static void *open_chd(const char *filename, movie_info *info)
{
int fps, fpsfrac, width, height, interlaced, channels, rate;
char metadata[256];
chd_error chderr;
chd_file *chd;
/* open the file */
chderr = chd_open(filename, CHD_OPEN_READ, NULL, &chd);
if (chderr != CHDERR_NONE)
{
fprintf(stderr, "Error opening CHD file: %s\n", chd_error_string(chderr));
return NULL;
}
/* get the metadata */
chderr = chd_get_metadata(chd, AV_METADATA_TAG, 0, metadata, sizeof(metadata), NULL, NULL, NULL);
if (chderr != CHDERR_NONE)
{
fprintf(stderr, "Error getting A/V metadata: %s\n", chd_error_string(chderr));
chd_close(chd);
return NULL;
}
/* extract the info */
if (sscanf(metadata, AV_METADATA_FORMAT, &fps, &fpsfrac, &width, &height, &interlaced, &channels, &rate) != 7)
{
fprintf(stderr, "Improperly formatted metadata\n");
chd_close(chd);
return NULL;
}
/* extract movie info */
info->framerate = (fps * 1000000 + fpsfrac) / 1000000.0;
info->numframes = chd_get_header(chd)->totalhunks;
info->width = width;
info->height = height;
info->samplerate = rate;
info->channels = channels;
/* convert to an interlaced frame */
chdinterlaced = interlaced;
if (interlaced)
{
info->framerate /= 2;
info->numframes = (info->numframes + 1) / 2;
info->height *= 2;
}
return chd;
}
struct hard_disk_file *hard_disk_open(struct chd_file *chd)
{
int cylinders, heads, sectors, sectorbytes;
struct hard_disk_file *file;
char metadata[256];
UINT32 metatag;
UINT32 count;
/* punt if no CHD */
if (!chd)
return NULL;
/* read the hard disk metadata */
metatag = HARD_DISK_STANDARD_METADATA;
count = chd_get_metadata(chd, &metatag, 0, metadata, sizeof(metadata));
if (count == 0)
return NULL;
/* parse the metadata */
if (sscanf(metadata, HARD_DISK_METADATA_FORMAT, &cylinders, &heads, §ors, §orbytes) != 4)
return NULL;
/* allocate memory for the hard disk file */
file = malloc(sizeof(struct hard_disk_file));
if (!file)
return NULL;
/* fill in the data */
file->chd = chd;
file->info.cylinders = cylinders;
file->info.heads = heads;
file->info.sectors = sectors;
file->info.sectorbytes = sectorbytes;
file->hunksectors = chd_get_header(chd)->hunkbytes / file->info.sectorbytes;
file->cachehunk = -1;
/* allocate a cache */
file->cache = malloc(chd_get_header(chd)->hunkbytes);
if (!file->cache)
{
free(file);
return NULL;
}
return file;
}
hard_disk_file *hard_disk_open(chd_file *chd)
{
int cylinders, heads, sectors, sectorbytes;
hard_disk_file *file;
char metadata[256];
chd_error err;
/* punt if no CHD */
if (chd == NULL)
return NULL;
/* read the hard disk metadata */
err = chd_get_metadata(chd, HARD_DISK_METADATA_TAG, 0, metadata, sizeof(metadata), NULL, NULL, NULL);
if (err != CHDERR_NONE)
return NULL;
/* parse the metadata */
if (sscanf(metadata, HARD_DISK_METADATA_FORMAT, &cylinders, &heads, §ors, §orbytes) != 4)
return NULL;
/* allocate memory for the hard disk file */
file = (hard_disk_file *)malloc(sizeof(hard_disk_file));
if (file == NULL)
return NULL;
/* fill in the data */
file->chd = chd;
file->info.cylinders = cylinders;
file->info.heads = heads;
file->info.sectors = sectors;
file->info.sectorbytes = sectorbytes;
file->hunksectors = chd_get_header(chd)->hunkbytes / file->info.sectorbytes;
file->cachehunk = -1;
/* allocate a cache */
file->cache = (UINT8 *)malloc(chd_get_header(chd)->hunkbytes);
if (file->cache == NULL)
{
free(file);
return NULL;
}
return file;
}
bool CHDDisc::TryOpen(wchar* file)
{
chd_error err=chd_open(file,CHD_OPEN_READ,0,&chd);
if (err!=CHDERR_NONE)
return false;
const chd_header* head = chd_get_header(chd);
hunkbytes = head->hunkbytes;
hunk_mem = new u8[hunkbytes];
old_hunk=0xFFFFFFF;
sph = hunkbytes/(2352+96);
if (hunkbytes%(2352+96)!=0)
return false;
u32 tag;
u8 flags;
char temp[512];
u32 temp_len;
u32 total_frames=150;
u32 total_secs=0;
u32 total_hunks=0;
for(;;)
{
err=chd_get_metadata(chd,CDROM_TRACK_METADATA2_TAG,tracks.size(),temp,sizeof(temp),&temp_len,&tag,&flags);
if (err!=CHDERR_NONE)
break;
//"TRACK:%d TYPE:%s SUBTYPE:%s FRAMES:%d PREGAP:%d PGTYPE:%s PGSUB:%s POSTGAP:%d"
char type[64],subtype[32],pgtype[32],pgsub[32];
int tkid,frames,pregap,postgap;
sscanf(temp,CDROM_TRACK_METADATA2_FORMAT,&tkid,type,subtype,&frames,&pregap,pgtype,pgsub,&postgap);
if (tkid!=(tracks.size()+1) || (strcmp(type,"MODE1_RAW")!=0 && strcmp(type,"AUDIO")!=0) || strcmp(subtype,"NONE")!=0 || pregap!=0 || postgap!=0)
return false;
printf("%s\n",temp);
Track t;
t.StartFAD=total_frames;
total_frames+=frames;
t.EndFAD=total_frames-1;
t.ADDR=0;
t.CTRL=strcmp(type,"AUDIO")==0?0:4;
t.file = new CHDTrack(this,t.StartFAD,total_hunks);
total_hunks+=frames/sph;
if (frames%sph)
total_hunks++;
tracks.push_back(t);
}
if (total_frames!=549300 || tracks.size()<3)
return false;
FillGDSession();
return true;
}
