C++ (Cpp) vb2_core_qbuf示例

示例#1

文件： videobuf2-v4l2.c 项目： SantoshShilimkar/linux

int vb2_qbuf(struct vb2_queue *q, struct v4l2_buffer *b)
{
	int ret;

	if (vb2_fileio_is_active(q)) {
		dprintk(1, "file io in progress\n");
		return -EBUSY;
	}

	ret = vb2_queue_or_prepare_buf(q, b, "qbuf");
	return ret ? ret : vb2_core_qbuf(q, b->index, b);
}

示例#2

文件： dvb_vb2.c 项目： AlexShiLucky/linux

int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
{
	int ret;

	ret = vb2_core_qbuf(&ctx->vb_q, b->index, b, NULL);
	if (ret) {
		dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
			b->index, ret);
		return ret;
	}
	dprintk(5, "[%s] index=%d\n", ctx->name, b->index);

	return 0;
}

示例#3

文件： videobuf2-v4l2.c 项目： 513855417/linux

static int vb2_internal_qbuf(struct vb2_queue *q, struct v4l2_buffer *b)
{
	int ret = vb2_queue_or_prepare_buf(q, b, "qbuf");

	return ret ? ret : vb2_core_qbuf(q, b->index, b);
}