Files
MeowOS-For-R3P2/patch_v2/ncm_app/app/logic/appstate.c
T
MeowOS 997f89f879 ncm 三期三批: 歌曲对象瘦身(1324→608B)+滑动窗口(NCM_SONG_WINDOW=256, 取消1000截断支撑任意长度歌单)+播放快照解耦 — agent-251
- core/ncm_api.h: ncm_song_t 瘦身 id24/name128/art96/al96/pic256/dt int32 (1324B→608B)
- appstate.c 滑动窗口: song_ids 全量 trackIds 索引(16384) + songs[256] 窗口感知
  (song_valid 位图/window_base/滑窗 memmove 保留重叠), ensure_range 批网格(100)对齐
  预取, songmeta.c 盘缓存 <cache_dir>/meta/<id>.bin (回滚/二次进入 0 网络请求)
- playlist.c 触底分页退役→视口 ensure(±24 行), 占位行可直点(播放线程 fetch 物化),
  footer 改视口区间/总数
- 播放兼容: g_play.play_song 快照(mu), run_song 起播物化后全链路(下载/歌词/IPC META/
  播放页 UI)读快照——窗口滑出当前播放曲不崩; 边界 song_count→track_ids_count
- 验证(0 真实请求): pagination_sim 全 PASS(5191 无截断/52 批); window_sim 6000 首
  全程下滚 750 步视口全物化/song_detail 恰 60 次/回滚+0 请求/播放 fetch 不滑窗;
  core 宿主+qemu 全 PASS; mipsel -Wall -Wextra 0 warning, bss 2052068→1080900(-47%)
- 未部署真机(设备音频线排查中, 部署留主会话)
2026-09-01 04:03:01 +08:00

501 lines
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/* logic/appstate.c — 应用全局状态:ctx/登录/歌单/歌曲/设置。仅依赖核心库 + SDK meow_config_*。 */
#include "../ncm_app_internal.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define NCM_DEFAULT_DATA "/usr/data/mnt/sd_0/MeowData/dev.player.ncm/data"
/* 滑动窗口互斥(REPORT §17):窗口读写(滑窗/物化/拷贝)全走此锁,见下方窗口节注释。 */
static pthread_mutex_t g_song_mu = PTHREAD_MUTEX_INITIALIZER;
int appstate_init(void)
{
const char *dd = getenv("MEOW_DATA_DIR");
if (!dd || !dd[0]) dd = NCM_DEFAULT_DATA;
strncpy(g_st.data_dir, dd, sizeof g_st.data_dir - 1);
g_st.data_dir[sizeof g_st.data_dir - 1] = 0;
ncm_ctx_init(&g_st.ctx, g_st.data_dir); /* device_id + cookie 载入 + cache */
if (g_st.ctx.cache.dir[0])
ncm_strlcpy(g_st.cache_dir, g_st.ctx.cache.dir, sizeof g_st.cache_dir);
else
ncm_ctx_default_cache_dir(g_st.data_dir, g_st.cache_dir, sizeof g_st.cache_dir);
appstate_load_settings();
g_st.logged_in = (g_st.ctx.cookie[0] != 0);
g_st.active_playlist = -1;
g_st.playing_song = -1;
g_st.qr_size = 0;
g_st.login_state = NCM_LOGIN_PENDING;
/* uid/nickname 从配置恢复(登录时落盘);uid 缺失时不在此阻塞校验——由 home_reload 拉歌单时
* appstate_ensure_uid 触发 login_status_check(启动快,避免首屏长时间网络阻塞)。 */
meow_config_get("ncm.uid", g_st.uid, sizeof g_st.uid);
meow_config_get("ncm.nickname", g_st.nickname, sizeof g_st.nickname);
return 0;
}
void appstate_load_settings(void)
{
g_st.cache_limit_gb = meow_config_int("ncm.cache_limit_gb", 10);
if (g_st.cache_limit_gb < 1) g_st.cache_limit_gb = 1;
if (g_st.cache_limit_gb > 100) g_st.cache_limit_gb = 100;
g_st.level = meow_config_int("ncm.level", NCM_LEVEL_HIRES);
if (g_st.level < NCM_LEVEL_STANDARD || g_st.level > NCM_LEVEL_HIRES)
g_st.level = NCM_LEVEL_HIRES;
ncm_cache_set_limit_gb(&g_st.ctx.cache, g_st.cache_limit_gb);
g_st.ctx.default_level = g_st.level;
}
void appstate_save_settings(void)
{
char b[16];
snprintf(b, sizeof b, "%d", g_st.cache_limit_gb);
meow_config_set("ncm.cache_limit_gb", b);
snprintf(b, sizeof b, "%d", g_st.level);
meow_config_set("ncm.level", b);
ncm_cache_set_limit_gb(&g_st.ctx.cache, g_st.cache_limit_gb);
g_st.ctx.default_level = g_st.level;
/* 手动调低上限时立即按 LRU 淘汰(超上限删最旧);未超限则为无操作 */
ncm_cache_evict(&g_st.ctx.cache);
}
void appstate_set_logged_in(const char *uid, const char *nickname)
{
if (uid && uid[0]) { ncm_strlcpy(g_st.uid, uid, sizeof g_st.uid); meow_config_set("ncm.uid", uid); }
if (nickname && nickname[0]) {
ncm_strlcpy(g_st.nickname, nickname, sizeof g_st.nickname);
meow_config_set("ncm.nickname", nickname);
}
g_st.logged_in = 1;
}
void appstate_logout(void)
{
ncm_ctx_clear_cookie(&g_st.ctx);
g_st.logged_in = 0;
g_st.uid[0] = 0;
g_st.nickname[0] = 0;
g_st.active_playlist = -1;
g_st.playing_song = -1;
pthread_mutex_lock(&g_song_mu);
memset(g_st.song_valid, 0, sizeof g_st.song_valid);
g_st.window_base = 0;
g_st.song_count = 0;
g_st.track_ids_count = 0;
pthread_mutex_unlock(&g_song_mu);
meow_config_remove("ncm.uid");
meow_config_remove("ncm.nickname");
cover_cache_reset();
}
/* 若 uid 缺失(cookie 在但没存 uid),用 login_status_check 校验并取回。返回 0=成功。 */
int appstate_ensure_uid(void)
{
if (!g_st.logged_in || !g_st.ctx.cookie[0]) return NCM_ERR_AUTH;
if (g_st.uid[0]) return NCM_OK;
char uid[32], nick[128];
int rc = ncm_login_status_check(g_st.ctx.device_id, g_st.ctx.cookie, uid, sizeof uid,
nick, sizeof nick);
if (rc == NCM_OK) {
appstate_set_logged_in(uid, nick);
return NCM_OK;
}
/* 会话失效:清 cookie → 未登录 */
if (rc == NCM_ERR_AUTH) {
ncm_ctx_clear_cookie(&g_st.ctx);
g_st.logged_in = 0;
}
return rc;
}
int appstate_load_playlists(void)
{
if (!g_st.logged_in) return NCM_ERR_AUTH;
int rc = appstate_ensure_uid();
if (rc != NCM_OK) return rc;
memset(g_st.playlists, 0, sizeof g_st.playlists);
int n = 0;
rc = ncm_api_user_playlist(g_st.ctx.device_id, g_st.ctx.cookie, g_st.uid,
NCM_PLAYLIST_MAX, 0, g_st.playlists, NCM_PLAYLIST_MAX, &n);
g_st.playlist_count = (rc == NCM_OK) ? n : 0;
meow_log(MEOW_LOG_INFO, "home: playlists rc=%d count=%d uid=%s", rc, g_st.playlist_count, g_st.uid);
return rc;
}
/* ============================================================
* 滑动窗口(REPORT §17,三期第三批)
* songs[i] ↔ 全局下标 window_base+i;song_valid[] 为槽位有效位图。
* 写侧(滑窗/物化)与读侧(song_copy)全走 g_song_mu;网络/盘 IO 在锁外做,
* 锁内只做内存搬移,UI 行回调(song_copy)不被网络阻塞。
* 单写者假设:ensure/page 仅由 playlist worker(及兼容入口)驱动,同一时刻最多一个。
* ============================================================ */
static int slot_valid_locked(int gidx)
{
int s = gidx - g_st.window_base;
return s >= 0 && s < NCM_SONG_WINDOW && g_st.song_valid[s];
}
static void win_recount_locked(void)
{
int n = 0;
for (int i = 0; i < NCM_SONG_WINDOW; i++)
if (g_st.song_valid[i]) n++;
g_st.song_count = n;
}
/* 锁内滑窗:重叠区 songs+valid 一起 memmove 保留,非重叠端清零(出窗槽位失效)。
* 出窗歌曲的元数据此前已落盘(songmeta),丢弃无数据损失。 */
static void win_slide_locked(int new_base)
{
int old_base = g_st.window_base;
if (new_base == old_base) return;
int ov_lo = (old_base > new_base) ? old_base : new_base;
int ov_hi = (old_base + NCM_SONG_WINDOW < new_base + NCM_SONG_WINDOW)
? old_base + NCM_SONG_WINDOW : new_base + NCM_SONG_WINDOW;
if (ov_lo < ov_hi) {
int src = ov_lo - old_base, dst = ov_lo - new_base, n = ov_hi - ov_lo;
memmove(&g_st.songs[dst], &g_st.songs[src], (size_t)n * sizeof(ncm_song_t));
memmove(&g_st.song_valid[dst], &g_st.song_valid[src], (size_t)n);
if (dst > 0) memset(g_st.song_valid, 0, (size_t)dst);
if (dst + n < NCM_SONG_WINDOW)
memset(&g_st.song_valid[dst + n], 0, (size_t)(NCM_SONG_WINDOW - dst - n));
} else {
memset(g_st.song_valid, 0, sizeof g_st.song_valid);
}
g_st.window_base = new_base;
win_recount_locked();
}
int appstate_range_loaded(int lo, int hi)
{
if (lo < 0) lo = 0;
if (hi > g_st.track_ids_count) hi = g_st.track_ids_count;
if (lo >= hi) return 1;
pthread_mutex_lock(&g_song_mu);
int ok = 1;
for (int i = lo; i < hi; i++)
if (!slot_valid_locked(i)) { ok = 0; break; }
pthread_mutex_unlock(&g_song_mu);
return ok;
}
int appstate_song_copy(int gidx, ncm_song_t *out)
{
if (!out) return -1;
pthread_mutex_lock(&g_song_mu);
int s = gidx - g_st.window_base;
int ok = (s >= 0 && s < NCM_SONG_WINDOW && g_st.song_valid[s]);
if (ok) *out = g_st.songs[s];
pthread_mutex_unlock(&g_song_mu);
return ok ? 0 : -1;
}
int appstate_song_ensure_range(int lo, int hi)
{
if (lo < 0) lo = 0;
if (hi > g_st.track_ids_count) hi = g_st.track_ids_count;
if (lo >= hi) return NCM_OK;
/* 目标基址:请求区间居中(前后留余量,滚动反向时不立即滑窗),钳制到合法范围。 */
int base;
if (hi - lo <= NCM_SONG_WINDOW) {
base = (lo + hi) / 2 - NCM_SONG_WINDOW / 2;
if (base > lo) base = lo;
if (base + NCM_SONG_WINDOW < hi) base = hi - NCM_SONG_WINDOW;
int maxb = g_st.track_ids_count - NCM_SONG_WINDOW;
if (maxb < 0) maxb = 0;
if (base > maxb) base = maxb;
if (base < 0) base = 0;
} else {
base = lo; /* 请求区间超窗(不应发生):覆盖前缀 */
}
pthread_mutex_lock(&g_song_mu);
int covered = 1;
for (int i = lo; i < hi; i++)
if (!slot_valid_locked(i)) { covered = 0; break; }
if (!covered && base != g_st.window_base) win_slide_locked(base);
else base = g_st.window_base; /* 已覆盖:维持原基址 */
pthread_mutex_unlock(&g_song_mu);
if (covered) return NCM_OK;
/* 逐段补齐 [lo,hi) 内 invalid 槽:先试盘缓存(songmeta),miss 攒批 ≤NCM_SONG_BATCH
* 走 song_detail;成功写窗 + 落盘。网络/盘 IO 均在锁外,锁内仅写槽。 */
static ncm_song_t s_fetch[NCM_SONG_BATCH]; /* 单写者(playlist worker),免 60KB 栈 */
int rc = NCM_OK;
for (int a = lo; a < hi && rc == NCM_OK; ) {
pthread_mutex_lock(&g_song_mu);
int va = slot_valid_locked(a);
pthread_mutex_unlock(&g_song_mu);
if (va) { a++; continue; }
int b = a + 1;
while (b < hi && b - a < NCM_SONG_BATCH) {
pthread_mutex_lock(&g_song_mu);
int vb = slot_valid_locked(b);
pthread_mutex_unlock(&g_song_mu);
if (vb) break;
b++;
}
/* 批网格对齐预取:把 [a,b) 扩到 song_detail 批边界(§17.4——逐行滚动时若按原始
* 小区间拉取,song_detail 调用次数会放大到 ~歌单长度/滚动步长;对齐到 100 首
* 网格后每次补齐整批,总请求数 ≈ 歌单长度/NCM_SONG_BATCH)。 */
int a0 = (a / NCM_SONG_BATCH) * NCM_SONG_BATCH;
int b0 = ((b + NCM_SONG_BATCH - 1) / NCM_SONG_BATCH) * NCM_SONG_BATCH;
int wend2 = g_st.window_base + NCM_SONG_WINDOW;
if (wend2 > g_st.track_ids_count) wend2 = g_st.track_ids_count;
if (a0 < g_st.window_base) a0 = g_st.window_base;
if (b0 > wend2) b0 = wend2;
if (b0 - a0 > NCM_SONG_BATCH) b0 = a0 + NCM_SONG_BATCH;
/* 本段 [a0,b0):盘命中直接写窗,有效槽跳过,miss 记录待批拉 */
int64_t ids[NCM_SONG_BATCH];
int gslot[NCM_SONG_BATCH];
int m = 0;
for (int i = a0; i < b0; i++) {
pthread_mutex_lock(&g_song_mu);
int vv = slot_valid_locked(i);
pthread_mutex_unlock(&g_song_mu);
if (vv) continue;
char sid[24];
snprintf(sid, sizeof sid, "%lld", (long long)g_st.song_ids[i]);
ncm_song_t ms;
if (songmeta_load(g_st.cache_dir, sid, &ms) == NCM_OK) {
pthread_mutex_lock(&g_song_mu);
int s = i - g_st.window_base;
if (s >= 0 && s < NCM_SONG_WINDOW) {
g_st.songs[s] = ms;
g_st.song_valid[s] = 1;
}
pthread_mutex_unlock(&g_song_mu);
} else {
ids[m] = g_st.song_ids[i];
gslot[m] = i;
m++;
}
}
if (m > 0) {
int bn = 0;
int r2 = ncm_api_song_detail(g_st.ctx.device_id, g_st.ctx.cookie,
ids, m, s_fetch, NCM_SONG_BATCH, &bn);
if (r2 != NCM_OK) { rc = r2; break; }
if (bn > m) bn = m;
for (int k = 0; k < bn; k++) { /* song_detail 结果与请求 ids 同序 */
pthread_mutex_lock(&g_song_mu);
int s = gslot[k] - g_st.window_base;
if (s >= 0 && s < NCM_SONG_WINDOW) {
g_st.songs[s] = s_fetch[k];
g_st.song_valid[s] = 1;
}
pthread_mutex_unlock(&g_song_mu);
char sid[24];
snprintf(sid, sizeof sid, "%lld", (long long)ids[k]);
songmeta_save(g_st.cache_dir, sid, &s_fetch[k]);
}
if (bn < m) rc = NCM_ERR_JSON; /* 部分返回:缺槽留 invalid,下次 ensure 再试 */
}
a = b;
}
pthread_mutex_lock(&g_song_mu);
win_recount_locked();
pthread_mutex_unlock(&g_song_mu);
return rc;
}
int appstate_song_fetch(int gidx, ncm_song_t *out)
{
if (!out) return NCM_ERR_ARG;
if (appstate_song_copy(gidx, out) == 0) return NCM_OK; /* 窗内直接命中 */
if (gidx < 0 || gidx >= g_st.track_ids_count) return NCM_ERR_ARG;
int64_t id = g_st.song_ids[gidx];
if (id == 0) return NCM_ERR_ARG; /* 无索引(如搜索上下文窗外) */
char sid[24];
snprintf(sid, sizeof sid, "%lld", (long long)id);
if (songmeta_load(g_st.cache_dir, sid, out) == NCM_OK) return NCM_OK; /* 盘缓存 */
int bn = 0;
int rc = ncm_api_song_detail(g_st.ctx.device_id, g_st.ctx.cookie, &id, 1, out, 1, &bn);
if (rc != NCM_OK) return rc;
if (bn < 1) return NCM_ERR_NOTFOUND;
songmeta_save(g_st.cache_dir, sid, out);
return NCM_OK;
}
void appstate_adopt_songs(int n)
{
pthread_mutex_lock(&g_song_mu);
if (n < 0) n = 0;
if (n > NCM_SONG_WINDOW) n = NCM_SONG_WINDOW;
memset(g_st.song_valid, 0, sizeof g_st.song_valid);
for (int i = 0; i < n; i++) {
g_st.song_valid[i] = 1;
g_st.song_ids[i] = strtoll(g_st.songs[i].id, NULL, 10);
}
g_st.window_base = 0;
g_st.song_count = n;
g_st.track_ids_count = n;
pthread_mutex_unlock(&g_song_mu);
}
int appstate_load_playlist_songs_page(int idx, int offset, int limit)
{
if (idx < 0 || idx >= g_st.playlist_count) return NCM_ERR_ARG;
/* 不在此处写 g_st.active_playlist:调用方(playlist_open/UI)已在 UI 线程设定;
* 若后台 worker 在此改写,会覆盖用户已切换到的新歌单,造成“打开 B 却显示 A”。 */
const ncm_playlist_t *pl = &g_st.playlists[idx];
if (limit <= 0 || limit > NCM_SONG_BATCH) limit = NCM_SONG_BATCH;
if (offset < 0) offset = 0;
/* REPORT §13.1:/api/playlist/track/all 服务端分页端点真机全 404(NCM 无此路由),弃用。
* §14 的分页(append-only 到 NCM_SONG_MAX=1000 截断)在 §17 升级为滑动窗口:
* detail(n=1)仍取【全量】trackIds 入 song_ids[](≤ NCM_TRACKID_MAX,支撑 6000+ 首),
* 歌曲对象只物化视口附近的 NCM_SONG_WINDOW 首(offset 为「要确保的区间」起点)。 */
if (offset == 0) {
/* 重头:清窗口 + 重建 trackIds 索引(song_count/track_ids_count 无论成败都归零)。 */
pthread_mutex_lock(&g_song_mu);
memset(g_st.song_valid, 0, sizeof g_st.song_valid);
memset(g_st.song_ids, 0, sizeof g_st.song_ids);
g_st.window_base = 0;
g_st.song_count = 0;
g_st.track_ids_count = 0;
pthread_mutex_unlock(&g_song_mu);
int idn = 0;
int rc = ncm_api_playlist_detail(g_st.ctx.device_id, g_st.ctx.cookie, pl->id,
NULL, 0, NULL, 0,
g_st.song_ids, NCM_TRACKID_MAX, &idn);
if (rc != NCM_OK) return rc;
g_st.track_ids_count = idn;
appstate_apply_playlist_cover(idx);
} else if (g_st.track_ids_count == 0) {
/* 防御:offset>0 但没有索引(不应发生;主路径先走 offset=0)。 */
return NCM_ERR_ARG;
}
if (offset >= g_st.track_ids_count) return NCM_OK; /* 已到尾部 */
int hi = offset + limit;
if (hi > g_st.track_ids_count) hi = g_st.track_ids_count;
return appstate_song_ensure_range(offset, hi);
}
int appstate_load_playlist_songs(int idx)
{
/* 兼容入口:载索引 + 物化首个窗口。 */
int rc = appstate_load_playlist_songs_page(idx, 0, NCM_SONG_BATCH);
if (rc != NCM_OK) return rc;
int hi = (g_st.track_ids_count < NCM_SONG_WINDOW) ? g_st.track_ids_count : NCM_SONG_WINDOW;
return appstate_song_ensure_range(0, hi);
}
void appstate_apply_playlist_cover(int idx)
{
if (idx < 0 || idx >= g_st.playlist_count) return;
ncm_strlcpy(g_st.cover_url, g_st.playlists[idx].cover, sizeof g_st.cover_url);
}
/* 设置播放页当前歌曲 + 封面 URL(player 页 UI 读)。idx=-1 表示清除。 */
void appstate_set_playing_song(int idx, const char *cover_url)
{
g_st.playing_song = idx;
if (cover_url && cover_url[0])
ncm_strlcpy(g_st.cover_url, cover_url, sizeof g_st.cover_url);
}
int appstate_current_playing(void)
{
if (g_st.playing_song < 0 || g_st.playing_song >= g_st.track_ids_count) return -1;
return g_st.playing_song;
}
/* ---- 真机联调 autoplay hook(A2 音频迁移验收用,非正式能力)----
* 触发文件 /tmp/ncm_autoplay 存在且 home 歌单已载 → 后台线程找「已缓存」曲目并播放:
* - 内容为纯数字 → 从该歌单下标起扫最多 AUTOPLAY_SCAN_PL 个歌单首页;
* - 内容为其它文本 → 按歌单名子串匹配**单个**歌单(如 "Docu";避开超大歌单的
* 全量 trackIds 解析,真机联调省时省内存);
* - 空文件 → 从 0 起扫。
* 风控纪律:**绝不发 song_url 下载**——无缓存命中只记日志退出;metadata 请求 = 每歌单
* 1 detail + 1 song_detail(≤ 2×AUTOPLAY_SCAN_PL 次)。 */
#define AUTOPLAY_TRIGGER "/tmp/ncm_autoplay"
#define AUTOPLAY_SCAN_PL 3
/* 播放单个歌单首页中第一首已缓存曲目。命中播放返回 1,否则 0。 */
static int autoplay_try_playlist(int pl)
{
int rc = appstate_load_playlist_songs_page(pl, 0, NCM_SONG_BATCH);
if (rc != NCM_OK) {
meow_log(MEOW_LOG_WARN, "autoplay: playlist[%d] load rc=%d", pl, rc);
return 0;
}
char cpath[600];
for (int i = 0; i < g_st.track_ids_count; i++) { /* 滑窗模型:锁内拷贝窗内有效槽 */
ncm_song_t s;
if (appstate_song_copy(i, &s) != 0) break; /* 出窗即停(首页之后未物化) */
if (ncm_cache_lookup(&g_st.ctx.cache, s.id, ".mp3",
cpath, sizeof cpath) == NCM_OK) {
g_st.active_playlist = pl;
meow_log(MEOW_LOG_INFO, "autoplay: playlist[%d] song[%d] id=%s cached -> play",
pl, i, s.id);
player_manager_play(i);
return 1;
}
}
meow_log(MEOW_LOG_INFO, "autoplay: playlist[%d] first window %d/%d songs, no cached track",
pl, g_st.song_count, g_st.track_ids_count);
return 0;
}
static void *autoplay_worker(void *arg)
{
const char *sel = (const char *)arg; /* NULL=从 0 起扫;数字=起始下标;其它=歌单名子串 */
if (sel && sel[0] && !(sel[0] >= '0' && sel[0] <= '9')) {
for (int pl = 0; pl < g_st.playlist_count && !g_app_quit; pl++) {
if (strstr(g_st.playlists[pl].name, sel)) {
meow_log(MEOW_LOG_INFO, "autoplay: name '%s' -> playlist[%d] '%s' (%d tracks)",
sel, pl, g_st.playlists[pl].name, g_st.playlists[pl].track_count);
if (autoplay_try_playlist(pl)) { free((void *)sel); return NULL; }
break;
}
}
meow_log(MEOW_LOG_WARN, "autoplay: no playlist name match / no cached track ('%s')", sel);
free((void *)sel);
return NULL;
}
int start = (sel && sel[0]) ? atoi(sel) : 0;
free((void *)sel);
if (start < 0) start = 0;
int end = start + AUTOPLAY_SCAN_PL;
if (end > g_st.playlist_count) end = g_st.playlist_count;
for (int pl = start; pl < end && !g_app_quit; pl++)
if (autoplay_try_playlist(pl)) return NULL;
meow_log(MEOW_LOG_WARN, "autoplay: no cached track found (no download, risk control)");
return NULL;
}
void autoplay_maybe(void)
{
static int s_fired = 0;
if (s_fired || g_app_quit) return;
if (access(AUTOPLAY_TRIGGER, F_OK) != 0) return;
if (!g_st.logged_in || g_st.playlist_count <= 0) return; /* 等 home 歌单载完 */
s_fired = 1;
char buf[64] = "";
FILE *f = fopen(AUTOPLAY_TRIGGER, "r"); /* 一次性:读完即删 */
if (f) {
if (fgets(buf, sizeof buf, f)) {
size_t n = strlen(buf);
while (n && (buf[n - 1] == '\n' || buf[n - 1] == '\r' || buf[n - 1] == ' ')) buf[--n] = 0;
}
fclose(f);
}
unlink(AUTOPLAY_TRIGGER);
meow_log(MEOW_LOG_INFO, "autoplay: triggered, sel='%s'", buf);
char *sel = strdup(buf);
pthread_t t;
if (pthread_create(&t, NULL, autoplay_worker, sel) == 0) pthread_detach(t);
else free(sel);
}