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use std::mem;
use std::ops::Deref;
use super::Chapter;
use ffi::*;
use format::context::common::Context;
use {Dictionary, DictionaryMut, Rational};
pub struct ChapterMut<'a> {
context: &'a mut Context,
index: usize,
immutable: Chapter<'a>,
}
impl<'a> ChapterMut<'a> {
pub unsafe fn wrap(context: &mut Context, index: usize) -> ChapterMut {
ChapterMut {
context: mem::transmute_copy(&context),
index,
immutable: Chapter::wrap(mem::transmute_copy(&context), index),
}
}
pub unsafe fn as_mut_ptr(&mut self) -> *mut AVChapter {
*(*self.context.as_mut_ptr()).chapters.add(self.index)
}
}
impl<'a> ChapterMut<'a> {
pub fn set_id(&mut self, value: i32) {
unsafe {
(*self.as_mut_ptr()).id = value;
}
}
pub fn set_time_base<R: Into<Rational>>(&mut self, value: R) {
unsafe {
(*self.as_mut_ptr()).time_base = value.into().into();
}
}
pub fn set_start(&mut self, value: i64) {
unsafe {
(*self.as_mut_ptr()).start = value;
}
}
pub fn set_end(&mut self, value: i64) {
unsafe {
(*self.as_mut_ptr()).end = value;
}
}
pub fn set_metadata<K: AsRef<str>, V: AsRef<str>>(&mut self, key: K, value: V) {
unsafe {
let mut dictionary = Dictionary::own(self.metadata().as_mut_ptr());
dictionary.set(key.as_ref(), value.as_ref());
(*self.as_mut_ptr()).metadata = dictionary.disown();
}
}
pub fn metadata(&mut self) -> DictionaryMut {
unsafe { DictionaryMut::wrap((*self.as_mut_ptr()).metadata) }
}
}
impl<'a> Deref for ChapterMut<'a> {
type Target = Chapter<'a>;
fn deref(&self) -> &Self::Target {
&self.immutable
}
}