https://community.nxp.com/t5/i-MX-Processors/Understanding-Volume-Control-Mechanisms-in-Qt-Multimedia-for/m-p/1857670#M223187 <DIV style="direction: ltr; border-width: 100%;"> <DIV style="direction: ltr; margin-top: 0in; margin-left: 0in; width: 3.1638in;"> <DIV style="direction: ltr; margin-top: 0in; margin-left: 0in; width: 3.1638in;"> <P style="margin: 0in; font-family: Calibri; font-size: 11.0pt;"><FONT face="arial,helvetica,sans-serif" size="3">Hello,</FONT></P> <P style="margin: 0in; font-family: Calibri; font-size: 11.0pt;">&nbsp;</P> <P style="margin: 0in; font-family: Calibri; font-size: 11.0pt;"><FONT face="arial,helvetica,sans-serif" size="3">I suggest you take a look on the next <A href="https://doc.qt.io/qt-5/qaudiooutput.html" target="_blank">link</A>.</FONT></P> <P style="margin: 0in; font-family: Calibri; font-size: 11.0pt;">&nbsp;</P> <P style="margin: 0in; font-family: Calibri; font-size: 11.0pt;"><FONT face="arial,helvetica,sans-serif" size="3">Maybe you should consult directly with Qt</FONT></P> <P style="margin: 0in; font-family: Calibri; font-size: 11.0pt;">&nbsp;</P> <P style="margin: 0in; font-family: Calibri; font-size: 11.0pt;"><FONT face="arial,helvetica,sans-serif" size="3">Best regards.</FONT></P> </DIV> </DIV> </DIV> Tue, 30 Apr 2024 15:36:46 GMT JorgeCas 2024-04-30T15:36:46Z https://community.nxp.com/t5/i-MX-Processors/Understanding-Volume-Control-Mechanisms-in-Qt-Multimedia-for/m-p/1857494#M223168 <DIV class=""><DIV class=""><DIV class=""><P>Hello,</P><P>I have successfully integrated the SGTL5000 audio codec into an iMX6 System-on-Module (SOM). Qt Multimedia is utilized to control the codec's volume, and overall, the system functions smoothly. However, I am intrigued about the process by which Qt Multimedia alters the volume settings.</P><P>Upon monitoring the value in the codec's volume register, I've noticed that different values are written to the volume register when I adjust the volume using the amixer command (amixer sset PCM 100%). However, when I attempt to modify the volume using Qt Multimedia, the value in the volume register remains unchanged.</P><P>I am seeking clarification on how Qt Multimedia communicates with the audio codec driver to effect volume changes. Understanding this process in greater detail would greatly assist me in optimizing the integration of the audio codec into our system.</P><P>Thank you.</P></DIV></DIV></DIV> Tue, 30 Apr 2024 10:59:47 GMT https://community.nxp.com/t5/i-MX-Processors/Understanding-Volume-Control-Mechanisms-in-Qt-Multimedia-for/m-p/1857494#M223168 Niranj 2024-04-30T10:59:47Z https://community.nxp.com/t5/i-MX-Processors/Understanding-Volume-Control-Mechanisms-in-Qt-Multimedia-for/m-p/1857670#M223187 <DIV style="direction: ltr; border-width: 100%;"> <DIV style="direction: ltr; margin-top: 0in; margin-left: 0in; width: 3.1638in;"> <DIV style="direction: ltr; margin-top: 0in; margin-left: 0in; width: 3.1638in;"> <P style="margin: 0in; font-family: Calibri; font-size: 11.0pt;"><FONT face="arial,helvetica,sans-serif" size="3">Hello,</FONT></P> <P style="margin: 0in; font-family: Calibri; font-size: 11.0pt;">&nbsp;</P> <P style="margin: 0in; font-family: Calibri; font-size: 11.0pt;"><FONT face="arial,helvetica,sans-serif" size="3">I suggest you take a look on the next <A href="https://doc.qt.io/qt-5/qaudiooutput.html" target="_blank">link</A>.</FONT></P> <P style="margin: 0in; font-family: Calibri; font-size: 11.0pt;">&nbsp;</P> <P style="margin: 0in; font-family: Calibri; font-size: 11.0pt;"><FONT face="arial,helvetica,sans-serif" size="3">Maybe you should consult directly with Qt</FONT></P> <P style="margin: 0in; font-family: Calibri; font-size: 11.0pt;">&nbsp;</P> <P style="margin: 0in; font-family: Calibri; font-size: 11.0pt;"><FONT face="arial,helvetica,sans-serif" size="3">Best regards.</FONT></P> </DIV> </DIV> </DIV> Tue, 30 Apr 2024 15:36:46 GMT https://community.nxp.com/t5/i-MX-Processors/Understanding-Volume-Control-Mechanisms-in-Qt-Multimedia-for/m-p/1857670#M223187 JorgeCas 2024-04-30T15:36:46Z