34 lines
1.4 KiB
Julia
34 lines
1.4 KiB
Julia
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const libpa_shim = Libdl.find_library(
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["pa_shim"],
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[joinpath(dirname(@__FILE__), "..", "deps", "usr", "lib")])
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function init_pa_shim()
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shim_dlib = Libdl.dlopen(libpa_shim)
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# pointer to the shim's process callback
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global const shim_processcb_c = Libdl.dlsym(shim_dlib, :pa_shim_processcb)
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if shim_processcb_c == C_NULL
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error("Got NULL pointer loading `pa_shim_processcb`")
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end
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end
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const pa_shim_errmsg_t = Cint
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const PA_SHIM_ERRMSG_OVERFLOW = Cint(0) # input overflow
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const PA_SHIM_ERRMSG_UNDERFLOW = Cint(1) # output underflow
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const PA_SHIM_ERRMSG_ERR_OVERFLOW = Cint(2) # error buffer overflowed
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# This struct is shared with pa_shim.c
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mutable struct pa_shim_info_t
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inputbuf::Ptr{PaUtilRingBuffer} # ringbuffer for input
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outputbuf::Ptr{PaUtilRingBuffer} # ringbuffer for output
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errorbuf::Ptr{PaUtilRingBuffer} # ringbuffer to send error notifications
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sync::Cint # keep input/output ring buffers synchronized (0/1)
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notifycb::Ptr{Void} # Julia callback to notify on updates (called from audio thread)
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inputhandle::Ptr{Void} # condition to notify on new input data
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outputhandle::Ptr{Void} # condition to notify when ready for output
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errorhandle::Ptr{Void} # condition to notify on new errors
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end
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shimversion() = ccall((:pa_shim_getversion, libpa_shim), Cint, ())
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Base.unsafe_convert(::Type{Ptr{Void}}, info::pa_shim_info_t) = pointer_from_objref(info)
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