ref: e0846c9c8c374a07911ced982ce68949886d0f21
dir: /vp8/common/arm/neon/loopfilter_neon.asm/
; ; Copyright (c) 2010 The WebM project authors. All Rights Reserved. ; ; Use of this source code is governed by a BSD-style license ; that can be found in the LICENSE file in the root of the source ; tree. An additional intellectual property rights grant can be found ; in the file PATENTS. All contributing project authors may ; be found in the AUTHORS file in the root of the source tree. ; EXPORT |vp8_loop_filter_horizontal_edge_y_neon| EXPORT |vp8_loop_filter_horizontal_edge_uv_neon| EXPORT |vp8_loop_filter_vertical_edge_y_neon| EXPORT |vp8_loop_filter_vertical_edge_uv_neon| ARM REQUIRE8 PRESERVE8 AREA ||.text||, CODE, READONLY, ALIGN=2 ; flimit, limit, and thresh should be positive numbers. ; All 16 elements in these variables are equal. ; void vp8_loop_filter_horizontal_edge_y_neon(unsigned char *src, int pitch, ; const signed char *flimit, ; const signed char *limit, ; const signed char *thresh, ; int count) ; r0 unsigned char *src ; r1 int pitch ; r2 const signed char *flimit ; r3 const signed char *limit ; sp const signed char *thresh, ; sp+4 int count (unused) |vp8_loop_filter_horizontal_edge_y_neon| PROC stmdb sp!, {lr} vld1.s8 {d0[], d1[]}, [r2] ; flimit vld1.s8 {d2[], d3[]}, [r3] ; limit sub r2, r0, r1, lsl #2 ; move src pointer down by 4 lines ldr r12, [sp, #4] ; load thresh pointer vld1.u8 {q3}, [r2], r1 ; p3 vld1.u8 {q4}, [r2], r1 ; p2 vld1.u8 {q5}, [r2], r1 ; p1 vld1.u8 {q6}, [r2], r1 ; p0 vld1.u8 {q7}, [r2], r1 ; q0 vld1.u8 {q8}, [r2], r1 ; q1 vld1.u8 {q9}, [r2], r1 ; q2 vld1.u8 {q10}, [r2] ; q3 vld1.s8 {d4[], d5[]}, [r12] ; thresh sub r0, r0, r1, lsl #1 bl vp8_loop_filter_neon vst1.u8 {q5}, [r0], r1 ; store op1 vst1.u8 {q6}, [r0], r1 ; store op0 vst1.u8 {q7}, [r0], r1 ; store oq0 vst1.u8 {q8}, [r0], r1 ; store oq1 ldmia sp!, {pc} ENDP ; |vp8_loop_filter_horizontal_edge_y_neon| ; void vp8_loop_filter_horizontal_edge_uv_neon(unsigned char *u, int pitch ; const signed char *flimit, ; const signed char *limit, ; const signed char *thresh, ; unsigned char *v) ; r0 unsigned char *u, ; r1 int pitch, ; r2 const signed char *flimit, ; r3 const signed char *limit, ; sp const signed char *thresh, ; sp+4 unsigned char *v |vp8_loop_filter_horizontal_edge_uv_neon| PROC stmdb sp!, {lr} vld1.s8 {d0[], d1[]}, [r2] ; flimit vld1.s8 {d2[], d3[]}, [r3] ; limit ldr r2, [sp, #8] ; load v ptr sub r3, r0, r1, lsl #2 ; move u pointer down by 4 lines vld1.u8 {d6}, [r3], r1 ; p3 vld1.u8 {d8}, [r3], r1 ; p2 vld1.u8 {d10}, [r3], r1 ; p1 vld1.u8 {d12}, [r3], r1 ; p0 vld1.u8 {d14}, [r3], r1 ; q0 vld1.u8 {d16}, [r3], r1 ; q1 vld1.u8 {d18}, [r3], r1 ; q2 vld1.u8 {d20}, [r3] ; q3 ldr r3, [sp, #4] ; load thresh pointer sub r12, r2, r1, lsl #2 ; move v pointer down by 4 lines vld1.u8 {d7}, [r12], r1 ; p3 vld1.u8 {d9}, [r12], r1 ; p2 vld1.u8 {d11}, [r12], r1 ; p1 vld1.u8 {d13}, [r12], r1 ; p0 vld1.u8 {d15}, [r12], r1 ; q0 vld1.u8 {d17}, [r12], r1 ; q1 vld1.u8 {d19}, [r12], r1 ; q2 vld1.u8 {d21}, [r12] ; q3 vld1.s8 {d4[], d5[]}, [r3] ; thresh bl vp8_loop_filter_neon sub r0, r0, r1, lsl #1 sub r2, r2, r1, lsl #1 vst1.u8 {d10}, [r0], r1 ; store u op1 vst1.u8 {d11}, [r2], r1 ; store v op1 vst1.u8 {d12}, [r0], r1 ; store u op0 vst1.u8 {d13}, [r2], r1 ; store v op0 vst1.u8 {d14}, [r0], r1 ; store u oq0 vst1.u8 {d15}, [r2], r1 ; store v oq0 vst1.u8 {d16}, [r0] ; store u oq1 vst1.u8 {d17}, [r2] ; store v oq1 ldmia sp!, {pc} ENDP ; |vp8_loop_filter_horizontal_edge_uv_neon| ; void vp8_loop_filter_vertical_edge_y_neon(unsigned char *src, int pitch, ; const signed char *flimit, ; const signed char *limit, ; const signed char *thresh, ; int count) ; r0 unsigned char *src, ; r1 int pitch, ; r2 const signed char *flimit, ; r3 const signed char *limit, ; sp const signed char *thresh, ; sp+4 int count (unused) |vp8_loop_filter_vertical_edge_y_neon| PROC stmdb sp!, {lr} vld1.s8 {d0[], d1[]}, [r2] ; flimit vld1.s8 {d2[], d3[]}, [r3] ; limit sub r2, r0, #4 ; src ptr down by 4 columns sub r0, r0, #2 ; dst ptr ldr r12, [sp, #4] ; load thresh pointer vld1.u8 {d6}, [r2], r1 ; load first 8-line src data vld1.u8 {d8}, [r2], r1 vld1.u8 {d10}, [r2], r1 vld1.u8 {d12}, [r2], r1 vld1.u8 {d14}, [r2], r1 vld1.u8 {d16}, [r2], r1 vld1.u8 {d18}, [r2], r1 vld1.u8 {d20}, [r2], r1 vld1.s8 {d4[], d5[]}, [r12] ; thresh vld1.u8 {d7}, [r2], r1 ; load second 8-line src data vld1.u8 {d9}, [r2], r1 vld1.u8 {d11}, [r2], r1 vld1.u8 {d13}, [r2], r1 vld1.u8 {d15}, [r2], r1 vld1.u8 {d17}, [r2], r1 vld1.u8 {d19}, [r2], r1 vld1.u8 {d21}, [r2] ;transpose to 8x16 matrix vtrn.32 q3, q7 vtrn.32 q4, q8 vtrn.32 q5, q9 vtrn.32 q6, q10 vtrn.16 q3, q5 vtrn.16 q4, q6 vtrn.16 q7, q9 vtrn.16 q8, q10 vtrn.8 q3, q4 vtrn.8 q5, q6 vtrn.8 q7, q8 vtrn.8 q9, q10 bl vp8_loop_filter_neon vswp d12, d11 vswp d16, d13 vswp d14, d12 vswp d16, d15 ;store op1, op0, oq0, oq1 vst4.8 {d10[0], d11[0], d12[0], d13[0]}, [r0], r1 vst4.8 {d10[1], d11[1], d12[1], d13[1]}, [r0], r1 vst4.8 {d10[2], d11[2], d12[2], d13[2]}, [r0], r1 vst4.8 {d10[3], d11[3], d12[3], d13[3]}, [r0], r1 vst4.8 {d10[4], d11[4], d12[4], d13[4]}, [r0], r1 vst4.8 {d10[5], d11[5], d12[5], d13[5]}, [r0], r1 vst4.8 {d10[6], d11[6], d12[6], d13[6]}, [r0], r1 vst4.8 {d10[7], d11[7], d12[7], d13[7]}, [r0], r1 vst4.8 {d14[0], d15[0], d16[0], d17[0]}, [r0], r1 vst4.8 {d14[1], d15[1], d16[1], d17[1]}, [r0], r1 vst4.8 {d14[2], d15[2], d16[2], d17[2]}, [r0], r1 vst4.8 {d14[3], d15[3], d16[3], d17[3]}, [r0], r1 vst4.8 {d14[4], d15[4], d16[4], d17[4]}, [r0], r1 vst4.8 {d14[5], d15[5], d16[5], d17[5]}, [r0], r1 vst4.8 {d14[6], d15[6], d16[6], d17[6]}, [r0], r1 vst4.8 {d14[7], d15[7], d16[7], d17[7]}, [r0] ldmia sp!, {pc} ENDP ; |vp8_loop_filter_vertical_edge_y_neon| ; void vp8_loop_filter_vertical_edge_uv_neon(unsigned char *u, int pitch ; const signed char *flimit, ; const signed char *limit, ; const signed char *thresh, ; unsigned char *v) ; r0 unsigned char *u, ; r1 int pitch, ; r2 const signed char *flimit, ; r3 const signed char *limit, ; sp const signed char *thresh, ; sp+4 unsigned char *v |vp8_loop_filter_vertical_edge_uv_neon| PROC stmdb sp!, {lr} sub r12, r0, #4 ; move u pointer down by 4 columns vld1.s8 {d0[], d1[]}, [r2] ; flimit vld1.s8 {d2[], d3[]}, [r3] ; limit ldr r2, [sp, #8] ; load v ptr vld1.u8 {d6}, [r12], r1 ;load u data vld1.u8 {d8}, [r12], r1 vld1.u8 {d10}, [r12], r1 vld1.u8 {d12}, [r12], r1 vld1.u8 {d14}, [r12], r1 vld1.u8 {d16}, [r12], r1 vld1.u8 {d18}, [r12], r1 vld1.u8 {d20}, [r12] sub r3, r2, #4 ; move v pointer down by 4 columns vld1.u8 {d7}, [r3], r1 ;load v data vld1.u8 {d9}, [r3], r1 vld1.u8 {d11}, [r3], r1 vld1.u8 {d13}, [r3], r1 vld1.u8 {d15}, [r3], r1 vld1.u8 {d17}, [r3], r1 vld1.u8 {d19}, [r3], r1 vld1.u8 {d21}, [r3] ldr r12, [sp, #4] ; load thresh pointer ;transpose to 8x16 matrix vtrn.32 q3, q7 vtrn.32 q4, q8 vtrn.32 q5, q9 vtrn.32 q6, q10 vtrn.16 q3, q5 vtrn.16 q4, q6 vtrn.16 q7, q9 vtrn.16 q8, q10 vtrn.8 q3, q4 vtrn.8 q5, q6 vtrn.8 q7, q8 vtrn.8 q9, q10 vld1.s8 {d4[], d5[]}, [r12] ; thresh bl vp8_loop_filter_neon sub r0, r0, #2 sub r2, r2, #2 vswp d12, d11 vswp d16, d13 vswp d14, d12 vswp d16, d15 ;store op1, op0, oq0, oq1 vst4.8 {d10[0], d11[0], d12[0], d13[0]}, [r0], r1 vst4.8 {d14[0], d15[0], d16[0], d17[0]}, [r2], r1 vst4.8 {d10[1], d11[1], d12[1], d13[1]}, [r0], r1 vst4.8 {d14[1], d15[1], d16[1], d17[1]}, [r2], r1 vst4.8 {d10[2], d11[2], d12[2], d13[2]}, [r0], r1 vst4.8 {d14[2], d15[2], d16[2], d17[2]}, [r2], r1 vst4.8 {d10[3], d11[3], d12[3], d13[3]}, [r0], r1 vst4.8 {d14[3], d15[3], d16[3], d17[3]}, [r2], r1 vst4.8 {d10[4], d11[4], d12[4], d13[4]}, [r0], r1 vst4.8 {d14[4], d15[4], d16[4], d17[4]}, [r2], r1 vst4.8 {d10[5], d11[5], d12[5], d13[5]}, [r0], r1 vst4.8 {d14[5], d15[5], d16[5], d17[5]}, [r2], r1 vst4.8 {d10[6], d11[6], d12[6], d13[6]}, [r0], r1 vst4.8 {d14[6], d15[6], d16[6], d17[6]}, [r2], r1 vst4.8 {d10[7], d11[7], d12[7], d13[7]}, [r0] vst4.8 {d14[7], d15[7], d16[7], d17[7]}, [r2] ldmia sp!, {pc} ENDP ; |vp8_loop_filter_vertical_edge_uv_neon| ; void vp8_loop_filter_neon(); ; This is a helper function for the loopfilters. The invidual functions do the ; necessary load, transpose (if necessary) and store. ; r0-r3 PRESERVE ; q0 flimit ; q1 limit ; q2 thresh ; q3 p3 ; q4 p2 ; q5 p1 ; q6 p0 ; q7 q0 ; q8 q1 ; q9 q2 ; q10 q3 |vp8_loop_filter_neon| PROC ldr r12, _lf_coeff_ ; vp8_filter_mask vabd.u8 q11, q3, q4 ; abs(p3 - p2) vabd.u8 q12, q4, q5 ; abs(p2 - p1) vabd.u8 q13, q5, q6 ; abs(p1 - p0) vabd.u8 q14, q8, q7 ; abs(q1 - q0) vabd.u8 q3, q9, q8 ; abs(q2 - q1) vabd.u8 q4, q10, q9 ; abs(q3 - q2) vabd.u8 q9, q6, q7 ; abs(p0 - q0) vmax.u8 q11, q11, q12 vmax.u8 q12, q13, q14 vmax.u8 q3, q3, q4 vmax.u8 q15, q11, q12 ; vp8_hevmask vcgt.u8 q13, q13, q2 ; (abs(p1 - p0) > thresh)*-1 vcgt.u8 q14, q14, q2 ; (abs(q1 - q0) > thresh)*-1 vmax.u8 q15, q15, q3 vadd.u8 q0, q0, q0 ; flimit * 2 vadd.u8 q0, q0, q1 ; flimit * 2 + limit vcge.u8 q15, q1, q15 vabd.u8 q2, q5, q8 ; a = abs(p1 - q1) vqadd.u8 q9, q9, q9 ; b = abs(p0 - q0) * 2 vshr.u8 q2, q2, #1 ; a = a / 2 vqadd.u8 q9, q9, q2 ; a = b + a vcge.u8 q9, q0, q9 ; (a > flimit * 2 + limit) * -1 vld1.u8 {q0}, [r12]! ; vp8_filter() function ; convert to signed veor q7, q7, q0 ; qs0 veor q6, q6, q0 ; ps0 veor q5, q5, q0 ; ps1 veor q8, q8, q0 ; qs1 vld1.u8 {q10}, [r12]! vsubl.s8 q2, d14, d12 ; ( qs0 - ps0) vsubl.s8 q11, d15, d13 vmovl.u8 q4, d20 vqsub.s8 q1, q5, q8 ; vp8_filter = clamp(ps1-qs1) vorr q14, q13, q14 ; vp8_hevmask vmul.i16 q2, q2, q4 ; 3 * ( qs0 - ps0) vmul.i16 q11, q11, q4 vand q1, q1, q14 ; vp8_filter &= hev vand q15, q15, q9 ; vp8_filter_mask vaddw.s8 q2, q2, d2 vaddw.s8 q11, q11, d3 vld1.u8 {q9}, [r12]! ; vp8_filter = clamp(vp8_filter + 3 * ( qs0 - ps0)) vqmovn.s16 d2, q2 vqmovn.s16 d3, q11 vand q1, q1, q15 ; vp8_filter &= mask vqadd.s8 q2, q1, q10 ; Filter2 = clamp(vp8_filter+3) vqadd.s8 q1, q1, q9 ; Filter1 = clamp(vp8_filter+4) vshr.s8 q2, q2, #3 ; Filter2 >>= 3 vshr.s8 q1, q1, #3 ; Filter1 >>= 3 vqadd.s8 q11, q6, q2 ; u = clamp(ps0 + Filter2) vqsub.s8 q10, q7, q1 ; u = clamp(qs0 - Filter1) ; outer tap adjustments: ++vp8_filter >> 1 vrshr.s8 q1, q1, #1 vbic q1, q1, q14 ; vp8_filter &= ~hev vqadd.s8 q13, q5, q1 ; u = clamp(ps1 + vp8_filter) vqsub.s8 q12, q8, q1 ; u = clamp(qs1 - vp8_filter) veor q5, q13, q0 ; *op1 = u^0x80 veor q6, q11, q0 ; *op0 = u^0x80 veor q7, q10, q0 ; *oq0 = u^0x80 veor q8, q12, q0 ; *oq1 = u^0x80 bx lr ENDP ; |vp8_loop_filter_horizontal_edge_y_neon| AREA loopfilter_dat, DATA, READONLY _lf_coeff_ DCD lf_coeff lf_coeff DCD 0x80808080, 0x80808080, 0x80808080, 0x80808080 DCD 0x03030303, 0x03030303, 0x03030303, 0x03030303 DCD 0x04040404, 0x04040404, 0x04040404, 0x04040404 DCD 0x01010101, 0x01010101, 0x01010101, 0x01010101 END