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<div id="projectname">PortAudio
 <span id="projectnumber">2.0</span>
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<div class="title">jpa_tools.c</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Portable Audio I/O Library</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Java Binding for PortAudio</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * Based on the Open Source API proposed by Ross Bencina</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Copyright (c) 2008 Ross Bencina</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * a copy of this software and associated documentation files</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * (the "Software"), to deal in the Software without restriction,</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * including without limitation the rights to use, copy, modify, merge,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * publish, distribute, sublicense, and/or sell copies of the Software,</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * and to permit persons to whom the Software is furnished to do so,</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * subject to the following conditions:</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * The above copyright notice and this permission notice shall be</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * included in all copies or substantial portions of the Software.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * The text above constitutes the entire PortAudio license; however, </span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * the PortAudio community also makes the following non-binding requests:</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> * Any person wishing to distribute modifications to the Software is</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * requested to send the modifications to the original developer so that</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * they can be incorporated into the canonical version. It is also </span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * requested that these non-binding requests be included along with the </span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * license above.</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#include "com_portaudio_PortAudio.h"</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#include "<a class="code" href="portaudio_8h.html" title="The portable PortAudio API.">portaudio.h</a>"</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor">#include "jpa_tools.h"</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> jint jpa_GetIntField( JNIEnv *env, jclass cls, jobject obj, <span class="keyword">const</span> <span class="keywordtype">char</span> *fieldName )</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="comment">/* Look for the instance field maxInputChannels in cls */</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  jfieldID fid = (*env)->GetFieldID(env, cls, fieldName, <span class="stringliteral">"I"</span>);</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">if</span> (fid == NULL)</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  {</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  jpa_ThrowError( env, <span class="stringliteral">"Cannot find integer JNI field."</span> );</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  }</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  {</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">return</span> (*env)->GetIntField(env, obj, fid );</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  }</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> }</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="keywordtype">void</span> jpa_SetIntField( JNIEnv *env, jclass cls, jobject obj, <span class="keyword">const</span> <span class="keywordtype">char</span> *fieldName, jint value )</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> {</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="comment">/* Look for the instance field maxInputChannels in cls */</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  jfieldID fid = (*env)->GetFieldID(env, cls, fieldName, <span class="stringliteral">"I"</span>);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">if</span> (fid == NULL)</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  {</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  jpa_ThrowError( env, <span class="stringliteral">"Cannot find integer JNI field."</span> );</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  }</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  {</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  (*env)->SetIntField(env, obj, fid, value );</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  }</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> }</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> jlong jpa_GetLongField( JNIEnv *env, jclass cls, jobject obj, <span class="keyword">const</span> <span class="keywordtype">char</span> *fieldName )</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> {</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="comment">/* Look for the instance field maxInputChannels in cls */</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  jfieldID fid = (*env)->GetFieldID(env, cls, fieldName, <span class="stringliteral">"J"</span>);</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">if</span> (fid == NULL)</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  {</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  jpa_ThrowError( env, <span class="stringliteral">"Cannot find long JNI field."</span> );</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">return</span> 0L;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  }</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">return</span> (*env)->GetLongField(env, obj, fid );</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  }</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> }</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="keywordtype">void</span> jpa_SetLongField( JNIEnv *env, jclass cls, jobject obj, <span class="keyword">const</span> <span class="keywordtype">char</span> *fieldName, jlong value )</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> {</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">/* Look for the instance field maxInputChannels in cls */</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  jfieldID fid = (*env)->GetFieldID(env, cls, fieldName, <span class="stringliteral">"J"</span>);</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">if</span> (fid == NULL)</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  {</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  jpa_ThrowError( env, <span class="stringliteral">"Cannot find long JNI field."</span> );</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  }</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  {</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  (*env)->SetLongField(env, obj, fid, value );</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  }</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> }</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="keywordtype">void</span> jpa_SetDoubleField( JNIEnv *env, jclass cls, jobject obj, <span class="keyword">const</span> <span class="keywordtype">char</span> *fieldName, jdouble value )</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> {</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="comment">/* Look for the instance field maxInputChannels in cls */</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  jfieldID fid = (*env)->GetFieldID(env, cls, fieldName, <span class="stringliteral">"D"</span>);</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">if</span> (fid == NULL)</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  {</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  jpa_ThrowError( env, <span class="stringliteral">"Cannot find double JNI field."</span> );</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  }</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  {</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  (*env)->SetDoubleField(env, obj, fid, value );</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  }</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> }</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> jdouble jpa_GetDoubleField( JNIEnv *env, jclass cls, jobject obj, <span class="keyword">const</span> <span class="keywordtype">char</span> *fieldName )</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> {</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="comment">/* Look for the instance field maxInputChannels in cls */</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  jfieldID fid = (*env)->GetFieldID(env, cls, fieldName, <span class="stringliteral">"D"</span>);</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordflow">if</span> (fid == NULL)</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  {</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  jpa_ThrowError( env, <span class="stringliteral">"Cannot find double JNI field."</span> );</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  }</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  {</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">return</span> (*env)->GetDoubleField(env, obj, fid );</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  }</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> }</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="keywordtype">void</span> jpa_SetStringField( JNIEnv *env, jclass cls, jobject obj, <span class="keyword">const</span> <span class="keywordtype">char</span> *fieldName, <span class="keyword">const</span> <span class="keywordtype">char</span> *value )</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> {</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="comment">/* Look for the instance field maxInputChannels in cls */</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  jfieldID fid = (*env)->GetFieldID(env, cls, fieldName, <span class="stringliteral">"Ljava/lang/String;"</span>);</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">if</span> (fid == NULL)</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  {</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  jpa_ThrowError( env, <span class="stringliteral">"Cannot find String JNI field."</span> );</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  {</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  jstring jstr = (*env)->NewStringUTF(env, value);</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">if</span> (jstr == NULL)</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  {</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  jpa_ThrowError( env, <span class="stringliteral">"Cannot create new String."</span> );</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  }</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  {</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  (*env)->SetObjectField(env, obj, fid, jstr );</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  }</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  }</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> }</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <a class="code" href="structPaStreamParameters.html">PaStreamParameters</a> *jpa_FillStreamParameters( JNIEnv *env, jobject jstreamParam, <a class="code" href="structPaStreamParameters.html">PaStreamParameters</a> *myParams )</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> {</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  jclass cls;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  </div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">if</span>( jstreamParam == NULL ) <span class="keywordflow">return</span> NULL; <span class="comment">// OK, not an error</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  cls = (*env)->GetObjectClass(env, jstreamParam);</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  </div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  myParams-><a class="code" href="structPaStreamParameters.html#a861ff361da71fc2572dd356c9c9878ca">channelCount</a> = jpa_GetIntField( env, cls, jstreamParam, <span class="stringliteral">"channelCount"</span> );</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  myParams-><a class="code" href="structPaStreamParameters.html#aebaf648b4d11dd1252a747b76b8da084">device</a> = jpa_GetIntField( env, cls, jstreamParam, <span class="stringliteral">"device"</span> );</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  myParams-><a class="code" href="structPaStreamParameters.html#ad8d2d3063757b812f9e5f8709f41052b">sampleFormat</a> = jpa_GetIntField( env, cls, jstreamParam, <span class="stringliteral">"sampleFormat"</span> );</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  myParams-><a class="code" href="structPaStreamParameters.html#aa1e80ac0551162fd091db8936ccbe9a0">suggestedLatency</a> = jpa_GetDoubleField( env, cls, jstreamParam, <span class="stringliteral">"suggestedLatency"</span> );</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  myParams-><a class="code" href="structPaStreamParameters.html#aff01b9fa0710ad1654471e97665c06a9">hostApiSpecificStreamInfo</a> = NULL;</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordflow">return</span> myParams;</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> }</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="comment">// Create an exception that will be thrown when we return from the JNI call.</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> jint jpa_ThrowError( JNIEnv *env, <span class="keyword">const</span> <span class="keywordtype">char</span> *message )</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> {</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">return</span> (*env)->ThrowNew(env, (*env)->FindClass( env, <span class="stringliteral">"java/lang/RuntimeException"</span>),</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  message );</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> }</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="comment">// Throw an exception on error.</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> jint jpa_CheckError( JNIEnv *env, <a class="code" href="portaudio_8h.html#a4949e4a8ef9f9dbe8cbee414ce69841d">PaError</a> err )</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> {</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordflow">if</span>( err == -1 )</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  {</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">return</span> jpa_ThrowError( env, <span class="stringliteral">"-1, possibly no available default device"</span> );</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  }</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span>( err < 0 )</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  {</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keywordflow">if</span>( err == paUnanticipatedHostError )</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  {</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keyword">const</span> <a class="code" href="structPaHostErrorInfo.html">PaHostErrorInfo</a> *hostErrorInfo = <a class="code" href="portaudio_8h.html#aad573f208b60577f21d2777a7c5054e0">Pa_GetLastHostErrorInfo</a>();</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordflow">return</span> jpa_ThrowError( env, hostErrorInfo-><a class="code" href="structPaHostErrorInfo.html#aa40a7ed0c73b85b39563d80f7877876c">errorText</a> );</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  }</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  {</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">return</span> jpa_ThrowError( env, <a class="code" href="portaudio_8h.html#ae606855a611cf29c7d2d7421df5e3b5d">Pa_GetErrorText</a>( err ) );</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  }</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  }</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  {</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordflow">return</span> err;</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  }</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> }</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> </div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="comment">// Get the stream pointer from a BlockingStream long field.</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <a class="code" href="portaudio_8h.html#a19874734f89958fccf86785490d53b4c">PaStream</a> *jpa_GetStreamPointer( JNIEnv *env, jobject blockingStream )</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> {</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  jclass cls = (*env)->GetObjectClass(env, blockingStream);</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">return</span> (<a class="code" href="portaudio_8h.html#a19874734f89958fccf86785490d53b4c">PaStream</a> *) jpa_GetLongField( env, cls, blockingStream, <span class="stringliteral">"nativeStream"</span> );</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> }</div>
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