feat(lyric): 批5 封面双色渐变取色 — SDK meow_img_color纯整数分桶主色+次色(副采样≤3.6k零分配)+launcher播放页/歌词页set_colors注入渐变主题+无封面回退全局主题+meow_lyric_view灰阶随覆盖cur修正;宿主C1-C7全过,0warning,未并入meow_ui.a

patch_v2/meow_launcherd/build_launcher.sh

@@ -29,7 +29,7 @@ SYSROOT="$ROOT/.tools/mipsel-linux-muslsf-cross/mipsel-linux-muslsf"
     font_theme.c keys.c util.c meow_dep.c \
     meow_touch.c meow_settings.c meow_notif.c meow_media.c meow_bgplay.c \
     meow_ams_start.c lock_screen.c lock_screen_ui.c lock_settings.c \
-    "../sdk/meow_lyric.c" "../sdk/meow_lyric_view.c" \
+    "../sdk/meow_lyric.c" "../sdk/meow_lyric_view.c" "../sdk/meow_img_color.c" \
     "../sdk/meow_ui.a" "$SYSROOT/lib/libz.a" -lpthread -o meow_launcherd
 echo "== meow_launcherd =="
 ls -la meow_launcherd

patch_v2/meow_launcherd/now_playing.c

@@ -12,6 +12,7 @@
 #include "meow_launcher_internal.h"
 #include "np_gesture.h"        /* 批4：双页方向感知手势决策（header-only，宿主可单测） */
 #include "meow_lyric_view.h"   /* 批2控件：歌词页渲染（批4接入，数据批3 meow_media_lyric_*） */
+#include "meow_img_color.h"    /* 批5：封面双色取色原语（独立源码，不并入 meow_ui.a） */
 
 
 #define NP_COVER     300          /* 封面边长（方，居中） */
@@ -66,6 +67,56 @@ static void np_cover_load(const meow_media_session_t *s)
     g_np_cover = meow_img_load_file(path);
 }
 
+/* ==================================================================
+ * 批5：封面双色取色（主色+次色）→ 播放页/歌词页动态主题。
+ *   - 何时取：进入 Now Playing 页 / 封面路径变化时（np_cover_theme_update 幂等，按路径缓存）。
+ *   - 取色成本：meow_img_duocolor 内部自适副采样（等效缩略图，≤~3.6k 样本），不额外解码/分配。
+ *   - 缓存：按 artwork 路径；路径未变不重取（g_np_cc_valid + g_np_cc_path）。
+ *   - 回退：无封面/取色失败（g_np_cc_valid=0）→ 歌词页 set_colors(NULL) 用 meow_theme 默认；
+ *     播放页背景/文字走 s_ui_theme() 主题面。
+ * ================================================================== */
+static meow_img_color_theme g_np_cc;
+static int      g_np_cc_valid = 0;
+static char     g_np_cc_path[200] = "";
+
+/* 校验/刷新取色缓存（封面路径变化才重取；幂等）。 */
+static void np_cover_theme_update(void)
+{
+    const meow_media_session_t *s = meow_media_current();
+    const char *art = s ? s->artwork : "";
+    if (g_np_cc_valid && strcmp(g_np_cc_path, art) == 0) return;   /* 缓存命中 */
+    snprintf(g_np_cc_path, sizeof g_np_cc_path, "%s", art);
+    g_np_cc_valid = 0;
+    if (!g_np_cover || !art[0]) return;                          /* 无封面 → 回退主题 */
+    uint32_t mainc = 0, secondc = 0;
+    if (meow_img_duocolor(g_np_cover, &mainc, &secondc) != 0) return;   /* 取色失败 → 回退主题 */
+    meow_img_color_derive(mainc, secondc, meow_theme_get(), &g_np_cc);
+    g_np_cc_valid = 1;
+}
+
+/* 把封面取色注入歌词页（无取色 → NULL 回退 meow_theme 默认）。 */
+static void np_apply_lyric_colors(void)
+{
+    if (!g_np_lyric) return;
+    meow_lyric_view_set_colors(g_np_lyric, g_np_cc_valid ? &g_np_cc.lyr : NULL);
+}
+
+/* 竖向双色渐变填充（无 GPU，逐行整数插值；封面主题背景用）。 */
+static void np_fill_gradient(int x, int y, int w, int h, uint32_t top, uint32_t bottom)
+{
+    if (w <= 0 || h <= 0) return;
+    int tr = (top >> 16) & 255, tg = (top >> 8) & 255, tb = top & 255;
+    int br = (bottom >> 16) & 255, bg = (bottom >> 8) & 255, bb = bottom & 255;
+    int span = h - 1;
+    for (int yy = 0; yy < h; yy++) {
+        int t = span > 0 ? yy * 255 / span : 0;
+        int r = tr + ((br - tr) * t + 128) / 255;
+        int g = tg + ((bg - tg) * t + 128) / 255;
+        int b = tb + ((bb - tb) * t + 128) / 255;
+        fill_rect(x, y + yy, w, 1, ((uint32_t)r << 16) | ((uint32_t)g << 8) | (uint32_t)b);
+    }
+}
+
 #if 0 /* ================================================================
        * M7.0b 退役：Now Playing 手绘控制钮/进度条改走 SDK 控件（meow_iconbtn +
        * meow_progress），命中/状态/进度全由 SDK 接管；保留作回退位（删除 #if 0 行恢复旧手绘）。
@@ -166,13 +217,14 @@ static void np_widgets_create(void)
     g_np_init = 1;
 }
 
-/* 主题刷新：播放钮底色/图标随当前主题（明暗/风格切换后跟手）。 */
+/* 主题刷新：播放钮底色/图标随当前主题（明暗/风格切换后跟手）；批5 封面取色时随 accent。 */
 static void np_refresh_theme(void)
 {
     if (!g_np_init) return;
     const meow_theme *th = meow_theme_get();
     meow_widget_opts op; memset(&op, 0, sizeof op);
-    op.bg = th->primary; op.fg = th->onPrimary;
+    op.bg = g_np_cc_valid ? g_np_cc.accent : th->primary;
+    op.fg = g_np_cc_valid ? g_np_cc.accent_fg : th->onPrimary;
     if (g_np_play)  meow_widget_set_opts(g_np_play, &op);
     if (g_np_pause) meow_widget_set_opts(g_np_pause, &op);
 }
@@ -201,8 +253,9 @@ static void np_draw_progress(const meow_media_session_t *s, uint32_t pos, const
     unsigned dm = (s->dur_ms ? s->dur_ms : 0) / 60000u, ds = (s->dur_ms ? s->dur_ms : 0) % 60000u / 1000u;
     snprintf(l, sizeof l, "%u:%02u", lm, ls);
     snprintf(rbuf, sizeof rbuf, "%u:%02u", dm, ds);
-    ui_draw(NP_PROG_X, NP_TIME_Y, l, th->on_surface_variant, 16);
-    ui_draw(NP_PROG_X + NP_PROG_W - ui_width(rbuf, 16), NP_TIME_Y, rbuf, th->on_surface_variant, 16);
+    uint32_t tcol = g_np_cc_valid ? g_np_cc.fg_dim : th->on_surface_variant;
+    ui_draw(NP_PROG_X, NP_TIME_Y, l, tcol, 16);
+    ui_draw(NP_PROG_X + NP_PROG_W - ui_width(rbuf, 16), NP_TIME_Y, rbuf, tcol, 16);
 }
 
 /* ==================================================================
@@ -238,14 +291,20 @@ static void np_lyric_refresh(const meow_media_session_t *s)
     g_np_lyric_last_valid = valid;
 }
 
-/* 歌词页整页绘制：铺 theme surface 底 → lyric_view（自绘 scrim + 歌词/空态）。 */
+/* 歌词页整页绘制：铺封面取色渐变（或 theme surface）底 → lyric_view（自绘 scrim + 歌词/空态）。 */
 static void np_draw_lyric_page(int redraw_sb)
 {
     const meow_ui_theme_t *th = s_ui_theme();
     int W = fb_xres, H = fb_yres;
     if (!g_np_init) np_widgets_create();
     if (redraw_sb) fill_rect(0, 0, W, SB_BAR_H, th->surface);
-    fill_rect(0, SB_BAR_H, W, H - SB_BAR_H, th->surface);
+    /* 批5：封面取色背景（主→次渐变）或主题面；并注入歌词页 set_colors。 */
+    np_cover_theme_update();
+    if (g_np_cc_valid)
+        np_fill_gradient(0, SB_BAR_H, W, H - SB_BAR_H, g_np_cc.bg_top, g_np_cc.bg_bottom);
+    else
+        fill_rect(0, SB_BAR_H, W, H - SB_BAR_H, th->surface);
+    np_apply_lyric_colors();
     np_lyric_refresh(meow_media_current());
     if (g_np_lyric)
         meow_widget_draw(meow_lyric_view_widget(g_np_lyric));
@@ -264,10 +323,10 @@ static void np_draw_page(int redraw_sb)
         return;
     }
     if (redraw_sb) fill_rect(0, 0, W, SB_BAR_H, th->surface);
-    fill_rect(0, SB_BAR_H, W, H - SB_BAR_H, th->surface);
     const meow_media_session_t *s = meow_media_current();
     if (!s || s->state == MEOW_MEDIA_STOPPED) {
         /* 空态占位（M7.0b 文案走 meow_str，未知 id 回退中文） */
+        fill_rect(0, SB_BAR_H, W, H - SB_BAR_H, th->surface);
         const char *t1 = meow_str_zh("np.not_playing", "未在播放");
         ui_draw((W - ui_width(t1, 26)) / 2, 300, t1, th->on_surface_variant, 26);
         const char *t2 = meow_str_zh("np.open_app_hint", "打开播放 App 以显示正在播放");
@@ -278,6 +337,14 @@ static void np_draw_page(int redraw_sb)
         return;
     }
     np_cover_load(s);
+    /* 批5：封面取色（主/次色）+ 背景渐变或主题面；并注入歌词页 set_colors。
+     * np_cover_theme_update 幂等（封面路径不变不重取）；无封面/取色失败回退 meow_theme。 */
+    np_cover_theme_update();
+    if (g_np_cc_valid)
+        np_fill_gradient(0, SB_BAR_H, W, H - SB_BAR_H, g_np_cc.bg_top, g_np_cc.bg_bottom);
+    else
+        fill_rect(0, SB_BAR_H, W, H - SB_BAR_H, th->surface);
+    np_apply_lyric_colors();
     /* 封面：解码缓存 + 圆角裁方；无封面回退主题色占位 + 首字 */
     if (g_np_cover) {
         meow_gfx_fill_round(NP_COVER_X - 6, NP_COVER_Y - 6, NP_COVER + 12, NP_COVER + 12, 18, th->surface_container);
@@ -290,11 +357,11 @@ static void np_draw_page(int redraw_sb)
         ui_draw(NP_COVER_X + (NP_COVER - cw) / 2, NP_COVER_Y + (NP_COVER - meow_font_line_height(22)) / 2,
                 t, meow_theme_get()->onPrimary, 22);
     }
-    /* 元数据 */
-    np_center_text(NP_TITLE_Y, s->title, 26, th->on_surface, W - 40);
-    np_center_text(NP_ARTIST_Y, s->artist, 18, th->on_surface_variant, W - 60);
+    /* 元数据（批5：封面取色时文字随 fg/fg_dim，否则主题面） */
+    np_center_text(NP_TITLE_Y, s->title, 26, g_np_cc_valid ? g_np_cc.fg : th->on_surface, W - 40);
+    np_center_text(NP_ARTIST_Y, s->artist, 18, g_np_cc_valid ? g_np_cc.fg_dim : th->on_surface_variant, W - 60);
     if (s->album[0])
-        np_center_text(NP_ALBUM_Y, s->album, 16, th->on_surface_variant, W - 80);
+        np_center_text(NP_ALBUM_Y, s->album, 16, g_np_cc_valid ? g_np_cc.fg_dim : th->on_surface_variant, W - 80);
     /* 进度（SDK meow_progress） */
     uint32_t pos = meow_media_display_pos(s);
     np_draw_progress(s, pos, th);
@@ -564,4 +631,6 @@ void run_now_playing(struct app *apps, int napps)
     kp_close(&kp_power);
     if (g_np_cover) { meow_img_free(g_np_cover); g_np_cover = NULL; }
     g_np_cover_path[0] = 0;
+    g_np_cc_valid = 0;          /* 批5：退出清取色缓存，下次进入重新取 */
+    g_np_cc_path[0] = 0;
 }