2014/10/15 下午 10:04:44

iphone Programming Glossary: buf

where to start with audio synthesis on iPhone

http://stackoverflow.com/questions/2067267/where-to-start-with-audio-synthesis-on-iphone

m_outFormat AudioQueueRef m_outAQ enum kBufferSizeInFrames 512 kNumBuffers 4 kSampleRate 44100 AudioQueueBufferRef m_buffers kNumBuffers bool m_isInitialised struct Wave Wave volume 1.f phase 0.f frequency 0.f fStep 0.f float volume float phase.. fmodf phaseL 2 M_PI Take modulus to preserve precision m_waves kRightWave .phase fmodf phaseR 2 M_PI Enqueue the buffer AudioQueueEnqueueBuffer m_outAQ outBuffer 0 NULL bool BleepMachine SetWave int id float frequency float volume if id.. this NULL NULL 0 m_outAQ if result 0 printf ERROR d n int result return false Allocate buffers for the audio UInt32 bufferSizeBytes kBufferSizeInFrames m_outFormat.mBytesPerFrame for int buf 0 buf kNumBuffers buf..

How do I query the iPhone's current IP address?

http://stackoverflow.com/questions/260484/how-do-i-query-the-iphones-current-ip-address

do is to resolve the device's hostname i.e. Returns the local IP or NULL on failure. const char GetLocalIP char buf 256 if gethostname buf sizeof buf return NULL struct hostent he gethostbyname buf if he return NULL for int i 0 he h_addr_list.. the device's hostname i.e. Returns the local IP or NULL on failure. const char GetLocalIP char buf 256 if gethostname buf sizeof buf return NULL struct hostent he gethostbyname buf if he return NULL for int i 0 he h_addr_list i i char ip inet_ntoa.. hostname i.e. Returns the local IP or NULL on failure. const char GetLocalIP char buf 256 if gethostname buf sizeof buf return NULL struct hostent he gethostbyname buf if he return NULL for int i 0 he h_addr_list i i char ip inet_ntoa struct..

How to find out the modulus and exponent of RSA Public Key on iPhone/Objective C

http://stackoverflow.com/questions/3840005/how-to-find-out-the-modulus-and-exponent-of-rsa-public-key-on-iphone-objective-c

pk at iterator return pk subdataWithRange NSMakeRange iterator mod_size int derEncodingGetSizeFrom NSData buf at int iterator const uint8_t data buf bytes int itr iterator int num_bytes 1 int ret 0 if data itr 0x80 num_bytes data.. NSMakeRange iterator mod_size int derEncodingGetSizeFrom NSData buf at int iterator const uint8_t data buf bytes int itr iterator int num_bytes 1 int ret 0 if data itr 0x80 num_bytes data itr 0x80 itr for int i 0 i num_bytes i..

What to use if not “IPHONE UDID”?

http://stackoverflow.com/questions/3860751/what-to-use-if-not-iphone-udid

hash it up. There is an excellent UIDevice Extension Category here NSString macaddress int mib 6 size_t len char buf unsigned char ptr struct if_msghdr ifm struct sockaddr_dl sdl mib 0 CTL_NET mib 1 AF_ROUTE mib 2 0 mib 3 AF_LINK mib 4 NET_RT_IFLIST.. Error if_nametoindex error n return NULL if sysctl mib 6 NULL len NULL 0 0 printf Error sysctl take 1 n return NULL if buf malloc len NULL printf Could not allocate memory. error n return NULL if sysctl mib 6 buf len NULL 0 0 printf Error sysctl.. take 1 n return NULL if buf malloc len NULL printf Could not allocate memory. error n return NULL if sysctl mib 6 buf len NULL 0 0 printf Error sysctl take 2 return NULL ifm struct if_msghdr buf sdl struct sockaddr_dl ifm 1 ptr unsigned char..

on iOS/iPhone: “Too many open files”: need to list open files (like lsof)

http://stackoverflow.com/questions/4083608/on-ios-iphone-too-many-open-files-need-to-list-open-files-like-lsof

question #import sys types.h #import fcntl.h #import errno.h #import sys param.h void lsof int flags int fd char buf MAXPATHLEN 1 int n 1 for fd 0 fd int FD_SETSIZE fd errno 0 flags fcntl fd F_GETFD 0 if flags 1 errno if errno EBADF return..