X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=pitch.h;fp=pitch.h;h=13c29057bf5d25272d438e427d5c0f2c3ca4223d;hb=08ba627b61792c7d6e31d71831f062f5a8162248;hp=0000000000000000000000000000000000000000;hpb=d25fa8b91eb2e9dad783584215c35124b65429a8;p=scherzo

diff --git a/pitch.h b/pitch.h
new file mode 100644
index 0000000..13c2905
--- /dev/null
+++ b/pitch.h
@@ -0,0 +1,98 @@
+/* scherzo - Music notation training
+ *
+ * 	pitch.h - Common structures and functions for pitches, etc.
+ *
+ * Copyright © 2010,2013 Carl Worth
+ *
+ * This program 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
+ * (at your option) any later version.
+ *
+ * This program 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 this program.  If not, see http://www.gnu.org/licenses/ .
+ */
+
+#define PITCH_ACCIDENTAL_MASK 0x07
+#define PITCH_ACCIDENTAL_SHIFT 0
+
+typedef enum pitch_accidental
+{
+    PITCH_ACCIDENTAL_DOUBLE_FLAT,
+    PITCH_ACCIDENTAL_FLAT,
+    PITCH_ACCIDENTAL_NATURAL,
+    PITCH_ACCIDENTAL_SHARP,
+    PITCH_ACCIDENTAL_DOUBLE_SHARP
+} pitch_accidental_t;
+
+#define PITCH_ACCIDENTAL(pitch) (((pitch) & PITCH_ACCIDENTAL_MASK) >> PITCH_ACCIDENTAL_SHIFT)
+
+#define PITCH_NAME_MASK 0x38
+#define PITCH_NAME_SHIFT 3
+
+typedef enum pitch_name
+{
+    PITCH_NAME_C,
+    PITCH_NAME_D,
+    PITCH_NAME_E,
+    PITCH_NAME_F,
+    PITCH_NAME_G,
+    PITCH_NAME_A,
+    PITCH_NAME_B,
+} pitch_name_t;
+
+#define PITCH_NAME(pitch) (((pitch) & PITCH_NAME_MASK) >> PITCH_NAME_SHIFT)
+
+#define PITCH(name, accidental) (((name) << PITCH_NAME_SHIFT) | (accidental))
+
+#define PITCH_LITERAL(literal_name, literal_accidental) PITCH(PITCH_NAME_##literal_name, PITCH_ACCIDENTAL_##literal_accidental)
+
+typedef enum pitch
+{
+    PITCH_Cff = PITCH_LITERAL (C, DOUBLE_FLAT), 
+    PITCH_Cf  = PITCH_LITERAL (C, FLAT),	  
+    PITCH_C   = PITCH_LITERAL (C, NATURAL),	  
+    PITCH_Cs  = PITCH_LITERAL (C, SHARP),	  
+    PITCH_Css = PITCH_LITERAL (C, DOUBLE_SHARP),
+
+    PITCH_Dff = PITCH_LITERAL (D, DOUBLE_FLAT), 
+    PITCH_Df  = PITCH_LITERAL (D, FLAT),	  
+    PITCH_D   = PITCH_LITERAL (D, NATURAL),	  
+    PITCH_Ds  = PITCH_LITERAL (D, SHARP),	  
+    PITCH_Dss = PITCH_LITERAL (D, DOUBLE_SHARP),
+
+    PITCH_Eff = PITCH_LITERAL (E, DOUBLE_FLAT), 
+    PITCH_Ef  = PITCH_LITERAL (E, FLAT),	  
+    PITCH_E   = PITCH_LITERAL (E, NATURAL),	  
+    PITCH_Es  = PITCH_LITERAL (E, SHARP),	  
+    PITCH_Ess = PITCH_LITERAL (E, DOUBLE_SHARP),
+
+    PITCH_Fff = PITCH_LITERAL (F, DOUBLE_FLAT), 
+    PITCH_Ff  = PITCH_LITERAL (F, FLAT),	  
+    PITCH_F   = PITCH_LITERAL (F, NATURAL),	  
+    PITCH_Fs  = PITCH_LITERAL (F, SHARP),	  
+    PITCH_Fss = PITCH_LITERAL (F, DOUBLE_SHARP),
+
+    PITCH_Gff = PITCH_LITERAL (G, DOUBLE_FLAT), 
+    PITCH_Gf  = PITCH_LITERAL (G, FLAT),	  
+    PITCH_G   = PITCH_LITERAL (G, NATURAL),	  
+    PITCH_Gs  = PITCH_LITERAL (G, SHARP),	  
+    PITCH_Gss = PITCH_LITERAL (G, DOUBLE_SHARP),
+
+    PITCH_Aff = PITCH_LITERAL (A, DOUBLE_FLAT), 
+    PITCH_Af  = PITCH_LITERAL (A, FLAT),	  
+    PITCH_A   = PITCH_LITERAL (A, NATURAL),	  
+    PITCH_As  = PITCH_LITERAL (A, SHARP),	  
+    PITCH_Ass = PITCH_LITERAL (A, DOUBLE_SHARP),
+
+    PITCH_Bff = PITCH_LITERAL (B, DOUBLE_FLAT), 
+    PITCH_Bf  = PITCH_LITERAL (B, FLAT),	  
+    PITCH_B   = PITCH_LITERAL (B, NATURAL),	  
+    PITCH_Bs  = PITCH_LITERAL (B, SHARP),	  
+    PITCH_Bss = PITCH_LITERAL (B, DOUBLE_SHARP)
+} pitch_t;