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Improve audio and midi support.

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This commit is contained in:
jmsgrogan 2021-05-23 21:02:38 +01:00
parent 9bcc0ae88e
commit 8b5f485d1e
47 changed files with 1446 additions and 634 deletions
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77
src/audio/midi/reader/MidiChannelEventAdapter.cpp Normal file
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#include "MidiChannelEventAdapter.h"
#include "BinaryFile.h"
#include "ByteUtils.h"
#include <iostream>
#include <bitset>
int MidiChannelEventAdapter::ReadEvent(std::ifstream* file, char firstByte, MidiChannelEvent* event, MidiChannelEvent::Type& lastEventType)
{
int first_four_bits = 0xF0;
int second_four_bits = 0xF;
int event_type = (firstByte & first_four_bits) >> 4;
int midi_channel = (firstByte & second_four_bits) >> 4;
unsigned byteCount = 0;
std::cout << "Channel: " << midi_channel << std::endl;
const bool isStatusByte = ByteUtils::MSBIsOne(firstByte);
if(isStatusByte)
{
event->SetTypeAndChannel(firstByte);
lastEventType = event->GetType();
}
else
{
event->SetType(lastEventType);
}
std::cout << "MC Type " << static_cast<int>(event->GetType()) << std::endl;
switch(event->GetType())
{
case MidiChannelEvent::Type::NOTE_ON:
case MidiChannelEvent::Type::NOTE_OFF:
case MidiChannelEvent::Type::CONTROLLER:
{
if (isStatusByte)
{
byteCount += ReadEventData(file, event);
}
else
{
byteCount += ReadEventData(file, event, firstByte);
}
break;
}
case MidiChannelEvent::Type::PROGRAM:
{
int value0 = 0;
BinaryFile::GetNextByteAsInt(file, value0);
byteCount ++;
break;
}
default:
std::cout << "Unknown status event: " << std::bitset<8>(firstByte) << "|" << event_type <<std::endl;
break;
}
return byteCount;
}
int MidiChannelEventAdapter::ReadEventData(std::ifstream* file, MidiChannelEvent* event, char c)
{
int value0 = int(c);
int value1 = 0;
BinaryFile::GetNextByteAsInt(file, value1);
event->SetValues(value0, value1);
return 1;
}
int MidiChannelEventAdapter::ReadEventData(std::ifstream* file, MidiChannelEvent* event)
{
int value0 = 0;
BinaryFile::GetNextByteAsInt(file, value0);
int value1 = 0;
BinaryFile::GetNextByteAsInt(file, value1);
event->SetValues(value0, value1);
return 2;
}