diff options
Diffstat (limited to 'libs/appleutility/CoreAudio/PublicUtility/CAStreamBasicDescription.h')
| -rw-r--r-- | libs/appleutility/CoreAudio/PublicUtility/CAStreamBasicDescription.h | 84 |
1 files changed, 42 insertions, 42 deletions
diff --git a/libs/appleutility/CoreAudio/PublicUtility/CAStreamBasicDescription.h b/libs/appleutility/CoreAudio/PublicUtility/CAStreamBasicDescription.h index 8b81dba69a..6c6b7a1c98 100644 --- a/libs/appleutility/CoreAudio/PublicUtility/CAStreamBasicDescription.h +++ b/libs/appleutility/CoreAudio/PublicUtility/CAStreamBasicDescription.h @@ -2,14 +2,14 @@ File: CAStreamBasicDescription.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 @@ -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. - + */ #ifndef __CAStreamBasicDescription_h__ #define __CAStreamBasicDescription_h__ @@ -90,14 +90,14 @@ enum { // It adds a number of convenience routines, but otherwise adds nothing // to the footprint of the original struct. //============================================================================= -class CAStreamBasicDescription : +class CAStreamBasicDescription : public AudioStreamBasicDescription { // Constants public: static const AudioStreamBasicDescription sEmpty; - + enum CommonPCMFormat { kPCMFormatOther = 0, kPCMFormatFloat32 = 1, @@ -105,13 +105,13 @@ public: kPCMFormatFixed824 = 3, kPCMFormatFloat64 = 4 }; - + // Construction/Destruction public: CAStreamBasicDescription(); - + CAStreamBasicDescription(const AudioStreamBasicDescription &desc); - + CAStreamBasicDescription( double inSampleRate, UInt32 inFormatID, UInt32 inBytesPerPacket, UInt32 inFramesPerPacket, UInt32 inBytesPerFrame, UInt32 inChannelsPerFrame, @@ -164,55 +164,55 @@ public: { memcpy(this, &desc, sizeof(AudioStreamBasicDescription)); } - + bool FromText(const char *inTextDesc) { return FromText(inTextDesc, *this); } static bool FromText(const char *inTextDesc, AudioStreamBasicDescription &outDesc); // return true if parsing was successful - + static const char *sTextParsingUsageString; - + // _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ // // interrogation - + bool IsPCM() const { return mFormatID == kAudioFormatLinearPCM; } - + bool PackednessIsSignificant() const { Assert(IsPCM(), "PackednessIsSignificant only applies for PCM"); return (SampleWordSize() << 3) != mBitsPerChannel; } - + bool AlignmentIsSignificant() const { return PackednessIsSignificant() || (mBitsPerChannel & 7) != 0; } - + bool IsInterleaved() const { return !(mFormatFlags & kAudioFormatFlagIsNonInterleaved); } - + bool IsSignedInteger() const { return IsPCM() && (mFormatFlags & kAudioFormatFlagIsSignedInteger); } - + bool IsFloat() const { return IsPCM() && (mFormatFlags & kAudioFormatFlagIsFloat); } - + bool IsNativeEndian() const { return (mFormatFlags & kAudioFormatFlagIsBigEndian) == kAudioFormatFlagsNativeEndian; } - + // for sanity with interleaved/deinterleaved possibilities, never access mChannelsPerFrame, use these: - UInt32 NumberInterleavedChannels() const { return IsInterleaved() ? mChannelsPerFrame : 1; } + UInt32 NumberInterleavedChannels() const { return IsInterleaved() ? mChannelsPerFrame : 1; } UInt32 NumberChannelStreams() const { return IsInterleaved() ? 1 : mChannelsPerFrame; } UInt32 NumberChannels() const { return mChannelsPerFrame; } - UInt32 SampleWordSize() const { + UInt32 SampleWordSize() const { return (mBytesPerFrame > 0 && NumberInterleavedChannels()) ? mBytesPerFrame / NumberInterleavedChannels() : 0; } @@ -221,15 +221,15 @@ public: Assert(mBytesPerFrame > 0, "bytesPerFrame must be > 0 in BytesToFrames"); return nbytes / mBytesPerFrame; } - + bool SameChannelsAndInterleaving(const CAStreamBasicDescription &a) const { return this->NumberChannels() == a.NumberChannels() && this->IsInterleaved() == a.IsInterleaved(); } - + bool IdentifyCommonPCMFormat(CommonPCMFormat &outFormat, bool *outIsInterleaved=NULL) const { // return true if it's a valid PCM format. - + outFormat = kPCMFormatOther; // trap out patently invalid formats. if (mFormatID != kAudioFormatLinearPCM || mFramesPerPacket != 1 || mBytesPerFrame != mBytesPerPacket || mBitsPerChannel/8 > mBytesPerFrame || mChannelsPerFrame == 0) @@ -241,7 +241,7 @@ public: if (wordsize % mChannelsPerFrame != 0) return false; wordsize /= mChannelsPerFrame; } - + if ((mFormatFlags & kAudioFormatFlagIsBigEndian) == kAudioFormatFlagsNativeEndian && wordsize * 8 == mBitsPerChannel) { // packed and native endian, good @@ -281,11 +281,11 @@ public: CommonPCMFormat fmt; return IdentifyCommonPCMFormat(fmt, outIsInterleaved) && fmt == kPCMFormatInt16; } - + // _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ // // manipulation - + void SetCanonical(UInt32 nChannels, bool interleaved) // note: leaves sample rate untouched { @@ -302,7 +302,7 @@ public: mFormatFlags |= kAudioFormatFlagIsNonInterleaved; } } - + bool IsCanonical() const { if (mFormatID != kAudioFormatLinearPCM) return false; @@ -319,7 +319,7 @@ public: && mBytesPerFrame == reqFrameSize && mBytesPerPacket == reqFrameSize); } - + void SetAUCanonical(UInt32 nChannels, bool interleaved) { mFormatID = kAudioFormatLinearPCM; @@ -338,7 +338,7 @@ public: mFormatFlags |= kAudioFormatFlagIsNonInterleaved; } } - + void ChangeNumberChannels(UInt32 nChannels, bool interleaved) // alter an existing format { @@ -356,28 +356,28 @@ public: mFormatFlags |= kAudioFormatFlagIsNonInterleaved; } } - + // _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ // // other - + bool IsEqual(const AudioStreamBasicDescription &other, bool interpretingWildcards=true) const; static bool FlagIndependentEquivalence(const AudioStreamBasicDescription &x, const AudioStreamBasicDescription &y); static bool IsFunctionallyEquivalent(const AudioStreamBasicDescription &x, const AudioStreamBasicDescription &y); - + void Print() const { Print (stdout); } void Print(FILE* file) const { - PrintFormat (file, "", "AudioStreamBasicDescription:"); + PrintFormat (file, "", "AudioStreamBasicDescription:"); } void PrintFormat(FILE *f, const char *indent, const char *name) const { char buf[256]; fprintf(f, "%s%s %s\n", indent, name, AsString(buf, sizeof(buf))); } - + void PrintFormat2(FILE *f, const char *indent, const char *name) const { // no trailing newline char buf[256]; fprintf(f, "%s%s %s", indent, name, AsString(buf, sizeof(buf))); @@ -385,14 +385,14 @@ public: char * AsString(char *buf, size_t bufsize, bool brief=false) const; - static void Print (const AudioStreamBasicDescription &inDesc) - { + static void Print (const AudioStreamBasicDescription &inDesc) + { CAStreamBasicDescription desc(inDesc); desc.Print (); } - + OSStatus Save(CFPropertyListRef *outData) const; - + OSStatus Restore(CFPropertyListRef &inData); // Operations |