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<?xml version="1.0" encoding="UTF-8"?>
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<protocol name="android">
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Copyright © 2012 Collabora, Ltd.
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that copyright notice and this permission
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notice appear in supporting documentation, and that the name of
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the copyright holders not be used in advertising or publicity
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pertaining to distribution of the software without specific,
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written prior permission. The copyright holders make no
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representations about the suitability of this software for any
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purpose. It is provided "as is" without express or implied
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THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
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<interface name="android_wlegl" version="1">
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<description summary="Android EGL graphics buffer support">
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Interface used in the Android wrapper libEGL to share
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graphics buffers between the server and the client.
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<entry name="bad_handle" value="0" />
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<entry name="bad_value" value="1" />
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<request name="create_handle">
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<description summary="Create an Android native_handle_t object">
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This creator method initialises the native_handle_t object
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with everything except the file descriptors, which have to be
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<arg name="id" type="new_id" interface="android_wlegl_handle" />
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<arg name="num_fds" type="int" />
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<arg name="ints" type="array" summary="an array of int32_t" />
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<request name="create_buffer">
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<description summary="Create a wl_buffer from the native handle">
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Pass the Android native_handle_t to the server and attach it
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to the new wl_buffer object.
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The android_wlegl_handle object must be destroyed immediately
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<arg name="id" type="new_id" interface="wl_buffer" />
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<arg name="width" type="int" />
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<arg name="height" type="int" />
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<arg name="stride" type="int" />
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<arg name="format" type="int" />
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<arg name="usage" type="int" />
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<arg name="native_handle" type="object" interface="android_wlegl_handle" />
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<interface name="android_wlegl_handle" version="1">
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<description summary="An Android native_handle_t object">
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The Android native_handle_t is a semi-opaque object, that
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contains an EGL implementation specific number of int32
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values and file descriptors.
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We cannot send a variable size array of file descriptors
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over the Wayland protocol, so we send them one by one.
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<entry name="too_many_fds" value="0" />
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<request name="add_fd">
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<arg name="fd" type="fd" />
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<request name="destroy" type="destructor" />
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hybris/egl/platforms/common/wayland-android.xml
