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