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Diffstat (limited to 'chromium/third_party/libvpx/source/libvpx/vp8/common/arm/armv6/loopfilter_v6.asm')
-rw-r--r--chromium/third_party/libvpx/source/libvpx/vp8/common/arm/armv6/loopfilter_v6.asm1282
1 files changed, 0 insertions, 1282 deletions
diff --git a/chromium/third_party/libvpx/source/libvpx/vp8/common/arm/armv6/loopfilter_v6.asm b/chromium/third_party/libvpx/source/libvpx/vp8/common/arm/armv6/loopfilter_v6.asm
deleted file mode 100644
index 1cbbbcdef5e..00000000000
--- a/chromium/third_party/libvpx/source/libvpx/vp8/common/arm/armv6/loopfilter_v6.asm
+++ /dev/null
@@ -1,1282 +0,0 @@
-;
-; 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_armv6|
- EXPORT |vp8_mbloop_filter_horizontal_edge_armv6|
- EXPORT |vp8_loop_filter_vertical_edge_armv6|
- EXPORT |vp8_mbloop_filter_vertical_edge_armv6|
-
- AREA |.text|, CODE, READONLY ; name this block of code
-
- MACRO
- TRANSPOSE_MATRIX $a0, $a1, $a2, $a3, $b0, $b1, $b2, $b3
- ; input: $a0, $a1, $a2, $a3; output: $b0, $b1, $b2, $b3
- ; a0: 03 02 01 00
- ; a1: 13 12 11 10
- ; a2: 23 22 21 20
- ; a3: 33 32 31 30
- ; b3 b2 b1 b0
-
- uxtb16 $b1, $a1 ; xx 12 xx 10
- uxtb16 $b0, $a0 ; xx 02 xx 00
- uxtb16 $b3, $a3 ; xx 32 xx 30
- uxtb16 $b2, $a2 ; xx 22 xx 20
- orr $b1, $b0, $b1, lsl #8 ; 12 02 10 00
- orr $b3, $b2, $b3, lsl #8 ; 32 22 30 20
-
- uxtb16 $a1, $a1, ror #8 ; xx 13 xx 11
- uxtb16 $a3, $a3, ror #8 ; xx 33 xx 31
- uxtb16 $a0, $a0, ror #8 ; xx 03 xx 01
- uxtb16 $a2, $a2, ror #8 ; xx 23 xx 21
- orr $a0, $a0, $a1, lsl #8 ; 13 03 11 01
- orr $a2, $a2, $a3, lsl #8 ; 33 23 31 21
-
- pkhtb $b2, $b3, $b1, asr #16 ; 32 22 12 02 -- p1
- pkhbt $b0, $b1, $b3, lsl #16 ; 30 20 10 00 -- p3
-
- pkhtb $b3, $a2, $a0, asr #16 ; 33 23 13 03 -- p0
- pkhbt $b1, $a0, $a2, lsl #16 ; 31 21 11 01 -- p2
- MEND
-
-
-src RN r0
-pstep RN r1
-count RN r5
-
-;r0 unsigned char *src_ptr,
-;r1 int src_pixel_step,
-;r2 const char *blimit,
-;r3 const char *limit,
-;stack const char *thresh,
-;stack int count
-
-;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
-|vp8_loop_filter_horizontal_edge_armv6| PROC
-;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
- stmdb sp!, {r4 - r11, lr}
-
- sub src, src, pstep, lsl #2 ; move src pointer down by 4 lines
- ldr count, [sp, #40] ; count for 8-in-parallel
- ldr r6, [sp, #36] ; load thresh address
- sub sp, sp, #16 ; create temp buffer
-
- ldr r9, [src], pstep ; p3
- ldrb r4, [r2] ; blimit
- ldr r10, [src], pstep ; p2
- ldrb r2, [r3] ; limit
- ldr r11, [src], pstep ; p1
- orr r4, r4, r4, lsl #8
- ldrb r3, [r6] ; thresh
- orr r2, r2, r2, lsl #8
- mov count, count, lsl #1 ; 4-in-parallel
- orr r4, r4, r4, lsl #16
- orr r3, r3, r3, lsl #8
- orr r2, r2, r2, lsl #16
- orr r3, r3, r3, lsl #16
-
-|Hnext8|
- ; vp8_filter_mask() function
- ; calculate breakout conditions
- ldr r12, [src], pstep ; p0
-
- uqsub8 r6, r9, r10 ; p3 - p2
- uqsub8 r7, r10, r9 ; p2 - p3
- uqsub8 r8, r10, r11 ; p2 - p1
- uqsub8 r10, r11, r10 ; p1 - p2
-
- orr r6, r6, r7 ; abs (p3-p2)
- orr r8, r8, r10 ; abs (p2-p1)
- uqsub8 lr, r6, r2 ; compare to limit. lr: vp8_filter_mask
- uqsub8 r8, r8, r2 ; compare to limit
- uqsub8 r6, r11, r12 ; p1 - p0
- orr lr, lr, r8
- uqsub8 r7, r12, r11 ; p0 - p1
- ldr r9, [src], pstep ; q0
- ldr r10, [src], pstep ; q1
- orr r6, r6, r7 ; abs (p1-p0)
- uqsub8 r7, r6, r2 ; compare to limit
- uqsub8 r8, r6, r3 ; compare to thresh -- save r8 for later
- orr lr, lr, r7
-
- uqsub8 r6, r11, r10 ; p1 - q1
- uqsub8 r7, r10, r11 ; q1 - p1
- uqsub8 r11, r12, r9 ; p0 - q0
- uqsub8 r12, r9, r12 ; q0 - p0
- orr r6, r6, r7 ; abs (p1-q1)
- ldr r7, c0x7F7F7F7F
- orr r12, r11, r12 ; abs (p0-q0)
- ldr r11, [src], pstep ; q2
- uqadd8 r12, r12, r12 ; abs (p0-q0) * 2
- and r6, r7, r6, lsr #1 ; abs (p1-q1) / 2
- uqsub8 r7, r9, r10 ; q0 - q1
- uqadd8 r12, r12, r6 ; abs (p0-q0)*2 + abs (p1-q1)/2
- uqsub8 r6, r10, r9 ; q1 - q0
- uqsub8 r12, r12, r4 ; compare to flimit
- uqsub8 r9, r11, r10 ; q2 - q1
-
- orr lr, lr, r12
-
- ldr r12, [src], pstep ; q3
- uqsub8 r10, r10, r11 ; q1 - q2
- orr r6, r7, r6 ; abs (q1-q0)
- orr r10, r9, r10 ; abs (q2-q1)
- uqsub8 r7, r6, r2 ; compare to limit
- uqsub8 r10, r10, r2 ; compare to limit
- uqsub8 r6, r6, r3 ; compare to thresh -- save r6 for later
- orr lr, lr, r7
- orr lr, lr, r10
-
- uqsub8 r10, r12, r11 ; q3 - q2
- uqsub8 r9, r11, r12 ; q2 - q3
-
- mvn r11, #0 ; r11 == -1
-
- orr r10, r10, r9 ; abs (q3-q2)
- uqsub8 r10, r10, r2 ; compare to limit
-
- mov r12, #0
- orr lr, lr, r10
- sub src, src, pstep, lsl #2
-
- usub8 lr, r12, lr ; use usub8 instead of ssub8
- sel lr, r11, r12 ; filter mask: lr
-
- cmp lr, #0
- beq hskip_filter ; skip filtering
-
- sub src, src, pstep, lsl #1 ; move src pointer down by 6 lines
-
- ;vp8_hevmask() function
- ;calculate high edge variance
- orr r10, r6, r8 ; calculate vp8_hevmask
-
- ldr r7, [src], pstep ; p1
-
- usub8 r10, r12, r10 ; use usub8 instead of ssub8
- sel r6, r12, r11 ; obtain vp8_hevmask: r6
-
- ;vp8_filter() function
- ldr r8, [src], pstep ; p0
- ldr r12, c0x80808080
- ldr r9, [src], pstep ; q0
- ldr r10, [src], pstep ; q1
-
- eor r7, r7, r12 ; p1 offset to convert to a signed value
- eor r8, r8, r12 ; p0 offset to convert to a signed value
- eor r9, r9, r12 ; q0 offset to convert to a signed value
- eor r10, r10, r12 ; q1 offset to convert to a signed value
-
- str r9, [sp] ; store qs0 temporarily
- str r8, [sp, #4] ; store ps0 temporarily
- str r10, [sp, #8] ; store qs1 temporarily
- str r7, [sp, #12] ; store ps1 temporarily
-
- qsub8 r7, r7, r10 ; vp8_signed_char_clamp(ps1-qs1)
- qsub8 r8, r9, r8 ; vp8_signed_char_clamp(vp8_filter + 3 * ( qs0 - ps0))
-
- and r7, r7, r6 ; vp8_filter (r7) &= hev
-
- qadd8 r7, r7, r8
- ldr r9, c0x03030303 ; r9 = 3 --modified for vp8
-
- qadd8 r7, r7, r8
- ldr r10, c0x04040404
-
- qadd8 r7, r7, r8
- and r7, r7, lr ; vp8_filter &= mask;
-
- ;modify code for vp8 -- Filter1 = vp8_filter (r7)
- qadd8 r8 , r7 , r9 ; Filter2 (r8) = vp8_signed_char_clamp(vp8_filter+3)
- qadd8 r7 , r7 , r10 ; vp8_filter = vp8_signed_char_clamp(vp8_filter+4)
-
- mov r9, #0
- shadd8 r8 , r8 , r9 ; Filter2 >>= 3
- shadd8 r7 , r7 , r9 ; vp8_filter >>= 3
- shadd8 r8 , r8 , r9
- shadd8 r7 , r7 , r9
- shadd8 lr , r8 , r9 ; lr: Filter2
- shadd8 r7 , r7 , r9 ; r7: filter
-
- ;usub8 lr, r8, r10 ; s = (s==4)*-1
- ;sel lr, r11, r9
- ;usub8 r8, r10, r8
- ;sel r8, r11, r9
- ;and r8, r8, lr ; -1 for each element that equals 4
-
- ;calculate output
- ;qadd8 lr, r8, r7 ; u = vp8_signed_char_clamp(s + vp8_filter)
-
- ldr r8, [sp] ; load qs0
- ldr r9, [sp, #4] ; load ps0
-
- ldr r10, c0x01010101
-
- qsub8 r8 ,r8, r7 ; u = vp8_signed_char_clamp(qs0 - vp8_filter)
- qadd8 r9, r9, lr ; u = vp8_signed_char_clamp(ps0 + Filter2)
-
- ;end of modification for vp8
-
- mov lr, #0
- sadd8 r7, r7 , r10 ; vp8_filter += 1
- shadd8 r7, r7, lr ; vp8_filter >>= 1
-
- ldr r11, [sp, #12] ; load ps1
- ldr r10, [sp, #8] ; load qs1
-
- bic r7, r7, r6 ; vp8_filter &= ~hev
- sub src, src, pstep, lsl #2
-
- qadd8 r11, r11, r7 ; u = vp8_signed_char_clamp(ps1 + vp8_filter)
- qsub8 r10, r10,r7 ; u = vp8_signed_char_clamp(qs1 - vp8_filter)
-
- eor r11, r11, r12 ; *op1 = u^0x80
- str r11, [src], pstep ; store op1
- eor r9, r9, r12 ; *op0 = u^0x80
- str r9, [src], pstep ; store op0 result
- eor r8, r8, r12 ; *oq0 = u^0x80
- str r8, [src], pstep ; store oq0 result
- eor r10, r10, r12 ; *oq1 = u^0x80
- str r10, [src], pstep ; store oq1
-
- sub src, src, pstep, lsl #1
-
-|hskip_filter|
- add src, src, #4
- sub src, src, pstep, lsl #2
-
- subs count, count, #1
-
- ldrne r9, [src], pstep ; p3
- ldrne r10, [src], pstep ; p2
- ldrne r11, [src], pstep ; p1
-
- bne Hnext8
-
- add sp, sp, #16
- ldmia sp!, {r4 - r11, pc}
- ENDP ; |vp8_loop_filter_horizontal_edge_armv6|
-
-
-;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
-|vp8_mbloop_filter_horizontal_edge_armv6| PROC
-;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
- stmdb sp!, {r4 - r11, lr}
-
- sub src, src, pstep, lsl #2 ; move src pointer down by 4 lines
- ldr count, [sp, #40] ; count for 8-in-parallel
- ldr r6, [sp, #36] ; load thresh address
- sub sp, sp, #16 ; create temp buffer
-
- ldr r9, [src], pstep ; p3
- ldrb r4, [r2] ; blimit
- ldr r10, [src], pstep ; p2
- ldrb r2, [r3] ; limit
- ldr r11, [src], pstep ; p1
- orr r4, r4, r4, lsl #8
- ldrb r3, [r6] ; thresh
- orr r2, r2, r2, lsl #8
- mov count, count, lsl #1 ; 4-in-parallel
- orr r4, r4, r4, lsl #16
- orr r3, r3, r3, lsl #8
- orr r2, r2, r2, lsl #16
- orr r3, r3, r3, lsl #16
-
-|MBHnext8|
-
- ; vp8_filter_mask() function
- ; calculate breakout conditions
- ldr r12, [src], pstep ; p0
-
- uqsub8 r6, r9, r10 ; p3 - p2
- uqsub8 r7, r10, r9 ; p2 - p3
- uqsub8 r8, r10, r11 ; p2 - p1
- uqsub8 r10, r11, r10 ; p1 - p2
-
- orr r6, r6, r7 ; abs (p3-p2)
- orr r8, r8, r10 ; abs (p2-p1)
- uqsub8 lr, r6, r2 ; compare to limit. lr: vp8_filter_mask
- uqsub8 r8, r8, r2 ; compare to limit
-
- uqsub8 r6, r11, r12 ; p1 - p0
- orr lr, lr, r8
- uqsub8 r7, r12, r11 ; p0 - p1
- ldr r9, [src], pstep ; q0
- ldr r10, [src], pstep ; q1
- orr r6, r6, r7 ; abs (p1-p0)
- uqsub8 r7, r6, r2 ; compare to limit
- uqsub8 r8, r6, r3 ; compare to thresh -- save r8 for later
- orr lr, lr, r7
-
- uqsub8 r6, r11, r10 ; p1 - q1
- uqsub8 r7, r10, r11 ; q1 - p1
- uqsub8 r11, r12, r9 ; p0 - q0
- uqsub8 r12, r9, r12 ; q0 - p0
- orr r6, r6, r7 ; abs (p1-q1)
- ldr r7, c0x7F7F7F7F
- orr r12, r11, r12 ; abs (p0-q0)
- ldr r11, [src], pstep ; q2
- uqadd8 r12, r12, r12 ; abs (p0-q0) * 2
- and r6, r7, r6, lsr #1 ; abs (p1-q1) / 2
- uqsub8 r7, r9, r10 ; q0 - q1
- uqadd8 r12, r12, r6 ; abs (p0-q0)*2 + abs (p1-q1)/2
- uqsub8 r6, r10, r9 ; q1 - q0
- uqsub8 r12, r12, r4 ; compare to flimit
- uqsub8 r9, r11, r10 ; q2 - q1
-
- orr lr, lr, r12
-
- ldr r12, [src], pstep ; q3
-
- uqsub8 r10, r10, r11 ; q1 - q2
- orr r6, r7, r6 ; abs (q1-q0)
- orr r10, r9, r10 ; abs (q2-q1)
- uqsub8 r7, r6, r2 ; compare to limit
- uqsub8 r10, r10, r2 ; compare to limit
- uqsub8 r6, r6, r3 ; compare to thresh -- save r6 for later
- orr lr, lr, r7
- orr lr, lr, r10
-
- uqsub8 r10, r12, r11 ; q3 - q2
- uqsub8 r9, r11, r12 ; q2 - q3
-
- mvn r11, #0 ; r11 == -1
-
- orr r10, r10, r9 ; abs (q3-q2)
- uqsub8 r10, r10, r2 ; compare to limit
-
- mov r12, #0
-
- orr lr, lr, r10
-
- usub8 lr, r12, lr ; use usub8 instead of ssub8
- sel lr, r11, r12 ; filter mask: lr
-
- cmp lr, #0
- beq mbhskip_filter ; skip filtering
-
- ;vp8_hevmask() function
- ;calculate high edge variance
- sub src, src, pstep, lsl #2 ; move src pointer down by 6 lines
- sub src, src, pstep, lsl #1
-
- orr r10, r6, r8
- ldr r7, [src], pstep ; p1
-
- usub8 r10, r12, r10
- sel r6, r12, r11 ; hev mask: r6
-
- ;vp8_mbfilter() function
- ;p2, q2 are only needed at the end. Don't need to load them in now.
- ldr r8, [src], pstep ; p0
- ldr r12, c0x80808080
- ldr r9, [src], pstep ; q0
- ldr r10, [src] ; q1
-
- eor r7, r7, r12 ; ps1
- eor r8, r8, r12 ; ps0
- eor r9, r9, r12 ; qs0
- eor r10, r10, r12 ; qs1
-
- qsub8 r12, r9, r8 ; vp8_signed_char_clamp(vp8_filter + 3 * ( qs0 - ps0))
- str r7, [sp, #12] ; store ps1 temporarily
- qsub8 r7, r7, r10 ; vp8_signed_char_clamp(ps1-qs1)
- str r10, [sp, #8] ; store qs1 temporarily
- qadd8 r7, r7, r12
- str r9, [sp] ; store qs0 temporarily
- qadd8 r7, r7, r12
- str r8, [sp, #4] ; store ps0 temporarily
- qadd8 r7, r7, r12 ; vp8_filter: r7
-
- ldr r10, c0x03030303 ; r10 = 3 --modified for vp8
- ldr r9, c0x04040404
-
- and r7, r7, lr ; vp8_filter &= mask (lr is free)
-
- mov r12, r7 ; Filter2: r12
- and r12, r12, r6 ; Filter2 &= hev
-
- ;modify code for vp8
- ;save bottom 3 bits so that we round one side +4 and the other +3
- qadd8 r8 , r12 , r9 ; Filter1 (r8) = vp8_signed_char_clamp(Filter2+4)
- qadd8 r12 , r12 , r10 ; Filter2 (r12) = vp8_signed_char_clamp(Filter2+3)
-
- mov r10, #0
- shadd8 r8 , r8 , r10 ; Filter1 >>= 3
- shadd8 r12 , r12 , r10 ; Filter2 >>= 3
- shadd8 r8 , r8 , r10
- shadd8 r12 , r12 , r10
- shadd8 r8 , r8 , r10 ; r8: Filter1
- shadd8 r12 , r12 , r10 ; r12: Filter2
-
- ldr r9, [sp] ; load qs0
- ldr r11, [sp, #4] ; load ps0
-
- qsub8 r9 , r9, r8 ; qs0 = vp8_signed_char_clamp(qs0 - Filter1)
- qadd8 r11, r11, r12 ; ps0 = vp8_signed_char_clamp(ps0 + Filter2)
-
- ;save bottom 3 bits so that we round one side +4 and the other +3
- ;and r8, r12, r10 ; s = Filter2 & 7 (s: r8)
- ;qadd8 r12 , r12 , r9 ; Filter2 = vp8_signed_char_clamp(Filter2+4)
- ;mov r10, #0
- ;shadd8 r12 , r12 , r10 ; Filter2 >>= 3
- ;usub8 lr, r8, r9 ; s = (s==4)*-1
- ;sel lr, r11, r10
- ;shadd8 r12 , r12 , r10
- ;usub8 r8, r9, r8
- ;sel r8, r11, r10
- ;ldr r9, [sp] ; load qs0
- ;ldr r11, [sp, #4] ; load ps0
- ;shadd8 r12 , r12 , r10
- ;and r8, r8, lr ; -1 for each element that equals 4
- ;qadd8 r10, r8, r12 ; u = vp8_signed_char_clamp(s + Filter2)
- ;qsub8 r9 , r9, r12 ; qs0 = vp8_signed_char_clamp(qs0 - Filter2)
- ;qadd8 r11, r11, r10 ; ps0 = vp8_signed_char_clamp(ps0 + u)
-
- ;end of modification for vp8
-
- bic r12, r7, r6 ; vp8_filter &= ~hev ( r6 is free)
- ;mov r12, r7
-
- ;roughly 3/7th difference across boundary
- mov lr, #0x1b ; 27
- mov r7, #0x3f ; 63
-
- sxtb16 r6, r12
- sxtb16 r10, r12, ror #8
- smlabb r8, r6, lr, r7
- smlatb r6, r6, lr, r7
- smlabb r7, r10, lr, r7
- smultb r10, r10, lr
- ssat r8, #8, r8, asr #7
- ssat r6, #8, r6, asr #7
- add r10, r10, #63
- ssat r7, #8, r7, asr #7
- ssat r10, #8, r10, asr #7
-
- ldr lr, c0x80808080
-
- pkhbt r6, r8, r6, lsl #16
- pkhbt r10, r7, r10, lsl #16
- uxtb16 r6, r6
- uxtb16 r10, r10
-
- sub src, src, pstep
-
- orr r10, r6, r10, lsl #8 ; u = vp8_signed_char_clamp((63 + Filter2 * 27)>>7)
-
- qsub8 r8, r9, r10 ; s = vp8_signed_char_clamp(qs0 - u)
- qadd8 r10, r11, r10 ; s = vp8_signed_char_clamp(ps0 + u)
- eor r8, r8, lr ; *oq0 = s^0x80
- str r8, [src] ; store *oq0
- sub src, src, pstep
- eor r10, r10, lr ; *op0 = s^0x80
- str r10, [src] ; store *op0
-
- ;roughly 2/7th difference across boundary
- mov lr, #0x12 ; 18
- mov r7, #0x3f ; 63
-
- sxtb16 r6, r12
- sxtb16 r10, r12, ror #8
- smlabb r8, r6, lr, r7
- smlatb r6, r6, lr, r7
- smlabb r9, r10, lr, r7
- smlatb r10, r10, lr, r7
- ssat r8, #8, r8, asr #7
- ssat r6, #8, r6, asr #7
- ssat r9, #8, r9, asr #7
- ssat r10, #8, r10, asr #7
-
- ldr lr, c0x80808080
-
- pkhbt r6, r8, r6, lsl #16
- pkhbt r10, r9, r10, lsl #16
-
- ldr r9, [sp, #8] ; load qs1
- ldr r11, [sp, #12] ; load ps1
-
- uxtb16 r6, r6
- uxtb16 r10, r10
-
- sub src, src, pstep
-
- orr r10, r6, r10, lsl #8 ; u = vp8_signed_char_clamp((63 + Filter2 * 18)>>7)
-
- qadd8 r11, r11, r10 ; s = vp8_signed_char_clamp(ps1 + u)
- qsub8 r8, r9, r10 ; s = vp8_signed_char_clamp(qs1 - u)
- eor r11, r11, lr ; *op1 = s^0x80
- str r11, [src], pstep ; store *op1
- eor r8, r8, lr ; *oq1 = s^0x80
- add src, src, pstep, lsl #1
-
- mov r7, #0x3f ; 63
-
- str r8, [src], pstep ; store *oq1
-
- ;roughly 1/7th difference across boundary
- mov lr, #0x9 ; 9
- ldr r9, [src] ; load q2
-
- sxtb16 r6, r12
- sxtb16 r10, r12, ror #8
- smlabb r8, r6, lr, r7
- smlatb r6, r6, lr, r7
- smlabb r12, r10, lr, r7
- smlatb r10, r10, lr, r7
- ssat r8, #8, r8, asr #7
- ssat r6, #8, r6, asr #7
- ssat r12, #8, r12, asr #7
- ssat r10, #8, r10, asr #7
-
- sub src, src, pstep, lsl #2
-
- pkhbt r6, r8, r6, lsl #16
- pkhbt r10, r12, r10, lsl #16
-
- sub src, src, pstep
- ldr lr, c0x80808080
-
- ldr r11, [src] ; load p2
-
- uxtb16 r6, r6
- uxtb16 r10, r10
-
- eor r9, r9, lr
- eor r11, r11, lr
-
- orr r10, r6, r10, lsl #8 ; u = vp8_signed_char_clamp((63 + Filter2 * 9)>>7)
-
- qadd8 r8, r11, r10 ; s = vp8_signed_char_clamp(ps2 + u)
- qsub8 r10, r9, r10 ; s = vp8_signed_char_clamp(qs2 - u)
- eor r8, r8, lr ; *op2 = s^0x80
- str r8, [src], pstep, lsl #2 ; store *op2
- add src, src, pstep
- eor r10, r10, lr ; *oq2 = s^0x80
- str r10, [src], pstep, lsl #1 ; store *oq2
-
-|mbhskip_filter|
- add src, src, #4
- sub src, src, pstep, lsl #3
- subs count, count, #1
-
- ldrne r9, [src], pstep ; p3
- ldrne r10, [src], pstep ; p2
- ldrne r11, [src], pstep ; p1
-
- bne MBHnext8
-
- add sp, sp, #16
- ldmia sp!, {r4 - r11, pc}
- ENDP ; |vp8_mbloop_filter_horizontal_edge_armv6|
-
-
-;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
-|vp8_loop_filter_vertical_edge_armv6| PROC
-;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
- stmdb sp!, {r4 - r11, lr}
-
- sub src, src, #4 ; move src pointer down by 4
- ldr count, [sp, #40] ; count for 8-in-parallel
- ldr r12, [sp, #36] ; load thresh address
- sub sp, sp, #16 ; create temp buffer
-
- ldr r6, [src], pstep ; load source data
- ldrb r4, [r2] ; blimit
- ldr r7, [src], pstep
- ldrb r2, [r3] ; limit
- ldr r8, [src], pstep
- orr r4, r4, r4, lsl #8
- ldrb r3, [r12] ; thresh
- orr r2, r2, r2, lsl #8
- ldr lr, [src], pstep
- mov count, count, lsl #1 ; 4-in-parallel
- orr r4, r4, r4, lsl #16
- orr r3, r3, r3, lsl #8
- orr r2, r2, r2, lsl #16
- orr r3, r3, r3, lsl #16
-
-|Vnext8|
-
- ; vp8_filter_mask() function
- ; calculate breakout conditions
- ; transpose the source data for 4-in-parallel operation
- TRANSPOSE_MATRIX r6, r7, r8, lr, r9, r10, r11, r12
-
- uqsub8 r7, r9, r10 ; p3 - p2
- uqsub8 r8, r10, r9 ; p2 - p3
- uqsub8 r9, r10, r11 ; p2 - p1
- uqsub8 r10, r11, r10 ; p1 - p2
- orr r7, r7, r8 ; abs (p3-p2)
- orr r10, r9, r10 ; abs (p2-p1)
- uqsub8 lr, r7, r2 ; compare to limit. lr: vp8_filter_mask
- uqsub8 r10, r10, r2 ; compare to limit
-
- sub src, src, pstep, lsl #2 ; move src pointer down by 4 lines
-
- orr lr, lr, r10
-
- uqsub8 r6, r11, r12 ; p1 - p0
- uqsub8 r7, r12, r11 ; p0 - p1
- add src, src, #4 ; move src pointer up by 4
- orr r6, r6, r7 ; abs (p1-p0)
- str r11, [sp, #12] ; save p1
- uqsub8 r10, r6, r2 ; compare to limit
- uqsub8 r11, r6, r3 ; compare to thresh
- orr lr, lr, r10
-
- ; transpose uses 8 regs(r6 - r12 and lr). Need to save reg value now
- ; transpose the source data for 4-in-parallel operation
- ldr r6, [src], pstep ; load source data
- str r11, [sp] ; push r11 to stack
- ldr r7, [src], pstep
- str r12, [sp, #4] ; save current reg before load q0 - q3 data
- ldr r8, [src], pstep
- str lr, [sp, #8]
- ldr lr, [src], pstep
-
- TRANSPOSE_MATRIX r6, r7, r8, lr, r9, r10, r11, r12
-
- ldr lr, [sp, #8] ; load back (f)limit accumulator
-
- uqsub8 r6, r12, r11 ; q3 - q2
- uqsub8 r7, r11, r12 ; q2 - q3
- uqsub8 r12, r11, r10 ; q2 - q1
- uqsub8 r11, r10, r11 ; q1 - q2
- orr r6, r6, r7 ; abs (q3-q2)
- orr r7, r12, r11 ; abs (q2-q1)
- uqsub8 r6, r6, r2 ; compare to limit
- uqsub8 r7, r7, r2 ; compare to limit
- ldr r11, [sp, #4] ; load back p0
- ldr r12, [sp, #12] ; load back p1
- orr lr, lr, r6
- orr lr, lr, r7
-
- uqsub8 r6, r11, r9 ; p0 - q0
- uqsub8 r7, r9, r11 ; q0 - p0
- uqsub8 r8, r12, r10 ; p1 - q1
- uqsub8 r11, r10, r12 ; q1 - p1
- orr r6, r6, r7 ; abs (p0-q0)
- ldr r7, c0x7F7F7F7F
- orr r8, r8, r11 ; abs (p1-q1)
- uqadd8 r6, r6, r6 ; abs (p0-q0) * 2
- and r8, r7, r8, lsr #1 ; abs (p1-q1) / 2
- uqsub8 r11, r10, r9 ; q1 - q0
- uqadd8 r6, r8, r6 ; abs (p0-q0)*2 + abs (p1-q1)/2
- uqsub8 r12, r9, r10 ; q0 - q1
- uqsub8 r6, r6, r4 ; compare to flimit
-
- orr r9, r11, r12 ; abs (q1-q0)
- uqsub8 r8, r9, r2 ; compare to limit
- uqsub8 r10, r9, r3 ; compare to thresh
- orr lr, lr, r6
- orr lr, lr, r8
-
- mvn r11, #0 ; r11 == -1
- mov r12, #0
-
- usub8 lr, r12, lr
- ldr r9, [sp] ; load the compared result
- sel lr, r11, r12 ; filter mask: lr
-
- cmp lr, #0
- beq vskip_filter ; skip filtering
-
- ;vp8_hevmask() function
- ;calculate high edge variance
-
- sub src, src, pstep, lsl #2 ; move src pointer down by 4 lines
-
- orr r9, r9, r10
-
- ldrh r7, [src, #-2]
- ldrh r8, [src], pstep
-
- usub8 r9, r12, r9
- sel r6, r12, r11 ; hev mask: r6
-
- ;vp8_filter() function
- ; load soure data to r6, r11, r12, lr
- ldrh r9, [src, #-2]
- ldrh r10, [src], pstep
-
- pkhbt r12, r7, r8, lsl #16
-
- ldrh r7, [src, #-2]
- ldrh r8, [src], pstep
-
- pkhbt r11, r9, r10, lsl #16
-
- ldrh r9, [src, #-2]
- ldrh r10, [src], pstep
-
- ; Transpose needs 8 regs(r6 - r12, and lr). Save r6 and lr first
- str r6, [sp]
- str lr, [sp, #4]
-
- pkhbt r6, r7, r8, lsl #16
- pkhbt lr, r9, r10, lsl #16
-
- ;transpose r12, r11, r6, lr to r7, r8, r9, r10
- TRANSPOSE_MATRIX r12, r11, r6, lr, r7, r8, r9, r10
-
- ;load back hev_mask r6 and filter_mask lr
- ldr r12, c0x80808080
- ldr r6, [sp]
- ldr lr, [sp, #4]
-
- eor r7, r7, r12 ; p1 offset to convert to a signed value
- eor r8, r8, r12 ; p0 offset to convert to a signed value
- eor r9, r9, r12 ; q0 offset to convert to a signed value
- eor r10, r10, r12 ; q1 offset to convert to a signed value
-
- str r9, [sp] ; store qs0 temporarily
- str r8, [sp, #4] ; store ps0 temporarily
- str r10, [sp, #8] ; store qs1 temporarily
- str r7, [sp, #12] ; store ps1 temporarily
-
- qsub8 r7, r7, r10 ; vp8_signed_char_clamp(ps1-qs1)
- qsub8 r8, r9, r8 ; vp8_signed_char_clamp(vp8_filter + 3 * ( qs0 - ps0))
-
- and r7, r7, r6 ; vp8_filter (r7) &= hev (r7 : filter)
-
- qadd8 r7, r7, r8
- ldr r9, c0x03030303 ; r9 = 3 --modified for vp8
-
- qadd8 r7, r7, r8
- ldr r10, c0x04040404
-
- qadd8 r7, r7, r8
- ;mvn r11, #0 ; r11 == -1
-
- and r7, r7, lr ; vp8_filter &= mask
-
- ;modify code for vp8 -- Filter1 = vp8_filter (r7)
- qadd8 r8 , r7 , r9 ; Filter2 (r8) = vp8_signed_char_clamp(vp8_filter+3)
- qadd8 r7 , r7 , r10 ; vp8_filter = vp8_signed_char_clamp(vp8_filter+4)
-
- mov r9, #0
- shadd8 r8 , r8 , r9 ; Filter2 >>= 3
- shadd8 r7 , r7 , r9 ; vp8_filter >>= 3
- shadd8 r8 , r8 , r9
- shadd8 r7 , r7 , r9
- shadd8 lr , r8 , r9 ; lr: filter2
- shadd8 r7 , r7 , r9 ; r7: filter
-
- ;usub8 lr, r8, r10 ; s = (s==4)*-1
- ;sel lr, r11, r9
- ;usub8 r8, r10, r8
- ;sel r8, r11, r9
- ;and r8, r8, lr ; -1 for each element that equals 4 -- r8: s
-
- ;calculate output
- ;qadd8 lr, r8, r7 ; u = vp8_signed_char_clamp(s + vp8_filter)
-
- ldr r8, [sp] ; load qs0
- ldr r9, [sp, #4] ; load ps0
-
- ldr r10, c0x01010101
-
- qsub8 r8, r8, r7 ; u = vp8_signed_char_clamp(qs0 - vp8_filter)
- qadd8 r9, r9, lr ; u = vp8_signed_char_clamp(ps0 + Filter2)
- ;end of modification for vp8
-
- eor r8, r8, r12
- eor r9, r9, r12
-
- mov lr, #0
-
- sadd8 r7, r7, r10
- shadd8 r7, r7, lr
-
- ldr r10, [sp, #8] ; load qs1
- ldr r11, [sp, #12] ; load ps1
-
- bic r7, r7, r6 ; r7: vp8_filter
-
- qsub8 r10 , r10, r7 ; u = vp8_signed_char_clamp(qs1 - vp8_filter)
- qadd8 r11, r11, r7 ; u = vp8_signed_char_clamp(ps1 + vp8_filter)
- eor r10, r10, r12
- eor r11, r11, r12
-
- sub src, src, pstep, lsl #2
-
- ;we can use TRANSPOSE_MATRIX macro to transpose output - input: q1, q0, p0, p1
- ;output is b0, b1, b2, b3
- ;b0: 03 02 01 00
- ;b1: 13 12 11 10
- ;b2: 23 22 21 20
- ;b3: 33 32 31 30
- ; p1 p0 q0 q1
- ; (a3 a2 a1 a0)
- TRANSPOSE_MATRIX r11, r9, r8, r10, r6, r7, r12, lr
-
- strh r6, [src, #-2] ; store the result
- mov r6, r6, lsr #16
- strh r6, [src], pstep
-
- strh r7, [src, #-2]
- mov r7, r7, lsr #16
- strh r7, [src], pstep
-
- strh r12, [src, #-2]
- mov r12, r12, lsr #16
- strh r12, [src], pstep
-
- strh lr, [src, #-2]
- mov lr, lr, lsr #16
- strh lr, [src], pstep
-
-|vskip_filter|
- sub src, src, #4
- subs count, count, #1
-
- ldrne r6, [src], pstep ; load source data
- ldrne r7, [src], pstep
- ldrne r8, [src], pstep
- ldrne lr, [src], pstep
-
- bne Vnext8
-
- add sp, sp, #16
-
- ldmia sp!, {r4 - r11, pc}
- ENDP ; |vp8_loop_filter_vertical_edge_armv6|
-
-
-
-;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
-|vp8_mbloop_filter_vertical_edge_armv6| PROC
-;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
- stmdb sp!, {r4 - r11, lr}
-
- sub src, src, #4 ; move src pointer down by 4
- ldr count, [sp, #40] ; count for 8-in-parallel
- ldr r12, [sp, #36] ; load thresh address
- pld [src, #23] ; preload for next block
- sub sp, sp, #16 ; create temp buffer
-
- ldr r6, [src], pstep ; load source data
- ldrb r4, [r2] ; blimit
- pld [src, #23]
- ldr r7, [src], pstep
- ldrb r2, [r3] ; limit
- pld [src, #23]
- ldr r8, [src], pstep
- orr r4, r4, r4, lsl #8
- ldrb r3, [r12] ; thresh
- orr r2, r2, r2, lsl #8
- pld [src, #23]
- ldr lr, [src], pstep
- mov count, count, lsl #1 ; 4-in-parallel
- orr r4, r4, r4, lsl #16
- orr r3, r3, r3, lsl #8
- orr r2, r2, r2, lsl #16
- orr r3, r3, r3, lsl #16
-
-|MBVnext8|
- ; vp8_filter_mask() function
- ; calculate breakout conditions
- ; transpose the source data for 4-in-parallel operation
- TRANSPOSE_MATRIX r6, r7, r8, lr, r9, r10, r11, r12
-
- uqsub8 r7, r9, r10 ; p3 - p2
- uqsub8 r8, r10, r9 ; p2 - p3
- uqsub8 r9, r10, r11 ; p2 - p1
- uqsub8 r10, r11, r10 ; p1 - p2
- orr r7, r7, r8 ; abs (p3-p2)
- orr r10, r9, r10 ; abs (p2-p1)
- uqsub8 lr, r7, r2 ; compare to limit. lr: vp8_filter_mask
- uqsub8 r10, r10, r2 ; compare to limit
-
- sub src, src, pstep, lsl #2 ; move src pointer down by 4 lines
-
- orr lr, lr, r10
-
- uqsub8 r6, r11, r12 ; p1 - p0
- uqsub8 r7, r12, r11 ; p0 - p1
- add src, src, #4 ; move src pointer up by 4
- orr r6, r6, r7 ; abs (p1-p0)
- str r11, [sp, #12] ; save p1
- uqsub8 r10, r6, r2 ; compare to limit
- uqsub8 r11, r6, r3 ; compare to thresh
- orr lr, lr, r10
-
- ; transpose uses 8 regs(r6 - r12 and lr). Need to save reg value now
- ; transpose the source data for 4-in-parallel operation
- ldr r6, [src], pstep ; load source data
- str r11, [sp] ; push r11 to stack
- ldr r7, [src], pstep
- str r12, [sp, #4] ; save current reg before load q0 - q3 data
- ldr r8, [src], pstep
- str lr, [sp, #8]
- ldr lr, [src], pstep
-
-
- TRANSPOSE_MATRIX r6, r7, r8, lr, r9, r10, r11, r12
-
- ldr lr, [sp, #8] ; load back (f)limit accumulator
-
- uqsub8 r6, r12, r11 ; q3 - q2
- uqsub8 r7, r11, r12 ; q2 - q3
- uqsub8 r12, r11, r10 ; q2 - q1
- uqsub8 r11, r10, r11 ; q1 - q2
- orr r6, r6, r7 ; abs (q3-q2)
- orr r7, r12, r11 ; abs (q2-q1)
- uqsub8 r6, r6, r2 ; compare to limit
- uqsub8 r7, r7, r2 ; compare to limit
- ldr r11, [sp, #4] ; load back p0
- ldr r12, [sp, #12] ; load back p1
- orr lr, lr, r6
- orr lr, lr, r7
-
- uqsub8 r6, r11, r9 ; p0 - q0
- uqsub8 r7, r9, r11 ; q0 - p0
- uqsub8 r8, r12, r10 ; p1 - q1
- uqsub8 r11, r10, r12 ; q1 - p1
- orr r6, r6, r7 ; abs (p0-q0)
- ldr r7, c0x7F7F7F7F
- orr r8, r8, r11 ; abs (p1-q1)
- uqadd8 r6, r6, r6 ; abs (p0-q0) * 2
- and r8, r7, r8, lsr #1 ; abs (p1-q1) / 2
- uqsub8 r11, r10, r9 ; q1 - q0
- uqadd8 r6, r8, r6 ; abs (p0-q0)*2 + abs (p1-q1)/2
- uqsub8 r12, r9, r10 ; q0 - q1
- uqsub8 r6, r6, r4 ; compare to flimit
-
- orr r9, r11, r12 ; abs (q1-q0)
- uqsub8 r8, r9, r2 ; compare to limit
- uqsub8 r10, r9, r3 ; compare to thresh
- orr lr, lr, r6
- orr lr, lr, r8
-
- mvn r11, #0 ; r11 == -1
- mov r12, #0
-
- usub8 lr, r12, lr
- ldr r9, [sp] ; load the compared result
- sel lr, r11, r12 ; filter mask: lr
-
- cmp lr, #0
- beq mbvskip_filter ; skip filtering
-
-
-
- ;vp8_hevmask() function
- ;calculate high edge variance
-
- sub src, src, pstep, lsl #2 ; move src pointer down by 4 lines
-
- orr r9, r9, r10
-
- ldrh r7, [src, #-2]
- ldrh r8, [src], pstep
-
- usub8 r9, r12, r9
- sel r6, r12, r11 ; hev mask: r6
-
-
- ; vp8_mbfilter() function
- ; p2, q2 are only needed at the end. Don't need to load them in now.
- ; Transpose needs 8 regs(r6 - r12, and lr). Save r6 and lr first
- ; load soure data to r6, r11, r12, lr
- ldrh r9, [src, #-2]
- ldrh r10, [src], pstep
-
- pkhbt r12, r7, r8, lsl #16
-
- ldrh r7, [src, #-2]
- ldrh r8, [src], pstep
-
- pkhbt r11, r9, r10, lsl #16
-
- ldrh r9, [src, #-2]
- ldrh r10, [src], pstep
-
- str r6, [sp] ; save r6
- str lr, [sp, #4] ; save lr
-
- pkhbt r6, r7, r8, lsl #16
- pkhbt lr, r9, r10, lsl #16
-
- ;transpose r12, r11, r6, lr to p1, p0, q0, q1
- TRANSPOSE_MATRIX r12, r11, r6, lr, r7, r8, r9, r10
-
- ;load back hev_mask r6 and filter_mask lr
- ldr r12, c0x80808080
- ldr r6, [sp]
- ldr lr, [sp, #4]
-
- eor r7, r7, r12 ; ps1
- eor r8, r8, r12 ; ps0
- eor r9, r9, r12 ; qs0
- eor r10, r10, r12 ; qs1
-
- qsub8 r12, r9, r8 ; vp8_signed_char_clamp(vp8_filter + 3 * ( qs0 - ps0))
- str r7, [sp, #12] ; store ps1 temporarily
- qsub8 r7, r7, r10 ; vp8_signed_char_clamp(ps1-qs1)
- str r10, [sp, #8] ; store qs1 temporarily
- qadd8 r7, r7, r12
- str r9, [sp] ; store qs0 temporarily
- qadd8 r7, r7, r12
- str r8, [sp, #4] ; store ps0 temporarily
- qadd8 r7, r7, r12 ; vp8_filter: r7
-
- ldr r10, c0x03030303 ; r10 = 3 --modified for vp8
- ldr r9, c0x04040404
- ;mvn r11, #0 ; r11 == -1
-
- and r7, r7, lr ; vp8_filter &= mask (lr is free)
-
- mov r12, r7 ; Filter2: r12
- and r12, r12, r6 ; Filter2 &= hev
-
- ;modify code for vp8
- ;save bottom 3 bits so that we round one side +4 and the other +3
- qadd8 r8 , r12 , r9 ; Filter1 (r8) = vp8_signed_char_clamp(Filter2+4)
- qadd8 r12 , r12 , r10 ; Filter2 (r12) = vp8_signed_char_clamp(Filter2+3)
-
- mov r10, #0
- shadd8 r8 , r8 , r10 ; Filter1 >>= 3
- shadd8 r12 , r12 , r10 ; Filter2 >>= 3
- shadd8 r8 , r8 , r10
- shadd8 r12 , r12 , r10
- shadd8 r8 , r8 , r10 ; r8: Filter1
- shadd8 r12 , r12 , r10 ; r12: Filter2
-
- ldr r9, [sp] ; load qs0
- ldr r11, [sp, #4] ; load ps0
-
- qsub8 r9 , r9, r8 ; qs0 = vp8_signed_char_clamp(qs0 - Filter1)
- qadd8 r11, r11, r12 ; ps0 = vp8_signed_char_clamp(ps0 + Filter2)
-
- ;save bottom 3 bits so that we round one side +4 and the other +3
- ;and r8, r12, r10 ; s = Filter2 & 7 (s: r8)
- ;qadd8 r12 , r12 , r9 ; Filter2 = vp8_signed_char_clamp(Filter2+4)
- ;mov r10, #0
- ;shadd8 r12 , r12 , r10 ; Filter2 >>= 3
- ;usub8 lr, r8, r9 ; s = (s==4)*-1
- ;sel lr, r11, r10
- ;shadd8 r12 , r12 , r10
- ;usub8 r8, r9, r8
- ;sel r8, r11, r10
- ;ldr r9, [sp] ; load qs0
- ;ldr r11, [sp, #4] ; load ps0
- ;shadd8 r12 , r12 , r10
- ;and r8, r8, lr ; -1 for each element that equals 4
- ;qadd8 r10, r8, r12 ; u = vp8_signed_char_clamp(s + Filter2)
- ;qsub8 r9 , r9, r12 ; qs0 = vp8_signed_char_clamp(qs0 - Filter2)
- ;qadd8 r11, r11, r10 ; ps0 = vp8_signed_char_clamp(ps0 + u)
-
- ;end of modification for vp8
-
- bic r12, r7, r6 ;vp8_filter &= ~hev ( r6 is free)
- ;mov r12, r7
-
- ;roughly 3/7th difference across boundary
- mov lr, #0x1b ; 27
- mov r7, #0x3f ; 63
-
- sxtb16 r6, r12
- sxtb16 r10, r12, ror #8
- smlabb r8, r6, lr, r7
- smlatb r6, r6, lr, r7
- smlabb r7, r10, lr, r7
- smultb r10, r10, lr
- ssat r8, #8, r8, asr #7
- ssat r6, #8, r6, asr #7
- add r10, r10, #63
- ssat r7, #8, r7, asr #7
- ssat r10, #8, r10, asr #7
-
- ldr lr, c0x80808080
-
- pkhbt r6, r8, r6, lsl #16
- pkhbt r10, r7, r10, lsl #16
- uxtb16 r6, r6
- uxtb16 r10, r10
-
- sub src, src, pstep, lsl #2 ; move src pointer down by 4 lines
-
- orr r10, r6, r10, lsl #8 ; u = vp8_signed_char_clamp((63 + Filter2 * 27)>>7)
-
- qsub8 r8, r9, r10 ; s = vp8_signed_char_clamp(qs0 - u)
- qadd8 r10, r11, r10 ; s = vp8_signed_char_clamp(ps0 + u)
- eor r8, r8, lr ; *oq0 = s^0x80
- eor r10, r10, lr ; *op0 = s^0x80
-
- strb r10, [src, #-1] ; store op0 result
- strb r8, [src], pstep ; store oq0 result
- mov r10, r10, lsr #8
- mov r8, r8, lsr #8
- strb r10, [src, #-1]
- strb r8, [src], pstep
- mov r10, r10, lsr #8
- mov r8, r8, lsr #8
- strb r10, [src, #-1]
- strb r8, [src], pstep
- mov r10, r10, lsr #8
- mov r8, r8, lsr #8
- strb r10, [src, #-1]
- strb r8, [src], pstep
-
- ;roughly 2/7th difference across boundary
- mov lr, #0x12 ; 18
- mov r7, #0x3f ; 63
-
- sxtb16 r6, r12
- sxtb16 r10, r12, ror #8
- smlabb r8, r6, lr, r7
- smlatb r6, r6, lr, r7
- smlabb r9, r10, lr, r7
-
- smlatb r10, r10, lr, r7
- ssat r8, #8, r8, asr #7
- ssat r6, #8, r6, asr #7
- ssat r9, #8, r9, asr #7
- ssat r10, #8, r10, asr #7
-
- sub src, src, pstep, lsl #2 ; move src pointer down by 4 lines
-
- pkhbt r6, r8, r6, lsl #16
- pkhbt r10, r9, r10, lsl #16
-
- ldr r9, [sp, #8] ; load qs1
- ldr r11, [sp, #12] ; load ps1
- ldr lr, c0x80808080
-
- uxtb16 r6, r6
- uxtb16 r10, r10
-
- add src, src, #2
-
- orr r10, r6, r10, lsl #8 ; u = vp8_signed_char_clamp((63 + Filter2 * 18)>>7)
-
- qsub8 r8, r9, r10 ; s = vp8_signed_char_clamp(qs1 - u)
- qadd8 r10, r11, r10 ; s = vp8_signed_char_clamp(ps1 + u)
- eor r8, r8, lr ; *oq1 = s^0x80
- eor r10, r10, lr ; *op1 = s^0x80
-
- ldrb r11, [src, #-5] ; load p2 for 1/7th difference across boundary
- strb r10, [src, #-4] ; store op1
- strb r8, [src, #-1] ; store oq1
- ldrb r9, [src], pstep ; load q2 for 1/7th difference across boundary
-
- mov r10, r10, lsr #8
- mov r8, r8, lsr #8
-
- ldrb r6, [src, #-5]
- strb r10, [src, #-4]
- strb r8, [src, #-1]
- ldrb r7, [src], pstep
-
- mov r10, r10, lsr #8
- mov r8, r8, lsr #8
- orr r11, r11, r6, lsl #8
- orr r9, r9, r7, lsl #8
-
- ldrb r6, [src, #-5]
- strb r10, [src, #-4]
- strb r8, [src, #-1]
- ldrb r7, [src], pstep
-
- mov r10, r10, lsr #8
- mov r8, r8, lsr #8
- orr r11, r11, r6, lsl #16
- orr r9, r9, r7, lsl #16
-
- ldrb r6, [src, #-5]
- strb r10, [src, #-4]
- strb r8, [src, #-1]
- ldrb r7, [src], pstep
- orr r11, r11, r6, lsl #24
- orr r9, r9, r7, lsl #24
-
- ;roughly 1/7th difference across boundary
- eor r9, r9, lr
- eor r11, r11, lr
-
- mov lr, #0x9 ; 9
- mov r7, #0x3f ; 63
-
- sxtb16 r6, r12
- sxtb16 r10, r12, ror #8
- smlabb r8, r6, lr, r7
- smlatb r6, r6, lr, r7
- smlabb r12, r10, lr, r7
- smlatb r10, r10, lr, r7
- ssat r8, #8, r8, asr #7
- ssat r6, #8, r6, asr #7
- ssat r12, #8, r12, asr #7
- ssat r10, #8, r10, asr #7
-
- sub src, src, pstep, lsl #2
-
- pkhbt r6, r8, r6, lsl #16
- pkhbt r10, r12, r10, lsl #16
-
- uxtb16 r6, r6
- uxtb16 r10, r10
-
- ldr lr, c0x80808080
-
- orr r10, r6, r10, lsl #8 ; u = vp8_signed_char_clamp((63 + Filter2 * 9)>>7)
-
- qadd8 r8, r11, r10 ; s = vp8_signed_char_clamp(ps2 + u)
- qsub8 r10, r9, r10 ; s = vp8_signed_char_clamp(qs2 - u)
- eor r8, r8, lr ; *op2 = s^0x80
- eor r10, r10, lr ; *oq2 = s^0x80
-
- strb r8, [src, #-5] ; store *op2
- strb r10, [src], pstep ; store *oq2
- mov r8, r8, lsr #8
- mov r10, r10, lsr #8
- strb r8, [src, #-5]
- strb r10, [src], pstep
- mov r8, r8, lsr #8
- mov r10, r10, lsr #8
- strb r8, [src, #-5]
- strb r10, [src], pstep
- mov r8, r8, lsr #8
- mov r10, r10, lsr #8
- strb r8, [src, #-5]
- strb r10, [src], pstep
-
- ;adjust src pointer for next loop
- sub src, src, #2
-
-|mbvskip_filter|
- sub src, src, #4
- subs count, count, #1
-
- pld [src, #23] ; preload for next block
- ldrne r6, [src], pstep ; load source data
- pld [src, #23]
- ldrne r7, [src], pstep
- pld [src, #23]
- ldrne r8, [src], pstep
- pld [src, #23]
- ldrne lr, [src], pstep
-
- bne MBVnext8
-
- add sp, sp, #16
-
- ldmia sp!, {r4 - r11, pc}
- ENDP ; |vp8_mbloop_filter_vertical_edge_armv6|
-
-; Constant Pool
-c0x80808080 DCD 0x80808080
-c0x03030303 DCD 0x03030303
-c0x04040404 DCD 0x04040404
-c0x01010101 DCD 0x01010101
-c0x7F7F7F7F DCD 0x7F7F7F7F
-
- END
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