1 | //file.c: |
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2 | |
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3 | #include "libroar.h" |
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4 | |
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5 | #define BUFSIZE 8192 |
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6 | #define BUFMAX 65536 |
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7 | |
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8 | int roar_file_codecdetect(char * buf, int len) { |
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9 | int codec = -1; |
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10 | |
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11 | if ( len > 3 ) { |
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12 | if ( strncmp(buf, "OggS", 4) == 0 ) { |
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13 | codec = ROAR_CODEC_OGG_GENERAL; |
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14 | if ( len > 34 ) { // this is 7 bytes after the end of the header |
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15 | if ( strncmp(buf+28, "\001vorbis", 7) == 0 ) |
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16 | codec = ROAR_CODEC_OGG_VORBIS; |
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17 | } |
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18 | } else if ( strncmp(buf, "MThd", 4) == 0 ) { |
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19 | codec = ROAR_CODEC_MIDI_FILE; |
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20 | } else if ( strncmp(buf, "RIFF", 4) == 0 ) { |
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21 | if ( len > 15 ) { |
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22 | if ( strncmp(buf+8, "WAVEfmt ", 8) == 0 ) |
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23 | codec = ROAR_CODEC_RIFF_WAVE; |
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24 | } |
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25 | } else if ( strncmp(buf, "Roar", 4) == 0 ) { |
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26 | if ( len > ROAR_SPEEX_MAGIC_LEN ) { |
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27 | if ( strncmp(buf, ROAR_SPEEX_MAGIC, ROAR_SPEEX_MAGIC_LEN) == 0 ) |
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28 | codec = ROAR_CODEC_ROAR_SPEEX; |
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29 | #if ROAR_SPEEX_MAGIC_LEN < ROAR_CELT_MAGIC_LEN |
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30 | } |
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31 | if ( len > ROAR_CELT_MAGIC_LEN ) { |
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32 | #endif |
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33 | if ( strncmp(buf, ROAR_CELT_MAGIC, ROAR_CELT_MAGIC_LEN) == 0 ) |
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34 | codec = ROAR_CODEC_ROAR_CELT; |
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35 | } |
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36 | } |
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37 | } |
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38 | |
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39 | return codec; |
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40 | } |
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41 | |
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42 | ssize_t roar_file_send_raw (int out, int in) { |
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43 | ssize_t r = 0; |
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44 | ssize_t ret; |
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45 | int len; |
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46 | char buf[BUFSIZE]; |
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47 | #ifdef __linux__ |
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48 | int cork_new = 1, cork_old; |
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49 | socklen_t cork_len = sizeof(int); |
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50 | |
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51 | if ( getsockopt(out, IPPROTO_TCP, TCP_CORK, &cork_old, &cork_len) == -1 ) { |
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52 | cork_old = -1; |
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53 | } else { |
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54 | setsockopt(out, IPPROTO_TCP, TCP_CORK, &cork_new, sizeof(int)); |
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55 | } |
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56 | #endif |
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57 | |
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58 | #ifdef ROAR_HAVE_LINUX_SENDFILE |
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59 | while ((ret = sendfile(out, in, NULL, BUFMAX)) > 0) |
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60 | r += ret; |
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61 | #endif |
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62 | |
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63 | // TODO: try mmap here! |
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64 | |
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65 | while ((len = read(in, buf, BUFSIZE)) > 0) |
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66 | r += write(out, buf, len); |
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67 | |
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68 | #ifdef __linux__ |
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69 | if ( cork_old != -1 ) |
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70 | setsockopt(out, IPPROTO_TCP, TCP_CORK, &cork_old, cork_len); |
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71 | #endif |
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72 | return r; |
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73 | } |
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74 | |
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75 | ssize_t roar_file_map (char * filename, int flags, mode_t mode, size_t len, void ** mem) { |
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76 | int fh; |
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77 | int mmap_flags = 0; |
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78 | struct stat stat; |
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79 | |
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80 | if ( mem == NULL || filename == NULL ) |
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81 | return -1; |
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82 | |
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83 | *mem = NULL; |
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84 | |
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85 | if ( flags & O_RDWR ) { |
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86 | mmap_flags = PROT_READ|PROT_WRITE; |
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87 | } else if ( flags & O_WRONLY ) { |
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88 | mmap_flags = PROT_WRITE; |
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89 | } else { |
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90 | mmap_flags = PROT_READ; |
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91 | } |
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92 | |
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93 | if ( (fh = open(filename, flags, mode)) == -1 ) { |
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94 | return -1; |
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95 | } |
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96 | |
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97 | if ( fstat(fh, &stat) == -1 ) { |
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98 | close(fh); |
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99 | return -1; |
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100 | } |
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101 | |
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102 | if ( stat.st_size < len ) { |
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103 | if ( ftruncate(fh, len) == -1 ) { |
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104 | close(fh); |
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105 | return -1; |
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106 | } |
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107 | } |
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108 | |
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109 | if ( (*mem = mmap(NULL, len, mmap_flags, MAP_SHARED, fh, 0)) == NULL ) { |
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110 | close(fh); |
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111 | return -1; |
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112 | } |
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113 | |
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114 | close(fh); |
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115 | |
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116 | return len; |
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117 | } |
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118 | |
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119 | int roar_file_unmap (size_t len, void * mem) { |
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120 | return munmap(mem, len); |
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121 | } |
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122 | |
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123 | |
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124 | ssize_t roar_file_play (struct roar_connection * con, char * file, int exec) { |
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125 | int codec = -1; |
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126 | int in, out = -1; |
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127 | struct roar_stream s; |
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128 | ssize_t r = 0; |
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129 | int len; |
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130 | char buf[BUFSIZE]; |
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131 | int rate = ROAR_RATE_DEFAULT, channels = ROAR_CHANNELS_DEFAULT, bits = ROAR_BITS_DEFAULT; |
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132 | |
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133 | if ( !con ) |
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134 | return -1; |
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135 | |
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136 | if ( !file ) |
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137 | return -1; |
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138 | |
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139 | if ( (in = open(file, O_RDONLY, 0644)) == -1 ) { |
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140 | return -1; |
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141 | } |
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142 | |
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143 | if ((len = read(in, buf, BUFSIZE)) < 1) { |
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144 | close(in); |
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145 | return -1; |
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146 | } |
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147 | |
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148 | codec = roar_file_codecdetect(buf, len); |
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149 | |
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150 | if ( codec == -1 ) { |
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151 | close(in); |
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152 | return -1; |
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153 | } |
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154 | |
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155 | if ( exec ) { |
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156 | if ( roar_stream_new(&s, rate, channels, bits, codec) == -1 ) { |
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157 | close(in); |
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158 | return -1; |
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159 | } |
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160 | |
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161 | if ( roar_stream_connect(con, &s, ROAR_DIR_PLAY) == -1 ) { |
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162 | close(in); |
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163 | return -1; |
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164 | } |
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165 | |
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166 | if ( roar_stream_exec(con, &s) == -1 ) { |
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167 | close(in); |
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168 | return -1; |
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169 | } |
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170 | |
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171 | shutdown(con->fh, SHUT_RD); |
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172 | |
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173 | out = con->fh; |
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174 | } else { |
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175 | if ( (out = roar_simple_new_stream(con, rate, channels, bits, codec, ROAR_DIR_PLAY)) == -1 ) { |
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176 | close(in); |
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177 | return -1; |
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178 | } |
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179 | } |
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180 | |
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181 | write(out, buf, len); |
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182 | |
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183 | r = roar_file_send_raw(out, in); |
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184 | |
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185 | close(out); |
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186 | |
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187 | if ( exec ) { |
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188 | con->fh = -1; |
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189 | } |
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190 | |
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191 | close(in); |
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192 | |
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193 | return r; |
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194 | } |
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195 | |
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196 | //ll |
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