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soundplayer.cpp
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//////////////////////////////////////////////////////////////////////////////
// soundplayer --- an fmgon sound player
// Copyright (C) 2015 Katayama Hirofumi MZ. All Rights Reserved.
//////////////////////////////////////////////////////////////////////////////
#include "fmgon/fmgon.h"
#include "soundplayer.h"
#include "sound.h"
#include <map>
#include <cstdio>
#include <limits>
#define CLOCK 8000000
#define SAMPLERATE 44100
#define LFO_INTERVAL 150
class VskLFOCtrl {
int m_waveform;
int m_qperiod; // quarter of period
int m_count;
int m_phase; // 0, 1, 2 or 3
float m_adj_p_max;
float m_adj_v_max[4];
float m_adj_p_diff;
float m_adj_v_diff[4];
public:
float m_adj_p; // for pitch
float m_adj_v[4]; // for volume
public:
VskLFOCtrl() {
m_adj_p = 0;
memset(m_adj_v_diff, 0, sizeof(m_adj_v_diff));
}
void init_for_timbre(YM2203_Timbre *p_timbre) {
int i;
m_waveform = p_timbre->waveForm;
if (p_timbre->speed) {
m_qperiod = 900 * LFO_INTERVAL / (4*p_timbre->speed);
} else {
m_qperiod = 0;
}
//m_count = 0;
m_phase = 0;
m_adj_p_max = p_timbre->pmd * (float)p_timbre->pms / 2.0f; // TBD
for (i = 0; i < 4; ++i) {
m_adj_v_max[i] =
p_timbre->amd * (float)p_timbre->ams[i] / 2; // TBD
}
init_for_phase(true);
}
void init_for_keyon(YM2203_Timbre *p_timbre) {
if (p_timbre->sync) {
m_phase = 0;
init_for_phase();
}
}
void increment() {
int i;
if (0 == m_qperiod) {
return;
}
m_count++;
if (m_count < m_qperiod) {
m_adj_p += m_adj_p_diff;
for (i = 0; i < 4; ++i) {
m_adj_v[i] += m_adj_v_diff[i];
}
} else {
m_phase = (m_phase + 1) & 3;
init_for_phase();
}
}
protected:
void init_for_phase(bool flag_first = false) {
int i;
m_count = 0;
if (flag_first) {
switch (m_waveform) {
case 0: // saw
m_adj_p = 0;
for (i = 0; i < 4; ++i) {
m_adj_v[i] = 0;
}
m_adj_p_diff = m_adj_p_max / (m_qperiod * 2);
for (i = 0; i < 4; ++i) {
m_adj_v_diff[i] = m_adj_v_max[i] / (m_qperiod * 2);
}
break;
case 1: // square
m_adj_p = -m_adj_p_max;
for (i = 0; i < 4; ++i) {
m_adj_v[i] = -m_adj_v_max[i];
}
m_adj_p_diff = 0;
for (i = 0; i < 4; ++i) {
m_adj_v_diff[i] = 0;
}
break;
case 2: // triangle
m_adj_p = 0;
for (i = 0; i < 4; ++i) {
m_adj_v[i] = 0;
}
m_adj_p_diff = m_adj_p_max / m_qperiod;
for (i = 0; i < 4; ++i) {
m_adj_v_diff[i] = m_adj_v_max[i] / m_qperiod;
}
break;
default: // sample and hold
//m_adj_p = m_adj_p_max * (rand() * 2.0 / RAND_MAX - 1);
//for (i = 0; i < 4; ++i) {
// m_adj_v[i] = m_adj_v_max[i] * (rand() * 2.0 / RAND_MAX - 1);
//}
m_adj_p_diff = 0;
for (i = 0; i < 4; ++i) {
m_adj_v_diff[i] = 0;
}
break;
}
}
switch (m_waveform) {
case 0: // saw
if (0 == m_phase) {
m_adj_p = 0;
for (i = 0; i < 4; ++i) {
m_adj_v[i] = 0;
}
} else if (2 == m_phase) {
m_adj_p = -m_adj_p;
for (i = 0; i < 4; ++i) {
m_adj_v[i] = -m_adj_v[i];
}
}
break;
case 1: // square
if (0 == (m_phase & 1)) {
m_adj_p = -m_adj_p;
for (i = 0; i < 4; ++i) {
m_adj_v[i] = -m_adj_v[i];
}
}
break;
case 2: // triangle
if (0 == m_phase) {
m_adj_p = 0;
for (i = 0; i < 4; ++i) {
m_adj_v[i] = 0;
}
} else if (1 == (m_phase & 1)) {
m_adj_p_diff = -m_adj_p_diff;
for (i = 0; i < 4; ++i) {
m_adj_v_diff[i] = -m_adj_v_diff[i];
}
}
break;
default: // sample and hold
if (0 == (m_phase & 1)) {
m_adj_p = float(
m_adj_p_max * (rand() * 2.0 / RAND_MAX - 1)
);
for (i = 0; i < 4; ++i) {
m_adj_v[i] = float(
m_adj_v_max[i] * (rand() * 2.0 / RAND_MAX - 1)
);
}
}
break;
}
}
}; // class VskLFOCtrl
//////////////////////////////////////////////////////////////////////////////
float VskNote::get_sec(int tempo, float length) const {
float sec;
assert(tempo != 0);
// NOTE: 24 is the length of a quarter note
if (m_dot) {
sec = length * (60.0f * 1.5f / 24.0f) / tempo;
} else {
sec = length * (60.0f / 24.0f) / tempo;
}
return sec;
} // VskNote::get_sec
void VskNote::set_key_from_char(char ch) {
if (ch == 'R' || ch == 0) {
m_key = KEY_REST;
}
else if (ch == '@') {
m_key = KEY_TONE;
}
else if (ch == 'W') {
m_key = KEY_SPECIAL_REST;
}
else if (ch == 'Y') {
m_key = KEY_REG;
}
else if (ch == 'M') {
m_key = KEY_ENVELOP_INTERVAL;
}
else if (ch == 'S') {
m_key = KEY_ENVELOP_TYPE;
}
else if (ch == 'X') {
m_key = KEY_SPECIAL_ACTION;
} else {
static const char keys[KEY_NUM + 1] = "C+D+EF+G+A+B";
const char *ptr = strchr(keys, ch);
assert(ptr != NULL);
assert(*ptr == ch);
m_key = int(ptr - keys);
switch (m_sign) {
case '+': case '#':
if (m_key == KEY_B) {
m_key = KEY_C;
} else {
++m_key;
}
break;
case '-':
if (m_key == KEY_C) {
m_key = KEY_B;
} else {
--m_key;
}
break;
default:
break;
}
}
} // VskNote::char_to_key
//////////////////////////////////////////////////////////////////////////////
void VskPhrase::destroy() {
} // VskPhrase::destroy
void VskPhrase::schedule_special_action(float gate, int action_no) {
m_gate_to_special_action_no.push_back(std::make_pair(gate, action_no));
}
void VskPhrase::execute_special_actions() {
assert(m_player);
// 残りの未実行のアクション数を設定
// 入力が"CDX0X1"などで再生完了後にスペシャルアクションを実行する延長時間の調整に使用される
m_remaining_actions = m_gate_to_special_action_no.size();
// アクションがない場合は何もしない
if (m_remaining_actions == 0) {
return;
}
// gateに合わせてスペシャルアクションを実行するための制御スレッド
unboost::thread(
[this](int dummy) {
// 前回実行したスペシャルアクションのgateを保持、初期値は0
// gate、last_gateは秒を小数点で表しています
float last_gate = 0;
// gateが同じスペシャルアクションをまとめる
std::map<float, std::vector<int>> gate_to_actions;
for (const auto& pair : m_gate_to_special_action_no) {
gate_to_actions[pair.first].push_back(pair.second);
}
// スペシャルアクションをgateごとにまとめて実行
// std::mapのiteratorはkeyの昇順でiterateするし、
// アクションも順番通りでvectorに追加したため、順番は保証されている
for (auto& pair2 : gate_to_actions) {
auto gate = pair2.first;
auto action_numbers = pair2.second;
// 前のgateからの待機時間を計算して待機
if (!m_player->wait_for_stop(uint32_t(gate - last_gate) * 1000)) {
// 待機中にstopされた場合、ループを抜ける
break;
}
// スペシャルアクションを別のスレッドで実行
unboost::thread(
[this, action_numbers](int dummy) {
// gateが同じスペシャルアクションをループ実行
for (const auto& action_no : action_numbers) {
m_player->do_special_action(action_no);
}
},
0
).detach();
// 残りの未実行のアクション数をを減らす
m_remaining_actions -= action_numbers.size();
last_gate = gate;
}
},
0
).detach();
}
void VskPhrase::rescan_notes() {
std::vector<VskNote> new_notes;
for (size_t i = 0; i < m_notes.size(); ++i) {
if (m_notes[i].m_and) {
size_t k = 0;
float length = 0, sec = 0;
do {
length += m_notes[i + k].m_length;
sec += m_notes[i + k].m_sec;
++k;
} while (m_notes[i + k].m_and);
length += m_notes[i + k].m_length;
sec += m_notes[i + k].m_sec;
m_notes[i].m_length = length;
m_notes[i].m_sec = sec;
new_notes.push_back(m_notes[i]);
i += k;
} else {
new_notes.push_back(m_notes[i]);
}
}
m_notes = std::move(new_notes);
} // VskPhrase::rescan_notes
void VskPhrase::calc_total() {
float gate = 0;
for (auto& note : m_notes) {
note.m_gate = gate;
gate += note.m_sec;
}
m_goal = gate;
} // VskPhrase::calc_total
void VskPhrase::realize(VskSoundPlayer *player, FM_SAMPLETYPE*& data, size_t& data_size) {
destroy();
calc_total();
rescan_notes();
m_player = player;
// Initialize YM2203
YM2203& ym = player->m_ym;
ym.init(CLOCK, SAMPLERATE);
ym.reset();
// Allocate the wave data
uint32_t isample = 0;
auto size = uint32_t((m_goal + 1) * SAMPLERATE * 2);
if (size % 2 != 0) // It fails when size was an odd number
++size;
data_size = size * sizeof(FM_SAMPLETYPE);
data = new FM_SAMPLETYPE[size];
std::memset(&data[0], 0, size * sizeof(FM_SAMPLETYPE));
if (m_setting.m_fm) { // FM sound?
int ch = FM_CH1;
auto& timbre = m_setting.m_timbre;
timbre.set(ym2203_tone_table[0]);
ym.set_timbre(ch, &timbre);
VskLFOCtrl lc;
for (auto& note : m_notes) { // For each note
if (note.m_key == KEY_TONE) { // Tone change?
const auto new_tone = note.m_data;
assert((0 <= new_tone) && (new_tone < NUM_TONES));
timbre.set(ym2203_tone_table[new_tone]);
ym.set_timbre(ch, &timbre);
lc.init_for_timbre(&timbre);
continue;
}
if (note.m_key == KEY_REG) { // Register?
m_player->write_reg(note.m_reg, note.m_data);
continue;
}
if (note.m_key == KEY_ENVELOP_INTERVAL) {
auto interval = note.m_data;
m_player->write_reg(ADDR_SSG_ENV_FREQ_L, (interval & 0xFF));
m_player->write_reg(ADDR_SSG_ENV_FREQ_H, ((interval >> 8) & 0xFF));
continue;
}
if (note.m_key == KEY_ENVELOP_TYPE) {
auto type = note.m_data;
m_player->write_reg(ADDR_SSG_ENV_TYPE, (type & 0x0F));
continue;
}
if (note.m_key != KEY_SPECIAL_REST) { // Not special rest?
// do key on
if (note.m_key != KEY_REST) { // Has key?
ym.set_pitch(ch, note.m_octave, note.m_key);
ym.set_volume(ch, int(note.m_volume));
ym.note_on(ch);
}
lc.init_for_keyon(&timbre);
}
// render sound
auto sec = note.m_sec * note.m_quantity / 8.0f;
auto nsamples = int(SAMPLERATE * sec);
int unit;
while (nsamples) {
unit = SAMPLERATE / LFO_INTERVAL;
if (unit > nsamples) {
unit = nsamples;
}
ym.mix(&data[isample * 2], unit);
isample += unit;
if (note.m_key != KEY_REST && note.m_key != KEY_SPECIAL_REST) {
lc.increment();
int adj[4] = {
int(lc.m_adj_v[0]), int(lc.m_adj_v[1]),
int(lc.m_adj_v[2]), int(lc.m_adj_v[3]),
};
ym.set_volume(ch, int(note.m_volume), adj);
ym.set_pitch(ch, note.m_octave, note.m_key, int(lc.m_adj_p));
}
nsamples -= unit;
}
ym.count(uint32_t(sec * 1000 * 1000));
isample += nsamples;
sec = note.m_sec * (8.0f - note.m_quantity) / 8.0f;
nsamples = int(SAMPLERATE * sec);
if (note.m_key != KEY_SPECIAL_REST) {
// do key off
ym.note_off(ch);
}
unit = SAMPLERATE;
if (unit > nsamples) {
unit = nsamples;
}
ym.mix(&data[isample * 2], unit);
ym.count(uint32_t(sec * 1000 * 1000));
isample += nsamples;
}
} else { // SSG sound?
int ch = SSG_CH_A;
ym.set_tone_or_noise(ch, TONE_MODE);
for (auto& note : m_notes) {
if (note.m_key == KEY_SPECIAL_ACTION) { // Special action?
schedule_special_action(note.m_gate, note.m_data);
continue;
}
if (note.m_key == KEY_REG) { // Register?
m_player->write_reg(note.m_reg, note.m_data);
continue;
}
if (note.m_key == KEY_ENVELOP_INTERVAL) {
auto interval = note.m_data;
m_player->write_reg(ADDR_SSG_ENV_FREQ_L, (interval & 0xFF));
m_player->write_reg(ADDR_SSG_ENV_FREQ_H, ((interval >> 8) & 0xFF));
continue;
}
if (note.m_key == KEY_ENVELOP_TYPE) {
auto type = note.m_data;
m_player->write_reg(ADDR_SSG_ENV_TYPE, (type & 0x0F));
continue;
}
// do key on
if (note.m_key != KEY_REST && note.m_key != KEY_SPECIAL_REST) {
ym.set_pitch(ch, note.m_octave, note.m_key);
ym.set_volume(ch, int(note.m_volume));
ym.note_on(ch);
}
// render sound
auto sec = note.m_sec * note.m_quantity / 8.0f;
auto nsamples = int(SAMPLERATE * sec);
ym.mix(&data[isample * 2], nsamples);
ym.count(uint32_t(sec * 1000 * 1000));
isample += nsamples;
sec = note.m_sec * (8.0f - note.m_quantity) / 8.0f;
nsamples = int(SAMPLERATE * sec);
if (note.m_key != KEY_SPECIAL_REST) {
// do key off
ym.note_off(ch);
}
ym.mix(&data[isample * 2], nsamples);
ym.count(uint32_t(sec * 1000 * 1000));
isample += nsamples;
}
}
} // VskPhrase::realize
//////////////////////////////////////////////////////////////////////////////
#define WAV_HEADER_SIZE 44
static uint8_t* get_wav_header(uint32_t data_size, uint32_t clock, uint32_t sample_rate) {
// リニアPCM16ビット（モノラル）
static uint8_t wav_header_template[WAV_HEADER_SIZE] = {
0x52, 0x49, 0x46, 0x46, // 'RIFF'
0x00, 0x00, 0x00, 0x00, // RIFFチャンクのサイズ(size + 12 + 16 + 8)
0x57, 0x41, 0x56, 0x45, // 'WAVE'
0x66, 0x6D, 0x74, 0x20, // 'fmt'
0x10, 0x00, 0x00, 0x00, // fmtチャンクのバイト数 = 16(リニアPCM)
0x01, 0x00, // フォーマット = 1(非圧縮PCM)
0x01, 0x00, // チャネル数 = 1 (モノラル)
0x00, 0x00, 0x00, 0x00, // サンプリング周波数 = sample_rate
0x00, 0x7D, 0x00, 0x00, // バイト/秒 = 32000
0x02, 0x00, // ブロックサイズ = 16bit x 1(モノラル) = 2byte
0x10, 0x00, // ビット/サンプル = 16
0x64, 0x61, 0x74, 0x61, // 'data'
0x00, 0x00, 0x00, 0x00 // size (データバイト数)
};
uint32_t riff_size = data_size + WAV_HEADER_SIZE - 8;
(uint32_t&)(wav_header_template[4]) = riff_size;
(uint32_t&)(wav_header_template[24]) = sizeof(uint16_t) * sample_rate;
(uint32_t&)(wav_header_template[28]) = clock;
(uint32_t&)(wav_header_template[40]) = data_size;
return wav_header_template;
}
bool VskSoundPlayer::wait_for_stop(uint32_t milliseconds) {
return m_stopping_event.wait_for_event(milliseconds);
}
bool VskSoundPlayer::play_and_wait(VskScoreBlock& block, uint32_t milliseconds) {
play(block);
return wait_for_stop(milliseconds);
}
bool VskSoundPlayer::generate_pcm_raw(VskScoreBlock& block, std::vector<FM_SAMPLETYPE>& samples) {
std::vector<FM_SAMPLETYPE *> raw_data;
std::vector<size_t> data_sizes;
// realize phrases
for (auto& phrase : block) {
if (phrase) {
FM_SAMPLETYPE *data;
size_t data_size;
phrase->realize(this, data, data_size);
raw_data.push_back(data);
data_sizes.push_back(data_size);
}
}
size_t data_size = 0;
for (size_t i = 0; i < raw_data.size(); ++i) {
if (data_size < data_sizes[i])
data_size = data_sizes[i];
}
size_t num_samples = data_size / sizeof(FM_SAMPLETYPE);
samples.resize(num_samples);
for (size_t isample = 0; isample < num_samples; ++isample) {
// mixing
int32_t value = 0;
for (size_t i = 0; i < raw_data.size(); ++i) {
if (isample < data_sizes[i] / sizeof(FM_SAMPLETYPE))
value += raw_data[i][isample];
}
// clipping value
if (value < std::numeric_limits<FM_SAMPLETYPE>::min())
value = std::numeric_limits<FM_SAMPLETYPE>::min();
else if (value > std::numeric_limits<FM_SAMPLETYPE>::max())
value = std::numeric_limits<FM_SAMPLETYPE>::max();
if (isample < data_size)
samples[isample] = value;
else
samples[isample] = 0;
}
for (auto entry : raw_data) {
delete[] entry;
}
return true;
}
bool VskSoundPlayer::save_as_wav(VskScoreBlock& block, const wchar_t *filename) {
std::vector<FM_SAMPLETYPE> samples;
generate_pcm_raw(block, samples);
size_t data_size = samples.size() * sizeof(FM_SAMPLETYPE);
FILE *fout = _wfopen(filename, L"wb");
if (!fout)
return false;
auto wav_header = get_wav_header(data_size, CLOCK, SAMPLERATE);
std::fwrite(wav_header, WAV_HEADER_SIZE, 1, fout);
std::fwrite(samples.data(), data_size, 1, fout);
std::fclose(fout);
return true;
}
void VskSoundPlayer::play(VskScoreBlock& block) {
generate_pcm_raw(block, m_samples);
vsk_sound_play(m_samples.data(), m_samples.size() * sizeof(FM_SAMPLETYPE));
} // VskSoundPlayer::play
void VskSoundPlayer::stop() {
m_playing_music = false;
m_stopping_event.pulse();
m_play_lock.lock();
m_melody_line.clear();
m_play_lock.unlock();
} // VskSoundPlayer::stop
void VskSoundPlayer::register_special_action(int action_no, VskSpecialActionFn fn)
{
m_action_no_to_special_action[action_no] = fn;
}
void VskSoundPlayer::do_special_action(int action_no)
{
auto fn = m_action_no_to_special_action[action_no];
if (fn)
(*fn)(action_no);
else
std::printf("special action %d\n", action_no);
}
//////////////////////////////////////////////////////////////////////////////