simplify "can-replicate" to allow replication only if a plugin has zero or one input AND output for each data type
git-svn-id: svn://localhost/ardour2/branches/3.0@8742 d708f5d6-7413-0410-9779-e7cbd77b26cf
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@ -619,35 +619,20 @@ PluginInsert::can_support_io_configuration (const ChanCount& in, ChanCount& out)
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}
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// See if replication is possible
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// We can replicate if there exists a single factor f such that, for every type,
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// the number of plugin inputs * f = the requested number of inputs
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uint32_t f = 0;
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// We allow replication only for plugins with either zero or 1 inputs and outputs
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// for every valid data type.
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uint32_t f = 1;
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bool can_replicate = true;
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for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
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// No inputs of this type
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if (inputs.get(*t) == 0 && in.get(*t) == 0) {
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continue;
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}
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// Plugin has more inputs than requested, can not replicate
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} else if (inputs.get(*t) >= in.get(*t)) {
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can_replicate = false;
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break;
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// Plugin inputs is not a factor of requested inputs, can not replicate
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} else if (inputs.get(*t) == 0 || in.get(*t) % inputs.get(*t) != 0) {
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can_replicate = false;
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break;
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// Potential factor not set yet
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} else if (f == 0) {
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f = in.get(*t) / inputs.get(*t);;
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}
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// Factor for this type does not match another type, can not replicate
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if (f != (in.get(*t) / inputs.get(*t))) {
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can_replicate = false;
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break;
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}
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if (inputs.get(*t) != 1 || outputs.get (*t) != 1) {
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can_replicate = false;
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break;
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}
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}
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if (can_replicate) {
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