x86/dca: remove unused header

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/x86/dca.h

-/*
- * Copyright (c) 2012-2014 Christophe Gisquet <christophe.gisquet@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
- */
-
-#ifndef AVCODEC_X86_DCA_H
-#define AVCODEC_X86_DCA_H
-
-#include "config.h"
-
-#if ARCH_X86_64 && HAVE_SSE2_INLINE
-# include "libavutil/x86/asm.h"
-# include "libavutil/mem.h"
-#include "libavcodec/dcadsp.h"
-
-# define int8x8_fmul_int32 int8x8_fmul_int32
-static inline void int8x8_fmul_int32(av_unused DCADSPContext *dsp,
-                                     float *dst, const int8_t *src, int scale)
-{
-    DECLARE_ALIGNED(16, static const uint32_t, inverse16) = 0x3D800000;
-    __asm__ volatile (
-        "cvtsi2ss        %2, %%xmm0 \n\t"
-        "mulss           %3, %%xmm0 \n\t"
-        "movq          (%1), %%xmm1 \n\t"
-        "punpcklbw   %%xmm1, %%xmm1 \n\t"
-        "movaps      %%xmm1, %%xmm2 \n\t"
-        "punpcklwd   %%xmm1, %%xmm1 \n\t"
-        "punpckhwd   %%xmm2, %%xmm2 \n\t"
-        "psrad          $24, %%xmm1 \n\t"
-        "psrad          $24, %%xmm2 \n\t"
-        "shufps  $0, %%xmm0, %%xmm0 \n\t"
-        "cvtdq2ps    %%xmm1, %%xmm1 \n\t"
-        "cvtdq2ps    %%xmm2, %%xmm2 \n\t"
-        "mulps       %%xmm0, %%xmm1 \n\t"
-        "mulps       %%xmm0, %%xmm2 \n\t"
-        "movaps      %%xmm1,  0(%0) \n\t"
-        "movaps      %%xmm2, 16(%0) \n\t"
-        :: "r"(dst), "r"(src), "m"(scale), "m"(inverse16)
-        XMM_CLOBBERS_ONLY("xmm0", "xmm1", "xmm2")
-    );
-}
-
-#endif /* ARCH_X86_64 && HAVE_SSE2_INLINE */
-
-#endif /* AVCODEC_X86_DCA_H */