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-rw-r--r--libpcsxcore/cdriso.c399
1 files changed, 331 insertions, 68 deletions
diff --git a/libpcsxcore/cdriso.c b/libpcsxcore/cdriso.c
index 6df8b67..c29fd77 100644
--- a/libpcsxcore/cdriso.c
+++ b/libpcsxcore/cdriso.c
@@ -31,6 +31,7 @@
#include <pthread.h>
#include <sys/time.h>
#endif
+#include <zlib.h>
static FILE *cdHandle = NULL;
static FILE *cddaHandle = NULL;
@@ -55,14 +56,26 @@ static pthread_t threadid;
static unsigned int initial_offset = 0;
static boolean playing = FALSE;
static boolean cddaBigEndian = FALSE;
-static unsigned int cddaCurOffset = 0;
-static unsigned int cddaStartOffset;
+static unsigned int cdda_cur_sector;
+static unsigned int cdda_start_sector;
/* Frame offset into CD image where pregap data would be found if it was there.
* If a game seeks there we must *not* return subchannel data since it's
* not in the CD image, so that cdrom code can fake subchannel data instead.
* XXX: there could be multiple pregaps but PSX dumps only have one? */
static unsigned int pregapOffset;
+// compressed image stuff
+static struct {
+ unsigned char buff_raw[16][CD_FRAMESIZE_RAW];
+ unsigned char buff_compressed[CD_FRAMESIZE_RAW * 16 + 100];
+ unsigned int *index_table;
+ unsigned int index_len;
+ unsigned int current_block;
+ unsigned int sector_in_blk;
+} *compr_img;
+
+int (*cdimg_read_func)(FILE *f, void *dest, int sector, int offset);
+
char* CALLBACK CDR__getDriveLetter(void);
long CALLBACK CDR__configure(void);
long CALLBACK CDR__test(void);
@@ -178,32 +191,21 @@ static void *playthread(void *param)
t = GetTickCount() + CDDA_FRAMETIME;
- if (subChanMixed) {
- s = 0;
-
- for (i = 0; i < sizeof(sndbuffer) / CD_FRAMESIZE_RAW; i++) {
- // read one sector
- d = fread(sndbuffer + CD_FRAMESIZE_RAW * i, 1, CD_FRAMESIZE_RAW, cddaHandle);
- if (d < CD_FRAMESIZE_RAW) {
- break;
- }
-
- s += d;
+ s = 0;
+ for (i = 0; i < sizeof(sndbuffer) / CD_FRAMESIZE_RAW; i++) {
+ d = cdimg_read_func(cddaHandle, sndbuffer + s, cdda_cur_sector, 0);
+ if (d < CD_FRAMESIZE_RAW)
+ break;
- fread(subbuffer, 1, SUB_FRAMESIZE, cddaHandle);
- if (subChanRaw) DecodeRawSubData();
- }
+ s += d;
+ cdda_cur_sector++;
}
- else {
- s = fread(sndbuffer, 1, sizeof(sndbuffer), cddaHandle);
- if (subHandle != NULL) {
- fread(subbuffer, 1, SUB_FRAMESIZE, subHandle);
- if (subChanRaw) DecodeRawSubData();
+ if (subHandle != NULL) {
+ fseek(subHandle, cdda_cur_sector * SUB_FRAMESIZE, SEEK_SET);
+ fread(subbuffer, 1, SUB_FRAMESIZE, subHandle);
- // a bit crude but ohwell
- fseek(subHandle, (sizeof(sndbuffer) / CD_FRAMESIZE_RAW - 1) * SUB_FRAMESIZE, SEEK_CUR);
- }
+ if (subChanRaw) DecodeRawSubData();
}
if (s == 0) {
@@ -223,8 +225,6 @@ static void *playthread(void *param)
SPU_playCDDAchannel((short *)sndbuffer, s);
}
-
- cddaCurOffset += s;
}
#ifdef _WIN32
@@ -247,23 +247,15 @@ static void stopCDDA() {
#else
pthread_join(threadid, NULL);
#endif
-
- initial_offset = 0;
}
// start the CDDA playback
-static void startCDDA(unsigned int offset) {
+static void startCDDA(unsigned int sector) {
if (playing) {
- if (initial_offset == offset) {
- return;
- }
stopCDDA();
}
- initial_offset = offset;
- cddaCurOffset = initial_offset;
- fseek(cddaHandle, initial_offset, SEEK_SET);
-
+ cdda_cur_sector = sector;
playing = TRUE;
#ifdef _WIN32
@@ -703,6 +695,133 @@ static int parsemds(const char *isofile) {
return 0;
}
+static int parsepbp(const char *isofile) {
+ struct {
+ unsigned int sig;
+ unsigned int dontcare[8];
+ unsigned int psar_offs;
+ } pbp_hdr;
+ struct {
+ unsigned char type;
+ unsigned char pad0;
+ unsigned char track;
+ char index0[3];
+ char pad1;
+ char index1[3];
+ } toc_entry;
+ struct {
+ unsigned int offset;
+ unsigned int size;
+ unsigned int dontcare[6];
+ } index_entry;
+ char psar_sig[9];
+ unsigned int t, cd_length, cdimg_base;
+ const char *ext = NULL;
+ int i, ret;
+
+ if (strlen(isofile) >= 4)
+ ext = isofile + strlen(isofile) - 4;
+ if (ext == NULL || (strcmp(ext, ".pbp") != 0 && strcmp(ext, ".PBP") != 0))
+ return -1;
+
+ numtracks = 0;
+
+ ret = fread(&pbp_hdr, 1, sizeof(pbp_hdr), cdHandle);
+ if (ret != sizeof(pbp_hdr)) {
+ fprintf(stderr, "failed to read pbp\n");
+ goto fail_io;
+ }
+
+ ret = fseek(cdHandle, pbp_hdr.psar_offs, SEEK_SET);
+ if (ret != 0) {
+ fprintf(stderr, "failed to seek to %x\n", pbp_hdr.psar_offs);
+ goto fail_io;
+ }
+
+ fread(psar_sig, 1, sizeof(psar_sig), cdHandle);
+ psar_sig[8] = 0;
+ if (strcmp(psar_sig, "PSISOIMG") != 0) {
+ fprintf(stderr, "bad psar_sig: %s\n", psar_sig);
+ goto fail_io;
+ }
+
+ // seek to TOC
+ ret = fseek(cdHandle, pbp_hdr.psar_offs + 0x800, SEEK_SET);
+ if (ret != 0) {
+ fprintf(stderr, "failed to seek to %x\n", pbp_hdr.psar_offs);
+ goto fail_io;
+ }
+
+ // first 3 entries are special
+ fseek(cdHandle, sizeof(toc_entry), SEEK_CUR);
+ fread(&toc_entry, 1, sizeof(toc_entry), cdHandle);
+ numtracks = btoi(toc_entry.index1[0]);
+
+ fread(&toc_entry, 1, sizeof(toc_entry), cdHandle);
+ cd_length = btoi(toc_entry.index1[0]) * 60 * 75 +
+ btoi(toc_entry.index1[1]) * 75 + btoi(toc_entry.index1[2]);
+
+ for (i = 1; i <= numtracks; i++) {
+ fread(&toc_entry, 1, sizeof(toc_entry), cdHandle);
+
+ ti[i].type = (toc_entry.type == 1) ? CDDA : DATA;
+
+ ti[i].start_offset = btoi(toc_entry.index0[0]) * 60 * 75 +
+ btoi(toc_entry.index0[1]) * 75 + btoi(toc_entry.index0[2]);
+ ti[i].start[0] = btoi(toc_entry.index1[0]);
+ ti[i].start[1] = btoi(toc_entry.index1[1]);
+ ti[i].start[2] = btoi(toc_entry.index1[2]);
+
+ if (i > 1) {
+ t = msf2sec(ti[i].start) - msf2sec(ti[i - 1].start);
+ sec2msf(t, ti[i - 1].length);
+ }
+ }
+ t = cd_length - ti[numtracks].start_offset;
+ sec2msf(t, ti[numtracks].length);
+
+ // seek to ISO index
+ ret = fseek(cdHandle, pbp_hdr.psar_offs + 0x4000, SEEK_SET);
+ if (ret != 0) {
+ fprintf(stderr, "failed to seek to ISO index\n");
+ goto fail_io;
+ }
+
+ compr_img = calloc(1, sizeof(*compr_img));
+ if (compr_img == NULL)
+ goto fail_io;
+
+ compr_img->current_block = (unsigned int)-1;
+
+ compr_img->index_len = (0x100000 - 0x4000) / sizeof(index_entry);
+ compr_img->index_table = malloc((compr_img->index_len + 1) * sizeof(compr_img->index_table[0]));
+ if (compr_img->index_table == NULL)
+ goto fail_io;
+
+ cdimg_base = pbp_hdr.psar_offs + 0x100000;
+ for (i = 0; i < compr_img->index_len; i++) {
+ ret = fread(&index_entry, 1, sizeof(index_entry), cdHandle);
+ if (ret != sizeof(index_entry)) {
+ fprintf(stderr, "failed to read index_entry #%d\n", i);
+ goto fail_index;
+ }
+
+ if (index_entry.size == 0)
+ break;
+
+ compr_img->index_table[i] = cdimg_base + index_entry.offset;
+ }
+ compr_img->index_table[i] = cdimg_base + index_entry.offset + index_entry.size;
+
+ return 0;
+
+fail_index:
+ free(compr_img->index_table);
+ compr_img->index_table = NULL;
+fail_io:
+ return -1;
+}
+
// this function tries to get the .sub file of the given .img
static int opensubfile(const char *isoname) {
char subname[MAXPATHLEN];
@@ -744,6 +863,139 @@ static int opensbifile(const char *isoname) {
return LoadSBI(sbiname, s);
}
+static int cdread_normal(FILE *f, void *dest, int sector, int offset)
+{
+ fseek(f, sector * CD_FRAMESIZE_RAW + offset, SEEK_SET);
+ return fread(dest, 1, CD_FRAMESIZE_RAW - offset, f);
+}
+
+static int cdread_sub_mixed(FILE *f, void *dest, int sector, int offset)
+{
+ int ret;
+
+ fseek(f, sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE) + offset, SEEK_SET);
+ ret = fread(dest, 1, CD_FRAMESIZE_RAW - offset, f);
+ fread(subbuffer, 1, SUB_FRAMESIZE, f);
+
+ if (subChanRaw) DecodeRawSubData();
+
+ return ret;
+}
+
+static int uncompress2(void *out, unsigned long *out_size, void *in, unsigned long in_size)
+{
+ static z_stream z;
+ int ret = 0;
+
+ if (z.zalloc == NULL) {
+ // XXX: one-time leak here..
+ z.next_in = Z_NULL;
+ z.avail_in = 0;
+ z.zalloc = Z_NULL;
+ z.zfree = Z_NULL;
+ z.opaque = Z_NULL;
+ ret = inflateInit2(&z, -15);
+ }
+ else
+ ret = inflateReset(&z);
+ if (ret != Z_OK)
+ return ret;
+
+ z.next_in = in;
+ z.avail_in = in_size;
+ z.next_out = out;
+ z.avail_out = *out_size;
+
+ ret = inflate(&z, Z_NO_FLUSH);
+ //inflateEnd(&z);
+
+ *out_size -= z.avail_out;
+ return ret == 1 ? 0 : ret;
+}
+
+static int cdread_compressed(FILE *f, void *dest, int sector, int offset)
+{
+ unsigned int start_byte, size;
+ unsigned long cdbuffer_size;
+ int ret, block;
+
+ block = sector >> 4;
+ compr_img->sector_in_blk = sector & 15;
+
+ if (block == compr_img->current_block) {
+ //printf("hit sect %d\n", sector);
+ goto finish;
+ }
+
+ if (sector >= compr_img->index_len * 16) {
+ fprintf(stderr, "sector %d is past img end\n", sector);
+ return -1;
+ }
+
+ start_byte = compr_img->index_table[block];
+ if (fseek(cdHandle, start_byte, SEEK_SET) != 0) {
+ fprintf(stderr, "seek error for block %d at %x: ",
+ block, start_byte);
+ perror(NULL);
+ return -1;
+ }
+
+ size = compr_img->index_table[block + 1] - start_byte;
+ if (size > sizeof(compr_img->buff_compressed)) {
+ fprintf(stderr, "block %d is too large: %u\n", block, size);
+ return -1;
+ }
+
+ if (fread(compr_img->buff_compressed, 1, size, cdHandle) != size) {
+ fprintf(stderr, "read error for block %d at %x: ", block, start_byte);
+ perror(NULL);
+ return -1;
+ }
+
+ cdbuffer_size = sizeof(compr_img->buff_raw[0]) * 16;
+ ret = uncompress2(compr_img->buff_raw[0], &cdbuffer_size, compr_img->buff_compressed, size);
+ if (ret != 0) {
+ fprintf(stderr, "uncompress failed with %d for block %d, sector %d\n",
+ ret, block, sector);
+ return -1;
+ }
+ if (cdbuffer_size != sizeof(compr_img->buff_raw[0]) * 16)
+ fprintf(stderr, "cdbuffer_size: %lu != %d, sector %d\n", cdbuffer_size,
+ sizeof(compr_img->buff_raw[0]) * 16, sector);
+
+ // done at last!
+ compr_img->current_block = block;
+
+finish:
+ if (dest != cdbuffer) // copy avoid HACK
+ memcpy(dest, compr_img->buff_raw[compr_img->sector_in_blk] + offset,
+ CD_FRAMESIZE_RAW - offset);
+ return CD_FRAMESIZE_RAW - offset;
+}
+
+static int cdread_2048(FILE *f, void *dest, int sector, int offset)
+{
+ int ret;
+
+ fseek(f, sector * 2048, SEEK_SET);
+ ret = fread((char *)dest + 12, 1, 2048, f);
+
+ // not really necessary, fake mode 2 header
+ memset(cdbuffer, 0, 12);
+ sec2msf(sector + 2 * 75, (char *)cdbuffer);
+ cdbuffer[3] = 1;
+
+ return ret;
+}
+
+static unsigned char * CALLBACK ISOgetBuffer_compr(void) {
+ return compr_img->buff_raw[compr_img->sector_in_blk] + 12;
+}
+
+static unsigned char * CALLBACK ISOgetBuffer(void) {
+ return cdbuffer;
+}
+
static void PrintTracks(void) {
int i;
@@ -758,6 +1010,8 @@ static void PrintTracks(void) {
// This function is invoked by the front-end when opening an ISO
// file for playback
static long CALLBACK ISOopen(void) {
+ boolean isMode1ISO = FALSE;
+
if (cdHandle != NULL) {
return 0; // it's already open
}
@@ -772,9 +1026,11 @@ static long CALLBACK ISOopen(void) {
cddaBigEndian = FALSE;
subChanMixed = FALSE;
subChanRaw = FALSE;
- subChanMixed = FALSE;
pregapOffset = 0;
+ CDR_getBuffer = ISOgetBuffer;
+ cdimg_read_func = cdread_normal;
+
if (parsecue(GetIsoFile()) == 0) {
SysPrintf("[+cue]");
}
@@ -787,6 +1043,11 @@ static long CALLBACK ISOopen(void) {
else if (parsemds(GetIsoFile()) == 0) {
SysPrintf("[+mds]");
}
+ else if (parsepbp(GetIsoFile()) == 0) {
+ SysPrintf("[pbp]");
+ CDR_getBuffer = ISOgetBuffer_compr;
+ cdimg_read_func = cdread_compressed;
+ }
if (!subChanMixed && opensubfile(GetIsoFile()) == 0) {
SysPrintf("[+sub]");
@@ -795,15 +1056,33 @@ static long CALLBACK ISOopen(void) {
SysPrintf("[+sbi]");
}
+ // guess whether it is mode1/2048
+ fseek(cdHandle, 0, SEEK_END);
+ if (ftell(cdHandle) % 2048 == 0) {
+ unsigned int modeTest = 0;
+ fseek(cdHandle, 0, SEEK_SET);
+ fread(&modeTest, 4, 1, cdHandle);
+ if (SWAP32(modeTest) != 0xffffff00) {
+ SysPrintf("[2048]");
+ isMode1ISO = TRUE;
+ }
+ }
+ fseek(cdHandle, 0, SEEK_SET);
+
SysPrintf(".\n");
PrintTracks();
+ if (subChanMixed)
+ cdimg_read_func = cdread_sub_mixed;
+ else if (isMode1ISO)
+ cdimg_read_func = cdread_2048;
+
// make sure we have another handle open for cdda
if (numtracks > 1 && ti[1].handle == NULL) {
ti[1].handle = fopen(GetIsoFile(), "rb");
}
- cddaCurOffset = cddaStartOffset = 0;
+ cdda_cur_sector = cdda_start_sector = 0;
return 0;
}
@@ -822,6 +1101,12 @@ static long CALLBACK ISOclose(void) {
stopCDDA();
cddaHandle = NULL;
+ if (compr_img != NULL) {
+ free(compr_img->index_table);
+ free(compr_img);
+ compr_img = NULL;
+ }
+
for (i = 1; i <= numtracks; i++) {
if (ti[i].handle != NULL) {
fclose(ti[i].handle);
@@ -928,33 +1213,18 @@ static long CALLBACK ISOreadTrack(unsigned char *time) {
}
}
- if (subChanMixed) {
- fseek(cdHandle, sector * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE) + 12, SEEK_SET);
- fread(cdbuffer, 1, DATA_SIZE, cdHandle);
- fread(subbuffer, 1, SUB_FRAMESIZE, cdHandle);
+ cdimg_read_func(cdHandle, cdbuffer, sector, 12);
- if (subChanRaw) DecodeRawSubData();
- }
- else {
- fseek(cdHandle, sector * CD_FRAMESIZE_RAW + 12, SEEK_SET);
- fread(cdbuffer, 1, DATA_SIZE, cdHandle);
-
- if (subHandle != NULL) {
- fseek(subHandle, sector * SUB_FRAMESIZE, SEEK_SET);
- fread(subbuffer, 1, SUB_FRAMESIZE, subHandle);
+ if (subHandle != NULL) {
+ fseek(subHandle, sector * SUB_FRAMESIZE, SEEK_SET);
+ fread(subbuffer, 1, SUB_FRAMESIZE, subHandle);
- if (subChanRaw) DecodeRawSubData();
- }
+ if (subChanRaw) DecodeRawSubData();
}
return 0;
}
-// return readed track
-static unsigned char * CALLBACK ISOgetBuffer(void) {
- return cdbuffer;
-}
-
// plays cdda audio
// sector: byte 0 - minute; byte 1 - second; byte 2 - frame
// does NOT uses bcd format
@@ -980,7 +1250,7 @@ static long CALLBACK ISOplay(unsigned char *time) {
if (ti[i].handle != NULL)
break;
- cddaStartOffset = abs_sect - file_sect;
+ cdda_start_sector = abs_sect - file_sect;
cddaHandle = ti[i].handle;
if (pregapOffset && (unsigned int)(pregapOffset - file_sect) < 2 * 75) {
@@ -989,14 +1259,7 @@ static long CALLBACK ISOplay(unsigned char *time) {
}
if (SPU_playCDDAchannel != NULL) {
- if (subChanMixed) {
- startCDDA(file_sect * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE));
- }
- else {
- startCDDA(file_sect * CD_FRAMESIZE_RAW);
- if (subHandle != NULL)
- fseek(subHandle, file_sect * SUB_FRAMESIZE, SEEK_SET);
- }
+ startCDDA(file_sect);
}
return 0;
}
@@ -1029,7 +1292,7 @@ static long CALLBACK ISOgetStatus(struct CdrStat *stat) {
stat->Type = 0x01;
}
- sec = (cddaStartOffset + cddaCurOffset) / CD_FRAMESIZE_RAW;
+ sec = cdda_start_sector + cdda_cur_sector;
sec2msf(sec, (char *)stat->Time);
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-16 11:19:31 +0000