From 82904833f083a68f704037b983ce15355d40def4 Mon Sep 17 00:00:00 2001
From: oiupoyt <oiupoyt.cat@gmail.com>
Date: Wed, 2 Sep 2026 07:47:18 +0530
Subject: [PATCH] fix: Resolve Wayland EIO (-5) DMA-BUF to VAAPI mapping crash
 by passing DRM format modifiers

---
 src/capture/mod.rs            | 2 +-
 src/capture/wayland_stream.rs | 3 ++-
 src/encoder.rs                | 4 ++--
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/capture/mod.rs b/src/capture/mod.rs
index da4a777..0edaec7 100644
--- a/src/capture/mod.rs
+++ b/src/capture/mod.rs
@@ -12,7 +12,7 @@ pub enum Frame {
     DmaBuf {
         width: u32,
         height: u32,
-        format: u32,
+        format: u32, modifier: u64,
         fd: RawFd,
         stride: u32,
         offset: u32,
diff --git a/src/capture/wayland_stream.rs b/src/capture/wayland_stream.rs
index 6edbe0b..a2448d4 100644
--- a/src/capture/wayland_stream.rs
+++ b/src/capture/wayland_stream.rs
@@ -78,7 +78,8 @@ impl PipeWireStream {
                             let frame = Frame::DmaBuf {
                                 width: user_data.format.size().width,
                                 height: user_data.format.size().height,
-                                format: 0x34325241, // DRM_FORMAT_ARGB8888 
+                                format: 0x34325241, // DRM_FORMAT_ARGB8888
+                                modifier: user_data.format.modifier(), 
                                 fd: data.fd(),
                                 stride: data.chunk().stride() as u32,
                                 offset: data.chunk().offset(),
diff --git a/src/encoder.rs b/src/encoder.rs
index c8e861e..b3913ef 100644
--- a/src/encoder.rs
+++ b/src/encoder.rs
@@ -140,13 +140,13 @@ impl VaapiEncoder {
                     av_frame_free(&mut nv12_frame);
                     av_frame_free(&mut bgra_frame);
                 }
-                Frame::DmaBuf { width: dma_width, height: dma_height, format, fd, stride, offset } => {
+                Frame::DmaBuf { width: dma_width, height: dma_height, format, modifier, fd, stride, offset } => {
                     let mut drm_desc = AVDRMFrameDescriptor {
                         nb_objects: 1,
                         objects: [AVDRMObjectDescriptor {
                             fd: *fd,
                             size: 0, // usually ignored or mapped by driver
-                            format_modifier: 0, // DRM_FORMAT_MOD_LINEAR (or read from PipeWire format)
+                            format_modifier: *modifier,
                         }, std::mem::zeroed(), std::mem::zeroed(), std::mem::zeroed()],
                         nb_layers: 1,
                         layers: [AVDRMLayerDescriptor {