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/*
* Copyright (c) 2016 MediaTek Inc.
* Author: PC Chen <pc.chen@mediatek.com>
* Tiffany Lin <tiffany.lin@mediatek.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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 _VDEC_DRV_IF_H_
#define _VDEC_DRV_IF_H_
#include "mtk_vcodec_drv.h"
#include "mtk_vcodec_dec.h"
#include "mtk_vcodec_util.h"
/**
* struct vdec_fb_status - decoder frame buffer status
* @FB_ST_NORMAL : initial state
* @FB_ST_DISPLAY : frmae buffer is ready to be displayed
* @FB_ST_FREE : frame buffer is not used by decoder any more
*/
enum vdec_fb_status {
FB_ST_NORMAL = 0,
FB_ST_DISPLAY = (1 << 0),
FB_ST_FREE = (1 << 1)
};
/* For GET_PARAM_DISP_FRAME_BUFFER and GET_PARAM_FREE_FRAME_BUFFER,
* the caller does not own the returned buffer. The buffer will not be
* released before vdec_if_deinit.
* GET_PARAM_DISP_FRAME_BUFFER : get next displayable frame buffer,
* struct vdec_fb**
* GET_PARAM_FREE_FRAME_BUFFER : get non-referenced framebuffer, vdec_fb**
* GET_PARAM_PIC_INFO : get picture info, struct vdec_pic_info*
* GET_PARAM_CROP_INFO : get crop info, struct v4l2_crop*
* GET_PARAM_DPB_SIZE : get dpb size, unsigned int*
*/
enum vdec_get_param_type {
GET_PARAM_DISP_FRAME_BUFFER,
GET_PARAM_FREE_FRAME_BUFFER,
GET_PARAM_PIC_INFO,
GET_PARAM_CROP_INFO,
GET_PARAM_DPB_SIZE
};
/**
* struct vdec_fb_node - decoder frame buffer node
* @list : list to hold this node
* @fb : point to frame buffer (vdec_fb), fb could point to frame buffer and
* working buffer this is for maintain buffers in different state
*/
struct vdec_fb_node {
struct list_head list;
struct vdec_fb *fb;
};
/**
* vdec_if_init() - initialize decode driver
* @ctx : [in] v4l2 context
* @fourcc : [in] video format fourcc, V4L2_PIX_FMT_H264/VP8/VP9..
*/
int vdec_if_init(struct mtk_vcodec_ctx *ctx, unsigned int fourcc);
/**
* vdec_if_deinit() - deinitialize decode driver
* @ctx : [in] v4l2 context
*
*/
void vdec_if_deinit(struct mtk_vcodec_ctx *ctx);
/**
* vdec_if_decode() - trigger decode
* @ctx : [in] v4l2 context
* @bs : [in] input bitstream
* @fb : [in] frame buffer to store decoded frame, when null means parse
* header only
* @res_chg : [out] resolution change happens if current bs have different
* picture width/height
* Note: To flush the decoder when reaching EOF, set input bitstream as NULL.
*
* Return: 0 on success. -EIO on unrecoverable error.
*/
int vdec_if_decode(struct mtk_vcodec_ctx *ctx, struct mtk_vcodec_mem *bs,
struct vdec_fb *fb, bool *res_chg);
/**
* vdec_if_get_param() - get driver's parameter
* @ctx : [in] v4l2 context
* @type : [in] input parameter type
* @out : [out] buffer to store query result
*/
int vdec_if_get_param(struct mtk_vcodec_ctx *ctx, enum vdec_get_param_type type,
void *out);
#endif
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