Optional aInstancePtr: objectA run time mechanism for interface discovery.
NS_OK if the interface is supported by the associated instance, NS_NOINTERFACE if it is not.
aInstancePtr must not be null.
[in] A requested interface IID
[out] A pointer to an interface pointer to receive the result.
ASYNCHRONOUS VERSION Retrieves a nsIStreamListener that receives the original/raw data via its nsIStreamListener::OnDataAvailable() callback, then converts and pushes the data to aListener.
Use this method when you want to proxy (and convert) nsIStreamListener callbacks asynchronously.
A nsIStreamListener that receives data via its OnDataAvailable() method.
The MIME type of the original/raw data.
The MIME type of the converted data.
The listener that receives the converted data.
Tests whether conversion between the two specified types is possible. This is cheaper than calling convert()/asyncConvertData(); it is not necessary to call this function before calling one of those, though.
SYNCHRONOUS VERSION Converts a stream of one type, to a stream of another type.
Use this method when you have a stream you want to convert.
The converted stream. NOTE: The returned stream may not already be converted. An efficient stream converter implementation will convert data on demand rather than buffering the converted data until it is used.
The stream representing the original/raw data.
The MIME type of aFromStream.
The MIME type of the returned stream.
Either an opaque context, or a converter specific context (implementation specific).
Returns the content type that will be returned from a converter created with aFromType and * . Can fail if no converters support this conversion, or if the output type isn't known in advance.
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The nsIStreamConverterService is a higher level stream converter factory responsible for locating and creating stream converters (nsIStreamConverter).
This service retrieves an interface that can convert data from a particular MIME type, to a particular MIME type. It is responsible for any intermediary conversion required in order to get from X to Z, assuming direct conversion is not possible.
Author
Jud Valeski
See
nsIStreamConverter