Add save to mp3 + update supermariobros theme

1 files changed, 48 insertions, 28 deletions

diff --git a/src/supermariobros.audio.sql b/src/supermariobros.audio.sql
index b6ce0a7..8f592c1 100644
--- a/src/supermariobros.audio.sql
+++ b/src/supermariobros.audio.sql
@@ -1,33 +1,53 @@
 INSERT OR REPLACE INTO audio_tracks (id, sample_rate, format) VALUES ('supermariobros', 8000, 'u8') RETURNING id;
 
 WITH RECURSIVE
-  audio AS (SELECT *, 250 AS n, 100 AS total_tones, 160 AS gain FROM audio_tracks WHERE id = 'supermariobros'),
-  notes AS (SELECT 659.225 AS E5, 523.2511 AS C5, 783.9909 AS G5, 391.9954 AS G4),
-  tone(position) AS (SELECT 0 UNION ALL SELECT position + 1 FROM tone, audio WHERE position < total_tones * n),
-  _samples(value, position) AS (
-    SELECT
-      (CASE
-        WHEN position < 5*n THEN position * E5
-        WHEN position < 6*n THEN 0
-        WHEN position < 11*n THEN position * E5
-        WHEN position < 17*n THEN 0
-        WHEN position < 22*n THEN position * E5
-        WHEN position < 28*n THEN 0
-        WHEN position < (28+5)*n THEN position * C5
-        WHEN position < (28+6)*n THEN 0
-        WHEN position < (28+11)*n THEN position * E5
-        WHEN position < (28+17)*n THEN 0
-        WHEN position < (28+22)*n THEN position * G5
-        WHEN position < (28+39)*n THEN 0
-        WHEN position < (28+39+5)*n THEN position * G4
-        ELSE 0
-      END) AS value,
+  audio AS
+    (SELECT *, 250 AS n, 160 AS gain FROM audio_tracks WHERE id = 'supermariobros'),
+  notes AS (SELECT
+    440.0000 AS A4,
+    493.8833 AS B4,
+    466.1638 AS Bflat4,
+    391.9954 AS G4,
+    261.6256 AS C4,
+    329.6276 AS E4,
+    523.2511 AS C5,
+    783.9909 AS G5,
+    659.2250 AS E5),
+  melody(m_id, mduration, mnote) AS
+    (SELECT ROW_NUMBER() OVER () as m_id, * FROM (VALUES
+      (5,  (SELECT E5 FROM notes))    , (1,  0),
+      (5,  (SELECT E5 FROM notes))    , (6,  0),
+      (5,  (SELECT E5 FROM notes))    , (6,  0),
+      (5,  (SELECT C5 FROM notes))    , (1,  0),
+      (5,  (SELECT E5 FROM notes))    , (6,  0),
+      (5,  (SELECT G5 FROM notes))    , (17, 0),
+      (5,  (SELECT G4 FROM notes))    , (17, 0),
+      (5,  (SELECT C5 FROM notes))    , (12, 0),
+      (5,  (SELECT G4 FROM notes))    , (10, 0),
+      (5,  (SELECT E4 FROM notes))    , (8,  0),
+      (5,  (SELECT A4 FROM notes))    , (6,  0),
+      (5,  (SELECT B4 FROM notes))    , (5,  0),
+      (5,  (SELECT Bflat4 FROM notes)), (1,  0),
+      (5,  (SELECT A4 FROM notes))    , (12,  0),
+      -- (5,  (SELECT G4 FROM notes))    , (1,  0),
+      (1,  0))),
+  melody_with_offsets(mstart, mend, mnote) AS
+    (SELECT
+      SUM(mduration) OVER (ORDER BY m_id ROWS BETWEEN UNBOUNDED PRECEDING AND 1 PRECEDING) AS mstart,
+      SUM(mduration) OVER (ORDER BY m_id) AS mend,
+      mnote
+    FROM melody),
+  tone(position) AS (SELECT 0 UNION ALL SELECT position + 1 FROM tone, audio WHERE position < (SELECT SUM(mduration) FROM melody) * n),
+  _samples(value, position) AS
+    (SELECT
+      IFNULL(
+  			(SELECT mnote * position FROM melody_with_offsets
+          WHERE position BETWEEN IFNULL(mstart, 0) * n AND mend * n
+          LIMIT 1),
+      0) AS value,
       position
-    FROM tone, notes, audio
-  ),
-  samples(value, position) AS (
-    SELECT MOD(FLOOR(value * 2.0 / sample_rate), 2) * gain, position
-    FROM _samples, audio
-  )
--- SELECT value FROM samples ORDER BY position;
+    FROM tone, notes, audio),
+  samples(value, position) AS
+    (SELECT MOD(FLOOR(value * 2.0 / sample_rate), 2) * gain, position
+      FROM _samples, audio)
 INSERT INTO audio_track_samples (audio_track_id, value, position) SELECT 'supermariobros', value, position FROM samples ORDER BY position;