d590a03595
Improve rendering functions of Audio Unit player, and also fix looping for the Audio Unit player, and any other possible future players which use blocked decoding with timestamped events. Signed-off-by: Christopher Snowhill <kode54@gmail.com>
597 lines
16 KiB
C++
597 lines
16 KiB
C++
#include <assert.h>
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#include "MIDIPlayer.h"
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MIDIPlayer::MIDIPlayer() {
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uSamplesRemaining = 0;
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uSampleRate = 1000;
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uTimeCurrent = 0;
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uTimeEnd = 0;
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uTimeLoopStart = 0;
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initialized = false;
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}
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void MIDIPlayer::setSampleRate(unsigned long rate) {
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if(mStream.size()) {
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for(unsigned long i = 0; i < mStream.size(); i++) {
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mStream.at(i).m_timestamp = (unsigned long)((uint64_t)mStream.at(i).m_timestamp * rate / uSampleRate);
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}
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}
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if(uTimeCurrent) {
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uTimeCurrent = static_cast<unsigned long>(static_cast<uint64_t>(uTimeCurrent) * rate / uSampleRate);
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}
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if(uTimeEnd) {
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uTimeEnd = static_cast<unsigned long>(static_cast<uint64_t>(uTimeEnd) * rate / uSampleRate);
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}
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if(uTimeLoopStart) {
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uTimeLoopStart = static_cast<unsigned long>(static_cast<uint64_t>(uTimeLoopStart) * rate / uSampleRate);
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}
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uSampleRate = rate;
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shutdown();
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}
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bool MIDIPlayer::Load(const midi_container &midi_file, unsigned subsong, unsigned loop_mode, unsigned clean_flags) {
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assert(!mStream.size());
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midi_file.serialize_as_stream(subsong, mStream, mSysexMap, uStreamLoopStart, uStreamEnd, clean_flags);
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if(mStream.size()) {
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uStreamPosition = 0;
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uTimeCurrent = 0;
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uLoopMode = loop_mode;
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uTimeEnd = midi_file.get_timestamp_end(subsong, true) + 1000;
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if(uLoopMode & loop_mode_enable) {
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uTimeLoopStart = midi_file.get_timestamp_loop_start(subsong, true);
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unsigned long uTimeLoopEnd = midi_file.get_timestamp_loop_end(subsong, true);
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if(uTimeLoopStart != ~0UL || uTimeLoopEnd != ~0UL) {
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uLoopMode |= loop_mode_force;
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}
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if(uTimeLoopStart == ~0UL)
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uTimeLoopStart = 0;
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if(uTimeLoopEnd == ~0UL)
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uTimeLoopEnd = uTimeEnd - 1000;
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if((uLoopMode & loop_mode_force)) {
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unsigned long i;
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uint8_t nullByte = 0;
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std::vector<uint8_t> note_on;
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note_on.resize(128 * 16, nullByte);
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memset(¬e_on[0], 0, sizeof(note_on));
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for(i = 0; i < mStream.size() && i < uStreamEnd; i++) {
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uint32_t ev = mStream.at(i).m_event & 0x800000F0;
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if(ev == 0x90 || ev == 0x80) {
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const unsigned long port = (mStream.at(i).m_event & 0x7F000000) >> 24;
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const unsigned long ch = mStream.at(i).m_event & 0x0F;
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const unsigned long note = (mStream.at(i).m_event >> 8) & 0x7F;
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const bool on = (ev == 0x90) && (mStream.at(i).m_event & 0xFF0000);
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const unsigned long bit = 1 << port;
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note_on.at(ch * 128 + note) = (note_on.at(ch * 128 + note) & ~bit) | (bit * on);
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}
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}
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mStream.resize(i);
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uTimeEnd = uTimeLoopEnd - 1;
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if(uTimeEnd < mStream.at(i - 1).m_timestamp)
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uTimeEnd = mStream.at(i - 1).m_timestamp;
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for(unsigned long j = 0; j < 128 * 16; j++) {
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if(note_on.at(j)) {
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for(unsigned long k = 0; k < 8; k++) {
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if(note_on.at(j) & (1 << k)) {
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mStream.push_back(midi_stream_event(uTimeEnd, static_cast<uint32_t>((k << 24) + (j >> 7) + (j & 0x7F) * 0x100 + 0x90)));
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}
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}
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}
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}
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uTimeEnd = uTimeLoopEnd;
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}
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}
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if(uSampleRate != 1000) {
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unsigned long rate = static_cast<unsigned long>(uSampleRate);
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uSampleRate = 1000;
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setSampleRate(rate);
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}
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return true;
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}
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return false;
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}
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unsigned long MIDIPlayer::Play(float *out, unsigned long count) {
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assert(mStream.size());
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if(!startup()) return 0;
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unsigned long done = 0;
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const unsigned int needs_block_size = send_event_needs_time();
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unsigned int into_block = 0;
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// This should be a multiple of block size, and have leftover
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while(uSamplesRemaining && done < count) {
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unsigned long todo = uSamplesRemaining;
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if(todo > count - done) todo = count - done;
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if(needs_block_size && todo > needs_block_size)
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todo = needs_block_size;
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if(todo < needs_block_size) {
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uSamplesRemaining = 0;
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into_block = todo;
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break;
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}
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render(out + done * 2, todo);
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uSamplesRemaining -= todo;
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done += todo;
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uTimeCurrent += todo;
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}
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while(done < count) {
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unsigned long todo = uTimeEnd - uTimeCurrent;
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if(todo > count - done) todo = count - done;
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const unsigned long time_target = todo + uTimeCurrent;
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unsigned long stream_end = uStreamPosition;
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while(stream_end < mStream.size() && mStream.at(stream_end).m_timestamp < time_target) stream_end++;
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if(stream_end > uStreamPosition) {
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for(; uStreamPosition < stream_end; uStreamPosition++) {
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const midi_stream_event &me = mStream.at(uStreamPosition);
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ssize_t samples_todo = me.m_timestamp - uTimeCurrent - into_block;
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if(samples_todo > 0) {
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if(samples_todo > count - done) {
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uSamplesRemaining = samples_todo - (count - done);
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samples_todo = count - done;
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}
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if(!needs_block_size && samples_todo) {
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render(out + done * 2, samples_todo);
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done += samples_todo;
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uTimeCurrent += samples_todo;
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}
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if(uSamplesRemaining) {
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uSamplesRemaining += into_block;
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return done;
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}
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}
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if(needs_block_size) {
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if(samples_todo > 0) {
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into_block += samples_todo;
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while(into_block >= needs_block_size) {
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render(out + done * 2, needs_block_size);
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done += needs_block_size;
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into_block -= needs_block_size;
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uTimeCurrent += needs_block_size;
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}
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}
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send_event_time_filtered(me.m_event, into_block);
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} else
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send_event_filtered(me.m_event);
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}
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}
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if(done < count) {
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unsigned long samples_todo;
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if(uStreamPosition < mStream.size())
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samples_todo = mStream.at(uStreamPosition).m_timestamp;
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else
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samples_todo = uTimeEnd;
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samples_todo -= uTimeCurrent;
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if(needs_block_size)
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into_block = samples_todo;
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if(samples_todo > count - done)
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samples_todo = count - done;
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if(needs_block_size && samples_todo > needs_block_size)
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samples_todo = needs_block_size;
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if(samples_todo >= needs_block_size) {
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render(out + done * 2, samples_todo);
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done += samples_todo;
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uTimeCurrent += samples_todo;
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if(needs_block_size)
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into_block -= samples_todo;
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}
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}
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if(!needs_block_size)
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uTimeCurrent = time_target;
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if(time_target >= uTimeEnd) {
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if(uStreamPosition < mStream.size()) {
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for(; uStreamPosition < mStream.size(); uStreamPosition++) {
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if(needs_block_size)
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send_event_time_filtered(mStream.at(uStreamPosition).m_event, into_block);
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else
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send_event_filtered(mStream.at(uStreamPosition).m_event);
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}
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}
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if((uLoopMode & (loop_mode_enable | loop_mode_force)) == (loop_mode_enable | loop_mode_force)) {
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if(uStreamLoopStart == ~0) {
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uStreamPosition = 0;
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uTimeCurrent = 0;
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} else {
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uStreamPosition = uStreamLoopStart;
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uTimeCurrent = uTimeLoopStart;
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}
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} else
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break;
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}
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}
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uSamplesRemaining = into_block;
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return done;
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}
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void MIDIPlayer::Seek(unsigned long sample) {
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if(sample >= uTimeEnd) {
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if((uLoopMode & (loop_mode_enable | loop_mode_force)) == (loop_mode_enable | loop_mode_force)) {
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while(sample >= uTimeEnd) sample -= uTimeEnd - uTimeLoopStart;
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} else {
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sample = uTimeEnd;
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}
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}
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if(uTimeCurrent > sample) {
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uStreamPosition = 0;
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shutdown();
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}
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if(!startup()) return;
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uTimeCurrent = sample;
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std::vector<midi_stream_event> filler;
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unsigned long stream_start = uStreamPosition;
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for(; uStreamPosition < mStream.size() && mStream.at(uStreamPosition).m_timestamp < uTimeCurrent; uStreamPosition++)
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;
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if(uStreamPosition == mStream.size())
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uSamplesRemaining = uTimeEnd - uTimeCurrent;
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else
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uSamplesRemaining = mStream.at(uStreamPosition).m_timestamp - uTimeCurrent;
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if(uStreamPosition > stream_start) {
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filler.resize(uStreamPosition - stream_start);
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filler.assign(mStream.begin() + stream_start, mStream.begin() + uStreamPosition);
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unsigned long i, j;
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for(i = 0, stream_start = uStreamPosition - stream_start; i < stream_start; i++) {
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midi_stream_event &e = filler.at(i);
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if((e.m_event & 0x800000F0) == 0x90 && (e.m_event & 0xFF0000)) // note on
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{
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if((e.m_event & 0x0F) == 9) // hax
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{
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e.m_event = 0;
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continue;
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}
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const uint32_t m = (e.m_event & 0x7F00FF0F) | 0x80; // note off
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const uint32_t m2 = (e.m_event & 0x7F00FFFF); // also note off
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for(j = i + 1; j < stream_start; j++) {
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midi_stream_event &e2 = filler.at(j);
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if((e2.m_event & 0xFF00FFFF) == m || e2.m_event == m2) {
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// kill 'em
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e.m_event = 0;
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e2.m_event = 0;
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break;
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}
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}
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}
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}
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float *temp;
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const unsigned int needs_time = send_event_needs_time();
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if(needs_time) {
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temp = new float[needs_time * 2];
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if(temp) {
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render(temp, needs_time); // flush events
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unsigned int render_junk = 0;
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bool timestamp_set = false;
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unsigned last_timestamp = 0;
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for(i = 0; i < stream_start; i++) {
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if(filler[i].m_event) {
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send_event_time_filtered(filler[i].m_event, render_junk);
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if(timestamp_set) {
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if(filler[i].m_timestamp != last_timestamp) {
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render_junk += 16;
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}
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}
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last_timestamp = filler[i].m_timestamp;
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timestamp_set = true;
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if(render_junk >= needs_time) {
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render(temp, needs_time);
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render_junk -= needs_time;
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}
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}
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}
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render(temp, needs_time);
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delete[] temp;
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}
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} else {
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temp = new float[16 * 2];
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if(temp) {
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render(temp, 16);
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bool timestamp_set = false;
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unsigned last_timestamp = 0;
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for(i = 0; i < stream_start; i++) {
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if(filler[i].m_event) {
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if(timestamp_set) {
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if(filler[i].m_timestamp != last_timestamp) {
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render(temp, 16);
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}
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}
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last_timestamp = filler[i].m_timestamp;
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timestamp_set = true;
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send_event_filtered(filler[i].m_event);
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}
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}
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render(temp, 16);
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delete[] temp;
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}
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}
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}
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}
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void MIDIPlayer::setLoopMode(unsigned int mode) {
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if(uLoopMode != mode) {
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if(mode & loop_mode_enable)
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uTimeEnd -= uSampleRate;
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else
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uTimeEnd += uSampleRate;
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}
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uLoopMode = mode;
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}
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void MIDIPlayer::send_event_filtered(uint32_t b) {
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if(!(b & 0x80000000u)) {
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send_event(b);
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} else {
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const unsigned int p_index = b & 0xffffff;
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const uint8_t *p_data;
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size_t p_size, p_port;
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mSysexMap.get_entry(p_index, p_data, p_size, p_port);
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send_sysex_filtered(p_data, p_size, p_port);
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}
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}
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void MIDIPlayer::send_event_time_filtered(uint32_t b, unsigned int time) {
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if(!(b & 0x80000000u)) {
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if(reverb_chorus_disabled) {
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const uint32_t _b = b & 0x7FF0;
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if(_b == 0x5BB0 || _b == 0x5DB0)
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return;
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}
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send_event_time(b, time);
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} else {
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const unsigned int p_index = b & 0xffffff;
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const uint8_t *p_data;
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size_t p_size, p_port;
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mSysexMap.get_entry(p_index, p_data, p_size, p_port);
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send_sysex_time_filtered(p_data, p_size, p_port, time);
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}
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}
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void MIDIPlayer::setFilterMode(filter_mode m, bool disable_reverb_chorus) {
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mode = m;
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reverb_chorus_disabled = disable_reverb_chorus;
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if(initialized) {
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sysex_reset(0, 0);
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sysex_reset(1, 0);
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sysex_reset(2, 0);
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}
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}
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static const uint8_t syx_reset_gm[] = { 0xF0, 0x7E, 0x7F, 0x09, 0x01, 0xF7 };
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static const uint8_t syx_reset_gm2[] = { 0xF0, 0x7E, 0x7F, 0x09, 0x03, 0xF7 };
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static const uint8_t syx_reset_gs[] = { 0xF0, 0x41, 0x10, 0x42, 0x12, 0x40, 0x00, 0x7F, 0x00, 0x41, 0xF7 };
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static const uint8_t syx_reset_xg[] = { 0xF0, 0x43, 0x10, 0x4C, 0x00, 0x00, 0x7E, 0x00, 0xF7 };
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static const uint8_t syx_gs_limit_bank_lsb[] = { 0xF0, 0x41, 0x10, 0x42, 0x12, 0x40, 0x41, 0x00, 0x03, 0x00, 0xF7 };
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static bool syx_equal(const uint8_t *a, const uint8_t *b) {
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while(*a != 0xF7 && *b != 0xF7 && *a == *b) {
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a++;
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b++;
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}
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return *a == *b;
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}
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static bool syx_is_reset(const uint8_t *data) {
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return syx_equal(data, &syx_reset_gm[0]) || syx_equal(data, &syx_reset_gm2[0]) || syx_equal(data, &syx_reset_gs[0]) || syx_equal(data, &syx_reset_xg[0]);
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}
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void MIDIPlayer::sysex_send_gs(size_t port, uint8_t *data, size_t size, unsigned int time) {
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unsigned long i;
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unsigned char checksum = 0;
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for(i = 5; i + 1 < size && data[i + 1] != 0xF7; ++i)
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checksum += data[i];
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checksum = (128 - checksum) & 127;
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data[i] = checksum;
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if(time)
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send_sysex_time(data, size, port, time);
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else
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send_sysex(data, size, port);
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}
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void MIDIPlayer::sysex_reset_sc(uint32_t port, unsigned int time) {
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unsigned int i;
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uint8_t message[11];
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memcpy(&message[0], &syx_gs_limit_bank_lsb[0], sizeof(message));
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message[7] = 1;
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switch(mode) {
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default:
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break;
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case filter_sc55:
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message[8] = 1;
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break;
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case filter_sc88:
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message[8] = 2;
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break;
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case filter_sc88pro:
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message[8] = 3;
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break;
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case filter_sc8850:
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case filter_default:
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message[8] = 4;
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break;
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}
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for(i = 0x41; i <= 0x49; ++i) {
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message[6] = i;
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sysex_send_gs(port, &message[0], sizeof(message), time);
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}
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message[6] = 0x40;
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sysex_send_gs(port, &message[0], sizeof(message), time);
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for(i = 0x4A; i <= 0x4F; ++i) {
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message[6] = i;
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sysex_send_gs(port, &message[0], sizeof(message), time);
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}
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}
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void MIDIPlayer::sysex_reset(size_t port, unsigned int time) {
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if(initialized) {
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if(time) {
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send_sysex_time(&syx_reset_xg[0], sizeof(syx_reset_xg), port, time);
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send_sysex_time(&syx_reset_gm2[0], sizeof(syx_reset_gm2), port, time);
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send_sysex_time(&syx_reset_gm[0], sizeof(syx_reset_gm), port, time);
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} else {
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send_sysex(&syx_reset_xg[0], sizeof(syx_reset_xg), port);
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send_sysex(&syx_reset_gm2[0], sizeof(syx_reset_gm2), port);
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send_sysex(&syx_reset_gm[0], sizeof(syx_reset_gm), port);
|
|
}
|
|
|
|
switch(mode) {
|
|
case filter_gm:
|
|
/*
|
|
if (time)
|
|
send_sysex_time(syx_reset_gm, sizeof(syx_reset_gm), port, time);
|
|
else
|
|
send_sysex(syx_reset_gm, sizeof(syx_reset_gm), port);
|
|
*/
|
|
break;
|
|
|
|
case filter_gm2:
|
|
if(time)
|
|
send_sysex_time(&syx_reset_gm2[0], sizeof(syx_reset_gm2), port, time);
|
|
else
|
|
send_sysex(&syx_reset_gm2[0], sizeof(syx_reset_gm2), port);
|
|
break;
|
|
|
|
case filter_sc55:
|
|
case filter_sc88:
|
|
case filter_sc88pro:
|
|
case filter_sc8850:
|
|
case filter_default:
|
|
if(time)
|
|
send_sysex_time(&syx_reset_gs[0], sizeof(syx_reset_gs), port, time);
|
|
else
|
|
send_sysex(&syx_reset_gs[0], sizeof(syx_reset_gs), port);
|
|
sysex_reset_sc(port, time);
|
|
break;
|
|
|
|
case filter_xg:
|
|
if(time)
|
|
send_sysex_time(&syx_reset_xg[0], sizeof(syx_reset_xg), port, time);
|
|
else
|
|
send_sysex(&syx_reset_xg[0], sizeof(syx_reset_xg), port);
|
|
break;
|
|
}
|
|
|
|
{
|
|
unsigned int i;
|
|
for(i = 0; i < 16; ++i) {
|
|
if(time) {
|
|
send_event_time(0x78B0 + i + (port << 24), time);
|
|
send_event_time(0x79B0 + i + (port << 24), time);
|
|
if(mode != filter_xg || i != 9) {
|
|
send_event_time(0x20B0 + i + (port << 24), time);
|
|
send_event_time(0x00B0 + i + (port << 24), time);
|
|
send_event_time(0xC0 + i + (port << 24), time);
|
|
}
|
|
} else {
|
|
send_event(0x78B0 + i + (port << 24));
|
|
send_event(0x79B0 + i + (port << 24));
|
|
if(mode != filter_xg || i != 9) {
|
|
send_event(0x20B0 + i + (port << 24));
|
|
send_event(0x00B0 + i + (port << 24));
|
|
send_event(0xC0 + i + (port << 24));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if(mode == filter_xg) {
|
|
if(time) {
|
|
send_event_time(0x20B9 + (port << 24), time);
|
|
send_event_time(0x7F00B9 + (port << 24), time);
|
|
send_event_time(0xC9 + (port << 24), time);
|
|
} else {
|
|
send_event(0x20B9 + (port << 24));
|
|
send_event(0x7F00B9 + (port << 24));
|
|
send_event(0xC9 + (port << 24));
|
|
}
|
|
}
|
|
|
|
if(reverb_chorus_disabled) {
|
|
unsigned int i;
|
|
if(time) {
|
|
for(i = 0; i < 16; ++i) {
|
|
send_event_time(0x5BB0 + i + (port << 24), time);
|
|
send_event_time(0x5DB0 + i + (port << 24), time);
|
|
}
|
|
} else {
|
|
for(i = 0; i < 16; ++i) {
|
|
send_event(0x5BB0 + i + (port << 24));
|
|
send_event(0x5DB0 + i + (port << 24));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void MIDIPlayer::send_sysex_filtered(const uint8_t *data, size_t size, size_t port) {
|
|
send_sysex(data, size, port);
|
|
if(syx_is_reset(data) && mode != filter_default) {
|
|
sysex_reset(port, 0);
|
|
}
|
|
}
|
|
|
|
void MIDIPlayer::send_sysex_time_filtered(const uint8_t *data, size_t size, size_t port, unsigned int time) {
|
|
send_sysex_time(data, size, port, time);
|
|
if(syx_is_reset(data) && mode != filter_default) {
|
|
sysex_reset(port, time);
|
|
}
|
|
}
|
|
|
|
bool MIDIPlayer::GetLastError(std::string &p_out) {
|
|
return get_last_error(p_out);
|
|
}
|
|
|
|
unsigned long MIDIPlayer::Tell() const {
|
|
return uTimeCurrent;
|
|
}
|