linux-headers (unknown)
1 /* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */
2 /*
3 * video.h - DEPRECATED MPEG-TS video decoder API
4 *
5 * NOTE: should not be used on future drivers
6 *
7 * Copyright (C) 2000 Marcus Metzler <marcus@convergence.de>
8 * & Ralph Metzler <ralph@convergence.de>
9 * for convergence integrated media GmbH
10 */
11
12 #ifndef _DVBVIDEO_H_
13 #define _DVBVIDEO_H_
14
15 #include <linux/types.h>
16 #include <time.h>
17
18 typedef enum {
19 VIDEO_FORMAT_4_3, /* Select 4:3 format */
20 VIDEO_FORMAT_16_9, /* Select 16:9 format. */
21 VIDEO_FORMAT_221_1 /* 2.21:1 */
22 } video_format_t;
23
24
25 typedef enum {
26 VIDEO_PAN_SCAN, /* use pan and scan format */
27 VIDEO_LETTER_BOX, /* use letterbox format */
28 VIDEO_CENTER_CUT_OUT /* use center cut out format */
29 } video_displayformat_t;
30
31 typedef struct {
32 int w;
33 int h;
34 video_format_t aspect_ratio;
35 } video_size_t;
36
37 typedef enum {
38 VIDEO_SOURCE_DEMUX, /* Select the demux as the main source */
39 VIDEO_SOURCE_MEMORY /* If this source is selected, the stream
40 comes from the user through the write
41 system call */
42 } video_stream_source_t;
43
44
45 typedef enum {
46 VIDEO_STOPPED, /* Video is stopped */
47 VIDEO_PLAYING, /* Video is currently playing */
48 VIDEO_FREEZED /* Video is freezed */
49 } video_play_state_t;
50
51
52 /* Decoder commands */
53 #define VIDEO_CMD_PLAY (0)
54 #define VIDEO_CMD_STOP (1)
55 #define VIDEO_CMD_FREEZE (2)
56 #define VIDEO_CMD_CONTINUE (3)
57
58 /* Flags for VIDEO_CMD_FREEZE */
59 #define VIDEO_CMD_FREEZE_TO_BLACK (1 << 0)
60
61 /* Flags for VIDEO_CMD_STOP */
62 #define VIDEO_CMD_STOP_TO_BLACK (1 << 0)
63 #define VIDEO_CMD_STOP_IMMEDIATELY (1 << 1)
64
65 /* Play input formats: */
66 /* The decoder has no special format requirements */
67 #define VIDEO_PLAY_FMT_NONE (0)
68 /* The decoder requires full GOPs */
69 #define VIDEO_PLAY_FMT_GOP (1)
70
71 /* The structure must be zeroed before use by the application
72 This ensures it can be extended safely in the future. */
73 struct video_command {
74 __u32 cmd;
75 __u32 flags;
76 union {
77 struct {
78 __u64 pts;
79 } stop;
80
81 struct {
82 /* 0 or 1000 specifies normal speed,
83 1 specifies forward single stepping,
84 -1 specifies backward single stepping,
85 >1: playback at speed/1000 of the normal speed,
86 <-1: reverse playback at (-speed/1000) of the normal speed. */
87 __s32 speed;
88 __u32 format;
89 } play;
90
91 struct {
92 __u32 data[16];
93 } raw;
94 };
95 };
96
97 /* FIELD_UNKNOWN can be used if the hardware does not know whether
98 the Vsync is for an odd, even or progressive (i.e. non-interlaced)
99 field. */
100 #define VIDEO_VSYNC_FIELD_UNKNOWN (0)
101 #define VIDEO_VSYNC_FIELD_ODD (1)
102 #define VIDEO_VSYNC_FIELD_EVEN (2)
103 #define VIDEO_VSYNC_FIELD_PROGRESSIVE (3)
104
105 struct video_event {
106 __s32 type;
107 #define VIDEO_EVENT_SIZE_CHANGED 1
108 #define VIDEO_EVENT_FRAME_RATE_CHANGED 2
109 #define VIDEO_EVENT_DECODER_STOPPED 3
110 #define VIDEO_EVENT_VSYNC 4
111 /* unused, make sure to use atomic time for y2038 if it ever gets used */
112 long timestamp;
113 union {
114 video_size_t size;
115 unsigned int frame_rate; /* in frames per 1000sec */
116 unsigned char vsync_field; /* unknown/odd/even/progressive */
117 } u;
118 };
119
120
121 struct video_status {
122 int video_blank; /* blank video on freeze? */
123 video_play_state_t play_state; /* current state of playback */
124 video_stream_source_t stream_source; /* current source (demux/memory) */
125 video_format_t video_format; /* current aspect ratio of stream*/
126 video_displayformat_t display_format;/* selected cropping mode */
127 };
128
129
130 struct video_still_picture {
131 char *iFrame; /* pointer to a single iframe in memory */
132 __s32 size;
133 };
134
135
136 typedef __u16 video_attributes_t;
137 /* bits: descr. */
138 /* 15-14 Video compression mode (0=MPEG-1, 1=MPEG-2) */
139 /* 13-12 TV system (0=525/60, 1=625/50) */
140 /* 11-10 Aspect ratio (0=4:3, 3=16:9) */
141 /* 9- 8 permitted display mode on 4:3 monitor (0=both, 1=only pan-sca */
142 /* 7 line 21-1 data present in GOP (1=yes, 0=no) */
143 /* 6 line 21-2 data present in GOP (1=yes, 0=no) */
144 /* 5- 3 source resolution (0=720x480/576, 1=704x480/576, 2=352x480/57 */
145 /* 2 source letterboxed (1=yes, 0=no) */
146 /* 0 film/camera mode (0=
147 *camera, 1=film (625/50 only)) */
148
149
150 /* bit definitions for capabilities: */
151 /* can the hardware decode MPEG1 and/or MPEG2? */
152 #define VIDEO_CAP_MPEG1 1
153 #define VIDEO_CAP_MPEG2 2
154 /* can you send a system and/or program stream to video device?
155 (you still have to open the video and the audio device but only
156 send the stream to the video device) */
157 #define VIDEO_CAP_SYS 4
158 #define VIDEO_CAP_PROG 8
159 /* can the driver also handle SPU, NAVI and CSS encoded data?
160 (CSS API is not present yet) */
161 #define VIDEO_CAP_SPU 16
162 #define VIDEO_CAP_NAVI 32
163 #define VIDEO_CAP_CSS 64
164
165
166 #define VIDEO_STOP _IO('o', 21)
167 #define VIDEO_PLAY _IO('o', 22)
168 #define VIDEO_FREEZE _IO('o', 23)
169 #define VIDEO_CONTINUE _IO('o', 24)
170 #define VIDEO_SELECT_SOURCE _IO('o', 25)
171 #define VIDEO_SET_BLANK _IO('o', 26)
172 #define VIDEO_GET_STATUS _IOR('o', 27, struct video_status)
173 #define VIDEO_GET_EVENT _IOR('o', 28, struct video_event)
174 #define VIDEO_SET_DISPLAY_FORMAT _IO('o', 29)
175 #define VIDEO_STILLPICTURE _IOW('o', 30, struct video_still_picture)
176 #define VIDEO_FAST_FORWARD _IO('o', 31)
177 #define VIDEO_SLOWMOTION _IO('o', 32)
178 #define VIDEO_GET_CAPABILITIES _IOR('o', 33, unsigned int)
179 #define VIDEO_CLEAR_BUFFER _IO('o', 34)
180 #define VIDEO_SET_STREAMTYPE _IO('o', 36)
181 #define VIDEO_SET_FORMAT _IO('o', 37)
182 #define VIDEO_GET_SIZE _IOR('o', 55, video_size_t)
183
184 /**
185 * VIDEO_GET_PTS
186 *
187 * Read the 33 bit presentation time stamp as defined
188 * in ITU T-REC-H.222.0 / ISO/IEC 13818-1.
189 *
190 * The PTS should belong to the currently played
191 * frame if possible, but may also be a value close to it
192 * like the PTS of the last decoded frame or the last PTS
193 * extracted by the PES parser.
194 */
195 #define VIDEO_GET_PTS _IOR('o', 57, __u64)
196
197 /* Read the number of displayed frames since the decoder was started */
198 #define VIDEO_GET_FRAME_COUNT _IOR('o', 58, __u64)
199
200 #define VIDEO_COMMAND _IOWR('o', 59, struct video_command)
201 #define VIDEO_TRY_COMMAND _IOWR('o', 60, struct video_command)
202
203 #endif /* _DVBVIDEO_H_ */
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