X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=scherzo.c;h=d6b3af55f8d56cf6dee4cc2fde49ae1c65fc4d59;hb=73ba6a9e9a9308747fd0fa301e1a349746eaf47c;hp=c285891f0a43d00167f4beb5d164189c227ccfa5;hpb=16d07286a5344861bd26ad97e97612d3806d1da7;p=scherzo diff --git a/scherzo.c b/scherzo.c index c285891..d6b3af5 100644 --- a/scherzo.c +++ b/scherzo.c @@ -24,6 +24,8 @@ #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 @@ -39,6 +41,14 @@ typedef struct challenge 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; @@ -48,16 +58,45 @@ typedef struct scherzo 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), @@ -92,7 +131,7 @@ on_expose_event_draw (GtkWidget *widget, 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); @@ -107,6 +146,14 @@ on_key_press_event (GtkWidget *widget, void *user_data) { scherzo_t *scherzo = user_data; + int octave; + score_pitch_name_t pitch_name; + 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: @@ -128,12 +175,192 @@ on_key_press_event (GtkWidget *widget, 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; + score_pitch_name_t pitch_name; + 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, @@ -182,61 +409,496 @@ _midi_to_score_pitch_and_octave (unsigned char midi_note, } } -static score_note_t * -scherzo_add_note_midi (scherzo_t *scherzo, unsigned char midi_note) -{ - score_staff_t *staff; - score_pitch_t pitch; - int octave; +/* Determine a chord name (if any) from the current notes pressed */ + +typedef struct analyzed_note { + /* Original note being analzyed. */ score_note_t *note; - staff = scherzo->challenge.staff; + /* Absolute pitch (expressed as midi number). */ + int midi_pitch; - _midi_to_score_pitch_and_octave (midi_note, &pitch, &octave); + /* Pitch relative to bass note. */ + int relative_pitch; +} analyzed_note_t; - note = score_staff_add_note (staff, pitch, octave, SCORE_DURATION_WHOLE); +static int +_compare_analyzed_note_by_midi_pitch (const void *va, const void *vb) +{ + const analyzed_note_t *a = va, *b = vb; - 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"); + 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; + + /* Number of half steps from root to specified degree within a + * diatonic scaled. */ + switch (degree->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; } - scherzo->notes_pressed[scherzo->num_notes_pressed - 1] = note; + return half_steps + degree->modification; +} - return note; +static int +_chord_signature_matches (analyzed_note_t *notes, + int num_notes, + modified_degree_t *degrees, + int num_degrees, + int *inversion_ret) +{ +#define MAX_DEGREES 4 + int relative_pitches[MAX_DEGREES]; + int inversion, max_inversions; + int i; + + assert (num_degrees <= MAX_DEGREES); + + if (num_notes != num_degrees) + return 0; + + max_inversions = num_degrees; + + /* We never spell simple intervals as inversions. */ + if (num_degrees == 2) + max_inversions = 1; + + for (inversion = 0; inversion < max_inversions; inversion++) { + 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]) + goto NEXT_INVERSION; + + *inversion_ret = inversion; + + return 1; + + NEXT_INVERSION: + ; + } + + return 0; } static void -scherzo_remove_note_midi (scherzo_t *scherzo, unsigned char midi_note) +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; + 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"} + }; + + struct { modified_degree_t degrees[3]; const char *name; } triads[] = { + { {{1, 0}, {3, 0}, {5, +1}}, "Augmented triad" }, + { {{1, 0}, {3, 0}, {5, 0}}, "Major triad" }, + { {{1, 0}, {3, -1}, {5, 0}}, "Minor triad" }, + { {{1, 0}, {3, -1}, {5, -1}}, "Diminished triad" } + }; + + struct { modified_degree_t degrees[4]; const char *name; } sevenths[] = { + { {{1, 0}, {3, 0}, {5, +1}, {7, 0}}, "Augmented/major 7" }, + { {{1, 0}, {3, 0}, {5, +1}, {7, -1}}, "Augmented 7" }, + { {{1, 0}, {3, 0}, {5, 0}, {7, 0}}, "Major 7" }, + { {{1, 0}, {3, 0}, {5, 0}, {7, -1}}, "Dominant 7" }, + { {{1, 0}, {3, -1}, {5, 0}, {7, 0}}, "Minor/major 7" }, + { {{1, 0}, {3, -1}, {5, 0}, {7, -1}}, "Minor 7" }, + { {{1, 0}, {3, -1}, {5, -1}, {7, 0}}, "Diminished/major 7" }, + { {{1, 0}, {3, -1}, {5, -1}, {7, -1}}, "Half-diminished 7" }, + { {{1, 0}, {3, -1}, {5, -1}, {7, -2}}, "Diminished 7" } + }; + + 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); + } + } + + 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)) + { + chord_name = octaves[i].name; + break; + } + } + break; + case 2: + for (i = 0; i < ARRAY_SIZE (intervals); i++) { + if (_chord_signature_matches (notes, num_notes, + intervals[i].degrees, 2, &inversion)) + { + chord_name = intervals[i].name; + break; + } + } + break; + case 3: + for (i = 0; i < ARRAY_SIZE (triads); i++) { + if (_chord_signature_matches (notes, num_notes, + triads[i].degrees, 3, &inversion)) + { + chord_name = triads[i].name; + break; + } + } + break; + case 4: + for (i = 0; i < ARRAY_SIZE(sevenths); i++) { + if (_chord_signature_matches (notes, num_notes, + sevenths[i].degrees, 4, &inversion)) + { + chord_name = sevenths[i].name; + break; + } + } + break; + } + + 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", + chord_name, inversion_str); + } else { + chord_name = talloc_strdup (local, 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_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]; + } + } - for (i = 0; i < scherzo->num_notes_pressed; i++) { - note = scherzo->notes_pressed[i]; + note = score_add_note (staff, pitch, octave, SCORE_DURATION_WHOLE); + + note_group_add_note (&scherzo->notes_pressed, note); + + if (scherzo->pedal_pressed) + note_group_add_note (&scherzo->notes_pedaled, note); + + scherzo_analyze_chord (scherzo); + + return note; +} + +static void +scherzo_release_note (scherzo_t *scherzo, score_pitch_t pitch, int octave) +{ + score_note_t *note; + int i; + int found = 0; + + 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_staff_remove_note (staff, 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 @@ -251,7 +913,7 @@ _select_challenge (scherzo_t *scherzo) char *s; if (challenge->note) { - score_staff_remove_note (challenge->staff, challenge->note); + score_remove_note (challenge->note); challenge->note = NULL; } @@ -279,25 +941,25 @@ _select_challenge (scherzo_t *scherzo) 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); @@ -312,8 +974,8 @@ _select_challenge (scherzo_t *scherzo) octave = *s - '0'; - challenge->note = score_staff_add_note (challenge->staff, pitch, octave, - SCORE_DURATION_WHOLE); + challenge->note = score_add_note (challenge->staff, pitch, octave, + SCORE_DURATION_WHOLE); challenge->satisfied = 0; challenge->mistaken = 0; } @@ -324,14 +986,21 @@ _judge_note (scherzo_t *scherzo, score_note_t *note) { 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 */ } } @@ -342,6 +1011,9 @@ _score_challenge (scherzo_t *scherzo) { challenge_t *challenge = &scherzo->challenge; + if (! challenge->note) + return; + if (! challenge->satisfied) return; @@ -361,6 +1033,7 @@ on_midi_input (unused (GIOChannel *channel), 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); @@ -372,20 +1045,21 @@ on_midi_input (unused (GIOChannel *channel), 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. */ @@ -393,13 +1067,29 @@ on_midi_input (unused (GIOChannel *channel), 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; } @@ -418,22 +1108,32 @@ main (int argc, char *argv[]) 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) { @@ -455,7 +1155,7 @@ main (int argc, char *argv[]) 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); @@ -468,9 +1168,13 @@ main (int argc, char *argv[]) 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);