Add m-esr52 at 52.6.0

15 files changed, 2696 insertions, 0 deletions

diff --git a/media/libav/libavcodec/avfft.c b/media/libav/libavcodec/avfft.c
new file mode 100644
index 000000000..513f57e5f
--- /dev/null
+++ b/media/libav/libavcodec/avfft.c
@@ -0,0 +1,145 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/attributes.h"
+#include "libavutil/mem.h"
+#include "avfft.h"
+#include "fft.h"
+#include "rdft.h"
+#include "dct.h"
+
+/* FFT */
+
+FFTContext *av_fft_init(int nbits, int inverse)
+{
+    FFTContext *s = av_malloc(sizeof(*s));
+
+    if (s && ff_fft_init(s, nbits, inverse))
+        av_freep(&s);
+
+    return s;
+}
+
+void av_fft_permute(FFTContext *s, FFTComplex *z)
+{
+    s->fft_permute(s, z);
+}
+
+void av_fft_calc(FFTContext *s, FFTComplex *z)
+{
+    s->fft_calc(s, z);
+}
+
+av_cold void av_fft_end(FFTContext *s)
+{
+    if (s) {
+        ff_fft_end(s);
+        av_free(s);
+    }
+}
+
+#if CONFIG_MDCT
+
+FFTContext *av_mdct_init(int nbits, int inverse, double scale)
+{
+    FFTContext *s = av_malloc(sizeof(*s));
+
+    if (s && ff_mdct_init(s, nbits, inverse, scale))
+        av_freep(&s);
+
+    return s;
+}
+
+void av_imdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input)
+{
+    s->imdct_calc(s, output, input);
+}
+
+void av_imdct_half(FFTContext *s, FFTSample *output, const FFTSample *input)
+{
+    s->imdct_half(s, output, input);
+}
+
+void av_mdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input)
+{
+    s->mdct_calc(s, output, input);
+}
+
+av_cold void av_mdct_end(FFTContext *s)
+{
+    if (s) {
+        ff_mdct_end(s);
+        av_free(s);
+    }
+}
+
+#endif /* CONFIG_MDCT */
+
+#if CONFIG_RDFT
+
+RDFTContext *av_rdft_init(int nbits, enum RDFTransformType trans)
+{
+    RDFTContext *s = av_malloc(sizeof(*s));
+
+    if (s && ff_rdft_init(s, nbits, trans))
+        av_freep(&s);
+
+    return s;
+}
+
+void av_rdft_calc(RDFTContext *s, FFTSample *data)
+{
+    s->rdft_calc(s, data);
+}
+
+av_cold void av_rdft_end(RDFTContext *s)
+{
+    if (s) {
+        ff_rdft_end(s);
+        av_free(s);
+    }
+}
+
+#endif /* CONFIG_RDFT */
+
+#if CONFIG_DCT
+
+DCTContext *av_dct_init(int nbits, enum DCTTransformType inverse)
+{
+    DCTContext *s = av_malloc(sizeof(*s));
+
+    if (s && ff_dct_init(s, nbits, inverse))
+        av_freep(&s);
+
+    return s;
+}
+
+void av_dct_calc(DCTContext *s, FFTSample *data)
+{
+    s->dct_calc(s, data);
+}
+
+av_cold void av_dct_end(DCTContext *s)
+{
+    if (s) {
+        ff_dct_end(s);
+        av_free(s);
+    }
+}
+
+#endif /* CONFIG_DCT */
diff --git a/media/libav/libavcodec/avfft.h b/media/libav/libavcodec/avfft.h
new file mode 100644
index 000000000..e2e727da9
--- /dev/null
+++ b/media/libav/libavcodec/avfft.h
@@ -0,0 +1,118 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_AVFFT_H
+#define AVCODEC_AVFFT_H
+
+/**
+ * @file
+ * @ingroup lavc_fft
+ * FFT functions
+ */
+
+/**
+ * @defgroup lavc_fft FFT functions
+ * @ingroup lavc_misc
+ *
+ * @{
+ */
+
+typedef float FFTSample;
+
+typedef struct FFTComplex {
+    FFTSample re, im;
+} FFTComplex;
+
+typedef struct FFTContext FFTContext;
+
+/**
+ * Set up a complex FFT.
+ * @param nbits           log2 of the length of the input array
+ * @param inverse         if 0 perform the forward transform, if 1 perform the inverse
+ */
+FFTContext *av_fft_init(int nbits, int inverse);
+
+/**
+ * Do the permutation needed BEFORE calling ff_fft_calc().
+ */
+void av_fft_permute(FFTContext *s, FFTComplex *z);
+
+/**
+ * Do a complex FFT with the parameters defined in av_fft_init(). The
+ * input data must be permuted before. No 1.0/sqrt(n) normalization is done.
+ */
+void av_fft_calc(FFTContext *s, FFTComplex *z);
+
+void av_fft_end(FFTContext *s);
+
+FFTContext *av_mdct_init(int nbits, int inverse, double scale);
+void av_imdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input);
+void av_imdct_half(FFTContext *s, FFTSample *output, const FFTSample *input);
+void av_mdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input);
+void av_mdct_end(FFTContext *s);
+
+/* Real Discrete Fourier Transform */
+
+enum RDFTransformType {
+    DFT_R2C,
+    IDFT_C2R,
+    IDFT_R2C,
+    DFT_C2R,
+};
+
+typedef struct RDFTContext RDFTContext;
+
+/**
+ * Set up a real FFT.
+ * @param nbits           log2 of the length of the input array
+ * @param trans           the type of transform
+ */
+RDFTContext *av_rdft_init(int nbits, enum RDFTransformType trans);
+void av_rdft_calc(RDFTContext *s, FFTSample *data);
+void av_rdft_end(RDFTContext *s);
+
+/* Discrete Cosine Transform */
+
+typedef struct DCTContext DCTContext;
+
+enum DCTTransformType {
+    DCT_II = 0,
+    DCT_III,
+    DCT_I,
+    DST_I,
+};
+
+/**
+ * Set up DCT.
+ *
+ * @param nbits           size of the input array:
+ *                        (1 << nbits)     for DCT-II, DCT-III and DST-I
+ *                        (1 << nbits) + 1 for DCT-I
+ * @param type            the type of transform
+ *
+ * @note the first element of the input of DST-I is ignored
+ */
+DCTContext *av_dct_init(int nbits, enum DCTTransformType type);
+void av_dct_calc(DCTContext *s, FFTSample *data);
+void av_dct_end (DCTContext *s);
+
+/**
+ * @}
+ */
+
+#endif /* AVCODEC_AVFFT_H */
diff --git a/media/libav/libavcodec/dct.h b/media/libav/libavcodec/dct.h
new file mode 100644
index 000000000..3fd4e2783
--- /dev/null
+++ b/media/libav/libavcodec/dct.h
@@ -0,0 +1,63 @@
+/*
+ * (I)DCT Transforms
+ * Copyright (c) 2009 Peter Ross <pross@xvid.org>
+ * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
+ * Copyright (c) 2010 Vitor Sessak
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef AVCODEC_DCT_H
+#define AVCODEC_DCT_H
+
+#include <stdint.h>
+
+#include "rdft.h"
+
+struct DCTContext {
+    int nbits;
+    int inverse;
+    RDFTContext rdft;
+    const float *costab;
+    FFTSample *csc2;
+    void (*dct_calc)(struct DCTContext *s, FFTSample *data);
+    void (*dct32)(FFTSample *out, const FFTSample *in);
+};
+
+/**
+ * Set up DCT.
+ * @param nbits           size of the input array:
+ *                        (1 << nbits)     for DCT-II, DCT-III and DST-I
+ *                        (1 << nbits) + 1 for DCT-I
+ *
+ * @note the first element of the input of DST-I is ignored
+ */
+int  ff_dct_init(DCTContext *s, int nbits, enum DCTTransformType type);
+void ff_dct_end (DCTContext *s);
+
+void ff_dct_init_x86(DCTContext *s);
+
+void ff_fdct_ifast(int16_t *data);
+void ff_fdct_ifast248(int16_t *data);
+void ff_jpeg_fdct_islow_8(int16_t *data);
+void ff_jpeg_fdct_islow_10(int16_t *data);
+void ff_fdct248_islow_8(int16_t *data);
+void ff_fdct248_islow_10(int16_t *data);
+
+void ff_j_rev_dct(int16_t *data);
+
+#endif /* AVCODEC_DCT_H */
diff --git a/media/libav/libavcodec/fft-internal.h b/media/libav/libavcodec/fft-internal.h
new file mode 100644
index 000000000..a449ec058
--- /dev/null
+++ b/media/libav/libavcodec/fft-internal.h
@@ -0,0 +1,75 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_FFT_INTERNAL_H
+#define AVCODEC_FFT_INTERNAL_H
+
+#if FFT_FLOAT
+
+#define FIX15(v) (v)
+#define sqrthalf (float)M_SQRT1_2
+
+#define BF(x, y, a, b) do {                     \
+        x = a - b;                              \
+        y = a + b;                              \
+    } while (0)
+
+#define CMUL(dre, dim, are, aim, bre, bim) do { \
+        (dre) = (are) * (bre) - (aim) * (bim);  \
+        (dim) = (are) * (bim) + (aim) * (bre);  \
+    } while (0)
+
+#else
+
+#include "fft.h"
+#include "mathops.h"
+
+void ff_mdct_calcw_c(FFTContext *s, FFTDouble *output, const FFTSample *input);
+
+#define SCALE_FLOAT(a, bits) lrint((a) * (double)(1 << (bits)))
+#define FIX15(a) av_clip(SCALE_FLOAT(a, 15), -32767, 32767)
+
+#define sqrthalf ((int16_t)((1<<15)*M_SQRT1_2))
+
+#define BF(x, y, a, b) do {                     \
+        x = (a - b) >> 1;                       \
+        y = (a + b) >> 1;                       \
+    } while (0)
+
+#define CMULS(dre, dim, are, aim, bre, bim, sh) do {            \
+        (dre) = (MUL16(are, bre) - MUL16(aim, bim)) >> sh;      \
+        (dim) = (MUL16(are, bim) + MUL16(aim, bre)) >> sh;      \
+    } while (0)
+
+#define CMUL(dre, dim, are, aim, bre, bim)      \
+    CMULS(dre, dim, are, aim, bre, bim, 15)
+
+#define CMULL(dre, dim, are, aim, bre, bim)     \
+    CMULS(dre, dim, are, aim, bre, bim, 0)
+
+#endif /* FFT_FLOAT */
+
+#define ff_imdct_calc_c FFT_NAME(ff_imdct_calc_c)
+#define ff_imdct_half_c FFT_NAME(ff_imdct_half_c)
+#define ff_mdct_calc_c  FFT_NAME(ff_mdct_calc_c)
+
+void ff_imdct_calc_c(FFTContext *s, FFTSample *output, const FFTSample *input);
+void ff_imdct_half_c(FFTContext *s, FFTSample *output, const FFTSample *input);
+void ff_mdct_calc_c(FFTContext *s, FFTSample *output, const FFTSample *input);
+
+#endif /* AVCODEC_FFT_INTERNAL_H */
diff --git a/media/libav/libavcodec/fft.h b/media/libav/libavcodec/fft.h
new file mode 100644
index 000000000..7daae24ca
--- /dev/null
+++ b/media/libav/libavcodec/fft.h
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_FFT_H
+#define AVCODEC_FFT_H
+
+#ifndef FFT_FLOAT
+#define FFT_FLOAT 1
+#endif
+
+#include <stdint.h>
+#include "config.h"
+#include "libavutil/mem.h"
+
+#if FFT_FLOAT
+
+#include "avfft.h"
+
+#define FFT_NAME(x) x
+
+typedef float FFTDouble;
+
+#else
+
+#define FFT_NAME(x) x ## _fixed
+
+typedef int16_t FFTSample;
+typedef int     FFTDouble;
+
+typedef struct FFTComplex {
+    int16_t re, im;
+} FFTComplex;
+
+typedef struct FFTContext FFTContext;
+
+#endif /* FFT_FLOAT */
+
+typedef struct FFTDComplex {
+    FFTDouble re, im;
+} FFTDComplex;
+
+/* FFT computation */
+
+enum fft_permutation_type {
+    FF_FFT_PERM_DEFAULT,
+    FF_FFT_PERM_SWAP_LSBS,
+    FF_FFT_PERM_AVX,
+};
+
+enum mdct_permutation_type {
+    FF_MDCT_PERM_NONE,
+    FF_MDCT_PERM_INTERLEAVE,
+};
+
+struct FFTContext {
+    int nbits;
+    int inverse;
+    uint16_t *revtab;
+    FFTComplex *tmp_buf;
+    int mdct_size; /* size of MDCT (i.e. number of input data * 2) */
+    int mdct_bits; /* n = 2^nbits */
+    /* pre/post rotation tables */
+    FFTSample *tcos;
+    FFTSample *tsin;
+    /**
+     * Do the permutation needed BEFORE calling fft_calc().
+     */
+    void (*fft_permute)(struct FFTContext *s, FFTComplex *z);
+    /**
+     * Do a complex FFT with the parameters defined in ff_fft_init(). The
+     * input data must be permuted before. No 1.0/sqrt(n) normalization is done.
+     */
+    void (*fft_calc)(struct FFTContext *s, FFTComplex *z);
+    void (*imdct_calc)(struct FFTContext *s, FFTSample *output, const FFTSample *input);
+    void (*imdct_half)(struct FFTContext *s, FFTSample *output, const FFTSample *input);
+    void (*mdct_calc)(struct FFTContext *s, FFTSample *output, const FFTSample *input);
+    void (*mdct_calcw)(struct FFTContext *s, FFTDouble *output, const FFTSample *input);
+    enum fft_permutation_type fft_permutation;
+    enum mdct_permutation_type mdct_permutation;
+};
+
+#if CONFIG_HARDCODED_TABLES
+#define COSTABLE_CONST const
+#else
+#define COSTABLE_CONST
+#endif
+
+#define COSTABLE(size) \
+    COSTABLE_CONST DECLARE_ALIGNED(32, FFTSample, FFT_NAME(ff_cos_##size))[size/2]
+
+extern COSTABLE(16);
+extern COSTABLE(32);
+extern COSTABLE(64);
+extern COSTABLE(128);
+extern COSTABLE(256);
+extern COSTABLE(512);
+extern COSTABLE(1024);
+extern COSTABLE(2048);
+extern COSTABLE(4096);
+extern COSTABLE(8192);
+extern COSTABLE(16384);
+extern COSTABLE(32768);
+extern COSTABLE(65536);
+extern COSTABLE_CONST FFTSample* const FFT_NAME(ff_cos_tabs)[17];
+
+#define ff_init_ff_cos_tabs FFT_NAME(ff_init_ff_cos_tabs)
+
+/**
+ * Initialize the cosine table in ff_cos_tabs[index]
+ * @param index index in ff_cos_tabs array of the table to initialize
+ */
+void ff_init_ff_cos_tabs(int index);
+
+#define ff_fft_init FFT_NAME(ff_fft_init)
+#define ff_fft_end  FFT_NAME(ff_fft_end)
+
+/**
+ * Set up a complex FFT.
+ * @param nbits           log2 of the length of the input array
+ * @param inverse         if 0 perform the forward transform, if 1 perform the inverse
+ */
+int ff_fft_init(FFTContext *s, int nbits, int inverse);
+
+void ff_fft_init_aarch64(FFTContext *s);
+void ff_fft_init_x86(FFTContext *s);
+void ff_fft_init_arm(FFTContext *s);
+void ff_fft_init_ppc(FFTContext *s);
+
+void ff_fft_fixed_init_arm(FFTContext *s);
+
+void ff_fft_end(FFTContext *s);
+
+#define ff_mdct_init FFT_NAME(ff_mdct_init)
+#define ff_mdct_end  FFT_NAME(ff_mdct_end)
+
+int ff_mdct_init(FFTContext *s, int nbits, int inverse, double scale);
+void ff_mdct_end(FFTContext *s);
+
+#endif /* AVCODEC_FFT_H */
diff --git a/media/libav/libavcodec/fft_fixed.c b/media/libav/libavcodec/fft_fixed.c
new file mode 100644
index 000000000..bad482148
--- /dev/null
+++ b/media/libav/libavcodec/fft_fixed.c
@@ -0,0 +1,20 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#define FFT_FLOAT 0
+#include "fft_template.c"
diff --git a/media/libav/libavcodec/fft_float.c b/media/libav/libavcodec/fft_float.c
new file mode 100644
index 000000000..ed4cffa11
--- /dev/null
+++ b/media/libav/libavcodec/fft_float.c
@@ -0,0 +1,20 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#define FFT_FLOAT 1
+#include "fft_template.c"
diff --git a/media/libav/libavcodec/fft_template.c b/media/libav/libavcodec/fft_template.c
new file mode 100644
index 000000000..808f317c1
--- /dev/null
+++ b/media/libav/libavcodec/fft_template.c
@@ -0,0 +1,353 @@
+/*
+ * FFT/IFFT transforms
+ * Copyright (c) 2008 Loren Merritt
+ * Copyright (c) 2002 Fabrice Bellard
+ * Partly based on libdjbfft by D. J. Bernstein
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * FFT/IFFT transforms.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include "libavutil/mathematics.h"
+#include "fft.h"
+#include "fft-internal.h"
+
+/* cos(2*pi*x/n) for 0<=x<=n/4, followed by its reverse */
+#if !CONFIG_HARDCODED_TABLES
+COSTABLE(16);
+COSTABLE(32);
+COSTABLE(64);
+COSTABLE(128);
+COSTABLE(256);
+COSTABLE(512);
+COSTABLE(1024);
+COSTABLE(2048);
+COSTABLE(4096);
+COSTABLE(8192);
+COSTABLE(16384);
+COSTABLE(32768);
+COSTABLE(65536);
+#endif
+COSTABLE_CONST FFTSample * const FFT_NAME(ff_cos_tabs)[] = {
+    NULL, NULL, NULL, NULL,
+    FFT_NAME(ff_cos_16),
+    FFT_NAME(ff_cos_32),
+    FFT_NAME(ff_cos_64),
+    FFT_NAME(ff_cos_128),
+    FFT_NAME(ff_cos_256),
+    FFT_NAME(ff_cos_512),
+    FFT_NAME(ff_cos_1024),
+    FFT_NAME(ff_cos_2048),
+    FFT_NAME(ff_cos_4096),
+    FFT_NAME(ff_cos_8192),
+    FFT_NAME(ff_cos_16384),
+    FFT_NAME(ff_cos_32768),
+    FFT_NAME(ff_cos_65536),
+};
+
+static void fft_permute_c(FFTContext *s, FFTComplex *z);
+static void fft_calc_c(FFTContext *s, FFTComplex *z);
+
+static int split_radix_permutation(int i, int n, int inverse)
+{
+    int m;
+    if(n <= 2) return i&1;
+    m = n >> 1;
+    if(!(i&m))            return split_radix_permutation(i, m, inverse)*2;
+    m >>= 1;
+    if(inverse == !(i&m)) return split_radix_permutation(i, m, inverse)*4 + 1;
+    else                  return split_radix_permutation(i, m, inverse)*4 - 1;
+}
+
+av_cold void ff_init_ff_cos_tabs(int index)
+{
+#if !CONFIG_HARDCODED_TABLES
+    int i;
+    int m = 1<<index;
+    double freq = 2*M_PI/m;
+    FFTSample *tab = FFT_NAME(ff_cos_tabs)[index];
+    for(i=0; i<=m/4; i++)
+        tab[i] = FIX15(cos(i*freq));
+    for(i=1; i<m/4; i++)
+        tab[m/2-i] = tab[i];
+#endif
+}
+
+static const int avx_tab[] = {
+    0, 4, 1, 5, 8, 12, 9, 13, 2, 6, 3, 7, 10, 14, 11, 15
+};
+
+static int is_second_half_of_fft32(int i, int n)
+{
+    if (n <= 32)
+        return i >= 16;
+    else if (i < n/2)
+        return is_second_half_of_fft32(i, n/2);
+    else if (i < 3*n/4)
+        return is_second_half_of_fft32(i - n/2, n/4);
+    else
+        return is_second_half_of_fft32(i - 3*n/4, n/4);
+}
+
+static av_cold void fft_perm_avx(FFTContext *s)
+{
+    int i;
+    int n = 1 << s->nbits;
+
+    for (i = 0; i < n; i += 16) {
+        int k;
+        if (is_second_half_of_fft32(i, n)) {
+            for (k = 0; k < 16; k++)
+                s->revtab[-split_radix_permutation(i + k, n, s->inverse) & (n - 1)] =
+                    i + avx_tab[k];
+
+        } else {
+            for (k = 0; k < 16; k++) {
+                int j = i + k;
+                j = (j & ~7) | ((j >> 1) & 3) | ((j << 2) & 4);
+                s->revtab[-split_radix_permutation(i + k, n, s->inverse) & (n - 1)] = j;
+            }
+        }
+    }
+}
+
+av_cold int ff_fft_init(FFTContext *s, int nbits, int inverse)
+{
+    int i, j, n;
+
+    if (nbits < 2 || nbits > 16)
+        goto fail;
+    s->nbits = nbits;
+    n = 1 << nbits;
+
+    s->revtab = av_malloc(n * sizeof(uint16_t));
+    if (!s->revtab)
+        goto fail;
+    s->tmp_buf = av_malloc(n * sizeof(FFTComplex));
+    if (!s->tmp_buf)
+        goto fail;
+    s->inverse = inverse;
+    s->fft_permutation = FF_FFT_PERM_DEFAULT;
+
+    s->fft_permute = fft_permute_c;
+    s->fft_calc    = fft_calc_c;
+#if CONFIG_MDCT
+    s->imdct_calc  = ff_imdct_calc_c;
+    s->imdct_half  = ff_imdct_half_c;
+    s->mdct_calc   = ff_mdct_calc_c;
+#endif
+
+#if FFT_FLOAT
+    if (ARCH_AARCH64) ff_fft_init_aarch64(s);
+    if (ARCH_ARM)     ff_fft_init_arm(s);
+    if (ARCH_PPC)     ff_fft_init_ppc(s);
+    if (ARCH_X86)     ff_fft_init_x86(s);
+    if (CONFIG_MDCT)  s->mdct_calcw = s->mdct_calc;
+#else
+    if (CONFIG_MDCT)  s->mdct_calcw = ff_mdct_calcw_c;
+    if (ARCH_ARM)     ff_fft_fixed_init_arm(s);
+#endif
+
+    for(j=4; j<=nbits; j++) {
+        ff_init_ff_cos_tabs(j);
+    }
+
+    if (s->fft_permutation == FF_FFT_PERM_AVX) {
+        fft_perm_avx(s);
+    } else {
+        for(i=0; i<n; i++) {
+            int j = i;
+            if (s->fft_permutation == FF_FFT_PERM_SWAP_LSBS)
+                j = (j&~3) | ((j>>1)&1) | ((j<<1)&2);
+            s->revtab[-split_radix_permutation(i, n, s->inverse) & (n-1)] = j;
+        }
+    }
+
+    return 0;
+ fail:
+    av_freep(&s->revtab);
+    av_freep(&s->tmp_buf);
+    return -1;
+}
+
+static void fft_permute_c(FFTContext *s, FFTComplex *z)
+{
+    int j, np;
+    const uint16_t *revtab = s->revtab;
+    np = 1 << s->nbits;
+    /* TODO: handle split-radix permute in a more optimal way, probably in-place */
+    for(j=0;j<np;j++) s->tmp_buf[revtab[j]] = z[j];
+    memcpy(z, s->tmp_buf, np * sizeof(FFTComplex));
+}
+
+av_cold void ff_fft_end(FFTContext *s)
+{
+    av_freep(&s->revtab);
+    av_freep(&s->tmp_buf);
+}
+
+#define BUTTERFLIES(a0,a1,a2,a3) {\
+    BF(t3, t5, t5, t1);\
+    BF(a2.re, a0.re, a0.re, t5);\
+    BF(a3.im, a1.im, a1.im, t3);\
+    BF(t4, t6, t2, t6);\
+    BF(a3.re, a1.re, a1.re, t4);\
+    BF(a2.im, a0.im, a0.im, t6);\
+}
+
+// force loading all the inputs before storing any.
+// this is slightly slower for small data, but avoids store->load aliasing
+// for addresses separated by large powers of 2.
+#define BUTTERFLIES_BIG(a0,a1,a2,a3) {\
+    FFTSample r0=a0.re, i0=a0.im, r1=a1.re, i1=a1.im;\
+    BF(t3, t5, t5, t1);\
+    BF(a2.re, a0.re, r0, t5);\
+    BF(a3.im, a1.im, i1, t3);\
+    BF(t4, t6, t2, t6);\
+    BF(a3.re, a1.re, r1, t4);\
+    BF(a2.im, a0.im, i0, t6);\
+}
+
+#define TRANSFORM(a0,a1,a2,a3,wre,wim) {\
+    CMUL(t1, t2, a2.re, a2.im, wre, -wim);\
+    CMUL(t5, t6, a3.re, a3.im, wre,  wim);\
+    BUTTERFLIES(a0,a1,a2,a3)\
+}
+
+#define TRANSFORM_ZERO(a0,a1,a2,a3) {\
+    t1 = a2.re;\
+    t2 = a2.im;\
+    t5 = a3.re;\
+    t6 = a3.im;\
+    BUTTERFLIES(a0,a1,a2,a3)\
+}
+
+/* z[0...8n-1], w[1...2n-1] */
+#define PASS(name)\
+static void name(FFTComplex *z, const FFTSample *wre, unsigned int n)\
+{\
+    FFTDouble t1, t2, t3, t4, t5, t6;\
+    int o1 = 2*n;\
+    int o2 = 4*n;\
+    int o3 = 6*n;\
+    const FFTSample *wim = wre+o1;\
+    n--;\
+\
+    TRANSFORM_ZERO(z[0],z[o1],z[o2],z[o3]);\
+    TRANSFORM(z[1],z[o1+1],z[o2+1],z[o3+1],wre[1],wim[-1]);\
+    do {\
+        z += 2;\
+        wre += 2;\
+        wim -= 2;\
+        TRANSFORM(z[0],z[o1],z[o2],z[o3],wre[0],wim[0]);\
+        TRANSFORM(z[1],z[o1+1],z[o2+1],z[o3+1],wre[1],wim[-1]);\
+    } while(--n);\
+}
+
+PASS(pass)
+#undef BUTTERFLIES
+#define BUTTERFLIES BUTTERFLIES_BIG
+PASS(pass_big)
+
+#define DECL_FFT(n,n2,n4)\
+static void fft##n(FFTComplex *z)\
+{\
+    fft##n2(z);\
+    fft##n4(z+n4*2);\
+    fft##n4(z+n4*3);\
+    pass(z,FFT_NAME(ff_cos_##n),n4/2);\
+}
+
+static void fft4(FFTComplex *z)
+{
+    FFTDouble t1, t2, t3, t4, t5, t6, t7, t8;
+
+    BF(t3, t1, z[0].re, z[1].re);
+    BF(t8, t6, z[3].re, z[2].re);
+    BF(z[2].re, z[0].re, t1, t6);
+    BF(t4, t2, z[0].im, z[1].im);
+    BF(t7, t5, z[2].im, z[3].im);
+    BF(z[3].im, z[1].im, t4, t8);
+    BF(z[3].re, z[1].re, t3, t7);
+    BF(z[2].im, z[0].im, t2, t5);
+}
+
+static void fft8(FFTComplex *z)
+{
+    FFTDouble t1, t2, t3, t4, t5, t6;
+
+    fft4(z);
+
+    BF(t1, z[5].re, z[4].re, -z[5].re);
+    BF(t2, z[5].im, z[4].im, -z[5].im);
+    BF(t5, z[7].re, z[6].re, -z[7].re);
+    BF(t6, z[7].im, z[6].im, -z[7].im);
+
+    BUTTERFLIES(z[0],z[2],z[4],z[6]);
+    TRANSFORM(z[1],z[3],z[5],z[7],sqrthalf,sqrthalf);
+}
+
+#if !CONFIG_SMALL
+static void fft16(FFTComplex *z)
+{
+    FFTDouble t1, t2, t3, t4, t5, t6;
+    FFTSample cos_16_1 = FFT_NAME(ff_cos_16)[1];
+    FFTSample cos_16_3 = FFT_NAME(ff_cos_16)[3];
+
+    fft8(z);
+    fft4(z+8);
+    fft4(z+12);
+
+    TRANSFORM_ZERO(z[0],z[4],z[8],z[12]);
+    TRANSFORM(z[2],z[6],z[10],z[14],sqrthalf,sqrthalf);
+    TRANSFORM(z[1],z[5],z[9],z[13],cos_16_1,cos_16_3);
+    TRANSFORM(z[3],z[7],z[11],z[15],cos_16_3,cos_16_1);
+}
+#else
+DECL_FFT(16,8,4)
+#endif
+DECL_FFT(32,16,8)
+DECL_FFT(64,32,16)
+DECL_FFT(128,64,32)
+DECL_FFT(256,128,64)
+DECL_FFT(512,256,128)
+#if !CONFIG_SMALL
+#define pass pass_big
+#endif
+DECL_FFT(1024,512,256)
+DECL_FFT(2048,1024,512)
+DECL_FFT(4096,2048,1024)
+DECL_FFT(8192,4096,2048)
+DECL_FFT(16384,8192,4096)
+DECL_FFT(32768,16384,8192)
+DECL_FFT(65536,32768,16384)
+
+static void (* const fft_dispatch[])(FFTComplex*) = {
+    fft4, fft8, fft16, fft32, fft64, fft128, fft256, fft512, fft1024,
+    fft2048, fft4096, fft8192, fft16384, fft32768, fft65536,
+};
+
+static void fft_calc_c(FFTContext *s, FFTComplex *z)
+{
+    fft_dispatch[s->nbits-2](z);
+}
diff --git a/media/libav/libavcodec/mathops.h b/media/libav/libavcodec/mathops.h
new file mode 100644
index 000000000..7af13e19e
--- /dev/null
+++ b/media/libav/libavcodec/mathops.h
@@ -0,0 +1,232 @@
+/*
+ * simple math operations
+ * Copyright (c) 2001, 2002 Fabrice Bellard
+ * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef AVCODEC_MATHOPS_H
+#define AVCODEC_MATHOPS_H
+
+#include <stdint.h>
+
+#include "libavutil/common.h"
+#include "config.h"
+
+#define MAX_NEG_CROP 1024
+
+extern const uint32_t ff_inverse[257];
+extern const uint8_t  ff_reverse[256];
+extern const uint8_t ff_sqrt_tab[256];
+extern const uint8_t ff_crop_tab[256 + 2 * MAX_NEG_CROP];
+extern const uint8_t ff_zigzag_direct[64];
+
+#if   ARCH_ARM
+#   include "arm/mathops.h"
+#elif ARCH_AVR32
+#   include "avr32/mathops.h"
+#elif ARCH_BFIN
+#   include "bfin/mathops.h"
+#elif ARCH_MIPS
+#   include "mips/mathops.h"
+#elif ARCH_PPC
+#   include "ppc/mathops.h"
+#elif ARCH_X86
+#   include "x86/mathops.h"
+#endif
+
+/* generic implementation */
+
+#ifndef MUL64
+#   define MUL64(a,b) ((int64_t)(a) * (int64_t)(b))
+#endif
+
+#ifndef MULL
+#   define MULL(a,b,s) (MUL64(a, b) >> (s))
+#endif
+
+#ifndef MULH
+static av_always_inline int MULH(int a, int b){
+    return MUL64(a, b) >> 32;
+}
+#endif
+
+#ifndef UMULH
+static av_always_inline unsigned UMULH(unsigned a, unsigned b){
+    return ((uint64_t)(a) * (uint64_t)(b))>>32;
+}
+#endif
+
+#ifndef MAC64
+#   define MAC64(d, a, b) ((d) += MUL64(a, b))
+#endif
+
+#ifndef MLS64
+#   define MLS64(d, a, b) ((d) -= MUL64(a, b))
+#endif
+
+/* signed 16x16 -> 32 multiply add accumulate */
+#ifndef MAC16
+#   define MAC16(rt, ra, rb) rt += (ra) * (rb)
+#endif
+
+/* signed 16x16 -> 32 multiply */
+#ifndef MUL16
+#   define MUL16(ra, rb) ((ra) * (rb))
+#endif
+
+#ifndef MLS16
+#   define MLS16(rt, ra, rb) ((rt) -= (ra) * (rb))
+#endif
+
+/* median of 3 */
+#ifndef mid_pred
+#define mid_pred mid_pred
+static inline av_const int mid_pred(int a, int b, int c)
+{
+#if 0
+    int t= (a-b)&((a-b)>>31);
+    a-=t;
+    b+=t;
+    b-= (b-c)&((b-c)>>31);
+    b+= (a-b)&((a-b)>>31);
+
+    return b;
+#else
+    if(a>b){
+        if(c>b){
+            if(c>a) b=a;
+            else    b=c;
+        }
+    }else{
+        if(b>c){
+            if(c>a) b=c;
+            else    b=a;
+        }
+    }
+    return b;
+#endif
+}
+#endif
+
+#ifndef sign_extend
+static inline av_const int sign_extend(int val, unsigned bits)
+{
+    unsigned shift = 8 * sizeof(int) - bits;
+    union { unsigned u; int s; } v = { (unsigned) val << shift };
+    return v.s >> shift;
+}
+#endif
+
+#ifndef zero_extend
+static inline av_const unsigned zero_extend(unsigned val, unsigned bits)
+{
+    return (val << ((8 * sizeof(int)) - bits)) >> ((8 * sizeof(int)) - bits);
+}
+#endif
+
+#ifndef COPY3_IF_LT
+#define COPY3_IF_LT(x, y, a, b, c, d)\
+if ((y) < (x)) {\
+    (x) = (y);\
+    (a) = (b);\
+    (c) = (d);\
+}
+#endif
+
+#ifndef MASK_ABS
+#define MASK_ABS(mask, level) do {              \
+        mask  = level >> 31;                    \
+        level = (level ^ mask) - mask;          \
+    } while (0)
+#endif
+
+#ifndef NEG_SSR32
+#   define NEG_SSR32(a,s) ((( int32_t)(a))>>(32-(s)))
+#endif
+
+#ifndef NEG_USR32
+#   define NEG_USR32(a,s) (((uint32_t)(a))>>(32-(s)))
+#endif
+
+#if HAVE_BIGENDIAN
+# ifndef PACK_2U8
+#   define PACK_2U8(a,b)     (((a) <<  8) | (b))
+# endif
+# ifndef PACK_4U8
+#   define PACK_4U8(a,b,c,d) (((a) << 24) | ((b) << 16) | ((c) << 8) | (d))
+# endif
+# ifndef PACK_2U16
+#   define PACK_2U16(a,b)    (((a) << 16) | (b))
+# endif
+#else
+# ifndef PACK_2U8
+#   define PACK_2U8(a,b)     (((b) <<  8) | (a))
+# endif
+# ifndef PACK_4U2
+#   define PACK_4U8(a,b,c,d) (((d) << 24) | ((c) << 16) | ((b) << 8) | (a))
+# endif
+# ifndef PACK_2U16
+#   define PACK_2U16(a,b)    (((b) << 16) | (a))
+# endif
+#endif
+
+#ifndef PACK_2S8
+#   define PACK_2S8(a,b)     PACK_2U8((a)&255, (b)&255)
+#endif
+#ifndef PACK_4S8
+#   define PACK_4S8(a,b,c,d) PACK_4U8((a)&255, (b)&255, (c)&255, (d)&255)
+#endif
+#ifndef PACK_2S16
+#   define PACK_2S16(a,b)    PACK_2U16((a)&0xffff, (b)&0xffff)
+#endif
+
+#ifndef FASTDIV
+#   define FASTDIV(a,b) ((uint32_t)((((uint64_t)a) * ff_inverse[b]) >> 32))
+#endif /* FASTDIV */
+
+static inline av_const unsigned int ff_sqrt(unsigned int a)
+{
+    unsigned int b;
+
+    if (a < 255) return (ff_sqrt_tab[a + 1] - 1) >> 4;
+    else if (a < (1 << 12)) b = ff_sqrt_tab[a >> 4] >> 2;
+#if !CONFIG_SMALL
+    else if (a < (1 << 14)) b = ff_sqrt_tab[a >> 6] >> 1;
+    else if (a < (1 << 16)) b = ff_sqrt_tab[a >> 8]   ;
+#endif
+    else {
+        int s = av_log2_16bit(a >> 16) >> 1;
+        unsigned int c = a >> (s + 2);
+        b = ff_sqrt_tab[c >> (s + 8)];
+        b = FASTDIV(c,b) + (b << s);
+    }
+
+    return b - (a < b * b);
+}
+
+static inline int8_t ff_u8_to_s8(uint8_t a)
+{
+    union {
+        uint8_t u8;
+        int8_t  s8;
+    } b;
+    b.u8 = a;
+    return b.s8;
+}
+
+#endif /* AVCODEC_MATHOPS_H */
diff --git a/media/libav/libavcodec/rdft.c b/media/libav/libavcodec/rdft.c
new file mode 100644
index 000000000..54cf14aa2
--- /dev/null
+++ b/media/libav/libavcodec/rdft.c
@@ -0,0 +1,133 @@
+/*
+ * (I)RDFT transforms
+ * Copyright (c) 2009 Alex Converse <alex dot converse at gmail dot com>
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include <stdlib.h>
+#include <math.h>
+#include "libavutil/mathematics.h"
+#include "rdft.h"
+
+/**
+ * @file
+ * (Inverse) Real Discrete Fourier Transforms.
+ */
+
+/* sin(2*pi*x/n) for 0<=x<n/4, followed by n/2<=x<3n/4 */
+#if !CONFIG_HARDCODED_TABLES
+SINTABLE(16);
+SINTABLE(32);
+SINTABLE(64);
+SINTABLE(128);
+SINTABLE(256);
+SINTABLE(512);
+SINTABLE(1024);
+SINTABLE(2048);
+SINTABLE(4096);
+SINTABLE(8192);
+SINTABLE(16384);
+SINTABLE(32768);
+SINTABLE(65536);
+#endif
+static SINTABLE_CONST FFTSample * const ff_sin_tabs[] = {
+    NULL, NULL, NULL, NULL,
+    ff_sin_16, ff_sin_32, ff_sin_64, ff_sin_128, ff_sin_256, ff_sin_512, ff_sin_1024,
+    ff_sin_2048, ff_sin_4096, ff_sin_8192, ff_sin_16384, ff_sin_32768, ff_sin_65536,
+};
+
+/** Map one real FFT into two parallel real even and odd FFTs. Then interleave
+ * the two real FFTs into one complex FFT. Unmangle the results.
+ * ref: http://www.engineeringproductivitytools.com/stuff/T0001/PT10.HTM
+ */
+static void rdft_calc_c(RDFTContext *s, FFTSample *data)
+{
+    int i, i1, i2;
+    FFTComplex ev, od;
+    const int n = 1 << s->nbits;
+    const float k1 = 0.5;
+    const float k2 = 0.5 - s->inverse;
+    const FFTSample *tcos = s->tcos;
+    const FFTSample *tsin = s->tsin;
+
+    if (!s->inverse) {
+        s->fft.fft_permute(&s->fft, (FFTComplex*)data);
+        s->fft.fft_calc(&s->fft, (FFTComplex*)data);
+    }
+    /* i=0 is a special case because of packing, the DC term is real, so we
+       are going to throw the N/2 term (also real) in with it. */
+    ev.re = data[0];
+    data[0] = ev.re+data[1];
+    data[1] = ev.re-data[1];
+    for (i = 1; i < (n>>2); i++) {
+        i1 = 2*i;
+        i2 = n-i1;
+        /* Separate even and odd FFTs */
+        ev.re =  k1*(data[i1  ]+data[i2  ]);
+        od.im = -k2*(data[i1  ]-data[i2  ]);
+        ev.im =  k1*(data[i1+1]-data[i2+1]);
+        od.re =  k2*(data[i1+1]+data[i2+1]);
+        /* Apply twiddle factors to the odd FFT and add to the even FFT */
+        data[i1  ] =  ev.re + od.re*tcos[i] - od.im*tsin[i];
+        data[i1+1] =  ev.im + od.im*tcos[i] + od.re*tsin[i];
+        data[i2  ] =  ev.re - od.re*tcos[i] + od.im*tsin[i];
+        data[i2+1] = -ev.im + od.im*tcos[i] + od.re*tsin[i];
+    }
+    data[2*i+1]=s->sign_convention*data[2*i+1];
+    if (s->inverse) {
+        data[0] *= k1;
+        data[1] *= k1;
+        s->fft.fft_permute(&s->fft, (FFTComplex*)data);
+        s->fft.fft_calc(&s->fft, (FFTComplex*)data);
+    }
+}
+
+av_cold int ff_rdft_init(RDFTContext *s, int nbits, enum RDFTransformType trans)
+{
+    int n = 1 << nbits;
+    int i;
+    const double theta = (trans == DFT_R2C || trans == DFT_C2R ? -1 : 1)*2*M_PI/n;
+
+    s->nbits           = nbits;
+    s->inverse         = trans == IDFT_C2R || trans == DFT_C2R;
+    s->sign_convention = trans == IDFT_R2C || trans == DFT_C2R ? 1 : -1;
+
+    if (nbits < 4 || nbits > 16)
+        return -1;
+
+    if (ff_fft_init(&s->fft, nbits-1, trans == IDFT_C2R || trans == IDFT_R2C) < 0)
+        return -1;
+
+    ff_init_ff_cos_tabs(nbits);
+    s->tcos = ff_cos_tabs[nbits];
+    s->tsin = ff_sin_tabs[nbits]+(trans == DFT_R2C || trans == DFT_C2R)*(n>>2);
+#if !CONFIG_HARDCODED_TABLES
+    for (i = 0; i < (n>>2); i++) {
+        s->tsin[i] = sin(i*theta);
+    }
+#endif
+    s->rdft_calc   = rdft_calc_c;
+
+    if (ARCH_ARM) ff_rdft_init_arm(s);
+
+    return 0;
+}
+
+av_cold void ff_rdft_end(RDFTContext *s)
+{
+    ff_fft_end(&s->fft);
+}
diff --git a/media/libav/libavcodec/rdft.h b/media/libav/libavcodec/rdft.h
new file mode 100644
index 000000000..8ff620fb5
--- /dev/null
+++ b/media/libav/libavcodec/rdft.h
@@ -0,0 +1,74 @@
+/*
+ * (I)RDFT transforms
+ * Copyright (c) 2009 Alex Converse <alex dot converse at gmail dot com>
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_RDFT_H
+#define AVCODEC_RDFT_H
+
+#include "config.h"
+#include "fft.h"
+
+#if CONFIG_HARDCODED_TABLES
+#   define SINTABLE_CONST const
+#else
+#   define SINTABLE_CONST
+#endif
+
+#define SINTABLE(size) \
+    SINTABLE_CONST DECLARE_ALIGNED(16, FFTSample, ff_sin_##size)[size/2]
+
+extern SINTABLE(16);
+extern SINTABLE(32);
+extern SINTABLE(64);
+extern SINTABLE(128);
+extern SINTABLE(256);
+extern SINTABLE(512);
+extern SINTABLE(1024);
+extern SINTABLE(2048);
+extern SINTABLE(4096);
+extern SINTABLE(8192);
+extern SINTABLE(16384);
+extern SINTABLE(32768);
+extern SINTABLE(65536);
+
+struct RDFTContext {
+    int nbits;
+    int inverse;
+    int sign_convention;
+
+    /* pre/post rotation tables */
+    const FFTSample *tcos;
+    SINTABLE_CONST FFTSample *tsin;
+    FFTContext fft;
+    void (*rdft_calc)(struct RDFTContext *s, FFTSample *z);
+};
+
+/**
+ * Set up a real FFT.
+ * @param nbits           log2 of the length of the input array
+ * @param trans           the type of transform
+ */
+int ff_rdft_init(RDFTContext *s, int nbits, enum RDFTransformType trans);
+void ff_rdft_end(RDFTContext *s);
+
+void ff_rdft_init_arm(RDFTContext *s);
+
+
+#endif /* AVCODEC_RDFT_H */
diff --git a/media/libav/libavcodec/x86/fft.asm b/media/libav/libavcodec/x86/fft.asm
new file mode 100644
index 000000000..e4744a3b6
--- /dev/null
+++ b/media/libav/libavcodec/x86/fft.asm
@@ -0,0 +1,1083 @@
+;******************************************************************************
+;* FFT transform with SSE/3DNow optimizations
+;* Copyright (c) 2008 Loren Merritt
+;* Copyright (c) 2011 Vitor Sessak
+;*
+;* This algorithm (though not any of the implementation details) is
+;* based on libdjbfft by D. J. Bernstein.
+;*
+;* This file is part of Libav.
+;*
+;* Libav 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.
+;*
+;* Libav 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 Libav; if not, write to the Free Software
+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;******************************************************************************
+
+; These functions are not individually interchangeable with the C versions.
+; While C takes arrays of FFTComplex, SSE/3DNow leave intermediate results
+; in blocks as conventient to the vector size.
+; i.e. {4x real, 4x imaginary, 4x real, ...} (or 2x respectively)
+
+%include "libavutil/x86/x86util.asm"
+
+%if ARCH_X86_64
+%define pointer resq
+%else
+%define pointer resd
+%endif
+
+struc FFTContext
+    .nbits:    resd 1
+    .reverse:  resd 1
+    .revtab:   pointer 1
+    .tmpbuf:   pointer 1
+    .mdctsize: resd 1
+    .mdctbits: resd 1
+    .tcos:     pointer 1
+    .tsin:     pointer 1
+    .fftperm:  pointer 1
+    .fftcalc:  pointer 1
+    .imdctcalc:pointer 1
+    .imdcthalf:pointer 1
+endstruc
+
+SECTION_RODATA
+
+%define M_SQRT1_2 0.70710678118654752440
+%define M_COS_PI_1_8 0.923879532511287
+%define M_COS_PI_3_8 0.38268343236509
+
+align 32
+ps_cos16_1: dd 1.0, M_COS_PI_1_8, M_SQRT1_2, M_COS_PI_3_8, 1.0, M_COS_PI_1_8, M_SQRT1_2, M_COS_PI_3_8
+ps_cos16_2: dd 0, M_COS_PI_3_8, M_SQRT1_2, M_COS_PI_1_8, 0, -M_COS_PI_3_8, -M_SQRT1_2, -M_COS_PI_1_8
+
+ps_root2: times 8 dd M_SQRT1_2
+ps_root2mppm: dd -M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, -M_SQRT1_2, -M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, -M_SQRT1_2
+ps_p1p1m1p1: dd 0, 0, 1<<31, 0, 0, 0, 1<<31, 0
+
+perm1: dd 0x00, 0x02, 0x03, 0x01, 0x03, 0x00, 0x02, 0x01
+perm2: dd 0x00, 0x01, 0x02, 0x03, 0x01, 0x00, 0x02, 0x03
+ps_p1p1m1p1root2: dd 1.0, 1.0, -1.0, 1.0, M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, M_SQRT1_2
+ps_m1m1p1m1p1m1m1m1: dd 1<<31, 1<<31, 0, 1<<31, 0, 1<<31, 1<<31, 1<<31
+ps_m1m1m1m1: times 4 dd 1<<31
+ps_m1p1: dd 1<<31, 0
+
+%assign i 16
+%rep 13
+cextern cos_ %+ i
+%assign i i<<1
+%endrep
+
+%if ARCH_X86_64
+    %define pointer dq
+%else
+    %define pointer dd
+%endif
+
+%macro IF0 1+
+%endmacro
+%macro IF1 1+
+    %1
+%endmacro
+
+SECTION_TEXT
+
+%macro T2_3DNOW 4 ; z0, z1, mem0, mem1
+    mova     %1, %3
+    mova     %2, %1
+    pfadd    %1, %4
+    pfsub    %2, %4
+%endmacro
+
+%macro T4_3DNOW 6 ; z0, z1, z2, z3, tmp0, tmp1
+    mova     %5, %3
+    pfsub    %3, %4
+    pfadd    %5, %4 ; {t6,t5}
+    pxor     %3, [ps_m1p1] ; {t8,t7}
+    mova     %6, %1
+    movd [r0+12], %3
+    punpckhdq %3, [r0+8]
+    pfadd    %1, %5 ; {r0,i0}
+    pfsub    %6, %5 ; {r2,i2}
+    mova     %4, %2
+    pfadd    %2, %3 ; {r1,i1}
+    pfsub    %4, %3 ; {r3,i3}
+    SWAP     %3, %6
+%endmacro
+
+;  in: %1 = {r0,i0,r2,i2,r4,i4,r6,i6}
+;      %2 = {r1,i1,r3,i3,r5,i5,r7,i7}
+;      %3, %4, %5 tmp
+; out: %1 = {r0,r1,r2,r3,i0,i1,i2,i3}
+;      %2 = {r4,r5,r6,r7,i4,i5,i6,i7}
+%macro T8_AVX 5
+    vsubps     %5, %1, %2       ; v  = %1 - %2
+    vaddps     %3, %1, %2       ; w  = %1 + %2
+    vmulps     %2, %5, [ps_p1p1m1p1root2]  ; v *= vals1
+    vpermilps  %2, %2, [perm1]
+    vblendps   %1, %2, %3, 0x33 ; q = {w1,w2,v4,v2,w5,w6,v7,v6}
+    vshufps    %5, %3, %2, 0x4e ; r = {w3,w4,v1,v3,w7,w8,v8,v5}
+    vsubps     %4, %5, %1       ; s = r - q
+    vaddps     %1, %5, %1       ; u = r + q
+    vpermilps  %1, %1, [perm2]  ; k  = {u1,u2,u3,u4,u6,u5,u7,u8}
+    vshufps    %5, %4, %1, 0xbb
+    vshufps    %3, %4, %1, 0xee
+    vperm2f128 %3, %3, %5, 0x13
+    vxorps     %4, %4, [ps_m1m1p1m1p1m1m1m1]  ; s *= {1,1,-1,-1,1,-1,-1,-1}
+    vshufps    %2, %1, %4, 0xdd
+    vshufps    %1, %1, %4, 0x88
+    vperm2f128 %4, %2, %1, 0x02 ; v  = {k1,k3,s1,s3,k2,k4,s2,s4}
+    vperm2f128 %1, %1, %2, 0x13 ; w  = {k6,k8,s6,s8,k5,k7,s5,s7}
+    vsubps     %5, %1, %3
+    vblendps   %1, %5, %1, 0x55 ; w -= {0,s7,0,k7,0,s8,0,k8}
+    vsubps     %2, %4, %1       ; %2 = v - w
+    vaddps     %1, %4, %1       ; %1 = v + w
+%endmacro
+
+; In SSE mode do one fft4 transforms
+; in:  %1={r0,i0,r2,i2} %2={r1,i1,r3,i3}
+; out: %1={r0,r1,r2,r3} %2={i0,i1,i2,i3}
+;
+; In AVX mode do two fft4 transforms
+; in:  %1={r0,i0,r2,i2,r4,i4,r6,i6} %2={r1,i1,r3,i3,r5,i5,r7,i7}
+; out: %1={r0,r1,r2,r3,r4,r5,r6,r7} %2={i0,i1,i2,i3,i4,i5,i6,i7}
+%macro T4_SSE 3
+    subps    %3, %1, %2       ; {t3,t4,-t8,t7}
+    addps    %1, %1, %2       ; {t1,t2,t6,t5}
+    xorps    %3, %3, [ps_p1p1m1p1]
+    shufps   %2, %1, %3, 0xbe ; {t6,t5,t7,t8}
+    shufps   %1, %1, %3, 0x44 ; {t1,t2,t3,t4}
+    subps    %3, %1, %2       ; {r2,i2,r3,i3}
+    addps    %1, %1, %2       ; {r0,i0,r1,i1}
+    shufps   %2, %1, %3, 0xdd ; {i0,i1,i2,i3}
+    shufps   %1, %1, %3, 0x88 ; {r0,r1,r2,r3}
+%endmacro
+
+; In SSE mode do one FFT8
+; in:  %1={r0,r1,r2,r3} %2={i0,i1,i2,i3} %3={r4,i4,r6,i6} %4={r5,i5,r7,i7}
+; out: %1={r0,r1,r2,r3} %2={i0,i1,i2,i3} %1={r4,r5,r6,r7} %2={i4,i5,i6,i7}
+;
+; In AVX mode do two FFT8
+; in:  %1={r0,i0,r2,i2,r8, i8, r10,i10} %2={r1,i1,r3,i3,r9, i9, r11,i11}
+;      %3={r4,i4,r6,i6,r12,i12,r14,i14} %4={r5,i5,r7,i7,r13,i13,r15,i15}
+; out: %1={r0,r1,r2,r3,r8, r9, r10,r11} %2={i0,i1,i2,i3,i8, i9, i10,i11}
+;      %3={r4,r5,r6,r7,r12,r13,r14,r15} %4={i4,i5,i6,i7,i12,i13,i14,i15}
+%macro T8_SSE 6
+    addps    %6, %3, %4       ; {t1,t2,t3,t4}
+    subps    %3, %3, %4       ; {r5,i5,r7,i7}
+    shufps   %4, %3, %3, 0xb1 ; {i5,r5,i7,r7}
+    mulps    %3, %3, [ps_root2mppm] ; {-r5,i5,r7,-i7}
+    mulps    %4, %4, [ps_root2]
+    addps    %3, %3, %4       ; {t8,t7,ta,t9}
+    shufps   %4, %6, %3, 0x9c ; {t1,t4,t7,ta}
+    shufps   %6, %6, %3, 0x36 ; {t3,t2,t9,t8}
+    subps    %3, %6, %4       ; {t6,t5,tc,tb}
+    addps    %6, %6, %4       ; {t1,t2,t9,ta}
+    shufps   %5, %6, %3, 0x8d ; {t2,ta,t6,tc}
+    shufps   %6, %6, %3, 0xd8 ; {t1,t9,t5,tb}
+    subps    %3, %1, %6       ; {r4,r5,r6,r7}
+    addps    %1, %1, %6       ; {r0,r1,r2,r3}
+    subps    %4, %2, %5       ; {i4,i5,i6,i7}
+    addps    %2, %2, %5       ; {i0,i1,i2,i3}
+%endmacro
+
+; scheduled for cpu-bound sizes
+%macro PASS_SMALL 3 ; (to load m4-m7), wre, wim
+IF%1 mova    m4, Z(4)
+IF%1 mova    m5, Z(5)
+    mova     m0, %2 ; wre
+    mova     m1, %3 ; wim
+    mulps    m2, m4, m0 ; r2*wre
+IF%1 mova    m6, Z2(6)
+    mulps    m3, m5, m1 ; i2*wim
+IF%1 mova    m7, Z2(7)
+    mulps    m4, m4, m1 ; r2*wim
+    mulps    m5, m5, m0 ; i2*wre
+    addps    m2, m2, m3 ; r2*wre + i2*wim
+    mulps    m3, m1, m7 ; i3*wim
+    subps    m5, m5, m4 ; i2*wre - r2*wim
+    mulps    m1, m1, m6 ; r3*wim
+    mulps    m4, m0, m6 ; r3*wre
+    mulps    m0, m0, m7 ; i3*wre
+    subps    m4, m4, m3 ; r3*wre - i3*wim
+    mova     m3, Z(0)
+    addps    m0, m0, m1 ; i3*wre + r3*wim
+    subps    m1, m4, m2 ; t3
+    addps    m4, m4, m2 ; t5
+    subps    m3, m3, m4 ; r2
+    addps    m4, m4, Z(0) ; r0
+    mova     m6, Z(2)
+    mova   Z(4), m3
+    mova   Z(0), m4
+    subps    m3, m5, m0 ; t4
+    subps    m4, m6, m3 ; r3
+    addps    m3, m3, m6 ; r1
+    mova  Z2(6), m4
+    mova   Z(2), m3
+    mova     m2, Z(3)
+    addps    m3, m5, m0 ; t6
+    subps    m2, m2, m1 ; i3
+    mova     m7, Z(1)
+    addps    m1, m1, Z(3) ; i1
+    mova  Z2(7), m2
+    mova   Z(3), m1
+    subps    m4, m7, m3 ; i2
+    addps    m3, m3, m7 ; i0
+    mova   Z(5), m4
+    mova   Z(1), m3
+%endmacro
+
+; scheduled to avoid store->load aliasing
+%macro PASS_BIG 1 ; (!interleave)
+    mova     m4, Z(4) ; r2
+    mova     m5, Z(5) ; i2
+    mova     m0, [wq] ; wre
+    mova     m1, [wq+o1q] ; wim
+    mulps    m2, m4, m0 ; r2*wre
+    mova     m6, Z2(6) ; r3
+    mulps    m3, m5, m1 ; i2*wim
+    mova     m7, Z2(7) ; i3
+    mulps    m4, m4, m1 ; r2*wim
+    mulps    m5, m5, m0 ; i2*wre
+    addps    m2, m2, m3 ; r2*wre + i2*wim
+    mulps    m3, m1, m7 ; i3*wim
+    mulps    m1, m1, m6 ; r3*wim
+    subps    m5, m5, m4 ; i2*wre - r2*wim
+    mulps    m4, m0, m6 ; r3*wre
+    mulps    m0, m0, m7 ; i3*wre
+    subps    m4, m4, m3 ; r3*wre - i3*wim
+    mova     m3, Z(0)
+    addps    m0, m0, m1 ; i3*wre + r3*wim
+    subps    m1, m4, m2 ; t3
+    addps    m4, m4, m2 ; t5
+    subps    m3, m3, m4 ; r2
+    addps    m4, m4, Z(0) ; r0
+    mova     m6, Z(2)
+    mova   Z(4), m3
+    mova   Z(0), m4
+    subps    m3, m5, m0 ; t4
+    subps    m4, m6, m3 ; r3
+    addps    m3, m3, m6 ; r1
+IF%1 mova Z2(6), m4
+IF%1 mova  Z(2), m3
+    mova     m2, Z(3)
+    addps    m5, m5, m0 ; t6
+    subps    m2, m2, m1 ; i3
+    mova     m7, Z(1)
+    addps    m1, m1, Z(3) ; i1
+IF%1 mova Z2(7), m2
+IF%1 mova  Z(3), m1
+    subps    m6, m7, m5 ; i2
+    addps    m5, m5, m7 ; i0
+IF%1 mova  Z(5), m6
+IF%1 mova  Z(1), m5
+%if %1==0
+    INTERL m1, m3, m7, Z, 2
+    INTERL m2, m4, m0, Z2, 6
+
+    mova     m1, Z(0)
+    mova     m2, Z(4)
+
+    INTERL m5, m1, m3, Z, 0
+    INTERL m6, m2, m7, Z, 4
+%endif
+%endmacro
+
+%macro PUNPCK 3
+    mova      %3, %1
+    punpckldq %1, %2
+    punpckhdq %3, %2
+%endmacro
+
+%define Z(x) [r0+mmsize*x]
+%define Z2(x) [r0+mmsize*x]
+%define ZH(x) [r0+mmsize*x+mmsize/2]
+
+INIT_YMM avx
+
+align 16
+fft8_avx:
+    mova      m0, Z(0)
+    mova      m1, Z(1)
+    T8_AVX    m0, m1, m2, m3, m4
+    mova      Z(0), m0
+    mova      Z(1), m1
+    ret
+
+
+align 16
+fft16_avx:
+    mova       m2, Z(2)
+    mova       m3, Z(3)
+    T4_SSE     m2, m3, m7
+
+    mova       m0, Z(0)
+    mova       m1, Z(1)
+    T8_AVX     m0, m1, m4, m5, m7
+
+    mova       m4, [ps_cos16_1]
+    mova       m5, [ps_cos16_2]
+    vmulps     m6, m2, m4
+    vmulps     m7, m3, m5
+    vaddps     m7, m7, m6
+    vmulps     m2, m2, m5
+    vmulps     m3, m3, m4
+    vsubps     m3, m3, m2
+    vblendps   m2, m7, m3, 0xf0
+    vperm2f128 m3, m7, m3, 0x21
+    vaddps     m4, m2, m3
+    vsubps     m2, m3, m2
+    vperm2f128 m2, m2, m2, 0x01
+    vsubps     m3, m1, m2
+    vaddps     m1, m1, m2
+    vsubps     m5, m0, m4
+    vaddps     m0, m0, m4
+    vextractf128   Z(0), m0, 0
+    vextractf128  ZH(0), m1, 0
+    vextractf128   Z(1), m0, 1
+    vextractf128  ZH(1), m1, 1
+    vextractf128   Z(2), m5, 0
+    vextractf128  ZH(2), m3, 0
+    vextractf128   Z(3), m5, 1
+    vextractf128  ZH(3), m3, 1
+    ret
+
+align 16
+fft32_avx:
+    call fft16_avx
+
+    mova m0, Z(4)
+    mova m1, Z(5)
+
+    T4_SSE      m0, m1, m4
+
+    mova m2, Z(6)
+    mova m3, Z(7)
+
+    T8_SSE      m0, m1, m2, m3, m4, m6
+    ; m0={r0,r1,r2,r3,r8, r9, r10,r11} m1={i0,i1,i2,i3,i8, i9, i10,i11}
+    ; m2={r4,r5,r6,r7,r12,r13,r14,r15} m3={i4,i5,i6,i7,i12,i13,i14,i15}
+
+    vperm2f128  m4, m0, m2, 0x20
+    vperm2f128  m5, m1, m3, 0x20
+    vperm2f128  m6, m0, m2, 0x31
+    vperm2f128  m7, m1, m3, 0x31
+
+    PASS_SMALL 0, [cos_32], [cos_32+32]
+
+    ret
+
+fft32_interleave_avx:
+    call fft32_avx
+    mov r2d, 32
+.deint_loop:
+    mova     m2, Z(0)
+    mova     m3, Z(1)
+    vunpcklps      m0, m2, m3
+    vunpckhps      m1, m2, m3
+    vextractf128   Z(0), m0, 0
+    vextractf128  ZH(0), m1, 0
+    vextractf128   Z(1), m0, 1
+    vextractf128  ZH(1), m1, 1
+    add r0, mmsize*2
+    sub r2d, mmsize/4
+    jg .deint_loop
+    ret
+
+INIT_XMM sse
+
+align 16
+fft4_avx:
+fft4_sse:
+    mova     m0, Z(0)
+    mova     m1, Z(1)
+    T4_SSE   m0, m1, m2
+    mova   Z(0), m0
+    mova   Z(1), m1
+    ret
+
+align 16
+fft8_sse:
+    mova     m0, Z(0)
+    mova     m1, Z(1)
+    T4_SSE   m0, m1, m2
+    mova     m2, Z(2)
+    mova     m3, Z(3)
+    T8_SSE   m0, m1, m2, m3, m4, m5
+    mova   Z(0), m0
+    mova   Z(1), m1
+    mova   Z(2), m2
+    mova   Z(3), m3
+    ret
+
+align 16
+fft16_sse:
+    mova     m0, Z(0)
+    mova     m1, Z(1)
+    T4_SSE   m0, m1, m2
+    mova     m2, Z(2)
+    mova     m3, Z(3)
+    T8_SSE   m0, m1, m2, m3, m4, m5
+    mova     m4, Z(4)
+    mova     m5, Z(5)
+    mova   Z(0), m0
+    mova   Z(1), m1
+    mova   Z(2), m2
+    mova   Z(3), m3
+    T4_SSE   m4, m5, m6
+    mova     m6, Z2(6)
+    mova     m7, Z2(7)
+    T4_SSE   m6, m7, m0
+    PASS_SMALL 0, [cos_16], [cos_16+16]
+    ret
+
+
+%macro FFT48_3DNOW 0
+align 16
+fft4 %+ SUFFIX:
+    T2_3DNOW m0, m1, Z(0), Z(1)
+    mova     m2, Z(2)
+    mova     m3, Z(3)
+    T4_3DNOW m0, m1, m2, m3, m4, m5
+    PUNPCK   m0, m1, m4
+    PUNPCK   m2, m3, m5
+    mova   Z(0), m0
+    mova   Z(1), m4
+    mova   Z(2), m2
+    mova   Z(3), m5
+    ret
+
+align 16
+fft8 %+ SUFFIX:
+    T2_3DNOW m0, m1, Z(0), Z(1)
+    mova     m2, Z(2)
+    mova     m3, Z(3)
+    T4_3DNOW m0, m1, m2, m3, m4, m5
+    mova   Z(0), m0
+    mova   Z(2), m2
+    T2_3DNOW m4, m5,  Z(4),  Z(5)
+    T2_3DNOW m6, m7, Z2(6), Z2(7)
+    PSWAPD   m0, m5
+    PSWAPD   m2, m7
+    pxor     m0, [ps_m1p1]
+    pxor     m2, [ps_m1p1]
+    pfsub    m5, m0
+    pfadd    m7, m2
+    pfmul    m5, [ps_root2]
+    pfmul    m7, [ps_root2]
+    T4_3DNOW m1, m3, m5, m7, m0, m2
+    mova   Z(5), m5
+    mova  Z2(7), m7
+    mova     m0, Z(0)
+    mova     m2, Z(2)
+    T4_3DNOW m0, m2, m4, m6, m5, m7
+    PUNPCK   m0, m1, m5
+    PUNPCK   m2, m3, m7
+    mova   Z(0), m0
+    mova   Z(1), m5
+    mova   Z(2), m2
+    mova   Z(3), m7
+    PUNPCK   m4,  Z(5), m5
+    PUNPCK   m6, Z2(7), m7
+    mova   Z(4), m4
+    mova   Z(5), m5
+    mova  Z2(6), m6
+    mova  Z2(7), m7
+    ret
+%endmacro
+
+%if ARCH_X86_32
+INIT_MMX 3dnowext
+FFT48_3DNOW
+
+INIT_MMX 3dnow
+FFT48_3DNOW
+%endif
+
+%define Z(x) [zcq + o1q*(x&6) + mmsize*(x&1)]
+%define Z2(x) [zcq + o3q + mmsize*(x&1)]
+%define ZH(x) [zcq + o1q*(x&6) + mmsize*(x&1) + mmsize/2]
+%define Z2H(x) [zcq + o3q + mmsize*(x&1) + mmsize/2]
+
+%macro DECL_PASS 2+ ; name, payload
+align 16
+%1:
+DEFINE_ARGS zc, w, n, o1, o3
+    lea o3q, [nq*3]
+    lea o1q, [nq*8]
+    shl o3q, 4
+.loop:
+    %2
+    add zcq, mmsize*2
+    add  wq, mmsize
+    sub  nd, mmsize/8
+    jg .loop
+    rep ret
+%endmacro
+
+%macro FFT_DISPATCH 2; clobbers 5 GPRs, 8 XMMs
+    lea r2, [dispatch_tab%1]
+    mov r2, [r2 + (%2q-2)*gprsize]
+%ifdef PIC
+    lea r3, [$$]
+    add r2, r3
+%endif
+    call r2
+%endmacro ; FFT_DISPATCH
+
+INIT_YMM avx
+
+%macro INTERL_AVX 5
+    vunpckhps      %3, %2, %1
+    vunpcklps      %2, %2, %1
+    vextractf128   %4(%5), %2, 0
+    vextractf128  %4 %+ H(%5), %3, 0
+    vextractf128   %4(%5 + 1), %2, 1
+    vextractf128  %4 %+ H(%5 + 1), %3, 1
+%endmacro
+
+%define INTERL INTERL_AVX
+
+DECL_PASS pass_avx, PASS_BIG 1
+DECL_PASS pass_interleave_avx, PASS_BIG 0
+
+cglobal fft_calc, 2,5,8
+    mov     r3d, [r0 + FFTContext.nbits]
+    mov     r0, r1
+    mov     r1, r3
+    FFT_DISPATCH _interleave %+ SUFFIX, r1
+    REP_RET
+
+
+INIT_XMM sse
+
+%macro INTERL_SSE 5
+    mova     %3, %2
+    unpcklps %2, %1
+    unpckhps %3, %1
+    mova  %4(%5), %2
+    mova  %4(%5+1), %3
+%endmacro
+
+%define INTERL INTERL_SSE
+
+DECL_PASS pass_sse, PASS_BIG 1
+DECL_PASS pass_interleave_sse, PASS_BIG 0
+
+%macro FFT_CALC_FUNC 0
+cglobal fft_calc, 2,5,8
+    mov     r3d, [r0 + FFTContext.nbits]
+    PUSH    r1
+    PUSH    r3
+    mov     r0, r1
+    mov     r1, r3
+    FFT_DISPATCH _interleave %+ SUFFIX, r1
+    POP     rcx
+    POP     r4
+    cmp     rcx, 3+(mmsize/16)
+    jg      .end
+    mov     r2, -1
+    add     rcx, 3
+    shl     r2, cl
+    sub     r4, r2
+.loop:
+%if mmsize == 8
+    PSWAPD  m0, [r4 + r2 + 4]
+    mova [r4 + r2 + 4], m0
+%else
+    movaps   xmm0, [r4 + r2]
+    movaps   xmm1, xmm0
+    unpcklps xmm0, [r4 + r2 + 16]
+    unpckhps xmm1, [r4 + r2 + 16]
+    movaps   [r4 + r2],      xmm0
+    movaps   [r4 + r2 + 16], xmm1
+%endif
+    add      r2, mmsize*2
+    jl       .loop
+.end:
+%if cpuflag(3dnow)
+    femms
+    RET
+%else
+    REP_RET
+%endif
+%endmacro
+
+%if ARCH_X86_32
+INIT_MMX 3dnow
+FFT_CALC_FUNC
+INIT_MMX 3dnowext
+FFT_CALC_FUNC
+%endif
+INIT_XMM sse
+FFT_CALC_FUNC
+
+cglobal fft_permute, 2,7,1
+    mov     r4,  [r0 + FFTContext.revtab]
+    mov     r5,  [r0 + FFTContext.tmpbuf]
+    mov     ecx, [r0 + FFTContext.nbits]
+    mov     r2, 1
+    shl     r2, cl
+    xor     r0, r0
+%if ARCH_X86_32
+    mov     r1, r1m
+%endif
+.loop:
+    movaps  xmm0, [r1 + 8*r0]
+    movzx   r6, word [r4 + 2*r0]
+    movzx   r3, word [r4 + 2*r0 + 2]
+    movlps  [r5 + 8*r6], xmm0
+    movhps  [r5 + 8*r3], xmm0
+    add     r0, 2
+    cmp     r0, r2
+    jl      .loop
+    shl     r2, 3
+    add     r1, r2
+    add     r5, r2
+    neg     r2
+; nbits >= 2 (FFT4) and sizeof(FFTComplex)=8 => at least 32B
+.loopcopy:
+    movaps  xmm0, [r5 + r2]
+    movaps  xmm1, [r5 + r2 + 16]
+    movaps  [r1 + r2], xmm0
+    movaps  [r1 + r2 + 16], xmm1
+    add     r2, 32
+    jl      .loopcopy
+    REP_RET
+
+%macro IMDCT_CALC_FUNC 0
+cglobal imdct_calc, 3,5,3
+    mov     r3d, [r0 + FFTContext.mdctsize]
+    mov     r4,  [r0 + FFTContext.imdcthalf]
+    add     r1,  r3
+    PUSH    r3
+    PUSH    r1
+%if ARCH_X86_32
+    push    r2
+    push    r1
+    push    r0
+%else
+    sub     rsp, 8+32*WIN64 ; allocate win64 shadow space
+%endif
+    call    r4
+%if ARCH_X86_32
+    add     esp, 12
+%else
+    add     rsp, 8+32*WIN64
+%endif
+    POP     r1
+    POP     r3
+    lea     r0, [r1 + 2*r3]
+    mov     r2, r3
+    sub     r3, mmsize
+    neg     r2
+    mova    m2, [ps_m1m1m1m1]
+.loop:
+%if mmsize == 8
+    PSWAPD  m0, [r1 + r3]
+    PSWAPD  m1, [r0 + r2]
+    pxor    m0, m2
+%else
+    mova    m0, [r1 + r3]
+    mova    m1, [r0 + r2]
+    shufps  m0, m0, 0x1b
+    shufps  m1, m1, 0x1b
+    xorps   m0, m2
+%endif
+    mova [r0 + r3], m1
+    mova [r1 + r2], m0
+    sub     r3, mmsize
+    add     r2, mmsize
+    jl      .loop
+%if cpuflag(3dnow)
+    femms
+    RET
+%else
+    REP_RET
+%endif
+%endmacro
+
+%if ARCH_X86_32
+INIT_MMX 3dnow
+IMDCT_CALC_FUNC
+INIT_MMX 3dnowext
+IMDCT_CALC_FUNC
+%endif
+
+INIT_XMM sse
+IMDCT_CALC_FUNC
+
+%if ARCH_X86_32
+INIT_MMX 3dnow
+%define mulps pfmul
+%define addps pfadd
+%define subps pfsub
+%define unpcklps punpckldq
+%define unpckhps punpckhdq
+DECL_PASS pass_3dnow, PASS_SMALL 1, [wq], [wq+o1q]
+DECL_PASS pass_interleave_3dnow, PASS_BIG 0
+%define pass_3dnowext pass_3dnow
+%define pass_interleave_3dnowext pass_interleave_3dnow
+%endif
+
+%ifdef PIC
+%define SECTION_REL - $$
+%else
+%define SECTION_REL
+%endif
+
+%macro DECL_FFT 1-2 ; nbits, suffix
+%ifidn %0, 1
+%xdefine fullsuffix SUFFIX
+%else
+%xdefine fullsuffix %2 %+ SUFFIX
+%endif
+%xdefine list_of_fft fft4 %+ SUFFIX SECTION_REL, fft8 %+ SUFFIX SECTION_REL
+%if %1>=5
+%xdefine list_of_fft list_of_fft, fft16 %+ SUFFIX SECTION_REL
+%endif
+%if %1>=6
+%xdefine list_of_fft list_of_fft, fft32 %+ fullsuffix SECTION_REL
+%endif
+
+%assign n 1<<%1
+%rep 17-%1
+%assign n2 n/2
+%assign n4 n/4
+%xdefine list_of_fft list_of_fft, fft %+ n %+ fullsuffix SECTION_REL
+
+align 16
+fft %+ n %+ fullsuffix:
+    call fft %+ n2 %+ SUFFIX
+    add r0, n*4 - (n&(-2<<%1))
+    call fft %+ n4 %+ SUFFIX
+    add r0, n*2 - (n2&(-2<<%1))
+    call fft %+ n4 %+ SUFFIX
+    sub r0, n*6 + (n2&(-2<<%1))
+    lea r1, [cos_ %+ n]
+    mov r2d, n4/2
+    jmp pass %+ fullsuffix
+
+%assign n n*2
+%endrep
+%undef n
+
+align 8
+dispatch_tab %+ fullsuffix: pointer list_of_fft
+%endmacro ; DECL_FFT
+
+INIT_YMM avx
+DECL_FFT 6
+DECL_FFT 6, _interleave
+INIT_XMM sse
+DECL_FFT 5
+DECL_FFT 5, _interleave
+%if ARCH_X86_32
+INIT_MMX 3dnow
+DECL_FFT 4
+DECL_FFT 4, _interleave
+INIT_MMX 3dnowext
+DECL_FFT 4
+DECL_FFT 4, _interleave
+%endif
+
+INIT_XMM sse
+%undef mulps
+%undef addps
+%undef subps
+%undef unpcklps
+%undef unpckhps
+
+%macro PREROTATER 5 ;-2*k, 2*k, input+n4, tcos+n8, tsin+n8
+%if mmsize == 8 ; j*2+2-n4, n4-2-j*2, input+n4, tcos+n8, tsin+n8
+    PSWAPD     m0, [%3+%2*4]
+    movq       m2, [%3+%1*4-8]
+    movq       m3, m0
+    punpckldq  m0, m2
+    punpckhdq  m2, m3
+    movd       m1, [%4+%1*2-4] ; tcos[j]
+    movd       m3, [%4+%2*2]   ; tcos[n4-j-1]
+    punpckldq  m1, [%5+%1*2-4] ; tsin[j]
+    punpckldq  m3, [%5+%2*2]   ; tsin[n4-j-1]
+
+    mova       m4, m0
+    PSWAPD     m5, m1
+    pfmul      m0, m1
+    pfmul      m4, m5
+    mova       m6, m2
+    PSWAPD     m5, m3
+    pfmul      m2, m3
+    pfmul      m6, m5
+%if cpuflag(3dnowext)
+    pfpnacc    m0, m4
+    pfpnacc    m2, m6
+%else
+    SBUTTERFLY dq, 0, 4, 1
+    SBUTTERFLY dq, 2, 6, 3
+    pxor       m4, m7
+    pxor       m6, m7
+    pfadd      m0, m4
+    pfadd      m2, m6
+%endif
+%else
+    movaps   xmm0, [%3+%2*4]
+    movaps   xmm1, [%3+%1*4-0x10]
+    movaps   xmm2, xmm0
+    shufps   xmm0, xmm1, 0x88
+    shufps   xmm1, xmm2, 0x77
+    movlps   xmm4, [%4+%2*2]
+    movlps   xmm5, [%5+%2*2+0x0]
+    movhps   xmm4, [%4+%1*2-0x8]
+    movhps   xmm5, [%5+%1*2-0x8]
+    movaps   xmm2, xmm0
+    movaps   xmm3, xmm1
+    mulps    xmm0, xmm5
+    mulps    xmm1, xmm4
+    mulps    xmm2, xmm4
+    mulps    xmm3, xmm5
+    subps    xmm1, xmm0
+    addps    xmm2, xmm3
+    movaps   xmm0, xmm1
+    unpcklps xmm1, xmm2
+    unpckhps xmm0, xmm2
+%endif
+%endmacro
+
+%macro CMUL 6 ;j, xmm0, xmm1, 3, 4, 5
+    mulps      m6, %3, [%5+%1]
+    mulps      m7, %2, [%5+%1]
+    mulps      %2, %2, [%6+%1]
+    mulps      %3, %3, [%6+%1]
+    subps      %2, %2, m6
+    addps      %3, %3, m7
+%endmacro
+
+%macro POSROTATESHUF_AVX 5 ;j, k, z+n8, tcos+n8, tsin+n8
+.post:
+    vmovaps      ymm1,   [%3+%1*2]
+    vmovaps      ymm0,   [%3+%1*2+0x20]
+    vmovaps      ymm3,   [%3+%2*2]
+    vmovaps      ymm2,   [%3+%2*2+0x20]
+
+    CMUL         %1, ymm0, ymm1, %3, %4, %5
+    CMUL         %2, ymm2, ymm3, %3, %4, %5
+    vshufps      ymm1, ymm1, ymm1, 0x1b
+    vshufps      ymm3, ymm3, ymm3, 0x1b
+    vperm2f128   ymm1, ymm1, ymm1, 0x01
+    vperm2f128   ymm3, ymm3, ymm3, 0x01
+    vunpcklps    ymm6, ymm2, ymm1
+    vunpckhps    ymm4, ymm2, ymm1
+    vunpcklps    ymm7, ymm0, ymm3
+    vunpckhps    ymm5, ymm0, ymm3
+
+    vextractf128 [%3+%1*2],      ymm7, 0
+    vextractf128 [%3+%1*2+0x10], ymm5, 0
+    vextractf128 [%3+%1*2+0x20], ymm7, 1
+    vextractf128 [%3+%1*2+0x30], ymm5, 1
+
+    vextractf128 [%3+%2*2],      ymm6, 0
+    vextractf128 [%3+%2*2+0x10], ymm4, 0
+    vextractf128 [%3+%2*2+0x20], ymm6, 1
+    vextractf128 [%3+%2*2+0x30], ymm4, 1
+    sub      %2,   0x20
+    add      %1,   0x20
+    jl       .post
+%endmacro
+
+%macro POSROTATESHUF 5 ;j, k, z+n8, tcos+n8, tsin+n8
+.post:
+    movaps   xmm1, [%3+%1*2]
+    movaps   xmm0, [%3+%1*2+0x10]
+    CMUL     %1,   xmm0, xmm1, %3, %4, %5
+    movaps   xmm5, [%3+%2*2]
+    movaps   xmm4, [%3+%2*2+0x10]
+    CMUL     %2,   xmm4, xmm5, %3, %4, %5
+    shufps   xmm1, xmm1, 0x1b
+    shufps   xmm5, xmm5, 0x1b
+    movaps   xmm6, xmm4
+    unpckhps xmm4, xmm1
+    unpcklps xmm6, xmm1
+    movaps   xmm2, xmm0
+    unpcklps xmm0, xmm5
+    unpckhps xmm2, xmm5
+    movaps   [%3+%2*2],      xmm6
+    movaps   [%3+%2*2+0x10], xmm4
+    movaps   [%3+%1*2],      xmm0
+    movaps   [%3+%1*2+0x10], xmm2
+    sub      %2,   0x10
+    add      %1,   0x10
+    jl       .post
+%endmacro
+
+%macro CMUL_3DNOW 6
+    mova       m6, [%1+%2*2]
+    mova       %3, [%1+%2*2+8]
+    mova       %4, m6
+    mova       m7, %3
+    pfmul      m6, [%5+%2]
+    pfmul      %3, [%6+%2]
+    pfmul      %4, [%6+%2]
+    pfmul      m7, [%5+%2]
+    pfsub      %3, m6
+    pfadd      %4, m7
+%endmacro
+
+%macro POSROTATESHUF_3DNOW 5 ;j, k, z+n8, tcos+n8, tsin+n8
+.post:
+    CMUL_3DNOW %3, %1, m0, m1, %4, %5
+    CMUL_3DNOW %3, %2, m2, m3, %4, %5
+    movd  [%3+%1*2+ 0], m0
+    movd  [%3+%2*2+12], m1
+    movd  [%3+%2*2+ 0], m2
+    movd  [%3+%1*2+12], m3
+    psrlq      m0, 32
+    psrlq      m1, 32
+    psrlq      m2, 32
+    psrlq      m3, 32
+    movd  [%3+%1*2+ 8], m0
+    movd  [%3+%2*2+ 4], m1
+    movd  [%3+%2*2+ 8], m2
+    movd  [%3+%1*2+ 4], m3
+    sub        %2, 8
+    add        %1, 8
+    jl         .post
+%endmacro
+
+%macro DECL_IMDCT 1
+cglobal imdct_half, 3,12,8; FFTContext *s, FFTSample *output, const FFTSample *input
+%if ARCH_X86_64
+%define rrevtab r7
+%define rtcos   r8
+%define rtsin   r9
+%else
+%define rrevtab r6
+%define rtsin   r6
+%define rtcos   r5
+%endif
+    mov   r3d, [r0+FFTContext.mdctsize]
+    add   r2, r3
+    shr   r3, 1
+    mov   rtcos, [r0+FFTContext.tcos]
+    mov   rtsin, [r0+FFTContext.tsin]
+    add   rtcos, r3
+    add   rtsin, r3
+%if ARCH_X86_64 == 0
+    push  rtcos
+    push  rtsin
+%endif
+    shr   r3, 1
+    mov   rrevtab, [r0+FFTContext.revtab]
+    add   rrevtab, r3
+%if ARCH_X86_64 == 0
+    push  rrevtab
+%endif
+
+%if mmsize == 8
+    sub   r3, 2
+%else
+    sub   r3, 4
+%endif
+%if ARCH_X86_64 || mmsize == 8
+    xor   r4, r4
+    sub   r4, r3
+%endif
+%if notcpuflag(3dnowext) && mmsize == 8
+    movd  m7, [ps_m1m1m1m1]
+%endif
+.pre:
+%if ARCH_X86_64 == 0
+;unspill
+%if mmsize != 8
+    xor   r4, r4
+    sub   r4, r3
+%endif
+    mov   rtcos, [esp+8]
+    mov   rtsin, [esp+4]
+%endif
+
+    PREROTATER r4, r3, r2, rtcos, rtsin
+%if mmsize == 8
+    mov    r6, [esp]                ; rrevtab = ptr+n8
+    movzx  r5,  word [rrevtab+r4-2] ; rrevtab[j]
+    movzx  r6,  word [rrevtab+r3]   ; rrevtab[n4-j-1]
+    mova [r1+r5*8], m0
+    mova [r1+r6*8], m2
+    add    r4, 2
+    sub    r3, 2
+%else
+%if ARCH_X86_64
+    movzx  r5,  word [rrevtab+r4-4]
+    movzx  r6,  word [rrevtab+r4-2]
+    movzx  r10, word [rrevtab+r3]
+    movzx  r11, word [rrevtab+r3+2]
+    movlps [r1+r5 *8], xmm0
+    movhps [r1+r6 *8], xmm0
+    movlps [r1+r10*8], xmm1
+    movhps [r1+r11*8], xmm1
+    add    r4, 4
+%else
+    mov    r6, [esp]
+    movzx  r5, word [r6+r4-4]
+    movzx  r4, word [r6+r4-2]
+    movlps [r1+r5*8], xmm0
+    movhps [r1+r4*8], xmm0
+    movzx  r5, word [r6+r3]
+    movzx  r4, word [r6+r3+2]
+    movlps [r1+r5*8], xmm1
+    movhps [r1+r4*8], xmm1
+%endif
+    sub    r3, 4
+%endif
+    jns    .pre
+
+    mov  r5, r0
+    mov  r6, r1
+    mov  r0, r1
+    mov  r1d, [r5+FFTContext.nbits]
+
+    FFT_DISPATCH SUFFIX, r1
+
+    mov  r0d, [r5+FFTContext.mdctsize]
+    add  r6, r0
+    shr  r0, 1
+%if ARCH_X86_64 == 0
+%define rtcos r2
+%define rtsin r3
+    mov  rtcos, [esp+8]
+    mov  rtsin, [esp+4]
+%endif
+    neg  r0
+    mov  r1, -mmsize
+    sub  r1, r0
+    %1 r0, r1, r6, rtcos, rtsin
+%if ARCH_X86_64 == 0
+    add esp, 12
+%endif
+%if mmsize == 8
+    femms
+%endif
+    RET
+%endmacro
+
+DECL_IMDCT POSROTATESHUF
+
+%if ARCH_X86_32
+INIT_MMX 3dnow
+DECL_IMDCT POSROTATESHUF_3DNOW
+
+INIT_MMX 3dnowext
+DECL_IMDCT POSROTATESHUF_3DNOW
+%endif
+
+INIT_YMM avx
+DECL_IMDCT POSROTATESHUF_AVX
diff --git a/media/libav/libavcodec/x86/fft.h b/media/libav/libavcodec/x86/fft.h
new file mode 100644
index 000000000..a60495683
--- /dev/null
+++ b/media/libav/libavcodec/x86/fft.h
@@ -0,0 +1,38 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_X86_FFT_H
+#define AVCODEC_X86_FFT_H
+
+#include "libavcodec/fft.h"
+
+void ff_fft_permute_sse(FFTContext *s, FFTComplex *z);
+void ff_fft_calc_avx(FFTContext *s, FFTComplex *z);
+void ff_fft_calc_sse(FFTContext *s, FFTComplex *z);
+void ff_fft_calc_3dnow(FFTContext *s, FFTComplex *z);
+void ff_fft_calc_3dnowext(FFTContext *s, FFTComplex *z);
+
+void ff_imdct_calc_3dnow(FFTContext *s, FFTSample *output, const FFTSample *input);
+void ff_imdct_half_3dnow(FFTContext *s, FFTSample *output, const FFTSample *input);
+void ff_imdct_calc_3dnowext(FFTContext *s, FFTSample *output, const FFTSample *input);
+void ff_imdct_half_3dnowext(FFTContext *s, FFTSample *output, const FFTSample *input);
+void ff_imdct_calc_sse(FFTContext *s, FFTSample *output, const FFTSample *input);
+void ff_imdct_half_sse(FFTContext *s, FFTSample *output, const FFTSample *input);
+void ff_imdct_half_avx(FFTContext *s, FFTSample *output, const FFTSample *input);
+
+#endif /* AVCODEC_X86_FFT_H */
diff --git a/media/libav/libavcodec/x86/fft_init.c b/media/libav/libavcodec/x86/fft_init.c
new file mode 100644
index 000000000..7ca72c54a
--- /dev/null
+++ b/media/libav/libavcodec/x86/fft_init.c
@@ -0,0 +1,57 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/x86/cpu.h"
+#include "fft.h"
+
+av_cold void ff_fft_init_x86(FFTContext *s)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+#if ARCH_X86_32
+    if (EXTERNAL_AMD3DNOW(cpu_flags)) {
+        /* 3DNow! for K6-2/3 */
+        s->imdct_calc = ff_imdct_calc_3dnow;
+        s->imdct_half = ff_imdct_half_3dnow;
+        s->fft_calc   = ff_fft_calc_3dnow;
+    }
+    if (EXTERNAL_AMD3DNOWEXT(cpu_flags)) {
+        /* 3DNowEx for K7 */
+        s->imdct_calc = ff_imdct_calc_3dnowext;
+        s->imdct_half = ff_imdct_half_3dnowext;
+        s->fft_calc   = ff_fft_calc_3dnowext;
+    }
+#endif
+    if (EXTERNAL_SSE(cpu_flags)) {
+        /* SSE for P3/P4/K8 */
+        s->imdct_calc  = ff_imdct_calc_sse;
+        s->imdct_half  = ff_imdct_half_sse;
+        s->fft_permute = ff_fft_permute_sse;
+        s->fft_calc    = ff_fft_calc_sse;
+        s->fft_permutation = FF_FFT_PERM_SWAP_LSBS;
+    }
+    if (EXTERNAL_AVX(cpu_flags) && s->nbits >= 5) {
+        /* AVX for SB */
+        s->imdct_half      = ff_imdct_half_avx;
+        s->fft_calc        = ff_fft_calc_avx;
+        s->fft_permutation = FF_FFT_PERM_AVX;
+    }
+}
diff --git a/media/libav/libavcodec/x86/mathops.h b/media/libav/libavcodec/x86/mathops.h
new file mode 100644
index 000000000..a62094ee9
--- /dev/null
+++ b/media/libav/libavcodec/x86/mathops.h
@@ -0,0 +1,128 @@
+/*
+ * simple math operations
+ * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_X86_MATHOPS_H
+#define AVCODEC_X86_MATHOPS_H
+
+#include "config.h"
+#include "libavutil/common.h"
+
+#if HAVE_INLINE_ASM
+
+#if ARCH_X86_32
+
+#define MULL MULL
+static av_always_inline av_const int MULL(int a, int b, unsigned shift)
+{
+    int rt, dummy;
+    __asm__ (
+        "imull %3               \n\t"
+        "shrdl %4, %%edx, %%eax \n\t"
+        :"=a"(rt), "=d"(dummy)
+        :"a"(a), "rm"(b), "ci"((uint8_t)shift)
+    );
+    return rt;
+}
+
+#define MULH MULH
+static av_always_inline av_const int MULH(int a, int b)
+{
+    int rt, dummy;
+    __asm__ (
+        "imull %3"
+        :"=d"(rt), "=a"(dummy)
+        :"a"(a), "rm"(b)
+    );
+    return rt;
+}
+
+#define MUL64 MUL64
+static av_always_inline av_const int64_t MUL64(int a, int b)
+{
+    int64_t rt;
+    __asm__ (
+        "imull %2"
+        :"=A"(rt)
+        :"a"(a), "rm"(b)
+    );
+    return rt;
+}
+
+#endif /* ARCH_X86_32 */
+
+#if HAVE_I686
+/* median of 3 */
+#define mid_pred mid_pred
+static inline av_const int mid_pred(int a, int b, int c)
+{
+    int i=b;
+    __asm__ (
+        "cmp    %2, %1 \n\t"
+        "cmovg  %1, %0 \n\t"
+        "cmovg  %2, %1 \n\t"
+        "cmp    %3, %1 \n\t"
+        "cmovl  %3, %1 \n\t"
+        "cmp    %1, %0 \n\t"
+        "cmovg  %1, %0 \n\t"
+        :"+&r"(i), "+&r"(a)
+        :"r"(b), "r"(c)
+    );
+    return i;
+}
+
+#define COPY3_IF_LT(x, y, a, b, c, d)\
+__asm__ volatile(\
+    "cmpl  %0, %3       \n\t"\
+    "cmovl %3, %0       \n\t"\
+    "cmovl %4, %1       \n\t"\
+    "cmovl %5, %2       \n\t"\
+    : "+&r" (x), "+&r" (a), "+r" (c)\
+    : "r" (y), "r" (b), "r" (d)\
+);
+#endif /* HAVE_I686 */
+
+#define MASK_ABS(mask, level)                   \
+    __asm__ ("cltd                   \n\t"      \
+             "xorl %1, %0            \n\t"      \
+             "subl %1, %0            \n\t"      \
+             : "+a"(level), "=&d"(mask))
+
+// avoid +32 for shift optimization (gcc should do that ...)
+#define NEG_SSR32 NEG_SSR32
+static inline  int32_t NEG_SSR32( int32_t a, int8_t s){
+    __asm__ ("sarl %1, %0\n\t"
+         : "+r" (a)
+         : "ic" ((uint8_t)(-s))
+    );
+    return a;
+}
+
+#define NEG_USR32 NEG_USR32
+static inline uint32_t NEG_USR32(uint32_t a, int8_t s){
+    __asm__ ("shrl %1, %0\n\t"
+         : "+r" (a)
+         : "ic" ((uint8_t)(-s))
+    );
+    return a;
+}
+
+#endif /* HAVE_INLINE_ASM */
+#endif /* AVCODEC_X86_MATHOPS_H */