1 /* 2 * Copyright (c) 2016 MediaTek Inc. 3 * Author: PC Chen <pc.chen@mediatek.com> 4 * Tiffany Lin <tiffany.lin@mediatek.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 */ 15 16 #ifndef _VDEC_DRV_IF_H_ 17 #define _VDEC_DRV_IF_H_ 18 19 #include "mtk_vcodec_drv.h" 20 #include "mtk_vcodec_dec.h" 21 #include "mtk_vcodec_util.h" 22 23 24 /** 25 * struct vdec_fb_status - decoder frame buffer status 26 * @FB_ST_NORMAL : initial state 27 * @FB_ST_DISPLAY : frmae buffer is ready to be displayed 28 * @FB_ST_FREE : frame buffer is not used by decoder any more 29 */ 30 enum vdec_fb_status { 31 FB_ST_NORMAL = 0, 32 FB_ST_DISPLAY = (1 << 0), 33 FB_ST_FREE = (1 << 1) 34 }; 35 36 /* For GET_PARAM_DISP_FRAME_BUFFER and GET_PARAM_FREE_FRAME_BUFFER, 37 * the caller does not own the returned buffer. The buffer will not be 38 * released before vdec_if_deinit. 39 * GET_PARAM_DISP_FRAME_BUFFER : get next displayable frame buffer, 40 * struct vdec_fb** 41 * GET_PARAM_FREE_FRAME_BUFFER : get non-referenced framebuffer, vdec_fb** 42 * GET_PARAM_PIC_INFO : get picture info, struct vdec_pic_info* 43 * GET_PARAM_CROP_INFO : get crop info, struct v4l2_crop* 44 * GET_PARAM_DPB_SIZE : get dpb size, unsigned int* 45 */ 46 enum vdec_get_param_type { 47 GET_PARAM_DISP_FRAME_BUFFER, 48 GET_PARAM_FREE_FRAME_BUFFER, 49 GET_PARAM_PIC_INFO, 50 GET_PARAM_CROP_INFO, 51 GET_PARAM_DPB_SIZE 52 }; 53 54 /** 55 * struct vdec_fb_node - decoder frame buffer node 56 * @list : list to hold this node 57 * @fb : point to frame buffer (vdec_fb), fb could point to frame buffer and 58 * working buffer this is for maintain buffers in different state 59 */ 60 struct vdec_fb_node { 61 struct list_head list; 62 struct vdec_fb *fb; 63 }; 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_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_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 menas 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_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_ctx *ctx, enum vdec_get_param_type type, 101 void *out); 102 103 #endif 104