src/engines/FxSend.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
 *   Copyright (C) 2005 - 2007 Christian Schoenebeck                       *
 *                                                                         *
 *   This library 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 library 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 library; if not, write to the Free Software           *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#include "FxSend.h"

#include "../drivers/audio/AudioOutputDevice.h"
#include "../common/RTMath.h"

#include <map>

#define DEFAULT_FX_SEND_LEVEL   0.0f

namespace LinuxSampler {

    FxSend::FxSend(EngineChannel* pEngineChannel, uint8_t MidiCtrl, String Name) throw (Exception) {
        this->pEngineChannel = pEngineChannel;
        AudioOutputDevice* pDevice = pEngineChannel->GetAudioOutputDevice();
        const int iChanOffset = (pDevice) ? pDevice->ChannelCount() - pEngineChannel->Channels() : 0;
        for (int i = 0; i < pEngineChannel->Channels(); i++) {
            const int iDestination = iChanOffset + i;
            Routing.push_back(iDestination);
        }
        SetMidiController(MidiCtrl);
        sName = Name;

        // create an EngineChannel unique ID for this FxSend instance
        if (!pEngineChannel->GetFxSendCount()) iId = 0;
        else {
            // get the highest existing map ID
            uint highestIndex = 0;
            for (uint i = 0; i < pEngineChannel->GetFxSendCount(); i++)
                highestIndex = RTMath::Max(highestIndex, pEngineChannel->GetFxSend(i)->Id());
            // check if we reached the index limit
            if (highestIndex + 1 < highestIndex) {
                // search for an unoccupied map ID starting from 0
                for (uint i = 0; i < highestIndex; i++) {
                    bool bOccupied = false;
                    for (uint j = 0; j < pEngineChannel->GetFxSendCount(); j++) {
                        if (pEngineChannel->GetFxSend(j)->Id() == i) {
                            bOccupied = true;
                            break;
                        }
                    }
                    if (!bOccupied) {
                        iId = i;
                        goto __done;
                    }
                }
                throw Exception("Internal error: could not find unoccupied FxSend ID.");
            }
            iId = highestIndex + 1;
        }
        __done:

        fLevel = DEFAULT_FX_SEND_LEVEL;
    }

    int FxSend::DestinationChannel(int SrcChan) {
        if (SrcChan >= pEngineChannel->Channels()) return -1;
        return Routing[SrcChan];
    }

    void FxSend::SetDestinationChannel(int SrcChan, int DstChan) throw (Exception) {
        if (SrcChan < 0 || SrcChan >= pEngineChannel->Channels())
            throw Exception("Cannot alter FxSend routing, source channel out of bounds");
        AudioOutputDevice* pDevice = pEngineChannel->GetAudioOutputDevice();
        if (pDevice) {
            if (DstChan < 0 || DstChan >= pDevice->ChannelCount())
                throw Exception("Cannot alter FxSend routing, destination channel out of bounds");
        } else { // no audio device assigned yet
            if (DstChan < 0 || DstChan >= pEngineChannel->Channels())
                throw Exception(
                    "there is no audio device yet, so you cannot set a "
                    "FxSend destination channel higher than the engine "
                    "channel's amount of channels"
                );
        }
        Routing[SrcChan] = DstChan;
    }

    void FxSend::UpdateChannels() {
        if (Routing.size() > pEngineChannel->Channels()) {
            // add routings with default destinations
            AudioOutputDevice* pDevice = pEngineChannel->GetAudioOutputDevice();
            const int iChanOffset = (pDevice) ? pDevice->ChannelCount() - pEngineChannel->Channels() : 0;
            for (int i = Routing.size(); i < pEngineChannel->Channels(); i++) {
                const int iDestination = iChanOffset + i;
                Routing.push_back(iDestination);
            }
        } else if (Routing.size() < pEngineChannel->Channels()) {
            // shrink routing vector
            Routing.resize(pEngineChannel->Channels());
        }
    }

    float FxSend::Level() {
        return fLevel;
    }

    void FxSend::SetLevel(float f) {
        if(fLevel == f) return;
        fLevel = f;
        SetInfoChanged(true);
    }

    void FxSend::SetLevel(uint8_t iMidiValue) {
        fLevel = float(iMidiValue & 0x7f) / 127.0f;
        SetInfoChanged(true);
    }

    void FxSend::Reset() {
        SetLevel(DEFAULT_FX_SEND_LEVEL);
    }

    uint8_t FxSend::MidiController() {
        return MidiFxSendController;
    }

    void FxSend::SetMidiController(uint8_t MidiCtrl) throw (Exception) {
        if (MidiCtrl >> 7)
            throw Exception("Invalid MIDI controller " + ToString((int)MidiCtrl));
        MidiFxSendController = MidiCtrl;
    }

    String FxSend::Name() {
        return sName;
    }

    void FxSend::SetName(String Name) {
        sName = Name;
    }

    uint FxSend::Id() {
        return iId;
    }

    void FxSend::SetInfoChanged(bool b) {
        bInfoChanged = b;
    }

    bool FxSend::IsInfoChanged() {
        return bInfoChanged;
    }

} // namespace LinuxSampler
1	schoenebeck	1001	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5			* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6	schoenebeck	1017	* Copyright (C) 2005 - 2007 Christian Schoenebeck *
7	schoenebeck	1001	* *
8			* This library is free software; you can redistribute it and/or modify *
9			* it under the terms of the GNU General Public License as published by *
10			* the Free Software Foundation; either version 2 of the License, or *
11			* (at your option) any later version. *
12			* *
13			* This library is distributed in the hope that it will be useful, *
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16			* GNU General Public License for more details. *
17			* *
18			* You should have received a copy of the GNU General Public License *
19			* along with this library; if not, write to the Free Software *
20			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21			* MA 02111-1307 USA *
22			***************************************************************************/
23
24			#include "FxSend.h"
25
26			#include "../drivers/audio/AudioOutputDevice.h"
27	schoenebeck	1017	#include "../common/RTMath.h"
28	schoenebeck	1001
29			#include <map>
30
31	schoenebeck	1040	#define DEFAULT_FX_SEND_LEVEL 0.0f
32
33	schoenebeck	1001	namespace LinuxSampler {
34
35	schoenebeck	1017	FxSend::FxSend(EngineChannel* pEngineChannel, uint8_t MidiCtrl, String Name) throw (Exception) {
36	schoenebeck	1001	this->pEngineChannel = pEngineChannel;
37			AudioOutputDevice* pDevice = pEngineChannel->GetAudioOutputDevice();
38			const int iChanOffset = (pDevice) ? pDevice->ChannelCount() - pEngineChannel->Channels() : 0;
39			for (int i = 0; i < pEngineChannel->Channels(); i++) {
40			const int iDestination = iChanOffset + i;
41			Routing.push_back(iDestination);
42			}
43	schoenebeck	1026	SetMidiController(MidiCtrl);
44	schoenebeck	1001	sName = Name;
45	schoenebeck	1017
46			// create an EngineChannel unique ID for this FxSend instance
47			if (!pEngineChannel->GetFxSendCount()) iId = 0;
48			else {
49			// get the highest existing map ID
50			uint highestIndex = 0;
51			for (uint i = 0; i < pEngineChannel->GetFxSendCount(); i++)
52			highestIndex = RTMath::Max(highestIndex, pEngineChannel->GetFxSend(i)->Id());
53			// check if we reached the index limit
54			if (highestIndex + 1 < highestIndex) {
55			// search for an unoccupied map ID starting from 0
56			for (uint i = 0; i < highestIndex; i++) {
57			bool bOccupied = false;
58			for (uint j = 0; j < pEngineChannel->GetFxSendCount(); j++) {
59			if (pEngineChannel->GetFxSend(j)->Id() == i) {
60			bOccupied = true;
61			break;
62			}
63			}
64			if (!bOccupied) {
65			iId = i;
66			goto __done;
67			}
68			}
69			throw Exception("Internal error: could not find unoccupied FxSend ID.");
70			}
71			iId = highestIndex + 1;
72			}
73			__done:
74
75	schoenebeck	1040	fLevel = DEFAULT_FX_SEND_LEVEL;
76	schoenebeck	1001	}
77
78			int FxSend::DestinationChannel(int SrcChan) {
79			if (SrcChan >= pEngineChannel->Channels()) return -1;
80			return Routing[SrcChan];
81			}
82
83			void FxSend::SetDestinationChannel(int SrcChan, int DstChan) throw (Exception) {
84			if (SrcChan < 0 \|\| SrcChan >= pEngineChannel->Channels())
85			throw Exception("Cannot alter FxSend routing, source channel out of bounds");
86			AudioOutputDevice* pDevice = pEngineChannel->GetAudioOutputDevice();
87			if (pDevice) {
88			if (DstChan < 0 \|\| DstChan >= pDevice->ChannelCount())
89			throw Exception("Cannot alter FxSend routing, destination channel out of bounds");
90			} else { // no audio device assigned yet
91			if (DstChan < 0 \|\| DstChan >= pEngineChannel->Channels())
92			throw Exception(
93			"there is no audio device yet, so you cannot set a "
94			"FxSend destination channel higher than the engine "
95			"channel's amount of channels"
96			);
97			}
98			Routing[SrcChan] = DstChan;
99			}
100
101			void FxSend::UpdateChannels() {
102			if (Routing.size() > pEngineChannel->Channels()) {
103			// add routings with default destinations
104			AudioOutputDevice* pDevice = pEngineChannel->GetAudioOutputDevice();
105			const int iChanOffset = (pDevice) ? pDevice->ChannelCount() - pEngineChannel->Channels() : 0;
106			for (int i = Routing.size(); i < pEngineChannel->Channels(); i++) {
107			const int iDestination = iChanOffset + i;
108			Routing.push_back(iDestination);
109			}
110			} else if (Routing.size() < pEngineChannel->Channels()) {
111			// shrink routing vector
112			Routing.resize(pEngineChannel->Channels());
113			}
114			}
115
116			float FxSend::Level() {
117			return fLevel;
118			}
119
120			void FxSend::SetLevel(float f) {
121	iliev	1108	if(fLevel == f) return;
122	schoenebeck	1001	fLevel = f;
123	iliev	1108	SetInfoChanged(true);
124	schoenebeck	1001	}
125
126			void FxSend::SetLevel(uint8_t iMidiValue) {
127			fLevel = float(iMidiValue & 0x7f) / 127.0f;
128	iliev	1108	SetInfoChanged(true);
129	schoenebeck	1001	}
130
131	schoenebeck	1040	void FxSend::Reset() {
132	iliev	1108	SetLevel(DEFAULT_FX_SEND_LEVEL);
133	schoenebeck	1040	}
134
135	schoenebeck	1001	uint8_t FxSend::MidiController() {
136			return MidiFxSendController;
137			}
138
139			void FxSend::SetMidiController(uint8_t MidiCtrl) throw (Exception) {
140	schoenebeck	1026	if (MidiCtrl >> 7)
141			throw Exception("Invalid MIDI controller " + ToString((int)MidiCtrl));
142	schoenebeck	1001	MidiFxSendController = MidiCtrl;
143			}
144
145			String FxSend::Name() {
146			return sName;
147			}
148
149	iliev	1135	void FxSend::SetName(String Name) {
150			sName = Name;
151			}
152
153	schoenebeck	1001	uint FxSend::Id() {
154			return iId;
155			}
156
157	iliev	1108	void FxSend::SetInfoChanged(bool b) {
158			bInfoChanged = b;
159			}
160
161			bool FxSend::IsInfoChanged() {
162			return bInfoChanged;
163			}
164
165	schoenebeck	1001	} // namespace LinuxSampler