stbdsfn.c File Reference

DVB subtitle control processing functions. More...

#include <string.h>
#include <techtype.h>
#include <dbgfuncs.h>
#include "stbhwos.h"
#include "stbhwav.h"
#include "stbhwosd.h"
#include "stbheap.h"
#include "stbds.h"
#include "stbdpc.h"

Macros
#define	STB_SUB_DRIVER_PRINT(x)
#define	STB_SEGMENT_PRINT(x)
#define	STB_SUMMARY_PRINT(x)
#define	STB_REGION_PRINT(x)
#define	STB_CDS_PRINT(x)
#define	STB_CLUT_PRINT(x)
#define	STB_ODS_PRINT(x)
#define	STB_OBJECT_PRINT(x)
#define	STB_PIXMAP_PRINT(x)
#define	STB_END_PRINT(x)
#define	TEMP_BUFFER_SIZE   (1024 * 2)
#define	SCAN_LINE_WIDTH   1950
#define	MAX_REGION_WIDTH   1920
#define	MAX_REGION_HEIGHT   1080
#define	FIELD_SCAN_LINES   (MAX_REGION_HEIGHT / 2)
#define	TOP_FIELD_ONLY   1
#define	BOTTOM_FIELD_ONLY   2
#define	BOTH_FIELDS   0

Typedefs
typedef struct pixel_sub_data_block	S_PIXEL_SUB_DATA_BLOCK

Functions
void	dump_physical_regions (const char *label)
BOOLEAN	STB_DSInitialiseDVBSubtitlesProcessing (void)
	Initilises DVB subtitles, allocates a temporary buffer for use as a scratchpad and zero's the displayset structure and assigns the pages. More...
S_CLUT *	STB_DSGetClut (S_CLUT *clut_list, U16BIT clut_id)
	Finds or malloc's a new CLUT and assigns the family pointers to the default data. version_id is set to 0xff where the valid values are in the range 0 .. 0xf[4bits]. More...
BOOLEAN	STB_DSSegmentDDS (U8BIT *data, U16BIT pes_len, U16BIT processed_bytes)
	Processes the Display Definition segment in accordance with ETSI document ETS 300 743. More...
BOOLEAN	STB_DSSegmentPCS (U8BIT *data, U16BIT pes_len, U16BIT processed_bytes, BOOLEAN external_force_acquisition)
	Processes the Page Composition segment in accordance with ETSI document ETS 300 743. More...
BOOLEAN	STB_DSSegmentRCS (U8BIT *data, U16BIT pes_len, U16BIT processed_bytes)
	Processes the Region Composition segment in accordance with ETSI document ETS 300 743. More...
BOOLEAN	STB_DSSegmentCDS (U8BIT *data, U16BIT pes_len, U16BIT processed_bytes)
	Processes the CLUT Definition segment in accordance with ETSI document ETS 300 743. More...
BOOLEAN	STB_DSSegmentODS (U8BIT *data, U16BIT pes_len, U16BIT processed_bytes)
	Processes the Object Data segment in accordance with ETSI document ETS 300 743. More...
BOOLEAN	STB_DSSegmentEDS (U8BIT *data, U16BIT pes_len, U16BIT processed_bytes)
	DTG - Digital Terrestrial Television Requirements for Interoperability Subtitling: 28 August 1998: Version: 3.0 Clause 5.7.1 End of data segment, receit of this means the page is complete. More...
BOOLEAN	STB_DSGetPesPts (U8BIT *data, U8BIT *pts)
	Extracts the PTS from the PES packet header. More...
BOOLEAN	STB_DSSetDisplaySetPts (U8BIT path, U8BIT *pts)
	Copies the passed PTS into the display set structure. More...
S_DISPLAY_SET *	STB_DSGetDetails (void)
	Gets a pointer to the display set structure. More...
void	STB_DSClearDisplaySetStruct (void)
	Clears all information from the display set structure.
void	STB_DSClearCompositionPageDetails (void)
	Clears all information from the display set composition page.

Detailed Description

DVB subtitle control processing functions.

Date

12/09/2003

Function Documentation

S_CLUT* STB_DSGetClut	(	S_CLUT *	clut_list,
		U16BIT	clut_id
	)

Finds or malloc's a new CLUT and assigns the family pointers to the default data. version_id is set to 0xff where the valid values are in the range 0 .. 0xf[4bits].

Parameters

clut_list	- pointer to a S_CLUT structure
clut_id	- the index of the CLUT to be modified

Returns

S_CLUT pointer.

S_DISPLAY_SET* STB_DSGetDetails

(

void

)

Gets a pointer to the display set structure.

Returns

Returns pointer to display set structure.

BOOLEAN STB_DSGetPesPts	(	U8BIT *	data,
		U8BIT *	pts
	)

Extracts the PTS from the PES packet header.

Parameters

data	- pointer to the 1st byte of the PTS/DTS bytes
pts	- 5 byte array for the PTS info.

Returns

TRUE - if all 3 marker_bits' are set correctly. FALSE - if any of the 3 marker_bits' are not set.

BOOLEAN STB_DSInitialiseDVBSubtitlesProcessing

(

void

)

Initilises DVB subtitles, allocates a temporary buffer for use as a scratchpad and zero's the displayset structure and assigns the pages.

Returns

BOOLEAN - True/False for success/failure.

BOOLEAN STB_DSSegmentCDS	(	U8BIT *	data,
		U16BIT	pes_len,
		U16BIT	processed_bytes
	)

Processes the CLUT Definition segment in accordance with ETSI document ETS 300 743.

Parameters

data	- pointer to the beginning of the segment, the sync_byte.

Returns

BOOLEAN - True/False for success/failure.

BOOLEAN STB_DSSegmentDDS	(	U8BIT *	data,
		U16BIT	pes_len,
		U16BIT	processed_bytes
	)

Processes the Display Definition segment in accordance with ETSI document ETS 300 743.

Parameters

data	- pointer to the beginning of the segment, the sync_byte.

Returns

BOOLEAN - True/False for success/failure.

BOOLEAN STB_DSSegmentEDS	(	U8BIT *	data,
		U16BIT	pes_len,
		U16BIT	processed_bytes
	)

DTG - Digital Terrestrial Television Requirements for Interoperability Subtitling: 28 August 1998: Version: 3.0 Clause 5.7.1 End of data segment, receit of this means the page is complete.

Parameters

data	- pointer to the beginning of the segment, the sync_byte.

Returns

TRUE - success, FALSE for failure.

BOOLEAN STB_DSSegmentODS	(	U8BIT *	data,
		U16BIT	pes_len,
		U16BIT	processed_bytes
	)

Processes the Object Data segment in accordance with ETSI document ETS 300 743.

Parameters

data	- pointer to the beginning of the segment, the sync_byte.

Returns

BOOLEAN - True/False for success/failure.

BOOLEAN STB_DSSegmentPCS	(	U8BIT *	data,
		U16BIT	pes_len,
		U16BIT	processed_bytes,
		BOOLEAN	external_force_acquisition
	)

Processes the Page Composition segment in accordance with ETSI document ETS 300 743.

Parameters

data	- pointer to the beginning of the segment, the sync_byte. force_acquisition - signal to treat next acquisition point as a mode change, unless a mode change occurs first

Returns

BOOLEAN - True/False for success/failure.

BOOLEAN STB_DSSegmentRCS	(	U8BIT *	data,
		U16BIT	pes_len,
		U16BIT	processed_bytes
	)

Processes the Region Composition segment in accordance with ETSI document ETS 300 743.

Parameters

data	- pointer to the beginning of the segment, the sync_byte.

Returns

BOOLEAN - True/False for success/failure.

BOOLEAN STB_DSSetDisplaySetPts	(	U8BIT	path,
		U8BIT *	pts
	)

Copies the passed PTS into the display set structure.

Parameters

pts	- 5 byte array containing the PTS.

Returns

TRUE