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 |