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use crate::{avcodec::AVCodecContext, ffi, shared::*};
use std::{clone::Clone, default::Default, ops::Drop};
wrap_ref_mut!(AVCodecParameters: ffi::AVCodecParameters);
impl AVCodecParameters {
pub fn new() -> Self {
let ptr = unsafe { ffi::avcodec_parameters_alloc() }
.upgrade()
.unwrap();
unsafe { Self::from_raw(ptr) }
}
/// Fill current codecpar based on the values from the supplied
/// [`AVCodecContext`]. Any allocated fields in this codecpar are freed and
/// replaced with duplicates of the corresponding fields in codec.
pub fn from_context(&mut self, context: &AVCodecContext) {
// only fails when no memory, so wrap.
unsafe { ffi::avcodec_parameters_from_context(self.as_mut_ptr(), context.as_ptr()) }
.upgrade()
.unwrap();
}
/// Copy the contents from another [`AVCodecParameters`]. Any allocated fields in dst are freed
/// and replaced with newly allocated duplicates of the corresponding fields
/// in src.
pub fn copy(&mut self, from: &Self) {
// `avcodec_parameters_copy()` ensures that destination pointer is
// dropped, so we can legally set `self.raw` here.
//
// Copy fails only on no memory, so unwrap.
unsafe { ffi::avcodec_parameters_copy(self.as_mut_ptr(), from.as_ptr()) }
.upgrade()
.unwrap();
}
}
impl Default for AVCodecParameters {
fn default() -> Self {
Self::new()
}
}
impl Clone for AVCodecParameters {
fn clone(&self) -> Self {
let mut parameters = AVCodecParameters::new();
parameters.copy(self);
parameters
}
}
impl Drop for AVCodecParameters {
fn drop(&mut self) {
let mut ptr = self.as_mut_ptr();
unsafe { ffi::avcodec_parameters_free(&mut ptr) }
}
}