Files
ffmpeg-the-third/src/codec/decoder/decoder.rs

131 lines
2.7 KiB
Rust

use std::ptr;
use std::ops::{Deref, DerefMut};
use ffi::*;
use codec::{Context, traits};
use super::{Opened, Video, Audio, Subtitle, Conceal, Check};
use ::{Error, Discard, Rational, Dictionary};
pub struct Decoder(pub Context);
impl Decoder {
pub fn open(mut self) -> Result<Opened, Error> {
unsafe {
match avcodec_open2(self.as_mut_ptr(), ptr::null(), ptr::null_mut()) {
0 => Ok(Opened(self)),
e => Err(Error::from(e))
}
}
}
pub fn open_as<D: traits::Decoder>(mut self, codec: D) -> Result<Opened, Error> {
unsafe {
if let Some(codec) = codec.decoder() {
match avcodec_open2(self.as_mut_ptr(), codec.as_ptr(), ptr::null_mut()) {
0 => Ok(Opened(self)),
e => Err(Error::from(e))
}
}
else {
Err(Error::DecoderNotFound)
}
}
}
pub fn open_as_with<D: traits::Decoder>(mut self, codec: D, options: Dictionary) -> Result<Opened, Error> {
unsafe {
if let Some(codec) = codec.decoder() {
let mut opts = options.disown();
let res = avcodec_open2(self.as_mut_ptr(), codec.as_ptr(), &mut opts);
Dictionary::own(opts);
match res {
0 => Ok(Opened(self)),
e => Err(Error::from(e))
}
}
else {
Err(Error::DecoderNotFound)
}
}
}
pub fn video(self) -> Result<Video, Error> {
if let Some(codec) = super::find(self.id()) {
self.open_as(codec).and_then(|o| o.video())
}
else {
Err(Error::DecoderNotFound)
}
}
pub fn audio(self) -> Result<Audio, Error> {
if let Some(codec) = super::find(self.id()) {
self.open_as(codec).and_then(|o| o.audio())
}
else {
Err(Error::DecoderNotFound)
}
}
pub fn subtitle(self) -> Result<Subtitle, Error> {
if let Some(codec) = super::find(self.id()) {
self.open_as(codec).and_then(|o| o.subtitle())
}
else {
Err(Error::DecoderNotFound)
}
}
pub fn conceal(&mut self, value: Conceal) {
unsafe {
(*self.as_mut_ptr()).error_concealment = value.bits();
}
}
pub fn check(&mut self, value: Check) {
unsafe {
(*self.as_mut_ptr()).err_recognition = value.bits();
}
}
pub fn skip_loop_filter(&mut self, value: Discard) {
unsafe {
(*self.as_mut_ptr()).skip_loop_filter = value.into();
}
}
pub fn skip_idct(&mut self, value: Discard) {
unsafe {
(*self.as_mut_ptr()).skip_idct = value.into();
}
}
pub fn skip_frame(&mut self, value: Discard) {
unsafe {
(*self.as_mut_ptr()).skip_frame = value.into();
}
}
pub fn time_base(&self) -> Rational {
unsafe {
Rational::from((*self.as_ptr()).time_base)
}
}
}
impl Deref for Decoder {
type Target = Context;
fn deref(&self) -> &<Self as Deref>::Target {
&self.0
}
}
impl DerefMut for Decoder {
fn deref_mut(&mut self) -> &mut<Self as Deref>::Target {
&mut self.0
}
}