supporting caanoo, line doublers, refactoring

[libpicofe.git] / gp2x / plat.c

diff --git a/gp2x/plat.c b/gp2x/plat.c
index 4ae956c..6fce7bc 100644 (file)
--- a/gp2x/plat.c
+++ b/gp2x/plat.c
@@ -12,16 +12,19 @@
 #include "../common/emu.h"
 #include "../linux/sndout_oss.h"
 
+#include <pico/pico.h>
+
 /* GP2X local */
 int default_cpu_clock;
+int gp2x_dev_id;
+int gp2x_current_bpp;
 void *gp2x_screens[4];
 
 void gp2x_video_changemode(int bpp)
 {
        gp2x_video_changemode_ll(bpp);
 
-       gp2x_memset_all_buffers(0, 0, 320*240*2);
-       gp2x_video_flip();
+       gp2x_current_bpp = bpp < 0 ? -bpp : bpp;
 }
 
 static void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len)
@@ -63,35 +66,27 @@ void gp2x_make_fb_bufferable(int yes)
 }
 
 /* common */
-char cpu_clk_name[16] = "GP2X CPU clocks";
-
 void plat_video_menu_enter(int is_rom_loaded)
 {
-       if (is_rom_loaded)
-       {
-               // darken the active framebuffer
-               memset(g_screen_ptr, 0, 320*8*2);
-               menu_darken_bg((char *)g_screen_ptr + 320*8*2, 320*224, 1);
-               memset((char *)g_screen_ptr + 320*232*2, 0, 320*8*2);
-       }
-       else
-       {
-               // should really only happen once, on startup..
-               readpng(g_screen_ptr, "skin/background.png", READPNG_BG);
+       if (gp2x_current_bpp != 16 || gp2x_dev_id == GP2X_DEV_WIZ) {
+               /* try to switch nicely avoiding glitches */
+               gp2x_video_wait_vsync();
+               memset(gp2x_screens[0], 0, 320*240*2);
+               memset(gp2x_screens[1], 0, 320*240*2);
+               gp2x_video_flip2(); // might flip to fb2/3
+               gp2x_video_flip2(); // ..so we do it again
+               // gp2x_video_wait_vsync();
        }
 
-       // copy to buffer2
-       gp2x_memcpy_buffers((1<<2), g_screen_ptr, 0, 320*240*2);
-
        // switch to 16bpp
        gp2x_video_changemode_ll(16);
        gp2x_video_RGB_setscaling(0, 320, 240);
-       gp2x_video_flip2();
 }
 
 void plat_video_menu_begin(void)
 {
        memcpy(g_screen_ptr, gp2x_screens[2], 320*240*2);
+       g_menuscreen_ptr = g_screen_ptr;
 }
 
 void plat_video_menu_end(void)
@@ -101,6 +96,39 @@ void plat_video_menu_end(void)
        gp2x_video_flip2();
 }
 
+void plat_early_init(void)
+{
+       gp2x_soc_t soc;
+       FILE *f;
+
+       soc = soc_detect();
+       switch (soc)
+       {
+       case SOCID_MMSP2:
+               default_cpu_clock = 200;
+               gp2x_dev_id = GP2X_DEV_GP2X;
+               break;
+       case SOCID_POLLUX:
+               default_cpu_clock = 533;
+               f = fopen("/dev/accel", "rb");
+               if (f) {
+                       printf("detected Caanoo\n");
+                       gp2x_dev_id = GP2X_DEV_CAANOO;
+                       fclose(f);
+               }
+               else {
+                       printf("detected Wiz\n");
+                       gp2x_dev_id = GP2X_DEV_WIZ;
+               }
+               break;
+       default:
+               printf("could not recognize SoC, running in dummy mode.\n");
+               break;
+       }
+
+       gp2x_menu_init();
+}
+
 void plat_init(void)
 {
        gp2x_soc_t soc;
@@ -110,22 +138,22 @@ void plat_init(void)
        {
        case SOCID_MMSP2:
                mmsp2_init();
-               default_cpu_clock = 200;
                break;
        case SOCID_POLLUX:
                pollux_init();
-               strcpy(cpu_clk_name, "Wiz CPU clock");
-               default_cpu_clock = 533;
                break;
        default:
-               fprintf(stderr, "could not recognize SoC, bailing out.\n");
-               exit(1);
+               dummy_init();
+               break;
        }
 
        warm_init();
 
        gp2x_memset_all_buffers(0, 0, 320*240*2);
 
+       // use buffer2 for menubg to save mem (using only buffers 0, 1 in menu)
+       g_menubg_ptr = gp2x_screens[2];
+
        // snd
        sndout_oss_init();
 }
@@ -145,9 +173,11 @@ void plat_finish(void)
        case SOCID_POLLUX:
                pollux_finish();
                break;
+       default:
+               dummy_finish();
+               break;
        }
 
-       gp2x_video_changemode(16);
        sndout_oss_exit();
 }