/p>
<p>This is a function pointer to an application-provided function that will be called each time a section of the image is fully decoded in <a class="el" href="group__decfuncs.html#ga31c814bf09b2232aff69c57ae20f04eb" title="Submits a packet containing encoded video data to the decoder.">th_decode_packetin()</a>. This allows the application to process the section immediately, while it is still in cache. Note that the frame is decoded bottom to top, so <em>_yfrag0</em> will steadily decrease with each call