gstcudautils

Since : 1.22

gst_cuda_graphics_resource_map

CUgraphicsResource
gst_cuda_graphics_resource_map (GstCudaGraphicsResource * resource,
                                CUstream stream,
                                CUgraphicsMapResourceFlags flags)

Map previously registered resource with map flags

Parameters:

resource –

stream –

a CUstream

flags –

a CUgraphicsMapResourceFlags

Returns ( [nullable]) –

the CUgraphicsResource if successful or NULL when failed

Since : 1.22

gst_cuda_graphics_resource_register_gl_buffer

gboolean
gst_cuda_graphics_resource_register_gl_buffer (GstCudaGraphicsResource * resource,
                                               guint buffer,
                                               CUgraphicsRegisterFlags flags)

Register the buffer for access by CUDA. Must be called from the gl context thread with current cuda context was pushed on the current thread

Parameters:

resource –

No description available

buffer –

a GL buffer object

flags –

a CUgraphicsRegisterFlags

Returns –

whether buffer was registered or not

Since : 1.22

gst_cuda_graphics_resource_unmap

gst_cuda_graphics_resource_unmap (GstCudaGraphicsResource * resource,
                                  CUstream stream)

Unmap previously mapped resource

Parameters:

resource –

stream –

a CUstream

Since : 1.22

gst_cuda_graphics_resource_unregister

gst_cuda_graphics_resource_unregister (GstCudaGraphicsResource * resource)

Unregister previously registered resource. For GL resource, this method must be called from gl context thread. Also, current cuda context should be pushed on the current thread before calling this method.

Parameters:

resource –

Since : 1.22

Functions

gst_cuda_graphics_resource_new

GstCudaGraphicsResource *
gst_cuda_graphics_resource_new (GstCudaContext * context,
                                GstObject * graphics_context,
                                GstCudaGraphicsResourceType type)

Create new GstCudaGraphicsResource with given context and type

Parameters:

context ( [transfer: none]) –

a GstCudaContext

graphics_context ( [transfer: none][nullable]) –

a graphics API specific context object

type –

a GstCudaGraphicsResourceType of resource registration

Returns –

a new GstCudaGraphicsResource. Free with gst_cuda_graphics_resource_free

Since : 1.22

Functions

gst_context_new_cuda_context

GstContext *
gst_context_new_cuda_context (GstCudaContext * cuda_ctx)

Parameters:

cuda_ctx ( [transfer: none]) –

a GstCudaContext

Returns ( [transfer: full]) –

a new GstContext embedding the cuda_ctx

Since : 1.22

GstCuda.prototype.context_new_cuda_context

function GstCuda.prototype.context_new_cuda_context(cuda_ctx: GstCuda.CudaContext): {
    // javascript wrapper for 'gst_context_new_cuda_context'
}

Parameters:

cuda_ctx (GstCuda.CudaContext) –

Returns (Gst.Context) –

a new Gst.Context embedding the cuda_ctx

Since : 1.22

GstCuda.context_new_cuda_context

def GstCuda.context_new_cuda_context (cuda_ctx):
    #python wrapper for 'gst_context_new_cuda_context'

Parameters:

cuda_ctx (GstCuda.CudaContext) –

Returns (Gst.Context) –

a new Gst.Context embedding the cuda_ctx

Since : 1.22

gst_cuda_create_user_token

gint64
gst_cuda_create_user_token ()

Creates new user token value

Returns –

user token value

Since : 1.24

GstCuda.prototype.cuda_create_user_token

function GstCuda.prototype.cuda_create_user_token(): {
    // javascript wrapper for 'gst_cuda_create_user_token'
}

Creates new user token value

Returns (Number) –

user token value

Since : 1.24

GstCuda.cuda_create_user_token

def GstCuda.cuda_create_user_token ():
    #python wrapper for 'gst_cuda_create_user_token'

Creates new user token value

Returns (int) –

user token value

Since : 1.24

gst_cuda_ensure_element_context

gboolean
gst_cuda_ensure_element_context (GstElement * element,
                                 gint device_id,
                                 GstCudaContext ** cuda_ctx)

Perform the steps necessary for retrieving a GstCudaContext from the surrounding elements or from the application using the GstContext mechanism.

If the content of cuda_ctx is not NULL, then no GstContext query is necessary for GstCudaContext.

Parameters:

element –

the GstElement running the query

device_id –

preferred device-id, pass device_id >=0 when the device_id explicitly required. Otherwise, set -1.

cuda_ctx ( [inout]) –

the resulting GstCudaContext

Returns –

whether a GstCudaContext exists in cuda_ctx

Since : 1.22

GstCuda.prototype.cuda_ensure_element_context

function GstCuda.prototype.cuda_ensure_element_context(element: Gst.Element, device_id: Number, cuda_ctx: GstCuda.CudaContext): {
    // javascript wrapper for 'gst_cuda_ensure_element_context'
}

Perform the steps necessary for retrieving a GstCuda.CudaContext from the surrounding elements or from the application using the Gst.Context mechanism.

If the content of cuda_ctx is not null, then no Gst.Context query is necessary for GstCuda.CudaContext.

Parameters:

element (Gst.Element) –

the Gst.Element running the query

device_id (Number) –

preferred device-id, pass device_id >=0 when the device_id explicitly required. Otherwise, set -1.

cuda_ctx (GstCuda.CudaContext) –

the resulting GstCuda.CudaContext

Returns a tuple made of:

(Number ) –

whether a GstCuda.CudaContext exists in cuda_ctx

cuda_ctx (GstCuda.CudaContext ) –

whether a GstCuda.CudaContext exists in cuda_ctx

Since : 1.22

GstCuda.cuda_ensure_element_context

def GstCuda.cuda_ensure_element_context (element, device_id, cuda_ctx):
    #python wrapper for 'gst_cuda_ensure_element_context'

Perform the steps necessary for retrieving a GstCuda.CudaContext from the surrounding elements or from the application using the Gst.Context mechanism.

If the content of cuda_ctx is not None, then no Gst.Context query is necessary for GstCuda.CudaContext.

Parameters:

element (Gst.Element) –

the Gst.Element running the query

device_id (int) –

preferred device-id, pass device_id >=0 when the device_id explicitly required. Otherwise, set -1.

cuda_ctx (GstCuda.CudaContext) –

the resulting GstCuda.CudaContext

Returns a tuple made of:

(bool ) –

whether a GstCuda.CudaContext exists in cuda_ctx

cuda_ctx (GstCuda.CudaContext ) –

whether a GstCuda.CudaContext exists in cuda_ctx

Since : 1.22

gst_cuda_handle_context_query

gboolean
gst_cuda_handle_context_query (GstElement * element,
                               GstQuery * query,
                               GstCudaContext * cuda_ctx)

Parameters:

element –

a GstElement

query –

a GstQuery of type GST_QUERY_CONTEXT

cuda_ctx ( [transfer: none][nullable]) –

a GstCudaContext

Returns –

Whether the query was successfully responded to from the passed context.

Since : 1.22

GstCuda.prototype.cuda_handle_context_query

function GstCuda.prototype.cuda_handle_context_query(element: Gst.Element, query: Gst.Query, cuda_ctx: GstCuda.CudaContext): {
    // javascript wrapper for 'gst_cuda_handle_context_query'
}

Parameters:

element (Gst.Element) –

query (Gst.Query) –

a Gst.Query of type Gst.QueryType.CONTEXT

cuda_ctx (GstCuda.CudaContext) –

Returns (Number) –

Whether the query was successfully responded to from the passed context.

Since : 1.22

GstCuda.cuda_handle_context_query

def GstCuda.cuda_handle_context_query (element, query, cuda_ctx):
    #python wrapper for 'gst_cuda_handle_context_query'

Parameters:

element (Gst.Element) –

query (Gst.Query) –

a Gst.Query of type Gst.QueryType.CONTEXT

cuda_ctx (GstCuda.CudaContext) –

Returns (bool) –

Whether the query was successfully responded to from the passed context.

Since : 1.22

gst_cuda_handle_set_context

gboolean
gst_cuda_handle_set_context (GstElement * element,
                             GstContext * context,
                             gint device_id,
                             GstCudaContext ** cuda_ctx)

Helper function for implementing set_context() in CUDA capable elements.

Retrieves the GstCudaContext in context and places the result in cuda_ctx.

Parameters:

element –

a GstElement

context –

a GstContext

device_id –

preferred device-id, pass device_id >=0 when the device_id explicitly required. Otherwise, set -1.

cuda_ctx ( [inout][transfer: full]) –

location of a GstCudaContext

Returns –

whether the cuda_ctx could be set successfully

Since : 1.22

GstCuda.prototype.cuda_handle_set_context

function GstCuda.prototype.cuda_handle_set_context(element: Gst.Element, context: Gst.Context, device_id: Number, cuda_ctx: GstCuda.CudaContext): {
    // javascript wrapper for 'gst_cuda_handle_set_context'
}

Helper function for implementing vfunc_set_context() in CUDA capable elements.

Retrieves the GstCuda.CudaContext in context and places the result in cuda_ctx.

Parameters:

element (Gst.Element) –

context (Gst.Context) –

a Gst.Context

device_id (Number) –

preferred device-id, pass device_id >=0 when the device_id explicitly required. Otherwise, set -1.

cuda_ctx (GstCuda.CudaContext) –

location of a GstCuda.CudaContext

Returns a tuple made of:

(Number ) –

whether the cuda_ctx could be set successfully

cuda_ctx (GstCuda.CudaContext ) –

whether the cuda_ctx could be set successfully

Since : 1.22

GstCuda.cuda_handle_set_context

def GstCuda.cuda_handle_set_context (element, context, device_id, cuda_ctx):
    #python wrapper for 'gst_cuda_handle_set_context'

Helper function for implementing do_set_context() in CUDA capable elements.

Retrieves the GstCuda.CudaContext in context and places the result in cuda_ctx.

Parameters:

element (Gst.Element) –