summaryrefslogtreecommitdiffstatshomepage
path: root/3rdparty/portaudio/bindings/cpp/include/portaudiocpp/CppFunCallbackStream.hxx
blob: c43b64316d1454963eb37c4f163aba3f4f4be02e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
#ifndef INCLUDED_PORTAUDIO_CPPFUNCALLBACKSTREAM_HXX
#define INCLUDED_PORTAUDIO_CPPFUNCALLBACKSTREAM_HXX

// ---------------------------------------------------------------------------------------

#include "portaudio.h"

#include "portaudiocpp/CallbackStream.hxx"

// ---------------------------------------------------------------------------------------

// Forward declaration(s):
namespace portaudio
{
    class StreamParameters;
}

// ---------------------------------------------------------------------------------------

// Declaration(s):
namespace portaudio
{


    namespace impl
    {
        extern "C"
        {
            int cppCallbackToPaCallbackAdapter(const void *inputBuffer, void *outputBuffer, unsigned long numFrames,
                const PaStreamCallbackTimeInfo *timeInfo, PaStreamCallbackFlags statusFlags,
                void *userData);
        } // extern "C"
    }

    // -----------------------------------------------------------------------------------

    //////
    /// @brief Callback stream using a C++ function (either a free function or a static function)
    /// callback.
    //////
    class FunCallbackStream : public CallbackStream
    {
    public:
        typedef int (*CallbackFunPtr)(const void *inputBuffer, void *outputBuffer, unsigned long numFrames,
            const PaStreamCallbackTimeInfo *timeInfo, PaStreamCallbackFlags statusFlags,
            void *userData);

        // -------------------------------------------------------------------------------

        //////
        /// @brief Simple structure containing a function pointer to the C++ callback function and a
        /// (void) pointer to the user supplied data.
        //////
        struct CppToCCallbackData
        {
            CppToCCallbackData();
            CppToCCallbackData(CallbackFunPtr funPtr, void *userData);
            void init(CallbackFunPtr funPtr, void *userData);

            CallbackFunPtr funPtr;
            void *userData;
        };

        // -------------------------------------------------------------------------------

        FunCallbackStream();
        FunCallbackStream(const StreamParameters &parameters, CallbackFunPtr funPtr, void *userData);
        ~FunCallbackStream();

        void open(const StreamParameters &parameters, CallbackFunPtr funPtr, void *userData);

    private:
        FunCallbackStream(const FunCallbackStream &); // non-copyable
        FunCallbackStream &operator=(const FunCallbackStream &); // non-copyable

        CppToCCallbackData adapterData_;

        void open(const StreamParameters &parameters);
    };


} // portaudio

// ---------------------------------------------------------------------------------------

#endif // INCLUDED_PORTAUDIO_CPPFUNCALLBACKSTREAM_HXX