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1 /*
2  * video.h
3  *
4  * Copyright (C) 2000 Marcus Metzler <marcus@convergence.de>
5  *                  & Ralph  Metzler <ralph@convergence.de>
6  *                    for convergence integrated media GmbH
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public License
10  * as published by the Free Software Foundation; either version 2.1
11  * of the License, or (at your option) any later version.
12  *
13  * This program 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 General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
21  *
22  */
23 
24 #ifndef _UAPI_DVBVIDEO_H_
25 #define _UAPI_DVBVIDEO_H_
26 
27 #include <linux/types.h>
28 #ifndef __KERNEL__
29 #include <time.h>
30 #endif
31 
32 typedef enum {
33 	VIDEO_FORMAT_4_3,     /* Select 4:3 format */
34 	VIDEO_FORMAT_16_9,    /* Select 16:9 format. */
35 	VIDEO_FORMAT_221_1    /* 2.21:1 */
36 } video_format_t;
37 
38 
39 typedef enum {
40 	 VIDEO_SYSTEM_PAL,
41 	 VIDEO_SYSTEM_NTSC,
42 	 VIDEO_SYSTEM_PALN,
43 	 VIDEO_SYSTEM_PALNc,
44 	 VIDEO_SYSTEM_PALM,
45 	 VIDEO_SYSTEM_NTSC60,
46 	 VIDEO_SYSTEM_PAL60,
47 	 VIDEO_SYSTEM_PALM60
48 } video_system_t;
49 
50 
51 typedef enum {
52 	VIDEO_PAN_SCAN,       /* use pan and scan format */
53 	VIDEO_LETTER_BOX,     /* use letterbox format */
54 	VIDEO_CENTER_CUT_OUT  /* use center cut out format */
55 } video_displayformat_t;
56 
57 typedef struct {
58 	int w;
59 	int h;
60 	video_format_t aspect_ratio;
61 } video_size_t;
62 
63 typedef enum {
64 	VIDEO_SOURCE_DEMUX, /* Select the demux as the main source */
65 	VIDEO_SOURCE_MEMORY /* If this source is selected, the stream
66 			       comes from the user through the write
67 			       system call */
68 } video_stream_source_t;
69 
70 
71 typedef enum {
72 	VIDEO_STOPPED, /* Video is stopped */
73 	VIDEO_PLAYING, /* Video is currently playing */
74 	VIDEO_FREEZED  /* Video is freezed */
75 } video_play_state_t;
76 
77 
78 /* Decoder commands */
79 #define VIDEO_CMD_PLAY        (0)
80 #define VIDEO_CMD_STOP        (1)
81 #define VIDEO_CMD_FREEZE      (2)
82 #define VIDEO_CMD_CONTINUE    (3)
83 
84 /* Flags for VIDEO_CMD_FREEZE */
85 #define VIDEO_CMD_FREEZE_TO_BLACK     	(1 << 0)
86 
87 /* Flags for VIDEO_CMD_STOP */
88 #define VIDEO_CMD_STOP_TO_BLACK      	(1 << 0)
89 #define VIDEO_CMD_STOP_IMMEDIATELY     	(1 << 1)
90 
91 /* Play input formats: */
92 /* The decoder has no special format requirements */
93 #define VIDEO_PLAY_FMT_NONE         (0)
94 /* The decoder requires full GOPs */
95 #define VIDEO_PLAY_FMT_GOP          (1)
96 
97 /* The structure must be zeroed before use by the application
98    This ensures it can be extended safely in the future. */
99 struct video_command {
100 	__u32 cmd;
101 	__u32 flags;
102 	union {
103 		struct {
104 			__u64 pts;
105 		} stop;
106 
107 		struct {
108 			/* 0 or 1000 specifies normal speed,
109 			   1 specifies forward single stepping,
110 			   -1 specifies backward single stepping,
111 			   >1: playback at speed/1000 of the normal speed,
112 			   <-1: reverse playback at (-speed/1000) of the normal speed. */
113 			__s32 speed;
114 			__u32 format;
115 		} play;
116 
117 		struct {
118 			__u32 data[16];
119 		} raw;
120 	};
121 };
122 
123 /* FIELD_UNKNOWN can be used if the hardware does not know whether
124    the Vsync is for an odd, even or progressive (i.e. non-interlaced)
125    field. */
126 #define VIDEO_VSYNC_FIELD_UNKNOWN  	(0)
127 #define VIDEO_VSYNC_FIELD_ODD 		(1)
128 #define VIDEO_VSYNC_FIELD_EVEN		(2)
129 #define VIDEO_VSYNC_FIELD_PROGRESSIVE	(3)
130 
131 struct video_event {
132 	__s32 type;
133 #define VIDEO_EVENT_SIZE_CHANGED	1
134 #define VIDEO_EVENT_FRAME_RATE_CHANGED	2
135 #define VIDEO_EVENT_DECODER_STOPPED 	3
136 #define VIDEO_EVENT_VSYNC 		4
137 	__kernel_time_t timestamp;
138 	union {
139 		video_size_t size;
140 		unsigned int frame_rate;	/* in frames per 1000sec */
141 		unsigned char vsync_field;	/* unknown/odd/even/progressive */
142 	} u;
143 };
144 
145 
146 struct video_status {
147 	int                   video_blank;   /* blank video on freeze? */
148 	video_play_state_t    play_state;    /* current state of playback */
149 	video_stream_source_t stream_source; /* current source (demux/memory) */
150 	video_format_t        video_format;  /* current aspect ratio of stream*/
151 	video_displayformat_t display_format;/* selected cropping mode */
152 };
153 
154 
155 struct video_still_picture {
156 	char __user *iFrame;        /* pointer to a single iframe in memory */
157 	__s32 size;
158 };
159 
160 
161 typedef
162 struct video_highlight {
163 	int     active;      /*    1=show highlight, 0=hide highlight */
164 	__u8    contrast1;   /*    7- 4  Pattern pixel contrast */
165 			     /*    3- 0  Background pixel contrast */
166 	__u8    contrast2;   /*    7- 4  Emphasis pixel-2 contrast */
167 			     /*    3- 0  Emphasis pixel-1 contrast */
168 	__u8    color1;      /*    7- 4  Pattern pixel color */
169 			     /*    3- 0  Background pixel color */
170 	__u8    color2;      /*    7- 4  Emphasis pixel-2 color */
171 			     /*    3- 0  Emphasis pixel-1 color */
172 	__u32    ypos;       /*   23-22  auto action mode */
173 			     /*   21-12  start y */
174 			     /*    9- 0  end y */
175 	__u32    xpos;       /*   23-22  button color number */
176 			     /*   21-12  start x */
177 			     /*    9- 0  end x */
178 } video_highlight_t;
179 
180 
181 typedef struct video_spu {
182 	int active;
183 	int stream_id;
184 } video_spu_t;
185 
186 
187 typedef struct video_spu_palette {      /* SPU Palette information */
188 	int length;
189 	__u8 __user *palette;
190 } video_spu_palette_t;
191 
192 
193 typedef struct video_navi_pack {
194 	int length;          /* 0 ... 1024 */
195 	__u8 data[1024];
196 } video_navi_pack_t;
197 
198 
199 typedef __u16 video_attributes_t;
200 /*   bits: descr. */
201 /*   15-14 Video compression mode (0=MPEG-1, 1=MPEG-2) */
202 /*   13-12 TV system (0=525/60, 1=625/50) */
203 /*   11-10 Aspect ratio (0=4:3, 3=16:9) */
204 /*    9- 8 permitted display mode on 4:3 monitor (0=both, 1=only pan-sca */
205 /*    7    line 21-1 data present in GOP (1=yes, 0=no) */
206 /*    6    line 21-2 data present in GOP (1=yes, 0=no) */
207 /*    5- 3 source resolution (0=720x480/576, 1=704x480/576, 2=352x480/57 */
208 /*    2    source letterboxed (1=yes, 0=no) */
209 /*    0    film/camera mode (0=
210  *camera, 1=film (625/50 only)) */
211 
212 
213 /* bit definitions for capabilities: */
214 /* can the hardware decode MPEG1 and/or MPEG2? */
215 #define VIDEO_CAP_MPEG1   1
216 #define VIDEO_CAP_MPEG2   2
217 /* can you send a system and/or program stream to video device?
218    (you still have to open the video and the audio device but only
219     send the stream to the video device) */
220 #define VIDEO_CAP_SYS     4
221 #define VIDEO_CAP_PROG    8
222 /* can the driver also handle SPU, NAVI and CSS encoded data?
223    (CSS API is not present yet) */
224 #define VIDEO_CAP_SPU    16
225 #define VIDEO_CAP_NAVI   32
226 #define VIDEO_CAP_CSS    64
227 
228 
229 #define VIDEO_STOP                 _IO('o', 21)
230 #define VIDEO_PLAY                 _IO('o', 22)
231 #define VIDEO_FREEZE               _IO('o', 23)
232 #define VIDEO_CONTINUE             _IO('o', 24)
233 #define VIDEO_SELECT_SOURCE        _IO('o', 25)
234 #define VIDEO_SET_BLANK            _IO('o', 26)
235 #define VIDEO_GET_STATUS           _IOR('o', 27, struct video_status)
236 #define VIDEO_GET_EVENT            _IOR('o', 28, struct video_event)
237 #define VIDEO_SET_DISPLAY_FORMAT   _IO('o', 29)
238 #define VIDEO_STILLPICTURE         _IOW('o', 30, struct video_still_picture)
239 #define VIDEO_FAST_FORWARD         _IO('o', 31)
240 #define VIDEO_SLOWMOTION           _IO('o', 32)
241 #define VIDEO_GET_CAPABILITIES     _IOR('o', 33, unsigned int)
242 #define VIDEO_CLEAR_BUFFER         _IO('o',  34)
243 #define VIDEO_SET_ID               _IO('o', 35)
244 #define VIDEO_SET_STREAMTYPE       _IO('o', 36)
245 #define VIDEO_SET_FORMAT           _IO('o', 37)
246 #define VIDEO_SET_SYSTEM           _IO('o', 38)
247 #define VIDEO_SET_HIGHLIGHT        _IOW('o', 39, video_highlight_t)
248 #define VIDEO_SET_SPU              _IOW('o', 50, video_spu_t)
249 #define VIDEO_SET_SPU_PALETTE      _IOW('o', 51, video_spu_palette_t)
250 #define VIDEO_GET_NAVI             _IOR('o', 52, video_navi_pack_t)
251 #define VIDEO_SET_ATTRIBUTES       _IO('o', 53)
252 #define VIDEO_GET_SIZE             _IOR('o', 55, video_size_t)
253 #define VIDEO_GET_FRAME_RATE       _IOR('o', 56, unsigned int)
254 
255 /**
256  * VIDEO_GET_PTS
257  *
258  * Read the 33 bit presentation time stamp as defined
259  * in ITU T-REC-H.222.0 / ISO/IEC 13818-1.
260  *
261  * The PTS should belong to the currently played
262  * frame if possible, but may also be a value close to it
263  * like the PTS of the last decoded frame or the last PTS
264  * extracted by the PES parser.
265  */
266 #define VIDEO_GET_PTS              _IOR('o', 57, __u64)
267 
268 /* Read the number of displayed frames since the decoder was started */
269 #define VIDEO_GET_FRAME_COUNT  	   _IOR('o', 58, __u64)
270 
271 #define VIDEO_COMMAND     	   _IOWR('o', 59, struct video_command)
272 #define VIDEO_TRY_COMMAND 	   _IOWR('o', 60, struct video_command)
273 
274 #endif /* _UAPI_DVBVIDEO_H_ */
275