int mistaken;
} challenge_t;
+typedef struct note_group
+{
+ void *ctx;
+ score_note_t **notes;
+ int size;
+ int num_notes;
+} note_group_t;
+
typedef struct scherzo
{
void *ctx;
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;
+ score_pitch_accidental_t keyboard_accidental;
+
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;
+ note_group_t notes_pressed;
+ note_group_t notes_pedaled;
+
+ int pedal_pressed;
} scherzo_t;
/* Forward declarations. */
static score_note_t *
-scherzo_add_note (scherzo_t *scherzo, score_pitch_t pitch, int octave);
+scherzo_press_note (scherzo_t *scherzo, score_pitch_t pitch, int octave);
+
+static void
+scherzo_release_note (scherzo_t *scherzo, score_pitch_t pitch, int octave);
+
+static void
+scherzo_press_pedal (scherzo_t *scherzo);
static void
-scherzo_remove_note (scherzo_t *scherzo, score_pitch_t pitch, int octave);
+scherzo_release_pedal (scherzo_t *scherzo);
static void
_judge_note (scherzo_t *scherzo, score_note_t *note);
{
scherzo_t *scherzo = user_data;
int octave;
+ /* Initialize to keep the compiler quiet. */
+ score_pitch_name_t pitch_name = SCORE_PITCH_C;
score_pitch_t pitch;
if (scherzo->challenge.note)
octave = scherzo->challenge.note->octave;
else
- octave = 4;
+ octave = scherzo->keyboard_octave;
switch (key->keyval) {
case GDK_KEY_plus:
return FALSE;
case GDK_KEY_c:
case GDK_KEY_C:
- pitch = SCORE_PITCH_C;
+ pitch_name = SCORE_PITCH_NAME_C;
break;
case GDK_KEY_d:
case GDK_KEY_D:
- pitch = SCORE_PITCH_D;
+ pitch_name = SCORE_PITCH_NAME_D;
break;
case GDK_KEY_e:
case GDK_KEY_E:
- pitch = SCORE_PITCH_E;
+ pitch_name = SCORE_PITCH_NAME_E;
break;
case GDK_KEY_f:
case GDK_KEY_F:
- pitch = SCORE_PITCH_F;
+ pitch_name = SCORE_PITCH_NAME_F;
break;
case GDK_KEY_g:
case GDK_KEY_G:
- pitch = SCORE_PITCH_G;
+ pitch_name = SCORE_PITCH_NAME_G;
break;
case GDK_KEY_a:
case GDK_KEY_A:
- pitch = SCORE_PITCH_A;
+ pitch_name = SCORE_PITCH_NAME_A;
break;
case GDK_KEY_b:
case GDK_KEY_B:
- pitch = SCORE_PITCH_B;
+ pitch_name = SCORE_PITCH_NAME_B;
+ 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;
+ case GDK_KEY_Up:
+ if (scherzo->keyboard_accidental < SCORE_PITCH_ACCIDENTAL_DOUBLE_SHARP)
+ scherzo->keyboard_accidental++;
+ break;
+ case GDK_KEY_Down:
+ if (scherzo->keyboard_accidental > SCORE_PITCH_ACCIDENTAL_DOUBLE_FLAT)
+ scherzo->keyboard_accidental--;
break;
}
+ pitch = SCORE_PITCH (pitch_name, scherzo->keyboard_accidental);
+
if ((key->keyval >= GDK_KEY_A && key->keyval <= GDK_KEY_G) ||
(key->keyval >= GDK_KEY_a && key->keyval <= GDK_KEY_g))
{
score_note_t *note;
- note = scherzo_add_note (scherzo, pitch, octave);
+ note = scherzo_press_note (scherzo, pitch, octave);
_judge_note (scherzo, note);
gtk_widget_queue_draw (scherzo->window);
{
scherzo_t *scherzo = user_data;
int octave;
+ /* Initialize to keep the compiler quiet. */
+ score_pitch_name_t pitch_name = SCORE_PITCH_NAME_C;
score_pitch_t pitch;
if (scherzo->challenge.note)
octave = scherzo->challenge.note->octave;
else
- octave = 4;
+ octave = scherzo->keyboard_octave;
switch (key->keyval) {
case GDK_KEY_c:
case GDK_KEY_C:
- pitch = SCORE_PITCH_C;
+ pitch_name = SCORE_PITCH_NAME_C;
break;
case GDK_KEY_d:
case GDK_KEY_D:
- pitch = SCORE_PITCH_D;
+ pitch_name = SCORE_PITCH_NAME_D;
break;
case GDK_KEY_e:
case GDK_KEY_E:
- pitch = SCORE_PITCH_E;
+ pitch_name = SCORE_PITCH_NAME_E;
break;
case GDK_KEY_f:
case GDK_KEY_F:
- pitch = SCORE_PITCH_F;
+ pitch_name = SCORE_PITCH_NAME_F;
break;
case GDK_KEY_g:
case GDK_KEY_G:
- pitch = SCORE_PITCH_G;
+ pitch_name = SCORE_PITCH_NAME_G;
break;
case GDK_KEY_a:
case GDK_KEY_A:
- pitch = SCORE_PITCH_A;
+ pitch_name = SCORE_PITCH_NAME_A;
break;
case GDK_KEY_b:
case GDK_KEY_B:
- pitch = SCORE_PITCH_B;
+ pitch_name = SCORE_PITCH_NAME_B;
+ break;
+ case GDK_KEY_space:
+ scherzo_release_pedal (scherzo);
break;
}
+ pitch = SCORE_PITCH (pitch_name, scherzo->keyboard_accidental);
+
if ((key->keyval >= GDK_KEY_A && key->keyval <= GDK_KEY_G) ||
(key->keyval >= GDK_KEY_a && key->keyval <= GDK_KEY_g))
{
- scherzo_remove_note (scherzo, pitch, octave);
+ scherzo_release_note (scherzo, pitch, octave);
_score_challenge (scherzo);
gtk_widget_queue_draw (scherzo->window);
return midi_note;
}
+/* octave can optionally by NULL */
static void
_midi_to_score_pitch_and_octave (unsigned char midi_note,
score_pitch_t *pitch,
int *octave)
{
- *octave = midi_note / 12 - 1;
+ if (octave)
+ *octave = midi_note / 12 - 1;
switch (midi_note % 12)
{
} analyzed_note_t;
static int
-_compare_analyzed_note (const void *va, const void *vb)
+_compare_analyzed_note_by_midi_pitch (const void *va, const void *vb)
{
const analyzed_note_t *a = va, *b = vb;
return a->midi_pitch - b->midi_pitch;
}
+static int
+_compare_analyzed_note_by_relative_pitch (const void *va, const void *vb)
+{
+ const analyzed_note_t *a = va, *b = vb;
+
+ 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). */
+static int
+_pitch_from_root_in_half_steps (score_pitch_t pitch, score_pitch_t root)
+{
+ int root_midi = _score_pitch_and_octave_to_midi (root, 0);
+ int pitch_midi = _score_pitch_and_octave_to_midi (pitch, 0);
+
+ if (pitch_midi < root_midi)
+ pitch_midi += 12;
+
+ if (pitch_midi < root_midi) {
+ fprintf (stderr, "Internal error: midi values differ by more than expected.\n");
+ exit (1);
+ }
+
+ return (pitch_midi - root_midi) % 12;
+}
+
static int
_chord_signature_matches (analyzed_note_t *notes,
int num_notes,
- int *signature_pitches,
- int num_signature_pitches)
+ modified_degree_t *degrees,
+ int num_degrees,
+ int inversion,
+ score_pitch_t *root)
{
- int n, s;
+#define MAX_DEGREES 6
+ int relative_pitches[MAX_DEGREES];
+ int i, root_index;
- for (n = 0, s = 0; s < num_signature_pitches; s++) {
- if (n >= num_notes)
- return 0;
- if (notes[n].relative_pitch != signature_pitches[s])
+ assert (num_degrees <= MAX_DEGREES);
+
+ if (num_notes != 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;
+
+ }
+
+ for (i = 0; i < num_notes; i++)
+ if (notes[i].relative_pitch != relative_pitches[i])
return 0;
- n++;
- /* Skip repeated notes in chord being tested. */
- while (n < num_notes &&
- notes[n].relative_pitch == signature_pitches[s])
- {
- n++;
+
+ root_index = (num_notes - inversion) % num_notes;
+ *root = notes[root_index].note->pitch;
+
+ return 1;
+}
+
+static const char *
+_pitch_str (score_pitch_t pitch)
+{
+ switch (pitch) {
+ case SCORE_PITCH_Cff:
+ return "C𝄫";
+ case SCORE_PITCH_Cf:
+ return "C♭";
+ case SCORE_PITCH_C:
+ return "C";
+ case SCORE_PITCH_Cs:
+ return "C♯";
+ case SCORE_PITCH_Css:
+ return "C𝄪";
+ case SCORE_PITCH_Dff:
+ return "D𝄫";
+ case SCORE_PITCH_Df:
+ return "D♭";
+ case SCORE_PITCH_D:
+ return "D";
+ case SCORE_PITCH_Ds:
+ return "D♯";
+ case SCORE_PITCH_Dss:
+ return "D𝄪";
+ case SCORE_PITCH_Eff:
+ return "E𝄫";
+ case SCORE_PITCH_Ef:
+ return "E♭";
+ case SCORE_PITCH_E:
+ return "E";
+ case SCORE_PITCH_Es:
+ return "E♯";
+ case SCORE_PITCH_Ess:
+ return "E𝄪";
+ case SCORE_PITCH_Fff:
+ return "F𝄫";
+ case SCORE_PITCH_Ff:
+ return "F♭";
+ case SCORE_PITCH_F:
+ return "F";
+ case SCORE_PITCH_Fs:
+ return "F♯";
+ case SCORE_PITCH_Fss:
+ return "F𝄪";
+ case SCORE_PITCH_Gff:
+ return "G𝄫";
+ case SCORE_PITCH_Gf:
+ return "G♭";
+ case SCORE_PITCH_G:
+ return "G";
+ case SCORE_PITCH_Gs:
+ return "G♯";
+ case SCORE_PITCH_Gss:
+ return "G𝄪";
+ case SCORE_PITCH_Aff:
+ return "A𝄫";
+ case SCORE_PITCH_Af:
+ return "A♭";
+ case SCORE_PITCH_A:
+ return "A";
+ case SCORE_PITCH_As:
+ return "A♯";
+ case SCORE_PITCH_Ass:
+ return "A𝄪";
+ case SCORE_PITCH_Bff:
+ return "B𝄫";
+ case SCORE_PITCH_Bf:
+ return "B♭";
+ case SCORE_PITCH_B:
+ return "B";
+ case SCORE_PITCH_Bs:
+ return "B♯";
+ case SCORE_PITCH_Bss:
+ return "B𝄪";
+ }
+
+ fprintf (stderr, "Internal error: Unknown pitch %d\n", pitch);
+ exit (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_adjust_note_to_match_modified_degree (score_note_t *note,
+ score_pitch_t root,
+ modified_degree_t *degree)
+{
+ score_pitch_name_t name = SCORE_PITCH_NAME (note->pitch);
+ score_pitch_accidental_t accidental = SCORE_PITCH_ACCIDENTAL (note->pitch);
+ int degree_zero_based = (degree->degree - 1) % 7;
+ int degree_delta;
+
+ int note_degree_zero_based = name - SCORE_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 == SCORE_PITCH_NAME_B) {
+ name = SCORE_PITCH_NAME_C;
+ note->octave++;
+ } else {
+ name++;
+ }
+ switch (name) {
+ case SCORE_PITCH_NAME_D:
+ case SCORE_PITCH_NAME_E:
+ case SCORE_PITCH_NAME_G:
+ case SCORE_PITCH_NAME_A:
+ case SCORE_PITCH_NAME_B:
+ accidental -= 2;
+ break;
+ case SCORE_PITCH_NAME_C:
+ case SCORE_PITCH_NAME_F:
+ accidental -= 1;
+ break;
}
}
- return 1;
+ if (degree_delta == +1) {
+ if (name == SCORE_PITCH_NAME_C) {
+ name = SCORE_PITCH_NAME_B;
+ note->octave--;
+ } else {
+ name--;
+ }
+ switch (name) {
+ case SCORE_PITCH_NAME_C:
+ case SCORE_PITCH_NAME_D:
+ case SCORE_PITCH_NAME_F:
+ case SCORE_PITCH_NAME_G:
+ case SCORE_PITCH_NAME_A:
+ accidental += 2;
+ break;
+ case SCORE_PITCH_NAME_E:
+ case SCORE_PITCH_NAME_B:
+ accidental += 1;
+ }
+ }
+
+ if (accidental < 0 || accidental > SCORE_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);
+ }
+
+ note->pitch = SCORE_PITCH (name, accidental);
+}
+
+static void
+_spell_chord_by_signature (note_group_t *chord,
+ int num_notes,
+ chord_signature_t *signature,
+ score_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 = _score_pitch_and_octave_to_midi (root, 0);
+ _midi_to_score_pitch_and_octave (root_midi, &root, NULL);
+
+ for (i = 0; i < num_notes; i++) {
+ note_half_steps = _pitch_from_root_in_half_steps (chord->notes[i]->pitch,
+ 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_note_to_match_modified_degree (chord->notes[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
{
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[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" },
- };
+ note_group_t *note_group;
+ unsigned i, j, num_notes;
+ int bass_pitch, inversion;
+ score_pitch_t root;
+ chord_signature_t *match = NULL;
+ char *chord_name;
+
+ if (scherzo->pedal_pressed)
+ note_group = &scherzo->notes_pedaled;
+ else
+ note_group = &scherzo->notes_pressed;
+
+ num_notes = note_group->num_notes;
if (scherzo->chord) {
score_remove_chord (scherzo->chord);
scherzo->chord = NULL;
}
- if (num_notes == 0)
+ if (num_notes <= 1)
goto DONE;
notes = talloc_array (local, analyzed_note_t, num_notes);
goto DONE;
for (i = 0; i < num_notes; i++) {
- score_note_t *note = scherzo->notes_pressed[i];
+ score_note_t *note = note_group->notes[i];
notes[i].note = note;
notes[i].midi_pitch = _score_pitch_and_octave_to_midi (note->pitch,
note->octave);
notes[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 (notes, num_notes, sizeof (analyzed_note_t),
+ _compare_analyzed_note_by_midi_pitch);
bass_pitch = notes[0].midi_pitch;
+ /* With the bass note identified, we can find all relative pitches. */
for (i = 0; i < num_notes; i++) {
notes[i].relative_pitch = notes[i].midi_pitch - bass_pitch;
+ while (notes[i].relative_pitch >= 12)
+ notes[i].relative_pitch -= 12;
}
- for (i = 0; i < ARRAY_SIZE (triads); i++) {
- if (_chord_signature_matches (notes, num_notes, triads[i].pitches, 3))
- chord_name = triads[i].name;
+ /* Now, sort again by relative pitch. */
+ qsort (notes, num_notes, sizeof (analyzed_note_t),
+ _compare_analyzed_note_by_relative_pitch);
+
+ /* Finally, eliminate all duplicate notes. */
+ for (i = 0; i < num_notes - 1; i++) {
+ if (notes[i+1].relative_pitch == notes[i].relative_pitch) {
+ j = i+1;
+ while (j < num_notes &&
+ notes[j].relative_pitch == notes[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_notes - 1) {
+ memmove (¬es[i+1], ¬es[j+1],
+ (num_notes - j) * sizeof (analyzed_note_t));
+ }
+
+ num_notes -= (j - i);
+ }
}
- for (i = 0; i < ARRAY_SIZE(sevenths); i++) {
- if (_chord_signature_matches (notes, num_notes, sevenths[i].pitches, 4))
- chord_name = sevenths[i].name;
+ for (inversion = 0; inversion < 4; inversion++) {
+ for (i = 0; i < ARRAY_SIZE (signatures); i++) {
+ if (_chord_signature_matches (notes, num_notes,
+ signatures[i].degrees,
+ signatures[i].num_degrees,
+ inversion, &root))
+ {
+ match = &signatures[i];
+ goto HAVE_MATCH;
+ }
+ }
}
+HAVE_MATCH:
+
+ chord_name = (char *) signatures[i].name;
+
+ if (match) {
+ /* Don't print root pitch for octaves and inversions,
+ * (since a pitch name alone looks like a major triad) */
+ if (num_notes < 3) {
+ chord_name = talloc_strdup (local, chord_name);
+ } else {
+ chord_name = talloc_asprintf (local, "%s%s",
+ _pitch_str (root),
+ chord_name);
+ }
- 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");
+ _spell_chord_by_signature (note_group, num_notes,
+ match, root);
+ } else {
+ chord_name = talloc_strdup (local, "Unknown chord");
+ }
+
+ scherzo->chord = score_add_chord (scherzo->treble, chord_name);
DONE:
talloc_free (local);
}
+static void
+note_group_init (void *ctx, note_group_t *group)
+{
+ group->ctx = ctx;
+ group->notes = NULL;
+ group->size = 0;
+ group->num_notes = 0;
+}
+
+static void
+note_group_add_note (note_group_t *group, score_note_t *note)
+{
+ int i;
+
+ /* Do nothing if note is already in group. */
+ for (i = 0; i < group->num_notes; i++) {
+ if (group->notes[i]->pitch == note->pitch &&
+ group->notes[i]->octave == note->octave)
+ {
+ return;
+ }
+ }
+
+ group->num_notes++;
+
+ if (group->num_notes > group->size) {
+ group->size++;
+ group->notes = talloc_realloc (group->ctx, group->notes,
+ score_note_t*, group->size);
+
+ if (group->notes == NULL) {
+ fprintf (stderr, "Out of memory.\n");
+ exit (1);
+ }
+ }
+
+ group->notes[group->num_notes - 1] = note;
+}
+
+static void
+note_group_remove_note_at (note_group_t *group, int i)
+{
+ if (i >= group->num_notes) {
+ fprintf (stderr, "Internal error: No note to remove at index %d\n", i);
+ exit (1);
+ }
+
+ if (i < group->num_notes - 1) {
+ memmove (group->notes + i, group->notes + i + 1,
+ (group->num_notes - 1 - i) * sizeof (score_note_t*));
+ }
+ group->num_notes--;
+}
+
static score_note_t *
-scherzo_add_note (scherzo_t *scherzo, score_pitch_t pitch, int octave)
+scherzo_press_note (scherzo_t *scherzo, score_pitch_t pitch, int octave)
{
score_staff_t *staff;
score_note_t *note;
int i;
- if (scherzo->challenge.note)
+ if (scherzo->challenge.note) {
staff = scherzo->challenge.staff;
- else
+ } else if (octave >= 4) {
staff = scherzo->treble;
+ } else {
+ staff = scherzo->bass;
+ }
/* 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)
+ for (i = 0; i < scherzo->notes_pressed.num_notes; i++) {
+ if (scherzo->notes_pressed.notes[i]->pitch == pitch &&
+ scherzo->notes_pressed.notes[i]->octave == octave)
{
- return scherzo->notes_pressed[i];
+ return scherzo->notes_pressed.notes[i];
}
}
note = score_add_note (staff, pitch, octave, SCORE_DURATION_WHOLE);
- 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");
- exit (1);
- }
+ note_group_add_note (&scherzo->notes_pressed, note);
- scherzo->notes_pressed[scherzo->num_notes_pressed - 1] = note;
+ if (scherzo->pedal_pressed)
+ note_group_add_note (&scherzo->notes_pedaled, note);
scherzo_analyze_chord (scherzo);
return note;
}
-
static void
-scherzo_remove_note (scherzo_t *scherzo, score_pitch_t pitch, int octave)
+scherzo_release_note (scherzo_t *scherzo, score_pitch_t pitch, int octave)
{
score_note_t *note;
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--;
+ int found = 0;
+ int target_midi = _score_pitch_and_octave_to_midi (pitch, octave);
+ int note_midi;
+
+ for (i = scherzo->notes_pressed.num_notes - 1; i >=0; i--) {
+ note = scherzo->notes_pressed.notes[i];
+ note_midi = _score_pitch_and_octave_to_midi (note->pitch, note->octave);
+ if (note_midi == target_midi) {
+ found = 1;
+ if (! scherzo->pedal_pressed)
+ score_remove_note (note);
+ note_group_remove_note_at (&scherzo->notes_pressed, i);
}
}
+ if (found == 0) {
+ fprintf (stderr, "Internal error: Failed to find note to release.\n");
+ }
+
scherzo_analyze_chord (scherzo);
}
static score_note_t *
-scherzo_add_note_midi (scherzo_t *scherzo, unsigned char midi_note)
+scherzo_press_note_midi (scherzo_t *scherzo, unsigned char midi_note)
{
score_pitch_t pitch;
int octave;
_midi_to_score_pitch_and_octave (midi_note, &pitch, &octave);
- return scherzo_add_note (scherzo, pitch, octave);
+ return scherzo_press_note (scherzo, pitch, octave);
}
-
static void
-scherzo_remove_note_midi (scherzo_t *scherzo, unsigned char midi_note)
+scherzo_release_note_midi (scherzo_t *scherzo, unsigned char midi_note)
{
score_pitch_t pitch;
int octave;
_midi_to_score_pitch_and_octave (midi_note, &pitch, &octave);
- scherzo_remove_note (scherzo, pitch, octave);
+ scherzo_release_note (scherzo, pitch, octave);
+}
+
+static void
+scherzo_press_pedal (scherzo_t *scherzo)
+{
+ int i;
+
+ scherzo->pedal_pressed = 1;
+
+ /* Copy all pressed notes to pedaled notes */
+ for (i = 0; i < scherzo->notes_pressed.num_notes; i++)
+ note_group_add_note (&scherzo->notes_pedaled, scherzo->notes_pressed.notes[i]);
+}
+
+static void
+scherzo_release_pedal (scherzo_t *scherzo)
+{
+ score_note_t *note, *new_note;
+ int i;
+
+ /* Make new notes in score for all pressed notes. */
+ for (i = 0; i < scherzo->notes_pressed.num_notes; i++) {
+ note = scherzo->notes_pressed.notes[i];
+ new_note = score_add_note (note->staff, note->pitch, note->octave, note->duration);
+ scherzo->notes_pressed.notes[i] = new_note;
+ }
+
+ /* Then remove all previously pedaled notes from the score. */
+ for (i = scherzo->notes_pedaled.num_notes - 1; i >=0; i--) {
+ note = scherzo->notes_pedaled.notes[i];
+ score_remove_note (note);
+ note_group_remove_note_at (&scherzo->notes_pedaled, i);
+ }
+
+ scherzo->pedal_pressed = 0;
+
+ scherzo_analyze_chord (scherzo);
+
+ gtk_widget_queue_draw (scherzo->window);
}
void
switch (*s) {
case 'C':
- pitch = SCORE_PITCH_VALUE(C, NATURAL);
+ pitch = SCORE_PITCH_C;
break;
case 'D':
- pitch = SCORE_PITCH_VALUE(D, NATURAL);
+ pitch = SCORE_PITCH_D;
break;
case 'E':
- pitch = SCORE_PITCH_VALUE(E, NATURAL);
+ pitch = SCORE_PITCH_E;
break;
case 'F':
- pitch = SCORE_PITCH_VALUE(F, NATURAL);
+ pitch = SCORE_PITCH_F;
break;
case 'G':
- pitch = SCORE_PITCH_VALUE(G, NATURAL);
+ pitch = SCORE_PITCH_G;
break;
case 'A':
- pitch = SCORE_PITCH_VALUE(A, NATURAL);
+ pitch = SCORE_PITCH_A;
break;
case 'B':
- pitch = SCORE_PITCH_VALUE(B, NATURAL);
+ pitch = SCORE_PITCH_B;
break;
default:
fprintf (stderr, "Malformed pitch name: %s (expected 'A' - 'G')\n", s);
/* Incomplete event. Nothing to do. */
break;
case SND_SEQ_EVENT_NOTEON:
- note = scherzo_add_note_midi (scherzo, event.data.note.note);
+ note = scherzo_press_note_midi (scherzo, event.data.note.note);
_judge_note (scherzo, note);
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 and natural for computer keyboard keypresses. */
+ scherzo.keyboard_octave = 4;
+ scherzo.keyboard_accidental = SCORE_PITCH_ACCIDENTAL_NATURAL;
+
+ note_group_init (scherzo.ctx, &scherzo.notes_pressed);
+ note_group_init (scherzo.ctx, &scherzo.notes_pedaled);
+
+ scherzo.pedal_pressed = 0;
mnemon_init (&scherzo.mnemon);
/* XXX: Should create a default file if one cannot be loaded. */