1 | //========================================================================= |
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2 | // FILENAME : tagutils-asf.c |
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3 | // DESCRIPTION : ASF (wma/wmv) metadata reader |
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4 | //========================================================================= |
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5 | // Copyright (c) 2008- NETGEAR, Inc. All Rights Reserved. |
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6 | //========================================================================= |
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7 | |
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8 | /* |
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9 | * This program is free software; you can redistribute it and/or modify |
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10 | * it under the terms of the GNU General Public License as published by |
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11 | * the Free Software Foundation; either version 2 of the License, or |
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12 | * (at your option) any later version. |
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13 | * |
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14 | * This program 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 program. If not, see <http://www.gnu.org/licenses/>. |
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21 | */ |
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22 | |
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23 | static int |
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24 | _asf_read_file_properties(FILE *fp, asf_file_properties_t *p, __u32 size) |
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25 | { |
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26 | int len; |
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27 | |
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28 | len = sizeof(*p) - offsetof(asf_file_properties_t, FileID); |
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29 | if(size < len) |
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30 | return -1; |
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31 | |
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32 | memset(p, 0, sizeof(*p)); |
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33 | p->ID = ASF_FileProperties; |
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34 | p->Size = size; |
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35 | |
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36 | if(len != fread(&p->FileID, 1, len, fp)) |
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37 | return -1; |
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38 | |
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39 | return 0; |
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40 | } |
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41 | |
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42 | static void |
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43 | _pick_dlna_profile(struct song_metadata *psong, uint16_t format) |
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44 | { |
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45 | /* DLNA Profile Name */ |
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46 | switch( le16_to_cpu(format) ) |
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47 | { |
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48 | case WMA: |
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49 | if( psong->max_bitrate < 193000 ) |
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50 | asprintf(&(psong->dlna_pn), "WMABASE"); |
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51 | else if( psong->max_bitrate < 385000 ) |
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52 | asprintf(&(psong->dlna_pn), "WMAFULL"); |
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53 | break; |
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54 | case WMAPRO: |
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55 | asprintf(&(psong->dlna_pn), "WMAPRO"); |
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56 | break; |
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57 | case WMALSL: |
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58 | asprintf(&(psong->dlna_pn), "WMALSL%s", |
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59 | psong->channels > 2 ? "_MULT5" : ""); |
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60 | default: |
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61 | break; |
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62 | } |
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63 | } |
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64 | |
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65 | static int |
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66 | _asf_read_audio_stream(FILE *fp, struct song_metadata *psong, int size) |
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67 | { |
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68 | asf_audio_stream_t s; |
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69 | int len; |
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70 | |
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71 | len = sizeof(s) - sizeof(s.Hdr); |
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72 | if(len > size) |
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73 | len = size; |
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74 | |
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75 | if(len != fread(&s.wfx, 1, len, fp)) |
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76 | return -1; |
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77 | |
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78 | psong->channels = le16_to_cpu(s.wfx.nChannels); |
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79 | psong->bitrate = le32_to_cpu(s.wfx.nAvgBytesPerSec) * 8; |
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80 | psong->samplerate = le32_to_cpu(s.wfx.nSamplesPerSec); |
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81 | if (!psong->max_bitrate) |
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82 | psong->max_bitrate = psong->bitrate; |
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83 | _pick_dlna_profile(psong, s.wfx.wFormatTag); |
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84 | |
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85 | return 0; |
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86 | } |
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87 | |
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88 | static int |
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89 | _asf_read_media_stream(FILE *fp, struct song_metadata *psong, __u32 size) |
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90 | { |
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91 | asf_media_stream_t s; |
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92 | avi_audio_format_t wfx; |
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93 | int len; |
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94 | |
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95 | len = sizeof(s) - sizeof(s.Hdr); |
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96 | if(len > size) |
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97 | len = size; |
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98 | |
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99 | if(len != fread(&s.MajorType, 1, len, fp)) |
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100 | return -1; |
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101 | |
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102 | if(IsEqualGUID(&s.MajorType, &ASF_MediaTypeAudio) && |
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103 | IsEqualGUID(&s.FormatType, &ASF_FormatTypeWave) && s.FormatSize >= sizeof(wfx)) |
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104 | { |
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105 | |
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106 | if(sizeof(wfx) != fread(&wfx, 1, sizeof(wfx), fp)) |
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107 | return -1; |
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108 | |
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109 | psong->channels = le16_to_cpu(wfx.nChannels); |
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110 | psong->bitrate = le32_to_cpu(wfx.nAvgBytesPerSec) * 8; |
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111 | psong->samplerate = le32_to_cpu(wfx.nSamplesPerSec); |
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112 | if (!psong->max_bitrate) |
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113 | psong->max_bitrate = psong->bitrate; |
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114 | _pick_dlna_profile(psong, wfx.wFormatTag); |
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115 | } |
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116 | |
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117 | return 0; |
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118 | } |
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119 | |
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120 | static int |
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121 | _asf_read_stream_object(FILE *fp, struct song_metadata *psong, __u32 size) |
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122 | { |
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123 | asf_stream_object_t s; |
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124 | int len; |
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125 | |
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126 | len = sizeof(s) - sizeof(asf_object_t); |
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127 | if(size < len) |
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128 | return -1; |
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129 | |
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130 | if(len != fread(&s.StreamType, 1, len, fp)) |
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131 | return -1; |
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132 | |
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133 | if(IsEqualGUID(&s.StreamType, &ASF_AudioStream)) |
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134 | _asf_read_audio_stream(fp, psong, s.TypeSpecificSize); |
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135 | else if(IsEqualGUID(&s.StreamType, &ASF_StreamBufferStream)) |
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136 | _asf_read_media_stream(fp, psong, s.TypeSpecificSize); |
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137 | else if(!IsEqualGUID(&s.StreamType, &ASF_VideoStream)) |
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138 | { |
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139 | DPRINTF(E_ERROR, L_SCANNER, "Unknown asf stream type.\n"); |
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140 | } |
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141 | |
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142 | return 0; |
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143 | } |
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144 | |
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145 | static int |
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146 | _asf_read_extended_stream_object(FILE *fp, struct song_metadata *psong, __u32 size) |
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147 | { |
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148 | int i, len; |
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149 | long off; |
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150 | asf_object_t tmp; |
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151 | asf_extended_stream_object_t xs; |
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152 | asf_stream_name_t nm; |
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153 | asf_payload_extension_t pe; |
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154 | |
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155 | if(size < sizeof(asf_extended_stream_object_t)) |
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156 | return -1; |
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157 | |
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158 | len = sizeof(xs) - offsetof(asf_extended_stream_object_t, StartTime); |
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159 | if(len != fread(&xs.StartTime, 1, len, fp)) |
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160 | return -1; |
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161 | off = sizeof(xs); |
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162 | |
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163 | for(i = 0; i < xs.StreamNameCount; i++) |
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164 | { |
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165 | if(off + sizeof(nm) > size) |
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166 | return -1; |
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167 | if(sizeof(nm) != fread(&nm, 1, sizeof(nm), fp)) |
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168 | return -1; |
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169 | off += sizeof(nm); |
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170 | if(off + nm.Length > sizeof(asf_extended_stream_object_t)) |
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171 | return -1; |
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172 | if(nm.Length > 0) |
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173 | fseek(fp, nm.Length, SEEK_CUR); |
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174 | off += nm.Length; |
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175 | } |
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176 | |
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177 | for(i = 0; i < xs.PayloadExtensionSystemCount; i++) |
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178 | { |
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179 | if(off + sizeof(pe) > size) |
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180 | return -1; |
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181 | if(sizeof(pe) != fread(&pe, 1, sizeof(pe), fp)) |
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182 | return -1; |
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183 | off += sizeof(pe); |
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184 | if(pe.InfoLength > 0) |
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185 | fseek(fp, pe.InfoLength, SEEK_CUR); |
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186 | off += pe.InfoLength; |
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187 | } |
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188 | |
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189 | if(off < size) |
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190 | { |
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191 | if(sizeof(tmp) != fread(&tmp, 1, sizeof(tmp), fp)) |
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192 | return -1; |
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193 | if(IsEqualGUID(&tmp.ID, &ASF_StreamHeader)) |
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194 | _asf_read_stream_object(fp, psong, tmp.Size); |
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195 | } |
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196 | |
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197 | return 0; |
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198 | } |
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199 | |
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200 | static int |
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201 | _asf_read_header_extension(FILE *fp, struct song_metadata *psong, __u32 size) |
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202 | { |
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203 | off_t pos; |
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204 | long off; |
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205 | asf_header_extension_t ext; |
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206 | asf_object_t tmp; |
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207 | |
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208 | if(size < sizeof(asf_header_extension_t)) |
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209 | return -1; |
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210 | |
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211 | fread(&ext.Reserved1, 1, sizeof(ext.Reserved1), fp); |
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212 | ext.Reserved2 = fget_le16(fp); |
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213 | ext.DataSize = fget_le32(fp); |
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214 | |
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215 | pos = ftell(fp); |
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216 | off = 0; |
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217 | while(off < ext.DataSize) |
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218 | { |
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219 | if(sizeof(asf_header_extension_t) + off > size) |
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220 | break; |
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221 | if(sizeof(tmp) != fread(&tmp, 1, sizeof(tmp), fp)) |
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222 | break; |
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223 | if(off + tmp.Size > ext.DataSize) |
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224 | break; |
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225 | if(IsEqualGUID(&tmp.ID, &ASF_ExtendedStreamPropertiesObject)) |
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226 | _asf_read_extended_stream_object(fp, psong, tmp.Size); |
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227 | |
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228 | off += tmp.Size; |
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229 | fseek(fp, pos + off, SEEK_SET); |
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230 | } |
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231 | |
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232 | return 0; |
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233 | } |
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234 | |
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235 | static int |
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236 | _asf_load_string(FILE *fp, int type, int size, char *buf, int len) |
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237 | { |
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238 | unsigned char data[2048]; |
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239 | __u16 wc; |
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240 | int i, j; |
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241 | __s32 *wd32; |
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242 | __s64 *wd64; |
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243 | __s16 *wd16; |
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244 | |
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245 | i = 0; |
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246 | if(size && (size <= sizeof(data)) && (size == fread(data, 1, size, fp))) |
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247 | { |
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248 | |
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249 | switch(type) |
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250 | { |
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251 | case ASF_VT_UNICODE: |
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252 | for(j = 0; j < size; j += 2) |
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253 | { |
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254 | wc = *(__s16*)&data[j]; |
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255 | i += utf16le_to_utf8(&buf[i], len - i, wc); |
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256 | } |
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257 | break; |
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258 | case ASF_VT_BYTEARRAY: |
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259 | for(i = 0; i < size; i++) |
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260 | { |
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261 | if(i + 1 >= len) |
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262 | break; |
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263 | buf[i] = data[i]; |
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264 | } |
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265 | break; |
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266 | case ASF_VT_BOOL: |
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267 | case ASF_VT_DWORD: |
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268 | if(size >= 4) |
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269 | { |
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270 | wd32 = (__s32 *) &data[0]; |
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271 | i = snprintf(buf, len, "%d", le32_to_cpu(*wd32)); |
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272 | } |
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273 | break; |
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274 | case ASF_VT_QWORD: |
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275 | if(size >= 8) |
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276 | { |
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277 | wd64 = (__s64 *) &data[0]; |
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278 | #if __WORDSIZE == 64 |
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279 | i = snprintf(buf, len, "%ld", le64_to_cpu(*wd64)); |
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280 | #else |
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281 | i = snprintf(buf, len, "%lld", le64_to_cpu(*wd64)); |
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282 | #endif |
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283 | } |
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284 | break; |
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285 | case ASF_VT_WORD: |
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286 | if(size >= 2) |
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287 | { |
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288 | wd16 = (__s16 *) &data[0]; |
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289 | i = snprintf(buf, len, "%d", le16_to_cpu(*wd16)); |
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290 | } |
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291 | break; |
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292 | } |
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293 | |
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294 | size = 0; |
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295 | } |
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296 | else fseek(fp, size, SEEK_CUR); |
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297 | |
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298 | buf[i] = 0; |
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299 | return i; |
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300 | } |
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301 | |
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302 | static void * |
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303 | _asf_load_picture(FILE *fp, int size, void *bm, int *bm_size) |
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304 | { |
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305 | int i; |
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306 | char buf[256]; |
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307 | #if 0 |
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308 | // |
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309 | // Picture type $xx |
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310 | // Data length $xx $xx $xx $xx |
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311 | // MIME type <text string> $00 |
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312 | // Description <text string> $00 |
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313 | // Picture data <binary data> |
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314 | |
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315 | char pic_type; |
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316 | long pic_size; |
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317 | |
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318 | pic_type = fget_byte(fp); size -= 1; |
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319 | pic_size = fget_le32(fp); size -= 4; |
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320 | #else |
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321 | fseek(fp, 5, SEEK_CUR); |
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322 | size -= 5; |
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323 | #endif |
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324 | for(i = 0; i < sizeof(buf) - 1; i++) |
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325 | { |
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326 | buf[i] = fget_le16(fp); size -= 2; |
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327 | if(!buf[i]) |
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328 | break; |
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329 | } |
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330 | buf[i] = '\0'; |
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331 | if(i == sizeof(buf) - 1) |
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332 | { |
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333 | while(fget_le16(fp)) |
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334 | size -= 2; |
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335 | } |
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336 | |
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337 | if(!strcasecmp(buf, "image/jpeg") || |
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338 | !strcasecmp(buf, "image/jpg") || |
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339 | !strcasecmp(buf, "image/peg")) |
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340 | { |
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341 | |
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342 | while(0 != fget_le16(fp)) |
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343 | size -= 2; |
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344 | |
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345 | if(size > 0) |
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346 | { |
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347 | if(!(bm = malloc(size))) |
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348 | { |
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349 | DPRINTF(E_ERROR, L_SCANNER, "Couldn't allocate %d bytes\n", size); |
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350 | } |
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351 | else |
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352 | { |
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353 | *bm_size = size; |
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354 | if(size <= *bm_size) |
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355 | { |
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356 | fread(bm, 1, size, fp); |
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357 | } |
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358 | else |
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359 | { |
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360 | DPRINTF(E_ERROR, L_SCANNER, "Overrun %d bytes required\n", size); |
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361 | free(bm); |
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362 | bm = NULL; |
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363 | } |
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364 | } |
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365 | } |
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366 | else |
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367 | { |
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368 | DPRINTF(E_ERROR, L_SCANNER, "No binary data\n"); |
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369 | size = 0; |
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370 | bm = NULL; |
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371 | } |
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372 | } |
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373 | else |
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374 | { |
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375 | DPRINTF(E_ERROR, L_SCANNER, "Invalid mime type %s\n", buf); |
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376 | } |
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377 | |
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378 | *bm_size = size; |
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379 | return bm; |
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380 | } |
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381 | |
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382 | static int |
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383 | _get_asffileinfo(char *file, struct song_metadata *psong) |
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384 | { |
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385 | FILE *fp; |
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386 | asf_object_t hdr; |
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387 | asf_object_t tmp; |
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388 | unsigned long NumObjects; |
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389 | unsigned short TitleLength; |
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390 | unsigned short AuthorLength; |
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391 | unsigned short CopyrightLength; |
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392 | unsigned short DescriptionLength; |
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393 | unsigned short RatingLength; |
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394 | unsigned short NumEntries; |
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395 | unsigned short NameLength; |
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396 | unsigned short ValueType; |
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397 | unsigned short ValueLength; |
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398 | off_t pos; |
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399 | char buf[2048]; |
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400 | asf_file_properties_t FileProperties; |
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401 | |
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402 | psong->vbr_scale = -1; |
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403 | |
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404 | if(!(fp = fopen(file, "rb"))) |
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405 | { |
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406 | DPRINTF(E_ERROR, L_SCANNER, "Could not open %s for reading\n", file); |
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407 | return -1; |
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408 | } |
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409 | |
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410 | if(sizeof(hdr) != fread(&hdr, 1, sizeof(hdr), fp)) |
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411 | { |
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412 | DPRINTF(E_ERROR, L_SCANNER, "Error reading %s\n", file); |
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413 | fclose(fp); |
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414 | return -1; |
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415 | } |
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416 | hdr.Size = le64_to_cpu(hdr.Size); |
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417 | |
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418 | if(!IsEqualGUID(&hdr.ID, &ASF_HeaderObject)) |
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419 | { |
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420 | DPRINTF(E_ERROR, L_SCANNER, "Not a valid header\n"); |
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421 | fclose(fp); |
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422 | return -1; |
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423 | } |
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424 | NumObjects = fget_le32(fp); |
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425 | fseek(fp, 2, SEEK_CUR); // Reserved le16 |
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426 | |
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427 | pos = ftell(fp); |
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428 | while(NumObjects > 0) |
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429 | { |
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430 | if(sizeof(tmp) != fread(&tmp, 1, sizeof(tmp), fp)) |
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431 | break; |
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432 | tmp.Size = le64_to_cpu(tmp.Size); |
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433 | |
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434 | if(pos + tmp.Size > hdr.Size) |
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435 | { |
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436 | DPRINTF(E_ERROR, L_SCANNER, "Size overrun reading header object %I64x\n", tmp.Size); |
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437 | break; |
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438 | } |
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439 | |
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440 | if(IsEqualGUID(&tmp.ID, &ASF_FileProperties)) |
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441 | { |
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442 | _asf_read_file_properties(fp, &FileProperties, tmp.Size); |
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443 | psong->song_length = le64_to_cpu(FileProperties.PlayDuration) / 10000; |
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444 | psong->bitrate = le64_to_cpu(FileProperties.MaxBitrate); |
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445 | psong->max_bitrate = psong->bitrate; |
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446 | } |
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447 | else if(IsEqualGUID(&tmp.ID, &ASF_ContentDescription)) |
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448 | { |
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449 | TitleLength = fget_le16(fp); |
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450 | AuthorLength = fget_le16(fp); |
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451 | CopyrightLength = fget_le16(fp); |
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452 | DescriptionLength = fget_le16(fp); |
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453 | RatingLength = fget_le16(fp); |
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454 | |
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455 | if(_asf_load_string(fp, ASF_VT_UNICODE, TitleLength, buf, sizeof(buf))) |
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456 | { |
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457 | if(buf[0]) |
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458 | psong->title = strdup(buf); |
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459 | } |
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460 | if(_asf_load_string(fp, ASF_VT_UNICODE, AuthorLength, buf, sizeof(buf))) |
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461 | { |
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462 | if(buf[0]) |
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463 | psong->contributor[ROLE_TRACKARTIST] = strdup(buf); |
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464 | } |
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465 | if(CopyrightLength) |
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466 | fseek(fp, CopyrightLength, SEEK_CUR); |
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467 | if(DescriptionLength) |
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468 | fseek(fp, DescriptionLength, SEEK_CUR); |
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469 | if(RatingLength) |
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470 | fseek(fp, RatingLength, SEEK_CUR); |
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471 | } |
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472 | else if(IsEqualGUID(&tmp.ID, &ASF_ExtendedContentDescription)) |
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473 | { |
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474 | NumEntries = fget_le16(fp); |
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475 | while(NumEntries > 0) |
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476 | { |
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477 | NameLength = fget_le16(fp); |
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478 | _asf_load_string(fp, ASF_VT_UNICODE, NameLength, buf, sizeof(buf)); |
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479 | ValueType = fget_le16(fp); |
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480 | ValueLength = fget_le16(fp); |
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481 | |
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482 | if(!strcasecmp(buf, "AlbumTitle") || !strcasecmp(buf, "WM/AlbumTitle")) |
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483 | { |
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484 | if(_asf_load_string(fp, ValueType, ValueLength, buf, sizeof(buf))) |
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485 | if(buf[0]) |
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486 | psong->album = strdup(buf); |
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487 | } |
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488 | else if(!strcasecmp(buf, "AlbumArtist") || !strcasecmp(buf, "WM/AlbumArtist")) |
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489 | { |
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490 | if(_asf_load_string(fp, ValueType, ValueLength, buf, sizeof(buf))) |
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491 | { |
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492 | if(buf[0]) |
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493 | psong->contributor[ROLE_ALBUMARTIST] = strdup(buf); |
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494 | } |
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495 | } |
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496 | else if(!strcasecmp(buf, "Description") || !strcasecmp(buf, "WM/Track")) |
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497 | { |
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498 | if(_asf_load_string(fp, ValueType, ValueLength, buf, sizeof(buf))) |
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499 | if(buf[0]) |
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500 | psong->track = atoi(buf); |
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501 | } |
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502 | else if(!strcasecmp(buf, "Genre") || !strcasecmp(buf, "WM/Genre")) |
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503 | { |
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504 | if(_asf_load_string(fp, ValueType, ValueLength, buf, sizeof(buf))) |
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505 | if(buf[0]) |
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506 | psong->genre = strdup(buf); |
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507 | } |
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508 | else if(!strcasecmp(buf, "Year") || !strcasecmp(buf, "WM/Year")) |
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509 | { |
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510 | if(_asf_load_string(fp, ValueType, ValueLength, buf, sizeof(buf))) |
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511 | if(buf[0]) |
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512 | psong->year = atoi(buf); |
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513 | } |
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514 | else if(!strcasecmp(buf, "WM/Director")) |
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515 | { |
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516 | if(_asf_load_string(fp, ValueType, ValueLength, buf, sizeof(buf))) |
---|
517 | if(buf[0]) |
---|
518 | psong->contributor[ROLE_CONDUCTOR] = strdup(buf); |
---|
519 | } |
---|
520 | else if(!strcasecmp(buf, "WM/Composer")) |
---|
521 | { |
---|
522 | if(_asf_load_string(fp, ValueType, ValueLength, buf, sizeof(buf))) |
---|
523 | if(buf[0]) |
---|
524 | psong->contributor[ROLE_COMPOSER] = strdup(buf); |
---|
525 | } |
---|
526 | else if(!strcasecmp(buf, "WM/Picture") && (ValueType == ASF_VT_BYTEARRAY)) |
---|
527 | { |
---|
528 | psong->image = _asf_load_picture(fp, ValueLength, psong->image, &psong->image_size); |
---|
529 | } |
---|
530 | else if(!strcasecmp(buf, "TrackNumber") || !strcasecmp(buf, "WM/TrackNumber")) |
---|
531 | { |
---|
532 | if(_asf_load_string(fp, ValueType, ValueLength, buf, sizeof(buf))) |
---|
533 | if(buf[0]) |
---|
534 | psong->track = atoi(buf); |
---|
535 | } |
---|
536 | else if(!strcasecmp(buf, "isVBR")) |
---|
537 | { |
---|
538 | fseek(fp, ValueLength, SEEK_CUR); |
---|
539 | psong->vbr_scale = 0; |
---|
540 | } |
---|
541 | else if(ValueLength) |
---|
542 | { |
---|
543 | fseek(fp, ValueLength, SEEK_CUR); |
---|
544 | } |
---|
545 | NumEntries--; |
---|
546 | } |
---|
547 | } |
---|
548 | else if(IsEqualGUID(&tmp.ID, &ASF_StreamHeader)) |
---|
549 | { |
---|
550 | _asf_read_stream_object(fp, psong, tmp.Size); |
---|
551 | } |
---|
552 | else if(IsEqualGUID(&tmp.ID, &ASF_HeaderExtension)) |
---|
553 | { |
---|
554 | _asf_read_header_extension(fp, psong, tmp.Size); |
---|
555 | } |
---|
556 | pos += tmp.Size; |
---|
557 | fseek(fp, pos, SEEK_SET); |
---|
558 | NumObjects--; |
---|
559 | } |
---|
560 | |
---|
561 | #if 0 |
---|
562 | if(sizeof(hdr) == fread(&hdr, 1, sizeof(hdr), fp) && IsEqualGUID(&hdr.ID, &ASF_DataObject)) |
---|
563 | { |
---|
564 | if(psong->song_length) |
---|
565 | { |
---|
566 | psong->bitrate = (hdr.Size * 8000) / psong->song_length; |
---|
567 | } |
---|
568 | } |
---|
569 | #endif |
---|
570 | |
---|
571 | fclose(fp); |
---|
572 | return 0; |
---|
573 | } |
---|