#include "score.h"
#include "mnemon.h"
-#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))
+#define ARRAY_SIZE(arr) ((int) (sizeof(arr) / sizeof(arr[0])))
#define unused(foo) foo __attribute__((unused))
typedef struct challenge
{
+ int active;
bin_t *bin;
int item_index;
score_staff_t *staff;
- score_note_t *note;
+ pitch_t pitch;
int satisfied;
int mistaken;
} challenge_t;
+typedef struct pitch_group
+{
+ void *ctx;
+ pitch_t *pitches;
+ int size;
+ int num_pitches;
+} pitch_group_t;
+
typedef struct scherzo
{
void *ctx;
GtkWidget *window;
score_t *score;
int staff_height;
+
score_staff_t *treble;
score_staff_t *bass;
score_chord_t *chord;
+
+ /* The word "keyboard" here is referring to a "computer
+ * keyboard". Any "piano keyboard" key knows its own octave and
+ * accidental already. */
+ int keyboard_octave;
+
int midi_fd;
snd_midi_event_t *snd_midi_event;
mnemon_t mnemon;
challenge_t challenge;
- int num_notes_pressed;
- score_note_t **notes_pressed;
+ pitch_group_t notes_pressed;
+ pitch_group_t notes_pedaled;
+
+ int pedal_pressed;
+
+ pitch_t key;
} scherzo_t;
/* Forward declarations. */
-static score_note_t *
-scherzo_add_note (scherzo_t *scherzo, score_pitch_t pitch, int octave);
+static void
+scherzo_press_note (scherzo_t *scherzo, pitch_t pitch);
static void
-scherzo_remove_note (scherzo_t *scherzo, score_pitch_t pitch, int octave);
+scherzo_release_note (scherzo_t *scherzo, pitch_t pitch);
static void
-_judge_note (scherzo_t *scherzo, score_note_t *note);
+scherzo_press_pedal (scherzo_t *scherzo);
+
+static void
+scherzo_release_pedal (scherzo_t *scherzo);
+
+static void
+_judge_pitch (scherzo_t *scherzo, pitch_t pitch);
static void
_score_challenge (scherzo_t *scherzo);
{
scherzo_t *scherzo = user_data;
int octave;
- score_pitch_t pitch;
+ pitch_t pitch = PITCH_NOT_A_PITCH;
- if (scherzo->challenge.note)
- octave = scherzo->challenge.note->octave;
+ if (scherzo->challenge.active)
+ octave = PITCH_OCTAVE (scherzo->challenge.pitch);
else
- octave = 4;
+ octave = scherzo->keyboard_octave;
switch (key->keyval) {
case GDK_KEY_plus:
gtk_widget_queue_draw (widget);
return TRUE;
break;
- case GDK_KEY_q:
- case GDK_KEY_Q:
case GDK_KEY_Escape:
gtk_main_quit ();
return FALSE;
- case GDK_KEY_c:
- case GDK_KEY_C:
- pitch = SCORE_PITCH_C;
+ /* Map a piano keyboard onto the computer keyboard with white keys
+ * along the home row, (piano C on computer A, up to next octave
+ * higher C on computer K). Black keys are in the expected
+ * positions, (C# is W, D# is E, etc.).
+ */
+ case GDK_KEY_a:
+ case GDK_KEY_A:
+ pitch = PITCH_LITERAL (C, NATURAL, octave);
+ break;
+ case GDK_KEY_s:
+ case GDK_KEY_S:
+ pitch = PITCH_LITERAL (D, NATURAL, octave);
break;
case GDK_KEY_d:
case GDK_KEY_D:
- pitch = SCORE_PITCH_D;
- break;
- case GDK_KEY_e:
- case GDK_KEY_E:
- pitch = SCORE_PITCH_E;
+ pitch = PITCH_LITERAL (E, NATURAL, octave);
break;
case GDK_KEY_f:
case GDK_KEY_F:
- pitch = SCORE_PITCH_F;
+ pitch = PITCH_LITERAL (F, NATURAL, octave);
break;
case GDK_KEY_g:
case GDK_KEY_G:
- pitch = SCORE_PITCH_G;
+ pitch = PITCH_LITERAL (G, NATURAL, octave);
break;
- case GDK_KEY_a:
- case GDK_KEY_A:
- pitch = SCORE_PITCH_A;
+ case GDK_KEY_h:
+ case GDK_KEY_H:
+ pitch = PITCH_LITERAL (A, NATURAL, octave);
+ break;
+ case GDK_KEY_j:
+ case GDK_KEY_J:
+ pitch = PITCH_LITERAL (B, NATURAL, octave);
+ break;
+ case GDK_KEY_k:
+ case GDK_KEY_K:
+ pitch = PITCH_LITERAL (C, NATURAL, octave + 1);
+ break;
+ case GDK_KEY_l:
+ case GDK_KEY_L:
+ pitch = PITCH_LITERAL (D, NATURAL, octave + 1);
+ break;
+ case GDK_KEY_semicolon:
+ case GDK_KEY_colon:
+ pitch = PITCH_LITERAL (E, NATURAL, octave + 1);
+ break;
+ case GDK_KEY_apostrophe:
+ case GDK_KEY_quotedbl:
+ pitch = PITCH_LITERAL (F, NATURAL, octave + 1);
+ break;
+ case GDK_KEY_w:
+ case GDK_KEY_W:
+ pitch = PITCH_LITERAL (C, SHARP, octave);
+ break;
+ case GDK_KEY_e:
+ case GDK_KEY_E:
+ pitch = PITCH_LITERAL (D, SHARP, octave);
+ break;
+ case GDK_KEY_t:
+ case GDK_KEY_T:
+ pitch = PITCH_LITERAL (F, SHARP, octave);
+ break;
+ case GDK_KEY_y:
+ case GDK_KEY_Y:
+ pitch = PITCH_LITERAL (G, SHARP, octave);
+ break;
+ case GDK_KEY_u:
+ case GDK_KEY_U:
+ pitch = PITCH_LITERAL (A, SHARP, octave);
+ break;
+ case GDK_KEY_o:
+ case GDK_KEY_O:
+ pitch = PITCH_LITERAL (C, SHARP, octave + 1);
break;
- case GDK_KEY_b:
- case GDK_KEY_B:
- pitch = SCORE_PITCH_B;
+ case GDK_KEY_p:
+ case GDK_KEY_P:
+ pitch = PITCH_LITERAL (D, SHARP, octave + 1);
+ break;
+ case GDK_KEY_bracketright:
+ case GDK_KEY_braceright:
+ pitch = PITCH_LITERAL (F, SHARP, octave + 1);
+ break;
+ case GDK_KEY_0:
+ case GDK_KEY_1:
+ case GDK_KEY_2:
+ case GDK_KEY_3:
+ case GDK_KEY_4:
+ case GDK_KEY_5:
+ case GDK_KEY_6:
+ case GDK_KEY_7:
+ case GDK_KEY_8:
+ scherzo->keyboard_octave = key->keyval - GDK_KEY_0;
+ break;
+ case GDK_KEY_space:
+ scherzo_press_pedal (scherzo);
break;
}
- if ((key->keyval >= GDK_KEY_A && key->keyval <= GDK_KEY_G) ||
- (key->keyval >= GDK_KEY_a && key->keyval <= GDK_KEY_g))
+ if (pitch != PITCH_NOT_A_PITCH)
{
- score_note_t *note;
-
- note = scherzo_add_note (scherzo, pitch, octave);
- _judge_note (scherzo, note);
+ scherzo_press_note (scherzo, pitch);
+ _judge_pitch (scherzo, pitch);
gtk_widget_queue_draw (scherzo->window);
return TRUE;
{
scherzo_t *scherzo = user_data;
int octave;
- score_pitch_t pitch;
+ pitch_t pitch = PITCH_NOT_A_PITCH;
- if (scherzo->challenge.note)
- octave = scherzo->challenge.note->octave;
+ if (scherzo->challenge.active)
+ octave = PITCH_OCTAVE (scherzo->challenge.pitch);
else
- octave = 4;
+ octave = scherzo->keyboard_octave;
switch (key->keyval) {
- case GDK_KEY_c:
- case GDK_KEY_C:
- pitch = SCORE_PITCH_C;
+ case GDK_KEY_a:
+ case GDK_KEY_A:
+ pitch = PITCH_LITERAL (C, NATURAL, octave);
+ break;
+ case GDK_KEY_s:
+ case GDK_KEY_S:
+ pitch = PITCH_LITERAL (D, NATURAL, octave);
break;
case GDK_KEY_d:
case GDK_KEY_D:
- pitch = SCORE_PITCH_D;
- break;
- case GDK_KEY_e:
- case GDK_KEY_E:
- pitch = SCORE_PITCH_E;
+ pitch = PITCH_LITERAL (E, NATURAL, octave);
break;
case GDK_KEY_f:
case GDK_KEY_F:
- pitch = SCORE_PITCH_F;
+ pitch = PITCH_LITERAL (F, NATURAL, octave);
break;
case GDK_KEY_g:
case GDK_KEY_G:
- pitch = SCORE_PITCH_G;
+ pitch = PITCH_LITERAL (G, NATURAL, octave);
break;
- case GDK_KEY_a:
- case GDK_KEY_A:
- pitch = SCORE_PITCH_A;
+ case GDK_KEY_h:
+ case GDK_KEY_H:
+ pitch = PITCH_LITERAL (A, NATURAL, octave);
+ break;
+ case GDK_KEY_j:
+ case GDK_KEY_J:
+ pitch = PITCH_LITERAL (B, NATURAL, octave);
+ break;
+ case GDK_KEY_k:
+ case GDK_KEY_K:
+ pitch = PITCH_LITERAL (C, NATURAL, octave + 1);
+ break;
+ case GDK_KEY_l:
+ case GDK_KEY_L:
+ pitch = PITCH_LITERAL (D, NATURAL, octave + 1);
+ break;
+ case GDK_KEY_semicolon:
+ case GDK_KEY_colon:
+ pitch = PITCH_LITERAL (E, NATURAL, octave + 1);
+ break;
+ case GDK_KEY_apostrophe:
+ case GDK_KEY_quotedbl:
+ pitch = PITCH_LITERAL (F, NATURAL, octave + 1);
break;
- case GDK_KEY_b:
- case GDK_KEY_B:
- pitch = SCORE_PITCH_B;
+ case GDK_KEY_w:
+ case GDK_KEY_W:
+ pitch = PITCH_LITERAL (C, SHARP, octave);
+ break;
+ case GDK_KEY_e:
+ case GDK_KEY_E:
+ pitch = PITCH_LITERAL (D, SHARP, octave);
+ break;
+ case GDK_KEY_t:
+ case GDK_KEY_T:
+ pitch = PITCH_LITERAL (F, SHARP, octave);
+ break;
+ case GDK_KEY_y:
+ case GDK_KEY_Y:
+ pitch = PITCH_LITERAL (G, SHARP, octave);
+ break;
+ case GDK_KEY_u:
+ case GDK_KEY_U:
+ pitch = PITCH_LITERAL (A, SHARP, octave);
+ break;
+ case GDK_KEY_o:
+ case GDK_KEY_O:
+ pitch = PITCH_LITERAL (C, SHARP, octave + 1);
+ break;
+ case GDK_KEY_p:
+ case GDK_KEY_P:
+ pitch = PITCH_LITERAL (D, SHARP, octave + 1);
+ break;
+ case GDK_KEY_bracketright:
+ case GDK_KEY_braceright:
+ pitch = PITCH_LITERAL (F, SHARP, octave + 1);
+ break;
+ case GDK_KEY_space:
+ scherzo_release_pedal (scherzo);
break;
}
- if ((key->keyval >= GDK_KEY_A && key->keyval <= GDK_KEY_G) ||
- (key->keyval >= GDK_KEY_a && key->keyval <= GDK_KEY_g))
+ if (pitch != PITCH_NOT_A_PITCH)
{
- scherzo_remove_note (scherzo, pitch, octave);
+ scherzo_release_note (scherzo, pitch);
_score_challenge (scherzo);
gtk_widget_queue_draw (scherzo->window);
}
static unsigned char
-_score_pitch_and_octave_to_midi (score_pitch_t pitch,
- int octave)
+_pitch_to_midi (pitch_t pitch)
{
+ int octave = PITCH_OCTAVE (pitch);
unsigned char midi_note = 12 * (octave + 1);
- switch (SCORE_PITCH_NAME (pitch)) {
- case SCORE_PITCH_NAME_C:
+ switch (PITCH_NAME (pitch)) {
+ case PITCH_NAME_C:
break;
- case SCORE_PITCH_NAME_D:
+ case PITCH_NAME_D:
midi_note += 2;
break;
- case SCORE_PITCH_NAME_E:
+ case PITCH_NAME_E:
midi_note += 4;
break;
- case SCORE_PITCH_NAME_F:
+ case PITCH_NAME_F:
midi_note += 5;
break;
- case SCORE_PITCH_NAME_G:
+ case PITCH_NAME_G:
midi_note += 7;
break;
- case SCORE_PITCH_NAME_A:
+ case PITCH_NAME_A:
midi_note += 9;
break;
- case SCORE_PITCH_NAME_B:
+ case PITCH_NAME_B:
midi_note += 11;
break;
}
- switch (SCORE_PITCH_ACCIDENTAL (pitch)) {
- case SCORE_PITCH_ACCIDENTAL_DOUBLE_FLAT:
+ switch (PITCH_ACCIDENTAL (pitch)) {
+ case PITCH_ACCIDENTAL_DOUBLE_FLAT:
midi_note -= 2;
break;
- case SCORE_PITCH_ACCIDENTAL_FLAT:
+ case PITCH_ACCIDENTAL_FLAT:
midi_note -= 1;
break;
- case SCORE_PITCH_ACCIDENTAL_NATURAL:
+ case PITCH_ACCIDENTAL_NATURAL:
break;
- case SCORE_PITCH_ACCIDENTAL_SHARP:
+ case PITCH_ACCIDENTAL_SHARP:
midi_note += 1;
break;
- case SCORE_PITCH_ACCIDENTAL_DOUBLE_SHARP:
+ case PITCH_ACCIDENTAL_DOUBLE_SHARP:
midi_note += 2;
break;
}
return midi_note;
}
-static void
-_midi_to_score_pitch_and_octave (unsigned char midi_note,
- score_pitch_t *pitch,
- int *octave)
+/* octave can optionally by NULL */
+static pitch_t
+_midi_to_pitch (unsigned char midi_note)
{
- *octave = midi_note / 12 - 1;
+ int octave = octave = midi_note / 12 - 1;
switch (midi_note % 12)
{
+ default:
case 0:
- *pitch = SCORE_PITCH_C;
+ return PITCH_LITERAL (C, NATURAL, octave);
break;
case 1:
- *pitch = SCORE_PITCH_Cs;
+ return PITCH_LITERAL (C, SHARP, octave);
break;
case 2:
- *pitch = SCORE_PITCH_D;
+ return PITCH_LITERAL (D, NATURAL, octave);
break;
case 3:
- *pitch = SCORE_PITCH_Ds;
+ return PITCH_LITERAL (D, SHARP, octave);
break;
case 4:
- *pitch = SCORE_PITCH_E;
+ return PITCH_LITERAL (E, NATURAL, octave);
break;
case 5:
- *pitch = SCORE_PITCH_F;
+ return PITCH_LITERAL (F, NATURAL, octave);
break;
case 6:
- *pitch = SCORE_PITCH_Fs;
+ return PITCH_LITERAL (F, SHARP, octave);
break;
case 7:
- *pitch = SCORE_PITCH_G;
+ return PITCH_LITERAL (G, NATURAL, octave);
break;
case 8:
- *pitch = SCORE_PITCH_Gs;
+ return PITCH_LITERAL (G, SHARP, octave);
break;
case 9:
- *pitch = SCORE_PITCH_A;
+ return PITCH_LITERAL (A, NATURAL, octave);
break;
case 10:
- *pitch = SCORE_PITCH_As;
+ return PITCH_LITERAL (A, SHARP, octave);
break;
case 11:
- *pitch = SCORE_PITCH_B;
+ return PITCH_LITERAL (B, NATURAL, octave);
break;
}
}
+/* Return true if 'a' and 'b' sound identical, (even if spelled differently)
+ *
+ * This comparison considers octaves as significant. So Bb and A# in
+ * the same octave are considered enharmonic, but Bb and A# in
+ * different octaves are not. */
+static int
+_pitches_are_enharmonic (pitch_t a, pitch_t b)
+{
+ return _pitch_to_midi (a) == _pitch_to_midi (b);
+}
+
/* Determine a chord name (if any) from the current notes pressed */
-typedef struct analyzed_note {
+typedef struct analyzed_pitch {
/* Original note being analzyed. */
- score_note_t *note;
+ pitch_t pitch;
/* Absolute pitch (expressed as midi number). */
int midi_pitch;
/* Pitch relative to bass note. */
int relative_pitch;
-} analyzed_note_t;
+} analyzed_pitch_t;
static int
-_compare_analyzed_note (const void *va, const void *vb)
+_compare_analyzed_pitch_by_midi_pitch (const void *va, const void *vb)
{
- const analyzed_note_t *a = va, *b = vb;
+ const analyzed_pitch_t *a = va, *b = vb;
return a->midi_pitch - b->midi_pitch;
}
static int
-_chord_signature_matches (analyzed_note_t *notes,
- int num_notes,
- int *signature_pitches,
- int num_signature_pitches)
+_compare_analyzed_pitch_by_relative_pitch (const void *va, const void *vb)
{
- int n, s;
+ const analyzed_pitch_t *a = va, *b = vb;
- for (n = 0, s = 0; s < num_signature_pitches; s++) {
- if (n >= num_notes)
- return 0;
- if (notes[n].relative_pitch != signature_pitches[s])
- return 0;
- n++;
- /* Skip repeated notes in chord being tested. */
- while (n < num_notes &&
- notes[n].relative_pitch == signature_pitches[s])
- {
- n++;
- }
+ return a->relative_pitch - b->relative_pitch;
+}
+
+typedef struct modified_degree
+{
+ int degree;
+ int modification;
+} modified_degree_t;
+
+static int
+_modified_degree_to_half_steps (const modified_degree_t *degree)
+{
+ int half_steps;
+ int scale_degree = degree->degree;
+
+ /* Restrict to actual degrees within a scale. */
+ if (scale_degree > 7)
+ scale_degree = (scale_degree % 8) + 1;
+
+ /* Number of half steps from root to specified degree within a
+ * diatonic scale. */
+ switch (scale_degree) {
+ case 1:
+ half_steps = 0;
+ break;
+ case 2:
+ half_steps = 2;
+ break;
+ case 3:
+ half_steps = 4;
+ break;
+ case 4:
+ half_steps = 5;
+ break;
+ case 5:
+ half_steps = 7;
+ break;
+ case 6:
+ half_steps = 9;
+ break;
+ case 7:
+ half_steps = 11;
+ break;
+ default:
+ fprintf (stderr, "Internal: Invalid degree %d\n", degree->degree);
+ exit (1);
+ break;
+ }
+
+ return half_steps + degree->modification;
+}
+
+/* Number of half steps from 'root' up to 'pitch' (that is, counting
+ * the steps up a chromatic scale), within the same octave. */
+static int
+_pitch_from_root_in_half_steps (pitch_t pitch, pitch_t root)
+{
+ int root_midi = _pitch_to_midi (root);
+ int pitch_midi = _pitch_to_midi (pitch);
+
+ while (pitch_midi < root_midi)
+ pitch_midi += 12;
+
+ return (pitch_midi - root_midi) % 12;
+}
+
+static int
+_chord_signature_matches (analyzed_pitch_t *pitches,
+ int num_pitches,
+ modified_degree_t *degrees,
+ int num_degrees,
+ int inversion,
+ pitch_t *root)
+{
+#define MAX_DEGREES 6
+ int relative_pitches[MAX_DEGREES];
+ int i, root_index;
+
+ assert (num_degrees <= MAX_DEGREES);
+
+ if (num_pitches != num_degrees)
+ return 0;
+
+ if (inversion >= num_degrees)
+ return 0;
+
+ /* We never spell simple intervals as inversions. */
+ if (num_degrees == 2 && inversion > 0)
+ return 0;
+
+ for (i = 0; i < num_degrees; i++) {
+ /* The num_degrees is in the addition just to ensure all
+ * inputs to the modulus operator remain positive. */
+ int index = (i + num_degrees - inversion) % num_degrees;
+
+ /* Again, adding a 12 to keep things positive. */
+ relative_pitches[index] =
+ (12 +
+ _modified_degree_to_half_steps (°rees[i]) -
+ _modified_degree_to_half_steps (°rees[inversion])) % 12;
+
}
- /* If there are fewer notes in the signature than in the chord,
- * then there is no match. */
- if (n < num_notes)
+ for (i = 0; i < num_pitches; i++)
+ if (pitches[i].relative_pitch != relative_pitches[i])
return 0;
+ root_index = (num_pitches - inversion) % num_pitches;
+ *root = pitches[root_index].pitch;
+
return 1;
}
+typedef struct chord_signature
+{
+ int num_degrees;
+ modified_degree_t degrees[MAX_DEGREES];
+ const char *name;
+} chord_signature_t;
+
+/* XXX: The superscript rise value should be relative to the current
+ * font size. Best would be for pango to support this. See:
+ *
+ * https://bugzilla.gnome.org/show_bug.cgi?id=708780
+ *
+ * For now, these are emipirically-derived values that look reasonable
+ * at the default size that score.c is using to draw the staff. If the
+ * user scales the staff up or down then these will look wrong.
+ */
+
+#define SUP "<span font='33' rise='30000'>"
+#define PUS "</span>"
+
+chord_signature_t signatures[] = {
+ /* Octave */
+ { 1, {{1, 0}}, "P8" },
+
+ /* Intervals */
+ { 2, {{1, 0}, {2, -1}}, "m2" },
+ { 2, {{1, 0}, {2, 0}}, "M2" },
+ { 2, {{1, 0}, {3, -1}}, "m3" },
+ { 2, {{1, 0}, {3, 0}}, "M3" },
+ { 2, {{1, 0}, {4, 0}}, "P4" },
+ { 2, {{1, 0}, {5, -1}}, "Tri-tone" },
+ { 2, {{1, 0}, {5, 0}}, "P5" },
+ { 2, {{1, 0}, {6, -1}}, "m6" },
+ { 2, {{1, 0}, {6, 0}}, "M6" },
+ { 2, {{1, 0}, {7, -1}}, "m7" },
+ { 2, {{1, 0}, {7, 0}}, "M7" },
+
+ /* Triads */
+ { 3, {{1, 0}, {4, 0}, {5, 0}}, "sus" },
+ { 3, {{1, 0}, {3, 0}, {5, +1}}, SUP "+" PUS },
+ { 3, {{1, 0}, {3, 0}, {5, 0}}, "" },
+ { 3, {{1, 0}, {3, -1}, {5, 0}}, "m" },
+ { 3, {{1, 0}, {3, -1}, {5, -1}}, "°" },
+ { 3, {{1, 0}, {2, 0}, {5, 0}}, "msus2" },
+
+ /* Seventh chords with no 3rd */
+ { 3, {{1, 0}, {5, +1}, {7, 0}}, SUP "+M7" PUS },
+ { 3, {{1, 0}, {5, +1}, {7, -1}}, SUP "+7" PUS },
+ { 3, {{1, 0}, {5, 0}, {7, 0}}, "M7" },
+ { 3, {{1, 0}, {5, 0}, {7, -1}}, "7" },
+ { 3, {{1, 0}, {5, -1}, {7, -1}}, "7♭5" },
+
+ /* Seventh chords with no 5th */
+ { 3, {{1, 0}, {4, 0}, {7, 0}}, "M7sus" },
+ { 3, {{1, 0}, {4, 0}, {7, -1}}, "7sus" },
+ { 3, {{1, 0}, {3, 0}, {7, 0}}, "M7" },
+ { 3, {{1, 0}, {3, 0}, {7, -1}}, "7" },
+ { 3, {{1, 0}, {3, -1}, {7, 0}}, "m" SUP "M7" PUS },
+ { 3, {{1, 0}, {3, -1}, {7, -1}}, "m7" },
+ { 3, {{1, 0}, {2, 0}, {7, 0}}, "m" SUP "M7" PUS "sus2" },
+ { 3, {{1, 0}, {2, 0}, {7, -1}}, "m7sus2" },
+
+ /* Sixth chords */
+ { 4, {{1, 0}, {4, 0}, {5, 0}, {6, 0}}, "6sus" },
+ { 4, {{1, 0}, {3, 0}, {5, 0}, {6, 0}}, "6" }, /* Ambiguous with m7 */
+ { 4, {{1, 0}, {3, -1}, {5, 0}, {6, 0}}, "m6" },
+ { 4, {{1, 0}, {2, 0}, {5, 0}, {6, 0}}, "m6sus2" },
+
+ /* Seventh chords */
+ { 4, {{1, 0}, {4, 0}, {5, +1}, {7, 0}}, SUP "+M7" PUS "sus" },
+ { 4, {{1, 0}, {4, 0}, {5, +1}, {7, -1}}, SUP "+7" PUS "sus" },
+ { 4, {{1, 0}, {4, 0}, {5, 0}, {7, 0}}, "M7sus" },
+ { 4, {{1, 0}, {4, 0}, {5, 0}, {7, -1}}, "7sus" },
+ { 4, {{1, 0}, {4, 0}, {5, -1}, {7, -1}}, "7♭5sus" },
+ { 4, {{1, 0}, {3, 0}, {5, +1}, {7, 0}}, SUP "+M7" PUS },
+ { 4, {{1, 0}, {3, 0}, {5, +1}, {7, -1}}, SUP "+7" PUS },
+ { 4, {{1, 0}, {3, 0}, {5, 0}, {7, 0}}, "M7" },
+ { 4, {{1, 0}, {3, 0}, {5, 0}, {7, -1}}, "7" },
+ { 4, {{1, 0}, {3, 0}, {5, -1}, {7, -1}}, "7♭5" },
+ { 4, {{1, 0}, {3, -1}, {5, 0}, {7, 0}}, "m" SUP "M7" PUS },
+ { 4, {{1, 0}, {3, -1}, {5, 0}, {7, -1}}, "m7" },
+ { 4, {{1, 0}, {3, -1}, {5, -1}, {7, 0}}, "°" SUP "M7" PUS },
+ { 4, {{1, 0}, {3, -1}, {5, -1}, {7, -1}}, "𝆩" SUP "7" PUS },
+ { 4, {{1, 0}, {3, -1}, {5, -1}, {7, -2}}, "°" SUP "7" PUS },
+ { 4, {{1, 0}, {2, 0}, {5, 0}, {7, 0}}, "m" SUP "M7" PUS "sus2" },
+ { 4, {{1, 0}, {2, 0}, {5, 0}, {7, -1}}, "m7sus2" },
+ { 4, {{1, 0}, {2, 0}, {5, -1}, {7, 0}}, "°" SUP "M7" PUS "sus2" },
+ { 4, {{1, 0}, {2, 0}, {5, -1}, {7, -1}}, "𝆩" SUP "7" PUS "sus2" },
+ { 4, {{1, 0}, {2, 0}, {5, -1}, {7, -2}}, "°" SUP "7" PUS "sus2" }, /* Ambiguous with 7 */
+
+ /* The sorting for chords with degree higher than 9 is funny
+ * to keep the array in degree order after reducing each
+ * degree to an actual scale degree, (9 -> 2, 11 -> 4, 13 ->
+ * 6) */
+
+ /* Ninth chords voiced with no 5th */
+ { 4, {{1, 0}, {9, 0}, {4, 0}, {7, 0}}, "M9sus" },
+ { 4, {{1, 0}, {9, 0}, {4, 0}, {7, -1}}, "9sus" },
+ { 4, {{1, 0}, {9, 0}, {3, 0}, {7, 0}}, "M9" },
+ { 4, {{1, 0}, {9, 0}, {3, 0}, {7, -1}}, "9" },
+ { 4, {{1, 0}, {9, 0}, {3, -1}, {7, 0}}, "m" SUP "M9" PUS },
+ { 4, {{1, 0}, {9, 0}, {3, -1}, {7, -1}}, "m9" },
+ { 4, {{1, 0}, {9, -1}, {3, -1}, {7, -1}}, "m♭9" },
+ { 4, {{1, 0}, {9, 0}, {3, -1}, {6, 0}}, "m6/9" },
+ { 4, {{1, 0}, {9, -1}, {3, -1}, {6, 0}}, "m6/♭9" },
+
+ /* Sixth plus 9 */
+ { 5, {{1, 0}, {9, 0}, {3, 0}, {5, 0}, {6, 0}}, "6/9" },
+ { 5, {{1, 0}, {9, 0}, {3, -1}, {5, 0}, {6, 0}}, "m6/9" },
+ { 5, {{1, 0}, {9, -1}, {3, -1}, {5, 0}, {6, 0}}, "m6/♭9" },
+
+ /* Seventh plus altered 9 */
+ { 5, {{1, 0}, {9, +1}, {3, 0}, {5, 0}, {7, -1}}, "7♯9" },
+ { 5, {{1, 0}, {9, -1}, {3, 0}, {5, 0}, {7, -1}}, "7♭9" },
+ { 5, {{1, 0}, {9, +1}, {3, 0}, {5, -1}, {7, -1}}, "7♭5♯9" },
+ { 5, {{1, 0}, {9, -1}, {3, 0}, {5, -1}, {7, -1}}, "7♭5♭9" },
+
+ /* Ninth chords */
+ { 5, {{1, 0}, {9, 0}, {4, 0}, {5, +1}, {7, 0}}, SUP "+M9" PUS "sus" },
+ { 5, {{1, 0}, {9, 0}, {4, 0}, {5, +1}, {7, -1}}, SUP "+9" PUS "sus" },
+ { 5, {{1, 0}, {9, 0}, {4, 0}, {5, 0}, {7, 0}}, "M9sus" },
+ { 5, {{1, 0}, {9, 0}, {4, 0}, {5, 0}, {7, -1}}, "9sus" },
+ { 5, {{1, 0}, {9, 0}, {3, 0}, {5, +1}, {7, 0}}, SUP "+M9" PUS },
+ { 5, {{1, 0}, {9, 0}, {3, 0}, {5, +1}, {7, -1}}, SUP "+9" PUS },
+ { 5, {{1, 0}, {9, 0}, {3, 0}, {5, 0}, {7, 0}}, "M9" },
+ { 5, {{1, 0}, {9, 0}, {3, 0}, {5, 0}, {7, -1}}, "9" },
+ { 5, {{1, 0}, {9, 0}, {3, -1}, {5, 0}, {7, 0}}, "m" SUP "M9" PUS },
+ { 5, {{1, 0}, {9, 0}, {3, -1}, {5, 0}, {7, -1}}, "m9" },
+ { 5, {{1, 0}, {9, -1}, {3, -1}, {5, 0}, {7, -1}}, "m♭9" },
+ { 5, {{1, 0}, {9, 0}, {3, 0}, {5, -1}, {7, 0}}, "M9" SUP "♭5" PUS },
+ { 5, {{1, 0}, {9, 0}, {3, 0}, {5, -1}, {7, -1}}, "9" SUP "♭5" PUS },
+ { 5, {{1, 0}, {9, 0}, {3, -1}, {5, -1}, {7, 0}}, "m" SUP "M9♭5" PUS },
+ { 5, {{1, 0}, {9, 0}, {3, -1}, {5, -1}, {7, -1}}, "𝆩" SUP "9" PUS },
+ { 5, {{1, 0}, {9, -1}, {3, -1}, {5, -1}, {7, -1}}, "𝆩" SUP "♭9" PUS },
+ { 5, {{1, 0}, {9, 0}, {3, -1}, {5, -1}, {7, -2}}, "°" SUP "9" PUS },
+ { 5, {{1, 0}, {9, -1}, {3, -1}, {5, -1}, {7, -2}}, "°" SUP "♭9" PUS },
+
+ /* Eleventh chords */
+ { 6, {{1, 0}, {9, 0}, {3, 0}, {11, 0}, {5, +1}, {7, 0}}, SUP "+M11" PUS },
+ { 6, {{1, 0}, {9, 0}, {3, 0}, {11, 0}, {5, +1}, {7, -1}}, SUP "+11" PUS },
+ { 6, {{1, 0}, {9, 0}, {3, 0}, {11, 0}, {5, 0}, {7, 0}}, "M11" },
+ { 6, {{1, 0}, {9, 0}, {3, 0}, {11, 0}, {5, 0}, {7, -1}}, "11" },
+ { 6, {{1, 0}, {9, 0}, {3, -1}, {11, 0}, {5, 0}, {7, 0}}, "m" SUP "M11" PUS },
+ { 6, {{1, 0}, {9, 0}, {3, -1}, {11, 0}, {5, 0}, {7, -1}}, "m11" },
+ { 6, {{1, 0}, {9, -1}, {3, -1}, {11, 0}, {5, -1}, {7, -1}}, "𝆩" SUP "11" PUS },
+ { 6, {{1, 0}, {9, -1}, {3, -1}, {11, -1}, {5, -1}, {7, -2}}, "°" SUP "11" PUS }
+};
+
static void
-scherzo_analyze_chord (scherzo_t *scherzo)
+scherzo_adjust_pitch_to_match_modified_degree (pitch_t *pitch,
+ pitch_t root,
+ modified_degree_t *degree)
+{
+ pitch_name_t name = PITCH_NAME (*pitch);
+ pitch_accidental_t accidental = PITCH_ACCIDENTAL (*pitch);
+ int octave = PITCH_OCTAVE (*pitch);
+ int degree_zero_based = (degree->degree - 1) % 7;
+ int degree_delta;
+
+ int note_degree_zero_based = name - PITCH_NAME (root);
+ if (note_degree_zero_based < 0)
+ note_degree_zero_based += 7;
+
+ if (note_degree_zero_based == degree_zero_based)
+ return;
+
+ degree_delta = note_degree_zero_based - degree_zero_based;
+ if (degree_delta > 3)
+ degree_delta = - (7 - degree_delta);
+ if (degree_delta < -3)
+ degree_delta = - (-7 - degree_delta);
+
+ if (abs (degree_delta) != 1) {
+ fprintf (stderr, "Internal error: Cannot adjust a note more than one degree (%d vs. %d).\n", note_degree_zero_based + 1, degree->degree);
+ exit (1);
+ }
+
+ if (degree_delta == -1) {
+ if (name == PITCH_NAME_B) {
+ name = PITCH_NAME_C;
+ octave++;
+ } else {
+ name++;
+ }
+ switch (name) {
+ case PITCH_NAME_D:
+ case PITCH_NAME_E:
+ case PITCH_NAME_G:
+ case PITCH_NAME_A:
+ case PITCH_NAME_B:
+ accidental -= 2;
+ break;
+ case PITCH_NAME_C:
+ case PITCH_NAME_F:
+ accidental -= 1;
+ break;
+ }
+ }
+
+ if (degree_delta == +1) {
+ if (name == PITCH_NAME_C) {
+ name = PITCH_NAME_B;
+ octave--;
+ } else {
+ name--;
+ }
+ switch (name) {
+ case PITCH_NAME_C:
+ case PITCH_NAME_D:
+ case PITCH_NAME_F:
+ case PITCH_NAME_G:
+ case PITCH_NAME_A:
+ accidental += 2;
+ break;
+ case PITCH_NAME_E:
+ case PITCH_NAME_B:
+ accidental += 1;
+ }
+ }
+
+ if (accidental < 0 || accidental > PITCH_ACCIDENTAL_DOUBLE_SHARP) {
+ fprintf (stderr, "Internal error: Trying to adjust an accidental out of range (degree_delta == %d (%d - %d), new accidental == %d).\n", degree_delta, note_degree_zero_based, degree_zero_based, accidental);
+ exit (1);
+ }
+
+ *pitch = PITCH (name, accidental, octave);
+}
+
+static void
+_spell_chord_by_signature (pitch_group_t *chord,
+ chord_signature_t *signature,
+ pitch_t root)
+{
+ int i, degree, note_half_steps, degree_half_steps;
+ int root_midi;
+
+ /* Sanitize root to eliminate things like double-flats,
+ * double-sharps, Cb, E#, etc. */
+ root_midi = _pitch_to_midi (root);
+ root = _midi_to_pitch (root_midi);
+
+ for (i = 0; i < chord->num_pitches; i++) {
+ note_half_steps = _pitch_from_root_in_half_steps (chord->pitches[i],
+ root);
+ for (degree = 0; degree < signature->num_degrees; degree++) {
+ degree_half_steps = _modified_degree_to_half_steps (&signature->degrees[degree]);
+ if (note_half_steps == degree_half_steps) {
+ scherzo_adjust_pitch_to_match_modified_degree (&chord->pitches[i],
+ root,
+ &signature->degrees[degree]);
+ break;
+ }
+ }
+ if (note_half_steps != degree_half_steps) {
+ fprintf (stderr, "Internal error: Chord and degree mis-match\n");
+ exit (1);
+ }
+ }
+}
+
+static void
+_analyze_chord (pitch_group_t *chord,
+ chord_signature_t **signature_ret,
+ pitch_t **root_ret)
{
void *local = talloc_new (NULL);
- analyzed_note_t *notes;
- unsigned i, num_notes = scherzo->num_notes_pressed;
- int bass_pitch;
- const char *chord_name = NULL;
-
- struct { int pitches[2]; const char *name; } intervals[] = {
- { {0, 1}, "Minor 2nd"},
- { {0, 2}, "Major 2nd"},
- { {0, 3}, "Minor 3rd"},
- { {0, 4}, "Major 3rd"},
- { {0, 5}, "Perfect 4th"},
- { {0, 6}, "Diminished 5th/Augmented 4th"},
- { {0, 7}, "Perfect 5th"},
- { {0, 8}, "Minor 6th"},
- { {0, 9}, "Major 6th"},
- { {0, 10}, "Minor 7th"},
- { {0, 11}, "Major 7th"}
- };
-
- struct { int pitches[3]; const char *name; } triads[] = {
- { {0, 4, 8}, "Augmented triad" },
- { {0, 4, 7}, "Major triad" },
- { {0, 3, 7}, "Minor triad" },
- { {0, 3, 6}, "Diminished triad" }
- };
-
- struct { int pitches[4]; const char *name; } sevenths[] = {
- { {0, 4, 8, 11}, "Augmented/major 7" },
- { {0, 4, 7, 11}, "Major 7" },
- { {0, 4, 7, 10}, "Dominant 7" },
- { {0, 3, 7, 11}, "Minor/major 7" },
- { {0, 3, 7, 10}, "Minor 7" },
- { {0, 3, 6, 10}, "Half-diminished 7" },
- { {0, 3, 6, 9}, "Diminished 7" },
- { {0, 4, 8, 10}, "Augmented 7" },
- { {0, 3, 6, 11}, "Diminished/major 7" },
- };
-
- if (scherzo->chord) {
- score_remove_chord (scherzo->chord);
- scherzo->chord = NULL;
- }
-
- if (num_notes <= 1)
+ analyzed_pitch_t *pitches;
+ int i, j, num_pitches;
+ int bass_pitch, inversion;
+ pitch_t root;
+ chord_signature_t *match = NULL;
+
+ /* Default to no-match for any early return */
+ *signature_ret = NULL;
+ *root_ret = NULL;
+
+ num_pitches = chord->num_pitches;
+
+ if (chord->num_pitches <= 1)
goto DONE;
- notes = talloc_array (local, analyzed_note_t, num_notes);
- if (notes == NULL)
+ pitches = talloc_array (local, analyzed_pitch_t, num_pitches);
+ if (pitches == NULL)
goto DONE;
- for (i = 0; i < num_notes; i++) {
- score_note_t *note = scherzo->notes_pressed[i];
- notes[i].note = note;
- notes[i].midi_pitch = _score_pitch_and_octave_to_midi (note->pitch,
- note->octave);
+ for (i = 0; i < num_pitches; i++) {
+ pitch_t pitch = chord->pitches[i];
+ pitches[i].pitch = pitch;
+ pitches[i].midi_pitch = _pitch_to_midi (pitch);
/* Relative pitch will be filled in after sorting. */
- notes[i].relative_pitch = 0;
+ pitches[i].relative_pitch = 0;
}
- qsort (notes, num_notes, sizeof (analyzed_note_t), _compare_analyzed_note);
+ /* First, sort by midi pitch to find the bass note. */
+ qsort (pitches, num_pitches, sizeof (analyzed_pitch_t),
+ _compare_analyzed_pitch_by_midi_pitch);
- bass_pitch = notes[0].midi_pitch;
+ bass_pitch = pitches[0].midi_pitch;
- for (i = 0; i < num_notes; i++) {
- notes[i].relative_pitch = notes[i].midi_pitch - bass_pitch;
+ /* With the bass note identified, we can find all relative pitches. */
+ for (i = 0; i < num_pitches; i++) {
+ pitches[i].relative_pitch = pitches[i].midi_pitch - bass_pitch;
+ while (pitches[i].relative_pitch >= 12)
+ pitches[i].relative_pitch -= 12;
}
- for (i = 0; i < ARRAY_SIZE (intervals); i++) {
- if (_chord_signature_matches (notes, num_notes, intervals[i].pitches, 2))
- chord_name = intervals[i].name;
+ /* Now, sort again by relative pitch. */
+ qsort (pitches, num_pitches, sizeof (analyzed_pitch_t),
+ _compare_analyzed_pitch_by_relative_pitch);
+
+ /* Finally, eliminate all duplicate notes. */
+ for (i = 0; i < num_pitches - 1; i++) {
+ if (pitches[i+1].relative_pitch == pitches[i].relative_pitch) {
+ j = i+1;
+ while (j < num_pitches &&
+ pitches[j].relative_pitch == pitches[i].relative_pitch)
+ {
+ j++;
+ }
+ /* The loop incremented j one past the last
+ * duplicate. Decrement so that it points to the
+ * last duplicate (and is guaranteed to not exceed
+ * the array bounds).*/
+ j--;
+
+ if (j < num_pitches - 1) {
+ memmove (&pitches[i+1], &pitches[j+1],
+ (num_pitches - j) * sizeof (analyzed_pitch_t));
+ }
+
+ num_pitches -= (j - i);
+ }
}
- for (i = 0; i < ARRAY_SIZE (triads); i++) {
- if (_chord_signature_matches (notes, num_notes, triads[i].pitches, 3))
- chord_name = triads[i].name;
+ for (inversion = 0; inversion < 4; inversion++) {
+ for (i = 0; i < ARRAY_SIZE (signatures); i++) {
+ if (_chord_signature_matches (pitches, num_pitches,
+ signatures[i].degrees,
+ signatures[i].num_degrees,
+ inversion, &root))
+ {
+ match = &signatures[i];
+ goto HAVE_MATCH;
+ }
+ }
}
-
- for (i = 0; i < ARRAY_SIZE(sevenths); i++) {
- if (_chord_signature_matches (notes, num_notes, sevenths[i].pitches, 4))
- chord_name = sevenths[i].name;
+HAVE_MATCH:
+
+ if (match) {
+ *signature_ret = match;
+ for (i = 0; i < chord->num_pitches; i++) {
+ if (chord->pitches[i] == root) {
+ *root_ret = &chord->pitches[i];
+ break;
+ }
+ }
}
- if (chord_name)
- scherzo->chord = score_add_chord (scherzo->treble, chord_name);
- else
- scherzo->chord = score_add_chord (scherzo->treble, "Unknown or not a chord");
-
DONE:
talloc_free (local);
}
-static score_note_t *
-scherzo_add_note (scherzo_t *scherzo, score_pitch_t pitch, int octave)
+static void
+pitch_group_init (void *ctx, pitch_group_t *group)
+{
+ group->ctx = ctx;
+ group->pitches = NULL;
+ group->size = 0;
+ group->num_pitches = 0;
+}
+
+static void
+pitch_group_add_pitch (pitch_group_t *group, pitch_t pitch)
{
- score_staff_t *staff;
- score_note_t *note;
int i;
- if (scherzo->challenge.note)
- staff = scherzo->challenge.staff;
- else
- staff = scherzo->treble;
+ /* Do nothing if pitch is already in group. */
+ for (i = 0; i < group->num_pitches; i++)
+ if (group->pitches[i] == pitch)
+ return;
- /* Do nothing if this note is already pressed. */
- for (i = 0; i < scherzo->num_notes_pressed; i++) {
- if (scherzo->notes_pressed[i]->pitch == pitch &&
- scherzo->notes_pressed[i]->octave == octave)
- {
- return scherzo->notes_pressed[i];
+ group->num_pitches++;
+
+ if (group->num_pitches > group->size) {
+ group->size++;
+ group->pitches = talloc_realloc (group->ctx, group->pitches,
+ pitch_t, group->size);
+
+ if (group->pitches == NULL) {
+ fprintf (stderr, "Out of memory.\n");
+ exit (1);
}
}
- note = score_add_note (staff, pitch, octave, SCORE_DURATION_WHOLE);
+ group->pitches[group->num_pitches - 1] = pitch;
+}
- scherzo->num_notes_pressed++;
- scherzo->notes_pressed = talloc_realloc (scherzo->ctx,
- scherzo->notes_pressed,
- score_note_t*,
- scherzo->num_notes_pressed);
- if (scherzo->notes_pressed == NULL) {
- fprintf (stderr, "Out of memory.\n");
+static void
+pitch_group_remove_pitch_at (pitch_group_t *group, int i)
+{
+ if (i > group->num_pitches) {
+ fprintf (stderr, "Internal error: Cannot remove pitch %d from group with only %d %s\n",
+ i, group->num_pitches,
+ group->num_pitches == 1 ? "pitch" : "pitches");
exit (1);
}
- scherzo->notes_pressed[scherzo->num_notes_pressed - 1] = note;
+ if (i < group->num_pitches - 1) {
+ memmove (group->pitches + i, group->pitches + i + 1,
+ (group->num_pitches - 1 - i) * sizeof (pitch_t));
+ }
+
+ group->num_pitches--;
+}
+
+/* Remove a 'pitch' from 'group', (including any enharmonic pitch)
+ * See also: pitch_group_remove_pitch
+ */
+static void
+pitch_group_remove_pitch_enharmonic (pitch_group_t *group, pitch_t pitch)
+{
+ int i;
+
+ for (i = 0; i < group->num_pitches; i++)
+ if (_pitches_are_enharmonic (group->pitches[i], pitch))
+ pitch_group_remove_pitch_at (group, i);
+}
- scherzo_analyze_chord (scherzo);
+/* Remove an exactly-matching pitch from 'group'
+ * See also: pitch_group_remove_pitch_enharmonic
+ *
+static void
+pitch_group_remove_pitch (pitch_group_t *group, pitch_t pitch)
+{
+ int i;
- return note;
+ for (i = 0; i < group->num_pitches; i++)
+ if (group->pitches[i] == pitch)
+ pitch_group_remove_pitch_at (group, i);
}
+*/
+
+static void
+scherzo_update_notes_and_chord (scherzo_t *scherzo)
+{
+ if (scherzo->notes_pressed.num_pitches == 0 &&
+ scherzo->notes_pedaled.num_pitches == 0)
+ {
+ score_remove_notes (scherzo->score);
+ score_remove_chords (scherzo->score);
+
+ gtk_widget_queue_draw (scherzo->window);
+ }
+}
static void
-scherzo_remove_note (scherzo_t *scherzo, score_pitch_t pitch, int octave)
+scherzo_press_note (scherzo_t *scherzo, pitch_t pitch)
{
- score_note_t *note;
+ void *local = talloc_new (NULL);
+ pitch_group_t *chord;
+ chord_signature_t *signature;
+ char *chord_name = NULL;
+ pitch_t *root;
int i;
- for (i = 0; i < scherzo->num_notes_pressed; i++) {
- note = scherzo->notes_pressed[i];
- if (note->pitch == pitch && note->octave == octave) {
- score_remove_note (note);
- if (i < scherzo->num_notes_pressed - 1) {
- memmove (scherzo->notes_pressed + i,
- scherzo->notes_pressed + i + 1,
- (scherzo->num_notes_pressed - 1 - i) * sizeof (score_note_t*));
- }
- scherzo->num_notes_pressed--;
- i--;
+ /* Do nothing if this note is already pressed. */
+ for (i = 0; i < scherzo->notes_pressed.num_pitches; i++)
+ if (scherzo->notes_pressed.pitches[i] == pitch)
+ return;
+
+ pitch_group_add_pitch (&scherzo->notes_pressed, pitch);
+
+ if (scherzo->pedal_pressed)
+ pitch_group_add_pitch (&scherzo->notes_pedaled, pitch);
+
+ /* Remove all notes/chords from score, then add current notes. */
+ score_remove_notes (scherzo->score);
+ score_remove_chords (scherzo->score);
+
+ if (scherzo->pedal_pressed)
+ chord = &scherzo->notes_pedaled;
+ else
+ chord = &scherzo->notes_pressed;
+
+ _analyze_chord (chord, &signature, &root);
+
+ if (signature) {
+ /* Don't print root pitch for octaves and inversions,
+ * (since a pitch name alone looks like a major triad) */
+ if (signature->num_degrees < 3) {
+ chord_name = talloc_strdup (local, signature->name);
+ } else {
+ _spell_chord_by_signature (&scherzo->notes_pressed,
+ signature, *root);
+ _spell_chord_by_signature (&scherzo->notes_pedaled,
+ signature, *root);
+
+ chord_name = talloc_asprintf (local, "%s%s",
+ pitch_string (*root),
+ signature->name);
}
+ } else if (chord->num_pitches > 2) {
+ chord_name = talloc_strdup (local, "?");
}
- scherzo_analyze_chord (scherzo);
+ if (chord_name)
+ scherzo->chord = score_add_chord (scherzo->treble, chord_name);
+
+ for (i = 0; i < scherzo->notes_pressed.num_pitches; i++)
+ {
+ score_add_note (scherzo->score, scherzo->notes_pressed.pitches[i],
+ SCORE_DURATION_WHOLE);
+ }
+
+ for (i = 0; i < scherzo->notes_pedaled.num_pitches; i++)
+ {
+ score_add_note (scherzo->score, scherzo->notes_pedaled.pitches[i],
+ SCORE_DURATION_WHOLE);
+ }
+
+ talloc_free (local);
}
-static score_note_t *
-scherzo_add_note_midi (scherzo_t *scherzo, unsigned char midi_note)
+static void
+scherzo_release_note (scherzo_t *scherzo, pitch_t pitch)
{
- score_pitch_t pitch;
- int octave;
+ pitch_group_remove_pitch_enharmonic (&scherzo->notes_pressed, pitch);
+
+ if (scherzo->notes_pressed.num_pitches == 0)
+ scherzo_update_notes_and_chord (scherzo);
+}
+
+static pitch_t
+scherzo_press_note_midi (scherzo_t *scherzo, unsigned char midi_note)
+{
+ pitch_t pitch = _midi_to_pitch (midi_note);
- _midi_to_score_pitch_and_octave (midi_note, &pitch, &octave);
+ scherzo_press_note (scherzo, pitch);
- return scherzo_add_note (scherzo, pitch, octave);
+ return pitch;
}
+static void
+scherzo_release_note_midi (scherzo_t *scherzo, unsigned char midi_note)
+{
+ scherzo_release_note (scherzo, _midi_to_pitch (midi_note));
+}
static void
-scherzo_remove_note_midi (scherzo_t *scherzo, unsigned char midi_note)
+scherzo_press_pedal (scherzo_t *scherzo)
{
- score_pitch_t pitch;
- int octave;
-
- _midi_to_score_pitch_and_octave (midi_note, &pitch, &octave);
+ int i;
+
+ if (scherzo->pedal_pressed)
+ return;
+
+ scherzo->pedal_pressed = 1;
- scherzo_remove_note (scherzo, pitch, octave);
+ /* Copy all pressed notes to pedaled notes */
+ for (i = 0; i < scherzo->notes_pressed.num_pitches; i++)
+ pitch_group_add_pitch (&scherzo->notes_pedaled, scherzo->notes_pressed.pitches[i]);
}
-void
+static void
+scherzo_release_pedal (scherzo_t *scherzo)
+{
+ int i;
+
+ if (! scherzo->pedal_pressed)
+ return;
+
+ /* Remove all previously pedaled notes. */
+ for (i = scherzo->notes_pedaled.num_pitches - 1; i >=0; i--)
+ pitch_group_remove_pitch_at (&scherzo->notes_pedaled, i);
+
+ scherzo->pedal_pressed = 0;
+
+ scherzo_update_notes_and_chord (scherzo);
+}
+
+static void
_select_challenge (scherzo_t *scherzo)
{
category_t *category_unused;
bool_t introduced_unused;
item_t *item;
challenge_t *challenge = &scherzo->challenge;
- score_pitch_t pitch;
+ pitch_name_t pitch_name;
int octave;
char *s;
- if (challenge->note) {
- score_remove_note (challenge->note);
- challenge->note = NULL;
- }
-
mnemon_select_item (&scherzo->mnemon,
&challenge->bin,
&challenge->item_index,
switch (*s) {
case 'C':
- pitch = SCORE_PITCH_VALUE(C, NATURAL);
+ pitch_name = PITCH_NAME_C;
break;
case 'D':
- pitch = SCORE_PITCH_VALUE(D, NATURAL);
+ pitch_name = PITCH_NAME_D;
break;
case 'E':
- pitch = SCORE_PITCH_VALUE(E, NATURAL);
+ pitch_name = PITCH_NAME_E;
break;
case 'F':
- pitch = SCORE_PITCH_VALUE(F, NATURAL);
+ pitch_name = PITCH_NAME_F;
break;
case 'G':
- pitch = SCORE_PITCH_VALUE(G, NATURAL);
+ pitch_name = PITCH_NAME_G;
break;
case 'A':
- pitch = SCORE_PITCH_VALUE(A, NATURAL);
+ pitch_name = PITCH_NAME_A;
break;
case 'B':
- pitch = SCORE_PITCH_VALUE(B, NATURAL);
+ pitch_name = PITCH_NAME_B;
break;
default:
fprintf (stderr, "Malformed pitch name: %s (expected 'A' - 'G')\n", s);
octave = *s - '0';
- challenge->note = score_add_note (challenge->staff, pitch, octave,
- SCORE_DURATION_WHOLE);
+ challenge->pitch = PITCH (pitch_name, PITCH_ACCIDENTAL_NATURAL, octave);
+
+ challenge->active = 1;
challenge->satisfied = 0;
challenge->mistaken = 0;
}
/* Determine whether the user hit the correct note. */
static void
-_judge_note (scherzo_t *scherzo, score_note_t *note)
+_judge_pitch (scherzo_t *scherzo, pitch_t pitch)
{
challenge_t *challenge = &scherzo->challenge;
- if (! scherzo->challenge.note) {
- score_set_note_color_rgb (note, 0.0, 0.0, 0.0); /* black */
+ if (! challenge->active)
return;
- }
- if (note->pitch == challenge->note->pitch &&
- note->octave == challenge->note->octave)
- {
+ if (pitch == challenge->pitch)
challenge->satisfied = 1;
- score_set_note_color_rgb (note, 18/256., 130/256., 28/256.); /* green */
- }
else
- {
challenge->mistaken = 1;
- score_set_note_color_rgb (note, 184/256., 4/256., 22/256.); /* red */
- }
}
/* If the user got the right note (eventually), then score it in
{
challenge_t *challenge = &scherzo->challenge;
- if (! challenge->note)
+ if (! challenge->active)
return;
if (! challenge->satisfied)
scherzo_t *scherzo = user_data;
ssize_t remaining;
snd_seq_event_t event;
- score_note_t *note;
+ pitch_t pitch;
int need_redraw = FALSE;
remaining = read (scherzo->midi_fd, buf, MIDI_BUF_SIZE);
/* Incomplete event. Nothing to do. */
break;
case SND_SEQ_EVENT_NOTEON:
- note = scherzo_add_note_midi (scherzo, event.data.note.note);
- _judge_note (scherzo, note);
+ pitch = scherzo_press_note_midi (scherzo, event.data.note.note);
+ _judge_pitch (scherzo, pitch);
need_redraw = TRUE;
break;
case SND_SEQ_EVENT_NOTEOFF:
- scherzo_remove_note_midi (scherzo, event.data.note.note);
+ scherzo_release_note_midi (scherzo, event.data.note.note);
_score_challenge (scherzo);
need_redraw = TRUE;
break;
case SND_SEQ_EVENT_SENSING:
/* Ignore for now as my piano sends a constant stream of these. */
break;
+ case SND_SEQ_EVENT_CONTROLLER:
+ /* XXX: My piano gives me 64 for the sustain pedal, is
+ * that universal? */
+ if (event.data.control.param == 64) {
+ if (event.data.control.value == 0)
+ scherzo_release_pedal (scherzo);
+ else
+ scherzo_press_pedal (scherzo);
+ } else {
+ fprintf (stderr, "Fixme: Unhandled MIDI Control event (param=%d, value=%d)\n",
+ event.data.control.param, event.data.control.value);
+ }
+ break;
default:
fprintf (stderr, "Fixme: Do not yet know how to handle MIDI event %d\n",
event.type);
scherzo.chord = NULL;
- scherzo.num_notes_pressed = 0;
- scherzo.notes_pressed = NULL;
+ /* Default to octave 4 for computer keyboard keypresses. */
+ scherzo.keyboard_octave = 4;
+
+ pitch_group_init (scherzo.ctx, &scherzo.notes_pressed);
+ pitch_group_init (scherzo.ctx, &scherzo.notes_pedaled);
+
+ scherzo.pedal_pressed = 0;
+
+ scherzo.key = PITCH_CLASS_LITERAL (C, NATURAL);
+ score_set_key (scherzo.score, scherzo.key);
mnemon_init (&scherzo.mnemon);
/* XXX: Should create a default file if one cannot be loaded. */
mnemon_load_category (&scherzo.mnemon, "scherzo-notes");
- scherzo.challenge.note = NULL;
+ scherzo.challenge.active = 0;
/*
_select_challenge (&scherzo);
*/
projects / scherzo / blobdiff