Commit 57e31b5a authored by Roberto Corno's avatar Roberto Corno Committed by Jean-Paul Saman

Add 0x49 descriptor support

Some readability improvements.
Signed-off-by: Jean-Paul Saman's avatarJean-Paul Saman <jean-paul.saman@m2x.nl>
parent 943165fe
......@@ -44,6 +44,7 @@ pkginclude_HEADERS = dvbpsi.h psi.h descriptor.h demux.h \
descriptors/dr_45.h \
descriptors/dr_47.h \
descriptors/dr_48.h \
descriptors/dr_49.h \
descriptors/dr_4d.h \
descriptors/dr_4e.h \
descriptors/dr_52.h \
......@@ -85,6 +86,7 @@ descriptors_src = descriptors/dr_02.c \
descriptors/dr_45.c \
descriptors/dr_47.c \
descriptors/dr_48.c \
descriptors/dr_49.c \
descriptors/dr_4d.c \
descriptors/dr_4e.c \
descriptors/dr_52.c \
......
......@@ -54,6 +54,7 @@
#include "dr_45.h"
#include "dr_47.h"
#include "dr_48.h"
#include "dr_49.h"
#include "dr_4d.h"
#include "dr_4e.h"
#include "dr_52.h"
......
/*
* dr_49.c
* Copyright (C) 2012 VideoLAN
*
* Authors: rcorno (May 21, 2012)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#if defined(HAVE_INTTYPES_H)
#include <inttypes.h>
#elif defined(HAVE_STDINT_H)
#include <stdint.h>
#endif
#include "../dvbpsi.h"
#include "../dvbpsi_private.h"
#include "../descriptor.h"
#include "dr_49.h"
/*****************************************************************************
* dvbpsi_DecodeCountryAvailability
*****************************************************************************/
dvbpsi_country_availability_dr_t* dvbpsi_DecodeCountryAvailability(
dvbpsi_descriptor_t * p_descriptor)
{
dvbpsi_country_availability_dr_t * p_decoded;
/* Check the tag */
if (p_descriptor->i_tag != 0x49)
return NULL;
/* Don't decode twice */
if (p_descriptor->p_decoded)
return p_descriptor->p_decoded;
/* Check the length */
unsigned int code_count = (p_descriptor->i_length-1) / 3;
if ((p_descriptor->i_length < 1) ||
((p_descriptor->i_length-1) % 3 != 0) ||
(code_count > 83))
return NULL;
/* Allocate memory */
p_decoded = (dvbpsi_country_availability_dr_t*)calloc(1, sizeof(dvbpsi_country_availability_dr_t));
if (!p_decoded)
return NULL;
/* Decode data */
p_decoded->i_code_count = code_count;
p_decoded->b_country_availability_flag = p_descriptor->p_data[0] & 0x80;
for (uint8_t i = 0; i < p_decoded->i_code_count; i++)
{
p_decoded->code[i].iso_639_code[0] = p_descriptor->p_data[1+i*3];
p_decoded->code[i].iso_639_code[1] = p_descriptor->p_data[2+i*3];
p_decoded->code[i].iso_639_code[2] = p_descriptor->p_data[3+i*3];
}
p_descriptor->p_decoded = (void*)p_decoded;
return p_decoded;
}
/*****************************************************************************
* dvbpsi_GenCountryAvailabilityDr
*****************************************************************************/
dvbpsi_descriptor_t * dvbpsi_GenCountryAvailabilityDr(
dvbpsi_country_availability_dr_t * p_decoded,
bool b_duplicate)
{
/* Check the length */
if (p_decoded->i_code_count > 83)
return NULL;
/* Create the descriptor */
dvbpsi_descriptor_t * p_descriptor =
dvbpsi_NewDescriptor(0x83, 1+p_decoded->i_code_count*3, NULL);
if (!p_descriptor)
return NULL;
/* Encode data */
p_descriptor->p_data[0] = (p_decoded->b_country_availability_flag) ? 0x80: 0x00;
for (uint8_t i = 0; i < p_decoded->i_code_count; i++)
{
p_descriptor->p_data[1+i*3] = p_decoded->code[i].iso_639_code[0];
p_descriptor->p_data[2+i*3] = p_decoded->code[i].iso_639_code[1];
p_descriptor->p_data[3+i*3] = p_decoded->code[i].iso_639_code[2];
}
if (b_duplicate)
{
/* Duplicate decoded data */
p_descriptor->p_decoded =
dvbpsi_DuplicateDecodedDescriptor(p_descriptor->p_decoded,
sizeof(dvbpsi_country_availability_dr_t));
}
return p_descriptor;
}
/*****************************************************************************
* dr_49.h
* Copyright (C) 2012 VideoLAN
*
* Authors: rcorno (May 21, 2012)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
/*!
* \file <dr_49.h>
* \author Corno Roberto <corno.roberto@gmail.com>
* \brief Application interface for the DVB "country availability"
* descriptor decoder and generator.
*
* Application interface for the DVB "country availability" descriptor
* decoder and generator. This descriptor's definition can be found in
* ETSI EN 300 468 section 6.2.10.
*/
#ifndef DR_49_H_
#define DR_49_H_
#ifdef __cplusplus
extern "C" {
#endif
typedef uint8_t iso_639_language_code_t[3]; /*!< ISO639 three letter language codes */
/*****************************************************************************
* dvbpsi_country_availability_dr_t
*****************************************************************************/
/*!
* \struct dvbpsi_country_availability_dr_t
* \brief "country availability" descriptor structure.
*
* This structure is used to store a decoded "country availability"
* descriptor. (ETSI EN 300 468 section 6.2.10).
*/
/*!
* \typedef struct dvbpsi_country_availability_dr_s dvbpsi_country_availability_dr_t
* \brief dvbpsi_country_availability_dr_t type definition.
*/
typedef struct dvbpsi_country_availability_dr_s
{
bool b_country_availability_flag; /*!< country availability flag */
uint8_t i_code_count; /*!< length of the i_iso_639_code
array */
struct {
iso_639_language_code_t iso_639_code;
} code[84]; /*!< ISO_639_language_code */
} dvbpsi_country_availability_dr_t;
/*****************************************************************************
* dvbpsi_DecodeCountryAvailabilityDr
*****************************************************************************/
/*!
* \fn dvbpsi_country_availability_dr_t * dvbpsi_DecodeCountryAvailability(
dvbpsi_descriptor_t * p_descriptor)
* \brief "country availability" descriptor decoder.
* \param p_descriptor pointer to the descriptor structure
* \return a pointer to a new "country availability" descriptor structure
* which contains the decoded data.
*/
dvbpsi_country_availability_dr_t* dvbpsi_DecodeCountryAvailability(
dvbpsi_descriptor_t * p_descriptor);
/*****************************************************************************
* dvbpsi_GenCountryAvailabilityDr
*****************************************************************************/
/*!
* \fn dvbpsi_descriptor_t * dvbpsi_GenCountryAvailabilityDr(
dvbpsi_country_availability_dr_t * p_decoded, int b_duplicate)
* \brief "country availability" descriptor generator.
* \param p_decoded pointer to a decoded "country availability" 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_GenCountryAvailabilityDr(
dvbpsi_country_availability_dr_t * p_decoded,
bool b_duplicate);
#ifdef __cplusplus
};
#endif
#else
#error "Multiple inclusions of dr_49.h"
#endif /* DR_49_H_ */
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