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Diffstat (limited to 'media/libvpx/vp8/common/arm/armv6/iwalsh_v6.asm')
| -rw-r--r-- | media/libvpx/vp8/common/arm/armv6/iwalsh_v6.asm | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/media/libvpx/vp8/common/arm/armv6/iwalsh_v6.asm b/media/libvpx/vp8/common/arm/armv6/iwalsh_v6.asm new file mode 100644 index 000000000..31ef09cad --- /dev/null +++ b/media/libvpx/vp8/common/arm/armv6/iwalsh_v6.asm @@ -0,0 +1,136 @@ +; +; 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_short_inv_walsh4x4_v6| + + ARM + REQUIRE8 + PRESERVE8 + + AREA |.text|, CODE, READONLY ; name this block of code + +;short vp8_short_inv_walsh4x4_v6(short *input, short *mb_dqcoeff) +|vp8_short_inv_walsh4x4_v6| PROC + + stmdb sp!, {r4 - r12, lr} + + ldr r2, [r0, #0] ; [1 | 0] + ldr r3, [r0, #4] ; [3 | 2] + ldr r4, [r0, #8] ; [5 | 4] + ldr r5, [r0, #12] ; [7 | 6] + ldr r6, [r0, #16] ; [9 | 8] + ldr r7, [r0, #20] ; [11 | 10] + ldr r8, [r0, #24] ; [13 | 12] + ldr r9, [r0, #28] ; [15 | 14] + + qadd16 r10, r2, r8 ; a1 [1+13 | 0+12] + qadd16 r11, r4, r6 ; b1 [5+9 | 4+8] + qsub16 r12, r4, r6 ; c1 [5-9 | 4-8] + qsub16 lr, r2, r8 ; d1 [1-13 | 0-12] + + qadd16 r2, r10, r11 ; a1 + b1 [1 | 0] + qadd16 r4, r12, lr ; c1 + d1 [5 | 4] + qsub16 r6, r10, r11 ; a1 - b1 [9 | 8] + qsub16 r8, lr, r12 ; d1 - c1 [13 | 12] + + qadd16 r10, r3, r9 ; a1 [3+15 | 2+14] + qadd16 r11, r5, r7 ; b1 [7+11 | 6+10] + qsub16 r12, r5, r7 ; c1 [7-11 | 6-10] + qsub16 lr, r3, r9 ; d1 [3-15 | 2-14] + + qadd16 r3, r10, r11 ; a1 + b1 [3 | 2] + qadd16 r5, r12, lr ; c1 + d1 [7 | 6] + qsub16 r7, r10, r11 ; a1 - b1 [11 | 10] + qsub16 r9, lr, r12 ; d1 - c1 [15 | 14] + + ; first transform complete + + qsubaddx r10, r2, r3 ; [c1|a1] [1-2 | 0+3] + qaddsubx r11, r2, r3 ; [b1|d1] [1+2 | 0-3] + qsubaddx r12, r4, r5 ; [c1|a1] [5-6 | 4+7] + qaddsubx lr, r4, r5 ; [b1|d1] [5+6 | 4-7] + + qaddsubx r2, r10, r11 ; [b2|c2] [c1+d1 | a1-b1] + qaddsubx r3, r11, r10 ; [a2|d2] [b1+a1 | d1-c1] + ldr r10, c0x00030003 + qaddsubx r4, r12, lr ; [b2|c2] [c1+d1 | a1-b1] + qaddsubx r5, lr, r12 ; [a2|d2] [b1+a1 | d1-c1] + + qadd16 r2, r2, r10 ; [b2+3|c2+3] + qadd16 r3, r3, r10 ; [a2+3|d2+3] + qadd16 r4, r4, r10 ; [b2+3|c2+3] + qadd16 r5, r5, r10 ; [a2+3|d2+3] + + asr r12, r3, #19 ; [0] + strh r12, [r1], #32 + asr lr, r2, #19 ; [1] + strh lr, [r1], #32 + sxth r2, r2 + sxth r3, r3 + asr r2, r2, #3 ; [2] + strh r2, [r1], #32 + asr r3, r3, #3 ; [3] + strh r3, [r1], #32 + + asr r12, r5, #19 ; [4] + strh r12, [r1], #32 + asr lr, r4, #19 ; [5] + strh lr, [r1], #32 + sxth r4, r4 + sxth r5, r5 + asr r4, r4, #3 ; [6] + strh r4, [r1], #32 + asr r5, r5, #3 ; [7] + strh r5, [r1], #32 + + qsubaddx r2, r6, r7 ; [c1|a1] [9-10 | 8+11] + qaddsubx r3, r6, r7 ; [b1|d1] [9+10 | 8-11] + qsubaddx r4, r8, r9 ; [c1|a1] [13-14 | 12+15] + qaddsubx r5, r8, r9 ; [b1|d1] [13+14 | 12-15] + + qaddsubx r6, r2, r3 ; [b2|c2] [c1+d1 | a1-b1] + qaddsubx r7, r3, r2 ; [a2|d2] [b1+a1 | d1-c1] + qaddsubx r8, r4, r5 ; [b2|c2] [c1+d1 | a1-b1] + qaddsubx r9, r5, r4 ; [a2|d2] [b1+a1 | d1-c1] + + qadd16 r6, r6, r10 ; [b2+3|c2+3] + qadd16 r7, r7, r10 ; [a2+3|d2+3] + qadd16 r8, r8, r10 ; [b2+3|c2+3] + qadd16 r9, r9, r10 ; [a2+3|d2+3] + + asr r12, r7, #19 ; [8] + strh r12, [r1], #32 + asr lr, r6, #19 ; [9] + strh lr, [r1], #32 + sxth r6, r6 + sxth r7, r7 + asr r6, r6, #3 ; [10] + strh r6, [r1], #32 + asr r7, r7, #3 ; [11] + strh r7, [r1], #32 + + asr r12, r9, #19 ; [12] + strh r12, [r1], #32 + asr lr, r8, #19 ; [13] + strh lr, [r1], #32 + sxth r8, r8 + sxth r9, r9 + asr r8, r8, #3 ; [14] + strh r8, [r1], #32 + asr r9, r9, #3 ; [15] + strh r9, [r1], #32 + + ldmia sp!, {r4 - r12, pc} + ENDP ; |vp8_short_inv_walsh4x4_v6| + + +; Constant Pool +c0x00030003 DCD 0x00030003 + END |