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[icecbr]

Hi all,

I use c# and bass.net

I try to make a small multi zone player, I ve discovered that I can successfully play mp3 files, which are common and stereo, to Mono (only) Left speaker and another mp3 to Mono right speaker using the flags:

....BASSFlag.BASS_SPEAKER_FRONTLEFT | BASSFlag.BASS_SAMPLE_MONO

but when I try to create a new stream from ogg (common stereo) file I get:
BASS_ERROR_SPEAKER

am I missing something? is there any way to successfully do this?

[Ian @ un4seen]

Unlike the MP3 decoder, the OGG decoder doesn't support the BASS_SAMPLE_MONO flag. So the problem there is that you end up trying to assign a stereo stream to a mono speaker, resulting in BASS_ERROR_SPEAKER. To convert any stereo stream to mono, you could use the BASSmix add-on. Something like this...

HSTREAM decoder=BASS_StreamCreateFile(FALSE, filename, 0, 0, BASS_STREAM_DECODE); // create a decoder for the file
BASS_CHANNELINFO ci;
BASS_ChannelGetInfo(decoder, &ci); // get the format info
downmix=BASS_Mixer_StreamCreate(ci.freq, 1, BASS_SPEAKER_FRONTLEFT); // create mono mixer with same sample rate on front-left speaker
BASS_Mixer_StreamAddChannel(downmix, decoder, BASS_MIXER_DOWNMIX); // add the decoder to the mixer with downmixing enabled
BASS_ChannelPlay(downmix, FALSE); // start playing

[icecbr]

Thank you very much Ian, I converted to c# and successfully no errors and sound ok.