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| author | Benjamin Gaignard <benjamin.gaignard@collabora.com> | 2024-03-14 16:32:21 +0100 |
|---|---|---|
| committer | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2024-03-25 12:00:44 +0100 |
| commit | 6e423b75d0492e82fa6f057c615427ebd7ebe76c (patch) | |
| tree | 87c3045393a3565f10c94355897103b1cf04b454 /include/media | |
| parent | f5131d5ce49ef942a3bda5f4a0f6228b1ea40eee (diff) | |
| download | lwn-6e423b75d0492e82fa6f057c615427ebd7ebe76c.tar.gz lwn-6e423b75d0492e82fa6f057c615427ebd7ebe76c.zip | |
media: core: Rework how create_buf index returned value is computed
When REMOVE_BUFS will be introduced holes could created in bufs array.
To be able to reuse these unused indices reworking how create->index
is set is mandatory.
Let __vb2_queue_alloc() decide which first index is correct and
forward this to the caller.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/videobuf2-core.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index 4a8b9135cec8..42526e289c8e 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -826,6 +826,8 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory, * @count: requested buffer count. * @requested_planes: number of planes requested. * @requested_sizes: array with the size of the planes. + * @first_index: index of the first created buffer, all allocated buffers have + * indices in the range [first_index..first_index+count-1] * * Videobuf2 core helper to implement VIDIOC_CREATE_BUFS() operation. It is * called internally by VB2 by an API-specific handler, like @@ -842,7 +844,8 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory, int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory, unsigned int flags, unsigned int *count, unsigned int requested_planes, - const unsigned int requested_sizes[]); + const unsigned int requested_sizes[], + unsigned int *first_index); /** * vb2_core_prepare_buf() - Pass ownership of a buffer from userspace |