video_sys/
backend.rs

1use anyhow::{anyhow, Result};
2
3use crate::core::{FrameData, PixelFormat};
4use crate::h264::H264Config;
5use crate::mp4::EncodedSample;
6
7#[derive(Debug)]
8pub struct VideoFrame {
9    pub width: u32,
10    pub height: u32,
11    pub pts_us: i64,
12    pub format: PixelFormat,
13    /// Tight-packed pixels.
14    pub data: FrameData,
15}
16
17pub trait H264Decoder {
18    fn push(&mut self, sample: EncodedSample) -> Result<()>;
19    fn flush(&mut self) -> Result<()>;
20    fn try_receive(&mut self) -> Result<Option<VideoFrame>>;
21}
22
23pub fn create_default_h264_decoder(cfg: &H264Config) -> Result<Box<dyn H264Decoder>> {
24    #[cfg(target_os = "windows")]
25    {
26        return Ok(Box::new(mf::MfH264Decoder::new(cfg.clone())?));
27    }
28
29    #[cfg(any(target_os = "macos", target_os = "ios"))]
30    {
31        return Ok(Box::new(vt::VtH264Decoder::new(cfg.clone())?));
32    }
33
34    #[cfg(target_os = "android")]
35    {
36        return Ok(Box::new(mediacodec::AndroidH264Decoder::new(cfg.clone())?));
37    }
38
39    #[cfg(target_os = "linux")]
40    {
41        return Ok(Box::new(gst::GstH264Decoder::new(cfg.clone())?));
42    }
43
44    #[allow(unreachable_code)]
45    Err(anyhow!("no supported H.264 system decoder backend for this target"))
46}
47
48#[cfg(target_os = "linux")]
49mod gst;
50
51#[cfg(target_os = "windows")]
52mod mf;
53
54#[cfg(any(target_os = "macos", target_os = "ios"))]
55mod vt;
56
57#[cfg(target_os = "android")]
58mod mediacodec;
video_sys/backend.rs

video_sys/
backend.rs
