Struct tiff::decoder::image::Image

pub(crate) struct Image {

    pub ifd: Option<Directory>,
    pub width: u32,
    pub height: u32,
    pub bits_per_sample: u8,
    pub samples: u16,
    pub sample_format: Vec<SampleFormat>,
    pub photometric_interpretation: PhotometricInterpretation,
    pub compression_method: CompressionMethod,
    pub predictor: Predictor,
    pub jpeg_tables: Option<Arc<Vec<u8>>>,
    pub chunk_type: ChunkType,
    pub planar_config: PlanarConfiguration,
    pub strip_decoder: Option<StripDecodeState>,
    pub tile_attributes: Option<TileAttributes>,
    pub chunk_offsets: Vec<u64>,
    pub chunk_bytes: Vec<u64>,
}

Fields

ifd: Option<Directory>

width: u32

height: u32

bits_per_sample: u8

samples: u16

sample_format: Vec<SampleFormat>

photometric_interpretation: PhotometricInterpretation

compression_method: CompressionMethod

predictor: Predictor

jpeg_tables: Option<Arc<Vec<u8>>>

chunk_type: ChunkType

planar_config: PlanarConfiguration

strip_decoder: Option<StripDecodeState>

tile_attributes: Option<TileAttributes>

chunk_offsets: Vec<u64>

chunk_bytes: Vec<u64>

Implementations

impl Image

pub fn from_reader<R: Read + Seek>( reader: &mut SmartReader<R>, ifd: Directory, limits: &Limits, bigtiff: bool, ) -> TiffResult<Image>

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

fn create_reader<'r, R: 'r + Read>( reader: R, photometric_interpretation: PhotometricInterpretation, compression_method: CompressionMethod, compressed_length: u64, jpeg_tables: Option<&[u8]>, ) -> TiffResult<Box<dyn Read + 'r>>

pub(crate) fn samples_per_pixel(&self) -> usize

Samples per pixel within chunk.

In planar config, samples are stored in separate strips/chunks, also called bands.

Example with bits_per_sample = [8, 8, 8] and PhotometricInterpretation::RGB:

• PlanarConfiguration::Chunky -> 3 (RGBRGBRGB…)
• PlanarConfiguration::Planar -> 1 (RRR…) (GGG…) (BBB…)

pub(crate) fn strips_per_pixel(&self) -> usize

Number of strips per pixel.

pub(crate) fn chunk_file_range(&self, chunk: u32) -> TiffResult<(u64, u64)>

pub(crate) fn chunk_dimensions(&self) -> TiffResult<(u32, u32)>

pub(crate) fn chunk_data_dimensions( &self, chunk_index: u32, ) -> TiffResult<(u32, u32)>

pub(crate) fn expand_chunk( &self, reader: impl Read, buffer: DecodingBuffer<'_>, output_width: usize, byte_order: ByteOrder, chunk_index: u32, limits: &Limits, ) -> TiffResult<()>

Trait Implementations

impl Debug for Image

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

Formats the value using the given formatter.