101 lines
2.8 KiB
C
101 lines
2.8 KiB
C
/* Copyright (c) 2012, The Linux Foundation. All rights reserved.
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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 version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _WFD_VSG_SUBDEV_
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#define _WFD_VSG_SUBDEV_
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#include <linux/videodev2.h>
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#include <linux/list.h>
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#include <linux/ktime.h>
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#include <linux/workqueue.h>
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#include <media/v4l2-subdev.h>
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#include "mdp-subdev.h"
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#define VSG_MAGIC_IOCTL 'V'
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enum vsg_flags {
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VSG_NEVER_RELEASE = 1<<0,
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VSG_NEVER_SET_LAST_BUFFER = 1<<1,
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VSG_BUF_BEING_ENCODED = 1<<2,
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};
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enum vsg_modes {
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VSG_MODE_CFR,
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VSG_MODE_VFR,
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};
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enum vsg_states {
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VSG_STATE_NONE,
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VSG_STATE_STARTED,
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VSG_STATE_STOPPED,
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VSG_STATE_ERROR
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};
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struct vsg_buf_info {
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struct mdp_buf_info mdp_buf_info;
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struct timespec time;
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/* Internal */
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struct list_head node;
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uint32_t flags;
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};
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struct vsg_msg_ops {
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void *cbdata;
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int (*encode_frame)(void *cbdata, struct vsg_buf_info *buffer);
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int (*release_input_frame)(void *cbdata, struct vsg_buf_info *buffer);
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};
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struct vsg_context {
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struct vsg_buf_info free_queue, busy_queue;
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struct vsg_msg_ops vmops;
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/* All time related values below in nanosecs */
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int64_t frame_interval, max_frame_interval;
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struct workqueue_struct *work_queue;
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struct hrtimer threshold_timer;
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struct mutex mutex;
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struct vsg_buf_info *last_buffer;
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int mode;
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int state;
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};
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struct vsg_work {
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struct vsg_context *context;
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struct work_struct work;
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};
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struct vsg_encode_work {
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struct vsg_buf_info *buf;
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struct vsg_context *context;
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struct work_struct work;
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};
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#define VSG_OPEN _IO(VSG_MAGIC_IOCTL, 1)
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#define VSG_CLOSE _IO(VSG_MAGIC_IOCTL, 2)
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#define VSG_START _IO(VSG_MAGIC_IOCTL, 3)
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#define VSG_STOP _IO(VSG_MAGIC_IOCTL, 4)
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#define VSG_Q_BUFFER _IOW(VSG_MAGIC_IOCTL, 5, struct vsg_buf_info *)
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#define VSG_DQ_BUFFER _IOR(VSG_MAGIC_IOCTL, 6, struct vsg_out_buf *)
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#define VSG_RETURN_IP_BUFFER _IOW(VSG_MAGIC_IOCTL, 7, struct vsg_buf_info *)
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#define VSG_ENCODE_DONE _IO(VSG_MAGIC_IOCTL, 8)
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/* Time related arguments for frame interval ioctls are always in nanosecs*/
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#define VSG_SET_FRAME_INTERVAL _IOW(VSG_MAGIC_IOCTL, 9, int64_t *)
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#define VSG_GET_FRAME_INTERVAL _IOR(VSG_MAGIC_IOCTL, 10, int64_t *)
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#define VSG_SET_MAX_FRAME_INTERVAL _IOW(VSG_MAGIC_IOCTL, 11, int64_t *)
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#define VSG_GET_MAX_FRAME_INTERVAL _IOR(VSG_MAGIC_IOCTL, 12, int64_t *)
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#define VSG_SET_MODE _IOW(VSG_MAGIC_IOCTL, 13, enum vsg_modes *)
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extern int vsg_init(struct v4l2_subdev *sd, u32 val);
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extern long vsg_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg);
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#endif /* _WFD_VSG_SUBDEV_ */
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