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GstVideo-1.0.gir
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<?xml version="1.0"?>
<!-- This file was automatically generated from C sources - DO NOT EDIT!
To affect the contents of this file, edit the original C definitions,
and/or use gtk-doc annotations. -->
<repository xmlns="http://www.gtk.org/introspection/core/1.0" xmlns:c="http://www.gtk.org/introspection/c/1.0" xmlns:glib="http://www.gtk.org/introspection/glib/1.0" version="1.2">
<include name="Gst" version="1.0"/>
<include name="GstBase" version="1.0"/>
<package name="gstreamer-video-1.0"/>
<c:include name="gst/video/video.h"/>
<namespace name="GstVideo" version="1.0" shared-library="libgstvideo-1.0.so.0" c:identifier-prefixes="Gst" c:symbol-prefixes="gst">
<constant name="BUFFER_POOL_OPTION_VIDEO_AFFINE_TRANSFORMATION_META" value="GstBufferPoolOptionVideoAffineTransformation" c:type="GST_BUFFER_POOL_OPTION_VIDEO_AFFINE_TRANSFORMATION_META">
<type name="utf8" c:type="gchar*"/>
</constant>
<constant name="BUFFER_POOL_OPTION_VIDEO_ALIGNMENT" value="GstBufferPoolOptionVideoAlignment" c:type="GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT">
<doc xml:space="preserve">A bufferpool option to enable extra padding. When a bufferpool supports this
option, gst_buffer_pool_config_set_video_alignment() can be called.
When this option is enabled on the bufferpool,
#GST_BUFFER_POOL_OPTION_VIDEO_META should also be enabled.</doc>
<type name="utf8" c:type="gchar*"/>
</constant>
<constant name="BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META" value="GstBufferPoolOptionVideoGLTextureUploadMeta" c:type="GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META" version="1.2.2">
<doc xml:space="preserve">An option that can be activated on a bufferpool to request gl texture upload
meta on buffers from the pool.
When this option is enabled on the bufferpool,
@GST_BUFFER_POOL_OPTION_VIDEO_META should also be enabled.</doc>
<type name="utf8" c:type="gchar*"/>
</constant>
<constant name="BUFFER_POOL_OPTION_VIDEO_META" value="GstBufferPoolOptionVideoMeta" c:type="GST_BUFFER_POOL_OPTION_VIDEO_META">
<doc xml:space="preserve">An option that can be activated on bufferpool to request video metadata
on buffers from the pool.</doc>
<type name="utf8" c:type="gchar*"/>
</constant>
<constant name="CAPS_FEATURE_FORMAT_INTERLACED" value="format:Interlaced" c:type="GST_CAPS_FEATURE_FORMAT_INTERLACED" version="1.16.">
<doc xml:space="preserve">Name of the caps feature indicating that the stream is interlaced.
Currently it is only used for video with 'interlace-mode=alternate'
to ensure backwards compatibility for this new mode.
In this mode each buffer carries a single field of interlaced video.
@GST_VIDEO_BUFFER_FLAG_TOP_FIELD and @GST_VIDEO_BUFFER_FLAG_BOTTOM_FIELD
indicate whether the buffer carries a top or bottom field. The order of
buffers/fields in the stream and the timestamps on the buffers indicate the
temporal order of the fields.
Top and bottom fields are expected to alternate in this mode.
The frame rate in the caps still signals the frame rate, so the notional field
rate will be twice the frame rate from the caps
(see @GST_VIDEO_INFO_FIELD_RATE_N).</doc>
<type name="utf8" c:type="gchar*"/>
</constant>
<constant name="CAPS_FEATURE_META_GST_VIDEO_AFFINE_TRANSFORMATION_META" value="meta:GstVideoAffineTransformation" c:type="GST_CAPS_FEATURE_META_GST_VIDEO_AFFINE_TRANSFORMATION_META">
<type name="utf8" c:type="gchar*"/>
</constant>
<constant name="CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META" value="meta:GstVideoGLTextureUploadMeta" c:type="GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META">
<type name="utf8" c:type="gchar*"/>
</constant>
<constant name="CAPS_FEATURE_META_GST_VIDEO_META" value="meta:GstVideoMeta" c:type="GST_CAPS_FEATURE_META_GST_VIDEO_META">
<type name="utf8" c:type="gchar*"/>
</constant>
<constant name="CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION" value="meta:GstVideoOverlayComposition" c:type="GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION">
<type name="utf8" c:type="gchar*"/>
</constant>
<function-macro name="COLOR_BALANCE" c:identifier="GST_COLOR_BALANCE" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="COLOR_BALANCE_CHANNEL" c:identifier="GST_COLOR_BALANCE_CHANNEL" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="COLOR_BALANCE_CHANNEL_CLASS" c:identifier="GST_COLOR_BALANCE_CHANNEL_CLASS" introspectable="0">
<parameters>
<parameter name="klass">
</parameter>
</parameters>
</function-macro>
<function-macro name="COLOR_BALANCE_GET_INTERFACE" c:identifier="GST_COLOR_BALANCE_GET_INTERFACE" introspectable="0">
<parameters>
<parameter name="inst">
</parameter>
</parameters>
</function-macro>
<interface name="ColorBalance" c:symbol-prefix="color_balance" c:type="GstColorBalance" glib:type-name="GstColorBalance" glib:get-type="gst_color_balance_get_type" glib:type-struct="ColorBalanceInterface">
<doc xml:space="preserve">This interface is implemented by elements which can perform some color
balance operation on video frames they process. For example, modifying
the brightness, contrast, hue or saturation.
Example elements are 'xvimagesink' and 'colorbalance'</doc>
<virtual-method name="get_balance_type" invoker="get_balance_type">
<doc xml:space="preserve">Get the #GstColorBalanceType of this implementation.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">A the #GstColorBalanceType.</doc>
<type name="ColorBalanceType" c:type="GstColorBalanceType"/>
</return-value>
<parameters>
<instance-parameter name="balance" transfer-ownership="none">
<doc xml:space="preserve">The #GstColorBalance implementation</doc>
<type name="ColorBalance" c:type="GstColorBalance*"/>
</instance-parameter>
</parameters>
</virtual-method>
<virtual-method name="get_value" invoker="get_value">
<doc xml:space="preserve">Retrieve the current value of the indicated channel, between min_value
and max_value.
See Also: The #GstColorBalanceChannel.min_value and
#GstColorBalanceChannel.max_value members of the
#GstColorBalanceChannel object.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">The current value of the channel.</doc>
<type name="gint" c:type="gint"/>
</return-value>
<parameters>
<instance-parameter name="balance" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalance instance</doc>
<type name="ColorBalance" c:type="GstColorBalance*"/>
</instance-parameter>
<parameter name="channel" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalanceChannel instance</doc>
<type name="ColorBalanceChannel" c:type="GstColorBalanceChannel*"/>
</parameter>
</parameters>
</virtual-method>
<virtual-method name="list_channels" invoker="list_channels">
<doc xml:space="preserve">Retrieve a list of the available channels.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">A
GList containing pointers to #GstColorBalanceChannel
objects. The list is owned by the #GstColorBalance
instance and must not be freed.</doc>
<type name="GLib.List" c:type="const GList*">
<type name="ColorBalanceChannel"/>
</type>
</return-value>
<parameters>
<instance-parameter name="balance" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalance instance</doc>
<type name="ColorBalance" c:type="GstColorBalance*"/>
</instance-parameter>
</parameters>
</virtual-method>
<virtual-method name="set_value" invoker="set_value">
<doc xml:space="preserve">Sets the current value of the channel to the passed value, which must
be between min_value and max_value.
See Also: The #GstColorBalanceChannel.min_value and
#GstColorBalanceChannel.max_value members of the
#GstColorBalanceChannel object.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="balance" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalance instance</doc>
<type name="ColorBalance" c:type="GstColorBalance*"/>
</instance-parameter>
<parameter name="channel" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalanceChannel instance</doc>
<type name="ColorBalanceChannel" c:type="GstColorBalanceChannel*"/>
</parameter>
<parameter name="value" transfer-ownership="none">
<doc xml:space="preserve">The new value for the channel.</doc>
<type name="gint" c:type="gint"/>
</parameter>
</parameters>
</virtual-method>
<virtual-method name="value_changed" invoker="value_changed">
<doc xml:space="preserve">A helper function called by implementations of the GstColorBalance
interface. It fires the #GstColorBalance::value-changed signal on the
instance, and the #GstColorBalanceChannel::value-changed signal on the
channel object.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="balance" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalance instance</doc>
<type name="ColorBalance" c:type="GstColorBalance*"/>
</instance-parameter>
<parameter name="channel" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalanceChannel whose value has changed</doc>
<type name="ColorBalanceChannel" c:type="GstColorBalanceChannel*"/>
</parameter>
<parameter name="value" transfer-ownership="none">
<doc xml:space="preserve">The new value of the channel</doc>
<type name="gint" c:type="gint"/>
</parameter>
</parameters>
</virtual-method>
<method name="get_balance_type" c:identifier="gst_color_balance_get_balance_type">
<doc xml:space="preserve">Get the #GstColorBalanceType of this implementation.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">A the #GstColorBalanceType.</doc>
<type name="ColorBalanceType" c:type="GstColorBalanceType"/>
</return-value>
<parameters>
<instance-parameter name="balance" transfer-ownership="none">
<doc xml:space="preserve">The #GstColorBalance implementation</doc>
<type name="ColorBalance" c:type="GstColorBalance*"/>
</instance-parameter>
</parameters>
</method>
<method name="get_value" c:identifier="gst_color_balance_get_value">
<doc xml:space="preserve">Retrieve the current value of the indicated channel, between min_value
and max_value.
See Also: The #GstColorBalanceChannel.min_value and
#GstColorBalanceChannel.max_value members of the
#GstColorBalanceChannel object.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">The current value of the channel.</doc>
<type name="gint" c:type="gint"/>
</return-value>
<parameters>
<instance-parameter name="balance" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalance instance</doc>
<type name="ColorBalance" c:type="GstColorBalance*"/>
</instance-parameter>
<parameter name="channel" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalanceChannel instance</doc>
<type name="ColorBalanceChannel" c:type="GstColorBalanceChannel*"/>
</parameter>
</parameters>
</method>
<method name="list_channels" c:identifier="gst_color_balance_list_channels">
<doc xml:space="preserve">Retrieve a list of the available channels.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">A
GList containing pointers to #GstColorBalanceChannel
objects. The list is owned by the #GstColorBalance
instance and must not be freed.</doc>
<type name="GLib.List" c:type="const GList*">
<type name="ColorBalanceChannel"/>
</type>
</return-value>
<parameters>
<instance-parameter name="balance" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalance instance</doc>
<type name="ColorBalance" c:type="GstColorBalance*"/>
</instance-parameter>
</parameters>
</method>
<method name="set_value" c:identifier="gst_color_balance_set_value">
<doc xml:space="preserve">Sets the current value of the channel to the passed value, which must
be between min_value and max_value.
See Also: The #GstColorBalanceChannel.min_value and
#GstColorBalanceChannel.max_value members of the
#GstColorBalanceChannel object.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="balance" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalance instance</doc>
<type name="ColorBalance" c:type="GstColorBalance*"/>
</instance-parameter>
<parameter name="channel" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalanceChannel instance</doc>
<type name="ColorBalanceChannel" c:type="GstColorBalanceChannel*"/>
</parameter>
<parameter name="value" transfer-ownership="none">
<doc xml:space="preserve">The new value for the channel.</doc>
<type name="gint" c:type="gint"/>
</parameter>
</parameters>
</method>
<method name="value_changed" c:identifier="gst_color_balance_value_changed">
<doc xml:space="preserve">A helper function called by implementations of the GstColorBalance
interface. It fires the #GstColorBalance::value-changed signal on the
instance, and the #GstColorBalanceChannel::value-changed signal on the
channel object.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="balance" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalance instance</doc>
<type name="ColorBalance" c:type="GstColorBalance*"/>
</instance-parameter>
<parameter name="channel" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalanceChannel whose value has changed</doc>
<type name="ColorBalanceChannel" c:type="GstColorBalanceChannel*"/>
</parameter>
<parameter name="value" transfer-ownership="none">
<doc xml:space="preserve">The new value of the channel</doc>
<type name="gint" c:type="gint"/>
</parameter>
</parameters>
</method>
<glib:signal name="value-changed" when="last">
<doc xml:space="preserve">Fired when the value of the indicated channel has changed.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<parameter name="channel" transfer-ownership="none">
<doc xml:space="preserve">The #GstColorBalanceChannel</doc>
<type name="ColorBalanceChannel"/>
</parameter>
<parameter name="value" transfer-ownership="none">
<doc xml:space="preserve">The new value</doc>
<type name="gint" c:type="gint"/>
</parameter>
</parameters>
</glib:signal>
</interface>
<class name="ColorBalanceChannel" c:symbol-prefix="color_balance_channel" c:type="GstColorBalanceChannel" parent="GObject.Object" glib:type-name="GstColorBalanceChannel" glib:get-type="gst_color_balance_channel_get_type" glib:type-struct="ColorBalanceChannelClass">
<doc xml:space="preserve">The #GstColorBalanceChannel object represents a parameter
for modifying the color balance implemented by an element providing the
#GstColorBalance interface. For example, Hue or Saturation.</doc>
<virtual-method name="value_changed">
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<instance-parameter name="channel" transfer-ownership="none">
<type name="ColorBalanceChannel" c:type="GstColorBalanceChannel*"/>
</instance-parameter>
<parameter name="value" transfer-ownership="none">
<type name="gint" c:type="gint"/>
</parameter>
</parameters>
</virtual-method>
<field name="parent">
<type name="GObject.Object" c:type="GObject"/>
</field>
<field name="label">
<doc xml:space="preserve">A string containing a descriptive name for this channel</doc>
<type name="utf8" c:type="gchar*"/>
</field>
<field name="min_value">
<doc xml:space="preserve">The minimum valid value for this channel.</doc>
<type name="gint" c:type="gint"/>
</field>
<field name="max_value">
<doc xml:space="preserve">The maximum valid value for this channel.</doc>
<type name="gint" c:type="gint"/>
</field>
<field name="_gst_reserved" readable="0" private="1">
<array zero-terminated="0" fixed-size="4">
<type name="gpointer" c:type="gpointer"/>
</array>
</field>
<glib:signal name="value-changed" when="last">
<doc xml:space="preserve">Fired when the value of the indicated channel has changed.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<parameter name="value" transfer-ownership="none">
<doc xml:space="preserve">The new value</doc>
<type name="gint" c:type="gint"/>
</parameter>
</parameters>
</glib:signal>
</class>
<record name="ColorBalanceChannelClass" c:type="GstColorBalanceChannelClass" glib:is-gtype-struct-for="ColorBalanceChannel">
<doc xml:space="preserve">Color-balance channel class.</doc>
<field name="parent">
<doc xml:space="preserve">the parent class</doc>
<type name="GObject.ObjectClass" c:type="GObjectClass"/>
</field>
<field name="value_changed">
<callback name="value_changed">
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<parameter name="channel" transfer-ownership="none">
<type name="ColorBalanceChannel" c:type="GstColorBalanceChannel*"/>
</parameter>
<parameter name="value" transfer-ownership="none">
<type name="gint" c:type="gint"/>
</parameter>
</parameters>
</callback>
</field>
<field name="_gst_reserved" readable="0" private="1">
<array zero-terminated="0" fixed-size="4">
<type name="gpointer" c:type="gpointer"/>
</array>
</field>
</record>
<record name="ColorBalanceInterface" c:type="GstColorBalanceInterface" glib:is-gtype-struct-for="ColorBalance">
<doc xml:space="preserve">Color-balance interface.</doc>
<field name="iface">
<doc xml:space="preserve">the parent interface</doc>
<type name="GObject.TypeInterface" c:type="GTypeInterface"/>
</field>
<field name="list_channels">
<callback name="list_channels">
<return-value transfer-ownership="none">
<doc xml:space="preserve">A
GList containing pointers to #GstColorBalanceChannel
objects. The list is owned by the #GstColorBalance
instance and must not be freed.</doc>
<type name="GLib.List" c:type="const GList*">
<type name="ColorBalanceChannel"/>
</type>
</return-value>
<parameters>
<parameter name="balance" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalance instance</doc>
<type name="ColorBalance" c:type="GstColorBalance*"/>
</parameter>
</parameters>
</callback>
</field>
<field name="set_value">
<callback name="set_value">
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<parameter name="balance" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalance instance</doc>
<type name="ColorBalance" c:type="GstColorBalance*"/>
</parameter>
<parameter name="channel" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalanceChannel instance</doc>
<type name="ColorBalanceChannel" c:type="GstColorBalanceChannel*"/>
</parameter>
<parameter name="value" transfer-ownership="none">
<doc xml:space="preserve">The new value for the channel.</doc>
<type name="gint" c:type="gint"/>
</parameter>
</parameters>
</callback>
</field>
<field name="get_value">
<callback name="get_value">
<return-value transfer-ownership="none">
<doc xml:space="preserve">The current value of the channel.</doc>
<type name="gint" c:type="gint"/>
</return-value>
<parameters>
<parameter name="balance" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalance instance</doc>
<type name="ColorBalance" c:type="GstColorBalance*"/>
</parameter>
<parameter name="channel" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalanceChannel instance</doc>
<type name="ColorBalanceChannel" c:type="GstColorBalanceChannel*"/>
</parameter>
</parameters>
</callback>
</field>
<field name="get_balance_type">
<callback name="get_balance_type">
<return-value transfer-ownership="none">
<doc xml:space="preserve">A the #GstColorBalanceType.</doc>
<type name="ColorBalanceType" c:type="GstColorBalanceType"/>
</return-value>
<parameters>
<parameter name="balance" transfer-ownership="none">
<doc xml:space="preserve">The #GstColorBalance implementation</doc>
<type name="ColorBalance" c:type="GstColorBalance*"/>
</parameter>
</parameters>
</callback>
</field>
<field name="value_changed">
<callback name="value_changed">
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<parameter name="balance" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalance instance</doc>
<type name="ColorBalance" c:type="GstColorBalance*"/>
</parameter>
<parameter name="channel" transfer-ownership="none">
<doc xml:space="preserve">A #GstColorBalanceChannel whose value has changed</doc>
<type name="ColorBalanceChannel" c:type="GstColorBalanceChannel*"/>
</parameter>
<parameter name="value" transfer-ownership="none">
<doc xml:space="preserve">The new value of the channel</doc>
<type name="gint" c:type="gint"/>
</parameter>
</parameters>
</callback>
</field>
<field name="_gst_reserved" readable="0" private="1">
<array zero-terminated="0" fixed-size="4">
<type name="gpointer" c:type="gpointer"/>
</array>
</field>
</record>
<enumeration name="ColorBalanceType" glib:type-name="GstColorBalanceType" glib:get-type="gst_color_balance_type_get_type" c:type="GstColorBalanceType">
<doc xml:space="preserve">An enumeration indicating whether an element implements color balancing
operations in software or in dedicated hardware. In general, dedicated
hardware implementations (such as those provided by xvimagesink) are
preferred.</doc>
<member name="hardware" value="0" c:identifier="GST_COLOR_BALANCE_HARDWARE" glib:nick="hardware" glib:name="GST_COLOR_BALANCE_HARDWARE">
<doc xml:space="preserve">Color balance is implemented with dedicated
hardware.</doc>
</member>
<member name="software" value="1" c:identifier="GST_COLOR_BALANCE_SOFTWARE" glib:nick="software" glib:name="GST_COLOR_BALANCE_SOFTWARE">
<doc xml:space="preserve">Color balance is implemented via software
processing.</doc>
</member>
</enumeration>
<function-macro name="IS_COLOR_BALANCE" c:identifier="GST_IS_COLOR_BALANCE" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_COLOR_BALANCE_CHANNEL" c:identifier="GST_IS_COLOR_BALANCE_CHANNEL" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_COLOR_BALANCE_CHANNEL_CLASS" c:identifier="GST_IS_COLOR_BALANCE_CHANNEL_CLASS" introspectable="0">
<parameters>
<parameter name="klass">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_NAVIGATION" c:identifier="GST_IS_NAVIGATION" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_AGGREGATOR" c:identifier="GST_IS_VIDEO_AGGREGATOR" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_AGGREGATOR_CLASS" c:identifier="GST_IS_VIDEO_AGGREGATOR_CLASS" introspectable="0">
<parameters>
<parameter name="klass">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_AGGREGATOR_CONVERT_PAD" c:identifier="GST_IS_VIDEO_AGGREGATOR_CONVERT_PAD" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_AGGREGATOR_CONVERT_PAD_CLASS" c:identifier="GST_IS_VIDEO_AGGREGATOR_CONVERT_PAD_CLASS" introspectable="0">
<parameters>
<parameter name="klass">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_AGGREGATOR_PAD" c:identifier="GST_IS_VIDEO_AGGREGATOR_PAD" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_AGGREGATOR_PAD_CLASS" c:identifier="GST_IS_VIDEO_AGGREGATOR_PAD_CLASS" introspectable="0">
<parameters>
<parameter name="klass">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_AGGREGATOR_PARALLEL_CONVERT_PAD" c:identifier="GST_IS_VIDEO_AGGREGATOR_PARALLEL_CONVERT_PAD" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_AGGREGATOR_PARALLEL_CONVERT_PAD_CLASS" c:identifier="GST_IS_VIDEO_AGGREGATOR_PARALLEL_CONVERT_PAD_CLASS" introspectable="0">
<parameters>
<parameter name="klass">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_BUFFER_POOL" c:identifier="GST_IS_VIDEO_BUFFER_POOL" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_DECODER" c:identifier="GST_IS_VIDEO_DECODER" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_DECODER_CLASS" c:identifier="GST_IS_VIDEO_DECODER_CLASS" introspectable="0">
<parameters>
<parameter name="klass">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_DIRECTION" c:identifier="GST_IS_VIDEO_DIRECTION" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_ENCODER" c:identifier="GST_IS_VIDEO_ENCODER" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_ENCODER_CLASS" c:identifier="GST_IS_VIDEO_ENCODER_CLASS" introspectable="0">
<parameters>
<parameter name="klass">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_FILTER" c:identifier="GST_IS_VIDEO_FILTER" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_FILTER_CLASS" c:identifier="GST_IS_VIDEO_FILTER_CLASS" introspectable="0">
<parameters>
<parameter name="klass">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_ORIENTATION" c:identifier="GST_IS_VIDEO_ORIENTATION" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_OVERLAY" c:identifier="GST_IS_VIDEO_OVERLAY" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_OVERLAY_COMPOSITION" c:identifier="GST_IS_VIDEO_OVERLAY_COMPOSITION" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_OVERLAY_RECTANGLE" c:identifier="GST_IS_VIDEO_OVERLAY_RECTANGLE" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_SINK" c:identifier="GST_IS_VIDEO_SINK" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="IS_VIDEO_SINK_CLASS" c:identifier="GST_IS_VIDEO_SINK_CLASS" introspectable="0">
<parameters>
<parameter name="klass">
</parameter>
</parameters>
</function-macro>
<constant name="META_TAG_VIDEO_COLORSPACE_STR" value="colorspace" c:type="GST_META_TAG_VIDEO_COLORSPACE_STR" version="1.2">
<doc xml:space="preserve">This metadata stays relevant as long as video colorspace is unchanged.</doc>
<type name="utf8" c:type="gchar*"/>
</constant>
<constant name="META_TAG_VIDEO_ORIENTATION_STR" value="orientation" c:type="GST_META_TAG_VIDEO_ORIENTATION_STR" version="1.2">
<doc xml:space="preserve">This metadata stays relevant as long as video orientation is unchanged.</doc>
<type name="utf8" c:type="gchar*"/>
</constant>
<constant name="META_TAG_VIDEO_SIZE_STR" value="size" c:type="GST_META_TAG_VIDEO_SIZE_STR" version="1.2">
<doc xml:space="preserve">This metadata stays relevant as long as video size is unchanged.</doc>
<type name="utf8" c:type="gchar*"/>
</constant>
<constant name="META_TAG_VIDEO_STR" value="video" c:type="GST_META_TAG_VIDEO_STR" version="1.2">
<doc xml:space="preserve">This metadata is relevant for video streams.</doc>
<type name="utf8" c:type="gchar*"/>
</constant>
<function-macro name="NAVIGATION" c:identifier="GST_NAVIGATION" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<function-macro name="NAVIGATION_GET_INTERFACE" c:identifier="GST_NAVIGATION_GET_INTERFACE" introspectable="0">
<parameters>
<parameter name="obj">
</parameter>
</parameters>
</function-macro>
<interface name="Navigation" c:symbol-prefix="navigation" c:type="GstNavigation" glib:type-name="GstNavigation" glib:get-type="gst_navigation_get_type" glib:type-struct="NavigationInterface">
<doc xml:space="preserve">The Navigation interface is used for creating and injecting navigation
related events such as mouse button presses, cursor motion and key presses.
The associated library also provides methods for parsing received events, and
for sending and receiving navigation related bus events. One main usecase is
DVD menu navigation.
The main parts of the API are:
* The GstNavigation interface, implemented by elements which provide an
application with the ability to create and inject navigation events into
the pipeline.
* GstNavigation event handling API. GstNavigation events are created in
response to calls on a GstNavigation interface implementation, and sent in
the pipeline. Upstream elements can use the navigation event API functions
to parse the contents of received messages.
* GstNavigation message handling API. GstNavigation messages may be sent on
the message bus to inform applications of navigation related changes in the
pipeline, such as the mouse moving over a clickable region, or the set of
available angles changing.
The GstNavigation message functions provide functions for creating and
parsing custom bus messages for signaling GstNavigation changes.</doc>
<function name="event_get_coordinates" c:identifier="gst_navigation_event_get_coordinates" version="1.22">
<doc xml:space="preserve">Try to retrieve x and y coordinates of a #GstNavigation event.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">A boolean indicating success.</doc>
<type name="gboolean" c:type="gboolean"/>
</return-value>
<parameters>
<parameter name="event" transfer-ownership="none">
<doc xml:space="preserve">The #GstEvent to inspect.</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</parameter>
<parameter name="x" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
<doc xml:space="preserve">Pointer to a gdouble to receive the x coordinate of the
navigation event.</doc>
<type name="gdouble" c:type="gdouble*"/>
</parameter>
<parameter name="y" direction="out" caller-allocates="0" transfer-ownership="full" optional="1" allow-none="1">
<doc xml:space="preserve">Pointer to a gdouble to receive the y coordinate of the
navigation event.</doc>
<type name="gdouble" c:type="gdouble*"/>
</parameter>
</parameters>
</function>
<function name="event_get_type" c:identifier="gst_navigation_event_get_type">
<doc xml:space="preserve">Inspect a #GstEvent and return the #GstNavigationEventType of the event, or
#GST_NAVIGATION_EVENT_INVALID if the event is not a #GstNavigation event.</doc>
<return-value transfer-ownership="none">
<type name="NavigationEventType" c:type="GstNavigationEventType"/>
</return-value>
<parameters>
<parameter name="event" transfer-ownership="none">
<doc xml:space="preserve">A #GstEvent to inspect.</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</parameter>
</parameters>
</function>
<function name="event_new_command" c:identifier="gst_navigation_event_new_command" version="1.22">
<doc xml:space="preserve">Create a new navigation event given navigation command..</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">a new #GstEvent</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</return-value>
<parameters>
<parameter name="command" transfer-ownership="none">
<doc xml:space="preserve">The navigation command to use.</doc>
<type name="NavigationCommand" c:type="GstNavigationCommand"/>
</parameter>
</parameters>
</function>
<function name="event_new_key_press" c:identifier="gst_navigation_event_new_key_press" version="1.22">
<doc xml:space="preserve">Create a new navigation event for the given key press.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">a new #GstEvent</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</return-value>
<parameters>
<parameter name="key" transfer-ownership="none">
<doc xml:space="preserve">A string identifying the key press.</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
<parameter name="state" transfer-ownership="none">
<doc xml:space="preserve">a bit-mask representing the state of the modifier keys (e.g. Control,
Shift and Alt).</doc>
<type name="NavigationModifierType" c:type="GstNavigationModifierType"/>
</parameter>
</parameters>
</function>
<function name="event_new_key_release" c:identifier="gst_navigation_event_new_key_release" version="1.22">
<doc xml:space="preserve">Create a new navigation event for the given key release.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">a new #GstEvent</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</return-value>
<parameters>
<parameter name="key" transfer-ownership="none">
<doc xml:space="preserve">A string identifying the released key.</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
<parameter name="state" transfer-ownership="none">
<doc xml:space="preserve">a bit-mask representing the state of the modifier keys (e.g. Control,
Shift and Alt).</doc>
<type name="NavigationModifierType" c:type="GstNavigationModifierType"/>
</parameter>
</parameters>
</function>
<function name="event_new_mouse_button_press" c:identifier="gst_navigation_event_new_mouse_button_press" version="1.22">
<doc xml:space="preserve">Create a new navigation event for the given key mouse button press.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">a new #GstEvent</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</return-value>
<parameters>
<parameter name="button" transfer-ownership="none">
<doc xml:space="preserve">The number of the pressed mouse button.</doc>
<type name="gint" c:type="gint"/>
</parameter>
<parameter name="x" transfer-ownership="none">
<doc xml:space="preserve">The x coordinate of the mouse cursor.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="y" transfer-ownership="none">
<doc xml:space="preserve">The y coordinate of the mouse cursor.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="state" transfer-ownership="none">
<doc xml:space="preserve">a bit-mask representing the state of the modifier keys (e.g. Control,
Shift and Alt).</doc>
<type name="NavigationModifierType" c:type="GstNavigationModifierType"/>
</parameter>
</parameters>
</function>
<function name="event_new_mouse_button_release" c:identifier="gst_navigation_event_new_mouse_button_release" version="1.22">
<doc xml:space="preserve">Create a new navigation event for the given key mouse button release.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">a new #GstEvent</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</return-value>
<parameters>
<parameter name="button" transfer-ownership="none">
<doc xml:space="preserve">The number of the released mouse button.</doc>
<type name="gint" c:type="gint"/>
</parameter>
<parameter name="x" transfer-ownership="none">
<doc xml:space="preserve">The x coordinate of the mouse cursor.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="y" transfer-ownership="none">
<doc xml:space="preserve">The y coordinate of the mouse cursor.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="state" transfer-ownership="none">
<doc xml:space="preserve">a bit-mask representing the state of the modifier keys (e.g. Control,
Shift and Alt).</doc>
<type name="NavigationModifierType" c:type="GstNavigationModifierType"/>
</parameter>
</parameters>
</function>
<function name="event_new_mouse_move" c:identifier="gst_navigation_event_new_mouse_move" version="1.22">
<doc xml:space="preserve">Create a new navigation event for the new mouse location.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">a new #GstEvent</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</return-value>
<parameters>
<parameter name="x" transfer-ownership="none">
<doc xml:space="preserve">The x coordinate of the mouse cursor.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="y" transfer-ownership="none">
<doc xml:space="preserve">The y coordinate of the mouse cursor.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="state" transfer-ownership="none">
<doc xml:space="preserve">a bit-mask representing the state of the modifier keys (e.g. Control,
Shift and Alt).</doc>
<type name="NavigationModifierType" c:type="GstNavigationModifierType"/>
</parameter>
</parameters>
</function>
<function name="event_new_mouse_scroll" c:identifier="gst_navigation_event_new_mouse_scroll" version="1.22">
<doc xml:space="preserve">Create a new navigation event for the mouse scroll.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">a new #GstEvent</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</return-value>
<parameters>
<parameter name="x" transfer-ownership="none">
<doc xml:space="preserve">The x coordinate of the mouse cursor.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="y" transfer-ownership="none">
<doc xml:space="preserve">The y coordinate of the mouse cursor.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="delta_x" transfer-ownership="none">
<doc xml:space="preserve">The x component of the scroll movement.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="delta_y" transfer-ownership="none">
<doc xml:space="preserve">The y component of the scroll movement.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="state" transfer-ownership="none">
<doc xml:space="preserve">a bit-mask representing the state of the modifier keys (e.g. Control,
Shift and Alt).</doc>
<type name="NavigationModifierType" c:type="GstNavigationModifierType"/>
</parameter>
</parameters>
</function>
<function name="event_new_touch_cancel" c:identifier="gst_navigation_event_new_touch_cancel" version="1.22">
<doc xml:space="preserve">Create a new navigation event signalling that all currently active touch
points are cancelled and should be discarded. For example, under Wayland
this event might be sent when a swipe passes the threshold to be recognized
as a gesture by the compositor.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">a new #GstEvent</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</return-value>
<parameters>
<parameter name="state" transfer-ownership="none">
<doc xml:space="preserve">a bit-mask representing the state of the modifier keys (e.g. Control,
Shift and Alt).</doc>
<type name="NavigationModifierType" c:type="GstNavigationModifierType"/>
</parameter>
</parameters>
</function>
<function name="event_new_touch_down" c:identifier="gst_navigation_event_new_touch_down" version="1.22">
<doc xml:space="preserve">Create a new navigation event for an added touch point.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">a new #GstEvent</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</return-value>
<parameters>
<parameter name="identifier" transfer-ownership="none">
<doc xml:space="preserve">A number uniquely identifying this touch point. It must stay
unique to this touch point at least until an up event is sent for
the same identifier, or all touch points are cancelled.</doc>
<type name="guint" c:type="guint"/>
</parameter>
<parameter name="x" transfer-ownership="none">
<doc xml:space="preserve">The x coordinate of the new touch point.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="y" transfer-ownership="none">
<doc xml:space="preserve">The y coordinate of the new touch point.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="pressure" transfer-ownership="none">
<doc xml:space="preserve">Pressure data of the touch point, from 0.0 to 1.0, or NaN if no
data is available.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="state" transfer-ownership="none">
<doc xml:space="preserve">a bit-mask representing the state of the modifier keys (e.g. Control,
Shift and Alt).</doc>
<type name="NavigationModifierType" c:type="GstNavigationModifierType"/>
</parameter>
</parameters>
</function>
<function name="event_new_touch_frame" c:identifier="gst_navigation_event_new_touch_frame" version="1.22">
<doc xml:space="preserve">Create a new navigation event signalling the end of a touch frame. Touch
frames signal that all previous down, motion and up events not followed by
another touch frame event already should be considered simultaneous.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">a new #GstEvent</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</return-value>
<parameters>
<parameter name="state" transfer-ownership="none">
<doc xml:space="preserve">a bit-mask representing the state of the modifier keys (e.g. Control,
Shift and Alt).</doc>
<type name="NavigationModifierType" c:type="GstNavigationModifierType"/>
</parameter>
</parameters>
</function>
<function name="event_new_touch_motion" c:identifier="gst_navigation_event_new_touch_motion" version="1.22">
<doc xml:space="preserve">Create a new navigation event for a moved touch point.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">a new #GstEvent</doc>
<type name="Gst.Event" c:type="GstEvent*"/>
</return-value>
<parameters>
<parameter name="identifier" transfer-ownership="none">
<doc xml:space="preserve">A number uniquely identifying this touch point. It must
correlate to exactly one previous touch_start event.</doc>
<type name="guint" c:type="guint"/>
</parameter>
<parameter name="x" transfer-ownership="none">
<doc xml:space="preserve">The x coordinate of the touch point.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="y" transfer-ownership="none">
<doc xml:space="preserve">The y coordinate of the touch point.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="pressure" transfer-ownership="none">
<doc xml:space="preserve">Pressure data of the touch point, from 0.0 to 1.0, or NaN if no
data is available.</doc>
<type name="gdouble" c:type="gdouble"/>
</parameter>
<parameter name="state" transfer-ownership="none">
<doc xml:space="preserve">a bit-mask representing the state of the modifier keys (e.g. Control,
Shift and Alt).</doc>
<type name="NavigationModifierType" c:type="GstNavigationModifierType"/>
</parameter>