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

rtdeep.py

@@ -0,0 +1,94 @@
+#!/usr/bin/env python3
+import subprocess, os, glob, sys, time, struct
+
+proc = None
+RPP = sys.argv[1] if len(sys.argv) > 1 else "/home/m/soothe-bt/render_long.rpp"
+START = len(sys.argv) > 2 and sys.argv[2] == "start"
+if START:
+    proc = subprocess.Popen(
+        ['reaper', '-nosplash', '-renderproject', RPP],
+        stdout=open('/tmp/rtfind.log', 'w'), stderr=subprocess.STDOUT)
+    print('reaper', proc.pid, flush=True)
+
+# The SpectralProcessor vtable slot containing ctor 0x180529610
+CTOR = 0x180529610
+# candidate vptrs: slots near it
+VCANDS = [0x1824abb80, 0x1824abb88, 0x1824abb90, 0x1824abb98, 0x1824abba0, 0x1824abba8, 0x1824abbb0]
+
+def all_mapped(pid):
+    out = []
+    maps = open(f'/proc/{pid}/maps').read()
+    for line in maps.splitlines():
+        p = line.split()
+        lo, hi = (int(x, 16) for x in p[0].split('-'))
+        if 'r' in p[1]:
+            out.append((lo, hi))
+    return out
+
+def scan(pid, vptr, tgt):
+    mem = os.open(f'/proc/{pid}/mem', os.O_RDONLY)
+    hits = []
+    for lo, hi in all_mapped(pid):
+        try:
+            d = os.pread(mem, hi - lo, lo)
+        except Exception:
+            continue
+        i = 0
+        while True:
+            i = d.find(tgt, i)
+            if i < 0:
+                break
+            hits.append(lo + i)
+            i += 1
+    os.close(mem)
+    return hits
+
+def filter_candidates(pid, hit_addrs):
+    # for each candidate object addr (addr = where vptr stored => object base), read fields
+    out = []
+    mem = os.open(f'/proc/{pid}/mem', os.O_RDONLY)
+    for a in hit_addrs:
+        try:
+            d = os.pread(mem, 0x600, a)
+        except Exception:
+            continue
+        f4 = struct.unpack('<%dI' % (len(d) // 4), d)
+        # look for N at +0x19c and oversample at +0x1ac
+        n = f4[0x19c // 4] if (0x19c // 4) < len(f4) else 0
+        u = f4[0x1ac // 4] if (0x1ac // 4) < len(f4) else 0
+        w = struct.unpack('<d', d[0x1a4:0x1a4 + 8])[0] if len(d) >= 0x1a4 + 8 else 0
+        ok = (n in (256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536) and
+              u in (2, 4, 8, 16))
+        if w != 0 and (n > 0 or ok):
+            out.append((a, n, u, w, ok))
+    os.close(mem)
+    return out
+
+hosts = {}
+t0 = time.time()
+seen = set()
+while time.time() - t0 < 90:
+    for p in glob.glob('/proc/[0-9]*'):
+        try:
+            pid = int(os.path.basename(p))
+            if pid in seen:
+                continue
+            maps = open(f'/proc/{pid}/maps').read()
+            if 'soothe2' not in maps or 'yabridge-host.exe' not in open(f'/proc/{pid}/cmdline', 'rb').read().decode('utf8', 'replace'):
+                continue
+        except Exception:
+            continue
+        seen.add(pid)
+        print('host', pid, flush=True)
+        # scan whole maps for each candidate vptr
+        for v in VCANDS:
+            h = scan(pid, v, struct.pack('<Q', v))
+            if h:
+                res = filter_candidates(pid, h)
+                print('   vptr', hex(v), 'hits', len(h), 'obj-cands', len(res), flush=True)
+                for r in res[:10]:
+                    print('      obj', hex(r[0]), 'N', r[1], 'ups', r[2], 'win', r[3], 'OK' if r[4] else '', flush=True)
+    time.sleep(0.4)
+if proc:
+    proc.kill()
+print('done', flush=True)