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 */ 22 enum 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 */ 38 enum 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 */ 52 struct vdec_fb_node { 53 struct list_head list; 54 struct vdec_fb *fb; 55 }; 56 57 extern const struct vdec_common_if vdec_h264_if; 58 extern const struct vdec_common_if vdec_h264_slice_if; 59 extern const struct vdec_common_if vdec_h264_slice_multi_if; 60 extern const struct vdec_common_if vdec_vp8_if; 61 extern const struct vdec_common_if vdec_vp8_slice_if; 62 extern const struct vdec_common_if vdec_vp9_if; 63 extern const struct vdec_common_if vdec_vp9_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_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 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_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