ps2 optimizations update patch by (Leon van Stuivenberg <leonvs at iae dot nl>)

Originally committed as revision 996 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 308 insertions, 188 deletions

diff --git a/libavcodec/ps2/idct_mmi.c b/libavcodec/ps2/idct_mmi.c
index e80e124824..62bb6c4a11 100644
--- a/libavcodec/ps2/idct_mmi.c
+++ b/libavcodec/ps2/idct_mmi.c
@@ -12,217 +12,337 @@
   mmi port by leonvs@iae.nl
 */  
 #include "../common.h"
+#include "../dsputil.h"
 #include "mmi.h"
 
 #define BITS_INV_ACC	5	// 4 or 5 for IEEE
 #define SHIFT_INV_ROW	(16 - BITS_INV_ACC)
 #define SHIFT_INV_COL   (1 + BITS_INV_ACC)
 
-// assume SHIFT_INV_ROW == 11
-static int roundertable[8][4] align16 = {
-    { 0x103ff, 0x103ff, 0x103ff, 0x103ff },
-    { 1023,  1023,  1023,  1023}
-};
-
-
-#define TAB_i_04	0
-#define TAB_i_17	64
-#define TAB_i_26	128
-#define TAB_i_35	192
-
-static short rowtable[4][32] align16 = {
-    {
-     16384, 16384, 22725, 12873, 21407, 8867, 19266, 4520,
-     16384, -16383, 19266, -22724, 8867, -21406, -4519, -12872,
-     16384, -16383, 12873, 4520, -8866, 21407, -22724, 19266,
-     16384, 16384, 4520, 19266, -21406, -8866, -12872, -22724},
-    {
-     22725, 22725, 31521, 17855, 29692, 12299, 26722, 6270,
-     22725, -22724, 26722, -31520, 12299, -29691, -6269, -17854,
-     22725, -22724, 17855, 6270, -12298, 29692, -31520, 26722,
-     22725, 22725, 6270, 26722, -29691, -12298, -17854, -31520},
-    {
-     21407, 21407, 29692, 16819, 27969, 11585, 25172, 5906,
-     21407, -21406, 25172, -29691, 11585, -27968, -5905, -16818,
-     21407, -21406, 16819, 5906, -11584, 27969, -29691, 25172,
-     21407, 21407, 5906, 25172, -27968, -11584, -16818, -29691},
-    {
-     19266, 19266, 26722, 15137, 25172, 10426, 22654, 5315,
-     19266, -19265, 22654, -26721, 10426, -25171, -5314, -15136,
-     19266, -19265, 15137, 5315, -10425, 25172, -26721, 22654,
-     19266, 19266, 5315, 22654, -25171, -10425, -15136, -26721}
-};
-
-
-#define TG_3_16_minus_one	0
-#define ONE_plus_tg_3_16	16
-#define ONE_plus_tg_1_16	32
-#define TG_1_16_minus_one	48
-#define TG_2_16_minus_one	64
-#define ONE_plus_tg_2_16	80
-#define ZERO_ocos_4_16		96
-
 #define TG1	6518
 #define TG2	13573
 #define TG3	21895
-#define MN1	-32768
-#define PL1	32768
 #define CS4	23170
 
-static short coltable[7][8] align16 = {
-    { MN1,  TG3,  MN1,  TG3,  MN1,  TG3,  MN1,  TG3},
-    {-TG3, -PL1, -TG3, -PL1, -TG3, -PL1, -TG3, -PL1},
-    {-TG1, -PL1, -TG1, -PL1, -TG1, -PL1, -TG1, -PL1},
-    { MN1,  TG1,  MN1,  TG1,  MN1,  TG1,  MN1,  TG1},
-    { MN1,  TG2,  MN1,  TG2,  MN1,  TG2,  MN1,  TG2},
-    {-TG2, -PL1, -TG2, -PL1, -TG2, -PL1, -TG2, -PL1},
-    { CS4,    0,  CS4,    0,  CS4,    0,  CS4,    0}
+#define ROUNDER_0	0
+#define ROUNDER_1	16
+
+#define TAB_i_04	(32+0)
+#define TAB_i_17	(32+64)
+#define TAB_i_26	(32+128)
+#define TAB_i_35	(32+192)
+
+#define TG_1_16		(32+256+0)
+#define TG_2_16		(32+256+16)
+#define TG_3_16		(32+256+32)
+#define COS_4_16	(32+256+48)
+
+#define CLIPMAX		(32+256+64+0)
+
+static short consttable[] align16 = {
+/* rounder 0*/	// assume SHIFT_INV_ROW == 11
+ 0x3ff, 1, 0x3ff, 1, 0x3ff, 1, 0x3ff, 1,
+/* rounder 1*/
+ 0x3ff, 0, 0x3ff, 0, 0x3ff, 0, 0x3ff, 0,
+/* row 0/4*/
+ 16384,  21407, -16384, -21407,  22725,  19266, -22725, -12873, 
+  8867,  16384,   8867,  16384,   4520,  12873,  -4520,  19266, 
+ 16384,  -8867,  16384,  -8867,  12873, -22725,  19266, -22725, 
+ 21407, -16384, -21407,  16384,  19266,   4520, -12873,   4520, 
+/* row 1/7*/
+ 22725,  29692, -22725, -29692,  31521,  26722, -31521, -17855, 
+ 12299,  22725,  12299,  22725,   6270,  17855,  -6270,  26722, 
+ 22725, -12299,  22725, -12299,  17855, -31521,  26722, -31521, 
+ 29692, -22725, -29692,  22725,  26722,   6270, -17855,   6270, 
+/* row 2/6*/
+ 21407,  27969, -21407, -27969,  29692,  25172, -29692, -16819, 
+ 11585,  21407,  11585,  21407,   5906,  16819,  -5906,  25172, 
+ 21407, -11585,  21407, -11585,  16819, -29692,  25172, -29692, 
+ 27969, -21407, -27969,  21407,  25172,   5906, -16819,   5906, 
+/*row 3/5*/
+ 19266,  25172, -19266, -25172,  26722,  22654, -26722, -15137, 
+ 10426,  19266,  10426,  19266,   5315,  15137,  -5315,  22654, 
+ 19266, -10426,  19266, -10426,  15137, -26722,  22654, -26722, 
+ 25172, -19266, -25172,  19266,  22654,   5315, -15137,   5315,
+/*column constants*/
+ TG1, TG1, TG1, TG1, TG1, TG1, TG1, TG1,
+ TG2, TG2, TG2, TG2, TG2, TG2, TG2, TG2,
+ TG3, TG3, TG3, TG3, TG3, TG3, TG3, TG3,
+ CS4, CS4, CS4, CS4, CS4, CS4, CS4, CS4,
+/* clamp */
+ 255, 255, 255, 255, 255, 255, 255, 255
 };
 
-#define	noprevh(rt, rd)
-
-
-#define DCT_8_INV_ROW1(rowoff, taboff, rnd, outreg) { \
-\
-	lq($4, rowoff, $16);	/* r16 = x7  x6  x5  x4  x3  x2  x1  x0 */ \
-	lq($24, 0+taboff, $17);	/* r17 = w19 w17 w3  w1  w18 w16 w2  w0 */ \
-	pinth($16, $16, $16);	/* r16 = x7  x3  x6  x2  x5  x1  x4  x0 */ \
-	phmadh($17, $16, $17);	/* r17 = (x7*w19+x3*w17)b0'' (x6*w3+x2*w1)a0'' (x5*w18+x1*w16)b0' (x4*w2+x0*w0)a0' */ \
-	lq($24, 16+taboff, $18);/* r18 = w23 w21 w7  w5  w22 w20 w6  w4 */ \
-	lq($24, 32+taboff, $19);/* r19 = w27 w25 w11 w9  w26 w24 w10 w8 */ \
-	lq($24, 48+taboff, $20);/* r20 = w31 w29 w15 w13 w30 w28 w14 w12 */ \
-	phmadh($18, $16, $18);	/* r18 = (b1'')(a1'')(b1')(a1') */ \
-	pcpyud($17, $17, $21);	/* r21 = (b0'')(a0'')(b0'')(a0'') */ \
-	paddw($17, $21, $17);	/* r17 = (--)(--)(b0)(a0) */ \
-	phmadh($19, $16, $19);	/* r19 = (b2'')(a2'')(b2')(a2') */ \
-	pcpyud($18, $18, $21);	/* r21 = (b1'')(a1'')(b1'')(a1'') */ \
-	paddw($18, $21, $18);	/* r18 = (--)(--)(b1)(a1) */ \
-	pcpyud($19, $19, $21);	\
-	phmadh($20, $16, $20);	/* r12 = (b3'')(a3'')(b3')(a3') */ \
-	paddw($19, $21, $19);	/* r19 = (--)(--)(b2)(a2) */ \
-	pextlw($19, $17, $16);	/* r16 = (b2)(b0)(a2)(a0) */ \
-	pcpyud($20, $20, $21);	\
-	paddw($20, $21, $20);	/* r20 = (--)(--)(b3)(a3) */ \
-	pextlw($20, $18, $17);	/* r17 = (b3)(b1)(a3)(a1) */ \
-	pextlw($17, $16, $20);	/* r20 = (a3)(a2)(a1)(a0)" */ \
-	pextuw($17, $16, $21);	/* r21 = (b3)(b2)(b1)(b0) */ \
-	paddw($20, rnd, $20);	/* r20 = (a3)(a2)(a1)(a0) */\
-	paddw($20, $21, $17);	/* r17 = ()()()(a0+b0) */ \
-	psubw($20, $21, $18);	/* r18 = ()()()(a0-b0) */ \
+
+#define DCT_8_INV_ROW1(blk, rowoff, taboff, rnd, outreg) { \
+	lq(blk, rowoff, $16);	/* r16 = x7  x5  x3  x1  x6  x4  x2  x0 */ \
+	/*slot*/ \
+	lq($24, 0+taboff, $17);	/* r17 = w */ \
+	/*delay slot $16*/ \
+	lq($24, 16+taboff, $18);/* r18 = w */ \
+	prevh($16, $2);		/* r2  = x1  x3  x5  x7  x0  x2  x4  x6 */ \
+	lq($24, 32+taboff, $19);/* r19 = w */ \
+	phmadh($17, $16, $17);	/* r17 = b1"b0'a1"a0' */ \
+	lq($24, 48+taboff, $20);/* r20 = w */ \
+	phmadh($18, $2, $18);	/* r18 = b1'b0"a1'a0" */ \
+	phmadh($19, $16, $19);	/* r19 = b3"b2'a3"a2' */ \
+	phmadh($20, $2, $20);	/* r20 = b3'b2"a3'a2" */ \
+	paddw($17, $18, $17);	/* r17 = (b1)(b0)(a1)(a0) */ \
+	paddw($19, $20, $19);	/* r19 = (b3)(b2)(a3)(a2) */ \
+	pcpyld($19, $17, $18);	/* r18 = (a3)(a2)(a1)(a0) */ \
+	pcpyud($17, $19, $20);	/* r20 = (b3)(b2)(b1)(b0) */ \
+	paddw($18, rnd, $18);	/* r18 = (a3)(a2)(a1)(a0) */\
+	paddw($18, $20, $17);	/* r17 = ()()()(a0+b0) */ \
+	psubw($18, $20, $20);	/* r20 = ()()()(a0-b0) */ \
 	psraw($17, SHIFT_INV_ROW, $17); /* r17 = (y3 y2 y1 y0) */ \
-	psraw($18, SHIFT_INV_ROW, $18);	/* r18 = (y4 y5 y6 y7) */ \
-	ppach($18, $17, outreg);/* out = y4 y5 y6 y7 y3 y2 y1 y0  Note order */ \
+	psraw($20, SHIFT_INV_ROW, $20);	/* r20 = (y4 y5 y6 y7) */ \
+	ppach($20, $17, outreg);/* out = y4 y5 y6 y7 y3 y2 y1 y0  Note order */ \
+\
+	prevh(outreg, $2);	\
+	pcpyud($2, $2, $2);	\
+	pcpyld($2, outreg, outreg);	\
 }
 
 
-#define DCT_8_INV_COL4(pextop, blkoff, revop) { \
-	lq($24, TG_3_16_minus_one, $2);	/* r2  = (tn3)(-1) x 4 */	\
-	pextop($11, $13, $3);		/* r3  = (x3)(x5) x 4 */	\
-	lq($24, ONE_plus_tg_3_16, $16);	/* r16 = -((+1)(tn3)) x 4 */	\
-	phmadh($3, $2, $17);		/* r17 = (tm35) x 4 */		\
-	lq($24, ONE_plus_tg_1_16, $2);	/* r2  = -((+1)(tn1)) x 4 */	\
-	phmadh($3, $16, $18);		/* r18 = -(tp35) x 4 */		\
-	lq($24, TG_1_16_minus_one, $16);/* r16 = (tn1)(-1) x 4 */	\
-	pextop($9, $15, $3);		/* r3  = (x1)(x7) x 4 */	\
-	phmadh($3, $2, $19);						\
-	lq($24, ZERO_ocos_4_16, $2);	/* r2  = (0)(cos4) x 4 */	\
-	phmadh($3, $16, $20);		/* r20 = (tm17) x 4 */		\
-	psubw($0, $19, $19);		/* r19 = (tp17) x 4 */		\
-	paddw($19, $18, $3);		/* r3  = t1 */			\
-	paddw($20, $17, $16);		/* r16 = t2 */			\
-	psubw($20, $17, $23);		/* r23 = b3 */			\
-	psubw($19, $18, $20);		/* r20 = b0 */			\
-	paddw($3, $16, $17);		/* (t1+t2) */			\
-	psubw($3, $16, $18);		/* (t1-t2) */			\
-	psraw($17, 15, $17);						\
-	lq($24, TG_2_16_minus_one, $3);	/* r3  = (tn2)(-1) x 4 */	\
-	pmulth($17, $2, $21);		/* r21 = b1 */			\
-	psraw($18, 15, $18);						\
-	lq($24, ONE_plus_tg_2_16, $16);	/* r16 = -((+1)(tn2)) x 4 */	\
-	pmulth($18, $2, $22);		/* r22 = b2 */			\
-\
-	pextop($10, $14, $2);		/* r2  = (x2)(x6) x 4 */	\
-	phmadh($2, $3, $18);		/* r18 = (tm26) x 4 */		\
-	phmadh($2, $16, $19);		/* r19 = -(tp26) x 4 */		\
-	pextop($8, $0, $17);		/* r17 = (x0)(0) x 4 */		\
-	psraw($17, 1, $17);						\
-	pextop($12, $0, $16);		/* r16 = (x4)(0) x 4 */		\
-	psraw($16, 1, $16);						\
-	paddw($17, $16, $2);		/* r2  = tp04 */		\
-	psubw($17, $16, $3);		/* r3  = tm04 */		\
-	psubw($2, $19, $16);		/* r16 = a0 */			\
-	paddw($3, $18, $17);		/* r17 = a1 */			\
-	psubw($3, $18, $18);		/* r18 = a2 */			\
-	paddw($2, $19, $19);		/* r19 = a3 */			\
-\
-	paddw($16, $20, $2);	/* y0  a0+b0 */		\
-	psubw($16, $20, $16);	/* y7  a0-b0 */		\
-	psraw($2, SHIFT_INV_COL+15, $2);		\
-	psraw($16, SHIFT_INV_COL+15, $16);		\
-	ppach($0, $2, $2);				\
-	ppach($0, $16, $16);				\
-	revop($2, $2);					\
-	revop($16, $16);				\
-	sd3(2, 0+blkoff, 4); 				\
-	sd3(16, 112+blkoff, 4); 			\
-\
-	paddw($17, $21, $3);	/* y1  a1+b1 */		\
-	psubw($17, $21, $17);	/* y6  a1-b1 */		\
-	psraw($3, SHIFT_INV_COL+15, $3);		\
-	psraw($17, SHIFT_INV_COL+15, $17);		\
-	ppach($0, $3, $3);				\
-	ppach($0, $17, $17);			\
-	revop($3, $3);				\
-	revop($17, $17);			\
-	sd3(3, 16+blkoff, 4);			\
-	sd3(17, 96+blkoff, 4);			\
-\
-	paddw($18, $22, $2);	/* y2  a2+b2 */	\
-	psubw($18, $22, $18);	/* y5  a2-b2 */	\
-	psraw($2, SHIFT_INV_COL+15, $2);	\
-	psraw($18, SHIFT_INV_COL+15, $18);	\
-	ppach($0, $2, $2);			\
-	ppach($0, $18, $18);			\
-	revop($2, $2);				\
-	revop($18, $18);			\
-	sd3(2, 32+blkoff, 4);			\
-	sd3(18, 80+blkoff, 4);			\
-\
-	paddw($19, $23, $3);	/* y3  a3+b3 */	\
-	psubw($19, $23, $19);	/* y4  a3-b3 */	\
-	psraw($3, SHIFT_INV_COL+15, $3);	\
-	psraw($19, SHIFT_INV_COL+15, $19);	\
-	ppach($0, $3, $3);			\
-	ppach($0, $19, $19);			\
-	revop($3, $3);				\
-	revop($19, $19);			\
-	sd3(3, 48+blkoff, 4);			\
-	sd3(19, 64+blkoff, 4);			\
-}
+#define DCT_8_INV_COL8() \
+\
+	lq($24, TG_3_16, $2);	/* r2  = tn3 */	\
+\
+	pmulth($11, $2, $17);	/* r17 = x3 * tn3 (6420) */ \
+	psraw($17, 15, $17);	\
+	pmfhl_uw($3);		/* r3  = 7531 */	\
+	psraw($3, 15, $3);	\
+	pinteh($3, $17, $17);	/* r17 = x3 * tn3 */ \
+	psubh($17, $13, $17);	/* r17 = tm35 */	\
+\
+	pmulth($13, $2, $18);	/* r18 = x5 * tn3 (6420) */ \
+	psraw($18, 15, $18);	\
+	pmfhl_uw($3);		/* r3  = 7531 */	\
+	psraw($3, 15, $3);	\
+	pinteh($3, $18, $18);	/* r18 = x5 * tn3 */ \
+	paddh($18, $11, $18);	/* r18 = tp35 */	\
+\
+	lq($24, TG_1_16, $2);	/* r2  = tn1 */	\
+\
+	pmulth($15, $2, $19);	/* r19 = x7 * tn1 (6420) */ \
+	psraw($19, 15, $19);	\
+	pmfhl_uw($3);		/* r3  = 7531 */	\
+	psraw($3, 15, $3);	\
+	pinteh($3, $19, $19);	/* r19 = x7 * tn1 */ \
+	paddh($19, $9, $19);	/* r19 = tp17 */	\
+\
+	pmulth($9, $2, $20);	/* r20 = x1 * tn1 (6420) */ \
+	psraw($20, 15, $20);	\
+	pmfhl_uw($3);		/* r3  = 7531 */	\
+	psraw($3, 15, $3);	\
+	pinteh($3, $20, $20);	/* r20 = x1 * tn1 */ \
+	psubh($20, $15, $20);	/* r20 = tm17 */	\
+\
+	psubh($19, $18, $3);	/* r3  = t1 */	\
+	paddh($20, $17, $16);	/* r16 = t2 */	\
+	psubh($20, $17, $23);	/* r23 = b3 */	\
+	paddh($19, $18, $20);	/* r20 = b0 */	\
+\
+	lq($24, COS_4_16, $2);	/* r2  = cs4 */	\
+\
+	paddh($3, $16, $21);	/* r21 = t1+t2 */	\
+	psubh($3, $16, $22);	/* r22 = t1-t2 */	\
+\
+	pmulth($21, $2, $21);	/* r21 = cs4 * (t1+t2) 6420 */ \
+	psraw($21, 15, $21);	\
+	pmfhl_uw($3);		/* r3  = 7531 */	\
+	psraw($3, 15, $3);	\
+	pinteh($3, $21, $21);	/* r21 = b1 */	\
+\
+	pmulth($22, $2, $22);	/* r22 = cs4 * (t1-t2) 6420 */ \
+	psraw($22, 15, $22);	\
+	pmfhl_uw($3);		/* r3  = 7531 */	\
+	psraw($3, 15, $3);	\
+	pinteh($3, $22, $22);	/* r22 = b2 */	\
+\
+	lq($24, TG_2_16, $2);	/* r2  = tn2 */	\
+\
+	pmulth($10, $2, $17);	/* r17 = x2 * tn2 (6420) */ \
+	psraw($17, 15, $17);	\
+	pmfhl_uw($3);		/* r3  = 7531 */	\
+	psraw($3, 15, $3);	\
+	pinteh($3, $17, $17);	/* r17 = x3 * tn3 */ \
+	psubh($17, $14, $17);	/* r17 = tm26 */	\
+\
+	pmulth($14, $2, $18);	/* r18 = x6 * tn2 (6420) */ \
+	psraw($18, 15, $18);	\
+	pmfhl_uw($3);		/* r3  = 7531 */	\
+	psraw($3, 15, $3);	\
+	pinteh($3, $18, $18);	/* r18 = x6 * tn2 */ \
+	paddh($18, $10, $18);	/* r18 = tp26 */	\
+\
+	paddh($8, $12, $2);	/* r2  = tp04 */	\
+	psubh($8, $12, $3);	/* r3  = tm04 */	\
+\
+	paddh($2, $18, $16);	/* r16 = a0 */			\
+	psubh($2, $18, $19);	/* r19 = a3 */			\
+	psubh($3, $17, $18);	/* r18 = a2 */			\
+	paddh($3, $17, $17);	/* r17 = a1 */
+
+
+#define DCT_8_INV_COL8_STORE(blk) \
+\
+	paddh($16, $20, $2);	/* y0  a0+b0 */		\
+	psubh($16, $20, $16);	/* y7  a0-b0 */		\
+	psrah($2, SHIFT_INV_COL, $2);		\
+	psrah($16, SHIFT_INV_COL, $16);		\
+	sq($2, 0, blk); 			\
+	sq($16, 112, blk); 			\
+\
+	paddh($17, $21, $3);	/* y1  a1+b1 */		\
+	psubh($17, $21, $17);	/* y6  a1-b1 */		\
+	psrah($3, SHIFT_INV_COL, $3);		\
+	psrah($17, SHIFT_INV_COL, $17);		\
+	sq($3, 16, blk);			\
+	sq($17, 96, blk);			\
+\
+	paddh($18, $22, $2);	/* y2  a2+b2 */	\
+	psubh($18, $22, $18);	/* y5  a2-b2 */	\
+	psrah($2, SHIFT_INV_COL, $2);	\
+	psrah($18, SHIFT_INV_COL, $18);	\
+	sq($2, 32, blk);			\
+	sq($18, 80, blk);			\
+\
+	paddh($19, $23, $3);	/* y3  a3+b3 */	\
+	psubh($19, $23, $19);	/* y4  a3-b3 */	\
+	psrah($3, SHIFT_INV_COL, $3);	\
+	psrah($19, SHIFT_INV_COL, $19);	\
+	sq($3, 48, blk);			\
+	sq($19, 64, blk);
+
+
+
+#define DCT_8_INV_COL8_PMS() \
+	paddh($16, $20, $2);	/* y0  a0+b0 */		\
+	psubh($16, $20, $20);	/* y7  a0-b0 */		\
+	psrah($2, SHIFT_INV_COL, $16);		\
+	psrah($20, SHIFT_INV_COL, $20);		\
+\
+	paddh($17, $21, $3);	/* y1  a1+b1 */		\
+	psubh($17, $21, $21);	/* y6  a1-b1 */		\
+	psrah($3, SHIFT_INV_COL, $17);		\
+	psrah($21, SHIFT_INV_COL, $21);		\
+\
+	paddh($18, $22, $2);	/* y2  a2+b2 */	\
+	psubh($18, $22, $22);	/* y5  a2-b2 */	\
+	psrah($2, SHIFT_INV_COL, $18);	\
+	psrah($22, SHIFT_INV_COL, $22);	\
+\
+	paddh($19, $23, $3);	/* y3  a3+b3 */	\
+	psubh($19, $23, $23);	/* y4  a3-b3 */	\
+	psrah($3, SHIFT_INV_COL, $19);	\
+	psrah($23, SHIFT_INV_COL, $23);
+
+#define PUT(rs) \
+	pminh(rs, $11, $2);	\
+    	pmaxh($2, $0, $2);	\
+	ppacb($0, $2, $2); \
+	sd3(2, 0, 4); \
+	__asm__ __volatile__ ("add $4, $5, $4");
+
+#define DCT_8_INV_COL8_PUT() \
+    	PUT($16);		\
+    	PUT($17);		\
+    	PUT($18);		\
+    	PUT($19);		\
+    	PUT($23);		\
+    	PUT($22);		\
+    	PUT($21);		\
+    	PUT($20);
+
+#define ADD(rs) \
+    ld3(4, 0, 2); \
+    pextlb($0, $2, $2); \
+    paddh($2, rs, $2); \
+    pminh($2, $11, $2);	\
+    pmaxh($2, $0, $2);	\
+    ppacb($0, $2, $2); \
+    sd3(2, 0, 4); \
+    __asm__ __volatile__ ("add $4, $5, $4");
+
+/*fixme: schedule*/
+#define DCT_8_INV_COL8_ADD() \
+    	ADD($16);		\
+    	ADD($17);		\
+    	ADD($18);		\
+    	ADD($19);		\
+    	ADD($23);		\
+    	ADD($22);		\
+    	ADD($21);		\
+    	ADD($20);
 
 
 void ff_mmi_idct(int16_t * block)
 {
     /* $4 = block */
-    __asm__ __volatile__("la $7, %0"::"m"(roundertable[0][0]));
-    __asm__ __volatile__("la $24, %0"::"m"(rowtable[0][0]));
-    lq($7, 0, $6);
-    lq($7, 16, $7);
-    DCT_8_INV_ROW1(0, TAB_i_04, $6, $8);
-    DCT_8_INV_ROW1(16, TAB_i_17, $7, $9);
-    DCT_8_INV_ROW1(32, TAB_i_26, $7, $10);
-    DCT_8_INV_ROW1(48, TAB_i_35, $7, $11);
-    DCT_8_INV_ROW1(64, TAB_i_04, $7, $12);
-    DCT_8_INV_ROW1(80, TAB_i_35, $7, $13);
-    DCT_8_INV_ROW1(96, TAB_i_26, $7, $14);
-    DCT_8_INV_ROW1(112, TAB_i_17, $7, $15);
-
-    __asm__ __volatile__("la $24, %0"::"m"(coltable[0][0]));
-    DCT_8_INV_COL4(pextlh, 0, noprevh);
-    DCT_8_INV_COL4(pextuh, 8, prevh);
+    __asm__ __volatile__("la $24, %0"::"m"(consttable[0]));
+    lq($24, ROUNDER_0, $8);
+    lq($24, ROUNDER_1, $7);
+    DCT_8_INV_ROW1($4, 0, TAB_i_04, $8, $8);
+    DCT_8_INV_ROW1($4, 16, TAB_i_17, $7, $9);
+    DCT_8_INV_ROW1($4, 32, TAB_i_26, $7, $10);
+    DCT_8_INV_ROW1($4, 48, TAB_i_35, $7, $11);
+    DCT_8_INV_ROW1($4, 64, TAB_i_04, $7, $12);
+    DCT_8_INV_ROW1($4, 80, TAB_i_35, $7, $13);
+    DCT_8_INV_ROW1($4, 96, TAB_i_26, $7, $14);
+    DCT_8_INV_ROW1($4, 112, TAB_i_17, $7, $15);
+    DCT_8_INV_COL8();
+    DCT_8_INV_COL8_STORE($4);
+ 
+    //let savedtemp regs be saved
+    __asm__ __volatile__(" ":::"$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23");
+}
+
+
+void ff_mmi_idct_put(UINT8 *dest, int line_size, DCTELEM *block)
+{
+    /* $4 = dest, $5 = line_size, $6 = block */
+    __asm__ __volatile__("la $24, %0"::"m"(consttable[0]));
+    lq($24, ROUNDER_0, $8);
+    lq($24, ROUNDER_1, $7);
+    DCT_8_INV_ROW1($6, 0, TAB_i_04, $8, $8);
+    DCT_8_INV_ROW1($6, 16, TAB_i_17, $7, $9);
+    DCT_8_INV_ROW1($6, 32, TAB_i_26, $7, $10);
+    DCT_8_INV_ROW1($6, 48, TAB_i_35, $7, $11);
+    DCT_8_INV_ROW1($6, 64, TAB_i_04, $7, $12);
+    DCT_8_INV_ROW1($6, 80, TAB_i_35, $7, $13);
+    DCT_8_INV_ROW1($6, 96, TAB_i_26, $7, $14);
+    DCT_8_INV_ROW1($6, 112, TAB_i_17, $7, $15);
+    DCT_8_INV_COL8();
+    lq($24, CLIPMAX, $11);
+    DCT_8_INV_COL8_PMS();
+    DCT_8_INV_COL8_PUT();
+
+    //let savedtemp regs be saved
+    __asm__ __volatile__(" ":::"$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23");
+}
+
+
+void ff_mmi_idct_add(UINT8 *dest, int line_size, DCTELEM *block)
+{
+    /* $4 = dest, $5 = line_size, $6 = block */
+    __asm__ __volatile__("la $24, %0"::"m"(consttable[0]));
+    lq($24, ROUNDER_0, $8);
+    lq($24, ROUNDER_1, $7);
+    DCT_8_INV_ROW1($6, 0, TAB_i_04, $8, $8);
+    DCT_8_INV_ROW1($6, 16, TAB_i_17, $7, $9);
+    DCT_8_INV_ROW1($6, 32, TAB_i_26, $7, $10);
+    DCT_8_INV_ROW1($6, 48, TAB_i_35, $7, $11);
+    DCT_8_INV_ROW1($6, 64, TAB_i_04, $7, $12);
+    DCT_8_INV_ROW1($6, 80, TAB_i_35, $7, $13);
+    DCT_8_INV_ROW1($6, 96, TAB_i_26, $7, $14);
+    DCT_8_INV_ROW1($6, 112, TAB_i_17, $7, $15);
+    DCT_8_INV_COL8();
+    lq($24, CLIPMAX, $11);
+    DCT_8_INV_COL8_PMS();
+    DCT_8_INV_COL8_ADD();
 
     //let savedtemp regs be saved
-    __asm__ __volatile__(" ":::"$16", "$17", "$18", "$19", "$20", "$21",
-			 "$22", "$23", "$6", "$7");
+    __asm__ __volatile__(" ":::"$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23");
 }