1 | //cdrom.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008 |
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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, 675 Mass Ave, Cambridge, MA 02139, USA. |
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22 | * |
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23 | * NOTE for everyone want's to change something and send patches: |
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24 | * read README and HACKING! There a addition information on |
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25 | * the license of this document you need to read before you send |
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26 | * any patches. |
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27 | * |
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28 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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29 | * or libpulse*: |
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30 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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31 | * and are therefore GPL. Because of this it may be illigal to use |
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32 | * them with any software that uses libesd, libartsc or libpulse*. |
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33 | */ |
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34 | |
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35 | #include "libroar.h" |
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36 | #include <sys/types.h> |
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37 | #include <signal.h> |
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38 | |
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39 | #define ROAR_CDROM_ERROR_NORETURN(format, args...) ROAR_ERR(format, ## args); _exit(3) |
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40 | |
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41 | #if BYTE_ORDER == BIG_ENDIAN |
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42 | #define ROAR_CDROM_CDPARANOIA_OUTPUTFORMAT "--output-raw-big-endian" |
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43 | #elif BYTE_ORDER == LITTLE_ENDIAN |
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44 | #define ROAR_CDROM_CDPARANOIA_OUTPUTFORMAT "--output-raw-little-endian" |
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45 | #endif |
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46 | |
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47 | #ifdef ROAR_TARGET_WIN32 |
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48 | #undef ROAR_HAVE_BIN_CDPARANOIA |
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49 | #endif |
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50 | |
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51 | pid_t roar_cdrom_run_cdparanoia (int cdrom, int data, int track, char * pos) { |
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52 | #if defined(ROAR_HAVE_BIN_CDPARANOIA) && defined(ROAR_CDROM_CDPARANOIA_OUTPUTFORMAT) |
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53 | char my_pos[32] = {0}; |
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54 | pid_t pid; |
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55 | int fh[2]; |
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56 | |
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57 | ROAR_DBG("roar_cdrom_run_cdparanoia(cdrom=%i, data=%i, track=%i, pos='%s') = ?", cdrom, data, track, pos); |
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58 | |
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59 | if ( cdrom == -1 || data == -1 || (track == -1 && pos == NULL) || (track != -1 && pos != NULL) ) |
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60 | return -1; |
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61 | |
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62 | if ( track != -1 ) { |
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63 | pos = my_pos; |
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64 | snprintf(pos, 32, "%i", track); |
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65 | } |
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66 | |
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67 | if ( (pid = fork()) == -1 ) { |
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68 | return -1; |
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69 | } |
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70 | |
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71 | if ( pid ) |
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72 | return pid; |
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73 | |
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74 | fh[0] = dup(cdrom); |
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75 | fh[1] = dup(data); |
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76 | |
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77 | if ( fh[0] == -1 || fh[1] == -1 ) { |
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78 | ROAR_CDROM_ERROR_NORETURN("Can not dup(): %s", strerror(errno)); |
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79 | } |
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80 | |
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81 | close(ROAR_STDIN); |
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82 | close(ROAR_STDOUT); |
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83 | |
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84 | // TODO: should I close some other handles? |
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85 | |
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86 | if ( dup2(fh[0], ROAR_STDIN) == -1 || dup2(fh[1], ROAR_STDOUT) == -1 ) { |
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87 | ROAR_CDROM_ERROR_NORETURN("Can not dup2(): %s", strerror(errno)); |
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88 | } |
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89 | |
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90 | // new close our backups: |
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91 | close(fh[0]); |
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92 | close(fh[1]); |
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93 | |
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94 | execl(ROAR_HAVE_BIN_CDPARANOIA, "cdparanoia", "--force-cdrom-device", "/dev/stdin", "-q", |
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95 | ROAR_CDROM_CDPARANOIA_OUTPUTFORMAT, pos, "-", NULL); |
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96 | |
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97 | ROAR_CDROM_ERROR_NORETURN("We are still alive after exec()!, very bad!, error was: %s", strerror(errno)); |
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98 | return -1; |
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99 | #else |
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100 | #ifndef ROAR_HAVE_BIN_CDPARANOIA |
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101 | ROAR_ERR("roar_cdrom_run_cdparanoia(*): ROAR_HAVE_BIN_CDPARANOIA not defined!"); |
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102 | #endif |
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103 | #ifndef ROAR_CDROM_CDPARANOIA_OUTPUTFORMAT |
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104 | ROAR_ERR("roar_cdrom_run_cdparanoia(*): ROAR_CDROM_CDPARANOIA_OUTPUTFORMAT not defined!"); |
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105 | #endif |
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106 | ROAR_ERR("roar_cdrom_run_cdparanoia(cdrom=%i, data=%i, track=%i, pos='%s') = -1 // no cdparanoia support compiled in", |
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107 | cdrom, data, track, pos); |
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108 | return -1; |
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109 | #endif |
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110 | } |
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111 | |
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112 | int roar_cdrom_open (struct roar_connection * con, struct roar_cdrom * cdrom, char * device) { |
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113 | int flags; |
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114 | |
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115 | if ( cdrom == NULL ) |
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116 | return -1; |
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117 | |
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118 | memset((void*)cdrom, 0, sizeof(struct roar_cdrom)); |
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119 | |
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120 | if ( device == NULL ) |
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121 | device = roar_cdromdevice(); |
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122 | |
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123 | if ( device == NULL ) |
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124 | return -1; |
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125 | |
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126 | strncpy(cdrom->device, device, ROAR_CDROM_MAX_DEVLEN); |
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127 | |
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128 | cdrom->con = con; // we do not care here if it is set or not as we can operate in local only mode |
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129 | |
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130 | cdrom->stream = -1; |
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131 | cdrom->play_local = 1; |
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132 | cdrom->player = -1; |
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133 | |
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134 | if ( (cdrom->fh = open(cdrom->device, O_RDONLY, 0644)) == -1 ) |
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135 | return -1; |
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136 | |
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137 | #ifndef ROAR_TARGET_WIN32 |
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138 | if ( (flags = fcntl(cdrom->fh, F_GETFL, 0)) == -1 ) { |
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139 | close(cdrom->fh); |
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140 | cdrom->fh = -1; |
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141 | return -1; |
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142 | } |
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143 | |
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144 | flags |= FD_CLOEXEC; |
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145 | |
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146 | if ( fcntl(cdrom->fh, F_SETFL, flags) == -1 ) { |
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147 | close(cdrom->fh); |
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148 | cdrom->fh = -1; |
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149 | return -1; |
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150 | } |
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151 | #endif |
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152 | |
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153 | return 0; |
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154 | } |
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155 | |
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156 | int roar_cdrom_close(struct roar_cdrom * cdrom) { |
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157 | if ( cdrom == NULL ) |
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158 | return -1; |
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159 | |
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160 | roar_cdrom_stop(cdrom); // stop on close |
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161 | |
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162 | if ( cdrom->fh != -1 ) |
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163 | close(cdrom->fh); |
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164 | |
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165 | memset((void*)cdrom, 0, sizeof(struct roar_cdrom)); |
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166 | |
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167 | return 0; |
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168 | } |
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169 | |
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170 | int roar_cdrom_stop (struct roar_cdrom * cdrom) { |
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171 | int ret; |
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172 | |
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173 | if ( cdrom == NULL ) |
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174 | return -1; |
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175 | |
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176 | if ( cdrom->con == NULL ) |
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177 | return -1; |
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178 | |
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179 | if ( cdrom->stream == -1 ) |
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180 | return -1; |
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181 | |
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182 | if ( (ret = roar_kick(cdrom->con, ROAR_OT_STREAM, cdrom->stream)) == -1 ) { |
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183 | return -1; |
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184 | } |
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185 | |
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186 | #ifndef ROAR_TARGET_WIN32 |
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187 | if ( cdrom->player != -1 ) |
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188 | kill(cdrom->player, SIGINT); |
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189 | #else |
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190 | if ( cdrom->player != -1 ) { |
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191 | ROAR_ERR("roar_cdrom_stop(*): Can not kill player with pid %i, not supported on win32", cdrom->player); |
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192 | } |
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193 | #endif |
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194 | |
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195 | cdrom->player = -1; |
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196 | cdrom->stream = -1; |
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197 | |
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198 | return ret; |
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199 | } |
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200 | |
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201 | int roar_cdrom_play (struct roar_cdrom * cdrom, int track) { |
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202 | int stream_fh; |
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203 | struct roar_stream stream[1]; |
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204 | |
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205 | if ( cdrom == NULL ) |
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206 | return -1; |
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207 | |
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208 | if ( cdrom->con == NULL ) |
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209 | return -1; |
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210 | |
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211 | if ( cdrom->stream != -1 ) { |
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212 | if ( roar_cdrom_stop(cdrom) == -1 ) |
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213 | return -1; |
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214 | } |
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215 | |
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216 | if ( cdrom->play_local ) { |
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217 | |
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218 | if ( (stream_fh = roar_simple_new_stream_obj(cdrom->con, stream, ROAR_CDROM_STREAMINFO, ROAR_DIR_PLAY)) == -1 ) { |
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219 | return -1; |
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220 | } |
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221 | |
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222 | if ( (cdrom->player = roar_cdrom_run_cdparanoia(cdrom->fh, stream_fh, track, NULL)) != -1 ) { |
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223 | cdrom->stream = stream->id; |
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224 | return 0; |
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225 | } |
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226 | |
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227 | close(stream_fh); |
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228 | |
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229 | return -1; |
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230 | } else { |
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231 | // no support for remote playback yet |
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232 | return -1; |
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233 | } |
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234 | } |
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235 | |
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236 | //ll |
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