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-rw-r--r--media/libvpx/vp9/encoder/x86/vp9_subtract_sse2.asm127
1 files changed, 127 insertions, 0 deletions
diff --git a/media/libvpx/vp9/encoder/x86/vp9_subtract_sse2.asm b/media/libvpx/vp9/encoder/x86/vp9_subtract_sse2.asm
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+++ b/media/libvpx/vp9/encoder/x86/vp9_subtract_sse2.asm
@@ -0,0 +1,127 @@
+;
+; 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 "third_party/x86inc/x86inc.asm"
+
+SECTION .text
+
+; void vp9_subtract_block(int rows, int cols,
+; int16_t *diff, ptrdiff_t diff_stride,
+; const uint8_t *src, ptrdiff_t src_stride,
+; const uint8_t *pred, ptrdiff_t pred_stride)
+
+INIT_XMM sse2
+cglobal subtract_block, 7, 7, 8, \
+ rows, cols, diff, diff_stride, src, src_stride, \
+ pred, pred_stride
+%define pred_str colsq
+ pxor m7, m7 ; dedicated zero register
+ cmp colsd, 4
+ je .case_4
+ cmp colsd, 8
+ je .case_8
+ cmp colsd, 16
+ je .case_16
+ cmp colsd, 32
+ je .case_32
+
+%macro loop16 6
+ mova m0, [srcq+%1]
+ mova m4, [srcq+%2]
+ mova m1, [predq+%3]
+ mova m5, [predq+%4]
+ punpckhbw m2, m0, m7
+ punpckhbw m3, m1, m7
+ punpcklbw m0, m7
+ punpcklbw m1, m7
+ psubw m2, m3
+ psubw m0, m1
+ punpckhbw m1, m4, m7
+ punpckhbw m3, m5, m7
+ punpcklbw m4, m7
+ punpcklbw m5, m7
+ psubw m1, m3
+ psubw m4, m5
+ mova [diffq+mmsize*0+%5], m0
+ mova [diffq+mmsize*1+%5], m2
+ mova [diffq+mmsize*0+%6], m4
+ mova [diffq+mmsize*1+%6], m1
+%endmacro
+
+ mov pred_str, pred_stridemp
+.loop_64:
+ loop16 0*mmsize, 1*mmsize, 0*mmsize, 1*mmsize, 0*mmsize, 2*mmsize
+ loop16 2*mmsize, 3*mmsize, 2*mmsize, 3*mmsize, 4*mmsize, 6*mmsize
+ lea diffq, [diffq+diff_strideq*2]
+ add predq, pred_str
+ add srcq, src_strideq
+ dec rowsd
+ jg .loop_64
+ RET
+
+.case_32:
+ mov pred_str, pred_stridemp
+.loop_32:
+ loop16 0, mmsize, 0, mmsize, 0, 2*mmsize
+ lea diffq, [diffq+diff_strideq*2]
+ add predq, pred_str
+ add srcq, src_strideq
+ dec rowsd
+ jg .loop_32
+ RET
+
+.case_16:
+ mov pred_str, pred_stridemp
+.loop_16:
+ loop16 0, src_strideq, 0, pred_str, 0, diff_strideq*2
+ lea diffq, [diffq+diff_strideq*4]
+ lea predq, [predq+pred_str*2]
+ lea srcq, [srcq+src_strideq*2]
+ sub rowsd, 2
+ jg .loop_16
+ RET
+
+%macro loop_h 0
+ movh m0, [srcq]
+ movh m2, [srcq+src_strideq]
+ movh m1, [predq]
+ movh m3, [predq+pred_str]
+ punpcklbw m0, m7
+ punpcklbw m1, m7
+ punpcklbw m2, m7
+ punpcklbw m3, m7
+ psubw m0, m1
+ psubw m2, m3
+ mova [diffq], m0
+ mova [diffq+diff_strideq*2], m2
+%endmacro
+
+.case_8:
+ mov pred_str, pred_stridemp
+.loop_8:
+ loop_h
+ lea diffq, [diffq+diff_strideq*4]
+ lea srcq, [srcq+src_strideq*2]
+ lea predq, [predq+pred_str*2]
+ sub rowsd, 2
+ jg .loop_8
+ RET
+
+INIT_MMX
+.case_4:
+ mov pred_str, pred_stridemp
+.loop_4:
+ loop_h
+ lea diffq, [diffq+diff_strideq*4]
+ lea srcq, [srcq+src_strideq*2]
+ lea predq, [predq+pred_str*2]
+ sub rowsd, 2
+ jg .loop_4
+ RET