include/linux/dvb/video.h

   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 _DVBVIDEO_H_
  25 #define _DVBVIDEO_H_
  26
  27 #include <linux/compiler.h>
  28
  29 #ifdef __KERNEL__
  30 #include <linux/types.h>
  31 #else
  32 #include <stdint.h>
  33 #include <time.h>
  34 #endif
  35
  36
  37 typedef enum {
  38         VIDEO_FORMAT_4_3,     /* Select 4:3 format */
  39         VIDEO_FORMAT_16_9,    /* Select 16:9 format. */
  40         VIDEO_FORMAT_221_1    /* 2.21:1 */
  41 } video_format_t;
  42
  43
  44 typedef enum {
  45          VIDEO_SYSTEM_PAL,
  46          VIDEO_SYSTEM_NTSC,
  47          VIDEO_SYSTEM_PALN,
  48          VIDEO_SYSTEM_PALNc,
  49          VIDEO_SYSTEM_PALM,
  50          VIDEO_SYSTEM_NTSC60,
  51          VIDEO_SYSTEM_PAL60,
  52          VIDEO_SYSTEM_PALM60
  53 } video_system_t;
  54
  55
  56 typedef enum {
  57         VIDEO_PAN_SCAN,       /* use pan and scan format */
  58         VIDEO_LETTER_BOX,     /* use letterbox format */
  59         VIDEO_CENTER_CUT_OUT  /* use center cut out format */
  60 } video_displayformat_t;
  61
  62 typedef struct {
  63         int w;
  64         int h;
  65         video_format_t aspect_ratio;
  66 } video_size_t;
  67
  68 typedef enum {
  69         VIDEO_SOURCE_DEMUX, /* Select the demux as the main source */
  70         VIDEO_SOURCE_MEMORY /* If this source is selected, the stream
  71                                comes from the user through the write
  72                                system call */
  73 } video_stream_source_t;
  74
  75
  76 typedef enum {
  77         VIDEO_STOPPED, /* Video is stopped */
  78         VIDEO_PLAYING, /* Video is currently playing */
  79         VIDEO_FREEZED  /* Video is freezed */
  80 } video_play_state_t;
  81
  82
  83 /* Decoder commands */
  84 #define VIDEO_CMD_PLAY        (0)
  85 #define VIDEO_CMD_STOP        (1)
  86 #define VIDEO_CMD_FREEZE      (2)
  87 #define VIDEO_CMD_CONTINUE    (3)
  88
  89 /* Flags for VIDEO_CMD_FREEZE */
  90 #define VIDEO_CMD_FREEZE_TO_BLACK       (1 << 0)
  91
  92 /* Flags for VIDEO_CMD_STOP */
  93 #define VIDEO_CMD_STOP_TO_BLACK         (1 << 0)
  94 #define VIDEO_CMD_STOP_IMMEDIATELY      (1 << 1)
  95
  96 /* Play input formats: */
  97 /* The decoder has no special format requirements */
  98 #define VIDEO_PLAY_FMT_NONE         (0)
  99 /* The decoder requires full GOPs */
 100 #define VIDEO_PLAY_FMT_GOP          (1)
 101
 102 /* The structure must be zeroed before use by the application
 103    This ensures it can be extended safely in the future. */
 104 struct video_command {
 105         __u32 cmd;
 106         __u32 flags;
 107         union {
 108                 struct {
 109                         __u64 pts;
 110                 } stop;
 111
 112                 struct {
 113                         /* 0 or 1000 specifies normal speed,
 114                            1 specifies forward single stepping,
 115                            -1 specifies backward single stepping,
 116                            >1: playback at speed/1000 of the normal speed,
 117                            <-1: reverse playback at (-speed/1000) of the normal speed. */
 118                         __s32 speed;
 119                         __u32 format;
 120                 } play;
 121
 122                 struct {
 123                         __u32 data[16];
 124                 } raw;
 125         };
 126 };
 127
 128 /* FIELD_UNKNOWN can be used if the hardware does not know whether
 129    the Vsync is for an odd, even or progressive (i.e. non-interlaced)
 130    field. */
 131 #define VIDEO_VSYNC_FIELD_UNKNOWN       (0)
 132 #define VIDEO_VSYNC_FIELD_ODD           (1)
 133 #define VIDEO_VSYNC_FIELD_EVEN          (2)
 134 #define VIDEO_VSYNC_FIELD_PROGRESSIVE   (3)
 135
 136 struct video_event {
 137         int32_t type;
 138 #define VIDEO_EVENT_SIZE_CHANGED        1
 139 #define VIDEO_EVENT_FRAME_RATE_CHANGED  2
 140 #define VIDEO_EVENT_DECODER_STOPPED     3
 141 #define VIDEO_EVENT_VSYNC               4
 142         time_t timestamp;
 143         union {
 144                 video_size_t size;
 145                 unsigned int frame_rate;        /* in frames per 1000sec */
 146                 unsigned char vsync_field;      /* unknown/odd/even/progressive */
 147         } u;
 148 };
 149
 150
 151 struct video_status {
 152         int                   video_blank;   /* blank video on freeze? */
 153         video_play_state_t    play_state;    /* current state of playback */
 154         video_stream_source_t stream_source; /* current source (demux/memory) */
 155         video_format_t        video_format;  /* current aspect ratio of stream*/
 156         video_displayformat_t display_format;/* selected cropping mode */
 157 };
 158
 159
 160 struct video_still_picture {
 161         char __user *iFrame;        /* pointer to a single iframe in memory */
 162         int32_t size;
 163 };
 164
 165
 166 typedef
 167 struct video_highlight {
 168         int     active;      /*    1=show highlight, 0=hide highlight */
 169         uint8_t contrast1;   /*    7- 4  Pattern pixel contrast */
 170                              /*    3- 0  Background pixel contrast */
 171         uint8_t contrast2;   /*    7- 4  Emphasis pixel-2 contrast */
 172                              /*    3- 0  Emphasis pixel-1 contrast */
 173         uint8_t color1;      /*    7- 4  Pattern pixel color */
 174                              /*    3- 0  Background pixel color */
 175         uint8_t color2;      /*    7- 4  Emphasis pixel-2 color */
 176                              /*    3- 0  Emphasis pixel-1 color */
 177         uint32_t ypos;       /*   23-22  auto action mode */
 178                              /*   21-12  start y */
 179                              /*    9- 0  end y */
 180         uint32_t xpos;       /*   23-22  button color number */
 181                              /*   21-12  start x */
 182                              /*    9- 0  end x */
 183 } video_highlight_t;
 184
 185
 186 typedef struct video_spu {
 187         int active;
 188         int stream_id;
 189 } video_spu_t;
 190
 191
 192 typedef struct video_spu_palette {      /* SPU Palette information */
 193         int length;
 194         uint8_t __user *palette;
 195 } video_spu_palette_t;
 196
 197
 198 typedef struct video_navi_pack {
 199         int length;          /* 0 ... 1024 */
 200         uint8_t data[1024];
 201 } video_navi_pack_t;
 202
 203
 204 typedef uint16_t video_attributes_t;
 205 /*   bits: descr. */
 206 /*   15-14 Video compression mode (0=MPEG-1, 1=MPEG-2) */
 207 /*   13-12 TV system (0=525/60, 1=625/50) */
 208 /*   11-10 Aspect ratio (0=4:3, 3=16:9) */
 209 /*    9- 8 permitted display mode on 4:3 monitor (0=both, 1=only pan-sca */
 210 /*    7    line 21-1 data present in GOP (1=yes, 0=no) */
 211 /*    6    line 21-2 data present in GOP (1=yes, 0=no) */
 212 /*    5- 3 source resolution (0=720x480/576, 1=704x480/576, 2=352x480/57 */
 213 /*    2    source letterboxed (1=yes, 0=no) */
 214 /*    0    film/camera mode (0=camera, 1=film (625/50 only)) */
 215
 216
 217 /* bit definitions for capabilities: */
 218 /* can the hardware decode MPEG1 and/or MPEG2? */
 219 #define VIDEO_CAP_MPEG1   1
 220 #define VIDEO_CAP_MPEG2   2
 221 /* can you send a system and/or program stream to video device?
 222    (you still have to open the video and the audio device but only
 223     send the stream to the video device) */
 224 #define VIDEO_CAP_SYS     4
 225 #define VIDEO_CAP_PROG    8
 226 /* can the driver also handle SPU, NAVI and CSS encoded data?
 227    (CSS API is not present yet) */
 228 #define VIDEO_CAP_SPU    16
 229 #define VIDEO_CAP_NAVI   32
 230 #define VIDEO_CAP_CSS    64
 231
 232
 233 #define VIDEO_STOP                 _IO('o', 21)
 234 #define VIDEO_PLAY                 _IO('o', 22)
 235 #define VIDEO_FREEZE               _IO('o', 23)
 236 #define VIDEO_CONTINUE             _IO('o', 24)
 237 #define VIDEO_SELECT_SOURCE        _IO('o', 25)
 238 #define VIDEO_SET_BLANK            _IO('o', 26)
 239 #define VIDEO_GET_STATUS           _IOR('o', 27, struct video_status)
 240 #define VIDEO_GET_EVENT            _IOR('o', 28, struct video_event)
 241 #define VIDEO_SET_DISPLAY_FORMAT   _IO('o', 29)
 242 #define VIDEO_STILLPICTURE         _IOW('o', 30, struct video_still_picture)
 243 #define VIDEO_FAST_FORWARD         _IO('o', 31)
 244 #define VIDEO_SLOWMOTION           _IO('o', 32)
 245 #define VIDEO_GET_CAPABILITIES     _IOR('o', 33, unsigned int)
 246 #define VIDEO_CLEAR_BUFFER         _IO('o',  34)
 247 #define VIDEO_SET_ID               _IO('o', 35)
 248 #define VIDEO_SET_STREAMTYPE       _IO('o', 36)
 249 #define VIDEO_SET_FORMAT           _IO('o', 37)
 250 #define VIDEO_SET_SYSTEM           _IO('o', 38)
 251 #define VIDEO_SET_HIGHLIGHT        _IOW('o', 39, video_highlight_t)
 252 #define VIDEO_SET_SPU              _IOW('o', 50, video_spu_t)
 253 #define VIDEO_SET_SPU_PALETTE      _IOW('o', 51, video_spu_palette_t)
 254 #define VIDEO_GET_NAVI             _IOR('o', 52, video_navi_pack_t)
 255 #define VIDEO_SET_ATTRIBUTES       _IO('o', 53)
 256 #define VIDEO_GET_SIZE             _IOR('o', 55, video_size_t)
 257 #define VIDEO_GET_FRAME_RATE       _IOR('o', 56, unsigned int)
 258
 259 /**
 260  * VIDEO_GET_PTS
 261  *
 262  * Read the 33 bit presentation time stamp as defined
 263  * in ITU T-REC-H.222.0 / ISO/IEC 13818-1.
 264  *
 265  * The PTS should belong to the currently played
 266  * frame if possible, but may also be a value close to it
 267  * like the PTS of the last decoded frame or the last PTS
 268  * extracted by the PES parser.
 269  */
 270 #define VIDEO_GET_PTS              _IOR('o', 57, __u64)
 271
 272 /* Read the number of displayed frames since the decoder was started */
 273 #define VIDEO_GET_FRAME_COUNT      _IOR('o', 58, __u64)
 274
 275 #define VIDEO_COMMAND              _IOWR('o', 59, struct video_command)
 276 #define VIDEO_TRY_COMMAND          _IOWR('o', 60, struct video_command)
 277
 278 #endif /*_DVBVIDEO_H_*/