| 1 | |
| 2 | * videobuf2-memops.h - generic memory handling routines for videobuf2
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| 3 | *
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| 4 | * Copyright (C) 2010 Samsung Electronics
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| 5 | *
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| 6 | * Author: Pawel Osciak <[email protected]>
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| 7 | * Marek Szyprowski <[email protected]>
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| 8 | *
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| 9 | * This program is free software; you can redistribute it and/or modify
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| 10 | * it under the terms of the GNU General Public License as published by
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| 11 | * the Free Software Foundation.
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| 12 |
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| 13 |
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| 14 | #ifndef _MEDIA_VIDEOBUF2_MEMOPS_H
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| 15 | #define _MEDIA_VIDEOBUF2_MEMOPS_H
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| 16 |
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| 17 | #include <media/videobuf2-v4l2.h>
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| 18 | #include <linux/mm.h>
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| 19 | #include <linux/refcount.h>
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| 20 |
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| 21 | |
| 22 | * struct vb2_vmarea_handler - common vma refcount tracking handler.
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| 23 | *
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| 24 | * @refcount: pointer to &refcount_t entry in the buffer.
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| 25 | * @put: callback to function that decreases buffer refcount.
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| 26 | * @arg: argument for @put callback.
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| 27 |
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| 28 | struct vb2_vmarea_handler {
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| 29 | refcount_t *refcount;
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| 30 | void (*put)(void *arg);
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| 31 | void *arg;
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| 32 | };
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| 33 |
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| 34 | extern const struct vm_operations_struct vb2_common_vm_ops;
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| 35 |
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| 36 | struct frame_vector *vb2_create_framevec(unsigned long start,
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| 37 | unsigned long length,
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| 38 | bool write);
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| 39 | void vb2_destroy_framevec(struct frame_vector *vec);
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| 40 |
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| 41 | #endif
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