diff options
Diffstat (limited to 'third_party/aom/aom_dsp/arm/variance_halfpixvar16x16_h_media.asm')
| -rw-r--r-- | third_party/aom/aom_dsp/arm/variance_halfpixvar16x16_h_media.asm | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/arm/variance_halfpixvar16x16_h_media.asm b/third_party/aom/aom_dsp/arm/variance_halfpixvar16x16_h_media.asm new file mode 100644 index 000000000..1e5c9178e --- /dev/null +++ b/third_party/aom/aom_dsp/arm/variance_halfpixvar16x16_h_media.asm @@ -0,0 +1,185 @@ +; +; Copyright (c) 2016, Alliance for Open Media. All rights reserved +; +; This source code is subject to the terms of the BSD 2 Clause License and +; the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License +; was not distributed with this source code in the LICENSE file, you can +; obtain it at www.aomedia.org/license/software. If the Alliance for Open +; Media Patent License 1.0 was not distributed with this source code in the +; PATENTS file, you can obtain it at www.aomedia.org/license/patent. +; + +; + + + EXPORT |aom_variance_halfpixvar16x16_h_media| + + ARM + REQUIRE8 + PRESERVE8 + + AREA ||.text||, CODE, READONLY, ALIGN=2 + +; r0 unsigned char *src_ptr +; r1 int source_stride +; r2 unsigned char *ref_ptr +; r3 int recon_stride +; stack unsigned int *sse +|aom_variance_halfpixvar16x16_h_media| PROC + + stmfd sp!, {r4-r12, lr} + + pld [r0, r1, lsl #0] + pld [r2, r3, lsl #0] + + mov r8, #0 ; initialize sum = 0 + ldr r10, c80808080 + mov r11, #0 ; initialize sse = 0 + mov r12, #16 ; set loop counter to 16 (=block height) + mov lr, #0 ; constant zero +loop + ; 1st 4 pixels + ldr r4, [r0, #0] ; load 4 src pixels + ldr r6, [r0, #1] ; load 4 src pixels with 1 byte offset + ldr r5, [r2, #0] ; load 4 ref pixels + + ; bilinear interpolation + mvn r6, r6 + uhsub8 r4, r4, r6 + eor r4, r4, r10 + + usub8 r6, r4, r5 ; calculate difference + pld [r0, r1, lsl #1] + sel r7, r6, lr ; select bytes with positive difference + usub8 r6, r5, r4 ; calculate difference with reversed operands + pld [r2, r3, lsl #1] + sel r6, r6, lr ; select bytes with negative difference + + ; calculate partial sums + usad8 r4, r7, lr ; calculate sum of positive differences + usad8 r5, r6, lr ; calculate sum of negative differences + orr r6, r6, r7 ; differences of all 4 pixels + ; calculate total sum + adds r8, r8, r4 ; add positive differences to sum + subs r8, r8, r5 ; subtract negative differences from sum + + ; calculate sse + uxtb16 r5, r6 ; byte (two pixels) to halfwords + uxtb16 r7, r6, ror #8 ; another two pixels to halfwords + smlad r11, r5, r5, r11 ; dual signed multiply, add and accumulate (1) + + ; 2nd 4 pixels + ldr r4, [r0, #4] ; load 4 src pixels + ldr r6, [r0, #5] ; load 4 src pixels with 1 byte offset + ldr r5, [r2, #4] ; load 4 ref pixels + + ; bilinear interpolation + mvn r6, r6 + uhsub8 r4, r4, r6 + eor r4, r4, r10 + + smlad r11, r7, r7, r11 ; dual signed multiply, add and accumulate (2) + + usub8 r6, r4, r5 ; calculate difference + sel r7, r6, lr ; select bytes with positive difference + usub8 r6, r5, r4 ; calculate difference with reversed operands + sel r6, r6, lr ; select bytes with negative difference + + ; calculate partial sums + usad8 r4, r7, lr ; calculate sum of positive differences + usad8 r5, r6, lr ; calculate sum of negative differences + orr r6, r6, r7 ; differences of all 4 pixels + + ; calculate total sum + add r8, r8, r4 ; add positive differences to sum + sub r8, r8, r5 ; subtract negative differences from sum + + ; calculate sse + uxtb16 r5, r6 ; byte (two pixels) to halfwords + uxtb16 r7, r6, ror #8 ; another two pixels to halfwords + smlad r11, r5, r5, r11 ; dual signed multiply, add and accumulate (1) + + ; 3rd 4 pixels + ldr r4, [r0, #8] ; load 4 src pixels + ldr r6, [r0, #9] ; load 4 src pixels with 1 byte offset + ldr r5, [r2, #8] ; load 4 ref pixels + + ; bilinear interpolation + mvn r6, r6 + uhsub8 r4, r4, r6 + eor r4, r4, r10 + + smlad r11, r7, r7, r11 ; dual signed multiply, add and accumulate (2) + + usub8 r6, r4, r5 ; calculate difference + sel r7, r6, lr ; select bytes with positive difference + usub8 r6, r5, r4 ; calculate difference with reversed operands + sel r6, r6, lr ; select bytes with negative difference + + ; calculate partial sums + usad8 r4, r7, lr ; calculate sum of positive differences + usad8 r5, r6, lr ; calculate sum of negative differences + orr r6, r6, r7 ; differences of all 4 pixels + + ; calculate total sum + add r8, r8, r4 ; add positive differences to sum + sub r8, r8, r5 ; subtract negative differences from sum + + ; calculate sse + uxtb16 r5, r6 ; byte (two pixels) to halfwords + uxtb16 r7, r6, ror #8 ; another two pixels to halfwords + smlad r11, r5, r5, r11 ; dual signed multiply, add and accumulate (1) + + ; 4th 4 pixels + ldr r4, [r0, #12] ; load 4 src pixels + ldr r6, [r0, #13] ; load 4 src pixels with 1 byte offset + ldr r5, [r2, #12] ; load 4 ref pixels + + ; bilinear interpolation + mvn r6, r6 + uhsub8 r4, r4, r6 + eor r4, r4, r10 + + smlad r11, r7, r7, r11 ; dual signed multiply, add and accumulate (2) + + usub8 r6, r4, r5 ; calculate difference + add r0, r0, r1 ; set src_ptr to next row + sel r7, r6, lr ; select bytes with positive difference + usub8 r6, r5, r4 ; calculate difference with reversed operands + add r2, r2, r3 ; set dst_ptr to next row + sel r6, r6, lr ; select bytes with negative difference + + ; calculate partial sums + usad8 r4, r7, lr ; calculate sum of positive differences + usad8 r5, r6, lr ; calculate sum of negative differences + orr r6, r6, r7 ; differences of all 4 pixels + + ; calculate total sum + add r8, r8, r4 ; add positive differences to sum + sub r8, r8, r5 ; subtract negative differences from sum + + ; calculate sse + uxtb16 r5, r6 ; byte (two pixels) to halfwords + uxtb16 r7, r6, ror #8 ; another two pixels to halfwords + smlad r11, r5, r5, r11 ; dual signed multiply, add and accumulate (1) + smlad r11, r7, r7, r11 ; dual signed multiply, add and accumulate (2) + + subs r12, r12, #1 + + bne loop + + ; return stuff + ldr r6, [sp, #40] ; get address of sse + mul r0, r8, r8 ; sum * sum + str r11, [r6] ; store sse + sub r0, r11, r0, lsr #8 ; return (sse - ((sum * sum) >> 8)) + + ldmfd sp!, {r4-r12, pc} + + ENDP + +c80808080 + DCD 0x80808080 + + END + |