hostplugins/vst/PluginVst.cpp

/***************************************************************************
 *                                                                         *
 *   Copyright (C) 2008 - 2012 Andreas Persson                             *
 *                                                                         *
 *   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., 51 Franklin St, Fifth Floor, Boston,                *
 *   MA  02110-1301  USA                                                   *
 ***************************************************************************/

#include <cstdio>
#include <cstdlib>
#include <cstring>

#ifdef WIN32
#include <tchar.h>
#else
#include <cerrno>
#include <signal.h>
#include <sys/wait.h>
#include <unistd.h>
#include <dirent.h>
#include <sys/stat.h>
#endif

#include "PluginVst.h"
#include "../../drivers/midi/MidiInstrumentMapper.h"

#ifndef CHANNELS
#define CHANNELS 32
#endif

// the sampler can actually hold up a very huge amount of programs
// (2^32 [maps] * 2^16 [banks MSB + LSB] * 2^8 [programs per bank]  =  2^56 [total programs] )
// however I am not sure if we might crash some VST host with a number
// here that is too huge, however this should be enough in most cases ...
#define MAX_VST_PROGRAMS (128*128)

using namespace LinuxSampler;

namespace {

#if defined(WIN32) && CONFIG_DEBUG_LEVEL >= 2
// on windows, send debug logging to a file instead of a non-existent
// console
#include <cstdarg>
#include "../../common/Mutex.h"
    LinuxSampler::Mutex logmutex;

    void log(const char* fmt, ...) {
        logmutex.Lock();
        FILE* f = fopen((String(getenv("TEMP")) + "\\linuxsamplervst.log").c_str(), "a");
        va_list ap;
        va_start(ap, fmt);
        vfprintf(f, fmt, ap);
        va_end(ap);
        fclose(f);
        logmutex.Unlock();
    }
#undef dmsg
#define dmsg(debuglevel,x) log x;
#endif


// *************** LinuxSamplerEditor ***************
// *

    LinuxSamplerEditor::LinuxSamplerEditor(AudioEffect* effect) :
        AEffEditor(effect) {
        dmsg(2, ("-->LinuxSamplerEditor constructor\n"));
#ifdef WIN32
        ProcessHandle = INVALID_HANDLE_VALUE;
#else
        pid = 0;
#endif
    }

    LinuxSamplerEditor::~LinuxSamplerEditor() {
        close();
    }

    String LinuxSamplerEditor::FindFantasia() {
        String fantasia;
#ifdef WIN32
        // assume Fantasia is in the same directory or one directory above
        // the liblinuxsampler dll
        String lspath = LinuxSampler::Sampler::GetInstallDir();
        if (!lspath.empty()) {
            lspath += "\\";
            WIN32_FIND_DATA fd;
            HANDLE hFind =
                FindFirstFile((lspath + "Fantasia*.jar").c_str(), &fd);
            if (hFind == INVALID_HANDLE_VALUE) {
                lspath += "..\\";
                hFind = FindFirstFile((lspath + "Fantasia*.jar").c_str(), &fd);
            }
            if (hFind != INVALID_HANDLE_VALUE) {
                fantasia = fd.cFileName;
                FindClose(hFind);
                return lspath + fantasia;
            }
        }
#elif defined(__APPLE__)
        // look for the java application wrapper
        const char* cmd =
            "/Applications/LinuxSampler/Fantasia.app"
            "/Contents/MacOS/JavaApplicationStub";
        fantasia = String(getenv("HOME")) + cmd;
        struct stat buf;
        if (stat(fantasia.c_str(), &buf) != 0) {
            fantasia = stat(cmd, &buf) == 0 ? cmd : "";
        }
#else
        // search in <datadir>/java (default: /usr/local/share/java)
        String path(DATADIR);
        path += *(path.end() - 1) == '/' ? "java" : "/java";
        DIR* dir = opendir(path.c_str());
        if (dir) {
            while (dirent* d = readdir(dir)) {
                const char* name = d->d_name;
                if (strncmp("Fantasia", name, 8) == 0 &&
                    strcmp(name + strlen(name) - 4, ".jar") == 0) {
                    fantasia = path + "/" + name;
                }
            }
            closedir(dir);
        }
#endif
        return fantasia;
    }

    bool LinuxSamplerEditor::open(void* ptr) {
        dmsg(2, ("-->LinuxSamplerEditor::open\n"));
        AEffEditor::open(ptr);

        // try to start the JSampler Fantasia GUI as a separate process
#ifdef WIN32
        // first check if it's already running
        if (ProcessHandle != INVALID_HANDLE_VALUE) {
            DWORD exitCode;
            if (GetExitCodeProcess(ProcessHandle, &exitCode)) {
                if (exitCode == STILL_ACTIVE) return true;
            }
            free(Command);
            CloseHandle(ProcessHandle);
            ProcessHandle = INVALID_HANDLE_VALUE;
        }

        String fantasia = FindFantasia();
        if (!fantasia.empty()) {
            // start a java process
            String path; // look in PATH first
            for (int i = 0 ; i < 2 ; i++) { // two tries
                STARTUPINFO si;
                PROCESS_INFORMATION pi;
                ZeroMemory(&si, sizeof(si));
                si.cb = sizeof(si);
                ZeroMemory(&pi, sizeof(pi));

                Command = _tcsdup(TEXT((String("\"") + path +
                                        "javaw\" -jar \"" + fantasia +
                                        "\"").c_str()));
                if (CreateProcess(NULL, Command, NULL, NULL, FALSE, 0, NULL,
                                  NULL, &si, &pi)) {
                    ProcessHandle = pi.hProcess;
                    CloseHandle(pi.hThread);
                    break;
                } else {
                    free(Command);
                    if (path.empty()) {
                        // java wasn't found in PATH, try again
                        // with an alternative directory
                        char* windir = getenv("windir");
                        if (!windir) break;
#ifdef _WIN64
                        // LS plugin is 64 bit - look for 32 bit java
                        path = String(windir) + "\\SysWOW64\\";
#else
                        // LS plugin is 32 bit - look for 64 bit java
                        path = String(windir) + "\\Sysnative\\";
#endif
                    }
                }
            }
        }
#else
        // first check if it's already running
        if (pid && waitpid(pid, 0, WNOHANG) == 0) return true;

        String fantasia = FindFantasia();
        if (!fantasia.empty())
        {
            // start a java process
            pid = fork();
            if (pid == -1) {
                dmsg(1, ("fork failed %d %s\n", errno, strerror(errno)));
                pid = 0;
            } else if (pid == 0) {
#ifdef __APPLE__
                execl(fantasia.c_str(), fantasia.c_str(), (char*)0);
#else
                execlp("java", "java", "-jar", fantasia.c_str(), (char*)0);
#endif
                dmsg(1, ("exec failed %d %s\n", errno, strerror(errno)));

                // make sure something is executed, so the static
                // destructors copied from the parent don't run
                execl("/usr/bin/true", "/usr/bin/true", (char*)0);
            }
        }
#endif
        dmsg(2, ("<--LinuxSamplerEditor::open\n"));
        return true;
    }

    void LinuxSamplerEditor::close() {
        systemWindow = 0;
#ifdef WIN32
        if (ProcessHandle != INVALID_HANDLE_VALUE) {
            TerminateProcess(ProcessHandle, 0);
            free(Command);
            CloseHandle(ProcessHandle);
            ProcessHandle = INVALID_HANDLE_VALUE;
        }
#else
        if (pid) {
            kill(pid, SIGTERM);
            waitpid(pid, 0, 0);
            pid = 0;
        }
#endif
    }

    bool LinuxSamplerEditor::getRect(ERect** rect) {
        ERect* r = new ERect();
        r->top = 0;
        r->left = 0;
        r->bottom = 1; // 0 makes EnergyXT and Ardour on Linux crash
        r->right = 400;
        *rect = r;
        return true;
    }


// *************** LinuxSamplerVst ***************
// *

    LinuxSamplerVst::LinuxSamplerVst(audioMasterCallback audioMaster) :
        AudioEffectX(audioMaster, MAX_VST_PROGRAMS, 0),
        StateBuf(0)
    {
        dmsg(2, ("-->constructor\n"));

        setProgram(0);
        setNumInputs(0);
        setNumOutputs(CHANNELS);
        canProcessReplacing();
        isSynth();
        programsAreChunks();
        setUniqueID(CCONST('L', 'S', 'm', 'p')); // (registred at Steinberg)
        setEditor(new LinuxSamplerEditor(this));

        suspend();
        dmsg(2, ("<--constructor\n"));
    }


    void LinuxSamplerVst::resume() {
        dmsg(2, ("-->resume\n"));

        // Ardour initially sets blockSize to zero - we postpone the
        // initialization until we have a blockSize
        if (blockSize != 0) {
            if (!pAudioDevice) {
                Init(int(sampleRate), blockSize, CHANNELS);

                if (!SavedChunk.empty()) {
                    SetState(SavedChunk);
                    SavedChunk.clear();
                } else {
                    InitState();
                }
            } else {
                Init(int(sampleRate), blockSize, CHANNELS);
            }
        }
        AudioEffectX::resume();
        dmsg(2, ("<--resume\n"));
    }

    LinuxSamplerVst::~LinuxSamplerVst() {
        dmsg(2, ("-->destructor\n"));
        if (StateBuf) free(StateBuf);
        dmsg(2, ("<--destructor\n"));
    }


    void LinuxSamplerVst::setProgram(VstInt32 program) {
        if (program < 0 || program >= MAX_VST_PROGRAMS ||
            !pMidiDevice || !pMidiDevice->Port()) return;
        
        int i = 0;
        const std::vector<int> maps = MidiInstrumentMapper::Maps();
        for (int iMap = 0; iMap < maps.size(); ++iMap) {
            const int mapID = maps[iMap];
            const std::map<midi_prog_index_t, MidiInstrumentMapper::entry_t> mappings =
                MidiInstrumentMapper::Entries(maps[mapID]);
            for (std::map<midi_prog_index_t, MidiInstrumentMapper::entry_t>::const_iterator iter = mappings.begin();
                 iter != mappings.end(); ++iter, ++i)
            {
                if (i == program) {
                    //TODO: switch MIDI instrument map before sending bank select and program change
                    
                    const uint iMIDIChannel = 0;
                    pMidiDevice->Port()->DispatchBankSelectMsb(iter->first.midi_bank_msb, iMIDIChannel);
                    pMidiDevice->Port()->DispatchBankSelectLsb(iter->first.midi_bank_lsb, iMIDIChannel);
                    pMidiDevice->Port()->DispatchProgramChange(iter->first.midi_prog, iMIDIChannel);
                    
                    curProgram = program;
                    
                    return;
                }
            }
        }
    }

    void LinuxSamplerVst::setProgramName(char* name) {
        int i = 0;
        const std::vector<int> maps = MidiInstrumentMapper::Maps();
        for (int iMap = 0; iMap < maps.size(); ++iMap) {
            const int mapID = maps[iMap];
            const std::map<midi_prog_index_t, MidiInstrumentMapper::entry_t> mappings =
                MidiInstrumentMapper::Entries(maps[mapID]);
            for (std::map<midi_prog_index_t, MidiInstrumentMapper::entry_t>::const_iterator iter = mappings.begin();
                 iter != mappings.end(); ++iter, ++i)
            {
                if (i == curProgram) {
                    char buf[kVstMaxProgNameLen + 1] = {};
                    vst_strncpy(buf, name, kVstMaxProgNameLen);
                    MidiInstrumentMapper::entry_t entry = iter->second;
                    entry.Name = buf;
                    try {
                        MidiInstrumentMapper::AddOrReplaceEntry(
                            mapID, iter->first, entry, false/*bInBackground*/
                        );
                    } catch (Exception e) {
                        e.PrintMessage();
                    }
                    return;
                }
            }
        }
    }

    void LinuxSamplerVst::getProgramName(char* name) {
        if (!getProgramNameIndexed(0 /*dont care*/, curProgram, name)) {
            vst_strncpy(name, "unknown", kVstMaxProgNameLen);
        }
    }

    bool LinuxSamplerVst::getProgramNameIndexed(VstInt32 /*category*/, VstInt32 index,
                                                char* text)
    {
        //NOTE: parameter 'category' is unused in VST 2.4
        
        int i = 0;
        const std::vector<int> maps = MidiInstrumentMapper::Maps();
        for (int iMap = 0; iMap < maps.size(); ++iMap) {
            const int mapID = maps[iMap];
            const std::map<midi_prog_index_t, MidiInstrumentMapper::entry_t> mappings =
                MidiInstrumentMapper::Entries(maps[mapID]);
            for (std::map<midi_prog_index_t, MidiInstrumentMapper::entry_t>::const_iterator iter = mappings.begin();
                 iter != mappings.end(); ++iter, ++i)
            {
                if (i == index) {
                    vst_strncpy(text, iter->second.Name.c_str(), kVstMaxProgNameLen);
                    return true;
                }
            }
        }
        return false;
    }


    bool LinuxSamplerVst::getOutputProperties(VstInt32 index,
                                              VstPinProperties* properties) {
        if (index < CHANNELS) {
            sprintf(properties->label, "LS %d", index + 1);
            properties->flags = kVstPinIsActive | kVstPinIsStereo;
            return true;
        }
        return false;
    }


    bool LinuxSamplerVst::getEffectName(char* name) {
        vst_strncpy(name, "LinuxSampler", kVstMaxEffectNameLen);
        return true;
    }


    bool LinuxSamplerVst::getVendorString(char* text) {
        vst_strncpy(text, "linuxsampler.org", kVstMaxVendorStrLen);
        return true;
    }


    bool LinuxSamplerVst::getProductString(char* text) {
        vst_strncpy(text, "LinuxSampler VST", kVstMaxProductStrLen);
        return true;
    }


    VstInt32 LinuxSamplerVst::getVendorVersion() {
        return 1000;
    }


    VstInt32 LinuxSamplerVst::canDo(char* text) {
        dmsg(2, ("canDo %s\n", text));
        
        // supported features
        if (strcmp(text, "receiveVstEvents") == 0 ||
            strcmp(text, "receiveVstMidiEvent") == 0 ||
            strcmp(text, "midiProgramNames") == 0) return 1;
        
        // not supported features
        if (strcmp(text, "sendVstEvents") == 0 ||
            strcmp(text, "sendVstMidiEvent") == 0 ||
            strcmp(text, "receiveVstTimeInfo") == 0 ||
            strcmp(text, "offline") == 0 ||
            strcmp(text, "bypass") == 0) return -1;
        
        return 0; // "don't know", never heard of this feature
    }

    void LinuxSamplerVst::setSampleRate(float sampleRate) {
        dmsg(2, ("linuxsampler: setSampleRate %f\n", sampleRate));
        AudioEffectX::setSampleRate(sampleRate);
    }

    void LinuxSamplerVst::setBlockSize(VstInt32 blockSize) {
        dmsg(2, ("linuxsampler: setBlockSize %d\n", blockSize));
        AudioEffectX::setBlockSize(blockSize);
    }


    void LinuxSamplerVst::processReplacing(float** inputs, float** outputs,
                                           VstInt32 sampleFrames) {
        if (pAudioDevice) {
            for (int i = 0 ; i < CHANNELS ; i++) {
                pAudioDevice->Channel(i)->SetBuffer(outputs[i]);
            }
            pAudioDevice->Render(sampleFrames);
        } else {
            for (int i = 0 ; i < CHANNELS ; i++) {
                memset(outputs[i], 0, sampleFrames * sizeof(float));
            }
        }
    }


    VstInt32 LinuxSamplerVst::processEvents(VstEvents* ev) {
        if (pMidiDevice) {
            for (int i = 0; i < ev->numEvents; i++)
            {
                if (ev->events[i]->type == kVstMidiType) {
                    VstMidiEvent* event = reinterpret_cast<VstMidiEvent*>(ev->events[i]);
                    pMidiDevice->Port()->DispatchRaw(reinterpret_cast<uint8_t*>(event->midiData),
                                                     event->deltaFrames);
                }
            }
        }
        return 1;
    }


    VstInt32 LinuxSamplerVst::getChunk(void** data, bool isPreset) {
        dmsg(2, ("-->getChunk\n"));

        String state = GetState();
        dmsg(2, ("state=\"%s\"\n", state.c_str()));;
        if (StateBuf) free(StateBuf);
        StateBuf = strdup(state.c_str());
        *data = StateBuf;
        dmsg(2, ("<--getChunk\n"));
        return state.length() + 1;
    }


    VstInt32 LinuxSamplerVst::setChunk(void* data, VstInt32 byteSize,
                                       bool isPreset) {
        dmsg(2, ("-->setChunk byteSize=%d isPreset=%d\n", byteSize, isPreset));

        const char* state = static_cast<const char*>(data);
        VstInt32 res = 0;
        if (byteSize > 0 && state[byteSize - 1] == '\0') {
            dmsg(2, ("state=\"%s\"\n", state));
            if (pAudioDevice) {
                res = SetState(state);
            } else {
                SavedChunk = state;
            }
        }
        dmsg(2, ("<--setChunk\n"));
        return res;
    }
}


// *************** VST main function ***************
// *

AudioEffect* createEffectInstance(audioMasterCallback audioMaster)
{
    return new LinuxSamplerVst(audioMaster);
}
1	persson	1777	/***************************************************************************
2			* *
3	persson	2347	* Copyright (C) 2008 - 2012 Andreas Persson *
4	persson	1777	* *
5			* This program is free software; you can redistribute it and/or modify *
6			* it under the terms of the GNU General Public License as published by *
7			* the Free Software Foundation; either version 2 of the License, or *
8			* (at your option) any later version. *
9			* *
10			* This program is distributed in the hope that it will be useful, *
11			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
12			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13			* GNU General Public License for more details. *
14			* *
15			* You should have received a copy of the GNU General Public License *
16			* along with this program; if not, write to the Free Software *
17			* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *
18			* MA 02110-1301 USA *
19			***************************************************************************/
20
21			#include <cstdio>
22			#include <cstdlib>
23			#include <cstring>
24
25			#ifdef WIN32
26			#include <tchar.h>
27	persson	2347	#else
28			#include <cerrno>
29			#include <signal.h>
30			#include <sys/wait.h>
31			#include <unistd.h>
32			#include <dirent.h>
33			#include <sys/stat.h>
34	persson	1777	#endif
35
36			#include "PluginVst.h"
37	schoenebeck	2372	#include "../../drivers/midi/MidiInstrumentMapper.h"
38	persson	1777
39	persson	1908	#ifndef CHANNELS
40	persson	1917	#define CHANNELS 32
41	persson	1908	#endif
42
43	schoenebeck	2372	// the sampler can actually hold up a very huge amount of programs
44			// (2^32 [maps] * 2^16 [banks MSB + LSB] * 2^8 [programs per bank] = 2^56 [total programs] )
45			// however I am not sure if we might crash some VST host with a number
46			// here that is too huge, however this should be enough in most cases ...
47			#define MAX_VST_PROGRAMS (128*128)
48
49			using namespace LinuxSampler;
50
51	persson	1777	namespace {
52
53			#if defined(WIN32) && CONFIG_DEBUG_LEVEL >= 2
54			// on windows, send debug logging to a file instead of a non-existent
55			// console
56			#include <cstdarg>
57			#include "../../common/Mutex.h"
58			LinuxSampler::Mutex logmutex;
59
60			void log(const char* fmt, ...) {
61			logmutex.Lock();
62	persson	2165	FILE* f = fopen((String(getenv("TEMP")) + "\\linuxsamplervst.log").c_str(), "a");
63	persson	1777	va_list ap;
64			va_start(ap, fmt);
65			vfprintf(f, fmt, ap);
66			va_end(ap);
67			fclose(f);
68			logmutex.Unlock();
69			}
70			#undef dmsg
71			#define dmsg(debuglevel,x) log x;
72			#endif
73
74
75			// ************* LinuxSamplerEditor *************
76			// *
77
78			LinuxSamplerEditor::LinuxSamplerEditor(AudioEffect* effect) :
79			AEffEditor(effect) {
80			dmsg(2, ("-->LinuxSamplerEditor constructor\n"));
81	persson	1895	#ifdef WIN32
82			ProcessHandle = INVALID_HANDLE_VALUE;
83	persson	2347	#else
84			pid = 0;
85	persson	1895	#endif
86	persson	1777	}
87
88	persson	1895	LinuxSamplerEditor::~LinuxSamplerEditor() {
89			close();
90			}
91
92	persson	2347	String LinuxSamplerEditor::FindFantasia() {
93			String fantasia;
94			#ifdef WIN32
95			// assume Fantasia is in the same directory or one directory above
96			// the liblinuxsampler dll
97			String lspath = LinuxSampler::Sampler::GetInstallDir();
98			if (!lspath.empty()) {
99			lspath += "\\";
100			WIN32_FIND_DATA fd;
101			HANDLE hFind =
102			FindFirstFile((lspath + "Fantasia*.jar").c_str(), &fd);
103			if (hFind == INVALID_HANDLE_VALUE) {
104			lspath += "..\\";
105			hFind = FindFirstFile((lspath + "Fantasia*.jar").c_str(), &fd);
106			}
107			if (hFind != INVALID_HANDLE_VALUE) {
108			fantasia = fd.cFileName;
109			FindClose(hFind);
110			return lspath + fantasia;
111			}
112			}
113			#elif defined(__APPLE__)
114			// look for the java application wrapper
115			const char* cmd =
116			"/Applications/LinuxSampler/Fantasia.app"
117			"/Contents/MacOS/JavaApplicationStub";
118			fantasia = String(getenv("HOME")) + cmd;
119			struct stat buf;
120			if (stat(fantasia.c_str(), &buf) != 0) {
121			fantasia = stat(cmd, &buf) == 0 ? cmd : "";
122			}
123			#else
124			// search in <datadir>/java (default: /usr/local/share/java)
125			String path(DATADIR);
126			path += *(path.end() - 1) == '/' ? "java" : "/java";
127			DIR* dir = opendir(path.c_str());
128			if (dir) {
129			while (dirent* d = readdir(dir)) {
130			const char* name = d->d_name;
131			if (strncmp("Fantasia", name, 8) == 0 &&
132			strcmp(name + strlen(name) - 4, ".jar") == 0) {
133			fantasia = path + "/" + name;
134			}
135			}
136			closedir(dir);
137			}
138			#endif
139			return fantasia;
140			}
141
142	persson	1777	bool LinuxSamplerEditor::open(void* ptr) {
143			dmsg(2, ("-->LinuxSamplerEditor::open\n"));
144			AEffEditor::open(ptr);
145
146	persson	2347	// try to start the JSampler Fantasia GUI as a separate process
147	persson	1777	#ifdef WIN32
148	persson	1908	// first check if it's already running
149			if (ProcessHandle != INVALID_HANDLE_VALUE) {
150			DWORD exitCode;
151			if (GetExitCodeProcess(ProcessHandle, &exitCode)) {
152			if (exitCode == STILL_ACTIVE) return true;
153			}
154			free(Command);
155			CloseHandle(ProcessHandle);
156			ProcessHandle = INVALID_HANDLE_VALUE;
157			}
158	persson	1777
159	persson	2347	String fantasia = FindFantasia();
160			if (!fantasia.empty()) {
161			// start a java process
162			String path; // look in PATH first
163			for (int i = 0 ; i < 2 ; i++) { // two tries
164			STARTUPINFO si;
165			PROCESS_INFORMATION pi;
166			ZeroMemory(&si, sizeof(si));
167			si.cb = sizeof(si);
168			ZeroMemory(&pi, sizeof(pi));
169	persson	1777
170	persson	2347	Command = _tcsdup(TEXT((String("\"") + path +
171			"javaw\" -jar \"" + fantasia +
172			"\"").c_str()));
173			if (CreateProcess(NULL, Command, NULL, NULL, FALSE, 0, NULL,
174			NULL, &si, &pi)) {
175			ProcessHandle = pi.hProcess;
176			CloseHandle(pi.hThread);
177			break;
178			} else {
179			free(Command);
180			if (path.empty()) {
181			// java wasn't found in PATH, try again
182			// with an alternative directory
183			char* windir = getenv("windir");
184			if (!windir) break;
185	persson	2165	#ifdef _WIN64
186	persson	2347	// LS plugin is 64 bit - look for 32 bit java
187			path = String(windir) + "\\SysWOW64\\";
188	persson	2165	#else
189	persson	2347	// LS plugin is 32 bit - look for 64 bit java
190			path = String(windir) + "\\Sysnative\\";
191	persson	2165	#endif
192			}
193			}
194	persson	1777	}
195			}
196	persson	2347	#else
197			// first check if it's already running
198			if (pid && waitpid(pid, 0, WNOHANG) == 0) return true;
199
200			String fantasia = FindFantasia();
201			if (!fantasia.empty())
202			{
203			// start a java process
204			pid = fork();
205			if (pid == -1) {
206			dmsg(1, ("fork failed %d %s\n", errno, strerror(errno)));
207			pid = 0;
208			} else if (pid == 0) {
209			#ifdef __APPLE__
210			execl(fantasia.c_str(), fantasia.c_str(), (char*)0);
211			#else
212			execlp("java", "java", "-jar", fantasia.c_str(), (char*)0);
213	persson	1777	#endif
214	persson	2347	dmsg(1, ("exec failed %d %s\n", errno, strerror(errno)));
215
216	persson	2360	// make sure something is executed, so the static
217	persson	2347	// destructors copied from the parent don't run
218			execl("/usr/bin/true", "/usr/bin/true", (char*)0);
219			}
220			}
221			#endif
222	persson	1777	dmsg(2, ("<--LinuxSamplerEditor::open\n"));
223			return true;
224			}
225
226			void LinuxSamplerEditor::close() {
227			systemWindow = 0;
228			#ifdef WIN32
229			if (ProcessHandle != INVALID_HANDLE_VALUE) {
230			TerminateProcess(ProcessHandle, 0);
231			free(Command);
232	persson	1908	CloseHandle(ProcessHandle);
233	persson	1895	ProcessHandle = INVALID_HANDLE_VALUE;
234	persson	1777	}
235	persson	2347	#else
236			if (pid) {
237			kill(pid, SIGTERM);
238			waitpid(pid, 0, 0);
239			pid = 0;
240			}
241	persson	1777	#endif
242			}
243
244			bool LinuxSamplerEditor::getRect(ERect** rect) {
245			ERect* r = new ERect();
246			r->top = 0;
247			r->left = 0;
248	persson	2347	r->bottom = 1; // 0 makes EnergyXT and Ardour on Linux crash
249	persson	1777	r->right = 400;
250			*rect = r;
251			return true;
252			}
253
254
255			// ************* LinuxSamplerVst *************
256			// *
257
258			LinuxSamplerVst::LinuxSamplerVst(audioMasterCallback audioMaster) :
259	schoenebeck	2372	AudioEffectX(audioMaster, MAX_VST_PROGRAMS, 0),
260	persson	1777	StateBuf(0)
261			{
262			dmsg(2, ("-->constructor\n"));
263
264			setProgram(0);
265			setNumInputs(0);
266	persson	1908	setNumOutputs(CHANNELS);
267	persson	1777	canProcessReplacing();
268			isSynth();
269			programsAreChunks();
270			setUniqueID(CCONST('L', 'S', 'm', 'p')); // (registred at Steinberg)
271			setEditor(new LinuxSamplerEditor(this));
272
273			suspend();
274			dmsg(2, ("<--constructor\n"));
275			}
276
277
278			void LinuxSamplerVst::resume() {
279			dmsg(2, ("-->resume\n"));
280
281	persson	2347	// Ardour initially sets blockSize to zero - we postpone the
282			// initialization until we have a blockSize
283			if (blockSize != 0) {
284			if (!pAudioDevice) {
285			Init(int(sampleRate), blockSize, CHANNELS);
286
287			if (!SavedChunk.empty()) {
288			SetState(SavedChunk);
289			SavedChunk.clear();
290			} else {
291			InitState();
292			}
293	persson	1777	} else {
294	persson	2347	Init(int(sampleRate), blockSize, CHANNELS);
295	persson	1777	}
296			}
297	senoner	1942	AudioEffectX::resume();
298	persson	1777	dmsg(2, ("<--resume\n"));
299			}
300
301			LinuxSamplerVst::~LinuxSamplerVst() {
302			dmsg(2, ("-->destructor\n"));
303			if (StateBuf) free(StateBuf);
304			dmsg(2, ("<--destructor\n"));
305			}
306
307
308			void LinuxSamplerVst::setProgram(VstInt32 program) {
309	schoenebeck	2372	if (program < 0 \|\| program >= MAX_VST_PROGRAMS \|\|
310			!pMidiDevice \|\| !pMidiDevice->Port()) return;
311
312			int i = 0;
313			const std::vector<int> maps = MidiInstrumentMapper::Maps();
314			for (int iMap = 0; iMap < maps.size(); ++iMap) {
315			const int mapID = maps[iMap];
316			const std::map<midi_prog_index_t, MidiInstrumentMapper::entry_t> mappings =
317			MidiInstrumentMapper::Entries(maps[mapID]);
318			for (std::map<midi_prog_index_t, MidiInstrumentMapper::entry_t>::const_iterator iter = mappings.begin();
319			iter != mappings.end(); ++iter, ++i)
320			{
321			if (i == program) {
322			//TODO: switch MIDI instrument map before sending bank select and program change
323
324			const uint iMIDIChannel = 0;
325			pMidiDevice->Port()->DispatchBankSelectMsb(iter->first.midi_bank_msb, iMIDIChannel);
326			pMidiDevice->Port()->DispatchBankSelectLsb(iter->first.midi_bank_lsb, iMIDIChannel);
327			pMidiDevice->Port()->DispatchProgramChange(iter->first.midi_prog, iMIDIChannel);
328
329			curProgram = program;
330
331			return;
332			}
333			}
334			}
335	persson	1777	}
336
337			void LinuxSamplerVst::setProgramName(char* name) {
338	schoenebeck	2372	int i = 0;
339			const std::vector<int> maps = MidiInstrumentMapper::Maps();
340			for (int iMap = 0; iMap < maps.size(); ++iMap) {
341			const int mapID = maps[iMap];
342			const std::map<midi_prog_index_t, MidiInstrumentMapper::entry_t> mappings =
343			MidiInstrumentMapper::Entries(maps[mapID]);
344			for (std::map<midi_prog_index_t, MidiInstrumentMapper::entry_t>::const_iterator iter = mappings.begin();
345			iter != mappings.end(); ++iter, ++i)
346			{
347			if (i == curProgram) {
348			char buf[kVstMaxProgNameLen + 1] = {};
349			vst_strncpy(buf, name, kVstMaxProgNameLen);
350			MidiInstrumentMapper::entry_t entry = iter->second;
351			entry.Name = buf;
352			try {
353			MidiInstrumentMapper::AddOrReplaceEntry(
354			mapID, iter->first, entry, false/bInBackground/
355			);
356			} catch (Exception e) {
357			e.PrintMessage();
358			}
359			return;
360			}
361			}
362			}
363	persson	1777	}
364
365			void LinuxSamplerVst::getProgramName(char* name) {
366	schoenebeck	2372	if (!getProgramNameIndexed(0 /dont care/, curProgram, name)) {
367			vst_strncpy(name, "unknown", kVstMaxProgNameLen);
368			}
369	persson	1777	}
370
371	schoenebeck	2372	bool LinuxSamplerVst::getProgramNameIndexed(VstInt32 /category/, VstInt32 index,
372			char* text)
373			{
374			//NOTE: parameter 'category' is unused in VST 2.4
375
376			int i = 0;
377			const std::vector<int> maps = MidiInstrumentMapper::Maps();
378			for (int iMap = 0; iMap < maps.size(); ++iMap) {
379			const int mapID = maps[iMap];
380			const std::map<midi_prog_index_t, MidiInstrumentMapper::entry_t> mappings =
381			MidiInstrumentMapper::Entries(maps[mapID]);
382			for (std::map<midi_prog_index_t, MidiInstrumentMapper::entry_t>::const_iterator iter = mappings.begin();
383			iter != mappings.end(); ++iter, ++i)
384			{
385			if (i == index) {
386			vst_strncpy(text, iter->second.Name.c_str(), kVstMaxProgNameLen);
387			return true;
388			}
389			}
390			}
391			return false;
392			}
393	persson	1777
394	schoenebeck	2372
395	persson	1777	bool LinuxSamplerVst::getOutputProperties(VstInt32 index,
396			VstPinProperties* properties) {
397	persson	1908	if (index < CHANNELS) {
398	persson	1777	sprintf(properties->label, "LS %d", index + 1);
399			properties->flags = kVstPinIsActive \| kVstPinIsStereo;
400			return true;
401			}
402			return false;
403			}
404
405
406			bool LinuxSamplerVst::getEffectName(char* name) {
407			vst_strncpy(name, "LinuxSampler", kVstMaxEffectNameLen);
408			return true;
409			}
410
411
412			bool LinuxSamplerVst::getVendorString(char* text) {
413			vst_strncpy(text, "linuxsampler.org", kVstMaxVendorStrLen);
414			return true;
415			}
416
417
418			bool LinuxSamplerVst::getProductString(char* text) {
419			vst_strncpy(text, "LinuxSampler VST", kVstMaxProductStrLen);
420			return true;
421			}
422
423
424			VstInt32 LinuxSamplerVst::getVendorVersion() {
425			return 1000;
426			}
427
428
429			VstInt32 LinuxSamplerVst::canDo(char* text) {
430			dmsg(2, ("canDo %s\n", text));
431	schoenebeck	2372
432			// supported features
433	persson	1777	if (strcmp(text, "receiveVstEvents") == 0 \|\|
434	schoenebeck	2372	strcmp(text, "receiveVstMidiEvent") == 0 \|\|
435			strcmp(text, "midiProgramNames") == 0) return 1;
436
437			// not supported features
438			if (strcmp(text, "sendVstEvents") == 0 \|\|
439			strcmp(text, "sendVstMidiEvent") == 0 \|\|
440			strcmp(text, "receiveVstTimeInfo") == 0 \|\|
441			strcmp(text, "offline") == 0 \|\|
442			strcmp(text, "bypass") == 0) return -1;
443
444			return 0; // "don't know", never heard of this feature
445	persson	1777	}
446
447			void LinuxSamplerVst::setSampleRate(float sampleRate) {
448			dmsg(2, ("linuxsampler: setSampleRate %f\n", sampleRate));
449			AudioEffectX::setSampleRate(sampleRate);
450			}
451
452			void LinuxSamplerVst::setBlockSize(VstInt32 blockSize) {
453			dmsg(2, ("linuxsampler: setBlockSize %d\n", blockSize));
454			AudioEffectX::setBlockSize(blockSize);
455			}
456
457
458			void LinuxSamplerVst::processReplacing(float inputs, float outputs,
459			VstInt32 sampleFrames) {
460			if (pAudioDevice) {
461	persson	1908	for (int i = 0 ; i < CHANNELS ; i++) {
462			pAudioDevice->Channel(i)->SetBuffer(outputs[i]);
463			}
464	persson	1777	pAudioDevice->Render(sampleFrames);
465			} else {
466	persson	1908	for (int i = 0 ; i < CHANNELS ; i++) {
467			memset(outputs[i], 0, sampleFrames * sizeof(float));
468			}
469	persson	1777	}
470			}
471
472
473			VstInt32 LinuxSamplerVst::processEvents(VstEvents* ev) {
474			if (pMidiDevice) {
475			for (int i = 0; i < ev->numEvents; i++)
476			{
477			if (ev->events[i]->type == kVstMidiType) {
478			VstMidiEvent* event = reinterpret_cast<VstMidiEvent*>(ev->events[i]);
479			pMidiDevice->Port()->DispatchRaw(reinterpret_cast<uint8_t*>(event->midiData),
480			event->deltaFrames);
481			}
482			}
483			}
484			return 1;
485			}
486
487
488			VstInt32 LinuxSamplerVst::getChunk(void** data, bool isPreset) {
489			dmsg(2, ("-->getChunk\n"));
490
491			String state = GetState();
492			dmsg(2, ("state=\"%s\"\n", state.c_str()));;
493			if (StateBuf) free(StateBuf);
494			StateBuf = strdup(state.c_str());
495			*data = StateBuf;
496			dmsg(2, ("<--getChunk\n"));
497			return state.length() + 1;
498			}
499
500
501			VstInt32 LinuxSamplerVst::setChunk(void* data, VstInt32 byteSize,
502			bool isPreset) {
503			dmsg(2, ("-->setChunk byteSize=%d isPreset=%d\n", byteSize, isPreset));
504
505			const char* state = static_cast<const char*>(data);
506			VstInt32 res = 0;
507			if (byteSize > 0 && state[byteSize - 1] == '\0') {
508			dmsg(2, ("state=\"%s\"\n", state));
509			if (pAudioDevice) {
510			res = SetState(state);
511			} else {
512			SavedChunk = state;
513			}
514			}
515			dmsg(2, ("<--setChunk\n"));
516			return res;
517			}
518			}
519
520
521			// ************* VST main function *************
522			// *
523
524			AudioEffect* createEffectInstance(audioMasterCallback audioMaster)
525			{
526			return new LinuxSamplerVst(audioMaster);
527			}