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2025-12-28 18:19:16 +08:00
commit d143d158e4
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#[cfg(any(target_os = "windows", target_os = "linux", target_os = "macos"))]
use super::Priority;
use crate::common::TEST_TIMEOUT_MS;
use crate::ffmpeg::{init_av_log, AVHWDeviceType::*};
use crate::{
common::DataFormat::*,
ffmpeg::{AVHWDeviceType, AVPixelFormat},
ffmpeg_ram::{
ffmpeg_ram_decode, ffmpeg_ram_free_decoder, ffmpeg_ram_new_decoder, CodecInfo,
AV_NUM_DATA_POINTERS,
},
};
use log::error;
use std::{
ffi::{c_void, CString},
os::raw::c_int,
slice::from_raw_parts,
time::Instant,
vec,
};
#[derive(Debug, Clone)]
pub struct DecodeContext {
pub name: String,
pub device_type: AVHWDeviceType,
pub thread_count: i32,
}
pub struct DecodeFrame {
pub pixfmt: AVPixelFormat,
pub width: i32,
pub height: i32,
pub data: Vec<Vec<u8>>,
pub linesize: Vec<i32>,
pub key: bool,
}
impl std::fmt::Display for DecodeFrame {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let mut s = String::from("data:");
for data in self.data.iter() {
s.push_str(format!("{} ", data.len()).as_str());
}
s.push_str(", linesize:");
for linesize in self.linesize.iter() {
s.push_str(format!("{} ", linesize).as_str());
}
write!(
f,
"fixfmt:{}, width:{}, height:{},key:{}, {}",
self.pixfmt as i32, self.width, self.height, self.key, s,
)
}
}
pub struct Decoder {
codec: *mut c_void,
frames: *mut Vec<DecodeFrame>,
pub ctx: DecodeContext,
}
unsafe impl Send for Decoder {}
unsafe impl Sync for Decoder {}
impl Decoder {
pub fn new(ctx: DecodeContext) -> Result<Self, ()> {
init_av_log();
unsafe {
let codec = ffmpeg_ram_new_decoder(
CString::new(ctx.name.as_str()).map_err(|_| ())?.as_ptr(),
ctx.device_type as _,
ctx.thread_count,
Some(Decoder::callback),
);
if codec.is_null() {
return Err(());
}
Ok(Decoder {
codec,
frames: Box::into_raw(Box::new(Vec::<DecodeFrame>::new())),
ctx,
})
}
}
pub fn decode(&mut self, packet: &[u8]) -> Result<&mut Vec<DecodeFrame>, i32> {
unsafe {
(&mut *self.frames).clear();
let ret = ffmpeg_ram_decode(
self.codec,
packet.as_ptr(),
packet.len() as c_int,
self.frames as *const _ as *const c_void,
);
if ret < 0 {
Err(ret)
} else {
Ok(&mut *self.frames)
}
}
}
unsafe extern "C" fn callback(
obj: *const c_void,
width: c_int,
height: c_int,
pixfmt: c_int,
linesizes: *mut c_int,
datas: *mut *mut u8,
key: c_int,
) {
let frames = &mut *(obj as *mut Vec<DecodeFrame>);
let datas = from_raw_parts(datas, AV_NUM_DATA_POINTERS as _);
let linesizes = from_raw_parts(linesizes, AV_NUM_DATA_POINTERS as _);
let mut frame = DecodeFrame {
pixfmt: std::mem::transmute(pixfmt),
width,
height,
data: vec![],
linesize: vec![],
key: key != 0,
};
// Handle YUV420P and YUVJ420P (JPEG full-range) - same memory layout
if pixfmt == AVPixelFormat::AV_PIX_FMT_YUV420P as c_int
|| pixfmt == AVPixelFormat::AV_PIX_FMT_YUVJ420P as c_int
{
let y = from_raw_parts(datas[0], (linesizes[0] * height) as usize).to_vec();
let u = from_raw_parts(datas[1], (linesizes[1] * height / 2) as usize).to_vec();
let v = from_raw_parts(datas[2], (linesizes[2] * height / 2) as usize).to_vec();
frame.data.push(y);
frame.data.push(u);
frame.data.push(v);
frame.linesize.push(linesizes[0]);
frame.linesize.push(linesizes[1]);
frame.linesize.push(linesizes[2]);
frames.push(frame);
} else if pixfmt == AVPixelFormat::AV_PIX_FMT_YUV422P as c_int
|| pixfmt == AVPixelFormat::AV_PIX_FMT_YUVJ422P as c_int
{
// YUV422P: U and V planes have same height as Y (not half)
let y = from_raw_parts(datas[0], (linesizes[0] * height) as usize).to_vec();
let u = from_raw_parts(datas[1], (linesizes[1] * height) as usize).to_vec();
let v = from_raw_parts(datas[2], (linesizes[2] * height) as usize).to_vec();
frame.data.push(y);
frame.data.push(u);
frame.data.push(v);
frame.linesize.push(linesizes[0]);
frame.linesize.push(linesizes[1]);
frame.linesize.push(linesizes[2]);
frames.push(frame);
} else if pixfmt == AVPixelFormat::AV_PIX_FMT_NV12 as c_int
|| pixfmt == AVPixelFormat::AV_PIX_FMT_NV21 as c_int
{
let y = from_raw_parts(datas[0], (linesizes[0] * height) as usize).to_vec();
let uv = from_raw_parts(datas[1], (linesizes[1] * height / 2) as usize).to_vec();
frame.data.push(y);
frame.data.push(uv);
frame.linesize.push(linesizes[0]);
frame.linesize.push(linesizes[1]);
frames.push(frame);
} else {
error!("unsupported pixfmt {}", pixfmt as i32);
}
}
pub fn available_decoders() -> Vec<CodecInfo> {
use log::debug;
#[allow(unused_mut)]
let mut codecs: Vec<CodecInfo> = vec![];
// windows disable nvdec to avoid gpu stuck
#[cfg(target_os = "linux")]
{
let (nv, _, _) = crate::common::supported_gpu(false);
debug!("Linux GPU support detected - NV: {}", nv);
if nv {
codecs.push(CodecInfo {
name: "h264".to_owned(),
format: H264,
hwdevice: AV_HWDEVICE_TYPE_CUDA,
priority: Priority::Good as _,
..Default::default()
});
codecs.push(CodecInfo {
name: "hevc".to_owned(),
format: H265,
hwdevice: AV_HWDEVICE_TYPE_CUDA,
priority: Priority::Good as _,
..Default::default()
});
}
}
#[cfg(target_os = "windows")]
{
codecs.append(&mut vec![
CodecInfo {
name: "h264".to_owned(),
format: H264,
hwdevice: AV_HWDEVICE_TYPE_D3D11VA,
priority: Priority::Best as _,
..Default::default()
},
CodecInfo {
name: "hevc".to_owned(),
format: H265,
hwdevice: AV_HWDEVICE_TYPE_D3D11VA,
priority: Priority::Best as _,
..Default::default()
},
]);
}
#[cfg(target_os = "linux")]
{
codecs.append(&mut vec![
CodecInfo {
name: "h264".to_owned(),
format: H264,
hwdevice: AV_HWDEVICE_TYPE_VAAPI,
priority: Priority::Good as _,
..Default::default()
},
CodecInfo {
name: "hevc".to_owned(),
format: H265,
hwdevice: AV_HWDEVICE_TYPE_VAAPI,
priority: Priority::Good as _,
..Default::default()
},
CodecInfo {
name: "mjpeg".to_owned(),
format: MJPEG,
hwdevice: AV_HWDEVICE_TYPE_VAAPI,
priority: Priority::Good as _,
..Default::default()
},
]);
}
#[cfg(target_os = "macos")]
{
let (_, _, h264, h265) = crate::common::get_video_toolbox_codec_support();
debug!(
"VideoToolbox decode support - H264: {}, H265: {}",
h264, h265
);
if h264 {
codecs.push(CodecInfo {
name: "h264".to_owned(),
format: H264,
hwdevice: AV_HWDEVICE_TYPE_VIDEOTOOLBOX,
priority: Priority::Best as _,
..Default::default()
});
}
if h265 {
codecs.push(CodecInfo {
name: "hevc".to_owned(),
format: H265,
hwdevice: AV_HWDEVICE_TYPE_VIDEOTOOLBOX,
priority: Priority::Best as _,
..Default::default()
});
}
}
let mut res = Vec::<CodecInfo>::new();
let buf264 = &crate::common::DATA_H264_720P[..];
let buf265 = &crate::common::DATA_H265_720P[..];
for codec in codecs {
// Skip if this format already exists in results
if res
.iter()
.any(|existing: &CodecInfo| existing.format == codec.format)
{
continue;
}
debug!(
"Testing decoder: {} (hwdevice: {:?})",
codec.name, codec.hwdevice
);
let c = DecodeContext {
name: codec.name.clone(),
device_type: codec.hwdevice,
thread_count: 4,
};
match Decoder::new(c) {
Ok(mut decoder) => {
debug!("Decoder {} created successfully", codec.name);
// MJPEG decoder doesn't need test data - just verify it can be created
if codec.format == MJPEG {
debug!("MJPEG decoder {} test passed (creation only)", codec.name);
res.push(codec);
continue;
}
let data = match codec.format {
H264 => buf264,
H265 => buf265,
_ => {
log::error!("Unsupported format: {:?}, skipping", codec.format);
continue;
}
};
let start = Instant::now();
match decoder.decode(data) {
Ok(_) => {
let elapsed = start.elapsed().as_millis();
if elapsed < TEST_TIMEOUT_MS as _ {
debug!("Decoder {} test passed", codec.name);
res.push(codec);
} else {
debug!(
"Decoder {} test failed - timeout: {}ms",
codec.name, elapsed
);
}
}
Err(err) => {
debug!("Decoder {} test failed with error: {}", codec.name, err);
}
}
}
Err(_) => {
debug!("Failed to create decoder {}", codec.name);
}
}
}
let soft = CodecInfo::soft();
if let Some(c) = soft.h264 {
res.push(c);
}
if let Some(c) = soft.h265 {
res.push(c);
}
res
}
}
impl Drop for Decoder {
fn drop(&mut self) {
unsafe {
ffmpeg_ram_free_decoder(self.codec);
self.codec = std::ptr::null_mut();
let _ = Box::from_raw(self.frames);
}
}
}