1 files changed, 48 insertions, 0 deletions
diff --git a/parser.h b/parser.h
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index 0000000..3454bd4
--- /dev/null
+++ b/parser.h
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+#ifndef PARSER_H
+#define PARSER_H
+#include "util.h"
+#include "instrument.h"
+
+/* Parse a complex sheet file so that it is easy to generate complex
+   sounds. */
+
+/* A unit for the parser.  This typically represents one note, but can
+   serve different purposes.  In our format, a unit is given in one
+   line. */
+
+struct PUnit_s;
+
+typedef struct PUnit_s PUnit;
+
+struct PNote_s;
+
+typedef struct PNote_s PNote;
+
+/* A sheet is just an array of units.  But we need to know the length
+   of the array as well. */
+
+typedef struct {
+  PUnit *data;
+  LENT len;
+} PSheet;
+
+U_ATTR void print_sheet(const PSheet sh);
+
+/* Might be helpful, or not */
+
+H_ATTR unsigned char is_empty_note(PNote *n);
+
+/* The function to read the sheet. */
+
+U_ATTR PSheet read_sheet(const char *str, LENT len);
+
+/* Destructor */
+
+U_ATTR void destroy_sheet(PSheet sh);
+
+/* Now play sheet */
+
+U_ATTR WaveFrag play_sheet(const PSheet sh, const Volume v);
+
+#endif
+