service_runtime/include/sys/audio_video.h

   1 /*
   2  * Copyright 2008, Google Inc.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met:
   8  *
   9  *     * Redistributions of source code must retain the above copyright
  10  * notice, this list of conditions and the following disclaimer.
  11  *     * Redistributions in binary form must reproduce the above
  12  * copyright notice, this list of conditions and the following disclaimer
  13  * in the documentation and/or other materials provided with the
  14  * distribution.
  15  *     * Neither the name of Google Inc. nor the names of its
  16  * contributors may be used to endorse or promote products derived from
  17  * this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  22  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  23  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  25  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  29  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32
  33 /*
  34  * NaCl low-level runtime library interfaces.
  35  *
  36  * Note: audio/video function declarations have moved to
  37  *     native_client/tools/libav
  38  *
  39  * Applications should #include <nacl/nacl_av.h> instead of this file.
  40  *
  41  */
  42
  43 #ifndef NATIVE_CLIENT_SERVICE_RUNTIME_AUDIO_VIDEO_H_
  44 #define NATIVE_CLIENT_SERVICE_RUNTIME_AUDIO_VIDEO_H_
  45
  46 #ifdef __native_client__
  47 # include <stdint.h>
  48 # include <machine/_default_types.h>
  49 #else
  50 # include "native_client/include/portability.h"
  51 #endif
  52
  53 /**
  54  * @file
  55  * Defines a basic audio/video interface for Native Client applications.
  56  *
  57  * @addtogroup audio_video
  58  * @{
  59  */
  60
  61 #ifdef __cplusplus
  62 extern "C" {
  63 #endif
  64
  65 #define kNaClAudioBufferLength (16 * 1024)
  66 #define kNaClVideoMinWindowSize (32)
  67 #define kNaClVideoMaxWindowSize (4096)
  68
  69 /**
  70  * @nacl
  71  * Subsystem enumerations for nacl_multimedia_init()
  72  * These values can be used as a bitset.
  73  * To initialize multiple subsystems, use the | operator to
  74  * combine them, for example:
  75  * NACL_SUBSYSTEM_VIDEO | NACL_SUBSYSTEM_AUDIO
  76  */
  77 enum {
  78   NACL_SUBSYSTEM_VIDEO = 0x01,  /**< application will output video */
  79   NACL_SUBSYSTEM_AUDIO = 0x02,  /**< application will emit audio */
  80   NACL_SUBSYSTEM_EMBED = 0x04   /**< application will embed in browser */
  81 };
  82
  83 /**
  84  * @nacl
  85  * Audio format enumerations for nacl_audio_init()
  86  * Describes the source data format that will be used to drive
  87  * audio output.
  88  */
  89 enum NaClAudioFormat {
  90   NACL_AUDIO_FORMAT_STEREO_44K = 0,   /**< 44.1kHz 16 bit stereo */
  91   NACL_AUDIO_FORMAT_STEREO_48K       /**< 48kHz 16 bit stereo */
  92 };
  93
  94 /**
  95  * @nacl
  96  * Event type enumerations used to identify event structure.
  97  */
  98 enum NaClEvent {
  99   NACL_EVENT_NOT_USED = 0,
 100   NACL_EVENT_ACTIVE,             /**< triggered when focus gained / lost */
 101   NACL_EVENT_EXPOSE,             /**< external source requests redraw */
 102   NACL_EVENT_KEY_DOWN,           /**< key down (pressed) */
 103   NACL_EVENT_KEY_UP,             /**< key up (released) */
 104   NACL_EVENT_MOUSE_MOTION,       /**< mouse movement */
 105   NACL_EVENT_MOUSE_BUTTON_DOWN,  /**< mouse button down (pressed) */
 106   NACL_EVENT_MOUSE_BUTTON_UP,    /**< mouse button up (released) */
 107   NACL_EVENT_QUIT,               /**< application quit */
 108   NACL_EVENT_UNSUPPORTED
 109 };
 110
 111 /**
 112  * @nacl
 113  * Key enumerations
 114  * Do not alter these mappings; they must match SDL.
 115  */
 116 enum NaClKey {
 117   NACL_KEY_UNKNOWN      = 0,
 118   NACL_KEY_FIRST        = 0,
 119   NACL_KEY_BACKSPACE    = 8,
 120   NACL_KEY_TAB          = 9,
 121   NACL_KEY_CLEAR        = 12,
 122   NACL_KEY_RETURN       = 13,
 123   NACL_KEY_PAUSE        = 19,
 124   NACL_KEY_ESCAPE       = 27,
 125   NACL_KEY_SPACE        = 32,
 126   NACL_KEY_EXCLAIM      = 33,
 127   NACL_KEY_QUOTEDBL     = 34,
 128   NACL_KEY_HASH         = 35,
 129   NACL_KEY_DOLLAR       = 36,
 130   NACL_KEY_AMPERSAND    = 38,
 131   NACL_KEY_QUOTE        = 39,
 132   NACL_KEY_LEFTPAREN    = 40,
 133   NACL_KEY_RIGHTPAREN   = 41,
 134   NACL_KEY_ASTERISK     = 42,
 135   NACL_KEY_PLUS         = 43,
 136   NACL_KEY_COMMA        = 44,
 137   NACL_KEY_MINUS        = 45,
 138   NACL_KEY_PERIOD       = 46,
 139   NACL_KEY_SLASH        = 47,
 140   NACL_KEY_0            = 48,
 141   NACL_KEY_1            = 49,
 142   NACL_KEY_2            = 50,
 143   NACL_KEY_3            = 51,
 144   NACL_KEY_4            = 52,
 145   NACL_KEY_5            = 53,
 146   NACL_KEY_6            = 54,
 147   NACL_KEY_7            = 55,
 148   NACL_KEY_8            = 56,
 149   NACL_KEY_9            = 57,
 150   NACL_KEY_COLON        = 58,
 151   NACL_KEY_SEMICOLON    = 59,
 152   NACL_KEY_LESS         = 60,
 153   NACL_KEY_EQUALS       = 61,
 154   NACL_KEY_GREATER      = 62,
 155   NACL_KEY_QUESTION     = 63,
 156   NACL_KEY_AT           = 64,
 157   NACL_KEY_LEFTBRACKET  = 91,
 158   NACL_KEY_BACKSLASH    = 92,
 159   NACL_KEY_RIGHTBRACKET = 93,
 160   NACL_KEY_CARET        = 94,
 161   NACL_KEY_UNDERSCORE   = 95,
 162   NACL_KEY_BACKQUOTE    = 96,
 163   NACL_KEY_a            = 97,
 164   NACL_KEY_b            = 98,
 165   NACL_KEY_c            = 99,
 166   NACL_KEY_d            = 100,
 167   NACL_KEY_e            = 101,
 168   NACL_KEY_f            = 102,
 169   NACL_KEY_g            = 103,
 170   NACL_KEY_h            = 104,
 171   NACL_KEY_i            = 105,
 172   NACL_KEY_j            = 106,
 173   NACL_KEY_k            = 107,
 174   NACL_KEY_l            = 108,
 175   NACL_KEY_m            = 109,
 176   NACL_KEY_n            = 110,
 177   NACL_KEY_o            = 111,
 178   NACL_KEY_p            = 112,
 179   NACL_KEY_q            = 113,
 180   NACL_KEY_r            = 114,
 181   NACL_KEY_s            = 115,
 182   NACL_KEY_t            = 116,
 183   NACL_KEY_u            = 117,
 184   NACL_KEY_v            = 118,
 185   NACL_KEY_w            = 119,
 186   NACL_KEY_x            = 120,
 187   NACL_KEY_y            = 121,
 188   NACL_KEY_z            = 122,
 189   NACL_KEY_DELETE       = 127,
 190   NACL_KEY_WORLD_0      = 160,
 191   NACL_KEY_WORLD_1      = 161,
 192   NACL_KEY_WORLD_2      = 162,
 193   NACL_KEY_WORLD_3      = 163,
 194   NACL_KEY_WORLD_4      = 164,
 195   NACL_KEY_WORLD_5      = 165,
 196   NACL_KEY_WORLD_6      = 166,
 197   NACL_KEY_WORLD_7      = 167,
 198   NACL_KEY_WORLD_8      = 168,
 199   NACL_KEY_WORLD_9      = 169,
 200   NACL_KEY_WORLD_10     = 170,
 201   NACL_KEY_WORLD_11     = 171,
 202   NACL_KEY_WORLD_12     = 172,
 203   NACL_KEY_WORLD_13     = 173,
 204   NACL_KEY_WORLD_14     = 174,
 205   NACL_KEY_WORLD_15     = 175,
 206   NACL_KEY_WORLD_16     = 176,
 207   NACL_KEY_WORLD_17     = 177,
 208   NACL_KEY_WORLD_18     = 178,
 209   NACL_KEY_WORLD_19     = 179,
 210   NACL_KEY_WORLD_20     = 180,
 211   NACL_KEY_WORLD_21     = 181,
 212   NACL_KEY_WORLD_22     = 182,
 213   NACL_KEY_WORLD_23     = 183,
 214   NACL_KEY_WORLD_24     = 184,
 215   NACL_KEY_WORLD_25     = 185,
 216   NACL_KEY_WORLD_26     = 186,
 217   NACL_KEY_WORLD_27     = 187,
 218   NACL_KEY_WORLD_28     = 188,
 219   NACL_KEY_WORLD_29     = 189,
 220   NACL_KEY_WORLD_30     = 190,
 221   NACL_KEY_WORLD_31     = 191,
 222   NACL_KEY_WORLD_32     = 192,
 223   NACL_KEY_WORLD_33     = 193,
 224   NACL_KEY_WORLD_34     = 194,
 225   NACL_KEY_WORLD_35     = 195,
 226   NACL_KEY_WORLD_36     = 196,
 227   NACL_KEY_WORLD_37     = 197,
 228   NACL_KEY_WORLD_38     = 198,
 229   NACL_KEY_WORLD_39     = 199,
 230   NACL_KEY_WORLD_40     = 200,
 231   NACL_KEY_WORLD_41     = 201,
 232   NACL_KEY_WORLD_42     = 202,
 233   NACL_KEY_WORLD_43     = 203,
 234   NACL_KEY_WORLD_44     = 204,
 235   NACL_KEY_WORLD_45     = 205,
 236   NACL_KEY_WORLD_46     = 206,
 237   NACL_KEY_WORLD_47     = 207,
 238   NACL_KEY_WORLD_48     = 208,
 239   NACL_KEY_WORLD_49     = 209,
 240   NACL_KEY_WORLD_50     = 210,
 241   NACL_KEY_WORLD_51     = 211,
 242   NACL_KEY_WORLD_52     = 212,
 243   NACL_KEY_WORLD_53     = 213,
 244   NACL_KEY_WORLD_54     = 214,
 245   NACL_KEY_WORLD_55     = 215,
 246   NACL_KEY_WORLD_56     = 216,
 247   NACL_KEY_WORLD_57     = 217,
 248   NACL_KEY_WORLD_58     = 218,
 249   NACL_KEY_WORLD_59     = 219,
 250   NACL_KEY_WORLD_60     = 220,
 251   NACL_KEY_WORLD_61     = 221,
 252   NACL_KEY_WORLD_62     = 222,
 253   NACL_KEY_WORLD_63     = 223,
 254   NACL_KEY_WORLD_64     = 224,
 255   NACL_KEY_WORLD_65     = 225,
 256   NACL_KEY_WORLD_66     = 226,
 257   NACL_KEY_WORLD_67     = 227,
 258   NACL_KEY_WORLD_68     = 228,
 259   NACL_KEY_WORLD_69     = 229,
 260   NACL_KEY_WORLD_70     = 230,
 261   NACL_KEY_WORLD_71     = 231,
 262   NACL_KEY_WORLD_72     = 232,
 263   NACL_KEY_WORLD_73     = 233,
 264   NACL_KEY_WORLD_74     = 234,
 265   NACL_KEY_WORLD_75     = 235,
 266   NACL_KEY_WORLD_76     = 236,
 267   NACL_KEY_WORLD_77     = 237,
 268   NACL_KEY_WORLD_78     = 238,
 269   NACL_KEY_WORLD_79     = 239,
 270   NACL_KEY_WORLD_80     = 240,
 271   NACL_KEY_WORLD_81     = 241,
 272   NACL_KEY_WORLD_82     = 242,
 273   NACL_KEY_WORLD_83     = 243,
 274   NACL_KEY_WORLD_84     = 244,
 275   NACL_KEY_WORLD_85     = 245,
 276   NACL_KEY_WORLD_86     = 246,
 277   NACL_KEY_WORLD_87     = 247,
 278   NACL_KEY_WORLD_88     = 248,
 279   NACL_KEY_WORLD_89     = 249,
 280   NACL_KEY_WORLD_90     = 250,
 281   NACL_KEY_WORLD_91     = 251,
 282   NACL_KEY_WORLD_92     = 252,
 283   NACL_KEY_WORLD_93     = 253,
 284   NACL_KEY_WORLD_94     = 254,
 285   NACL_KEY_WORLD_95     = 255,
 286
 287   /* numeric keypad */
 288   NACL_KEY_KP0          = 256,
 289   NACL_KEY_KP1          = 257,
 290   NACL_KEY_KP2          = 258,
 291   NACL_KEY_KP3          = 259,
 292   NACL_KEY_KP4          = 260,
 293   NACL_KEY_KP5          = 261,
 294   NACL_KEY_KP6          = 262,
 295   NACL_KEY_KP7          = 263,
 296   NACL_KEY_KP8          = 264,
 297   NACL_KEY_KP9          = 265,
 298   NACL_KEY_KP_PERIOD    = 266,
 299   NACL_KEY_KP_DIVIDE    = 267,
 300   NACL_KEY_KP_MULTIPLY  = 268,
 301   NACL_KEY_KP_MINUS     = 269,
 302   NACL_KEY_KP_PLUS      = 270,
 303   NACL_KEY_KP_ENTER     = 271,
 304   NACL_KEY_KP_EQUALS    = 272,
 305
 306   /* arrow & insert/delete pad */
 307   NACL_KEY_UP           = 273,
 308   NACL_KEY_DOWN         = 274,
 309   NACL_KEY_RIGHT        = 275,
 310   NACL_KEY_LEFT         = 276,
 311   NACL_KEY_INSERT       = 277,
 312   NACL_KEY_HOME         = 278,
 313   NACL_KEY_END          = 279,
 314   NACL_KEY_PAGEUP       = 280,
 315   NACL_KEY_PAGEDOWN     = 281,
 316
 317   /* function keys */
 318   NACL_KEY_F1           = 282,
 319   NACL_KEY_F2           = 283,
 320   NACL_KEY_F3           = 284,
 321   NACL_KEY_F4           = 285,
 322   NACL_KEY_F5           = 286,
 323   NACL_KEY_F6           = 287,
 324   NACL_KEY_F7           = 288,
 325   NACL_KEY_F8           = 289,
 326   NACL_KEY_F9           = 290,
 327   NACL_KEY_F10          = 291,
 328   NACL_KEY_F11          = 292,
 329   NACL_KEY_F12          = 293,
 330   NACL_KEY_F13          = 294,
 331   NACL_KEY_F14          = 295,
 332   NACL_KEY_F15          = 296,
 333
 334   /* modifier keys */
 335   NACL_KEY_NUMLOCK      = 300,
 336   NACL_KEY_CAPSLOCK     = 301,
 337   NACL_KEY_SCROLLOCK    = 302,
 338   NACL_KEY_RSHIFT       = 303,
 339   NACL_KEY_LSHIFT       = 304,
 340   NACL_KEY_RCTRL        = 305,
 341   NACL_KEY_LCTRL        = 306,
 342   NACL_KEY_RALT         = 307,
 343   NACL_KEY_LALT         = 308,
 344   NACL_KEY_RMETA        = 309,
 345   NACL_KEY_LMETA        = 310,
 346   NACL_KEY_LSUPER       = 311,
 347   NACL_KEY_RSUPER       = 312,
 348   NACL_KEY_MODE         = 313,
 349   NACL_KEY_COMPOSE      = 314,
 350
 351   /* misc keys */
 352   NACL_KEY_HELP         = 315,
 353   NACL_KEY_PRINT        = 316,
 354   NACL_KEY_SYSREQ       = 317,
 355   NACL_KEY_BREAK        = 318,
 356   NACL_KEY_MENU         = 319,
 357   NACL_KEY_POWER        = 320,
 358   NACL_KEY_EURO         = 321,
 359   NACL_KEY_UNDO         = 322,
 360
 361   /* Add any other keys here */
 362   NACL_KEY_LAST
 363 };
 364
 365 /**
 366  * @nacl
 367  * Key modifier enumerations
 368  * These values can be used as a bitset.
 369  * Do not alter these mappings; they must match SDL.
 370  */
 371 enum NaClKeyMod {
 372   /* mods represented as bitset */
 373   NACL_KEYMOD_NONE  = 0x0000,
 374   NACL_KEYMOD_LSHIFT= 0x0001,
 375   NACL_KEYMOD_RSHIFT= 0x0002,
 376   NACL_KEYMOD_LCTRL = 0x0040,
 377   NACL_KEYMOD_RCTRL = 0x0080,
 378   NACL_KEYMOD_LALT  = 0x0100,
 379   NACL_KEYMOD_RALT  = 0x0200,
 380   NACL_KEYMOD_LMETA = 0x0400,
 381   NACL_KEYMOD_RMETA = 0x0800,
 382   NACL_KEYMOD_NUM   = 0x1000,
 383   NACL_KEYMOD_CAPS  = 0x2000,
 384   NACL_KEYMOD_MODE  = 0x4000,
 385   NACL_KEYMOD_RESERVED = 0x8000
 386 };
 387
 388 /**
 389  * @nacl
 390  * Mouse Buttons.  Do not alter these mappings; they must match SDL.
 391  */
 392 enum NaClMouseButton {
 393   NACL_MOUSE_BUTTON_LEFT = 1,
 394   NACL_MOUSE_BUTTON_MIDDLE = 2,
 395   NACL_MOUSE_BUTTON_RIGHT = 3,
 396   NACL_MOUSE_SCROLL_UP = 4,
 397   NACL_MOUSE_SCROLL_DOWN = 5
 398 };
 399
 400 /**
 401  * @nacl
 402  * Mouse states
 403  * These values can be used as bitsets.  Do not alter these mappings; they
 404  * must match SDL.
 405  */
 406 enum NaClMouseState {
 407   NACL_MOUSE_STATE_LEFT_BUTTON_PRESSED = 1,
 408   NACL_MOUSE_STATE_MIDDLE_BUTTON_PRESSED = 2,
 409   NACL_MOUSE_STATE_RIGHT_BUTTON_PRESSED = 4
 410 };
 411
 412 /**
 413  * @nacl
 414  * Gain enumerations for NaClMultimediaActiveEvent
 415  * These values can be used as a bitset.  Do not alter these mappings; they
 416  * must match SDL.
 417  */
 418 enum NaClActive {
 419   NACL_ACTIVE_MOUSE = 1,        /**< mouse leaving/entering */
 420   NACL_ACTIVE_INPUT_FOCUS = 2,  /**< input focus lost/restored */
 421   NACL_ACTIVE_APPLICATION = 4   /**< application minimized/restored */
 422 };
 423
 424 /**
 425  * @nacl
 426  * Key symbol structure
 427  */
 428 struct NaClMultimediaKeySymbol {
 429   uint8_t scancode;     /**< H/W scancode */
 430   int16_t sym;          /**< NaClKey symbol */
 431   int16_t mod;          /**< NaClKeyMod key modifier */
 432   uint16_t unicode;
 433 };
 434
 435 /**
 436  * @nacl
 437  * Active event.  Generated when mouse cursor exits/enters window,
 438  * input focus is lost/gained, and application is minimized/restored.
 439  */
 440 struct NaClMultimediaActiveEvent {
 441   uint8_t type;        /**< NACL_EVENT_ACTIVE */
 442   uint8_t gain;        /**< NaClActive gain */
 443   uint8_t state;       /**< state 0 - lost, minimized, leaving
 444                                   1 - acquired, restored, entering */
 445 };
 446
 447 /**
 448  * @nacl
 449  * Expose event.  Generated when the windowing system requests
 450  * an application redraw/repaint update.  Upon receiving this
 451  * event, an application should call nacl_video_update()
 452  */
 453 struct NaClMultimediaExposeEvent {
 454   uint8_t type;        /**< NACL_EVENT_EXPOSE */
 455 };
 456
 457 /**
 458  * @nacl
 459  * Keyboard event.  For both key down and key up events.
 460  */
 461 struct NaClMultimediaKeyboardEvent {
 462   uint8_t type;        /**< NACL_EVENT_KEY_UP or NACL_EVENT_KEY_DOWN */
 463   uint8_t which;       /**< which keyboard (0 for primary) */
 464   uint8_t state;       /**< indicates pressed (1) or released (0) */
 465   struct NaClMultimediaKeySymbol keysym;  /**< key info */
 466 };
 467
 468 /**
 469  * @nacl
 470  * Mouse motion event.  Generated when mouse moved by user and
 471  * application is in focus.
 472  */
 473 struct NaClMultimediaMouseMotionEvent {
 474   uint8_t type;        /**< NACL_EVENT_MOUSE_MOTION */
 475   uint8_t which;       /**< which mouse (0 for primary) */
 476   uint8_t state;       /**< NaClMouseState button state bitset */
 477   uint16_t x;          /**< x position */
 478   uint16_t y;          /**< y position */
 479   int16_t xrel;        /**< relative x position */
 480   int16_t yrel;        /**< relative y position */
 481 };
 482
 483 /**
 484  * @nacl
 485  * Mouse button event.  Generated when user presses or releases
 486  * a mouse button, including the scroll wheel.
 487  */
 488 struct NaClMultimediaMouseButtonEvent {
 489   uint8_t type;        /**< NACL_EVENT_MOUSE_BUTTON_UP or
 490                             NACL_EVENT_MOUSE_BUTTON_DOWN */
 491   uint8_t which;       /**< which mouse (0 for primary) */
 492   uint8_t button;      /**< NaClMouseButton which button */
 493   uint8_t state;       /**< indicates pressed (1) or released (0) */
 494   uint16_t x;          /**< x position */
 495   uint16_t y;          /**< y position */
 496 };
 497
 498 /**
 499  * @nacl
 500  * Quit event.  The application should quit when receiving this event.
 501  * This includes shutting down the video subsystem with nacl_video_shutdown()
 502  * and other active subsystems (audio) followed by shutting down the
 503  * multimedia library with nacl_multimedia_shutdown().
 504  */
 505 struct NaClMultimediaQuitEvent {
 506   uint8_t type;        /**< NACL_EVENT_QUIT */
 507 };
 508
 509 /**
 510  * @nacl
 511  * Pad event.  Not used, but defines the largest size the event union
 512  * should ever be.  Events added in the future should never be larger than
 513  * this structure.  64 byte events should be enough for all sane events.
 514  *
 515  *    *** Do not ever change the size of this structure. ***
 516  *        Doing so will break other existing native client applications
 517  */
 518 struct NaClMultimediaPadEvent {
 519   uint8_t pad[64];
 520 };
 521
 522 /**
 523  * @nacl
 524  * The event wrapper.  Use type field to select which structure to process.
 525  * At all times, sizeof NaClMultimediaEvent must match sizeof
 526  * NaClMultimediaPadEvent.
 527  */
 528 union NaClMultimediaEvent {
 529   uint8_t type;        /**< one of NaClEvent */
 530   struct NaClMultimediaActiveEvent active;
 531   struct NaClMultimediaExposeEvent expose;
 532   struct NaClMultimediaKeyboardEvent key;
 533   struct NaClMultimediaMouseMotionEvent motion;
 534   struct NaClMultimediaMouseButtonEvent button;
 535   struct NaClMultimediaQuitEvent quit;
 536   struct NaClMultimediaPadEvent pad;
 537 };
 538
 539
 540 #ifdef __cplusplus
 541 }
 542 #endif
 543
 544 /**
 545  * @}
 546  * End of Audio/Video group
 547  */
 548
 549 #endif  /* NATIVE_CLIENT_SERVICE_RUNTIME_AUDIO_VIDEO_H_ */