Bug 1747196 - Build the Web MIDI midir backend only on known supported platforms rather than excluding unsupported ones r=glandium

Differential Revision: https://phabricator.services.mozilla.com/D134491

Cargo.lock

@@ -2020,7 +2020,6 @@ dependencies = [
  "log",
  "mapped_hyph",
  "mdns_service",
- "midir",
  "midir_impl",
  "mozurl",
  "mp4parse_capi",

dom/midi/MIDIPlatformService.cpp

@@ -7,9 +7,9 @@
 #include "MIDIPlatformService.h"
 #include "MIDIMessageQueue.h"
 #include "TestMIDIPlatformService.h"
-#ifndef MOZ_WIDGET_ANDROID
+#ifdef MOZ_WEBMIDI_MIDIR_IMPL
 #  include "midirMIDIPlatformService.h"
-#endif  // MOZ_WIDGET_ANDROID
+#endif  // MOZ_WEBMIDI_MIDIR_IMPL
 #include "mozilla/ErrorResult.h"
 #include "mozilla/StaticPrefs_midi.h"
 #include "mozilla/StaticPtr.h"
@@ -185,11 +185,11 @@ MIDIPlatformService* MIDIPlatformService::Get() {
     if (StaticPrefs::midi_testing()) {
       gMIDIPlatformService = new TestMIDIPlatformService();
     }
-#ifndef MOZ_WIDGET_ANDROID
+#ifdef MOZ_WEBMIDI_MIDIR_IMPL
     else {
       gMIDIPlatformService = new midirMIDIPlatformService();
     }
-#endif  // MOZ_WIDGET_ANDROID
+#endif  // MOZ_WEBMIDI_MIDIR_IMPL
     gMIDIPlatformService->Init();
   }
   return gMIDIPlatformService;

dom/midi/moz.build

@@ -4,9 +4,6 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-if CONFIG["OS_TARGET"] != "Android":
-    DIRS += ["midir_impl"]
-
 IPDL_SOURCES += [
     "MIDITypes.ipdlh",
     "PMIDIManager.ipdl",
@@ -58,16 +55,17 @@ UNIFIED_SOURCES += [
 
 include("/ipc/chromium/chromium-config.mozbuild")
 
-if CONFIG["OS_TARGET"] == "Linux":
-    OS_LIBS += ["asound"]  # Required by midir
-    UNIFIED_SOURCES += ["AlsaCompatibility.cpp"]
-
-
-if CONFIG["OS_TARGET"] != "Android":
+if CONFIG["MOZ_WEBMIDI_MIDIR_IMPL"]:
+    DEFINES["MOZ_WEBMIDI_MIDIR_IMPL"] = True
+    DIRS += ["midir_impl"]
     UNIFIED_SOURCES += [
         "midirMIDIPlatformService.cpp",
     ]
 
+    if CONFIG["OS_TARGET"] == "Linux":
+        OS_LIBS += ["asound"]  # Required by midir
+        UNIFIED_SOURCES += ["AlsaCompatibility.cpp"]
+
 FINAL_LIBRARY = "xul"
 LOCAL_INCLUDES += [
     "/dom/base",

toolkit/library/gtest/rust/Cargo.toml

@@ -31,6 +31,7 @@ glean_with_gecko = ["gkrust-shared/glean_with_gecko"]
 with_dbus = ["gkrust-shared/with_dbus"]
 thread_sanitizer = ["gkrust-shared/thread_sanitizer"]
 oxidized_breakpad = ["gkrust-shared/oxidized_breakpad"]
+webmidi_midir_impl = ["gkrust-shared/webmidi_midir_impl"]
 
 [dependencies]
 bench-collections-gtest = { path = "../../../../xpcom/rust/gtest/bench-collections" }

toolkit/library/rust/Cargo.toml

@@ -31,6 +31,7 @@ glean_with_gecko = ["gkrust-shared/glean_with_gecko"]
 with_dbus = ["gkrust-shared/with_dbus"]
 thread_sanitizer = ["gkrust-shared/thread_sanitizer"]
 oxidized_breakpad = ["gkrust-shared/oxidized_breakpad"]
+webmidi_midir_impl = ["gkrust-shared/webmidi_midir_impl"]
 
 [dependencies]
 gkrust-shared = { path = "shared" }

toolkit/library/rust/gkrust-features.mozbuild

@@ -81,3 +81,6 @@ if CONFIG['MOZ_ENABLE_DBUS']:
 
 if CONFIG["MOZ_CRASHREPORTER"] and CONFIG['MOZ_OXIDIZED_BREAKPAD']:
     gkrust_features += ['oxidized_breakpad']
+
+if CONFIG["MOZ_WEBMIDI_MIDIR_IMPL"]:
+    gkrust_features += ['webmidi_midir_impl']

toolkit/library/rust/shared/Cargo.toml

@@ -52,6 +52,7 @@ fluent-langneg = { version = "0.13", features = ["cldr"] }
 fluent-langneg-ffi = { path = "../../../../intl/locale/rust/fluent-langneg-ffi" }
 rust_minidump_writer_linux = { path = "../../../crashreporter/rust_minidump_writer_linux", optional = true }
 gecko-profiler = { path = "../../../../tools/profiler/rust-api"}
+midir_impl = { path = "../../../../dom/midi/midir_impl", optional = true }
 
 # Note: `modern_sqlite` means rusqlite's bindings file be for a sqlite with
 # version less than or equal to what we link to. This isn't a problem because we
@@ -72,8 +73,6 @@ qcms = { path = "../../../../gfx/qcms", features = ["c_bindings", "neon"], defau
 [target.'cfg(not(target_os = "android"))'.dependencies]
 viaduct = { git = "https://github.com/mozilla/application-services", rev = "c51b63595a27a6ef45161012323e0261475c10c9"}
 webext_storage_bridge = { path = "../../../components/extensions/storage/webext_storage_bridge" }
-midir = { git = "https://github.com/mozilla/midir.git", rev = "dc87afbd4361ae5ec192e1fab0a6409dd13d4011" }
-midir_impl = { path = "../../../../dom/midi/midir_impl" }
 
 # https://github.com/mozilla/audioipc-2/commits/master
 [target.'cfg(not(target_os = "macos"))'.dependencies]
@@ -110,6 +109,7 @@ glean_with_gecko = ["fog_control/with_gecko"]
 oxidized_breakpad = ["rust_minidump_writer_linux"]
 with_dbus = ["audio_thread_priority/with_dbus"]
 thread_sanitizer = ["xpcom/thread_sanitizer"]
+webmidi_midir_impl = ["midir_impl"]
 
 [lib]
 path = "lib.rs"

toolkit/library/rust/shared/lib.rs

@@ -79,17 +79,14 @@ extern crate localization_ffi;
 #[cfg(not(target_os = "android"))]
 extern crate viaduct;
 
-#[cfg(not(target_os = "android"))]
-extern crate midir;
-
-#[cfg(not(target_os = "android"))]
-extern crate midir_impl;
-
 extern crate gecko_logger;
 
 #[cfg(feature = "oxidized_breakpad")]
 extern crate rust_minidump_writer_linux;
 
+#[cfg(feature = "webmidi_midir_impl")]
+extern crate midir_impl;
+
 extern crate log;
 use log::info;
 

toolkit/moz.configure

@@ -169,22 +169,32 @@ imply_option("--enable-profiling", dmd)
 imply_option("--enable-jemalloc", dmd, when=compile_environment)
 imply_option("--enable-replace-malloc", dmd, when=compile_environment)
 
-# ALSA cubeb backend
+# midir-based Web MIDI support
 # ==============================================================
 @depends(target)
-def alsa_default_check(target):
+def midir_linux_support(target):
     return target.kernel == "Linux" and target.os != "Android"
 
 
+@depends(target, midir_linux_support)
+def midir_support(target, midir_linux_support):
+    if target.os in ("WINNT", "OSX") or midir_linux_support:
+        return True
+
+
+set_config("MOZ_WEBMIDI_MIDIR_IMPL", midir_support)
+
+# ALSA cubeb backend
+# ==============================================================
 option("--enable-alsa", env="MOZ_ALSA", help="Enable ALSA audio backend.")
 
 
-@depends("--enable-alsa", alsa_default_check)
-def enable_alsa_or_alsa_default_check(alsa_enabled, alsa_default_check):
-    return alsa_enabled or alsa_default_check
+@depends("--enable-alsa", midir_linux_support)
+def enable_alsa_or_midir_linux_support(alsa_enabled, midir_linux_support):
+    return alsa_enabled or midir_linux_support
 
 
-pkg_check_modules("MOZ_ALSA", "alsa", when=enable_alsa_or_alsa_default_check)
+pkg_check_modules("MOZ_ALSA", "alsa", when=enable_alsa_or_midir_linux_support)
 
 set_config("MOZ_ALSA", True, when="--enable-alsa")
 set_define("MOZ_ALSA", True, when="--enable-alsa")