third_party/decklink/mac/include/DeckLinkAPI.h

   1 /* -LICENSE-START-
   2 ** Copyright (c) 2014 Blackmagic Design
   3 **
   4 ** Permission is hereby granted, free of charge, to any person or organization
   5 ** obtaining a copy of the software and accompanying documentation covered by
   6 ** this license (the "Software") to use, reproduce, display, distribute,
   7 ** execute, and transmit the Software, and to prepare derivative works of the
   8 ** Software, and to permit third-parties to whom the Software is furnished to
   9 ** do so, all subject to the following:
  10 **
  11 ** The copyright notices in the Software and this entire statement, including
  12 ** the above license grant, this restriction and the following disclaimer,
  13 ** must be included in all copies of the Software, in whole or in part, and
  14 ** all derivative works of the Software, unless such copies or derivative
  15 ** works are solely in the form of machine-executable object code generated by
  16 ** a source language processor.
  17 **
  18 ** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 ** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 ** FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
  21 ** SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
  22 ** FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
  23 ** ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  24 ** DEALINGS IN THE SOFTWARE.
  25 ** -LICENSE-END-
  26 */
  27
  28 #ifndef BMD_DECKLINKAPI_H
  29 #define BMD_DECKLINKAPI_H
  30
  31
  32 #ifndef BMD_CONST
  33     #if defined(_MSC_VER)
  34         #define BMD_CONST __declspec(selectany) static const
  35     #else
  36         #define BMD_CONST static const
  37     #endif
  38 #endif
  39
  40 /* DeckLink API */
  41
  42 #include <CoreFoundation/CoreFoundation.h>
  43 #include <CoreFoundation/CFPlugInCOM.h>
  44 #include <stdint.h>
  45
  46 #include "DeckLinkAPITypes.h"
  47 #include "DeckLinkAPIModes.h"
  48 #include "DeckLinkAPIDiscovery.h"
  49 #include "DeckLinkAPIConfiguration.h"
  50 #include "DeckLinkAPIDeckControl.h"
  51
  52 #include "DeckLinkAPIStreaming.h"
  53
  54 #define BLACKMAGIC_DECKLINK_API_MAGIC   1
  55
  56 // Type Declarations
  57
  58
  59 // Interface ID Declarations
  60
  61 BMD_CONST REFIID IID_IDeckLinkVideoOutputCallback                 = /* 20AA5225-1958-47CB-820B-80A8D521A6EE */ {0x20,0xAA,0x52,0x25,0x19,0x58,0x47,0xCB,0x82,0x0B,0x80,0xA8,0xD5,0x21,0xA6,0xEE};
  62 BMD_CONST REFIID IID_IDeckLinkInputCallback                       = /* DD04E5EC-7415-42AB-AE4A-E80C4DFC044A */ {0xDD,0x04,0xE5,0xEC,0x74,0x15,0x42,0xAB,0xAE,0x4A,0xE8,0x0C,0x4D,0xFC,0x04,0x4A};
  63 BMD_CONST REFIID IID_IDeckLinkMemoryAllocator                     = /* B36EB6E7-9D29-4AA8-92EF-843B87A289E8 */ {0xB3,0x6E,0xB6,0xE7,0x9D,0x29,0x4A,0xA8,0x92,0xEF,0x84,0x3B,0x87,0xA2,0x89,0xE8};
  64 BMD_CONST REFIID IID_IDeckLinkAudioOutputCallback                 = /* 403C681B-7F46-4A12-B993-2BB127084EE6 */ {0x40,0x3C,0x68,0x1B,0x7F,0x46,0x4A,0x12,0xB9,0x93,0x2B,0xB1,0x27,0x08,0x4E,0xE6};
  65 BMD_CONST REFIID IID_IDeckLinkIterator                            = /* 50FB36CD-3063-4B73-BDBB-958087F2D8BA */ {0x50,0xFB,0x36,0xCD,0x30,0x63,0x4B,0x73,0xBD,0xBB,0x95,0x80,0x87,0xF2,0xD8,0xBA};
  66 BMD_CONST REFIID IID_IDeckLinkAPIInformation                      = /* 7BEA3C68-730D-4322-AF34-8A7152B532A4 */ {0x7B,0xEA,0x3C,0x68,0x73,0x0D,0x43,0x22,0xAF,0x34,0x8A,0x71,0x52,0xB5,0x32,0xA4};
  67 BMD_CONST REFIID IID_IDeckLinkOutput                              = /* CC5C8A6E-3F2F-4B3A-87EA-FD78AF300564 */ {0xCC,0x5C,0x8A,0x6E,0x3F,0x2F,0x4B,0x3A,0x87,0xEA,0xFD,0x78,0xAF,0x30,0x05,0x64};
  68 BMD_CONST REFIID IID_IDeckLinkInput                               = /* AF22762B-DFAC-4846-AA79-FA8883560995 */ {0xAF,0x22,0x76,0x2B,0xDF,0xAC,0x48,0x46,0xAA,0x79,0xFA,0x88,0x83,0x56,0x09,0x95};
  69 BMD_CONST REFIID IID_IDeckLinkVideoFrame                          = /* 3F716FE0-F023-4111-BE5D-EF4414C05B17 */ {0x3F,0x71,0x6F,0xE0,0xF0,0x23,0x41,0x11,0xBE,0x5D,0xEF,0x44,0x14,0xC0,0x5B,0x17};
  70 BMD_CONST REFIID IID_IDeckLinkMutableVideoFrame                   = /* 69E2639F-40DA-4E19-B6F2-20ACE815C390 */ {0x69,0xE2,0x63,0x9F,0x40,0xDA,0x4E,0x19,0xB6,0xF2,0x20,0xAC,0xE8,0x15,0xC3,0x90};
  71 BMD_CONST REFIID IID_IDeckLinkVideoFrame3DExtensions              = /* DA0F7E4A-EDC7-48A8-9CDD-2DB51C729CD7 */ {0xDA,0x0F,0x7E,0x4A,0xED,0xC7,0x48,0xA8,0x9C,0xDD,0x2D,0xB5,0x1C,0x72,0x9C,0xD7};
  72 BMD_CONST REFIID IID_IDeckLinkVideoInputFrame                     = /* 05CFE374-537C-4094-9A57-680525118F44 */ {0x05,0xCF,0xE3,0x74,0x53,0x7C,0x40,0x94,0x9A,0x57,0x68,0x05,0x25,0x11,0x8F,0x44};
  73 BMD_CONST REFIID IID_IDeckLinkVideoFrameAncillary                 = /* 732E723C-D1A4-4E29-9E8E-4A88797A0004 */ {0x73,0x2E,0x72,0x3C,0xD1,0xA4,0x4E,0x29,0x9E,0x8E,0x4A,0x88,0x79,0x7A,0x00,0x04};
  74 BMD_CONST REFIID IID_IDeckLinkAudioInputPacket                    = /* E43D5870-2894-11DE-8C30-0800200C9A66 */ {0xE4,0x3D,0x58,0x70,0x28,0x94,0x11,0xDE,0x8C,0x30,0x08,0x00,0x20,0x0C,0x9A,0x66};
  75 BMD_CONST REFIID IID_IDeckLinkScreenPreviewCallback               = /* B1D3F49A-85FE-4C5D-95C8-0B5D5DCCD438 */ {0xB1,0xD3,0xF4,0x9A,0x85,0xFE,0x4C,0x5D,0x95,0xC8,0x0B,0x5D,0x5D,0xCC,0xD4,0x38};
  76 BMD_CONST REFIID IID_IDeckLinkCocoaScreenPreviewCallback          = /* D174152F-8F96-4C07-83A5-DD5F5AF0A2AA */ {0xD1,0x74,0x15,0x2F,0x8F,0x96,0x4C,0x07,0x83,0xA5,0xDD,0x5F,0x5A,0xF0,0xA2,0xAA};
  77 BMD_CONST REFIID IID_IDeckLinkGLScreenPreviewHelper               = /* 504E2209-CAC7-4C1A-9FB4-C5BB6274D22F */ {0x50,0x4E,0x22,0x09,0xCA,0xC7,0x4C,0x1A,0x9F,0xB4,0xC5,0xBB,0x62,0x74,0xD2,0x2F};
  78 BMD_CONST REFIID IID_IDeckLinkNotificationCallback                = /* B002A1EC-070D-4288-8289-BD5D36E5FF0D */ {0xB0,0x02,0xA1,0xEC,0x07,0x0D,0x42,0x88,0x82,0x89,0xBD,0x5D,0x36,0xE5,0xFF,0x0D};
  79 BMD_CONST REFIID IID_IDeckLinkNotification                        = /* 0A1FB207-E215-441B-9B19-6FA1575946C5 */ {0x0A,0x1F,0xB2,0x07,0xE2,0x15,0x44,0x1B,0x9B,0x19,0x6F,0xA1,0x57,0x59,0x46,0xC5};
  80 BMD_CONST REFIID IID_IDeckLinkAttributes                          = /* ABC11843-D966-44CB-96E2-A1CB5D3135C4 */ {0xAB,0xC1,0x18,0x43,0xD9,0x66,0x44,0xCB,0x96,0xE2,0xA1,0xCB,0x5D,0x31,0x35,0xC4};
  81 BMD_CONST REFIID IID_IDeckLinkKeyer                               = /* 89AFCAF5-65F8-421E-98F7-96FE5F5BFBA3 */ {0x89,0xAF,0xCA,0xF5,0x65,0xF8,0x42,0x1E,0x98,0xF7,0x96,0xFE,0x5F,0x5B,0xFB,0xA3};
  82 BMD_CONST REFIID IID_IDeckLinkVideoConversion                     = /* 3BBCB8A2-DA2C-42D9-B5D8-88083644E99A */ {0x3B,0xBC,0xB8,0xA2,0xDA,0x2C,0x42,0xD9,0xB5,0xD8,0x88,0x08,0x36,0x44,0xE9,0x9A};
  83 BMD_CONST REFIID IID_IDeckLinkDeviceNotificationCallback          = /* 4997053B-0ADF-4CC8-AC70-7A50C4BE728F */ {0x49,0x97,0x05,0x3B,0x0A,0xDF,0x4C,0xC8,0xAC,0x70,0x7A,0x50,0xC4,0xBE,0x72,0x8F};
  84 BMD_CONST REFIID IID_IDeckLinkDiscovery                           = /* CDBF631C-BC76-45FA-B44D-C55059BC6101 */ {0xCD,0xBF,0x63,0x1C,0xBC,0x76,0x45,0xFA,0xB4,0x4D,0xC5,0x50,0x59,0xBC,0x61,0x01};
  85
  86 /* Enum BMDVideoOutputFlags - Flags to control the output of ancillary data along with video. */
  87
  88 typedef uint32_t BMDVideoOutputFlags;
  89 enum _BMDVideoOutputFlags {
  90     bmdVideoOutputFlagDefault                                    = 0,
  91     bmdVideoOutputVANC                                           = 1 << 0,
  92     bmdVideoOutputVITC                                           = 1 << 1,
  93     bmdVideoOutputRP188                                          = 1 << 2,
  94     bmdVideoOutputDualStream3D                                   = 1 << 4
  95 };
  96
  97 /* Enum BMDFrameFlags - Frame flags */
  98
  99 typedef uint32_t BMDFrameFlags;
 100 enum _BMDFrameFlags {
 101     bmdFrameFlagDefault                                          = 0,
 102     bmdFrameFlagFlipVertical                                     = 1 << 0,
 103
 104     /* Flags that are applicable only to instances of IDeckLinkVideoInputFrame */
 105
 106     bmdFrameHasNoInputSource                                     = 1 << 31
 107 };
 108
 109 /* Enum BMDVideoInputFlags - Flags applicable to video input */
 110
 111 typedef uint32_t BMDVideoInputFlags;
 112 enum _BMDVideoInputFlags {
 113     bmdVideoInputFlagDefault                                     = 0,
 114     bmdVideoInputEnableFormatDetection                           = 1 << 0,
 115     bmdVideoInputDualStream3D                                    = 1 << 1
 116 };
 117
 118 /* Enum BMDVideoInputFormatChangedEvents - Bitmask passed to the VideoInputFormatChanged notification to identify the properties of the input signal that have changed */
 119
 120 typedef uint32_t BMDVideoInputFormatChangedEvents;
 121 enum _BMDVideoInputFormatChangedEvents {
 122     bmdVideoInputDisplayModeChanged                              = 1 << 0,
 123     bmdVideoInputFieldDominanceChanged                           = 1 << 1,
 124     bmdVideoInputColorspaceChanged                               = 1 << 2
 125 };
 126
 127 /* Enum BMDDetectedVideoInputFormatFlags - Flags passed to the VideoInputFormatChanged notification to describe the detected video input signal */
 128
 129 typedef uint32_t BMDDetectedVideoInputFormatFlags;
 130 enum _BMDDetectedVideoInputFormatFlags {
 131     bmdDetectedVideoInputYCbCr422                                = 1 << 0,
 132     bmdDetectedVideoInputRGB444                                  = 1 << 1
 133 };
 134
 135 /* Enum BMDDeckLinkCapturePassthroughMode - Enumerates whether the video output is electrically connected to the video input or if the clean switching mode is enabled */
 136
 137 typedef uint32_t BMDDeckLinkCapturePassthroughMode;
 138 enum _BMDDeckLinkCapturePassthroughMode {
 139     bmdDeckLinkCapturePassthroughModeDirect                      = 'pdir',
 140     bmdDeckLinkCapturePassthroughModeCleanSwitch                 = 'pcln'
 141 };
 142
 143 /* Enum BMDOutputFrameCompletionResult - Frame Completion Callback */
 144
 145 typedef uint32_t BMDOutputFrameCompletionResult;
 146 enum _BMDOutputFrameCompletionResult {
 147     bmdOutputFrameCompleted,
 148     bmdOutputFrameDisplayedLate,
 149     bmdOutputFrameDropped,
 150     bmdOutputFrameFlushed
 151 };
 152
 153 /* Enum BMDReferenceStatus - GenLock input status */
 154
 155 typedef uint32_t BMDReferenceStatus;
 156 enum _BMDReferenceStatus {
 157     bmdReferenceNotSupportedByHardware                           = 1 << 0,
 158     bmdReferenceLocked                                           = 1 << 1
 159 };
 160
 161 /* Enum BMDAudioSampleRate - Audio sample rates supported for output/input */
 162
 163 typedef uint32_t BMDAudioSampleRate;
 164 enum _BMDAudioSampleRate {
 165     bmdAudioSampleRate48kHz                                      = 48000
 166 };
 167
 168 /* Enum BMDAudioSampleType - Audio sample sizes supported for output/input */
 169
 170 typedef uint32_t BMDAudioSampleType;
 171 enum _BMDAudioSampleType {
 172     bmdAudioSampleType16bitInteger                               = 16,
 173     bmdAudioSampleType32bitInteger                               = 32
 174 };
 175
 176 /* Enum BMDAudioOutputStreamType - Audio output stream type */
 177
 178 typedef uint32_t BMDAudioOutputStreamType;
 179 enum _BMDAudioOutputStreamType {
 180     bmdAudioOutputStreamContinuous,
 181     bmdAudioOutputStreamContinuousDontResample,
 182     bmdAudioOutputStreamTimestamped
 183 };
 184
 185 /* Enum BMDDisplayModeSupport - Output mode supported flags */
 186
 187 typedef uint32_t BMDDisplayModeSupport;
 188 enum _BMDDisplayModeSupport {
 189     bmdDisplayModeNotSupported                                   = 0,
 190     bmdDisplayModeSupported,
 191     bmdDisplayModeSupportedWithConversion
 192 };
 193
 194 /* Enum BMDTimecodeFormat - Timecode formats for frame metadata */
 195
 196 typedef uint32_t BMDTimecodeFormat;
 197 enum _BMDTimecodeFormat {
 198     bmdTimecodeRP188VITC1                                        = 'rpv1',      // RP188 timecode where DBB1 equals VITC1 (line 9)
 199     bmdTimecodeRP188VITC2                                        = 'rp12',      // RP188 timecode where DBB1 equals VITC2 (line 571)
 200     bmdTimecodeRP188LTC                                          = 'rplt',      // RP188 timecode where DBB1 equals LTC (line 10)
 201     bmdTimecodeRP188Any                                          = 'rp18',      // For capture: return the first valid timecode in {VITC1, LTC ,VITC2} - For playback: set the timecode as VITC1
 202     bmdTimecodeVITC                                              = 'vitc',
 203     bmdTimecodeVITCField2                                        = 'vit2',
 204     bmdTimecodeSerial                                            = 'seri'
 205 };
 206
 207 /* Enum BMDAnalogVideoFlags - Analog video display flags */
 208
 209 typedef uint32_t BMDAnalogVideoFlags;
 210 enum _BMDAnalogVideoFlags {
 211     bmdAnalogVideoFlagCompositeSetup75                           = 1 << 0,
 212     bmdAnalogVideoFlagComponentBetacamLevels                     = 1 << 1
 213 };
 214
 215 /* Enum BMDAudioConnection - Audio connection types */
 216
 217 typedef uint32_t BMDAudioConnection;
 218 enum _BMDAudioConnection {
 219     bmdAudioConnectionEmbedded                                   = 'embd',
 220     bmdAudioConnectionAESEBU                                     = 'aes ',
 221     bmdAudioConnectionAnalog                                     = 'anlg',
 222     bmdAudioConnectionAnalogXLR                                  = 'axlr',
 223     bmdAudioConnectionAnalogRCA                                  = 'arca'
 224 };
 225
 226 /* Enum BMDAudioOutputAnalogAESSwitch - Audio output Analog/AESEBU switch */
 227
 228 typedef uint32_t BMDAudioOutputAnalogAESSwitch;
 229 enum _BMDAudioOutputAnalogAESSwitch {
 230     bmdAudioOutputSwitchAESEBU                                   = 'aes ',
 231     bmdAudioOutputSwitchAnalog                                   = 'anlg'
 232 };
 233
 234 /* Enum BMDVideoOutputConversionMode - Video/audio conversion mode */
 235
 236 typedef uint32_t BMDVideoOutputConversionMode;
 237 enum _BMDVideoOutputConversionMode {
 238     bmdNoVideoOutputConversion                                   = 'none',
 239     bmdVideoOutputLetterboxDownconversion                        = 'ltbx',
 240     bmdVideoOutputAnamorphicDownconversion                       = 'amph',
 241     bmdVideoOutputHD720toHD1080Conversion                        = '720c',
 242     bmdVideoOutputHardwareLetterboxDownconversion                = 'HWlb',
 243     bmdVideoOutputHardwareAnamorphicDownconversion               = 'HWam',
 244     bmdVideoOutputHardwareCenterCutDownconversion                = 'HWcc',
 245     bmdVideoOutputHardware720p1080pCrossconversion               = 'xcap',
 246     bmdVideoOutputHardwareAnamorphic720pUpconversion             = 'ua7p',
 247     bmdVideoOutputHardwareAnamorphic1080iUpconversion            = 'ua1i',
 248     bmdVideoOutputHardwareAnamorphic149To720pUpconversion        = 'u47p',
 249     bmdVideoOutputHardwareAnamorphic149To1080iUpconversion       = 'u41i',
 250     bmdVideoOutputHardwarePillarbox720pUpconversion              = 'up7p',
 251     bmdVideoOutputHardwarePillarbox1080iUpconversion             = 'up1i'
 252 };
 253
 254 /* Enum BMDVideoInputConversionMode - Video input conversion mode */
 255
 256 typedef uint32_t BMDVideoInputConversionMode;
 257 enum _BMDVideoInputConversionMode {
 258     bmdNoVideoInputConversion                                    = 'none',
 259     bmdVideoInputLetterboxDownconversionFromHD1080               = '10lb',
 260     bmdVideoInputAnamorphicDownconversionFromHD1080              = '10am',
 261     bmdVideoInputLetterboxDownconversionFromHD720                = '72lb',
 262     bmdVideoInputAnamorphicDownconversionFromHD720               = '72am',
 263     bmdVideoInputLetterboxUpconversion                           = 'lbup',
 264     bmdVideoInputAnamorphicUpconversion                          = 'amup'
 265 };
 266
 267 /* Enum BMDVideo3DPackingFormat - Video 3D packing format */
 268
 269 typedef uint32_t BMDVideo3DPackingFormat;
 270 enum _BMDVideo3DPackingFormat {
 271     bmdVideo3DPackingSidebySideHalf                              = 'sbsh',
 272     bmdVideo3DPackingLinebyLine                                  = 'lbyl',
 273     bmdVideo3DPackingTopAndBottom                                = 'tabo',
 274     bmdVideo3DPackingFramePacking                                = 'frpk',
 275     bmdVideo3DPackingLeftOnly                                    = 'left',
 276     bmdVideo3DPackingRightOnly                                   = 'righ'
 277 };
 278
 279 /* Enum BMDIdleVideoOutputOperation - Video output operation when not playing video */
 280
 281 typedef uint32_t BMDIdleVideoOutputOperation;
 282 enum _BMDIdleVideoOutputOperation {
 283     bmdIdleVideoOutputBlack                                      = 'blac',
 284     bmdIdleVideoOutputLastFrame                                  = 'lafa',
 285     bmdIdleVideoOutputDesktop                                    = 'desk'
 286 };
 287
 288 /* Enum BMDDeckLinkAttributeID - DeckLink Attribute ID */
 289
 290 typedef uint32_t BMDDeckLinkAttributeID;
 291 enum _BMDDeckLinkAttributeID {
 292
 293     /* Flags */
 294
 295     BMDDeckLinkSupportsInternalKeying                            = 'keyi',
 296     BMDDeckLinkSupportsExternalKeying                            = 'keye',
 297     BMDDeckLinkSupportsHDKeying                                  = 'keyh',
 298     BMDDeckLinkSupportsInputFormatDetection                      = 'infd',
 299     BMDDeckLinkHasReferenceInput                                 = 'hrin',
 300     BMDDeckLinkHasSerialPort                                     = 'hspt',
 301     BMDDeckLinkHasAnalogVideoOutputGain                          = 'avog',
 302     BMDDeckLinkCanOnlyAdjustOverallVideoOutputGain               = 'ovog',
 303     BMDDeckLinkHasVideoInputAntiAliasingFilter                   = 'aafl',
 304     BMDDeckLinkHasBypass                                         = 'byps',
 305     BMDDeckLinkSupportsDesktopDisplay                            = 'extd',
 306     BMDDeckLinkSupportsClockTimingAdjustment                     = 'ctad',
 307     BMDDeckLinkSupportsFullDuplex                                = 'fdup',
 308     BMDDeckLinkSupportsFullFrameReferenceInputTimingOffset       = 'frin',
 309
 310     /* Integers */
 311
 312     BMDDeckLinkMaximumAudioChannels                              = 'mach',
 313     BMDDeckLinkNumberOfSubDevices                                = 'nsbd',
 314     BMDDeckLinkSubDeviceIndex                                    = 'subi',
 315     BMDDeckLinkPersistentID                                      = 'peid',
 316     BMDDeckLinkTopologicalID                                     = 'toid',
 317     BMDDeckLinkVideoOutputConnections                            = 'vocn',
 318     BMDDeckLinkVideoInputConnections                             = 'vicn',
 319     BMDDeckLinkDeviceBusyState                                   = 'dbst',
 320     BMDDeckLinkVideoIOSupport                                    = 'vios',      // Returns a BMDVideoIOSupport bit field
 321
 322     /* Floats */
 323
 324     BMDDeckLinkVideoInputGainMinimum                             = 'vigm',
 325     BMDDeckLinkVideoInputGainMaximum                             = 'vigx',
 326     BMDDeckLinkVideoOutputGainMinimum                            = 'vogm',
 327     BMDDeckLinkVideoOutputGainMaximum                            = 'vogx',
 328
 329     /* Strings */
 330
 331     BMDDeckLinkSerialPortDeviceName                              = 'slpn'
 332 };
 333
 334 /* Enum BMDDeckLinkAPIInformationID - DeckLinkAPI information ID */
 335
 336 typedef uint32_t BMDDeckLinkAPIInformationID;
 337 enum _BMDDeckLinkAPIInformationID {
 338     BMDDeckLinkAPIVersion                                        = 'vers'
 339 };
 340
 341 /* Enum BMDDeviceBusyState - Current device busy state */
 342
 343 typedef uint32_t BMDDeviceBusyState;
 344 enum _BMDDeviceBusyState {
 345     bmdDeviceCaptureBusy                                         = 1 << 0,
 346     bmdDevicePlaybackBusy                                        = 1 << 1,
 347     bmdDeviceSerialPortBusy                                      = 1 << 2
 348 };
 349
 350 /* Enum BMDVideoIOSupport - Device video input/output support */
 351
 352 typedef uint32_t BMDVideoIOSupport;
 353 enum _BMDVideoIOSupport {
 354     bmdDeviceSupportsCapture                                     = 1 << 0,
 355     bmdDeviceSupportsPlayback                                    = 1 << 1
 356 };
 357
 358 /* Enum BMD3DPreviewFormat - Linked Frame preview format */
 359
 360 typedef uint32_t BMD3DPreviewFormat;
 361 enum _BMD3DPreviewFormat {
 362     bmd3DPreviewFormatDefault                                    = 'defa',
 363     bmd3DPreviewFormatLeftOnly                                   = 'left',
 364     bmd3DPreviewFormatRightOnly                                  = 'righ',
 365     bmd3DPreviewFormatSideBySide                                 = 'side',
 366     bmd3DPreviewFormatTopBottom                                  = 'topb'
 367 };
 368
 369 /* Enum BMDNotifications - Events that can be subscribed through IDeckLinkNotification */
 370
 371 typedef uint32_t BMDNotifications;
 372 enum _BMDNotifications {
 373     bmdPreferencesChanged                                        = 'pref'
 374 };
 375
 376 #if defined(__cplusplus)
 377
 378 // Forward Declarations
 379
 380 class IDeckLinkVideoOutputCallback;
 381 class IDeckLinkInputCallback;
 382 class IDeckLinkMemoryAllocator;
 383 class IDeckLinkAudioOutputCallback;
 384 class IDeckLinkIterator;
 385 class IDeckLinkAPIInformation;
 386 class IDeckLinkOutput;
 387 class IDeckLinkInput;
 388 class IDeckLinkVideoFrame;
 389 class IDeckLinkMutableVideoFrame;
 390 class IDeckLinkVideoFrame3DExtensions;
 391 class IDeckLinkVideoInputFrame;
 392 class IDeckLinkVideoFrameAncillary;
 393 class IDeckLinkAudioInputPacket;
 394 class IDeckLinkScreenPreviewCallback;
 395 class IDeckLinkCocoaScreenPreviewCallback;
 396 class IDeckLinkGLScreenPreviewHelper;
 397 class IDeckLinkNotificationCallback;
 398 class IDeckLinkNotification;
 399 class IDeckLinkAttributes;
 400 class IDeckLinkKeyer;
 401 class IDeckLinkVideoConversion;
 402 class IDeckLinkDeviceNotificationCallback;
 403 class IDeckLinkDiscovery;
 404
 405 /* Interface IDeckLinkVideoOutputCallback - Frame completion callback. */
 406
 407 class IDeckLinkVideoOutputCallback : public IUnknown
 408 {
 409 public:
 410     virtual HRESULT ScheduledFrameCompleted (/* in */ IDeckLinkVideoFrame *completedFrame, /* in */ BMDOutputFrameCompletionResult result) = 0;
 411     virtual HRESULT ScheduledPlaybackHasStopped (void) = 0;
 412
 413 protected:
 414     virtual ~IDeckLinkVideoOutputCallback () {}; // call Release method to drop reference count
 415 };
 416
 417 /* Interface IDeckLinkInputCallback - Frame arrival callback. */
 418
 419 class IDeckLinkInputCallback : public IUnknown
 420 {
 421 public:
 422     virtual HRESULT VideoInputFormatChanged (/* in */ BMDVideoInputFormatChangedEvents notificationEvents, /* in */ IDeckLinkDisplayMode *newDisplayMode, /* in */ BMDDetectedVideoInputFormatFlags detectedSignalFlags) = 0;
 423     virtual HRESULT VideoInputFrameArrived (/* in */ IDeckLinkVideoInputFrame* videoFrame, /* in */ IDeckLinkAudioInputPacket* audioPacket) = 0;
 424
 425 protected:
 426     virtual ~IDeckLinkInputCallback () {}; // call Release method to drop reference count
 427 };
 428
 429 /* Interface IDeckLinkMemoryAllocator - Memory allocator for video frames. */
 430
 431 class IDeckLinkMemoryAllocator : public IUnknown
 432 {
 433 public:
 434     virtual HRESULT AllocateBuffer (/* in */ uint32_t bufferSize, /* out */ void **allocatedBuffer) = 0;
 435     virtual HRESULT ReleaseBuffer (/* in */ void *buffer) = 0;
 436
 437     virtual HRESULT Commit (void) = 0;
 438     virtual HRESULT Decommit (void) = 0;
 439 };
 440
 441 /* Interface IDeckLinkAudioOutputCallback - Optional callback to allow audio samples to be pulled as required. */
 442
 443 class IDeckLinkAudioOutputCallback : public IUnknown
 444 {
 445 public:
 446     virtual HRESULT RenderAudioSamples (/* in */ bool preroll) = 0;
 447 };
 448
 449 /* Interface IDeckLinkIterator - enumerates installed DeckLink hardware */
 450
 451 class IDeckLinkIterator : public IUnknown
 452 {
 453 public:
 454     virtual HRESULT Next (/* out */ IDeckLink **deckLinkInstance) = 0;
 455 };
 456
 457 /* Interface IDeckLinkAPIInformation - DeckLinkAPI attribute interface */
 458
 459 class IDeckLinkAPIInformation : public IUnknown
 460 {
 461 public:
 462     virtual HRESULT GetFlag (/* in */ BMDDeckLinkAPIInformationID cfgID, /* out */ bool *value) = 0;
 463     virtual HRESULT GetInt (/* in */ BMDDeckLinkAPIInformationID cfgID, /* out */ int64_t *value) = 0;
 464     virtual HRESULT GetFloat (/* in */ BMDDeckLinkAPIInformationID cfgID, /* out */ double *value) = 0;
 465     virtual HRESULT GetString (/* in */ BMDDeckLinkAPIInformationID cfgID, /* out */ CFStringRef *value) = 0;
 466
 467 protected:
 468     virtual ~IDeckLinkAPIInformation () {}; // call Release method to drop reference count
 469 };
 470
 471 /* Interface IDeckLinkOutput - Created by QueryInterface from IDeckLink. */
 472
 473 class IDeckLinkOutput : public IUnknown
 474 {
 475 public:
 476     virtual HRESULT DoesSupportVideoMode (/* in */ BMDDisplayMode displayMode, /* in */ BMDPixelFormat pixelFormat, /* in */ BMDVideoOutputFlags flags, /* out */ BMDDisplayModeSupport *result, /* out */ IDeckLinkDisplayMode **resultDisplayMode) = 0;
 477     virtual HRESULT GetDisplayModeIterator (/* out */ IDeckLinkDisplayModeIterator **iterator) = 0;
 478
 479     virtual HRESULT SetScreenPreviewCallback (/* in */ IDeckLinkScreenPreviewCallback *previewCallback) = 0;
 480
 481     /* Video Output */
 482
 483     virtual HRESULT EnableVideoOutput (/* in */ BMDDisplayMode displayMode, /* in */ BMDVideoOutputFlags flags) = 0;
 484     virtual HRESULT DisableVideoOutput (void) = 0;
 485
 486     virtual HRESULT SetVideoOutputFrameMemoryAllocator (/* in */ IDeckLinkMemoryAllocator *theAllocator) = 0;
 487     virtual HRESULT CreateVideoFrame (/* in */ int32_t width, /* in */ int32_t height, /* in */ int32_t rowBytes, /* in */ BMDPixelFormat pixelFormat, /* in */ BMDFrameFlags flags, /* out */ IDeckLinkMutableVideoFrame **outFrame) = 0;
 488     virtual HRESULT CreateAncillaryData (/* in */ BMDPixelFormat pixelFormat, /* out */ IDeckLinkVideoFrameAncillary **outBuffer) = 0;
 489
 490     virtual HRESULT DisplayVideoFrameSync (/* in */ IDeckLinkVideoFrame *theFrame) = 0;
 491     virtual HRESULT ScheduleVideoFrame (/* in */ IDeckLinkVideoFrame *theFrame, /* in */ BMDTimeValue displayTime, /* in */ BMDTimeValue displayDuration, /* in */ BMDTimeScale timeScale) = 0;
 492     virtual HRESULT SetScheduledFrameCompletionCallback (/* in */ IDeckLinkVideoOutputCallback *theCallback) = 0;
 493     virtual HRESULT GetBufferedVideoFrameCount (/* out */ uint32_t *bufferedFrameCount) = 0;
 494
 495     /* Audio Output */
 496
 497     virtual HRESULT EnableAudioOutput (/* in */ BMDAudioSampleRate sampleRate, /* in */ BMDAudioSampleType sampleType, /* in */ uint32_t channelCount, /* in */ BMDAudioOutputStreamType streamType) = 0;
 498     virtual HRESULT DisableAudioOutput (void) = 0;
 499
 500     virtual HRESULT WriteAudioSamplesSync (/* in */ void *buffer, /* in */ uint32_t sampleFrameCount, /* out */ uint32_t *sampleFramesWritten) = 0;
 501
 502     virtual HRESULT BeginAudioPreroll (void) = 0;
 503     virtual HRESULT EndAudioPreroll (void) = 0;
 504     virtual HRESULT ScheduleAudioSamples (/* in */ void *buffer, /* in */ uint32_t sampleFrameCount, /* in */ BMDTimeValue streamTime, /* in */ BMDTimeScale timeScale, /* out */ uint32_t *sampleFramesWritten) = 0;
 505
 506     virtual HRESULT GetBufferedAudioSampleFrameCount (/* out */ uint32_t *bufferedSampleFrameCount) = 0;
 507     virtual HRESULT FlushBufferedAudioSamples (void) = 0;
 508
 509     virtual HRESULT SetAudioCallback (/* in */ IDeckLinkAudioOutputCallback *theCallback) = 0;
 510
 511     /* Output Control */
 512
 513     virtual HRESULT StartScheduledPlayback (/* in */ BMDTimeValue playbackStartTime, /* in */ BMDTimeScale timeScale, /* in */ double playbackSpeed) = 0;
 514     virtual HRESULT StopScheduledPlayback (/* in */ BMDTimeValue stopPlaybackAtTime, /* out */ BMDTimeValue *actualStopTime, /* in */ BMDTimeScale timeScale) = 0;
 515     virtual HRESULT IsScheduledPlaybackRunning (/* out */ bool *active) = 0;
 516     virtual HRESULT GetScheduledStreamTime (/* in */ BMDTimeScale desiredTimeScale, /* out */ BMDTimeValue *streamTime, /* out */ double *playbackSpeed) = 0;
 517     virtual HRESULT GetReferenceStatus (/* out */ BMDReferenceStatus *referenceStatus) = 0;
 518
 519     /* Hardware Timing */
 520
 521     virtual HRESULT GetHardwareReferenceClock (/* in */ BMDTimeScale desiredTimeScale, /* out */ BMDTimeValue *hardwareTime, /* out */ BMDTimeValue *timeInFrame, /* out */ BMDTimeValue *ticksPerFrame) = 0;
 522     virtual HRESULT GetFrameCompletionReferenceTimestamp (/* in */ IDeckLinkVideoFrame *theFrame, /* in */ BMDTimeScale desiredTimeScale, /* out */ BMDTimeValue *frameCompletionTimestamp) = 0;
 523
 524 protected:
 525     virtual ~IDeckLinkOutput () {}; // call Release method to drop reference count
 526 };
 527
 528 /* Interface IDeckLinkInput - Created by QueryInterface from IDeckLink. */
 529
 530 class IDeckLinkInput : public IUnknown
 531 {
 532 public:
 533     virtual HRESULT DoesSupportVideoMode (/* in */ BMDDisplayMode displayMode, /* in */ BMDPixelFormat pixelFormat, /* in */ BMDVideoInputFlags flags, /* out */ BMDDisplayModeSupport *result, /* out */ IDeckLinkDisplayMode **resultDisplayMode) = 0;
 534     virtual HRESULT GetDisplayModeIterator (/* out */ IDeckLinkDisplayModeIterator **iterator) = 0;
 535
 536     virtual HRESULT SetScreenPreviewCallback (/* in */ IDeckLinkScreenPreviewCallback *previewCallback) = 0;
 537
 538     /* Video Input */
 539
 540     virtual HRESULT EnableVideoInput (/* in */ BMDDisplayMode displayMode, /* in */ BMDPixelFormat pixelFormat, /* in */ BMDVideoInputFlags flags) = 0;
 541     virtual HRESULT DisableVideoInput (void) = 0;
 542     virtual HRESULT GetAvailableVideoFrameCount (/* out */ uint32_t *availableFrameCount) = 0;
 543     virtual HRESULT SetVideoInputFrameMemoryAllocator (/* in */ IDeckLinkMemoryAllocator *theAllocator) = 0;
 544
 545     /* Audio Input */
 546
 547     virtual HRESULT EnableAudioInput (/* in */ BMDAudioSampleRate sampleRate, /* in */ BMDAudioSampleType sampleType, /* in */ uint32_t channelCount) = 0;
 548     virtual HRESULT DisableAudioInput (void) = 0;
 549     virtual HRESULT GetAvailableAudioSampleFrameCount (/* out */ uint32_t *availableSampleFrameCount) = 0;
 550
 551     /* Input Control */
 552
 553     virtual HRESULT StartStreams (void) = 0;
 554     virtual HRESULT StopStreams (void) = 0;
 555     virtual HRESULT PauseStreams (void) = 0;
 556     virtual HRESULT FlushStreams (void) = 0;
 557     virtual HRESULT SetCallback (/* in */ IDeckLinkInputCallback *theCallback) = 0;
 558
 559     /* Hardware Timing */
 560
 561     virtual HRESULT GetHardwareReferenceClock (/* in */ BMDTimeScale desiredTimeScale, /* out */ BMDTimeValue *hardwareTime, /* out */ BMDTimeValue *timeInFrame, /* out */ BMDTimeValue *ticksPerFrame) = 0;
 562
 563 protected:
 564     virtual ~IDeckLinkInput () {}; // call Release method to drop reference count
 565 };
 566
 567 /* Interface IDeckLinkVideoFrame - Interface to encapsulate a video frame; can be caller-implemented. */
 568
 569 class IDeckLinkVideoFrame : public IUnknown
 570 {
 571 public:
 572     virtual long GetWidth (void) = 0;
 573     virtual long GetHeight (void) = 0;
 574     virtual long GetRowBytes (void) = 0;
 575     virtual BMDPixelFormat GetPixelFormat (void) = 0;
 576     virtual BMDFrameFlags GetFlags (void) = 0;
 577     virtual HRESULT GetBytes (/* out */ void **buffer) = 0;
 578
 579     virtual HRESULT GetTimecode (/* in */ BMDTimecodeFormat format, /* out */ IDeckLinkTimecode **timecode) = 0;
 580     virtual HRESULT GetAncillaryData (/* out */ IDeckLinkVideoFrameAncillary **ancillary) = 0;
 581
 582 protected:
 583     virtual ~IDeckLinkVideoFrame () {}; // call Release method to drop reference count
 584 };
 585
 586 /* Interface IDeckLinkMutableVideoFrame - Created by IDeckLinkOutput::CreateVideoFrame. */
 587
 588 class IDeckLinkMutableVideoFrame : public IDeckLinkVideoFrame
 589 {
 590 public:
 591     virtual HRESULT SetFlags (/* in */ BMDFrameFlags newFlags) = 0;
 592
 593     virtual HRESULT SetTimecode (/* in */ BMDTimecodeFormat format, /* in */ IDeckLinkTimecode *timecode) = 0;
 594     virtual HRESULT SetTimecodeFromComponents (/* in */ BMDTimecodeFormat format, /* in */ uint8_t hours, /* in */ uint8_t minutes, /* in */ uint8_t seconds, /* in */ uint8_t frames, /* in */ BMDTimecodeFlags flags) = 0;
 595     virtual HRESULT SetAncillaryData (/* in */ IDeckLinkVideoFrameAncillary *ancillary) = 0;
 596     virtual HRESULT SetTimecodeUserBits (/* in */ BMDTimecodeFormat format, /* in */ BMDTimecodeUserBits userBits) = 0;
 597
 598 protected:
 599     virtual ~IDeckLinkMutableVideoFrame () {}; // call Release method to drop reference count
 600 };
 601
 602 /* Interface IDeckLinkVideoFrame3DExtensions - Optional interface implemented on IDeckLinkVideoFrame to support 3D frames */
 603
 604 class IDeckLinkVideoFrame3DExtensions : public IUnknown
 605 {
 606 public:
 607     virtual BMDVideo3DPackingFormat Get3DPackingFormat (void) = 0;
 608     virtual HRESULT GetFrameForRightEye (/* out */ IDeckLinkVideoFrame* *rightEyeFrame) = 0;
 609
 610 protected:
 611     virtual ~IDeckLinkVideoFrame3DExtensions () {}; // call Release method to drop reference count
 612 };
 613
 614 /* Interface IDeckLinkVideoInputFrame - Provided by the IDeckLinkVideoInput frame arrival callback. */
 615
 616 class IDeckLinkVideoInputFrame : public IDeckLinkVideoFrame
 617 {
 618 public:
 619     virtual HRESULT GetStreamTime (/* out */ BMDTimeValue *frameTime, /* out */ BMDTimeValue *frameDuration, /* in */ BMDTimeScale timeScale) = 0;
 620     virtual HRESULT GetHardwareReferenceTimestamp (/* in */ BMDTimeScale timeScale, /* out */ BMDTimeValue *frameTime, /* out */ BMDTimeValue *frameDuration) = 0;
 621
 622 protected:
 623     virtual ~IDeckLinkVideoInputFrame () {}; // call Release method to drop reference count
 624 };
 625
 626 /* Interface IDeckLinkVideoFrameAncillary - Obtained through QueryInterface() on an IDeckLinkVideoFrame object. */
 627
 628 class IDeckLinkVideoFrameAncillary : public IUnknown
 629 {
 630 public:
 631
 632     virtual HRESULT GetBufferForVerticalBlankingLine (/* in */ uint32_t lineNumber, /* out */ void **buffer) = 0;
 633     virtual BMDPixelFormat GetPixelFormat (void) = 0;
 634     virtual BMDDisplayMode GetDisplayMode (void) = 0;
 635
 636 protected:
 637     virtual ~IDeckLinkVideoFrameAncillary () {}; // call Release method to drop reference count
 638 };
 639
 640 /* Interface IDeckLinkAudioInputPacket - Provided by the IDeckLinkInput callback. */
 641
 642 class IDeckLinkAudioInputPacket : public IUnknown
 643 {
 644 public:
 645     virtual long GetSampleFrameCount (void) = 0;
 646     virtual HRESULT GetBytes (/* out */ void **buffer) = 0;
 647     virtual HRESULT GetPacketTime (/* out */ BMDTimeValue *packetTime, /* in */ BMDTimeScale timeScale) = 0;
 648
 649 protected:
 650     virtual ~IDeckLinkAudioInputPacket () {}; // call Release method to drop reference count
 651 };
 652
 653 /* Interface IDeckLinkScreenPreviewCallback - Screen preview callback */
 654
 655 class IDeckLinkScreenPreviewCallback : public IUnknown
 656 {
 657 public:
 658     virtual HRESULT DrawFrame (/* in */ IDeckLinkVideoFrame *theFrame) = 0;
 659
 660 protected:
 661     virtual ~IDeckLinkScreenPreviewCallback () {}; // call Release method to drop reference count
 662 };
 663
 664 /* Interface IDeckLinkCocoaScreenPreviewCallback - Screen preview callback for Cocoa-based applications */
 665
 666 class IDeckLinkCocoaScreenPreviewCallback : public IDeckLinkScreenPreviewCallback
 667 {
 668 public:
 669
 670 protected:
 671     virtual ~IDeckLinkCocoaScreenPreviewCallback () {}; // call Release method to drop reference count
 672 };
 673
 674 /* Interface IDeckLinkGLScreenPreviewHelper - Created with CoCreateInstance(). */
 675
 676 class IDeckLinkGLScreenPreviewHelper : public IUnknown
 677 {
 678 public:
 679
 680     /* Methods must be called with OpenGL context set */
 681
 682     virtual HRESULT InitializeGL (void) = 0;
 683     virtual HRESULT PaintGL (void) = 0;
 684     virtual HRESULT SetFrame (/* in */ IDeckLinkVideoFrame *theFrame) = 0;
 685     virtual HRESULT Set3DPreviewFormat (/* in */ BMD3DPreviewFormat previewFormat) = 0;
 686
 687 protected:
 688     virtual ~IDeckLinkGLScreenPreviewHelper () {}; // call Release method to drop reference count
 689 };
 690
 691 /* Interface IDeckLinkNotificationCallback - DeckLink Notification Callback Interface */
 692
 693 class IDeckLinkNotificationCallback : public IUnknown
 694 {
 695 public:
 696     virtual HRESULT Notify (/* in */ BMDNotifications topic, /* in */ uint64_t param1, /* in */ uint64_t param2) = 0;
 697 };
 698
 699 /* Interface IDeckLinkNotification - DeckLink Notification interface */
 700
 701 class IDeckLinkNotification : public IUnknown
 702 {
 703 public:
 704     virtual HRESULT Subscribe (/* in */ BMDNotifications topic, /* in */ IDeckLinkNotificationCallback *theCallback) = 0;
 705     virtual HRESULT Unsubscribe (/* in */ BMDNotifications topic, /* in */ IDeckLinkNotificationCallback *theCallback) = 0;
 706 };
 707
 708 /* Interface IDeckLinkAttributes - DeckLink Attribute interface */
 709
 710 class IDeckLinkAttributes : public IUnknown
 711 {
 712 public:
 713     virtual HRESULT GetFlag (/* in */ BMDDeckLinkAttributeID cfgID, /* out */ bool *value) = 0;
 714     virtual HRESULT GetInt (/* in */ BMDDeckLinkAttributeID cfgID, /* out */ int64_t *value) = 0;
 715     virtual HRESULT GetFloat (/* in */ BMDDeckLinkAttributeID cfgID, /* out */ double *value) = 0;
 716     virtual HRESULT GetString (/* in */ BMDDeckLinkAttributeID cfgID, /* out */ CFStringRef *value) = 0;
 717
 718 protected:
 719     virtual ~IDeckLinkAttributes () {}; // call Release method to drop reference count
 720 };
 721
 722 /* Interface IDeckLinkKeyer - DeckLink Keyer interface */
 723
 724 class IDeckLinkKeyer : public IUnknown
 725 {
 726 public:
 727     virtual HRESULT Enable (/* in */ bool isExternal) = 0;
 728     virtual HRESULT SetLevel (/* in */ uint8_t level) = 0;
 729     virtual HRESULT RampUp (/* in */ uint32_t numberOfFrames) = 0;
 730     virtual HRESULT RampDown (/* in */ uint32_t numberOfFrames) = 0;
 731     virtual HRESULT Disable (void) = 0;
 732
 733 protected:
 734     virtual ~IDeckLinkKeyer () {}; // call Release method to drop reference count
 735 };
 736
 737 /* Interface IDeckLinkVideoConversion - Created with CoCreateInstance(). */
 738
 739 class IDeckLinkVideoConversion : public IUnknown
 740 {
 741 public:
 742     virtual HRESULT ConvertFrame (/* in */ IDeckLinkVideoFrame* srcFrame, /* in */ IDeckLinkVideoFrame* dstFrame) = 0;
 743
 744 protected:
 745     virtual ~IDeckLinkVideoConversion () {}; // call Release method to drop reference count
 746 };
 747
 748 /* Interface IDeckLinkDeviceNotificationCallback - DeckLink device arrival/removal notification callbacks */
 749
 750 class IDeckLinkDeviceNotificationCallback : public IUnknown
 751 {
 752 public:
 753     virtual HRESULT DeckLinkDeviceArrived (/* in */ IDeckLink* deckLinkDevice) = 0;
 754     virtual HRESULT DeckLinkDeviceRemoved (/* in */ IDeckLink* deckLinkDevice) = 0;
 755
 756 protected:
 757     virtual ~IDeckLinkDeviceNotificationCallback () {}; // call Release method to drop reference count
 758 };
 759
 760 /* Interface IDeckLinkDiscovery - DeckLink device discovery */
 761
 762 class IDeckLinkDiscovery : public IUnknown
 763 {
 764 public:
 765     virtual HRESULT InstallDeviceNotifications (/* in */ IDeckLinkDeviceNotificationCallback* deviceNotificationCallback) = 0;
 766     virtual HRESULT UninstallDeviceNotifications (void) = 0;
 767
 768 protected:
 769     virtual ~IDeckLinkDiscovery () {}; // call Release method to drop reference count
 770 };
 771
 772 /* Functions */
 773
 774 extern "C" {
 775
 776     IDeckLinkIterator* CreateDeckLinkIteratorInstance (void);
 777     IDeckLinkDiscovery* CreateDeckLinkDiscoveryInstance (void);
 778     IDeckLinkAPIInformation* CreateDeckLinkAPIInformationInstance (void);
 779     IDeckLinkGLScreenPreviewHelper* CreateOpenGLScreenPreviewHelper (void);
 780     IDeckLinkCocoaScreenPreviewCallback* CreateCocoaScreenPreview (void* /* (NSView*) */ parentView);
 781     IDeckLinkVideoConversion* CreateVideoConversionInstance (void);
 782
 783 };
 784
 785
 786 #endif      // defined(__cplusplus)
 787 #endif /* defined(BMD_DECKLINKAPI_H) */