/* reading a stereo encoded ibuf (*left) and generating two ibufs from it (*left and *right) */
void IMB_ImBufFromStereo3d(
Stereo3dFormat *s3d, ImBuf *ibuf_stereo3d,
ImBuf **r_ibuf_left, ImBuf **r_ibuf_right)
{
Stereo3DData s3d_data = {{NULL}};
ImBuf *ibuf_left, *ibuf_right;
size_t width, height;
const bool is_float = (ibuf_stereo3d->rect_float != NULL);
IMB_stereo3d_read_dimensions(
s3d->display_mode, ((s3d->flag & S3D_SQUEEZED_FRAME) == 0), ibuf_stereo3d->x, ibuf_stereo3d->y,
&width, &height);
ibuf_left = IMB_allocImBuf(width, height, ibuf_stereo3d->planes, (is_float ? IB_rectfloat : IB_rect));
ibuf_right = IMB_allocImBuf(width, height, ibuf_stereo3d->planes, (is_float ? IB_rectfloat : IB_rect));
/* copy flags for IB_fields and other settings */
ibuf_left->flags = ibuf_stereo3d->flags;
ibuf_right->flags = ibuf_stereo3d->flags;
/* we always work with unsqueezed formats */
IMB_stereo3d_write_dimensions(
s3d->display_mode, ((s3d->flag & S3D_SQUEEZED_FRAME) == 0), ibuf_stereo3d->x, ibuf_stereo3d->y,
&width, &height);
imb_stereo3d_unsqueeze_ImBuf(ibuf_stereo3d, s3d, width, height);
imb_stereo3d_data_initialize(
&s3d_data, is_float, ibuf_left->x, ibuf_left->y, 4,
(int *)ibuf_left->rect, (int *)ibuf_right->rect, (int *)ibuf_stereo3d->rect,
ibuf_left->rect_float, ibuf_right->rect_float, ibuf_stereo3d->rect_float);
imb_stereo3d_read_doit(&s3d_data, s3d);
if (ibuf_stereo3d->flags & (IB_zbuf | IB_zbuffloat)) {
if (is_float) {
addzbuffloatImBuf(ibuf_left);
addzbuffloatImBuf(ibuf_right);
}
else {
addzbufImBuf(ibuf_left);
addzbufImBuf(ibuf_right);
}
imb_stereo3d_data_initialize(
&s3d_data, is_float, ibuf_left->x, ibuf_left->y, 1,
(int *)ibuf_left->zbuf, (int *)ibuf_right->zbuf, (int *)ibuf_stereo3d->zbuf,
ibuf_left->zbuf_float, ibuf_right->zbuf_float, ibuf_stereo3d->zbuf_float);
imb_stereo3d_read_doit(&s3d_data, s3d);
}
IMB_freeImBuf(ibuf_stereo3d);
*r_ibuf_left = ibuf_left;
*r_ibuf_right = ibuf_right;
}
/* question; why also add zbuf? */
bool imb_addrectImBuf(ImBuf *ibuf)
{
size_t size;
if (ibuf == NULL) return false;
/* don't call imb_freerectImBuf, it frees mipmaps, this call is used only too give float buffers display */
if (ibuf->rect && (ibuf->mall & IB_rect))
MEM_freeN(ibuf->rect);
ibuf->rect = NULL;
size = (size_t)ibuf->x * (size_t)ibuf->y * sizeof(unsigned int);
if ((ibuf->rect = MEM_mapallocN(size, __func__))) {
ibuf->mall |= IB_rect;
ibuf->flags |= IB_rect;
if (ibuf->planes > 32) {
return (addzbufImBuf(ibuf));
}
else {
return true;
}
}
return false;
}
ImBuf *IMB_allocImBuf(unsigned int x, unsigned int y, uchar planes, unsigned int flags)
{
ImBuf *ibuf;
ibuf = MEM_callocN(sizeof(ImBuf), "ImBuf_struct");
if (ibuf) {
ibuf->x = x;
ibuf->y = y;
ibuf->planes = planes;
ibuf->ftype = IMB_FTYPE_PNG;
ibuf->foptions.quality = 15; /* the 15 means, set compression to low ratio but not time consuming */
ibuf->channels = 4; /* float option, is set to other values when buffers get assigned */
ibuf->ppm[0] = ibuf->ppm[1] = IMB_DPI_DEFAULT / 0.0254f; /* IMB_DPI_DEFAULT -> pixels-per-meter */
if (flags & IB_rect) {
if (imb_addrectImBuf(ibuf) == false) {
IMB_freeImBuf(ibuf);
return NULL;
}
}
if (flags & IB_rectfloat) {
if (imb_addrectfloatImBuf(ibuf) == false) {
IMB_freeImBuf(ibuf);
return NULL;
}
}
if (flags & IB_zbuf) {
if (addzbufImBuf(ibuf) == false) {
IMB_freeImBuf(ibuf);
return NULL;
}
}
if (flags & IB_zbuffloat) {
if (addzbuffloatImBuf(ibuf) == false) {
IMB_freeImBuf(ibuf);
return NULL;
}
}
/* assign default spaces */
colormanage_imbuf_set_default_spaces(ibuf);
}
return (ibuf);
}
/* question; why also add zbuf? */
bool imb_addrectImBuf(ImBuf *ibuf)
{
if (ibuf == NULL) return false;
/* don't call imb_freerectImBuf, it frees mipmaps, this call is used only too give float buffers display */
if (ibuf->rect && (ibuf->mall & IB_rect))
MEM_freeN(ibuf->rect);
ibuf->rect = NULL;
if ((ibuf->rect = imb_alloc_pixels(ibuf->x, ibuf->y, 4, sizeof(unsigned char), __func__))) {
ibuf->mall |= IB_rect;
ibuf->flags |= IB_rect;
if (ibuf->planes > 32) {
return (addzbufImBuf(ibuf));
}
else {
return true;
}
}
return false;
}
