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initial unfinished support for AU host callbacks (tempo, musical time, transport state)

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git-svn-id: svn://localhost/ardour2/branches/2.0-ongoing@6001 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Paul Davis 2009-11-02 17:31:09 +00:00
parent 2ec80665ea
commit ad25b45537
2 changed files with 113 additions and 3 deletions
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20
libs/ardour/ardour/audio_unit.h
View file

@ -115,6 +115,24 @@ class AUPlugin : public ARDOUR::Plugin
UInt32 inBusNumber,
UInt32 inNumberFrames,
AudioBufferList* ioData);
/* "host" callbacks */
OSStatus get_beat_and_tempo_callback (Float64* outCurrentBeat,
Float64* outCurrentTempo);
OSStatus get_musical_time_location_callback (UInt32* outDeltaSampleOffsetToNextBeat,
Float32* outTimeSig_Numerator,
UInt32* outTimeSig_Denominator,
Float64* outCurrentMeasureDownBeat);
OSStatus get_transport_state_callback (Boolean* outIsPlaying,
Boolean* outTransportStateChanged,
Float64* outCurrentSampleInTimeLine,
Boolean* outIsCycling,
Float64* outCycleStartBeat,
Float64* outCycleEndBeat);
private:
boost::shared_ptr<CAComponent> comp;
boost::shared_ptr<CAAudioUnit> unit;
@ -197,7 +215,7 @@ class AUPluginInfo : public PluginInfo {
static bool cached_io_configuration (const std::string&, UInt32, CAComponent&, AUPluginCachedInfo&, const std::string& name);
static void add_cached_info (const std::string&, AUPluginCachedInfo&);
static void save_cached_info ();
static void save_cached_info ();
};
typedef boost::shared_ptr<AUPluginInfo> AUPluginInfoPtr;

96
libs/ardour/audio_unit.cc
View file

@ -1,5 +1,5 @@
/*
Copyright (C) 2006 Paul Davis
Copyright (C) 2006-2009 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -71,9 +71,58 @@ _render_callback(void *userData,
UInt32 inNumberFrames,
AudioBufferList* ioData)
{
return ((AUPlugin*)userData)->render_callback (ioActionFlags, inTimeStamp, inBusNumber, inNumberFrames, ioData);
if (userData) {
return ((AUPlugin*)userData)->render_callback (ioActionFlags, inTimeStamp, inBusNumber, inNumberFrames, ioData);
}
return paramErr;
}
static OSStatus
_get_beat_and_tempo_callback (void* userData,
Float64* outCurrentBeat,
Float64* outCurrentTempo)
{
if (userData) {
return ((AUPlugin*)userData)->get_beat_and_tempo_callback (outCurrentBeat, outCurrentTempo);
}
return paramErr;
}
static OSStatus
_get_musical_time_location_callback (void * userData,
UInt32 * outDeltaSampleOffsetToNextBeat,
Float32 * outTimeSig_Numerator,
UInt32 * outTimeSig_Denominator,
Float64 * outCurrentMeasureDownBeat)
{
if (userData) {
return ((AUPlugin*)userData)->get_musical_time_location_callback (outDeltaSampleOffsetToNextBeat,
outTimeSig_Numerator,
outTimeSig_Denominator,
outCurrentMeasureDownBeat);
}
return paramErr;
}
static OSStatus
_get_transport_state_callback (void* userData,
Boolean* outIsPlaying,
Boolean* outTransportStateChanged,
Float64* outCurrentSampleInTimeLine,
Boolean* outIsCycling,
Float64* outCycleStartBeat,
Float64* outCycleEndBeat)
{
if (userData) {
return ((AUPlugin*)userData)->get_transport_state_callback (outIsPlaying, outTransportStateChanged,
outCurrentSampleInTimeLine, outIsCycling,
outCycleStartBeat, outCycleEndBeat);
}
return paramErr;
}
static int
save_property_list (CFPropertyListRef propertyList, Glib::ustring path)
@ -386,6 +435,22 @@ AUPlugin::init ()
throw failed_constructor();
}
/* tell the plugin about tempo/meter/transport callbacks in case it wants them */
HostCallbackInfo info;
memset (&info, 0, sizeof (HostCallbackInfo));
info.hostUserData = this;
info.beatAndTempoProc = _get_beat_and_tempo_callback;
info.musicalTimeLocationProc = _get_musical_time_location_callback;
info.transportStateProc = _get_transport_state_callback;
//ignore result of this - don't care if the property isn't supported
unit->SetProperty (kAudioUnitProperty_HostCallbacks,
kAudioUnitScope_Global,
0, //elementID
&info,
sizeof (HostCallbackInfo));
unit->GetElementCount (kAudioUnitScope_Global, global_elements);
unit->GetElementCount (kAudioUnitScope_Input, input_elements);
unit->GetElementCount (kAudioUnitScope_Output, output_elements);
@ -971,6 +1036,33 @@ AUPlugin::connect_and_run (vector<Sample*>& bufs, uint32_t maxbuf, int32_t& in,
return -1;
}
OSStatus
AUPlugin::get_beat_and_tempo_callback (Float64* outCurrentBeat,
Float64* outCurrentTempo)
{
return kAudioUnitErr_CannotDoInCurrentContext;
}
OSStatus
AUPlugin::get_musical_time_location_callback (UInt32* outDeltaSampleOffsetToNextBeat,
Float32* outTimeSig_Numerator,
UInt32* outTimeSig_Denominator,
Float64* outCurrentMeasureDownBeat)
{
return kAudioUnitErr_CannotDoInCurrentContext;
}
OSStatus
AUPlugin::get_transport_state_callback (Boolean* outIsPlaying,
Boolean* outTransportStateChanged,
Float64* outCurrentSampleInTimeLine,
Boolean* outIsCycling,
Float64* outCycleStartBeat,
Float64* outCycleEndBeat)
{
return kAudioUnitErr_CannotDoInCurrentContext;
}
set<uint32_t>
AUPlugin::automatable() const
{