72 lines
2 KiB
C++
72 lines
2 KiB
C++
#include "MidiChannelEventAdapter.h"
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#include "BinaryStream.h"
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#include "ByteUtils.h"
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#include <iostream>
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#include <bitset>
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int MidiChannelEventAdapter::ReadEvent(std::ifstream* file, char firstByte, MidiChannelEvent* event, MidiChannelEvent::Type& lastEventType)
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{
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int first_four_bits = 0xF0;
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int second_four_bits = 0xF;
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int event_type = (firstByte & first_four_bits) >> 4;
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int midi_channel = (firstByte & second_four_bits) >> 4;
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unsigned byteCount = 0;
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std::cout << "Channel: " << midi_channel << std::endl;
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const bool isStatusByte = ByteUtils::MostSignificantBitIsOne(firstByte);
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if(isStatusByte)
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{
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event->SetTypeAndChannel(firstByte);
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lastEventType = event->GetType();
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}
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else
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{
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event->SetType(lastEventType);
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}
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std::cout << "MC Type " << static_cast<int>(event->GetType()) << std::endl;
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switch(event->GetType())
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{
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case MidiChannelEvent::Type::NOTE_ON:
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case MidiChannelEvent::Type::NOTE_OFF:
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case MidiChannelEvent::Type::CONTROLLER:
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{
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if (isStatusByte)
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{
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byteCount += ReadEventData(file, event);
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}
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else
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{
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byteCount += ReadEventData(file, event, firstByte);
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}
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break;
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}
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case MidiChannelEvent::Type::PROGRAM:
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{
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int value0 = *BinaryStream::getNextByteAsInt(file);
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byteCount ++;
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break;
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}
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default:
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std::cout << "Unknown status event: " << std::bitset<8>(firstByte) << "|" << event_type <<std::endl;
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break;
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}
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return byteCount;
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}
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int MidiChannelEventAdapter::ReadEventData(std::ifstream* file, MidiChannelEvent* event, char c)
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{
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int value0 = int(c);
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int value1 = *BinaryStream::getNextByteAsInt(file);
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event->SetValues(value0, value1);
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return 1;
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}
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int MidiChannelEventAdapter::ReadEventData(std::ifstream* file, MidiChannelEvent* event)
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{
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int value0 = *BinaryStream::getNextByteAsInt(file);
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int value1 = *BinaryStream::getNextByteAsInt(file);
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event->SetValues(value0, value1);
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return 2;
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}
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