impl Kernel for PackKernel {
fn init(&mut self, in_fmt: &ScaleInfo, dest_fmt: &ScaleInfo) -> ScaleResult<NABufferType> {
- self.ncomps = in_fmt.fmt.components as usize;
+ self.ncomps = in_fmt.fmt.components.min(dest_fmt.fmt.components) as usize;
for i in 0..self.ncomps {
let ichr = in_fmt.fmt.comp_info[i].unwrap();
let ochr = dest_fmt.fmt.comp_info[i].unwrap();
impl Kernel for UnpackKernel {
fn init(&mut self, in_fmt: &ScaleInfo, dest_fmt: &ScaleInfo) -> ScaleResult<NABufferType> {
- self.ncomps = in_fmt.fmt.components as usize;
+ self.ncomps = in_fmt.fmt.components.min(dest_fmt.fmt.components) as usize;
let mut chr: Vec<Option<NAPixelChromaton>> = Vec::with_capacity(MAX_CHROMATONS);
for i in 0..self.ncomps {
let ichr = in_fmt.fmt.comp_info[i].unwrap();
chr.push(Some(dchr));
}
let mut df = in_fmt.fmt;
- for i in 0..self.ncomps {
- df.comp_info[i] = chr[i];
- }
+ df.comp_info[..self.ncomps].clone_from_slice(&chr[..self.ncomps]);
+ df.components = self.ncomps as u8;
+ df.palette = false;
println!(" [intermediate format {}]", df);
let res = alloc_video_buffer(NAVideoInfo::new(in_fmt.width, in_fmt.height, false, df), 3);
if res.is_err() { return Err(ScaleError::AllocError); }
}
let mut df = in_fmt.fmt;
df.palette = false;
- for i in 0..self.ncomps {
- df.comp_info[i] = chr[i];
- }
+ df.comp_info[..self.ncomps].clone_from_slice(&chr[..self.ncomps]);
println!(" [intermediate format {}]", df);
let res = alloc_video_buffer(NAVideoInfo::new(in_fmt.width, in_fmt.height, false, df), 3);
if res.is_err() { return Err(ScaleError::AllocError); }