281 lines
6.9 KiB
NASM
281 lines
6.9 KiB
NASM
;
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; Copyright (c) 2010 The VP8 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 and patent
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; grant that can be found in the LICENSE file in the root of the source
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; tree. All contributing project authors may be found in the AUTHORS
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; file in the root of the source tree.
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;
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EXPORT |vp8_recon_b_armv6|
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EXPORT |vp8_recon2b_armv6|
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EXPORT |vp8_recon4b_armv6|
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AREA |.text|, CODE, READONLY ; name this block of code
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prd RN r0
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dif RN r1
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dst RN r2
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stride RN r3
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;void recon_b(unsigned char *pred_ptr, short *diff_ptr, unsigned char *dst_ptr, int stride)
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; R0 char* pred_ptr
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; R1 short * dif_ptr
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; R2 char * dst_ptr
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; R3 int stride
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; Description:
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; Loop through the block adding the Pred and Diff together. Clamp and then
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; store back into the Dst.
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; Restrictions :
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; all buffers are expected to be 4 byte aligned coming in and
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; going out.
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;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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;
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;
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;
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;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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|vp8_recon_b_armv6| PROC
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stmdb sp!, {r4 - r9, lr}
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;0, 1, 2, 3
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ldr r4, [prd], #16 ; 3 | 2 | 1 | 0
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ldr r6, [dif, #0] ; 1 | 0
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ldr r7, [dif, #4] ; 3 | 2
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pkhbt r8, r6, r7, lsl #16 ; 2 | 0
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pkhtb r9, r7, r6, asr #16 ; 3 | 1
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uxtab16 r8, r8, r4 ; 2 | 0 + 3 | 2 | 2 | 0
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uxtab16 r9, r9, r4, ror #8 ; 3 | 1 + 0 | 3 | 2 | 1
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usat16 r8, #8, r8
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usat16 r9, #8, r9
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add dif, dif, #32
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orr r8, r8, r9, lsl #8
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str r8, [dst], stride
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;0, 1, 2, 3
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ldr r4, [prd], #16 ; 3 | 2 | 1 | 0
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;; ldr r6, [dif, #8] ; 1 | 0
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;; ldr r7, [dif, #12] ; 3 | 2
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ldr r6, [dif, #0] ; 1 | 0
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ldr r7, [dif, #4] ; 3 | 2
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pkhbt r8, r6, r7, lsl #16 ; 2 | 0
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pkhtb r9, r7, r6, asr #16 ; 3 | 1
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uxtab16 r8, r8, r4 ; 2 | 0 + 3 | 2 | 2 | 0
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uxtab16 r9, r9, r4, ror #8 ; 3 | 1 + 0 | 3 | 2 | 1
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usat16 r8, #8, r8
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usat16 r9, #8, r9
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add dif, dif, #32
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orr r8, r8, r9, lsl #8
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str r8, [dst], stride
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;0, 1, 2, 3
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ldr r4, [prd], #16 ; 3 | 2 | 1 | 0
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;; ldr r6, [dif, #16] ; 1 | 0
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;; ldr r7, [dif, #20] ; 3 | 2
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ldr r6, [dif, #0] ; 1 | 0
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ldr r7, [dif, #4] ; 3 | 2
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pkhbt r8, r6, r7, lsl #16 ; 2 | 0
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pkhtb r9, r7, r6, asr #16 ; 3 | 1
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uxtab16 r8, r8, r4 ; 2 | 0 + 3 | 2 | 2 | 0
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uxtab16 r9, r9, r4, ror #8 ; 3 | 1 + 0 | 3 | 2 | 1
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usat16 r8, #8, r8
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usat16 r9, #8, r9
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add dif, dif, #32
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orr r8, r8, r9, lsl #8
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str r8, [dst], stride
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;0, 1, 2, 3
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ldr r4, [prd], #16 ; 3 | 2 | 1 | 0
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;; ldr r6, [dif, #24] ; 1 | 0
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;; ldr r7, [dif, #28] ; 3 | 2
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ldr r6, [dif, #0] ; 1 | 0
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ldr r7, [dif, #4] ; 3 | 2
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pkhbt r8, r6, r7, lsl #16 ; 2 | 0
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pkhtb r9, r7, r6, asr #16 ; 3 | 1
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uxtab16 r8, r8, r4 ; 2 | 0 + 3 | 2 | 2 | 0
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uxtab16 r9, r9, r4, ror #8 ; 3 | 1 + 0 | 3 | 2 | 1
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usat16 r8, #8, r8
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usat16 r9, #8, r9
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orr r8, r8, r9, lsl #8
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str r8, [dst], stride
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ldmia sp!, {r4 - r9, pc}
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ENDP ; |recon_b|
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;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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;
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;
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;
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;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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; R0 char *pred_ptr
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; R1 short *dif_ptr
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; R2 char *dst_ptr
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; R3 int stride
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|vp8_recon4b_armv6| PROC
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stmdb sp!, {r4 - r9, lr}
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mov lr, #4
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recon4b_loop
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;0, 1, 2, 3
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ldr r4, [prd], #4 ; 3 | 2 | 1 | 0
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ldr r6, [dif, #0] ; 1 | 0
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ldr r7, [dif, #4] ; 3 | 2
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pkhbt r8, r6, r7, lsl #16 ; 2 | 0
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pkhtb r9, r7, r6, asr #16 ; 3 | 1
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uxtab16 r8, r8, r4 ; 2 | 0 + 3 | 2 | 2 | 0
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uxtab16 r9, r9, r4, ror #8 ; 3 | 1 + 0 | 3 | 2 | 1
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usat16 r8, #8, r8
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usat16 r9, #8, r9
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orr r8, r8, r9, lsl #8
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str r8, [dst]
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;4, 5, 6, 7
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ldr r4, [prd], #4
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;; ldr r6, [dif, #32]
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;; ldr r7, [dif, #36]
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ldr r6, [dif, #8]
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ldr r7, [dif, #12]
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pkhbt r8, r6, r7, lsl #16
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pkhtb r9, r7, r6, asr #16
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uxtab16 r8, r8, r4
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uxtab16 r9, r9, r4, ror #8
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usat16 r8, #8, r8
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usat16 r9, #8, r9
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orr r8, r8, r9, lsl #8
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str r8, [dst, #4]
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;8, 9, 10, 11
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ldr r4, [prd], #4
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;; ldr r6, [dif, #64]
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;; ldr r7, [dif, #68]
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ldr r6, [dif, #16]
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ldr r7, [dif, #20]
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pkhbt r8, r6, r7, lsl #16
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pkhtb r9, r7, r6, asr #16
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uxtab16 r8, r8, r4
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uxtab16 r9, r9, r4, ror #8
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usat16 r8, #8, r8
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usat16 r9, #8, r9
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orr r8, r8, r9, lsl #8
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str r8, [dst, #8]
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;12, 13, 14, 15
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ldr r4, [prd], #4
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;; ldr r6, [dif, #96]
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;; ldr r7, [dif, #100]
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ldr r6, [dif, #24]
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ldr r7, [dif, #28]
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pkhbt r8, r6, r7, lsl #16
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pkhtb r9, r7, r6, asr #16
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uxtab16 r8, r8, r4
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uxtab16 r9, r9, r4, ror #8
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usat16 r8, #8, r8
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usat16 r9, #8, r9
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orr r8, r8, r9, lsl #8
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str r8, [dst, #12]
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add dst, dst, stride
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;; add dif, dif, #8
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add dif, dif, #32
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subs lr, lr, #1
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bne recon4b_loop
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ldmia sp!, {r4 - r9, pc}
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ENDP ; |Recon4B|
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;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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;
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;
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;
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;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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; R0 char *pred_ptr
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; R1 short *dif_ptr
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; R2 char *dst_ptr
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; R3 int stride
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|vp8_recon2b_armv6| PROC
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stmdb sp!, {r4 - r9, lr}
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mov lr, #4
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recon2b_loop
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;0, 1, 2, 3
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ldr r4, [prd], #4
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ldr r6, [dif, #0]
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ldr r7, [dif, #4]
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pkhbt r8, r6, r7, lsl #16
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pkhtb r9, r7, r6, asr #16
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uxtab16 r8, r8, r4
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uxtab16 r9, r9, r4, ror #8
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usat16 r8, #8, r8
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usat16 r9, #8, r9
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orr r8, r8, r9, lsl #8
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str r8, [dst]
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;4, 5, 6, 7
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ldr r4, [prd], #4
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;; ldr r6, [dif, #32]
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;; ldr r7, [dif, #36]
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ldr r6, [dif, #8]
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ldr r7, [dif, #12]
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pkhbt r8, r6, r7, lsl #16
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pkhtb r9, r7, r6, asr #16
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uxtab16 r8, r8, r4
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uxtab16 r9, r9, r4, ror #8
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usat16 r8, #8, r8
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usat16 r9, #8, r9
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orr r8, r8, r9, lsl #8
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str r8, [dst, #4]
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add dst, dst, stride
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;; add dif, dif, #8
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add dif, dif, #16
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subs lr, lr, #1
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bne recon2b_loop
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ldmia sp!, {r4 - r9, pc}
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ENDP ; |Recon2B|
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END
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