diff options
Diffstat (limited to 'libs/ardour/audio_unit.cc')
| -rw-r--r-- | libs/ardour/audio_unit.cc | 96 |
1 files changed, 94 insertions, 2 deletions
diff --git a/libs/ardour/audio_unit.cc b/libs/ardour/audio_unit.cc index 5102604066..33600f6acd 100644 --- a/libs/ardour/audio_unit.cc +++ b/libs/ardour/audio_unit.cc @@ -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 { |