fix(lyric/bt): ①桌面歌词页封面不显示修复(根因:歌词页从不画封面+scrim逐秒叠涂压黑→新增np_draw_lyric_coverbg封面背景+1s整页重绘;播放页封面宿实证非批5破坏) ②alsa.conf pcm.bluealsa DEV自动识别(bt_dev.c:audiod BT打开时bluealsa-cli检测a2dpsrc设备幂等改写DEV=保留codec/ldac_eqmid等);test_bt_dev 14/14,0warning

patch_v2/meow_audiod/test_bt_dev.c

@@ -0,0 +1,116 @@
+/* test_bt_dev.c — 蓝牙 DEV 自识别宿主验证（纯逻辑，bt_dev.c）。
+ *
+ * 覆盖矩阵（对齐任务B 宿主测试要求）：
+ *   D1 bt_dev_detect_mac：a2dpsrc/<MAC> 端点 → 提取 MAC（含 a2dp_source、多空行、多设备取第一个、
+ *      无 a2dpsrc / 空输出 / NULL → -1）。
+ *   D2 bt_dev_rewrite：真实 alsa.conf 文本 → DEV=、device 两处 MAC 换成目标，保留 codec/其余 token；
+ *      同值 → 1（无需改动）；无 pcm.bluealsa / 无 DEV= → -1；带引号风格保留。
+ *
+ * 编译（在 patch_v2/meow_audiod 下）：
+ *   cc -Wall -Wextra -o test_bt_dev test_bt_dev.c bt_dev.c
+ * 运行：./test_bt_dev
+ */
+#include "bt_dev.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static int g_pass = 0, g_fail = 0;
+static void check(int cond, const char *name)
+{
+    if (cond) { printf("  PASS %s\n", name); g_pass++; }
+    else      { printf("  FAIL %s\n", name); g_fail++; }
+}
+
+int main(void)
+{
+    setbuf(stdout, NULL);
+
+    /* ---- D1 设备列表 → 选中 a2dpsrc 连接设备 ---- */
+    {
+        char mac[32] = "";
+        int rc = bt_dev_detect_mac(
+            "a2dpsrc/E0:42:6D:79:C5:98\na2dpsnk/E0:42:6D:79:C5:98\n", mac, sizeof mac);
+        check(rc == 0 && strcmp(mac, "E0:42:6D:79:C5:98") == 0, "D1a a2dpsrc/<MAC> -> extract MAC");
+    }
+    {
+        char mac[32] = "";
+        int rc = bt_dev_detect_mac(
+            "profile/aptx\n\na2dp_source/33:DE:2E:21:AD:30\n", mac, sizeof mac);
+        check(rc == 0 && strcmp(mac, "33:DE:2E:21:AD:30") == 0, "D1b a2dp_source/<MAC> -> extract MAC");
+    }
+    {
+        char mac[32] = "";
+        int rc = bt_dev_detect_mac(
+            "a2dpsrc/AA:BB:CC:DD:EE:FF 0\na2dpsrc/11:22:33:44:55:66 1\n", mac, sizeof mac);
+        check(rc == 0 && strcmp(mac, "AA:BB:CC:DD:EE:FF") == 0, "D1c multi-device -> first a2dpsrc");
+    }
+    {
+        char mac[32] = "";
+        int rc = bt_dev_detect_mac("\n", mac, sizeof mac);
+        check(rc == -1, "D1d empty output -> -1");
+    }
+    {
+        char mac[32] = "";
+        int rc = bt_dev_detect_mac("a2dpsnk/11:22:33:44:55:66\n", mac, sizeof mac);
+        check(rc == -1, "D1e only sink (no a2dpsrc) -> -1");
+    }
+    {
+        char mac[32] = "";
+        int rc = bt_dev_detect_mac(NULL, mac, sizeof mac);
+        check(rc == -1, "D1f NULL input -> -1");
+    }
+
+    /* ---- D2 DEV 串入 / 保留其它 token ---- */
+    {
+        const char *conf =
+            "pcm.bluealsa:DEV=E0:42:6D:79:C5:98 {\n"
+            "    type plug\n"
+            "    slave {\n"
+            "        pcm {\n"
+            "            type bluealsa\n"
+            "            device E0:42:6D:79:C5:98\n"
+            "            profile \"a2dp\"\n"
+            "            codec \"LDAC\"\n"
+            "            ldac_eqmid \"LDAC_ABR\"\n"
+            "        }\n"
+            "    }\n"
+            "}\n";
+        char *out = NULL; size_t olen = 0;
+        int rc = bt_dev_rewrite(conf, strlen(conf), "33:DE:2E:21:AD:30", &out, &olen);
+        check(rc == 0 && out != NULL, "D2a rewrite returns changed");
+        check(out && strstr(out, ":DEV=33:DE:2E:21:AD:30 {"), "D2b DEV= updated");
+        check(out && strstr(out, "device 33:DE:2E:21:AD:30\n"), "D2c device updated");
+        check(out && strstr(out, "codec \"LDAC\"") && strstr(out, "ldac_eqmid \"LDAC_ABR\""),
+              "D2d codec/other tokens preserved");
+        /* 旧 MAC 不再出现 */
+        check(out && !strstr(out, "E0:42:6D:79:C5:98"), "D2e old MAC gone");
+        free(out);
+    }
+    {
+        const char *conf =
+            "pcm.bluealsa:DEV=33:DE:2E:21:AD:30 {\n"
+            "    type plug\n    slave {\n        pcm {\n"
+            "            type bluealsa\n            device 33:DE:2E:21:AD:30\n"
+            "            profile \"a2dp\"\n            codec \"LDAC\"\n        }\n    }\n}\n";
+        char *out = NULL; size_t olen = 0;
+        int rc = bt_dev_rewrite(conf, strlen(conf), "33:DE:2E:21:AD:30", &out, &olen);
+        check(rc == 1 && out == NULL, "D2f same MAC -> unchanged (idempotent)");
+    }
+    {
+        const char *conf = "pcm.bluealsa {\n    type bluealsa\n    device \"E0:42:6D:79:C5:98\"\n}\n";
+        char *out = NULL; size_t olen = 0;
+        int rc = bt_dev_rewrite(conf, strlen(conf), "33:DE:2E:21:AD:30", &out, &olen);
+        check(rc == 0 && out && strstr(out, "device \"33:DE:2E:21:AD:30\""),
+              "D2g quoted device preserved (no DEV= token)");
+        free(out);
+    }
+    {
+        char *out = NULL; size_t olen = 0;
+        int rc = bt_dev_rewrite("pcm.hw {\n    type hw\n}\n", 21, "33:DE:2E:21:AD:30", &out, &olen);
+        check(rc == -1 && out == NULL, "D2h no pcm.bluealsa -> -1");
+    }
+
+    printf(g_fail ? "\nRESULT: %d FAIL(S)\n" : "\nRESULT: ALL PASS\n", g_fail);
+    return g_fail;
+}