X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2Fmedia.c;h=ef9b315f41a4e4cf68558bac6f2231d427d8ea1a;hb=3e9da86efec76685d7fb374003ed0e2d9bc7c5fb;hp=98384c98f1ef2ae7d8d36fda53b7e3bee92496bd;hpb=83b1fb32799d32d8bc94ffa676742c778302e85a;p=picodrive.git

diff --git a/pico/media.c b/pico/media.c
index 98384c9..ef9b315 100644
--- a/pico/media.c
+++ b/pico/media.c
@@ -14,180 +14,180 @@ unsigned char media_id_header[0x100];
 
 static void strlwr_(char *string)
 {
-	char *p;
-	for (p = string; *p; p++)
-		if ('A' <= *p && *p <= 'Z')
-			*p += 'a' - 'A';
+  char *p;
+  for (p = string; *p; p++)
+    if ('A' <= *p && *p <= 'Z')
+      *p += 'a' - 'A';
 }
 
 static void get_ext(const char *file, char *ext)
 {
-	const char *p;
+  const char *p;
 
-	p = file + strlen(file) - 4;
-	if (p < file) p = file;
-	strncpy(ext, p, 4);
-	ext[4] = 0;
-	strlwr_(ext);
+  p = file + strlen(file) - 4;
+  if (p < file) p = file;
+  strncpy(ext, p, 4);
+  ext[4] = 0;
+  strlwr_(ext);
 }
 
 static int detect_media(const char *fname)
 {
-	static const short sms_offsets[] = { 0x7ff0, 0x3ff0, 0x1ff0 };
-	static const char *sms_exts[] = { "sms", "gg", "sg" };
-	static const char *md_exts[] = { "gen", "bin", "smd" };
-	char buff0[32], buff[32];
-	unsigned short *d16;
-	pm_file *pmf;
-	char ext[5];
-	int i;
-
-	get_ext(fname, ext);
-
-	// detect wrong extensions
-	if (!strcmp(ext, ".srm") || !strcmp(ext, "s.gz") || !strcmp(ext, ".mds")) // s.gz ~ .mds.gz
-		return PM_BAD_DETECT;
-
-	/* don't believe in extensions, except .cue */
-	if (strcasecmp(ext, ".cue") == 0)
-		return PM_CD;
-
-	pmf = pm_open(fname);
-	if (pmf == NULL)
-		return PM_BAD_DETECT;
-
-	if (pm_read(buff0, 32, pmf) != 32) {
-		pm_close(pmf);
-		return PM_BAD_DETECT;
-	}
-
-	if (strncasecmp("SEGADISCSYSTEM", buff0 + 0x00, 14) == 0 ||
-	    strncasecmp("SEGADISCSYSTEM", buff0 + 0x10, 14) == 0) {
-		pm_close(pmf);
-		return PM_CD;
-	}
-
-	/* check for SMD evil */
-	if (pmf->size >= 0x4200 && (pmf->size & 0x3fff) == 0x200) {
-		if (pm_seek(pmf, sms_offsets[0] + 0x200, SEEK_SET) == sms_offsets[0] + 0x200 &&
-		    pm_read(buff, 16, pmf) == 16 &&
-		    strncmp("TMR SEGA", buff, 8) == 0)
-			goto looks_like_sms;
-
-		/* could parse further but don't bother */
-		goto extension_check;
-	}
-
-	/* MD header? Act as TMSS BIOS here */
-	if (pm_seek(pmf, 0x100, SEEK_SET) == 0x100 && pm_read(buff, 16, pmf) == 16) {
-		if (strncmp(buff, "SEGA", 4) == 0 || strncmp(buff, " SEG", 4) == 0)
-			goto looks_like_md;
-	}
-
-	for (i = 0; i < ARRAY_SIZE(sms_offsets); i++) {
-		if (pm_seek(pmf, sms_offsets[i], SEEK_SET) != sms_offsets[i])
-			continue;
-
-		if (pm_read(buff, 16, pmf) != 16)
-			continue;
-
-		if (strncmp("TMR SEGA", buff, 8) == 0)
-			goto looks_like_sms;
-	}
+  static const short sms_offsets[] = { 0x7ff0, 0x3ff0, 0x1ff0 };
+  static const char *sms_exts[] = { "sms", "gg", "sg" };
+  static const char *md_exts[] = { "gen", "bin", "smd" };
+  char buff0[32], buff[32];
+  unsigned short *d16;
+  pm_file *pmf;
+  char ext[5];
+  int i;
+
+  get_ext(fname, ext);
+
+  // detect wrong extensions
+  if (!strcmp(ext, ".srm") || !strcmp(ext, "s.gz") || !strcmp(ext, ".mds")) // s.gz ~ .mds.gz
+    return PM_BAD_DETECT;
+
+  /* don't believe in extensions, except .cue */
+  if (strcasecmp(ext, ".cue") == 0)
+    return PM_CD;
+
+  pmf = pm_open(fname);
+  if (pmf == NULL)
+    return PM_BAD_DETECT;
+
+  if (pm_read(buff0, 32, pmf) != 32) {
+    pm_close(pmf);
+    return PM_BAD_DETECT;
+  }
+
+  if (strncasecmp("SEGADISCSYSTEM", buff0 + 0x00, 14) == 0 ||
+      strncasecmp("SEGADISCSYSTEM", buff0 + 0x10, 14) == 0) {
+    pm_close(pmf);
+    return PM_CD;
+  }
+
+  /* check for SMD evil */
+  if (pmf->size >= 0x4200 && (pmf->size & 0x3fff) == 0x200) {
+    if (pm_seek(pmf, sms_offsets[0] + 0x200, SEEK_SET) == sms_offsets[0] + 0x200 &&
+        pm_read(buff, 16, pmf) == 16 &&
+        strncmp("TMR SEGA", buff, 8) == 0)
+      goto looks_like_sms;
+
+    /* could parse further but don't bother */
+    goto extension_check;
+  }
+
+  /* MD header? Act as TMSS BIOS here */
+  if (pm_seek(pmf, 0x100, SEEK_SET) == 0x100 && pm_read(buff, 16, pmf) == 16) {
+    if (strncmp(buff, "SEGA", 4) == 0 || strncmp(buff, " SEG", 4) == 0)
+      goto looks_like_md;
+  }
+
+  for (i = 0; i < ARRAY_SIZE(sms_offsets); i++) {
+    if (pm_seek(pmf, sms_offsets[i], SEEK_SET) != sms_offsets[i])
+      continue;
+
+    if (pm_read(buff, 16, pmf) != 16)
+      continue;
+
+    if (strncmp("TMR SEGA", buff, 8) == 0)
+      goto looks_like_sms;
+  }
 
 extension_check:
-	/* probably some headerless thing. Maybe check the extension after all. */
-	for (i = 0; i < ARRAY_SIZE(md_exts); i++)
-		if (strcasecmp(pmf->ext, md_exts[i]) == 0)
-			goto looks_like_md;
-
-	for (i = 0; i < ARRAY_SIZE(sms_exts); i++)
-		if (strcasecmp(pmf->ext, sms_exts[i]) == 0)
-			goto looks_like_sms;
-
-	/* If everything else fails, make a guess on the reset vector */
-	d16 = (unsigned short *)(buff0 + 4);
-	if ((((d16[0] << 16) | d16[1]) & 0xffffff) >= pmf->size) {
-		lprintf("bad MD reset vector, assuming SMS\n");
-		goto looks_like_sms;
-	}
+  /* probably some headerless thing. Maybe check the extension after all. */
+  for (i = 0; i < ARRAY_SIZE(md_exts); i++)
+    if (strcasecmp(pmf->ext, md_exts[i]) == 0)
+      goto looks_like_md;
+
+  for (i = 0; i < ARRAY_SIZE(sms_exts); i++)
+    if (strcasecmp(pmf->ext, sms_exts[i]) == 0)
+      goto looks_like_sms;
+
+  /* If everything else fails, make a guess on the reset vector */
+  d16 = (unsigned short *)(buff0 + 4);
+  if ((((d16[0] << 16) | d16[1]) & 0xffffff) >= pmf->size) {
+    lprintf("bad MD reset vector, assuming SMS\n");
+    goto looks_like_sms;
+  }
 
 looks_like_md:
-	pm_close(pmf);
-	return PM_MD_CART;
+  pm_close(pmf);
+  return PM_MD_CART;
 
 looks_like_sms:
-	pm_close(pmf);
-	return PM_MARK3;
+  pm_close(pmf);
+  return PM_MARK3;
 }
 
 /* checks if fname points to valid MegaCD image */
 int PicoCdCheck(const char *fname_in, int *pregion)
 {
-	const char *fname = fname_in;
-	unsigned char buf[32];
-	pm_file *cd_f;
-	int region = 4; // 1: Japan, 4: US, 8: Europe
-	char ext[5];
-	cue_track_type type = CT_UNKNOWN;
-	cue_data_t *cue_data = NULL;
-
-	get_ext(fname_in, ext);
-	if (strcasecmp(ext, ".cue") == 0) {
-		cue_data = cue_parse(fname_in);
-		if (cue_data != NULL) {
-			fname = cue_data->tracks[1].fname;
-			type  = cue_data->tracks[1].type;
-		}
-		else
-			return -1;
-	}
-
-	cd_f = pm_open(fname);
-	if (cue_data != NULL)
-		cue_destroy(cue_data);
-
-	if (cd_f == NULL) return 0; // let the upper level handle this
-
-	if (pm_read(buf, 32, cd_f) != 32) {
-		pm_close(cd_f);
-		return -1;
-	}
-
-	if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x00, 14)) {
-		if (type && type != CT_ISO)
-			elprintf(EL_STATUS, ".cue has wrong type: %i", type);
-		type = CT_ISO;       // Sega CD (ISO)
-	}
-	if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x10, 14)) {
-		if (type && type != CT_BIN)
-			elprintf(EL_STATUS, ".cue has wrong type: %i", type);
-		type = CT_BIN;       // Sega CD (BIN)
-	}
-
-	if (type == CT_UNKNOWN) {
-		pm_close(cd_f);
-		return 0;
-	}
-
-	pm_seek(cd_f, (type == CT_ISO) ? 0x100 : 0x110, SEEK_SET);
-	pm_read(media_id_header, sizeof(media_id_header), cd_f);
-
-	/* it seems we have a CD image here. Try to detect region now.. */
-	pm_seek(cd_f, (type == CT_ISO) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);
-	pm_read(buf, 1, cd_f);
-	pm_close(cd_f);
-
-	if (buf[0] == 0x64) region = 8; // EU
-	if (buf[0] == 0xa1) region = 1; // JAP
-
-	lprintf("detected %s Sega/Mega CD image with %s region\n",
-		type == CT_BIN ? "BIN" : "ISO", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");
-
-	if (pregion != NULL)
+  const char *fname = fname_in;
+  unsigned char buf[32];
+  pm_file *cd_f;
+  int region = 4; // 1: Japan, 4: US, 8: Europe
+  char ext[5];
+  cue_track_type type = CT_UNKNOWN;
+  cue_data_t *cue_data = NULL;
+
+  get_ext(fname_in, ext);
+  if (strcasecmp(ext, ".cue") == 0) {
+    cue_data = cue_parse(fname_in);
+    if (cue_data != NULL) {
+      fname = cue_data->tracks[1].fname;
+      type  = cue_data->tracks[1].type;
+    }
+    else
+      return -1;
+  }
+
+  cd_f = pm_open(fname);
+  if (cue_data != NULL)
+    cue_destroy(cue_data);
+
+  if (cd_f == NULL) return 0; // let the upper level handle this
+
+  if (pm_read(buf, 32, cd_f) != 32) {
+    pm_close(cd_f);
+    return -1;
+  }
+
+  if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x00, 14)) {
+    if (type && type != CT_ISO)
+      elprintf(EL_STATUS, ".cue has wrong type: %i", type);
+    type = CT_ISO;       // Sega CD (ISO)
+  }
+  if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x10, 14)) {
+    if (type && type != CT_BIN)
+      elprintf(EL_STATUS, ".cue has wrong type: %i", type);
+    type = CT_BIN;       // Sega CD (BIN)
+  }
+
+  if (type == CT_UNKNOWN) {
+    pm_close(cd_f);
+    return 0;
+  }
+
+  pm_seek(cd_f, (type == CT_ISO) ? 0x100 : 0x110, SEEK_SET);
+  pm_read(media_id_header, sizeof(media_id_header), cd_f);
+
+  /* it seems we have a CD image here. Try to detect region now.. */
+  pm_seek(cd_f, (type == CT_ISO) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);
+  pm_read(buf, 1, cd_f);
+  pm_close(cd_f);
+
+  if (buf[0] == 0x64) region = 8; // EU
+  if (buf[0] == 0xa1) region = 1; // JAP
+
+  lprintf("detected %s Sega/Mega CD image with %s region\n",
+    type == CT_BIN ? "BIN" : "ISO", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");
+
+  if (pregion != NULL)
     *pregion = region;
 
-	return type;
+  return type;
 }
 
 enum media_type_e PicoLoadMedia(const char *filename,
@@ -197,29 +197,29 @@ enum media_type_e PicoLoadMedia(const char *filename,
 {
   const char *rom_fname = filename;
   enum media_type_e media_type;
-	cd_img_type cd_img_type = CIT_NOT_CD;
-	unsigned char *rom_data = NULL;
-	unsigned int rom_size = 0;
-	pm_file *rom = NULL;
+  cd_img_type cd_img_type = CIT_NOT_CD;
+  unsigned char *rom_data = NULL;
+  unsigned int rom_size = 0;
+  pm_file *rom = NULL;
   int cd_region = 0;
   int ret;
 
-	media_type = detect_media(filename);
-	if (media_type == PM_BAD_DETECT)
-		goto out;
-
-	if ((PicoAHW & PAHW_MCD) && Pico_mcd != NULL)
-		Stop_CD();
-	PicoCartUnload();
-	PicoAHW = 0;
-
-	if (media_type == PM_CD)
-	{
-		// check for MegaCD image
-		cd_img_type = PicoCdCheck(filename, &cd_region);
-		if (cd_img_type >= 0 && cd_img_type != CIT_NOT_CD)
-		{
-			// valid CD image, ask frontend for BIOS..
+  media_type = detect_media(filename);
+  if (media_type == PM_BAD_DETECT)
+    goto out;
+
+  if ((PicoAHW & PAHW_MCD) && Pico_mcd != NULL)
+    Stop_CD();
+  PicoCartUnload();
+  PicoAHW = 0;
+
+  if (media_type == PM_CD)
+  {
+    // check for MegaCD image
+    cd_img_type = PicoCdCheck(filename, &cd_region);
+    if (cd_img_type >= 0 && cd_img_type != CIT_NOT_CD)
+    {
+      // valid CD image, ask frontend for BIOS..
       rom_fname = NULL;
       if (get_bios_filename != NULL)
         rom_fname = get_bios_filename(&cd_region, filename);
@@ -228,77 +228,77 @@ enum media_type_e PicoLoadMedia(const char *filename,
         goto out;
       }
 
-			PicoAHW |= PAHW_MCD;
-		}
-		else {
+      PicoAHW |= PAHW_MCD;
+    }
+    else {
       media_type = PM_BAD_CD;
       goto out;
-		}
-	}
-	else if (media_type == PM_MARK3) {
-		lprintf("detected SMS ROM\n");
-		PicoAHW = PAHW_SMS;
-	}
-
-	rom = pm_open(rom_fname);
-	if (rom == NULL) {
-		lprintf("Failed to open ROM");
+    }
+  }
+  else if (media_type == PM_MARK3) {
+    lprintf("detected SMS ROM\n");
+    PicoAHW = PAHW_SMS;
+  }
+
+  rom = pm_open(rom_fname);
+  if (rom == NULL) {
+    lprintf("Failed to open ROM");
     media_type = PM_ERROR;
-		goto out;
-	}
-
-	ret = PicoCartLoad(rom, &rom_data, &rom_size, (PicoAHW & PAHW_SMS) ? 1 : 0);
-	pm_close(rom);
-	if (ret != 0) {
-		if      (ret == 2) lprintf("Out of memory");
-		else if (ret == 3) lprintf("Read failed");
-		else               lprintf("PicoCartLoad() failed.");
+    goto out;
+  }
+
+  ret = PicoCartLoad(rom, &rom_data, &rom_size, (PicoAHW & PAHW_SMS) ? 1 : 0);
+  pm_close(rom);
+  if (ret != 0) {
+    if      (ret == 2) lprintf("Out of memory");
+    else if (ret == 3) lprintf("Read failed");
+    else               lprintf("PicoCartLoad() failed.");
     media_type = PM_ERROR;
-		goto out;
-	}
+    goto out;
+  }
 
-	// detect wrong files
-	if (strncmp((char *)rom_data, "Pico", 4) == 0) {
+  // detect wrong files
+  if (strncmp((char *)rom_data, "Pico", 4) == 0) {
     lprintf("savestate selected?\n");
     media_type = PM_BAD_DETECT;
-		goto out;
+    goto out;
   }
 
-	if (!(PicoAHW & PAHW_SMS)) {
-		unsigned short *d = (unsigned short *)(rom_data + 4);
-		if ((((d[0] << 16) | d[1]) & 0xffffff) >= (int)rom_size) {
-			lprintf("bad reset vector\n");
+  if (!(PicoAHW & PAHW_SMS)) {
+    unsigned short *d = (unsigned short *)(rom_data + 4);
+    if ((((d[0] << 16) | d[1]) & 0xffffff) >= (int)rom_size) {
+      lprintf("bad reset vector\n");
       media_type = PM_BAD_DETECT;
       goto out;
-		}
-	}
+    }
+  }
 
-	// load config for this ROM (do this before insert to get correct region)
-	if (!(PicoAHW & PAHW_MCD)) {
-		memcpy(media_id_header, rom_data + 0x100, sizeof(media_id_header));
+  // load config for this ROM (do this before insert to get correct region)
+  if (!(PicoAHW & PAHW_MCD)) {
+    memcpy(media_id_header, rom_data + 0x100, sizeof(media_id_header));
     if (do_region_override != NULL)
       do_region_override(filename);
   }
 
-	if (PicoCartInsert(rom_data, rom_size, carthw_cfg_fname)) {
+  if (PicoCartInsert(rom_data, rom_size, carthw_cfg_fname)) {
     media_type = PM_ERROR;
-		goto out;
-	}
+    goto out;
+  }
   rom_data = NULL; // now belongs to PicoCart
 
-	// insert CD if it was detected
-	if (cd_img_type != CIT_NOT_CD) {
-		ret = Insert_CD(filename, cd_img_type);
-		if (ret != 0) {
-			PicoCartUnload();
+  // insert CD if it was detected
+  if (cd_img_type != CIT_NOT_CD) {
+    ret = Insert_CD(filename, cd_img_type);
+    if (ret != 0) {
+      PicoCartUnload();
       media_type = PM_BAD_CD;
-			goto out;
-		}
-	}
+      goto out;
+    }
+  }
 
 out:
-	if (rom_data)
-		free(rom_data);
+  if (rom_data)
+    free(rom_data);
   return media_type;
 }