141 lines
2.5 KiB
C++
141 lines
2.5 KiB
C++
#include <stdlib.h>
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#include <string.h>
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#include "MSPlayer.h"
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MSPlayer::MSPlayer()
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{
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synth = 0;
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}
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MSPlayer::~MSPlayer()
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{
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shutdown();
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}
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void MSPlayer::set_synth(unsigned int synth_id)
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{
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shutdown();
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this->synth_id = synth_id;
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}
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void MSPlayer::set_bank(unsigned int bank_id)
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{
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shutdown();
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this->bank_id = bank_id;
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}
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void MSPlayer::set_extp(unsigned int extp)
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{
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shutdown();
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this->extp = extp;
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}
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void MSPlayer::send_event(uint32_t b)
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{
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if (!(b & 0x80000000))
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{
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synth->midi_write(b);
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}
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}
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void MSPlayer::render(float * out, unsigned long count)
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{
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float const scaler = 1.0f / 8192.0f;
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short buffer[512];
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while (count)
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{
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unsigned long todo = count > 256 ? 256 : count;
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synth->midi_generate(buffer, (unsigned int)todo);
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for (unsigned long i = 0; i < todo; ++i)
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{
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*out++ = buffer[i * 2 + 0] * scaler;
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*out++ = buffer[i * 2 + 1] * scaler;
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}
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count -= todo;
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}
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}
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void MSPlayer::shutdown()
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{
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delete synth;
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synth = 0;
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}
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bool MSPlayer::startup()
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{
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if (synth) return true;
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switch (synth_id)
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{
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default:
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case 0:
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synth = getsynth_doom();
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break;
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case 1:
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synth = getsynth_opl3w();
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break;
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}
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if (!synth) return false;
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if (!synth->midi_init((unsigned int)uSampleRate, bank_id, extp))
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return false;
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return true;
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}
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void MSPlayer::enum_synthesizers(enum_callback callback)
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{
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char buffer[512];
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const char * synth_name;
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midisynth * synth = getsynth_doom();
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synth_name = synth->midi_synth_name();
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unsigned int count = synth->midi_bank_count();
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unsigned int i;
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if (count > 1)
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{
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for (i = 0; i < count; ++i)
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{
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strcpy(buffer, synth_name);
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strcat(buffer, " ");
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strcat(buffer, synth->midi_bank_name(i));
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callback(0, i, buffer);
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}
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}
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else
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{
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callback(0, 0, synth_name);
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}
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delete synth;
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synth = getsynth_opl3w();
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synth_name = synth->midi_synth_name();
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count = synth->midi_bank_count();
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if (count > 1)
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{
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for (i = 0; i < count; ++i)
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{
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strcpy(buffer, synth_name);
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strcat(buffer, " ");
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strcat(buffer, synth->midi_bank_name(i));
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callback(0, i, buffer);
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}
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}
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else
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{
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callback(0, 0, synth_name);
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}
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delete synth;
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}
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