1 files changed, 74 insertions, 0 deletions
diff --git a/libavcodec/x86/flacdsp.asm b/libavcodec/x86/flacdsp.asm
new file mode 100644
index 0000000000..37ee87b163
--- /dev/null
+++ b/libavcodec/x86/flacdsp.asm
@@ -0,0 +1,74 @@
+;******************************************************************************
+;* FLAC DSP SIMD optimizations
+;*
+;* Copyright (C) 2014 Loren Merritt
+;*
+;* This file is part of FFmpeg.
+;*
+;* FFmpeg is free software; you can redistribute it and/or
+;* modify it under the terms of the GNU Lesser General Public
+;* License as published by the Free Software Foundation; either
+;* version 2.1 of the License, or (at your option) any later version.
+;*
+;* FFmpeg 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
+;* Lesser General Public License for more details.
+;*
+;* You should have received a copy of the GNU Lesser General Public
+;* License along with FFmpeg; if not, write to the Free Software
+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;******************************************************************************
+
+%include "libavutil/x86/x86util.asm"
+
+SECTION .text
+
+%macro LPC_32 1
+INIT_XMM %1
+cglobal flac_lpc_32, 5,6,5, decoded, coeffs, pred_order, qlevel, len, j
+    sub    lend, pred_orderd
+    jle .ret
+    lea    decodedq, [decodedq+pred_orderq*4-8]
+    lea    coeffsq, [coeffsq+pred_orderq*4]
+    neg    pred_orderq
+    movd   m4, qlevelm
+ALIGN 16
+.loop_sample:
+    movd   m0, [decodedq+pred_orderq*4+8]
+    add    decodedq, 8
+    movd   m1, [coeffsq+pred_orderq*4]
+    pxor   m2, m2
+    pxor   m3, m3
+    lea    jq, [pred_orderq+1]
+    test   jq, jq
+    jz .end_order
+.loop_order:
+    PMACSDQL m2, m0, m1, m2, m0
+    movd   m0, [decodedq+jq*4]
+    PMACSDQL m3, m1, m0, m3, m1
+    movd   m1, [coeffsq+jq*4]
+    inc    jq
+    jl .loop_order
+.end_order:
+    PMACSDQL m2, m0, m1, m2, m0
+    psrlq  m2, m4
+    movd   m0, [decodedq]
+    paddd  m0, m2
+    movd   [decodedq], m0
+    sub  lend, 2
+    jl .ret
+    PMACSDQL m3, m1, m0, m3, m1
+    psrlq  m3, m4
+    movd   m1, [decodedq+4]
+    paddd  m1, m3
+    movd   [decodedq+4], m1
+    jg .loop_sample
+.ret:
+    REP_RET
+%endmacro
+
+%if HAVE_XOP_EXTERNAL
+LPC_32 xop
+%endif
+LPC_32 sse4