simple_idct_mmx.c

这是著名的TCPMP播放器在WINDWOWS,和WINCE下编译通过的源程序.笔者对其中的LIBMAD库做了针对ARM MPU的优化. 并增加了词幕功能.

	"pmaddwd 104(%2), %%mm3			\n\t" /* -C1R7+C3R5	-C1r7+C3r5 */\
	"paddd %%mm7, %%mm4			\n\t" /* B2		b2 */\
	"paddd %%mm4, %%mm2			\n\t" /* A2+B2		a2+b2 */\
	"psubd %%mm4, %%mm5			\n\t" /* a2-B2		a2-b2 */\
	"psrad $" #shift ", %%mm2		\n\t"\
	"psrad $" #shift ", %%mm5		\n\t"\
	"movq %%mm6, %%mm4			\n\t" /* A3		a3 */\
	"paddd %%mm0, %%mm3			\n\t" /* B3		b3 */\
	"paddd %%mm3, %%mm6			\n\t" /* A3+B3		a3+b3 */\
	"psubd %%mm3, %%mm4			\n\t" /* a3-B3		a3-b3 */\
	"psrad $" #shift ", %%mm6		\n\t"\
	"psrad $" #shift ", %%mm4		\n\t"\
	"packssdw %%mm2, %%mm2			\n\t" /* A2+B2	a2+b2 */\
	"packssdw %%mm6, %%mm6			\n\t" /* A3+B3	a3+b3 */\
	"movd %%mm2, 32+" #dst "		\n\t"\
	"packssdw %%mm4, %%mm4			\n\t" /* A3-B3	a3-b3 */\
	"packssdw %%mm5, %%mm5			\n\t" /* A2-B2	a2-b2 */\
	"movd %%mm6, 48+" #dst "		\n\t"\
	"movd %%mm4, 64+" #dst "		\n\t"\
	"movd %%mm5, 80+" #dst "		\n\t"

//IDCT(  src0,   src4,   src1,    src5,    dst, rounder, shift)
IDCT(    (%1), 64(%1), 32(%1),  96(%1),  0(%0),/nop, 20)
IDCT(   8(%1), 72(%1), 40(%1), 104(%1),  4(%0),/nop, 20)
IDCT(  16(%1), 80(%1), 48(%1), 112(%1),  8(%0),/nop, 20)
IDCT(  24(%1), 88(%1), 56(%1), 120(%1), 12(%0),/nop, 20)
	"jmp 9f					\n\t"

	"#.balign 16				\n\t"\
	"3:					\n\t"
#undef IDCT
#define IDCT(src0, src4, src1, src5, dst, rounder, shift) \
	"movq " #src0 ", %%mm0			\n\t" /* R4	R0	r4	r0 */\
	"movq " #src1 ", %%mm2			\n\t" /* R3	R1	r3	r1 */\
	"movq 16(%2), %%mm4			\n\t" /* C4	C4	C4	C4 */\
	"pmaddwd %%mm0, %%mm4			\n\t" /* C4R4+C4R0	C4r4+C4r0 */\
	"movq 24(%2), %%mm5			\n\t" /* -C4	C4	-C4	C4 */\
	"pmaddwd %%mm5, %%mm0			\n\t" /* -C4R4+C4R0	-C4r4+C4r0 */\
	#rounder ", %%mm4			\n\t"\
	"movq %%mm4, %%mm6			\n\t" /* C4R4+C4R0	C4r4+C4r0 */\
	"movq 48(%2), %%mm7			\n\t" /* C3	C1	C3	C1 */\
	#rounder ", %%mm0			\n\t"\
	"pmaddwd %%mm2, %%mm7			\n\t" /* C3R3+C1R1	C3r3+C1r1 */\
	"movq %%mm0, %%mm5			\n\t" /* -C4R4+C4R0	-C4r4+C4r0 */\
	"movq 64(%2), %%mm3			\n\t"\
	"pmaddwd %%mm2, %%mm3			\n\t" /* -C7R3+C3R1	-C7r3+C3r1 */\
	"paddd %%mm4, %%mm7			\n\t" /* A0+B0		a0+b0 */\
	"paddd %%mm4, %%mm4			\n\t" /* 2A0		2a0 */\
	"psubd %%mm7, %%mm4			\n\t" /* A0-B0		a0-b0 */\
	"psrad $" #shift ", %%mm7		\n\t"\
	"psrad $" #shift ", %%mm4		\n\t"\
	"movq %%mm0, %%mm1			\n\t" /* A1		a1 */\
	"paddd %%mm3, %%mm0			\n\t" /* A1+B1		a1+b1 */\
	"psubd %%mm3, %%mm1			\n\t" /* A1-B1		a1-b1 */\
	"psrad $" #shift ", %%mm0		\n\t"\
	"psrad $" #shift ", %%mm1		\n\t"\
	"packssdw %%mm7, %%mm7			\n\t" /* A0+B0	a0+b0 */\
	"movd %%mm7, " #dst "			\n\t"\
	"packssdw %%mm0, %%mm0			\n\t" /* A1+B1	a1+b1 */\
	"movd %%mm0, 16+" #dst "		\n\t"\
	"packssdw %%mm1, %%mm1			\n\t" /* A1-B1	a1-b1 */\
	"movd %%mm1, 96+" #dst "		\n\t"\
	"packssdw %%mm4, %%mm4			\n\t" /* A0-B0	a0-b0 */\
	"movd %%mm4, 112+" #dst "		\n\t"\
	"movq 80(%2), %%mm4			\n\t" /* -C1	C5	-C1 	C5 */\
	"pmaddwd %%mm2, %%mm4			\n\t" /* -C1R3+C5R1	-C1r3+C5r1 */\
	"pmaddwd 96(%2), %%mm2			\n\t" /* -C5R3+C7R1	-C5r3+C7r1 */\
	"movq %%mm5, %%mm1			\n\t" /* A2		a2 */\
	"paddd %%mm4, %%mm1			\n\t" /* A2+B2		a2+b2 */\
	"psubd %%mm4, %%mm5			\n\t" /* a2-B2		a2-b2 */\
	"psrad $" #shift ", %%mm1		\n\t"\
	"psrad $" #shift ", %%mm5		\n\t"\
	"movq %%mm6, %%mm4			\n\t" /* A3		a3 */\
	"paddd %%mm2, %%mm6			\n\t" /* A3+B3		a3+b3 */\
	"psubd %%mm2, %%mm4			\n\t" /* a3-B3		a3-b3 */\
	"psrad $" #shift ", %%mm6		\n\t"\
	"psrad $" #shift ", %%mm4		\n\t"\
	"packssdw %%mm1, %%mm1			\n\t" /* A2+B2	a2+b2 */\
	"packssdw %%mm6, %%mm6			\n\t" /* A3+B3	a3+b3 */\
	"movd %%mm1, 32+" #dst "		\n\t"\
	"packssdw %%mm4, %%mm4			\n\t" /* A3-B3	a3-b3 */\
	"packssdw %%mm5, %%mm5			\n\t" /* A2-B2	a2-b2 */\
	"movd %%mm6, 48+" #dst "		\n\t"\
	"movd %%mm4, 64+" #dst "		\n\t"\
	"movd %%mm5, 80+" #dst "		\n\t"


//IDCT(  src0,   src4,   src1,    src5,    dst, rounder, shift)
IDCT(    (%1), 64(%1), 32(%1),  96(%1),  0(%0),/nop, 20)
IDCT(   8(%1), 72(%1), 40(%1), 104(%1),  4(%0),/nop, 20)
IDCT(  16(%1), 80(%1), 48(%1), 112(%1),  8(%0),/nop, 20)
IDCT(  24(%1), 88(%1), 56(%1), 120(%1), 12(%0),/nop, 20)
	"jmp 9f					\n\t"

	"#.balign 16				\n\t"\
	"5:					\n\t"
#undef IDCT
#define IDCT(src0, src4, src1, src5, dst, rounder, shift) \
	"movq " #src0 ", %%mm0			\n\t" /* R4	R0	r4	r0 */\
	"movq " #src4 ", %%mm1			\n\t" /* R6	R2	r6	r2 */\
	"movq 16(%2), %%mm4			\n\t" /* C4	C4	C4	C4 */\
	"pmaddwd %%mm0, %%mm4			\n\t" /* C4R4+C4R0	C4r4+C4r0 */\
	"movq 24(%2), %%mm5			\n\t" /* -C4	C4	-C4	C4 */\
	"pmaddwd %%mm5, %%mm0			\n\t" /* -C4R4+C4R0	-C4r4+C4r0 */\
	"movq 32(%2), %%mm5			\n\t" /* C6	C2	C6	C2 */\
	"pmaddwd %%mm1, %%mm5			\n\t" /* C6R6+C2R2	C6r6+C2r2 */\
	"movq 40(%2), %%mm6			\n\t" /* -C2	C6	-C2	C6 */\
	"pmaddwd %%mm6, %%mm1			\n\t" /* -C2R6+C6R2	-C2r6+C6r2 */\
	#rounder ", %%mm4			\n\t"\
	"movq %%mm4, %%mm6			\n\t" /* C4R4+C4R0	C4r4+C4r0 */\
	"paddd %%mm5, %%mm4			\n\t" /* A0		a0 */\
	#rounder ", %%mm0			\n\t"\
	"psubd %%mm5, %%mm6			\n\t" /* A3		a3 */\
	"movq %%mm0, %%mm5			\n\t" /* -C4R4+C4R0	-C4r4+C4r0 */\
	"paddd %%mm1, %%mm0			\n\t" /* A1		a1 */\
	"psubd %%mm1, %%mm5			\n\t" /* A2		a2 */\
	"movq 8+" #src0 ", %%mm2		\n\t" /* R4	R0	r4	r0 */\
	"movq 8+" #src4 ", %%mm3		\n\t" /* R6	R2	r6	r2 */\
	"movq 16(%2), %%mm1			\n\t" /* C4	C4	C4	C4 */\
	"pmaddwd %%mm2, %%mm1			\n\t" /* C4R4+C4R0	C4r4+C4r0 */\
	"movq 24(%2), %%mm7			\n\t" /* -C4	C4	-C4	C4 */\
	"pmaddwd %%mm7, %%mm2			\n\t" /* -C4R4+C4R0	-C4r4+C4r0 */\
	"movq 32(%2), %%mm7			\n\t" /* C6	C2	C6	C2 */\
	"pmaddwd %%mm3, %%mm7			\n\t" /* C6R6+C2R2	C6r6+C2r2 */\
	"pmaddwd 40(%2), %%mm3			\n\t" /* -C2R6+C6R2	-C2r6+C6r2 */\
	#rounder ", %%mm1			\n\t"\
	"paddd %%mm1, %%mm7			\n\t" /* A0		a0 */\
	"paddd %%mm1, %%mm1			\n\t" /* 2C0		2c0 */\
	#rounder ", %%mm2			\n\t"\
	"psubd %%mm7, %%mm1			\n\t" /* A3		a3 */\
	"paddd %%mm2, %%mm3			\n\t" /* A1		a1 */\
	"paddd %%mm2, %%mm2			\n\t" /* 2C1		2c1 */\
	"psubd %%mm3, %%mm2			\n\t" /* A2		a2 */\
	"psrad $" #shift ", %%mm4		\n\t"\
	"psrad $" #shift ", %%mm7		\n\t"\
	"psrad $" #shift ", %%mm3		\n\t"\
	"packssdw %%mm7, %%mm4			\n\t" /* A0	a0 */\
	"movq %%mm4, " #dst "			\n\t"\
	"psrad $" #shift ", %%mm0		\n\t"\
	"packssdw %%mm3, %%mm0			\n\t" /* A1	a1 */\
	"movq %%mm0, 16+" #dst "		\n\t"\
	"movq %%mm0, 96+" #dst "		\n\t"\
	"movq %%mm4, 112+" #dst "		\n\t"\
	"psrad $" #shift ", %%mm5		\n\t"\
	"psrad $" #shift ", %%mm6		\n\t"\
	"psrad $" #shift ", %%mm2		\n\t"\
	"packssdw %%mm2, %%mm5			\n\t" /* A2-B2	a2-b2 */\
	"movq %%mm5, 32+" #dst "		\n\t"\
	"psrad $" #shift ", %%mm1		\n\t"\
	"packssdw %%mm1, %%mm6			\n\t" /* A3+B3	a3+b3 */\
	"movq %%mm6, 48+" #dst "		\n\t"\
	"movq %%mm6, 64+" #dst "		\n\t"\
	"movq %%mm5, 80+" #dst "		\n\t"	
	

//IDCT(  src0,   src4,   src1,    src5,    dst, rounder, shift)
IDCT(    0(%1), 64(%1), 32(%1),  96(%1),  0(%0),/nop, 20)
//IDCT(   8(%1), 72(%1), 40(%1), 104(%1),  4(%0),/nop, 20)
IDCT(  16(%1), 80(%1), 48(%1), 112(%1),  8(%0),/nop, 20)
//IDCT(  24(%1), 88(%1), 56(%1), 120(%1), 12(%0),/nop, 20)
	"jmp 9f					\n\t"


	"#.balign 16				\n\t"\
	"1:					\n\t"
#undef IDCT
#define IDCT(src0, src4, src1, src5, dst, rounder, shift) \
	"movq " #src0 ", %%mm0			\n\t" /* R4	R0	r4	r0 */\
	"movq " #src4 ", %%mm1			\n\t" /* R6	R2	r6	r2 */\
	"movq " #src1 ", %%mm2			\n\t" /* R3	R1	r3	r1 */\
	"movq 16(%2), %%mm4			\n\t" /* C4	C4	C4	C4 */\
	"pmaddwd %%mm0, %%mm4			\n\t" /* C4R4+C4R0	C4r4+C4r0 */\
	"movq 24(%2), %%mm5			\n\t" /* -C4	C4	-C4	C4 */\
	"pmaddwd %%mm5, %%mm0			\n\t" /* -C4R4+C4R0	-C4r4+C4r0 */\
	"movq 32(%2), %%mm5			\n\t" /* C6	C2	C6	C2 */\
	"pmaddwd %%mm1, %%mm5			\n\t" /* C6R6+C2R2	C6r6+C2r2 */\
	"movq 40(%2), %%mm6			\n\t" /* -C2	C6	-C2	C6 */\
	"pmaddwd %%mm6, %%mm1			\n\t" /* -C2R6+C6R2	-C2r6+C6r2 */\
	#rounder ", %%mm4			\n\t"\
	"movq %%mm4, %%mm6			\n\t" /* C4R4+C4R0	C4r4+C4r0 */\
	"movq 48(%2), %%mm7			\n\t" /* C3	C1	C3	C1 */\
	#rounder ", %%mm0			\n\t"\
	"pmaddwd %%mm2, %%mm7			\n\t" /* C3R3+C1R1	C3r3+C1r1 */\
	"paddd %%mm5, %%mm4			\n\t" /* A0		a0 */\
	"psubd %%mm5, %%mm6			\n\t" /* A3		a3 */\
	"movq %%mm0, %%mm5			\n\t" /* -C4R4+C4R0	-C4r4+C4r0 */\
	"paddd %%mm1, %%mm0			\n\t" /* A1		a1 */\
	"psubd %%mm1, %%mm5			\n\t" /* A2		a2 */\
	"movq 64(%2), %%mm1			\n\t"\
	"pmaddwd %%mm2, %%mm1			\n\t" /* -C7R3+C3R1	-C7r3+C3r1 */\
	"paddd %%mm4, %%mm7			\n\t" /* A0+B0		a0+b0 */\
	"paddd %%mm4, %%mm4			\n\t" /* 2A0		2a0 */\
	"psubd %%mm7, %%mm4			\n\t" /* A0-B0		a0-b0 */\
	"psrad $" #shift ", %%mm7		\n\t"\
	"psrad $" #shift ", %%mm4		\n\t"\
	"movq %%mm0, %%mm3			\n\t" /* A1		a1 */\
	"paddd %%mm1, %%mm0			\n\t" /* A1+B1		a1+b1 */\
	"psubd %%mm1, %%mm3			\n\t" /* A1-B1		a1-b1 */\
	"psrad $" #shift ", %%mm0		\n\t"\
	"psrad $" #shift ", %%mm3		\n\t"\
	"packssdw %%mm7, %%mm7			\n\t" /* A0+B0	a0+b0 */\
	"movd %%mm7, " #dst "			\n\t"\
	"packssdw %%mm0, %%mm0			\n\t" /* A1+B1	a1+b1 */\
	"movd %%mm0, 16+" #dst "		\n\t"\
	"packssdw %%mm3, %%mm3			\n\t" /* A1-B1	a1-b1 */\
	"movd %%mm3, 96+" #dst "		\n\t"\
	"packssdw %%mm4, %%mm4			\n\t" /* A0-B0	a0-b0 */\
	"movd %%mm4, 112+" #dst "		\n\t"\
	"movq 80(%2), %%mm4			\n\t" /* -C1	C5	-C1 	C5 */\
	"pmaddwd %%mm2, %%mm4			\n\t" /* -C1R3+C5R1	-C1r3+C5r1 */\
	"pmaddwd 96(%2), %%mm2			\n\t" /* -C5R3+C7R1	-C5r3+C7r1 */\
	"movq %%mm5, %%mm3			\n\t" /* A2		a2 */\
	"paddd %%mm4, %%mm3			\n\t" /* A2+B2		a2+b2 */\
	"psubd %%mm4, %%mm5			\n\t" /* a2-B2		a2-b2 */\
	"psrad $" #shift ", %%mm3		\n\t"\
	"psrad $" #shift ", %%mm5		\n\t"\
	"movq %%mm6, %%mm4			\n\t" /* A3		a3 */\
	"paddd %%mm2, %%mm6			\n\t" /* A3+B3		a3+b3 */\
	"psubd %%mm2, %%mm4			\n\t" /* a3-B3		a3-b3 */\
	"psrad $" #shift ", %%mm6		\n\t"\
	"packssdw %%mm3, %%mm3			\n\t" /* A2+B2	a2+b2 */\
	"movd %%mm3, 32+" #dst "		\n\t"\
	"psrad $" #shift ", %%mm4		\n\t"\
	"packssdw %%mm6, %%mm6			\n\t" /* A3+B3	a3+b3 */\
	"movd %%mm6, 48+" #dst "		\n\t"\
	"packssdw %%mm4, %%mm4			\n\t" /* A3-B3	a3-b3 */\
	"packssdw %%mm5, %%mm5			\n\t" /* A2-B2	a2-b2 */\
	"movd %%mm4, 64+" #dst "		\n\t"\
	"movd %%mm5, 80+" #dst "		\n\t"
	

//IDCT(  src0,   src4,   src1,    src5,    dst, rounder, shift)
IDCT(    (%1), 64(%1), 32(%1),  96(%1),  0(%0),/nop, 20)
IDCT(   8(%1), 72(%1), 40(%1), 104(%1),  4(%0),/nop, 20)
IDCT(  16(%1), 80(%1), 48(%1), 112(%1),  8(%0),/nop, 20)
IDCT(  24(%1), 88(%1), 56(%1), 120(%1), 12(%0),/nop, 20)
	"jmp 9f					\n\t"


	"#.balign 16				\n\t"
	"7:					\n\t"
#undef IDCT
#define IDCT(src0, src4, src1, src5, dst, rounder, shift) \
	"movq " #src0 ", %%mm0			\n\t" /* R4	R0	r4	r0 */\
	"movq 16(%2), %%mm4			\n\t" /* C4	C4	C4	C4 */\
	"pmaddwd %%mm0, %%mm4			\n\t" /* C4R4+C4R0	C4r4+C4r0 */\
	"movq 24(%2), %%mm5			\n\t" /* -C4	C4	-C4	C4 */\
	"pmaddwd %%mm5, %%mm0			\n\t" /* -C4R4+C4R0	-C4r4+C4r0 */\
	#rounder ", %%mm4			\n\t"\
	#rounder ", %%mm0			\n\t"\
	"psrad $" #shift ", %%mm4		\n\t"\
	"psrad $" #shift ", %%mm0		\n\t"\
	"movq 8+" #src0 ", %%mm2		\n\t" /* R4	R0	r4	r0 */\
	"movq 16(%2), %%mm1			\n\t" /* C4	C4	C4	C4 */\
	"pmaddwd %%mm2, %%mm1			\n\t" /* C4R4+C4R0	C4r4+C4r0 */\
	"movq 24(%2), %%mm7			\n\t" /* -C4	C4	-C4	C4 */\
	"pmaddwd %%mm7, %%mm2			\n\t" /* -C4R4+C4R0	-C4r4+C4r0 */\
	"movq 32(%2), %%mm7			\n\t" /* C6	C2	C6	C2 */\
	#rounder ", %%mm1			\n\t"\
	#rounder ", %%mm2			\n\t"\
	"psrad $" #shift ", %%mm1		\n\t"\
	"packssdw %%mm1, %%mm4			\n\t" /* A0	a0 */\
	"movq %%mm4, " #dst "			\n\t"\
	"psrad $" #shift ", %%mm2		\n\t"\
	"packssdw %%mm2, %%mm0			\n\t" /* A1	a1 */\
	"movq %%mm0, 16+" #dst "		\n\t"\
	"movq %%mm0, 96+" #dst "		\n\t"\
	"movq %%mm4, 112+" #dst "		\n\t"\
	"movq %%mm0, 32+" #dst "		\n\t"\
	"movq %%mm4, 48+" #dst "		\n\t"\
	"movq %%mm4, 64+" #dst "		\n\t"\
	"movq %%mm0, 80+" #dst "		\n\t"	

//IDCT(  src0,   src4,   src1,    src5,    dst, rounder, shift)
IDCT(   0(%1), 64(%1), 32(%1),  96(%1),  0(%0),/nop, 20)
//IDCT(   8(%1), 72(%1), 40(%1), 104(%1),  4(%0),/nop, 20)
IDCT(  16(%1), 80(%1), 48(%1), 112(%1),  8(%0),/nop, 20)
//IDCT(  24(%1), 88(%1), 56(%1), 120(%1), 12(%0),/nop, 20)


#endif

/*
Input
 00 40 04 44 20 60 24 64
 10 30 14 34 50 70 54 74
 01 41 03 43 21 61 23 63
 11 31 13 33 51 71 53 73
 02 42 06 46 22 62 26 66
 12 32 16 36 52 72 56 76
 05 45 07 47 25 65 27 67
 15 35 17 37 55 75 57 77
  
Temp
 00 04 10 14 20 24 30 34
 40 44 50 54 60 64 70 74
 01 03 11 13 21 23 31 33
 41 43 51 53 61 63 71 73
 02 06 12 16 22 26 32 36
 42 46 52 56 62 66 72 76
 05 07 15 17 25 27 35 37
 45 47 55 57 65 67 75 77
*/

"9: \n\t"
		:: "r" (block), "r" (temp), "r" (coeffs)
		: "%eax"
	);
}

void ff_simple_idct_mmx(int16_t *block)
{
    idct(block);
}

//FIXME merge add/put into the idct

void ff_simple_idct_put_mmx(uint8_t *dest, int line_size, DCTELEM *block)
{
    idct(block);
    put_pixels_clamped_mmx(block, dest, line_size);
}
void ff_simple_idct_add_mmx(uint8_t *dest, int line_size, DCTELEM *block)
{
    idct(block);
    add_pixels_clamped_mmx(block, dest, line_size);
}