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287 lines
No EOL
8.6 KiB
C++
287 lines
No EOL
8.6 KiB
C++
/*
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** music_wildmidi_mididevice.cpp
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** Provides access to WildMidi as a generic MIDI device.
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**
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**---------------------------------------------------------------------------
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** Copyright 2015 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 "mididevice.h"
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#include "zmusic/zmusic_internal.h"
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#ifdef HAVE_WILDMIDI
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#include "wildmidi/wildmidi_lib.h"
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// MACROS ------------------------------------------------------------------
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// TYPES -------------------------------------------------------------------
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WildMidiConfig wildMidiConfig;
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// WildMidi implementation of a MIDI device ---------------------------------
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class WildMIDIDevice : public SoftSynthMIDIDevice
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{
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public:
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WildMIDIDevice(int samplerate);
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~WildMIDIDevice();
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int OpenRenderer() override;
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void PrecacheInstruments(const uint16_t *instruments, int count) override;
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std::string GetStats() override;
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int GetDeviceType() const override { return MDEV_WILDMIDI; }
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protected:
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WildMidi::Renderer *Renderer;
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std::shared_ptr<WildMidi::Instruments> instruments;
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void HandleEvent(int status, int parm1, int parm2) override;
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void HandleLongEvent(const uint8_t *data, int len) override;
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void ComputeOutput(float *buffer, int len) override;
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void ChangeSettingInt(const char *opt, int set) override;
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void LoadInstruments();
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};
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// CODE --------------------------------------------------------------------
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void WildMIDIDevice::LoadInstruments()
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{
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if (wildMidiConfig.reader)
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{
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wildMidiConfig.loadedConfig = wildMidiConfig.readerName;
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wildMidiConfig.instruments.reset(new WildMidi::Instruments(wildMidiConfig.reader, SampleRate));
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bool success = wildMidiConfig.instruments->LoadConfig(wildMidiConfig.readerName.c_str());
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wildMidiConfig.reader = nullptr;
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if (!success)
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{
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wildMidiConfig.instruments.reset();
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wildMidiConfig.loadedConfig = "";
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throw std::runtime_error("Unable to initialize instruments for WildMidi device");
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}
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}
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else if (wildMidiConfig.instruments == nullptr)
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{
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throw std::runtime_error("No instruments set for WildMidi device");
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}
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instruments = wildMidiConfig.instruments;
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if (instruments->LoadConfig(nullptr) < 0)
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{
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throw std::runtime_error("Unable to load instruments set for WildMidi device");
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}
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}
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//==========================================================================
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//
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// WildMIDIDevice Constructor
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//
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//==========================================================================
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WildMIDIDevice::WildMIDIDevice(int samplerate)
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:SoftSynthMIDIDevice(samplerate, 11025, 65535)
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{
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Renderer = NULL;
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LoadInstruments();
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Renderer = new WildMidi::Renderer(instruments.get());
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int flags = 0;
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if (wildMidiConfig.enhanced_resampling) flags |= WildMidi::WM_MO_ENHANCED_RESAMPLING;
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if (wildMidiConfig.reverb) flags |= WildMidi::WM_MO_REVERB;
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Renderer->SetOption(WildMidi::WM_MO_ENHANCED_RESAMPLING | WildMidi::WM_MO_REVERB, flags);
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}
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//==========================================================================
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//
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// WildMIDIDevice Destructor
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//
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//==========================================================================
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WildMIDIDevice::~WildMIDIDevice()
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{
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Close();
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if (Renderer != NULL)
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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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// WildMIDIDevice :: 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 WildMIDIDevice::OpenRenderer()
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{
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return 0; // This one's a no-op
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}
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//==========================================================================
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//
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// WildMIDIDevice :: 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 WildMIDIDevice::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->LoadInstrument((instruments[i] >> 7) & 127, instruments[i] >> 14, instruments[i] & 127);
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}
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}
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//==========================================================================
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//
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// WildMIDIDevice :: HandleEvent
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//
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//==========================================================================
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void WildMIDIDevice::HandleEvent(int status, int parm1, int parm2)
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{
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Renderer->ShortEvent(status, parm1, parm2);
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}
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//==========================================================================
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//
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// WildMIDIDevice :: HandleLongEvent
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//
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//==========================================================================
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void WildMIDIDevice::HandleLongEvent(const uint8_t *data, int len)
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{
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Renderer->LongEvent(data, len);
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}
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//==========================================================================
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//
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// WildMIDIDevice :: ComputeOutput
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//
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//==========================================================================
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void WildMIDIDevice::ComputeOutput(float *buffer, int len)
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{
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Renderer->ComputeOutput(buffer, len);
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}
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//==========================================================================
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//
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// WildMIDIDevice :: GetStats
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//
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//==========================================================================
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std::string WildMIDIDevice::GetStats()
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{
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char out[20];
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snprintf(out, 20, "%3d voices", Renderer->GetVoiceCount());
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return out;
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}
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//==========================================================================
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//
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// WildMIDIDevice :: ChangeSettingInt
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//
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//==========================================================================
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void WildMIDIDevice::ChangeSettingInt(const char *opt, int set)
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{
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int option;
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if (!stricmp(opt, "wildmidi.reverb")) option = WildMidi::WM_MO_REVERB;
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else if (!stricmp(opt, "wildmidi.resampling")) option = WildMidi::WM_MO_ENHANCED_RESAMPLING;
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else return;
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int setit = option * int(set);
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Renderer->SetOption(option, setit);
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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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bool WildMidi_SetupConfig(const char* args)
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{
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if (*args == 0) args = wildMidiConfig.config.c_str();
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if (stricmp(wildMidiConfig.loadedConfig.c_str(), args) == 0) return false; // aleady loaded
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MusicIO::SoundFontReaderInterface* reader = MusicIO::ClientOpenSoundFont(args, SF_GUS);
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if (!reader && MusicIO::fileExists(args))
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{
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reader = new MusicIO::FileSystemSoundFontReader(args, true);
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}
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if (reader == nullptr)
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{
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char error[80];
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snprintf(error, 80, "WildMidi: %s: Unable to load sound font\n", args);
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throw std::runtime_error(error);
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}
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wildMidiConfig.reader = reader;
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wildMidiConfig.readerName = args;
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return true;
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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 *CreateWildMIDIDevice(const char *Args, int samplerate)
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{
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WildMidi_SetupConfig(Args);
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return new WildMIDIDevice(samplerate);
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}
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#else
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MIDIDevice* CreateWildMIDIDevice(const char* Args, int samplerate)
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{
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throw std::runtime_error("WildMidi device not supported in this configuration");
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}
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#endif |