August 2009 - Darwin-dev - lists.apple.com

Re: Eject key code?
by Terry Lambert 06 Aug '09

06 Aug '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hi, -- Terry _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… On Aug 5, 2009, at 7:11 PM, Andre-John Mas wrote: Does anyone know the keycode for the eject key? I am trying to get an application to simulate an eject on a remote computer, though it depends on knowing the right key code to send. André-John I wouldn't be trying to simulate a keypress, given that the key you are trying to press is being intercepted by BezelServices, and a simulated keystroke wouldn't be, unless you pretended to be a USB keyboard and loaded a KEXT to do it. 8-). Programatically, this would be controlled by the Disk Arbitration framework. Search <http://developer.apple.com> for DADiskEject. This email sent to site_archiver(a)lists.apple.com

1 0

resolving addresses for the system framework
by Arnab Ganguly 06 Aug '09

06 Aug '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:content-type; bh=+G6wQbBge4D7Yd/vMuVc+OX14cprTpL2TtalWSH11gY=; b=yCRA9t+z24A/L5KZFRMTC12WWmc4Q3kUXkXFZzPMGFze9zi/7MA+sNq3xeLWXSneXU G1X1UOVkf/uFG43NqcXoio86OldAmJm330OEWfJkriFTyEBUyiCUB5egnnBI/ymvDhPO ta0+riisr5lHGcncg0GMa37tyjvw1bBv0ZZo8= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=mV86PiWfwoEkB5uVarRwgQ6dpvYn9vikf+V02qwZmsOJSQCBuqlNVMuBltuFNaDDC/ uACZ3/gGenFh0f19qnMcDWoJaEVDPmOImxV4dqvDZb3trFMyVU8wREkgJSS72rrgDN0U Fiz8cmxbDAmRze5E8tl39VRud9Br24iFLjws8= _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

1 0

Re: Eject key code?
by Dave Keck 06 Aug '09

06 Aug '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:from:date:x-google-sender-auth:message-id:subject:to:cc :content-type:content-transfer-encoding; bh=Sf7NeRFlBDs3uXNr5f1JrsSoG8sF5wXrPxfekEbxRws=; b=fG90xXL6+qXhtPtoiKpjvZSDV/ZyLHEWQeUWPHE6t2RqWuoUP42KvCXWnXWdaAeAhP uGyshntgLh8Uzpa+UBPTgyo+uEI+9aoAPJcaNd3sCEsL+sK1xbb7uqSGhJX+p8Y7pEHo v+hi0tLjHIQjzC/qEANeyNg/SpmdbOEKZxu7o= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:from:date :x-google-sender-auth:message-id:subject:to:cc:content-type :content-transfer-encoding; b=VLm1abXnt1HGlGElPMCBhrkjvsfM6I/Z/tTOETZnq8C172QocGrPP9ClucxURo/0vA vrq+njQiu7jY9tKmT2xrSQGo8YeEENpbouBuviSJMz+DdAy8EIUJY/CZSxeT/5I9i9ht Wxo1nZ/sz+xQ7h8o/fvuUoZGGbYagSAGZ1FIQ= After searching for a bit (in HIToolbox/Events.h), I can't seem to find one. It's been my experience that the eject key is treated as a 'special' key, so I'm not surprised. You'll probably have better luck taking this question to Carbon-dev or Cocoa-dev. (But perhaps to save you the trip, I'd create an event tap that monitors every keyboard event, and that should tell you what event you'll need to send to simulate the eject key.) _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

1 0

Eject key code?
by Andre-John Mas 06 Aug '09

06 Aug '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hi, André-John _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Does anyone know the keycode for the eject key? I am trying to get an application to simulate an eject on a remote computer, though it depends on knowing the right key code to send. This email sent to site_archiver(a)lists.apple.com

1 0

PureDarwin Audio, or audio without CoreAudio
by Cooper 01 Aug '09

01 Aug '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com So far I've figured out the following; please correct me If I'm wrong: Please help Rich _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Im working on the pure darwin system and am trying to get audio working. As the open-source Apple components include all kernel components but not userspace (CoreAudio), I'm attempting to write an application which reads audio from an input device and saves it into a file. Unfortunately I'm having problems - at least in part related to the lack of documentation; writing a kernel driver is documented as is CoreAudio but not the userspace/kernelspace interface. * I can access the IOAudioEngineStatus for a IOAudioEngine (via the IOAudioEngineUserClient) by calling IOConnectMapMemory with kIOAudioStatusBuffer. Q. Is there a mechanism to tell me when its safe to use this data, or is it, as I suspect, volatile and you use it "as it". * IOConnectMapMemory with kIOAudioBytesInInputBuffer or kIOAudioBytesInOutputBuffer do nothing. Tracing through the kernel code it appears to returns a valid buffer but nothign ever writes into it (this matches with what I've seen). * To get the data for a stream I call IOConnectCallMethod with kIOAudioEngineCallRegisterClientBuffer, supplying a userspace buffer, an arbitrary bufferSetID and a streamID. This is of type IOAudioBufferDataDescriptor (+ lots of buffer space). * Calling IOConnectCallMethod with kIOAudioEngineCallStart/ kIOAudioEngineCallStop starts/stops the engine (respectively) So based on this and the fact that input is simpler than output (according to the audio kernel documentation) I'm trying to record. So I'm creating a buffer, registering it, starting the engine, setting the fActualNumSampleFrames member of my buffer to 256 and then calling IOConnectTrap6 with kIOAudioEngineTrapPerformClientIO. This appears to give me data but just not intelligible stuff. I was expecting IOConnectTrap6 with kIOAudioEngineTrapPerformClientIO to block for ~0.005 seconds (time taken to read 256 sample frames) but it doesn't. Q. My key question is how do I get intelligible audio from the driver? I've tried putting a sleep in, but to no avail. Also I was expecting that if I called IOConnectTrap6 with kIOAudioEngineTrapPerformClientIO repeatedly but incremented firstSampleFrame by 256 each time I'd see the driver write data into the first 2048 bytes of fData, the first time, then the next 2048 bytes etc etc i.e. start writing into the fData buffer at firstSampleFrame's * sizeof( float ) * numchannels in ... again it doesn't and appears to simply overwite the first 2048 bytes of fData. I've tried many things but still can't get it to work so any help or pointers you can provide will be greatfully recieved. This email sent to site_archiver(a)lists.apple.com

1 0