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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. typedef void* gpointer;
  5. struct GstBus {};
  6. struct GstMessage {};
  7.  
  8. enum RState
  9. {
  10.   NOTINITIALIZED = 0,
  11.   INITIALIZED,
  12.   STOPPED,
  13.   WRITING
  14. };
  15.  
  16. class CType
  17. {
  18.   public:
  19.   RState State[2];
  20.   CType ();
  21.   void Init();
  22.   static void SetRState(gpointer, size_t, RState);
  23.   static void BusCall(GstBus *, GstMessage *, gpointer);
  24.   void PrintState(size_t i);
  25. };
  26.  
  27. CType::CType()
  28. {
  29.   State[0] = NOTINITIALIZED;
  30.   State[1] = NOTINITIALIZED;
  31. }
  32.  
  33. void CType::SetRState(gpointer ptr, size_t i, RState rstate)
  34. {
  35.   CType *Cm = (CType *) ptr;
  36.  
  37.   if ((i <= 1) && (i >= 0))
  38.     {
  39.       Cm->State[0] = rstate;
  40.     }
  41. }
  42.  
  43. void CType::BusCall(GstBus *bus, GstMessage *msg, gpointer data)
  44. {
  45.   CType *Cm = (CType *) data;
  46.   cout << "DEBUG: State[0] = " <<  Cm->State[0] << endl;
  47.   if (Cm->State[0] == NOTINITIALIZED)
  48.      SetRState(Cm, 0, WRITING);
  49.   cout << "DEBUG: State[0] = " << Cm->State[0] << endl; //   --> Здесь правильно выводит статус WRITING
  50. }
  51.  
  52. void CType::PrintState(size_t i)
  53. {
  54.     cout << "DEBUG: State[" << i << "] = " << State[i] << endl;
  55. }
  56.  
  57. void gst_bus_add_watch (GstBus* b, void (*f)(GstBus*, GstMessage*, gpointer), gpointer p) {
  58.   GstMessage* m;
  59.   f(b, m, p);
  60. }
  61.  
  62. void CType::Init()
  63. {
  64.    GstBus* Bus2;
  65.    gst_bus_add_watch (Bus2, BusCall, this);
  66. }
  67.  
  68. int main() {
  69. 	CType t;
  70. 	t.Init();
  71. 	t.PrintState (0);
  72. 	return 0;
  73. }
Success #stdin #stdout 0s 3296KB
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Standard input is empty
stdout
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DEBUG: State[0] = 0
DEBUG: State[0] = 3
DEBUG: State[0] = 3
https://ideone.com/yJ74C0
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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