feat(audiod): DAC 实时监控 — 数字域电平表(100ms窗口整数RMS/peak,deci-dBFS)+1s监控日志(TF audio_monitor_<bootts>.log,流停即停)+CLI monitor 电平条;STATE 补 rms/peak/lvlseq 键(ABI兼容)。宿主47/47,qemu+真机0.7.91 tone验证(1kHz 0.3幅:rms=-13.9 peak=-10.8dBFS,hwrate~44.1k健康)。audiod ab193a2b meow_audio 891ab264

patch_v2/meow_audiod/meow_audio.c

@@ -7,6 +7,7 @@
  *   meow_audio tone [freq] [ms] [rate]   正弦测试音（默认 440Hz 500ms 44100；排查无声不须开 App）
  *   meow_audio route <0|2|3>             手动切路由（0=auto 2=3.5 3=4.4；调试/面板）
  *   meow_audio vol [0-100]               设置音量（无参=查询；v1 透传写 DAC numid=1/2 + settings.conf）
+ *   meow_audio monitor [秒]              终端实时电平表（rms/peak dBFS + 文本电平条，200ms 刷新）
  *
  * 传输：AF_UNIX SOCK_STREAM 到 audiod socket（env MEOW_AUDIO_SOCK / --sock 覆盖，宿主/qemu）。
  * 帧格式复用 meow_ipc.h 16B 头 + m_audio_* 负载。无 audiod → 连接失败/超时 → 打印友好错误并退出。
@@ -23,6 +24,7 @@
 #include <math.h>
 #include <time.h>
 #include <fcntl.h>
+#include <signal.h>
 #include <sys/time.h>
 #include <sys/socket.h>
 #include <sys/un.h>
@@ -163,6 +165,93 @@ static int cmd_status(void)
     return 0;
 }
 
+/* ---- monitor：终端实时电平表（200ms 刷新，文本电平条；数据源=MSG_AUDIO_STATE 的 rms/peak 键） ---- */
+static volatile sig_atomic_t g_mon_stop = 0;
+static void on_mon_sig(int sig) { (void)sig; g_mon_stop = 1; }
+
+/* 从 STATE 文本取整型字段（key 含 '='，如 "rms="；缺省 def） */
+static int txt_get_int(const char *t, const char *key, int def)
+{
+    const char *p = strstr(t, key);
+    return p ? atoi(p + strlen(key)) : def;
+}
+static void txt_get_str(const char *t, const char *key, char *out, size_t n)
+{
+    const char *p = strstr(t, key);
+    if (!p) { snprintf(out, n, "-"); return; }
+    p += strlen(key);
+    size_t k = 0;
+    while (p[k] && p[k] != ' ' && p[k] != '\n' && p[k] != '\t' && k < n - 1) { out[k] = p[k]; k++; }
+    out[k] = 0;
+}
+/* deci-dB → "-13.1"（地板显 "-inf"） */
+static void fmt_db10(char *out, size_t n, int v)
+{
+    if (v <= -990) { snprintf(out, n, "  -inf"); return; }
+    int neg = v < 0;
+    int a = neg ? -v : v;
+    snprintf(out, n, "%s%3d.%d", neg ? "-" : " ", a / 10, a % 10);
+}
+/* 文本电平条：-60..0 dBFS → 0..30 格 */
+static void print_bar(int db10)
+{
+    int cells = 0;
+    if (db10 > -600) cells = (db10 + 600) * 30 / 600;
+    if (cells > 30) cells = 30;
+    putchar('[');
+    for (int i = 0; i < 30; i++) putchar(i < cells ? '#' : '-');
+    putchar(']');
+}
+
+static int cmd_monitor(int secs)
+{
+    if (g_fd < 0) { fprintf(stderr, "meow_audio: no audiod (%s) — 音频服务不可用\n", g_sock); return 1; }
+    signal(SIGINT, on_mon_sig);
+    signal(SIGTERM, on_mon_sig);
+    printf("monitor: 5Hz 刷新，%s（Ctrl-C 退出）\n", secs > 0 ? "定时自动停" : "持续监视");
+    struct timespec ts;
+    clock_gettime(CLOCK_MONOTONIC, &ts);
+    uint64_t t0 = (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
+    uint8_t rbuf[MEOW_IPC_MAX];
+    uint16_t rt;
+    while (!g_mon_stop) {
+        int n = req_resp(MSG_AUDIO_QUERY, NULL, 0, &rt, rbuf, sizeof rbuf);
+        if (n < 0 || rt != MSG_AUDIO_STATE) {
+            fprintf(stderr, "\nmeow_audio: query failed (audiod died?)\n");
+            return 1;
+        }
+        rbuf[n < (int)sizeof rbuf - 1 ? n : (int)sizeof rbuf - 1] = 0;
+        const char *txt = (const char *)rbuf;
+        int active = txt_get_int(txt, "active=", 0);
+        int rms = txt_get_int(txt, "rms=", -990);
+        int pk  = txt_get_int(txt, "peak=", -990);
+        int vol = txt_get_int(txt, "vol=", -1);
+        int port = txt_get_int(txt, "port=", -1);
+        int rate = txt_get_int(txt, "rate=", 0);
+        char app[40];
+        txt_get_str(txt, "app=", app, sizeof app);
+        char rmsb[16], pkb[16];
+        fmt_db10(rmsb, sizeof rmsb, rms);
+        fmt_db10(pkb, sizeof pkb, pk);
+        if (active) {
+            printf("\rLIVE rms=%sdBFS peak=%sdBFS ", rmsb, pkb);
+            print_bar(pk);
+            printf(" %s %dHz port=%d vol=%d%%   ", app, rate, port, vol);
+        } else {
+            printf("\rIDLE 无活跃流（等待播放…）                                     ");
+        }
+        fflush(stdout);
+        if (secs > 0) {
+            clock_gettime(CLOCK_MONOTONIC, &ts);
+            uint64_t now = (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
+            if (now - t0 >= (uint64_t)secs * 1000) break;
+        }
+        usleep(200000);     /* 200ms 刷新 */
+    }
+    putchar('\n');
+    return 0;
+}
+
 static int cmd_route(int port)
 {
     m_audio_route_t r; r.port = (uint32_t)port;
@@ -284,7 +373,8 @@ static int cmd_tone(int freq, int ms, int rate)
 
 static void usage(const char *argv0)
 {
-    fprintf(stderr, "usage: %s status | tone [freq] [ms] [rate] | route <0|2|3> | vol [0-100]\n"
+    fprintf(stderr, "usage: %s status | tone [freq] [ms] [rate] | route <0|2|3> | vol [0-100] | monitor [秒]\n"
+            "  monitor: 终端实时电平表（200ms 刷新+文本电平条；缺省 10s，0=持续到 Ctrl-C）\n"
             "  env: MEOW_AUDIO_SOCK (socket 缺省 %s)\n", argv0, AUD_SOCK_DEFAULT);
 }
 
@@ -325,6 +415,10 @@ int main(int argc, char **argv)
         if (freq <= 0 || ms <= 0 || rate <= 0) { fprintf(stderr, "tone: bad params\n"); return 2; }
         if (g_fd < 0) { fprintf(stderr, "meow_audio: no audiod (%s) — 音频服务不可用\n", g_sock); return 1; }
         return cmd_tone(freq, ms, rate);
+    } else if (!strcmp(cmd, "monitor")) {
+        int secs = (argc >= 3) ? atoi(argv[2]) : 10;
+        if (secs < 0) secs = 10;
+        return cmd_monitor(secs);
     }
     usage(argv[0]);
     return 2;

patch_v2/meow_audiod/meow_audiod.c

@@ -171,6 +171,25 @@ static int     g_dev_open = 0;
 static uint32_t g_dev_rate = 0, g_dev_ch = 0, g_dev_fmt = 0;
 static int     g_reconfig_pending = 0;
 
+/* ---- 数字域电平表（DAC 实时监控；CS43198 无模拟电平回读，播放线程看 PCM 样本） ----
+ * 播放线程对从 ring 取出的每块 PCM 做纯整数累加（归一到 16bit 域：S24/S32 >>16），
+ * ~100ms 窗口（rate/10 帧）到点才结算一次 RMS/peak 并发布快照——每帧仅几次整数加乘，
+ * 不拖慢播放线程；无流时无数据读出即零开销。不用浮点（MIPS 软浮点昂贵）。 */
+#define METER_FLOOR_DB10   (-990)    /* 静音地板 -99.0 dBFS */
+static uint64_t g_m_sumsq  = 0;      /* 窗口内样本平方和（16bit 域） */
+static uint32_t g_m_peak   = 0;      /* 窗口峰值（0..32768） */
+static uint32_t g_m_frames = 0;      /* 窗口已计帧 */
+static uint32_t g_m_win    = 0;      /* 窗口目标帧数（rate/10；0=未配置/无流） */
+/* 发布快照（g_mu 保护；deci-dB，METER_FLOOR_DB10=静音） */
+static int      g_lvl_rms_db10  = METER_FLOOR_DB10;
+static int      g_lvl_peak_db10 = METER_FLOOR_DB10;
+static uint32_t g_lvl_seq = 0;       /* 快照代际（每次结算/开流复位递增） */
+
+/* ---- 全面监控日志（主线程 1s 节拍写；流活跃才写，流停止即停写，无流零开销） ---- */
+static int      g_monfd = -1;
+static uint64_t g_mon_prev_played = 0;
+static int64_t  g_mon_prev_ms = 0;
+
 /* ---- 日志 ---- */
 static void logmsg(const char *fmt, ...)
 {
@@ -299,6 +318,73 @@ static const char *fmt_name(int fmt)
 }
 static int frame_size(void) { return g_st.ch * fmt_bps(g_st.fmt); }
 
+/* 整数开平方（uint64→uint32，逐位法；替代软浮点 sqrt） */
+static uint32_t isqrt64(uint64_t x)
+{
+    uint64_t r = 0, bit = 1ULL << 62;
+    while (bit > x) bit >>= 2;
+    while (bit) {
+        if (x >= r + bit) { x -= r + bit; r = (r >> 1) + bit; }
+        else r >>= 1;
+        bit >>= 2;
+    }
+    return (uint32_t)r;
+}
+
+/* 线性幅度（16bit 域 0..32768）→ deci-dBFS（×10 整数，相对满幅 32768）。
+ * log2 = 整数位 +  octave 内线性插值；最大误差 ~0.5dB，电平表/日志足够。 */
+static int db10_of_lin(uint32_t v)
+{
+    if (v == 0) return METER_FLOOR_DB10;
+    if (v > 32768) v = 32768;
+    int b = 0;
+    uint32_t t = v;
+    while (t >>= 1) b++;                 /* b = floor(log2(v)) ∈ 0..15 */
+    uint32_t frac = v - (1u << b);
+    /* 20*log10(2)*10 = 60.206 */
+    int64_t db10 = (int64_t)60206 * (b - 15) / 1000;
+    db10 += (int64_t)60206 * (int64_t)frac / ((int64_t)1000 << b);
+    if (db10 < METER_FLOOR_DB10) db10 = METER_FLOOR_DB10;
+    return (int)db10;
+}
+
+/* 窗口结算 + 发布快照（调用方已持 g_mu） */
+static void meter_window_end(void)
+{
+    uint64_t samples = (uint64_t)g_m_frames * (g_st.ch ? g_st.ch : 2);
+    uint32_t rms = samples ? isqrt64(g_m_sumsq / samples) : 0;
+    g_lvl_rms_db10  = db10_of_lin(rms);
+    g_lvl_peak_db10 = db10_of_lin(g_m_peak);
+    g_lvl_seq++;
+    g_m_sumsq = 0; g_m_peak = 0; g_m_frames = 0;
+}
+
+/* 喂一块 PCM 进电平表（调用方已持 g_mu，播放线程 ring_read 后紧跟调用）。
+ * 逐样本整数累加；**逐帧判窗口边界**（帧循环里一次加+比较，开销可忽略）——
+ * 若按块末尾才结算，块越过窗口边界的部分会混进旧窗口（宿主流失真正弦+静音
+ * 混合窗口实测 rms 偏差 7dB+）。fmt 为 grant 格式；S24/S32 归一 >>16。 */
+static void meter_feed(const uint8_t *buf, size_t n)
+{
+    if (!g_m_win) return;
+    int bps = fmt_bps(g_st.fmt);
+    int ch = g_st.ch ? (int)g_st.ch : 2;
+    size_t fs = (size_t)ch * (size_t)bps;
+    if (fs == 0) return;
+    size_t frames = n / fs;
+    for (size_t i = 0; i < frames; i++) {
+        const uint8_t *p = buf + i * fs;
+        for (int c = 0; c < ch; c++, p += bps) {
+            int32_t v;
+            if (bps == 2) { int16_t s; memcpy(&s, p, 2); v = s; }
+            else          { int32_t s; memcpy(&s, p, 4); v = s >> 16; }
+            uint32_t a = (v < 0) ? (uint32_t)(-(int64_t)v) : (uint32_t)v;
+            g_m_sumsq += (uint64_t)a * a;
+            if (a > g_m_peak) g_m_peak = a;
+        }
+        if (++g_m_frames >= g_m_win) meter_window_end();
+    }
+}
+
 static size_t ring_bytes(void)          /* 已缓冲字节 */
 {
     return (g_wpos >= g_rpos) ? (g_wpos - g_rpos) : (g_ring_cap - g_rpos + g_wpos);
@@ -936,6 +1022,7 @@ static void *playback_thread(void *arg)
         size_t fs = (size_t)frame_size();
         if (fs > 0) want = (want / fs) * fs;
         size_t n = ring_read_locked(buf, want);
+        if (n) meter_feed(buf, n);      /* 电平表：整数累加，窗口到点才结算 */
         pthread_mutex_unlock(&g_mu);
         if (n == 0) continue;
         dev_write(buf, n);
@@ -1044,6 +1131,12 @@ static void dispatch(struct client *c, uint16_t type, uint32_t req_id, const uin
         g_drop_frames = 0;              /* 每流计数（txdrop 为全局客户端级，不随流清） */
         g_stall = 0;
         g_dev_bytes = 0;                /* 测试钩子计数随新流归零 */
+        /* 电平表复位 + 窗口目标（~100ms） */
+        g_m_win = g_st.rate / 10;
+        if (!g_m_win) g_m_win = 1;
+        g_m_sumsq = 0; g_m_peak = 0; g_m_frames = 0;
+        g_lvl_rms_db10 = g_lvl_peak_db10 = METER_FLOOR_DB10;
+        g_lvl_seq++;
         /* 重建 ring + 标记重配 */
         ring_rebuild();
         _audio_mark_reconfig_needed();
@@ -1105,7 +1198,7 @@ static void dispatch(struct client *c, uint16_t type, uint32_t req_id, const uin
         snprintf(txt, sizeof txt,
                  "active=%d app=%s sid=%u rate=%u ch=%u fmt=%s "
                  "written=%llu played=%llu underrun=%u dropped=%llu stall=%u txdrop=%u paused=%d "
-                 "route_mode=%s port=%d vol=%d\n",
+                 "route_mode=%s port=%d vol=%d rms=%d peak=%d lvlseq=%u\n",
                  g_st.active ? 1 : 0,
                  g_st.active ? g_st.app_id : "-",
                  (unsigned)g_st.sid, (unsigned)g_st.rate, (unsigned)g_st.ch,
@@ -1117,7 +1210,8 @@ static void dispatch(struct client *c, uint16_t type, uint32_t req_id, const uin
                  (unsigned)g_stall, (unsigned)g_txdrop, g_paused,
                  g_route_manual == -1 ? "auto" : "manual",
                  (g_route_manual != -1 ? g_route_manual : rb),
-                 vol);
+                 vol,
+                 g_lvl_rms_db10, g_lvl_peak_db10, (unsigned)g_lvl_seq);
         send_frame(c->fd, MSG_AUDIO_STATE, req_id, txt, (uint32_t)strlen(txt) + 1);
         break;
     }
@@ -1310,6 +1404,95 @@ static void *route_thread(void *arg)
     return NULL;
 }
 
+/* ---- 全面监控日志（§8 扩展：流活跃时每 1s 一行；主线程节拍驱动，不碰播放线程） ---- */
+/* deci-dB → "-13.1" 文本（静音地板显 "-inf"） */
+static void fmt_db10(char *out, size_t n, int v)
+{
+    if (v <= METER_FLOOR_DB10) { snprintf(out, n, "-inf"); return; }
+    int neg = v < 0;
+    int a = neg ? -v : v;
+    snprintf(out, n, "%s%d.%d", neg ? "-" : "", a / 10, a % 10);
+}
+
+static void mon_close(void)
+{
+    if (g_monfd >= 0) { close(g_monfd); g_monfd = -1; }
+}
+
+/* 主线程 1s 节拍调用。流活跃 → 懒打开 TF 卡 MeowOS/logs/audio_monitor_<bootts>.log
+ * （无卡降级 /tmp）并写一行（时间戳+app+参数+rms/peak dBFS+帧计数+underrun/stall/
+ * dropped/txdrop+路由口+FPGA 状态+音量%+hw 消费速率帧/s）；流停止即停写关文件。
+ * 快照先取后写：文件 IO 不持 g_mu。 */
+static void mon_tick(void)
+{
+    pthread_mutex_lock(&g_mu);
+    int active = g_st.active;
+    char app[MEOW_APP_ID_MAX]; snprintf(app, sizeof app, "%s", g_st.app_id);
+    uint32_t sid = g_st.sid, rate = g_st.rate;
+    unsigned ch = g_st.ch, fmt = g_st.fmt;
+    uint64_t wr = g_written_frames, pl = g_played_frames, dr = g_drop_frames;
+    unsigned ur = g_underrun, st = g_stall, tx = g_txdrop;
+    int paused = g_paused, vol = g_vol_pct, rmanual = g_route_manual, rcur = g_route_cur;
+    int rms = g_lvl_rms_db10, pk = g_lvl_peak_db10;
+    pthread_mutex_unlock(&g_mu);
+
+    if (!active) {                          /* 流停止即停写 */
+        if (g_monfd >= 0) {
+            mon_close();
+            logmsg("monitor log closed (stream ended)");
+        }
+        g_mon_prev_ms = 0;
+        return;
+    }
+    struct timespec tp;
+    clock_gettime(CLOCK_MONOTONIC, &tp);
+    int64_t now_ms = (int64_t)tp.tv_sec * 1000 + tp.tv_nsec / 1000000;
+    if (g_monfd < 0) {                      /* 懒打开（流开始才建文件） */
+        char ts[64];
+        get_bootts(ts, sizeof ts);
+        char path[368];
+        if (access(LOG_DIR_CARD, W_OK) == 0)
+            snprintf(path, sizeof path, "%s/audio_monitor_%s.log", LOG_DIR_CARD, ts);
+        else
+            snprintf(path, sizeof path, "/tmp/audio_monitor_%s.log", ts);
+        g_monfd = open(path, O_WRONLY | O_CREAT | O_APPEND, 0644);
+        if (g_monfd < 0) return;            /* 打不开就静默降级（下拍再试） */
+        logmsg("monitor log -> %s", path);
+        const char *hdr = "# meow_audiod monitor: time | app sid rate/ch/fmt | rms/peak dBFS | written played underrun stall dropped txdrop | route fpga vol hwrate\n";
+        if (write(g_monfd, hdr, strlen(hdr)) < 0) { }
+        g_mon_prev_played = pl;
+        g_mon_prev_ms = now_ms;
+    }
+    int64_t dt = now_ms - g_mon_prev_ms;
+    uint64_t hwrate = (dt > 0 && pl >= g_mon_prev_played)
+                      ? (pl - g_mon_prev_played) * 1000 / (uint64_t)dt : 0;
+    g_mon_prev_played = pl;
+    g_mon_prev_ms = now_ms;
+    struct tm tm;
+    time_t now = time(NULL);
+    localtime_r(&now, &tm);
+    char tbuf[32];
+    strftime(tbuf, sizeof tbuf, "%Y-%m-%d %H:%M:%S", &tm);
+    char rmsb[16], pkb[16];
+    fmt_db10(rmsb, sizeof rmsb, rms);
+    fmt_db10(pkb, sizeof pkb, pk);
+    int port = (rmanual != -1) ? rmanual : rcur;
+    char line[512];
+    int n = snprintf(line, sizeof line,
+                     "%s app=%s sid=%u %uHz/%uch/%s rms=%sdBFS peak=%sdBFS "
+                     "written=%llu played=%llu underrun=%u stall=%u dropped=%llu txdrop=%u "
+                     "route=%d(%s) fpga=%s vol=%d%% hwrate=%lluf/s%s\n",
+                     tbuf, app, (unsigned)sid, (unsigned)rate, ch, fmt_name((int)fmt),
+                     rmsb, pkb,
+                     (unsigned long long)wr, (unsigned long long)pl,
+                     ur, st, (unsigned long long)dr, tx,
+                     port, port_name(port),
+                     rcur >= 0 ? "armed" : "unknown",
+                     vol, (unsigned long long)hwrate,
+                     paused ? " paused" : "");
+    if (n > 0 && write(g_monfd, line, (size_t)n) < 0) { }
+}
+
 static void on_sig(int sig)
 {
     (void)sig;
@@ -1406,8 +1589,10 @@ int main(int argc, char **argv)
             logmsg("WATCHDOG: playback thread silent %ds (active=%d written=%llu played=%llu, device wedged?)",
                    play_silent, act, (unsigned long long)wr, (unsigned long long)plf);
         }
+        mon_tick();                         /* 流活跃才写监控日志（无流零开销） */
     }
     logmsg("meow_audiod shutdown");
+    mon_close();
     pthread_join(ti, NULL);
     pthread_join(tp, NULL);
     pthread_join(tr, NULL);

patch_v2/meow_audiod/test_audiod_host.c

@@ -479,6 +479,99 @@ int main(void)
     close(z7.fd);
     stop_audiod();
 
+    /* ---- T8：数字域电平表 + 全面监控日志（M2.97 DAC 实时监控）。
+     * 已知幅度正弦（amp=0.3, 440Hz）：理论 RMS=0.3/√2 → -13.5dBFS，peak=0.3 → -10.5dBFS。
+     * audiod 电平表为整数近似（octave 线性插值，误差 ~0.5dB）→ 容差 ±2.5dB。
+     * 监控日志：流活跃期主线程 1s 节拍写 /tmp/audio_monitor_<bootts>.log（宿主无卡降级）。 ---- */
+    printf("[T8 level meter + monitor log]\n");
+    unlink(TSOCK); unlink(TWAV);
+    g_audiod_pid = start_audiod();           /* file sink */
+    usleep(400000);
+    struct cli m8;
+    check(cli_connect(&m8) == 0, "connect M8");
+    m_audio_open_ack_t ackM8;
+    check(do_open(&m8, 44100, 2, AUDIO_FMT_S16, &ackM8) == 0 && ackM8.err == MEOW_OK, "open M8");
+    /* 喂 ~270ms 的 440Hz/0.3 幅度正弦（>2 个 100ms 窗口） */
+    for (int i = 0; i < 12; i++)
+        do_write(&m8, pcm, (uint32_t)gen_sine(pcm, sizeof pcm, AUDIO_FMT_S16, 1000, 440, 44100));
+    char q8[1024];
+    check(do_query(&m8, q8, sizeof q8) == 0 && strstr(q8, "rms=") && strstr(q8, "peak="),
+          "query exposes rms/peak keys");
+    int rms8 = -990, pk8 = -990;
+    for (int i = 0; i < 20; i++) {              /* 最多 2s 等首个窗口结算（播放排空竞态护栏） */
+        do_query(&m8, q8, sizeof q8);
+        rms8 = atoi(strstr(q8, "rms=") + 4);
+        pk8  = atoi(strstr(q8, "peak=") + 5);
+        if (rms8 > -990) break;
+        usleep(100000);
+    }
+    printf("  sine 0.3: rms=%d peak=%d (expect rms≈-135 peak≈-105 deci-dB)\n", rms8, pk8);
+    check(rms8 >= -160 && rms8 <= -110, "sine RMS ≈ -13.5dBFS (±2.5dB)");
+    check(pk8 >= -130 && pk8 <= -80, "sine peak ≈ -10.5dBFS (±2.5dB)");
+    /* 静音 → 地板（轮询等窗口结算：窗口按块粒度对齐，消除播放排空时序竞态） */
+    {
+        uint8_t zeros[4096];
+        memset(zeros, 0, sizeof zeros);
+        for (int i = 0; i < 8; i++) do_write(&m8, zeros, sizeof zeros);   /* ~186ms */
+        int floor_ok = 0;
+        for (int i = 0; i < 20; i++) {              /* 最多 2s 等纯零窗口结算 */
+            usleep(100000);
+            do_query(&m8, q8, sizeof q8);
+            rms8 = atoi(strstr(q8, "rms=") + 4);
+            pk8 = atoi(strstr(q8, "peak=") + 5);
+            if (rms8 <= -990 && pk8 <= -990) { floor_ok = 1; break; }
+        }
+        printf("  silence: rms=%d peak=%d\n", rms8, pk8);
+        check(floor_ok, "silence -> -inf floor");
+    }
+    /* monitor CLI 冒烟（流仍活跃：输出含电平字段+电平条） */
+    {
+        unlink("/tmp/meow_mon_cli.out");
+        pid_t mp = fork();
+        if (mp == 0) {
+            setenv("MEOW_AUDIO_SOCK", TSOCK, 1);
+            int fd = open("/tmp/meow_mon_cli.out", O_WRONLY | O_CREAT | O_TRUNC, 0644);
+            if (fd >= 0) { dup2(fd, 1); close(fd); }
+            execl("./meow_audio_host", "meow_audio_host", "monitor", "2", (char *)0);
+            _exit(127);
+        }
+        int mst = 0;
+        waitpid(mp, &mst, 0);
+        char mb[4096];
+        int ml = 0;
+        int fd = open("/tmp/meow_mon_cli.out", O_RDONLY);
+        if (fd >= 0) { ml = (int)read(fd, mb, sizeof mb - 1); close(fd); if (ml > 0) mb[ml] = 0; }
+        check(ml > 0 && strstr(mb, "rms=") && strstr(mb, "LIVE") && strchr(mb, '['),
+              "monitor CLI prints live level bar");
+    }
+    /* 监控日志文件：活跃期应已写入（前面耗时已超 2 个 1s 节拍） */
+    char bootts[64] = "";
+    {
+        int fd = open("/tmp/meow_bootts", O_RDONLY);
+        if (fd >= 0) { ssize_t r = read(fd, bootts, 63); close(fd); if (r > 0) bootts[r] = 0; }
+    }
+    char monpath[160];
+    snprintf(monpath, sizeof monpath, "/tmp/audio_monitor_%s.log", bootts);
+    char monbuf[4096];
+    int monlen = 0;
+    {
+        int fd = open(monpath, O_RDONLY);
+        if (fd >= 0) { monlen = (int)read(fd, monbuf, sizeof monbuf - 1); close(fd); if (monlen > 0) monbuf[monlen] = 0; }
+    }
+    check(monlen > 0 && strstr(monbuf, "app=test") && strstr(monbuf, "rms=") &&
+          strstr(monbuf, "hwrate=") && strstr(monbuf, "vol="),
+          "monitor log file written while stream active");
+    /* 流停止即停写 */
+    do_ctrl(&m8, MSG_AUDIO_STOP, ackM8.stream_id);
+    usleep(1400000);
+    off_t msz1 = -1, msz2 = -1;
+    { int fd = open(monpath, O_RDONLY); if (fd >= 0) { msz1 = lseek(fd, 0, SEEK_END); close(fd); } }
+    usleep(1400000);
+    { int fd = open(monpath, O_RDONLY); if (fd >= 0) { msz2 = lseek(fd, 0, SEEK_END); close(fd); } }
+    check(msz1 >= 0 && msz1 == msz2, "monitor log stops when stream stops");
+    close(m8.fd);
+    stop_audiod();
+
     printf("=== SUMMARY: pass=%d fail=%d ===\n", g_pass, g_fail);
     return g_fail ? 1 : 0;
 }

scripts/build/fw_content.conf

@@ -38,8 +38,8 @@ patch_v2/meow_svc_power/meow_svc_power|/usr/bin/meow_svc_power|39ae3aa255695a97f
 patch_v2/meow_verify/meow_verify|/usr/bin/meow_verify|6c2e8ed24aebe5caf41e7aed391312d5|II期验签 2B（多公钥+v2签名块 agent-221）
 patch_v2/meow_crash/meow_crash|/usr/bin/meow_crash|62781084445e82351bcadbdadbe4c7fc|系统级崩溃捕获 (agent-187)
 patch_v2/meow_svc_perf/meow_svc_perf|/usr/bin/meow_svc_perf|7ea196de9d59ab8cbd1e26edb7762772|性能专项服务 M2.75（net_json 补 network 闭合括号，修 /api/system JSON 解析失败）
-patch_v2/meow_audiod/meow_audiod|/usr/bin/meow_audiod|772cc3d836c06b84efb67edde894cc3e|独占音频守护 M2.96（+真静音写255 修炸耳安全事故）
-patch_v2/meow_audiod/meow_audio|/usr/bin/meow_audio|c23b96490842f54324b855fd9c2467a5|audiod 用户侧 CLI（status/tone/route/vol；connect/write 全有界 2s 超时）
+patch_v2/meow_audiod/meow_audiod|/usr/bin/meow_audiod|ab193a2bd094f2c9f975f0f28ba09cba|独占音频守护 M2.97（+DAC 数字域电平表 rms/peak + 1s 监控日志 audio_monitor_<bootts>.log）
+patch_v2/meow_audiod/meow_audio|/usr/bin/meow_audio|891ab26475ef9e9931bf9147d265dce4|audiod 用户侧 CLI M2.97（+monitor 实时电平表/文本电平条；status 补 rms/peak）
 
 # ---- 开机 init 脚本（etc/init.d，数字决定启动顺序，按文件名自然序）----
 patch_v2/meow_sysui/S70meow_sysui|/etc/init.d/S70meow_sysui|e435affcb56499e5229728c6ae2524b9|sysui 自启 M2.85（launcher.conf enabled=1+迁移）