1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * Copyright (c) 2016 MediaTek Inc. 4 * Author: PC Chen <pc.chen@mediatek.com> 5 * Tiffany Lin <tiffany.lin@mediatek.com> 6 */ 7 8#ifndef _VDEC_DRV_IF_H_ 9#define _VDEC_DRV_IF_H_ 10 11#include "mtk_vcodec_drv.h" 12#include "mtk_vcodec_dec.h" 13#include "mtk_vcodec_util.h" 14 15 16/** 17 * enum vdec_fb_status - decoder frame buffer status 18 * @FB_ST_NORMAL: initial state 19 * @FB_ST_DISPLAY: frame buffer is ready to be displayed 20 * @FB_ST_FREE: frame buffer is not used by decoder any more 21 */ 22enum vdec_fb_status { 23 FB_ST_NORMAL = 0, 24 FB_ST_DISPLAY = (1 << 0), 25 FB_ST_FREE = (1 << 1) 26}; 27 28/* For GET_PARAM_DISP_FRAME_BUFFER and GET_PARAM_FREE_FRAME_BUFFER, 29 * the caller does not own the returned buffer. The buffer will not be 30 * released before vdec_if_deinit. 31 * GET_PARAM_DISP_FRAME_BUFFER : get next displayable frame buffer, 32 * struct vdec_fb** 33 * GET_PARAM_FREE_FRAME_BUFFER : get non-referenced framebuffer, vdec_fb** 34 * GET_PARAM_PIC_INFO : get picture info, struct vdec_pic_info* 35 * GET_PARAM_CROP_INFO : get crop info, struct v4l2_crop* 36 * GET_PARAM_DPB_SIZE : get dpb size, unsigned int* 37 */ 38enum vdec_get_param_type { 39 GET_PARAM_DISP_FRAME_BUFFER, 40 GET_PARAM_FREE_FRAME_BUFFER, 41 GET_PARAM_PIC_INFO, 42 GET_PARAM_CROP_INFO, 43 GET_PARAM_DPB_SIZE 44}; 45 46/** 47 * struct vdec_fb_node - decoder frame buffer node 48 * @list : list to hold this node 49 * @fb : point to frame buffer (vdec_fb), fb could point to frame buffer and 50 * working buffer this is for maintain buffers in different state 51 */ 52struct vdec_fb_node { 53 struct list_head list; 54 struct vdec_fb *fb; 55}; 56 57extern const struct vdec_common_if vdec_h264_if; 58extern const struct vdec_common_if vdec_h264_slice_if; 59extern const struct vdec_common_if vdec_vp8_if; 60extern const struct vdec_common_if vdec_vp9_if; 61 62/** 63 * vdec_if_init() - initialize decode driver 64 * @ctx : [in] v4l2 context 65 * @fourcc : [in] video format fourcc, V4L2_PIX_FMT_H264/VP8/VP9.. 66 */ 67int vdec_if_init(struct mtk_vcodec_ctx *ctx, unsigned int fourcc); 68 69/** 70 * vdec_if_deinit() - deinitialize decode driver 71 * @ctx : [in] v4l2 context 72 * 73 */ 74void vdec_if_deinit(struct mtk_vcodec_ctx *ctx); 75 76/** 77 * vdec_if_decode() - trigger decode 78 * @ctx : [in] v4l2 context 79 * @bs : [in] input bitstream 80 * @fb : [in] frame buffer to store decoded frame, when null means parse 81 * header only 82 * @res_chg : [out] resolution change happens if current bs have different 83 * picture width/height 84 * Note: To flush the decoder when reaching EOF, set input bitstream as NULL. 85 * 86 * Return: 0 on success. -EIO on unrecoverable error. 87 */ 88int vdec_if_decode(struct mtk_vcodec_ctx *ctx, struct mtk_vcodec_mem *bs, 89 struct vdec_fb *fb, bool *res_chg); 90 91/** 92 * vdec_if_get_param() - get driver's parameter 93 * @ctx : [in] v4l2 context 94 * @type : [in] input parameter type 95 * @out : [out] buffer to store query result 96 */ 97int vdec_if_get_param(struct mtk_vcodec_ctx *ctx, enum vdec_get_param_type type, 98 void *out); 99 100#endif 101