MeowOS
e6f0b665e3
- 14 模块 .c + meow_launcher_internal.h(642): util/font_theme/fb_compositor/settings_page/power_menu/notif_center/app_launcher/main_menu/audio/backlight/net/keys/about/statusbar; meow_launcherd.c 已删 - 按行逐字搬移(0-diff), 118函数提升非static+47组extern(内部头), #if0退役区不编入(源码留.pre_split.bak) - 关于本机小改: 作者 AskaEth/17 + info/item[13]防越界 + s_dd_modal 超高滚动(clamp/触摸滚动/音量键跟随/裁剪, 仅超高启用) - build_launcher.sh 编译列表→模块; 文档/注释引用 meow_launcherd.c→模块/目录 - 编译0warning/-Wall -Wextra告警集与原文一致(77条无新增)/qemu-mipsel冒烟一致(--scan/--sysdump); launcher=c0799357(505KB; md5因多文件重编译与原文异,非回归依据) - 备份 meow_launcherd.c.pre_split.bak/meow_launcherd.pre_split.bak; M2.69(0.7.64)已推卡并用户验证OK
223 lines
11 KiB
C
223 lines
11 KiB
C
/* fb_compositor.c — MeowOS launcher 拆分模块（LAUNCHER_SPLIT_PLAN 拆分）。*/
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/* 本文件由拆分工具从 meow_launcherd.c 按职责搬移；逻辑与原文 0-diff（仅 static 可见性按跨模块需求调整）。*/
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#include "meow_launcher_internal.h"
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unsigned char *fb; /* 绘制目标指针 = SDK 的 back_buf（A-1/A-2：launcher 与 app 统一渲染栈） */
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static unsigned char *fb_mem = NULL; /* 真实 mmap 帧缓冲（播放器帧备份/恢复源 + app 帧读回 + 双缓冲 yoffset 用） */
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int fb_xres, fb_yres, fb_line, fb_bpp;
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int fb_fd = -1;
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static unsigned int fb_yres_virtual = 0; /* virtual height (double-buffer = 2*yres) */
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static unsigned int fb_active_yoffset = 0; /* scanline of the displayed buffer (0 or yres) */
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static int fb_orig_yoffset = -1; /* player's yoffset at menu open (saved) */
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static unsigned char *fb_player_backup = NULL;
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static size_t fb_player_backup_len = 0;
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/* ---- A-1/A-2：launcher 用 SDK 渲染栈 ----
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* fb 指向 SDK 的 back_buf（meow_ui_back_buf()），所有绘制（put_px/meow_font/dim_screen/
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* draw_menu/statusbar/电源菜单/确认框）画进 SDK 的离屏；呈现统一走 meow_ui_flush()（= SDK present，
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* 内含 vsync + 帧率门控 + 原子 blit 脏区）。launcher 不再自建 back_buf/meow_present/帧率门控。
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* fb_mem 仍保留 launcher 自有的全虚拟 mmap：仅用于播放器帧备份/恢复/双缓冲 yoffset 切换
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* （fb_backup_player/fb_norm_buf0/fb_restore_player/fb_pan_buf0_force）与 app 帧读回
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* （pm_capture_app_frame）——这些是「显示 buffer/页码切换」，与「present 上屏」不同层，不动。 */
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int back_buf_ok = 0; /* fb 是否指向 SDK back_buf（1=可经 SDK present 上屏） */
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int fb_open(void)
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{
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int fd = open(FB_DEV, O_RDWR);
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if (fd < 0) { logmsg("fb open failed: %s", strerror(errno)); return -1; }
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unsigned char vinfo[160], finfo[68];
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memset(vinfo, 0, sizeof vinfo);
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memset(finfo, 0, sizeof finfo);
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if (ioctl(fd, FBIOGET_VSCREENINFO, vinfo) < 0 ||
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ioctl(fd, FBIOGET_FSCREENINFO, finfo) < 0) {
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logmsg("fb ioctl failed"); close(fd); return -1;
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}
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fb_xres = *(uint32_t *)(vinfo + 0);
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fb_yres = *(uint32_t *)(vinfo + 4);
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fb_yres_virtual = *(uint32_t *)(vinfo + 12);
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fb_active_yoffset = *(uint32_t *)(vinfo + 20);
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fb_bpp = *(uint32_t *)(vinfo + 24);
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fb_line = *(uint32_t *)(finfo + 44);
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if (!fb_line) fb_line = fb_xres * (fb_bpp / 8);
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/* v6.6: fb0 is DOUBLE-BUFFERED (verified yres_virtual=1440=2*720,
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* smem_len=2 frames, ypanstep=1). The displayed buffer is selected by
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* yoffset (FBIOPAN_DISPLAY 0x4606 verified to flip it). Map the FULL
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* virtual framebuffer so we can read/write both buffers for the
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* backup/restore below; mmapping only one frame would let the menu
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* land on the buffer the panel is NOT showing. */
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if (fb_yres_virtual < fb_yres) fb_yres_virtual = fb_yres; /* single buffer */
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fb_mem = mmap(NULL, (size_t)fb_line * fb_yres_virtual,
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PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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if (fb_mem == MAP_FAILED) {
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logmsg("fb mmap failed: %s (xres=%d yres=%d bpp=%d line=%d size=%d)",
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strerror(errno), fb_xres, fb_yres, fb_bpp, fb_line,
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fb_line * fb_yres_virtual);
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close(fd);
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return -1;
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}
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fb_fd = fd;
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/* A-1/A-2：launcher 用 SDK 渲染栈 —— fb 指向 SDK 的 back_buf（统一离屏），present 统一走
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* meow_ui_flush()（SDK present：vsync + 帧率门控 + 原子 blit 脏区）。不再自建 back_buf。
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* fb_mem（本函数 mmap 的全虚拟 fb）仅保留给播放器帧备份/恢复 + yoffset 切换 + app 帧读回。 */
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fb = meow_ui_back_buf();
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if (fb) {
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back_buf_ok = 1;
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meow_dirty_full();
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logmsg("fb: %dx%d bpp=%d line=%d vres=%u yoffset=%u (A-1/A-2 SDK back_buf, meow_ui_flush)",
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fb_xres, fb_yres, fb_bpp, fb_line, fb_yres_virtual, fb_active_yoffset);
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} else {
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fb = fb_mem; back_buf_ok = 0;
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logmsg("fb: no SDK back_buf -> direct fb write (present disabled)");
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}
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/* NOTE: the panel is NOT unblanked here anymore — the player may still
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* be running at this point (stop_player() comes after fb_open) and its
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* screen-off state machine would re-blank the panel behind the menu.
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* unblank_panel() runs after stop_player() (v6.2 hotfix) so the frozen
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* player cannot re-blank and the menu stays visible. */
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return fd;
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}
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/* ---- double-buffer handling (v6.6) --------------------------------
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* fb0 is double-buffered and the DISPLAYED buffer is chosen by fb_var's
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* yoffset (FBIOPAN_DISPLAY flips it). The player page-flips via yoffset (its
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* power/screen-off redraw leaves yoffset on the back buffer), so the menu
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* MUST be drawn to the buffer the panel actually shows — otherwise the menu
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* is invisible and the screen freezes on the player's last frame (the v6.5
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* bug). Strategy: snapshot the player's displayed frame into a heap backup,
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* pan the display to buffer0 (what the launcher and all apps draw to — apps
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* like hello.c mmap exactly one frame at offset 0 and never pan), draw the
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* menu/app-list to buffer0, and on session end copy the backup back to the
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* player's buffer and pan to the original yoffset so a SIGSTOPped player that
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* does NOT redraw (event-driven, ANALYSIS §18.15) still shows its own frame. */
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/* Snapshot the player's currently-displayed frame into a heap backup. */
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void fb_backup_player(void)
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{
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if (fb_yres_virtual <= fb_yres) { fb_orig_yoffset = -1; return; } /* single buffer */
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if (fb_active_yoffset >= fb_yres_virtual) fb_active_yoffset = 0;
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fb_orig_yoffset = (int)fb_active_yoffset;
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fb_player_backup_len = (size_t)fb_line * fb_yres;
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fb_player_backup = malloc(fb_player_backup_len);
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if (!fb_player_backup) {
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logmsg("fb backup malloc failed (len=%zu)", fb_player_backup_len);
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fb_orig_yoffset = -1;
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fb_player_backup_len = 0;
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return;
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}
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memcpy(fb_player_backup, fb_mem + (size_t)fb_active_yoffset * fb_line,
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fb_player_backup_len);
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logmsg("fb backup: player frame @ yoffset=%u (buffer %u) -> heap",
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fb_active_yoffset,
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fb_yres ? fb_active_yoffset / fb_yres : 0);
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}
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/* Pan the display to buffer0 (yoffset=0). buffer0 is what this launcher and
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* every app draw to (apps mmap one frame at offset 0 and never pan), so the
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* panel must show buffer0 for the menu and apps to be visible. */
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void fb_norm_buf0(void)
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{
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if (fb_fd < 0 || fb_yres_virtual <= fb_yres) { fb_active_yoffset = 0; return; }
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if (fb_active_yoffset == 0) return; /* already showing buffer0 */
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unsigned char v[160];
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memset(v, 0, sizeof v);
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if (ioctl(fb_fd, FBIOGET_VSCREENINFO, v) < 0) return;
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*(uint32_t *)(v + 16) = 0; /* xoffset */
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*(uint32_t *)(v + 20) = 0; /* yoffset -> buffer0 */
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ioctl(fb_fd, FBIOPAN_DISPLAY, v);
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fb_active_yoffset = 0;
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logmsg("fb pan -> buffer0 (yoffset=0)");
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}
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/* M2.8 Bug 3-residual 根因：fb_norm_buf0 在缓存 fb_active_yoffset==0 时短路提前返回、
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* 不再重发 FBIOPAN_DISPLAY。但 FBIOBLANK(4) 下电 -> FBIOBLANK(0) 上电后，LCDC 的扫描
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* 地址可能已复位到非 buffer0 / 失效位置，而缓存仍是 0 —— 于是真正的 re-pan 从未发出，
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* 唤醒后仍是黑屏/旧帧。本函数无条件重发 pan 到 buffer0（同 yoffset 的重复 pan 是硬件
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* no-op，无频闪），供唤醒/重绘路径调用，确保重画的界面一定落在被显示的缓冲。 */
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void fb_pan_buf0_force(void)
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{
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if (fb_fd < 0 || fb_yres_virtual <= fb_yres) { fb_active_yoffset = 0; return; }
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unsigned char v[160];
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memset(v, 0, sizeof v);
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if (ioctl(fb_fd, FBIOGET_VSCREENINFO, v) < 0) return; /* read current vinfo */
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*(uint32_t *)(v + 16) = 0; /* xoffset */
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*(uint32_t *)(v + 20) = 0; /* yoffset -> buffer0 */
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ioctl(fb_fd, FBIOPAN_DISPLAY, v); /* force-issue, even if cached 0 */
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fb_active_yoffset = 0;
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logmsg("fb force-pan -> buffer0 (yoffset=0)");
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}
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/* Restore the player's frame to its buffer and pan back to the original
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* yoffset. Called at menu/session end (BACK TO PLAYER / SIGTERM) so a frozen
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* player that never redraws shows its own frame again. Idempotent. */
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void fb_restore_player(void)
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{
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int restore_y = fb_orig_yoffset;
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if (fb_fd >= 0 && restore_y >= 0 && fb_player_backup) {
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memcpy(fb_mem + (size_t)restore_y * fb_line, fb_player_backup,
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fb_player_backup_len);
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unsigned char v[160];
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memset(v, 0, sizeof v);
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if (ioctl(fb_fd, FBIOGET_VSCREENINFO, v) == 0) {
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*(uint32_t *)(v + 16) = 0;
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*(uint32_t *)(v + 20) = (uint32_t)restore_y;
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if (ioctl(fb_fd, FBIOPAN_DISPLAY, v) < 0)
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logmsg("fb restore pan failed: %s", strerror(errno));
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}
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logmsg("fb restore: player frame -> yoffset=%d (buffer %d)",
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restore_y, fb_yres ? restore_y / fb_yres : 0);
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}
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if (fb_player_backup) { free(fb_player_backup); fb_player_backup = NULL; }
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fb_orig_yoffset = -1;
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fb_player_backup_len = 0;
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}
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/* 把当前显示 buffer（buffer0）逐像素压暗（半透明遮罩模拟） */
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void dim_screen(void)
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{
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for (int y = 0; y < fb_yres; y++) {
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unsigned char *row = fb + (size_t)y * fb_line;
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for (int x = 0; x < fb_xres; x++) {
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unsigned char *p = row + x * (fb_bpp / 8);
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if (fb_bpp == 16) {
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uint16_t c = *(uint16_t *)p;
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int r = (((c >> 11) & 0x1F) * 3) / 5;
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int g = (((c >> 5) & 0x3F) * 3) / 5;
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int b = ((c & 0x1F) * 3) / 5;
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*(uint16_t *)p = (uint16_t)((r << 11) | (g << 5) | b);
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}
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}
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}
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}
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/* A-0：电源菜单背景 = app 当前帧。从 fb0 buffer0（yoffset=0，app 永不 pan）读回 app
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* SIGSTOP 后的最后一帧 → back_buf，再经 dim_screen 压暗作菜单背景，替代旧的「压暗
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* launcher 应用列表底」（Bug：应用内长按电源，背景错显示成应用列表）。
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* 参考 fb_backup_player 的读回思路，但目标是 app 帧而非播放器帧（播放器帧在其自身
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* yoffset，app 帧固定 buffer0）。MeowOS 主界面（无 app 运行）时 buffer0 = launcher
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* 列表帧，读回即现有「压暗列表底」效果，无回归。 */
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void pm_capture_app_frame(void)
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{
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if (!fb_mem || !back_buf_ok || !fb) return; /* 无真实 fb / 直写模式：维持现状 */
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memcpy(fb, fb_mem, (size_t)fb_line * (size_t)fb_yres); /* fb = SDK back_buf */
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meow_dirty_full(); /* 新背景整帧呈现 */
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logmsg("pm: menu bg = app frame (fb0 buffer0)");
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}
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