Mike-Solar
3be8c3e8fd
On multi-GPU boxes VAAPI's default render node can point at a device with no VA driver (NVIDIA without libva-nvidia-driver), failing before the working AMD/Intel node is ever tried; trying CUDA (NVDEC) first is both the discrete-GPU path and sidesteps that misdirection. VAAPI stays as the fallback for AMD/Intel-only machines. Adds a hwcheck example printing which hw device a stream opens with and the raw av_hwdevice_ctx_create result codes per device type.
45 lines
1.3 KiB
Rust
45 lines
1.3 KiB
Rust
// Temporary diagnostic: print the hardware decoder a video stream opens
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// with (None = software fallback).
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// Usage: hwcheck <mediafile> [stream_index]
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use oak_codec::decoder::{CodecStream, Decoder};
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use oak_codec::ffmpeg::FFmpegDecoder;
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fn probe(device_type: ffmpeg_next::ffi::AVHWDeviceType, name: &str) {
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let mut dev: *mut ffmpeg_next::ffi::AVBufferRef = std::ptr::null_mut();
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let rc = unsafe {
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ffmpeg_next::ffi::av_hwdevice_ctx_create(
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&mut dev,
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device_type,
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std::ptr::null(),
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std::ptr::null_mut(),
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0,
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)
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};
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eprintln!("{name}: av_hwdevice_ctx_create rc = {rc}");
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if rc >= 0 && !dev.is_null() {
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unsafe { ffmpeg_next::ffi::av_buffer_unref(&mut dev) };
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}
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}
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fn main() {
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ffmpeg_next::log::set_level(ffmpeg_next::log::Level::Debug);
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probe(
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ffmpeg_next::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_CUDA,
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"CUDA",
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);
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probe(
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ffmpeg_next::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_VAAPI,
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"VAAPI",
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);
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let args: Vec<String> = std::env::args().collect();
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if args.len() < 2 {
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return;
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}
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let stream: i32 = args.get(2).and_then(|s| s.parse().ok()).unwrap_or(0);
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let d = FFmpegDecoder::new();
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let s = CodecStream::with_block(args[1].clone(), stream, None);
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d.open(&s).expect("open video stream");
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println!("hw_decoder_name = {:?}", d.hw_decoder_name());
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}
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