make mistakes

README.md

@@ -158,6 +158,17 @@ copyparty returns a truncated sha512sum of your PUT/POST as base64; you can gene
 * `Pillow` (requires py2.7 or py3.5+)
 
 
+## optional gpl stuff
+
+some bundled examples have copyleft dependencies:
+* [audio-bpm.py](./copyparty/mods/audio-bpm.py), enabled with `TODO`, detects the BPM of music using the BeatRoot Vamp Plugin; imports GPL2
+* [audio-key.py](./copyparty/mods/audio-key.py), enabled with `TODO`, detects the melodic key of music using the Mixxx fork of keyfinder; imports GPL3
+
+these are not loaded or evaluated by default and are bundled as "plugins" (term used very loosely)
+
+each can be executed (through subprocess, not importing) during the analysis phase of `-e2ts` if enabled through the options mentioned above, kinda sounds like "arm's length" not that i'm qualified to say
+
+
 # sfx
 
 currently there are two self-contained binaries:

copyparty/mods/audio-bpm.py

@@ -0,0 +1,61 @@
+#!/usr/bin/env python
+
+import os
+import sys
+import vamp
+import tempfile
+import numpy as np
+import subprocess as sp
+
+from copyparty.util import fsenc
+
+"""
+dep: vamp
+dep: beatroot-vamp
+dep: ffmpeg
+"""
+
+
+def det(tf):
+    # fmt: off
+    sp.check_call([
+        "ffmpeg",
+        "-nostdin",
+        "-hide_banner",
+        "-v", "fatal",
+        "-ss", "13",
+        "-y", "-i", fsenc(sys.argv[1]),
+        "-ac", "1",
+        "-ar", "22050",
+        "-t", "300",
+        "-f", "f32le",
+        tf
+    ])
+    # fmt: on
+
+    with open(tf, "rb") as f:
+        d = np.fromfile(f, dtype=np.float32)
+        c = vamp.collect(d, 22050, "beatroot-vamp:beatroot")
+        cl = c["list"]
+
+        # throws if detection failed:
+        bpm = float(cl[-1]["timestamp"] - cl[1]["timestamp"])
+        bpm = round(60 * ((len(cl) - 1) / bpm), 2)
+        print(f"{bpm:.2f}")
+
+
+def main():
+    with tempfile.NamedTemporaryFile(suffix=".pcm", delete=False) as f:
+        f.write(b"h")
+        tf = f.name
+
+    try:
+        det(tf)
+    except:
+        pass
+    finally:
+        os.unlink(tf)
+
+
+if __name__ == "__main__":
+    main()

copyparty/mods/audio-key.py

@@ -0,0 +1,18 @@
+#!/usr/bin/env python
+
+import sys
+import keyfinder
+
+"""
+dep: github/mixxxdj/libkeyfinder
+dep: pypi/keyfinder
+dep: ffmpeg
+
+note: cannot fsenc
+"""
+
+
+try:
+    print(keyfinder.key(sys.argv[1]).camelot())
+except:
+    pass

docs/music-analysis.sh

@@ -84,6 +84,7 @@ afun() { ffmpeg -hide_banner -v fatal -nostdin -ss $((dur/3)) -y -i /mnt/Users/e
 afun() { ffmpeg -hide_banner -v fatal -nostdin -ss $((dur/3)) -y -i /mnt/Users/ed/Music/"$fn" -ac 1 -ar 44100 /dev/shm/$core.wav || return 1; py="$(python3 -c 'from essentia.standard import *; a=MonoLoader(filename="/dev/shm/'$core'.wav")(); bpm,beats,confidence,_,intervals=RhythmExtractor2013(method="multifeature")(a); print("{:.2f}".format(bpm))')"; }; runfun
 
 
+
 ########################################################################
 ##
 ##  key detectyion
@@ -100,8 +101,18 @@ var m=''; for (var a=0; a<24; a++) m += 's/\\|(' + maps["traktor_sharps"][a].tri
 re='s/\|(B|B|B|6d)$/|1B/;s/\|(F#|F#|Gb|7d)$/|2B/;s/\|(C#|Db|Db|8d)$/|3B/;s/\|(G#|Ab|Ab|9d)$/|4B/;s/\|(D#|Eb|Eb|10d)$/|5B/;s/\|(A#|Bb|Bb|11d)$/|6B/;s/\|(F|F|F|12d)$/|7B/;s/\|(C|C|C|1d)$/|8B/;s/\|(G|G|G|2d)$/|9B/;s/\|(D|D|D|3d)$/|10B/;s/\|(A|A|A|4d)$/|11B/;s/\|(E|E|E|5d)$/|12B/;s/\|(G#m|Abm|Abm|6m)$/|1A/;s/\|(D#m|Ebm|Ebm|7m)$/|2A/;s/\|(A#m|Bbm|Bbm|8m)$/|3A/;s/\|(Fm|Fm|Fm|9m)$/|4A/;s/\|(Cm|Cm|Cm|10m)$/|5A/;s/\|(Gm|Gm|Gm|11m)$/|6A/;s/\|(Dm|Dm|Dm|12m)$/|7A/;s/\|(Am|Am|Am|1m)$/|8A/;s/\|(Em|Em|Em|2m)$/|9A/;s/\|(Bm|Bm|Bm|3m)$/|10A/;s/\|(F#m|F#m|Gbm|4m)$/|11A/;s/\|(C#m|Dbm|Dbm|5m)$/|12A/;'
 
 
+# runner/wrapper
+runfun() { cores=8; touch run; tbc() { bc | sed -r 's/(\.[0-9]{2}).*/\1/'; }; for ((core=0; core<$cores; core++)); do sqlite3 /mnt/Users/ed/Music/.hist/up2k.db 'select dur.w, dur.v, key.v from mt key join mt dur on key.w = dur.w where key.k = "key" and dur.k = ".dur" order by dur.w' | uniq -w16 | grep -vE '(Off-Key|None)$' | sed -r "s/ //g;$re" | uniq -w16 | while IFS=\| read w dur bpm; do sqlite3 /mnt/Users/ed/Music/.hist/up2k.db "select rd, fn from up where substr(w,1,16) = '$w'" | sed -r "s/^/$bpm /"; done| grep mir/cr | tr \| / | while read key fn; do [ -e run ] || break; n=$((n+1)); ncore=$((n%cores)); [ $ncore -eq $core ] || continue; t0=$(date +%s.%N); (afun || exit 1; t=$(date +%s.%N); td=$(echo "scale=3; $t - $t0" | tbc); [ "$key" = "$py" ] && c=2 || c=5; printf '%4s sec, %4s orig, \033[3%dm%4s py,\033[0m %s\n' $td "$key" $c "$py" "$fn") || break; done & done; time wait 2>/dev/null; }
+
+
 # ok: 26   1off: 10   2off: 1   fail: 3   #  15 sec, keyfinder
-cores=8; touch run; tbc() { bc | sed -r 's/(\.[0-9]{2}).*/\1/'; }; for ((core=0; core<$cores; core++)); do sqlite3 /mnt/Users/ed/Music/.hist/up2k.db 'select dur.w, dur.v, key.v from mt key join mt dur on key.w = dur.w where key.k = "key" and dur.k = ".dur" order by dur.w' | uniq -w16 | grep -vE '(Off-Key|None)$' | sed -r "s/ //g;$re" | uniq -w16 | while IFS=\| read w dur bpm; do sqlite3 /mnt/Users/ed/Music/.hist/up2k.db "select rd, fn from up where substr(w,1,16) = '$w'" | sed -r "s/^/$bpm /"; done| grep mir/cr | tr \| / | while read key fn; do [ -e run ] || break; n=$((n+1)); ncore=$((n%cores)); [ $ncore -eq $core ] || continue; ffmpeg -hide_banner -v fatal -nostdin -ss $((dur/3)) -y -i /mnt/Users/ed/Music/"$fn" -ac 1 -ar 44100 -t 60 /dev/shm/$core.wav || break; t0=$(date +%s.%N); py="$(python3 -c 'import sys; import keyfinder; print(keyfinder.key(sys.argv[1]).camelot())' "/dev/shm/$core.wav")"; t=$(date +%s.%N); td=$(echo "scale=3; $t - $t0" | tbc); [ "$key" = "$py" ] && c=2 || c=5; printf '%4s sec, %4s orig, \033[3%dm%4s py,\033[0m %s\n' $td "$key" $c "$py" "$fn"; done & done; time wait 2>/dev/null
+afun() { ffmpeg -hide_banner -v fatal -nostdin -ss $((dur/3)) -y -i /mnt/Users/ed/Music/"$fn" -ac 1 -ar 44100 -t 60 /dev/shm/$core.wav || break; py="$(python3 -c 'import sys; import keyfinder; print(keyfinder.key(sys.argv[1]).camelot())' "/dev/shm/$core.wav")"; }; runfun
+
+
+# https://github.com/MTG/essentia/raw/master/src/examples/tutorial/example_key_by_steps_streaming.py
+# https://essentia.upf.edu/reference/std_Key.html  # edma edmm braw bgate
+sed -ri 's/^(key = Key\().*/\1profileType="bgate")/' example_key_by_steps_streaming.py
+afun() { ffmpeg -hide_banner -v fatal -nostdin -ss $((dur/3)) -y -i /mnt/Users/ed/Music/"$fn" -ac 1 -ar 44100 -t 60 /dev/shm/$core.wav || break; py="$(python3 example_key_by_steps_streaming.py /dev/shm/$core.{wav,yml} 2>/dev/null | sed -r "s/ major//;s/ minor/m/;s/^/|/;$re;s/.//")"; }; runfun