AskaEth
7f4e18b0ed
根因：ipc_media 主循环 `if (now - last_meta >= 1000)` 同样依赖 meow_ui_time_ms()
的坏 64 位值（REPORT §42）→ 条件恒真 → 每个 IPC 轮次都发 MSG_META。
launcher 日志 meow_20261105_122541.log：单次启动 21016 条
`ipc: META app=dev.player.ncm state=0 pos=0/0 -> ACK`，间隔 ~100ms，且全是
无变化的静止帧；launcher 每帧写 2 行日志+归并会话，SD 写放大到整机卡死。
修复：
- 新增 app/play/meta_gate.{h,c}（纯逻辑）：状态/时长/标题/歌手/专辑/封面/歌词
标志变化 → 立即报；播放中位置偏移 ≥5s 重锚（launcher 自己按 last_active 外推）；
心跳播放中 5s / 非播放 30s；硬下限 250ms（任何路径 ≤4 帧/秒）；时钟回退不下溢；
字符串按发送侧截断长度比较（超长标题不得恒判「变了」）。
- ipc_media.send_meta 改为「组快照 → 闸判定 → 才发」，删除 1s 定时器；
时间改 ncm_monotonic_ms()；首帧仍必发（注册媒体源）；发送走 DEBUG 日志。
75 lines
2.7 KiB
C
75 lines
2.7 KiB
C
/* play/meta_gate.c — 见 meta_gate.h 头注释（M10 媒体会话 META 上报闸）。 */
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#include "meta_gate.h"
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#include <string.h>
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static void gate_cp(char *dst, size_t cap, const char *src)
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{
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size_t i = 0;
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if (!dst || cap == 0) return;
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if (src) {
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for (; src[i] && i + 1 < cap; i++) dst[i] = src[i];
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}
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dst[i] = 0;
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}
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void ncm_meta_gate_init(ncm_meta_gate *g)
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{
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if (g) memset(g, 0, sizeof *g);
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}
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static void gate_record(ncm_meta_gate *g, const ncm_meta_snap *s, int64_t now_ms)
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{
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g->inited = 1;
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g->state = s->state;
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g->dur_ms = s->dur_ms;
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g->flags = s->flags;
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g->last_pos_ms = s->pos_ms;
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g->last_send_ms = now_ms;
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gate_cp(g->title, sizeof g->title, s->title);
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gate_cp(g->artist, sizeof g->artist, s->artist);
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gate_cp(g->album, sizeof g->album, s->album);
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gate_cp(g->artwork, sizeof g->artwork, s->artwork);
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}
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/* 只比较「会被发送的那部分」：发送侧同样按 cap 截断，超长串不得因截断而恒判「变了」。 */
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static int str_diff(const char *stored, size_t cap, const char *now)
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{
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size_t i = 0;
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if (!now) now = "";
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for (; i + 1 < cap && stored[i] && stored[i] == now[i]; i++) { }
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if (i + 1 >= cap) return 0; /* 前 cap-1 字符一致且已到截断长度 → 相同 */
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return stored[i] != now[i];
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}
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int ncm_meta_gate_should_send(ncm_meta_gate *g, const ncm_meta_snap *s, int64_t now_ms)
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{
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if (!g || !s) return 0;
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if (!g->inited) { gate_record(g, s, now_ms); return 1; } /* 首帧：注册媒体源 */
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int64_t gap = now_ms - g->last_send_ms;
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if (gap < 0) { /* 时钟回退/异常：重定基准，差值按 0 处理（防下溢成「恒该发」） */
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g->last_send_ms = now_ms;
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gap = 0;
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}
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int changed = (s->state != g->state) ||
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(s->dur_ms != g->dur_ms) ||
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(s->flags != g->flags) ||
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str_diff(g->title, sizeof g->title, s->title) ||
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str_diff(g->artist, sizeof g->artist, s->artist) ||
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str_diff(g->album, sizeof g->album, s->album) ||
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str_diff(g->artwork, sizeof g->artwork, s->artwork);
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int64_t dpos = (int64_t)s->pos_ms - (int64_t)g->last_pos_ms;
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if (dpos < 0) dpos = -dpos; /* seek 前后跳都算偏移 */
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int playing = (s->state == NCM_META_ST_PLAYING || s->state == NCM_META_ST_BUFFER);
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int64_t hb = playing ? NCM_META_HB_PLAY_MS : NCM_META_HB_IDLE_MS;
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if (!changed && dpos < NCM_META_POS_RESEND_MS && gap < hb) return 0;
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if (gap < NCM_META_MIN_GAP_MS) return 0; /* 硬下限：变化挂起，下一轮再发（不快于 4 帧/秒） */
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gate_record(g, s, now_ms);
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return 1;
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}
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