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MFVideoTransferFunction enumeration

Specifies the conversion function from linear RGB to non-linear RGB (R'G'B').

Syntax


typedef enum _MFVideoTransferFunction { 
  MFVideoTransFunc_Unknown     = 0,
  MFVideoTransFunc_10          = 1,
  MFVideoTransFunc_18          = 2,
  MFVideoTransFunc_20          = 3,
  MFVideoTransFunc_22          = 4,
  MFVideoTransFunc_709         = 5,
  MFVideoTransFunc_240M        = 6,
  MFVideoTransFunc_sRGB        = 7,
  MFVideoTransFunc_28          = 8,
  MFVideoTransFunc_Log_100     = 9,
  MFVideoTransFunc_Log_316     = 10,
  MFVideoTransFunc_709_sym     = 11,
  MFVideoTransFunc_Last,
  MFVideoTransFunc_ForceDWORD  = 0x7FFFFFFF
} MFVideoTransferFunction;

Constants

MFVideoTransFunc_Unknown

Unknown. Treat as MFVideoTransFunc_709.

MFVideoTransFunc_10

Linear RGB (gamma = 1.0).

MFVideoTransFunc_18

True 1.8 gamma, L' = L^1/1.8.

MFVideoTransFunc_20

True 2.0 gamma, L' = L^1/2.0.

MFVideoTransFunc_22

True 2.2 gamma, L' = L^1/2.2. This transfer function is used in ITU-R BT.470-2 System M (NTSC).

MFVideoTransFunc_709

ITU-R BT.709 transfer function. Gamma 2.2 curve with a linear segment in the lower range. This transfer function is used in BT.709, BT.601, SMPTE 296M, SMPTE 170M, BT.470, and SPMTE 274M. In addition BT-1361 uses this function within the range [0...1].

MFVideoTransFunc_240M

SPMTE 240M transfer function. Gamma 2.2 curve with a linear segment in the lower range.

MFVideoTransFunc_sRGB

sRGB transfer function. Gamma 2.4 curve with a linear segment in the lower range.

MFVideoTransFunc_28

True 2.8 gamma. L' = L^1/2.8. This transfer function is used in ITU-R BT.470-2 System B, G (PAL).

MFVideoTransFunc_Log_100

Logarithmic transfer (100:1 range); for example, as used in H.264 video.

Note  Requires Windows 7 or later.

MFVideoTransFunc_Log_316

Logarithmic transfer (316.22777:1 range); for example, as used in H.264 video.

Note  Requires Windows 7 or later.

MFVideoTransFunc_709_sym

Symmetric ITU-R BT.709.

Note  Requires Windows 7 or later.

MFVideoTransFunc_Last

Reserved.

MFVideoTransFunc_ForceDWORD

Reserved. This member forces the enumeration type to compile as a DWORD value.

Remarks

These flags are used with the MF_MT_TRANSFER_FUNCTION attribute.

For more information about these values, see the remarks for the DXVA2_VideoTransferFunction enumeration, which is the DirectX Video Acceleration (DXVA) equivalent of this enumeration.

Requirements

Minimum supported client

Windows Vista [desktop apps only]

Minimum supported server

Windows Server 2008 [desktop apps only]

Header

Mfobjects.h (include Mfidl.h)

See also

Media Foundation Enumerations
Video Media Types
Extended Color Information

 

 

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