LASeR SAF creation

LASeR SAF multiplexing. More...

Collaboration diagram for LASeR SAF creation:

Functions
GF_SAFMuxer *	gf_saf_mux_new ()
void	gf_saf_mux_del (GF_SAFMuxer *mux)
GF_Err	gf_saf_mux_stream_add (GF_SAFMuxer *mux, u32 stream_id, u32 ts_res, u32 buffersize_db, u8 stream_type, u8 object_type, char *mime_type, char *dsi, u32 dsi_len, char *remote_url)
GF_Err	gf_saf_mux_add_au (GF_SAFMuxer *mux, u32 stream_id, u32 CTS, char *data, u32 data_len, Bool is_rap)
GF_Err	gf_saf_mux_for_time (GF_SAFMuxer *mux, u32 time_ms, Bool force_end_of_session, u8 **out_data, u32 *out_size)
void	gf_media_get_video_timing (Double fps, u32 *timescale, u32 *ts_inc)
u32	gf_dolby_vision_level (u32 width, u32 height, u64 fps_num, u64 fps_den, u32 codecid)

Detailed Description

This section documents functions for LASeR SAF multiplexing.

Function Documentation

gf_saf_mux_new()

GF_SAFMuxer* gf_saf_mux_new

(

)

    Creates a new SAF Multiplexer

Returns

the SAF multiplexer object

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gf_saf_mux_del()

void gf_saf_mux_del

(

GF_SAFMuxer *

mux

)

    SAF Multiplexer destructor

Parameters

mux	the SAF multiplexer object

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gf_saf_mux_stream_add()

GF_Err gf_saf_mux_stream_add	(	GF_SAFMuxer *	mux,
		u32	stream_id,
		u32	ts_res,
		u32	buffersize_db,
		u8	stream_type,
		u8	object_type,
		char *	mime_type,
		char *	dsi,
		u32	dsi_len,
		char *	remote_url
	)

Adds a new stream in the SAF multiplex

Parameters

mux	the SAF multiplexer object
stream_id	ID of the SAF stream to create
ts_res	timestamp resolution for AUs in this stream
buffersize_db	size of decoding buffer in bytes
stream_type	MPEG-4 systems stream type of this stream
object_type	MPEG-4 systems object type indication of this stream
mime_type	MIME type for this stream, NULL if unknown
dsi	Decoder specific info for this stream
dsi_len	specific info size for this stream
remote_url	URL of the SAF stream if not embedded in the multiplex

Returns

error if any

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gf_saf_mux_add_au()

GF_Err gf_saf_mux_add_au	(	GF_SAFMuxer *	mux,
		u32	stream_id,
		u32	CTS,
		char *	data,
		u32	data_len,
		Bool	is_rap
	)

adds an AU to the given Warning, AU data will be freed by the multiplexer. AUs are NOT re-sorted by CTS, in order to enable audio interleaving.

Parameters

mux	the SAF multiplexer object
stream_id	ID of the SAF stream to remove
CTS	composition timestamp of the AU
data	payload of the AU
data_len	payload size of the AU
is_rap	set to GF_TRUE to signal a random access point

Returns

error if any

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gf_saf_mux_for_time()

GF_Err gf_saf_mux_for_time	(	GF_SAFMuxer *	mux,
		u32	time_ms,
		Bool	force_end_of_session,
		u8 **	out_data,
		u32 *	out_size
	)

Gets the content of the multiplexer for the given time.

Parameters

mux	the SAF multiplexer object
time_ms	target mux time in ms
force_end_of_session	if set to GF_TRUE, this flushes the SAF Session - no more operations will be allowed on the muxer
out_data	output SAF data
out_size	output SAF data size

Returns

error if any

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gf_media_get_video_timing()

void gf_media_get_video_timing	(	Double	fps,
		u32 *	timescale,
		u32 *	ts_inc
	)

Gets timescale and TS increment from double FPS value.

Parameters

fps	the target fps
timescale	output timescale value
ts_inc	output timestamp increment value

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gf_dolby_vision_level()

u32 gf_dolby_vision_level	(	u32	width,
		u32	height,
		u64	fps_num,
		u64	fps_den,
		u32	codecid
	)

gets dolby vision level

Parameters

width	width in pixels of video
height	height in pixels of video
fps_num	framerate numerator
fps_den	framerate denominator
codecid	GPAC codec ID

Returns

dv level

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