jack2/macosx/JackCoreAudioAdapter.h

/*
Copyright (C) 2008 Grame

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
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#ifndef __JackCoreAudioAdapter__
#define __JackCoreAudioAdapter__

#include "JackAudioAdapterInterface.h"
#include "jack.h"
#include "jslist.h"
#include <AudioToolbox/AudioConverter.h>
#include <CoreAudio/CoreAudio.h>
#include <AudioUnit/AudioUnit.h>

namespace Jack
{

typedef	UInt8	CAAudioHardwareDeviceSectionID;
#define	kAudioDeviceSectionInput	((CAAudioHardwareDeviceSectionID)0x01)
#define	kAudioDeviceSectionOutput	((CAAudioHardwareDeviceSectionID)0x00)
#define	kAudioDeviceSectionGlobal	((CAAudioHardwareDeviceSectionID)0x00)
#define	kAudioDeviceSectionWildcard	((CAAudioHardwareDeviceSectionID)0xFF)

/*!
\brief Audio adapter using CoreAudio API.
*/

class JackCoreAudioAdapter : public JackAudioAdapterInterface
{

    private:
    
        AudioUnit fAUHAL;
        AudioBufferList* fInputData;
        
        AudioDeviceID fDeviceID;
        bool fState;

        AudioUnitRenderActionFlags* fActionFags;
        AudioTimeStamp* fCurrentTime;
        
        static	OSStatus Render(void *inRefCon,
                                AudioUnitRenderActionFlags *ioActionFlags,
                                const AudioTimeStamp *inTimeStamp,
                                UInt32 inBusNumber,
                                UInt32 inNumberFrames,
                                AudioBufferList *ioData);
                           
        static OSStatus SRNotificationCallback(AudioDeviceID inDevice,
                                                UInt32 inChannel,
                                                Boolean	isInput,
                                                AudioDevicePropertyID inPropertyID,
                                                void* inClientData);

        OSStatus GetDefaultDevice(AudioDeviceID* id);
        OSStatus GetTotalChannels(AudioDeviceID device, int* channelCount, bool isInput);

        // Setup
        int SetupDevices(const char* capture_driver_uid,
                         const char* playback_driver_uid,
                         char* capture_driver_name,
                         char* playback_driver_name);

        int SetupChannels(bool capturing,
                          bool playing,
                          int& inchannels,
                          int& outchannels,
                          int& in_nChannels,
                          int& out_nChannels,
                          bool strict);
                          
        int OpenAUHAL(bool capturing,
                    bool playing,
                    int inchannels,
                    int outchannels,
                    int in_nChannels,
                    int out_nChannels,
                    jack_nframes_t buffer_size,
                    jack_nframes_t samplerate,
                    bool strict);

        int SetupBufferSizeAndSampleRate(jack_nframes_t buffer_size, jack_nframes_t samplerate);
        int SetupBuffers(int inchannels, int outchannels);
        void DisposeBuffers();
        void CloseAUHAL();

    public:
    
        JackCoreAudioAdapter( jack_nframes_t buffer_size, jack_nframes_t sample_rate, const JSList* params);
        ~JackCoreAudioAdapter()
        {}
        
        virtual int Open();
        virtual int Close();
        
        virtual int SetBufferSize(jack_nframes_t buffer_size);
       
};
}

#ifdef __cplusplus
extern "C"
{
#endif

#include "JackExports.h"
#include "driver_interface.h"

EXPORT jack_driver_desc_t* jack_get_descriptor();

#ifdef __cplusplus
}
#endif

#endif