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/*****************************************************************************
* dr_56.h
* (c)2004-2007 VideoLAN
* $Id: dr_56.h 93 2004-10-19 19:17:49Z massiot $
*
* Authors: Derk-Jan Hartman <hartman at videolan dot org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*****************************************************************************/
/*!
* \file <dr_56.h>
* \author Derk-Jan Hartman <hartman at videolan dot org>
* \brief EBU Teletext descriptor parsing.
*
* DVB EBU Teletext descriptor parsing, according to ETSI EN 300 468
* section 6.2.41.
*
* NOTE: this descriptor is known by tag value 0x56 AND 0x46
*/
#ifndef _DVBPSI_DR_56_H_
#define _DVBPSI_DR_56_H_
#ifdef __cplusplus
extern "C" {
#endif
/*****************************************************************************
* dvbpsi_teletext_t
*****************************************************************************/
/*!
* \struct dvbpsi_teletextpage_t
* \brief one teletext page structure.
*
* This structure is used since teletext_descriptor will contain several
* pages
*/
/*!
* \typedef struct dvbpsi_teletextpage_s dvbpsi_teletextpage_t
* \brief dvbpsi_teletextpage_t type definition.
*/
typedef struct dvbpsi_teletextpage_s
{
uint8_t i_iso6392_language_code[3]; /* 24 bits */
uint8_t i_teletext_type; /* 5 bits */
uint8_t i_teletext_magazine_number; /* 3 bits */
uint8_t i_teletext_page_number; /* 8 bits */
} dvbpsi_teletextpage_t;
/*****************************************************************************
* dvbpsi_teletext_dr_t
*****************************************************************************/
/*!
* \struct dvbpsi_teletext_dr_s
* \brief "teletext" descriptor structure.
*
* This structure is used to store a decoded "teletext"
* descriptor. (ETSI EN 300 468 section 6.2.41).
*/
/*!
* \typedef struct dvbpsi_teletext_dr_s dvbpsi_teletext_dr_t
* \brief dvbpsi_teletext_dr_t type definition.
*/
typedef struct dvbpsi_teletext_dr_s
{
uint8_t i_pages_number;
dvbpsi_teletextpage_t p_pages[64];
} dvbpsi_teletext_dr_t;
/*****************************************************************************
* dvbpsi_DecodeTeletextDataDr
*****************************************************************************/
/*!
* \fn dvbpsi_teletext_dr_t * dvbpsi_DecodeTeletextDataDr(
dvbpsi_descriptor_t * p_descriptor)
* \brief "teletext" descriptor decoder.
* \param p_descriptor pointer to the descriptor structure
* \return a pointer to a new "teletext" descriptor structure
* which contains the decoded data.
*/
dvbpsi_teletext_dr_t* dvbpsi_DecodeTeletextDr(
dvbpsi_descriptor_t * p_descriptor);
/*****************************************************************************
* dvbpsi_GenTeletextDr
*****************************************************************************/
/*!
* \fn dvbpsi_descriptor_t * dvbpsi_GenTeletextDr(
dvbpsi_teletext_dr_t * p_decoded, int b_duplicate)
* \brief "teletext" descriptor generator.
* \param p_decoded pointer to a decoded "teletext" descriptor
* structure
* \param b_duplicate if non zero then duplicate the p_decoded structure into
* the descriptor
* \return a pointer to a new descriptor structure which contains encoded data.
*/
dvbpsi_descriptor_t * dvbpsi_GenTeletextDr(
dvbpsi_teletext_dr_t * p_decoded,
int b_duplicate);
#ifdef __cplusplus
};
#endif
#endif
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