Struct image::tiff::TIFFDecoder
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[src]
pub struct TIFFDecoder<R> where R: Read + Seek {
// some fields omitted
}
The representation of a PNG decoder
Currently does not support decoding of interlaced images
Methods
impl<R: Read + Seek> TIFFDecoder<R>
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fn new(r: R) -> ImageResult<TIFFDecoder<R>>
Create a new decoder that decodes from the stream r
fn init(self) -> ImageResult<TIFFDecoder<R>>
Initializes the decoder.
fn next_image(self) -> ImageResult<TIFFDecoder<R>>
Reads in the next image.
If there is no further image in the TIFF file a format error is return.
To determine whether there are more images call TIFFDecoder::more_images
instead.
fn more_images(&self) -> bool
Returns true
if there is at least one more image available.
fn byte_order(&self) -> ByteOrder
Returns the byte_order
fn read_short(&mut self) -> Result<u16, Error>
Reads a TIFF short value
fn read_long(&mut self) -> Result<u32, Error>
Reads a TIFF long value
fn read_offset(&mut self) -> Result<[u8; 4], Error>
Reads a TIFF IFA offset/value field
fn goto_offset(&mut self, offset: u32) -> Result<()>
Moves the cursor to the specified offset
Trait Implementations
impl<R: Debug> Debug for TIFFDecoder<R> where R: Read + Seek
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impl<R: Read + Seek> ImageDecoder for TIFFDecoder<R>
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fn dimensions(&mut self) -> ImageResult<(u32, u32)>
Returns a tuple containing the width and height of the image
fn colortype(&mut self) -> ImageResult<ColorType>
Returns the color type of the image e.g RGB(8) (8bit RGB)
fn row_len(&mut self) -> ImageResult<usize>
Returns the length in bytes of one decoded row of the image
fn read_scanline(&mut self, _: &mut [u8]) -> ImageResult<u32>
Reads one row from the image into buf and returns the row index
fn read_image(&mut self) -> ImageResult<DecodingResult>
Decodes the entire image and return it as a Vector
fn is_animated(&mut self) -> ImageResult<bool>
Returns true if the image is animated
fn into_frames(self) -> ImageResult<Frames>
Returns the frames of the image If the image is not animated it returns a single frame Read more
fn load_rect(&mut self, x: u32, y: u32, length: u32, width: u32) -> ImageResult<Vec<u8>>
Decodes a specific region of the image, represented by the rectangle starting from x
and y
and having length
and width
Read more