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Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 655 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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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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/**
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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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