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Unified Diff: source/libvpx/vp9/encoder/x86/vp9_dct_mmx.asm

Issue 11555023: libvpx: Add VP9 decoder. (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/libvpx/
Patch Set: Created 8 years ago
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« libvpx.gyp ('K') | « source/libvpx/vp9/encoder/x86/vp9_dct_mmx.h ('k') | source/libvpx/vp9/encoder/x86/vp9_dct_sse2.asm » ('j') | no next file with comments »
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Index: source/libvpx/vp9/encoder/x86/vp9_dct_mmx.asm
===================================================================
--- source/libvpx/vp9/encoder/x86/vp9_dct_mmx.asm (revision 0)
+++ source/libvpx/vp9/encoder/x86/vp9_dct_mmx.asm (revision 0)
@@ -0,0 +1,241 @@
+;
+; 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.
+;
+
+
+%include "vpx_ports/x86_abi_support.asm"
+
+;void vp9_short_fdct4x4_mmx(short *input, short *output, int pitch)
+global sym(vp9_short_fdct4x4_mmx)
+sym(vp9_short_fdct4x4_mmx):
+ push rbp
+ mov rbp, rsp
+ SHADOW_ARGS_TO_STACK 3
+ GET_GOT rbx
+ push rsi
+ push rdi
+ ; end prolog
+
+ mov rsi, arg(0) ; input
+ mov rdi, arg(1) ; output
+
+ movsxd rax, dword ptr arg(2) ;pitch
+
+ lea rcx, [rsi + rax*2]
+ ; read the input data
+ movq mm0, [rsi]
+ movq mm1, [rsi + rax]
+
+ movq mm2, [rcx]
+ movq mm4, [rcx + rax]
+
+ ; transpose for the first stage
+ movq mm3, mm0 ; 00 01 02 03
+ movq mm5, mm2 ; 20 21 22 23
+
+ punpcklwd mm0, mm1 ; 00 10 01 11
+ punpckhwd mm3, mm1 ; 02 12 03 13
+
+ punpcklwd mm2, mm4 ; 20 30 21 31
+ punpckhwd mm5, mm4 ; 22 32 23 33
+
+ movq mm1, mm0 ; 00 10 01 11
+ punpckldq mm0, mm2 ; 00 10 20 30
+
+ punpckhdq mm1, mm2 ; 01 11 21 31
+
+ movq mm2, mm3 ; 02 12 03 13
+ punpckldq mm2, mm5 ; 02 12 22 32
+
+ punpckhdq mm3, mm5 ; 03 13 23 33
+
+ ; mm0 0
+ ; mm1 1
+ ; mm2 2
+ ; mm3 3
+
+ ; first stage
+ movq mm5, mm0
+ movq mm4, mm1
+
+ paddw mm0, mm3 ; a1 = 0 + 3
+ paddw mm1, mm2 ; b1 = 1 + 2
+
+ psubw mm4, mm2 ; c1 = 1 - 2
+ psubw mm5, mm3 ; d1 = 0 - 3
+
+ psllw mm5, 3
+ psllw mm4, 3
+
+ psllw mm0, 3
+ psllw mm1, 3
+
+ ; output 0 and 2
+ movq mm2, mm0 ; a1
+
+ paddw mm0, mm1 ; op[0] = a1 + b1
+ psubw mm2, mm1 ; op[2] = a1 - b1
+
+ ; output 1 and 3
+ ; interleave c1, d1
+ movq mm1, mm5 ; d1
+ punpcklwd mm1, mm4 ; c1 d1
+ punpckhwd mm5, mm4 ; c1 d1
+
+ movq mm3, mm1
+ movq mm4, mm5
+
+ pmaddwd mm1, MMWORD PTR[GLOBAL (_5352_2217)] ; c1*2217 + d1*5352
+ pmaddwd mm4, MMWORD PTR[GLOBAL (_5352_2217)] ; c1*2217 + d1*5352
+
+ pmaddwd mm3, MMWORD PTR[GLOBAL(_2217_neg5352)] ; d1*2217 - c1*5352
+ pmaddwd mm5, MMWORD PTR[GLOBAL(_2217_neg5352)] ; d1*2217 - c1*5352
+
+ paddd mm1, MMWORD PTR[GLOBAL(_14500)]
+ paddd mm4, MMWORD PTR[GLOBAL(_14500)]
+ paddd mm3, MMWORD PTR[GLOBAL(_7500)]
+ paddd mm5, MMWORD PTR[GLOBAL(_7500)]
+
+ psrad mm1, 12 ; (c1 * 2217 + d1 * 5352 + 14500)>>12
+ psrad mm4, 12 ; (c1 * 2217 + d1 * 5352 + 14500)>>12
+ psrad mm3, 12 ; (d1 * 2217 - c1 * 5352 + 7500)>>12
+ psrad mm5, 12 ; (d1 * 2217 - c1 * 5352 + 7500)>>12
+
+ packssdw mm1, mm4 ; op[1]
+ packssdw mm3, mm5 ; op[3]
+
+ ; done with vertical
+ ; transpose for the second stage
+ movq mm4, mm0 ; 00 10 20 30
+ movq mm5, mm2 ; 02 12 22 32
+
+ punpcklwd mm0, mm1 ; 00 01 10 11
+ punpckhwd mm4, mm1 ; 20 21 30 31
+
+ punpcklwd mm2, mm3 ; 02 03 12 13
+ punpckhwd mm5, mm3 ; 22 23 32 33
+
+ movq mm1, mm0 ; 00 01 10 11
+ punpckldq mm0, mm2 ; 00 01 02 03
+
+ punpckhdq mm1, mm2 ; 01 22 12 13
+
+ movq mm2, mm4 ; 20 31 30 31
+ punpckldq mm2, mm5 ; 20 21 22 23
+
+ punpckhdq mm4, mm5 ; 30 31 32 33
+
+ ; mm0 0
+ ; mm1 1
+ ; mm2 2
+ ; mm3 4
+
+ movq mm5, mm0
+ movq mm3, mm1
+
+ paddw mm0, mm4 ; a1 = 0 + 3
+ paddw mm1, mm2 ; b1 = 1 + 2
+
+ psubw mm3, mm2 ; c1 = 1 - 2
+ psubw mm5, mm4 ; d1 = 0 - 3
+
+ pxor mm6, mm6 ; zero out for compare
+
+ pcmpeqw mm6, mm5 ; d1 != 0
+
+ pandn mm6, MMWORD PTR[GLOBAL(_cmp_mask)] ; clear upper,
+ ; and keep bit 0 of lower
+
+ ; output 0 and 2
+ movq mm2, mm0 ; a1
+
+ paddw mm0, mm1 ; a1 + b1
+ psubw mm2, mm1 ; a1 - b1
+
+ paddw mm0, MMWORD PTR[GLOBAL(_7w)]
+ paddw mm2, MMWORD PTR[GLOBAL(_7w)]
+
+ psraw mm0, 4 ; op[0] = (a1 + b1 + 7)>>4
+ psraw mm2, 4 ; op[8] = (a1 - b1 + 7)>>4
+
+ movq MMWORD PTR[rdi + 0 ], mm0
+ movq MMWORD PTR[rdi + 16], mm2
+
+ ; output 1 and 3
+ ; interleave c1, d1
+ movq mm1, mm5 ; d1
+ punpcklwd mm1, mm3 ; c1 d1
+ punpckhwd mm5, mm3 ; c1 d1
+
+ movq mm3, mm1
+ movq mm4, mm5
+
+ pmaddwd mm1, MMWORD PTR[GLOBAL (_5352_2217)] ; c1*2217 + d1*5352
+ pmaddwd mm4, MMWORD PTR[GLOBAL (_5352_2217)] ; c1*2217 + d1*5352
+
+ pmaddwd mm3, MMWORD PTR[GLOBAL(_2217_neg5352)] ; d1*2217 - c1*5352
+ pmaddwd mm5, MMWORD PTR[GLOBAL(_2217_neg5352)] ; d1*2217 - c1*5352
+
+ paddd mm1, MMWORD PTR[GLOBAL(_12000)]
+ paddd mm4, MMWORD PTR[GLOBAL(_12000)]
+ paddd mm3, MMWORD PTR[GLOBAL(_51000)]
+ paddd mm5, MMWORD PTR[GLOBAL(_51000)]
+
+ psrad mm1, 16 ; (c1 * 2217 + d1 * 5352 + 14500)>>16
+ psrad mm4, 16 ; (c1 * 2217 + d1 * 5352 + 14500)>>16
+ psrad mm3, 16 ; (d1 * 2217 - c1 * 5352 + 7500)>>16
+ psrad mm5, 16 ; (d1 * 2217 - c1 * 5352 + 7500)>>16
+
+ packssdw mm1, mm4 ; op[4]
+ packssdw mm3, mm5 ; op[12]
+
+ paddw mm1, mm6 ; op[4] += (d1!=0)
+
+ movq MMWORD PTR[rdi + 8 ], mm1
+ movq MMWORD PTR[rdi + 24], mm3
+
+ ; begin epilog
+ pop rdi
+ pop rsi
+ RESTORE_GOT
+ UNSHADOW_ARGS
+ pop rbp
+ ret
+
+SECTION_RODATA
+align 8
+_5352_2217:
+ dw 5352
+ dw 2217
+ dw 5352
+ dw 2217
+align 8
+_2217_neg5352:
+ dw 2217
+ dw -5352
+ dw 2217
+ dw -5352
+align 8
+_cmp_mask:
+ times 4 dw 1
+align 8
+_7w:
+ times 4 dw 7
+align 8
+_14500:
+ times 2 dd 14500
+align 8
+_7500:
+ times 2 dd 7500
+align 8
+_12000:
+ times 2 dd 12000
+align 8
+_51000:
+ times 2 dd 51000
« libvpx.gyp ('K') | « source/libvpx/vp9/encoder/x86/vp9_dct_mmx.h ('k') | source/libvpx/vp9/encoder/x86/vp9_dct_sse2.asm » ('j') | no next file with comments »

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