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/*
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
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