midi_patch_manager.h

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/*
    Copyright (C) 2008 Hans Baier

    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.

    $Id$
*/

#ifndef MIDI_PATCH_MANAGER_H_
#define MIDI_PATCH_MANAGER_H_

#include "midi++/midnam_patch.h"
#include "pbd/signals.h"
#include "ardour/session_handle.h"

namespace ARDOUR {
        class Session;
}

namespace MIDI
{

namespace Name
{

class LIBARDOUR_API MidiPatchManager : public PBD::ScopedConnectionList, public ARDOUR::SessionHandlePtr
{
private:
        MidiPatchManager();
        MidiPatchManager( const MidiPatchManager& );
        MidiPatchManager& operator= (const MidiPatchManager&);

        static MidiPatchManager* _manager;

public:
        typedef std::map<std::string, boost::shared_ptr<MIDINameDocument> >    MidiNameDocuments;
        typedef std::map<std::string, MIDINameDocument::MasterDeviceNamesList> DeviceNamesByMaker;

        virtual ~MidiPatchManager() { _manager = 0; }

        static MidiPatchManager& instance() {
                if (_manager == 0) {
                        _manager = new MidiPatchManager();
                }
                return *_manager;
        }

        void set_session (ARDOUR::Session*);

        boost::shared_ptr<MIDINameDocument> document_by_model(std::string model_name)
                { return _documents[model_name]; }

        boost::shared_ptr<MasterDeviceNames> master_device_by_model(std::string model_name)
                { return _master_devices_by_model[model_name]; }

        boost::shared_ptr<ChannelNameSet> find_channel_name_set(
                        std::string model,
                        std::string custom_device_mode,
                        uint8_t channel) {
                boost::shared_ptr<MIDI::Name::MasterDeviceNames> master_device = master_device_by_model(model);

                if (master_device != 0 && custom_device_mode != "") {
                        return master_device->channel_name_set_by_channel(custom_device_mode, channel);
                } else {
                        return boost::shared_ptr<ChannelNameSet>();
                }
        }

        boost::shared_ptr<Patch> find_patch(
                        std::string model,
                        std::string custom_device_mode,
                        uint8_t channel,
                        PatchPrimaryKey patch_key) {

                boost::shared_ptr<ChannelNameSet> channel_name_set = find_channel_name_set(model, custom_device_mode, channel);

                if (channel_name_set) {
                        return  channel_name_set->find_patch(patch_key);
                } else {
                        return boost::shared_ptr<Patch>();
                }
        }

        boost::shared_ptr<Patch> previous_patch(
                        std::string model,
                        std::string custom_device_mode,
                        uint8_t channel,
                        PatchPrimaryKey patch_key) {

                boost::shared_ptr<ChannelNameSet> channel_name_set = find_channel_name_set(model, custom_device_mode, channel);

                if (channel_name_set) {
                        return  channel_name_set->previous_patch(patch_key);
                } else {
                        return boost::shared_ptr<Patch>();
                }
        }

        boost::shared_ptr<Patch> next_patch(
                        std::string model,
                        std::string custom_device_mode,
                        uint8_t channel,
                        PatchPrimaryKey patch_key) {

                boost::shared_ptr<ChannelNameSet> channel_name_set = find_channel_name_set(model, custom_device_mode, channel);

                if (channel_name_set) {
                        return  channel_name_set->next_patch(patch_key);
                } else {
                        return boost::shared_ptr<Patch>();
                }
        }

        std::list<std::string> custom_device_mode_names_by_model(std::string model_name) {
                if (model_name != "") {
                        if (master_device_by_model(model_name)) {
                                return master_device_by_model(model_name)->custom_device_mode_names();
                        }
                }
                return std::list<std::string>();
        }

        const MasterDeviceNames::Models& all_models() const { return _all_models; }

        const DeviceNamesByMaker& devices_by_manufacturer() const { return _devices_by_manufacturer; }

private:
        void session_going_away();
        void refresh();
        void add_session_patches();

        MidiNameDocuments                       _documents;
        MIDINameDocument::MasterDeviceNamesList _master_devices_by_model;
        DeviceNamesByMaker                      _devices_by_manufacturer;
        MasterDeviceNames::Models               _all_models;
};

} // namespace Name

} // namespace MIDI

#endif /* MIDI_PATCH_MANAGER_H_ */