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| author | Jason Garrett-Glaser <darkshikari@gmail.com> | 2009-01-03 00:46:17 +0000 |
|---|---|---|
| committer | Jason Garrett-Glaser <darkshikari@gmail.com> | 2009-01-03 00:46:17 +0000 |
| commit | 37fed100873707b070ba692a0b46e545a08e53c1 (patch) | |
| tree | 0b2423fd5120162dbe51d580b4a2a6ae8a30ff14 /libavcodec/x86/h264_idct_sse2.asm | |
| parent | c96da3edc3aba4dbf1e24c8fb8cc3abadd15257c (diff) | |
| download | ffmpeg-37fed100873707b070ba692a0b46e545a08e53c1.tar.gz | |
Add x264 SSE2 iDCT functions to H.264 decoder.
Originally committed as revision 16409 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/x86/h264_idct_sse2.asm')
| -rwxr-xr-x | libavcodec/x86/h264_idct_sse2.asm | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/libavcodec/x86/h264_idct_sse2.asm b/libavcodec/x86/h264_idct_sse2.asm new file mode 100755 index 0000000000..a46cd975de --- /dev/null +++ b/libavcodec/x86/h264_idct_sse2.asm @@ -0,0 +1,61 @@ +;*****************************************************************************
+;* dct-a.asm: h264 encoder library
+;*****************************************************************************
+;* Copyright (C) 2003-2008 x264 project
+;*
+;* Authors: Laurent Aimar <fenrir@via.ecp.fr>
+;* Loren Merritt <lorenm@u.washington.edu>
+;* Holger Lubitz <hal@duncan.ol.sub.de>
+;* Min Chen <chenm001.163.com>
+;*
+;* This program is free software; you can redistribute it and/or modify
+;* it under the terms of the GNU General Public License as published by
+;* the Free Software Foundation; either version 2 of the License, or
+;* (at your option) any later version.
+;*
+;* This program is distributed in the hope that it will be useful,
+;* but WITHOUT ANY WARRANTY; without even the implied warranty of
+;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;* GNU General Public License for more details.
+;*
+;* You should have received a copy of the GNU General Public License
+;* along with this program; if not, write to the Free Software
+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
+;*****************************************************************************
+
+%include "x86inc.asm"
+%include "x86util.asm"
+
+SECTION_RODATA
+pw_32: times 8 dw 32
+
+SECTION .text
+
+%macro IDCT4_1D 6
+ SUMSUB_BA m%3, m%1
+ SUMSUBD2_AB m%2, m%4, m%6, m%5
+ SUMSUB_BADC m%2, m%3, m%5, m%1
+ SWAP %1, %2, %5, %4, %3
+%endmacro
+
+INIT_XMM
+cglobal x264_add8x4_idct_sse2, 3,3
+ movq m0, [r1+ 0]
+ movq m1, [r1+ 8]
+ movq m2, [r1+16]
+ movq m3, [r1+24]
+ movhps m0, [r1+32]
+ movhps m1, [r1+40]
+ movhps m2, [r1+48]
+ movhps m3, [r1+56]
+ IDCT4_1D 0,1,2,3,4,5
+ TRANSPOSE2x4x4W 0,1,2,3,4
+ paddw m0, [pw_32 GLOBAL]
+ IDCT4_1D 0,1,2,3,4,5
+ pxor m7, m7
+ STORE_DIFF m0, m4, m7, [r0]
+ STORE_DIFF m1, m4, m7, [r0+r2]
+ lea r0, [r0+r2*2]
+ STORE_DIFF m2, m4, m7, [r0]
+ STORE_DIFF m3, m4, m7, [r0+r2]
+ RET
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