABILITY_DEPTH
HEVC_SCALABILITY_MULTIVIEW
HEVC_SCALABILITY_SPATIAL
HEVC_SCALABILITY_AUXILIARY
HEVC_SCALABILITY_MASK_MAX

Definition at line 453 of file ps.c.

DependencyType

enum DependencyType

Enumerator
HEVC_DEP_TYPE_SAMPLE
HEVC_DEP_TYPE_MV
HEVC_DEP_TYPE_BOTH

Definition at line 461 of file ps.c.

Function Documentation

remove_sps()

static void remove_sps ( HEVCParamSets *  s, int  id  )

static

Definition at line 65 of file ps.c.

Referenced by ff_hevc_decode_nal_sps(), and remove_vps().

remove_vps()

static void remove_vps ( HEVCParamSets *  s, int  id  )

static

Definition at line 78 of file ps.c.

Referenced by ff_hevc_decode_nal_vps().

ff_hevc_decode_short_term_rps()

int ff_hevc_decode_short_term_rps	(	GetBitContext *	gb,
		AVCodecContext *	avctx,
		ShortTermRPS *	rps,
		const HEVCSPS *	sps,
		int	is_slice_header
	)

Definition at line 89 of file ps.c.

Referenced by ff_hevc_parse_sps(), and hls_slice_header().

decode_profile_tier_level()

static int decode_profile_tier_level ( GetBitContext *  gb, AVCodecContext *  avctx, PTLCommon *  ptl  )

static

Definition at line 238 of file ps.c.

Referenced by parse_ptl().

parse_ptl()

static int parse_ptl ( GetBitContext *  gb, AVCodecContext *  avctx, int  profile_present, PTL *  ptl, int  max_num_sub_layers  )

static

Definition at line 313 of file ps.c.

Referenced by decode_vps_ext(), ff_hevc_decode_nal_vps(), and ff_hevc_parse_sps().

decode_sublayer_hrd()

static void decode_sublayer_hrd ( GetBitContext *  gb, unsigned int  nb_cpb, HEVCSublayerHdrParams *  par, int  subpic_params_present  )

static

Definition at line 359 of file ps.c.

Referenced by decode_hrd().

decode_hrd()

static int decode_hrd ( GetBitContext *  gb, int  common_inf_present, HEVCHdrParams *  hdr, int  max_sublayers  )

static

Definition at line 377 of file ps.c.

Referenced by decode_vui(), and ff_hevc_decode_nal_vps().

hevc_vps_free()

static void hevc_vps_free ( FFRefStructOpaque  opaque, void *  obj  )

static

Definition at line 445 of file ps.c.

Referenced by ff_hevc_decode_nal_vps().

decode_vps_ext()

static int decode_vps_ext ( GetBitContext *  gb, AVCodecContext *  avctx, HEVCVPS *  vps, uint64_t  layer1_id_included  )

static

For stereoscopic MV-HEVC, the following simplifying assumptions are made:

• vps_max_layers = 2 (one base layer, one multiview layer)
• vps_num_layer_sets = 2 (one output layer set for each view)
• NumScalabilityTypes = 1 (only HEVC_SCALABILITY_MULTIVIEW)
• direct_dependency_flag[1][0] = 1 (second layer depends on first)
• num_add_olss = 0 (no extra output layer sets)
• default_output_layer_idc = 0 (1:1 mapping between OLSs and layers)
• layer_id_included_flag[1] = {1, 1} (consequence of layer dependencies)
• vps_num_rep_formats_minus1 = 0 (all layers have the same size)

Which results in the following derived variables:

• ViewOrderIdx = {0, 1}
• NumViews = 2
• DependencyFlag[1][0] = 1
• NumDirectRefLayers = {0, 1}
• NumRefLayers = {0, 1}
• NumPredictedLayers = {1, 0}
• NumIndependentLayers = 1
• NumLayersInTreePartition = {2}
• NumLayerSets = 2
• NumOutputLayerSets = 2
• OlsIdxToLsIdx = {0, 1}
• LayerIdxInVps = {0, 1}
• NumLayersInIdList = {1, 2}
• NumNecessaryLayers = {1, 2}
• NecessaryLayerFlag = {{1, 0}, {1, 1}}
• NumOutputLayersInOutputLayerSet = {1, 2}
• OutputLayerFlag = {{1, 0}, {1, 1}}

Definition at line 467 of file ps.c.

Referenced by ff_hevc_decode_nal_vps().

ff_hevc_decode_nal_vps()

int ff_hevc_decode_nal_vps	(	GetBitContext *	gb,
		AVCodecContext *	avctx,
		HEVCParamSets *	ps
	)

Definition at line 716 of file ps.c.

Referenced by decode_nal_unit(), hevc_decode_nal_units(), and parse_nal_units().

decode_vui()

static void decode_vui ( GetBitContext *  gb, AVCodecContext *  avctx, int  apply_defdispwin, HEVCSPS *  sps  )

static

Definition at line 871 of file ps.c.

Referenced by ff_hevc_parse_sps().

set_default_scaling_list_data()

static void set_default_scaling_list_data ( ScalingList *  sl )

static

Definition at line 998 of file ps.c.

Referenced by ff_hevc_decode_nal_pps(), and ff_hevc_parse_sps().

scaling_list_data()

static int scaling_list_data ( GetBitContext *  gb, AVCodecContext *  avctx, ScalingList *  sl, const HEVCSPS *  sps  )

static

Definition at line 1028 of file ps.c.

Referenced by ff_hevc_decode_nal_pps(), and ff_hevc_parse_sps().

map_pixel_format()

static int map_pixel_format ( AVCodecContext *  avctx, HEVCSPS *  sps  )

static

Definition at line 1105 of file ps.c.

Referenced by ff_hevc_parse_sps().

ff_hevc_parse_sps()

int ff_hevc_parse_sps	(	HEVCSPS *	sps,
		GetBitContext *	gb,
		unsigned int *	sps_id,
		unsigned	nuh_layer_id,
		int	apply_defdispwin,
		const HEVCVPS *const *	vps_list,
		AVCodecContext *	avctx
	)

Parse the SPS from the bitstream into the provided HEVCSPS struct.

Parameters

sps_id	the SPS id will be written here
apply_defdispwin	if set 1, the default display window from the VUI will be applied to the video dimensions
vps_list	if non-NULL, this function will validate that the SPS refers to an existing VPS

Definition at line 1154 of file ps.c.

Referenced by ff_hevc_decode_nal_sps(), and generate_fake_vps().

hevc_sps_free()

static void hevc_sps_free ( FFRefStructOpaque  opaque, void *  obj  )

static

Definition at line 1635 of file ps.c.

Referenced by ff_hevc_decode_nal_sps().

compare_sps()

static int compare_sps ( const HEVCSPS *  sps1, const HEVCSPS *  sps2  )

static

Definition at line 1644 of file ps.c.

Referenced by ff_hevc_decode_nal_sps().

ff_hevc_decode_nal_sps()

int ff_hevc_decode_nal_sps	(	GetBitContext *	gb,
		AVCodecContext *	avctx,
		HEVCParamSets *	ps,
		unsigned	nuh_layer_id,
		int	apply_defdispwin
	)

Definition at line 1650 of file ps.c.

Referenced by decode_nal_unit(), hevc_decode_nal_units(), and parse_nal_units().

hevc_pps_free()

static void hevc_pps_free ( FFRefStructOpaque  unused, void *  obj  )

static

Definition at line 1703 of file ps.c.

Referenced by ff_hevc_decode_nal_pps().

colour_mapping_octants()

static void colour_mapping_octants ( GetBitContext *  gb, HEVCPPS *  pps, int  inp_depth, int  idx_y, int  idx_cb, int  idx_cr, int  inp_length  )

static

Definition at line 1722 of file ps.c.

Referenced by colour_mapping_table().

colour_mapping_table()

static int colour_mapping_table ( GetBitContext *  gb, AVCodecContext *  avctx, HEVCPPS *  pps  )

static

Definition at line 1759 of file ps.c.

Referenced by pps_multilayer_extension().

pps_multilayer_extension()

static int pps_multilayer_extension ( GetBitContext *  gb, AVCodecContext *  avctx, HEVCPPS *  pps, const HEVCSPS *  sps, const HEVCVPS *  vps  )

static

Definition at line 1791 of file ps.c.

Referenced by ff_hevc_decode_nal_pps().

delta_dlt()

static void delta_dlt ( GetBitContext *  gb, HEVCPPS *  pps  )

static

Definition at line 1840 of file ps.c.

Referenced by pps_3d_extension().

pps_3d_extension()

static int pps_3d_extension ( GetBitContext *  gb, AVCodecContext *  avctx, HEVCPPS *  pps, const HEVCSPS *  sps  )

static

Definition at line 1862 of file ps.c.

Referenced by ff_hevc_decode_nal_pps().

pps_range_extensions()

static int pps_range_extensions ( GetBitContext *  gb, AVCodecContext *  avctx, HEVCPPS *  pps, const HEVCSPS *  sps  )

static

Definition at line 1886 of file ps.c.

Referenced by ff_hevc_decode_nal_pps().

pps_scc_extension()

static int pps_scc_extension ( GetBitContext *  gb, AVCodecContext *  avctx, HEVCPPS *  pps, const HEVCSPS *  sps  )

static

Definition at line 1926 of file ps.c.

Referenced by ff_hevc_decode_nal_pps().

setup_pps()

static int setup_pps ( AVCodecContext *  avctx, GetBitContext *  gb, HEVCPPS *  pps, const HEVCSPS *  sps  )

inlinestatic

6.5

Definition at line 1980 of file ps.c.

Referenced by ff_hevc_decode_nal_pps().

ff_hevc_decode_nal_pps()

int ff_hevc_decode_nal_pps	(	GetBitContext *	gb,
		AVCodecContext *	avctx,
		HEVCParamSets *	ps
	)

Definition at line 2112 of file ps.c.

Referenced by decode_nal_unit(), hevc_decode_nal_units(), and parse_nal_units().

ff_hevc_ps_uninit()

void ff_hevc_ps_uninit

(

HEVCParamSets *

ps

)

Definition at line 2384 of file ps.c.

Referenced by hevc_decode_free(), and hevc_parser_close().

ff_hevc_compute_poc()

int ff_hevc_compute_poc	(	const HEVCSPS *	sps,
		int	pocTid0,
		int	poc_lsb,
		int	nal_unit_type
	)

Compute POC of the current frame and return it.

Definition at line 2396 of file ps.c.

Referenced by hevc_parse_slice_header(), and hls_slice_header().

Variable Documentation

default_scaling_list_intra

const uint8_t default_scaling_list_intra[]

static

Initial value:

= {
    16, 16, 16, 16, 17, 18, 21, 24,
    16, 16, 16, 16, 17, 19, 22, 25,
    16, 16, 17, 18, 20, 22, 25, 29,
    16, 16, 18, 21, 24, 27, 31, 36,
    17, 17, 20, 24, 30, 35, 41, 47,
    18, 19, 22, 27, 35, 44, 54, 65,
    21, 22, 25, 31, 41, 54, 70, 88,
    24, 25, 29, 36, 47, 65, 88, 115
}

Definition at line 35 of file ps.c.

Referenced by set_default_scaling_list_data().

default_scaling_list_inter

const uint8_t default_scaling_list_inter[]

static

Initial value:

= {
    16, 16, 16, 16, 17, 18, 20, 24,
    16, 16, 16, 17, 18, 20, 24, 25,
    16, 16, 17, 18, 20, 24, 25, 28,
    16, 17, 18, 20, 24, 25, 28, 33,
    17, 18, 20, 24, 25, 28, 33, 41,
    18, 20, 24, 25, 28, 33, 41, 54,
    20, 24, 25, 28, 33, 41, 54, 71,
    24, 25, 28, 33, 41, 54, 71, 91
}

Definition at line 46 of file ps.c.

Referenced by set_default_scaling_list_data().

hevc_sub_width_c

const uint8_t hevc_sub_width_c[]

static

Initial value:

= {
    1, 2, 2, 1
}

Definition at line 57 of file ps.c.

Referenced by decode_vps_ext(), decode_vui(), and ff_hevc_parse_sps().

hevc_sub_height_c

const uint8_t hevc_sub_height_c[]

static

Initial value:

= {
    1, 2, 1, 1
}

Definition at line 61 of file ps.c.

Referenced by decode_vps_ext(), decode_vui(), and ff_hevc_parse_sps().