C++ (Cpp) __videobuf_mmap_free Examples

Example #1

File: videobuf-core.c Project: PennPanda/linux-repo

int videobuf_mmap_free(struct videobuf_queue *q)
{
	int ret;
	mutex_lock(&q->lock);
	ret = __videobuf_mmap_free(q);
	mutex_unlock(&q->lock);
	return ret;
}

Example #2

File: videobuf-core.c Project: mephistophilis/samsung_nowplus_kernel

static void __videobuf_read_stop(struct videobuf_queue *q)
{
	int i;

	videobuf_queue_cancel(q);
	__videobuf_mmap_free(q);
	INIT_LIST_HEAD(&q->stream);
	for (i = 0; i < VIDEO_MAX_FRAME; i++) {
		if (NULL == q->bufs[i])
			continue;
		kfree(q->bufs[i]);
		q->bufs[i] = NULL;
	}
	q->read_buf = NULL;
}

Example #3

File: videobuf-core.c Project: PennPanda/linux-repo

/* Locking: Caller holds q->lock */
static int __videobuf_mmap_setup(struct videobuf_queue *q,
			unsigned int bcount, unsigned int bsize,
			enum v4l2_memory memory)
{
	unsigned int i;
	int err;

	MAGIC_CHECK(q->int_ops->magic,MAGIC_QTYPE_OPS);

	err = __videobuf_mmap_free(q);
	if (0 != err)
		return err;

	/* Allocate and initialize buffers */
	for (i = 0; i < bcount; i++) {
		q->bufs[i] = videobuf_alloc(q);

		if (q->bufs[i] == NULL)
			break;

		q->bufs[i]->i      = i;
		q->bufs[i]->input  = UNSET;
		q->bufs[i]->memory = memory;
		q->bufs[i]->bsize  = bsize;
		switch (memory) {
		case V4L2_MEMORY_MMAP:
			q->bufs[i]->boff  = bsize * i;
			break;
		case V4L2_MEMORY_USERPTR:
		case V4L2_MEMORY_OVERLAY:
			/* nothing */
			break;
		}
	}

	if (!i)
		return -ENOMEM;

	dprintk(1,"mmap setup: %d buffers, %d bytes each\n",
		i, bsize);

	return i;
}