1 use std::ops::{Deref, DerefMut};
2 
3 use ffi::*;
4 use libc::c_int;
5 
6 use super::{slice, Opened};
7 use codec::Context;
8 use color;
9 use frame;
10 use util::chroma;
11 use util::format;
12 use {packet, Error, FieldOrder, Rational};
13 
14 pub struct Video(pub Opened);
15 
16 impl Video {
17     #[deprecated(
18         since = "4.4.0",
19         note = "Underlying API avcodec_decode_video2 has been deprecated since FFmpeg 3.1; \
20         consider switching to send_packet() and receive_frame()"
21     )]
decode<P: packet::Ref>( &mut self, packet: &P, out: &mut frame::Video, ) -> Result<bool, Error>22     pub fn decode<P: packet::Ref>(
23         &mut self,
24         packet: &P,
25         out: &mut frame::Video,
26     ) -> Result<bool, Error> {
27         unsafe {
28             let mut got: c_int = 0;
29 
30             match avcodec_decode_video2(
31                 self.as_mut_ptr(),
32                 out.as_mut_ptr(),
33                 &mut got,
34                 packet.as_ptr(),
35             ) {
36                 e if e < 0 => Err(Error::from(e)),
37                 _ => Ok(got != 0),
38             }
39         }
40     }
41 
width(&self) -> u3242     pub fn width(&self) -> u32 {
43         unsafe { (*self.as_ptr()).width as u32 }
44     }
45 
height(&self) -> u3246     pub fn height(&self) -> u32 {
47         unsafe { (*self.as_ptr()).height as u32 }
48     }
49 
format(&self) -> format::Pixel50     pub fn format(&self) -> format::Pixel {
51         unsafe { format::Pixel::from((*self.as_ptr()).pix_fmt) }
52     }
53 
has_b_frames(&self) -> bool54     pub fn has_b_frames(&self) -> bool {
55         unsafe { (*self.as_ptr()).has_b_frames != 0 }
56     }
57 
aspect_ratio(&self) -> Rational58     pub fn aspect_ratio(&self) -> Rational {
59         unsafe { Rational::from((*self.as_ptr()).sample_aspect_ratio) }
60     }
61 
color_space(&self) -> color::Space62     pub fn color_space(&self) -> color::Space {
63         unsafe { color::Space::from((*self.as_ptr()).colorspace) }
64     }
65 
color_range(&self) -> color::Range66     pub fn color_range(&self) -> color::Range {
67         unsafe { color::Range::from((*self.as_ptr()).color_range) }
68     }
69 
color_primaries(&self) -> color::Primaries70     pub fn color_primaries(&self) -> color::Primaries {
71         unsafe { color::Primaries::from((*self.as_ptr()).color_primaries) }
72     }
73 
color_transfer_characteristic(&self) -> color::TransferCharacteristic74     pub fn color_transfer_characteristic(&self) -> color::TransferCharacteristic {
75         unsafe { color::TransferCharacteristic::from((*self.as_ptr()).color_trc) }
76     }
77 
chroma_location(&self) -> chroma::Location78     pub fn chroma_location(&self) -> chroma::Location {
79         unsafe { chroma::Location::from((*self.as_ptr()).chroma_sample_location) }
80     }
81 
set_slice_count(&mut self, value: usize)82     pub fn set_slice_count(&mut self, value: usize) {
83         unsafe {
84             (*self.as_mut_ptr()).slice_count = value as c_int;
85         }
86     }
87 
set_slice_flags(&mut self, value: slice::Flags)88     pub fn set_slice_flags(&mut self, value: slice::Flags) {
89         unsafe {
90             (*self.as_mut_ptr()).slice_flags = value.bits();
91         }
92     }
93 
skip_top(&mut self, value: usize)94     pub fn skip_top(&mut self, value: usize) {
95         unsafe {
96             (*self.as_mut_ptr()).skip_top = value as c_int;
97         }
98     }
99 
skip_bottom(&mut self, value: usize)100     pub fn skip_bottom(&mut self, value: usize) {
101         unsafe {
102             (*self.as_mut_ptr()).skip_bottom = value as c_int;
103         }
104     }
105 
references(&self) -> usize106     pub fn references(&self) -> usize {
107         unsafe { (*self.as_ptr()).refs as usize }
108     }
109 
set_field_order(&mut self, value: FieldOrder)110     pub fn set_field_order(&mut self, value: FieldOrder) {
111         unsafe {
112             (*self.as_mut_ptr()).field_order = value.into();
113         }
114     }
115 
116     // intra_matrix
117     // inter_matrix
118 
intra_dc_precision(&self) -> u8119     pub fn intra_dc_precision(&self) -> u8 {
120         unsafe { (*self.as_ptr()).intra_dc_precision as u8 }
121     }
122 
max_bit_rate(&self) -> usize123     pub fn max_bit_rate(&self) -> usize {
124         unsafe { (*self.as_ptr()).rc_max_rate as usize }
125     }
126 }
127 
128 impl Deref for Video {
129     type Target = Opened;
130 
deref(&self) -> &<Self as Deref>::Target131     fn deref(&self) -> &<Self as Deref>::Target {
132         &self.0
133     }
134 }
135 
136 impl DerefMut for Video {
deref_mut(&mut self) -> &mut <Self as Deref>::Target137     fn deref_mut(&mut self) -> &mut <Self as Deref>::Target {
138         &mut self.0
139     }
140 }
141 
142 impl AsRef<Context> for Video {
as_ref(&self) -> &Context143     fn as_ref(&self) -> &Context {
144         self
145     }
146 }
147 
148 impl AsMut<Context> for Video {
as_mut(&mut self) -> &mut Context149     fn as_mut(&mut self) -> &mut Context {
150         &mut self.0
151     }
152 }
153