static void load_frame_image_sequence(VoxelData *vd, Tex *tex)
{
ImBuf *ibuf;
Image *ima = tex->ima;
ImageUser *tiuser = &tex->iuser;
ImageUser iuser = *(tiuser);
int x = 0, y = 0, z = 0;
const float *rf;
if (!ima) return;
if (iuser.frames == 0) return;
ima->source = IMA_SRC_SEQUENCE;
iuser.framenr = 1 + iuser.offset;
/* find the first valid ibuf and use it to initialize the resolution of the data set */
/* need to do this in advance so we know how much memory to allocate */
ibuf = BKE_image_acquire_ibuf(ima, &iuser, NULL);
while (!ibuf && (iuser.framenr < iuser.frames)) {
iuser.framenr++;
ibuf = BKE_image_acquire_ibuf(ima, &iuser, NULL);
}
if (!ibuf) return;
if (!ibuf->rect_float) IMB_float_from_rect(ibuf);
vd->flag |= TEX_VD_STILL;
vd->resol[0] = ibuf->x;
vd->resol[1] = ibuf->y;
vd->resol[2] = iuser.frames;
vd->dataset = MEM_mapallocN(sizeof(float) * vd_resol_size(vd), "voxel dataset");
for (z = 0; z < iuser.frames; z++) {
/* get a new ibuf for each frame */
if (z > 0) {
iuser.framenr++;
BKE_image_release_ibuf(ima, ibuf, NULL);
ibuf = BKE_image_acquire_ibuf(ima, &iuser, NULL);
if (!ibuf) break;
if (!ibuf->rect_float) IMB_float_from_rect(ibuf);
}
rf = ibuf->rect_float;
for (y = 0; y < ibuf->y; y++) {
for (x = 0; x < ibuf->x; x++) {
/* currently averaged to monchrome */
vd->dataset[BLI_VOXEL_INDEX(x, y, z, vd->resol)] = (rf[0] + rf[1] + rf[2]) / 3.0f;
rf += 4;
}
}
BKE_image_free_anim_ibufs(ima, iuser.framenr);
}
BKE_image_release_ibuf(ima, ibuf, NULL);
vd->ok = 1;
return;
}
static void image_freecache_cb(bContext *C, void *ima_v, void *unused)
{
Scene *scene = CTX_data_scene(C);
BKE_image_free_anim_ibufs(ima_v, scene->r.cfra);
WM_event_add_notifier(C, NC_IMAGE, ima_v);
}