hostplugins/vst/PluginVst.cpp

/***************************************************************************
 *                                                                         *
 *   Copyright (C) 2008 - 2009 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>
#endif

#include "PluginVst.h"

#ifndef CHANNELS
#define CHANNELS 32
#endif

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("C:\\linuxsamplervst.log", "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


// *************** LinuxSamplerVstProgram ***************
// *

    LinuxSamplerVstProgram::LinuxSamplerVstProgram() {
        vst_strncpy(name, "Basic", kVstMaxProgNameLen);
    }


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

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

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

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

#ifdef WIN32
        // try to start the JSample Fantasia GUI as a separate process

        // 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;
        }

        // 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) {
                String fantasia(fd.cFileName);
                FindClose(hFind);

                // start a java process
                STARTUPINFO si;
                PROCESS_INFORMATION pi;
                ZeroMemory(&si, sizeof(si));
                si.cb = sizeof(si);
                ZeroMemory(&pi, sizeof(pi));

                Command = _tcsdup(TEXT((String("javaw -jar \"") + lspath + fantasia + "\"").c_str()));
                CreateProcess(NULL, Command, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi);
                ProcessHandle = pi.hProcess;
                CloseHandle(pi.hThread);
            }
        }
#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;
        }
#endif
    }

    bool LinuxSamplerEditor::getRect(ERect** rect) {
        ERect* r = new ERect();
        r->top = 0;
        r->left = 0;
        r->bottom = 0;
        r->right = 400;
        *rect = r;
        return true;
    }


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

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

        Programs = new LinuxSamplerVstProgram[NbPrograms];
        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"));
        if (!pAudioDevice) {
            Init(int(sampleRate), blockSize, CHANNELS);

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

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


    void LinuxSamplerVst::setProgram(VstInt32 program) {
        if (program < 0 || program >= NbPrograms) return;

        curProgram = program;
    }


    void LinuxSamplerVst::setProgramName(char* name) {
        vst_strncpy(Programs[curProgram].name, name, kVstMaxProgNameLen);
    }


    void LinuxSamplerVst::getProgramName(char* name) {
        vst_strncpy(name, Programs[curProgram].name, kVstMaxProgNameLen);
    }


    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::getProgramNameIndexed(VstInt32 category, VstInt32 index,
                                                char* text) {
        if (index < NbPrograms) {
            vst_strncpy(text, Programs[index].name, kVstMaxProgNameLen);
            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));
        if (strcmp(text, "receiveVstEvents") == 0 ||
            strcmp(text, "receiveVstMidiEvent") == 0) return 1;
        return -1;
    }

    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	1908	* Copyright (C) 2008 - 2009 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			#endif
28
29			#include "PluginVst.h"
30
31	persson	1908	#ifndef CHANNELS
32	persson	1917	#define CHANNELS 32
33	persson	1908	#endif
34
35	persson	1777	namespace {
36
37			#if defined(WIN32) && CONFIG_DEBUG_LEVEL >= 2
38			// on windows, send debug logging to a file instead of a non-existent
39			// console
40			#include <cstdarg>
41			#include "../../common/Mutex.h"
42			LinuxSampler::Mutex logmutex;
43
44			void log(const char* fmt, ...) {
45			logmutex.Lock();
46			FILE* f = fopen("C:\\linuxsamplervst.log", "a");
47			va_list ap;
48			va_start(ap, fmt);
49			vfprintf(f, fmt, ap);
50			va_end(ap);
51			fclose(f);
52			logmutex.Unlock();
53			}
54			#undef dmsg
55			#define dmsg(debuglevel,x) log x;
56			#endif
57
58
59			// ************* LinuxSamplerVstProgram *************
60			// *
61
62			LinuxSamplerVstProgram::LinuxSamplerVstProgram() {
63			vst_strncpy(name, "Basic", kVstMaxProgNameLen);
64			}
65
66
67			// ************* LinuxSamplerEditor *************
68			// *
69
70			LinuxSamplerEditor::LinuxSamplerEditor(AudioEffect* effect) :
71			AEffEditor(effect) {
72			dmsg(2, ("-->LinuxSamplerEditor constructor\n"));
73	persson	1895	#ifdef WIN32
74			ProcessHandle = INVALID_HANDLE_VALUE;
75			#endif
76	persson	1777	}
77
78	persson	1895	LinuxSamplerEditor::~LinuxSamplerEditor() {
79			close();
80			}
81
82	persson	1777	bool LinuxSamplerEditor::open(void* ptr) {
83			dmsg(2, ("-->LinuxSamplerEditor::open\n"));
84			AEffEditor::open(ptr);
85
86			#ifdef WIN32
87			// try to start the JSample Fantasia GUI as a separate process
88
89	persson	1908	// first check if it's already running
90			if (ProcessHandle != INVALID_HANDLE_VALUE) {
91			DWORD exitCode;
92			if (GetExitCodeProcess(ProcessHandle, &exitCode)) {
93			if (exitCode == STILL_ACTIVE) return true;
94			}
95			free(Command);
96			CloseHandle(ProcessHandle);
97			ProcessHandle = INVALID_HANDLE_VALUE;
98			}
99	persson	1777
100	schoenebeck	1928	// assume Fantasia is in the same directory or one directory above
101			// the liblinuxsampler dll
102	persson	1897	String lspath = LinuxSampler::Sampler::GetInstallDir();
103			if (!lspath.empty()) {
104			lspath += "\\";
105	persson	1777	WIN32_FIND_DATA fd;
106			HANDLE hFind = FindFirstFile((lspath + "Fantasia*.jar").c_str(), &fd);
107	schoenebeck	1928	if (hFind == INVALID_HANDLE_VALUE) {
108			lspath += "..\\";
109			hFind = FindFirstFile((lspath + "Fantasia*.jar").c_str(), &fd);
110			}
111	persson	1777	if (hFind != INVALID_HANDLE_VALUE) {
112			String fantasia(fd.cFileName);
113			FindClose(hFind);
114
115			// start a java process
116			STARTUPINFO si;
117			PROCESS_INFORMATION pi;
118			ZeroMemory(&si, sizeof(si));
119			si.cb = sizeof(si);
120			ZeroMemory(&pi, sizeof(pi));
121
122	senoner	1920	Command = _tcsdup(TEXT((String("javaw -jar \"") + lspath + fantasia + "\"").c_str()));
123	persson	1777	CreateProcess(NULL, Command, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi);
124			ProcessHandle = pi.hProcess;
125	persson	1908	CloseHandle(pi.hThread);
126	persson	1777	}
127			}
128			#endif
129			dmsg(2, ("<--LinuxSamplerEditor::open\n"));
130			return true;
131			}
132
133			void LinuxSamplerEditor::close() {
134			systemWindow = 0;
135			#ifdef WIN32
136			if (ProcessHandle != INVALID_HANDLE_VALUE) {
137			TerminateProcess(ProcessHandle, 0);
138			free(Command);
139	persson	1908	CloseHandle(ProcessHandle);
140	persson	1895	ProcessHandle = INVALID_HANDLE_VALUE;
141	persson	1777	}
142			#endif
143			}
144
145			bool LinuxSamplerEditor::getRect(ERect** rect) {
146			ERect* r = new ERect();
147			r->top = 0;
148			r->left = 0;
149			r->bottom = 0;
150			r->right = 400;
151			*rect = r;
152			return true;
153			}
154
155
156			// ************* LinuxSamplerVst *************
157			// *
158
159			LinuxSamplerVst::LinuxSamplerVst(audioMasterCallback audioMaster) :
160			AudioEffectX(audioMaster, NbPrograms, 0),
161			StateBuf(0)
162			{
163			dmsg(2, ("-->constructor\n"));
164
165			Programs = new LinuxSamplerVstProgram[NbPrograms];
166			setProgram(0);
167			setNumInputs(0);
168	persson	1908	setNumOutputs(CHANNELS);
169	persson	1777	canProcessReplacing();
170			isSynth();
171			programsAreChunks();
172			setUniqueID(CCONST('L', 'S', 'm', 'p')); // (registred at Steinberg)
173			setEditor(new LinuxSamplerEditor(this));
174
175			suspend();
176			dmsg(2, ("<--constructor\n"));
177			}
178
179
180			void LinuxSamplerVst::resume() {
181			dmsg(2, ("-->resume\n"));
182			if (!pAudioDevice) {
183	persson	1908	Init(int(sampleRate), blockSize, CHANNELS);
184	persson	1777
185	persson	1895	if (!SavedChunk.empty()) {
186	persson	1777	SetState(SavedChunk);
187	persson	1895	SavedChunk.clear();
188	persson	1777	} else {
189			InitState();
190			}
191	persson	1895	} else {
192			Init(int(sampleRate), blockSize);
193	persson	1777	}
194	senoner	1942	AudioEffectX::resume();
195	persson	1777	dmsg(2, ("<--resume\n"));
196			}
197
198			LinuxSamplerVst::~LinuxSamplerVst() {
199			dmsg(2, ("-->destructor\n"));
200			delete[] Programs;
201			if (StateBuf) free(StateBuf);
202			dmsg(2, ("<--destructor\n"));
203			}
204
205
206			void LinuxSamplerVst::setProgram(VstInt32 program) {
207			if (program < 0 \|\| program >= NbPrograms) return;
208
209			curProgram = program;
210			}
211
212
213			void LinuxSamplerVst::setProgramName(char* name) {
214			vst_strncpy(Programs[curProgram].name, name, kVstMaxProgNameLen);
215			}
216
217
218			void LinuxSamplerVst::getProgramName(char* name) {
219			vst_strncpy(name, Programs[curProgram].name, kVstMaxProgNameLen);
220			}
221
222
223			bool LinuxSamplerVst::getOutputProperties(VstInt32 index,
224			VstPinProperties* properties) {
225	persson	1908	if (index < CHANNELS) {
226	persson	1777	sprintf(properties->label, "LS %d", index + 1);
227			properties->flags = kVstPinIsActive \| kVstPinIsStereo;
228			return true;
229			}
230			return false;
231			}
232
233
234			bool LinuxSamplerVst::getProgramNameIndexed(VstInt32 category, VstInt32 index,
235			char* text) {
236			if (index < NbPrograms) {
237			vst_strncpy(text, Programs[index].name, kVstMaxProgNameLen);
238			return true;
239			}
240			return false;
241			}
242
243
244			bool LinuxSamplerVst::getEffectName(char* name) {
245			vst_strncpy(name, "LinuxSampler", kVstMaxEffectNameLen);
246			return true;
247			}
248
249
250			bool LinuxSamplerVst::getVendorString(char* text) {
251			vst_strncpy(text, "linuxsampler.org", kVstMaxVendorStrLen);
252			return true;
253			}
254
255
256			bool LinuxSamplerVst::getProductString(char* text) {
257			vst_strncpy(text, "LinuxSampler VST", kVstMaxProductStrLen);
258			return true;
259			}
260
261
262			VstInt32 LinuxSamplerVst::getVendorVersion() {
263			return 1000;
264			}
265
266
267			VstInt32 LinuxSamplerVst::canDo(char* text) {
268			dmsg(2, ("canDo %s\n", text));
269			if (strcmp(text, "receiveVstEvents") == 0 \|\|
270			strcmp(text, "receiveVstMidiEvent") == 0) return 1;
271			return -1;
272			}
273
274			void LinuxSamplerVst::setSampleRate(float sampleRate) {
275			dmsg(2, ("linuxsampler: setSampleRate %f\n", sampleRate));
276			AudioEffectX::setSampleRate(sampleRate);
277			}
278
279			void LinuxSamplerVst::setBlockSize(VstInt32 blockSize) {
280			dmsg(2, ("linuxsampler: setBlockSize %d\n", blockSize));
281			AudioEffectX::setBlockSize(blockSize);
282			}
283
284
285			void LinuxSamplerVst::processReplacing(float inputs, float outputs,
286			VstInt32 sampleFrames) {
287			if (pAudioDevice) {
288	persson	1908	for (int i = 0 ; i < CHANNELS ; i++) {
289			pAudioDevice->Channel(i)->SetBuffer(outputs[i]);
290			}
291	persson	1777	pAudioDevice->Render(sampleFrames);
292			} else {
293	persson	1908	for (int i = 0 ; i < CHANNELS ; i++) {
294			memset(outputs[i], 0, sampleFrames * sizeof(float));
295			}
296	persson	1777	}
297			}
298
299
300			VstInt32 LinuxSamplerVst::processEvents(VstEvents* ev) {
301			if (pMidiDevice) {
302			for (int i = 0; i < ev->numEvents; i++)
303			{
304			if (ev->events[i]->type == kVstMidiType) {
305			VstMidiEvent* event = reinterpret_cast<VstMidiEvent*>(ev->events[i]);
306			pMidiDevice->Port()->DispatchRaw(reinterpret_cast<uint8_t*>(event->midiData),
307			event->deltaFrames);
308			}
309			}
310			}
311			return 1;
312			}
313
314
315			VstInt32 LinuxSamplerVst::getChunk(void** data, bool isPreset) {
316			dmsg(2, ("-->getChunk\n"));
317
318			String state = GetState();
319			dmsg(2, ("state=\"%s\"\n", state.c_str()));;
320			if (StateBuf) free(StateBuf);
321			StateBuf = strdup(state.c_str());
322			*data = StateBuf;
323			dmsg(2, ("<--getChunk\n"));
324			return state.length() + 1;
325			}
326
327
328			VstInt32 LinuxSamplerVst::setChunk(void* data, VstInt32 byteSize,
329			bool isPreset) {
330			dmsg(2, ("-->setChunk byteSize=%d isPreset=%d\n", byteSize, isPreset));
331
332			const char* state = static_cast<const char*>(data);
333			VstInt32 res = 0;
334			if (byteSize > 0 && state[byteSize - 1] == '\0') {
335			dmsg(2, ("state=\"%s\"\n", state));
336			if (pAudioDevice) {
337			res = SetState(state);
338			} else {
339			SavedChunk = state;
340			}
341			}
342			dmsg(2, ("<--setChunk\n"));
343			return res;
344			}
345			}
346
347
348			// ************* VST main function *************
349			// *
350
351			AudioEffect* createEffectInstance(audioMasterCallback audioMaster)
352			{
353			return new LinuxSamplerVst(audioMaster);
354			}