hevcsplit.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>

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Data Structures
struct	HEVCTilePid
struct	GF_HEVCSplitCtx

Macros
#define	OFFS(_n)   #_n, offsetof(GF_HEVCSplitCtx, _n)

Functions
static u32	hevcsplit_get_slice_tile_index (HEVCState *hevc)
static void	hevcsplit_get_tile_pixel_coords (HEVCState *hevc, u32 index_row, u32 index_col, u32 pps_id, u32 *width, u32 *height, u32 *tx, u32 *ty)
static void	hevc_write_profile_tier_level (GF_BitStream *bs_in, GF_BitStream *bs_out, Bool ProfilePresentFlag, u8 MaxNumSubLayersMinus1)
void	hevc_rewrite_sps (char *in_SPS, u32 in_SPS_length, u32 width, u32 height, char **out_SPS, u32 *out_SPS_length)
static void	hevcsplit_rewrite_pps_no_grid (GF_HEVCSplitCtx *ctx, char *in_PPS, u32 in_PPS_length, char **out_PPS, u32 *out_PPS_length)
static u32	hevcsplit_remove_slice_address (GF_HEVCSplitCtx *ctx, u8 *in_slice, u32 in_slice_length)
static char *	hevcsplit_rewrite_nal (GF_Filter *filter, GF_HEVCSplitCtx *ctx, char *in_nal, u32 in_nal_size, u32 *out_tile_index, u32 *out_nal_size)
static GF_Err	hevcsplit_rewrite_dsi (GF_HEVCSplitCtx *ctx, GF_FilterPid *opid, char *data, u32 size, u32 new_width, u32 new_height)
static void	hevcsplit_write_nal (char *output_nal, char *rewritten_nal, u32 out_nal_size, u32 hevc_nalu_size_length)
static GF_Err	hevcsplit_config_passthrough (GF_Filter *filter, GF_HEVCSplitCtx *ctx, GF_FilterPid *pid)
static GF_Err	hevcsplit_configure_pid (GF_Filter *filter, GF_FilterPid *pid, Bool is_remove)
static GF_Err	hevcsplit_process (GF_Filter *filter)
static GF_Err	hevcsplit_initialize (GF_Filter *filter)
static void	hevcsplit_finalize (GF_Filter *filter)
const GF_FilterRegister *	hevcsplit_register (GF_FilterSession *session)

Variables
static const GF_FilterCapability	HEVCSplitCaps []
static const GF_FilterArgs	HEVCSplitArgs []
GF_FilterRegister	HEVCSplitRegister

---

Data Structure Documentation

HEVCTilePid

struct HEVCTilePid

Data Fields
GF_FilterPid *	opid
u32	width
u32	height
u32	orig_x
u32	orig_y
GF_FilterPacket *	cur_pck

GF_HEVCSplitCtx

struct GF_HEVCSplitCtx

Collaboration diagram for GF_HEVCSplitCtx:

Data Fields
GF_FilterPid *	ipid
GF_List *	outputs
u32	num_tiles
u32	got_p
HEVCState	hevc_state
u32	hevc_nalu_size_length
u32	cfg_crc
u32	nb_pck
GF_BitStream *	bs_au_in
GF_BitStream *	bs_nal_in
GF_BitStream *	bs_nal_out
u8 *	buffer_nal
u32	buffer_nal_alloc
u8 *	output_no_epb
u32	output_no_epb_alloc
u8 *	input_no_epb
u32	input_no_epb_alloc
Bool	passthrough

Macro Definition Documentation

OFFS

#define OFFS

(

_n

)

#_n, offsetof(GF_HEVCSplitCtx, _n)

Function Documentation

hevcsplit_get_slice_tile_index()

static u32 hevcsplit_get_slice_tile_index ( HEVCState *  hevc )

static

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hevcsplit_get_tile_pixel_coords()

static void hevcsplit_get_tile_pixel_coords ( HEVCState *  hevc, u32  index_row, u32  index_col, u32  pps_id, u32 *  width, u32 *  height, u32 *  tx, u32 *  ty  )

static

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hevc_write_profile_tier_level()

static void hevc_write_profile_tier_level ( GF_BitStream *  bs_in, GF_BitStream *  bs_out, Bool  ProfilePresentFlag, u8  MaxNumSubLayersMinus1  )

static

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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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hevcsplit_rewrite_pps_no_grid()

static void hevcsplit_rewrite_pps_no_grid ( GF_HEVCSplitCtx *  ctx, char *  in_PPS, u32  in_PPS_length, char **  out_PPS, u32 *  out_PPS_length  )

static

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hevcsplit_remove_slice_address()

static u32 hevcsplit_remove_slice_address ( GF_HEVCSplitCtx *  ctx, u8 *  in_slice, u32  in_slice_length  )

static

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hevcsplit_rewrite_nal()

static char* hevcsplit_rewrite_nal ( GF_Filter *  filter, GF_HEVCSplitCtx *  ctx, char *  in_nal, u32  in_nal_size, u32 *  out_tile_index, u32 *  out_nal_size  )

static

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hevcsplit_rewrite_dsi()

static GF_Err hevcsplit_rewrite_dsi ( GF_HEVCSplitCtx *  ctx, GF_FilterPid *  opid, char *  data, u32  size, u32  new_width, u32  new_height  )

static

used for storing AVC sequenceParameterSetNALUnit and pictureParameterSetNALUnit

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hevcsplit_write_nal()

static void hevcsplit_write_nal ( char *  output_nal, char *  rewritten_nal, u32  out_nal_size, u32  hevc_nalu_size_length  )

static

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hevcsplit_config_passthrough()

static GF_Err hevcsplit_config_passthrough ( GF_Filter *  filter, GF_HEVCSplitCtx *  ctx, GF_FilterPid *  pid  )

static

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hevcsplit_configure_pid()

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

static

used for storing AVC sequenceParameterSetNALUnit and pictureParameterSetNALUnit

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hevcsplit_process()

static GF_Err hevcsplit_process ( GF_Filter *  filter )

static

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hevcsplit_initialize()

static GF_Err hevcsplit_initialize ( GF_Filter *  filter )

static

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hevcsplit_finalize()

static void hevcsplit_finalize ( GF_Filter *  filter )

static

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hevcsplit_register()

const GF_FilterRegister* hevcsplit_register

(

GF_FilterSession *

session

)

Variable Documentation

HEVCSplitCaps

const GF_FilterCapability HEVCSplitCaps[]

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_BOOL(GF_CAPS_INPUT_EXCLUDED, GF_PROP_PID_UNFRAMED, GF_TRUE),
        CAP_BOOL(GF_CAPS_INPUT_EXCLUDED, GF_PROP_PID_TILE_BASE, GF_TRUE),
        CAP_UINT(GF_CAPS_OUTPUT, GF_PROP_PID_STREAM_TYPE, GF_STREAM_VISUAL),
 
}

HEVCSplitArgs

const GF_FilterArgs HEVCSplitArgs[]

static

Initial value:

=
{
        {0}
}

HEVCSplitRegister

GF_FilterRegister HEVCSplitRegister

Initial value:

= {
        .name = "hevcsplit",
 
        GF_FS_SET_HELP("This filter splits a motion-constrained tiled HEVC PID into N independent HEVC PIDs.\n"
                        "Use hevcmerge filter to merge initially motion-constrained tiled HEVC PID in a single output.")
        .private_size = sizeof(GF_HEVCSplitCtx),
        SETCAPS(HEVCSplitCaps),
        
        .flags = GF_FS_REG_EXPLICIT_ONLY,
        .initialize = hevcsplit_initialize,
        .finalize = hevcsplit_finalize,
        .args = HEVCSplitArgs,
        .configure_pid = hevcsplit_configure_pid,
        .process = hevcsplit_process,
        .hint_class_type = GF_FS_CLASS_STREAM
}