diff options
Diffstat (limited to 'src/block/screendescriptor.rs')
-rw-r--r-- | src/block/screendescriptor.rs | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/src/block/screendescriptor.rs b/src/block/screendescriptor.rs deleted file mode 100644 index dc0257d..0000000 --- a/src/block/screendescriptor.rs +++ /dev/null @@ -1,79 +0,0 @@ -use std::convert::TryInto; - -pub struct ScreenDescriptor { - pub width: u16, - pub height: u16, - pub packed: u8, - pub background_color_index: u8, - pub pixel_aspect_ratio: u8, -} - -impl ScreenDescriptor { - pub fn new(width: u16, height: u16) -> Self { - Self { - width, - height, - packed: 0, - background_color_index: 0, - pixel_aspect_ratio: 0, - } - } - - pub fn set_color_table_present(&mut self, is_present: bool) { - if is_present { - self.packed |= 0b1000_0000; - } else { - self.packed &= 0b0111_1111; - } - } - - pub fn set_color_table_size(&mut self, size: u8) { - println!("scts: {}", size); - // GCT size is calulated by raising two to this number plus one, - // so we have to work backwards. - let size = (size as f32).log2().ceil() - 1f32; - self.packed |= size as u8; - } - - //TODO: Setter for sort flag in packed field - //TODO: Setter for color resolution in packed field - - pub fn color_table_present(&self) -> bool { - self.packed & 0b1000_0000 != 0 - } - - pub fn color_table_len(&self) -> usize { - crate::packed_to_color_table_length(self.packed & 0b0000_0111) - } -} - -impl From<&ScreenDescriptor> for Box<[u8]> { - fn from(lsd: &ScreenDescriptor) -> Self { - let mut vec = vec![]; - vec.extend_from_slice(&lsd.width.to_le_bytes()); - vec.extend_from_slice(&lsd.height.to_le_bytes()); - vec.push(lsd.packed); - vec.push(lsd.background_color_index); - vec.push(lsd.pixel_aspect_ratio); - - vec.into_boxed_slice() - } -} - -impl From<[u8; 7]> for ScreenDescriptor { - fn from(arr: [u8; 7]) -> Self { - let width = u16::from_le_bytes(arr[0..2].try_into().unwrap()); - let height = u16::from_le_bytes(arr[2..4].try_into().unwrap()); - let packed = arr[4]; - let background_color_index = arr[5]; - let pixel_aspect_ratio = arr[6]; - - Self { - width, - height, - packed, - background_color_index, - pixel_aspect_ratio, - } - } -} |