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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-GB">I use a control source to fade in an audio stream when my pipeline is started.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">The fade in works as expected (see code).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> GstControlSource* pCtrlSource = gst_interpolation_control_source_new();<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> g_object_set(pCtrlSource, "mode", GST_INTERPOLATION_MODE_LINEAR, NULL);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> gst_object_add_control_binding(GST_OBJECT_CAST(m_pElVolume), gst_direct_control_binding_new(GST_OBJECT_CAST(m_pElVolume), "volume", pCtrlSource));<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> GstTimedValueControlSource *tv_csource = (GstTimedValueControlSource *) pCtrlSource;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> gst_timed_value_control_source_set(tv_csource, 0 * GST_MSECOND, 0.0);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> gst_timed_value_control_source_set(tv_csource, iFadeInMs * GST_MSECOND, 0.0);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> gst_timed_value_control_source_set(tv_csource, (iFadeInMs + iFADE_RAMP_TIM_MS) * GST_MSECOND, 0.10);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> </span>gst_object_unref(pCtrlSource);<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-GB">There is another function which is triggered from outside some minutes later which tries to reduce the volume to 50%.<br>
Therefore I directly set the volume property:<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span lang="EN-GB">g_object_set(G_OBJECT(m_pElVolume), "volume", 0.5, NULL);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span lang="EN-GB">But nothing happens. If I remove the control source (just uncomment code above) reducing the volume works as expected.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span lang="EN-GB">I guess that I have to remove or destroy something after the fade in but I have no idea.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span lang="EN-GB">Any ideas?<o:p></o:p></span></p>
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