author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 22 Jan 2010 09:59:59 +0200 | |
changeset 2 | 5505e8908944 |
permissions | -rw-r--r-- |
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/* GStreamer |
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* Copyright (C) 2006 Nokia <stefan.kost@nokia.com> |
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* |
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* videoorientation.c: video flipping and centering interface |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Library General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public |
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* License along with this library; if not, write to the |
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. |
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*/ |
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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#include "videoorientation.h" |
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#include "interfaces-marshal.h" |
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#include <string.h> |
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/** |
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* SECTION:gstvideoorientation |
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* @short_description: Interface for elements providing video orientation |
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* controls |
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* |
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* The interface allows unified access to control flipping and autocenter |
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* operation of video-sources or operators. |
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* |
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* Since: 0.10.11 |
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*/ |
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static void gst_video_orientation_iface_init (GstVideoOrientationInterface * |
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iface); |
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#ifdef __SYMBIAN32__ |
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EXPORT_C |
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#endif |
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GType |
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gst_video_orientation_get_type (void) |
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{ |
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static GType gst_video_orientation_type = 0; |
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if (!gst_video_orientation_type) { |
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static const GTypeInfo gst_video_orientation_info = { |
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sizeof (GstVideoOrientationInterface), |
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(GBaseInitFunc) gst_video_orientation_iface_init, |
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NULL, |
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NULL, |
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NULL, |
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NULL, |
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0, |
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0, |
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NULL, |
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}; |
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gst_video_orientation_type = g_type_register_static (G_TYPE_INTERFACE, |
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"GstVideoOrientation", &gst_video_orientation_info, 0); |
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g_type_interface_add_prerequisite (gst_video_orientation_type, |
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GST_TYPE_IMPLEMENTS_INTERFACE); |
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} |
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return gst_video_orientation_type; |
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} |
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static void |
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gst_video_orientation_iface_init (GstVideoOrientationInterface * iface) |
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{ |
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/* default virtual functions */ |
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iface->get_hflip = NULL; |
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iface->get_vflip = NULL; |
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iface->get_hcenter = NULL; |
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iface->get_vcenter = NULL; |
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iface->set_hflip = NULL; |
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iface->set_vflip = NULL; |
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iface->set_hcenter = NULL; |
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iface->set_vcenter = NULL; |
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} |
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/** |
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* gst_video_orientation_get_hflip: |
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* @video_orientation: #GstVideoOrientation interface of a #GstElement |
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* @flip: return location for the result |
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* |
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* Get the horizontal flipping state (%TRUE for flipped) from the given object. |
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* |
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* Since: 0.10.11 |
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* Returns: %TRUE in case the element supports flipping |
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*/ |
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#ifdef __SYMBIAN32__ |
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EXPORT_C |
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#endif |
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106 |
gboolean |
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107 |
gst_video_orientation_get_hflip (GstVideoOrientation * video_orientation, |
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108 |
gboolean * flip) |
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109 |
{ |
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110 |
GstVideoOrientationInterface *iface = |
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111 |
GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation); |
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112 |
|
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113 |
if (iface->get_hflip) { |
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return iface->get_hflip (video_orientation, flip); |
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115 |
} |
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116 |
return FALSE; |
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117 |
} |
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118 |
|
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119 |
/** |
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120 |
* gst_video_orientation_get_vflip: |
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121 |
* @video_orientation: #GstVideoOrientation interface of a #GstElement |
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122 |
* @flip: return location for the result |
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123 |
* |
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124 |
* Get the vertical flipping state (%TRUE for flipped) from the given object. |
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125 |
* |
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126 |
* Since: 0.10.11 |
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* Returns: %TRUE in case the element supports flipping |
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128 |
*/ |
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129 |
#ifdef __SYMBIAN32__ |
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130 |
EXPORT_C |
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131 |
#endif |
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132 |
|
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133 |
gboolean |
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134 |
gst_video_orientation_get_vflip (GstVideoOrientation * video_orientation, |
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135 |
gboolean * flip) |
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136 |
{ |
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137 |
GstVideoOrientationInterface *iface = |
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138 |
GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation); |
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139 |
|
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140 |
if (iface->get_vflip) { |
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141 |
return iface->get_vflip (video_orientation, flip); |
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142 |
} |
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143 |
return FALSE; |
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144 |
} |
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145 |
|
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146 |
/** |
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147 |
* gst_video_orientation_get_hcenter: |
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148 |
* @video_orientation: #GstVideoOrientation interface of a #GstElement |
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149 |
* @center: return location for the result |
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150 |
* |
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151 |
* Get the horizontal centering offset from the given object. |
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152 |
* |
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153 |
* Since: 0.10.11 |
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154 |
* Returns: %TRUE in case the element supports centering |
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155 |
*/ |
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156 |
#ifdef __SYMBIAN32__ |
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157 |
EXPORT_C |
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158 |
#endif |
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159 |
|
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160 |
gboolean |
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161 |
gst_video_orientation_get_hcenter (GstVideoOrientation * video_orientation, |
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162 |
gint * center) |
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163 |
{ |
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164 |
GstVideoOrientationInterface *iface = |
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165 |
GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation); |
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166 |
|
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167 |
if (iface->get_hcenter) { |
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168 |
return iface->get_hcenter (video_orientation, center); |
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169 |
} |
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170 |
return FALSE; |
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171 |
} |
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|
172 |
|
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|
173 |
/** |
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|
174 |
* gst_video_orientation_get_vcenter: |
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175 |
* @video_orientation: #GstVideoOrientation interface of a #GstElement |
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176 |
* @center: return location for the result |
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177 |
* |
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178 |
* Get the vertical centering offset from the given object. |
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179 |
* |
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180 |
* Since: 0.10.11 |
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181 |
* Returns: %TRUE in case the element supports centering |
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182 |
*/ |
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|
183 |
#ifdef __SYMBIAN32__ |
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184 |
EXPORT_C |
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185 |
#endif |
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186 |
|
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187 |
gboolean |
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188 |
gst_video_orientation_get_vcenter (GstVideoOrientation * video_orientation, |
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189 |
gint * center) |
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|
190 |
{ |
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|
191 |
GstVideoOrientationInterface *iface = |
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192 |
GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation); |
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|
193 |
|
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194 |
if (iface->get_vcenter) { |
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195 |
return iface->get_vcenter (video_orientation, center); |
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196 |
} |
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197 |
return FALSE; |
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198 |
} |
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|
199 |
|
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200 |
/** |
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201 |
* gst_video_orientation_set_hflip: |
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202 |
* @video_orientation: #GstVideoOrientation interface of a #GstElement |
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|
203 |
* @flip: use flipping |
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204 |
* |
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205 |
* Set the horizontal flipping state (%TRUE for flipped) for the given object. |
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206 |
* |
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207 |
* Since: 0.10.11 |
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208 |
* Returns: %TRUE in case the element supports flipping |
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209 |
*/ |
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210 |
#ifdef __SYMBIAN32__ |
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211 |
EXPORT_C |
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#endif |
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|
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214 |
gboolean |
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|
215 |
gst_video_orientation_set_hflip (GstVideoOrientation * video_orientation, |
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gboolean flip) |
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217 |
{ |
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GstVideoOrientationInterface *iface = |
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GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation); |
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220 |
|
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if (iface->set_hflip) { |
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return iface->set_hflip (video_orientation, flip); |
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} |
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return FALSE; |
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} |
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226 |
|
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227 |
/** |
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* gst_video_orientation_set_vflip: |
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* @video_orientation: #GstVideoOrientation interface of a #GstElement |
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* @flip: use flipping |
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231 |
* |
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* Set the vertical flipping state (%TRUE for flipped) for the given object. |
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233 |
* |
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234 |
* Since: 0.10.11 |
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* Returns: %TRUE in case the element supports flipping |
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236 |
*/ |
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237 |
#ifdef __SYMBIAN32__ |
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EXPORT_C |
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239 |
#endif |
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240 |
|
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241 |
gboolean |
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gst_video_orientation_set_vflip (GstVideoOrientation * video_orientation, |
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243 |
gboolean flip) |
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244 |
{ |
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GstVideoOrientationInterface *iface = |
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GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation); |
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247 |
|
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if (iface->set_vflip) { |
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return iface->set_vflip (video_orientation, flip); |
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} |
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251 |
return FALSE; |
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252 |
} |
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|
253 |
|
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254 |
/** |
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* gst_video_orientation_set_hcenter: |
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* @video_orientation: #GstVideoOrientation interface of a #GstElement |
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* @center: centering offset |
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258 |
* |
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259 |
* Set the horizontal centering offset for the given object. |
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260 |
* |
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261 |
* Since: 0.10.11 |
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* Returns: %TRUE in case the element supports centering |
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263 |
*/ |
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|
264 |
#ifdef __SYMBIAN32__ |
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265 |
EXPORT_C |
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266 |
#endif |
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|
267 |
|
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268 |
gboolean |
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269 |
gst_video_orientation_set_hcenter (GstVideoOrientation * video_orientation, |
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|
270 |
gint center) |
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|
271 |
{ |
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272 |
GstVideoOrientationInterface *iface = |
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GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation); |
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|
274 |
|
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275 |
if (iface->set_hcenter) { |
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return iface->set_hcenter (video_orientation, center); |
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|
277 |
} |
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|
278 |
return FALSE; |
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|
279 |
} |
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|
280 |
|
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|
281 |
/** |
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|
282 |
* gst_video_orientation_set_vcenter: |
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|
283 |
* @video_orientation: #GstVideoOrientation interface of a #GstElement |
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|
284 |
* @center: centering offset |
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|
285 |
* |
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|
286 |
* Set the vertical centering offset for the given object. |
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|
287 |
* |
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|
288 |
* Since: 0.10.11 |
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|
289 |
* Returns: %TRUE in case the element supports centering |
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|
290 |
*/ |
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|
291 |
#ifdef __SYMBIAN32__ |
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292 |
EXPORT_C |
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|
293 |
#endif |
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|
294 |
|
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|
295 |
gboolean |
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|
296 |
gst_video_orientation_set_vcenter (GstVideoOrientation * video_orientation, |
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|
297 |
gint center) |
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|
298 |
{ |
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|
299 |
GstVideoOrientationInterface *iface = |
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|
300 |
GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation); |
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|
301 |
|
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|
302 |
if (iface->set_vcenter) { |
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|
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return iface->set_vcenter (video_orientation, center); |
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|
304 |
} |
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|
305 |
return FALSE; |
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|
306 |
} |