re: LIVE N0@44100 = 2048, oversample 4 (two SP instances agree); angle-ramp+Cody-Waite twiddle path confirmed for main FFT; rtone/rtver scripts

rtscan.py

@@ -0,0 +1,74 @@
+#!/usr/bin/env python3
+import subprocess, os, glob, sys, time, struct
+
+RPP = sys.argv[1] if len(sys.argv) > 1 else "/home/m/soothe-bt/render_long.rpp"
+
+VCAND = list(range(0x1824abb60, 0x1824abc20, 8))  # wide vtable range
+CTOR = 0x180529610
+
+proc = subprocess.Popen(
+    ['reaper', '-nosplash', '-renderproject', RPP],
+    stdout=open('/tmp/rtov.log', 'w'), stderr=subprocess.STDOUT)
+print('reaper', proc.pid, flush=True)
+
+
+def find_hosts():
+    out = []
+    for p in glob.glob('/proc/[0-9]*'):
+        try:
+            pid = int(os.path.basename(p))
+            maps = open(f'/proc/{pid}/maps').read()
+            if 'soothe2' in maps and 'yabridge-host' in open(f'/proc/{pid}/cmdline','rb').read().decode('utf8','replace'):
+                out.append(pid)
+        except Exception:
+            pass
+    return out
+
+
+def scan(pid):
+    mem = os.open(f'/proc/{pid}/mem', os.O_RDONLY)
+    found = []
+    pats = {v: struct.pack('<Q', v) for v in VCAND}
+    ctor = struct.pack('<Q', CTOR)
+    maps = open(f'/proc/{pid}/maps').read()
+    for line in maps.splitlines():
+        parts = line.split()
+        lo, hi = (int(x, 16) for x in parts[0].split('-'))
+        if 'r' not in parts[1]:
+            continue
+        try:
+            d = os.pread(mem, hi - lo, lo)
+        except Exception:
+            continue
+        for v, p in pats.items():
+            i = 0
+            while True:
+                i = d.find(p, i)
+                if i < 0:
+                    break
+                found.append((v, lo + i))
+                i += 1
+    os.close(mem)
+    return found
+
+hosts = None
+found = []
+t0 = time.time()
+while time.time() - t0 < 60:
+    hosts = find_hosts()
+    if hosts:
+        for h in hosts:
+            f = scan(h)
+            if f:
+                found += [(h, a, b) for a, b in f]
+                if len(found) > 0:
+                    print('HITS', host if 'host' in dir() else h, len(found), flush=True)
+                    with open('/tmp/inst2.txt', 'w') as fo:
+                        for hh, va, a in found:
+                            fo.write(f'{hh} {va:#x} {a:#x}\n')
+                    if not hosts:
+                        proc.kill()
+                    sys.exit(0)
+    time.sleep(0.3)
+print('none', flush=True)
+proc.kill()