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+/*
+ This file is part of Machina.
+ Copyright 2007-2013 David Robillard <http://drobilla.net>
+
+ Machina is free software: you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation, either version 3 of the License, or any later version.
+
+ Machina is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Machina. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef MACHINA_SMF_READER_HPP
+#define MACHINA_SMF_READER_HPP
+
+#include <stdexcept>
+#include <string>
+#include <inttypes.h>
+#include "raul/TimeStamp.hpp"
+
+namespace machina {
+
+/** Standard Midi File (Type 0) Reader
+ *
+ * Currently this only reads SMF files with tempo-based timing.
+ * \ingroup raul
+ */
+class SMFReader
+{
+public:
+ class PrematureEOF
+ : public std::exception
+ {
+ const char* what() const throw() { return "Unexpected end of file"; }
+ };
+ class CorruptFile
+ : public std::exception
+ {
+ const char* what() const throw() { return "Corrupted file"; }
+ };
+ class UnsupportedTime
+ : public std::exception
+ {
+ const char* what() const throw() { return
+ "Unsupported time stamp type (SMPTE)"; }
+ };
+
+ explicit SMFReader(const std::string filename = "");
+ ~SMFReader();
+
+ bool open(const std::string& filename);
+
+ bool seek_to_track(unsigned track);
+
+ uint16_t type() const { return _type; }
+ uint16_t ppqn() const { return _ppqn; }
+ size_t num_tracks() { return _num_tracks; }
+
+ int read_event(size_t buf_len,
+ uint8_t* buf,
+ uint32_t* ev_size,
+ uint32_t* ev_delta_time);
+
+ void close();
+
+ static uint32_t read_var_len(FILE* fd);
+
+protected:
+ /** size of SMF header, including MTrk chunk header */
+ static const uint32_t HEADER_SIZE = 22;
+
+ std::string _filename;
+ FILE* _fd;
+ uint16_t _type;
+ uint16_t _ppqn;
+ uint16_t _num_tracks;
+ uint32_t _track;
+ uint32_t _track_size;
+};
+
+} // namespace machina
+
+#endif // MACHINA_SMF_READER_HPP