1 /* GStreamer |
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2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> |
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3 * Copyright (C) <2006> Nokia Corporation (contact <stefan.kost@nokia.com>) |
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4 * |
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5 * This library is free software; you can redistribute it and/or |
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6 * modify it under the terms of the GNU Library General Public |
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7 * License as published by the Free Software Foundation; either |
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8 * version 2 of the License, or (at your option) any later version. |
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9 * |
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10 * This library is distributed in the hope that it will be useful, |
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 * Library General Public License for more details. |
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14 * |
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15 * You should have received a copy of the GNU Library General Public |
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16 * License along with this library; if not, write to the |
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17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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18 * Boston, MA 02111-1307, USA. |
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19 */ |
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20 |
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21 #ifndef __GST_AVI_DEMUX_H__ |
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22 #define __GST_AVI_DEMUX_H__ |
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23 |
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24 #include <gst/gst.h> |
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25 |
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26 #include "avi-ids.h" |
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27 #include "gst/riff/riff-ids.h" |
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28 #include "gst/riff/riff-read.h" |
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29 #include <gst/base/gstadapter.h> |
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30 |
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31 G_BEGIN_DECLS |
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32 |
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33 #define GST_TYPE_AVI_DEMUX \ |
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34 (gst_avi_demux_get_type ()) |
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35 #define GST_AVI_DEMUX(obj) \ |
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36 (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AVI_DEMUX, GstAviDemux)) |
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37 #define GST_AVI_DEMUX_CLASS(klass) \ |
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38 (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AVI_DEMUX, GstAviDemuxClass)) |
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39 #define GST_IS_AVI_DEMUX(obj) \ |
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40 (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AVI_DEMUX)) |
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41 #define GST_IS_AVI_DEMUX_CLASS(klass) \ |
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42 (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AVI_DEMUX)) |
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43 |
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44 #define GST_AVI_DEMUX_MAX_STREAMS 16 |
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45 |
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46 #define CHUNKID_TO_STREAMNR(chunkid) \ |
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47 ((((chunkid) & 0xff) - '0') * 10 + \ |
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48 (((chunkid) >> 8) & 0xff) - '0') |
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49 |
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50 #define GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME 1 |
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51 |
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52 /* 48 bytes */ |
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53 typedef struct { |
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54 guint index_nr; /* = (entry-index_entries)/sizeof(gst_avi_index_entry); */ |
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55 guchar stream_nr; |
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56 guchar flags; |
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57 guint64 ts; |
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58 guint64 dur; /* =entry[1].ts-entry->ts */ |
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59 guint64 offset; |
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60 guint64 bytes_before; /* calculated */ |
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61 guint32 frames_before; /* calculated */ |
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62 guint32 size; /* could be read from the chunk (if we don't split) */ |
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63 } gst_avi_index_entry; |
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64 |
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65 typedef struct { |
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66 /* index of this streamcontext */ |
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67 guint num; |
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68 |
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69 /* pad*/ |
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70 GstPad *pad; |
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71 |
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72 /* stream info and headers */ |
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73 gst_riff_strh *strh; |
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74 union { |
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75 gst_riff_strf_vids *vids; |
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76 gst_riff_strf_auds *auds; |
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77 gst_riff_strf_iavs *iavs; |
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78 gpointer data; |
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79 } strf; |
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80 GstBuffer *extradata, *initdata; |
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81 gchar *name; |
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82 |
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83 /* current position (byte, frame, time) and other status vars */ |
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84 guint current_frame; |
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85 guint64 current_byte; |
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86 GstFlowReturn last_flow; |
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87 gboolean discont; |
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88 |
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89 /* stream length */ |
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90 guint64 total_bytes; |
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91 guint32 total_frames; |
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92 guint32 total_blocks; |
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93 /* stream length according to index */ |
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94 GstClockTime idx_duration; |
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95 /* stream length according to header */ |
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96 GstClockTime hdr_duration; |
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97 /* stream length based on header/index */ |
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98 GstClockTime duration; |
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99 |
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100 /* VBR indicator */ |
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101 gboolean is_vbr; |
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102 |
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103 /* openDML support (for files >4GB) */ |
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104 gboolean superindex; |
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105 guint64 *indexes; |
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106 |
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107 GstTagList *taglist; |
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108 } avi_stream_context; |
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109 |
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110 typedef enum { |
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111 GST_AVI_DEMUX_START, |
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112 GST_AVI_DEMUX_HEADER, |
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113 GST_AVI_DEMUX_MOVI, |
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114 } GstAviDemuxState; |
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115 |
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116 typedef enum { |
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117 GST_AVI_DEMUX_HEADER_TAG_LIST, |
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118 GST_AVI_DEMUX_HEADER_AVIH, |
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119 GST_AVI_DEMUX_HEADER_ELEMENTS, |
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120 GST_AVI_DEMUX_HEADER_INFO, |
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121 GST_AVI_DEMUX_HEADER_JUNK, |
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122 GST_AVI_DEMUX_HEADER_DATA |
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123 } GstAviDemuxHeaderState; |
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124 |
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125 typedef struct _GstAviDemux { |
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126 GstElement parent; |
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127 |
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128 /* pads */ |
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129 GstPad *sinkpad; |
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130 |
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131 /* AVI decoding state */ |
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132 GstAviDemuxState state; |
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133 GstAviDemuxHeaderState header_state; |
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134 guint64 offset; |
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135 |
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136 /* index */ |
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137 gst_avi_index_entry *index_entries; |
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138 guint index_size; |
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139 guint64 index_offset; |
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140 guint current_entry; |
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141 guint reverse_start_index; |
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142 guint reverse_stop_index; |
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143 |
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144 /* streams */ |
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145 guint num_streams; |
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146 guint num_v_streams; |
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147 guint num_a_streams; |
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148 guint num_t_streams; /* subtitle text streams */ |
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149 |
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150 avi_stream_context stream[GST_AVI_DEMUX_MAX_STREAMS]; |
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151 |
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152 /* for streaming mode */ |
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153 gboolean streaming; |
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154 gboolean have_eos; |
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155 GstAdapter *adapter; |
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156 |
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157 /* some stream info for length */ |
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158 gst_riff_avih *avih; |
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159 |
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160 /* segment in TIME */ |
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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 /* pending tags/events */ |
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165 GstEvent *seek_event; |
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166 GstTagList *globaltags; |
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167 gboolean got_tags; |
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168 |
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169 } GstAviDemux; |
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170 |
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171 typedef struct _GstAviDemuxClass { |
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172 GstElementClass parent_class; |
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173 } GstAviDemuxClass; |
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174 |
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175 GType gst_avi_demux_get_type (void); |
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176 |
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177 G_END_DECLS |
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178 |
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179 #endif /* __GST_AVI_DEMUX_H__ */ |
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