1 /*****************************************************************************
2 * dr_0f.c
3 * Copyright (C) 2001-2011 VideoLAN
4 * $Id: dr_0f.c,v 1.3 2003/07/25 20:20:40 fenrir Exp $
5 *
6 * Authors: Arnaud de Bossoreille de Ribou <bozo@via.ecp.fr>
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 *
22 *****************************************************************************/
23
24 #include "config.h"
25
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <stdbool.h>
29 #include <string.h>
30
31 #if defined(HAVE_INTTYPES_H)
32 #include <inttypes.h>
33 #elif defined(HAVE_STDINT_H)
34 #include <stdint.h>
35 #endif
36
37 #include "../dvbpsi.h"
38 #include "../dvbpsi_private.h"
39 #include "../descriptor.h"
40
41 #include "dr_0f.h"
42
43
44 /*****************************************************************************
45 * dvbpsi_DecodePrivateDataDr
46 *****************************************************************************/
dvbpsi_DecodePrivateDataDr(dvbpsi_descriptor_t * p_descriptor)47 dvbpsi_private_data_dr_t * dvbpsi_DecodePrivateDataDr(
48 dvbpsi_descriptor_t * p_descriptor)
49 {
50 dvbpsi_private_data_dr_t * p_decoded;
51
52 /* Check the tag */
53 if (!dvbpsi_CanDecodeAsDescriptor(p_descriptor, 0x0f))
54 return NULL;
55
56 /* Don't decode twice */
57 if (dvbpsi_IsDescriptorDecoded(p_descriptor))
58 return p_descriptor->p_decoded;
59
60 if (p_descriptor->i_length != 4)
61 return NULL;
62
63 /* Allocate memory */
64 p_decoded = (dvbpsi_private_data_dr_t*)malloc(sizeof(dvbpsi_private_data_dr_t));
65 if (!p_decoded)
66 return NULL;
67
68 p_decoded->i_private_data = ((uint32_t)(p_descriptor->p_data[0]) << 24)
69 | ((uint32_t)(p_descriptor->p_data[1]) << 16)
70 | ((uint32_t)(p_descriptor->p_data[2]) << 8)
71 | p_descriptor->p_data[3];
72
73 p_descriptor->p_decoded = (void*)p_decoded;
74
75 return p_decoded;
76 }
77
78
79 /*****************************************************************************
80 * dvbpsi_GenPrivateDataDr
81 *****************************************************************************/
dvbpsi_GenPrivateDataDr(dvbpsi_private_data_dr_t * p_decoded,bool b_duplicate)82 dvbpsi_descriptor_t * dvbpsi_GenPrivateDataDr(
83 dvbpsi_private_data_dr_t * p_decoded,
84 bool b_duplicate)
85 {
86 /* Create the descriptor */
87 dvbpsi_descriptor_t * p_descriptor = dvbpsi_NewDescriptor(0x0f, 4, NULL);
88 if (!p_descriptor)
89 return NULL;
90
91 /* Encode data */
92 p_descriptor->p_data[0] = p_decoded->i_private_data >> 24;
93 p_descriptor->p_data[1] = p_decoded->i_private_data >> 16;
94 p_descriptor->p_data[2] = p_decoded->i_private_data >> 8;
95 p_descriptor->p_data[3] = p_decoded->i_private_data;
96
97 if (b_duplicate)
98 {
99 /* Duplicate decoded data */
100 p_descriptor->p_decoded =
101 dvbpsi_DuplicateDecodedDescriptor(p_decoded,
102 sizeof(dvbpsi_private_data_dr_t));
103 }
104
105 return p_descriptor;
106 }
107