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Philips CD-i (#939)

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* CD-i: add cd reading support

Inspired by the PSX code

* CD-i: add cd reading support

Fix CDI track type

* CD-i: NvRAM backup and restore
This commit is contained in:
Andre Zeps
2024-12-16 06:04:40 +01:00
committed by GitHub
parent 9e2e0d7088
commit b79e95ee97
6 changed files with 535 additions and 6 deletions
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36
user_io.cpp
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@@ -310,6 +310,13 @@ char is_psx()
return (is_psx_type == 1);
}
static int is_cdi_type = 0;
char is_cdi()
{
if (!is_cdi_type) is_cdi_type = strcasecmp(orig_name, "CD-i") ? 2 : 1;
return (is_cdi_type == 1);
}
static int is_st_type = 0;
char is_st()
{
@@ -2073,7 +2080,7 @@ int user_io_file_mount(const char *name, unsigned char index, char pre, int pre_
}
buffer_lba[index] = -1;
if (!index) use_save = pre;
if (!index || is_cdi()) use_save = pre;
if (!ret)
{
@@ -3017,7 +3024,10 @@ void user_io_poll()
lba = spi_w(0);
lba = (lba & 0xFFFF) | (((uint32_t)spi_w(0)) << 16);
blks = ((c >> 9) & 0x3F) + 1;
blksz = (disk == 1 && is_psx()) ? 2352 : (128 << ((c >> 6) & 7));
if ((disk == 0 && is_cdi()) || (disk == 1 && is_psx()))
blksz = 2352;
else
blksz = 128 << ((c >> 6) & 7);
sz = blksz * blks;
if (sz > sizeof(buffer[0]))
@@ -3140,11 +3150,16 @@ void user_io_poll()
else if (op & 1)
{
uint32_t buf_n = sizeof(buffer[0]) / blksz;
unsigned int psx_blksz = 0;
if (is_psx() && blksz == 2352)
{
//returns 0 if the mounted disk is not a chd, otherwise returns the chd hunksize in bytes
psx_blksz = psx_chd_hunksize();
unsigned int psx_blksz = psx_chd_hunksize();
if (psx_blksz && psx_blksz <= sizeof(buffer[0])) buf_n = psx_blksz / blksz;
}
else if (is_cdi() && blksz == 2352)
{
//returns 0 if the mounted disk is not a chd, otherwise returns the chd hunksize in bytes
unsigned int psx_blksz = cdi_chd_hunksize();
if (psx_blksz && psx_blksz <= sizeof(buffer[0])) buf_n = psx_blksz / blksz;
}
//printf("SD RD (%llu,%d) on %d, WIDE=%d\n", lba, blksz, disk, fio_size);
@@ -3162,6 +3177,13 @@ void user_io_poll()
done = 1;
buffer_lba[disk] = lba;
}
else if (blksz == 2352 && is_cdi())
{
diskled_on();
cdi_read_cd(buffer[disk], lba, buf_n);
done = 1;
buffer_lba[disk] = lba;
}
else if (sd_image[disk].size)
{
diskled_on();
@@ -3239,6 +3261,11 @@ void user_io_poll()
psx_read_cd(buffer[disk], lba, buf_n);
buffer_lba[disk] = lba;
}
else if (blksz == 2352 && is_cdi())
{
cdi_read_cd(buffer[disk], lba, buf_n);
buffer_lba[disk] = lba;
}
else if (FileSeek(&sd_image[disk], lba * blksz, SEEK_SET) &&
FileReadAdv(&sd_image[disk], buffer[disk], sizeof(buffer[disk])))
{
@@ -3538,6 +3565,7 @@ void user_io_poll()
if (is_megacd()) mcd_poll();
if (is_pce()) pcecd_poll();
if (is_saturn()) saturn_poll();
if (is_cdi()) cdi_poll();
if (is_psx()) psx_poll();
if (is_neogeo_cd()) neocd_poll();
if (is_n64()) n64_poll();