blob: a5ab7358f668166d124c298493f21818415ee063
| 1 | /* |
| 2 | * Copyright (C) 2017 Amlogic, Inc. All rights reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along |
| 15 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 16 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 17 | * |
| 18 | * Description: |
| 19 | */ |
| 20 | #ifndef _VDEC_DRV_IF_H_ |
| 21 | #define _VDEC_DRV_IF_H_ |
| 22 | |
| 23 | #include "aml_vcodec_drv.h" |
| 24 | #include "aml_vcodec_dec.h" |
| 25 | #include "aml_vcodec_util.h" |
| 26 | #include "../stream_input/parser/streambuf.h" |
| 27 | |
| 28 | #define AML_VIDEO_MAGIC CODEC_MODE('A', 'M', 'L', 'V') |
| 29 | |
| 30 | #define V4L_STREAM_TYPE_MATEDATA (0) |
| 31 | #define V4L_STREAM_TYPE_FRAME (1) |
| 32 | |
| 33 | struct stream_info { |
| 34 | u32 stream_width; |
| 35 | u32 stream_height; |
| 36 | u32 stream_field; |
| 37 | u32 stream_dpb; |
| 38 | }; |
| 39 | |
| 40 | struct aml_video_stream { |
| 41 | u32 magic; |
| 42 | u32 type; |
| 43 | union { |
| 44 | struct stream_info s; |
| 45 | u8 buf[64]; |
| 46 | } m; |
| 47 | u32 len; |
| 48 | u8 data[0]; |
| 49 | }; |
| 50 | |
| 51 | /** |
| 52 | * struct vdec_fb_status - decoder frame buffer status |
| 53 | * @FB_ST_NORMAL : initial state |
| 54 | * @FB_ST_DISPLAY : frmae buffer is ready to be displayed |
| 55 | * @FB_ST_FREE : frame buffer is not used by decoder any more |
| 56 | */ |
| 57 | enum vdec_fb_status { |
| 58 | FB_ST_NORMAL, |
| 59 | FB_ST_DISPLAY, |
| 60 | FB_ST_FREE |
| 61 | }; |
| 62 | |
| 63 | /* For GET_PARAM_DISP_FRAME_BUFFER and GET_PARAM_FREE_FRAME_BUFFER, |
| 64 | * the caller does not own the returned buffer. The buffer will not be |
| 65 | * released before vdec_if_deinit. |
| 66 | * GET_PARAM_DISP_FRAME_BUFFER : get next displayable frame buffer, |
| 67 | * struct vdec_fb** |
| 68 | * GET_PARAM_FREE_FRAME_BUFFER : get non-referenced framebuffer, vdec_fb** |
| 69 | * GET_PARAM_PIC_INFO : get picture info, struct vdec_pic_info* |
| 70 | * GET_PARAM_CROP_INFO : get crop info, struct v4l2_crop* |
| 71 | * GET_PARAM_DPB_SIZE : get dpb size, unsigned int* |
| 72 | */ |
| 73 | enum vdec_get_param_type { |
| 74 | GET_PARAM_DISP_FRAME_BUFFER, |
| 75 | GET_PARAM_FREE_FRAME_BUFFER, |
| 76 | GET_PARAM_PIC_INFO, |
| 77 | GET_PARAM_CROP_INFO, |
| 78 | GET_PARAM_DPB_SIZE, |
| 79 | GET_PARAM_CONFIG_INFO |
| 80 | }; |
| 81 | |
| 82 | /* |
| 83 | * SET_PARAM_PS_INFO : set picture parms, data parsed from ucode. |
| 84 | */ |
| 85 | enum vdec_set_param_type { |
| 86 | SET_PARAM_WRITE_FRAME_SYNC, |
| 87 | SET_PARAM_PS_INFO, |
| 88 | SET_PARAM_HDR_INFO, |
| 89 | SET_PARAM_POST_EVENT |
| 90 | }; |
| 91 | |
| 92 | /** |
| 93 | * struct vdec_fb_node - decoder frame buffer node |
| 94 | * @list : list to hold this node |
| 95 | * @fb : point to frame buffer (vdec_fb), fb could point to frame buffer and |
| 96 | * working buffer this is for maintain buffers in different state |
| 97 | */ |
| 98 | struct vdec_fb_node { |
| 99 | struct list_head list; |
| 100 | struct vdec_fb *fb; |
| 101 | }; |
| 102 | |
| 103 | /** |
| 104 | * vdec_if_init() - initialize decode driver |
| 105 | * @ctx : [in] v4l2 context |
| 106 | * @fourcc : [in] video format fourcc, V4L2_PIX_FMT_H264/VP8/VP9.. |
| 107 | */ |
| 108 | int vdec_if_init(struct aml_vcodec_ctx *ctx, unsigned int fourcc); |
| 109 | |
| 110 | int vdec_if_probe(struct aml_vcodec_ctx *ctx, |
| 111 | struct aml_vcodec_mem *bs, void *out); |
| 112 | |
| 113 | /** |
| 114 | * vdec_if_deinit() - deinitialize decode driver |
| 115 | * @ctx : [in] v4l2 context |
| 116 | * |
| 117 | */ |
| 118 | void vdec_if_deinit(struct aml_vcodec_ctx *ctx); |
| 119 | |
| 120 | /** |
| 121 | * vdec_if_decode() - trigger decode |
| 122 | * @ctx : [in] v4l2 context |
| 123 | * @bs : [in] input bitstream |
| 124 | * @fb : [in] frame buffer to store decoded frame, when null menas parse |
| 125 | * header only |
| 126 | * @res_chg : [out] resolution change happens if current bs have different |
| 127 | * picture width/height |
| 128 | * Note: To flush the decoder when reaching EOF, set input bitstream as NULL. |
| 129 | * |
| 130 | * Return: 0 on success. -EIO on unrecoverable error. |
| 131 | */ |
| 132 | int vdec_if_decode(struct aml_vcodec_ctx *ctx, struct aml_vcodec_mem *bs, |
| 133 | u64 timestamp, bool *res_chg); |
| 134 | |
| 135 | /** |
| 136 | * vdec_if_get_param() - get driver's parameter |
| 137 | * @ctx : [in] v4l2 context |
| 138 | * @type : [in] input parameter type |
| 139 | * @out : [out] buffer to store query result |
| 140 | */ |
| 141 | int vdec_if_get_param(struct aml_vcodec_ctx *ctx, enum vdec_get_param_type type, |
| 142 | void *out); |
| 143 | |
| 144 | #endif |
| 145 |