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 - 2010-2013 |
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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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38 | struct roar_ltm_result { |
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39 | int mt; |
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40 | int window; |
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41 | size_t streams; |
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42 | size_t nummt; |
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43 | size_t structlen; |
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44 | int64_t data[1]; |
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45 | }; |
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46 | |
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47 | static int roar_ltm_numbits(int f) { |
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48 | int found = 0; |
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49 | |
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50 | while (f) { |
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51 | if ( f & 0x1 ) |
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52 | found++; |
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53 | |
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54 | f >>= 1; |
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55 | } |
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56 | |
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57 | return found; |
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58 | } |
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59 | |
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60 | static int roar_ltm_pack_req(int mt, int window, |
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61 | int * streams, size_t slen, |
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62 | struct roar_message * mes, char ** buf, |
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63 | int regtype) { |
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64 | uint16_t * data; |
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65 | size_t i; |
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66 | |
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67 | if ( mt == 0 ) { |
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68 | roar_err_set(ROAR_ERROR_INVAL); |
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69 | return -1; |
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70 | } |
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71 | |
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72 | if ( streams == NULL || slen == 0 || mes == NULL || buf == NULL ) { |
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73 | roar_err_set(ROAR_ERROR_FAULT); |
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74 | return -1; |
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75 | } |
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76 | |
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77 | memset(mes, 0, sizeof(struct roar_message)); |
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78 | |
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79 | switch (regtype) { |
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80 | case ROAR_LTM_SST_REGISTER: |
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81 | case ROAR_LTM_SST_UNREGISTER: |
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82 | mes->cmd = ROAR_CMD_SET_STREAM_PARA; |
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83 | break; |
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84 | case ROAR_LTM_SST_GET_RAW: |
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85 | mes->cmd = ROAR_CMD_GET_STREAM_PARA; |
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86 | break; |
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87 | default: |
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88 | roar_err_set(ROAR_ERROR_NOTSUP); |
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89 | return -1; |
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90 | break; |
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91 | } |
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92 | |
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93 | if ( slen == 1 ) { |
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94 | mes->stream = *streams; |
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95 | mes->datalen = 6 * 2; |
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96 | } else { |
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97 | mes->stream = -1; |
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98 | mes->datalen = (6 + slen) * 2; |
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99 | } |
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100 | |
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101 | if ( mes->datalen > LIBROAR_BUFFER_MSGDATA ) { |
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102 | roar_err_set(ROAR_ERROR_NOTSUP); |
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103 | return -1; |
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104 | } |
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105 | |
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106 | *buf = NULL; |
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107 | |
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108 | data = (uint16_t*)mes->data; |
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109 | |
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110 | data[0] = 0; |
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111 | data[1] = ROAR_STREAM_PARA_LTM; |
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112 | data[2] = regtype; |
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113 | data[3] = window; |
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114 | data[4] = 0; |
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115 | data[5] = mt; |
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116 | |
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117 | for (i = 0; i < slen; i++) { |
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118 | data[6+i] = streams[i]; |
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119 | } |
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120 | |
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121 | for (i = 0; i < (mes->datalen/2); i++) { |
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122 | data[i] = ROAR_HOST2NET16(data[i]); |
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123 | } |
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124 | |
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125 | return 0; |
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126 | } |
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127 | |
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128 | static int roar_ltm_regunreg(struct roar_connection * con, int mt, int window, int * streams, size_t slen, int type) { |
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129 | struct roar_message mes; |
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130 | char * buf = NULL; |
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131 | int ret; |
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132 | |
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133 | if ( roar_ltm_pack_req(mt, window, streams, slen, &mes, &buf, type) == -1 ) |
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134 | return -1; |
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135 | |
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136 | ret = roar_req(con, &mes, &buf); |
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137 | |
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138 | if ( buf != NULL ) |
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139 | roar_mm_free(buf); |
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140 | |
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141 | if ( ret != -1 ) { |
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142 | if ( mes.cmd != ROAR_CMD_OK ) |
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143 | ret = -1; |
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144 | } |
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145 | |
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146 | return ret; |
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147 | } |
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148 | |
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149 | int roar_ltm_register(struct roar_connection * con, int mt, int window, int * streams, size_t slen) { |
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150 | return roar_ltm_regunreg(con, mt, window, streams, slen, ROAR_LTM_SST_REGISTER); |
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151 | } |
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152 | int roar_ltm_unregister(struct roar_connection * con, int mt, int window, int * streams, size_t slen) { |
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153 | return roar_ltm_regunreg(con, mt, window, streams, slen, ROAR_LTM_SST_UNREGISTER); |
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154 | } |
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155 | |
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156 | |
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157 | #ifdef DEBUG |
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158 | #define HEXDUMP64(x) roar_ltm_hexdump64((x)) |
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159 | static void roar_ltm_hexdump64(void * p) { |
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160 | unsigned char * d = p; |
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161 | ROAR_DBG("roar_ltm_hexdump64(p=%p): hex: %.2x%.2x %.2x%.2x %.2x%.2x %.2x%.2x", p, d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7]); |
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162 | } |
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163 | #else |
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164 | #define HEXDUMP64(x) |
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165 | #endif |
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166 | |
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167 | struct roar_ltm_result * roar_ltm_get(struct roar_connection * con, |
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168 | int mt, int window, |
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169 | int * streams, size_t slen, |
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170 | struct roar_ltm_result * oldresult) { |
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171 | struct roar_ltm_result * res = NULL; |
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172 | struct roar_message mes; |
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173 | size_t needed_structlen = 0; |
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174 | int64_t * d64; |
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175 | char * buf = NULL; |
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176 | int ret; |
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177 | size_t i; |
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178 | |
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179 | if ( con == NULL ) { |
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180 | roar_err_set(ROAR_ERROR_FAULT); |
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181 | return NULL; |
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182 | } |
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183 | |
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184 | if ( streams == NULL || slen == 0 ) { |
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185 | roar_err_set(ROAR_ERROR_FAULT); |
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186 | return NULL; |
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187 | } |
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188 | |
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189 | if ( roar_ltm_pack_req(mt, window, streams, slen, &mes, &buf, ROAR_LTM_SST_GET_RAW) == -1 ) |
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190 | return NULL; |
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191 | |
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192 | ret = roar_req(con, &mes, &buf); |
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193 | |
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194 | if ( ret == -1 || mes.cmd != ROAR_CMD_OK ) { |
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195 | if ( buf != NULL ) |
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196 | roar_mm_free(buf); |
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197 | return NULL; |
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198 | } |
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199 | |
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200 | if ( buf == NULL ) { |
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201 | d64 = ( int64_t*)&(mes.data); |
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202 | } else { |
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203 | d64 = ( int64_t*)buf; |
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204 | } |
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205 | |
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206 | |
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207 | for (i = 0; i < mes.datalen/8; i++) { |
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208 | ROAR_DBG("roar_ltm_get(*): d64[i=%i]=%lli", i, (long long int)d64[i]); |
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209 | HEXDUMP64(&(d64[i])); |
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210 | d64[i] = ROAR_NET2HOST64(d64[i]); |
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211 | HEXDUMP64(&(d64[i])); |
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212 | ROAR_DBG("roar_ltm_get(*): d64[i=%i]=%lli", i, (long long int)d64[i]); |
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213 | } |
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214 | |
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215 | needed_structlen = sizeof(struct roar_ltm_result) + mes.datalen; |
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216 | |
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217 | if ( oldresult != NULL ) { |
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218 | if ( oldresult->structlen >= needed_structlen ) { |
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219 | res = oldresult; |
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220 | needed_structlen = oldresult->structlen; |
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221 | } else { |
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222 | roar_ltm_freeres(oldresult); |
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223 | } |
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224 | } else { |
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225 | res = roar_mm_malloc(needed_structlen); |
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226 | } |
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227 | |
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228 | if ( res == NULL ) { |
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229 | if ( buf != NULL ) |
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230 | roar_mm_free(buf); |
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231 | return NULL; |
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232 | } |
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233 | |
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234 | memset(res, 0, needed_structlen); |
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235 | res->structlen = needed_structlen; |
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236 | |
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237 | res->mt = mt; |
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238 | res->window = window; |
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239 | res->streams = slen; |
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240 | res->nummt = roar_ltm_numbits(mt); |
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241 | |
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242 | memcpy(res->data, d64, mes.datalen); |
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243 | |
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244 | if ( buf != NULL ) |
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245 | roar_mm_free(buf); |
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246 | return res; |
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247 | } |
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248 | |
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249 | #define _CKNULL(x) if ( (x) == NULL ) { roar_err_set(ROAR_ERROR_FAULT); return -1; } |
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250 | #define _RETMEMBERCKED(x,m) _CKNULL(x) return (x)->m |
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251 | |
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252 | int roar_ltm_get_numstreams(struct roar_ltm_result * res) { |
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253 | _RETMEMBERCKED(res, streams); |
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254 | } |
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255 | int roar_ltm_get_mt(struct roar_ltm_result * res) { |
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256 | _RETMEMBERCKED(res, mt); |
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257 | } |
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258 | int roar_ltm_get_window(struct roar_ltm_result * res) { |
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259 | _RETMEMBERCKED(res, window); |
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260 | } |
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261 | |
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262 | static int64_t * roar_ltm_get_streamptr(struct roar_ltm_result * res, size_t streamidx) { |
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263 | int64_t * ptr; |
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264 | int numchans; |
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265 | size_t i; |
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266 | |
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267 | ROAR_DBG("roar_ltm_get_streamptr(res=%p, streamidx=%i) = ?", res, streamidx); |
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268 | |
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269 | if ( res == NULL || streamidx >= res->streams ) { |
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270 | roar_err_set(ROAR_ERROR_FAULT); |
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271 | return NULL; |
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272 | } |
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273 | |
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274 | ptr = res->data; |
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275 | |
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276 | ROAR_DBG("roar_ltm_get_streamptr(res=%p, streamidx=%i): res->data=%p", res, streamidx, res->data); |
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277 | |
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278 | for (i = 0; i < streamidx; i++) { |
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279 | numchans = *ptr & 0xFFFF; |
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280 | |
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281 | ROAR_DBG("roar_ltm_get_streamptr(res=%p, streamidx=%i): i=%i, numchans=%i", res, streamidx, i, numchans); |
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282 | |
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283 | ptr += res->nummt * numchans; |
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284 | ptr++; |
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285 | } |
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286 | |
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287 | ROAR_DBG("roar_ltm_get_streamptr(res=%p, streamidx=%i) = %p", res, streamidx, ptr); |
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288 | return ptr; |
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289 | } |
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290 | |
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291 | int roar_ltm_get_numchans(struct roar_ltm_result * res, size_t streamidx) { |
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292 | int64_t * ptr = roar_ltm_get_streamptr(res, streamidx); |
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293 | |
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294 | if ( ptr == NULL ) |
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295 | return -1; |
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296 | |
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297 | return *ptr & 0xFFFF; |
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298 | } |
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299 | |
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300 | int64_t roar_ltm_extract(struct roar_ltm_result * res, int mt, size_t streamidx, int channel) { |
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301 | int64_t * ptr = roar_ltm_get_streamptr(res, streamidx); |
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302 | int numchans; |
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303 | int resmt; |
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304 | |
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305 | ROAR_DBG("roar_ltm_extract(res=%p, mt=0x%.4x, streamidx=%i, channel=%i) = ?", res, mt, streamidx, channel); |
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306 | |
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307 | if ( roar_ltm_numbits(mt) != 1 ) { |
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308 | roar_err_set(ROAR_ERROR_INVAL); |
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309 | return -1; |
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310 | } |
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311 | |
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312 | ROAR_DBG("roar_ltm_extract(res=%p, mt=0x%.4x, streamidx=%i, channel=%i) = ?", res, mt, streamidx, channel); |
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313 | |
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314 | if ( ptr == NULL ) |
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315 | return -1; |
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316 | |
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317 | numchans = *ptr & 0xFFFF; |
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318 | |
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319 | ROAR_DBG("roar_ltm_extract(res=%p, mt=0x%.4x, streamidx=%i, channel=%i): numchans=%i", res, mt, streamidx, channel, numchans); |
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320 | |
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321 | if ( channel >= numchans ) { |
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322 | roar_err_set(ROAR_ERROR_RANGE); |
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323 | return -1; |
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324 | } |
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325 | |
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326 | ptr++; |
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327 | |
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328 | ptr += res->nummt * channel; |
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329 | |
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330 | // now ptr points to the first mt for the given channel. |
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331 | |
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332 | resmt = res->mt; |
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333 | |
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334 | while (!(mt & 0x1)) { |
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335 | if ( resmt & 0x1 ) |
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336 | ptr++; |
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337 | mt >>= 1; |
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338 | resmt >>= 1; |
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339 | } |
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340 | |
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341 | ROAR_DBG("roar_ltm_extract(res=%p, mt=?, streamidx=%i, channel=%i): ptr=%p", res, streamidx, channel, ptr); |
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342 | ROAR_DBG("roar_ltm_extract(res=%p, mt=?, streamidx=%i, channel=%i) = %lli", res, streamidx, channel, (long long int)*ptr); |
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343 | |
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344 | return *ptr; |
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345 | } |
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346 | |
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347 | //ll |
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