making act segmenter

1 files changed, 117 insertions, 0 deletions

diff --git a/ffmpeg/libavresample/x86/dither.asm b/ffmpeg/libavresample/x86/dither.asm
new file mode 100644
index 0000000..757f280
--- /dev/null
+++ b/ffmpeg/libavresample/x86/dither.asm
@@ -0,0 +1,117 @@
+;******************************************************************************
+;* x86 optimized dithering format conversion
+;* Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
+;*
+;* 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_RODATA 32
+
+; 1.0f / (2.0f * INT32_MAX)
+pf_dither_scale: times 8 dd 2.32830643762e-10
+
+pf_s16_scale: times 4 dd 32753.0
+
+SECTION_TEXT
+
+;------------------------------------------------------------------------------
+; void ff_quantize(int16_t *dst, float *src, float *dither, int len);
+;------------------------------------------------------------------------------
+
+INIT_XMM sse2
+cglobal quantize, 4,4,3, dst, src, dither, len
+    lea         lenq, [2*lend]
+    add         dstq, lenq
+    lea         srcq, [srcq+2*lenq]
+    lea      ditherq, [ditherq+2*lenq]
+    neg         lenq
+    mova          m2, [pf_s16_scale]
+.loop:
+    mulps         m0, m2, [srcq+2*lenq]
+    mulps         m1, m2, [srcq+2*lenq+mmsize]
+    addps         m0, [ditherq+2*lenq]
+    addps         m1, [ditherq+2*lenq+mmsize]
+    cvtps2dq      m0, m0
+    cvtps2dq      m1, m1
+    packssdw      m0, m1
+    mova     [dstq+lenq], m0
+    add         lenq, mmsize
+    jl .loop
+    REP_RET
+
+;------------------------------------------------------------------------------
+; void ff_dither_int_to_float_rectangular(float *dst, int *src, int len)
+;------------------------------------------------------------------------------
+
+%macro DITHER_INT_TO_FLOAT_RECTANGULAR 0
+cglobal dither_int_to_float_rectangular, 3,3,3, dst, src, len
+    lea         lenq, [4*lend]
+    add         srcq, lenq
+    add         dstq, lenq
+    neg         lenq
+    mova          m0, [pf_dither_scale]
+.loop:
+    cvtdq2ps      m1, [srcq+lenq]
+    cvtdq2ps      m2, [srcq+lenq+mmsize]
+    mulps         m1, m1, m0
+    mulps         m2, m2, m0
+    mova  [dstq+lenq], m1
+    mova  [dstq+lenq+mmsize], m2
+    add         lenq, 2*mmsize
+    jl .loop
+    REP_RET
+%endmacro
+
+INIT_XMM sse2
+DITHER_INT_TO_FLOAT_RECTANGULAR
+INIT_YMM avx
+DITHER_INT_TO_FLOAT_RECTANGULAR
+
+;------------------------------------------------------------------------------
+; void ff_dither_int_to_float_triangular(float *dst, int *src0, int len)
+;------------------------------------------------------------------------------
+
+%macro DITHER_INT_TO_FLOAT_TRIANGULAR 0
+cglobal dither_int_to_float_triangular, 3,4,5, dst, src0, len, src1
+    lea         lenq, [4*lend]
+    lea        src1q, [src0q+2*lenq]
+    add        src0q, lenq
+    add         dstq, lenq
+    neg         lenq
+    mova          m0, [pf_dither_scale]
+.loop:
+    cvtdq2ps      m1, [src0q+lenq]
+    cvtdq2ps      m2, [src0q+lenq+mmsize]
+    cvtdq2ps      m3, [src1q+lenq]
+    cvtdq2ps      m4, [src1q+lenq+mmsize]
+    addps         m1, m1, m3
+    addps         m2, m2, m4
+    mulps         m1, m1, m0
+    mulps         m2, m2, m0
+    mova  [dstq+lenq], m1
+    mova  [dstq+lenq+mmsize], m2
+    add         lenq, 2*mmsize
+    jl .loop
+    REP_RET
+%endmacro
+
+INIT_XMM sse2
+DITHER_INT_TO_FLOAT_TRIANGULAR
+INIT_YMM avx
+DITHER_INT_TO_FLOAT_TRIANGULAR