descriptor.h

Dvbstreamer 用在解析MPTS的部分内容

/*****************************************************************************
 * descriptor.h
 * (c)2001-2002 VideoLAN
 * $Id: descriptor.h 88 2004-02-24 14:31:18Z sam $
 *
 * Authors: Arnaud de Bossoreille de Ribou <[e-mail]>
 *
 * 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 <descriptor.h>
 * \author Arnaud de Bossoreille de Ribou <[e-mail]>
 * \brief Common descriptor tools.
 *
 * Descriptor structure and its Manipulation tools.
 */

#ifndef _DVBPSI_DESCRIPTOR_H_
#define _DVBPSI_DESCRIPTOR_H_

#ifdef __cplusplus
extern "C" {
#endif


/*****************************************************************************
 * dvbpsi_descriptor_t
 *****************************************************************************/
/*!
 * \struct dvbpsi_descriptor_s
 * \brief Descriptor structure.
 *
 * This structure is used to store a descriptor.
 * (ISO/IEC 13818-1 section 2.6).
 */
/*!
 * \typedef struct dvbpsi_descriptor_s dvbpsi_descriptor_t
 * \brief dvbpsi_descriptor_t type definition.
 */
typedef struct dvbpsi_descriptor_s
{
  uint8_t                       i_tag;          /*!< descriptor_tag */
  uint8_t                       i_length;       /*!< descriptor_length */

  uint8_t *                     p_data;         /*!< content */

  struct dvbpsi_descriptor_s *  p_next;         /*!< next element of
                                                     the list */

  void *                        p_decoded;      /*!< decoded descriptor */

} dvbpsi_descriptor_t;


/*****************************************************************************
 * dvbpsi_NewDescriptor
 *****************************************************************************/
/*!
 * \fn dvbpsi_descriptor_t* dvbpsi_NewDescriptor(uint8_t i_tag,
                                                 uint8_t i_length,
                                                 uint8_t* p_data)
 * \brief Creation of a new dvbpsi_descriptor_t structure.
 * \param i_tag descriptor's tag
 * \param i_length descriptor's length
 * \param p_data descriptor's data
 * \return a pointer to the descriptor.
 */
dvbpsi_descriptor_t* dvbpsi_NewDescriptor(uint8_t i_tag, uint8_t i_length,
                                          uint8_t* p_data);


/*****************************************************************************
 * dvbpsi_DeleteDescriptors
 *****************************************************************************/
/*!
 * \fn void dvbpsi_DeleteDescriptors(dvbpsi_descriptor_t* p_descriptor)
 * \brief Destruction of a dvbpsi_descriptor_t structure.
 * \param p_descriptor pointer to the first descriptor structure
 * \return nothing.
 */
void dvbpsi_DeleteDescriptors(dvbpsi_descriptor_t* p_descriptor);


#ifdef __cplusplus
};
#endif

#else
#error "Multiple inclusions of descriptor.h"
#endif