/src/mpv/video/out/vo_null.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * based on video_out_null.c from mpeg2dec |
3 | | * |
4 | | * Copyright (C) Aaron Holtzman - June 2000 |
5 | | * |
6 | | * This file is part of mpv. |
7 | | * |
8 | | * mpv is free software; you can redistribute it and/or |
9 | | * modify it under the terms of the GNU Lesser General Public |
10 | | * License as published by the Free Software Foundation; either |
11 | | * version 2.1 of the License, or (at your option) any later version. |
12 | | * |
13 | | * mpv is distributed in the hope that it will be useful, |
14 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | | * GNU Lesser General Public License for more details. |
17 | | * |
18 | | * You should have received a copy of the GNU Lesser General Public |
19 | | * License along with mpv. If not, see <http://www.gnu.org/licenses/>. |
20 | | */ |
21 | | |
22 | | #include <stdlib.h> |
23 | | #include "common/msg.h" |
24 | | #include "vo.h" |
25 | | #include "video/mp_image.h" |
26 | | #include "osdep/timer.h" |
27 | | #include "options/m_option.h" |
28 | | |
29 | | struct priv { |
30 | | int64_t last_vsync; |
31 | | |
32 | | double cfg_fps; |
33 | | }; |
34 | | |
35 | | static bool draw_frame(struct vo *vo, struct vo_frame *frame) |
36 | 5.38M | { |
37 | 5.38M | return VO_TRUE; |
38 | 5.38M | } |
39 | | |
40 | | static void flip_page(struct vo *vo) |
41 | 5.38M | { |
42 | 5.38M | struct priv *p = vo->priv; |
43 | 5.38M | if (p->cfg_fps) { |
44 | 0 | int64_t ft = 1e9 / p->cfg_fps; |
45 | 0 | int64_t prev_vsync = mp_time_ns() / ft; |
46 | 0 | int64_t target_time = (prev_vsync + 1) * ft; |
47 | 0 | for (;;) { |
48 | 0 | int64_t now = mp_time_ns(); |
49 | 0 | if (now >= target_time) |
50 | 0 | break; |
51 | 0 | mp_sleep_ns(target_time - now); |
52 | 0 | } |
53 | 0 | } |
54 | 5.38M | } |
55 | | |
56 | | static int query_format(struct vo *vo, int format) |
57 | 87.4M | { |
58 | 87.4M | return 1; |
59 | 87.4M | } |
60 | | |
61 | | static int reconfig(struct vo *vo, struct mp_image_params *params) |
62 | 43.9k | { |
63 | 43.9k | return 0; |
64 | 43.9k | } |
65 | | |
66 | | static void uninit(struct vo *vo) |
67 | 61.3k | { |
68 | 61.3k | } |
69 | | |
70 | | static int preinit(struct vo *vo) |
71 | 61.3k | { |
72 | 61.3k | return 0; |
73 | 61.3k | } |
74 | | |
75 | | static int control(struct vo *vo, uint32_t request, void *data) |
76 | 7.03M | { |
77 | 7.03M | struct priv *p = vo->priv; |
78 | 7.03M | switch (request) { |
79 | 61.3k | case VOCTRL_GET_DISPLAY_FPS: |
80 | 61.3k | if (!p->cfg_fps) |
81 | 61.3k | break; |
82 | 0 | *(double *)data = p->cfg_fps; |
83 | 0 | return VO_TRUE; |
84 | 7.03M | } |
85 | 7.03M | return VO_NOTIMPL; |
86 | 7.03M | } |
87 | | |
88 | | #define OPT_BASE_STRUCT struct priv |
89 | | const struct vo_driver video_out_null = { |
90 | | .description = "Null video output", |
91 | | .name = "null", |
92 | | .preinit = preinit, |
93 | | .query_format = query_format, |
94 | | .reconfig = reconfig, |
95 | | .control = control, |
96 | | .draw_frame = draw_frame, |
97 | | .flip_page = flip_page, |
98 | | .uninit = uninit, |
99 | | .priv_size = sizeof(struct priv), |
100 | | .options = (const struct m_option[]) { |
101 | | {"fps", OPT_DOUBLE(cfg_fps), M_RANGE(0, 10000)}, |
102 | | {0}, |
103 | | }, |
104 | | .options_prefix = "vo-null", |
105 | | }; |