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improve CD stream init

This commit is contained in:
CasualPokePlayer 2024-04-26 12:43:22 -07:00
parent 9e2d239a02
commit 3e3d8fbec3
1 changed files with 14 additions and 6 deletions
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20
waterbox/gpgx/cinterface/cdStreamImpl.c
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@ -35,14 +35,22 @@ ECL_INVISIBLE static int cache_is_allocated[256];
} \
} while (0);
static void cdStreamInit(cdStream* stream, int is_subcode)
static void cdStreamInit(cdStream* stream, toc_t* toc, int is_subcode)
{
stream->sector_size = is_subcode ? SECTOR_SUBCODE_SIZE : SECTOR_DATA_SIZE;
stream->num_sectors = cdd.toc.end; // should only be called with current CD
stream->num_sectors = toc->end;
stream->current_sector = 0;
stream->current_offset = 0;
stream->end_offset = stream->sector_size * (int64_t)stream->num_sectors;
ALLOC_CACHE(stream);
if (!is_subcode)
{
for (int i = 0; i < toc->last; i++)
{
toc->tracks[i].fd = stream;
}
}
}
cdStream* cdStreamOpen(const char* fname)
@ -61,14 +69,14 @@ cdStream* cdStreamOpen(const char* fname)
if (load_archive("PRIMARY_CD", (unsigned char*)&cdd.toc, sizeof(toc_t), NULL))
{
cd_index = 0;
cdStreamInit(&cd_streams[0], 0);
cdStreamInit(&cd_streams[0], &cdd.toc, 0);
return &cd_streams[0];
}
}
else if (!strcmp(fname, "HOTSWAP_CD"))
{
memcpy(&cdd.toc, &hotswap_toc, sizeof(toc_t));
cdStreamInit(&cd_streams[cd_index], 0);
cdStreamInit(&cd_streams[cd_index], &cdd.toc, 0);
return &cd_streams[cd_index];
}
}
@ -78,14 +86,14 @@ cdStream* cdStreamOpen(const char* fname)
if (load_archive("SECONDARY_CD", (unsigned char*)&cdd.toc, sizeof(toc_t), NULL))
{
cd_index = 0;
cdStreamInit(&cd_streams[0], 0);
cdStreamInit(&cd_streams[0], &cdd.toc, 0);
return &cd_streams[0];
}
}
else if (!strcmp(fext, ".sub"))
{
// separate stream for subcode
cdStreamInit(&subcode_streams[cd_index], 1);
cdStreamInit(&subcode_streams[cd_index], &cdd.toc, 1);
return &subcode_streams[cd_index];
}