| ; |
| ; 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. |
| ; |
| |
| |
| .globl vp8_get8x8var_ppc |
| .globl vp8_get16x16var_ppc |
| .globl vp8_mse16x16_ppc |
| .globl vp8_variance16x16_ppc |
| .globl vp8_variance16x8_ppc |
| .globl vp8_variance8x16_ppc |
| .globl vp8_variance8x8_ppc |
| .globl vp8_variance4x4_ppc |
| |
| .macro load_aligned_16 V R O |
| lvsl v3, 0, \R ;# permutate value for alignment |
| |
| lvx v1, 0, \R |
| lvx v2, \O, \R |
| |
| vperm \V, v1, v2, v3 |
| .endm |
| |
| .macro prologue |
| mfspr r11, 256 ;# get old VRSAVE |
| oris r12, r11, 0xffc0 |
| mtspr 256, r12 ;# set VRSAVE |
| |
| stwu r1, -32(r1) ;# create space on the stack |
| |
| li r10, 16 ;# load offset and loop counter |
| |
| vspltisw v7, 0 ;# zero for merging |
| vspltisw v8, 0 ;# zero out total to start |
| vspltisw v9, 0 ;# zero out total for dif^2 |
| .endm |
| |
| .macro epilogue |
| addi r1, r1, 32 ;# recover stack |
| |
| mtspr 256, r11 ;# reset old VRSAVE |
| .endm |
| |
| .macro compute_sum_sse |
| ;# Compute sum first. Unpack to so signed subract |
| ;# can be used. Only have a half word signed |
| ;# subract. Do high, then low. |
| vmrghb v2, v7, v4 |
| vmrghb v3, v7, v5 |
| vsubshs v2, v2, v3 |
| vsum4shs v8, v2, v8 |
| |
| vmrglb v2, v7, v4 |
| vmrglb v3, v7, v5 |
| vsubshs v2, v2, v3 |
| vsum4shs v8, v2, v8 |
| |
| ;# Now compute sse. |
| vsububs v2, v4, v5 |
| vsububs v3, v5, v4 |
| vor v2, v2, v3 |
| |
| vmsumubm v9, v2, v2, v9 |
| .endm |
| |
| .macro variance_16 DS loop_label store_sum |
| \loop_label: |
| ;# only one of the inputs should need to be aligned. |
| load_aligned_16 v4, r3, r10 |
| load_aligned_16 v5, r5, r10 |
| |
| ;# move onto the next line |
| add r3, r3, r4 |
| add r5, r5, r6 |
| |
| compute_sum_sse |
| |
| bdnz \loop_label |
| |
| vsumsws v8, v8, v7 |
| vsumsws v9, v9, v7 |
| |
| stvx v8, 0, r1 |
| lwz r3, 12(r1) |
| |
| stvx v9, 0, r1 |
| lwz r4, 12(r1) |
| |
| .if \store_sum |
| stw r3, 0(r8) ;# sum |
| .endif |
| stw r4, 0(r7) ;# sse |
| |
| mullw r3, r3, r3 ;# sum*sum |
| srawi r3, r3, \DS ;# (sum*sum) >> DS |
| subf r3, r3, r4 ;# sse - ((sum*sum) >> DS) |
| .endm |
| |
| .macro variance_8 DS loop_label store_sum |
| \loop_label: |
| ;# only one of the inputs should need to be aligned. |
| load_aligned_16 v4, r3, r10 |
| load_aligned_16 v5, r5, r10 |
| |
| ;# move onto the next line |
| add r3, r3, r4 |
| add r5, r5, r6 |
| |
| ;# only one of the inputs should need to be aligned. |
| load_aligned_16 v6, r3, r10 |
| load_aligned_16 v0, r5, r10 |
| |
| ;# move onto the next line |
| add r3, r3, r4 |
| add r5, r5, r6 |
| |
| vmrghb v4, v4, v6 |
| vmrghb v5, v5, v0 |
| |
| compute_sum_sse |
| |
| bdnz \loop_label |
| |
| vsumsws v8, v8, v7 |
| vsumsws v9, v9, v7 |
| |
| stvx v8, 0, r1 |
| lwz r3, 12(r1) |
| |
| stvx v9, 0, r1 |
| lwz r4, 12(r1) |
| |
| .if \store_sum |
| stw r3, 0(r8) ;# sum |
| .endif |
| stw r4, 0(r7) ;# sse |
| |
| mullw r3, r3, r3 ;# sum*sum |
| srawi r3, r3, \DS ;# (sum*sum) >> 8 |
| subf r3, r3, r4 ;# sse - ((sum*sum) >> 8) |
| .endm |
| |
| .align 2 |
| ;# r3 unsigned char *src_ptr |
| ;# r4 int source_stride |
| ;# r5 unsigned char *ref_ptr |
| ;# r6 int recon_stride |
| ;# r7 unsigned int *SSE |
| ;# r8 int *Sum |
| ;# |
| ;# r3 return value |
| vp8_get8x8var_ppc: |
| |
| prologue |
| |
| li r9, 4 |
| mtctr r9 |
| |
| variance_8 6, get8x8var_loop, 1 |
| |
| epilogue |
| |
| blr |
| |
| .align 2 |
| ;# r3 unsigned char *src_ptr |
| ;# r4 int source_stride |
| ;# r5 unsigned char *ref_ptr |
| ;# r6 int recon_stride |
| ;# r7 unsigned int *SSE |
| ;# r8 int *Sum |
| ;# |
| ;# r3 return value |
| vp8_get16x16var_ppc: |
| |
| prologue |
| |
| mtctr r10 |
| |
| variance_16 8, get16x16var_loop, 1 |
| |
| epilogue |
| |
| blr |
| |
| .align 2 |
| ;# r3 unsigned char *src_ptr |
| ;# r4 int source_stride |
| ;# r5 unsigned char *ref_ptr |
| ;# r6 int recon_stride |
| ;# r7 unsigned int *sse |
| ;# |
| ;# r 3 return value |
| vp8_mse16x16_ppc: |
| prologue |
| |
| mtctr r10 |
| |
| mse16x16_loop: |
| ;# only one of the inputs should need to be aligned. |
| load_aligned_16 v4, r3, r10 |
| load_aligned_16 v5, r5, r10 |
| |
| ;# move onto the next line |
| add r3, r3, r4 |
| add r5, r5, r6 |
| |
| ;# Now compute sse. |
| vsububs v2, v4, v5 |
| vsububs v3, v5, v4 |
| vor v2, v2, v3 |
| |
| vmsumubm v9, v2, v2, v9 |
| |
| bdnz mse16x16_loop |
| |
| vsumsws v9, v9, v7 |
| |
| stvx v9, 0, r1 |
| lwz r3, 12(r1) |
| |
| stvx v9, 0, r1 |
| lwz r3, 12(r1) |
| |
| stw r3, 0(r7) ;# sse |
| |
| epilogue |
| |
| blr |
| |
| .align 2 |
| ;# r3 unsigned char *src_ptr |
| ;# r4 int source_stride |
| ;# r5 unsigned char *ref_ptr |
| ;# r6 int recon_stride |
| ;# r7 unsigned int *sse |
| ;# |
| ;# r3 return value |
| vp8_variance16x16_ppc: |
| |
| prologue |
| |
| mtctr r10 |
| |
| variance_16 8, variance16x16_loop, 0 |
| |
| epilogue |
| |
| blr |
| |
| .align 2 |
| ;# r3 unsigned char *src_ptr |
| ;# r4 int source_stride |
| ;# r5 unsigned char *ref_ptr |
| ;# r6 int recon_stride |
| ;# r7 unsigned int *sse |
| ;# |
| ;# r3 return value |
| vp8_variance16x8_ppc: |
| |
| prologue |
| |
| li r9, 8 |
| mtctr r9 |
| |
| variance_16 7, variance16x8_loop, 0 |
| |
| epilogue |
| |
| blr |
| |
| .align 2 |
| ;# r3 unsigned char *src_ptr |
| ;# r4 int source_stride |
| ;# r5 unsigned char *ref_ptr |
| ;# r6 int recon_stride |
| ;# r7 unsigned int *sse |
| ;# |
| ;# r3 return value |
| vp8_variance8x16_ppc: |
| |
| prologue |
| |
| li r9, 8 |
| mtctr r9 |
| |
| variance_8 7, variance8x16_loop, 0 |
| |
| epilogue |
| |
| blr |
| |
| .align 2 |
| ;# r3 unsigned char *src_ptr |
| ;# r4 int source_stride |
| ;# r5 unsigned char *ref_ptr |
| ;# r6 int recon_stride |
| ;# r7 unsigned int *sse |
| ;# |
| ;# r3 return value |
| vp8_variance8x8_ppc: |
| |
| prologue |
| |
| li r9, 4 |
| mtctr r9 |
| |
| variance_8 6, variance8x8_loop, 0 |
| |
| epilogue |
| |
| blr |
| |
| .macro transfer_4x4 I P |
| lwz r0, 0(\I) |
| add \I, \I, \P |
| |
| lwz r10,0(\I) |
| add \I, \I, \P |
| |
| lwz r8, 0(\I) |
| add \I, \I, \P |
| |
| lwz r9, 0(\I) |
| |
| stw r0, 0(r1) |
| stw r10, 4(r1) |
| stw r8, 8(r1) |
| stw r9, 12(r1) |
| .endm |
| |
| .align 2 |
| ;# r3 unsigned char *src_ptr |
| ;# r4 int source_stride |
| ;# r5 unsigned char *ref_ptr |
| ;# r6 int recon_stride |
| ;# r7 unsigned int *sse |
| ;# |
| ;# r3 return value |
| vp8_variance4x4_ppc: |
| |
| prologue |
| |
| transfer_4x4 r3, r4 |
| lvx v4, 0, r1 |
| |
| transfer_4x4 r5, r6 |
| lvx v5, 0, r1 |
| |
| compute_sum_sse |
| |
| vsumsws v8, v8, v7 |
| vsumsws v9, v9, v7 |
| |
| stvx v8, 0, r1 |
| lwz r3, 12(r1) |
| |
| stvx v9, 0, r1 |
| lwz r4, 12(r1) |
| |
| stw r4, 0(r7) ;# sse |
| |
| mullw r3, r3, r3 ;# sum*sum |
| srawi r3, r3, 4 ;# (sum*sum) >> 4 |
| subf r3, r3, r4 ;# sse - ((sum*sum) >> 4) |
| |
| epilogue |
| |
| blr |
