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megacd: some refactoring to support zip.

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This commit is contained in:
sorgelig
2019-11-20 13:40:33 +08:00
parent 0b31ad20a7
commit cdc8bddb36
2 changed files with 90 additions and 111 deletions
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197
support/megacd/cdd.cpp
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@@ -38,24 +38,52 @@ cdd_t::cdd_t() {
stat[9] = 0x4;
}
static int sgets(char *out, int sz, char **in)
{
char *instr = *in;
int cnt = 0;
while(*instr && *instr != 10)
{
if (*instr == 13)
{
instr++;
continue;
}
if (cnt < sz - 1)
{
out[cnt++] = *instr;
out[cnt] = 0;
}
instr++;
}
if (*instr) instr++;
*in = instr;
return cnt || *instr;
}
int cdd_t::LoadCUE(const char* filename) {
char fname[1024 + 10];
char line[128];
static char fname[1024 + 10];
static char line[128];
char *ptr, *lptr;
char header[1024];
FILE *fd;
static char header[1024];
static char toc[100 * 1024];
strcpy(fname, filename);
if (!(fd = fopen(getFullPath(fname), "r")))
return -1;
memset(toc, 0, sizeof(toc));
if (!FileLoad(fname, toc, sizeof(toc) - 1)) return 1;
printf("\x1b[32mMCD: Open CUE: %s\n\x1b[0m", fname);
int mm, ss, bb, pregap = 0;
while (fgets(line, 128, fd))
char *buf = toc;
while (sgets(line, sizeof(line), &buf))
{
lptr = line;
while (*lptr == 0x20) lptr++;
@@ -83,9 +111,7 @@ int cdd_t::LoadCUE(const char* filename) {
}
*ptr = 0;
this->toc.tracks[this->toc.last].fd = fopen(getFullPath(fname), "r");
if (!this->toc.tracks[this->toc.last].fd)
return -1;
if(!FileOpen(&this->toc.tracks[this->toc.last].f, fname)) return -1;
printf("\x1b[32mMCD: Open track file: %s\n\x1b[0m", fname);
@@ -95,9 +121,7 @@ int cdd_t::LoadCUE(const char* filename) {
if (!strstr(lptr, "BINARY") && !strstr(lptr, "MOTOROLA"))
{
fclose(this->toc.tracks[this->toc.last].fd);
this->toc.tracks[this->toc.last].fd = 0;
FileClose(&this->toc.tracks[this->toc.last].f);
printf("\x1b[32mMCD: unsupported file: %s\n\x1b[0m", fname);
return -1;
@@ -109,14 +133,8 @@ int cdd_t::LoadCUE(const char* filename) {
{
if (bb != (this->toc.last + 1))
{
if (this->toc.tracks[this->toc.last].fd)
{
fclose(this->toc.tracks[this->toc.last].fd);
this->toc.tracks[this->toc.last].fd = 0;
}
FileClose(&this->toc.tracks[this->toc.last].f);
printf("\x1b[32mMCD: missing tracks: %s\n\x1b[0m", fname);
break;
}
@@ -130,20 +148,20 @@ int cdd_t::LoadCUE(const char* filename) {
{
this->sectorSize = 2352;
fseek(this->toc.tracks[0].fd, 0x10, SEEK_SET);
FileSeek(&this->toc.tracks[0].f, 0x10, SEEK_SET);
}
if (this->sectorSize)
{
this->toc.tracks[0].type = 1;
fread(header, 0x210, 1, this->toc.tracks[0].fd);
fseek(this->toc.tracks[0].fd, 0, SEEK_SET);
FileReadAdv(&this->toc.tracks[0].f, header, 0x210);
FileSeek(&this->toc.tracks[0].f, 0, SEEK_SET);
}
}
else
{
if (!this->toc.tracks[this->toc.last].fd)
if (!this->toc.tracks[this->toc.last].f.opened())
{
this->toc.tracks[this->toc.last - 1].end = 0;
}
@@ -170,9 +188,9 @@ int cdd_t::LoadCUE(const char* filename) {
{
this->toc.tracks[this->toc.last].offset += pregap * 2352;
if (!this->toc.tracks[this->toc.last].fd)
if (!this->toc.tracks[this->toc.last].f.opened())
{
this->toc.tracks[this->toc.last].fd = this->toc.tracks[0].fd;
FileOpen(&this->toc.tracks[this->toc.last].f, fname);
this->toc.tracks[this->toc.last].start = bb + ss * 75 + mm * 60 * 75 + pregap;
if (this->toc.last && !this->toc.tracks[this->toc.last - 1].end)
{
@@ -181,21 +199,14 @@ int cdd_t::LoadCUE(const char* filename) {
}
else
{
FileSeek(&this->toc.tracks[this->toc.last].f, 0, SEEK_SET);
this->toc.tracks[this->toc.last].start = this->toc.end + pregap;
this->toc.tracks[this->toc.last].offset += this->toc.end * 2352;
{
fseek(this->toc.tracks[this->toc.last].fd, 0, SEEK_END);
if (this->toc.tracks[this->toc.last].type)
{
this->toc.tracks[this->toc.last].end = this->toc.tracks[this->toc.last].start + ((ftell(this->toc.tracks[this->toc.last].fd) + this->sectorSize - 1) / this->sectorSize);
}
else
{
this->toc.tracks[this->toc.last].end = this->toc.tracks[this->toc.last].start + ((ftell(this->toc.tracks[this->toc.last].fd) + 2351) / 2352);
}
fseek(this->toc.tracks[this->toc.last].fd, 0, SEEK_SET);
}
int sectorSize = 2352;
if (this->toc.tracks[this->toc.last].type) sectorSize = this->sectorSize;
this->toc.tracks[this->toc.last].end = this->toc.tracks[this->toc.last].start + ((this->toc.tracks[this->toc.last].f.size + sectorSize - 1) / sectorSize);
this->toc.tracks[this->toc.last].start += (bb + ss * 75 + mm * 60 * 75);
this->toc.end = this->toc.tracks[this->toc.last].end;
@@ -214,21 +225,15 @@ int cdd_t::LoadCUE(const char* filename) {
this->toc.tracks[this->toc.last - 1].end = this->toc.end;
}
if (this->toc.tracks[this->toc.last].fd)
{
fclose(this->toc.tracks[this->toc.last].fd);
}
fclose(fd);
FileClose(&this->toc.tracks[this->toc.last].f);
return 0;
}
int cdd_t::Load(const char *filename)
{
char fname[1024 + 10];
char header[1024];
FILE *fd_img;
//char fname[1024 + 10];
static char header[1024];
fileTYPE *fd_img;
Unload();
@@ -236,11 +241,10 @@ int cdd_t::Load(const char *filename)
return (-1);
}
fd_img = this->toc.tracks[0].fd;
fd_img = &this->toc.tracks[0].f;
fseek(fd_img, 0, SEEK_SET);
fread(header, 0x10, 1, fd_img);
FileSeek(fd_img, 0, SEEK_SET);
FileReadAdv(fd_img, header, 0x10);
if (!memcmp("SEGADISCSYSTEM", header, 14))
{
@@ -248,7 +252,7 @@ int cdd_t::Load(const char *filename)
}
else
{
fread(header, 0x10, 1, fd_img);
FileReadAdv(fd_img, header, 0x10);
if (!memcmp("SEGADISCSYSTEM", header, 14))
{
this->sectorSize = 2352;
@@ -257,13 +261,12 @@ int cdd_t::Load(const char *filename)
if (this->sectorSize)
{
fread(header + 0x10, 0x200, 1, fd_img);
fseek(fd_img, 0, SEEK_SET);
FileReadAdv(fd_img, header + 0x10, 0x200);
FileSeek(fd_img, 0, SEEK_SET);
}
else
{
fclose(fd_img);
FileClose(fd_img);
return (-1);
}
@@ -274,8 +277,8 @@ int cdd_t::Load(const char *filename)
this->toc.tracks[this->toc.last].start = this->toc.end;
this->loaded = 1;
memcpy(&fname[strlen(fname) - 4], ".sub", 4);
this->toc.sub = fopen(getFullPath(fname), "r");
//memcpy(&fname[strlen(fname) - 4], ".sub", 4);
//this->toc.sub = fopen(getFullPath(fname), "r");
printf("\x1b[32mMCD: CD mounted , last track = %u\n\x1b[0m", this->toc.last);
@@ -291,22 +294,11 @@ void cdd_t::Unload()
{
for (int i = 0; i < this->toc.last; i++)
{
if (this->toc.tracks[i].fd)
{
if ((i > 0) && (this->toc.tracks[i].fd == this->toc.tracks[i - 1].fd))
{
i++;
}
else
{
fclose(this->toc.tracks[i].fd);
}
}
FileClose(&this->toc.tracks[i].f);
}
if (this->toc.sub) {
fclose(this->toc.sub);
}
//if (this->toc.sub) fclose(this->toc.sub);
this->loaded = 0;
}
@@ -347,10 +339,7 @@ void cdd_t::Update() {
return;
}
if (this->toc.sub)
{
//mcd_sub_send();
}
//if (this->toc.sub) mcd_sub_send();
if (this->toc.tracks[this->index].type)
{
@@ -385,9 +374,9 @@ void cdd_t::Update() {
this->isData = 0x01;
if (this->toc.tracks[this->index].fd)
if (this->toc.tracks[this->index].f.opened())
{
fseek(this->toc.tracks[this->index].fd, (this->toc.tracks[this->index].start * 2352) - this->toc.tracks[this->index].offset, SEEK_SET);
FileSeek(&this->toc.tracks[this->index].f, (this->toc.tracks[this->index].start * 2352) - this->toc.tracks[this->index].offset, SEEK_SET);
}
}
}
@@ -425,20 +414,17 @@ void cdd_t::Update() {
this->isData = this->toc.tracks[this->index].type;
if (this->toc.sub)
{
fseek(this->toc.sub, this->lba * 96, SEEK_SET);
}
//if (this->toc.sub) fseek(this->toc.sub, this->lba * 96, SEEK_SET);
if (this->toc.tracks[this->index].type)
{
// DATA track
fseek(this->toc.tracks[0].fd, this->lba * this->sectorSize, SEEK_SET);
FileSeek(&this->toc.tracks[0].f, this->lba * this->sectorSize, SEEK_SET);
}
else if (this->toc.tracks[this->index].fd)
else if (this->toc.tracks[this->index].f.opened())
{
// AUDIO track
fseek(this->toc.tracks[this->index].fd, (this->lba * 2352) - this->toc.tracks[this->index].offset, SEEK_SET);
FileSeek(&this->toc.tracks[this->index].f, (this->lba * 2352) - this->toc.tracks[this->index].offset, SEEK_SET);
}
}
}
@@ -629,20 +615,17 @@ void cdd_t::CommandExec() {
if (this->toc.tracks[index].type)
{
/* DATA track */
fseek(this->toc.tracks[0].fd, lba_ * this->sectorSize, SEEK_SET);
FileSeek(&this->toc.tracks[0].f, lba_ * this->sectorSize, SEEK_SET);
}
else if (cdd.toc.tracks[index].fd)
else if (cdd.toc.tracks[index].f.opened())
{
/* PCM AUDIO track */
fseek(this->toc.tracks[index].fd, (lba_ * 2352) - this->toc.tracks[index].offset, SEEK_SET);
FileSeek(&this->toc.tracks[index].f, (lba_ * 2352) - this->toc.tracks[index].offset, SEEK_SET);
}
this->audioOffset = 0;
if (this->toc.sub)
{
fseek(this->toc.sub, lba_ * 96, SEEK_SET);
}
//if (this->toc.sub) fseek(this->toc.sub, lba_ * 96, SEEK_SET);
this->isData = 1;
@@ -683,21 +666,17 @@ void cdd_t::CommandExec() {
if (this->toc.tracks[index].type)
{
// DATA track
fseek(this->toc.tracks[0].fd, lba_ * this->sectorSize, SEEK_SET);
FileSeek(&this->toc.tracks[0].f, lba_ * this->sectorSize, SEEK_SET);
}
else if (this->toc.tracks[index].fd)
else if (this->toc.tracks[index].f.opened())
{
// AUDIO track
fseek(this->toc.tracks[index].fd, (lba_ * 2352) - this->toc.tracks[index].offset, SEEK_SET);
FileSeek(&this->toc.tracks[index].f, (lba_ * 2352) - this->toc.tracks[index].offset, SEEK_SET);
}
//this->audioOffset = 0;
if (this->toc.sub)
{
fseek(this->toc.sub, lba_ * 96, SEEK_SET);
}
//if (this->toc.sub) fseek(this->toc.sub, lba_ * 96, SEEK_SET);
this->isData = 1;
@@ -824,23 +803,20 @@ void cdd_t::MSFToLBA(int* lba, msf_t* msf) {
*lba = msf->f + msf->s * 75 + msf->m * 60 * 75;
}
void cdd_t::ReadData(uint8_t *buf)
{
if (this->toc.tracks[this->index].type && (this->lba >= 0))
{
if (this->sectorSize == 2048)
{
fseek(this->toc.tracks[0].fd, this->lba * 2048, SEEK_SET);
FileSeek(&this->toc.tracks[0].f, this->lba * 2048, SEEK_SET);
}
else
{
fseek(this->toc.tracks[0].fd, this->lba * 2352 + 16, SEEK_SET);
FileSeek(&this->toc.tracks[0].f, this->lba * 2352 + 16, SEEK_SET);
}
fread(buf, 2048, 1, this->toc.tracks[0].fd);
FileReadAdv(&this->toc.tracks[0].f, buf, 2048);
}
}
@@ -849,9 +825,9 @@ int cdd_t::ReadCDDA(uint8_t *buf)
this->audioLength = 2352 + 2352 - this->audioOffset;
this->audioOffset = 2352;
if (!this->isData && this->toc.tracks[this->index].fd)
if (!this->isData && this->toc.tracks[this->index].f.opened())
{
fread(buf, this->audioLength, 1, this->toc.tracks[this->index].fd);
FileReadAdv(&this->toc.tracks[this->index].f, buf, this->audioLength);
}
return this->audioLength;
@@ -859,6 +835,8 @@ int cdd_t::ReadCDDA(uint8_t *buf)
void cdd_t::ReadSubcode(uint16_t* buf)
{
(void)buf;
/*
uint8_t subc[96];
int i, j, n;
@@ -876,6 +854,7 @@ void cdd_t::ReadSubcode(uint16_t* buf)
buf[n] = code;
}
*/
}

4
support/megacd/megacd.h
View File

@@ -37,7 +37,7 @@
typedef struct
{
FILE *fd;
fileTYPE f;
int offset;
int start;
int end;
@@ -49,7 +49,7 @@ typedef struct
int end;
int last;
track_t tracks[100];
FILE *sub;
// fileTYPE sub;
} toc_t;
typedef struct