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Changelog

tinybmp is a no_std, low memory footprint BMP loading library for embedded applications.

Unreleased - ReleaseDate

Added

  • #55 Added methods CompressionMethod::is_compressed and Header::bytes_per_row. The latter is essential information when walking through the bytes yourself.

0.7.0 - 2026-01-14

Fixed

  • #50 Fixed handling of padding bytes in absolute mode for RLE4 compressed files.

Added

  • #51 Added RawBmp::colors method to iterator of the raw color values in a file.
  • #51 Added DynamicRawColors, RawColors, Rle4Colors, and Rle8Colors iterators.

Changed

  • (breaking) #49 Use 1.81 as the MSRV.
  • #46 Bmp::from_slice is now const, so BMPs can be put in consts and statics.
  • #47 Ignore compressed data length on RGB compression method.

0.6.0 - 2024-06-11

Added

  • #41 Added support for RLE8 and RLE4 encoded bitmaps.

Changed

  • (breaking) #41 Use 1.71 as the MSRV.

0.5.0 - 2023-05-17

Changed

  • (breaking) #39 Updated embedded-graphics dependency to 0.8.
  • (breaking) #39 Replaced Bmp::pixel method with embedded_graphics::image::GetPixel impl.

0.4.0 - 2022-09-30

Added

  • #28 Added a ColorTable struct and the RawBmp::color_table getter to access the BMP files color table.
  • #28 Added support for 4bpp images with color table.
  • #28 Added display example to display BMP images using the embedded-graphics simulator.
  • #34 Added Bmp::pixel and RawBmp::pixel to access individual pixels.

Changed

  • (breaking) #31 Use 1.61 as the MSRV.
  • (breaking) #28 Merged DynamicBmp and Bmp. Bmp will now automatically convert colors and doesn't require explicit color type annotations anymore.
  • (breaking) #28 Changed bounds for the Bmp color type from C: PixelColor + From<<C as PixelColor>::Raw> to C: PixelColor + From<Rgb555> + From<Rgb565> + From<Rgb888>.
  • (breaking) #28 Added additional ParseError variants for improved reporting of errors.
  • (breaking) #28 Removed RawBmp::size and RawBmp::color_bpp. Use RawBmp::header().image_size and RawBmp::header().bpp instead.
  • #28 Bpp::bits, RawBmp::image_data, RawBmp::header, and RawPixel::new are now const.
  • #28 BMP files with incomplete image data are now detected by Bmp::from_slice.

Fixed

  • #32 Report error for images with width <= 0 or height == 0 instead of causing a panic.

0.3.3 - 2022-04-18

Fixed

  • #25 Fixed a bug in the new color table support added in v0.3.2 where the color table length was incorrectly calculated.

0.3.2 - 2022-04-16

Added

  • #19 Added support for color mapped 1bpp and 8bpp images. This change now also requires 1bpp and 8bpp images to contain a color table.

0.3.1 - 2021-06-16

Changed

  • #13 Bump embedded-graphics minimum version from 0.7.0 to 0.7.1

0.3.0 - 2021-06-06

0.3.0-beta.2 - 2021-05-24

Changed

  • (breaking) #9 Added support for BMP images saved in top-down row order. A computed field row_order is added to the Header struct to capture whether the image data is ordered top-down, or the standard bottom-up.

0.3.0-beta.1 - 2021-05-24

0.3.0-alpha.1 - 2020-12-27

Changed

  • (breaking) #3 tinybmp now depends on embedded-graphics-core instead of embedded-graphics.

0.3.0-alpha.1 - embedded-graphics repository - 2020-12-27

Note: PR numbers from this point onwards are from the old embedded-graphics/embedded-graphics repository. New PR numbers above this note refer to PRs in the embedded-graphics/tinybmp repository.

Added

  • #453 DynamicBmp was added to load images with an unknown color format at compile time.

Changed

  • (breaking) #420 To support the new embedded-graphics 0.7 image API a color type parameter was added to Bmp.
  • (breaking) #444 The graphics feature was removed and the embedded-graphics dependency is now non optional.
  • (breaking) #444 Bmp no longer implements IntoIterator. Pixel iterators can now be created using the pixels methods.
  • (breaking) #444 Bmp::width and Bmp::height were replaced by Bmp::size which requires embedded_graphics::geometry::OriginDimensions to be in scope (also included in the embedded-graphics prelude).
  • (breaking) #444 Bmp::from_slice now checks if the image BPP matches the specified color type. To report possible errors it now returns the dedicated error type ParseError instead of ().
  • (breaking) #444 Bmp::bpp was renamed to Bmp::color_bpp to be consistent with tinytga and the return type was changed to an enum.
  • (breaking) #453 The methods to access the raw image data and header were moved to a new RawBmp type, which can be used on its own or can be accessed by using Bmp::as_raw or DynamicBmp::as_raw.

0.2.3 - 2020-05-26

Added

  • #352 Added support for decoding 1 bit pixel depth BMP images.

0.2.2 - 2020-03-20

0.2.1 - 2020-02-17

  • #244 Added .into_iter() support to the Bmp struct to get an iterator over every pixel in the image.

Changed

  • (breaking) #247 "reverse" integration of tinybmp into embedded-graphics. tinybmp now has a graphics feature that must be turned on to enable embedded-graphics support. The bmp feature from embedded-graphics is removed.

    Before

    Cargo.toml

    [dependencies]
embedded-graphics = { version = "0.6.0-alpha.3", features = [ "bmp" ]}

    Your code

    use embedded_graphics::prelude::*;
use embedded_graphics::image::ImageBmp;

let image = ImageBmp::new(include_bytes!("../../../assets/patch.bmp")).unwrap();
display.draw(&image);

    After

    Cargo.toml

    [dependencies]
embedded-graphics = "0.6.0"
tinybmp = { version = "*", features = [ "graphics" ]}

    Your code

    use embedded_graphics::{prelude::*, image::Image};
use tinybmp::Bmp;

let image = Bmp::new(include_bytes!("../../../assets/patch.bmp")).unwrap();
let image = Image::new(&image);
display.draw(&image);

0.1.1

Fixed

  • #218 Test README examples in CI and update them to work with latest crate versions.

Changed

  • #228 Upgraded to nom 5 internally. No user-facing changes.

0.1.0

Added

  • Release tinybmp crate to crates.io