Lines Matching refs:idct
277 * scale up the chroma components via IDCT scaling rather than upsampling.
303 /* Size in samples, after IDCT scaling */
383 * limiting step (just after the IDCT), a wildly out-of-range value is
386 * post-IDCT limiting thus:
392 * For the post-IDCT step, we want to convert the data from signed to unsigned
394 * So the post-IDCT limiting table ends up looking like this:
402 * We can save some space by overlapping the start of the post-IDCT table
403 * with the simpler range limiting table. The post-IDCT table begins at
424 table += CENTERJSAMPLE; /* Point to where post-IDCT table starts */
425 /* End of simple table, rest of first half of post-IDCT table */
428 /* Second half of post-IDCT table */
634 (*cinfo->idct->start_pass) (cinfo);
