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      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) */
    788