feat(media): 批3歌词数据源框架 — meow_media_session扩实时歌词(lrc/tlrc/seq)+MSG_META_LYRIC上报分片+ncm上报+launcher读meow_media_lyric_* 接批1/2;宿主L1-L7全过/ncm热更27554dd8,launcher待固件收编

patch_v2/ncm_app/app/play/ipc_media.c

@@ -295,3 +295,47 @@ void ipc_media_stop(void)
     /* 线程在 200ms poll 内退出（detach，不 join）*/
     g_thr_on = 0;
 }
+
+/* ---- 批3：live 歌词上报（lrc 原文 + tlrc 翻译 → 媒体会话，桌面歌词页实时滚动源）---- */
+
+/* 歌词代际（换歌/换词自增；launcher 见新 seq 清旧词）。IC 线程外调用（lyric_worker），
+ * 单线程写（worker 是唯一调用者），无需锁。 */
+static uint32_t g_lyr_media_seq;
+
+/* 把一个 kind 的歌词文本按分片发到媒体会话（≤MEOW_LYRIC_CHUNK 一帧）。cmax=该 kind 上限：
+ * 0=MEOW_MEDIA_LRC_MAX，1=MEOW_MEDIA_TLRC_MAX。total=0（空串）时发一个空帧=清词。 */
+static void send_lyric_kind(int fd, uint32_t seq, uint16_t kind, const char *text, size_t cmax)
+{
+    if (!text) text = "";
+    size_t total = strlen(text);
+    if (total > cmax) total = cmax;            /* 接收侧缓冲上限：超限截断 */
+    size_t off = 0;
+    do {
+        size_t n = total - off;
+        if (n > MEOW_LYRIC_CHUNK) n = MEOW_LYRIC_CHUNK;
+        m_lyric_t ly;
+        memset(&ly, 0, sizeof ly);
+        ncm_strlcpy(ly.app_id, "dev.player.ncm", sizeof ly.app_id);
+        ly.seq   = seq;
+        ly.kind  = kind;
+        ly.total = (uint16_t)total;
+        ly.off   = (uint16_t)off;
+        ly.len   = (uint16_t)n;
+        if (n) memcpy(ly.data, text + off, n);
+        ly.data[n] = 0;
+        send_frame(fd, MSG_META_LYRIC, seq, &ly, sizeof ly);
+        off += n;
+    } while (off < total);
+}
+
+void ipc_media_lyric_report(const char *lrc, const char *tl)
+{
+    g_lyr_media_seq++;
+    int fd = connect_path(sock_path());
+    if (fd < 0) { meow_log(MEOW_LOG_WARN, "ipc: lyric no launcher socket"); return; }
+    send_lyric_kind(fd, g_lyr_media_seq, 0, lrc, MEOW_MEDIA_LRC_MAX);   /* 原文 */
+    send_lyric_kind(fd, g_lyr_media_seq, 1, tl,  MEOW_MEDIA_TLRC_MAX);  /* 翻译 */
+    close(fd);
+    meow_log(MEOW_LOG_INFO, "ipc: lyric reported seq=%u lrc=%zuB tlrc=%zuB",
+             g_lyr_media_seq, lrc ? strlen(lrc) : 0, tl ? strlen(tl) : 0);
+}

patch_v2/ncm_app/app/play/player_manager.c

@@ -1045,8 +1045,14 @@ static void *lyric_worker(void *arg)
             pthread_mutex_lock(&g_lyrmu); g_lyr_state = 0; pthread_mutex_unlock(&g_lyrmu);
             continue;
         }
+        lrc[0] = tl[0] = 0;      /* 默认空串（fetch 失败/空词时上报清词，防会话留旧曲歌词） */
         int rc = ncm_api_lyric(g_st.ctx.device_id, g_st.ctx.cookie, id, lrc, 64 * 1024, tl, 32 * 1024);
-        if (rc == NCM_OK) lyric_parse(lrc, tl);
+        if (rc == NCM_OK) {
+            lyric_parse(lrc, tl);
+            ipc_media_lyric_report(lrc, tl);      /* 批3：上报 live 歌词到媒体会话 */
+        } else {
+            ipc_media_lyric_report("", "");       /* 无词/拉取失败：清 media session 该曲歌词 */
+        }
         free(lrc); free(tl);
 
         pthread_mutex_lock(&g_lyrmu);