SDI Technologies iH30 Spécifications télécharger pdf (Page 141)

Ancillary Data API

Quadro SDI Output PG-03776-001_v06 | 136

// Active channel definitions - from SMPTE 299M-2004 Table 9

typedef enum

{

NVVIOANCAUDIO_ACTIVE_CH1 = 0x1,

NVVIOANCAUDIO_ACTIVE_CH2 = 0x2,

NVVIOANCAUDIO_ACTIVE_CH3 = 0x4,

NVVIOANCAUDIO_ACTIVE_CH4 = 0x8

} NVVIOANCAUDIO_ACTIVE_CHANNEL;

//---------------------------------------------------------------------

// Structures

//---------------------------------------------------------------------

// Audio control

typedef struct tagNVVIOANCAUDIOCNTRL {

NvU32 version; // Structure version

NvU8 frameNumber1_2; // Frame number for channels 1 and 2

NvU8 frameNumber3_4; // Frame number for channels 3 and 4

NvU8 rate; // Audio sample rate

NvU8 asynchronous; // 0 = synchronous, 1 = asynchronous

NvU8 activeChannels; // Bitwise OR of active channel

definitions

} NVVIOANCAUDIOCNTRL;

#define NVVIOANCAUDIOCNTRL_VERSION

MAKE_NVAPI_VERSION(NVVIOANCAUDIOCNTRL, 1)

// Audio group

typedef struct tagNVVIOANCAUDIOGROUP {

NvU32 numAudioSamples; // Number of valid audio samples / channel

NvU32 *audioData[4]; // Data pointer for audio channels 1-4

NVVIOANCAUDIOCNTRL audioCntrl; // Controls for audio channels 1-4

} NVVIOANCAUDIOGROUP;

#define NVVIOANCAUDIOGROUP_VERSION

MAKE_NVAPI_VERSION(NVVIOANCAUDIOGROUP, 1)

// Per ANC Data Packet

typedef struct tagNVVIOANCDATAPACKET {

NvU32 version; // Structure version

NvU16 DID;

NvU16 SDID;

NvU16 DC;

NvU8 *data; // Should this be unsigned short?

NvU16 CS;

} NVVIOANCDATAPACKET;

#define NVVIOANCDATAPACKET_VERSION

MAKE_NVAPI_VERSION(NVVIOANCDATAPACKET, 1)

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