SDI Technologies iH30 Spezifikationen PDF herunterladen (Seite 41)

Ancillary Data

Quadro SDI Output PG-03776-001_v06 | 36

// UDWx+2:

// b9 - !b8 (Computed by HW)

// b8 - Even parity of b0-b7 (Computed by HW)

// b7 (b23) - aud 19

// b6 (b22) - aud 18

// b5 (b21) - aud 17

// b4 (b20) - aud 16

// b3 (b19) - aud 15

// b2 (b18) - aud 14

// b1 (b17) - aud 13

// b0 (b16) - aud 12

// UDWx+3:

// b9 - !b8 (Computed by HW)

// b8 - Even parity of b0-b7 (Computed by HW)

// b7 (b31) - P - Parity for bits 0-30 of sample

// b6 (b30) - C - Channel status bit.

// b5 (b29) - U - User bit.

// b4 (b28) - V - Sample validity bit.

// b3 (b27) - aud 23 (MSB)

// b2 (b26) - aud 22

// b1 (b25) - aud 21

// b0 (b24) - aud 20

// ^

// `- bit order in 'sample'

// Add subframe for first channel.

// XXX Since we use a 16 bit audio source here

// (input is NvU16), move the 16 bits into

// the upper part of the audio data 24 bits.

sample = ((C & 0x1) << 30) | // AES channel status (C) bit

((U & 0x1) << 29) | // AES user data (U) bit

((V & 0x1) << 28) | // AES sample validity (V) bit

((((NvU32)(*input)) & 0xffff) << 12); // AES sample data

// Add Z / block sync

if (curFrame == 0) {

sample |= (0x1 << 3);

}

// Compute and add parity

P = ComputeParity(sample);

sample |= (P & 0x1) << 31;

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 146 147

Keine Kommentare

SDI Technologies iH30 Spezifikationen Seite 41