1 // (c) Copyright 2006-2009 notaz, All rights reserved.
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2 // Free for non-commercial use.
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4 // For commercial use, separate licencing terms must be obtained.
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8 #include <sys/types.h>
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9 #include <sys/stat.h>
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11 #include <sys/ioctl.h>
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13 #include <linux/fb.h>
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14 #include <linux/omapfb.h>
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16 #include "../common/emu.h"
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17 #include "../common/menu.h"
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18 #include "../common/plat.h"
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19 #include "../common/arm_utils.h"
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20 #include "../common/input.h"
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21 #include "../linux/sndout_oss.h"
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22 #include "../linux/fbdev.h"
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24 #include "asm_utils.h"
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25 #include "version.h"
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27 #include <pico/pico_int.h>
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29 #include <linux/input.h>
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31 static struct vout_fbdev *main_fb, *layer_fb;
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32 static int g_layer_x, g_layer_y;
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33 static int g_layer_w = 320, g_layer_h = 240;
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34 static int g_osd_fps_x, g_osd_y, doing_bg_frame;
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36 static const char pnd_script_base[] = "sudo -n /usr/pandora/scripts";
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37 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
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38 static unsigned char __attribute__((aligned(4))) fb_copy[g_screen_width * g_screen_height * 2];
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39 static void *temp_frame;
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40 unsigned char *PicoDraw2FB;
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41 const char *renderer_names[] = { NULL };
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42 const char *renderer_names32x[] = { NULL };
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44 static const char * const pandora_gpio_keys[KEY_MAX + 1] = {
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45 [0 ... KEY_MAX] = NULL,
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47 [KEY_LEFT] = "Left",
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48 [KEY_RIGHT] = "Right",
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49 [KEY_DOWN] = "Down",
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51 [KEY_PAGEDOWN] = "X",
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54 [KEY_RIGHTSHIFT]= "L",
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55 [KEY_RIGHTCTRL] = "R",
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56 [KEY_LEFTALT] = "Start",
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57 [KEY_LEFTCTRL] = "Select",
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58 [KEY_MENU] = "Pandora",
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61 static int get_cpu_clock(void)
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65 f = fopen("/proc/pandora/cpu_mhz_max", "r");
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67 fscanf(f, "%d", &ret);
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73 void pemu_prep_defconfig(void)
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75 defaultConfig.EmuOpt |= EOPT_VSYNC|EOPT_16BPP;
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76 defaultConfig.s_PicoOpt |= POPT_EN_MCD_GFX|POPT_EN_MCD_PSYNC;
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77 defaultConfig.scaling = SCALE_2x2_3x2;
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80 void pemu_validate_config(void)
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82 currentConfig.CPUclock = get_cpu_clock();
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85 static void osd_text(int x, int y, const char *text)
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87 int len = strlen(text)*8;
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91 for (h = 0; h < 8; h++) {
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93 p = (unsigned short *)g_screen_ptr + x + g_screen_width*(y + h);
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94 for (i = len; i; i--, p++)
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95 *p = (*p>>2) & 0x39e7;
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97 emu_text_out16(x, y, text);
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100 static void draw_cd_leds(void)
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103 old_reg = Pico_mcd->s68k_regs[0];
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107 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;
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108 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;
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109 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+ 4) =
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110 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+ 4) =
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111 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+ 4) = col_g;
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112 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+12) =
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113 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+12) =
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114 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+12) = col_r;
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117 unsigned int *p = (unsigned int *)((short *)g_screen_ptr + g_screen_width*2+4);
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118 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;
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119 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;
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120 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;
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121 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;
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122 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
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126 static int emuscan(unsigned int num)
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128 DrawLineDest = (unsigned short *)g_screen_ptr + num * g_screen_width;
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133 void pemu_finalize_frame(const char *fps, const char *notice)
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135 if (notice && notice[0])
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136 osd_text(2, g_osd_y, notice);
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137 if (fps && fps[0] && (currentConfig.EmuOpt & EOPT_SHOW_FPS))
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138 osd_text(g_osd_fps_x, g_osd_y, fps);
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139 if ((PicoAHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))
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143 void plat_video_flip(void)
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145 g_screen_ptr = vout_fbdev_flip(layer_fb);
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148 void plat_video_toggle_renderer(int change, int is_menu)
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152 void plat_video_menu_enter(int is_rom_loaded)
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156 void plat_video_menu_begin(void)
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160 void plat_video_menu_end(void)
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162 g_menuscreen_ptr = vout_fbdev_flip(main_fb);
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165 void plat_video_wait_vsync(void)
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167 vout_fbdev_wait_vsync(main_fb);
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170 void plat_status_msg_clear(void)
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172 vout_fbdev_clear_lines(layer_fb, g_osd_y, 8);
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175 void plat_status_msg_busy_next(const char *msg)
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177 plat_status_msg_clear();
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178 pemu_finalize_frame("", msg);
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180 emu_status_msg("");
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184 void plat_status_msg_busy_first(const char *msg)
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186 plat_status_msg_busy_next(msg);
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189 void plat_update_volume(int has_changed, int is_up)
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191 static int prev_frame = 0, wait_frames = 0;
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192 int vol = currentConfig.volume;
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197 if (vol < 99) vol++;
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199 if (vol > 0) vol--;
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202 sndout_oss_setvol(vol, vol);
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203 currentConfig.volume = vol;
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204 emu_status_msg("VOL: %02i", vol);
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205 prev_frame = Pico.m.frame_count;
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209 static void make_bg(int no_scale)
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211 unsigned short *s = (void *)fb_copy;
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214 memset32(g_menubg_src_ptr, 0, g_menuscreen_w * g_menuscreen_h * 2 / 4);
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216 if (!no_scale && g_menuscreen_w >= 640 && g_menuscreen_h >= 480) {
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217 unsigned int t, *d = g_menubg_src_ptr;
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218 d += (g_menuscreen_h / 2 - 480 / 2) * g_menuscreen_w / 2;
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219 d += (g_menuscreen_w / 2 - 640 / 2) / 2;
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220 for (y = 0; y < 240; y++, s += 320, d += g_menuscreen_w*2/2) {
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221 for (x = 0; x < 320; x++) {
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224 d[x] = d[x + g_menuscreen_w / 2] = t;
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230 if (g_menuscreen_w >= 320 && g_menuscreen_h >= 240) {
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231 unsigned short *d = g_menubg_src_ptr;
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232 d += (g_menuscreen_h / 2 - 240 / 2) * g_menuscreen_w;
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233 d += (g_menuscreen_w / 2 - 320 / 2);
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234 for (y = 0; y < 240; y++, s += 320, d += g_menuscreen_w)
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235 memcpy(d, s, 320*2);
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240 void pemu_forced_frame(int no_scale, int do_emu)
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242 doing_bg_frame = 1;
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243 emu_cmn_forced_frame(no_scale, do_emu);
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244 doing_bg_frame = 0;
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246 // making a copy because enabling the layer clears it's mem
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247 memcpy32((void *)fb_copy, g_screen_ptr, sizeof(fb_copy) / 4);
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251 static void oss_write_nonblocking(int len)
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253 // sndout_oss_can_write() is not reliable, only use with no_frmlimit
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254 if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))
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257 sndout_oss_write_nb(PsndOut, len);
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260 void pemu_sound_start(void)
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264 if (currentConfig.EmuOpt & EOPT_EN_SOUND)
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266 int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;
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268 PsndRerate(Pico.m.frame_count ? 1 : 0);
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271 * for 44k stereo, we do 1470 samples/emu_frame
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272 * OMAP driver does power of 2 buffers, so we need at least 4K buffer.
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273 * The most we can lag is 1K samples, size of OMAP's McBSP FIFO,
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274 * with 2K sample buffer we might sometimes lag more than that,
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275 * thus causing underflows.
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277 printf("starting audio: %i len: %i stereo: %i, pal: %i\n",
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278 PsndRate, PsndLen, is_stereo, Pico.m.pal);
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279 sndout_oss_start(PsndRate, is_stereo, 2);
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280 //sndout_oss_setvol(currentConfig.volume, currentConfig.volume);
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281 PicoWriteSound = oss_write_nonblocking;
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282 plat_update_volume(0, 0);
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283 memset(sndBuffer, 0, sizeof(sndBuffer));
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284 PsndOut = sndBuffer;
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288 void pemu_sound_stop(void)
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293 void pemu_sound_wait(void)
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295 // don't need to do anything, writes will block by themselves
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298 void plat_debug_cat(char *str)
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302 static int pnd_setup_layer_(int fd, int enabled, int x, int y, int w, int h)
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304 struct omapfb_plane_info pi;
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305 struct omapfb_mem_info mi;
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308 ret = ioctl(fd, OMAPFB_QUERY_PLANE, &pi);
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310 perror("QUERY_PLANE");
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314 ret = ioctl(fd, OMAPFB_QUERY_MEM, &mi);
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316 perror("QUERY_MEM");
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320 /* must disable when changing stuff */
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323 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
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325 perror("SETUP_PLANE");
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328 mi.size = 320*240*2*4;
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329 ret = ioctl(fd, OMAPFB_SETUP_MEM, &mi);
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331 perror("SETUP_MEM");
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339 pi.enabled = enabled;
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341 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
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343 perror("SETUP_PLANE");
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350 int pnd_setup_layer(int enabled, int x, int y, int w, int h)
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352 return pnd_setup_layer_(vout_fbdev_get_fd(layer_fb), enabled, x, y, w, h);
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355 void pnd_restore_layer_data(void)
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357 short *t = (short *)fb_copy + 320*240 / 2 + 160;
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359 // right now this is used by menu, which wants to preview something
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360 // so try to get something on the layer.
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361 if ((t[0] | t[5] | t[13]) == 0)
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362 memset32((void *)fb_copy, 0x07000700, sizeof(fb_copy) / 4);
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364 memcpy32(g_screen_ptr, (void *)fb_copy, 320*240*2 / 4);
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368 static void apply_filter(int which)
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373 if (pnd_filter_list == NULL)
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376 for (i = 0; i < which; i++)
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377 if (pnd_filter_list[i] == NULL)
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380 if (pnd_filter_list[i] == NULL)
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383 snprintf(buf, sizeof(buf), "%s/op_videofir.sh %s", pnd_script_base, pnd_filter_list[i]);
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387 void emu_video_mode_change(int start_line, int line_count, int is_32cols)
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389 int fb_w = 320, fb_h = 240, fb_left = 0, fb_right = 0, fb_top = 0, fb_bottom = 0;
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391 if (doing_bg_frame)
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394 PicoDrawSetOutFormat(PDF_RGB555, 1);
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395 PicoDrawSetCallbacks(emuscan, NULL);
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399 fb_left = fb_right = 32;
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402 switch (currentConfig.scaling) {
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407 case SCALE_2x2_3x2:
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408 g_layer_w = fb_w * (is_32cols ? 3 : 2);
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409 g_layer_h = fb_h * 2;
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411 case SCALE_2x2_2x2:
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412 g_layer_w = fb_w * 2;
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413 g_layer_h = fb_h * 2;
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415 case SCALE_FULLSCREEN:
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420 g_layer_x = g_layer_cx;
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421 g_layer_y = g_layer_cy;
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422 g_layer_w = g_layer_cw;
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423 g_layer_h = g_layer_ch;
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427 if (currentConfig.scaling != SCALE_CUSTOM) {
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428 // center the layer
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429 g_layer_x = 800 / 2 - g_layer_w / 2;
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430 g_layer_y = 480 / 2 - g_layer_h / 2;
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433 switch (currentConfig.scaling) {
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434 case SCALE_FULLSCREEN:
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436 fb_top = start_line;
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440 g_osd_fps_x = is_32cols ? 232 : 264;
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441 g_osd_y = fb_top + fb_h - 8;
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443 pnd_setup_layer(1, g_layer_x, g_layer_y, g_layer_w, g_layer_h);
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444 vout_fbdev_resize(layer_fb, fb_w, fb_h, fb_left, fb_right, fb_top, fb_bottom, 0);
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445 vout_fbdev_clear(layer_fb);
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449 void pemu_loop_prep(void)
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451 static int pal_old = -1;
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452 static int filter_old = -1;
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455 if (currentConfig.CPUclock != get_cpu_clock()) {
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456 snprintf(buf, sizeof(buf), "unset DISPLAY; echo y | %s/op_cpuspeed.sh %d",
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457 pnd_script_base, currentConfig.CPUclock);
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461 if (Pico.m.pal != pal_old) {
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462 snprintf(buf, sizeof(buf), "%s/op_lcdrate.sh %d",
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463 pnd_script_base, Pico.m.pal ? 50 : 60);
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465 pal_old = Pico.m.pal;
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468 if (currentConfig.filter != filter_old) {
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469 apply_filter(currentConfig.filter);
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470 filter_old = currentConfig.filter;
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473 // make sure there is no junk left behind the layer
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474 memset32(g_menuscreen_ptr, 0, g_menuscreen_w * g_menuscreen_h * 2 / 4);
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475 g_menuscreen_ptr = vout_fbdev_flip(main_fb);
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477 // emu_video_mode_change will call pnd_setup_layer()
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479 // dirty buffers better go now than during gameplay
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483 pemu_sound_start();
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486 void pemu_loop_end(void)
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490 /* do one more frame for menu bg */
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491 pemu_forced_frame(0, 1);
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493 pnd_setup_layer(0, g_layer_x, g_layer_y, g_layer_w, g_layer_h);
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496 void plat_wait_till_us(unsigned int us_to)
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501 now = plat_get_ticks_us();
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503 // XXX: need to check NOHZ
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504 diff = (signed int)(us_to - now);
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505 if (diff > 10000) {
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506 //printf("sleep %d\n", us_to - now);
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507 usleep(diff * 15 / 16);
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508 now = plat_get_ticks_us();
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509 //printf(" wake %d\n", (signed)(us_to - now));
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512 while ((signed int)(us_to - now) > 512) {
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513 spend_cycles(1024);
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514 now = plat_get_ticks_us();
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519 const char *plat_get_credits(void)
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521 return "PicoDrive v" VERSION " (c) notaz, 2006-2010\n\n\n"
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523 "fDave: Cyclone 68000 core,\n"
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524 " base code of PicoDrive\n"
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525 "Reesy & FluBBa: DrZ80 core\n"
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526 "MAME devs: YM2612 and SN76496 cores\n"
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527 "Pandora team: Pandora\n"
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528 "Inder, ketchupgun: graphics\n"
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530 "special thanks (for docs, ideas):\n"
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531 " Charles MacDonald, Haze,\n"
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532 " Stephane Dallongeville,\n"
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533 " Lordus, Exophase, Rokas,\n"
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534 " Nemesis, Tasco Deluxe";
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537 #include "../linux/oshide.h"
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539 void plat_early_init(void)
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543 void plat_init(void)
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545 const char *main_fb_name, *layer_fb_name;
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548 main_fb_name = getenv("FBDEV_MAIN");
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549 if (main_fb_name == NULL)
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550 main_fb_name = "/dev/fb0";
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552 layer_fb_name = getenv("FBDEV_LAYER");
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553 if (layer_fb_name == NULL)
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554 layer_fb_name = "/dev/fb1";
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556 // must set the layer up first to be able to use it
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557 fd = open(layer_fb_name, O_RDWR);
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559 fprintf(stderr, "%s: ", layer_fb_name);
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564 ret = pnd_setup_layer_(fd, 0, g_layer_x, g_layer_y, g_layer_w, g_layer_h);
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567 fprintf(stderr, "failed to set up layer, exiting.\n");
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574 main_fb = vout_fbdev_init(main_fb_name, &w, &h, 0);
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575 if (main_fb == NULL) {
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576 fprintf(stderr, "couldn't init fb: %s\n", main_fb_name);
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580 g_menuscreen_w = w;
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581 g_menuscreen_h = h;
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582 g_menuscreen_ptr = vout_fbdev_flip(main_fb);
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585 layer_fb = vout_fbdev_init(layer_fb_name, &w, &h, 0);
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586 if (layer_fb == NULL) {
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587 fprintf(stderr, "couldn't init fb: %s\n", layer_fb_name);
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591 if (w != g_screen_width || h != g_screen_height) {
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592 fprintf(stderr, "%dx%d not supported on %s\n", w, h, layer_fb_name);
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595 g_screen_ptr = vout_fbdev_flip(layer_fb);
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597 temp_frame = calloc(g_menuscreen_w * g_menuscreen_h * 2, 1);
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598 if (temp_frame == NULL) {
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599 fprintf(stderr, "OOM\n");
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602 g_menubg_ptr = temp_frame;
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603 g_menubg_src_ptr = temp_frame;
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604 PicoDraw2FB = temp_frame;
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609 in_set_config(in_name_to_id("evdev:gpio-keys"), IN_CFG_KEY_NAMES,
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610 pandora_gpio_keys, sizeof(pandora_gpio_keys));
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614 vout_fbdev_finish(layer_fb);
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616 vout_fbdev_finish(main_fb);
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620 void plat_finish(void)
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623 vout_fbdev_finish(main_fb);
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626 printf("all done\n");
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