Revision f7a5e779 libavcodec/x86/ac3dsp.asm
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AC3_MAX_MSB_ABS_INT16 sse2, min_max |
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%define ABS2 ABS2_SSSE3 |
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AC3_MAX_MSB_ABS_INT16 ssse3, or_abs |
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;----------------------------------------------------------------------------- |
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; macro used for ff_ac3_lshift_int16() and ff_ac3_shift_int32() |
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;----------------------------------------------------------------------------- |
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%macro AC3_SHIFT_4MM 3 ; src/dst, shift instruction, shift amount |
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mova m1, [%1 ] |
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mova m2, [%1+mmsize ] |
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mova m3, [%1+mmsize*2] |
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mova m4, [%1+mmsize*3] |
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%2 m1, %3 |
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%2 m2, %3 |
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%2 m3, %3 |
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%2 m4, %3 |
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mova [%1 ], m1 |
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mova [%1+mmsize ], m2 |
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mova [%1+mmsize*2], m3 |
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mova [%1+mmsize*3], m4 |
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add %1, mmsize*4 |
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%endmacro |
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;----------------------------------------------------------------------------- |
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; void ff_ac3_lshift_int16(int16_t *src, int len, unsigned int shift) |
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;----------------------------------------------------------------------------- |
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%macro AC3_LSHIFT_INT16 1 |
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cglobal ac3_lshift_int16_%1, 3,3,5, src, len, shift |
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test shiftd, shiftd |
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jz .end |
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movd m0, shiftd |
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ALIGN 8 |
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.loop: |
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AC3_SHIFT_4MM srcq, psllw, m0 |
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sub lend, mmsize*2 |
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ja .loop |
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.end: |
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REP_RET |
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%endmacro |
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INIT_MMX |
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AC3_LSHIFT_INT16 mmx |
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INIT_XMM |
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AC3_LSHIFT_INT16 sse2 |
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;----------------------------------------------------------------------------- |
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; void ff_ac3_shift_int32(int32_t *src, int len, int shift) |
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;----------------------------------------------------------------------------- |
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%macro AC3_SHIFT_INT32 1 |
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cglobal ac3_shift_int32_%1, 3,3,5, src, len, shift |
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test shiftd, shiftd |
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je .end |
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js .shift_right |
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movd m0, shiftd |
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.loop_left: |
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AC3_SHIFT_4MM srcq, pslld, m0 |
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sub lend, mmsize |
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ja .loop_left |
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jmp .end |
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.shift_right: |
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neg shiftd |
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movd m0, shiftd |
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.loop_right: |
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AC3_SHIFT_4MM srcq, psrad, m0 |
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sub lend, mmsize |
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ja .loop_right |
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.end: |
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REP_RET |
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%endmacro |
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INIT_MMX |
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AC3_SHIFT_INT32 mmx |
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INIT_XMM |
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AC3_SHIFT_INT32 sse2 |
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