function.vse-converter-speech-to-text-bluemix.xml

<function name="vse-converter-speech-to-text-bluemix" type="converters" type-in="unknown" type-out="application/vxml-unnormalized" products="all" >
  <prototype>
    <description>The Watson Speech to Text Bluemix service can be used anywhere there is a need to bridge the gap between the spoken word and written form. The easy-to-use service uses machine intelligence to combine information about grammar and language structure with knowledge of the composition of the audio signal to generate an accurate transcription.<p />

    See the Speech to Text documentation for detailed information (http://www.ibm.com/smarterplanet/us/en/ibmwatson/developercloud/speech-to-text.html).<p />
    </description>
    <label>Speech to Text Bluemix Converter</label>
    <declare type="url" name="speech-to-text-url" initial-value="http://MYAPPLICATION.mybluemix.net/api/recognize">
      <label>Bluemix application REST endpoint</label>
      <description>Enter the REST endpoint provided by your Bluemix application.
      </description>
    </declare>
    <declare type="positive-int" name="default-timeout" initial-value="90" units="seconds">
      <label>Request timeout</label>
      <description>This sets the amount of time, in seconds, to wait for a response from the API call.</description>
    </declare>
    <declare type="string" name="proxy-host-port">
      <label>Proxy server (host:port)</label>
      <description>This sets a proxy server through which all Bluemix application calls will be directed.  It is recommended that a local caching proxy be used to improve performance and reduce the total number of Bluemix application calls.  Specify "" to override a system proxy with no proxy.</description>
    </declare>
    <declare type="user-password" name="proxy-user-pass">
      <label>Proxy username and password</label>
      <description>Provide the credentials used to authenticate to the proxy server configured above.</description>
    </declare>
    <declare type="flag" name="debug">
      <label>Enable debug contents</label>
      <description>If debug contents are enabled, then if the Speech to Text service returned an error, a content containing the error message will be added to the document.  This is useful for debugging, but it may not be as valuable in your final crawl.</description>
    </declare>
  </prototype>
  <declare name="platform" type="string" />
  <set-var name="platform">
    <value-of select="viv:system-information()/platform" />
  </set-var>
  <converter type-in="unknown" type-out="text/speech-to-text-transcript" timing-name="Speech to Text - 1. Send flac files to service">
    <converter-test what="url" how="wc-set">*.flac</converter-test>
    <converter-execute>curl -k --max-time <value-of-var name="default-timeout" /> <if-var name="proxy-host-port">--proxy <value-of-var name="proxy-host-port" /> </if-var><if-var name="proxy-user-pass">--proxy-user <value-of-var name="proxy-user-pass" /> </if-var> --data-binary @%source_file -o %target_file "<value-of-var name="speech-to-text-url" />"</converter-execute>
  </converter>
  <converter type-in="text/speech-to-text-transcript" type-out="application/vxml-unnormalized" timing-name="Speech to Text - 2. Transcript to VXML" >
    <parser type="xsl">
    <call-function name="xsl-parser-variable">
      <with name="name">debug</with>
      <with name="value">
        <if-var name="debug">
          <value-of-var name="debug" />
        </if-var>
      </with>
    </call-function><![CDATA[
<xsl:template match="/">
<xsl:variable name="r" select="/" />
  <document>
  <!-- check the results from the API and add appropriate contents -->
  <xsl:choose>
    <xsl:when test="$r/results/status = 'OK'" >
      <xsl:for-each select="$r/results/transcript" >
        <!-- We add one content per transcript -->
        <content name="speech-to-text-transcript" >
          <xsl:value-of select="./text()" />
        </content>
      </xsl:for-each>
    </xsl:when>
    <xsl:otherwise>
      <xsl:call-template name="show-debug-information">
        <xsl:with-param name="result" select="$r" />
        <xsl:with-param name="is-debug" select="$debug" />
        <xsl:with-param name="label">speech-to-text</xsl:with-param>
      </xsl:call-template>
    </xsl:otherwise>
  </xsl:choose>
  </document>
</xsl:template>

<xsl:template name="show-debug-information">
  <xsl:param name="result" />
  <xsl:param name="is-debug" />
  <xsl:param name="label" />
  <xsl:if test="$is-debug" >
    <content name="debug-{$label}-service-error" action="none" type="text">
      <xsl:value-of select="$result/results/statusInfo" />
    </content>
  </xsl:if>
</xsl:template>
]]></parser>
  </converter>
</function>