Struct tiff::decoder::Decoder

pub struct Decoder<R>
where
    R: Read + Seek,
{ /* private fields */ }

The representation of a TIFF decoder

Currently does not support decoding of interlaced images

Implementations

impl<R: Read + Seek> Decoder<R>

pub fn new(r: R) -> TiffResult<Decoder<R>>

Create a new decoder that decodes from the stream r

pub fn with_limits(self, limits: Limits) -> Decoder<R>

pub fn dimensions(&mut self) -> TiffResult<(u32, u32)>

pub fn colortype(&mut self) -> TiffResult<ColorType>

pub fn init(self) -> TiffResult<Decoder<R>>

Initializes the decoder.

pub fn next_image(&mut self) -> TiffResult<()>

Reads in the next image. If there is no further image in the TIFF file a format error is returned. To determine whether there are more images call TIFFDecoder::more_images instead.

pub fn more_images(&self) -> bool

Returns true if there is at least one more image available.

pub fn byte_order(&self) -> ByteOrder

Returns the byte_order

pub fn read_ifd_offset(&mut self) -> Result<u64, Error>

pub fn read_byte(&mut self) -> Result<u8, Error>

Reads a TIFF byte value

pub fn read_short(&mut self) -> Result<u16, Error>

Reads a TIFF short value

pub fn read_sshort(&mut self) -> Result<i16, Error>

Reads a TIFF sshort value

pub fn read_long(&mut self) -> Result<u32, Error>

Reads a TIFF long value

pub fn read_slong(&mut self) -> Result<i32, Error>

Reads a TIFF slong value

pub fn read_float(&mut self) -> Result<f32, Error>

Reads a TIFF float value

pub fn read_double(&mut self) -> Result<f64, Error>

Reads a TIFF double value

pub fn read_long8(&mut self) -> Result<u64, Error>

pub fn read_string(&mut self, length: usize) -> TiffResult<String>

Reads a string

pub fn read_offset(&mut self) -> TiffResult<[u8; 4]>

Reads a TIFF IFA offset/value field

pub fn read_offset_u64(&mut self) -> Result<[u8; 8], Error>

Reads a TIFF IFA offset/value field

pub fn goto_offset(&mut self, offset: u32) -> Result<()>

Moves the cursor to the specified offset

pub fn goto_offset_u64(&mut self, offset: u64) -> Result<()>

pub fn find_tag(&mut self, tag: Tag) -> TiffResult<Option<Value>>

Tries to retrieve a tag. Return Ok(None) if the tag is not present.

pub fn find_tag_unsigned<T: TryFrom<u64>>( &mut self, tag: Tag, ) -> TiffResult<Option<T>>

Tries to retrieve a tag and convert it to the desired unsigned type.

pub fn find_tag_unsigned_vec<T: TryFrom<u64>>( &mut self, tag: Tag, ) -> TiffResult<Option<Vec<T>>>

Tries to retrieve a vector of all a tag’s values and convert them to the desired unsigned type.

pub fn get_tag_unsigned<T: TryFrom<u64>>(&mut self, tag: Tag) -> TiffResult<T>

Tries to retrieve a tag and convert it to the desired unsigned type. Returns an error if the tag is not present.

pub fn get_tag(&mut self, tag: Tag) -> TiffResult<Value>

Tries to retrieve a tag. Returns an error if the tag is not present

pub fn get_tag_u32(&mut self, tag: Tag) -> TiffResult<u32>

Tries to retrieve a tag and convert it to the desired type.

pub fn get_tag_u64(&mut self, tag: Tag) -> TiffResult<u64>

pub fn get_tag_f32(&mut self, tag: Tag) -> TiffResult<f32>

Tries to retrieve a tag and convert it to the desired type.

pub fn get_tag_f64(&mut self, tag: Tag) -> TiffResult<f64>

Tries to retrieve a tag and convert it to the desired type.

pub fn get_tag_u32_vec(&mut self, tag: Tag) -> TiffResult<Vec<u32>>

Tries to retrieve a tag and convert it to the desired type.

pub fn get_tag_u16_vec(&mut self, tag: Tag) -> TiffResult<Vec<u16>>

pub fn get_tag_u64_vec(&mut self, tag: Tag) -> TiffResult<Vec<u64>>

pub fn get_tag_f32_vec(&mut self, tag: Tag) -> TiffResult<Vec<f32>>

Tries to retrieve a tag and convert it to the desired type.

pub fn get_tag_f64_vec(&mut self, tag: Tag) -> TiffResult<Vec<f64>>

Tries to retrieve a tag and convert it to the desired type.

pub fn get_tag_u8_vec(&mut self, tag: Tag) -> TiffResult<Vec<u8>>

Tries to retrieve a tag and convert it to a 8bit vector.

pub fn get_tag_ascii_string(&mut self, tag: Tag) -> TiffResult<String>

Tries to retrieve a tag and convert it to a ascii vector.

pub fn strip_count(&mut self) -> TiffResult<u32>

Number of strips in image

pub fn read_jpeg(&mut self) -> TiffResult<DecodingResult>

pub fn read_strip_to_buffer( &mut self, buffer: DecodingBuffer<'_>, ) -> TiffResult<()>

pub fn read_strip(&mut self) -> TiffResult<DecodingResult>

Read a single strip from the image and return it as a Vector

pub fn read_image(&mut self) -> TiffResult<DecodingResult>

Decodes the entire image and return it as a Vector

Trait Implementations

impl<R> Debug for Decoder<R>

where R: Read + Seek + Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.