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RemoteVstPlugin.cpp
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RemoteVstPlugin.cpp
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/*
* RemoteVstPlugin.cpp - LMMS VST Support Layer (RemotePlugin client)
*
* Copyright (c) 2005-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
*
* This file is part of LMMS - https://lmms.io
*
* Code partly taken from (X)FST:
* Copyright (c) 2004 Paul Davis
* Copyright (c) 2004 Torben Hohn
* Copyright (c) 2002 Kjetil S. Matheussen
*
* 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 (see COPYING); if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*
*/
#include "lmmsconfig.h"
#define BUILD_REMOTE_PLUGIN_CLIENT
#include "RemotePlugin.h"
#ifdef LMMS_HAVE_PTHREAD_H
#include <pthread.h>
#endif
#ifdef LMMS_HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef LMMS_BUILD_LINUX
#ifndef NOMINMAX
#define NOMINMAX
#endif
#ifndef O_BINARY
#define O_BINARY 0
#endif
#ifdef LMMS_HAVE_SCHED_H
#include <sched.h>
#endif
#include <wine/exception.h>
#endif
#define USE_WS_PREFIX
#include <windows.h>
#include <vector>
#include <queue>
#include <string>
#include <iostream>
#include <aeffectx.h>
#if kVstVersion < 2400
#define OLD_VST_SDK
struct ERect
{
short top;
short left;
short bottom;
short right;
} ;
#endif
#include "lmms_basics.h"
#include "Midi.h"
#include "communication.h"
#include "IoHelper.h"
#include "VstSyncData.h"
#ifdef LMMS_BUILD_WIN32
#define USE_QT_SHMEM
#endif
#ifndef USE_QT_SHMEM
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#endif
using namespace std;
static VstHostLanguages hlang = LanguageEnglish;
static bool EMBED = false;
static bool EMBED_X11 = false;
static bool EMBED_WIN32 = false;
static bool HEADLESS = false;
class RemoteVstPlugin;
RemoteVstPlugin * __plugin = NULL;
HWND __MessageHwnd = NULL;
class RemoteVstPlugin : public RemotePluginClient
{
public:
#ifdef SYNC_WITH_SHM_FIFO
RemoteVstPlugin( key_t _shm_in, key_t _shm_out );
#else
RemoteVstPlugin( const char * socketPath );
#endif
virtual ~RemoteVstPlugin();
virtual bool processMessage( const message & _m );
void init( const std::string & _plugin_file );
void initEditor();
void showEditor();
void hideEditor();
void destroyEditor();
virtual void process( const sampleFrame * _in, sampleFrame * _out );
virtual void processMidiEvent( const MidiEvent& event, const f_cnt_t offset );
// set given sample-rate for plugin
virtual void updateSampleRate()
{
SuspendPlugin suspend( this );
pluginDispatch( effSetSampleRate, 0, 0,
NULL, (float) sampleRate() );
}
// set given buffer-size for plugin
virtual void updateBufferSize()
{
SuspendPlugin suspend( this );
pluginDispatch( effSetBlockSize, 0, bufferSize() );
}
void setResumed( bool resumed )
{
m_resumed = resumed;
pluginDispatch( effMainsChanged, 0, resumed ? 1 : 0 );
}
inline bool isResumed() const
{
return m_resumed;
}
inline bool isInitialized() const
{
return m_initialized;
}
// set given tempo
void setBPM( const bpm_t _bpm )
{
m_bpm = _bpm;
}
// determine VST-version the plugin uses
inline int pluginVersion()
{
return pluginDispatch( effGetVendorVersion );
}
// determine name of plugin
const char * pluginName();
// determine vendor of plugin
const char * pluginVendorString();
// determine product-string of plugin
const char * pluginProductString();
// determine name of current program
const char * programName();
// send name of current program back to host
void sendCurrentProgramName();
// do a complete parameter-dump and post it
void getParameterDump();
// read parameter-dump and set it for plugin
void setParameterDump( const message & _m );
// save settings chunk of plugin into file
void saveChunkToFile( const std::string & _file );
// restore settings chunk of plugin from file
void loadChunkFromFile( const std::string & _file, int _len );
// restore settings chunk of plugin from file
void loadPresetFile( const std::string & _file );
// sets given program index
void setProgram( int index );
// rotate current program by given offset
void rotateProgram( int offset );
// Load names of presets/programs
void getProgramNames();
// Save presets/programs
void savePreset( const std::string & _file );
// number of inputs
virtual int inputCount() const
{
if( m_plugin )
{
return m_plugin->numInputs;
}
return 0;
}
// number of outputs
virtual int outputCount() const
{
if( m_plugin )
{
return m_plugin->numOutputs;
}
return 0;
}
// has to be called as soon as input- or output-count changes
void updateInOutCount();
inline void lockShm()
{
pthread_mutex_lock( &m_shmLock );
}
inline bool tryLockShm()
{
return pthread_mutex_trylock( &m_shmLock ) == 0;
}
inline void unlockShm()
{
pthread_mutex_unlock( &m_shmLock );
}
inline bool isShmValid()
{
return m_shmValid;
}
inline void setShmIsValid( bool valid )
{
m_shmValid = valid;
}
inline bool isProcessing() const
{
return m_processing;
}
inline void setProcessing( bool processing )
{
m_processing = processing;
}
inline void queueMessage( const message & m ) {
m_messageList.push( m );
}
inline bool shouldGiveIdle() const
{
return m_shouldGiveIdle;
}
inline void setShouldGiveIdle( bool shouldGiveIdle )
{
m_shouldGiveIdle = shouldGiveIdle;
}
void idle();
void processUIThreadMessages();
static DWORD WINAPI processingThread( LPVOID _param );
static bool setupMessageWindow();
static DWORD WINAPI guiEventLoop();
static LRESULT CALLBACK wndProc( HWND hwnd, UINT uMsg,
WPARAM wParam, LPARAM lParam );
private:
enum GuiThreadMessages
{
None,
ProcessPluginMessage,
GiveIdle,
ClosePlugin
} ;
struct SuspendPlugin {
SuspendPlugin( RemoteVstPlugin * plugin ) :
m_plugin( plugin ),
m_resumed( plugin->isResumed() )
{
if( m_resumed ) { m_plugin->setResumed( false ); }
}
~SuspendPlugin()
{
if( m_resumed ) { m_plugin->setResumed( true ); }
}
private:
RemoteVstPlugin * m_plugin;
bool m_resumed;
};
// callback used by plugin for being able to communicate with it's host
static intptr_t hostCallback( AEffect * _effect, int32_t _opcode,
int32_t _index, intptr_t _value,
void * _ptr, float _opt );
bool load( const std::string & _plugin_file );
int pluginDispatch( int cmd, int param1 = 0, int param2 = 0,
void * p = NULL, float f = 0 )
{
if( m_plugin )
{
return m_plugin->dispatcher( m_plugin, cmd, param1, param2, p, f );
}
return 0;
}
std::string m_shortName;
HINSTANCE m_libInst;
AEffect * m_plugin;
HWND m_window;
intptr_t m_windowID;
int m_windowWidth;
int m_windowHeight;
bool m_initialized;
bool m_resumed;
bool m_processing;
std::queue<message> m_messageList;
bool m_shouldGiveIdle;
float * * m_inputs;
float * * m_outputs;
pthread_mutex_t m_shmLock;
bool m_shmValid;
typedef std::vector<VstMidiEvent> VstMidiEventList;
VstMidiEventList m_midiEvents;
bpm_t m_bpm;
double m_currentSamplePos;
int m_currentProgram;
// host to plugin synchronisation data structure
struct in
{
float lastppqPos;
float m_Timestamp;
} ;
in * m_in;
int m_shmID;
VstSyncData* m_vstSyncData;
} ;
#ifdef SYNC_WITH_SHM_FIFO
RemoteVstPlugin::RemoteVstPlugin( key_t _shm_in, key_t _shm_out ) :
RemotePluginClient( _shm_in, _shm_out ),
#else
RemoteVstPlugin::RemoteVstPlugin( const char * socketPath ) :
RemotePluginClient( socketPath ),
#endif
m_libInst( NULL ),
m_plugin( NULL ),
m_window( NULL ),
m_windowID( 0 ),
m_windowWidth( 0 ),
m_windowHeight( 0 ),
m_initialized( false ),
m_resumed( false ),
m_processing( false ),
m_messageList(),
m_shouldGiveIdle( false ),
m_inputs( NULL ),
m_outputs( NULL ),
m_shmLock(),
m_shmValid( false ),
m_midiEvents(),
m_bpm( 0 ),
m_currentSamplePos( 0 ),
m_currentProgram( -1 ),
m_in( NULL ),
m_shmID( -1 ),
m_vstSyncData( NULL )
{
pthread_mutex_init( &m_shmLock, NULL );
__plugin = this;
#ifndef USE_QT_SHMEM
key_t key;
if( ( key = ftok( VST_SNC_SHM_KEY_FILE, 'R' ) ) == -1 )
{
perror( "RemoteVstPlugin.cpp::ftok" );
}
else
{ // connect to shared memory segment
if( ( m_shmID = shmget( key, 0, 0 ) ) == -1 )
{
perror( "RemoteVstPlugin.cpp::shmget" );
}
else
{ // attach segment
m_vstSyncData = (VstSyncData *)shmat(m_shmID, 0, 0);
if( m_vstSyncData == (VstSyncData *)( -1 ) )
{
perror( "RemoteVstPlugin.cpp::shmat" );
}
}
}
#else
m_vstSyncData = RemotePluginClient::getQtVSTshm();
#endif
if( m_vstSyncData == NULL )
{
fprintf(stderr, "RemoteVstPlugin.cpp: "
"Failed to initialize shared memory for VST synchronization.\n"
" (VST-host synchronization will be disabled)\n");
m_vstSyncData = (VstSyncData*) malloc( sizeof( VstSyncData ) );
m_vstSyncData->isPlaying = true;
m_vstSyncData->timeSigNumer = 4;
m_vstSyncData->timeSigDenom = 4;
m_vstSyncData->ppqPos = 0;
m_vstSyncData->isCycle = false;
m_vstSyncData->hasSHM = false;
m_vstSyncData->m_sampleRate = sampleRate();
}
m_in = ( in* ) new char[ sizeof( in ) ];
m_in->lastppqPos = 0;
m_in->m_Timestamp = -1;
// process until we have loaded the plugin
while( 1 )
{
message m = receiveMessage();
processMessage( m );
if( m.id == IdVstLoadPlugin || m.id == IdQuit )
{
break;
}
}
}
RemoteVstPlugin::~RemoteVstPlugin()
{
destroyEditor();
setResumed( false );
pluginDispatch( effClose );
#ifndef USE_QT_SHMEM
// detach shared memory segment
if( shmdt( m_vstSyncData ) == -1)
{
if( __plugin->m_vstSyncData->hasSHM )
{
perror( "~RemoteVstPlugin::shmdt" );
}
if( m_vstSyncData != NULL )
{
delete m_vstSyncData;
m_vstSyncData = NULL;
}
}
#endif
if( m_libInst != NULL )
{
FreeLibrary( m_libInst );
m_libInst = NULL;
}
delete[] m_inputs;
delete[] m_outputs;
pthread_mutex_destroy( &m_shmLock );
}
bool RemoteVstPlugin::processMessage( const message & _m )
{
if (! EMBED)
{
switch( _m.id )
{
case IdShowUI:
showEditor();
return true;
case IdHideUI:
hideEditor();
return true;
case IdToggleUI:
if( m_window && IsWindowVisible( m_window ) )
{
hideEditor();
}
else
{
showEditor();
}
return true;
case IdIsUIVisible:
bool visible = m_window && IsWindowVisible( m_window );
sendMessage( message( IdIsUIVisible )
.addInt( visible ? 1 : 0 ) );
return true;
}
}
else if (EMBED && _m.id == IdShowUI)
{
ShowWindow( m_window, SW_SHOWNORMAL );
UpdateWindow( m_window );
return true;
}
switch( _m.id )
{
case IdVstLoadPlugin:
init( _m.getString() );
break;
case IdVstSetTempo:
setBPM( _m.getInt() );
break;
case IdVstSetLanguage:
hlang = static_cast<VstHostLanguages>( _m.getInt() );
break;
case IdVstGetParameterDump:
getParameterDump();
break;
case IdVstSetParameterDump:
setParameterDump( _m );
break;
case IdSaveSettingsToFile:
saveChunkToFile( _m.getString() );
sendMessage( IdSaveSettingsToFile );
break;
case IdLoadSettingsFromFile:
loadChunkFromFile( _m.getString( 0 ), _m.getInt( 1 ) );
sendMessage( IdLoadSettingsFromFile );
break;
case IdLoadPresetFile:
loadPresetFile( _m.getString( 0 ) );
sendMessage( IdLoadPresetFile );
break;
case IdVstSetProgram:
setProgram( _m.getInt( 0 ) );
sendMessage( IdVstSetProgram );
break;
case IdVstCurrentProgram:
sendMessage( message( IdVstCurrentProgram ).addInt( m_currentProgram ) );
break;
case IdVstRotateProgram:
rotateProgram( _m.getInt( 0 ) );
sendMessage( IdVstRotateProgram );
break;
case IdVstProgramNames:
getProgramNames();
break;
case IdSavePresetFile:
savePreset( _m.getString( 0 ) );
sendMessage( IdSavePresetFile );
break;
case IdVstSetParameter:
m_plugin->setParameter( m_plugin, _m.getInt( 0 ), _m.getFloat( 1 ) );
//sendMessage( IdVstSetParameter );
break;
case IdVstIdleUpdate:
{
int newCurrentProgram = pluginDispatch( effGetProgram );
if( newCurrentProgram != m_currentProgram )
{
m_currentProgram = newCurrentProgram;
sendCurrentProgramName();
}
break;
}
default:
return RemotePluginClient::processMessage( _m );
}
return true;
}
void RemoteVstPlugin::init( const std::string & _plugin_file )
{
if( load( _plugin_file ) == false )
{
sendMessage( IdVstFailedLoadingPlugin );
return;
}
updateInOutCount();
updateBufferSize();
updateSampleRate();
/* set program to zero */
/* i comment this out because it breaks dfx Geometer
* looks like we cant set programs for it
*
pluginDispatch( effSetProgram, 0, 0 ); */
// request rate and blocksize
setResumed( true );
debugMessage( "creating editor\n" );
initEditor();
debugMessage( "editor successfully created\n" );
// now post some information about our plugin
sendMessage( message( IdVstPluginWindowID ).addInt( m_windowID ) );
sendMessage( message( IdVstPluginEditorGeometry ).
addInt( m_windowWidth ).
addInt( m_windowHeight ) );
sendMessage( message( IdVstPluginName ).addString( pluginName() ) );
sendMessage( message( IdVstPluginVersion ).addInt( pluginVersion() ) );
sendMessage( message( IdVstPluginVendorString ).
addString( pluginVendorString() ) );
sendMessage( message( IdVstPluginProductString ).
addString( pluginProductString() ) );
sendMessage( message( IdVstParameterCount ).
addInt( m_plugin->numParams ) );
sendMessage( IdInitDone );
m_initialized = true;
}
static void close_check( FILE* fp )
{
if( fclose( fp ) )
{
perror( "close" );
}
}
void RemoteVstPlugin::initEditor()
{
if( HEADLESS || m_window || !( m_plugin->flags & effFlagsHasEditor ) )
{
return;
}
HMODULE hInst = GetModuleHandle( NULL );
if( hInst == NULL )
{
debugMessage( "initEditor(): can't get module handle\n" );
return;
}
DWORD dwStyle;
if (EMBED) {
dwStyle = WS_POPUP | WS_SYSMENU | WS_BORDER;
} else {
dwStyle = WS_OVERLAPPEDWINDOW & ~WS_MAXIMIZEBOX;
}
m_window = CreateWindowEx( WS_EX_APPWINDOW, "LVSL", pluginName(),
dwStyle,
0, 0, 10, 10, NULL, NULL, hInst, NULL );
if( m_window == NULL )
{
debugMessage( "initEditor(): cannot create editor window\n" );
return;
}
pluginDispatch( effEditOpen, 0, 0, m_window );
ERect * er;
pluginDispatch( effEditGetRect, 0, 0, &er );
m_windowWidth = er->right - er->left;
m_windowHeight = er->bottom - er->top;
RECT windowSize = { 0, 0, m_windowWidth, m_windowHeight };
AdjustWindowRect( &windowSize, dwStyle, false );
SetWindowPos( m_window, 0, 0, 0, windowSize.right - windowSize.left,
windowSize.bottom - windowSize.top, SWP_NOACTIVATE |
SWP_NOMOVE | SWP_NOZORDER );
pluginDispatch( effEditTop );
if (! EMBED) {
showEditor();
}
#ifdef LMMS_BUILD_LINUX
m_windowID = (intptr_t) GetProp( m_window, "__wine_x11_whole_window" );
#else
// 64-bit versions of Windows use 32-bit handles for interoperability
m_windowID = (intptr_t) m_window;
#endif
}
void RemoteVstPlugin::showEditor() {
if( !EMBED && !HEADLESS && m_window )
{
ShowWindow( m_window, SW_SHOWNORMAL );
}
}
void RemoteVstPlugin::hideEditor() {
if( !EMBED && !HEADLESS && m_window )
{
ShowWindow( m_window, SW_HIDE );
}
}
void RemoteVstPlugin::destroyEditor()
{
if( m_window == NULL )
{
return;
}
pluginDispatch( effEditClose );
// Destroying the window takes some time in Wine 1.8.5
DestroyWindow( m_window );
m_window = NULL;
}
bool RemoteVstPlugin::load( const std::string & _plugin_file )
{
if( ( m_libInst = LoadLibraryW( toWString(_plugin_file).c_str() ) ) == NULL )
{
// give VstPlugin class a chance to start 32 bit version of RemoteVstPlugin
if( GetLastError() == ERROR_BAD_EXE_FORMAT )
{
sendMessage( IdVstBadDllFormat );
}
return false;
}
typedef AEffect * ( __stdcall * mainEntryPointer )
( audioMasterCallback );
mainEntryPointer mainEntry = (mainEntryPointer)
GetProcAddress( m_libInst, "VSTPluginMain" );
if( mainEntry == NULL )
{
mainEntry = (mainEntryPointer)
GetProcAddress( m_libInst, "VstPluginMain" );
}
if( mainEntry == NULL )
{
mainEntry = (mainEntryPointer)
GetProcAddress( m_libInst, "main" );
}
if( mainEntry == NULL )
{
debugMessage( "could not find entry point\n" );
return false;
}
m_plugin = mainEntry( hostCallback );
if( m_plugin == NULL )
{
debugMessage( "mainEntry procedure returned NULL\n" );
return false;
}
if( m_plugin->magic != kEffectMagic )
{
debugMessage( "File is not a VST plugin\n" );
return false;
}
char id[5];
sprintf( id, "%c%c%c%c", ((char *)&m_plugin->uniqueID)[3],
((char *)&m_plugin->uniqueID)[2],
((char *)&m_plugin->uniqueID)[1],
((char *)&m_plugin->uniqueID)[0] );
id[4] = 0;
sendMessage( message( IdVstPluginUniqueID ).addString( id ) );
pluginDispatch( effOpen );
return true;
}
void RemoteVstPlugin::process( const sampleFrame * _in, sampleFrame * _out )
{
// first we gonna post all MIDI-events we enqueued so far
if( m_midiEvents.size() )
{
// since MIDI-events are not received immediately, we
// have to have them stored somewhere even after
// dispatcher-call, so we create static copies of the
// data and post them
#define MIDI_EVENT_BUFFER_COUNT 1024
static char eventsBuffer[sizeof( VstEvents ) + sizeof( VstMidiEvent * ) * MIDI_EVENT_BUFFER_COUNT];
static VstMidiEvent vme[MIDI_EVENT_BUFFER_COUNT];
VstEvents* events = (VstEvents *) eventsBuffer;
events->reserved = 0;
events->numEvents = m_midiEvents.size();
int idx = 0;
for( VstMidiEventList::iterator it = m_midiEvents.begin(); it != m_midiEvents.end(); ++it, ++idx )
{
memcpy( &vme[idx], &*it, sizeof( VstMidiEvent ) );
events->events[idx] = (VstEvent *) &vme[idx];
}
m_midiEvents.clear();
pluginDispatch( effProcessEvents, 0, 0, events );
}
// now we're ready to fetch sound from VST-plugin
if( !tryLockShm() )
{
return;
}
if( !isShmValid() )
{
unlockShm();
return;
}
for( int i = 0; i < inputCount(); ++i )
{
m_inputs[i] = &((float *) _in)[i * bufferSize()];
}
for( int i = 0; i < outputCount(); ++i )
{
m_outputs[i] = &((float *) _out)[i * bufferSize()];
memset( m_outputs[i], 0, bufferSize() * sizeof( float ) );
}
#ifdef OLD_VST_SDK
if( m_plugin->flags & effFlagsCanReplacing )
{
#endif
m_plugin->processReplacing( m_plugin, m_inputs, m_outputs,
bufferSize() );
#ifdef OLD_VST_SDK
}
else
{
m_plugin->process( m_plugin, m_inputs, m_outputs,
bufferSize() );
}
#endif
unlockShm();
m_currentSamplePos += bufferSize();
}
void RemoteVstPlugin::processMidiEvent( const MidiEvent& event, const f_cnt_t offset )
{
VstMidiEvent vme;
vme.type = kVstMidiType;
vme.byteSize = 24;
vme.deltaFrames = offset;
vme.flags = 0;
vme.detune = 0;
vme.noteLength = 0;
vme.noteOffset = 0;
vme.noteOffVelocity = 0;
vme.reserved1 = 0;
vme.reserved2 = 0;
vme.midiData[0] = event.type() + event.channel();
switch( event.type() )
{
case MidiPitchBend:
vme.midiData[1] = event.pitchBend() & 0x7f;
vme.midiData[2] = event.pitchBend() >> 7;
break;
// TODO: handle more special cases
default:
vme.midiData[1] = event.key();
vme.midiData[2] = event.velocity();
break;
}
vme.midiData[3] = 0;
m_midiEvents.push_back( vme );
}
const char * RemoteVstPlugin::pluginName()
{
static char buf[32];
buf[0] = 0;