mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-12-20 13:35:51 +01:00
233 lines
6.9 KiB
C++
233 lines
6.9 KiB
C++
/*
|
|
* MidiInOut.h
|
|
* -----------
|
|
* Purpose: A plugin for sending and receiving MIDI data.
|
|
* Notes : (currently none)
|
|
* Authors: Johannes Schultz (OpenMPT Devs)
|
|
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
|
|
*/
|
|
|
|
|
|
#pragma once
|
|
|
|
#include "openmpt/all/BuildSettings.hpp"
|
|
|
|
#include "mpt/mutex/mutex.hpp"
|
|
#include "../../common/mptTime.h"
|
|
#include "../../soundlib/plugins/PlugInterface.h"
|
|
#include <rtmidi/RtMidi.h>
|
|
#include <array>
|
|
#include <deque>
|
|
|
|
|
|
OPENMPT_NAMESPACE_BEGIN
|
|
|
|
|
|
class MidiDevice
|
|
{
|
|
public:
|
|
using ID = decltype(RtMidiIn().getPortCount());
|
|
static constexpr ID NO_MIDI_DEVICE = ID(-1);
|
|
|
|
RtMidi &stream;
|
|
std::string name; // Charset::UTF8
|
|
ID index = NO_MIDI_DEVICE;
|
|
|
|
public:
|
|
MidiDevice(RtMidi &stream)
|
|
: stream(stream)
|
|
, name("<none>")
|
|
{ }
|
|
|
|
std::string GetPortName(ID port); // Charset::UTF8
|
|
};
|
|
|
|
|
|
class MidiInOut final : public IMidiPlugin
|
|
{
|
|
friend class MidiInOutEditor;
|
|
|
|
protected:
|
|
enum
|
|
{
|
|
kInputParameter = 0,
|
|
kOutputParameter = 1,
|
|
|
|
kNumPrograms = 1,
|
|
kNumParams = 2,
|
|
|
|
kNoDevice = MidiDevice::NO_MIDI_DEVICE,
|
|
kMaxDevices = 65536, // Should be a power of 2 to avoid rounding errors.
|
|
};
|
|
|
|
// MIDI queue entry with small storage optimiziation.
|
|
// This optimiziation is going to be used for all messages that OpenMPT can send internally,
|
|
// but SysEx messages received from other plugins may be longer.
|
|
class Message
|
|
{
|
|
public:
|
|
double m_time;
|
|
size_t m_size;
|
|
unsigned char *m_message = nullptr;
|
|
protected:
|
|
std::array<unsigned char, 32> m_msgSmall;
|
|
|
|
public:
|
|
Message(double time, const void *data, size_t size)
|
|
: m_time(time)
|
|
, m_size(size)
|
|
{
|
|
if(size > m_msgSmall.size())
|
|
m_message = new unsigned char[size];
|
|
else
|
|
m_message = m_msgSmall.data();
|
|
std::memcpy(m_message, data, size);
|
|
}
|
|
|
|
Message(const Message &) = delete;
|
|
Message & operator=(const Message &) = delete;
|
|
|
|
Message(double time, unsigned char msg) noexcept : Message(time, &msg, 1) { }
|
|
|
|
Message(Message &&other) noexcept
|
|
: m_time(other.m_time)
|
|
, m_size(other.m_size)
|
|
, m_message(other.m_message)
|
|
, m_msgSmall(other.m_msgSmall)
|
|
{
|
|
other.m_message = nullptr;
|
|
if(m_size <= m_msgSmall.size())
|
|
m_message = m_msgSmall.data();
|
|
|
|
}
|
|
|
|
~Message()
|
|
{
|
|
if(m_size > m_msgSmall.size())
|
|
delete[] m_message;
|
|
}
|
|
|
|
Message& operator= (Message &&other) noexcept
|
|
{
|
|
m_time = other.m_time;
|
|
m_size = other.m_size;
|
|
m_message = (m_size <= m_msgSmall.size()) ? m_msgSmall.data() : other.m_message;
|
|
m_msgSmall = other.m_msgSmall;
|
|
other.m_message = nullptr;
|
|
return *this;
|
|
}
|
|
};
|
|
|
|
std::string m_chunkData; // Storage for GetChunk
|
|
std::deque<Message> m_outQueue; // Latency-compensated output
|
|
std::vector<unsigned char> m_bufferedInput; // For receiving long SysEx messages
|
|
mpt::mutex m_mutex;
|
|
double m_nextClock = 0.0; // Remaining samples until next MIDI clock tick should be sent
|
|
double m_latency = 0.0; // User-adjusted latency in seconds
|
|
|
|
// I/O device settings
|
|
Util::MultimediaClock m_clock;
|
|
RtMidiIn m_midiIn;
|
|
RtMidiOut m_midiOut;
|
|
MidiDevice m_inputDevice;
|
|
MidiDevice m_outputDevice;
|
|
bool m_sendTimingInfo = true;
|
|
|
|
#ifdef MODPLUG_TRACKER
|
|
CString m_programName;
|
|
#endif
|
|
|
|
public:
|
|
static IMixPlugin* Create(VSTPluginLib &factory, CSoundFile &sndFile, SNDMIXPLUGIN *mixStruct);
|
|
MidiInOut(VSTPluginLib &factory, CSoundFile &sndFile, SNDMIXPLUGIN *mixStruct);
|
|
~MidiInOut();
|
|
|
|
// Translate a VST parameter to an RtMidi device ID
|
|
static MidiDevice::ID ParameterToDeviceID(float value)
|
|
{
|
|
return static_cast<MidiDevice::ID>(value * static_cast<float>(kMaxDevices)) - 1;
|
|
}
|
|
|
|
// Translate a RtMidi device ID to a VST parameter
|
|
static float DeviceIDToParameter(MidiDevice::ID index)
|
|
{
|
|
return static_cast<float>(index + 1) / static_cast<float>(kMaxDevices);
|
|
}
|
|
|
|
/////////////////////////////////////////////////
|
|
// Destroy the plugin
|
|
void Release() final { delete this; }
|
|
int32 GetUID() const final { return 'MMID'; }
|
|
int32 GetVersion() const final { return 2; }
|
|
void Idle() final { }
|
|
uint32 GetLatency() const final;
|
|
|
|
int32 GetNumPrograms() const final { return kNumPrograms; }
|
|
int32 GetCurrentProgram() final { return 0; }
|
|
void SetCurrentProgram(int32) final { }
|
|
|
|
PlugParamIndex GetNumParameters() const final { return kNumParams; }
|
|
void SetParameter(PlugParamIndex paramindex, PlugParamValue paramvalue) final;
|
|
PlugParamValue GetParameter(PlugParamIndex nIndex) final;
|
|
|
|
// Save parameters for storing them in a module file
|
|
void SaveAllParameters() final;
|
|
// Restore parameters from module file
|
|
void RestoreAllParameters(int32 program) final;
|
|
void Process(float *pOutL, float *pOutR, uint32 numFrames) final;
|
|
// Render silence and return the highest resulting output level
|
|
float RenderSilence(uint32) final{ return 0; }
|
|
bool MidiSend(uint32 midiCode) final;
|
|
bool MidiSysexSend(mpt::const_byte_span sysex) final;
|
|
void HardAllNotesOff() final;
|
|
// Modify parameter by given amount. Only needs to be re-implemented if plugin architecture allows this to be performed atomically.
|
|
void Resume() final;
|
|
void Suspend() final;
|
|
// Tell the plugin that there is a discontinuity between the previous and next render call (e.g. aftert jumping around in the module)
|
|
void PositionChanged() final;
|
|
void Bypass(bool bypass = true) final;
|
|
bool IsInstrument() const final { return true; }
|
|
bool CanRecieveMidiEvents() final { return true; }
|
|
// If false is returned, mixing this plugin can be skipped if its input are currently completely silent.
|
|
bool ShouldProcessSilence() final { return true; }
|
|
|
|
#ifdef MODPLUG_TRACKER
|
|
CString GetDefaultEffectName() final { return _T("MIDI Input / Output"); }
|
|
|
|
CString GetParamName(PlugParamIndex param) final;
|
|
CString GetParamLabel(PlugParamIndex) final{ return CString(); }
|
|
CString GetParamDisplay(PlugParamIndex param) final;
|
|
CString GetCurrentProgramName() final { return m_programName; }
|
|
void SetCurrentProgramName(const CString &name) final { m_programName = name; }
|
|
CString GetProgramName(int32) final { return m_programName; }
|
|
virtual CString GetPluginVendor() { return _T("OpenMPT Project"); }
|
|
|
|
bool HasEditor() const final { return true; }
|
|
protected:
|
|
CAbstractVstEditor *OpenEditor() final;
|
|
#endif
|
|
|
|
public:
|
|
int GetNumInputChannels() const final { return 0; }
|
|
int GetNumOutputChannels() const final { return 0; }
|
|
|
|
bool ProgramsAreChunks() const final { return true; }
|
|
ChunkData GetChunk(bool isBank) final;
|
|
void SetChunk(const ChunkData &chunk, bool isBank) final;
|
|
|
|
protected:
|
|
// Open a device for input or output.
|
|
void OpenDevice(MidiDevice::ID newDevice, bool asInputDevice);
|
|
// Close an active device.
|
|
void CloseDevice(MidiDevice &device);
|
|
|
|
static void InputCallback(double deltatime, std::vector<unsigned char> *message, void *userData) { static_cast<MidiInOut *>(userData)->InputCallback(deltatime, *message); }
|
|
void InputCallback(double deltatime, std::vector<unsigned char> &message);
|
|
|
|
// Calculate the current output timestamp
|
|
double GetOutputTimestamp() const;
|
|
};
|
|
|
|
|
|
OPENMPT_NAMESPACE_END
|