IMFSourceReader - Decode and Re-sample audio in C# -


i looking decode , re-sample audio file using imfsourcereader in c#.

for example:

i want decode (mp3 wav) , re-sample bit rate (64kbps 192kbps) of following audio file -

myaudiofile - 48khz - 64kbps.mp3

to -

myaudiofile - 48khz - 192kbps.wav

i trying decode mp3 wav specifying partial media settings in code below, not re-sampling decoded wav file:

var filestream = ((mediafoundationreaderrtsettings) settings).stream; var bytestream = mediafoundationapi.createbytestream(filestream); var reader =  mediafoundationapi.createsourcereaderfrombytestream(bytestream);        reader.setstreamselection(   mediafoundationinterop.mf_source_reader_all_streams, false); reader.setstreamselection(   mediafoundationinterop.mf_source_reader_first_audio_stream, true);  //create partial media type indicating want uncompressed pcm audio var partialmediatype = new mediatype(); partialmediatype.majortype = mediatypes.mfmediatype_audio; partialmediatype.subtype = settings.requestfloatoutput ?  audiosubtypes.mfaudioformat_float : audiosubtypes.mfaudioformat_pcm;  partialmediatype.samplerate = 48000; partialmediatype.bitspersample = 16; partialmediatype.channelcount = 2;  // set media type // can return mf_e_invalidmediatype if not supported reader.setcurrentmediatype(  mediafoundationinterop.mf_source_reader_first_audio_stream, intptr.zero,  partialmediatype.mediafoundationobject);  return reader;

appreciate on how go example. thanks!


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