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40 lines
1.1 KiB
40 lines
1.1 KiB
/* |
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* videobuf2-memops.h - generic memory handling routines for videobuf2 |
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* |
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* Copyright (C) 2010 Samsung Electronics |
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* |
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* Author: Pawel Osciak <[email protected]> |
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* Marek Szyprowski <[email protected]> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation. |
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*/ |
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#ifndef _MEDIA_VIDEOBUF2_MEMOPS_H |
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#define _MEDIA_VIDEOBUF2_MEMOPS_H |
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#include <media/videobuf2-v4l2.h> |
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#include <linux/mm.h> |
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/** |
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* struct vb2_vmarea_handler - common vma refcount tracking handler |
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* |
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* @refcount: pointer to refcount entry in the buffer |
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* @put: callback to function that decreases buffer refcount |
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* @arg: argument for @put callback |
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*/ |
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struct vb2_vmarea_handler { |
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atomic_t *refcount; |
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void (*put)(void *arg); |
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void *arg; |
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}; |
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extern const struct vm_operations_struct vb2_common_vm_ops; |
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struct frame_vector *vb2_create_framevec(unsigned long start, |
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unsigned long length, |
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bool write); |
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void vb2_destroy_framevec(struct frame_vector *vec); |
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#endif
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