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1 #include "portaudiocpp/HostApi.hxx"
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2
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3 #include "portaudiocpp/System.hxx"
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4 #include "portaudiocpp/Device.hxx"
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5 #include "portaudiocpp/SystemDeviceIterator.hxx"
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6 #include "portaudiocpp/Exception.hxx"
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7
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8 namespace portaudio
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9 {
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10
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11 // -----------------------------------------------------------------------------------
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12
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13 HostApi::HostApi(PaHostApiIndex index) : devices_(NULL)
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14 {
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15 try
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16 {
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17 info_ = Pa_GetHostApiInfo(index);
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18
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19 // Create and populate devices array:
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20 int numDevices = deviceCount();
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21
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22 devices_ = new Device*[numDevices];
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23
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24 for (int i = 0; i < numDevices; ++i)
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25 {
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26 PaDeviceIndex deviceIndex = Pa_HostApiDeviceIndexToDeviceIndex(index, i);
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27
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28 if (deviceIndex < 0)
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29 {
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30 throw PaException(deviceIndex);
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31 }
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32
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33 devices_[i] = &System::instance().deviceByIndex(deviceIndex);
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34 }
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35 }
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36 catch (const std::exception &e)
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37 {
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38 // Delete any (partially) constructed objects (deconstructor isn't called):
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39 delete[] devices_; // devices_ is either NULL or valid
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40
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41 // Re-throw exception:
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42 throw e;
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43 }
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44 }
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45
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46 HostApi::~HostApi()
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47 {
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48 // Destroy devices array:
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49 delete[] devices_;
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50 }
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51
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52 // -----------------------------------------------------------------------------------
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53
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54 PaHostApiTypeId HostApi::typeId() const
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55 {
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56 return info_->type;
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57 }
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58
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59 PaHostApiIndex HostApi::index() const
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60 {
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61 PaHostApiIndex index = Pa_HostApiTypeIdToHostApiIndex(typeId());
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62
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63 if (index < 0)
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64 throw PaException(index);
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65
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66 return index;
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67 }
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68
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69 const char *HostApi::name() const
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70 {
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71 return info_->name;
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72 }
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73
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74 int HostApi::deviceCount() const
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75 {
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76 return info_->deviceCount;
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77 }
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78
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79 // -----------------------------------------------------------------------------------
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80
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81 HostApi::DeviceIterator HostApi::devicesBegin()
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82 {
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83 DeviceIterator tmp;
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84 tmp.ptr_ = &devices_[0]; // begin (first element)
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85 return tmp;
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86 }
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87
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88 HostApi::DeviceIterator HostApi::devicesEnd()
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89 {
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90 DeviceIterator tmp;
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91 tmp.ptr_ = &devices_[deviceCount()]; // end (one past last element)
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92 return tmp;
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93 }
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94
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95 // -----------------------------------------------------------------------------------
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96
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97 Device &HostApi::defaultInputDevice() const
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98 {
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99 return System::instance().deviceByIndex(info_->defaultInputDevice);
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100 }
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101
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102 Device &HostApi::defaultOutputDevice() const
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103 {
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104 return System::instance().deviceByIndex(info_->defaultOutputDevice);
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105 }
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106
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107 // -----------------------------------------------------------------------------------
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108
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109 bool HostApi::operator==(const HostApi &rhs) const
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110 {
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111 return (typeId() == rhs.typeId());
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112 }
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113
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114 bool HostApi::operator!=(const HostApi &rhs) const
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115 {
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116 return !(*this == rhs);
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117 }
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118
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119 // -----------------------------------------------------------------------------------
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120
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121 } // namespace portaudio
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