#include "score.h"
#include "mnemon.h"
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))
+
#define unused(foo) foo __attribute__((unused))
#define MIDI_BUF_SIZE 4096
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;
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;
+ 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_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_release_pedal (scherzo_t *scherzo);
+
+static void
+_judge_note (scherzo_t *scherzo, score_note_t *note);
+
+static void
+_score_challenge (scherzo_t *scherzo);
+
static int
on_delete_event_quit (unused (GtkWidget *widget),
unused (GdkEvent *event),
cairo_paint (cr);
/* Add some padding on the sides and top */
- cairo_translate (cr, pad, 2 * scherzo->staff_height);
+ cairo_translate (cr, pad, scherzo->staff_height);
score_set_staff_height (score, scherzo->staff_height);
score_set_width (score, widget_width - 2 * pad);
void *user_data)
{
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 = scherzo->keyboard_octave;
switch (key->keyval) {
case GDK_KEY_plus:
case GDK_KEY_Escape:
gtk_main_quit ();
return FALSE;
+ case GDK_KEY_c:
+ case GDK_KEY_C:
+ pitch_name = SCORE_PITCH_NAME_C;
+ break;
+ case GDK_KEY_d:
+ case GDK_KEY_D:
+ pitch_name = SCORE_PITCH_NAME_D;
+ break;
+ case GDK_KEY_e:
+ case GDK_KEY_E:
+ pitch_name = SCORE_PITCH_NAME_E;
+ break;
+ case GDK_KEY_f:
+ case GDK_KEY_F:
+ pitch_name = SCORE_PITCH_NAME_F;
+ break;
+ case GDK_KEY_g:
+ case GDK_KEY_G:
+ pitch_name = SCORE_PITCH_NAME_G;
+ break;
+ case GDK_KEY_a:
+ case GDK_KEY_A:
+ pitch_name = SCORE_PITCH_NAME_A;
+ break;
+ case GDK_KEY_b:
+ case GDK_KEY_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;
}
- /* Allow the event to propagate to other handlers. */
+ 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_press_note (scherzo, pitch, octave);
+ _judge_note (scherzo, note);
+ gtk_widget_queue_draw (scherzo->window);
+
+ return TRUE;
+ }
+
+
+ /* Allow an unhandled event to propagate to other handlers. */
+ return FALSE;
+}
+
+static int
+on_key_release_event (unused (GtkWidget *widget),
+ GdkEventKey *key,
+ void *user_data)
+{
+ 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 = scherzo->keyboard_octave;
+
+ switch (key->keyval) {
+ case GDK_KEY_c:
+ case GDK_KEY_C:
+ pitch_name = SCORE_PITCH_NAME_C;
+ break;
+ case GDK_KEY_d:
+ case GDK_KEY_D:
+ pitch_name = SCORE_PITCH_NAME_D;
+ break;
+ case GDK_KEY_e:
+ case GDK_KEY_E:
+ pitch_name = SCORE_PITCH_NAME_E;
+ break;
+ case GDK_KEY_f:
+ case GDK_KEY_F:
+ pitch_name = SCORE_PITCH_NAME_F;
+ break;
+ case GDK_KEY_g:
+ case GDK_KEY_G:
+ pitch_name = SCORE_PITCH_NAME_G;
+ break;
+ case GDK_KEY_a:
+ case GDK_KEY_A:
+ pitch_name = SCORE_PITCH_NAME_A;
+ break;
+ case GDK_KEY_b:
+ case GDK_KEY_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_release_note (scherzo, pitch, octave);
+ _score_challenge (scherzo);
+ gtk_widget_queue_draw (scherzo->window);
+
+ return TRUE;
+ }
+
+
+ /* Allow an unhandled event to propagate to other handlers. */
return FALSE;
}
+static unsigned char
+_score_pitch_and_octave_to_midi (score_pitch_t pitch,
+ int octave)
+{
+ unsigned char midi_note = 12 * (octave + 1);
+
+ switch (SCORE_PITCH_NAME (pitch)) {
+ case SCORE_PITCH_NAME_C:
+ break;
+ case SCORE_PITCH_NAME_D:
+ midi_note += 2;
+ break;
+ case SCORE_PITCH_NAME_E:
+ midi_note += 4;
+ break;
+ case SCORE_PITCH_NAME_F:
+ midi_note += 5;
+ break;
+ case SCORE_PITCH_NAME_G:
+ midi_note += 7;
+ break;
+ case SCORE_PITCH_NAME_A:
+ midi_note += 9;
+ break;
+ case SCORE_PITCH_NAME_B:
+ midi_note += 11;
+ break;
+ }
+
+ switch (SCORE_PITCH_ACCIDENTAL (pitch)) {
+ case SCORE_PITCH_ACCIDENTAL_DOUBLE_FLAT:
+ midi_note -= 2;
+ break;
+ case SCORE_PITCH_ACCIDENTAL_FLAT:
+ midi_note -= 1;
+ break;
+ case SCORE_PITCH_ACCIDENTAL_NATURAL:
+ break;
+ case SCORE_PITCH_ACCIDENTAL_SHARP:
+ midi_note += 1;
+ break;
+ case SCORE_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,
}
}
+/* Determine a chord name (if any) from the current notes pressed */
+
+typedef struct analyzed_note {
+ /* Original note being analzyed. */
+ score_note_t *note;
+
+ /* Absolute pitch (expressed as midi number). */
+ int midi_pitch;
+
+ /* Pitch relative to bass note. */
+ int relative_pitch;
+} analyzed_note_t;
+
+static int
+_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 scaled. */
+ 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;
+}
+
+static int
+_chord_signature_matches (analyzed_note_t *notes,
+ int num_notes,
+ modified_degree_t *degrees,
+ int num_degrees,
+ int inversion,
+ score_pitch_t *root)
+{
+#define MAX_DEGREES 6
+ int relative_pitches[MAX_DEGREES];
+ int i, root_index;
+
+ 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;
+
+ 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);
+}
+
+static void
+scherzo_analyze_chord (scherzo_t *scherzo)
+{
+ void *local = talloc_new (NULL);
+ analyzed_note_t *notes;
+ note_group_t *note_group;
+ unsigned i, j, num_notes;
+ int bass_pitch, inversion;
+ score_pitch_t root;
+ const char *chord_name = NULL;
+
+ if (scherzo->pedal_pressed)
+ note_group = &scherzo->notes_pedaled;
+ else
+ note_group = &scherzo->notes_pressed;
+
+ num_notes = note_group->num_notes;
+
+ struct { modified_degree_t degrees[1]; const char *name; } octaves[] = {
+ { {{1, 0}}, " Octave"}
+ };
+
+ struct { modified_degree_t degrees[2]; const char *name; } intervals[] = {
+ { {{1, 0}, {2, -1}}, " Minor 2nd"},
+ { {{1, 0}, {2, 0}}, " Major 2nd"},
+ { {{1, 0}, {3, -1}}, " Minor 3rd"},
+ { {{1, 0}, {3, 0}}, " Major 3rd"},
+ { {{1, 0}, {4, 0}}, " Perfect 4th"},
+ { {{1, 0}, {5, -1}}, " Diminished 5th"},
+ { {{1, 0}, {5, 0}}, " Perfect 5th"},
+ { {{1, 0}, {6, -1}}, " Minor 6th"},
+ { {{1, 0}, {6, 0}}, " Major 6th"},
+ { {{1, 0}, {7, -1}}, " Minor 7th"},
+ { {{1, 0}, {7, 0}}, " Major 7th"}
+ };
+
+/* 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>"
+
+ struct { modified_degree_t degrees[3]; const char *name; } trichords[] = {
+ /* Triads */
+ { {{1, 0}, {3, +1}, {5, 0}}, "sus" },
+ { {{1, 0}, {3, 0}, {5, +1}}, SUP "+" PUS },
+ { {{1, 0}, {3, 0}, {5, 0}}, "" },
+ { {{1, 0}, {3, -1}, {5, 0}}, "m" },
+ { {{1, 0}, {3, -1}, {5, -1}}, "°" },
+ { {{1, 0}, {2, 0}, {5, 0}}, "msus2" },
+ /* Seventh chords with no 3rd */
+ { {{1, 0}, {5, +1}, {7, 0}}, SUP "+M7" PUS },
+ { {{1, 0}, {5, +1}, {7, -1}}, SUP "+7" PUS },
+ { {{1, 0}, {5, 0}, {7, 0}}, "M7" },
+ { {{1, 0}, {5, 0}, {7, -1}}, "7" },
+ { {{1, 0}, {5, -1}, {7, -1}}, "7♭5" },
+ /* Seventh chords with no 5th */
+ { {{1, 0}, {4, 0}, {7, 0}}, "M7sus" },
+ { {{1, 0}, {4, 0}, {7, -1}}, "7sus" },
+ { {{1, 0}, {3, 0}, {7, 0}}, "M7" },
+ { {{1, 0}, {3, 0}, {7, -1}}, "7" },
+ { {{1, 0}, {3, -1}, {7, 0}}, "m" SUP "M7" PUS },
+ { {{1, 0}, {3, -1}, {7, -1}}, "m7" },
+ { {{1, 0}, {2, 0}, {7, 0}}, "m" SUP "M7" PUS "sus2" },
+ { {{1, 0}, {2, 0}, {7, -1}}, "m7sus2" },
+ };
+
+ struct { modified_degree_t degrees[4]; const char *name; } tetrachords[] = {
+ /* Sixth chords */
+ { {{1, 0}, {4, 0}, {5, 0}, {6, 0}}, "6sus" },
+ { {{1, 0}, {3, 0}, {5, 0}, {6, 0}}, "6" }, /* Ambiguous with m7 */
+ { {{1, 0}, {3, -1}, {5, 0}, {6, 0}}, "m6" },
+ { {{1, 0}, {2, 0}, {5, 0}, {6, 0}}, "m6sus2" },
+ /* Seventh chords */
+ { {{1, 0}, {4, 0}, {5, +1}, {7, 0}}, SUP "+M7" PUS "sus" },
+ { {{1, 0}, {4, 0}, {5, +1}, {7, -1}}, SUP "+7" PUS "sus" },
+ { {{1, 0}, {4, 0}, {5, 0}, {7, 0}}, "M7sus" },
+ { {{1, 0}, {4, 0}, {5, 0}, {7, -1}}, "7sus" },
+ { {{1, 0}, {4, 0}, {5, -1}, {7, -1}}, "7♭5sus" },
+ { {{1, 0}, {3, 0}, {5, +1}, {7, 0}}, SUP "+M7" PUS },
+ { {{1, 0}, {3, 0}, {5, +1}, {7, -1}}, SUP "+7" PUS },
+ { {{1, 0}, {3, 0}, {5, 0}, {7, 0}}, "M7" },
+ { {{1, 0}, {3, 0}, {5, 0}, {7, -1}}, "7" },
+ { {{1, 0}, {3, 0}, {5, -1}, {7, -1}}, "7♭5" },
+ { {{1, 0}, {3, -1}, {5, 0}, {7, 0}}, "m" SUP "M7" PUS },
+ { {{1, 0}, {3, -1}, {5, 0}, {7, -1}}, "m7" },
+ { {{1, 0}, {3, -1}, {5, -1}, {7, 0}}, "°" SUP "M7" PUS },
+ { {{1, 0}, {3, -1}, {5, -1}, {7, -1}}, "𝆩" SUP "7" PUS },
+ { {{1, 0}, {3, -1}, {5, -1}, {7, -2}}, "°" SUP "7" PUS },
+ { {{1, 0}, {2, 0}, {5, 0}, {7, 0}}, "m" SUP "M7" PUS "sus2" },
+ { {{1, 0}, {2, 0}, {5, 0}, {7, -1}}, "m7sus2" },
+ { {{1, 0}, {2, 0}, {5, -1}, {7, 0}}, "°" SUP "M7" PUS "sus2" },
+ { {{1, 0}, {2, 0}, {5, -1}, {7, -1}}, "𝆩" SUP "7" PUS "sus2" },
+ { {{1, 0}, {2, 0}, {5, -1}, {7, -2}}, "°" SUP "7" PUS "sus2" }, /* Ambiguous with 7 */
+ /* Ninth chords voiced with no 5th */
+ { {{1, 0}, {9, 0}, {4, 0}, {7, 0}}, "M9sus" },
+ { {{1, 0}, {9, 0}, {4, 0}, {7, -1}}, "9sus" },
+ { {{1, 0}, {9, 0}, {3, 0}, {7, 0}}, "M9" },
+ { {{1, 0}, {9, 0}, {3, 0}, {7, -1}}, "9" },
+ { {{1, 0}, {9, 0}, {3, -1}, {7, 0}}, "m" SUP "M9" PUS },
+ { {{1, 0}, {9, 0}, {3, -1}, {7, -1}}, "m9" },
+ { {{1, 0}, {9, -1}, {3, -1}, {7, -1}}, "m♭9" },
+ };
+
+ /* The sorting here is funny to keep the array in degree order
+ * after reducing each degree to an actual scale degree, (9 -> 2,
+ * 11 -> 4, 13 -> 6) */
+ struct { modified_degree_t degrees[5]; const char *name; } pentachords[] = {
+ /* Sixth plus 9 */
+ { {{1, 0}, {9, 0}, {3, 0}, {5, 0}, {6, 0}}, "6/9" },
+ { {{1, 0}, {9, 0}, {3, -1}, {5, 0}, {6, 0}}, "m6/9" },
+ { {{1, 0}, {9, -1}, {3, -1}, {5, 0}, {6, 0}}, "m6/♭9" },
+ /* Seventh plus altered 9 */
+ { {{1, 0}, {9, +1}, {3, 0}, {5, 0}, {7, -1}}, "7♯9" },
+ { {{1, 0}, {9, -1}, {3, 0}, {5, 0}, {7, -1}}, "7♭9" },
+ { {{1, 0}, {9, +1}, {3, 0}, {5, -1}, {7, -1}}, "7♭5♯9" },
+ { {{1, 0}, {9, -1}, {3, 0}, {5, -1}, {7, -1}}, "7♭5♭9" },
+ /* Ninth chords */
+ { {{1, 0}, {9, 0}, {4, 0}, {5, +1}, {7, 0}}, SUP "+M9" PUS "sus" },
+ { {{1, 0}, {9, 0}, {4, 0}, {5, +1}, {7, -1}}, SUP "+9" PUS "sus" },
+ { {{1, 0}, {9, 0}, {4, 0}, {5, 0}, {7, 0}}, "M9sus" },
+ { {{1, 0}, {9, 0}, {4, 0}, {5, 0}, {7, -1}}, "9sus" },
+
+ { {{1, 0}, {9, 0}, {3, 0}, {5, +1}, {7, 0}}, SUP "+M9" PUS },
+ { {{1, 0}, {9, 0}, {3, 0}, {5, +1}, {7, -1}}, SUP "+9" PUS },
+
+ { {{1, 0}, {9, 0}, {3, 0}, {5, 0}, {7, 0}}, "M9" },
+ { {{1, 0}, {9, 0}, {3, 0}, {5, 0}, {7, -1}}, "9" },
+ { {{1, 0}, {9, 0}, {3, -1}, {5, 0}, {7, 0}}, "m" SUP "M9" PUS },
+ { {{1, 0}, {9, 0}, {3, -1}, {5, 0}, {7, -1}}, "m9" },
+ { {{1, 0}, {9, -1}, {3, -1}, {5, 0}, {7, -1}}, "m♭9" },
+ { {{1, 0}, {9, 0}, {3, 0}, {5, -1}, {7, 0}}, "M9" SUP "♭5" PUS },
+ { {{1, 0}, {9, 0}, {3, 0}, {5, -1}, {7, -1}}, "9" SUP "♭5" PUS },
+ { {{1, 0}, {9, 0}, {3, -1}, {5, -1}, {7, 0}}, "m" SUP "M9♭5" PUS },
+ { {{1, 0}, {9, 0}, {3, -1}, {5, -1}, {7, -1}}, "𝆩" SUP "9" PUS },
+
+ /* FIXME: I don't have names for these last three after
+ * dropping the 5th from the voicing. That suggests to me that
+ * I'm missing names for these with a perfect 5th in the list
+ * above. */
+ { {{1, 0}, {9, -1}, {3, -1}, {5, -1}, {7, -1}}, "𝆩" SUP "♭9" PUS },
+ { {{1, 0}, {9, 0}, {3, -1}, {5, -1}, {7, -2}}, "°" SUP "9" PUS },
+ { {{1, 0}, {9, -1}, {3, -1}, {5, -1}, {7, -2}}, "°" SUP "♭9" PUS },
+ };
+
+ struct { modified_degree_t degrees[6]; const char *name; } hexachords[] = {
+ { {{1, 0}, {9, 0}, {3, 0}, {11, 0}, {5, +1}, {7, 0}}, SUP "+M11" PUS },
+ { {{1, 0}, {9, 0}, {3, 0}, {11, 0}, {5, +1}, {7, -1}}, SUP "+11" PUS },
+ { {{1, 0}, {9, 0}, {3, 0}, {11, 0}, {5, 0}, {7, 0}}, "M11" },
+ { {{1, 0}, {9, 0}, {3, 0}, {11, 0}, {5, 0}, {7, -1}}, "11" },
+ { {{1, 0}, {9, 0}, {3, -1}, {11, 0}, {5, 0}, {7, 0}}, "m" SUP "M11" PUS },
+ { {{1, 0}, {9, 0}, {3, -1}, {11, 0}, {5, 0}, {7, -1}}, "m11" },
+ { {{1, 0}, {9, -1}, {3, -1}, {11, 0}, {5, -1}, {7, -1}}, "𝆩" SUP "11" PUS },
+ { {{1, 0}, {9, -1}, {3, -1}, {11, -1}, {5, -1}, {7, -2}}, "°" SUP "11" PUS }
+ };
+
+ if (scherzo->chord) {
+ score_remove_chord (scherzo->chord);
+ scherzo->chord = NULL;
+ }
+
+ if (num_notes <= 1)
+ goto DONE;
+
+ notes = talloc_array (local, analyzed_note_t, num_notes);
+ if (notes == NULL)
+ goto DONE;
+
+ for (i = 0; i < num_notes; 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);
+ /* Relative pitch will be filled in after sorting. */
+ notes[i].relative_pitch = 0;
+ }
+
+ /* 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;
+ }
+
+ /* 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 (inversion = 0; inversion < 4; inversion++) {
+ switch (num_notes) {
+ case 1:
+ for (i = 0; i < ARRAY_SIZE (octaves); i++) {
+ if (_chord_signature_matches (notes, num_notes,
+ octaves[i].degrees, 1,
+ inversion, &root))
+ {
+ chord_name = octaves[i].name;
+ goto CHORD_NAME_KNOWN;
+ }
+ }
+ break;
+ case 2:
+ for (i = 0; i < ARRAY_SIZE (intervals); i++) {
+ if (_chord_signature_matches (notes, num_notes,
+ intervals[i].degrees, 2,
+ inversion, &root))
+ {
+ chord_name = intervals[i].name;
+ goto CHORD_NAME_KNOWN;
+ }
+ }
+ break;
+ case 3:
+ for (i = 0; i < ARRAY_SIZE (trichords); i++) {
+ if (_chord_signature_matches (notes, num_notes,
+ trichords[i].degrees, 3,
+ inversion, &root))
+ {
+ chord_name = trichords[i].name;
+ goto CHORD_NAME_KNOWN;
+ }
+ }
+ break;
+ case 4:
+ for (i = 0; i < ARRAY_SIZE (tetrachords); i++) {
+ if (_chord_signature_matches (notes, num_notes,
+ tetrachords[i].degrees, 4,
+ inversion, &root))
+ {
+ chord_name = tetrachords[i].name;
+ goto CHORD_NAME_KNOWN;
+ }
+ }
+ break;
+ case 5:
+ for (i = 0; i < ARRAY_SIZE (pentachords); i++) {
+ if (_chord_signature_matches (notes, num_notes,
+ pentachords[i].degrees, 5,
+ inversion, &root))
+ {
+ chord_name = pentachords[i].name;
+ goto CHORD_NAME_KNOWN;
+ }
+ }
+ break;
+ case 6:
+ for (i = 0; i < ARRAY_SIZE (hexachords); i++) {
+ if (_chord_signature_matches (notes, num_notes,
+ hexachords[i].degrees, 6,
+ inversion, &root))
+ {
+ chord_name = hexachords[i].name;
+ goto CHORD_NAME_KNOWN;
+ }
+ }
+ break;
+ }
+ }
+ CHORD_NAME_KNOWN:
+
+ if (chord_name) {
+ if (inversion) {
+ const char *inversion_str;
+ switch (inversion) {
+ case 1:
+ inversion_str = "1st inversion";
+ break;
+ case 2:
+ inversion_str = "2nd inversion";
+ break;
+ case 3:
+ inversion_str = "3rd inversion";
+ break;
+ default:
+ fprintf (stderr, "Internal error: Unexpected inversion: %d\n",
+ inversion);
+ exit(1);
+ }
+ chord_name = talloc_asprintf (local, "%s%s %s",
+ _pitch_str (root),
+ chord_name, inversion_str);
+ } else {
+ chord_name = talloc_asprintf (local, "%s%s",
+ _pitch_str (root),
+ chord_name);
+ }
+ } 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_midi (scherzo_t *scherzo, unsigned char midi_note)
+scherzo_press_note (scherzo_t *scherzo, score_pitch_t pitch, int octave)
{
score_staff_t *staff;
- score_pitch_t pitch;
- int octave;
score_note_t *note;
+ int i;
- staff = scherzo->challenge.staff;
+ if (scherzo->challenge.note) {
+ staff = scherzo->challenge.staff;
+ } else if (octave >= 4) {
+ staff = scherzo->treble;
+ } else {
+ staff = scherzo->bass;
+ }
- _midi_to_score_pitch_and_octave (midi_note, &pitch, &octave);
+ /* Do nothing if this note is already pressed. */
+ 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.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);
+
+ if (scherzo->pedal_pressed)
+ note_group_add_note (&scherzo->notes_pedaled, note);
- scherzo->notes_pressed[scherzo->num_notes_pressed - 1] = note;
+ scherzo_analyze_chord (scherzo);
return note;
}
static void
-scherzo_remove_note_midi (scherzo_t *scherzo, unsigned char midi_note)
+scherzo_release_note (scherzo_t *scherzo, score_pitch_t pitch, int octave)
{
- score_pitch_t pitch;
- int octave;
score_note_t *note;
int i;
+ int found = 0;
- _midi_to_score_pitch_and_octave (midi_note, &pitch, &octave);
-
- for (i = 0; i < scherzo->num_notes_pressed; i++) {
- note = scherzo->notes_pressed[i];
+ for (i = scherzo->notes_pressed.num_notes - 1; i >=0; i--) {
+ note = scherzo->notes_pressed.notes[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--;
+ 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_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_press_note (scherzo, pitch, octave);
+}
+
+static void
+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_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);
{
challenge_t *challenge = &scherzo->challenge;
+ if (! scherzo->challenge.note) {
+ score_set_note_color_rgb (note, 0.0, 0.0, 0.0); /* black */
+ return;
+ }
+
if (note->pitch == challenge->note->pitch &&
note->octave == challenge->note->octave)
{
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 */
}
}
{
challenge_t *challenge = &scherzo->challenge;
+ if (! challenge->note)
+ return;
+
if (! challenge->satisfied)
return;
ssize_t remaining;
snd_seq_event_t event;
score_note_t *note;
+ int need_redraw = FALSE;
remaining = read (scherzo->midi_fd, buf, MIDI_BUF_SIZE);
next, remaining, &event);
remaining -= consumed;
+ next += consumed;
switch (event.type) {
case SND_SEQ_EVENT_NONE:
/* 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);
- gtk_widget_queue_draw (scherzo->window);
+ 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);
- gtk_widget_queue_draw (scherzo->window);
+ need_redraw = TRUE;
break;
case SND_SEQ_EVENT_CLOCK:
/* Ignore for now as my piano sends a constant stream of these. */
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);
break;
}
}
-
+
+ if (need_redraw)
+ gtk_widget_queue_draw (scherzo->window);
+
/* Return TRUE to continue to get called in the future. */
return TRUE;
}
scherzo.ctx = talloc_new (NULL);
scherzo.score = score_create (scherzo.ctx);
- scherzo.staff_height = 48;
+ scherzo.staff_height = 100;
score_set_staff_height (scherzo.score, scherzo.staff_height);
score_add_brace (scherzo.score, 2);
scherzo.treble = score_add_staff (scherzo.score, SCORE_CLEF_G);
scherzo.bass = score_add_staff (scherzo.score, SCORE_CLEF_F);
- scherzo.num_notes_pressed = 0;
- scherzo.notes_pressed = NULL;
+ scherzo.chord = 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. */
- mnemon_load_category (&scherzo.mnemon, "scherzo");
+ mnemon_load_category (&scherzo.mnemon, "scherzo-notes");
scherzo.challenge.note = NULL;
+/*
_select_challenge (&scherzo);
+*/
err = snd_midi_event_new (MIDI_BUF_SIZE, &scherzo.snd_midi_event);
if (err) {
scherzo.window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
- gtk_window_set_default_size (GTK_WINDOW (scherzo.window), 600, 400);
+ gtk_window_set_default_size (GTK_WINDOW (scherzo.window), 1000, 600);
g_signal_connect (scherzo.window, "delete-event",
G_CALLBACK (on_delete_event_quit), NULL);
G_CALLBACK (on_expose_event_draw),
&scherzo);
- g_signal_connect (scherzo.window, "key-press-event",
+ g_signal_connect (scherzo.window, "key-press-event",
G_CALLBACK (on_key_press_event),
&scherzo);
+
+ g_signal_connect (scherzo.window, "key-release-event",
+ G_CALLBACK (on_key_release_event),
+ &scherzo);
gtk_widget_show_all (scherzo.window);
projects / scherzo / blobdiff