ec5e62e533
Adds a library to run classic Bluetooth A2DP source (output) audio from the PicoW. Simple example showing operation and callbacks. Factor out multiple BT lock/unlock and place in the PicoW variant files.
32 lines
1.2 KiB
C++
32 lines
1.2 KiB
C++
// Use to create a callback thunk from C to C++
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// #define CCALLBACKNAME to a unique per-file name and #include this file
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// To make a CB use a define of the form:
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/*
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#define PACKETHANDLERCB(class, cbFcn) \
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(CCALLBACKNAME<void(uint8_t, uint16_t, uint8_t*, uint16_t), __COUNTER__>::func = std::bind(&class::cbFcn, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3, std::placeholders::_4), \
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static_cast<btstack_packet_handler_t>(<CCALLBACKNAMEvoid(uint8_t, uint16_t, uint8_t*, uint16_t), __COUNTER__ - 1>::callback))
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*/
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#include <functional>
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// Thank you to https://stackoverflow.com/questions/66474621/multiple-non-static-callbacks-of-c-member-functions for the following beautiful hack
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#ifndef CCALLBACKNAME
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#define CCALLBACKNAME _CCallback
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#endif
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template <typename T, int tag>
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struct CCALLBACKNAME;
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template <typename Ret, typename... Params, int tag>
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struct CCALLBACKNAME<Ret(Params...), tag> {
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template <typename... Args>
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static Ret callback(Args... args) {
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return func(args...);
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}
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int _tag = tag;
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static std::function<Ret(Params...)> func;
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};
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template <typename Ret, typename... Params, int tag>
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std::function<Ret(Params...)> CCALLBACKNAME<Ret(Params...), tag>::func;
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