Bit image from bytes

[ldicocco]

In some applications an image is not retrieved from a file, but from something like rust_embed or base64, so a possibility to print an image from bytes is useful.

[fabienbellanger]

@ldicocco could you add a test for bit_image_from_bytes method in protocol.rs please?

[fabienbellanger]

I try this:

#[cfg(feature = "graphics")]
#[test]
fn test_bit_image_from_bytes() {
    let protocol = Protocol::new(Encoder::default());
    let img = image::open("./resources/images/small.jpg").unwrap();

    assert_eq!(
        protocol
            .bit_image_from_bytes(
                img.as_bytes(),
                BitImageOption::new(None, None, BitImageSize::default()).unwrap(),
            )
            .unwrap(),
        vec![
            29, 118, 48, 0, 2, 0, 16, 0, 1, 128, 1, 128, 1, 128, 1, 128, 1, 128, 1, 128, 1, 128, 255, 255, 255,
            255, 1, 128, 1, 128, 1, 128, 1, 128, 1, 128, 1, 128, 1, 128
        ]
    );
}

But I have this error Result::unwrap() on an Err value: Io("The image format could not be determined")`.

Would you have an example?

[ldicocco]

img.as_bytes() gives bytes that are different from the ones in the original file. I'll do a PR with the test rewritten to use the raw file content.

On Mon, Feb 26, 2024 at 11:40 AM Fabien @.***> wrote:

I try this:

[cfg(feature = "graphics")]#[test]fn test_bit_image_from_bytes() {

let protocol = Protocol::new(Encoder::default());
let img = image::open("./resources/images/small.jpg").unwrap();

assert_eq!(
    protocol
        .bit_image_from_bytes(
            img.as_bytes(),
            BitImageOption::new(None, None, BitImageSize::default()).unwrap(),
        )
        .unwrap(),
    vec![
        29, 118, 48, 0, 2, 0, 16, 0, 1, 128, 1, 128, 1, 128, 1, 128, 1, 128, 1, 128, 1, 128, 255, 255, 255,
        255, 1, 128, 1, 128, 1, 128, 1, 128, 1, 128, 1, 128, 1, 128
    ]
);}

But I have this error Result::unwrap() on an Err value: Io("The image format could not be determined")`.

Would you have an example?

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