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Diffstat (limited to 'libs/appleutility/CABufferList.cpp')
| -rw-r--r-- | libs/appleutility/CABufferList.cpp | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/libs/appleutility/CABufferList.cpp b/libs/appleutility/CABufferList.cpp new file mode 100644 index 0000000000..81298f918a --- /dev/null +++ b/libs/appleutility/CABufferList.cpp @@ -0,0 +1,179 @@ +/* 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.cpp + +=============================================================================*/ + +#include "CABufferList.h" +#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__) + #include <CoreServices/CoreServices.h> +#else + #include <Endian.h> +#endif + +void CABufferList::AllocateBuffers(UInt32 nBytes) +{ + if (nBytes <= GetNumBytes()) return; + + if (mNumberBuffers > 1) + // align successive buffers for Altivec and to take alternating + // cache line hits by spacing them by odd multiples of 16 + nBytes = (nBytes + (0x10 - (nBytes & 0xF))) | 0x10; + UInt32 memorySize = nBytes * mNumberBuffers; + Byte *newMemory = new Byte[memorySize], *p = newMemory; + memset(newMemory, 0, memorySize); // get page faults now, not later + + AudioBuffer *buf = mBuffers; + for (UInt32 i = mNumberBuffers; i--; ++buf) { + if (buf->mData != NULL && buf->mDataByteSize > 0) + // preserve existing buffer contents + memcpy(p, buf->mData, buf->mDataByteSize); + buf->mDataByteSize = nBytes; + buf->mData = p; + p += nBytes; + } + Byte *oldMemory = mBufferMemory; + mBufferMemory = newMemory; + delete[] oldMemory; +} + +void CABufferList::AllocateBuffersAndCopyFrom(UInt32 nBytes, CABufferList *inSrcList, CABufferList *inSetPtrList) +{ + if (mNumberBuffers != inSrcList->mNumberBuffers) return; + if (mNumberBuffers != inSetPtrList->mNumberBuffers) return; + if (nBytes <= GetNumBytes()) { + CopyAllFrom(inSrcList, inSetPtrList); + return; + } + inSetPtrList->VerifyNotTrashingOwnedBuffer(); + UInt32 fromByteSize = inSrcList->GetNumBytes(); + + if (mNumberBuffers > 1) + // align successive buffers for Altivec and to take alternating + // cache line hits by spacing them by odd multiples of 16 + nBytes = (nBytes + (0x10 - (nBytes & 0xF))) | 0x10; + UInt32 memorySize = nBytes * mNumberBuffers; + Byte *newMemory = new Byte[memorySize], *p = newMemory; + memset(newMemory, 0, memorySize); // make buffer "hot" + + AudioBuffer *buf = mBuffers; + AudioBuffer *ptrBuf = inSetPtrList->mBuffers; + AudioBuffer *srcBuf = inSrcList->mBuffers; + for (UInt32 i = mNumberBuffers; i--; ++buf, ++ptrBuf, ++srcBuf) { + if (srcBuf->mData != NULL && srcBuf->mDataByteSize > 0) + // preserve existing buffer contents + memmove(p, srcBuf->mData, srcBuf->mDataByteSize); + buf->mDataByteSize = nBytes; + buf->mData = p; + ptrBuf->mDataByteSize = srcBuf->mDataByteSize; + ptrBuf->mData = p; + p += nBytes; + } + Byte *oldMemory = mBufferMemory; + mBufferMemory = newMemory; + if (inSrcList != inSetPtrList) + inSrcList->BytesConsumed(fromByteSize); + delete[] oldMemory; +} + +void CABufferList::DeallocateBuffers() +{ + AudioBuffer *buf = mBuffers; + for (UInt32 i = mNumberBuffers; i--; ++buf) { + buf->mData = NULL; + buf->mDataByteSize = 0; + } + if (mBufferMemory != NULL) { + delete[] mBufferMemory; + mBufferMemory = NULL; + } + +} + +extern "C" void CAShowAudioBufferList(const AudioBufferList *abl, int framesToPrint, int wordSize) +{ + printf("AudioBufferList @ %p:\n", abl); + const AudioBuffer *buf = abl->mBuffers; + for (UInt32 i = 0; i < abl->mNumberBuffers; ++i, ++buf) { + printf(" [%2ld]: %2ldch, %5ld bytes @ %8p", + i, buf->mNumberChannels, buf->mDataByteSize, buf->mData); + if (framesToPrint) { + printf(":"); + Byte *p = (Byte *)buf->mData; + for (int j = framesToPrint * buf->mNumberChannels; --j >= 0; ) + switch (wordSize) { + case 0: + printf(" %6.3f", *(Float32 *)p); + p += sizeof(Float32); + break; + case 1: + case -1: + printf(" %02X", *p); + p += 1; + break; + case 2: + printf(" %04X", EndianU16_BtoN(*(UInt16 *)p)); + p += 2; + break; + case 3: + printf(" %06X", (p[0] << 16) | (p[1] << 8) | p[2]); + p += 3; + break; + case 4: + printf(" %08lX", EndianU32_BtoN(*(UInt32 *)p)); + p += 4; + break; + case -2: + printf(" %04X", EndianU16_LtoN(*(UInt16 *)p)); + p += 2; + break; + case -3: + printf(" %06X", (p[2] << 16) | (p[1] << 8) | p[0]); + p += 3; + break; + case -4: + printf(" %08lX", EndianU32_LtoN(*(UInt32 *)p)); + p += 4; + break; + } + } + printf("\n"); + } +} + |