Audio: deprecate Context::supportedExtensions().

Same as deddda418e did for the matching
function in GL::Context.

doc/changelog.dox

@@ -1449,11 +1449,14 @@ See also:
     particular, if `BUILD_DEPRECATED` is set but `MAGNUM_BUILD_DEPRECATED` not,
     the unprefixed options are also recognized. See also
     [mosra/corrade#139](https://github.com/mosra/corrade/issues/139).
--   @cpp GL::Context::supportedExtensions() @ce is deprecated as it doesn't
-    provide anything that @ref GL::Context::extensionStrings(),
-    @ref GL::Extension::extensions() and @ref GL::Context::isExtensionSupported()
-    wouldn't provide already and only causes extra overhead during context
-    creation
+-   @cpp GL::Context::supportedExtensions() @ce /
+    @cpp Audio::Context::supportedExtensions() @ce is deprecated as it doesn't
+    provide anything that @ref GL::Context::extensionStrings() /
+    @ref Audio::Context::extensionStrings(), @ref GL::Extension::extensions() /
+    @ref Audio::Extension::extensions() and
+    @ref GL::Context::isExtensionSupported() /
+    @ref Audio::Context::isExtensionSupported() wouldn't provide already and
+    only causes extra overhead during context creation
 -   @ref GL::DebugOutput::setCallback() taking a @ref std::string in the
     callback function pointer is deprecated in favor of a version taking a
     @relativeref{Corrade,Containers::StringView}. See also

src/Magnum/Audio/Context.cpp

@@ -290,7 +290,9 @@ bool Context::tryCreate(const Configuration& configuration) {
     const Containers::Array<Containers::StringView> extensions = extensionStrings();
     for(const Containers::StringView extension: extensions) {
         if(const Extension* found = findExtension(extension)) {
+            #ifdef MAGNUM_BUILD_DEPRECATED
             arrayAppend(_supportedExtensions, *found);
+            #endif
             _extensionStatus.set(found->index(), true);
         }
     }
@@ -317,7 +319,11 @@ bool Context::tryCreate(const Configuration& configuration) {
     return true;
 }
 
-Context::Context(Context&& other) noexcept: _device{other._device}, _context{other._context}, _extensionStatus{Utility::move(other._extensionStatus)}, _supportedExtensions{Utility::move(other._supportedExtensions)} {
+Context::Context(Context&& other) noexcept: _device{other._device}, _context{other._context}, _extensionStatus{Utility::move(other._extensionStatus)}
+    #ifdef MAGNUM_BUILD_DEPRECATED
+    , _supportedExtensions{Utility::move(other._supportedExtensions)}
+    #endif
+{
     other._device = nullptr;
     other._context = nullptr;
     if(currentContext == &other)

src/Magnum/Audio/Context.h

@@ -418,16 +418,21 @@ class MAGNUM_AUDIO_EXPORT Context {
          */
         Containers::Array<Containers::StringView> extensionStrings() const;
 
+        #ifdef MAGNUM_BUILD_DEPRECATED
         /**
          * @brief Supported extensions
          *
          * The list contains only extensions from OpenAL versions newer than
          * the current.
-         * @see @ref isExtensionSupported(), @ref Extension::extensions()
+         * @m_deprecated_since_latest Deprecated as it doesn't provide anything
+         *      that @ref extensionStrings(), @ref Extension::extensions() and
+         *      @ref isExtensionSupported() wouldn't provide already and only
+        *       causes extra overhead during context creation.
          */
-        Containers::ArrayView<const Extension> supportedExtensions() const {
+        CORRADE_DEPRECATED("use extensionStrings(), Extension::extensions() and isExtensionSupported() instead") Containers::ArrayView<const Extension> supportedExtensions() const {
             return _supportedExtensions;
         }
+        #endif
 
         /**
          * @brief Whether given extension is supported
@@ -488,7 +493,9 @@ class MAGNUM_AUDIO_EXPORT Context {
 
         Math::BitVector<Implementation::ExtensionCount> _extensionStatus;
         Math::BitVector<Implementation::ExtensionCount> _extensionDisabledStatus;
+        #ifdef MAGNUM_BUILD_DEPRECATED
         Containers::Array<Extension> _supportedExtensions;
+        #endif
         Containers::Array<Extension> _disabledExtensions;
 };