components/mirroring: Disable H264 encoder on ChromeOS AMD

Chromecast fails to decode h264 streams encoded by the ChromeOS AMD
HW encoder. This CL disables the hardware encoder for the mirroring
use case as a temporarily workaround.

Bug: b:169533953
Test: chromecast works on kasumi
Change-Id: I6052a06ced2c432653abb46be34fcea61e13379e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2627241
Auto-Submit: Hirokazu Honda <hiroh@chromium.org>
Commit-Queue: mark a. foltz <mfoltz@chromium.org>
Reviewed-by: mark a. foltz <mfoltz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#844889}

components/mirroring/service/BUILD.gn

@@ -39,6 +39,7 @@ component("mirroring_service") {
   public_deps = [ "//base" ]
 
   deps = [
+    "//build:chromeos_buildflags",
     "//components/mirroring/mojom:service",
     "//components/openscreen_platform",
     "//components/openscreen_platform:openscreen_platform_network_service",

components/mirroring/service/session.cc

@@ -11,10 +11,12 @@
 #include <vector>
 
 #include "base/bind.h"
+#include "base/cpu.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/memory/unsafe_shared_memory_region.h"
 #include "base/metrics/histogram_macros.h"
+#include "base/no_destructor.h"
 #include "base/rand_util.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
@@ -27,6 +29,7 @@
 #include "base/time/time.h"
 #include "base/values.h"
 #include "build/build_config.h"
+#include "build/chromeos_buildflags.h"
 #include "components/mirroring/service/captured_audio_input.h"
 #include "components/mirroring/service/udp_socket_client.h"
 #include "components/mirroring/service/video_capture_client.h"
@@ -152,6 +155,15 @@ bool IsHardwareVP8EncodingSupported(
 bool IsHardwareH264EncodingSupported(
     const std::vector<media::VideoEncodeAccelerator::SupportedProfile>&
         profiles) {
+// TODO(b/169533953): Look into chromecast fails to decode bitstreams produced
+// by the AMD HW encoder.
+#if BUILDFLAG(IS_CHROMEOS_ASH) || BUILDFLAG(IS_CHROMEOS_LACROS)
+  static const base::NoDestructor<base::CPU> cpuid;
+  static const bool is_amd = cpuid->vendor_name() == "AuthenticAMD";
+  if (is_amd)
+    return false;
+#endif  // BUILDFLAG(IS_CHROMEOS_ASH) || BUILDFLAG(IS_CHROMEOS_LACROS)
+
 // TODO(crbug.com/1015482): Look into why H.264 hardware encoder on MacOS is
 // broken.
 // TODO(crbug.com/1015482): Look into HW encoder initialization issues on Win.