Commit Graph

4 Commits

Author SHA1 Message Date
Harvey Yang
168488275a libcamera: add DmaBufAllocator::exportBuffers()
Add a helper function exportBuffers in DmaBufAllocator to make it easier
to use.

It'll be used in Virtual Pipeline Handler and SoftwareIsp.

Signed-off-by: Harvey Yang <chenghaoyang@chromium.org>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2024-11-20 10:47:27 +00:00
Milan Zamazal
e2cace52d5 libcamera: includes: Remove unused includes
The includes that are not used can be removed.

Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2024-09-02 22:44:38 +03:00
Hans de Goede
ea4baaacc3 libcamera: DmaBufAllocator: Support allocating from /dev/udmabuf
The dma-buf allocator currently allocates from CMA and system heaps.

Extend the dma-buf allocator to support allocating dma-buffers by creating
memfd-s and turning those into dma-buffers using /dev/udmabuf.

The buffers allocated through memfd/udmabuf are not suitable for zero-copy
buffer sharing with other devices.

Co-developed-by: Harvey Yang <chenghaoyang@chromium.org>
Signed-off-by: Harvey Yang <chenghaoyang@chromium.org>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> # Lenovo-x13s
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2024-06-04 16:19:33 +01:00
Hans de Goede
447da4a11f libcamera: Rename DmaHeap class to DmaBufAllocator
Users of the DmaHeap class really just want some way to allocate
dma-buffers from userspace. This can also be done by using /dev/udmabuf
instead of using /dev/dma_heap/*.

Rename DmaHeap class to DmaBufAllocator in preparation of adding
/dev/udmabuf support.

And update the DmaHeap class docs to match including replacing references
to "dma-heap type" with "dma-buf provider".

This is a pure automated rename on the code ('s/DmaHeap/DmaBufAllocator/')
+ file renames + doc updates. There are no functional changes.

The DmaBufAllocator objects in vc4.cpp and software_isp.cpp are left named
dmaHeap_ to keep the changes to those 2 files to a minimum.

Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> # Lenovo-x13s
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2024-06-04 16:19:33 +01:00