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.cue support, Pico stubs

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@433 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-05-01 11:27:50 +00:00
parent 1ceda4176f
commit 9fe01b9693
4 changed files with 37 additions and 13 deletions
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40
common/emu.c
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@ -18,6 +18,7 @@
#include <Pico/PicoInt.h>
#include <Pico/Patch.h>
#include <Pico/cd/cue.h>
#include <zlib/zlib.h>
#if defined(__GP2X__)
@ -163,12 +164,24 @@ int emu_cdCheck(int *pregion)
{
unsigned char buf[32];
pm_file *cd_f;
int type = 0, region = 4; // 1: Japan, 4: US, 8: Europe
char ext[5];
int region = 4; // 1: Japan, 4: US, 8: Europe
char ext[5], *fname = romFileName;
cue_track_type type = CT_UNKNOWN;
cue_data_t *cue_data = NULL;
get_ext(romFileName, ext);
if (strcasecmp(ext, ".cue") == 0) {
cue_data = cue_parse(romFileName);
if (cue_data != NULL) {
fname = cue_data->tracks[1].fname;
type = cue_data->tracks[1].type;
}
}
cd_f = pm_open(fname);
if (cue_data != NULL)
cue_destroy(cue_data);
cd_f = pm_open(romFileName);
if (!cd_f) return 0; // let the upper level handle this
if (pm_read(buf, 32, cd_f) != 32) {
@ -176,18 +189,27 @@ int emu_cdCheck(int *pregion)
return 0;
}
if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x00, 14)) type = 1; // Sega CD (ISO)
if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x10, 14)) type = 2; // Sega CD (BIN)
if (type == 0) {
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 == 1) ? 0x100 : 0x110, SEEK_SET);
pm_seek(cd_f, (type == CT_ISO) ? 0x100 : 0x110, SEEK_SET);
pm_read(id_header, sizeof(id_header), cd_f);
/* it seems we have a CD image here. Try to detect region now.. */
pm_seek(cd_f, (type == 1) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);
pm_seek(cd_f, (type == CT_ISO) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);
pm_read(buf, 1, cd_f);
pm_close(cd_f);
@ -195,7 +217,7 @@ int emu_cdCheck(int *pregion)
if (buf[0] == 0xa1) region = 1; // JAP
lprintf("detected %s Sega/Mega CD image with %s region\n",
type == 2 ? "BIN" : "ISO", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");
type == CT_BIN ? "BIN" : "ISO", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");
if (pregion != NULL) *pregion = region;