Half pixel variance further optimized for ARMv6
Half pixel interpolations optimized in variance calculations. Separate function calls to vp8_filter_block2d_bil_x_pass_armv6 are avoided.On average, performance improvement is 6-7% for VGA@30fps sequences. Change-Id: Idb5f118a9d51548e824719d2cfe5be0fa6996628
This commit is contained in:
Tero Rintaluoma
Родитель
beaafefcf1
Коммит
f5e433464b
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@ -25,14 +25,14 @@
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|vp8_variance16x16_armv6| PROC
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stmfd sp!, {r4-r12, lr}
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mov r12, #16 ; set loop counter to 16 (=block height)
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mov r8, #0 ; initialize sum = 0
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mov r11, #0 ; initialize sse = 0
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mov r12, #16 ; set loop counter to 16 (=block height)
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loop
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; 1st 4 pixels
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ldr r4, [r0, #0x0] ; load 4 src pixels
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ldr r5, [r2, #0x0] ; load 4 ref pixels
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ldr r4, [r0, #0] ; load 4 src pixels
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ldr r5, [r2, #0] ; load 4 ref pixels
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mov lr, #0 ; constant zero
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@ -55,8 +55,8 @@ loop
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smlad r11, r5, r5, r11 ; dual signed multiply, add and accumulate (1)
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; 2nd 4 pixels
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ldr r4, [r0, #0x4] ; load 4 src pixels
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ldr r5, [r2, #0x4] ; load 4 ref pixels
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ldr r4, [r0, #4] ; load 4 src pixels
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ldr r5, [r2, #4] ; load 4 ref pixels
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smlad r11, r10, r10, r11 ; dual signed multiply, add and accumulate (2)
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usub8 r6, r4, r5 ; calculate difference
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@ -79,8 +79,8 @@ loop
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smlad r11, r5, r5, r11 ; dual signed multiply, add and accumulate (1)
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; 3rd 4 pixels
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ldr r4, [r0, #0x8] ; load 4 src pixels
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ldr r5, [r2, #0x8] ; load 4 ref pixels
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ldr r4, [r0, #8] ; load 4 src pixels
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ldr r5, [r2, #8] ; load 4 ref pixels
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smlad r11, r10, r10, r11 ; dual signed multiply, add and accumulate (2)
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usub8 r6, r4, r5 ; calculate difference
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@ -103,8 +103,8 @@ loop
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smlad r11, r5, r5, r11 ; dual signed multiply, add and accumulate (1)
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; 4th 4 pixels
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ldr r4, [r0, #0xc] ; load 4 src pixels
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ldr r5, [r2, #0xc] ; load 4 ref pixels
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ldr r4, [r0, #12] ; load 4 src pixels
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ldr r5, [r2, #12] ; load 4 ref pixels
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smlad r11, r10, r10, r11 ; dual signed multiply, add and accumulate (2)
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usub8 r6, r4, r5 ; calculate difference
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@ -135,13 +135,14 @@ loop
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bne loop
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; return stuff
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ldr r6, [sp, #0x28] ; get address of sse
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ldr r6, [sp, #40] ; get address of sse
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mul r0, r8, r8 ; sum * sum
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str r11, [r6] ; store sse
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sub r0, r11, r0, ASR #8 ; return (sse - ((sum * sum) >> 8))
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sub r0, r11, r0, asr #8 ; return (sse - ((sum * sum) >> 8))
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ldmfd sp!, {r4-r12, pc}
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ENDP
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END
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@ -0,0 +1,176 @@
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;
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; Copyright (c) 2011 The WebM project authors. All Rights Reserved.
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;
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; Use of this source code is governed by a BSD-style license
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; that can be found in the LICENSE file in the root of the source
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; tree. An additional intellectual property rights grant can be found
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; in the file PATENTS. All contributing project authors may
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; be found in the AUTHORS file in the root of the source tree.
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;
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EXPORT |vp8_variance_halfpixvar16x16_h_armv6|
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ARM
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REQUIRE8
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PRESERVE8
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AREA ||.text||, CODE, READONLY, ALIGN=2
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; r0 unsigned char *src_ptr
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; r1 int source_stride
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; r2 unsigned char *ref_ptr
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; r3 int recon_stride
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; stack unsigned int *sse
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|vp8_variance_halfpixvar16x16_h_armv6| PROC
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stmfd sp!, {r4-r12, lr}
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mov r8, #0 ; initialize sum = 0
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ldr r10, c80808080
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mov r11, #0 ; initialize sse = 0
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mov r12, #16 ; set loop counter to 16 (=block height)
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mov lr, #0 ; constant zero
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loop
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; 1st 4 pixels
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ldr r4, [r0, #0] ; load 4 src pixels
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ldr r6, [r0, #1] ; load 4 src pixels with 1 byte offset
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ldr r5, [r2, #0] ; load 4 ref pixels
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; bilinear interpolation
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mvn r6, r6
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uhsub8 r4, r4, r6
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eor r4, r4, r10
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usub8 r6, r4, r5 ; calculate difference
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sel r7, r6, lr ; select bytes with positive difference
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usub8 r6, r5, r4 ; calculate difference with reversed operands
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sel r6, r6, lr ; select bytes with negative difference
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; calculate partial sums
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usad8 r4, r7, lr ; calculate sum of positive differences
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usad8 r5, r6, lr ; calculate sum of negative differences
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orr r6, r6, r7 ; differences of all 4 pixels
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; calculate total sum
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adds r8, r8, r4 ; add positive differences to sum
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subs r8, r8, r5 ; substract negative differences from sum
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; calculate sse
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uxtb16 r5, r6 ; byte (two pixels) to halfwords
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uxtb16 r7, r6, ror #8 ; another two pixels to halfwords
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smlad r11, r5, r5, r11 ; dual signed multiply, add and accumulate (1)
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; 2nd 4 pixels
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ldr r4, [r0, #4] ; load 4 src pixels
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ldr r6, [r0, #5] ; load 4 src pixels with 1 byte offset
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ldr r5, [r2, #4] ; load 4 ref pixels
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; bilinear interpolation
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mvn r6, r6
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uhsub8 r4, r4, r6
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eor r4, r4, r10
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smlad r11, r7, r7, r11 ; dual signed multiply, add and accumulate (2)
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usub8 r6, r4, r5 ; calculate difference
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sel r7, r6, lr ; select bytes with positive difference
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usub8 r6, r5, r4 ; calculate difference with reversed operands
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sel r6, r6, lr ; select bytes with negative difference
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; calculate partial sums
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usad8 r4, r7, lr ; calculate sum of positive differences
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usad8 r5, r6, lr ; calculate sum of negative differences
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orr r6, r6, r7 ; differences of all 4 pixels
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; calculate total sum
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add r8, r8, r4 ; add positive differences to sum
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sub r8, r8, r5 ; substract negative differences from sum
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; calculate sse
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uxtb16 r5, r6 ; byte (two pixels) to halfwords
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uxtb16 r7, r6, ror #8 ; another two pixels to halfwords
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smlad r11, r5, r5, r11 ; dual signed multiply, add and accumulate (1)
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; 3rd 4 pixels
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ldr r4, [r0, #8] ; load 4 src pixels
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ldr r6, [r0, #9] ; load 4 src pixels with 1 byte offset
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ldr r5, [r2, #8] ; load 4 ref pixels
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; bilinear interpolation
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mvn r6, r6
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uhsub8 r4, r4, r6
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eor r4, r4, r10
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smlad r11, r7, r7, r11 ; dual signed multiply, add and accumulate (2)
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usub8 r6, r4, r5 ; calculate difference
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sel r7, r6, lr ; select bytes with positive difference
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usub8 r6, r5, r4 ; calculate difference with reversed operands
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sel r6, r6, lr ; select bytes with negative difference
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; calculate partial sums
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usad8 r4, r7, lr ; calculate sum of positive differences
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usad8 r5, r6, lr ; calculate sum of negative differences
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orr r6, r6, r7 ; differences of all 4 pixels
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; calculate total sum
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add r8, r8, r4 ; add positive differences to sum
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sub r8, r8, r5 ; substract negative differences from sum
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; calculate sse
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uxtb16 r5, r6 ; byte (two pixels) to halfwords
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uxtb16 r7, r6, ror #8 ; another two pixels to halfwords
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smlad r11, r5, r5, r11 ; dual signed multiply, add and accumulate (1)
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; 4th 4 pixels
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ldr r4, [r0, #12] ; load 4 src pixels
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ldr r6, [r0, #13] ; load 4 src pixels with 1 byte offset
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ldr r5, [r2, #12] ; load 4 ref pixels
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; bilinear interpolation
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mvn r6, r6
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uhsub8 r4, r4, r6
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eor r4, r4, r10
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smlad r11, r7, r7, r11 ; dual signed multiply, add and accumulate (2)
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usub8 r6, r4, r5 ; calculate difference
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add r0, r0, r1 ; set src_ptr to next row
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sel r7, r6, lr ; select bytes with positive difference
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usub8 r6, r5, r4 ; calculate difference with reversed operands
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add r2, r2, r3 ; set dst_ptr to next row
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sel r6, r6, lr ; select bytes with negative difference
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; calculate partial sums
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usad8 r4, r7, lr ; calculate sum of positive differences
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usad8 r5, r6, lr ; calculate sum of negative differences
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orr r6, r6, r7 ; differences of all 4 pixels
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; calculate total sum
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add r8, r8, r4 ; add positive differences to sum
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sub r8, r8, r5 ; substract negative differences from sum
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; calculate sse
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uxtb16 r5, r6 ; byte (two pixels) to halfwords
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uxtb16 r7, r6, ror #8 ; another two pixels to halfwords
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smlad r11, r5, r5, r11 ; dual signed multiply, add and accumulate (1)
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smlad r11, r7, r7, r11 ; dual signed multiply, add and accumulate (2)
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subs r12, r12, #1
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bne loop
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; return stuff
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ldr r6, [sp, #40] ; get address of sse
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mul r0, r8, r8 ; sum * sum
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str r11, [r6] ; store sse
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sub r0, r11, r0, asr #8 ; return (sse - ((sum * sum) >> 8))
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ldmfd sp!, {r4-r12, pc}
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ENDP
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c80808080
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DCD 0x80808080
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END
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@ -0,0 +1,216 @@
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;
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; Copyright (c) 2011 The WebM project authors. All Rights Reserved.
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;
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; Use of this source code is governed by a BSD-style license
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; that can be found in the LICENSE file in the root of the source
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; tree. An additional intellectual property rights grant can be found
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; in the file PATENTS. All contributing project authors may
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; be found in the AUTHORS file in the root of the source tree.
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;
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EXPORT |vp8_variance_halfpixvar16x16_hv_armv6|
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ARM
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REQUIRE8
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PRESERVE8
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AREA ||.text||, CODE, READONLY, ALIGN=2
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; r0 unsigned char *src_ptr
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; r1 int source_stride
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; r2 unsigned char *ref_ptr
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; r3 int recon_stride
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; stack unsigned int *sse
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|vp8_variance_halfpixvar16x16_hv_armv6| PROC
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stmfd sp!, {r4-r12, lr}
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mov r8, #0 ; initialize sum = 0
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ldr r10, c80808080
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mov r11, #0 ; initialize sse = 0
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mov r12, #16 ; set loop counter to 16 (=block height)
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mov lr, #0 ; constant zero
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loop
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add r9, r0, r1 ; pointer to pixels on the next row
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; 1st 4 pixels
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ldr r4, [r0, #0] ; load source pixels a, row N
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ldr r6, [r0, #1] ; load source pixels b, row N
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ldr r5, [r9, #0] ; load source pixels c, row N+1
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ldr r7, [r9, #1] ; load source pixels d, row N+1
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; x = (a + b + 1) >> 1, interpolate pixels horizontally on row N
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mvn r6, r6
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uhsub8 r4, r4, r6
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eor r4, r4, r10
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; y = (c + d + 1) >> 1, interpolate pixels horizontally on row N+1
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mvn r7, r7
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uhsub8 r5, r5, r7
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eor r5, r5, r10
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; z = (x + y + 1) >> 1, interpolate half pixel values vertically
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mvn r5, r5
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uhsub8 r4, r4, r5
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ldr r5, [r2, #0] ; load 4 ref pixels
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eor r4, r4, r10
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usub8 r6, r4, r5 ; calculate difference
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sel r7, r6, lr ; select bytes with positive difference
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usub8 r6, r5, r4 ; calculate difference with reversed operands
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sel r6, r6, lr ; select bytes with negative difference
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; calculate partial sums
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usad8 r4, r7, lr ; calculate sum of positive differences
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usad8 r5, r6, lr ; calculate sum of negative differences
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orr r6, r6, r7 ; differences of all 4 pixels
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; calculate total sum
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adds r8, r8, r4 ; add positive differences to sum
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subs r8, r8, r5 ; substract negative differences from sum
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; calculate sse
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uxtb16 r5, r6 ; byte (two pixels) to halfwords
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uxtb16 r7, r6, ror #8 ; another two pixels to halfwords
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smlad r11, r5, r5, r11 ; dual signed multiply, add and accumulate (1)
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; 2nd 4 pixels
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ldr r4, [r0, #4] ; load source pixels a, row N
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ldr r6, [r0, #5] ; load source pixels b, row N
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ldr r5, [r9, #4] ; load source pixels c, row N+1
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smlad r11, r7, r7, r11 ; dual signed multiply, add and accumulate (2)
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ldr r7, [r9, #5] ; load source pixels d, row N+1
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; x = (a + b + 1) >> 1, interpolate pixels horizontally on row N
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mvn r6, r6
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uhsub8 r4, r4, r6
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eor r4, r4, r10
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; y = (c + d + 1) >> 1, interpolate pixels horizontally on row N+1
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mvn r7, r7
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uhsub8 r5, r5, r7
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eor r5, r5, r10
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; z = (x + y + 1) >> 1, interpolate half pixel values vertically
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mvn r5, r5
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uhsub8 r4, r4, r5
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ldr r5, [r2, #4] ; load 4 ref pixels
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eor r4, r4, r10
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usub8 r6, r4, r5 ; calculate difference
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sel r7, r6, lr ; select bytes with positive difference
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usub8 r6, r5, r4 ; calculate difference with reversed operands
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sel r6, r6, lr ; select bytes with negative difference
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; calculate partial sums
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usad8 r4, r7, lr ; calculate sum of positive differences
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usad8 r5, r6, lr ; calculate sum of negative differences
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orr r6, r6, r7 ; differences of all 4 pixels
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; calculate total sum
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add r8, r8, r4 ; add positive differences to sum
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sub r8, r8, r5 ; substract negative differences from sum
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; calculate sse
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uxtb16 r5, r6 ; byte (two pixels) to halfwords
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uxtb16 r7, r6, ror #8 ; another two pixels to halfwords
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smlad r11, r5, r5, r11 ; dual signed multiply, add and accumulate (1)
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; 3rd 4 pixels
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ldr r4, [r0, #8] ; load source pixels a, row N
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ldr r6, [r0, #9] ; load source pixels b, row N
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ldr r5, [r9, #8] ; load source pixels c, row N+1
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smlad r11, r7, r7, r11 ; dual signed multiply, add and accumulate (2)
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ldr r7, [r9, #9] ; load source pixels d, row N+1
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; x = (a + b + 1) >> 1, interpolate pixels horizontally on row N
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mvn r6, r6
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uhsub8 r4, r4, r6
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eor r4, r4, r10
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; y = (c + d + 1) >> 1, interpolate pixels horizontally on row N+1
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mvn r7, r7
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uhsub8 r5, r5, r7
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eor r5, r5, r10
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; z = (x + y + 1) >> 1, interpolate half pixel values vertically
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mvn r5, r5
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uhsub8 r4, r4, r5
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ldr r5, [r2, #8] ; load 4 ref pixels
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eor r4, r4, r10
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usub8 r6, r4, r5 ; calculate difference
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sel r7, r6, lr ; select bytes with positive difference
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usub8 r6, r5, r4 ; calculate difference with reversed operands
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sel r6, r6, lr ; select bytes with negative difference
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; calculate partial sums
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usad8 r4, r7, lr ; calculate sum of positive differences
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usad8 r5, r6, lr ; calculate sum of negative differences
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orr r6, r6, r7 ; differences of all 4 pixels
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; calculate total sum
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add r8, r8, r4 ; add positive differences to sum
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sub r8, r8, r5 ; substract negative differences from sum
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; calculate sse
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uxtb16 r5, r6 ; byte (two pixels) to halfwords
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uxtb16 r7, r6, ror #8 ; another two pixels to halfwords
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smlad r11, r5, r5, r11 ; dual signed multiply, add and accumulate (1)
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; 4th 4 pixels
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ldr r4, [r0, #12] ; load source pixels a, row N
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ldr r6, [r0, #13] ; load source pixels b, row N
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ldr r5, [r9, #12] ; load source pixels c, row N+1
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smlad r11, r7, r7, r11 ; dual signed multiply, add and accumulate (2)
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ldr r7, [r9, #13] ; load source pixels d, row N+1
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; x = (a + b + 1) >> 1, interpolate pixels horizontally on row N
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mvn r6, r6
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uhsub8 r4, r4, r6
|
||||
eor r4, r4, r10
|
||||
; y = (c + d + 1) >> 1, interpolate pixels horizontally on row N+1
|
||||
mvn r7, r7
|
||||
uhsub8 r5, r5, r7
|
||||
eor r5, r5, r10
|
||||
; z = (x + y + 1) >> 1, interpolate half pixel values vertically
|
||||
mvn r5, r5
|
||||
uhsub8 r4, r4, r5
|
||||
ldr r5, [r2, #12] ; load 4 ref pixels
|
||||
eor r4, r4, r10
|
||||
|
||||
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 ; substract 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)
|
||||
subs r12, r12, #1
|
||||
smlad r11, r7, r7, r11 ; dual signed multiply, add and accumulate (2)
|
||||
|
||||
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, asr #8 ; return (sse - ((sum * sum) >> 8))
|
||||
|
||||
ldmfd sp!, {r4-r12, pc}
|
||||
|
||||
ENDP
|
||||
|
||||
c80808080
|
||||
DCD 0x80808080
|
||||
|
||||
END
|
||||
|
|
@ -0,0 +1,178 @@
|
|||
;
|
||||
; Copyright (c) 2011 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_variance_halfpixvar16x16_v_armv6|
|
||||
|
||||
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
|
||||
|vp8_variance_halfpixvar16x16_v_armv6| PROC
|
||||
|
||||
stmfd sp!, {r4-r12, lr}
|
||||
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
|
||||
add r9, r0, r1 ; set src pointer to next row
|
||||
; 1st 4 pixels
|
||||
ldr r4, [r0, #0] ; load 4 src pixels
|
||||
ldr r6, [r9, #0] ; load 4 src pixels from next row
|
||||
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
|
||||
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
|
||||
adds r8, r8, r4 ; add positive differences to sum
|
||||
subs r8, r8, r5 ; substract 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, [r9, #4] ; load 4 src pixels from next row
|
||||
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 ; substract 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, [r9, #8] ; load 4 src pixels from next row
|
||||
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 ; substract 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, [r9, #12] ; load 4 src pixels from next row
|
||||
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 ; substract 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, asr #8 ; return (sse - ((sum * sum) >> 8))
|
||||
|
||||
ldmfd sp!, {r4-r12, pc}
|
||||
|
||||
ENDP
|
||||
|
||||
c80808080
|
||||
DCD 0x80808080
|
||||
|
||||
END
|
||||
|
||||
|
|
@ -57,7 +57,25 @@ unsigned int vp8_sub_pixel_variance16x16_armv6
|
|||
unsigned short first_pass[36*16];
|
||||
unsigned char second_pass[20*16];
|
||||
const short *HFilter, *VFilter;
|
||||
unsigned int var;
|
||||
|
||||
if (xoffset == 4 && yoffset == 0)
|
||||
{
|
||||
var = vp8_variance_halfpixvar16x16_h_armv6(src_ptr, src_pixels_per_line,
|
||||
dst_ptr, dst_pixels_per_line, sse);
|
||||
}
|
||||
else if (xoffset == 0 && yoffset == 4)
|
||||
{
|
||||
var = vp8_variance_halfpixvar16x16_v_armv6(src_ptr, src_pixels_per_line,
|
||||
dst_ptr, dst_pixels_per_line, sse);
|
||||
}
|
||||
else if (xoffset == 4 && yoffset == 4)
|
||||
{
|
||||
var = vp8_variance_halfpixvar16x16_hv_armv6(src_ptr, src_pixels_per_line,
|
||||
dst_ptr, dst_pixels_per_line, sse);
|
||||
}
|
||||
else
|
||||
{
|
||||
HFilter = vp8_bilinear_filters[xoffset];
|
||||
VFilter = vp8_bilinear_filters[yoffset];
|
||||
|
||||
|
|
@ -67,41 +85,10 @@ unsigned int vp8_sub_pixel_variance16x16_armv6
|
|||
vp8_filter_block2d_bil_second_pass_armv6(first_pass, second_pass,
|
||||
16, 16, 16, VFilter);
|
||||
|
||||
return vp8_variance16x16_armv6(second_pass, 16, dst_ptr,
|
||||
var = vp8_variance16x16_armv6(second_pass, 16, dst_ptr,
|
||||
dst_pixels_per_line, sse);
|
||||
}
|
||||
|
||||
unsigned int vp8_variance_halfpixvar16x16_h_armv6(
|
||||
const unsigned char *src_ptr,
|
||||
int source_stride,
|
||||
const unsigned char *ref_ptr,
|
||||
int recon_stride,
|
||||
unsigned int *sse)
|
||||
{
|
||||
return vp8_sub_pixel_variance16x16_armv6(src_ptr, source_stride, 4, 0,
|
||||
ref_ptr, recon_stride, sse);
|
||||
}
|
||||
|
||||
unsigned int vp8_variance_halfpixvar16x16_v_armv6(
|
||||
const unsigned char *src_ptr,
|
||||
int source_stride,
|
||||
const unsigned char *ref_ptr,
|
||||
int recon_stride,
|
||||
unsigned int *sse)
|
||||
{
|
||||
return vp8_sub_pixel_variance16x16_armv6(src_ptr, source_stride, 0, 4,
|
||||
ref_ptr, recon_stride, sse);
|
||||
}
|
||||
|
||||
unsigned int vp8_variance_halfpixvar16x16_hv_armv6(
|
||||
const unsigned char *src_ptr,
|
||||
int source_stride,
|
||||
const unsigned char *ref_ptr,
|
||||
int recon_stride,
|
||||
unsigned int *sse)
|
||||
{
|
||||
return vp8_sub_pixel_variance16x16_armv6(src_ptr, source_stride, 4, 4,
|
||||
ref_ptr, recon_stride, sse);
|
||||
return var;
|
||||
}
|
||||
|
||||
#endif /* HAVE_ARMV6 */
|
||||
|
|
|
|||
|
|
@ -39,6 +39,9 @@ VP8_CX_SRCS-$(HAVE_ARMV6) += encoder/arm/armv6/vp8_fast_fdct4x4_armv6$(ASM)
|
|||
VP8_CX_SRCS-$(HAVE_ARMV6) += encoder/arm/armv6/vp8_fast_quantize_b_armv6$(ASM)
|
||||
VP8_CX_SRCS-$(HAVE_ARMV6) += encoder/arm/armv6/vp8_sad16x16_armv6$(ASM)
|
||||
VP8_CX_SRCS-$(HAVE_ARMV6) += encoder/arm/armv6/vp8_variance16x16_armv6$(ASM)
|
||||
VP8_CX_SRCS-$(HAVE_ARMV6) += encoder/arm/armv6/vp8_variance_halfpixvar16x16_h_armv6$(ASM)
|
||||
VP8_CX_SRCS-$(HAVE_ARMV6) += encoder/arm/armv6/vp8_variance_halfpixvar16x16_v_armv6$(ASM)
|
||||
VP8_CX_SRCS-$(HAVE_ARMV6) += encoder/arm/armv6/vp8_variance_halfpixvar16x16_hv_armv6$(ASM)
|
||||
VP8_CX_SRCS-$(HAVE_ARMV6) += encoder/arm/armv6/vp8_mse16x16_armv6$(ASM)
|
||||
VP8_CX_SRCS-$(HAVE_ARMV6) += encoder/arm/armv6/vp8_variance8x8_armv6$(ASM)
|
||||
VP8_CX_SRCS-$(HAVE_ARMV6) += encoder/arm/armv6/walsh_v6$(ASM)
|
||||
|
|
|
|||
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