[4266] | 1 | //ltm.c: |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010 |
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| 5 | * |
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| 6 | * This file is part of libroar a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * libroar is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with this software; see the file COPYING. If not, write to |
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| 21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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| 23 | * |
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| 24 | * NOTE for everyone want's to change something and send patches: |
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| 25 | * read README and HACKING! There a addition information on |
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| 26 | * the license of this document you need to read before you send |
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| 27 | * any patches. |
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| 28 | * |
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| 29 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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| 30 | * or libpulse*: |
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| 31 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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| 32 | * and are therefore GPL. Because of this it may be illigal to use |
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| 33 | * them with any software that uses libesd, libartsc or libpulse*. |
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| 34 | */ |
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| 35 | |
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| 36 | #include "libroar.h" |
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| 37 | |
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[4269] | 38 | static int roar_ltm_numbits(int f) { |
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| 39 | int found = 0; |
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| 40 | |
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| 41 | while (f) { |
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| 42 | if ( f & 0x1 ) |
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| 43 | found++; |
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| 44 | |
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| 45 | f >>= 1; |
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| 46 | } |
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| 47 | |
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| 48 | return found; |
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| 49 | } |
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| 50 | |
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| 51 | static int roar_ltm_pack_req(int mt, int window, |
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| 52 | int * streams, size_t slen, |
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| 53 | struct roar_message * mes, char ** buf, |
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| 54 | int regtype) { |
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| 55 | uint16_t * data; |
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| 56 | size_t i; |
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| 57 | |
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| 58 | if ( mt == 0 || streams == NULL || slen == 0 || mes == NULL || buf == NULL ) { |
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| 59 | roar_errno = ROAR_ERROR_INVAL; |
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| 60 | return -1; |
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| 61 | } |
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| 62 | |
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| 63 | memset(mes, 0, sizeof(struct roar_message)); |
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| 64 | |
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| 65 | switch (regtype) { |
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| 66 | case ROAR_LTM_SST_REGISTER: |
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| 67 | case ROAR_LTM_SST_UNREGISTER: |
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| 68 | mes->cmd = ROAR_CMD_SET_STREAM_PARA; |
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| 69 | break; |
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| 70 | case ROAR_LTM_SST_GET_RAW: |
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| 71 | mes->cmd = ROAR_CMD_GET_STREAM_PARA; |
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| 72 | break; |
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| 73 | default: |
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| 74 | roar_errno = ROAR_ERROR_NOTSUP; |
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| 75 | return -1; |
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| 76 | break; |
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| 77 | } |
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| 78 | |
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| 79 | if ( slen == 1 ) { |
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| 80 | mes->stream = *streams; |
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| 81 | mes->datalen = 6 * 2; |
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| 82 | } else { |
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| 83 | mes->stream = -1; |
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| 84 | mes->datalen = (6 + slen) * 2; |
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| 85 | } |
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| 86 | |
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| 87 | if ( mes->datalen > LIBROAR_BUFFER_MSGDATA ) { |
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| 88 | roar_errno = ROAR_ERROR_NOTSUP; |
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| 89 | return -1; |
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| 90 | } |
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| 91 | |
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| 92 | *buf = NULL; |
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| 93 | |
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| 94 | data = (uint16_t*)mes->data; |
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| 95 | |
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| 96 | data[0] = 0; |
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| 97 | data[1] = ROAR_STREAM_PARA_LTM; |
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| 98 | data[2] = regtype; |
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| 99 | data[3] = window; |
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| 100 | data[4] = 0; |
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| 101 | data[5] = mt; |
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| 102 | |
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| 103 | for (i = 0; i < slen; i++) { |
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| 104 | data[6+i] = streams[i]; |
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| 105 | } |
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| 106 | |
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| 107 | for (i = 0; i < (mes->datalen/2); i++) { |
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| 108 | data[i] = ROAR_HOST2NET16(data[i]); |
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| 109 | } |
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| 110 | |
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| 111 | return 0; |
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| 112 | } |
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| 113 | |
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| 114 | static int roar_ltm_regunreg(struct roar_connection * con, int mt, int window, int * streams, size_t slen, int type) { |
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| 115 | struct roar_message mes; |
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| 116 | char * buf = NULL; |
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| 117 | int ret; |
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| 118 | |
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| 119 | if ( roar_ltm_pack_req(mt, window, streams, slen, &mes, &buf, type) == -1 ) |
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| 120 | return -1; |
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| 121 | |
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| 122 | ret = roar_req(con, &mes, &buf); |
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| 123 | |
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| 124 | if ( buf != NULL ) |
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| 125 | free(buf); |
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| 126 | |
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| 127 | if ( ret != -1 ) { |
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| 128 | if ( mes.cmd != ROAR_CMD_OK ) |
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| 129 | ret = -1; |
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| 130 | } |
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| 131 | |
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| 132 | return ret; |
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| 133 | } |
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| 134 | |
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| 135 | int roar_ltm_register(struct roar_connection * con, int mt, int window, int * streams, size_t slen) { |
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| 136 | return roar_ltm_regunreg(con, mt, window, streams, slen, ROAR_LTM_SST_REGISTER); |
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| 137 | } |
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| 138 | int roar_ltm_unregister(struct roar_connection * con, int mt, int window, int * streams, size_t slen) { |
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| 139 | return roar_ltm_regunreg(con, mt, window, streams, slen, ROAR_LTM_SST_UNREGISTER); |
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| 140 | } |
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| 141 | |
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| 142 | ssize_t roar_ltm_get_raw(struct roar_connection * con, |
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| 143 | int mt, int window, |
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| 144 | int * streams, size_t slen, |
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| 145 | void * buf, size_t * buflen, int64_t ** array) { |
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| 146 | int bits = roar_ltm_numbits(mt); |
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| 147 | int64_t * buffer = buf; |
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| 148 | size_t i; |
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| 149 | |
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| 150 | if ( buflen == NULL ) { |
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| 151 | roar_errno = ROAR_ERROR_INVAL; |
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| 152 | return -1; |
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| 153 | } |
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| 154 | |
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| 155 | if ( slen == 0 ) { |
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| 156 | *buflen = 0; |
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| 157 | return bits; |
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| 158 | } |
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| 159 | |
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| 160 | if ( con == NULL || streams == NULL || buf == NULL || array == NULL ) { |
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| 161 | roar_errno = ROAR_ERROR_INVAL; |
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| 162 | return -1; |
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| 163 | } |
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| 164 | |
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| 165 | if ( *buflen < (bits * slen) ) { |
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| 166 | roar_errno = ROAR_ERROR_INVAL; |
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| 167 | return -1; |
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| 168 | } |
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| 169 | |
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| 170 | for (i = 0; i < slen; i++) { |
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| 171 | array[i] = &(buffer[bits*i]); |
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| 172 | } |
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| 173 | |
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| 174 | roar_errno = ROAR_ERROR_NOSYS; |
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| 175 | return -1; |
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| 176 | } |
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| 177 | |
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| 178 | int64_t roar_ltm_extract(int64_t * buf, size_t len, int mt, int req) { |
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| 179 | int have, need; |
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| 180 | |
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| 181 | roar_err_clear(); |
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| 182 | |
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| 183 | have = roar_ltm_numbits(req); |
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| 184 | |
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| 185 | need = roar_ltm_numbits(mt); |
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| 186 | |
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| 187 | if ( have != 1 || (mt & req) != req || len != (size_t)need || buf == NULL ) { |
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| 188 | roar_errno = ROAR_ERROR_INVAL; |
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| 189 | return 0; |
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| 190 | } |
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| 191 | |
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| 192 | while (req && (req & 0x1) == 0) { |
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| 193 | if ( mt & 0x1 ) |
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| 194 | buf++; |
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| 195 | |
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| 196 | mt <<= 1; |
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| 197 | req <<= 1; |
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| 198 | } |
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| 199 | |
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| 200 | return *buf; |
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| 201 | } |
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| 202 | |
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| 203 | int64_t roar_ltm_extract1(int64_t * buf, size_t len, int mt, int req) { |
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| 204 | roar_err_clear(); |
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| 205 | |
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| 206 | if ( buf == NULL || len != 1 || mt != req ) { |
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| 207 | roar_errno = ROAR_ERROR_INVAL; |
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| 208 | return 0; |
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| 209 | } |
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| 210 | |
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| 211 | return *buf; |
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| 212 | } |
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| 213 | |
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[4266] | 214 | //ll |
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