/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2016 MediaTek Inc.
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* Author: PC Chen <pc.chen@mediatek.com>
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* Tiffany Lin <tiffany.lin@mediatek.com>
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*/
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#ifndef _VDEC_DRV_IF_H_
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#define _VDEC_DRV_IF_H_
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#include "mtk_vcodec_drv.h"
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#include "mtk_vcodec_dec.h"
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#include "mtk_vcodec_util.h"
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/**
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* struct vdec_fb_status - decoder frame buffer status
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* @FB_ST_NORMAL : initial state
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* @FB_ST_DISPLAY : frmae buffer is ready to be displayed
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* @FB_ST_FREE : frame buffer is not used by decoder any more
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*/
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enum vdec_fb_status {
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FB_ST_NORMAL = 0,
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FB_ST_DISPLAY = (1 << 0),
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FB_ST_FREE = (1 << 1)
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};
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/* For GET_PARAM_DISP_FRAME_BUFFER and GET_PARAM_FREE_FRAME_BUFFER,
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* the caller does not own the returned buffer. The buffer will not be
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* released before vdec_if_deinit.
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* GET_PARAM_DISP_FRAME_BUFFER : get next displayable frame buffer,
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* struct vdec_fb**
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* GET_PARAM_FREE_FRAME_BUFFER : get non-referenced framebuffer, vdec_fb**
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* GET_PARAM_PIC_INFO : get picture info, struct vdec_pic_info*
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* GET_PARAM_CROP_INFO : get crop info, struct v4l2_crop*
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* GET_PARAM_DPB_SIZE : get dpb size, unsigned int*
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*/
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enum vdec_get_param_type {
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GET_PARAM_DISP_FRAME_BUFFER,
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GET_PARAM_FREE_FRAME_BUFFER,
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GET_PARAM_PIC_INFO,
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GET_PARAM_CROP_INFO,
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GET_PARAM_DPB_SIZE
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};
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/**
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* struct vdec_fb_node - decoder frame buffer node
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* @list : list to hold this node
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* @fb : point to frame buffer (vdec_fb), fb could point to frame buffer and
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* working buffer this is for maintain buffers in different state
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*/
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struct vdec_fb_node {
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struct list_head list;
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struct vdec_fb *fb;
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};
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extern const struct vdec_common_if vdec_h264_if;
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extern const struct vdec_common_if vdec_vp8_if;
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extern const struct vdec_common_if vdec_vp9_if;
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/**
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* vdec_if_init() - initialize decode driver
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* @ctx : [in] v4l2 context
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* @fourcc : [in] video format fourcc, V4L2_PIX_FMT_H264/VP8/VP9..
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*/
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int vdec_if_init(struct mtk_vcodec_ctx *ctx, unsigned int fourcc);
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/**
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* vdec_if_deinit() - deinitialize decode driver
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* @ctx : [in] v4l2 context
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*
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*/
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void vdec_if_deinit(struct mtk_vcodec_ctx *ctx);
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/**
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* vdec_if_decode() - trigger decode
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* @ctx : [in] v4l2 context
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* @bs : [in] input bitstream
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* @fb : [in] frame buffer to store decoded frame, when null means parse
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* header only
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* @res_chg : [out] resolution change happens if current bs have different
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* picture width/height
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* Note: To flush the decoder when reaching EOF, set input bitstream as NULL.
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*
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* Return: 0 on success. -EIO on unrecoverable error.
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*/
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int vdec_if_decode(struct mtk_vcodec_ctx *ctx, struct mtk_vcodec_mem *bs,
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struct vdec_fb *fb, bool *res_chg);
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/**
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* vdec_if_get_param() - get driver's parameter
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* @ctx : [in] v4l2 context
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* @type : [in] input parameter type
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* @out : [out] buffer to store query result
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*/
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int vdec_if_get_param(struct mtk_vcodec_ctx *ctx, enum vdec_get_param_type type,
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void *out);
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#endif
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