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authorVolker Fischer <corrados@users.noreply.github.com>2021-04-30 17:07:36 +0200
committerVolker Fischer <corrados@users.noreply.github.com>2021-04-30 17:07:36 +0200
commit5be222dee61dc8b28a429d93c39a2500a28de759 (patch)
tree5ba775dbb76aadbb117c7673ebed3f28fb9bda9c /src/audioinputenginemidi.cc
parentd605a7a9166dce74aa17d33da92e11ca9b467e55 (diff)
parenta15a662bcf6de70cb379bfc582c349f7ff87ee27 (diff)
Merge branch 'distance' into edrumulus
Diffstat (limited to 'src/audioinputenginemidi.cc')
-rw-r--r--src/audioinputenginemidi.cc56
1 files changed, 42 insertions, 14 deletions
diff --git a/src/audioinputenginemidi.cc b/src/audioinputenginemidi.cc
index ce3ce18..f6fedd6 100644
--- a/src/audioinputenginemidi.cc
+++ b/src/audioinputenginemidi.cc
@@ -100,9 +100,13 @@ bool AudioInputEngineMidi::isValid() const
static const std::uint8_t NoteOff = 0x80;
static const std::uint8_t NoteOn = 0x90;
static const std::uint8_t NoteAftertouch = 0xA0;
+static const std::uint8_t ControlChange = 0xB0;
// Note type mask:
-static int const NoteMask = 0xF0;
+static const std::uint8_t TypeMask = 0xF0;
+
+// See:
+// https://www.midi.org/specifications-old/item/table-1-summary-of-midi-message
void AudioInputEngineMidi::processNote(const std::uint8_t* midi_buffer,
std::size_t midi_buffer_length,
@@ -114,35 +118,59 @@ void AudioInputEngineMidi::processNote(const std::uint8_t* midi_buffer,
return;
}
- auto key = midi_buffer[1];
- auto velocity = midi_buffer[2];
- auto instrument_idx = mmap.lookup(key);
-
- switch(midi_buffer[0] & NoteMask)
+ switch(midi_buffer[0] & TypeMask)
{
case NoteOff:
// Ignore for now
break;
case NoteOn:
- if(velocity != 0 && instrument_idx != -1)
{
- // maps velocities to [.5/127, 126.5/127]
- auto centered_velocity = (velocity-.5f)/127.0f;
- events.push_back({EventType::OnSet, (std::size_t)instrument_idx,
- offset, centered_velocity});
+ auto key = midi_buffer[1];
+ auto velocity = midi_buffer[2];
+ auto instrument_idx = mmap.lookup(key);
+ if(velocity != 0 && instrument_idx != -1)
+ {
+ // maps velocities to [.5/127, 126.5/127]
+ auto centered_velocity = (velocity-.5f)/127.0f;
+ events.push_back({ EventType::OnSet, (std::size_t)instrument_idx,
+ offset, centered_velocity, positional_information });
+ }
}
break;
case NoteAftertouch:
- if(velocity == 0 && instrument_idx != -1)
{
- events.push_back({EventType::Choke, (std::size_t)instrument_idx,
- offset, .0f});
+ auto key = midi_buffer[1];
+ auto velocity = midi_buffer[2];
+ auto instrument_idx = mmap.lookup(key);
+ if(velocity == 0 && instrument_idx != -1)
+ {
+ events.push_back({ EventType::Choke, (std::size_t)instrument_idx,
+ offset, .0f, .0f });
+ }
+ }
+ break;
+
+ case ControlChange:
+ {
+ auto controller_number = midi_buffer[1];
+ auto value = midi_buffer[2];
+ if(controller_number == 16) // positional information
+ {
+ // Store value for use in next NoteOn event.
+ positional_information = value / 127.0f;
+
+ // Return here to prevent reset of cached positional information.
+ return;
+ }
}
break;
default:
break;
}
+
+ // Clear cached positional information.
+ positional_information = 0.0f;
}