static ImBuf *loadblend_thumb(gzFile gzfile)
{
char buf[12];
int bhead[24/sizeof(int)]; /* max size on 64bit */
char endian, pointer_size;
char endian_switch;
int sizeof_bhead ;
/* read the blend file header */
if(gzread(gzfile, buf, 12) != 12)
return NULL;
if(strncmp(buf, "BLENDER", 7))
return NULL;
if(buf[7]=='-')
pointer_size= 8;
else if(buf[7]=='_')
pointer_size= 4;
else
return NULL;
sizeof_bhead = 16 + pointer_size;
if(buf[8]=='V')
endian= B_ENDIAN; /* big: PPC */
else if(buf[8]=='v')
endian= L_ENDIAN; /* little: x86 */
else
return NULL;
endian_switch = ((ENDIAN_ORDER != endian)) ? 1 : 0;
while(gzread(gzfile, bhead, sizeof_bhead) == sizeof_bhead) {
if(endian_switch)
SWITCH_INT(bhead[1]); /* length */
if (bhead[0]==REND) {
gzseek(gzfile, bhead[1], SEEK_CUR); /* skip to the next */
}
else {
break;
}
}
/* using 'TEST' since new names segfault when loading in old blenders */
if(bhead[0] == TEST) {
ImBuf *img= NULL;
int size[2];
if(gzread(gzfile, size, sizeof(size)) != sizeof(size))
return NULL;
if(endian_switch) {
SWITCH_INT(size[0]);
SWITCH_INT(size[1]);
}
/* length */
bhead[1] -= sizeof(int) * 2;
/* inconsistent image size, quit early */
if(bhead[1] != size[0] * size[1] * sizeof(int))
return NULL;
/* finally malloc and read the data */
img= IMB_allocImBuf(size[0], size[1], 32, IB_rect | IB_metadata);
if(gzread(gzfile, img->rect, bhead[1]) != bhead[1]) {
IMB_freeImBuf(img);
img= NULL;
}
return img;
}
return NULL;
}
struct anim_index *IMB_indexer_open(const char *name)
{
char header[13];
struct anim_index *idx;
FILE *fp = BLI_fopen(name, "rb");
int i;
if (!fp) {
return NULL;
}
if (fread(header, 12, 1, fp) != 1) {
fclose(fp);
return NULL;
}
header[12] = 0;
if (memcmp(header, magic, 8) != 0) {
fclose(fp);
return NULL;
}
if (atoi(header + 9) != INDEX_FILE_VERSION) {
fclose(fp);
return NULL;
}
idx = MEM_callocN(sizeof(struct anim_index), "anim_index");
BLI_strncpy(idx->name, name, sizeof(idx->name));
fseek(fp, 0, SEEK_END);
idx->num_entries = (ftell(fp) - 12) /
(sizeof(int) + /* framepos */
sizeof(unsigned long long) + /* seek_pos */
sizeof(unsigned long long) + /* seek_pos_dts */
sizeof(unsigned long long) /* pts */
);
fseek(fp, 12, SEEK_SET);
idx->entries = MEM_callocN(sizeof(struct anim_index_entry) *
idx->num_entries, "anim_index_entries");
for (i = 0; i < idx->num_entries; i++) {
fread(&idx->entries[i].frameno,
sizeof(int), 1, fp);
fread(&idx->entries[i].seek_pos,
sizeof(unsigned long long), 1, fp);
fread(&idx->entries[i].seek_pos_dts,
sizeof(unsigned long long), 1, fp);
fread(&idx->entries[i].pts,
sizeof(unsigned long long), 1, fp);
}
if (((ENDIAN_ORDER == B_ENDIAN) != (header[8] == 'V'))) {
for (i = 0; i < idx->num_entries; i++) {
SWITCH_INT(idx->entries[i].frameno);
SWITCH_INT64(idx->entries[i].seek_pos);
SWITCH_INT64(idx->entries[i].seek_pos_dts);
SWITCH_INT64(idx->entries[i].pts);
}
}
fclose(fp);
return idx;
}
