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<compoundname>audio_portaudio_source</compoundname>
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<type>friend PaStreamCallback</type>
<definition>friend PaStreamCallback portaudio_source_callback</definition>
<argsstring></argsstring>
<name>portaudio_source_callback</name>
<briefdescription>
</briefdescription>
<detaileddescription>
</detaileddescription>
<inbodydescription>
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<type>friend <ref refid="classboost_1_1shared__ptr" kindref="compound">audio_portaudio_source_sptr</ref></type>
<definition>audio_portaudio_source_sptr audio_portaudio_make_source</definition>
<argsstring>(int sampling_rate, const std::string device_name, bool ok_to_block)</argsstring>
<name>audio_portaudio_make_source</name>
<param>
<type>int</type>
<declname>sampling_rate</declname>
</param>
<param>
<type>const std::string</type>
<declname>device_name</declname>
</param>
<param>
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<declname>ok_to_block</declname>
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<briefdescription>
<para>PORTAUDIO audio source. </para> </briefdescription>
<detaileddescription>
<para><parameterlist kind="param"><parameteritem>
<parameternamelist>
<parametername>sampling_rate</parametername>
</parameternamelist>
<parameterdescription>
<para>sampling rate in Hz </para></parameterdescription>
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<parameteritem>
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<parametername>device_name</parametername>
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<para>PORTAUDIO device name, e.g., "pa:" </para></parameterdescription>
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<parameteritem>
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<parametername>ok_to_block</parametername>
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<parameterdescription>
<para>true if it's ok for us to block </para></parameterdescription>
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<briefdescription>
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<name>d_device_name</name>
<briefdescription>
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<definition>bool audio_portaudio_source::d_ok_to_block</definition>
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<briefdescription>
</briefdescription>
<detaileddescription>
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<definition>bool audio_portaudio_source::d_verbose</definition>
<argsstring></argsstring>
<name>d_verbose</name>
<briefdescription>
</briefdescription>
<detaileddescription>
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<type>unsigned int</type>
<definition>unsigned int audio_portaudio_source::d_portaudio_buffer_size_frames</definition>
<argsstring></argsstring>
<name>d_portaudio_buffer_size_frames</name>
<briefdescription>
</briefdescription>
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<type>PaStream *</type>
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<name>d_stream</name>
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<briefdescription>
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<name>d_writer</name>
<briefdescription>
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<argsstring></argsstring>
<name>d_reader</name>
<briefdescription>
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<definition>omni_semaphore audio_portaudio_source::d_ringbuffer_ready</definition>
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<name>d_ringbuffer_ready</name>
<briefdescription>
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<definition>int audio_portaudio_source::d_noverruns</definition>
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<briefdescription>
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<detaileddescription>
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<definition>gri_logger_sptr audio_portaudio_source::d_log</definition>
<argsstring></argsstring>
<name>d_log</name>
<briefdescription>
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<name>output_error_msg</name>
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<declname>msg</declname>
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<param>
<type>int</type>
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<argsstring>(const char *msg, int err)</argsstring>
<name>bail</name>
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<type>int</type>
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<exceptions> throw (std::runtime_error)</exceptions>
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<definition>void audio_portaudio_source::create_ringbuffer</definition>
<argsstring>()</argsstring>
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<para>number of input streams connected </para></parameterdescription>
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This function is called by the runtime system whenever the topology changes. Most classes do not need to override this. This check is in addition to the constraints specified by the input and output gr_io_signatures. </para> </detaileddescription>
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<para>\ Audio source using PORTAUDIO</para><para>Input samples must be in the range [-1,1]. </para> </detaileddescription>
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