Lines Matching defs:PASS1_BITS
115 * The outputs of the first pass are scaled up by PASS1_BITS bits so that
117 * require BITS_IN_JSAMPLE + PASS1_BITS + 3 bits; this fits in a 16-bit word
122 * have BITS_IN_JSAMPLE + CONST_BITS + PASS1_BITS <= 26. Error analysis
127 #define PASS1_BITS 2
129 #define PASS1_BITS 1 /* lose a little precision to avoid overflow */
221 /* furthermore, we scale the results by 2**PASS1_BITS. */
252 DCTELEM dcval = (DCTELEM) (d0 << PASS1_BITS);
577 dataptr[0] = (DCTELEM) DESCALE(tmp10 + tmp3, CONST_BITS-PASS1_BITS);
578 dataptr[7] = (DCTELEM) DESCALE(tmp10 - tmp3, CONST_BITS-PASS1_BITS);
579 dataptr[1] = (DCTELEM) DESCALE(tmp11 + tmp2, CONST_BITS-PASS1_BITS);
580 dataptr[6] = (DCTELEM) DESCALE(tmp11 - tmp2, CONST_BITS-PASS1_BITS);
581 dataptr[2] = (DCTELEM) DESCALE(tmp12 + tmp1, CONST_BITS-PASS1_BITS);
582 dataptr[5] = (DCTELEM) DESCALE(tmp12 - tmp1, CONST_BITS-PASS1_BITS);
583 dataptr[3] = (DCTELEM) DESCALE(tmp13 + tmp0, CONST_BITS-PASS1_BITS);
584 dataptr[4] = (DCTELEM) DESCALE(tmp13 - tmp0, CONST_BITS-PASS1_BITS);
591 /* and also undo the PASS1_BITS scaling. */
924 CONST_BITS+PASS1_BITS+3);
926 CONST_BITS+PASS1_BITS+3);
928 CONST_BITS+PASS1_BITS+3);
930 CONST_BITS+PASS1_BITS+3);
932 CONST_BITS+PASS1_BITS+3);
934 CONST_BITS+PASS1_BITS+3);
936 CONST_BITS+PASS1_BITS+3);
938 CONST_BITS+PASS1_BITS+3);
959 /* furthermore, we scale the results by 2**PASS1_BITS. */
986 DCTELEM dcval = (DCTELEM) (d0 << PASS1_BITS);
1048 dataptr[0] = (DCTELEM) DESCALE(tmp10, CONST_BITS-PASS1_BITS);
1049 dataptr[1] = (DCTELEM) DESCALE(tmp11, CONST_BITS-PASS1_BITS);
1050 dataptr[2] = (DCTELEM) DESCALE(tmp12, CONST_BITS-PASS1_BITS);
1051 dataptr[3] = (DCTELEM) DESCALE(tmp13, CONST_BITS-PASS1_BITS);
1058 /* and also undo the PASS1_BITS scaling. */
1126 dataptr[DCTSTRIDE*0] = tmp10 >> (CONST_BITS+PASS1_BITS+3);
1127 dataptr[DCTSTRIDE*1] = tmp11 >> (CONST_BITS+PASS1_BITS+3);
1128 dataptr[DCTSTRIDE*2] = tmp12 >> (CONST_BITS+PASS1_BITS+3);
1129 dataptr[DCTSTRIDE*3] = tmp13 >> (CONST_BITS+PASS1_BITS+3);