write_generic.c File Reference

#include <gpac/filters.h>
#include <gpac/constants.h>
#include <gpac/bitstream.h>
#include <gpac/xml.h>
#include <gpac/base_coding.h>
#include <gpac/internal/isomedia_dev.h>
#include <gpac/webvtt.h>

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Data Structures
struct	GF_GenDumpCtx
struct	BITMAPFILEHEADER
struct	BITMAPINFOHEADER

Macros
#define	BI_RGB   0L
#define	OFFS(_n)   #_n, offsetof(GF_GenDumpCtx, _n)

Enumerations
enum	{ DECINFO_NO =0 , DECINFO_FIRST , DECINFO_SAP , DECINFO_AUTO }
enum	{ VTTH_SINGLE =0 , VTTH_SEG , VTTH_ALL }

Functions
GF_Err	writegen_configure_pid (GF_Filter *filter, GF_FilterPid *pid, Bool is_remove)
static GF_FilterPacket *	writegen_write_j2k (GF_GenDumpCtx *ctx, char *data, u32 data_size, GF_FilterPacket *in_pck)
static GF_FilterPacket *	writegen_write_bmp (GF_GenDumpCtx *ctx, char *data, u32 data_size)
static void	writegen_write_wav_header (GF_GenDumpCtx *ctx)
GF_XMLAttribute *	ttml_get_attr (GF_XMLNode *node, char *name)
static GF_XMLNode *	ttml_locate_div (GF_XMLNode *body, const char *region_name, u32 div_idx)
static GF_XMLNode *	ttml_get_head (GF_XMLNode *root)
GF_XMLNode *	ttml_get_body (GF_XMLNode *root)
static Bool	ttml_same_attr (GF_XMLNode *n1, GF_XMLNode *n2)
static void	ttml_merge_head (GF_XMLNode *node_src, GF_XMLNode *node_dst)
static GF_Err	ttml_embed_data (GF_XMLNode *node, u8 *aux_data, u32 aux_data_size, u8 *subs_data, u32 subs_data_size)
static GF_Err	writegen_push_ttml (GF_GenDumpCtx *ctx, char *data, u32 data_size, GF_FilterPacket *in_pck)
static GF_Err	writegen_flush_ttml (GF_GenDumpCtx *ctx)
static GF_Err	writegen_flush_ttxt (GF_GenDumpCtx *ctx)
static void	webvtt_timestamps_dump (GF_BitStream *bs, u64 start_ts, u64 end_ts, u32 timescale, Bool write_srt)
GF_Err	writegen_process (GF_Filter *filter)
static GF_Err	writegen_initialize (GF_Filter *filter)
void	writegen_finalize (GF_Filter *filter)
const GF_FilterRegister *	writegen_register (GF_FilterSession *session)
static GF_Err	writeuf_initialize (GF_Filter *filter)
const GF_FilterRegister *	writeuf_register (GF_FilterSession *session)
static GF_Err	ttmlmerge_initialize (GF_Filter *filter)
const GF_FilterRegister *	ttmlmerge_register (GF_FilterSession *session)

Variables
static GF_FilterCapability	GenDumpCaps []
static GF_FilterArgs	GenDumpArgs []
GF_FilterRegister	GenDumpRegister
static const GF_FilterCapability	FrameDumpCaps []
static GF_FilterCapability	GenDumpXCaps []
const GF_FilterRegister	WriteUFRegister
static GF_FilterCapability	TTMLMergeCaps []
const GF_FilterRegister	TTMLMergeRegister

---

Data Structure Documentation

GF_GenDumpCtx

struct GF_GenDumpCtx

Collaboration diagram for GF_GenDumpCtx:

Data Fields
Bool	exporter
Bool	frame
Bool	split
Bool	merge_region
u32	sstart
u32	send
u32	vtth
u32	pfmt
u32	afmt
u32	decinfo
GF_Fraction	dur
GF_FilterPid *	ipid
GF_FilterPid *	opid
u32	codecid
Bool	is_mj2k
u32	sample_num
const char *	dcfg
u32	dcfg_size
Bool	cfg_sent
GF_Fraction64	duration
Bool	first
GF_BitStream *	bs
u32	target_pfmt
u32	target_afmt
Bool	is_bmp
u32	is_y4m
u32	is_wav
u32	w
u32	h
u32	stride
u64	nb_bytes
Bool	dash_mode
Bool	trunc_audio
Bool	webvtt
u64	first_dts_plus_one
Bool	ttml_agg
GF_XMLNode *	ttml_root
GF_FilterPacket *	ttml_dash_pck
Bool	dump_srt
Bool	need_ttxt_footer
u8 *	write_buf
u32	write_alloc
Bool	unframe_only
Bool	vc1_ilaced
Bool	ttml_merger
u64	ttml_first_cts
GF_FilterPacket *	ttml_first_pck

BITMAPFILEHEADER

struct BITMAPFILEHEADER

Data Fields
u16	bfType
u32	bfSize
u16	bfReserved1
u16	bfReserved2
u32	bfOffBits

BITMAPINFOHEADER

struct BITMAPINFOHEADER

Data Fields
u32	biSize
s32	biWidth
s32	biHeight
u16	biPlanes
u16	biBitCount
u32	biCompression
u32	biSizeImage
s32	biXPelsPerMeter
s32	biYPelsPerMeter
u32	biClrUsed
u32	biClrImportant

Macro Definition Documentation

BI_RGB

#define BI_RGB   0L

OFFS

#define OFFS

(

_n

)

#_n, offsetof(GF_GenDumpCtx, _n)

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
DECINFO_NO
DECINFO_FIRST
DECINFO_SAP
DECINFO_AUTO

anonymous enum

anonymous enum

Enumerator
VTTH_SINGLE
VTTH_SEG
VTTH_ALL

Function Documentation

writegen_configure_pid()

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

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writegen_write_j2k()

static GF_FilterPacket* writegen_write_j2k ( GF_GenDumpCtx *  ctx, char *  data, u32  data_size, GF_FilterPacket *  in_pck  )

static

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writegen_write_bmp()

static GF_FilterPacket* writegen_write_bmp ( GF_GenDumpCtx *  ctx, char *  data, u32  data_size  )

static

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writegen_write_wav_header()

static void writegen_write_wav_header ( GF_GenDumpCtx *  ctx )

static

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ttml_get_attr()

GF_XMLAttribute* ttml_get_attr	(	GF_XMLNode *	node,
		char *	name
	)

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ttml_locate_div()

static GF_XMLNode* ttml_locate_div ( GF_XMLNode *  body, const char *  region_name, u32  div_idx  )

static

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ttml_get_head()

static GF_XMLNode* ttml_get_head ( GF_XMLNode *  root )

static

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ttml_get_body()

GF_XMLNode* ttml_get_body

(

GF_XMLNode *

root

)

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ttml_same_attr()

static Bool ttml_same_attr ( GF_XMLNode *  n1, GF_XMLNode *  n2  )

static

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ttml_merge_head()

static void ttml_merge_head ( GF_XMLNode *  node_src, GF_XMLNode *  node_dst  )

static

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ttml_embed_data()

static GF_Err ttml_embed_data ( GF_XMLNode *  node, u8 *  aux_data, u32  aux_data_size, u8 *  subs_data, u32  subs_data_size  )

static

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writegen_push_ttml()

static GF_Err writegen_push_ttml ( GF_GenDumpCtx *  ctx, char *  data, u32  data_size, GF_FilterPacket *  in_pck  )

static

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writegen_flush_ttml()

static GF_Err writegen_flush_ttml ( GF_GenDumpCtx *  ctx )

static

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writegen_flush_ttxt()

static GF_Err writegen_flush_ttxt ( GF_GenDumpCtx *  ctx )

static

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webvtt_timestamps_dump()

static void webvtt_timestamps_dump ( GF_BitStream *  bs, u64  start_ts, u64  end_ts, u32  timescale, Bool  write_srt  )

static

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writegen_process()

GF_Err writegen_process

(

GF_Filter *

filter

)

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writegen_initialize()

static GF_Err writegen_initialize ( GF_Filter *  filter )

static

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writegen_finalize()

void writegen_finalize

(

GF_Filter *

filter

)

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writegen_register()

const GF_FilterRegister* writegen_register

(

GF_FilterSession *

session

)

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writeuf_initialize()

static GF_Err writeuf_initialize ( GF_Filter *  filter )

static

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writeuf_register()

const GF_FilterRegister* writeuf_register

(

GF_FilterSession *

session

)

ttmlmerge_initialize()

static GF_Err ttmlmerge_initialize ( GF_Filter *  filter )

static

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ttmlmerge_register()

const GF_FilterRegister* ttmlmerge_register

(

GF_FilterSession *

session

)

Variable Documentation

GenDumpCaps

GF_FilterCapability GenDumpCaps[]

static

GenDumpArgs

GF_FilterArgs GenDumpArgs[]

static

Initial value:

=
{
        { OFFS(exporter), "compatibility with old exporter, displays export results", GF_PROP_BOOL, "false", NULL, GF_FS_ARG_HINT_ADVANCED},
        { OFFS(pfmt), "pixel format for raw extract. If not set, derived from extension", GF_PROP_PIXFMT, "none", NULL, 0},
        { OFFS(afmt), "audio format for raw extract. If not set, derived from extension", GF_PROP_PCMFMT, "none", NULL, 0},
        { OFFS(decinfo), "decoder config insert mode\n"
        "- no: never inserted\n"
        "- first: inserted on first packet\n"
        "- sap: inserted at each SAP\n"
        "- auto: selects between no and first based on media type", GF_PROP_UINT, "auto", "no|first|sap|auto", GF_FS_ARG_HINT_ADVANCED},
        { OFFS(split), "force one file per frame", GF_PROP_BOOL, "false", NULL, GF_FS_ARG_HINT_ADVANCED},
        { OFFS(frame), "force single frame dump with no rewrite. In this mode, all codec types are supported", GF_PROP_BOOL, "false", NULL, 0},
        { OFFS(sstart), "start number of frame to forward. If 0, all samples are forwarded", GF_PROP_UINT, "0", NULL, 0},
        { OFFS(send), "end number of frame to forward. If less than start frame, all samples after start are forwarded", GF_PROP_UINT, "0", NULL, 0},
        { OFFS(dur), "duration of media to forward after first sample. If 0, all samples are forwarded", GF_PROP_FRACTION, "0", NULL, 0},
        { OFFS(merge_region), "merge TTML regions with same ID while reassembling TTML doc", GF_PROP_BOOL, "false", NULL, 0},
        { OFFS(vtth), "vtt header injection mode\n"
        "- single: inject only at first frame of the stream\n"
        "- seg: inject at each non-empty segment\n"
        "- all: inject at each segment even empty ones", GF_PROP_UINT, "seg", "single|seg|all", 0},
        {0}
}

GenDumpRegister

GF_FilterRegister GenDumpRegister

Initial value:

= {
        .name = "writegen",
 
        GF_FS_SET_HELP("Generic single stream to file converter, used when extracting/converting PIDs.\n"
        "The writegen filter should usually not be explicitly loaded without a source ID specified, since the filter would likely match any PID connection.")
        .private_size = sizeof(GF_GenDumpCtx),
        .args = GenDumpArgs,
        .initialize = writegen_initialize,
        .finalize = writegen_finalize,
        SETCAPS(GenDumpCaps),
        .configure_pid = writegen_configure_pid,
        .process = writegen_process,
        .flags = GF_FS_REG_TEMP_INIT,
        .hint_class_type = GF_FS_CLASS_TOOL
}

FrameDumpCaps

const GF_FilterCapability FrameDumpCaps[]

static

Initial value:

=
{
        CAP_BOOL(GF_CAPS_INPUT_EXCLUDED, GF_PROP_PID_UNFRAMED, GF_TRUE),
        CAP_UINT(GF_CAPS_INPUT_EXCLUDED, GF_PROP_PID_CODECID, GF_CODECID_NONE),
        CAP_UINT(GF_CAPS_INPUT_EXCLUDED, GF_PROP_PID_STREAM_TYPE, GF_STREAM_UNKNOWN),
        CAP_UINT(GF_CAPS_INPUT_EXCLUDED, GF_PROP_PID_STREAM_TYPE, GF_STREAM_FILE),
 
}

GenDumpXCaps

GF_FilterCapability GenDumpXCaps[]

static

Initial value:

=
{
        CAP_UINT(GF_CAPS_INPUT_OUTPUT|GF_CAPFLAG_EXCLUDED, GF_PROP_PID_STREAM_TYPE, GF_STREAM_FILE),
        CAP_UINT(GF_CAPS_INPUT_OUTPUT|GF_CAPFLAG_EXCLUDED, GF_PROP_PID_CODECID, GF_CODECID_NONE),
        CAP_BOOL(GF_CAPS_INPUT_EXCLUDED, GF_PROP_PID_UNFRAMED, GF_TRUE),
        CAP_BOOL(GF_CAPS_OUTPUT, GF_PROP_PID_UNFRAMED, GF_TRUE),
        
        CAP_STRING(GF_CAPS_OUTPUT|GF_CAPFLAG_OPTIONAL, GF_PROP_PID_FILE_EXT, "__ignore"),
}

WriteUFRegister

const GF_FilterRegister WriteUFRegister

Initial value:

= {
        .name = "writeuf",
 
 
        .private_size = sizeof(GF_GenDumpCtx),
        .initialize = writeuf_initialize,
        .finalize = writegen_finalize,
        SETCAPS(GenDumpXCaps),
        .configure_pid = writegen_configure_pid,
        .process = writegen_process,
        .hint_class_type = GF_FS_CLASS_FRAMING
}

TTMLMergeCaps

GF_FilterCapability TTMLMergeCaps[]

static

Initial value:

=
{
        CAP_UINT(GF_CAPS_INPUT_OUTPUT, GF_PROP_PID_STREAM_TYPE, GF_STREAM_TEXT),
        CAP_UINT(GF_CAPS_INPUT_OUTPUT, GF_PROP_PID_CODECID, GF_CODECID_SUBS_XML),
        CAP_BOOL(GF_CAPS_INPUT_EXCLUDED, GF_PROP_PID_UNFRAMED, GF_TRUE),
}

TTMLMergeRegister

const GF_FilterRegister TTMLMergeRegister

Initial value:

= {
        .name = "ttmlmerge",
 
 
 
        .private_size = sizeof(GF_GenDumpCtx),
        .initialize = ttmlmerge_initialize,
        .finalize = writegen_finalize,
        SETCAPS(TTMLMergeCaps),
        .configure_pid = writegen_configure_pid,
        .process = writegen_process,
        .hint_class_type = GF_FS_CLASS_SUBTITLE
}