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This commit is contained in:
Chris
2023-08-12 09:49:26 +02:00
parent 537fba98c4
commit 044f42374b
22 changed files with 3090 additions and 3216 deletions
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118
synth/midi_synth.h
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@@ -12,82 +12,78 @@ namespace trnr {
template <typename t_voice, typename t_sample>
class midi_synth : public voice_allocator<t_voice, t_sample> {
public:
midi_synth(int _n_voices)
: m_voices_active { false }
{
// checks whether template derives from ivoice
typedef t_voice assert_at_compile_time[is_convertible<t_voice>::value ? 1 : -1];
}
midi_synth(int _n_voices)
: m_voices_active {false}
{
// checks whether template derives from ivoice
typedef t_voice assert_at_compile_time[is_convertible<t_voice>::value ? 1 : -1];
}
void set_samplerate_blocksize(double _samplerate, int _block_size)
{
m_block_size = _block_size;
voice_allocator<t_voice, t_sample>::set_samplerate(_samplerate);
}
void set_samplerate_blocksize(double _samplerate, int _block_size)
{
m_block_size = _block_size;
voice_allocator<t_voice, t_sample>::set_samplerate(_samplerate);
}
void process_block(t_sample** _outputs, int _n_frames)
{
// sample accurate event handling based on the iPlug2 synth by Oli Larkin
if (m_voices_active || !m_event_queue.empty()) {
int block_size = m_block_size;
int samples_remaining = _n_frames;
int start_index = 0;
void process_block(t_sample** _outputs, int _n_frames)
{
// sample accurate event handling based on the iPlug2 synth by Oli Larkin
if (m_voices_active || !m_event_queue.empty()) {
int block_size = m_block_size;
int samples_remaining = _n_frames;
int start_index = 0;
while (samples_remaining > 0) {
while (samples_remaining > 0) {
if (samples_remaining < block_size)
block_size = samples_remaining;
if (samples_remaining < block_size) block_size = samples_remaining;
while (!m_event_queue.empty()) {
midi_event event = m_event_queue.front();
while (!m_event_queue.empty()) {
midi_event event = m_event_queue.front();
// we assume the messages are in chronological order. If we find one later than the current block we are done.
if (event.offset > start_index + block_size)
break;
// we assume the messages are in chronological order. If we find one later than the current block we
// are done.
if (event.offset > start_index + block_size) break;
// send performance messages to the voice allocator
// message offset is relative to the start of this process_samples() block
event.offset -= start_index;
voice_allocator<t_voice, t_sample>::add_event(event);
// send performance messages to the voice allocator
// message offset is relative to the start of this process_samples() block
event.offset -= start_index;
voice_allocator<t_voice, t_sample>::add_event(event);
m_event_queue.erase(m_event_queue.begin());
}
m_event_queue.erase(m_event_queue.begin());
}
voice_allocator<t_voice, t_sample>::process_samples(_outputs, start_index, block_size);
voice_allocator<t_voice, t_sample>::process_samples(_outputs, start_index, block_size);
samples_remaining -= block_size;
start_index += block_size;
}
samples_remaining -= block_size;
start_index += block_size;
}
m_voices_active = voice_allocator<t_voice, t_sample>::voices_active();
m_voices_active = voice_allocator<t_voice, t_sample>::voices_active();
flush_event_queue(_n_frames);
} else {
for (int s = 0; s < _n_frames; s++) {
_outputs[0][s] = 0.;
_outputs[1][s] = 0.;
}
}
}
flush_event_queue(_n_frames);
} else {
for (int s = 0; s < _n_frames; s++) {
_outputs[0][s] = 0.;
_outputs[1][s] = 0.;
}
}
}
void add_event(midi_event event)
{
if (event.type == midi_event_type::note_on)
m_voices_active = true;
void add_event(midi_event event)
{
if (event.type == midi_event_type::note_on) m_voices_active = true;
m_event_queue.push_back(event);
}
m_event_queue.push_back(event);
}
void flush_event_queue(int frames)
{
for (int i = 0; i < m_event_queue.size(); i++) {
m_event_queue.at(i).offset -= frames;
}
}
void flush_event_queue(int frames)
{
for (int i = 0; i < m_event_queue.size(); i++) { m_event_queue.at(i).offset -= frames; }
}
private:
std::vector<midi_event> m_event_queue;
int m_block_size;
bool m_voices_active;
std::vector<midi_event> m_event_queue;
int m_block_size;
bool m_voices_active;
};
}
} // namespace trnr