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                         __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         int32_t 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         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         int32_t size;
 158 };
 159
 160
 161 typedef
 162 struct video_highlight {
 163         int     active;      /*    1=show highlight, 0=hide highlight */
 164         uint8_t contrast1;   /*    7- 4  Pattern pixel contrast */
 165                              /*    3- 0  Background pixel contrast */
 166         uint8_t contrast2;   /*    7- 4  Emphasis pixel-2 contrast */
 167                              /*    3- 0  Emphasis pixel-1 contrast */
 168         uint8_t color1;      /*    7- 4  Pattern pixel color */
 169                              /*    3- 0  Background pixel color */
 170         uint8_t color2;      /*    7- 4  Emphasis pixel-2 color */
 171                              /*    3- 0  Emphasis pixel-1 color */
 172         uint32_t ypos;       /*   23-22  auto action mode */
 173                              /*   21-12  start y */
 174                              /*    9- 0  end y */
 175         uint32_t 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         uint8_t __user *palette;
 190 } video_spu_palette_t;
 191
 192
 193 typedef struct video_navi_pack {
 194         int length;          /* 0 ... 1024 */
 195         uint8_t data[1024];
 196 } video_navi_pack_t;
 197
 198
 199 typedef uint16_t 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=camera, 1=film (625/50 only)) */
 210
 211
 212 /* bit definitions for capabilities: */
 213 /* can the hardware decode MPEG1 and/or MPEG2? */
 214 #define VIDEO_CAP_MPEG1   1
 215 #define VIDEO_CAP_MPEG2   2
 216 /* can you send a system and/or program stream to video device?
 217    (you still have to open the video and the audio device but only
 218     send the stream to the video device) */
 219 #define VIDEO_CAP_SYS     4
 220 #define VIDEO_CAP_PROG    8
 221 /* can the driver also handle SPU, NAVI and CSS encoded data?
 222    (CSS API is not present yet) */
 223 #define VIDEO_CAP_SPU    16
 224 #define VIDEO_CAP_NAVI   32
 225 #define VIDEO_CAP_CSS    64
 226
 227
 228 #define VIDEO_STOP                 _IO('o', 21)
 229 #define VIDEO_PLAY                 _IO('o', 22)
 230 #define VIDEO_FREEZE               _IO('o', 23)
 231 #define VIDEO_CONTINUE             _IO('o', 24)
 232 #define VIDEO_SELECT_SOURCE        _IO('o', 25)
 233 #define VIDEO_SET_BLANK            _IO('o', 26)
 234 #define VIDEO_GET_STATUS           _IOR('o', 27, struct video_status)
 235 #define VIDEO_GET_EVENT            _IOR('o', 28, struct video_event)
 236 #define VIDEO_SET_DISPLAY_FORMAT   _IO('o', 29)
 237 #define VIDEO_STILLPICTURE         _IOW('o', 30, struct video_still_picture)
 238 #define VIDEO_FAST_FORWARD         _IO('o', 31)
 239 #define VIDEO_SLOWMOTION           _IO('o', 32)
 240 #define VIDEO_GET_CAPABILITIES     _IOR('o', 33, unsigned int)
 241 #define VIDEO_CLEAR_BUFFER         _IO('o',  34)
 242 #define VIDEO_SET_ID               _IO('o', 35)
 243 #define VIDEO_SET_STREAMTYPE       _IO('o', 36)
 244 #define VIDEO_SET_FORMAT           _IO('o', 37)
 245 #define VIDEO_SET_SYSTEM           _IO('o', 38)
 246 #define VIDEO_SET_HIGHLIGHT        _IOW('o', 39, video_highlight_t)
 247 #define VIDEO_SET_SPU              _IOW('o', 50, video_spu_t)
 248 #define VIDEO_SET_SPU_PALETTE      _IOW('o', 51, video_spu_palette_t)
 249 #define VIDEO_GET_NAVI             _IOR('o', 52, video_navi_pack_t)
 250 #define VIDEO_SET_ATTRIBUTES       _IO('o', 53)
 251 #define VIDEO_GET_SIZE             _IOR('o', 55, video_size_t)
 252 #define VIDEO_GET_FRAME_RATE       _IOR('o', 56, unsigned int)
 253
 254 /**
 255  * VIDEO_GET_PTS
 256  *
 257  * Read the 33 bit presentation time stamp as defined
 258  * in ITU T-REC-H.222.0 / ISO/IEC 13818-1.
 259  *
 260  * The PTS should belong to the currently played
 261  * frame if possible, but may also be a value close to it
 262  * like the PTS of the last decoded frame or the last PTS
 263  * extracted by the PES parser.
 264  */
 265 #define VIDEO_GET_PTS              _IOR('o', 57, __u64)
 266
 267 /* Read the number of displayed frames since the decoder was started */
 268 #define VIDEO_GET_FRAME_COUNT      _IOR('o', 58, __u64)
 269
 270 #define VIDEO_COMMAND              _IOWR('o', 59, struct video_command)
 271 #define VIDEO_TRY_COMMAND          _IOWR('o', 60, struct video_command)
 272
 273 #endif /*_DVBVIDEO_H_*/