Takashi Iwai wrote: > BTW, this reminds me of an open question: > is it useful to add SND_CHMAP_MONO, or is it just redundant? > > It's nothing but indicating a mono channel without any channel > position, so I supposed SND_CHMAP_UNKNOWN being sufficient. OTOH, > SND_CHMAP_MONO would give a clear sign of mono streams while > SND_CHMAP_UNKNOWN could be used for any other exceptional purposes. What would it be used for? Labeling surround channels is necessary for reordering them or for doing up/downmixing. A "mono" channel, however, does not appear to have any semantic difference from a single "unknown" channel. Regards, Clemens
