import from github

tools/mid2agb/midi.h

@@ -0,0 +1,87 @@
+// Copyright(c) 2016 YamaArashi
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#ifndef MIDI_H
+#define MIDI_H
+
+#include <cstdint>
+
+enum class MidiFormat
+{
+    SingleTrack,
+    MultiTrack
+};
+
+enum class EventType
+{
+    EndOfTie = 0x01,
+    Label = 0x11,
+    LoopEnd = 0x12,
+    LoopEndBegin = 0x13,
+    LoopBegin = 0x14,
+    OriginalTimeSignature = 0x15,
+    WholeNoteMark = 0x16,
+    Pattern = 0x17,
+    TimeSignature = 0x18,
+    Tempo = 0x19,
+    InstrumentChange = 0x21,
+    Controller = 0x22,
+    PitchBend = 0x23,
+    KeyShift = 0x31,
+    Note = 0x40,
+    TimeSplit = 0xFE,
+    EndOfTrack = 0xFF,
+};
+
+struct Event
+{
+    std::int32_t time;
+    EventType type;
+    std::uint8_t note;
+    std::uint8_t param1;
+    std::int32_t param2;
+
+    bool operator==(const Event& other)
+    {
+        return (time == other.time
+            && type == other.type
+            && note == other.note
+            && param1 == other.param1
+            && param2 == other.param2);
+    }
+
+    bool operator!=(const Event& other)
+    {
+        return !(*this == other);
+    }
+};
+
+void ReadMidiFileHeader();
+void ReadMidiTracks();
+
+extern int g_midiChan;
+extern std::int32_t g_initialWait;
+
+inline bool IsPatternBoundary(EventType type)
+{
+    return type == EventType::EndOfTrack || (int)type <= 0x17;
+}
+
+#endif // MIDI_H