qzdoom/libraries/zmusic/mididevices/music_timidity_mididevice.cpp

251 lines
7.9 KiB
C++
Raw Normal View History

2016-03-01 15:47:10 +00:00
/*
** music_timidity_mididevice.cpp
** Provides access to TiMidity as a generic MIDI device.
**
**---------------------------------------------------------------------------
** Copyright 2008 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
// HEADER FILES ------------------------------------------------------------
#include "mididevice.h"
2016-03-01 15:47:10 +00:00
#include "timidity/timidity.h"
#include "timidity/playmidi.h"
#include "timidity/instrum.h"
#include "../../music_common/fileio.h"
2016-03-01 15:47:10 +00:00
// MACROS ------------------------------------------------------------------
// TYPES -------------------------------------------------------------------
// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
// EXTERNAL DATA DECLARATIONS ----------------------------------------------
// PRIVATE DATA DEFINITIONS ------------------------------------------------
//==========================================================================
//
// The actual device.
//
//==========================================================================
namespace Timidity { struct Renderer; }
class TimidityMIDIDevice : public SoftSynthMIDIDevice
{
void LoadInstruments(GUSConfig *config);
public:
TimidityMIDIDevice(GUSConfig *config, int samplerate);
~TimidityMIDIDevice();
int OpenRenderer();
void PrecacheInstruments(const uint16_t *instruments, int count);
int GetDeviceType() const override { return MDEV_GUS; }
protected:
Timidity::Renderer *Renderer;
2019-09-27 20:19:00 +00:00
std::shared_ptr<Timidity::Instruments> instruments; // The device needs to hold a reference to this while the renderer is in use.
void HandleEvent(int status, int parm1, int parm2);
void HandleLongEvent(const uint8_t *data, int len);
void ComputeOutput(float *buffer, int len);
};
2016-03-01 15:47:10 +00:00
// CODE --------------------------------------------------------------------
void TimidityMIDIDevice::LoadInstruments(GUSConfig *config)
{
if (config->dmxgus.size())
{
// Check if we got some GUS data before using it.
std::string ultradir = getenv("ULTRADIR");
if (ultradir.length() || config->gus_patchdir.length() != 0)
{
auto psreader = new MusicIO::FileSystemSoundFontReader("");
// The GUS put its patches in %ULTRADIR%/MIDI so we can try that
if (ultradir.length())
{
ultradir += "/midi";
psreader->add_search_path(ultradir.c_str());
}
// Load DMXGUS lump and patches from gus_patchdir
if (config->gus_patchdir.length() != 0) psreader->add_search_path(config->gus_patchdir.c_str());
config->instruments.reset(new Timidity::Instruments(psreader));
bool success = config->instruments->LoadDMXGUS(config->gus_memsize, (const char*)config->dmxgus.data(), config->dmxgus.size()) >= 0;
config->dmxgus.clear();
if (success)
{
config->loadedConfig = "DMXGUS";
return;
}
}
config->loadedConfig = "";
config->instruments.reset();
throw std::runtime_error("Unable to initialize DMXGUS for GUS MIDI device");
}
else if (config->reader)
{
config->loadedConfig = config->readerName;
config->instruments.reset(new Timidity::Instruments(config->reader));
bool err = config->instruments->LoadConfig() < 0;
config->reader = nullptr;
if (err)
{
config->instruments.reset();
config->loadedConfig = "";
throw std::runtime_error("Unable to initialize instruments for GUS MIDI device");
}
}
else if (config->instruments == nullptr)
{
throw std::runtime_error("No instruments set for GUS device");
}
2019-09-27 20:19:00 +00:00
instruments = config->instruments;
}
2016-03-01 15:47:10 +00:00
//==========================================================================
//
// TimidityMIDIDevice Constructor
//
//==========================================================================
TimidityMIDIDevice::TimidityMIDIDevice(GUSConfig *config, int samplerate)
: SoftSynthMIDIDevice(samplerate, 11025, 65535)
2016-03-01 15:47:10 +00:00
{
LoadInstruments(config);
2019-09-27 20:19:00 +00:00
Renderer = new Timidity::Renderer((float)SampleRate, config->midi_voices, instruments.get());
2016-03-01 15:47:10 +00:00
}
//==========================================================================
//
// TimidityMIDIDevice Destructor
//
//==========================================================================
TimidityMIDIDevice::~TimidityMIDIDevice()
{
Close();
if (Renderer != nullptr)
2016-03-01 15:47:10 +00:00
{
delete Renderer;
}
}
//==========================================================================
//
// TimidityMIDIDevice :: Open
//
// Returns 0 on success.
//
//==========================================================================
int TimidityMIDIDevice::OpenRenderer()
2016-03-01 15:47:10 +00:00
{
Renderer->Reset();
2019-09-28 08:04:09 +00:00
return 0;
2016-03-01 15:47:10 +00:00
}
//==========================================================================
//
// TimidityMIDIDevice :: PrecacheInstruments
//
// Each entry is packed as follows:
// Bits 0- 6: Instrument number
// Bits 7-13: Bank number
// Bit 14: Select drum set if 1, tone bank if 0
//
//==========================================================================
2017-03-08 14:52:09 +00:00
void TimidityMIDIDevice::PrecacheInstruments(const uint16_t *instruments, int count)
2016-03-01 15:47:10 +00:00
{
for (int i = 0; i < count; ++i)
{
Renderer->MarkInstrument((instruments[i] >> 7) & 127, instruments[i] >> 14, instruments[i] & 127);
}
Renderer->load_missing_instruments();
}
//==========================================================================
//
// TimidityMIDIDevice :: HandleEvent
//
//==========================================================================
void TimidityMIDIDevice::HandleEvent(int status, int parm1, int parm2)
{
Renderer->HandleEvent(status, parm1, parm2);
}
//==========================================================================
//
// TimidityMIDIDevice :: HandleLongEvent
//
//==========================================================================
void TimidityMIDIDevice::HandleLongEvent(const uint8_t *data, int len)
2016-03-01 15:47:10 +00:00
{
Renderer->HandleLongMessage(data, len);
}
//==========================================================================
//
// TimidityMIDIDevice :: ComputeOutput
//
//==========================================================================
void TimidityMIDIDevice::ComputeOutput(float *buffer, int len)
{
Renderer->ComputeOutput(buffer, len);
for (int i = 0; i < len * 2; i++) buffer[i] *= 0.7f;
2016-03-01 15:47:10 +00:00
}
//==========================================================================
//
//
//
//==========================================================================
MIDIDevice *CreateTimidityMIDIDevice(GUSConfig *config, int samplerate)
{
return new TimidityMIDIDevice(config, samplerate);
}