gstreamer/girs/GstAllocators-1.0.gir

<!-- 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"/>
  <package name="gstreamer-allocators-1.0"/>
  <c:include name="gst/allocators/allocators.h"/>
  <namespace name="GstAllocators" version="1.0" shared-library="libgstallocators-1.0.so.0" c:identifier-prefixes="Gst" c:symbol-prefixes="gst">
    <constant name="ALLOCATOR_DMABUF" value="dmabuf" c:type="GST_ALLOCATOR_DMABUF">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h"/>
      <type name="utf8" c:type="gchar*"/>
    </constant>
    <constant name="ALLOCATOR_FD" value="fd" c:type="GST_ALLOCATOR_FD">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h"/>
      <type name="utf8" c:type="gchar*"/>
    </constant>
    <constant name="ALLOCATOR_SHM" value="shm" c:type="GST_ALLOCATOR_SHM" version="1.24">
      <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstshmallocator.h">Name of this allocator, to be used for example with gst_allocator_find() and
gst_memory_is_type().</doc>
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstshmallocator.h"/>
      <type name="utf8" c:type="gchar*"/>
    </constant>
    <constant name="CAPS_FEATURE_MEMORY_DMABUF" value="memory:DMABuf" c:type="GST_CAPS_FEATURE_MEMORY_DMABUF" version="1.12">
      <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h">Constant that defines the caps feature name for DMA buffer sharing.

It has to be used for non-mappable dma-buf only, i.e. when the underlying
memory is not mappable to user space. Or when the mapped memory contains
non meaningful data. It can be the case for protected content or when the
user wants explicitly avoid any software post processing.

In these cases all elements between the exported and the importer has to work
in passthrough mode. This is done by adding this caps feature.

When the memory is mappable for read and write requests then it is assumes
to be a fast path and so this caps feature should not be used. Though
according to the dma-buf protocol, while it is mapped it prevents the
exporter to migrate the buffer.

This caps feature should not serve at all the purpose of selecting the
@GST_ALLOCATOR_DMABUF allocator during caps negotiation.
When the exporter is the upstream element from the importer point of view,
the exporter should try to map the dma buffer at runtime (preferably during
decide_allocation phase). When it succeeds for #GST_MAP_READWRITE this caps
feature should not be used. This allows scalers, color converts and any image
processing filters to work directly on the dma buffer.
In this case the importer element should check all incoming memory using
gst_is_dmabuf_memory().</doc>
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h"/>
      <type name="utf8" c:type="gchar*"/>
    </constant>
    <function-macro name="DMABUF_ALLOCATOR" c:identifier="GST_DMABUF_ALLOCATOR" introspectable="0">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h"/>
      <parameters>
        <parameter name="obj">
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="DMABUF_ALLOCATOR_CAST" c:identifier="GST_DMABUF_ALLOCATOR_CAST" introspectable="0">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h"/>
      <parameters>
        <parameter name="obj">
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="DMABUF_ALLOCATOR_CLASS" c:identifier="GST_DMABUF_ALLOCATOR_CLASS" introspectable="0">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h"/>
      <parameters>
        <parameter name="klass">
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="DMABUF_ALLOCATOR_GET_CLASS" c:identifier="GST_DMABUF_ALLOCATOR_GET_CLASS" introspectable="0">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h"/>
      <parameters>
        <parameter name="obj">
        </parameter>
      </parameters>
    </function-macro>
    <class name="DRMDumbAllocator" c:symbol-prefix="drm_dumb_allocator" c:type="GstDRMDumbAllocator" version="1.24" parent="Gst.Allocator" glib:type-name="GstDRMDumbAllocator" glib:get-type="gst_drm_dumb_allocator_get_type" glib:type-struct="DRMDumbAllocatorClass">
      <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.h">Private intance object for #GstDRMDumbAllocator.</doc>
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.h"/>
      <constructor name="new_with_device_path" c:identifier="gst_drm_dumb_allocator_new_with_device_path" version="1.24">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">Creates a new #GstDRMDumbAllocator for the specific device path. This
function can fail if the path does not exist, is not a DRM device or if
the DRM device doesnot support DUMB allocation.</doc>
        <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.h"/>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">a new DRM Dumb allocator. Use gst_object_unref()
  to release the allocator after usage.</doc>
          <type name="Gst.Allocator" c:type="GstAllocator*"/>
        </return-value>
        <parameters>
          <parameter name="drm_device_path" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">path to the DRM device to open</doc>
            <type name="filename" c:type="const gchar*"/>
          </parameter>
        </parameters>
      </constructor>
      <constructor name="new_with_fd" c:identifier="gst_drm_dumb_allocator_new_with_fd" version="1.24">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">Creates a new #GstDRMDumbAllocator for the specific file desciptor. This
function can fail if the file descriptor is not a DRM device or if
the DRM device does not support DUMB allocation.</doc>
        <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.h"/>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">a new DRM Dumb allocator. Use gst_object_unref()
  to release the allocator after usage.</doc>
          <type name="Gst.Allocator" c:type="GstAllocator*"/>
        </return-value>
        <parameters>
          <parameter name="drm_fd" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">file descriptor of the DRM device</doc>
            <type name="gint" c:type="gint"/>
          </parameter>
        </parameters>
      </constructor>
      <method name="alloc" c:identifier="gst_drm_dumb_allocator_alloc" version="1.24">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">Allocated a DRM buffer object for the specific @drm_fourcc, @width and
@height. Note that the DRM Dumb allocation interface is agnostic to the
pixel format. This @drm_fourcc is converted into a bpp (bit-per-pixel)
number and the height is scaled according to the sub-sampling.</doc>
        <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.h"/>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">a new DRM Dumb #GstMemory. Use gst_memory_unref()
  to release the memory after usage.</doc>
          <type name="Gst.Memory" c:type="GstMemory*"/>
        </return-value>
        <parameters>
          <instance-parameter name="allocator" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">the allocator instance</doc>
            <type name="DRMDumbAllocator" c:type="GstAllocator*"/>
          </instance-parameter>
          <parameter name="drm_fourcc" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">the DRM format to allocate for</doc>
            <type name="guint32" c:type="guint32"/>
          </parameter>
          <parameter name="width" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">padded width for this allocation</doc>
            <type name="guint32" c:type="guint32"/>
          </parameter>
          <parameter name="height" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">padded height for this allocation</doc>
            <type name="guint32" c:type="guint32"/>
          </parameter>
          <parameter name="out_pitch" direction="out" caller-allocates="0" transfer-ownership="full">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">the pitch as returned by the driver</doc>
            <type name="guint32" c:type="guint32*"/>
          </parameter>
        </parameters>
      </method>
      <method name="has_prime_export" c:identifier="gst_drm_dumb_allocator_has_prime_export" version="1.24">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">This function allow verifying if the driver support dma-buf exportation.</doc>
        <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.h"/>
        <return-value transfer-ownership="none">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">%TRUE if the allocator support exporting dma-buf.</doc>
          <type name="gboolean" c:type="gboolean"/>
        </return-value>
        <parameters>
          <instance-parameter name="allocator" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">the #GstAllocator</doc>
            <type name="DRMDumbAllocator" c:type="GstAllocator*"/>
          </instance-parameter>
        </parameters>
      </method>
      <property name="drm-device-path" version="1.24" writable="1" construct-only="1" transfer-ownership="none">
        <type name="filename" c:type="gchar*"/>
      </property>
      <property name="drm-fd" version="1.24" writable="1" construct-only="1" transfer-ownership="none">
        <type name="gint" c:type="gint"/>
      </property>
    </class>
    <record name="DRMDumbAllocatorClass" c:type="GstDRMDumbAllocatorClass" glib:is-gtype-struct-for="DRMDumbAllocator">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.h"/>
      <field name="parent_class" version="1.24">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.h">Parent Class.</doc>
        <type name="Gst.AllocatorClass" c:type="GstAllocatorClass"/>
      </field>
    </record>
    <class name="DmaBufAllocator" c:symbol-prefix="dmabuf_allocator" c:type="GstDmaBufAllocator" version="1.12" parent="FdAllocator" glib:type-name="GstDmaBufAllocator" glib:get-type="gst_dmabuf_allocator_get_type" glib:type-struct="DmaBufAllocatorClass">
      <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h">Base class for allocators with dmabuf-backed memory</doc>
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h"/>
      <constructor name="new" c:identifier="gst_dmabuf_allocator_new" version="1.2">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">Return a new dmabuf allocator.</doc>
        <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h"/>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">a new dmabuf allocator. Use gst_object_unref() to
release the allocator after usage</doc>
          <type name="Gst.Allocator" c:type="GstAllocator*"/>
        </return-value>
      </constructor>
      <function name="alloc" c:identifier="gst_dmabuf_allocator_alloc" version="1.2">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">Return a %GstMemory that wraps a dmabuf file descriptor.</doc>
        <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h"/>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">a GstMemory based on @allocator.
When the buffer will be released dmabuf allocator will close the @fd.
The memory is only mmapped on gst_buffer_map() request.</doc>
          <type name="Gst.Memory" c:type="GstMemory*"/>
        </return-value>
        <parameters>
          <parameter name="allocator" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">allocator to be used for this memory</doc>
            <type name="Gst.Allocator" c:type="GstAllocator*"/>
          </parameter>
          <parameter name="fd" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">dmabuf file descriptor</doc>
            <type name="gint" c:type="gint"/>
          </parameter>
          <parameter name="size" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">memory size</doc>
            <type name="gsize" c:type="gsize"/>
          </parameter>
        </parameters>
      </function>
      <function name="alloc_with_flags" c:identifier="gst_dmabuf_allocator_alloc_with_flags" version="1.16">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">Return a %GstMemory that wraps a dmabuf file descriptor.</doc>
        <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h"/>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">a GstMemory based on @allocator.

When the buffer will be released the allocator will close the @fd unless
the %GST_FD_MEMORY_FLAG_DONT_CLOSE flag is specified.
The memory is only mmapped on gst_buffer_mmap() request.</doc>
          <type name="Gst.Memory" c:type="GstMemory*"/>
        </return-value>
        <parameters>
          <parameter name="allocator" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">allocator to be used for this memory</doc>
            <type name="Gst.Allocator" c:type="GstAllocator*"/>
          </parameter>
          <parameter name="fd" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">dmabuf file descriptor</doc>
            <type name="gint" c:type="gint"/>
          </parameter>
          <parameter name="size" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">memory size</doc>
            <type name="gsize" c:type="gsize"/>
          </parameter>
          <parameter name="flags" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">extra #GstFdMemoryFlags</doc>
            <type name="FdMemoryFlags" c:type="GstFdMemoryFlags"/>
          </parameter>
        </parameters>
      </function>
      <field name="parent">
        <type name="FdAllocator" c:type="GstFdAllocator"/>
      </field>
      <field name="_gst_reserved" readable="0" private="1">
        <array zero-terminated="0" fixed-size="4">
          <type name="gpointer" c:type="gpointer"/>
        </array>
      </field>
    </class>
    <record name="DmaBufAllocatorClass" c:type="GstDmaBufAllocatorClass" glib:is-gtype-struct-for="DmaBufAllocator">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h"/>
      <field name="parent_class">
        <type name="FdAllocatorClass" c:type="GstFdAllocatorClass"/>
      </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>
    <function-macro name="FD_ALLOCATOR" c:identifier="GST_FD_ALLOCATOR" introspectable="0">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h"/>
      <parameters>
        <parameter name="obj">
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="FD_ALLOCATOR_CAST" c:identifier="GST_FD_ALLOCATOR_CAST" introspectable="0">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h"/>
      <parameters>
        <parameter name="obj">
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="FD_ALLOCATOR_CLASS" c:identifier="GST_FD_ALLOCATOR_CLASS" introspectable="0">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h"/>
      <parameters>
        <parameter name="klass">
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="FD_ALLOCATOR_GET_CLASS" c:identifier="GST_FD_ALLOCATOR_GET_CLASS" introspectable="0">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h"/>
      <parameters>
        <parameter name="obj">
        </parameter>
      </parameters>
    </function-macro>
    <class name="FdAllocator" c:symbol-prefix="fd_allocator" c:type="GstFdAllocator" version="1.6" parent="Gst.Allocator" glib:type-name="GstFdAllocator" glib:get-type="gst_fd_allocator_get_type" glib:type-struct="FdAllocatorClass">
      <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h">Base class for allocators with fd-backed memory</doc>
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h"/>
      <constructor name="new" c:identifier="gst_fd_allocator_new" version="1.6">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.c">Return a new fd allocator.</doc>
        <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h"/>
        <return-value transfer-ownership="full">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.c">a new fd allocator. Use gst_object_unref() to
release the allocator after usage</doc>
          <type name="Gst.Allocator" c:type="GstAllocator*"/>
        </return-value>
      </constructor>
      <function name="alloc" c:identifier="gst_fd_allocator_alloc" version="1.6">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.c">Return a %GstMemory that wraps a generic file descriptor.</doc>
        <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h"/>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.c">a GstMemory based on @allocator.
When the buffer will be released the allocator will close the @fd unless
the %GST_FD_MEMORY_FLAG_DONT_CLOSE flag is specified.
The memory is only mmapped on gst_buffer_map() request.</doc>
          <type name="Gst.Memory" c:type="GstMemory*"/>
        </return-value>
        <parameters>
          <parameter name="allocator" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.c">allocator to be used for this memory</doc>
            <type name="Gst.Allocator" c:type="GstAllocator*"/>
          </parameter>
          <parameter name="fd" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.c">file descriptor</doc>
            <type name="gint" c:type="gint"/>
          </parameter>
          <parameter name="size" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.c">memory size</doc>
            <type name="gsize" c:type="gsize"/>
          </parameter>
          <parameter name="flags" transfer-ownership="none">
            <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.c">extra #GstFdMemoryFlags</doc>
            <type name="FdMemoryFlags" c:type="GstFdMemoryFlags"/>
          </parameter>
        </parameters>
      </function>
      <field name="parent">
        <type name="Gst.Allocator" c:type="GstAllocator"/>
      </field>
    </class>
    <record name="FdAllocatorClass" c:type="GstFdAllocatorClass" glib:is-gtype-struct-for="FdAllocator">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h"/>
      <field name="parent_class">
        <type name="Gst.AllocatorClass" c:type="GstAllocatorClass"/>
      </field>
    </record>
    <bitfield name="FdMemoryFlags" version="1.6" c:type="GstFdMemoryFlags">
      <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h">Various flags to control the operation of the fd backed memory.</doc>
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h"/>
      <member name="none" value="0" c:identifier="GST_FD_MEMORY_FLAG_NONE">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h">no flag</doc>
      </member>
      <member name="keep_mapped" value="1" c:identifier="GST_FD_MEMORY_FLAG_KEEP_MAPPED">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h">once the memory is mapped,
       keep it mapped until the memory is destroyed.</doc>
      </member>
      <member name="map_private" value="2" c:identifier="GST_FD_MEMORY_FLAG_MAP_PRIVATE">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h">do a private mapping instead of
       the default shared mapping.</doc>
      </member>
      <member name="dont_close" value="4" c:identifier="GST_FD_MEMORY_FLAG_DONT_CLOSE">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h">don't close the file descriptor when
       the memory is freed. Since: 1.10</doc>
      </member>
    </bitfield>
    <function-macro name="IS_DMABUF_ALLOCATOR" c:identifier="GST_IS_DMABUF_ALLOCATOR" introspectable="0">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h"/>
      <parameters>
        <parameter name="obj">
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="IS_DMABUF_ALLOCATOR_CLASS" c:identifier="GST_IS_DMABUF_ALLOCATOR_CLASS" introspectable="0">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h"/>
      <parameters>
        <parameter name="klass">
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="IS_FD_ALLOCATOR" c:identifier="GST_IS_FD_ALLOCATOR" introspectable="0">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h"/>
      <parameters>
        <parameter name="obj">
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="IS_FD_ALLOCATOR_CLASS" c:identifier="GST_IS_FD_ALLOCATOR_CLASS" introspectable="0">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h"/>
      <parameters>
        <parameter name="klass">
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="PHYS_MEMORY_ALLOCATOR_CAST" c:identifier="GST_PHYS_MEMORY_ALLOCATOR_CAST" introspectable="0">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstphysmemory.h"/>
      <parameters>
        <parameter name="obj">
        </parameter>
      </parameters>
    </function-macro>
    <function-macro name="PHYS_MEMORY_ALLOCATOR_GET_INTERFACE" c:identifier="GST_PHYS_MEMORY_ALLOCATOR_GET_INTERFACE" introspectable="0">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstphysmemory.h"/>
      <parameters>
        <parameter name="obj">
        </parameter>
      </parameters>
    </function-macro>
    <interface name="PhysMemoryAllocator" c:symbol-prefix="phys_memory_allocator" c:type="GstPhysMemoryAllocator" version="1.14" glib:type-name="GstPhysMemoryAllocator" glib:get-type="gst_phys_memory_allocator_get_type" glib:type-struct="PhysMemoryAllocatorInterface">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstphysmemory.h"/>
      <prerequisite name="Gst.Allocator"/>
      <virtual-method name="get_phys_addr">
        <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstphysmemory.h"/>
        <return-value transfer-ownership="none">
          <type name="guintptr" c:type="guintptr"/>
        </return-value>
        <parameters>
          <instance-parameter name="allocator" transfer-ownership="none">
            <type name="PhysMemoryAllocator" c:type="GstPhysMemoryAllocator*"/>
          </instance-parameter>
          <parameter name="mem" transfer-ownership="none">
            <type name="Gst.Memory" c:type="GstMemory*"/>
          </parameter>
        </parameters>
      </virtual-method>
    </interface>
    <record name="PhysMemoryAllocatorInterface" c:type="GstPhysMemoryAllocatorInterface" glib:is-gtype-struct-for="PhysMemoryAllocator" version="1.14">
      <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstphysmemory.h">Marker interface for allocators with physical address backed memory</doc>
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstphysmemory.h"/>
      <field name="parent_iface" readable="0" private="1">
        <type name="GObject.TypeInterface" c:type="GTypeInterface"/>
      </field>
      <field name="get_phys_addr">
        <callback name="get_phys_addr">
          <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstphysmemory.h"/>
          <return-value transfer-ownership="none">
            <type name="guintptr" c:type="guintptr"/>
          </return-value>
          <parameters>
            <parameter name="allocator" transfer-ownership="none">
              <type name="PhysMemoryAllocator" c:type="GstPhysMemoryAllocator*"/>
            </parameter>
            <parameter name="mem" transfer-ownership="none">
              <type name="Gst.Memory" c:type="GstMemory*"/>
            </parameter>
          </parameters>
        </callback>
      </field>
    </record>
    <class name="ShmAllocator" c:symbol-prefix="shm_allocator" c:type="GstShmAllocator" version="1.24" parent="FdAllocator" glib:type-name="GstShmAllocator" glib:get-type="gst_shm_allocator_get_type" glib:type-struct="ShmAllocatorClass">
      <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstshmallocator.c">This is a subclass of #GstFdAllocator that implements the
gst_allocator_alloc() method using `memfd_create()` when available, POSIX
`shm_open()` otherwise. Platforms not supporting any of those (Windows) will
always return %NULL.

Note that allocating new shared memories has a significant performance cost,
it is thus recommended to keep a pool of pre-allocated #GstMemory, using
#GstBufferPool. For that reason, this allocator has the
%GST_ALLOCATOR_FLAG_NO_COPY flag set.</doc>
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstshmallocator.h"/>
      <function name="get" c:identifier="gst_shm_allocator_get" version="1.24">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstshmallocator.c">Get the #GstShmAllocator singleton previously registered with
gst_shm_allocator_init_once().</doc>
        <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstshmallocator.h"/>
        <return-value transfer-ownership="full" nullable="1">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstshmallocator.c">a #GstAllocator or %NULL if
gst_shm_allocator_init_once() has not been previously called.</doc>
          <type name="Gst.Allocator" c:type="GstAllocator*"/>
        </return-value>
      </function>
      <function name="init_once" c:identifier="gst_shm_allocator_init_once" version="1.24">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstshmallocator.c">Register a #GstShmAllocator using gst_allocator_register() with the name
%GST_ALLOCATOR_SHM. This is no-op after the first call.</doc>
        <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstshmallocator.h"/>
        <return-value transfer-ownership="none">
          <type name="none" c:type="void"/>
        </return-value>
      </function>
    </class>
    <record name="ShmAllocatorClass" c:type="GstShmAllocatorClass" glib:is-gtype-struct-for="ShmAllocator">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstshmallocator.h"/>
      <field name="parent_class" version="1.24">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstshmallocator.h">Parent Class.</doc>
        <type name="FdAllocatorClass" c:type="GstFdAllocatorClass"/>
      </field>
    </record>
    <function name="dmabuf_memory_get_fd" c:identifier="gst_dmabuf_memory_get_fd" version="1.2">
      <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">Return the file descriptor associated with @mem.</doc>
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h"/>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">the file descriptor associated with the memory, or -1.  The file
    descriptor is still owned by the GstMemory.  Use dup to take a copy
    if you intend to use it beyond the lifetime of this GstMemory.</doc>
        <type name="gint" c:type="gint"/>
      </return-value>
      <parameters>
        <parameter name="mem" transfer-ownership="none">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">the memory to get the file descriptor</doc>
          <type name="Gst.Memory" c:type="GstMemory*"/>
        </parameter>
      </parameters>
    </function>
    <function name="drm_dumb_memory_export_dmabuf" c:identifier="gst_drm_dumb_memory_export_dmabuf" version="1.24">
      <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">Exports a DMABuf from the DRM Bumb buffer object. One can check if this
feature is supported using gst_drm_dumb_allocator_has_prime_export();</doc>
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.h"/>
      <return-value transfer-ownership="full">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">a #GstMemory from #GstDmaBufAllocator wrapping the exported dma-buf
   file descriptor.</doc>
        <type name="Gst.Memory" c:type="GstMemory*"/>
      </return-value>
      <parameters>
        <parameter name="mem" transfer-ownership="none">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">the memory to export from</doc>
          <type name="Gst.Memory" c:type="GstMemory*"/>
        </parameter>
      </parameters>
    </function>
    <function name="drm_dumb_memory_get_handle" c:identifier="gst_drm_dumb_memory_get_handle" version="1.24">
      <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">Return the DRM buffer object handle associated with @mem.</doc>
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.h"/>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">the DRM buffer object handle associated with the memory, or 0.
    The handle is still owned by the GstMemory and cannot be used
    beyond the lifetime of this GstMemory unless it is being passed
    to DRM driver, which does handle a refcount internally.</doc>
        <type name="guint32" c:type="guint32"/>
      </return-value>
      <parameters>
        <parameter name="mem" transfer-ownership="none">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">the memory to get the handle from</doc>
          <type name="Gst.Memory" c:type="GstMemory*"/>
        </parameter>
      </parameters>
    </function>
    <function name="fd_memory_get_fd" c:identifier="gst_fd_memory_get_fd" version="1.6">
      <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.c">Get the fd from @mem. Call gst_is_fd_memory() to check if @mem has
an fd.</doc>
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h"/>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.c">the fd of @mem or -1 when there is no fd on @mem</doc>
        <type name="gint" c:type="gint"/>
      </return-value>
      <parameters>
        <parameter name="mem" transfer-ownership="none">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.c">#GstMemory</doc>
          <type name="Gst.Memory" c:type="GstMemory*"/>
        </parameter>
      </parameters>
    </function>
    <function name="is_dmabuf_memory" c:identifier="gst_is_dmabuf_memory" version="1.2">
      <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">Check if @mem is dmabuf memory.</doc>
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.h"/>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">%TRUE if @mem is dmabuf memory, otherwise %FALSE</doc>
        <type name="gboolean" c:type="gboolean"/>
      </return-value>
      <parameters>
        <parameter name="mem" transfer-ownership="none">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdmabuf.c">the memory to be check</doc>
          <type name="Gst.Memory" c:type="GstMemory*"/>
        </parameter>
      </parameters>
    </function>
    <function name="is_drm_dumb_memory" c:identifier="gst_is_drm_dumb_memory" version="1.24">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.h"/>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">%TRUE if @mem is DRM Dumb memory, otherwise %FALSE</doc>
        <type name="gboolean" c:type="gboolean"/>
      </return-value>
      <parameters>
        <parameter name="mem" transfer-ownership="none">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstdrmdumb.c">the memory to be checked</doc>
          <type name="Gst.Memory" c:type="GstMemory*"/>
        </parameter>
      </parameters>
    </function>
    <function name="is_fd_memory" c:identifier="gst_is_fd_memory" version="1.6">
      <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.c">Check if @mem is memory backed by an fd</doc>
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.h"/>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.c">%TRUE when @mem has an fd that can be retrieved with
gst_fd_memory_get_fd().</doc>
        <type name="gboolean" c:type="gboolean"/>
      </return-value>
      <parameters>
        <parameter name="mem" transfer-ownership="none">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstfdmemory.c">#GstMemory</doc>
          <type name="Gst.Memory" c:type="GstMemory*"/>
        </parameter>
      </parameters>
    </function>
    <function name="is_phys_memory" c:identifier="gst_is_phys_memory" version="1.14">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstphysmemory.h"/>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstphysmemory.c">whether the memory at @mem is backed by physical memory</doc>
        <type name="gboolean" c:type="gboolean"/>
      </return-value>
      <parameters>
        <parameter name="mem" transfer-ownership="none">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstphysmemory.c">a #GstMemory</doc>
          <type name="Gst.Memory" c:type="GstMemory*"/>
        </parameter>
      </parameters>
    </function>
    <function name="phys_memory_get_phys_addr" c:identifier="gst_phys_memory_get_phys_addr" version="1.14">
      <source-position filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstphysmemory.h"/>
      <return-value transfer-ownership="none">
        <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstphysmemory.c">Physical memory address that is backing @mem, or 0 if none</doc>
        <type name="guintptr" c:type="guintptr"/>
      </return-value>
      <parameters>
        <parameter name="mem" transfer-ownership="none">
          <doc xml:space="preserve" filename="../subprojects/gst-plugins-base/gst-libs/gst/allocators/gstphysmemory.c">a #GstMemory</doc>
          <type name="Gst.Memory" c:type="GstMemory*"/>
        </parameter>
      </parameters>
    </function>
  </namespace>
</repository>