Enum ImageSource 

pub enum ImageSource<'a> {
    File(String),
    Memory(&'a [u8]),
    Url(String),
    Database(u64),
    NetworkStream(Vec<u8>),
}

#枚举图像数据的来源

Example

use e_utils::images::ImageSource;
fn test() -> Result<()> {
  let file_image = ImageSource::File("D:\\1.jpeg".to_string()).to_image()?;
  let (width, height) = file_image.dimensions();
  println!("Image dimensions (from file): {} x {}", width, height);
  let url_image = ImageSource::Url(
    "http://q5.itc.cn/q_70/images03/20240222/d442108f65694b5081b0e793208a704c.jpeg".to_string(),
  )
  .to_image()?;
  let (width, height) = file_image.dimensions();
  println!("Image dimensions (from Url): {} x {}", width, height);
  url_image.save("D:\\url.jpeg")?;
  Ok(())
}
fn test2() -> Result<()>{
  // 从内存中获取数据
  let image = unsafe { ImageSource::from_raw_parts(pic_buf_ptr, (*size_returned) as usize) }
    .to_image()
    .to_tauri()?;
  // 获取图片数据
  let base64 = ImageSource::image_to_base64(&image);
  let bytes = ImageSource::image_into_bytes(image.clone());
  let (ptr, len) = ImageSource::image_to_ptr(image).to_tauri()?;
  let image = unsafe { ImageSource::from_raw_parts(ptr, len) };
  Ok(())
}

Variants

File(String)

从文件加载图像，传入文件路径

Memory(&'a [u8])

从内存加载图像，传入图像数据的字节向量

Url(String)

从URL加载图像，传入URL地址

Database(u64)

从数据库加载图像，传入图像ID（假设）

NetworkStream(Vec<u8>)

从网络流加载图像，传入字节数据流

Implementations

impl<'a> ImageSource<'a>

pub fn to_image(self) -> Result<DynamicImage>

输出图像

pub const unsafe fn from_raw_parts<T>(buf_ptr: *const T, len: usize) -> &'a [T]

从指针获取数据

pub unsafe fn from_raw_parts_image<T>(buf_ptr: *const T, len: usize) -> Self

从指针获取数据

pub unsafe fn from_raw_parts_reader<T>( buf_ptr: *const T, len: usize, ) -> Result<Reader<Cursor<&'a [u8]>>>

从指针获取数据

pub unsafe fn from_raw_parts_base64<T>( buf_ptr: *const T, len: usize, ) -> Result<String>

从指针获取数据

pub fn to_ptr(self) -> Result<(*const u8, usize)>

转成指针和长度

pub fn image_write_bytes( image: &DynamicImage, iformat: ImageFormat, ) -> Result<Cursor<Vec<u8>>>

转数据

pub fn to_base64(self, iformat: ImageFormat) -> Result<String>

转Base64

pub fn image_to_base64( image: &DynamicImage, iformat: ImageFormat, ) -> Result<String>

转base64

pub fn image_to_ptr(image: DynamicImage) -> Result<(*const u8, usize)>

转成指针和长度

Trait Implementations

impl<'a> Debug for ImageSource<'a>

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

Formats the value using the given formatter.