-#include <string.h>\r
-#include <unistd.h>\r
-#include <sys/mman.h>\r
-#include <sys/types.h>\r
-#include <sys/stat.h>\r
-#include <sys/ioctl.h>\r
-#include <sys/soundcard.h>\r
-#include <fcntl.h>\r
-#include <errno.h>\r
-\r
-#include "../gp2x/gp2x.h"\r
-#include "../gp2x/usbjoy.h"\r
-#include "../common/arm_utils.h"\r
-\r
-volatile unsigned short *gp2x_memregs;\r
-//static\r
-volatile unsigned long *gp2x_memregl;\r
-static void *gp2x_screens[4];\r
-static int screensel = 0;\r
-//static\r
-int memdev = 0;\r
-static int sounddev = -1, mixerdev = -1, touchdev = -1;\r
-static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 };\r
-\r
-void *gp2x_screen;\r
-\r
-#define FRAMEBUFF_WHOLESIZE (0x30000*4) // 320*240*2 + some more\r
-#define FRAMEBUFF_ADDR0 (0x4000000-FRAMEBUFF_WHOLESIZE)\r
-#define FRAMEBUFF_ADDR1 (FRAMEBUFF_ADDR0+0x30000)\r
-#define FRAMEBUFF_ADDR2 (FRAMEBUFF_ADDR1+0x30000)\r
-#define FRAMEBUFF_ADDR3 (FRAMEBUFF_ADDR2+0x30000)\r
-\r
-static const int gp2x_screenaddrs[4] = { FRAMEBUFF_ADDR0, FRAMEBUFF_ADDR1, FRAMEBUFF_ADDR2, FRAMEBUFF_ADDR3 };\r
-static int gp2x_screenaddrs_use[4];\r
-static unsigned short gp2x_screenaddr_old[4];\r
-\r
-\r
-/* video stuff */\r
-void gp2x_video_flip(void)\r
-{\r
- unsigned short lsw = (unsigned short) gp2x_screenaddrs_use[screensel&3];\r
- unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&3] >> 16);\r
-\r
- gp2x_memregs[0x2910>>1] = msw;\r
- gp2x_memregs[0x2914>>1] = msw;\r
- gp2x_memregs[0x290E>>1] = lsw;\r
- gp2x_memregs[0x2912>>1] = lsw;\r
-\r
- // jump to other buffer:\r
- gp2x_screen = gp2x_screens[++screensel&3];\r
-}\r
-\r
-/* doulblebuffered flip */\r
-void gp2x_video_flip2(void)\r
-{\r
- unsigned short msw = (unsigned short)(gp2x_screenaddrs_use[screensel&1] >> 16);\r
-\r
- gp2x_memregs[0x2910>>1] = msw;\r
- gp2x_memregs[0x2914>>1] = msw;\r
- gp2x_memregs[0x290E>>1] = 0;\r
- gp2x_memregs[0x2912>>1] = 0;\r
-\r
- // jump to other buffer:\r
- gp2x_screen = gp2x_screens[++screensel&1];\r
-}\r
-\r
-\r
-void gp2x_video_changemode2(int bpp)\r
-{\r
- gp2x_memregs[0x28DA>>1]=(((bpp+1)/8)<<9)|0xAB; /*8/15/16/24bpp...*/\r
- gp2x_memregs[0x290C>>1]=320*((bpp+1)/8); /*line width in bytes*/\r
-}\r
-\r
-\r
-void gp2x_video_changemode(int bpp)\r
-{\r
- gp2x_video_changemode2(bpp);\r
-\r
- gp2x_memset_all_buffers(0, 0, 320*240*2);\r
- gp2x_video_flip();\r
-}\r
-\r
-\r
-void gp2x_video_setpalette(int *pal, int len)\r
-{\r
- unsigned short *g=(unsigned short *)pal;\r
- volatile unsigned short *memreg = &gp2x_memregs[0x295A>>1];\r
- gp2x_memregs[0x2958>>1] = 0;\r
-\r
- len *= 2;\r
- while(len--) *memreg=*g++;\r
-}\r
-\r
-\r
-// TV Compatible function //\r
-void gp2x_video_RGB_setscaling(int ln_offs, int W, int H)\r
-{\r
- float escalaw, escalah;\r
- int bpp = (gp2x_memregs[0x28DA>>1]>>9)&0x3;\r
- unsigned short scalw;\r
-\r
- // set offset\r
- gp2x_screenaddrs_use[0] = gp2x_screenaddrs[0] + ln_offs * 320 * bpp;\r
- gp2x_screenaddrs_use[1] = gp2x_screenaddrs[1] + ln_offs * 320 * bpp;\r
- gp2x_screenaddrs_use[2] = gp2x_screenaddrs[2] + ln_offs * 320 * bpp;\r
- gp2x_screenaddrs_use[3] = gp2x_screenaddrs[3] + ln_offs * 320 * bpp;\r
-\r
- escalaw = 1024.0; // RGB Horiz LCD\r
- escalah = 320.0; // RGB Vert LCD\r
-\r
- if(gp2x_memregs[0x2800>>1]&0x100) //TV-Out\r
- {\r
- escalaw=489.0; // RGB Horiz TV (PAL, NTSC)\r
- if (gp2x_memregs[0x2818>>1] == 287) //PAL\r
- escalah=274.0; // RGB Vert TV PAL\r
- else if (gp2x_memregs[0x2818>>1] == 239) //NTSC\r
- escalah=331.0; // RGB Vert TV NTSC\r
- }\r
-\r
- // scale horizontal\r
- scalw = (unsigned short)((float)escalaw *(W/320.0));\r
- /* if there is no horizontal scaling, vertical doesn't work. Here is a nasty wrokaround... */\r
- if (H != 240 && W == 320) scalw--;\r
- gp2x_memregs[0x2906>>1]=scalw;\r
- // scale vertical\r
- gp2x_memregl[0x2908>>2]=(unsigned long)((float)escalah *bpp *(H/240.0));\r
-}\r
-\r
-\r
-void gp2x_video_wait_vsync(void)\r
-{\r
- unsigned short v = gp2x_memregs[0x1182>>1];\r
- while (!((v ^ gp2x_memregs[0x1182>>1]) & 0x10)) spend_cycles(1024);\r
-}\r
-\r
-\r
-void gp2x_video_flush_cache(void)\r
-{\r
- // since we are using the mmu hack, we must flush the cache first\r
- // (the params are most likely wrong, but they seem to work somehow)\r
- //flushcache(addr, addr + 320*240*2, 0);\r
- flushcache(gp2x_screen, (char *)gp2x_screen + 320*240*2, 0);\r
-}\r
-\r
-\r
-void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len)\r
-{\r
- char *dst;\r
- if (buffers & (1<<0)) { dst = (char *)gp2x_screens[0] + offset; if (dst != data) memcpy(dst, data, len); }\r
- if (buffers & (1<<1)) { dst = (char *)gp2x_screens[1] + offset; if (dst != data) memcpy(dst, data, len); }\r
- if (buffers & (1<<2)) { dst = (char *)gp2x_screens[2] + offset; if (dst != data) memcpy(dst, data, len); }\r
- if (buffers & (1<<3)) { dst = (char *)gp2x_screens[3] + offset; if (dst != data) memcpy(dst, data, len); }\r
-}\r
-\r
-\r
-void gp2x_memcpy_all_buffers(void *data, int offset, int len)\r
-{\r
- gp2x_memcpy_buffers(0xf, data, offset, len);\r
-}\r