fix compile for arm64.

Author: cloudwebrtc

webrtc-sys/build.rs

@@ -110,6 +110,7 @@ fn main() {
     println!("cargo:rustc-link-lib=static=webrtc");
 
     let target_os = env::var("CARGO_CFG_TARGET_OS").unwrap();
+    let target_arch = env::var("CARGO_CFG_TARGET_ARCH").unwrap();
     match target_os.as_str() {
         "windows" => {
             println!("cargo:rustc-link-lib=dylib=msdmo");
@@ -152,16 +153,23 @@ fn main() {
             println!("cargo:rustc-link-lib=dylib=pthread");
             println!("cargo:rustc-link-lib=dylib=m");
 
-            builder
-                .file("src/vaapi/vaapi_display_drm.cpp")
-                .file("src/vaapi/vaapi_h264_encoder_wrapper.cpp")
-                .file("src/vaapi/vaapi_encoder_factory.cpp")
-                .file("src/vaapi/h264_encoder_impl.cpp")
-                .file("src/vaapi/implib/libva-drm.so.init.c")
-                .file("src/vaapi/implib/libva-drm.so.tramp.S")
-                .file("src/vaapi/implib/libva.so.init.c")
-                .file("src/vaapi/implib/libva.so.tramp.S")
-                .flag("-std=c++2a");
+            match target_arch.as_str() {
+                "x86_64" => {
+                   builder
+                        .file("src/vaapi/vaapi_display_drm.cpp")
+                        .file("src/vaapi/vaapi_h264_encoder_wrapper.cpp")
+                        .file("src/vaapi/vaapi_encoder_factory.cpp")
+                        .file("src/vaapi/h264_encoder_impl.cpp")
+                        .file("src/vaapi/implib/libva-drm.so.init.c")
+                        .file("src/vaapi/implib/libva-drm.so.tramp.S")
+                        .file("src/vaapi/implib/libva.so.init.c")
+                        .file("src/vaapi/implib/libva.so.tramp.S");
+                }
+                _ => {},
+                
+            }
+
+            builder.flag("-std=c++2a");
         }
         "macos" => {
             println!("cargo:rustc-link-lib=framework=Foundation");

webrtc-sys/src/video_encoder_factory.cpp

@@ -37,7 +37,7 @@
 #include "livekit/android.h"
 #endif
 
-#if defined(__linux__)
+#if defined(__linux__) && defined(__x86_64__)
 #include "vaapi/vaapi_encoder_factory.h"
 #endif
 
@@ -62,7 +62,7 @@ VideoEncoderFactory::InternalFactory::InternalFactory() {
   factories_.push_back(CreateAndroidVideoEncoderFactory());
 #endif
 
-#if defined(__linux__)
+#if defined(__linux__) && defined(__x86_64__)
   if (webrtc::VAAPIVideoEncoderFactory::IsSupported()) {
     factories_.push_back(std::make_unique<webrtc::VAAPIVideoEncoderFactory>());
   }