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#![allow(clippy::tabs_in_doc_comments)]
#![warn(rust_2018_idioms)]
#![deny(elided_lifetimes_in_paths, unreachable_pub)]
use rgb::RGBA8;
use rlottie::Surface;
use std::slice;
#[doc(no_inline)]
pub use rlottie::{Animation, Size};
#[cfg(any(feature = "gif", feature = "webp"))]
#[macro_use]
mod util;
mod convert;
use convert::{Convert, DummyConvert};
#[cfg(feature = "gif")]
mod gif;
#[cfg(feature = "gif")]
use gif::Convert2Gif;
#[cfg(feature = "webp")]
mod webp;
#[cfg(feature = "webp")]
use webp::Convert2Webp;
#[allow(dead_code)]
mod rgba_size {
use rgb::RGBA8;
use std::{marker::PhantomData, mem};
#[derive(Default)]
struct AssertSize<const N: usize>(PhantomData<[(); N]>);
impl<const N: usize> AssertSize<N> {
const fn new() -> Self {
Self(PhantomData)
}
}
impl AssertSize<4> {
const fn assert_size_u8_4(self) {}
}
const _: () = {
AssertSize::<{ mem::size_of::<RGBA8>() }>::new().assert_size_u8_4();
AssertSize::<{ mem::size_of::<[u8; 4]>() }>::new().assert_size_u8_4();
};
}
#[must_use = "A Converter does nothing unless you call .convert()"]
pub struct Converter<C: Convert> {
player: Animation,
size: Size,
convert: C
}
pub struct Builder {
player: Animation,
size: Size
}
impl Converter<DummyConvert> {
#[allow(clippy::new_ret_no_self)]
#[must_use]
pub fn new(player: Animation) -> Builder {
Builder {
size: player.size(),
player
}
}
}
impl Builder {
#[must_use]
pub fn with_size(mut self, size: Size) -> Self {
self.size = size;
self
}
}
#[cfg(feature = "gif")]
pub type Rgba = rgb::RGBA<u8, bool>;
#[cfg(feature = "gif")]
impl Builder {
pub fn gif<W: std::io::Write>(
self,
bg: Rgba,
out: W
) -> gif::Result<Converter<Convert2Gif<W>>> {
let framerate = self.player.framerate();
Ok(Converter {
player: self.player,
size: self.size,
convert: Convert2Gif::new(bg, out, self.size, framerate)?
})
}
}
#[cfg(feature = "webp")]
impl Builder {
pub fn webp(self) -> webp::Result<Converter<Convert2Webp>> {
let framerate = self.player.framerate();
Ok(Converter {
player: self.player,
size: self.size,
convert: Convert2Webp::new(self.size, framerate)?
})
}
}
impl<C: Convert> Converter<C> {
pub fn convert(mut self) -> Result<C::Out, C::Err> {
let buffer_len = self.size.width * self.size.height;
let mut surface = Surface::new(self.size);
let mut buffer = vec![RGBA8::default(); buffer_len];
let frame_count = self.player.totalframe();
for frame in 0 .. frame_count {
self.player.render(frame, &mut surface);
self.convert.convert_frame(surface.data(), &mut buffer);
let data = unsafe {
slice::from_raw_parts_mut(
buffer.as_mut_ptr() as *mut u8,
buffer_len * 4
)
};
self.convert.add_frame(data)?;
}
self.convert.finish()
}
}