1 | //file.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2011 |
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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 | #define BUFFERSIZE 8192 |
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39 | #define BUFMAX 65536 |
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40 | |
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41 | #ifdef ROAR_HAVE_IO_POSIX |
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42 | #define _CAN_OPERATE |
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43 | #endif |
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44 | |
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45 | int roar_file_codecdetect(char * buf, int len) { |
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46 | int codec = -1; |
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47 | |
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48 | if ( len > 3 ) { |
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49 | if ( strncmp(buf, "OggS", 4) == 0 ) { |
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50 | codec = ROAR_CODEC_OGG_GENERAL; |
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51 | if ( len > 32 ) { // this is 5 bytes after the end of the header |
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52 | if ( strncmp(buf+28, "\177FLAC", 5) == 0 ) { |
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53 | codec = ROAR_CODEC_OGG_FLAC; |
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54 | } else if ( strncmp(buf+28, "Speex", 5) == 0 ) { |
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55 | codec = ROAR_CODEC_OGG_SPEEX; |
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56 | } else if ( len > 34 ) { // this is 7 bytes after the end of the header |
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57 | if ( strncmp(buf+28, "\001vorbis", 7) == 0 ) |
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58 | codec = ROAR_CODEC_OGG_VORBIS; |
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59 | } |
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60 | } |
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61 | } else if ( strncmp(buf, "MThd", 4) == 0 ) { |
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62 | codec = ROAR_CODEC_MIDI_FILE; |
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63 | } else if ( strncmp(buf, "RIFF", 4) == 0 ) { |
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64 | if ( len > 15 ) { |
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65 | if ( strncmp(buf+8, "WAVEfmt ", 8) == 0 ) |
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66 | codec = ROAR_CODEC_RIFF_WAVE; |
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67 | } |
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68 | } else if ( strncmp(buf, "Roar", 4) == 0 ) { |
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69 | if ( len > ROAR_SPEEX_MAGIC_LEN ) { |
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70 | if ( strncmp(buf, ROAR_SPEEX_MAGIC, ROAR_SPEEX_MAGIC_LEN) == 0 ) |
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71 | codec = ROAR_CODEC_ROAR_SPEEX; |
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72 | #if ROAR_SPEEX_MAGIC_LEN < ROAR_CELT_MAGIC_LEN |
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73 | } |
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74 | if ( len > ROAR_CELT_MAGIC_LEN ) { |
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75 | #endif |
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76 | if ( strncmp(buf, ROAR_CELT_MAGIC_0, ROAR_CELT_MAGIC_LEN) == 0 || |
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77 | strncmp(buf, ROAR_CELT_MAGIC_1, ROAR_CELT_MAGIC_LEN) == 0 ) |
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78 | codec = ROAR_CODEC_ROAR_CELT; |
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79 | } |
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80 | } else if ( strncmp(buf, "fLaC", 4) == 0 ) { |
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81 | codec = ROAR_CODEC_FLAC; |
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82 | } else if ( strncmp(buf, ".snd", 4) == 0 ) { |
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83 | codec = ROAR_CODEC_AU; |
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84 | } else if ( len > 7 && strncmp(buf, "RAUM-CF0", 8) == 0 ) { |
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85 | codec = ROAR_CODEC_RAUM; |
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86 | } |
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87 | } |
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88 | |
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89 | return codec; |
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90 | } |
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91 | |
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92 | ssize_t roar_file_send_raw (int out, int in) { |
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93 | #ifdef _CAN_OPERATE |
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94 | ssize_t r = 0; |
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95 | #ifdef ROAR_HAVE_LINUX_SENDFILE |
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96 | ssize_t ret; |
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97 | #endif |
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98 | int len; |
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99 | char buf[BUFFERSIZE]; |
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100 | #if defined(__linux__) && defined(ROAR_HAVE_IPV4) |
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101 | int cork_new = 1, cork_old; |
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102 | socklen_t cork_len = sizeof(int); |
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103 | |
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104 | if ( getsockopt(out, IPPROTO_TCP, TCP_CORK, &cork_old, &cork_len) == -1 ) { |
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105 | cork_old = -1; |
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106 | } else { |
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107 | setsockopt(out, IPPROTO_TCP, TCP_CORK, &cork_new, sizeof(int)); |
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108 | } |
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109 | #endif |
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110 | |
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111 | roar_debug_warn_obsolete("roar_file_send_raw", "roar_vio_copy_data", NULL); |
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112 | |
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113 | #ifdef ROAR_HAVE_LINUX_SENDFILE |
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114 | while ((ret = sendfile(out, in, NULL, BUFMAX)) > 0) |
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115 | r += ret; |
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116 | #endif |
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117 | |
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118 | // TODO: try mmap here! |
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119 | |
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120 | while ((len = read(in, buf, BUFFERSIZE)) > 0) |
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121 | r += write(out, buf, len); |
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122 | |
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123 | #if defined(__linux__) && defined(ROAR_HAVE_IPV4) |
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124 | if ( cork_old != -1 ) |
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125 | setsockopt(out, IPPROTO_TCP, TCP_CORK, &cork_old, cork_len); |
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126 | #endif |
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127 | return r; |
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128 | #else |
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129 | return -1; |
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130 | #endif |
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131 | } |
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132 | |
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133 | ssize_t roar_file_map (char * filename, int flags, mode_t mode, size_t len, void ** mem) { |
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134 | #ifdef ROAR_HAVE_MMAP |
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135 | int fh; |
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136 | int mmap_flags = 0; |
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137 | struct stat stat; |
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138 | |
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139 | roar_debug_warn_obsolete("roar_file_map", NULL, NULL); |
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140 | |
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141 | if ( mem == NULL || filename == NULL ) |
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142 | return -1; |
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143 | |
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144 | *mem = NULL; |
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145 | |
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146 | if ( flags & O_RDWR ) { |
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147 | mmap_flags = PROT_READ|PROT_WRITE; |
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148 | } else if ( flags & O_WRONLY ) { |
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149 | mmap_flags = PROT_WRITE; |
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150 | } else { |
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151 | mmap_flags = PROT_READ; |
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152 | } |
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153 | |
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154 | if ( (fh = open(filename, flags, mode)) == -1 ) { |
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155 | return -1; |
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156 | } |
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157 | |
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158 | if ( fstat(fh, &stat) == -1 ) { |
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159 | close(fh); |
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160 | return -1; |
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161 | } |
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162 | |
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163 | if ( stat.st_size < len ) { |
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164 | if ( ftruncate(fh, len) == -1 ) { |
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165 | close(fh); |
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166 | return -1; |
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167 | } |
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168 | } |
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169 | |
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170 | if ( (*mem = mmap(NULL, len, mmap_flags, MAP_SHARED, fh, 0)) == NULL ) { |
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171 | close(fh); |
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172 | return -1; |
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173 | } |
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174 | |
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175 | close(fh); |
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176 | |
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177 | return len; |
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178 | #else |
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179 | #ifdef ROAR_TARGET_WIN32 |
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180 | ROAR_ERR("roar_file_map(*): There is no support to fast access files via mmap() within win32, download a real OS..."); |
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181 | #endif |
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182 | return -1; |
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183 | #endif |
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184 | } |
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185 | |
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186 | int roar_file_unmap (size_t len, void * mem) { |
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187 | roar_debug_warn_obsolete("roar_file_unmap", NULL, NULL); |
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188 | |
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189 | #ifdef ROAR_HAVE_MMAP |
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190 | return munmap(mem, len); |
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191 | #else |
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192 | #ifdef ROAR_TARGET_WIN32 |
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193 | ROAR_ERR("roar_file_map(*): There is no support to fast access files via mmap() within win32, download a real OS..."); |
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194 | #endif |
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195 | return -1; |
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196 | #endif |
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197 | } |
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198 | |
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199 | |
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200 | char * roar_cdromdevice (void) { |
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201 | char * k; |
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202 | |
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203 | if ( (k = getenv("CDDA_DEVICE")) != NULL ) |
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204 | return k; |
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205 | |
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206 | #ifdef ROAR_DEFAULT_CDROM |
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207 | return ROAR_DEFAULT_CDROM; |
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208 | #endif |
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209 | |
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210 | roar_err_set(ROAR_ERROR_NODEV); |
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211 | return NULL; |
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212 | } |
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213 | |
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214 | //ll |
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