Remove support for changing `SPA_PROP_live` in node implementations
that supported it, and hard-code `SPA_PROP_live = true`. If a mode
of operation is desired where the data is processed as fast as possible,
it can be achieved by implementing non-driver operation and using the
freewheel driver in pipewire.
When we simply need to change some state for the code executed in the
loop, we can use locked() instead of invoke(). This is more efficient
and avoids some context switches in the normal case.
A spa_node has callback both on the main and data thread, which can
modify the internal state of vulkan_blit_state. Especially critical are
functions, which might drop buffers currently in use. To mitigate this
a read-write lock is used. The data thread shall try to aquire a read
lock before accessing the buffers, while the main thread has to aquire
exclusive access via a write lock before modifying the buffers.
We need a database of pixel format properties to remove hardcoded magic
numbers. This commit creates a simple function to query the bytes per
pixel for common RGBA formats.
This should be promoted to or superseeded by a common spa namespaced
version.
This splots the format enumeration into a helper for dsp and raw pod
creation and a common function for the compute filters.
Counting formats with modifiers will be usefull to announce dsp and
raw formats from the same node.
No functional changes.
Validation of properties is moved from the import and allocation
functions into a separate function. This allows later separation of
modifier informations from the base struct.
This extension is required for the aquire and release barriers
to transfer the buffer ownership from and two an external queue.
This removes a warning from the validation layers.
If the modifier for a format is not fixated yet, we will use vulkan to
fixate a modifier, update the parsed format, change the EnumFormats mask
and exit early. This triggers a new enum_params with EnumFormats and a
new set_param for Format.
