/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" #include #include #include #include #include #include #include #include #include #include #include #include "SDL_video.h" #include "SDL_mouse.h" #include "../SDL_sysvideo.h" #include "../SDL_pixels_c.h" #include "../../events/SDL_events_c.h" #include "SDL_sysevents.h" #include "SDL_ipodvideo.h" #define _THIS SDL_VideoDevice *this static int iPod_VideoInit (_THIS, SDL_PixelFormat *vformat); static SDL_Rect **iPod_ListModes (_THIS, SDL_PixelFormat *format, Uint32 flags); static SDL_Surface *iPod_SetVideoMode (_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); static int iPod_SetColors (_THIS, int firstcolor, int ncolors, SDL_Color *colors); static void iPod_UpdateRects (_THIS, int nrects, SDL_Rect *rects); static void iPod_VideoQuit (_THIS); static void iPod_PumpEvents (_THIS); static long iPod_GetGeneration(); static int initd = 0; static int kbfd = -1; static int fbfd = -1; static int oldvt = -1; static int curvt = -1; static int old_kbmode = -1; static long generation = 0; static struct termios old_termios, cur_termios; FILE *dbgout; #define LCD_DATA 0x10 #define LCD_CMD 0x08 #define IPOD_OLD_LCD_BASE 0xc0001000 #define IPOD_OLD_LCD_RTC 0xcf001110 #define IPOD_NEW_LCD_BASE 0x70003000 #define IPOD_NEW_LCD_RTC 0x60005010 static unsigned long lcd_base, lcd_rtc, lcd_width, lcd_height; static long iPod_GetGeneration() { int i; char cpuinfo[256]; char *ptr; FILE *file; if ((file = fopen("/proc/cpuinfo", "r")) != NULL) { while (fgets(cpuinfo, sizeof(cpuinfo), file) != NULL) if (SDL_strncmp(cpuinfo, "Revision", 8) == 0) break; fclose(file); } for (i = 0; !isspace(cpuinfo[i]); i++); for (; isspace(cpuinfo[i]); i++); ptr = cpuinfo + i + 2; return SDL_strtol(ptr, NULL, 10); } static int iPod_Available() { return 1; } static void iPod_DeleteDevice (SDL_VideoDevice *device) { free (device->hidden); free (device); } void iPod_InitOSKeymap (_THIS) {} static SDL_VideoDevice *iPod_CreateDevice (int devindex) { SDL_VideoDevice *this; this = (SDL_VideoDevice *)SDL_malloc (sizeof(SDL_VideoDevice)); if (this) { memset (this, 0, sizeof *this); this->hidden = (struct SDL_PrivateVideoData *) SDL_malloc (sizeof(struct SDL_PrivateVideoData)); } if (!this || !this->hidden) { SDL_OutOfMemory(); if (this) SDL_free (this); return 0; } memset (this->hidden, 0, sizeof(struct SDL_PrivateVideoData)); generation = iPod_GetGeneration(); this->VideoInit = iPod_VideoInit; this->ListModes = iPod_ListModes; this->SetVideoMode = iPod_SetVideoMode; this->SetColors = iPod_SetColors; this->UpdateRects = iPod_UpdateRects; this->VideoQuit = iPod_VideoQuit; this->AllocHWSurface = 0; this->CheckHWBlit = 0; this->FillHWRect = 0; this->SetHWColorKey = 0; this->SetHWAlpha = 0; this->LockHWSurface = 0; this->UnlockHWSurface = 0; this->FlipHWSurface = 0; this->FreeHWSurface = 0; this->SetCaption = 0; this->SetIcon = 0; this->IconifyWindow = 0; this->GrabInput = 0; this->GetWMInfo = 0; this->InitOSKeymap = iPod_InitOSKeymap; this->PumpEvents = iPod_PumpEvents; this->free = iPod_DeleteDevice; return this; } VideoBootStrap iPod_bootstrap = { "ipod", "iPod Framebuffer Driver", iPod_Available, iPod_CreateDevice }; //--// static int iPod_VideoInit (_THIS, SDL_PixelFormat *vformat) { if (!initd) { /*** Code adapted/copied from SDL fbcon driver. ***/ static const char * const tty0[] = { "/dev/tty0", "/dev/vc/0", 0 }; static const char * const vcs[] = { "/dev/vc/%d", "/dev/tty%d", 0 }; int i, tty0_fd; dbgout = fdopen (open ("/etc/sdlpod.log", O_WRONLY | O_SYNC | O_APPEND), "a"); if (dbgout) { setbuf (dbgout, 0); fprintf (dbgout, "--> Started SDL <--\n"); } // Try to query for a free VT tty0_fd = -1; for ( i=0; tty0[i] && (tty0_fd < 0); ++i ) { tty0_fd = open(tty0[i], O_WRONLY, 0); } if ( tty0_fd < 0 ) { tty0_fd = dup(0); /* Maybe stdin is a VT? */ } ioctl(tty0_fd, VT_OPENQRY, &curvt); close(tty0_fd); tty0_fd = open("/dev/tty", O_RDWR, 0); if ( tty0_fd >= 0 ) { ioctl(tty0_fd, TIOCNOTTY, 0); close(tty0_fd); } if ( (geteuid() == 0) && (curvt > 0) ) { for ( i=0; vcs[i] && (kbfd < 0); ++i ) { char vtpath[12]; SDL_snprintf(vtpath, SDL_arraysize(vtpath), vcs[i], curvt); kbfd = open(vtpath, O_RDWR); } } if ( kbfd < 0 ) { if (dbgout) fprintf (dbgout, "Couldn't open any VC\n"); return -1; } if (dbgout) fprintf (stderr, "Current VT: %d\n", curvt); if (kbfd >= 0) { /* Switch to the correct virtual terminal */ if ( curvt > 0 ) { struct vt_stat vtstate; if ( ioctl(kbfd, VT_GETSTATE, &vtstate) == 0 ) { oldvt = vtstate.v_active; } if ( ioctl(kbfd, VT_ACTIVATE, curvt) == 0 ) { if (dbgout) fprintf (dbgout, "Waiting for switch to this VT... "); ioctl(kbfd, VT_WAITACTIVE, curvt); if (dbgout) fprintf (dbgout, "done!\n"); } } // Set terminal input mode if (tcgetattr (kbfd, &old_termios) < 0) { if (dbgout) fprintf (dbgout, "Can't get termios\n"); return -1; } cur_termios = old_termios; // cur_termios.c_iflag &= ~(ICRNL | INPCK | ISTRIP | IXON); // cur_termios.c_iflag |= (BRKINT); // cur_termios.c_lflag &= ~(ICANON | ECHO | ISIG | IEXTEN); // cur_termios.c_oflag &= ~(OPOST); // cur_termios.c_oflag |= (ONOCR | ONLRET); cur_termios.c_lflag &= ~(ICANON | ECHO | ISIG); cur_termios.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON); cur_termios.c_cc[VMIN] = 0; cur_termios.c_cc[VTIME] = 0; if (tcsetattr (kbfd, TCSAFLUSH, &cur_termios) < 0) { if (dbgout) fprintf (dbgout, "Can't set termios\n"); return -1; } if (ioctl (kbfd, KDSKBMODE, K_MEDIUMRAW) < 0) { if (dbgout) fprintf (dbgout, "Can't set medium-raw mode\n"); return -1; } if (ioctl (kbfd, KDSETMODE, KD_GRAPHICS) < 0) { if (dbgout) fprintf (dbgout, "Can't set graphics\n"); return -1; } } // Open the framebuffer if ((fbfd = open ("/dev/fb0", O_RDWR)) < 0) { if (dbgout) fprintf (dbgout, "Can't open framebuffer\n"); return -1; } else { struct fb_var_screeninfo vinfo; if (dbgout) fprintf (dbgout, "Generation: %ld\n", generation); if (generation >= 40000) { lcd_base = IPOD_NEW_LCD_BASE; } else { lcd_base = IPOD_OLD_LCD_BASE; } ioctl (fbfd, FBIOGET_VSCREENINFO, &vinfo); close (fbfd); if (lcd_base == IPOD_OLD_LCD_BASE) lcd_rtc = IPOD_OLD_LCD_RTC; else if (lcd_base == IPOD_NEW_LCD_BASE) lcd_rtc = IPOD_NEW_LCD_RTC; else { SDL_SetError ("Unknown iPod version"); return -1; } lcd_width = vinfo.xres; lcd_height = vinfo.yres; if (dbgout) fprintf (dbgout, "LCD is %dx%d\n", lcd_width, lcd_height); } fcntl (kbfd, F_SETFL, O_RDWR | O_NONBLOCK); if ((generation >= 60000) && (generation < 70000)) { vformat->BitsPerPixel = 16; vformat->Rmask = 0xF800; vformat->Gmask = 0x07E0; vformat->Bmask = 0x001F; } else { vformat->BitsPerPixel = 8; vformat->Rmask = vformat->Gmask = vformat->Bmask = 0; } initd = 1; if (dbgout) fprintf (dbgout, "Initialized.\n\n"); } return 0; } static SDL_Rect **iPod_ListModes (_THIS, SDL_PixelFormat *format, Uint32 flags) { int width, height, fd; static SDL_Rect r; static SDL_Rect *rs[2] = { &r, 0 }; if ((fd = open ("/dev/fb0", O_RDWR)) < 0) { return 0; } else { struct fb_var_screeninfo vinfo; ioctl (fbfd, FBIOGET_VSCREENINFO, &vinfo); close (fbfd); width = vinfo.xres; height = vinfo.yres; } r.x = r.y = 0; r.w = width; r.h = height; return rs; } static SDL_Surface *iPod_SetVideoMode (_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags) { Uint32 Rmask, Gmask, Bmask; if (bpp > 8) { Rmask = 0xF800; Gmask = 0x07E0; Bmask = 0x001F; } else { Rmask = Gmask = Bmask = 0; } if (this->hidden->buffer) SDL_free (this->hidden->buffer); this->hidden->buffer = SDL_malloc (width * height * (bpp / 8)); if (!this->hidden->buffer) { SDL_SetError ("Couldn't allocate buffer for requested mode"); return 0; } memset (this->hidden->buffer, 0, width * height * (bpp / 8)); if (!SDL_ReallocFormat (current, bpp, Rmask, Gmask, Bmask, 0)) { SDL_SetError ("Couldn't allocate new pixel format"); SDL_free (this->hidden->buffer); this->hidden->buffer = 0; return 0; } if (bpp <= 8) { int i, j; for (i = 0; i < 256; i += 4) { for (j = 0; j < 4; j++) { current->format->palette->colors[i+j].r = 85 * j; current->format->palette->colors[i+j].g = 85 * j; current->format->palette->colors[i+j].b = 85 * j; } } } current->flags = flags & SDL_FULLSCREEN; this->hidden->w = current->w = width; this->hidden->h = current->h = height; current->pitch = current->w * (bpp / 8); current->pixels = this->hidden->buffer; return current; } static int iPod_SetColors (_THIS, int firstcolor, int ncolors, SDL_Color *colors) { if (SDL_VideoSurface && SDL_VideoSurface->format && SDL_VideoSurface->format->palette) { int i, j; for (i = 0; i < 256; i += 4) { for (j = 0; j < 4; j++) { SDL_VideoSurface->format->palette->colors[i+j].r = 85 * j; SDL_VideoSurface->format->palette->colors[i+j].g = 85 * j; SDL_VideoSurface->format->palette->colors[i+j].b = 85 * j; } } } return 0; } static void iPod_VideoQuit (_THIS) { ioctl (kbfd, KDSETMODE, KD_TEXT); tcsetattr (kbfd, TCSAFLUSH, &old_termios); old_kbmode = -1; if (oldvt > 0) ioctl (kbfd, VT_ACTIVATE, oldvt); if (kbfd > 0) close (kbfd); if (dbgout) { fprintf (dbgout, "<-- Ended SDL -->\n"); fclose (dbgout); } kbfd = -1; } static char iPod_SC_keymap[] = { 0, /* 0 - no key */ '[' - 0x40, /* ESC (Ctrl+[) */ '1', '2', '3', '4', '5', '6', '7', '8', '9', '-', '=', '\b', '\t', /* Backspace, Tab (Ctrl+H,Ctrl+I) */ 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n', 0, /* Enter, Left CTRL */ 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', '`', 0, '\\', /* left shift, backslash */ 'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/', 0, '*', 0, ' ', 0, /* right shift, KP mul, left alt, space, capslock */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* F1-10 */ 0, 0, /* numlock, scrollock */ '7', '8', '9', '-', '4', '5', '6', '+', '1', '2', '3', '0', '.', /* numeric keypad */ 0, 0, /* padding */ 0, 0, 0, /* "less" (?), F11, F12 */ 0, 0, 0, 0, 0, 0, 0, /* padding */ '\n', 0, '/', 0, 0, /* KP enter, Rctrl, Ctrl, KP div, PrtSc, RAlt */ 0, 0, 0, 0, 0, 0, 0, 0, 0, /* Break, Home, Up, PgUp, Left, Right, End, Down, PgDn */ 0, 0, /* Ins, Del */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* padding */ 0, 0, /* RWin, LWin */ 0 /* no key */ }; static void iPod_keyboard() { unsigned char keybuf[128]; int i, nread; SDL_keysym keysym; SDL_Event ev; keysym.mod = 0; keysym.scancode = 0xff; memset (&ev, 0, sizeof(SDL_Event)); nread = read (kbfd, keybuf, 128); for (i = 0; i < nread; i++) { char ascii = iPod_SC_keymap[keybuf[i] & 0x7f]; if (dbgout) fprintf (dbgout, "Key! %02x is %c %s", keybuf[i], ascii, (keybuf[i] & 0x80)? "up" : "down"); keysym.sym = keysym.unicode = ascii; ev.type = (keybuf[i] & 0x80)? SDL_KEYUP : SDL_KEYDOWN; ev.key.state = 0; ev.key.keysym = keysym; SDL_PushEvent (&ev); } } static void iPod_PumpEvents (_THIS) { fd_set fdset; int max_fd = 0; static struct timeval zero; int posted; do { posted = 0; FD_ZERO (&fdset); if (kbfd >= 0) { FD_SET (kbfd, &fdset); max_fd = kbfd; } if (dbgout) fprintf (dbgout, "Selecting"); if (select (max_fd + 1, &fdset, 0, 0, &zero) > 0) { if (dbgout) fprintf (dbgout, " -> match!\n"); iPod_keyboard(); posted++; } if (dbgout) fprintf (dbgout, "\n"); } while (posted); } // enough space for 160x128x2 static char ipod_scr[160 * (128/4)]; #define outl(datum,addr) (*(volatile unsigned long *)(addr) = (datum)) #define inl(addr) (*(volatile unsigned long *)(addr)) /*** The following LCD code is taken from Linux kernel uclinux-2.4.24-uc0-ipod2, file arch/armnommu/mach-ipod/fb.c. A few modifications have been made. ***/ /* get current usec counter */ static int M_timer_get_current(void) { return inl(lcd_rtc); } /* check if number of useconds has past */ static int M_timer_check(int clock_start, int usecs) { unsigned long clock; clock = inl(lcd_rtc); if ( (clock - clock_start) >= usecs ) { return 1; } else { return 0; } } /* wait for LCD with timeout */ static void M_lcd_wait_write(void) { if ( (inl(lcd_base) & 0x8000) != 0 ) { int start = M_timer_get_current(); do { if ( (inl(lcd_base) & (unsigned int)0x8000) == 0 ) break; } while ( M_timer_check(start, 1000) == 0 ); } } /* send LCD data */ static void M_lcd_send_data(int data_lo, int data_hi) { M_lcd_wait_write(); outl(data_lo, lcd_base + LCD_DATA); M_lcd_wait_write(); outl(data_hi, lcd_base + LCD_DATA); } /* send LCD command */ static void M_lcd_prepare_cmd(int cmd) { M_lcd_wait_write(); outl(0x0, lcd_base + LCD_CMD); M_lcd_wait_write(); outl(cmd, lcd_base + LCD_CMD); } /* send LCD command and data */ static void M_lcd_cmd_and_data(int cmd, int data_lo, int data_hi) { M_lcd_prepare_cmd(cmd); M_lcd_send_data(data_lo, data_hi); } // Copied from uW static void M_update_display(int sx, int sy, int mx, int my) { int y; unsigned short cursor_pos; sx >>= 3; mx >>= 3; cursor_pos = sx + (sy << 5); for ( y = sy; y <= my; y++ ) { unsigned char *img_data; int x; /* move the cursor */ M_lcd_cmd_and_data(0x11, cursor_pos >> 8, cursor_pos & 0xff); /* setup for printing */ M_lcd_prepare_cmd(0x12); img_data = ipod_scr + (sx << 1) + (y * (lcd_width/4)); /* loops up to 160 times */ for ( x = sx; x <= mx; x++ ) { /* display eight pixels */ M_lcd_send_data(*(img_data + 1), *img_data); img_data += 2; } /* update cursor pos counter */ cursor_pos += 0x20; } } /* get current usec counter */ static int C_timer_get_current(void) { return inl(0x60005010); } /* check if number of useconds has past */ static int C_timer_check(int clock_start, int usecs) { unsigned long clock; clock = inl(0x60005010); if ( (clock - clock_start) >= usecs ) { return 1; } else { return 0; } } /* wait for LCD with timeout */ static void C_lcd_wait_write(void) { if ((inl(0x70008A0C) & 0x80000000) != 0) { int start = C_timer_get_current(); do { if ((inl(0x70008A0C) & 0x80000000) == 0) break; } while (C_timer_check(start, 1000) == 0); } } static void C_lcd_cmd_data(int cmd, int data) { C_lcd_wait_write(); outl(cmd | 0x80000000, 0x70008A0C); C_lcd_wait_write(); outl(data | 0x80000000, 0x70008A0C); } static void C_update_display(int sx, int sy, int mx, int my) { int height = (my - sy) + 1; int width = (mx - sx) + 1; char *addr = SDL_VideoSurface->pixels; if (width & 1) width++; /* start X and Y */ C_lcd_cmd_data(0x12, (sy & 0xff)); C_lcd_cmd_data(0x13, (((SDL_VideoSurface->w - 1) - sx) & 0xff)); /* max X and Y */ C_lcd_cmd_data(0x15, (((sy + height) - 1) & 0xff)); C_lcd_cmd_data(0x16, (((((SDL_VideoSurface->w - 1) - sx) - width) + 1) & 0xff)); addr += sx + sy * SDL_VideoSurface->pitch; while (height > 0) { int h, x, y, pixels_to_write; pixels_to_write = (width * height) * 2; /* calculate how much we can do in one go */ h = height; if (pixels_to_write > 64000) { h = (64000/2) / width; pixels_to_write = (width * h) * 2; } outl(0x10000080, 0x70008A20); outl((pixels_to_write - 1) | 0xC0010000, 0x70008A24); outl(0x34000000, 0x70008A20); /* for each row */ for (x = 0; x < h; x++) { /* for each column */ for (y = 0; y < width; y += 2) { unsigned two_pixels; two_pixels = addr[0] | (addr[1] << 16); addr += 2; while ((inl(0x70008A20) & 0x1000000) == 0); /* output 2 pixels */ outl(two_pixels, 0x70008B00); } addr += SDL_VideoSurface->w - width; } while ((inl(0x70008A20) & 0x4000000) == 0); outl(0x0, 0x70008A24); height = height - h; } } // Should work with photo. However, I don't have one, so I'm not sure. static void iPod_UpdateRects (_THIS, int nrects, SDL_Rect *rects) { if (SDL_VideoSurface->format->BitsPerPixel == 16) { C_update_display (0, 0, lcd_width, lcd_height); } else { int i, y, x; for (i = 0; i < nrects; i++) { SDL_Rect *r = rects + i; if (!r) { continue; } for (y = r->y; (y < r->y + r->h) && y < lcd_height; y++) { for (x = r->x; (x < r->x + r->w) && x < lcd_width; x++) { ipod_scr[y*(lcd_width/4) + x/4] &= ~(3 << (2 * (x%4))); ipod_scr[y*(lcd_width/4) + x/4] |= (((Uint8*)(SDL_VideoSurface->pixels))[ y*SDL_VideoSurface->pitch + x ] & 3) << (2 * (x%4)); } } } M_update_display (0, 0, lcd_width, lcd_height); } }