diff options
Diffstat (limited to 'libs/appleutility/CoreAudio/AudioFile/AFPublic/CompressedPacketTable.cpp')
| -rw-r--r-- | libs/appleutility/CoreAudio/AudioFile/AFPublic/CompressedPacketTable.cpp | 48 |
1 files changed, 24 insertions, 24 deletions
diff --git a/libs/appleutility/CoreAudio/AudioFile/AFPublic/CompressedPacketTable.cpp b/libs/appleutility/CoreAudio/AudioFile/AFPublic/CompressedPacketTable.cpp index ba07580bba..d2c08906fb 100644 --- a/libs/appleutility/CoreAudio/AudioFile/AFPublic/CompressedPacketTable.cpp +++ b/libs/appleutility/CoreAudio/AudioFile/AFPublic/CompressedPacketTable.cpp @@ -2,14 +2,14 @@ File: CompressedPacketTable.cpp Abstract: CompressedPacketTable.h 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 @@ -25,13 +25,13 @@ 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 @@ -40,9 +40,9 @@ 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. - + */ #include "CompressedPacketTable.h" #include "CAAutoDisposer.h" @@ -66,7 +66,7 @@ void CompressedPacketTable::push_back(const AudioStreamPacketDescriptionExtended { SInt64 baseIndex = mSize >> kShift; UInt32 packetIndex = (UInt32)(mSize & kMask); - + if (packetIndex == 0) { // first packet in a new sequence. create a new PacketBase. PacketBase newBase; @@ -75,16 +75,16 @@ void CompressedPacketTable::push_back(const AudioStreamPacketDescriptionExtended newBase.mDescType = kExtendedPacketDescription; mBases.push_back(newBase); } - + PacketBase& base = mBases[(size_t)baseIndex]; AudioStreamPacketDescriptionExtended* descs = (AudioStreamPacketDescriptionExtended*)base.mDescs; descs[packetIndex] = inDesc; - + if (packetIndex == kMask) { // last packet in a sequence. compress the sequence. Compress(base); } - + mSize++; } @@ -109,13 +109,13 @@ const AudioStreamPacketDescriptionExtended CompressedPacketTable::operator[](SIn if ((size_t)baseIndex >= mBases.size()) throw -1; - + const PacketBase& base = mBases[(size_t)baseIndex]; - + SInt64 packetOffset = 0; UInt32 packetSize = 0; - - switch (base.mDescType) + + switch (base.mDescType) { ACCESS_TYPE(Tiny) ACCESS_TYPE(Small) @@ -123,7 +123,7 @@ const AudioStreamPacketDescriptionExtended CompressedPacketTable::operator[](SIn case kExtendedPacketDescription : return ((AudioStreamPacketDescriptionExtended*)base.mDescs)[packetIndex]; } - + AudioStreamPacketDescriptionExtended outDesc; outDesc.mStartOffset = base.mBaseOffset + packetOffset; outDesc.mDataByteSize = packetSize; @@ -131,14 +131,14 @@ const AudioStreamPacketDescriptionExtended CompressedPacketTable::operator[](SIn outDesc.mFrameOffset = mFramesPerPacket * inPacketIndex; //printf("get %d %10qd %10qd %2d %10qd %6d %10qd\n", base.mDescType, inPacketIndex, baseIndex, packetIndex, outDesc.mStartOffset, outDesc.mDataByteSize, outDesc.mFrameOffset); - + return outDesc; } // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ bool CompressedPacketTable::isContiguous(PacketBase& base) -{ +{ AudioStreamPacketDescriptionExtended* descs = (AudioStreamPacketDescriptionExtended*)base.mDescs; SInt64 expectedOffset = descs[0].mStartOffset + descs[0].mDataByteSize; for (UInt32 i = 1; i <= kMask; ++i) { @@ -149,7 +149,7 @@ bool CompressedPacketTable::isContiguous(PacketBase& base) } bool CompressedPacketTable::hasVariableFrames(PacketBase& base) -{ +{ AudioStreamPacketDescriptionExtended* descs = (AudioStreamPacketDescriptionExtended*)base.mDescs; for (UInt32 i = 0; i <= kMask; ++i) { if (descs[i].mVariableFramesInPacket) return true; @@ -158,7 +158,7 @@ bool CompressedPacketTable::hasVariableFrames(PacketBase& base) } UInt32 CompressedPacketTable::largestPacket(PacketBase& base) -{ +{ UInt32 maxPacketSize = 0; AudioStreamPacketDescriptionExtended* descs = (AudioStreamPacketDescriptionExtended*)base.mDescs; for (UInt32 i = 0; i <= kMask; ++i) { @@ -193,17 +193,17 @@ UInt32 CompressedPacketTable::largestPacket(PacketBase& base) void CompressedPacketTable::Compress(PacketBase& base) { - if (hasVariableFrames(base)) + if (hasVariableFrames(base)) return; - + bool contiguous = isContiguous(base); - + AudioStreamPacketDescriptionExtended* descs = (AudioStreamPacketDescriptionExtended*)base.mDescs; SInt64 delta = descs[kMask].mStartOffset + descs[kMask].mDataByteSize - descs[0].mStartOffset; - + SInt64 baseOffset = descs[0].mStartOffset; base.mBaseOffset = baseOffset; - + if (delta <= 65535LL) { COMPRESS_TYPE(Tiny, UInt16) } else if (delta <= 4294967295LL && largestPacket(base) <= 65535) { |