diff options
| -rw-r--r-- | libs/ardour/luaproc.cc | 86 |
1 files changed, 22 insertions, 64 deletions
diff --git a/libs/ardour/luaproc.cc b/libs/ardour/luaproc.cc index 0c5581e2a0..cfe6682067 100644 --- a/libs/ardour/luaproc.cc +++ b/libs/ardour/luaproc.cc @@ -444,12 +444,9 @@ LuaProc::can_support_io_configuration (const ChanCount& in, ChanCount& out, Chan if (possible_in == 0) { /* no inputs, generators & instruments */ - if (possible_out == -1) { - /* any configuration possible, stereo output */ - FOUNDCFG (preferred_out); - ANYTHINGGOES; - } else if (possible_out == -2) { - /* invalid, should be (0, -1) */ + if (possible_out == -1 || possible_out == -2) { + /* any output configuration possible + * out == -2 is invalid, interpreted as out == -1 */ FOUNDCFG (preferred_out); ANYTHINGGOES; } else if (possible_out < -2) { @@ -462,39 +459,20 @@ LuaProc::can_support_io_configuration (const ChanCount& in, ChanCount& out, Chan } } - if (possible_in == -1) { + if (possible_in == -1 || possible_in == -2) { /* wildcard for input */ - if (possible_out == -1) { - /* out must match in */ + if (possible_out == possible_in) { + /* either both -1 or both -2 (invalid and + * interpreted as both -1): out must match in */ FOUNDCFG (audio_in); - } else if (possible_out == -2) { - /* any configuration possible, pick matching */ - FOUNDCFG (preferred_out); - ANYTHINGGOES; - } else if (possible_out < -2) { - /* explicitly variable number of outputs, pick maximum */ - FOUNDCFG (max (-possible_out, preferred_out)); - /* and try min, too, in case the penalty is lower */ - FOUNDCFG (min (-possible_out, preferred_out)); - UPTO (-possible_out) - } else { - /* exact number of outputs */ - FOUNDCFG (possible_out); - } - } - - if (possible_in == -2) { - if (possible_out == -1) { - /* any configuration possible, pick matching */ - FOUNDCFG (preferred_out); - ANYTHINGGOES; - } else if (possible_out == -2) { - /* invalid. interpret as (-1, -1) */ + } else if (possible_out == -3 - possible_in) { + /* one is -1, the other is -2: any output configuration + * possible, pick what the insert prefers */ FOUNDCFG (preferred_out); ANYTHINGGOES; } else if (possible_out < -2) { - /* invalid, interpret as (<-2, <-2) - * variable number of outputs up to -N, */ + /* variable number of outputs up to -N, + * invalid if in == -2 but we accept it anyway */ FOUNDCFG (min (-possible_out, preferred_out)); UPTO (-possible_out) } else { @@ -503,20 +481,20 @@ LuaProc::can_support_io_configuration (const ChanCount& in, ChanCount& out, Chan } } - if (possible_in < -2) { - /* explicit variable number of inputs */ - if (audio_in > -possible_in && imprecise == NULL) { + if (possible_in < -2 || possible_in > 0) { + /* specified number, exact or up to */ + if (possible_in < -2 && audio_in > -possible_in && !imprecise) { /* request is too large */ - } else if (possible_out == -1) { - /* any output configuration possible */ - FOUNDCFG (preferred_out); - ANYTHINGGOES; - } else if (possible_out == -2) { - /* invalid. interpret as (<-2, -1) */ + } else if (possible_in > 0 && audio_in != possible_in) { + /* this configuration needed exacty possible_in inputs */ + } else if (possible_out == -1 || possible_out == -2) { + /* any output configuration possible + * out == -2 is invalid, interpreted as out == -1 */ FOUNDCFG (preferred_out); ANYTHINGGOES; } else if (possible_out < -2) { - /* variable number of outputs up to -N, */ + /* variable number of outputs up to -N + * not specified if in > 0, but we accept it anyway */ FOUNDCFG (min (-possible_out, preferred_out)); UPTO (-possible_out) } else { @@ -525,26 +503,6 @@ LuaProc::can_support_io_configuration (const ChanCount& in, ChanCount& out, Chan } } - if (possible_in && (possible_in == audio_in)) { - /* exact number of inputs ... must match obviously */ - if (possible_out == -1) { - /* any output configuration possible */ - FOUNDCFG (preferred_out); - ANYTHINGGOES; - } else if (possible_out == -2) { - /* invalid. interpret as (>0, -1) */ - FOUNDCFG (preferred_out); - ANYTHINGGOES; - } else if (possible_out < -2) { - /* > 0, < -2 is not specified - * interpret as up to -N */ - FOUNDCFG (min (-possible_out, preferred_out)); - UPTO (-possible_out) - } else { - /* exact number of outputs */ - FOUNDCFG (possible_out); - } - } } if (found && imprecise) { |