+++ /dev/null
-;
-; 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_intra4x4_predict_armv6|
-
- ARM
- REQUIRE8
- PRESERVE8
-
- AREA ||.text||, CODE, READONLY, ALIGN=2
-
-
-;void vp8_intra4x4_predict_armv6(unsigned char *Above, unsigned char *yleft,
-; B_PREDICTION_MODE left_stride, int b_mode,
-; unsigned char *dst, int dst_stride,
-; unsigned char top_left)
-
-; r0: *Above
-; r1: *yleft
-; r2: left_stride
-; r3: b_mode
-; sp + #40: dst
-; sp + #44: dst_stride
-; sp + #48: top_left
-|vp8_intra4x4_predict_armv6| PROC
- push {r4-r12, lr}
-
- cmp r3, #10
- addlt pc, pc, r3, lsl #2 ; position independent switch
- pop {r4-r12, pc} ; default
- b b_dc_pred
- b b_tm_pred
- b b_ve_pred
- b b_he_pred
- b b_ld_pred
- b b_rd_pred
- b b_vr_pred
- b b_vl_pred
- b b_hd_pred
- b b_hu_pred
-
-b_dc_pred
- ; load values
- ldr r8, [r0] ; Above
- ldrb r4, [r1], r2 ; Left[0]
- mov r9, #0
- ldrb r5, [r1], r2 ; Left[1]
- ldrb r6, [r1], r2 ; Left[2]
- usad8 r12, r8, r9
- ldrb r7, [r1] ; Left[3]
-
- ; calculate dc
- add r4, r4, r5
- add r4, r4, r6
- add r4, r4, r7
- add r4, r4, r12
- add r4, r4, #4
- ldr r0, [sp, #44] ; dst_stride
- mov r12, r4, asr #3 ; (expected_dc + 4) >> 3
-
- add r12, r12, r12, lsl #8
- ldr r3, [sp, #40] ; dst
- add r12, r12, r12, lsl #16
-
- ; store values
- str r12, [r3], r0
- str r12, [r3], r0
- str r12, [r3], r0
- str r12, [r3]
-
- pop {r4-r12, pc}
-
-b_tm_pred
- ldr r8, [r0] ; Above
- ldrb r9, [sp, #48] ; top_left
- ldrb r4, [r1], r2 ; Left[0]
- ldrb r5, [r1], r2 ; Left[1]
- ldrb r6, [r1], r2 ; Left[2]
- ldrb r7, [r1] ; Left[3]
- ldr r0, [sp, #44] ; dst_stride
- ldr r3, [sp, #40] ; dst
-
- add r9, r9, r9, lsl #16 ; [tl|tl]
- uxtb16 r10, r8 ; a[2|0]
- uxtb16 r11, r8, ror #8 ; a[3|1]
- ssub16 r10, r10, r9 ; a[2|0] - [tl|tl]
- ssub16 r11, r11, r9 ; a[3|1] - [tl|tl]
-
- add r4, r4, r4, lsl #16 ; l[0|0]
- add r5, r5, r5, lsl #16 ; l[1|1]
- add r6, r6, r6, lsl #16 ; l[2|2]
- add r7, r7, r7, lsl #16 ; l[3|3]
-
- sadd16 r1, r4, r10 ; l[0|0] + a[2|0] - [tl|tl]
- sadd16 r2, r4, r11 ; l[0|0] + a[3|1] - [tl|tl]
- usat16 r1, #8, r1
- usat16 r2, #8, r2
-
- sadd16 r4, r5, r10 ; l[1|1] + a[2|0] - [tl|tl]
- sadd16 r5, r5, r11 ; l[1|1] + a[3|1] - [tl|tl]
-
- add r12, r1, r2, lsl #8 ; [3|2|1|0]
- str r12, [r3], r0
-
- usat16 r4, #8, r4
- usat16 r5, #8, r5
-
- sadd16 r1, r6, r10 ; l[2|2] + a[2|0] - [tl|tl]
- sadd16 r2, r6, r11 ; l[2|2] + a[3|1] - [tl|tl]
-
- add r12, r4, r5, lsl #8 ; [3|2|1|0]
- str r12, [r3], r0
-
- usat16 r1, #8, r1
- usat16 r2, #8, r2
-
- sadd16 r4, r7, r10 ; l[3|3] + a[2|0] - [tl|tl]
- sadd16 r5, r7, r11 ; l[3|3] + a[3|1] - [tl|tl]
-
- add r12, r1, r2, lsl #8 ; [3|2|1|0]
-
- usat16 r4, #8, r4
- usat16 r5, #8, r5
-
- str r12, [r3], r0
-
- add r12, r4, r5, lsl #8 ; [3|2|1|0]
- str r12, [r3]
-
- pop {r4-r12, pc}
-
-b_ve_pred
- ldr r8, [r0] ; a[3|2|1|0]
- ldr r11, c00FF00FF
- ldrb r9, [sp, #48] ; top_left
- ldrb r10, [r0, #4] ; a[4]
-
- ldr r0, c00020002
-
- uxtb16 r4, r8 ; a[2|0]
- uxtb16 r5, r8, ror #8 ; a[3|1]
- ldr r2, [sp, #44] ; dst_stride
- pkhbt r9, r9, r5, lsl #16 ; a[1|-1]
-
- add r9, r9, r4, lsl #1 ;[a[1]+2*a[2] | tl+2*a[0] ]
- uxtab16 r9, r9, r5 ;[a[1]+2*a[2]+a[3] | tl+2*a[0]+a[1] ]
- ldr r3, [sp, #40] ; dst
- uxtab16 r9, r9, r0 ;[a[1]+2*a[2]+a[3]+2| tl+2*a[0]+a[1]+2]
-
- add r0, r0, r10, lsl #16 ;[a[4]+2 | 2]
- add r0, r0, r4, asr #16 ;[a[4]+2 | a[2]+2]
- add r0, r0, r5, lsl #1 ;[a[4]+2*a[3]+2 | a[2]+2*a[1]+2]
- uadd16 r4, r4, r0 ;[a[4]+2*a[3]+a[2]+2|a[2]+2*a[1]+a[0]+2]
-
- and r9, r11, r9, asr #2
- and r4, r11, r4, asr #2
- add r9, r9, r4, lsl #8
-
- ; store values
- str r9, [r3], r2
- str r9, [r3], r2
- str r9, [r3], r2
- str r9, [r3]
-
- pop {r4-r12, pc}
-
-
-b_he_pred
- ldrb r4, [r1], r2 ; Left[0]
- ldrb r8, [sp, #48] ; top_left
- ldrb r5, [r1], r2 ; Left[1]
- ldrb r6, [r1], r2 ; Left[2]
- ldrb r7, [r1] ; Left[3]
-
- add r8, r8, r4 ; tl + l[0]
- add r9, r4, r5 ; l[0] + l[1]
- add r10, r5, r6 ; l[1] + l[2]
- add r11, r6, r7 ; l[2] + l[3]
-
- mov r0, #2<<14
-
- add r8, r8, r9 ; tl + 2*l[0] + l[1]
- add r4, r9, r10 ; l[0] + 2*l[1] + l[2]
- add r5, r10, r11 ; l[1] + 2*l[2] + l[3]
- add r6, r11, r7, lsl #1 ; l[2] + 2*l[3] + l[3]
-
-
- add r8, r0, r8, lsl #14 ; (tl + 2*l[0] + l[1])>>2 in top half
- add r9, r0, r4, lsl #14 ; (l[0] + 2*l[1] + l[2])>>2 in top half
- add r10,r0, r5, lsl #14 ; (l[1] + 2*l[2] + l[3])>>2 in top half
- add r11,r0, r6, lsl #14 ; (l[2] + 2*l[3] + l[3])>>2 in top half
-
- pkhtb r8, r8, r8, asr #16 ; l[-|0|-|0]
- pkhtb r9, r9, r9, asr #16 ; l[-|1|-|1]
- pkhtb r10, r10, r10, asr #16 ; l[-|2|-|2]
- pkhtb r11, r11, r11, asr #16 ; l[-|3|-|3]
-
- ldr r0, [sp, #44] ; dst_stride
- ldr r3, [sp, #40] ; dst
-
- add r8, r8, r8, lsl #8 ; l[0|0|0|0]
- add r9, r9, r9, lsl #8 ; l[1|1|1|1]
- add r10, r10, r10, lsl #8 ; l[2|2|2|2]
- add r11, r11, r11, lsl #8 ; l[3|3|3|3]
-
- ; store values
- str r8, [r3], r0
- str r9, [r3], r0
- str r10, [r3], r0
- str r11, [r3]
-
- pop {r4-r12, pc}
-
-b_ld_pred
- ldr r4, [r0] ; Above[0-3]
- ldr r12, c00020002
- ldr r5, [r0, #4] ; Above[4-7]
- ldr lr, c00FF00FF
-
- uxtb16 r6, r4 ; a[2|0]
- uxtb16 r7, r4, ror #8 ; a[3|1]
- uxtb16 r8, r5 ; a[6|4]
- uxtb16 r9, r5, ror #8 ; a[7|5]
- pkhtb r10, r6, r8 ; a[2|4]
- pkhtb r11, r7, r9 ; a[3|5]
-
- add r4, r6, r7, lsl #1 ; [a2+2*a3 | a0+2*a1]
- add r4, r4, r10, ror #16 ; [a2+2*a3+a4 | a0+2*a1+a2]
- uxtab16 r4, r4, r12 ; [a2+2*a3+a4+2 | a0+2*a1+a2+2]
-
- add r5, r7, r10, ror #15 ; [a3+2*a4 | a1+2*a2]
- add r5, r5, r11, ror #16 ; [a3+2*a4+a5 | a1+2*a2+a3]
- uxtab16 r5, r5, r12 ; [a3+2*a4+a5+2 | a1+2*a2+a3+2]
-
- pkhtb r7, r9, r8, asr #16
- add r6, r8, r9, lsl #1 ; [a6+2*a7 | a4+2*a5]
- uadd16 r6, r6, r7 ; [a6+2*a7+a7 | a4+2*a5+a6]
- uxtab16 r6, r6, r12 ; [a6+2*a7+a7+2 | a4+2*a5+a6+2]
-
- uxth r7, r9 ; [ a5]
- add r7, r7, r8, asr #15 ; [ a5+2*a6]
- add r7, r7, r9, asr #16 ; [ a5+2*a6+a7]
- uxtah r7, r7, r12 ; [ a5+2*a6+a7+2]
-
- ldr r0, [sp, #44] ; dst_stride
- ldr r3, [sp, #40] ; dst
-
- ; scale down
- and r4, lr, r4, asr #2
- and r5, lr, r5, asr #2
- and r6, lr, r6, asr #2
- mov r7, r7, asr #2
-
- add r8, r4, r5, lsl #8 ; [3|2|1|0]
- str r8, [r3], r0
-
- mov r9, r8, lsr #8
- add r9, r9, r6, lsl #24 ; [4|3|2|1]
- str r9, [r3], r0
-
- mov r10, r9, lsr #8
- add r10, r10, r7, lsl #24 ; [5|4|3|2]
- str r10, [r3], r0
-
- mov r6, r6, lsr #16
- mov r11, r10, lsr #8
- add r11, r11, r6, lsl #24 ; [6|5|4|3]
- str r11, [r3]
-
- pop {r4-r12, pc}
-
-b_rd_pred
- ldrb r7, [r1], r2 ; l[0] = pp[3]
- ldr lr, [r0] ; Above = pp[8|7|6|5]
- ldrb r8, [sp, #48] ; tl = pp[4]
- ldrb r6, [r1], r2 ; l[1] = pp[2]
- ldrb r5, [r1], r2 ; l[2] = pp[1]
- ldrb r4, [r1], r2 ; l[3] = pp[0]
-
-
- uxtb16 r9, lr ; p[7|5]
- uxtb16 r10, lr, ror #8 ; p[8|6]
- add r4, r4, r6, lsl #16 ; p[2|0]
- add r5, r5, r7, lsl #16 ; p[3|1]
- add r6, r6, r8, lsl #16 ; p[4|2]
- pkhbt r7, r7, r9, lsl #16 ; p[5|3]
- pkhbt r8, r8, r10, lsl #16 ; p[6|4]
-
- ldr r12, c00020002
- ldr lr, c00FF00FF
-
- add r4, r4, r5, lsl #1 ; [p2+2*p3 | p0+2*p1]
- add r4, r4, r6 ; [p2+2*p3+p4 | p0+2*p1+p2]
- uxtab16 r4, r4, r12 ; [p2+2*p3+p4+2 | p0+2*p1+p2+2]
-
- add r5, r5, r6, lsl #1 ; [p3+2*p4 | p1+2*p2]
- add r5, r5, r7 ; [p3+2*p4+p5 | p1+2*p2+p3]
- uxtab16 r5, r5, r12 ; [p3+2*p4+p5+2 | p1+2*p2+p3+2]
-
- add r6, r7, r8, lsl #1 ; [p5+2*p6 | p3+2*p4]
- add r6, r6, r9 ; [p5+2*p6+p7 | p3+2*p4+p5]
- uxtab16 r6, r6, r12 ; [p5+2*p6+p7+2 | p3+2*p4+p5+2]
-
- add r7, r8, r9, lsl #1 ; [p6+2*p7 | p4+2*p5]
- add r7, r7, r10 ; [p6+2*p7+p8 | p4+2*p5+p6]
- uxtab16 r7, r7, r12 ; [p6+2*p7+p8+2 | p4+2*p5+p6+2]
-
- ldr r0, [sp, #44] ; dst_stride
- ldr r3, [sp, #40] ; dst
-
- ; scale down
- and r7, lr, r7, asr #2
- and r6, lr, r6, asr #2
- and r5, lr, r5, asr #2
- and r4, lr, r4, asr #2
-
- add r8, r6, r7, lsl #8 ; [6|5|4|3]
- str r8, [r3], r0
-
- mov r9, r8, lsl #8 ; [5|4|3|-]
- uxtab r9, r9, r4, ror #16 ; [5|4|3|2]
- str r9, [r3], r0
-
- mov r10, r9, lsl #8 ; [4|3|2|-]
- uxtab r10, r10, r5 ; [4|3|2|1]
- str r10, [r3], r0
-
- mov r11, r10, lsl #8 ; [3|2|1|-]
- uxtab r11, r11, r4 ; [3|2|1|0]
- str r11, [r3]
-
- pop {r4-r12, pc}
-
-b_vr_pred
- ldrb r7, [r1], r2 ; l[0] = pp[3]
- ldr lr, [r0] ; Above = pp[8|7|6|5]
- ldrb r8, [sp, #48] ; tl = pp[4]
- ldrb r6, [r1], r2 ; l[1] = pp[2]
- ldrb r5, [r1], r2 ; l[2] = pp[1]
- ldrb r4, [r1] ; l[3] = pp[0]
-
- add r5, r5, r7, lsl #16 ; p[3|1]
- add r6, r6, r8, lsl #16 ; p[4|2]
- uxtb16 r9, lr ; p[7|5]
- uxtb16 r10, lr, ror #8 ; p[8|6]
- pkhbt r7, r7, r9, lsl #16 ; p[5|3]
- pkhbt r8, r8, r10, lsl #16 ; p[6|4]
-
- ldr r4, c00010001
- ldr r12, c00020002
- ldr lr, c00FF00FF
-
- add r5, r5, r6, lsl #1 ; [p3+2*p4 | p1+2*p2]
- add r5, r5, r7 ; [p3+2*p4+p5 | p1+2*p2+p3]
- uxtab16 r5, r5, r12 ; [p3+2*p4+p5+2 | p1+2*p2+p3+2]
-
- add r6, r6, r7, lsl #1 ; [p4+2*p5 | p2+2*p3]
- add r6, r6, r8 ; [p4+2*p5+p6 | p2+2*p3+p4]
- uxtab16 r6, r6, r12 ; [p4+2*p5+p6+2 | p2+2*p3+p4+2]
-
- uadd16 r11, r8, r9 ; [p6+p7 | p4+p5]
- uhadd16 r11, r11, r4 ; [(p6+p7+1)>>1 | (p4+p5+1)>>1]
- ; [F|E]
-
- add r7, r7, r8, lsl #1 ; [p5+2*p6 | p3+2*p4]
- add r7, r7, r9 ; [p5+2*p6+p7 | p3+2*p4+p5]
- uxtab16 r7, r7, r12 ; [p5+2*p6+p7+2 | p3+2*p4+p5+2]
-
- uadd16 r2, r9, r10 ; [p7+p8 | p5+p6]
- uhadd16 r2, r2, r4 ; [(p7+p8+1)>>1 | (p5+p6+1)>>1]
- ; [J|I]
-
- add r8, r8, r9, lsl #1 ; [p6+2*p7 | p4+2*p5]
- add r8, r8, r10 ; [p6+2*p7+p8 | p4+2*p5+p6]
- uxtab16 r8, r8, r12 ; [p6+2*p7+p8+2 | p4+2*p5+p6+2]
-
- ldr r0, [sp, #44] ; dst_stride
- ldr r3, [sp, #40] ; dst
-
- ; scale down
- and r5, lr, r5, asr #2 ; [B|A]
- and r6, lr, r6, asr #2 ; [D|C]
- and r7, lr, r7, asr #2 ; [H|G]
- and r8, lr, r8, asr #2 ; [L|K]
-
- add r12, r11, r2, lsl #8 ; [J|F|I|E]
- str r12, [r3], r0
-
- add r12, r7, r8, lsl #8 ; [L|H|K|G]
- str r12, [r3], r0
-
- pkhbt r2, r6, r2, lsl #16 ; [-|I|-|C]
- add r2, r2, r11, lsl #8 ; [F|I|E|C]
-
- pkhtb r12, r6, r5 ; [-|D|-|A]
- pkhtb r10, r7, r5, asr #16 ; [-|H|-|B]
- str r2, [r3], r0
- add r12, r12, r10, lsl #8 ; [H|D|B|A]
- str r12, [r3]
-
- pop {r4-r12, pc}
-
-b_vl_pred
- ldr r4, [r0] ; [3|2|1|0] = Above[0-3]
- ldr r12, c00020002
- ldr r5, [r0, #4] ; [7|6|5|4] = Above[4-7]
- ldr lr, c00FF00FF
- ldr r2, c00010001
-
- mov r0, r4, lsr #16 ; [-|-|3|2]
- add r0, r0, r5, lsl #16 ; [5|4|3|2]
- uxtb16 r6, r4 ; [2|0]
- uxtb16 r7, r4, ror #8 ; [3|1]
- uxtb16 r8, r0 ; [4|2]
- uxtb16 r9, r0, ror #8 ; [5|3]
- uxtb16 r10, r5 ; [6|4]
- uxtb16 r11, r5, ror #8 ; [7|5]
-
- uadd16 r4, r6, r7 ; [p2+p3 | p0+p1]
- uhadd16 r4, r4, r2 ; [(p2+p3+1)>>1 | (p0+p1+1)>>1]
- ; [B|A]
-
- add r5, r6, r7, lsl #1 ; [p2+2*p3 | p0+2*p1]
- add r5, r5, r8 ; [p2+2*p3+p4 | p0+2*p1+p2]
- uxtab16 r5, r5, r12 ; [p2+2*p3+p4+2 | p0+2*p1+p2+2]
-
- uadd16 r6, r7, r8 ; [p3+p4 | p1+p2]
- uhadd16 r6, r6, r2 ; [(p3+p4+1)>>1 | (p1+p2+1)>>1]
- ; [F|E]
-
- add r7, r7, r8, lsl #1 ; [p3+2*p4 | p1+2*p2]
- add r7, r7, r9 ; [p3+2*p4+p5 | p1+2*p2+p3]
- uxtab16 r7, r7, r12 ; [p3+2*p4+p5+2 | p1+2*p2+p3+2]
-
- add r8, r8, r9, lsl #1 ; [p4+2*p5 | p2+2*p3]
- add r8, r8, r10 ; [p4+2*p5+p6 | p2+2*p3+p4]
- uxtab16 r8, r8, r12 ; [p4+2*p5+p6+2 | p2+2*p3+p4+2]
-
- add r9, r9, r10, lsl #1 ; [p5+2*p6 | p3+2*p4]
- add r9, r9, r11 ; [p5+2*p6+p7 | p3+2*p4+p5]
- uxtab16 r9, r9, r12 ; [p5+2*p6+p7+2 | p3+2*p4+p5+2]
-
- ldr r0, [sp, #44] ; dst_stride
- ldr r3, [sp, #40] ; dst
-
- ; scale down
- and r5, lr, r5, asr #2 ; [D|C]
- and r7, lr, r7, asr #2 ; [H|G]
- and r8, lr, r8, asr #2 ; [I|D]
- and r9, lr, r9, asr #2 ; [J|H]
-
- add r10, r4, r6, lsl #8 ; [F|B|E|A]
- str r10, [r3], r0
-
- add r5, r5, r7, lsl #8 ; [H|C|G|D]
- str r5, [r3], r0
-
- pkhtb r12, r8, r4, asr #16 ; [-|I|-|B]
- pkhtb r10, r9, r8 ; [-|J|-|D]
-
- add r12, r6, r12, lsl #8 ; [I|F|B|E]
- str r12, [r3], r0
-
- add r10, r7, r10, lsl #8 ; [J|H|D|G]
- str r10, [r3]
-
- pop {r4-r12, pc}
-
-b_hd_pred
- ldrb r7, [r1], r2 ; l[0] = pp[3]
- ldr lr, [r0] ; Above = pp[8|7|6|5]
- ldrb r8, [sp, #48] ; tl = pp[4]
- ldrb r6, [r1], r2 ; l[1] = pp[2]
- ldrb r5, [r1], r2 ; l[2] = pp[1]
- ldrb r4, [r1] ; l[3] = pp[0]
-
- uxtb16 r9, lr ; p[7|5]
- uxtb16 r10, lr, ror #8 ; p[8|6]
-
- add r4, r4, r5, lsl #16 ; p[1|0]
- add r5, r5, r6, lsl #16 ; p[2|1]
- add r6, r6, r7, lsl #16 ; p[3|2]
- add r7, r7, r8, lsl #16 ; p[4|3]
-
- ldr r12, c00020002
- ldr lr, c00FF00FF
- ldr r2, c00010001
-
- pkhtb r8, r7, r9 ; p[4|5]
- pkhtb r1, r9, r10 ; p[7|6]
- pkhbt r10, r8, r10, lsl #16 ; p[6|5]
-
- uadd16 r11, r4, r5 ; [p1+p2 | p0+p1]
- uhadd16 r11, r11, r2 ; [(p1+p2+1)>>1 | (p0+p1+1)>>1]
- ; [B|A]
-
- add r4, r4, r5, lsl #1 ; [p1+2*p2 | p0+2*p1]
- add r4, r4, r6 ; [p1+2*p2+p3 | p0+2*p1+p2]
- uxtab16 r4, r4, r12 ; [p1+2*p2+p3+2 | p0+2*p1+p2+2]
-
- uadd16 r0, r6, r7 ; [p3+p4 | p2+p3]
- uhadd16 r0, r0, r2 ; [(p3+p4+1)>>1 | (p2+p3+1)>>1]
- ; [F|E]
-
- add r5, r6, r7, lsl #1 ; [p3+2*p4 | p2+2*p3]
- add r5, r5, r8, ror #16 ; [p3+2*p4+p5 | p2+2*p3+p4]
- uxtab16 r5, r5, r12 ; [p3+2*p4+p5+2 | p2+2*p3+p4+2]
-
- add r6, r12, r8, ror #16 ; [p5+2 | p4+2]
- add r6, r6, r10, lsl #1 ; [p5+2+2*p6 | p4+2+2*p5]
- uxtab16 r6, r6, r1 ; [p5+2+2*p6+p7 | p4+2+2*p5+p6]
-
- ; scale down
- and r4, lr, r4, asr #2 ; [D|C]
- and r5, lr, r5, asr #2 ; [H|G]
- and r6, lr, r6, asr #2 ; [J|I]
-
- ldr lr, [sp, #44] ; dst_stride
- ldr r3, [sp, #40] ; dst
-
- pkhtb r2, r0, r6 ; [-|F|-|I]
- pkhtb r12, r6, r5, asr #16 ; [-|J|-|H]
- add r12, r12, r2, lsl #8 ; [F|J|I|H]
- add r2, r0, r5, lsl #8 ; [H|F|G|E]
- mov r12, r12, ror #24 ; [J|I|H|F]
- str r12, [r3], lr
-
- mov r7, r11, asr #16 ; [-|-|-|B]
- str r2, [r3], lr
- add r7, r7, r0, lsl #16 ; [-|E|-|B]
- add r7, r7, r4, asr #8 ; [-|E|D|B]
- add r7, r7, r5, lsl #24 ; [G|E|D|B]
- str r7, [r3], lr
-
- add r5, r11, r4, lsl #8 ; [D|B|C|A]
- str r5, [r3]
-
- pop {r4-r12, pc}
-
-
-
-b_hu_pred
- ldrb r4, [r1], r2 ; Left[0]
- ldr r12, c00020002
- ldrb r5, [r1], r2 ; Left[1]
- ldr lr, c00FF00FF
- ldrb r6, [r1], r2 ; Left[2]
- ldr r2, c00010001
- ldrb r7, [r1] ; Left[3]
-
- add r4, r4, r5, lsl #16 ; [1|0]
- add r5, r5, r6, lsl #16 ; [2|1]
- add r9, r6, r7, lsl #16 ; [3|2]
-
- uadd16 r8, r4, r5 ; [p1+p2 | p0+p1]
- uhadd16 r8, r8, r2 ; [(p1+p2+1)>>1 | (p0+p1+1)>>1]
- ; [B|A]
-
- add r4, r4, r5, lsl #1 ; [p1+2*p2 | p0+2*p1]
- add r4, r4, r9 ; [p1+2*p2+p3 | p0+2*p1+p2]
- uxtab16 r4, r4, r12 ; [p1+2*p2+p3+2 | p0+2*p1+p2+2]
- ldr r2, [sp, #44] ; dst_stride
- ldr r3, [sp, #40] ; dst
- and r4, lr, r4, asr #2 ; [D|C]
-
- add r10, r6, r7 ; [p2+p3]
- add r11, r10, r7, lsl #1 ; [p2+3*p3]
- add r10, r10, #1
- add r11, r11, #2
- mov r10, r10, asr #1 ; [E]
- mov r11, r11, asr #2 ; [F]
-
- add r9, r7, r9, asr #8 ; [-|-|G|G]
- add r0, r8, r4, lsl #8 ; [D|B|C|A]
- add r7, r9, r9, lsl #16 ; [G|G|G|G]
-
- str r0, [r3], r2
-
- mov r1, r8, asr #16 ; [-|-|-|B]
- add r1, r1, r4, asr #8 ; [-|-|D|B]
- add r1, r1, r10, lsl #16 ; [-|E|D|B]
- add r1, r1, r11, lsl #24 ; [F|E|D|B]
- str r1, [r3], r2
-
- add r10, r11, lsl #8 ; [-|-|F|E]
- add r10, r10, r9, lsl #16 ; [G|G|F|E]
- str r10, [r3], r2
-
- str r7, [r3]
-
- pop {r4-r12, pc}
-
- ENDP
-
-; constants
-c00010001
- DCD 0x00010001
-c00020002
- DCD 0x00020002
-c00FF00FF
- DCD 0x00FF00FF
-
- END
* be found in the AUTHORS file in the root of the source tree.
*/
+#include <string.h>
#include "vpx_config.h"
+#include "./vpx_dsp_rtcd.h"
#include "vp8_rtcd.h"
#include "blockd.h"
-void vp8_intra4x4_predict_c(unsigned char *Above,
- unsigned char *yleft, int left_stride,
- int _b_mode,
- unsigned char *dst, int dst_stride,
- unsigned char top_left)
+typedef void (*intra_pred_fn)(uint8_t *dst, ptrdiff_t stride,
+ const uint8_t *above, const uint8_t *left);
+
+static intra_pred_fn pred[10];
+
+void vp8_init_intra4x4_predictors_internal(void)
+{
+ pred[B_DC_PRED] = vpx_dc_predictor_4x4;
+ pred[B_TM_PRED] = vpx_tm_predictor_4x4;
+ pred[B_VE_PRED] = vpx_ve_predictor_4x4;
+ pred[B_HE_PRED] = vpx_he_predictor_4x4;
+ pred[B_LD_PRED] = vpx_d45e_predictor_4x4;
+ pred[B_RD_PRED] = vpx_d135_predictor_4x4;
+ pred[B_VR_PRED] = vpx_d117_predictor_4x4;
+ pred[B_VL_PRED] = vpx_d63e_predictor_4x4;
+ pred[B_HD_PRED] = vpx_d153_predictor_4x4;
+ pred[B_HU_PRED] = vpx_d207_predictor_4x4;
+}
+
+void vp8_intra4x4_predict(unsigned char *above,
+ unsigned char *yleft, int left_stride,
+ B_PREDICTION_MODE b_mode,
+ unsigned char *dst, int dst_stride,
+ unsigned char top_left)
{
- int i, r, c;
- B_PREDICTION_MODE b_mode = (B_PREDICTION_MODE)_b_mode;
unsigned char Left[4];
+ unsigned char Aboveb[12], *Above = Aboveb + 4;
+
Left[0] = yleft[0];
Left[1] = yleft[left_stride];
Left[2] = yleft[2 * left_stride];
Left[3] = yleft[3 * left_stride];
+ memcpy(Above, above, 8);
+ Above[-1] = top_left;
- switch (b_mode)
- {
- case B_DC_PRED:
- {
- int expected_dc = 0;
-
- for (i = 0; i < 4; i++)
- {
- expected_dc += Above[i];
- expected_dc += Left[i];
- }
-
- expected_dc = (expected_dc + 4) >> 3;
-
- for (r = 0; r < 4; r++)
- {
- for (c = 0; c < 4; c++)
- {
- dst[c] = expected_dc;
- }
-
- dst += dst_stride;
- }
- }
- break;
- case B_TM_PRED:
- {
- /* prediction similar to true_motion prediction */
- for (r = 0; r < 4; r++)
- {
- for (c = 0; c < 4; c++)
- {
- int pred = Above[c] - top_left + Left[r];
-
- if (pred < 0)
- pred = 0;
-
- if (pred > 255)
- pred = 255;
-
- dst[c] = pred;
- }
-
- dst += dst_stride;
- }
- }
- break;
-
- case B_VE_PRED:
- {
-
- unsigned int ap[4];
- ap[0] = (top_left + 2 * Above[0] + Above[1] + 2) >> 2;
- ap[1] = (Above[0] + 2 * Above[1] + Above[2] + 2) >> 2;
- ap[2] = (Above[1] + 2 * Above[2] + Above[3] + 2) >> 2;
- ap[3] = (Above[2] + 2 * Above[3] + Above[4] + 2) >> 2;
-
- for (r = 0; r < 4; r++)
- {
- for (c = 0; c < 4; c++)
- {
-
- dst[c] = ap[c];
- }
-
- dst += dst_stride;
- }
-
- }
- break;
-
-
- case B_HE_PRED:
- {
-
- unsigned int lp[4];
- lp[0] = (top_left + 2 * Left[0] + Left[1] + 2) >> 2;
- lp[1] = (Left[0] + 2 * Left[1] + Left[2] + 2) >> 2;
- lp[2] = (Left[1] + 2 * Left[2] + Left[3] + 2) >> 2;
- lp[3] = (Left[2] + 2 * Left[3] + Left[3] + 2) >> 2;
-
- for (r = 0; r < 4; r++)
- {
- for (c = 0; c < 4; c++)
- {
- dst[c] = lp[r];
- }
-
- dst += dst_stride;
- }
- }
- break;
- case B_LD_PRED:
- {
- unsigned char *ptr = Above;
- dst[0 * dst_stride + 0] = (ptr[0] + ptr[1] * 2 + ptr[2] + 2) >> 2;
- dst[0 * dst_stride + 1] =
- dst[1 * dst_stride + 0] = (ptr[1] + ptr[2] * 2 + ptr[3] + 2) >> 2;
- dst[0 * dst_stride + 2] =
- dst[1 * dst_stride + 1] =
- dst[2 * dst_stride + 0] = (ptr[2] + ptr[3] * 2 + ptr[4] + 2) >> 2;
- dst[0 * dst_stride + 3] =
- dst[1 * dst_stride + 2] =
- dst[2 * dst_stride + 1] =
- dst[3 * dst_stride + 0] = (ptr[3] + ptr[4] * 2 + ptr[5] + 2) >> 2;
- dst[1 * dst_stride + 3] =
- dst[2 * dst_stride + 2] =
- dst[3 * dst_stride + 1] = (ptr[4] + ptr[5] * 2 + ptr[6] + 2) >> 2;
- dst[2 * dst_stride + 3] =
- dst[3 * dst_stride + 2] = (ptr[5] + ptr[6] * 2 + ptr[7] + 2) >> 2;
- dst[3 * dst_stride + 3] = (ptr[6] + ptr[7] * 2 + ptr[7] + 2) >> 2;
-
- }
- break;
- case B_RD_PRED:
- {
-
- unsigned char pp[9];
-
- pp[0] = Left[3];
- pp[1] = Left[2];
- pp[2] = Left[1];
- pp[3] = Left[0];
- pp[4] = top_left;
- pp[5] = Above[0];
- pp[6] = Above[1];
- pp[7] = Above[2];
- pp[8] = Above[3];
-
- dst[3 * dst_stride + 0] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2;
- dst[3 * dst_stride + 1] =
- dst[2 * dst_stride + 0] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2;
- dst[3 * dst_stride + 2] =
- dst[2 * dst_stride + 1] =
- dst[1 * dst_stride + 0] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2;
- dst[3 * dst_stride + 3] =
- dst[2 * dst_stride + 2] =
- dst[1 * dst_stride + 1] =
- dst[0 * dst_stride + 0] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2;
- dst[2 * dst_stride + 3] =
- dst[1 * dst_stride + 2] =
- dst[0 * dst_stride + 1] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2;
- dst[1 * dst_stride + 3] =
- dst[0 * dst_stride + 2] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2;
- dst[0 * dst_stride + 3] = (pp[6] + pp[7] * 2 + pp[8] + 2) >> 2;
-
- }
- break;
- case B_VR_PRED:
- {
-
- unsigned char pp[9];
-
- pp[0] = Left[3];
- pp[1] = Left[2];
- pp[2] = Left[1];
- pp[3] = Left[0];
- pp[4] = top_left;
- pp[5] = Above[0];
- pp[6] = Above[1];
- pp[7] = Above[2];
- pp[8] = Above[3];
-
-
- dst[3 * dst_stride + 0] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2;
- dst[2 * dst_stride + 0] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2;
- dst[3 * dst_stride + 1] =
- dst[1 * dst_stride + 0] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2;
- dst[2 * dst_stride + 1] =
- dst[0 * dst_stride + 0] = (pp[4] + pp[5] + 1) >> 1;
- dst[3 * dst_stride + 2] =
- dst[1 * dst_stride + 1] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2;
- dst[2 * dst_stride + 2] =
- dst[0 * dst_stride + 1] = (pp[5] + pp[6] + 1) >> 1;
- dst[3 * dst_stride + 3] =
- dst[1 * dst_stride + 2] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2;
- dst[2 * dst_stride + 3] =
- dst[0 * dst_stride + 2] = (pp[6] + pp[7] + 1) >> 1;
- dst[1 * dst_stride + 3] = (pp[6] + pp[7] * 2 + pp[8] + 2) >> 2;
- dst[0 * dst_stride + 3] = (pp[7] + pp[8] + 1) >> 1;
-
- }
- break;
- case B_VL_PRED:
- {
-
- unsigned char *pp = Above;
-
- dst[0 * dst_stride + 0] = (pp[0] + pp[1] + 1) >> 1;
- dst[1 * dst_stride + 0] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2;
- dst[2 * dst_stride + 0] =
- dst[0 * dst_stride + 1] = (pp[1] + pp[2] + 1) >> 1;
- dst[1 * dst_stride + 1] =
- dst[3 * dst_stride + 0] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2;
- dst[2 * dst_stride + 1] =
- dst[0 * dst_stride + 2] = (pp[2] + pp[3] + 1) >> 1;
- dst[3 * dst_stride + 1] =
- dst[1 * dst_stride + 2] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2;
- dst[0 * dst_stride + 3] =
- dst[2 * dst_stride + 2] = (pp[3] + pp[4] + 1) >> 1;
- dst[1 * dst_stride + 3] =
- dst[3 * dst_stride + 2] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2;
- dst[2 * dst_stride + 3] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2;
- dst[3 * dst_stride + 3] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2;
- }
- break;
-
- case B_HD_PRED:
- {
- unsigned char pp[9];
- pp[0] = Left[3];
- pp[1] = Left[2];
- pp[2] = Left[1];
- pp[3] = Left[0];
- pp[4] = top_left;
- pp[5] = Above[0];
- pp[6] = Above[1];
- pp[7] = Above[2];
- pp[8] = Above[3];
-
-
- dst[3 * dst_stride + 0] = (pp[0] + pp[1] + 1) >> 1;
- dst[3 * dst_stride + 1] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2;
- dst[2 * dst_stride + 0] =
- dst[3 * dst_stride + 2] = (pp[1] + pp[2] + 1) >> 1;
- dst[2 * dst_stride + 1] =
- dst[3 * dst_stride + 3] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2;
- dst[2 * dst_stride + 2] =
- dst[1 * dst_stride + 0] = (pp[2] + pp[3] + 1) >> 1;
- dst[2 * dst_stride + 3] =
- dst[1 * dst_stride + 1] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2;
- dst[1 * dst_stride + 2] =
- dst[0 * dst_stride + 0] = (pp[3] + pp[4] + 1) >> 1;
- dst[1 * dst_stride + 3] =
- dst[0 * dst_stride + 1] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2;
- dst[0 * dst_stride + 2] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2;
- dst[0 * dst_stride + 3] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2;
- }
- break;
-
-
- case B_HU_PRED:
- {
- unsigned char *pp = Left;
- dst[0 * dst_stride + 0] = (pp[0] + pp[1] + 1) >> 1;
- dst[0 * dst_stride + 1] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2;
- dst[0 * dst_stride + 2] =
- dst[1 * dst_stride + 0] = (pp[1] + pp[2] + 1) >> 1;
- dst[0 * dst_stride + 3] =
- dst[1 * dst_stride + 1] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2;
- dst[1 * dst_stride + 2] =
- dst[2 * dst_stride + 0] = (pp[2] + pp[3] + 1) >> 1;
- dst[1 * dst_stride + 3] =
- dst[2 * dst_stride + 1] = (pp[2] + pp[3] * 2 + pp[3] + 2) >> 2;
- dst[2 * dst_stride + 2] =
- dst[2 * dst_stride + 3] =
- dst[3 * dst_stride + 0] =
- dst[3 * dst_stride + 1] =
- dst[3 * dst_stride + 2] =
- dst[3 * dst_stride + 3] = pp[3];
- }
- break;
-
- default:
- break;
-
- }
+ pred[b_mode](dst, dst_stride, Above, Left);
}
projects / libvpx / commitdiff