IDVRGB219::SetRGB219 method (strmif.h)

Article
02/22/2024

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The SetRGB219 method controls the dynamic range for DV encoding and decoding.

The DV video format has a dynamic range of 16–235. By default, when the DV Video Decoder decodes to 24-bit or 32-bit RGB, it stretches the color range to 0–255. Similarly, the DV Video Encoder compresses 24-bit RGB into the 16-235 range. In RGB-219 mode, the decoder does not stretch the color range, and the encoder does not compress the color range. Use the SetRGB219 method to toggle between the default mode and RGB-219 mode.

Syntax

HRESULT SetRGB219(
  [in] BOOL bState
);

Parameters

[in] bState

Boolean value that specifies the filter's encoding or decoder behavior.

Value	Description
TRUE	Enable RGB-219 mode.
FALSE	Disable RGB-219 mode. Use the default mode.

Return value

Returns S_OK if successful. Otherwise, returns an HRESULT failure code.

Remarks

For the encoder, this method has no effect unless the input type is RGB-24. For the decoder, it has no effect unless the output type is RGB-24 or RGB-32.

Requirements

Requirement	Value
Minimum supported client	Windows XP [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Target Platform	Windows
Header	strmif.h (include Dshow.h)
Library	Strmiids.lib