ffmpeg_the_third/codec/decoder/
video.rs

1use std::ops::{Deref, DerefMut};
2
3#[cfg(not(feature = "ffmpeg_5_0"))]
4use crate::ffi::*;
5use libc::c_int;
6
7use super::{slice, Opened};
8use crate::codec::Context;
9use crate::color;
10#[cfg(not(feature = "ffmpeg_5_0"))]
11use crate::frame;
12use crate::util::chroma;
13use crate::util::format;
14#[cfg(not(feature = "ffmpeg_5_0"))]
15use crate::{packet, Error};
16use crate::{FieldOrder, Rational};
17
18pub struct Video(pub Opened);
19
20impl Video {
21    #[deprecated(
22        since = "4.4.0",
23        note = "Underlying API avcodec_decode_video2 has been deprecated since FFmpeg 3.1; \
24        consider switching to send_packet() and receive_frame()"
25    )]
26    #[cfg(not(feature = "ffmpeg_5_0"))]
27    pub fn decode<P: packet::Ref>(
28        &mut self,
29        packet: &P,
30        out: &mut frame::Video,
31    ) -> Result<bool, Error> {
32        unsafe {
33            let mut got: c_int = 0;
34
35            match avcodec_decode_video2(
36                self.as_mut_ptr(),
37                out.as_mut_ptr(),
38                &mut got,
39                packet.as_ptr(),
40            ) {
41                e if e < 0 => Err(Error::from(e)),
42                _ => Ok(got != 0),
43            }
44        }
45    }
46
47    pub fn width(&self) -> u32 {
48        unsafe { (*self.as_ptr()).width as u32 }
49    }
50
51    pub fn height(&self) -> u32 {
52        unsafe { (*self.as_ptr()).height as u32 }
53    }
54
55    pub fn format(&self) -> format::Pixel {
56        unsafe { format::Pixel::from((*self.as_ptr()).pix_fmt) }
57    }
58
59    pub fn has_b_frames(&self) -> bool {
60        unsafe { (*self.as_ptr()).has_b_frames != 0 }
61    }
62
63    pub fn aspect_ratio(&self) -> Rational {
64        unsafe { Rational::from((*self.as_ptr()).sample_aspect_ratio) }
65    }
66
67    pub fn color_space(&self) -> color::Space {
68        unsafe { color::Space::from((*self.as_ptr()).colorspace) }
69    }
70
71    pub fn color_range(&self) -> color::Range {
72        unsafe { color::Range::from((*self.as_ptr()).color_range) }
73    }
74
75    pub fn color_primaries(&self) -> color::Primaries {
76        unsafe { color::Primaries::from((*self.as_ptr()).color_primaries) }
77    }
78
79    pub fn color_transfer_characteristic(&self) -> color::TransferCharacteristic {
80        unsafe { color::TransferCharacteristic::from((*self.as_ptr()).color_trc) }
81    }
82
83    pub fn chroma_location(&self) -> chroma::Location {
84        unsafe { chroma::Location::from((*self.as_ptr()).chroma_sample_location) }
85    }
86
87    #[cfg(not(feature = "ffmpeg_7_0"))]
88    pub fn set_slice_count(&mut self, value: usize) {
89        unsafe {
90            (*self.as_mut_ptr()).slice_count = value as c_int;
91        }
92    }
93
94    pub fn set_slice_flags(&mut self, value: slice::Flags) {
95        unsafe {
96            (*self.as_mut_ptr()).slice_flags = value.bits();
97        }
98    }
99
100    pub fn skip_top(&mut self, value: usize) {
101        unsafe {
102            (*self.as_mut_ptr()).skip_top = value as c_int;
103        }
104    }
105
106    pub fn skip_bottom(&mut self, value: usize) {
107        unsafe {
108            (*self.as_mut_ptr()).skip_bottom = value as c_int;
109        }
110    }
111
112    pub fn references(&self) -> usize {
113        unsafe { (*self.as_ptr()).refs as usize }
114    }
115
116    pub fn set_field_order(&mut self, value: FieldOrder) {
117        unsafe {
118            (*self.as_mut_ptr()).field_order = value.into();
119        }
120    }
121
122    // intra_matrix
123    // inter_matrix
124
125    pub fn intra_dc_precision(&self) -> u8 {
126        unsafe { (*self.as_ptr()).intra_dc_precision as u8 }
127    }
128
129    pub fn max_bit_rate(&self) -> usize {
130        unsafe { (*self.as_ptr()).rc_max_rate as usize }
131    }
132}
133
134impl Deref for Video {
135    type Target = Opened;
136
137    fn deref(&self) -> &<Self as Deref>::Target {
138        &self.0
139    }
140}
141
142impl DerefMut for Video {
143    fn deref_mut(&mut self) -> &mut <Self as Deref>::Target {
144        &mut self.0
145    }
146}
147
148impl AsRef<Context> for Video {
149    fn as_ref(&self) -> &Context {
150        self
151    }
152}
153
154impl AsMut<Context> for Video {
155    fn as_mut(&mut self) -> &mut Context {
156        &mut self.0
157    }
158}
ffmpeg_the_third/codec/decoder/video.rs

ffmpeg_the_third/codec/decoder/
video.rs
