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/*
* Copyright (C) 2011, 2012 Stephen F. Booth <me@sbooth.org>
* All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - Neither the name of Stephen F. Booth nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <CoreFoundation/CoreFoundation.h>
#include <CoreAudio/CoreAudioTypes.h>
#import "AudioDecoder.h"
#include <tta++/libtta.h>
typedef struct {
TTA_io_callback iocb;
AudioDecoder *decoder;
} TTA_io_callback_wrapper;
// ========================================
// An AudioDecoder subclass supporting TrueAudio files
// ========================================
class TrueAudioDecoder : public AudioDecoder
{
public:
// ========================================
// The data types handled by this class
static CFArrayRef CreateSupportedFileExtensions();
static CFArrayRef CreateSupportedMIMETypes();
static bool HandlesFilesWithExtension(CFStringRef extension);
static bool HandlesMIMEType(CFStringRef mimeType);
// ========================================
// Creation
TrueAudioDecoder(InputSource *inputSource);
// ========================================
// Destruction
virtual ~TrueAudioDecoder();
// ========================================
// File access
virtual bool Open(CFErrorRef *error = nullptr);
virtual bool Close(CFErrorRef *error = nullptr);
// ========================================
// The native format of the source audio
virtual CFStringRef CreateSourceFormatDescription() const;
// ========================================
// Attempt to read frameCount frames of audio, returning the actual number of frames read
virtual UInt32 ReadAudio(AudioBufferList *bufferList, UInt32 frameCount);
// ========================================
// Source audio information
virtual inline SInt64 GetTotalFrames() const { return mTotalFrames; }
virtual inline SInt64 GetCurrentFrame() const { return mCurrentFrame; }
// ========================================
// Seeking support
virtual inline bool SupportsSeeking() const { return mInputSource->SupportsSeeking(); }
virtual SInt64 SeekToFrame(SInt64 frame);
private:
tta::tta_decoder *mDecoder;
TTA_io_callback_wrapper *mCallbacks;
SInt64 mCurrentFrame;
SInt64 mTotalFrames;
UInt32 mFramesToSkip;
};
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