bool
AUPlugin::can_support_io_configuration (const ChanCount& in, ChanCount& out, ChanCount* imprecise)
{
- // Note: We never attempt to multiply-instantiate plugins to meet io configurations.
-
+ _output_configs.clear ();
const int32_t audio_in = in.n_audio();
int32_t audio_out;
AUPluginInfoPtr pinfo = boost::dynamic_pointer_cast<AUPluginInfo>(get_info());
name(), io_configs.size(), in, out));
// preferred setting (provided by plugin_insert)
+ const int preferred_out = out.n_audio ();
audio_out = out.n_audio ();
+ bool found = false;
+ bool exact_match = false;
/* kAudioUnitProperty_SupportedNumChannels
* https://developer.apple.com/library/mac/documentation/MusicAudio/Conceptual/AudioUnitProgrammingGuide/TheAudioUnit/TheAudioUnit.html#//apple_ref/doc/uid/TP40003278-CH12-SW20
int32_t possible_in = i->first;
int32_t possible_out = i->second;
- if ((possible_in == audio_in) && (possible_out == audio_out)) {
+ if ((possible_in == audio_in) && (possible_out == preferred_out)) {
DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("\tCHOSEN: %1 in %2 out to match in %3 out %4\n",
- possible_in, possible_out,
- in, out));
+ possible_in, possible_out,
+ in, out));
- out.set (DataType::MIDI, 0);
- out.set (DataType::AUDIO, audio_out);
-
- return true;
+ // exact match
+ _output_configs.insert (preferred_out);
+ exact_match = true;
+ found = true;
+ break;
}
}
/* now allow potentially "imprecise" matches */
- audio_out = -1;
- bool found = false;
-
+ int32_t audio_out = -1;
float penalty = 9999;
- const int preferred_out = out.n_audio ();
int used_possible_in = 0;
-#define FOUNDCFG(nch) { \
- float p = fabsf ((float)(nch) - preferred_out); \
- if ((nch) > preferred_out) { p *= 1.1; } \
- if (p < penalty) { \
- used_possible_in = possible_in; \
- audio_out = (nch); \
- penalty = p; \
- found = true; \
- } \
+#define FOUNDCFG(nch) { \
+ float p = fabsf ((float)(nch) - preferred_out); \
+ _output_configs.insert (nch); \
+ if ((nch) > preferred_out) { p *= 1.1; } \
+ if (p < penalty) { \
+ used_possible_in = possible_in; \
+ audio_out = (nch); \
+ penalty = p; \
+ found = true; \
+ } \
+}
+
+#define ANYTHINGGOES \
+ _output_configs.insert (0);
+
+#define UPTO(nch) { \
+ for (int n = 1; n < nch; ++n) { \
+ _output_configs.insert (n); \
+ } \
}
for (vector<pair<int,int> >::iterator i = io_configs.begin(); i != io_configs.end(); ++i) {
if (possible_out == -1) {
/* any configuration possible, provide stereo output */
FOUNDCFG (preferred_out);
+ ANYTHINGGOES;
} else if (possible_out == -2) {
/* invalid, should be (0, -1) */
FOUNDCFG (preferred_out);
+ ANYTHINGGOES;
} else if (possible_out < -2) {
/* variable number of outputs up to -N, */
FOUNDCFG (min (-possible_out, preferred_out));
+ UPTO (-possible_out);
} else {
/* exact number of outputs */
FOUNDCFG (possible_out);
} 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_out == -1) {
/* any configuration possible, pick matching */
FOUNDCFG (preferred_out);
+ ANYTHINGGOES;
} else if (possible_out == -2) {
/* invalid. interpret as (-1, -1) */
FOUNDCFG (preferred_out);
+ ANYTHINGGOES;
} else if (possible_out < -2) {
/* invalid, interpret as (<-2, <-2)
* variable number of outputs up to -N, */
FOUNDCFG (min (-possible_out, preferred_out));
+ UPTO (-possible_out)
} else {
/* exact number of outputs */
FOUNDCFG (possible_out);
if (audio_in > -possible_in && imprecise == NULL) {
/* request is too large */
} else if (possible_out == -1) {
- /* any output configuration possible, provide stereo out */
+ /* any output configuration possible */
FOUNDCFG (preferred_out);
+ ANYTHINGGOES;
} else if (possible_out == -2) {
/* invalid. interpret as (<-2, -1) */
FOUNDCFG (preferred_out);
+ ANYTHINGGOES;
} else if (possible_out < -2) {
/* variable number of outputs up to -N, */
FOUNDCFG (min (-possible_out, preferred_out));
+ UPTO (-possible_out)
} else {
/* exact number of outputs */
FOUNDCFG (possible_out);
if (possible_out == -1) {
/* any output configuration possible */
FOUNDCFG (preferred_out);
+ ANYTHINGGOES;
} else if (possible_out == -2) {
- /* plugins shouldn't really use (>0,-2) but might.
- * interpret as (>0,-1):
- */
+ /* plugins shouldn't really use (>0,-2), 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) {
+ if (!found) {
+ DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("\tFAIL: no io configs match %1\n", in));
+ return false;
+ }
+
+ if (exact_match) {
+ out.set (DataType::MIDI, 0); // currently always zero
+ out.set (DataType::AUDIO, preferred_out);
+ } else {
if (used_possible_in < -2 && audio_in == 0) {
// input-port count cannot be zero, use as many ports
// as outputs, but at most abs(possible_in)
audio_input_cnt = max (1, min (audio_out, -used_possible_in));
}
-
out.set (DataType::MIDI, 0); /// XXX
out.set (DataType::AUDIO, audio_out);
- DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("\tCHOSEN: in %1 out %2\n", in, out));
- } else {
- DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("\tFAIL: no io configs match %1\n", in));
- return false;
}
+ DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("\tCHOSEN: in %1 out %2\n", in, out));
return true;
}
projects / ardour.git / blobdiff