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1 /* GStreamer |
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2 * Copyright (C) 2004 Wim Taymans <wim@fluendo.com> |
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3 * |
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4 * gstoggdemux.c: ogg stream demuxer |
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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 #ifndef __GST_OGG_DEMUX_H__ |
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23 #define __GST_OGG_DEMUX_H__ |
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24 |
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25 #include <ogg/ogg.h> |
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26 |
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27 #include <gst/gst.h> |
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28 |
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29 G_BEGIN_DECLS |
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30 |
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31 #define GST_TYPE_OGG_PAD (gst_ogg_pad_get_type()) |
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32 #define GST_OGG_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OGG_PAD, GstOggPad)) |
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33 #define GST_OGG_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OGG_PAD, GstOggPad)) |
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34 #define GST_IS_OGG_PAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OGG_PAD)) |
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35 #define GST_IS_OGG_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OGG_PAD)) |
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36 |
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37 typedef struct _GstOggPad GstOggPad; |
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38 typedef struct _GstOggPadClass GstOggPadClass; |
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39 |
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40 #define GST_TYPE_OGG_DEMUX (gst_ogg_demux_get_type()) |
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41 #define GST_OGG_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OGG_DEMUX, GstOggDemux)) |
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42 #define GST_OGG_DEMUX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OGG_DEMUX, GstOggDemux)) |
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43 #define GST_IS_OGG_DEMUX(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OGG_DEMUX)) |
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44 #define GST_IS_OGG_DEMUX_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OGG_DEMUX)) |
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45 |
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46 static GType gst_ogg_demux_get_type (void); |
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47 |
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48 typedef struct _GstOggDemux GstOggDemux; |
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49 typedef struct _GstOggDemuxClass GstOggDemuxClass; |
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50 typedef struct _GstOggChain GstOggChain; |
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51 |
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52 /* all information needed for one ogg chain (relevant for chained bitstreams) */ |
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53 struct _GstOggChain |
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54 { |
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55 GstOggDemux *ogg; |
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56 |
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57 gint64 offset; /* starting offset of chain */ |
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58 gint64 end_offset; /* end offset of chain */ |
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59 gint64 bytes; /* number of bytes */ |
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60 |
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61 gboolean have_bos; |
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62 |
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63 GArray *streams; |
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64 |
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65 GstClockTime total_time; /* the total time of this chain, this is the MAX of |
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66 the totals of all streams */ |
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67 GstClockTime begin_time; /* when this chain starts in the stream */ |
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68 |
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69 GstClockTime segment_start; /* the timestamp of the first sample, this is the MIN of |
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70 the start times of all streams. */ |
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71 GstClockTime segment_stop; /* the timestamp of the last page, this is the MAX of the |
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72 streams. */ |
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73 }; |
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74 |
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75 /* different modes for the pad */ |
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76 typedef enum |
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77 { |
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78 GST_OGG_PAD_MODE_INIT, /* we are feeding our internal decoder to get info */ |
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79 GST_OGG_PAD_MODE_STREAMING, /* we are streaming buffers to the outside */ |
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80 } GstOggPadMode; |
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81 |
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82 /* all information needed for one ogg stream */ |
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83 struct _GstOggPad |
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84 { |
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85 GstPad pad; /* subclass GstPad */ |
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86 |
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87 gboolean have_type; |
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88 GstOggPadMode mode; |
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89 |
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90 GstPad *elem_pad; /* sinkpad of internal element */ |
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91 GstElement *element; /* internal element */ |
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92 GstPad *elem_out; /* our sinkpad to receive buffers form the internal element */ |
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93 |
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94 GstOggChain *chain; /* the chain we are part of */ |
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95 GstOggDemux *ogg; /* the ogg demuxer we are part of */ |
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96 |
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97 GList *headers; |
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98 |
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99 gboolean is_skeleton; |
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100 gboolean have_fisbone; |
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101 gint64 granulerate_n; |
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102 gint64 granulerate_d; |
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103 guint32 preroll; |
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104 guint granuleshift; |
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105 |
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106 gint serialno; |
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107 gint64 packetno; |
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108 gint64 current_granule; |
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109 |
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110 GstClockTime start_time; /* the timestamp of the first sample */ |
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111 |
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112 gint64 first_granule; /* the granulepos of first page == first sample in next page */ |
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113 GstClockTime first_time; /* the timestamp of the second page or granuletime of first page */ |
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114 |
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115 ogg_stream_state stream; |
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116 GList *continued; |
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117 |
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118 gboolean discont; |
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119 GstFlowReturn last_ret; /* last return of _pad_push() */ |
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120 |
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121 gboolean dynamic; /* True if the internal element had dynamic pads */ |
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122 guint padaddedid; /* The signal id for element::pad-added */ |
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123 }; |
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124 |
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125 struct _GstOggPadClass |
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126 { |
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127 GstPadClass parent_class; |
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128 }; |
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129 |
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130 #define GST_CHAIN_LOCK(ogg) g_mutex_lock((ogg)->chain_lock) |
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131 #define GST_CHAIN_UNLOCK(ogg) g_mutex_unlock((ogg)->chain_lock) |
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132 |
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133 /** |
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134 * GstOggDemux: |
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135 * |
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136 * The ogg demuxer object structure. |
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137 */ |
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138 struct _GstOggDemux |
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139 { |
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140 GstElement element; |
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141 |
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142 GstPad *sinkpad; |
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143 |
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144 gint64 length; |
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145 gint64 offset; |
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146 |
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147 gboolean seekable; |
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148 gboolean running; |
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149 |
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150 gboolean need_chains; |
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151 |
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152 /* state */ |
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153 GMutex *chain_lock; /* we need the lock to protect the chains */ |
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154 GArray *chains; /* list of chains we know */ |
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155 GstClockTime total_time; |
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156 |
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157 GstOggChain *current_chain; |
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158 GstOggChain *building_chain; |
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159 |
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160 /* playback start/stop positions */ |
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161 GstSegment segment; |
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162 gboolean segment_running; |
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163 |
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164 GstEvent *event; |
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165 GstEvent *newsegment; /* pending newsegment to be sent from _loop */ |
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166 |
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167 gint64 current_granule; |
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168 |
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169 /* annodex stuff */ |
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170 gboolean have_fishead; |
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171 gint64 basetime; |
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172 |
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173 /* ogg stuff */ |
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174 ogg_sync_state sync; |
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175 }; |
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176 |
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177 struct _GstOggDemuxClass |
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178 { |
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179 GstElementClass parent_class; |
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180 }; |
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181 |
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182 G_END_DECLS |
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183 |
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184 #endif /* __GST_OGG_DEMUX_H__ */ |