very, very simple WP with midi CC out

2024-10-09 02:01:23 +02:00
commit 3d6fc151f1
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+/*
+Copyright (c) 2015, Dimitri Diakopoulos All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* 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 <libremidi/message.hpp>
+
+namespace libremidi
+{
+/**
+ * @brief reads Standard MIDI files (SMF).
+ *
+ * Usage:
+
+ * ```
+ * libremidi::reader r;
+ * auto res = r.parse(midi_bytes, num_bytes);
+ * ```
+ */
+class LIBREMIDI_EXPORT reader
+{
+public:
+  enum parse_result
+  {
+    invalid,    //! Nothing could be parsed
+    incomplete, //! Some of the data could be parsed, but not all: there may be missing events /
+                //! tracks
+    complete,   //! All the data could be parsed but not necessarily validated
+    validated   //! The data could be parsed and conforms to SMF rules
+  };
+  explicit reader(bool useAbsolute = false);
+  ~reader();
+
+  parse_result parse(const uint8_t* data, std::size_t size) noexcept;
+  parse_result parse(const std::vector<uint8_t>& buffer) noexcept;
+  parse_result parse(std::span<uint8_t> buffer) noexcept;
+
+  [[nodiscard]] double get_end_time() const noexcept;
+
+  float ticksPerBeat{}; // precision (number of ticks distinguishable per second)
+  float startingTempo{};
+  int format{};
+
+  std::vector<midi_track> tracks;
+
+private:
+  bool useAbsoluteTicks{};
+};
+}
+
+#if defined(LIBREMIDI_HEADER_ONLY)
+  #include <libremidi/reader.cpp>
+#endif