VA allocators

VaAllocator

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──Gst.Allocator
                ╰──VaAllocator

Since : 1.22

GstVa.VaAllocator.prototype.new

function GstVa.VaAllocator.prototype.new(display: GstVa.VaDisplay, surface_formats: [ Number ]): {
    // javascript wrapper for 'gst_va_allocator_new'
}

Instanciate a new pooled Gst.Allocator backed by VASurfaceID.

Since : 1.22

GstVa.VaAllocator.prototype.alloc

function GstVa.VaAllocator.prototype.alloc(allocator: Gst.Allocator): {
    // javascript wrapper for 'gst_va_allocator_alloc'
}

Allocate a new VASurfaceID backed Gst.Memory.

Since : 1.22

GstVa.VaAllocator.prototype.flush

function GstVa.VaAllocator.prototype.flush(allocator: Gst.Allocator): {
    // javascript wrapper for 'gst_va_allocator_flush'
}

Removes all the memories in allocator's pool.

Since : 1.22

GstVa.VaAllocator.prototype.get_format

function GstVa.VaAllocator.prototype.get_format(allocator: Gst.Allocator): {
    // javascript wrapper for 'gst_va_allocator_get_format'
}

Gets current internal configuration of allocator.

Since : 1.22

GstVa.VaAllocator.prototype.peek_display

function GstVa.VaAllocator.prototype.peek_display(allocator: Gst.Allocator): {
    // javascript wrapper for 'gst_va_allocator_peek_display'
}

Since : 1.22

GstVa.VaAllocator.prototype.prepare_buffer

function GstVa.VaAllocator.prototype.prepare_buffer(allocator: Gst.Allocator, buffer: Gst.Buffer): {
    // javascript wrapper for 'gst_va_allocator_prepare_buffer'
}

This method will populate buffer with pooled VASurfaceID memories. It doesn't allocate new VASurfacesID.

Since : 1.22

GstVa.VaAllocator.prototype.set_format

function GstVa.VaAllocator.prototype.set_format(allocator: Gst.Allocator, info: GstVideo.VideoInfo, usage_hint: Number, feat_use_derived: GstVa.VaFeature): {
    // javascript wrapper for 'gst_va_allocator_set_format'
}

Sets the configuration defined by info, usage_hint and use_derived for allocator, and it tries the configuration, if allocator has not allocated memories yet.

If allocator has memory allocated already, and frame size and format in info are the same as currently configured in allocator, the rest of info parameters are updated internally.

Since : 1.22

GstVa.VaAllocator.prototype.setup_buffer

function GstVa.VaAllocator.prototype.setup_buffer(allocator: Gst.Allocator, buffer: Gst.Buffer): {
    // javascript wrapper for 'gst_va_allocator_setup_buffer'
}

Populates an empty buffer with a VASuface backed Gst.Memory.

Since : 1.22

VaDmabufAllocator

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──Gst.Allocator
                ╰──VaDmabufAllocator

Since : 1.22

GstVa.VaDmabufAllocator.prototype.new

function GstVa.VaDmabufAllocator.prototype.new(display: GstVa.VaDisplay): {
    // javascript wrapper for 'gst_va_dmabuf_allocator_new'
}

Instanciate a new pooled allocator backed with both DMABuf and VASurfaceID.

Since : 1.22

GstVa.VaDmabufAllocator.prototype.flush

function GstVa.VaDmabufAllocator.prototype.flush(allocator: Gst.Allocator): {
    // javascript wrapper for 'gst_va_dmabuf_allocator_flush'
}

Removes all the memories in allocator's pool.

Since : 1.22

GstVa.VaDmabufAllocator.prototype.get_format

function GstVa.VaDmabufAllocator.prototype.get_format(allocator: Gst.Allocator): {
    // javascript wrapper for 'gst_va_dmabuf_allocator_get_format'
}

Gets current internal configuration of allocator.

Since : 1.22

GstVa.VaDmabufAllocator.prototype.prepare_buffer

function GstVa.VaDmabufAllocator.prototype.prepare_buffer(allocator: Gst.Allocator, buffer: Gst.Buffer): {
    // javascript wrapper for 'gst_va_dmabuf_allocator_prepare_buffer'
}

This method will populate buffer with pooled VASurfaceID/DMABuf memories. It doesn't allocate new VASurfacesID.

Since : 1.22

GstVa.VaDmabufAllocator.prototype.set_format

function GstVa.VaDmabufAllocator.prototype.set_format(allocator: Gst.Allocator, usage_hint: Number): {
    // javascript wrapper for 'gst_va_dmabuf_allocator_set_format'
}

Sets the configuration defined by info and usage_hint for allocator, and it tries the configuration, if allocator has not allocated memories yet.

If allocator has memory allocated already, and frame size, format and modifier in info are the same as currently configured in allocator, the rest of info parameters are updated internally.

Since : 1.22

GstVa.VaDmabufAllocator.prototype.setup_buffer

function GstVa.VaDmabufAllocator.prototype.setup_buffer(allocator: Gst.Allocator, buffer: Gst.Buffer): {
    // javascript wrapper for 'gst_va_dmabuf_allocator_setup_buffer'
}

This function creates a new VASurfaceID and exposes its DMABufs, later it populates the buffer with those DMABufs.

Return: true if buffer is populated correctly; false otherwise.

Since : 1.22

GstVa.prototype.va_buffer_create_aux_surface

function GstVa.prototype.va_buffer_create_aux_surface(buffer: Gst.Buffer): {
    // javascript wrapper for 'gst_va_buffer_create_aux_surface'
}

Creates a new VASurfaceID with buffer's allocator and attached it to it.

This method is used only by plugin's internal VA decoder.

Since : 1.22

GstVa.prototype.va_buffer_peek_display

function GstVa.prototype.va_buffer_peek_display(buffer: Gst.Buffer): {
    // javascript wrapper for 'gst_va_buffer_peek_display'
}

Since : 1.22

GstVa.prototype.va_dmabuf_get_modifier_for_format

function GstVa.prototype.va_dmabuf_get_modifier_for_format(display: GstVa.VaDisplay, format: GstVideo.VideoFormat, usage_hint: Number): {
    // javascript wrapper for 'gst_va_dmabuf_get_modifier_for_format'
}

Get the underlying modifier for specified format and usage_hint.

Since : 1.24

GstVa.prototype.va_dmabuf_memories_setup

function GstVa.prototype.va_dmabuf_memories_setup(display: GstVa.VaDisplay, drm_info: GstVideo.VideoInfoDmaDrm, mem: [ Gst.Memory ], fds: [ Number ], offset: [ Number ], usage_hint: Number): {
    // javascript wrapper for 'gst_va_dmabuf_memories_setup'
}

It imports the array of mem, representing a single frame, into a VASurfaceID and it's attached into every mem.

Since : 1.22

GstVa.prototype.va_memory_peek_display

function GstVa.prototype.va_memory_peek_display(mem: Gst.Memory): {
    // javascript wrapper for 'gst_va_memory_peek_display'
}

Since : 1.22

GstVa.ALLOCATOR_VASURFACE

Since : 1.22

GstVa.MAP_VA

Flag indicating that we should map the VASurfaceID instead of to system memory, so users can use libva primitives to operate with that surface.

Since : 1.22