diff options
Diffstat (limited to 'libpcsxcore')
| -rw-r--r-- | libpcsxcore/cdriso.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/libpcsxcore/cdriso.c b/libpcsxcore/cdriso.c index 6f59579..fb074e5 100644 --- a/libpcsxcore/cdriso.c +++ b/libpcsxcore/cdriso.c @@ -27,6 +27,7 @@ #include <errno.h> #include <zlib.h> +#include <chd.h> #ifdef _WIN32 #define WIN32_LEAN_AND_MEAN @@ -93,6 +94,15 @@ static struct { unsigned int sector_in_blk; } *compr_img; +static struct { + unsigned char (*buffer)[CD_FRAMESIZE_RAW + SUB_FRAMESIZE]; + chd_file* chd; + const chd_header* header; + unsigned int sectors_per_hunk; + unsigned int current_hunk; + unsigned int sector_in_hunk; +} *chd_img; + int (*cdimg_read_func)(FILE *f, unsigned int base, void *dest, int sector); char* CALLBACK CDR__getDriveLetter(void); @@ -1029,6 +1039,78 @@ fail_io: return -1; } +static int handlechd(const char *isofile) { + chd_img = calloc(1, sizeof(*chd_img)); + if (chd_img == NULL) + goto fail_io; + + if(chd_open(isofile, CHD_OPEN_READ, NULL, &chd_img->chd) != CHDERR_NONE) + goto fail_io; + + chd_img->header = chd_get_header(chd_img->chd); + + chd_img->buffer = malloc(chd_img->header->hunkbytes); + if (chd_img->buffer == NULL) + goto fail_io; + + chd_img->sectors_per_hunk = chd_img->header->hunkbytes / (CD_FRAMESIZE_RAW + SUB_FRAMESIZE); + chd_img->current_hunk = (unsigned int)-1; + + cddaBigEndian = TRUE; + + numtracks = 0; + int frame_offset = 0; + memset(ti, 0, sizeof(ti)); + + while (1) + { + struct { + char type[64]; + char subtype[32]; + char pgtype[32]; + char pgsub[32]; + uint32_t track; + uint32_t frames; + uint32_t pregap; + uint32_t postgap; + } md = {}; + char meta[256]; + uint32_t meta_size = 0; + + if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA2_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE) + sscanf(meta, CDROM_TRACK_METADATA2_FORMAT, &md.track, md.type, md.subtype, &md.frames, &md.pregap, md.pgtype, md.pgsub, &md.postgap); + else if (chd_get_metadata(chd_img->chd, CDROM_TRACK_METADATA_TAG, numtracks, meta, sizeof(meta), &meta_size, NULL, NULL) == CHDERR_NONE) + sscanf(meta, CDROM_TRACK_METADATA_FORMAT, &md.track, md.type, md.subtype, &md.frames); + else + break; + + ti[md.track].type = !strncmp(md.type, "AUDIO", 5) ? CDDA : DATA; + + sec2msf(frame_offset + md.pregap, ti[md.track].start); + sec2msf(md.frames, ti[md.track].length); + + if (!strcmp(md.type, md.pgtype)) + frame_offset += md.pregap; + + ti[md.track].start_offset = frame_offset * CD_FRAMESIZE_RAW; + + frame_offset += (md.frames + 3) & ~3; + frame_offset += md.postgap; + numtracks++; + } + + if (numtracks) + return 0; + +fail_io: + if (chd_img != NULL) { + free(chd_img->buffer); + free(chd_img); + chd_img = NULL; + } + return -1; +} + // this function tries to get the .sub file of the given .img static int opensubfile(const char *isoname) { char subname[MAXPATHLEN]; @@ -1190,6 +1272,30 @@ finish: return CD_FRAMESIZE_RAW; } +static int cdread_chd(FILE *f, unsigned int base, void *dest, int sector) +{ + int hunk; + + if (base) + sector += base / CD_FRAMESIZE_RAW; + + hunk = sector / chd_img->sectors_per_hunk; + chd_img->sector_in_hunk = sector % chd_img->sectors_per_hunk; + + if (hunk == chd_img->current_hunk) + goto finish; + + chd_read(chd_img->chd, hunk, chd_img->buffer); + + chd_img->current_hunk = hunk; + +finish: + if (dest != cdbuffer) // copy avoid HACK + memcpy(dest, chd_img->buffer[chd_img->sector_in_hunk], + CD_FRAMESIZE_RAW); + return CD_FRAMESIZE_RAW; +} + static int cdread_2048(FILE *f, unsigned int base, void *dest, int sector) { int ret; @@ -1209,6 +1315,10 @@ static unsigned char * CALLBACK ISOgetBuffer_compr(void) { return compr_img->buff_raw[compr_img->sector_in_blk] + 12; } +static unsigned char * CALLBACK ISOgetBuffer_chd(void) { + return chd_img->buffer[chd_img->sector_in_hunk] + 12; +} + static unsigned char * CALLBACK ISOgetBuffer(void) { return cdbuffer + 12; } @@ -1276,6 +1386,11 @@ static long CALLBACK ISOopen(void) { CDR_getBuffer = ISOgetBuffer_compr; cdimg_read_func = cdread_compressed; } + else if (handlechd(GetIsoFile()) == 0) { + SysPrintf("[chd]"); + CDR_getBuffer = ISOgetBuffer_chd; + cdimg_read_func = cdread_chd; + } if (!subChanMixed && opensubfile(GetIsoFile()) == 0) { SysPrintf("[+sub]"); @@ -1364,6 +1479,13 @@ static long CALLBACK ISOclose(void) { compr_img = NULL; } + if (chd_img != NULL) { + chd_close(chd_img->chd); + free(chd_img->buffer); + free(chd_img); + chd_img = NULL; + } + for (i = 1; i <= numtracks; i++) { if (ti[i].handle != NULL) { fclose(ti[i].handle); |