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<p class="MsoNormal" style="text-align:justify">Hi all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am working on a project related to MFX part of Gen7 GPU. I am working on dumping the input commands and data being passed to MFX pipeline while decoding.
<o:p></o:p></p>
<p class="MsoNormal">And to dump the decoded output data from the MFX pipeline. I am using mplayer to decode the h264 file with vaapi support to use the MFX pipeline.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have modified the intel_driver code - gen7_mfd.c file, and I am able to dump the input commands and data being sent to the MFX into a file.<o:p></o:p></p>
<p class="MsoNormal">Now I need to dump the decoded output of the MFX pipeline. I am not able to find it in user space intel-driver and drm driver code.
<o:p></o:p></p>
<p class="MsoNormal">I believe we need to modify the drm kernel driver code for dumping the decoded output data.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It will be really helpful if anyone can provide me information on where to modify the drm kernel driver code to dump the following data<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>The output of the current decoded frame. <o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>The output of the decoded motion vectors of the current frame. The decoded motion vector will be stored in address passed in “<b>MFX_AVC_DIRECTMODE_STATE”</b> command.<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>The motion vector information for the reference frame needed for decoding the current frame. This information will be in the address passed in
<b>“MFX_AVC_REF_IDX_STATE” command.</b><o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="mso-list:Ignore">4.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>The decoder reference picture data used for motion compensation. These data can be read from the “<b>MFX_PIPE_BUF_ADDR_STATE
</b>“ command. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Please let me know if you have any questions.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks in advance.<o:p></o:p></p>
<p class="MsoNormal">Srinath<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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