1 | /* GStreamer |
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2 | * Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de> |
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3 | * |
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4 | * gsttag.h: Header for tag support |
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5 | * |
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6 | * This library is free software; you can redistribute it and/or |
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7 | * modify it under the terms of the GNU Library General Public |
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8 | * License as published by the Free Software Foundation; either |
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9 | * version 2 of the License, or (at your option) any later version. |
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10 | * |
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11 | * This library is distributed in the hope that it will be useful, |
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 | * Library General Public License for more details. |
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15 | * |
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16 | * You should have received a copy of the GNU Library General Public |
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17 | * License along with this library; if not, write to the |
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18 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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19 | * Boston, MA 02111-1307, USA. |
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20 | */ |
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21 | |
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22 | |
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23 | #ifndef __GST_TAG_H__ |
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24 | #define __GST_TAG_H__ |
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25 | |
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26 | #include <gst/gststructure.h> |
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27 | #include <gst/gstevent.h> |
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28 | |
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29 | G_BEGIN_DECLS |
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30 | |
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31 | typedef enum { |
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32 | GST_TAG_MERGE_UNDEFINED, |
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33 | GST_TAG_MERGE_REPLACE_ALL, |
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34 | GST_TAG_MERGE_REPLACE, |
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35 | GST_TAG_MERGE_APPEND, |
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36 | GST_TAG_MERGE_PREPEND, |
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37 | GST_TAG_MERGE_KEEP, |
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38 | GST_TAG_MERGE_KEEP_ALL, |
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39 | /* add more */ |
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40 | GST_TAG_MERGE_COUNT |
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41 | } GstTagMergeMode; |
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42 | #define GST_TAG_MODE_IS_VALID(mode) (((mode) > GST_TAG_MERGE_UNDEFINED) && ((mode) < GST_TAG_MERGE_COUNT)) |
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43 | |
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44 | typedef enum { |
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45 | GST_TAG_FLAG_UNDEFINED, |
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46 | GST_TAG_FLAG_META, |
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47 | GST_TAG_FLAG_ENCODED, |
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48 | GST_TAG_FLAG_DECODED, |
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49 | GST_TAG_FLAG_COUNT |
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50 | } GstTagFlag; |
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51 | #define GST_TAG_FLAG_IS_VALID(flag) (((flag) > GST_TAG_FLAG_UNDEFINED) && ((flag) < GST_TAG_FLAG_COUNT)) |
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52 | |
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53 | typedef GstStructure GstTagList; |
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54 | #define GST_TAG_LIST(x) ((GstTagList *) (x)) |
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55 | #define GST_IS_TAG_LIST(x) (gst_is_tag_list (GST_TAG_LIST (x))) |
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56 | #define GST_TYPE_TAG_LIST (gst_tag_list_get_type ()) |
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57 | |
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58 | typedef void (* GstTagForeachFunc) (const GstTagList *list, const gchar *tag, gpointer user_data); |
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59 | typedef void (* GstTagMergeFunc) (GValue *dest, const GValue *src); |
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60 | |
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61 | /* initialize tagging system */ |
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62 | void _gst_tag_initialize (void); |
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63 | GType gst_tag_list_get_type (void); |
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64 | |
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65 | void gst_tag_register (const gchar * name, |
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66 | GstTagFlag flag, |
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67 | GType type, |
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68 | const gchar * nick, |
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69 | const gchar * blurb, |
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70 | GstTagMergeFunc func); |
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71 | /* some default merging functions */ |
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72 | void gst_tag_merge_use_first (GValue * dest, |
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73 | const GValue * src); |
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74 | void gst_tag_merge_strings_with_comma (GValue * dest, |
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75 | const GValue * src); |
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76 | |
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77 | /* basic tag support */ |
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78 | gboolean gst_tag_exists (const gchar * tag); |
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79 | GType gst_tag_get_type (const gchar * tag); |
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80 | G_CONST_RETURN gchar * |
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81 | gst_tag_get_nick (const gchar * tag); |
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82 | G_CONST_RETURN gchar * |
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83 | gst_tag_get_description (const gchar * tag); |
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84 | GstTagFlag gst_tag_get_flag (const gchar * tag); |
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85 | gboolean gst_tag_is_fixed (const gchar * tag); |
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86 | |
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87 | /* tag lists */ |
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88 | GstTagList * gst_tag_list_new (void); |
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89 | gboolean gst_is_tag_list (gconstpointer p); |
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90 | GstTagList * gst_tag_list_copy (const GstTagList * list); |
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91 | void gst_tag_list_insert (GstTagList * into, |
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92 | const GstTagList * from, |
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93 | GstTagMergeMode mode); |
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94 | GstTagList * gst_tag_list_merge (const GstTagList * list1, |
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95 | const GstTagList * list2, |
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96 | GstTagMergeMode mode); |
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97 | void gst_tag_list_free (GstTagList * list); |
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98 | guint gst_tag_list_get_tag_size (const GstTagList * list, |
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99 | const gchar * tag); |
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100 | void gst_tag_list_add (GstTagList * list, |
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101 | GstTagMergeMode mode, |
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102 | const gchar * tag, |
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103 | ...); |
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104 | void gst_tag_list_add_values (GstTagList * list, |
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105 | GstTagMergeMode mode, |
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106 | const gchar * tag, |
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107 | ...); |
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108 | void gst_tag_list_add_valist (GstTagList * list, |
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109 | GstTagMergeMode mode, |
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110 | const gchar * tag, |
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111 | va_list var_args); |
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112 | void gst_tag_list_add_valist_values (GstTagList * list, |
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113 | GstTagMergeMode mode, |
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114 | const gchar * tag, |
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115 | va_list var_args); |
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116 | void gst_tag_list_remove_tag (GstTagList * list, |
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117 | const gchar * tag); |
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118 | void gst_tag_list_foreach (GstTagList * list, |
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119 | GstTagForeachFunc func, |
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120 | gpointer user_data); |
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121 | |
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122 | G_CONST_RETURN GValue * |
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123 | gst_tag_list_get_value_index (const GstTagList * list, |
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124 | const gchar * tag, |
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125 | guint index); |
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126 | gboolean gst_tag_list_copy_value (GValue * dest, |
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127 | const GstTagList * list, |
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128 | const gchar * tag); |
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129 | |
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130 | /* simplifications (FIXME: do we want them?) */ |
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131 | gboolean gst_tag_list_get_char (const GstTagList * list, |
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132 | const gchar * tag, |
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133 | gchar * value); |
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134 | gboolean gst_tag_list_get_char_index (const GstTagList * list, |
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135 | const gchar * tag, |
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136 | guint index, |
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137 | gchar * value); |
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138 | gboolean gst_tag_list_get_uchar (const GstTagList * list, |
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139 | const gchar * tag, |
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140 | guchar * value); |
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141 | gboolean gst_tag_list_get_uchar_index (const GstTagList * list, |
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142 | const gchar * tag, |
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143 | guint index, |
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144 | guchar * value); |
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145 | gboolean gst_tag_list_get_boolean (const GstTagList * list, |
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146 | const gchar * tag, |
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147 | gboolean * value); |
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148 | gboolean gst_tag_list_get_boolean_index (const GstTagList * list, |
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149 | const gchar * tag, |
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150 | guint index, |
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151 | gboolean * value); |
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152 | gboolean gst_tag_list_get_int (const GstTagList * list, |
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153 | const gchar * tag, |
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154 | gint * value); |
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155 | gboolean gst_tag_list_get_int_index (const GstTagList * list, |
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156 | const gchar * tag, |
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157 | guint index, |
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158 | gint * value); |
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159 | gboolean gst_tag_list_get_uint (const GstTagList * list, |
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160 | const gchar * tag, |
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161 | guint * value); |
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162 | gboolean gst_tag_list_get_uint_index (const GstTagList * list, |
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163 | const gchar * tag, |
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164 | guint index, |
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165 | guint * value); |
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166 | gboolean gst_tag_list_get_long (const GstTagList * list, |
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167 | const gchar * tag, |
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168 | glong * value); |
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169 | gboolean gst_tag_list_get_long_index (const GstTagList * list, |
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170 | const gchar * tag, |
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171 | guint index, |
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172 | glong * value); |
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173 | gboolean gst_tag_list_get_ulong (const GstTagList * list, |
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174 | const gchar * tag, |
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175 | gulong * value); |
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176 | gboolean gst_tag_list_get_ulong_index (const GstTagList * list, |
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177 | const gchar * tag, |
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178 | guint index, |
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179 | gulong * value); |
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180 | gboolean gst_tag_list_get_int64 (const GstTagList * list, |
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181 | const gchar * tag, |
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182 | gint64 * value); |
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183 | gboolean gst_tag_list_get_int64_index (const GstTagList * list, |
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184 | const gchar * tag, |
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185 | guint index, |
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186 | gint64 * value); |
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187 | gboolean gst_tag_list_get_uint64 (const GstTagList * list, |
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188 | const gchar * tag, |
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189 | guint64 * value); |
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190 | gboolean gst_tag_list_get_uint64_index (const GstTagList * list, |
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191 | const gchar * tag, |
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192 | guint index, |
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193 | guint64 * value); |
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194 | gboolean gst_tag_list_get_float (const GstTagList * list, |
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195 | const gchar * tag, |
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196 | gfloat * value); |
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197 | gboolean gst_tag_list_get_float_index (const GstTagList * list, |
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198 | const gchar * tag, |
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199 | guint index, |
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200 | gfloat * value); |
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201 | gboolean gst_tag_list_get_double (const GstTagList * list, |
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202 | const gchar * tag, |
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203 | gdouble * value); |
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204 | gboolean gst_tag_list_get_double_index (const GstTagList * list, |
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205 | const gchar * tag, |
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206 | guint index, |
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207 | gdouble * value); |
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208 | gboolean gst_tag_list_get_string (const GstTagList * list, |
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209 | const gchar * tag, |
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210 | gchar ** value); |
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211 | gboolean gst_tag_list_get_string_index (const GstTagList * list, |
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212 | const gchar * tag, |
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213 | guint index, |
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214 | gchar ** value); |
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215 | gboolean gst_tag_list_get_pointer (const GstTagList * list, |
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216 | const gchar * tag, |
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217 | gpointer * value); |
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218 | gboolean gst_tag_list_get_pointer_index (const GstTagList * list, |
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219 | const gchar * tag, |
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220 | guint index, |
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221 | gpointer * value); |
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222 | |
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223 | /* tag events */ |
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224 | GstEvent * gst_event_new_tag (GstTagList * list); |
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225 | GstTagList * gst_event_tag_get_list (GstEvent * tag_event); |
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226 | |
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227 | |
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228 | /* GStreamer core tags (need to be discussed) */ |
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229 | /** |
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230 | * GST_TAG_TITLE: |
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231 | * |
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232 | * commonly used title |
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233 | */ |
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234 | #define GST_TAG_TITLE "title" |
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235 | /** |
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236 | * GST_TAG_ARTIST: |
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237 | * |
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238 | * person(s) responsible for the recording |
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239 | */ |
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240 | #define GST_TAG_ARTIST "artist" |
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241 | /** |
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242 | * GST_TAG_ALBUM: |
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243 | * |
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244 | * album containing this data |
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245 | */ |
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246 | #define GST_TAG_ALBUM "album" |
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247 | /** |
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248 | * GST_TAG_DATE: |
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249 | * |
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250 | * date the data was created (in Julian calendar days) |
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251 | */ |
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252 | #define GST_TAG_DATE "date" |
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253 | /** |
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254 | * GST_TAG_GENRE: |
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255 | * |
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256 | * genre this data belongs to |
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257 | */ |
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258 | #define GST_TAG_GENRE "genre" |
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259 | /** |
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260 | * GST_TAG_COMMENT: |
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261 | * |
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262 | * free text commenting the data |
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263 | */ |
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264 | #define GST_TAG_COMMENT "comment" |
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265 | /** |
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266 | * GST_TAG_TRACK_NUMBER: |
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267 | * |
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268 | * track number inside a collection |
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269 | */ |
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270 | #define GST_TAG_TRACK_NUMBER "track-number" |
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271 | /** |
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272 | * GST_TAG_TRACK_COUNT: |
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273 | * |
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274 | * count of tracks inside collection this track belongs to |
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275 | */ |
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276 | #define GST_TAG_TRACK_COUNT "track-count" |
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277 | /** |
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278 | * GST_TAG_ALBUM_VOLUME_NUMBER: |
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279 | * |
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280 | * disc number inside a collection |
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281 | */ |
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282 | #define GST_TAG_ALBUM_VOLUME_NUMBER "album-disc-number" |
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283 | /** |
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284 | * GST_TAG_ALBUM_VOLUME_COUNT: |
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285 | * |
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286 | * count of discs inside collection this disc belongs to |
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287 | */ |
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288 | #define GST_TAG_ALBUM_VOLUME_COUNT "album-disc-count" |
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289 | /** |
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290 | * GST_TAG_LOCATION: |
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291 | * |
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292 | * original location of file as a URI |
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293 | */ |
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294 | #define GST_TAG_LOCATION "location" |
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295 | /** |
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296 | * GST_TAG_DESCRIPTION: |
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297 | * |
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298 | * short text describing the content of the data |
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299 | */ |
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300 | #define GST_TAG_DESCRIPTION "description" |
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301 | /** |
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302 | * GST_TAG_VERSION: |
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303 | * |
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304 | * version of this data |
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305 | */ |
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306 | #define GST_TAG_VERSION "version" |
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307 | /** |
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308 | * GST_TAG_ISRC: |
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309 | * |
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310 | * International Standard Recording Code - see http://www.ifpi.org/isrc/ |
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311 | */ |
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312 | #define GST_TAG_ISRC "isrc" |
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313 | /** |
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314 | * GST_TAG_ORGANIZATION: |
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315 | * |
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316 | * organization |
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317 | */ |
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318 | #define GST_TAG_ORGANIZATION "organization" |
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319 | /** |
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320 | * GST_TAG_COPYRIGHT: |
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321 | * |
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322 | * copyright notice of the data |
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323 | */ |
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324 | #define GST_TAG_COPYRIGHT "copyright" |
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325 | /** |
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326 | * GST_TAG_CONTACT: |
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327 | * |
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328 | * contact information |
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329 | */ |
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330 | #define GST_TAG_CONTACT "contact" |
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331 | /** |
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332 | * GST_TAG_LICENSE: |
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333 | * |
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334 | * license of data |
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335 | */ |
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336 | #define GST_TAG_LICENSE "license" |
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337 | /** |
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338 | * GST_TAG_PERFORMER: |
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339 | * |
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340 | * person(s) performing |
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341 | */ |
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342 | #define GST_TAG_PERFORMER "performer" |
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343 | /** |
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344 | * GST_TAG_DURATION: |
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345 | * |
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346 | * length in GStreamer time units (nanoseconds) |
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347 | */ |
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348 | #define GST_TAG_DURATION "duration" |
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349 | /** |
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350 | * GST_TAG_CODEC: |
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351 | * |
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352 | * codec the data is stored in |
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353 | */ |
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354 | #define GST_TAG_CODEC "codec" |
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355 | /** |
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356 | * GST_TAG_VIDEO_CODEC: |
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357 | * |
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358 | * codec the video data is stored in |
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359 | */ |
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360 | #define GST_TAG_VIDEO_CODEC "video-codec" |
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361 | /** |
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362 | * GST_TAG_AUDIO_CODEC: |
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363 | * |
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364 | * codec the audio data is stored in |
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365 | */ |
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366 | #define GST_TAG_AUDIO_CODEC "audio-codec" |
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367 | /** |
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368 | * GST_TAG_BITRATE: |
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369 | * |
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370 | * exact or average bitrate in bits/s |
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371 | */ |
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372 | #define GST_TAG_BITRATE "bitrate" |
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373 | /** |
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374 | * GST_TAG_NOMINAL_BITRATE: |
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375 | * |
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376 | * nominal bitrate in bits/s |
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377 | */ |
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378 | #define GST_TAG_NOMINAL_BITRATE "nominal-bitrate" |
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379 | /** |
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380 | * GST_TAG_MINIMUM_BITRATE: |
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381 | * |
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382 | * minimum bitrate in bits/s |
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383 | */ |
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384 | #define GST_TAG_MINIMUM_BITRATE "minimum-bitrate" |
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385 | /** |
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386 | * GST_TAG_MAXIMUM_BITRATE: |
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387 | * |
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388 | * maximum bitrate in bits/s |
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389 | */ |
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390 | #define GST_TAG_MAXIMUM_BITRATE "maximum-bitrate" |
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391 | /** |
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392 | * GST_TAG_SERIAL: |
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393 | * |
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394 | * serial number of track |
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395 | */ |
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396 | #define GST_TAG_SERIAL "serial" |
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397 | /** |
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398 | * GST_TAG_ENCODER: |
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399 | * |
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400 | * encoder used to encode this stream |
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401 | */ |
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402 | #define GST_TAG_ENCODER "encoder" |
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403 | /** |
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404 | * GST_TAG_ENCODER_VERSION: |
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405 | * |
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406 | * version of the encoder used to encode this stream |
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407 | */ |
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408 | #define GST_TAG_ENCODER_VERSION "encoder-version" |
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409 | /** |
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410 | * GST_TAG_TRACK_GAIN: |
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411 | * |
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412 | * track gain in db |
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413 | */ |
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414 | #define GST_TAG_TRACK_GAIN "replaygain-track-gain" |
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415 | /** |
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416 | * GST_TAG_TRACK_PEAK: |
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417 | * |
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418 | * peak of the track |
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419 | */ |
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420 | #define GST_TAG_TRACK_PEAK "replaygain-track-peak" |
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421 | /** |
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422 | * GST_TAG_ALBUM_GAIN: |
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423 | * |
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424 | * album gain in db |
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425 | */ |
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426 | #define GST_TAG_ALBUM_GAIN "replaygain-album-gain" |
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427 | /** |
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428 | * GST_TAG_ALBUM_PEAK: |
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429 | * |
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430 | * peak of the album |
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431 | */ |
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432 | #define GST_TAG_ALBUM_PEAK "replaygain-album-peak" |
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433 | |
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434 | G_END_DECLS |
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435 | |
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436 | #endif /* __GST_EVENT_H__ */ |
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