d99f23fb10
MIDI code will control volume via MIDI events thus the generated audio should not be affected by mixer sound volumes. The initial commit(s) ind4d045b117/13dc149dedadded it as music sound type. So, this seems to be a long standing issue.
294 lines
8.3 KiB
C++
294 lines
8.3 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "common/scummsys.h"
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#ifdef USE_FLUIDSYNTH
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#include "common/config-manager.h"
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#include "common/error.h"
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#include "common/system.h"
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#include "common/textconsole.h"
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#include "audio/musicplugin.h"
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#include "audio/mpu401.h"
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#include "audio/softsynth/emumidi.h"
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#include <fluidsynth.h>
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class MidiDriver_FluidSynth : public MidiDriver_Emulated {
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private:
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MidiChannel_MPU401 _midiChannels[16];
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fluid_settings_t *_settings;
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fluid_synth_t *_synth;
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int _soundFont;
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int _outputRate;
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protected:
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// Because GCC complains about casting from const to non-const...
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void setInt(const char *name, int val);
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void setNum(const char *name, double num);
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void setStr(const char *name, const char *str);
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void generateSamples(int16 *buf, int len);
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public:
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MidiDriver_FluidSynth(Audio::Mixer *mixer);
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int open();
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void close();
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void send(uint32 b);
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MidiChannel *allocateChannel();
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MidiChannel *getPercussionChannel();
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// AudioStream API
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bool isStereo() const { return true; }
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int getRate() const { return _outputRate; }
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};
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// MidiDriver method implementations
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MidiDriver_FluidSynth::MidiDriver_FluidSynth(Audio::Mixer *mixer)
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: MidiDriver_Emulated(mixer) {
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for (int i = 0; i < ARRAYSIZE(_midiChannels); i++) {
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_midiChannels[i].init(this, i);
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}
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// It ought to be possible to get FluidSynth to generate samples at
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// lower
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_outputRate = _mixer->getOutputRate();
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if (_outputRate < 22050)
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_outputRate = 22050;
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else if (_outputRate > 96000)
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_outputRate = 96000;
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}
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void MidiDriver_FluidSynth::setInt(const char *name, int val) {
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char *name2 = strdup(name);
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fluid_settings_setint(_settings, name2, val);
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free(name2);
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}
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void MidiDriver_FluidSynth::setNum(const char *name, double val) {
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char *name2 = strdup(name);
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fluid_settings_setnum(_settings, name2, val);
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free(name2);
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}
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void MidiDriver_FluidSynth::setStr(const char *name, const char *val) {
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char *name2 = strdup(name);
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char *val2 = strdup(val);
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fluid_settings_setstr(_settings, name2, val2);
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free(name2);
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free(val2);
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}
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int MidiDriver_FluidSynth::open() {
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if (_isOpen)
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return MERR_ALREADY_OPEN;
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if (!ConfMan.hasKey("soundfont"))
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error("FluidSynth requires a 'soundfont' setting");
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_settings = new_fluid_settings();
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// The default gain setting is ridiculously low - at least for me. This
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// cannot be fixed by ScummVM's volume settings because they can only
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// soften the sound, not amplify it, so instead we add an option to
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// adjust the gain of FluidSynth itself.
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double gain = (double)ConfMan.getInt("midi_gain") / 100.0;
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setNum("synth.gain", gain);
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setNum("synth.sample-rate", _outputRate);
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_synth = new_fluid_synth(_settings);
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if (ConfMan.getBool("fluidsynth_chorus_activate")) {
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fluid_synth_set_chorus_on(_synth, 1);
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int chorusNr = ConfMan.getInt("fluidsynth_chorus_nr");
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double chorusLevel = (double)ConfMan.getInt("fluidsynth_chorus_level") / 100.0;
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double chorusSpeed = (double)ConfMan.getInt("fluidsynth_chorus_speed") / 100.0;
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double chorusDepthMs = (double)ConfMan.getInt("fluidsynth_chorus_depth") / 10.0;
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Common::String chorusWaveForm = ConfMan.get("fluidsynth_chorus_waveform");
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int chorusType = FLUID_CHORUS_MOD_SINE;
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if (chorusWaveForm == "sine") {
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chorusType = FLUID_CHORUS_MOD_SINE;
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} else {
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chorusType = FLUID_CHORUS_MOD_TRIANGLE;
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}
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fluid_synth_set_chorus(_synth, chorusNr, chorusLevel, chorusSpeed, chorusDepthMs, chorusType);
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} else {
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fluid_synth_set_chorus_on(_synth, 0);
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}
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if (ConfMan.getBool("fluidsynth_reverb_activate")) {
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fluid_synth_set_reverb_on(_synth, 1);
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double reverbRoomSize = (double)ConfMan.getInt("fluidsynth_reverb_roomsize") / 100.0;
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double reverbDamping = (double)ConfMan.getInt("fluidsynth_reverb_damping") / 100.0;
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int reverbWidth = ConfMan.getInt("fluidsynth_reverb_width");
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double reverbLevel = (double)ConfMan.getInt("fluidsynth_reverb_level") / 100.0;
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fluid_synth_set_reverb(_synth, reverbRoomSize, reverbDamping, reverbWidth, reverbLevel);
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} else {
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fluid_synth_set_reverb_on(_synth, 0);
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}
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Common::String interpolation = ConfMan.get("fluidsynth_misc_interpolation");
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int interpMethod = FLUID_INTERP_4THORDER;
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if (interpolation == "none") {
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interpMethod = FLUID_INTERP_NONE;
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} else if (interpolation == "linear") {
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interpMethod = FLUID_INTERP_LINEAR;
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} else if (interpolation == "4th") {
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interpMethod = FLUID_INTERP_4THORDER;
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} else if (interpolation == "7th") {
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interpMethod = FLUID_INTERP_7THORDER;
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}
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fluid_synth_set_interp_method(_synth, -1, interpMethod);
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const char *soundfont = ConfMan.get("soundfont").c_str();
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_soundFont = fluid_synth_sfload(_synth, soundfont, 1);
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if (_soundFont == -1)
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error("Failed loading custom sound font '%s'", soundfont);
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MidiDriver_Emulated::open();
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_mixer->playStream(Audio::Mixer::kPlainSoundType, &_mixerSoundHandle, this, -1, Audio::Mixer::kMaxChannelVolume, 0, DisposeAfterUse::NO, true);
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return 0;
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}
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void MidiDriver_FluidSynth::close() {
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if (!_isOpen)
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return;
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_isOpen = false;
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_mixer->stopHandle(_mixerSoundHandle);
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if (_soundFont != -1)
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fluid_synth_sfunload(_synth, _soundFont, 1);
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delete_fluid_synth(_synth);
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delete_fluid_settings(_settings);
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}
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void MidiDriver_FluidSynth::send(uint32 b) {
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//byte param3 = (byte) ((b >> 24) & 0xFF);
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uint param2 = (byte) ((b >> 16) & 0xFF);
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uint param1 = (byte) ((b >> 8) & 0xFF);
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byte cmd = (byte) (b & 0xF0);
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byte chan = (byte) (b & 0x0F);
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switch (cmd) {
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case 0x80: // Note Off
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fluid_synth_noteoff(_synth, chan, param1);
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break;
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case 0x90: // Note On
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fluid_synth_noteon(_synth, chan, param1, param2);
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break;
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case 0xA0: // Aftertouch
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break;
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case 0xB0: // Control Change
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fluid_synth_cc(_synth, chan, param1, param2);
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break;
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case 0xC0: // Program Change
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fluid_synth_program_change(_synth, chan, param1);
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break;
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case 0xD0: // Channel Pressure
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break;
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case 0xE0: // Pitch Bend
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fluid_synth_pitch_bend(_synth, chan, (param2 << 7) | param1);
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break;
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case 0xF0: // SysEx
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// We should never get here! SysEx information has to be
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// sent via high-level semantic methods.
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warning("MidiDriver_FluidSynth: Receiving SysEx command on a send() call");
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break;
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default:
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warning("MidiDriver_FluidSynth: Unknown send() command 0x%02X", cmd);
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break;
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}
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}
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MidiChannel *MidiDriver_FluidSynth::allocateChannel() {
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for (int i = 0; i < ARRAYSIZE(_midiChannels); i++) {
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if (i != 9 && _midiChannels[i].allocate())
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return &_midiChannels[i];
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}
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return NULL;
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}
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MidiChannel *MidiDriver_FluidSynth::getPercussionChannel() {
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return &_midiChannels[9];
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}
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void MidiDriver_FluidSynth::generateSamples(int16 *data, int len) {
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fluid_synth_write_s16(_synth, len, data, 0, 2, data, 1, 2);
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}
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// Plugin interface
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class FluidSynthMusicPlugin : public MusicPluginObject {
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public:
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const char *getName() const {
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return "FluidSynth";
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}
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const char *getId() const {
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return "fluidsynth";
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}
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MusicDevices getDevices() const;
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Common::Error createInstance(MidiDriver **mididriver, MidiDriver::DeviceHandle = 0) const;
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};
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MusicDevices FluidSynthMusicPlugin::getDevices() const {
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MusicDevices devices;
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devices.push_back(MusicDevice(this, "", MT_GM));
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return devices;
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}
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Common::Error FluidSynthMusicPlugin::createInstance(MidiDriver **mididriver, MidiDriver::DeviceHandle) const {
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*mididriver = new MidiDriver_FluidSynth(g_system->getMixer());
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return Common::kNoError;
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}
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//#if PLUGIN_ENABLED_DYNAMIC(FLUIDSYNTH)
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//REGISTER_PLUGIN_DYNAMIC(FLUIDSYNTH, PLUGIN_TYPE_MUSIC, FluidSynthMusicPlugin);
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//#else
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REGISTER_PLUGIN_STATIC(FLUIDSYNTH, PLUGIN_TYPE_MUSIC, FluidSynthMusicPlugin);
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//#endif
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#endif
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