| Index: third_party/libvpx/source/libvpx/vpx_dsp/arm/sad_media.asm
|
| diff --git a/third_party/libvpx/source/libvpx/vpx_dsp/arm/sad_media.asm b/third_party/libvpx/source/libvpx/vpx_dsp/arm/sad_media.asm
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..aed1d3a22ed54f2bc84abaf375f00f9cff9c8365
|
| --- /dev/null
|
| +++ b/third_party/libvpx/source/libvpx/vpx_dsp/arm/sad_media.asm
|
| @@ -0,0 +1,95 @@
|
| +;
|
| +; 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 |vpx_sad16x16_media|
|
| +
|
| + ARM
|
| + REQUIRE8
|
| + PRESERVE8
|
| +
|
| + AREA ||.text||, CODE, READONLY, ALIGN=2
|
| +
|
| +; r0 const unsigned char *src_ptr
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| +; r1 int src_stride
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| +; r2 const unsigned char *ref_ptr
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| +; r3 int ref_stride
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| +|vpx_sad16x16_media| PROC
|
| + stmfd sp!, {r4-r12, lr}
|
| +
|
| + pld [r0, r1, lsl #0]
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| + pld [r2, r3, lsl #0]
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| + pld [r0, r1, lsl #1]
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| + pld [r2, r3, lsl #1]
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| +
|
| + mov r4, #0 ; sad = 0;
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| + mov r5, #8 ; loop count
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| +
|
| +loop
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| + ; 1st row
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| + ldr r6, [r0, #0x0] ; load 4 src pixels (1A)
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| + ldr r8, [r2, #0x0] ; load 4 ref pixels (1A)
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| + ldr r7, [r0, #0x4] ; load 4 src pixels (1A)
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| + ldr r9, [r2, #0x4] ; load 4 ref pixels (1A)
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| + ldr r10, [r0, #0x8] ; load 4 src pixels (1B)
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| + ldr r11, [r0, #0xC] ; load 4 src pixels (1B)
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| +
|
| + usada8 r4, r8, r6, r4 ; calculate sad for 4 pixels
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| + usad8 r8, r7, r9 ; calculate sad for 4 pixels
|
| +
|
| + ldr r12, [r2, #0x8] ; load 4 ref pixels (1B)
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| + ldr lr, [r2, #0xC] ; load 4 ref pixels (1B)
|
| +
|
| + add r0, r0, r1 ; set src pointer to next row
|
| + add r2, r2, r3 ; set dst pointer to next row
|
| +
|
| + pld [r0, r1, lsl #1]
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| + pld [r2, r3, lsl #1]
|
| +
|
| + usada8 r4, r10, r12, r4 ; calculate sad for 4 pixels
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| + usada8 r8, r11, lr, r8 ; calculate sad for 4 pixels
|
| +
|
| + ldr r6, [r0, #0x0] ; load 4 src pixels (2A)
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| + ldr r7, [r0, #0x4] ; load 4 src pixels (2A)
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| + add r4, r4, r8 ; add partial sad values
|
| +
|
| + ; 2nd row
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| + ldr r8, [r2, #0x0] ; load 4 ref pixels (2A)
|
| + ldr r9, [r2, #0x4] ; load 4 ref pixels (2A)
|
| + ldr r10, [r0, #0x8] ; load 4 src pixels (2B)
|
| + ldr r11, [r0, #0xC] ; load 4 src pixels (2B)
|
| +
|
| + usada8 r4, r6, r8, r4 ; calculate sad for 4 pixels
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| + usad8 r8, r7, r9 ; calculate sad for 4 pixels
|
| +
|
| + ldr r12, [r2, #0x8] ; load 4 ref pixels (2B)
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| + ldr lr, [r2, #0xC] ; load 4 ref pixels (2B)
|
| +
|
| + add r0, r0, r1 ; set src pointer to next row
|
| + add r2, r2, r3 ; set dst pointer to next row
|
| +
|
| + usada8 r4, r10, r12, r4 ; calculate sad for 4 pixels
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| + usada8 r8, r11, lr, r8 ; calculate sad for 4 pixels
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| +
|
| + pld [r0, r1, lsl #1]
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| + pld [r2, r3, lsl #1]
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| +
|
| + subs r5, r5, #1 ; decrement loop counter
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| + add r4, r4, r8 ; add partial sad values
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| +
|
| + bne loop
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| +
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| + mov r0, r4 ; return sad
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| + ldmfd sp!, {r4-r12, pc}
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| +
|
| + ENDP
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| +
|
| + END
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| +
|
|
|