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

2026-08-17 00:47:52 +03:00
parent abef5c6413
commit 230c6a63ad
9 changed files with 673 additions and 0 deletions
@@ -0,0 +1,88 @@
+#!/usr/bin/env python3
+import subprocess, os, glob, sys, time, struct
+
+RPP = "/home/m/soothe-bt/render_short.rpp"
+OUT = "/home/m/soothe-bt/out_rt.wav"
+CAND = [0x2370040, 0x1580040]
+proc = subprocess.Popen(['reaper', '-nosplash', '-renderproject', RPP],
+                        stdout=open('/tmp/rtver.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))
+            m = open(f'/proc/{pid}/maps').read()
+            c = open(f'/proc/{pid}/cmdline', 'rb').read().decode('utf8', 'replace')
+            if 'soothe2' in m and 'yabridge-host.exe' in c:
+                out.append(pid)
+        except Exception:
+            pass
+    return out
+
+def out_growth():
+    try:
+        return os.path.getsize(OUT)
+    except Exception:
+        return 0
+
+t0 = time.time()
+hosts = None
+base_sz = out_growth()
+while time.time() - t0 < 60:
+    hosts = find_hosts()
+    if hosts:
+        break
+    time.sleep(0.2)
+print('hosts:', hosts, flush=True)
+grew = 0
+while time.time() - t0 < 120:
+    s = out_growth()
+    if s > base_sz:
+        grew = s; break
+    if proc.poll() is not None:
+        print('reaper exited early', flush=True); break
+    time.sleep(0.3)
+print('out:', grew, flush=True)
+if not hosts or grew == 0:
+    proc.kill(); sys.exit('fail')
+time.sleep(0.5)
+
+for pid in hosts:
+    mem = os.open(f'/proc/{pid}/mem', os.O_RDONLY)
+    for a in CAND:
+        try:
+            d = os.pread(mem, 0x300, a)
+        except Exception as e:
+            print(pid, hex(a), 'err', e, flush=True); continue
+        # ?possibly the object base is NOT a; our signature matched offset at +0x19c.
+        # Re-scan around a for the exact int field to find true object base.
+        # fields: N at base+0x19c, N at +0x1a0, float win at +0x1a4, int ups at +0x1ac
+        # find qword-aligned true base by searching +0x1ac==4 in window
+        f4 = struct.unpack('<%dI' % (len(d) // 4), d)
+        bases = []
+        for o in range(0, len(f4) - (0x1ac // 4 + 1)):
+            if f4[o + 0x1ac // 4] == 4 and f4[o + 0x19c // 4] in (2048, 4096) \
+               and f4[o + 0x1a0 // 4] == f4[o + 0x19c // 4]:
+                bases.append(o * 4)
+        print(pid, hex(a), 'true-base candidates:', [hex(a + b) for b in bases[:6]], flush=True)
+        for b in bases[:1]:
+            o = b
+            vptr = struct.unpack_from('<Q', d, o)[0]
+            n = struct.unpack_from('<I', d, o + 0x19c)[0]
+            na = struct.unpack_from('<I', d, o + 0x1a0)[0]
+            win = struct.unpack_from('<f', d, o + 0x1a4)[0]
+            ups = struct.unpack_from('<I', d, o + 0x1ac)[0]
+            print('   base', hex(a + o), 'vptr', hex(vptr), 'N', n, 'N1', na,
+                  'win', win, 'ups', ups, flush=True)
+            # dump vtbl head
+            try:
+                vd = os.pread(mem, 0x80, vptr)
+                qs = struct.unpack('<10Q', vd)
+                print('   vtbl[0..9]:', ' '.join('%#x' % q for q in qs), flush=True)
+            except Exception as e:
+                print('   vtbl err', e, flush=True)
+    os.close(mem)
+proc.kill()
+print('done', flush=True)