Subversion Repositories test_project

/*

 * helper functions for vmalloc capture buffers

 *

 * The functions expect the hardware being able to scatter gatter

 * (i.e. the buffers are not linear in physical memory, but fragmented

 * into PAGE_SIZE chunks).  They also assume the driver does not need

 * to touch the video data.

 *

 * (c) 2007 Mauro Carvalho Chehab, <mchehab@infradead.org>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2

 */

#include <media/videobuf-core.h>

/* --------------------------------------------------------------------- */

struct videbuf_vmalloc_memory

{

        u32                 magic;

        void                *vmalloc;

        /* remap_vmalloc_range seems to need to run after mmap() on some cases */

        struct vm_area_struct *vma;

};

void videobuf_queue_vmalloc_init(struct videobuf_queue* q,

                         struct videobuf_queue_ops *ops,

                         void *dev,

                         spinlock_t *irqlock,

                         enum v4l2_buf_type type,

                         enum v4l2_field field,

                         unsigned int msize,

                         void *priv);

void *videobuf_to_vmalloc (struct videobuf_buffer *buf);

void videobuf_vmalloc_free (struct videobuf_buffer *buf);