IWMCodecInfo::GetCodecFormatCount method (wmsdkidl.h)
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The GetCodecFormatCount method retrieves the number of formats supported by the specified codec. Each codec format is a stream configuration that is valid for use with the codec.
Syntax
HRESULT GetCodecFormatCount(
[in] REFGUID guidType,
[in] DWORD dwCodecIndex,
[out] DWORD *pcFormat
);
Parameters
[in] guidType
GUID identifying the major type of digital media. This must be one of the following constants.
| Constant | Description |
|---|---|
| WMMEDIATYPE_Video | Specifies a video codec. |
| WMMEDIATYPE_Audio | Specifies an audio codec. |
[in] dwCodecIndex
DWORD containing the codec index ranging from zero to one less than the number of supported codecs of the type specified by guidType. To retrieve the number of individual codecs supporting a major media type, use the IWMCodecInfo::GetCodecInfoCount method.
[out] pcFormat
Pointer to a count of the formats supported by the codec.
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
|
pcFormat has been passed a null value. |
|
Other unspecified failure. |
Remarks
Use this method along with GetCodecFormat to enumerate the formats supported by the codec.
The Windows Media Format SDK provides codecs only for audio and video. If you specify another major type, this method will return an error.
You do not need to call this method for the Windows Media Video codecs; each video codec supports only a single format. For more information see Configuring Video Streams.
Requirements
| Minimum supported client | Windows 2000 Professional [desktop apps only],Windows Media Format 7 SDK, or later versions of the SDK |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | wmsdkidl.h (include Wmsdk.h) |
| Library | Wmvcore.lib; WMStubDRM.lib (if you use DRM) |