Applications: Move to Userland/Applications/

1 files changed, 74 insertions, 0 deletions

diff --git a/Userland/Applications/Piano/TrackManager.h b/Userland/Applications/Piano/TrackManager.h
new file mode 100644
index 0000000000..70cb661bc4
--- /dev/null
+++ b/Userland/Applications/Piano/TrackManager.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include "Music.h"
+#include "Track.h"
+#include <AK/Array.h>
+#include <AK/Noncopyable.h>
+#include <AK/NonnullOwnPtr.h>
+#include <AK/Vector.h>
+
+class TrackManager {
+    AK_MAKE_NONCOPYABLE(TrackManager);
+    AK_MAKE_NONMOVABLE(TrackManager);
+
+public:
+    TrackManager();
+    ~TrackManager();
+
+    Track& current_track() { return *m_tracks[m_current_track]; }
+    Span<const Sample> buffer() const { return m_current_front_buffer; }
+    int octave() const { return m_octave; }
+    int octave_base() const { return (m_octave - octave_min) * 12; }
+    int time() const { return m_time; }
+
+    void fill_buffer(Span<Sample>);
+    void reset();
+    void set_should_loop(bool b) { m_should_loop = b; }
+    void set_note_current_octave(int note, Switch);
+    void set_octave(Direction);
+    void set_octave(int octave);
+    void add_track();
+    void next_track();
+
+private:
+    Vector<NonnullOwnPtr<Track>> m_tracks;
+    size_t m_current_track { 0 };
+
+    Array<Sample, sample_count> m_front_buffer;
+    Array<Sample, sample_count> m_back_buffer;
+    Span<Sample> m_current_front_buffer { m_front_buffer.span() };
+    Span<Sample> m_current_back_buffer { m_back_buffer.span() };
+
+    int m_octave { 4 };
+
+    u32 m_time { 0 };
+
+    bool m_should_loop { true };
+};