dmx_nhml.c File Reference

#include <gpac/filters.h>
#include <gpac/constants.h>
#include <gpac/thread.h>
#include <gpac/list.h>
#include <gpac/bitstream.h>
#include <gpac/xml.h>
#include <gpac/network.h>
#include <gpac/isomedia.h>
#include <gpac/base_coding.h>
#include <gpac/avparse.h>
#include <zlib.h>

Include dependency graph for dmx_nhml.c:

Data Structures
struct	GF_NHMLDmxCtx
struct	XMLBreaker

Macros
#define	ZLIB_COMPRESS_SAFE   4
#define	NHML_SCAN_INT(_fmt, _value)
#define	OFFS(_n)   #_n, offsetof(GF_NHMLDmxCtx, _n)

Functions
GF_Err	nhmldmx_configure_pid (GF_Filter *filter, GF_FilterPid *pid, Bool is_remove)
static Bool	nhmldmx_process_event (GF_Filter *filter, const GF_FilterEvent *evt)
static GF_XMLNode *	nhmldmx_get_prop_ref (GF_NHMLDmxCtx *ctx, GF_XMLNode *par, char *ID)
static GF_XMLNode *	nhmldmx_get_props (GF_NHMLDmxCtx *ctx, char *ID)
static void	nhmldmx_set_props (GF_NHMLDmxCtx *ctx, GF_XMLNode *props, GF_FilterPacket *pck)
static void	nhml_node_start (void *sax_cbck, const char *node_name, const char *name_space, const GF_XMLAttribute *attributes, u32 nb_attributes)
static void	nhml_node_end (void *sax_cbck, const char *node_name, const char *name_space)
static GF_Err	nhml_sample_from_xml (GF_NHMLDmxCtx *ctx, char *xml_file, char *xmlFrom, char *xmlTo)
static GF_Err	compress_sample_data (GF_NHMLDmxCtx *ctx, u32 compress_type, char **dict, u32 offset)
static GF_Err	nhmldmx_config_output (GF_Filter *filter, GF_NHMLDmxCtx *ctx, GF_XMLNode *root)
static GF_Err	nhmldmx_init_parsing (GF_Filter *filter, GF_NHMLDmxCtx *ctx)
void	nhml_get_bs (GF_BitStream **bs, char *data, u32 size, u32 mode)
static void	nhmldmx_set_subs (GF_NHMLDmxCtx *ctx, GF_XMLNode *node, GF_FilterPacket *pck)
static GF_XMLNode *	nhmldmx_find_sai (GF_NHMLDmxCtx *ctx, char *id)
static void	nhmldmx_set_sai (GF_NHMLDmxCtx *ctx, GF_XMLNode *node, GF_FilterPacket *pck)
static GF_Err	nhmldmx_send_sample (GF_Filter *filter, GF_NHMLDmxCtx *ctx)
GF_Err	nhmldmx_update_document (GF_Filter *filter, GF_NHMLDmxCtx *ctx)
GF_Err	nhmldmx_process (GF_Filter *filter)
GF_Err	nhmldmx_initialize (GF_Filter *filter)
void	nhmldmx_finalize (GF_Filter *filter)
const GF_FilterRegister *	nhmlr_register (GF_FilterSession *session)

Variables
static const GF_FilterArgs	GF_NHMLDmxArgs []
static const GF_FilterCapability	NHMLDmxCaps []
GF_FilterRegister	NHMLDmxRegister

---

Data Structure Documentation

GF_NHMLDmxCtx

struct GF_NHMLDmxCtx

Collaboration diagram for GF_NHMLDmxCtx:

Data Fields
Bool	reframe
Double	index
GF_FilterPid *	ipid
GF_FilterPid *	opid
Bool	is_dims
Double	start_range
u64	first_dts
Bool	is_playing
GF_Fraction64	duration
Bool	in_seek
u32	timescale
u32	sample_num
FILE *	mdia
char *	media_file
GF_DOMParser *	parser
GF_XMLNode *	root
u32	parsing_state
u32	current_child_idx
Bool	has_sap
u32	compress_type
const char *	src_url
u64	last_dts
u32	dts_inc
u8 *	samp_buffer
u32	samp_buffer_alloc
u32	samp_buffer_size
char *	zlib_buffer
u32	zlib_buffer_alloc
u32	zlib_buffer_size
Bool	use_dict
char *	dictionary
u64	media_done
Bool	is_img
u32	header_end
GF_BitStream *	bs_w
GF_BitStream *	bs_r
GF_FileIO *	fio

XMLBreaker

struct XMLBreaker

Data Fields
Bool	from_is_start
Bool	from_is_end
Bool	to_is_start
Bool	to_is_end
u64	from_pos
u64	to_pos
char *	from_id
char *	to_id
GF_List *	id_stack
GF_SAXParser *	sax

Macro Definition Documentation

ZLIB_COMPRESS_SAFE

#define ZLIB_COMPRESS_SAFE   4

NHML_SCAN_INT

#define NHML_SCAN_INT	(		_fmt,
			_value
	)

Value:

        {\
        if (strstr(att->value, "0x")) { u32 __i; sscanf(att->value+2, "%x", &__i); _value = __i; }\
        else if (strstr(att->value, "0X")) { u32 __i; sscanf(att->value+2, "%X", &__i); _value = __i; }\
        else sscanf(att->value, _fmt, &_value); \
        }\

OFFS

#define OFFS

(

_n

)

#_n, offsetof(GF_NHMLDmxCtx, _n)

Function Documentation

nhmldmx_configure_pid()

GF_Err nhmldmx_configure_pid	(	GF_Filter *	filter,
		GF_FilterPid *	pid,
		Bool	is_remove
	)

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nhmldmx_process_event()

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

static

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nhmldmx_get_prop_ref()

static GF_XMLNode * nhmldmx_get_prop_ref ( GF_NHMLDmxCtx *  ctx, GF_XMLNode *  par, char *  ID  )

static

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nhmldmx_get_props()

static GF_XMLNode * nhmldmx_get_props ( GF_NHMLDmxCtx *  ctx, char *  ID  )

static

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nhmldmx_set_props()

static void nhmldmx_set_props ( GF_NHMLDmxCtx *  ctx, GF_XMLNode *  props, GF_FilterPacket *  pck  )

static

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nhml_node_start()

static void nhml_node_start ( void *  sax_cbck, const char *  node_name, const char *  name_space, const GF_XMLAttribute *  attributes, u32  nb_attributes  )

static

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nhml_node_end()

static void nhml_node_end ( void *  sax_cbck, const char *  node_name, const char *  name_space  )

static

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nhml_sample_from_xml()

static GF_Err nhml_sample_from_xml ( GF_NHMLDmxCtx *  ctx, char *  xml_file, char *  xmlFrom, char *  xmlTo  )

static

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compress_sample_data()

static GF_Err compress_sample_data ( GF_NHMLDmxCtx *  ctx, u32  compress_type, char **  dict, u32  offset  )

static

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nhmldmx_config_output()

static GF_Err nhmldmx_config_output ( GF_Filter *  filter, GF_NHMLDmxCtx *  ctx, GF_XMLNode *  root  )

static

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nhmldmx_init_parsing()

static GF_Err nhmldmx_init_parsing ( GF_Filter *  filter, GF_NHMLDmxCtx *  ctx  )

static

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nhml_get_bs()

void nhml_get_bs	(	GF_BitStream **	bs,
		char *	data,
		u32	size,
		u32	mode
	)

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nhmldmx_set_subs()

static void nhmldmx_set_subs ( GF_NHMLDmxCtx *  ctx, GF_XMLNode *  node, GF_FilterPacket *  pck  )

static

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nhmldmx_find_sai()

static GF_XMLNode * nhmldmx_find_sai ( GF_NHMLDmxCtx *  ctx, char *  id  )

static

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nhmldmx_set_sai()

static void nhmldmx_set_sai ( GF_NHMLDmxCtx *  ctx, GF_XMLNode *  node, GF_FilterPacket *  pck  )

static

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nhmldmx_send_sample()

static GF_Err nhmldmx_send_sample ( GF_Filter *  filter, GF_NHMLDmxCtx *  ctx  )

static

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nhmldmx_update_document()

GF_Err nhmldmx_update_document	(	GF_Filter *	filter,
		GF_NHMLDmxCtx *	ctx
	)

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nhmldmx_process()

GF_Err nhmldmx_process

(

GF_Filter *

filter

)

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nhmldmx_initialize()

GF_Err nhmldmx_initialize

(

GF_Filter *

filter

)

nhmldmx_finalize()

void nhmldmx_finalize

(

GF_Filter *

filter

)

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nhmlr_register()

const GF_FilterRegister * nhmlr_register

(

GF_FilterSession *

session

)

Variable Documentation

GF_NHMLDmxArgs

const GF_FilterArgs GF_NHMLDmxArgs[]

static

Initial value:

=
{
        { OFFS(reframe), "force re-parsing of referenced content", GF_PROP_BOOL, "false", NULL, GF_FS_ARG_HINT_ADVANCED},
        { OFFS(index), "indexing window length", GF_PROP_DOUBLE, "1.0", NULL, 0},
        {0}
}

NHMLDmxCaps

const GF_FilterCapability NHMLDmxCaps[]

static

Initial value:

=
{
        CAP_UINT(GF_CAPS_INPUT, GF_PROP_PID_STREAM_TYPE, GF_STREAM_FILE),
        CAP_STRING(GF_CAPS_INPUT, GF_PROP_PID_FILE_EXT, "nhml|dims|dml"),
        CAP_STRING(GF_CAPS_INPUT, GF_PROP_PID_MIME, "application/x-nhml|application/dims"),
        CAP_UINT(GF_CAPS_OUTPUT_EXCLUDED, GF_PROP_PID_STREAM_TYPE, GF_STREAM_UNKNOWN),
 
}

NHMLDmxRegister

GF_FilterRegister NHMLDmxRegister

Initial value:

= {
        .name = "nhmlr",
 
        GF_FS_SET_HELP("This filter reads NHML files/data to produce a media PID and frames.\n"
        "NHML documentation is available at https://wiki.gpac.io/xmlformats/NHML-Format\n")
        .private_size = sizeof(GF_NHMLDmxCtx),
        .flags = GF_FS_REG_USE_SYNC_READ,
        .args = GF_NHMLDmxArgs,
        .initialize = nhmldmx_initialize,
        .finalize = nhmldmx_finalize,
        SETCAPS(NHMLDmxCaps),
        .configure_pid = nhmldmx_configure_pid,
        .process = nhmldmx_process,
        .process_event = nhmldmx_process_event,
        .hint_class_type = GF_FS_CLASS_TOOL
}