diff options
Diffstat (limited to 'libvpx/vp8/encoder/arm/armv6/vp8_subtract_armv6.asm')
| -rw-r--r-- | libvpx/vp8/encoder/arm/armv6/vp8_subtract_armv6.asm | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/libvpx/vp8/encoder/arm/armv6/vp8_subtract_armv6.asm b/libvpx/vp8/encoder/arm/armv6/vp8_subtract_armv6.asm new file mode 100644 index 0000000..f329f8f --- /dev/null +++ b/libvpx/vp8/encoder/arm/armv6/vp8_subtract_armv6.asm @@ -0,0 +1,272 @@ +; +; 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_subtract_mby_armv6| + EXPORT |vp8_subtract_mbuv_armv6| + EXPORT |vp8_subtract_b_armv6| + + INCLUDE asm_enc_offsets.asm + + ARM + REQUIRE8 + PRESERVE8 + + AREA ||.text||, CODE, READONLY, ALIGN=2 + +; r0 BLOCK *be +; r1 BLOCKD *bd +; r2 int pitch +|vp8_subtract_b_armv6| PROC + + stmfd sp!, {r4-r9} + + ldr r4, [r0, #vp8_block_base_src] + ldr r5, [r0, #vp8_block_src] + ldr r6, [r0, #vp8_block_src_diff] + + ldr r3, [r4] + ldr r7, [r0, #vp8_block_src_stride] + add r3, r3, r5 ; src = *base_src + src + ldr r8, [r1, #vp8_blockd_predictor] + + mov r9, #4 ; loop count + +loop_block + + ldr r0, [r3], r7 ; src + ldr r1, [r8], r2 ; pred + + uxtb16 r4, r0 ; [s2 | s0] + uxtb16 r5, r1 ; [p2 | p0] + uxtb16 r0, r0, ror #8 ; [s3 | s1] + uxtb16 r1, r1, ror #8 ; [p3 | p1] + + usub16 r4, r4, r5 ; [d2 | d0] + usub16 r5, r0, r1 ; [d3 | d1] + + subs r9, r9, #1 ; decrement loop counter + + pkhbt r0, r4, r5, lsl #16 ; [d1 | d0] + pkhtb r1, r5, r4, asr #16 ; [d3 | d2] + + str r0, [r6, #0] ; diff + str r1, [r6, #4] ; diff + + add r6, r6, r2, lsl #1 ; update diff pointer + bne loop_block + + ldmfd sp!, {r4-r9} + mov pc, lr + + ENDP + + +; r0 short *diff +; r1 unsigned char *usrc +; r2 unsigned char *vsrc +; r3 int src_stride +; sp unsigned char *upred +; sp unsigned char *vpred +; sp int pred_stride +|vp8_subtract_mbuv_armv6| PROC + + stmfd sp!, {r4-r11} + + add r0, r0, #512 ; set *diff point to Cb + mov r4, #8 ; loop count + ldr r5, [sp, #32] ; upred + ldr r12, [sp, #40] ; pred_stride + + ; Subtract U block +loop_u + ldr r6, [r1] ; usrc (A) + ldr r7, [r5] ; upred (A) + + uxtb16 r8, r6 ; [s2 | s0] (A) + uxtb16 r9, r7 ; [p2 | p0] (A) + uxtb16 r10, r6, ror #8 ; [s3 | s1] (A) + uxtb16 r11, r7, ror #8 ; [p3 | p1] (A) + + usub16 r6, r8, r9 ; [d2 | d0] (A) + usub16 r7, r10, r11 ; [d3 | d1] (A) + + ldr r10, [r1, #4] ; usrc (B) + ldr r11, [r5, #4] ; upred (B) + + pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (A) + pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (A) + + str r8, [r0], #4 ; diff (A) + uxtb16 r8, r10 ; [s2 | s0] (B) + str r9, [r0], #4 ; diff (A) + + uxtb16 r9, r11 ; [p2 | p0] (B) + uxtb16 r10, r10, ror #8 ; [s3 | s1] (B) + uxtb16 r11, r11, ror #8 ; [p3 | p1] (B) + + usub16 r6, r8, r9 ; [d2 | d0] (B) + usub16 r7, r10, r11 ; [d3 | d1] (B) + + add r1, r1, r3 ; update usrc pointer + add r5, r5, r12 ; update upred pointer + + pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (B) + pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (B) + + str r8, [r0], #4 ; diff (B) + subs r4, r4, #1 ; update loop counter + str r9, [r0], #4 ; diff (B) + + bne loop_u + + ldr r5, [sp, #36] ; vpred + mov r4, #8 ; loop count + + ; Subtract V block +loop_v + ldr r6, [r2] ; vsrc (A) + ldr r7, [r5] ; vpred (A) + + uxtb16 r8, r6 ; [s2 | s0] (A) + uxtb16 r9, r7 ; [p2 | p0] (A) + uxtb16 r10, r6, ror #8 ; [s3 | s1] (A) + uxtb16 r11, r7, ror #8 ; [p3 | p1] (A) + + usub16 r6, r8, r9 ; [d2 | d0] (A) + usub16 r7, r10, r11 ; [d3 | d1] (A) + + ldr r10, [r2, #4] ; vsrc (B) + ldr r11, [r5, #4] ; vpred (B) + + pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (A) + pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (A) + + str r8, [r0], #4 ; diff (A) + uxtb16 r8, r10 ; [s2 | s0] (B) + str r9, [r0], #4 ; diff (A) + + uxtb16 r9, r11 ; [p2 | p0] (B) + uxtb16 r10, r10, ror #8 ; [s3 | s1] (B) + uxtb16 r11, r11, ror #8 ; [p3 | p1] (B) + + usub16 r6, r8, r9 ; [d2 | d0] (B) + usub16 r7, r10, r11 ; [d3 | d1] (B) + + add r2, r2, r3 ; update vsrc pointer + add r5, r5, r12 ; update vpred pointer + + pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (B) + pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (B) + + str r8, [r0], #4 ; diff (B) + subs r4, r4, #1 ; update loop counter + str r9, [r0], #4 ; diff (B) + + bne loop_v + + ldmfd sp!, {r4-r11} + bx lr + + ENDP + + +; r0 short *diff +; r1 unsigned char *src +; r2 int src_stride +; r3 unsigned char *pred +; sp int pred_stride +|vp8_subtract_mby_armv6| PROC + + stmfd sp!, {r4-r11} + ldr r12, [sp, #32] ; pred_stride + mov r4, #16 +loop + ldr r6, [r1] ; src (A) + ldr r7, [r3] ; pred (A) + + uxtb16 r8, r6 ; [s2 | s0] (A) + uxtb16 r9, r7 ; [p2 | p0] (A) + uxtb16 r10, r6, ror #8 ; [s3 | s1] (A) + uxtb16 r11, r7, ror #8 ; [p3 | p1] (A) + + usub16 r6, r8, r9 ; [d2 | d0] (A) + usub16 r7, r10, r11 ; [d3 | d1] (A) + + ldr r10, [r1, #4] ; src (B) + ldr r11, [r3, #4] ; pred (B) + + pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (A) + pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (A) + + str r8, [r0], #4 ; diff (A) + uxtb16 r8, r10 ; [s2 | s0] (B) + str r9, [r0], #4 ; diff (A) + + uxtb16 r9, r11 ; [p2 | p0] (B) + uxtb16 r10, r10, ror #8 ; [s3 | s1] (B) + uxtb16 r11, r11, ror #8 ; [p3 | p1] (B) + + usub16 r6, r8, r9 ; [d2 | d0] (B) + usub16 r7, r10, r11 ; [d3 | d1] (B) + + ldr r10, [r1, #8] ; src (C) + ldr r11, [r3, #8] ; pred (C) + + pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (B) + pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (B) + + str r8, [r0], #4 ; diff (B) + uxtb16 r8, r10 ; [s2 | s0] (C) + str r9, [r0], #4 ; diff (B) + + uxtb16 r9, r11 ; [p2 | p0] (C) + uxtb16 r10, r10, ror #8 ; [s3 | s1] (C) + uxtb16 r11, r11, ror #8 ; [p3 | p1] (C) + + usub16 r6, r8, r9 ; [d2 | d0] (C) + usub16 r7, r10, r11 ; [d3 | d1] (C) + + ldr r10, [r1, #12] ; src (D) + ldr r11, [r3, #12] ; pred (D) + + pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (C) + pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (C) + + str r8, [r0], #4 ; diff (C) + uxtb16 r8, r10 ; [s2 | s0] (D) + str r9, [r0], #4 ; diff (C) + + uxtb16 r9, r11 ; [p2 | p0] (D) + uxtb16 r10, r10, ror #8 ; [s3 | s1] (D) + uxtb16 r11, r11, ror #8 ; [p3 | p1] (D) + + usub16 r6, r8, r9 ; [d2 | d0] (D) + usub16 r7, r10, r11 ; [d3 | d1] (D) + + add r1, r1, r2 ; update src pointer + add r3, r3, r12 ; update pred pointer + + pkhbt r8, r6, r7, lsl #16 ; [d1 | d0] (D) + pkhtb r9, r7, r6, asr #16 ; [d3 | d2] (D) + + str r8, [r0], #4 ; diff (D) + subs r4, r4, #1 ; update loop counter + str r9, [r0], #4 ; diff (D) + + bne loop + + ldmfd sp!, {r4-r11} + bx lr + + ENDP + + END + |