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Diffstat (limited to 'libs/appleutility/CABufferList.h')
| -rw-r--r-- | libs/appleutility/CABufferList.h | 300 |
1 files changed, 0 insertions, 300 deletions
diff --git a/libs/appleutility/CABufferList.h b/libs/appleutility/CABufferList.h deleted file mode 100644 index 3b0cef9a52..0000000000 --- a/libs/appleutility/CABufferList.h +++ /dev/null @@ -1,300 +0,0 @@ -/* Copyright: © Copyright 2005 Apple Computer, Inc. All rights reserved. - - Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, 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 AppleÕs - 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 Computer, 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. -*/ -/*============================================================================= - CABufferList.h - -=============================================================================*/ - -#ifndef __CABufferList_h__ -#define __CABufferList_h__ - -#include <stddef.h> -#include "CAStreamBasicDescription.h" -#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__) - #include <CoreServices/CoreServices.h> -#else - #include <AssertMacros.h> -#endif - -extern "C" void CAShowAudioBufferList(const AudioBufferList *abl, int framesToPrint, int wordSize); - // wordSize: 0 = float32, else integer word size, negative if little-endian - -/* ____________________________________________________________________________ -// CABufferList - variable length buffer list - - This class is designed for use in non-simplistic cases. For AudioUnits, AUBufferList - is preferred. - - CABufferList can be used in one of two ways: - - as mutable pointers into non-owned memory - - as an immutable array of buffers (owns its own memory). - - All buffers are assumed to have the same format (number of channels, word size), so that - we can assume their mDataByteSizes are all the same. -____________________________________________________________________________ */ -class CABufferList { -public: - void * operator new(size_t /*size*/, int nBuffers) { - return ::operator new(sizeof(CABufferList) + (nBuffers-1) * sizeof(AudioBuffer)); - } - static CABufferList * New(const char *name, const CAStreamBasicDescription &format) - { - UInt32 numBuffers = format.NumberChannelStreams(), channelsPerBuffer = format.NumberInterleavedChannels(); - return new(numBuffers) CABufferList(name, numBuffers, channelsPerBuffer); - } - -protected: - CABufferList(const char *name, UInt32 numBuffers, UInt32 channelsPerBuffer) : - mName(name), - mBufferMemory(NULL) - { - check(numBuffers > 0 /*&& channelsPerBuffer > 0*/); - mNumberBuffers = numBuffers; - AudioBuffer *buf = mBuffers; - for (UInt32 i = mNumberBuffers; i--; ++buf) { - buf->mNumberChannels = channelsPerBuffer; - buf->mDataByteSize = 0; - buf->mData = NULL; - } - } - -public: - ~CABufferList() - { - if (mBufferMemory) - delete[] mBufferMemory; - } - - const char * Name() { return mName; } - - const AudioBufferList & GetBufferList() const { return *(AudioBufferList *)&mNumberBuffers; } - - AudioBufferList & GetModifiableBufferList() - { - VerifyNotTrashingOwnedBuffer(); - return _GetBufferList(); - } - - UInt32 GetNumBytes() const - { - return mBuffers[0].mDataByteSize; - } - - void SetBytes(UInt32 nBytes, void *data) - { - VerifyNotTrashingOwnedBuffer(); - check(mNumberBuffers == 1); - mBuffers[0].mDataByteSize = nBytes; - mBuffers[0].mData = data; - } - - void CopyAllFrom(CABufferList *srcbl, CABufferList *ptrbl) - // copies bytes from srcbl - // make ptrbl reflect the length copied - // note that srcbl may be same as ptrbl! - { - // Note that this buffer *can* own memory and its pointers/lengths are not - // altered; only its buffer contents, which are copied from srcbl. - // The pointers/lengths in ptrbl are updated to reflect the addresses/lengths - // of the copied data, and srcbl's contents are consumed. - ptrbl->VerifyNotTrashingOwnedBuffer(); - UInt32 nBytes = srcbl->GetNumBytes(); - AudioBuffer *mybuf = mBuffers, *srcbuf = srcbl->mBuffers, - *ptrbuf = ptrbl->mBuffers; - for (UInt32 i = mNumberBuffers; i--; ++mybuf, ++srcbuf, ++ptrbuf) { - memmove(mybuf->mData, srcbuf->mData, srcbuf->mDataByteSize); - ptrbuf->mData = mybuf->mData; - ptrbuf->mDataByteSize = srcbuf->mDataByteSize; - } - if (srcbl != ptrbl) - srcbl->BytesConsumed(nBytes); - } - - void AppendFrom(CABufferList *blp, UInt32 nBytes) - { - VerifyNotTrashingOwnedBuffer(); - AudioBuffer *mybuf = mBuffers, *srcbuf = blp->mBuffers; - for (UInt32 i = mNumberBuffers; i--; ++mybuf, ++srcbuf) { - check(nBytes <= srcbuf->mDataByteSize); - memcpy((Byte *)mybuf->mData + mybuf->mDataByteSize, srcbuf->mData, nBytes); - mybuf->mDataByteSize += nBytes; - } - blp->BytesConsumed(nBytes); - } - - void PadWithZeroes(UInt32 desiredBufferSize) - // for cases where an algorithm (e.g. SRC) requires some - // padding to create silence following end-of-file - { - VerifyNotTrashingOwnedBuffer(); - if (GetNumBytes() > desiredBufferSize) return; - AudioBuffer *buf = mBuffers; - for (UInt32 i = mNumberBuffers; i--; ++buf) { - memset((Byte *)buf->mData + buf->mDataByteSize, 0, desiredBufferSize - buf->mDataByteSize); - buf->mDataByteSize = desiredBufferSize; - } - } - - void SetToZeroes(UInt32 nBytes) - { - VerifyNotTrashingOwnedBuffer(); - AudioBuffer *buf = mBuffers; - for (UInt32 i = mNumberBuffers; i--; ++buf) { - memset((Byte *)buf->mData, 0, nBytes); - buf->mDataByteSize = nBytes; - } - } - - void Reset() - { - DeallocateBuffers(); - } - - Boolean SameDataAs(const CABufferList* anotherBufferList) - { - // check to see if two buffer lists point to the same memory. - if (mNumberBuffers != anotherBufferList->mNumberBuffers) return false; - - for (UInt32 i = 0; i < mNumberBuffers; ++i) { - if (mBuffers[i].mData != anotherBufferList->mBuffers[i].mData) return false; - } - return true; - } - - void BytesConsumed(UInt32 nBytes) - // advance buffer pointers, decrease buffer sizes - { - VerifyNotTrashingOwnedBuffer(); - AudioBuffer *buf = mBuffers; - for (UInt32 i = mNumberBuffers; i--; ++buf) { - check(nBytes <= buf->mDataByteSize); - buf->mData = (Byte *)buf->mData + nBytes; - buf->mDataByteSize -= nBytes; - } - } - - void SetFrom(const AudioBufferList *abl) - { - VerifyNotTrashingOwnedBuffer(); - memcpy(&_GetBufferList(), abl, (char *)&abl->mBuffers[abl->mNumberBuffers] - (char *)abl); - } - - void SetFrom(const CABufferList *blp) - { - SetFrom(&blp->GetBufferList()); - } - - void SetFrom(const AudioBufferList *abl, UInt32 nBytes) - { - VerifyNotTrashingOwnedBuffer(); - AudioBuffer *mybuf = mBuffers; - const AudioBuffer *srcbuf = abl->mBuffers; - for (UInt32 i = mNumberBuffers; i--; ++mybuf, ++srcbuf) { - mybuf->mNumberChannels = srcbuf->mNumberChannels; - mybuf->mDataByteSize = nBytes; - mybuf->mData = srcbuf->mData; - } - } - - void SetFrom(const CABufferList *blp, UInt32 nBytes) - { - SetFrom(&blp->GetBufferList(), nBytes); - } - - AudioBufferList * ToAudioBufferList(AudioBufferList *abl) const - { - memcpy(abl, &GetBufferList(), (char *)&abl->mBuffers[mNumberBuffers] - (char *)abl); - return abl; - } - - void AllocateBuffers(UInt32 nBytes); - void AllocateBuffersAndCopyFrom(UInt32 nBytes, CABufferList *inCopyFromList, CABufferList *inSetPtrList); - - void DeallocateBuffers(); - - void UseExternalBuffer(Byte *ptr, UInt32 nBytes); - - void AdvanceBufferPointers(UInt32 nBytes) - // this is for bufferlists that function simply as - // an array of pointers into another bufferlist, being advanced, - // as in RenderOutput implementations - { - VerifyNotTrashingOwnedBuffer(); - AudioBuffer *buf = mBuffers; - for (UInt32 i = mNumberBuffers; i--; ++buf) { - buf->mData = (Byte *)buf->mData + nBytes; - buf->mDataByteSize -= nBytes; - } - } - - void SetNumBytes(UInt32 nBytes) - { - VerifyNotTrashingOwnedBuffer(); - AudioBuffer *buf = mBuffers; - for (UInt32 i = mNumberBuffers; i--; ++buf) - buf->mDataByteSize = nBytes; - } - - void Print(const char *label=NULL, int nframes=0, int wordSize=0) const - { - if (label == NULL) - label = mName; - printf("%s - ", label); - CAShowAudioBufferList(&GetBufferList(), nframes, wordSize); - if (mBufferMemory) - printf(" owned memory @ 0x%p:\n", mBufferMemory); - } - -protected: - AudioBufferList & _GetBufferList() { return *(AudioBufferList *)&mNumberBuffers; } // use with care - // if we make this public, then we lose ability to call VerifyNotTrashingOwnedBuffer - void VerifyNotTrashingOwnedBuffer() - { - // This needs to be called from places where we are modifying the buffer list. - // It's an error to modify the buffer pointers or lengths if we own the buffer memory. - check(mBufferMemory == NULL); - } - - const char * mName; // for debugging - Byte * mBufferMemory; - // the rest must exactly mirror the structure of AudioBufferList - UInt32 mNumberBuffers; - AudioBuffer mBuffers[1]; -}; - -#endif // __CABufferList_h__ |