Commit graph

8 commits

Author SHA1 Message Date
Seungha Yang
2f506e8ddc cudamemory: Add support for virtual memory in pool allocator
Adding new memory pool allocator for virtual memory

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4510>
2023-08-14 13:41:01 +00:00
Seungha Yang
194fd8bb82 cudamemory: Add support for virtual memory management
Adding new CUDA memory allocation methods

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4510>
2023-08-14 13:41:01 +00:00
Seungha Yang
ff3120a38c cudamemory, d3d11memory: Add memory_{get,set}_token_data() methods
Similar to GstMiniObject qdata but new methods will use int64
token value and per object lock, instead of GQuark with global
mutex in qdata

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3884>
2023-02-16 17:49:54 +00:00
Seungha Yang
f6defc0c5b cudamemory: Add gst_cuda_allocator_alloc_wrapped() method
... so that application can pass already allocated CUDA memory

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3884>
2023-02-16 17:49:54 +00:00
Seungha Yang
f44cac1c9f cudamemory: Make CUtexObject object reusable
Create and hold CUtexObject objects in GstCudaMemory so that it can
be reusable

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3884>
2023-02-16 17:49:54 +00:00
Seungha Yang
30d06e03c2 cudamemory: Make GstCudaStream-aware
This will be used for CUDA stream sharing.

* Adding GstCudaPoolAllocator object. The pool allocator will
  control synchronization of allocated memory objects.
* Modify gst_cuda_allocator_alloc() API so that caller can specify/set
  GstCudaStream object for the newly allocated memory.
* GST_CUDA_MEMORY_TRANSFER_NEED_SYNC flag is added in addition to
  existing GST_CUDA_MEMORY_TRANSFER_NEED_{UPLOAD,DOWNLOAD}.
  The flag indicates that any GPU command queued in the CUDA stream
  may not be finished yet, and caller should take care of the
  synchronization.
  The flag is controlled by GstCudaMemory object if the memory holds
  GstCudaStream. (Otherwise, GstCudaMemory will do synchronization
  as before this commit). Specifically, GstCudaMemory object will set
  the new flag automatically when memory is mapped with
  (GST_MAP_CUDA | GST_MAP_WRITE) flags. Caller will need to unset
  the flag via GST_MEMORY_FLAG_UNSET() if it's already synchronized
  by client code.
* gst_cuda_memory_sync() helper function is added to perform synchronization
* Why not use CUevent object to keep track of synchronization status?
  CUDA provides fence-like interface already via CUevent object,
  but cuEventRecord/cuEventQuery APIs are not zero-cost operations.
  Instead, in this version, the status is tracked by using map and
  object flags.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3629>
2023-02-03 15:27:42 +00:00
Seungha Yang
661b5f60c6 cuda: Provide single header include entry point
Add "gstcuda.h" header file

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3629>
2023-02-03 15:27:42 +00:00
Thibault Saunier
c033f8fad2 cuda: Factor out a public GstCUDA library
So applications and elements implemented outside GStreamer can reuse
our infrastructure

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1472>
2022-04-19 16:39:43 +00:00
Renamed from subprojects/gst-plugins-bad/sys/nvcodec/gstcudamemory.h (Browse further)