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https://github.com/russelltg/wl-screenrec/commit/36b2c6f570f6
$ wl-screenrec
Opening libva device from DRM device /dev/dri/renderD128
[in @ 0x4909a9ab5400] Setting BufferSourceContext.pix_fmt to a HW format requires hw_frames_ctx to be non-NULL!
thread 'main' panicked at src/main.rs:1741:6:
called `Result::unwrap()` on an `Err` value: ffmpeg::Error(22: Invalid argument)
--- src/main.rs.orig 2024-08-04 17:10:34 UTC
+++ src/main.rs
@@ -27,8 +27,8 @@ use ffmpeg::{
ffi::{
av_buffer_ref, av_buffersrc_parameters_alloc, av_buffersrc_parameters_set,
av_dict_parse_string, av_free, av_get_pix_fmt_name, av_hwframe_map, avcodec_alloc_context3,
- avformat_query_codec, AVDRMFrameDescriptor, AVPixelFormat, AV_HWFRAME_MAP_WRITE,
- FF_COMPLIANCE_STRICT,
+ avfilter_graph_alloc_filter, avfilter_init_dict, avformat_query_codec,
+ AVDRMFrameDescriptor, AVPixelFormat, AV_HWFRAME_MAP_WRITE, FF_COMPLIANCE_STRICT,
},
filter,
format::{self, Pixel},
@@ -1728,19 +1728,19 @@ fn video_filter(
transform: Transform,
) -> (filter::Graph, Rational) {
let mut g = ffmpeg::filter::graph::Graph::new();
- g.add(
- &filter::find("buffer").unwrap(),
- "in",
- // format is bogus, will be replaced below, as we need to pass
- // hw_frames_ctx which isn't possible with args=
- &format!(
- "video_size=2840x2160:pix_fmt={}:time_base=1/1000000000",
- AVPixelFormat::AV_PIX_FMT_VAAPI as c_int
- ),
- )
- .unwrap();
+
+ // src
unsafe {
+ let buffersrc_ctx = avfilter_graph_alloc_filter(
+ g.as_mut_ptr(),
+ filter::find("buffer").unwrap().as_mut_ptr(),
+ c"in".as_ptr() as _,
+ );
+ if buffersrc_ctx.is_null() {
+ panic!("faield to alloc buffersrc filter");
+ }
+
let p = &mut *av_buffersrc_parameters_alloc();
p.width = capture_width;
@@ -1750,21 +1750,17 @@ fn video_filter(
p.time_base.den = 1_000_000_000;
p.hw_frames_ctx = inctx.as_mut_ptr();
- let sts = av_buffersrc_parameters_set(g.get("in").unwrap().as_mut_ptr(), p as *mut _);
+ let sts = av_buffersrc_parameters_set(buffersrc_ctx, p as *mut _);
assert_eq!(sts, 0);
-
av_free(p as *mut _ as *mut _);
+
+ let sts = avfilter_init_dict(buffersrc_ctx, null_mut());
+ assert_eq!(sts, 0);
}
+ // sink
g.add(&filter::find("buffersink").unwrap(), "out", "")
.unwrap();
-
- let mut out = g.get("out").unwrap();
-
- out.set_pixel_format(match pix_fmt {
- EncodePixelFormat::Vaapi(_) => Pixel::VAAPI,
- EncodePixelFormat::Sw(sw) => sw,
- });
let output_real_pixfmt_name = unsafe {
from_utf8_unchecked(
|
