Dmitry Sergeev
28 lines
802 B
Go
28 lines
802 B
Go
package generator
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import "encoding/binary"
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func sampleV210(buf []byte, width, x, y int) (yc, cb, cr uint32) {
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pixel := y*width + x
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offset := (pixel / 6) * 16
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w0 := binary.LittleEndian.Uint32(buf[offset:])
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w1 := binary.LittleEndian.Uint32(buf[offset+4:])
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w2 := binary.LittleEndian.Uint32(buf[offset+8:])
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w3 := binary.LittleEndian.Uint32(buf[offset+12:])
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switch pixel % 6 {
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case 0:
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return (w0 >> 10) & 0x3FF, w0 & 0x3FF, (w0 >> 20) & 0x3FF
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case 1:
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return w1 & 0x3FF, w0 & 0x3FF, (w0 >> 20) & 0x3FF
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case 2:
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return (w1 >> 20) & 0x3FF, (w1 >> 10) & 0x3FF, w2 & 0x3FF
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case 3:
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return (w2 >> 10) & 0x3FF, (w1 >> 10) & 0x3FF, w2 & 0x3FF
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case 4:
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return w3 & 0x3FF, (w2 >> 20) & 0x3FF, (w3 >> 10) & 0x3FF
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default:
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return (w3 >> 20) & 0x3FF, (w2 >> 20) & 0x3FF, (w3 >> 10) & 0x3FF
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}
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}
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