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Diffstat (limited to 'libs/appleutility/CoreAudio/AudioCodecs/ACPublic/ACBaseCodec.h')
| -rw-r--r-- | libs/appleutility/CoreAudio/AudioCodecs/ACPublic/ACBaseCodec.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/libs/appleutility/CoreAudio/AudioCodecs/ACPublic/ACBaseCodec.h b/libs/appleutility/CoreAudio/AudioCodecs/ACPublic/ACBaseCodec.h new file mode 100644 index 0000000000..6689d91fbe --- /dev/null +++ b/libs/appleutility/CoreAudio/AudioCodecs/ACPublic/ACBaseCodec.h @@ -0,0 +1,147 @@ +/* + File: ACBaseCodec.h + Abstract: Part of CoreAudio Utility Classes + Version: 1.1 + + Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple + Inc. ("Apple") in consideration of your agreement to the following + terms, and your use, installation, modification or redistribution of + this Apple software constitutes acceptance of these terms. If you do + not agree with these terms, please do not use, install, modify or + redistribute this Apple software. + + In consideration of your agreement to abide by the following terms, and + subject to these terms, Apple grants you a personal, non-exclusive + license, under Apple's copyrights in this original Apple software (the + "Apple Software"), to use, reproduce, modify and redistribute the Apple + Software, with or without modifications, in source and/or binary forms; + provided that if you redistribute the Apple Software in its entirety and + without modifications, you must retain this notice and the following + text and disclaimers in all such redistributions of the Apple Software. + Neither the name, trademarks, service marks or logos of Apple Inc. may + be used to endorse or promote products derived from the Apple Software + without specific prior written permission from Apple. Except as + expressly stated in this notice, no other rights or licenses, express or + implied, are granted by Apple herein, including but not limited to any + patent rights that may be infringed by your derivative works or by other + works in which the Apple Software may be incorporated. + + The Apple Software is provided by Apple on an "AS IS" basis. APPLE + MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION + THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS + FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND + OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. + + IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL + OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, + MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED + AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), + STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. + + Copyright (C) 2014 Apple Inc. All Rights Reserved. + +*/ +#if !defined(__ACBaseCodec_h__) +#define __ACBaseCodec_h__ + +//============================================================================= +// Includes +//============================================================================= + +#include "ACCodec.h" +#include "CAStreamBasicDescription.h" +#include <vector> +#include "GetCodecBundle.h" + +//============================================================================= +// ACBaseCodec +// +// An abstract subclass of ACCodec that implements all the nuts and bolts +// of the ACCodec interface, except for buffer handling. This class does +// the proper dispatching of property requests and manages the list of +// input and output formats. +//============================================================================= + +class ACBaseCodec +: + public ACCodec +{ + +// Construction/Destruction +public: + ACBaseCodec( AudioComponentInstance inInstance ); + virtual ~ACBaseCodec(); + +// Property Management +public: + virtual void GetPropertyInfo(AudioCodecPropertyID inPropertyID, UInt32& outPropertyDataSize, Boolean& outWritable); + virtual void GetProperty(AudioCodecPropertyID inPropertyID, UInt32& ioPropertyDataSize, void* outPropertyData); + virtual void SetProperty(AudioCodecPropertyID inPropertyID, UInt32 inPropertyDataSize, const void* inPropertyData); + +// Data Handling +public: + bool IsInitialized() const { return mIsInitialized; } + virtual void Initialize(const AudioStreamBasicDescription* inInputFormat, const AudioStreamBasicDescription* inOutputFormat, const void* inMagicCookie, UInt32 inMagicCookieByteSize); + virtual void Uninitialize(); + virtual void Reset(); + virtual UInt32 GetInputBufferByteSize() const = 0; + virtual UInt32 GetUsedInputBufferByteSize() const = 0; + +protected: + virtual void ReallocateInputBuffer(UInt32 inInputBufferByteSize) = 0; + + bool mIsInitialized; + +// Format Management +public: + UInt32 GetNumberSupportedInputFormats() const; + void GetSupportedInputFormats(AudioStreamBasicDescription* outInputFormats, UInt32& ioNumberInputFormats) const; + + void GetCurrentInputFormat(AudioStreamBasicDescription& outInputFormat); + virtual void SetCurrentInputFormat(const AudioStreamBasicDescription& inInputFormat); + + UInt32 GetNumberSupportedOutputFormats() const; + void GetSupportedOutputFormats(AudioStreamBasicDescription* outOutputFormats, UInt32& ioNumberOutputFormats) const; + + void GetCurrentOutputFormat(AudioStreamBasicDescription& outOutputFormat); + virtual void SetCurrentOutputFormat(const AudioStreamBasicDescription& inOutputFormat); + + virtual UInt32 GetMagicCookieByteSize() const; + virtual void GetMagicCookie(void* outMagicCookieData, UInt32& ioMagicCookieDataByteSize) const; + virtual void SetMagicCookie(const void* outMagicCookieData, UInt32 inMagicCookieDataByteSize); + + virtual bool ImplementsFeature(UInt32 /* feature */) const { return false; } + virtual void AppendInputBufferList(const AudioBufferList * /* ioBufferList */, UInt32& /* ioNumberPackets */, const AudioStreamPacketDescription * /* inPacketDescription */, UInt32 * /* outBytesConsumed */) { CODEC_THROW(-4); /*unimpErr*/ } + virtual UInt32 ProduceOutputBufferList(AudioBufferList * /* ioBufferList */, UInt32& /* ioNumberPackets */, AudioStreamPacketDescription * /* outPacketDescription */) { CODEC_THROW(-4); /*unimpErr*/ } +protected: + void AddInputFormat(const AudioStreamBasicDescription& inInputFormat); + void AddOutputFormat(const AudioStreamBasicDescription& inOutputFormat); + + OSType GetSubType(); + + typedef std::vector<CAStreamBasicDescription> FormatList; + + FormatList mInputFormatList; +#if TARGET_OS_WIN32 + // VC 2005 screws up if this is not aligned to 8-byte boundaries + __declspec(align(8)) CAStreamBasicDescription mInputFormat; +#else + CAStreamBasicDescription mInputFormat; +#endif + + FormatList mOutputFormatList; +#if TARGET_OS_WIN32 + // VC 2005 screws up if this is not aligned to 8-byte boundaries + __declspec(align(8)) CAStreamBasicDescription mOutputFormat; +#else + CAStreamBasicDescription mOutputFormat; +#endif + OSType mCodecSubType; + UInt32 mPadding[3]; // Align this with 16-byte boundaries + +}; + +#endif |