libretro: set cycle_multiplier

[pcsx_rearmed.git] / frontend / libretro.c

diff --git a/frontend/libretro.c b/frontend/libretro.c
index 180c1d7..3431685 100644 (file)
--- a/frontend/libretro.c
+++ b/frontend/libretro.c
@@ -41,6 +41,39 @@ int in_a1[2] = { 127, 127 }, in_a2[2] = { 127, 127 };
 int in_keystate;
 int in_enable_vibration;
 
+static void init_memcard(char *mcd_data)
+{
+       unsigned off = 0;
+       unsigned i;
+
+       memset(mcd_data, 0, MCD_SIZE);
+
+       mcd_data[off++] = 'M';
+       mcd_data[off++] = 'C';
+       off += 0x7d;
+       mcd_data[off++] = 0x0e;
+
+       for (i = 0; i < 15; i++) {
+               mcd_data[off++] = 0xa0;
+               off += 0x07;
+               mcd_data[off++] = 0xff;
+               mcd_data[off++] = 0xff;
+               off += 0x75;
+               mcd_data[off++] = 0xa0;
+       }
+
+       for (i = 0; i < 20; i++) {
+               mcd_data[off++] = 0xff;
+               mcd_data[off++] = 0xff;
+               mcd_data[off++] = 0xff;
+               mcd_data[off++] = 0xff;
+               off += 0x04;
+               mcd_data[off++] = 0xff;
+               mcd_data[off++] = 0xff;
+               off += 0x76;
+       }
+}
+
 static int vout_open(void)
 {
        return 0;
@@ -50,7 +83,7 @@ static void vout_set_mode(int w, int h, int raw_w, int raw_h, int bpp)
 {
 }
 
-#ifdef FRONTEND_SUPPORTS_RGB565
+#ifndef FRONTEND_SUPPORTS_RGB565
 static void convert(void *buf, size_t bytes)
 {
        unsigned int i, v, *p = buf;
@@ -64,6 +97,7 @@ static void convert(void *buf, size_t bytes)
 
 static unsigned game_width;
 static unsigned game_height;
+static unsigned game_fb_dirty;
 
 static void vout_flip(const void *vram, int stride, int bgr24, int w, int h)
 {
@@ -95,10 +129,11 @@ static void vout_flip(const void *vram, int stride, int bgr24, int w, int h)
 
 out:
 #ifndef FRONTEND_SUPPORTS_RGB565
-   convert(vout_buf, w * h * 2);
+       convert(vout_buf, w * h * 2);
 #endif
-   game_width = w;
-   game_height = h;
+       game_width = w;
+       game_height = h;
+       game_fb_dirty = 1;
        pl_rearmed_cbs.flip_cnt++;
 }
 
@@ -246,7 +281,7 @@ bool retro_load_game(const struct retro_game_info *info)
 #ifdef FRONTEND_SUPPORTS_RGB565
        enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
        if (environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
-               fprintf(stderr, "RGB565 supported, using it\n");
+               SysPrintf("RGB565 supported, using it\n");
        }
 #endif
 
@@ -259,7 +294,7 @@ bool retro_load_game(const struct retro_game_info *info)
 
        /* have to reload after set_cd_image for correct cdr plugin */
        if (LoadPlugins() == -1) {
-               printf("faled to load plugins\n");
+               SysPrintf("failed to load plugins\n");
                return false;
        }
 
@@ -267,7 +302,7 @@ bool retro_load_game(const struct retro_game_info *info)
        NetOpened = 0;
 
        if (OpenPlugins() == -1) {
-               printf("faled to open plugins\n");
+               SysPrintf("failed to open plugins\n");
                return false;
        }
 
@@ -275,14 +310,14 @@ bool retro_load_game(const struct retro_game_info *info)
 
        Config.PsxAuto = 1;
        if (CheckCdrom() == -1) {
-               printf("unsupported/invalid CD image: %s\n", info->path);
+               SysPrintf("unsupported/invalid CD image: %s\n", info->path);
                return false;
        }
 
        SysReset();
 
        if (LoadCdrom() == -1) {
-               printf("could not load CD-ROM!\n");
+               SysPrintf("could not load CD-ROM!\n");
                return false;
        }
        emu_on_new_cd(0);
@@ -357,7 +392,9 @@ void retro_run(void)
        psxCpu->Execute();
 
        samples_to_send += 44100 / 60;
-       video_cb(vout_buf, game_width, game_height, game_width * 2);
+
+       video_cb(game_fb_dirty ? vout_buf : NULL, game_width, game_height, game_width * 2);
+       game_fb_dirty = 0;
 }
 
 void retro_init(void)
@@ -371,7 +408,7 @@ void retro_init(void)
        ret = emu_core_preinit();
        ret |= emu_core_init();
        if (ret != 0) {
-               printf("PCSX init failed, sorry\n");
+               SysPrintf("PCSX init failed.\n");
                exit(1);
        }
 
@@ -391,17 +428,27 @@ void retro_init(void)
                }
        }
        if (f != NULL) {
-               printf("found BIOS file: %s\n", Config.Bios);
+               SysPrintf("found BIOS file: %s\n", Config.Bios);
                fclose(f);
        }
        else
-               printf("no BIOS files found.\n");
+               SysPrintf("no BIOS files found.\n");
 
        level = 1;
        environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
 
+       /* Set how much slower PSX CPU runs * 100 (so that 200 is 2 times)
+        * we have to do this because cache misses and some IO penalties
+        * are not emulated. Warning: changing this may break compatibility. */
+#ifdef __ARM_ARCH_7A__
+       cycle_multiplier = 175;
+#else
+       cycle_multiplier = 200;
+#endif
+
        McdDisable[0] = 0;
        McdDisable[1] = 1;
+       init_memcard(Mcd1Data);
 }
 
 void retro_deinit(void)