desc_69.h 4.95 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69
/*****************************************************************************
 * desc_69.h: ETSI EN 300 468 Descriptor 0x69: PDC descriptor
 *****************************************************************************
 * Copyright (C) 2011 Unix Solutions Ltd.
 *
 * Authors: Georgi Chorbadzhiyski <georgi@unixsol.org>
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject
 * to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *****************************************************************************/

/*
 * Normative references:
 *  - ETSI EN 300 468 V1.11.1 (2010-04) (SI in DVB systems)
 */

#ifndef __BITSTREAM_DVB_DESC_69_H__
#define __BITSTREAM_DVB_DESC_69_H__

#include <bitstream/common.h>
#include <bitstream/mpeg/psi/descriptors.h>

#ifdef __cplusplus
extern "C"
{
#endif

/*****************************************************************************
 * Descriptor 0x69: PDC descriptor
 *****************************************************************************/
#define DESC69_HEADER_SIZE      (DESC_HEADER_SIZE + 3)

static inline void desc69_init(uint8_t *p_desc)
{
    desc_set_tag(p_desc, 0x69);
    desc_set_length(p_desc, DESC69_HEADER_SIZE - DESC_HEADER_SIZE);
    p_desc[2] = 0xf0;
}

static inline uint32_t desc69_get_pil(const uint8_t *p_desc)
{
    return ((p_desc[2] & 0x0f) << 16) | (p_desc[3] << 8) | p_desc[4];
}

static inline void desc69_set_pil(uint8_t *p_desc, uint32_t i_pil)
{
    p_desc[2] = ((i_pil >> 16) & 0x0f) | 0xf0;
    p_desc[3] =  (i_pil >>  8) & 0xff;
    p_desc[4] =   i_pil        & 0x0f;
}

static inline uint8_t desc69_get_day(const uint8_t *p_desc)
{
70 71
    uint8_t i_day = ((p_desc[2] & 0x0f) << 1) | ((p_desc[3] & 0x80) >> 7); // rrrr1111 1xxxxxxx
    return i_day;
72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154
}

static inline void desc69_set_day(uint8_t *p_desc, uint8_t i_day)
{
    i_day &= 0x1f; // 5 bits
    p_desc[2] = 0xf0 | ((i_day >> 1) & 0x0f); // rrrr1111
    p_desc[3] = ((i_day & 0x01) << 7) | (p_desc[3] & 0x7f); // 1xxxxxxx
}

static inline uint8_t desc69_get_month(const uint8_t *p_desc)
{
    uint8_t i_month = ((p_desc[3] & 0x78) >> 3); // x1111xxx
    return i_month;
}

static inline void desc69_set_month(uint8_t *p_desc, uint8_t i_month)
{
    i_month &= 0x0f; // 4 bits
    p_desc[3] = (p_desc[3] & 0x87) | (i_month << 3); // x1111xxx
}


static inline uint8_t desc69_get_hour(const uint8_t *p_desc)
{
    uint8_t i_hour = ((p_desc[3] & 0x07) << 2) | ((p_desc[4] & 0xc0) >> 6); // xxxxx111 11xxxxxx
    return i_hour;
}

static inline void desc69_set_hour(uint8_t *p_desc, uint8_t i_hour)
{
    i_hour &= 0x1f; // 5 bits
    p_desc[3] = (p_desc[3] & 0xf8) | ((i_hour >> 3) & 0x07); // xxxxx111
    p_desc[4] = ((i_hour & 0x03) << 6) | (p_desc[4] & 0x3f); // 11xxxxxx
}

static inline uint8_t desc69_get_minute(const uint8_t *p_desc)
{
    uint8_t i_min = p_desc[4] & 0x3f; // xx111111
    return i_min;
}

static inline void desc69_set_minute(uint8_t *p_desc, uint8_t i_minute)
{
    i_minute &= 0x3f;
    p_desc[4] = (p_desc[4] & 0xc0) | i_minute;
}

static inline bool desc69_validate(const uint8_t *p_desc)
{
    return desc_get_length(p_desc) >= (DESC69_HEADER_SIZE - DESC_HEADER_SIZE);
}

static inline void desc69_print(const uint8_t *p_desc, f_print pf_print,
                                void *opaque, print_type_t i_print_type)
{
    switch (i_print_type) {
    case PRINT_XML:
        pf_print(opaque,
                 "<PDC_DESC pil=\"0x%x\" day=\"%u\" month=\"%u\" hour=\"%u\" min=\"%u\"/>",
                 desc69_get_pil(p_desc),
                 desc69_get_day(p_desc),
                 desc69_get_month(p_desc),
                 desc69_get_hour(p_desc),
                 desc69_get_minute(p_desc)
                );
        break;
    default:
        pf_print(opaque,
                 "    - desc 69 pdc pil=\"0x%x\" day=\"%u\" month=\"%u\" hour=\"%u\" min=\"%u\"",
                 desc69_get_pil(p_desc),
                 desc69_get_day(p_desc),
                 desc69_get_month(p_desc),
                 desc69_get_hour(p_desc),
                 desc69_get_minute(p_desc)
                );
    }
}

#ifdef __cplusplus
}
#endif

#endif