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In line with the Audio_out session a Audio_in session is used to record audio frames. Like in the Audio_out session shared memory in form of the Audio_in::Stream is used to transport the frames from the server to the client. These frames consist of single channel (mono) samples. An Audio_in::Packet always contains a full period of frames. A Audio_in server captures frames and puts them into the Audio_in::Stream. To do so the server allocates a Audio_in::Packet from the packet queue embedded in the Audio_in::Stream. If the queue is already full, the server will override packets and notify the client by submitting the 'overrun' signal. The client has to cope with this situation, e.g., by saving packets more frequently. A client will also receive a 'progress' signal from the server when a new Audio_in::Packet was submitted to the packet queue. Fixes #1644.
This is the example operating system based on the Genode OS framework: :_Init_: is the first real process in the system. The provided implementation uses a very simple XML parser to read its configuration files. :_Drivers_: The example OS has basic drivers for frame buffer, mouse and keyboard input, the PCI bus, the real-time clock, and system-specific timers. :_Server_: The only server in the example OS is Nitpicker, a minimal-complexity GUI server. :_Test_: are also part of the example OS. You may have a look at the fork bomb as a simple system stress test. :_Ldso_: is the dynamic linker used for loading executables that are linked against shared libraries. :_Lib_: contains libraries used by the components of the OS repository, for example, the alarm framework.