Struct gif::Reader
[−]
[src]
pub struct Reader<R: Read> { /* fields omitted */ }
GIF decoder
Methods
impl<R> Reader<R> where
R: Read, [src]
R: Read,
pub fn next_frame_info(
&mut self
) -> Result<Option<&Frame<'static>>, DecodingError>[src]
&mut self
) -> Result<Option<&Frame<'static>>, DecodingError>
Returns the next frame info
pub fn read_next_frame(
&mut self
) -> Result<Option<&Frame<'static>>, DecodingError>[src]
&mut self
) -> Result<Option<&Frame<'static>>, DecodingError>
Reads the next frame from the image.
Do not call Self::next_frame_info beforehand.
Deinterlaces the result.
pub fn read_into_buffer(&mut self, buf: &mut [u8]) -> Result<(), DecodingError>[src]
Reads the data of the current frame into a pre-allocated buffer.
Self::next_frame_info needs to be called beforehand.
The length of buf must be at least Self::buffer_size.
Deinterlaces the result.
pub fn fill_buffer(&mut self, buf: &mut [u8]) -> Result<bool, DecodingError>[src]
Reads data of the current frame into a pre-allocated buffer until the buffer has been filled completely.
Self::next_frame_info needs to be called beforehand. Returns true if the supplied
buffer could be filled completely. Should not be called after false had been returned.
pub fn buffer_size(&self) -> usize[src]
Output buffer size
pub fn line_length(&self) -> usize[src]
Line length of the current frame
pub fn palette(&self) -> Result<&[u8], DecodingError>[src]
Returns the color palette relevant for the current (next) frame
pub fn global_palette(&self) -> Option<&[u8]>[src]
The global color palette
pub fn width(&self) -> u16[src]
Width of the image
pub fn height(&self) -> u16[src]
Height of the image
pub fn bg_color(&self) -> Option<usize>[src]
Index of the background color in the global palette