mirror of
https://github.com/hardkernel/kernel_common_drivers.git
synced 2026-06-25 12:03:48 +09:00
wanwei.jiang
15656eb157
PD#SWPL-77521 Problem: porting media driver from kernel 5.4 Solution: porting media driver from kernel 5.4 Verify: s4d and C2 AF400 Change-Id: I63bb8316e271db8b7d0e6e524399ebde9a1456a6 Signed-off-by: wanwei.jiang <wanwei.jiang@amlogic.com>
110 lines
1.9 KiB
C
110 lines
1.9 KiB
C
/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
|
|
/*
|
|
* drivers/amlogic/media/video_processor/utils/vfp.h
|
|
*
|
|
* Copyright (C) 2017 Amlogic, Inc. All rights reserved.
|
|
*
|
|
* 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 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
*/
|
|
|
|
#ifndef __VFP_H_
|
|
#define __VFP_H_
|
|
|
|
struct vfq_s {
|
|
int rp;
|
|
int wp;
|
|
int size;
|
|
int pre_rp;
|
|
int pre_wp;
|
|
struct vframe_s **pool;
|
|
};
|
|
|
|
static inline void vfq_lookup_start(struct vfq_s *q)
|
|
{
|
|
q->pre_rp = q->rp;
|
|
q->pre_wp = q->wp;
|
|
}
|
|
|
|
static inline void vfq_lookup_end(struct vfq_s *q)
|
|
{
|
|
q->rp = q->pre_rp;
|
|
q->wp = q->pre_wp;
|
|
}
|
|
|
|
static inline void vfq_init(struct vfq_s *q, u32 size, struct vframe_s **pool)
|
|
{
|
|
q->rp = 0;
|
|
q->wp = 0;
|
|
q->size = size;
|
|
q->pool = pool;
|
|
}
|
|
|
|
static inline bool vfq_empty(struct vfq_s *q)
|
|
{
|
|
return q->rp == q->wp;
|
|
}
|
|
|
|
static inline void vfq_push(struct vfq_s *q, struct vframe_s *vf)
|
|
{
|
|
int wp = q->wp;
|
|
|
|
/*ToDo*/
|
|
smp_mb();
|
|
|
|
q->pool[wp] = vf;
|
|
|
|
/*ToDo*/
|
|
smp_wmb();
|
|
|
|
q->wp = (wp == (q->size - 1)) ? 0 : (wp + 1);
|
|
}
|
|
|
|
static inline struct vframe_s *vfq_pop(struct vfq_s *q)
|
|
{
|
|
struct vframe_s *vf;
|
|
int rp;
|
|
|
|
if (vfq_empty(q))
|
|
return NULL;
|
|
|
|
rp = q->rp;
|
|
|
|
/*ToDo*/
|
|
smp_rmb();
|
|
|
|
vf = q->pool[rp];
|
|
|
|
/*ToDo*/
|
|
smp_mb();
|
|
|
|
q->rp = (rp == (q->size - 1)) ? 0 : (rp + 1);
|
|
|
|
return vf;
|
|
}
|
|
|
|
static inline struct vframe_s *vfq_peek(struct vfq_s *q)
|
|
{
|
|
return (vfq_empty(q)) ? NULL : q->pool[q->rp];
|
|
}
|
|
|
|
static inline int vfq_level(struct vfq_s *q)
|
|
{
|
|
int level = q->wp - q->rp;
|
|
|
|
if (level < 0)
|
|
level += q->size;
|
|
|
|
return level;
|
|
}
|
|
|
|
#endif /* __VFP_H_ */
|