/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (c) 2016 MediaTek Inc. * Author: PC Chen <[email protected]> * Tiffany Lin <[email protected]> */ #ifndef _VDEC_DRV_IF_H_ #define _VDEC_DRV_IF_H_ #include "mtk_vcodec_dec.h" /** * enum vdec_fb_status - decoder frame buffer status * @FB_ST_NORMAL: initial state * @FB_ST_DISPLAY: frame buffer is ready to be displayed * @FB_ST_FREE: frame buffer is not used by decoder any more */ enum vdec_fb_status { … }; /* 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 { … }; /** * 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 { … }; extern const struct vdec_common_if vdec_h264_if; extern const struct vdec_common_if vdec_h264_slice_if; extern const struct vdec_common_if vdec_h264_slice_multi_if; extern const struct vdec_common_if vdec_vp8_if; extern const struct vdec_common_if vdec_vp8_slice_if; extern const struct vdec_common_if vdec_vp9_if; extern const struct vdec_common_if vdec_vp9_slice_lat_if; extern const struct vdec_common_if vdec_hevc_slice_multi_if; extern const struct vdec_common_if vdec_av1_slice_lat_if; /** * 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_dec_ctx *ctx, unsigned int fourcc); /** * vdec_if_deinit() - deinitialize decode driver * @ctx : [in] v4l2 context * */ void vdec_if_deinit(struct mtk_vcodec_dec_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_dec_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_dec_ctx *ctx, enum vdec_get_param_type type, void *out); #endif
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