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_dec.h" 12 13 14 /** 15 * enum vdec_fb_status - decoder frame buffer status 16 * @FB_ST_NORMAL: initial state 17 * @FB_ST_DISPLAY: frame buffer is ready to be displayed 18 * @FB_ST_FREE: frame buffer is not used by decoder any more 19 */ 20 enum vdec_fb_status { 21 FB_ST_NORMAL = 0, 22 FB_ST_DISPLAY = (1 << 0), 23 FB_ST_FREE = (1 << 1) 24 }; 25 26 /* For GET_PARAM_DISP_FRAME_BUFFER and GET_PARAM_FREE_FRAME_BUFFER, 27 * the caller does not own the returned buffer. The buffer will not be 28 * released before vdec_if_deinit. 29 * GET_PARAM_DISP_FRAME_BUFFER : get next displayable frame buffer, 30 * struct vdec_fb** 31 * GET_PARAM_FREE_FRAME_BUFFER : get non-referenced framebuffer, vdec_fb** 32 * GET_PARAM_PIC_INFO : get picture info, struct vdec_pic_info* 33 * GET_PARAM_CROP_INFO : get crop info, struct v4l2_crop* 34 * GET_PARAM_DPB_SIZE : get dpb size, unsigned int* 35 */ 36 enum vdec_get_param_type { 37 GET_PARAM_DISP_FRAME_BUFFER, 38 GET_PARAM_FREE_FRAME_BUFFER, 39 GET_PARAM_PIC_INFO, 40 GET_PARAM_CROP_INFO, 41 GET_PARAM_DPB_SIZE 42 }; 43 44 /** 45 * struct vdec_fb_node - decoder frame buffer node 46 * @list : list to hold this node 47 * @fb : point to frame buffer (vdec_fb), fb could point to frame buffer and 48 * working buffer this is for maintain buffers in different state 49 */ 50 struct vdec_fb_node { 51 struct list_head list; 52 struct vdec_fb *fb; 53 }; 54 55 extern const struct vdec_common_if vdec_h264_if; 56 extern const struct vdec_common_if vdec_h264_slice_if; 57 extern const struct vdec_common_if vdec_h264_slice_multi_if; 58 extern const struct vdec_common_if vdec_vp8_if; 59 extern const struct vdec_common_if vdec_vp8_slice_if; 60 extern const struct vdec_common_if vdec_vp9_if; 61 extern const struct vdec_common_if vdec_vp9_slice_lat_if; 62 extern const struct vdec_common_if vdec_hevc_slice_multi_if; 63 extern const struct vdec_common_if vdec_av1_slice_lat_if; 64 65 /** 66 * vdec_if_init() - initialize decode driver 67 * @ctx : [in] v4l2 context 68 * @fourcc : [in] video format fourcc, V4L2_PIX_FMT_H264/VP8/VP9.. 69 */ 70 int vdec_if_init(struct mtk_vcodec_dec_ctx *ctx, unsigned int fourcc); 71 72 /** 73 * vdec_if_deinit() - deinitialize decode driver 74 * @ctx : [in] v4l2 context 75 * 76 */ 77 void vdec_if_deinit(struct mtk_vcodec_dec_ctx *ctx); 78 79 /** 80 * vdec_if_decode() - trigger decode 81 * @ctx : [in] v4l2 context 82 * @bs : [in] input bitstream 83 * @fb : [in] frame buffer to store decoded frame, when null means parse 84 * header only 85 * @res_chg : [out] resolution change happens if current bs have different 86 * picture width/height 87 * Note: To flush the decoder when reaching EOF, set input bitstream as NULL. 88 * 89 * Return: 0 on success. -EIO on unrecoverable error. 90 */ 91 int vdec_if_decode(struct mtk_vcodec_dec_ctx *ctx, struct mtk_vcodec_mem *bs, 92 struct vdec_fb *fb, bool *res_chg); 93 94 /** 95 * vdec_if_get_param() - get driver's parameter 96 * @ctx : [in] v4l2 context 97 * @type : [in] input parameter type 98 * @out : [out] buffer to store query result 99 */ 100 int vdec_if_get_param(struct mtk_vcodec_dec_ctx *ctx, enum vdec_get_param_type type, 101 void *out); 102 103 #endif 104