mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// Utility functions to help with Apple API calls.
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#ifndef mozilla_AppleUtils_h
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#define mozilla_AppleUtils_h
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#include <AudioToolbox/AudioToolbox.h>
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#include "mozilla/Attributes.h"
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#include "nsError.h"
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namespace mozilla {
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struct AppleUtils {
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// Helper to retrieve properties from AudioFileStream objects.
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static nsresult GetProperty(AudioFileStreamID aAudioFileStream,
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AudioFileStreamPropertyID aPropertyID,
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void* aData);
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// Helper to set a string, string pair on a CFMutableDictionaryRef.
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static void SetCFDict(CFMutableDictionaryRef dict,
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const char* key,
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const char* value);
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// Helper to set a string, int32_t pair on a CFMutableDictionaryRef.
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static void SetCFDict(CFMutableDictionaryRef dict,
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const char* key,
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int32_t value);
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// Helper to set a string, bool pair on a CFMutableDictionaryRef.
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static void SetCFDict(CFMutableDictionaryRef dict,
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const char* key,
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bool value);
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// Helper to retrieve the best audio format available in the given
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// audio stream.
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// The basic format will be returned by default should an error occur.
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static nsresult GetRichestDecodableFormat(
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AudioFileStreamID aAudioFileStream, AudioStreamBasicDescription& aFormat);
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};
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// Wrapper class to call CFRelease on reference types
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// when they go out of scope.
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template <class T>
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class AutoCFRelease {
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public:
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MOZ_IMPLICIT AutoCFRelease(T aRef)
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: mRef(aRef)
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{
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}
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~AutoCFRelease()
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{
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if (mRef) {
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CFRelease(mRef);
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}
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}
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// Return the wrapped ref so it can be used as an in parameter.
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operator T()
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{
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return mRef;
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}
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// Return a pointer to the wrapped ref for use as an out parameter.
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T* receive()
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{
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return &mRef;
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}
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private:
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// Copy operator isn't supported and is not implemented.
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AutoCFRelease<T>& operator=(const AutoCFRelease<T>&);
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T mRef;
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};
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} // namespace mozilla
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#endif // mozilla_AppleUtils_h
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