Obviously no one wants to discuss this any more. I think we're pretty close to an A or B or nothing at all decision. Should we debate merits again, or who is willing to bend? I'm willing to bend to the group will. I'll be happy with some form of C, or A. my position: Option C + flexible - complex + any plugin can reuse as many buffers as possible Option A: + simple + well understood - some plugins can't use it a) Yes. A plugin-global flag indicates a plugins ability to do this. This tells the host that ANY input buffer may be re-used on ANY output (perhaps withing some higher-level grouping of stuff (think MIDI channel?)). If a plug can not accept this rule, it must not use in-place processing. (VST model?) c) Yes. A plugin is given inputs and produces it's own output buffers based on internal knowledge or other variables. The host is not involved, except to furnish new buffers as requested. The plugin must re-use or release all input buffers. Variations on this can be devised to allowed shared input/outputs. (baton passing, or similar to DX model) ---------------------------------------------------------------------- Generalized Music Plugin Interface (GMPI) public discussion list Participation in this list is contingent upon your abiding by the following rules: Please stay on topic. You are responsible for your own words. Please respect your fellow subscribers. Please do not redistribute anyone else's words without their permission. Archive: //www.freelists.org/archives/gmpi Email gmpi-request@xxxxxxxxxxxxx w/ subject "unsubscribe" to unsubscribe