hevcmerge.c File Reference

#include <gpac/bitstream.h>
#include <gpac/filters.h>
#include <gpac/avparse.h>
#include <gpac/constants.h>
#include <gpac/internal/media_dev.h>
#include <math.h>

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Data Structures
struct	HEVCTilePidCtx
struct	HEVCGridInfo
struct	GF_HEVCMergeCtx

Macros
#define	CHECK_SPS_VAL(__name)
#define	CHECK_PPS_VAL(__name)
#define	OFFS(_n)   #_n, offsetof(GF_HEVCMergeCtx, _n)

Functions
void	hevc_rewrite_sps (char *in_SPS, u32 in_SPS_length, u32 width, u32 height, char **out_SPS, u32 *out_SPS_length)
static void	hevcmerge_rewrite_pps (GF_HEVCMergeCtx *ctx, char *in_PPS, u32 in_PPS_length, char **out_PPS, u32 *out_PPS_length)
u32	hevcmerge_rewrite_slice (GF_HEVCMergeCtx *ctx, HEVCTilePidCtx *tile_pid, char *in_slice, u32 in_slice_length)
static GF_Err	hevcmerge_rewrite_config (GF_HEVCMergeCtx *ctx, GF_FilterPid *opid, char *data, u32 size)
static void	hevcmerge_write_nal (GF_HEVCMergeCtx *ctx, char *output_nal, char *rewritten_nal, u32 out_nal_size)
static u32	hevcmerge_compute_address (GF_HEVCMergeCtx *ctx, HEVCTilePidCtx *tile_pid, Bool use_y_coord)
void	hevcmerge_build_srdmap (GF_HEVCMergeCtx *ctx, Bool use_abs_pos)
static GF_Err	hevcmerge_rebuild_grid (GF_HEVCMergeCtx *ctx, GF_FilterPid *pid)
static GF_Err	hevcmerge_check_sps_pps (GF_HEVCMergeCtx *ctx, HEVCTilePidCtx *pid_base, HEVCTilePidCtx *pid_o)
static GF_Err	hevcmerge_configure_pid (GF_Filter *filter, GF_FilterPid *pid, Bool is_remove)
static GF_Err	hevcmerge_process (GF_Filter *filter)
static Bool	hevcmerge_process_event (GF_Filter *filter, const GF_FilterEvent *evt)
static GF_Err	hevcmerge_initialize (GF_Filter *filter)
static void	hevcmerge_finalize (GF_Filter *filter)
const GF_FilterRegister *	hevcmerge_register (GF_FilterSession *session)

Variables
static const GF_FilterCapability	HEVCMergeCaps []
static const GF_FilterArgs	HEVCMergeArgs []
GF_FilterRegister	HEVCMergeRegister

---

Data Structure Documentation

HEVCTilePidCtx

struct HEVCTilePidCtx

Collaboration diagram for HEVCTilePidCtx:

Data Fields
GF_FilterPid *	pid
u32	slice_segment_address
u32	width
u32	height
Bool	in_error
u32	nalu_size_length
u32	dsi_crc
HEVCState	hevc_state
u32	pos_row
u32	pos_col
u32	timescale
u32	nb_pck
Bool	has_pos
s32	pos_x
s32	pos_y

HEVCGridInfo

struct HEVCGridInfo

Data Fields
u32	width
u32	height
u32	row_pos
u32	max_row_pos
u32	last_row_idx
u32	pos_x

GF_HEVCMergeCtx

struct GF_HEVCMergeCtx

Collaboration diagram for GF_HEVCMergeCtx:

Data Fields
Bool	strict
Bool	mrows
GF_FilterPid *	opid
s32	base_pps_init_qp_delta_minus26
u32	nb_bits_per_address_dst
u32	out_width
u32	out_height
u8 *	buffer_nal
u8 *	buffer_nal_no_epb
u8 *	buffer_nal_in_no_epb
u32	buffer_nal_alloc
u32	buffer_nal_no_epb_alloc
u32	buffer_nal_in_no_epb_alloc
GF_BitStream *	bs_au_in
GF_BitStream *	bs_nal_in
GF_BitStream *	bs_nal_out
HEVCGridInfo *	grid
u32	nb_cols
u8 *	sei_suffix_buf
u32	sei_suffix_len
u32	sei_suffix_alloc
u32	hevc_nalu_size_length
u32	max_CU_width
u32	max_CU_height
GF_List *	pids
GF_List *	ordered_pids
Bool	in_error
Bool	enable_multi_rows
u32	nb_rows
u32	merge_set_id
Bool	is_playing
GF_FEVT_Play	play_evt

Macro Definition Documentation

CHECK_SPS_VAL

#define CHECK_SPS_VAL

(

__name

)

Value:

                        if (sps_base->__name != sps_o->__name ) { \
                                GF_LOG(GF_LOG_WARNING, GF_LOG_MEDIA, ("[HEVCMerge] "#__name" differs in SPS between %s and %s, undefined results\n", src_base, src_o));\
                                all_ok = GF_FALSE;\
                        }\

CHECK_PPS_VAL

#define CHECK_PPS_VAL

(

__name

)

Value:

                        if (pps_base->__name != pps_o->__name ) { \
                                GF_LOG(GF_LOG_WARNING, GF_LOG_MEDIA, ("[HEVCMerge] "#__name" differs in PPS, undefined results\n"));\
                                all_ok = GF_FALSE;\
                        }\

OFFS

#define OFFS

(

_n

)

#_n, offsetof(GF_HEVCMergeCtx, _n)

Function Documentation

hevc_rewrite_sps()

void hevc_rewrite_sps	(	char *	in_SPS,
		u32	in_SPS_length,
		u32	width,
		u32	height,
		char **	out_SPS,
		u32 *	out_SPS_length
	)

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hevcmerge_rewrite_pps()

static void hevcmerge_rewrite_pps ( GF_HEVCMergeCtx *  ctx, char *  in_PPS, u32  in_PPS_length, char **  out_PPS, u32 *  out_PPS_length  )

static

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hevcmerge_rewrite_slice()

u32 hevcmerge_rewrite_slice	(	GF_HEVCMergeCtx *	ctx,
		HEVCTilePidCtx *	tile_pid,
		char *	in_slice,
		u32	in_slice_length
	)

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hevcmerge_rewrite_config()

static GF_Err hevcmerge_rewrite_config ( GF_HEVCMergeCtx *  ctx, GF_FilterPid *  opid, char *  data, u32  size  )

static

used for storing AVC sequenceParameterSetNALUnit and pictureParameterSetNALUnit

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hevcmerge_write_nal()

static void hevcmerge_write_nal ( GF_HEVCMergeCtx *  ctx, char *  output_nal, char *  rewritten_nal, u32  out_nal_size  )

static

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hevcmerge_compute_address()

static u32 hevcmerge_compute_address ( GF_HEVCMergeCtx *  ctx, HEVCTilePidCtx *  tile_pid, Bool  use_y_coord  )

static

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hevcmerge_build_srdmap()

void hevcmerge_build_srdmap	(	GF_HEVCMergeCtx *	ctx,
		Bool	use_abs_pos
	)

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hevcmerge_rebuild_grid()

static GF_Err hevcmerge_rebuild_grid ( GF_HEVCMergeCtx *  ctx, GF_FilterPid *  pid  )

static

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hevcmerge_check_sps_pps()

static GF_Err hevcmerge_check_sps_pps ( GF_HEVCMergeCtx *  ctx, HEVCTilePidCtx *  pid_base, HEVCTilePidCtx *  pid_o  )

static

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hevcmerge_configure_pid()

static GF_Err hevcmerge_configure_pid ( GF_Filter *  filter, GF_FilterPid *  pid, Bool  is_remove  )

static

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hevcmerge_process()

static GF_Err hevcmerge_process ( GF_Filter *  filter )

static

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hevcmerge_process_event()

static Bool hevcmerge_process_event ( GF_Filter *  filter, const GF_FilterEvent *  evt  )

static

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hevcmerge_initialize()

static GF_Err hevcmerge_initialize ( GF_Filter *  filter )

static

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hevcmerge_finalize()

static void hevcmerge_finalize ( GF_Filter *  filter )

static

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hevcmerge_register()

const GF_FilterRegister * hevcmerge_register

(

GF_FilterSession *

session

)

Variable Documentation

HEVCMergeCaps

const GF_FilterCapability HEVCMergeCaps[]

static

Initial value:

=
{
        CAP_UINT(GF_CAPS_INPUT,GF_PROP_PID_STREAM_TYPE, GF_STREAM_VISUAL),
        CAP_UINT(GF_CAPS_INPUT,GF_PROP_PID_CODECID, GF_CODECID_HEVC),
        CAP_UINT(GF_CAPS_INPUT,GF_PROP_PID_CODECID, GF_CODECID_HEVC_MERGE),
        CAP_BOOL(GF_CAPS_INPUT_EXCLUDED, GF_PROP_PID_UNFRAMED, GF_TRUE),
        CAP_UINT(GF_CAPS_OUTPUT, GF_PROP_PID_STREAM_TYPE, GF_STREAM_VISUAL),
 
}

HEVCMergeArgs

const GF_FilterArgs HEVCMergeArgs[]

static

Initial value:

=
{
        { OFFS(strict), "strict comparison of SPS and PPS of input PIDs", GF_PROP_BOOL, "false", NULL, GF_FS_ARG_HINT_ADVANCED},
        { OFFS(mrows), "signal multiple rows in tile grid when possible", GF_PROP_BOOL, "false", NULL, GF_FS_ARG_HINT_ADVANCED},
        {0}
}

HEVCMergeRegister

GF_FilterRegister HEVCMergeRegister