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IImageDecoder::Decode (Windows CE 5.0)

Windows CE 5.0
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This method tells the decoder object to continue decoding the current frame.

HRESULT Decode();

Parameters

None.

Return Values

If successful, this method returns S_OK.

If it fails, this method should return one of the following error values:

  • IMGERR_OBJECTBUS
  • E_FAIL

For more information, see Error Codes for the Imaging API.

Remarks

A nonblocking decoder should return E_PENDING when it runs out of input data.

To identify a blocking decoder, see if it has the ImageCodecFlagsBlockingDecode flag set. For more information, see ImageCodecFlags.

The following code shows how an application might decode an image frame.

IImageDecoder* decoder;
IImageSink* sink;
HRESULT hr;

hr = decoder->BeginDecode(sink, NULL);
if (FAILED(hr))
{ 
  // handle error;
}

for (;;)
{
    hr = decoder->Decode();
    if (hr == E_PENDING)
        // do something else;
    else if (FAILED(hr))
        // handle error, break;
    else
        // decoding successful, break;
}
decoder->EndDecode(hr);

Requirements

OS Versions: Windows CE 5.0 and later.
Header: Imaging.h.
Link Library: Imaging.lib.

See Also

IImageDecoder | ImageCodecFlags


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