1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98
use super::{Audio, Decoder, Subtitle, Video}; use crate::codec::{Context, Profile}; use crate::ffi::*; use crate::media; use crate::{Error, Rational}; use std::ops::{Deref, DerefMut}; pub struct Opened(pub Decoder); impl Opened { pub fn video(self) -> Result<Video, Error> { if self.medium() == media::Type::Video { Ok(Video(self)) } else { Err(Error::InvalidData) } } pub fn audio(self) -> Result<Audio, Error> { if self.medium() == media::Type::Audio { Ok(Audio(self)) } else { Err(Error::InvalidData) } } pub fn subtitle(self) -> Result<Subtitle, Error> { if self.medium() == media::Type::Subtitle { Ok(Subtitle(self)) } else { Err(Error::InvalidData) } } pub fn bit_rate(&self) -> usize { unsafe { (*self.as_ptr()).bit_rate as usize } } pub fn delay(&self) -> usize { unsafe { (*self.as_ptr()).delay as usize } } pub fn profile(&self) -> Profile { unsafe { Profile::from((self.id(), (*self.as_ptr()).profile)) } } pub fn frame_rate(&self) -> Option<Rational> { unsafe { let value = (*self.as_ptr()).framerate; if value == (AVRational { num: 0, den: 1 }) { None } else { Some(Rational::from(value)) } } } pub fn flush(&mut self) { unsafe { avcodec_flush_buffers(self.as_mut_ptr()); } } } impl Drop for Opened { fn drop(&mut self) { unsafe { avcodec_close(self.as_mut_ptr()); } } } impl Deref for Opened { type Target = Decoder; fn deref(&self) -> &<Self as Deref>::Target { &self.0 } } impl DerefMut for Opened { fn deref_mut(&mut self) -> &mut <Self as Deref>::Target { &mut self.0 } } impl AsRef<Context> for Opened { fn as_ref(&self) -> &Context { self } } impl AsMut<Context> for Opened { fn as_mut(&mut self) -> &mut Context { &mut self.0 } }