1 /* GStreamer |
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2 * |
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3 * Copyright (C) 2007 Rene Stadler <mail@renestadler.de> |
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4 * Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org> |
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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 #ifdef HAVE_CONFIG_H |
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23 #include <config.h> |
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24 #endif |
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25 |
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26 #include "gstgiobasesink.h" |
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27 |
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28 GST_DEBUG_CATEGORY_STATIC (gst_gio_base_sink_debug); |
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29 #define GST_CAT_DEFAULT gst_gio_base_sink_debug |
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30 |
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31 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", |
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32 GST_PAD_SINK, |
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33 GST_PAD_ALWAYS, |
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34 GST_STATIC_CAPS_ANY); |
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35 |
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36 GST_BOILERPLATE (GstGioBaseSink, gst_gio_base_sink, GstBaseSink, |
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37 GST_TYPE_BASE_SINK); |
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38 |
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39 static void gst_gio_base_sink_finalize (GObject * object); |
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40 static gboolean gst_gio_base_sink_start (GstBaseSink * base_sink); |
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41 static gboolean gst_gio_base_sink_stop (GstBaseSink * base_sink); |
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42 static gboolean gst_gio_base_sink_unlock (GstBaseSink * base_sink); |
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43 static gboolean gst_gio_base_sink_unlock_stop (GstBaseSink * base_sink); |
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44 static gboolean gst_gio_base_sink_event (GstBaseSink * base_sink, |
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45 GstEvent * event); |
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46 static GstFlowReturn gst_gio_base_sink_render (GstBaseSink * base_sink, |
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47 GstBuffer * buffer); |
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48 static gboolean gst_gio_base_sink_query (GstPad * pad, GstQuery * query); |
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49 |
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50 static void |
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51 gst_gio_base_sink_base_init (gpointer gclass) |
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52 { |
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53 GstElementClass *element_class = GST_ELEMENT_CLASS (gclass); |
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54 |
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55 GST_DEBUG_CATEGORY_INIT (gst_gio_base_sink_debug, "gio_base_sink", 0, |
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56 "GIO base sink"); |
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57 |
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58 gst_element_class_add_pad_template (element_class, |
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59 gst_static_pad_template_get (&sink_factory)); |
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60 } |
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61 |
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62 static void |
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63 gst_gio_base_sink_class_init (GstGioBaseSinkClass * klass) |
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64 { |
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65 GObjectClass *gobject_class; |
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66 GstElementClass *gstelement_class; |
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67 GstBaseSinkClass *gstbasesink_class; |
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68 |
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69 gobject_class = (GObjectClass *) klass; |
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70 gstelement_class = (GstElementClass *) klass; |
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71 gstbasesink_class = (GstBaseSinkClass *) klass; |
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72 |
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73 gobject_class->finalize = gst_gio_base_sink_finalize; |
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74 |
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75 gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_gio_base_sink_start); |
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76 gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_gio_base_sink_stop); |
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77 gstbasesink_class->unlock = GST_DEBUG_FUNCPTR (gst_gio_base_sink_unlock); |
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78 gstbasesink_class->unlock_stop = |
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79 GST_DEBUG_FUNCPTR (gst_gio_base_sink_unlock_stop); |
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80 gstbasesink_class->event = GST_DEBUG_FUNCPTR (gst_gio_base_sink_event); |
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81 gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_gio_base_sink_render); |
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82 } |
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83 |
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84 static void |
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85 gst_gio_base_sink_init (GstGioBaseSink * sink, GstGioBaseSinkClass * gclass) |
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86 { |
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87 gst_pad_set_query_function (GST_BASE_SINK_PAD (sink), |
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88 GST_DEBUG_FUNCPTR (gst_gio_base_sink_query)); |
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89 |
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90 gst_base_sink_set_sync (GST_BASE_SINK (sink), FALSE); |
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91 |
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92 sink->cancel = g_cancellable_new (); |
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93 } |
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94 |
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95 static void |
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96 gst_gio_base_sink_finalize (GObject * object) |
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97 { |
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98 GstGioBaseSink *sink = GST_GIO_BASE_SINK (object); |
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99 |
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100 if (sink->cancel) { |
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101 g_object_unref (sink->cancel); |
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102 sink->cancel = NULL; |
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103 } |
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104 |
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105 if (sink->stream) { |
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106 g_object_unref (sink->stream); |
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107 sink->stream = NULL; |
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108 } |
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109 |
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110 GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object)); |
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111 } |
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112 |
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113 static gboolean |
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114 gst_gio_base_sink_start (GstBaseSink * base_sink) |
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115 { |
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116 GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink); |
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117 |
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118 if (!G_IS_OUTPUT_STREAM (sink->stream)) { |
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119 GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE, (NULL), |
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120 ("No stream given yet")); |
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121 return FALSE; |
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122 } |
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123 |
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124 sink->position = 0; |
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125 |
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126 GST_DEBUG_OBJECT (sink, "started stream"); |
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127 |
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128 return TRUE; |
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129 } |
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130 |
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131 static gboolean |
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132 gst_gio_base_sink_stop (GstBaseSink * base_sink) |
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133 { |
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134 GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink); |
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135 gboolean success; |
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136 GError *err = NULL; |
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137 |
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138 if (G_IS_OUTPUT_STREAM (sink->stream)) { |
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139 GST_DEBUG_OBJECT (sink, "closing stream"); |
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140 |
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141 /* FIXME: can block but unfortunately we can't use async operations |
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142 * here because they require a running main loop */ |
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143 success = g_output_stream_close (sink->stream, sink->cancel, &err); |
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144 |
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145 if (!success && !gst_gio_error (sink, "g_output_stream_close", &err, NULL)) { |
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146 GST_ELEMENT_WARNING (sink, RESOURCE, CLOSE, (NULL), |
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147 ("g_ooutput_stream_close failed: %s", err->message)); |
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148 g_clear_error (&err); |
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149 } else if (!success) { |
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150 GST_ELEMENT_WARNING (sink, RESOURCE, CLOSE, (NULL), |
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151 ("g_output_stream_close failed")); |
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152 } else { |
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153 GST_DEBUG_OBJECT (sink, "g_outut_stream_close succeeded"); |
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154 } |
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155 |
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156 g_object_unref (sink->stream); |
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157 sink->stream = NULL; |
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158 } |
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159 |
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160 return TRUE; |
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161 } |
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162 |
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163 static gboolean |
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164 gst_gio_base_sink_unlock (GstBaseSink * base_sink) |
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165 { |
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166 GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink); |
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167 |
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168 GST_LOG_OBJECT (sink, "triggering cancellation"); |
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169 |
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170 g_cancellable_cancel (sink->cancel); |
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171 |
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172 return TRUE; |
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173 } |
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174 |
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175 static gboolean |
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176 gst_gio_base_sink_unlock_stop (GstBaseSink * base_sink) |
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177 { |
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178 GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink); |
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179 |
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180 GST_LOG_OBJECT (sink, "resetting cancellable"); |
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181 |
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182 g_cancellable_reset (sink->cancel); |
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183 |
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184 return TRUE; |
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185 } |
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186 |
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187 static gboolean |
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188 gst_gio_base_sink_event (GstBaseSink * base_sink, GstEvent * event) |
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189 { |
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190 GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink); |
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191 GstFlowReturn ret = GST_FLOW_OK; |
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192 |
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193 if (sink->stream == NULL) |
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194 return TRUE; |
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195 |
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196 switch (GST_EVENT_TYPE (event)) { |
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197 case GST_EVENT_NEWSEGMENT: |
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198 if (G_IS_OUTPUT_STREAM (sink->stream)) { |
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199 GstFormat format; |
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200 gint64 offset; |
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201 |
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202 gst_event_parse_new_segment (event, NULL, NULL, &format, &offset, NULL, |
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203 NULL); |
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204 |
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205 if (format != GST_FORMAT_BYTES) { |
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206 GST_WARNING_OBJECT (sink, "ignored NEWSEGMENT event in %s format", |
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207 gst_format_get_name (format)); |
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208 break; |
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209 } |
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210 |
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211 if (GST_GIO_STREAM_IS_SEEKABLE (sink->stream)) { |
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212 ret = gst_gio_seek (sink, G_SEEKABLE (sink->stream), offset, |
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213 sink->cancel); |
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214 if (ret == GST_FLOW_OK) |
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215 sink->position = offset; |
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216 } else { |
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217 ret = GST_FLOW_NOT_SUPPORTED; |
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218 } |
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219 } |
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220 break; |
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221 |
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222 case GST_EVENT_EOS: |
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223 case GST_EVENT_FLUSH_START: |
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224 if (G_IS_OUTPUT_STREAM (sink->stream)) { |
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225 gboolean success; |
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226 GError *err = NULL; |
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227 |
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228 success = g_output_stream_flush (sink->stream, sink->cancel, &err); |
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229 |
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230 if (!success && !gst_gio_error (sink, "g_output_stream_flush", &err, |
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231 &ret)) { |
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232 GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, (NULL), |
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233 ("flush failed: %s", err->message)); |
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234 g_clear_error (&err); |
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235 } |
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236 } |
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237 break; |
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238 |
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239 default: |
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240 break; |
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241 } |
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242 |
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243 return (ret == GST_FLOW_OK); |
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244 } |
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245 |
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246 static GstFlowReturn |
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247 gst_gio_base_sink_render (GstBaseSink * base_sink, GstBuffer * buffer) |
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248 { |
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249 GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink); |
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250 gssize written; |
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251 gboolean success; |
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252 GError *err = NULL; |
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253 |
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254 g_return_val_if_fail (G_IS_OUTPUT_STREAM (sink->stream), GST_FLOW_ERROR); |
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255 |
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256 GST_LOG_OBJECT (sink, "writing %u bytes to offset %" G_GUINT64_FORMAT, |
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257 GST_BUFFER_SIZE (buffer), sink->position); |
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258 |
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259 written = g_output_stream_write (sink->stream, |
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260 GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer), sink->cancel, &err); |
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261 |
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262 success = (written >= 0); |
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263 |
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264 if (G_UNLIKELY (success && written < GST_BUFFER_SIZE (buffer))) { |
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265 /* FIXME: Can this happen? Should we handle it gracefully? gnomevfssink |
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266 * doesn't... */ |
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267 GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, (NULL), |
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268 ("Could not write to stream: (short write, only %" |
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269 G_GUINT64_FORMAT " bytes of %d bytes written)", |
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270 written, GST_BUFFER_SIZE (buffer))); |
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271 return GST_FLOW_ERROR; |
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272 } |
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273 |
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274 if (success) { |
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275 sink->position += written; |
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276 return GST_FLOW_OK; |
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277 |
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278 } else { |
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279 GstFlowReturn ret; |
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280 |
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281 if (!gst_gio_error (sink, "g_output_stream_write", &err, &ret)) { |
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282 GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, (NULL), |
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283 ("Could not write to stream: %s", err->message)); |
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284 g_clear_error (&err); |
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285 } |
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286 |
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287 return ret; |
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288 } |
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289 } |
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290 |
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291 static gboolean |
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292 gst_gio_base_sink_query (GstPad * pad, GstQuery * query) |
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293 { |
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294 GstGioBaseSink *sink = GST_GIO_BASE_SINK (GST_PAD_PARENT (pad)); |
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295 GstFormat format; |
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296 |
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297 switch (GST_QUERY_TYPE (query)) { |
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298 case GST_QUERY_POSITION: |
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299 gst_query_parse_position (query, &format, NULL); |
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300 switch (format) { |
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301 case GST_FORMAT_BYTES: |
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302 case GST_FORMAT_DEFAULT: |
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303 gst_query_set_position (query, GST_FORMAT_BYTES, sink->position); |
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304 return TRUE; |
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305 default: |
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306 return FALSE; |
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307 } |
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308 case GST_QUERY_FORMATS: |
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309 gst_query_set_formats (query, 2, GST_FORMAT_DEFAULT, GST_FORMAT_BYTES); |
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310 return TRUE; |
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311 default: |
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312 return gst_pad_query_default (pad, query); |
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313 } |
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314 } |
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315 |
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316 void |
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317 gst_gio_base_sink_set_stream (GstGioBaseSink * sink, GOutputStream * stream) |
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318 { |
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319 g_return_if_fail (G_IS_OUTPUT_STREAM (stream)); |
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320 g_return_if_fail ((GST_STATE (sink) != GST_STATE_PLAYING && |
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321 GST_STATE (sink) != GST_STATE_PAUSED)); |
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322 |
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323 if (G_IS_OUTPUT_STREAM (sink->stream)) { |
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324 gboolean success; |
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325 GError *err = NULL; |
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326 |
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327 GST_DEBUG_OBJECT (sink, "closing old stream"); |
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328 |
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329 /* FIXME: can block but unfortunately we can't use async operations |
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330 * here because they require a running main loop */ |
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331 success = g_output_stream_close (sink->stream, sink->cancel, &err); |
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332 |
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333 if (!success && !gst_gio_error (sink, "g_output_stream_close", &err, NULL)) { |
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334 GST_ELEMENT_WARNING (sink, RESOURCE, CLOSE, (NULL), |
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335 ("g_output_stream_close failed: %s", err->message)); |
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336 g_clear_error (&err); |
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337 } else if (!success) { |
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338 GST_ELEMENT_WARNING (sink, RESOURCE, CLOSE, (NULL), |
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339 ("g_output_stream_close failed")); |
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340 } else { |
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341 GST_DEBUG_OBJECT (sink, "g_output_stream_close succeeded"); |
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342 } |
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343 |
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344 g_object_unref (sink->stream); |
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345 sink->stream = NULL; |
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346 } |
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347 |
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348 sink->stream = stream; |
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349 } |
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