diff options
Diffstat (limited to 'libavcodec/ppc/fft_altivec_s.S')
| -rw-r--r-- | libavcodec/ppc/fft_altivec_s.S | 117 |
1 files changed, 94 insertions, 23 deletions
diff --git a/libavcodec/ppc/fft_altivec_s.S b/libavcodec/ppc/fft_altivec_s.S index e6af50f90f..d17d033bab 100644 --- a/libavcodec/ppc/fft_altivec_s.S +++ b/libavcodec/ppc/fft_altivec_s.S @@ -49,24 +49,6 @@ .endif .endm -#if ARCH_PPC64 -#define PTR .quad -.macro LOAD_PTR ra, rbase, offset - ld \ra,(\offset)*8(\rbase) -.endm -.macro STORE_PTR ra, rbase, offset - std \ra,(\offset)*8(\rbase) -.endm -#else -#define PTR .int -.macro LOAD_PTR ra, rbase, offset - lwz \ra,(\offset)*4(\rbase) -.endm -.macro STORE_PTR ra, rbase, offset - stw \ra,(\offset)*4(\rbase) -.endm -#endif - .macro FFT4 a0, a1, a2, a3 // in:0-1 out:2-3 vperm \a2,\a0,\a1,v20 // vcprm(0,1,s2,s1) // {r0,i0,r3,i2} vperm \a3,\a0,\a1,v21 // vcprm(2,3,s0,s3) // {r1,i1,r2,i3} @@ -314,18 +296,105 @@ fft_pass\suffix\()_altivec: blr .endm +#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */ + +#define WORD_0 0x00,0x01,0x02,0x03 +#define WORD_1 0x04,0x05,0x06,0x07 +#define WORD_2 0x08,0x09,0x0a,0x0b +#define WORD_3 0x0c,0x0d,0x0e,0x0f +#define WORD_s0 0x10,0x11,0x12,0x13 +#define WORD_s1 0x14,0x15,0x16,0x17 +#define WORD_s2 0x18,0x19,0x1a,0x1b +#define WORD_s3 0x1c,0x1d,0x1e,0x1f + +#define vcprm(a, b, c, d) .byte WORD_##a, WORD_##b, WORD_##c, WORD_##d + + .rodata + .align 4 +fft_data: + .float 0, 0, 0, 0 + .float 1, 0.92387953, M_SQRT1_2, 0.38268343 + .float 0, 0.38268343, M_SQRT1_2, 0.92387953 + .float -M_SQRT1_2, M_SQRT1_2, M_SQRT1_2,-M_SQRT1_2 + .float M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, M_SQRT1_2 + vcprm(s0,3,2,1) + vcprm(0,1,s2,s1) + vcprm(2,3,s0,s3) + vcprm(2,s3,3,s2) + vcprm(0,1,s0,s1) + vcprm(2,3,s2,s3) + vcprm(2,3,0,1) + vcprm(1,2,s3,s0) + vcprm(0,3,s2,s1) + vcprm(0,2,s1,s3) + vcprm(1,3,s0,s2) + +.macro lvm b, r, regs:vararg + lvx \r, 0, \b + addi \b, \b, 16 + .ifnb \regs + lvm \b, \regs + .endif +.endm + +.macro stvm b, r, regs:vararg + stvx \r, 0, \b + addi \b, \b, 16 + .ifnb \regs + stvm \b, \regs + .endif +.endm + +.macro fft_calc interleave +extfunc ff_fft_calc\interleave\()_altivec + mflr r0 + stp r0, 2*PS(r1) + stpu r1, -(160+16*PS)(r1) + addi r6, r1, 16*PS + stvm r6, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29 + mfvrsave r0 + stw r0, 15*PS(r1) + li r6, 0xfffffffc + mtvrsave r6 + + movrel r6, fft_data + lvm r6, v14, v15, v16, v17, v18, v19, v20, v21 + lvm r6, v22, v23, v24, v25, v26, v27, v28, v29 + + li r9, 16 + movrel r12, X(ff_cos_tabs) + + movrel r6, fft_dispatch_tab\interleave\()_altivec + lwz r3, 0(r3) + subi r3, r3, 2 + slwi r3, r3, 2+ARCH_PPC64 + lpx r3, r3, r6 + mtctr r3 + mr r3, r4 + bctrl + + addi r6, r1, 16*PS + lvm r6, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29 + lwz r6, 15*PS(r1) + mtvrsave r6 + lp r1, 0(r1) + lp r0, 2*PS(r1) + mtlr r0 + blr +.endm + .macro DECL_FFT suffix, bits, n, n2, n4 fft\n\suffix\()_altivec: mflr r0 - STORE_PTR r0,r1,\bits-5 + stp r0,PS*(\bits-3)(r1) bl fft\n2\()_altivec addi2 r3,\n*4 bl fft\n4\()_altivec addi2 r3,\n*2 bl fft\n4\()_altivec addi2 r3,\n*-6 - LOAD_PTR r0,r1,\bits-5 - LOAD_PTR r4,r12,\bits + lp r0,PS*(\bits-3)(r1) + lp r4,\bits*PS(r12) mtlr r0 li r5,\n/16 b fft_pass\suffix\()_altivec @@ -350,9 +419,11 @@ fft\n\suffix\()_altivec: DECL_FFT \suffix,15,32768,16384, 8192 DECL_FFT \suffix,16,65536,32768,16384 + fft_calc \suffix + .rodata - .global EXTERN_ASM\()ff_fft_dispatch\suffix\()_altivec -EXTERN_ASM\()ff_fft_dispatch\suffix\()_altivec: + .align 3 +fft_dispatch_tab\suffix\()_altivec: PTR fft4\suffix\()_altivec PTR fft8\suffix\()_altivec PTR fft16\suffix\()_altivec |