2014/10/15 下午 10:08:17

iphone Programming Glossary: enqueue

NSManagedObjectContext performBlockAndWait: doesn't execute on background thread?

http://stackoverflow.com/questions/11831946/nsmanagedobjectcontext-performblockandwait-doesnt-execute-on-background-thread

why performBlockAndWait will always run in the calling thread. performBlock is completely asynchronous. It will always enqueue the block onto the queue of the receiving MOC and then return immediately. Thus moc performBlock ^ Foo moc performBlock.. at some undetermined time in some undetermined thread. The function will return to the caller as soon as it has been enqueued performBlockAndWait is This block will be executed at some undetermined time in this exact same thread. The function will..

Is MonoTouch a viable platform for iPhone development?

http://stackoverflow.com/questions/1847274/is-monotouch-a-viable-platform-for-iphone-development

Data format from recording using Audio Queue framework

http://stackoverflow.com/questions/3963827/data-format-from-recording-using-audio-queue-framework

samples AudioFileWritePackets failed aqr mRecordPacket numSamples free samples if we're not stopping re enqueue the buffe so that it gets filled again if aqr IsRunning XThrowIfError AudioQueueEnqueueBuffer inAQ inBuffer 0 NULL AudioQueueEnqueueBuffer..

Why might my AudioQueueOutputCallback not be called?

http://stackoverflow.com/questions/7575670/why-might-my-audioqueueoutputcallback-not-be-called

which is immediately re queued. Or would be if my callback happened What happens The buffers are all filled and enqueued successfully and I hear the audio stream clearly. For testing I use a large number of buffers 15 and all of them play through.. seems to be working perfectly. If I don't wait for my callback assuming it will never be called and instead drive the enqueueing of buffers based on the data as it is written I can play the audio stream indefinitely reusing and re enqueueing buffers.. the enqueueing of buffers based on the data as it is written I can play the audio stream indefinitely reusing and re enqueueing buffers as if they had been explicitly returned to me by the callback. It is that fact that I can play the stream perfectly..

iOS Stream Audio from one iOS Device to Another

http://stackoverflow.com/questions/8357514/ios-stream-audio-from-one-ios-device-to-another

seconds and recording stopped halfway through that. In which case we copy across only the recorded bytes and we don't enqueue any more buffers. SInt64 numRemainingBytes THIS mPlayBufferEndPosition THIS mPlayBufferPosition SInt64 numBytesToCopy numRemainingBytes..

Recording mp3 instead of caf file

http://stackoverflow.com/questions/9399019/recording-mp3-instead-of-caf-file

the data going in not necessary for pcm but required for some compressed audio CopyEncoderCookieToFile allocate and enqueue buffers bufferByteSize ComputeRecordBufferSize mRecordFormat kBufferDurationSeconds enough bytes for half a second for i..

where to start with audio synthesis on iPhone

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

kLeftWave .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.. 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 kLeftWave id kNumWaves..

iPhone Dev: Xcode debugger does not stop on breakpoints

http://stackoverflow.com/questions/601265/iphone-dev-xcode-debugger-does-not-stop-on-breakpoints

1236463549.944803 155 gdb set env NSUnbufferedIO YES # PBXGDB_MISetEnvCommand t 4.314377 Tepoch 1236463549.945039 # Enqueue seq in Command Q PBXGDB_SetupSharedLibrarySequence 0x9049db0 t 4.314625 Tepoch 1236463549.945288 # Executing Sequence PBXGDB_SetupSharedLibrarySequence.. F595 4CB9 8707 744E92D66245 TestApp.app TestApp # PBXGDB_MILoadExecutableCommand t 4.320612 Tepoch 1236463549.951275 # Enqueue seq in Command Q PBXGDB_FixAndContinueIsSupportedSequence 0x9bdc260 t 4.321476 Tepoch 1236463549.952138 # Enqueue seq in.. # Enqueue seq in Command Q PBXGDB_FixAndContinueIsSupportedSequence 0x9bdc260 t 4.321476 Tepoch 1236463549.952138 # Enqueue seq in Command Q PBXGDB_NewBreakpointSequence 0xa516f90 t 4.321941 Tepoch 1236463549.952603 # Enqueue seq in Command Q PBXGDB_AttachControlSequence..