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/*
* Copyright 2005-2009 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU Lesser General
* Public License. You may obtain a copy of the GNU Lesser General
* Public License Version 2.1 or later at the following locations:
*
* http://www.opensource.org/licenses/lgpl-license.html
* http://www.gnu.org/copyleft/lgpl.html
*/
/*!
* @defgroup MXC_PF MPEG4/H.264 Post Filter Driver
*/
/*!
* @file arch-mxc/mxc_pf.h
*
* @brief MXC IPU MPEG4/H.264 Post-filtering driver
*
* User-level API for IPU Hardware MPEG4/H.264 Post-filtering.
*
* @ingroup MXC_PF
*/
#ifndef __INCLUDED_MXC_PF_H__
#define __INCLUDED_MXC_PF_H__
#define PF_MAX_BUFFER_CNT 17
#define PF_WAIT_Y 0x0001
#define PF_WAIT_U 0x0002
#define PF_WAIT_V 0x0004
#define PF_WAIT_ALL (PF_WAIT_Y|PF_WAIT_U|PF_WAIT_V)
/*!
* Structure for Post Filter initialization parameters.
*/
typedef struct {
uint16_t pf_mode; /*!< Post filter operation mode */
uint16_t width; /*!< Width of frame in pixels */
uint16_t height; /*!< Height of frame in pixels */
uint16_t stride; /*!< Stride of Y plane in pixels. Stride for U and V planes is half Y stride */
uint32_t qp_size;
unsigned long qp_paddr;
} pf_init_params;
/*!
* Structure for Post Filter buffer request parameters.
*/
typedef struct {
int count; /*!< Number of buffers requested */
__u32 req_size;
} pf_reqbufs_params;
/*!
* Structure for Post Filter buffer request parameters.
*/
typedef struct {
int index;
int size; /*!< Size of buffer allocated */
__u32 offset; /*!< Buffer offset in driver memory. Set by QUERYBUF */
__u32 y_offset; /*!< Optional starting relative offset of Y data
from beginning of buffer. Set to 0 to use default
calculated based on height and stride */
__u32 u_offset; /*!< Optional starting relative offset of U data
from beginning of buffer. Set to 0 to use default
calculated based on height and stride */
__u32 v_offset; /*!< Optional starting relative offset of V data
from beginning of buffer. Set to 0 to use default
calculated based on height and stride */
} pf_buf;
/*!
* Structure for Post Filter start parameters.
*/
typedef struct {
pf_buf in; /*!< Input buffer address and offsets */
pf_buf out; /*!< Output buffer address and offsets */
int qp_buf;
int wait;
uint32_t h264_pause_row; /*!< Row to pause at for H.264 mode. 0 to disable pause */
} pf_start_params;
/*! @name User Client Ioctl Interface */
/*! @{ */
/*!
* IOCTL to Initialize the Post Filter.
*/
#define PF_IOCTL_INIT _IOW('F',0x0, pf_init_params)
/*!
* IOCTL to Uninitialize the Post Filter.
*/
#define PF_IOCTL_UNINIT _IO('F',0x1)
/*!
* IOCTL to set the buffer mode and allocate buffers if driver allocated.
*/
#define PF_IOCTL_REQBUFS _IOWR('F',0x2, pf_reqbufs_params)
/*!
* IOCTL to set the buffer mode and allocate buffers if driver allocated.
*/
#define PF_IOCTL_QUERYBUF _IOR('F',0x2, pf_buf)
/*!
* IOCTL to start post filtering on a frame of data. This ioctl may block until
* processing is done or return immediately.
*/
#define PF_IOCTL_START _IOWR('F',0x3, pf_start_params)
/*!
* IOCTL to resume post-filtering after an intra frame pause in H.264 mode.
*/
#define PF_IOCTL_RESUME _IOW('F',0x4, int)
/*!
* IOCTL to wait for post-filtering to complete.
*/
#define PF_IOCTL_WAIT _IOW('F',0x5, int)
/*! @} */
#endif /* __INCLUDED_MXC_PF_H__ */
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