| ; |
| ; 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 |
| adr 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| |
| |
| ;----------------- |
| |
| lf_coeff |
| DCD 0x80808080, 0x80808080, 0x80808080, 0x80808080 |
| DCD 0x03030303, 0x03030303, 0x03030303, 0x03030303 |
| DCD 0x04040404, 0x04040404, 0x04040404, 0x04040404 |
| DCD 0x01010101, 0x01010101, 0x01010101, 0x01010101 |
| |
| END |
