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[FFmpeg-devel,2/2] avcodec/dolby_e: Split decoder/parser files

Message ID 20210125121137.1678-2-nicolas.gaullier@cji.paris
State Accepted
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Series [FFmpeg-devel,1/2] avcodec/dolby_e: Add a parser
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Commit Message

Nicolas Gaullier Jan. 25, 2021, 12:11 p.m. UTC
---
 libavcodec/Makefile                  |   1 +
 libavcodec/dolby_e.c                 | 149 +------
 libavcodec/dolby_e.h                 | 598 +-------------------------
 libavcodec/dolby_e_parser.c          | 227 ++++++++++
 libavcodec/dolby_e_parser.h          |  41 ++
 libavcodec/dolby_e_parser_internal.h |  46 ++
 libavcodec/dolby_edec.h              | 607 +++++++++++++++++++++++++++
 7 files changed, 932 insertions(+), 737 deletions(-)
 create mode 100644 libavcodec/dolby_e_parser.c
 create mode 100644 libavcodec/dolby_e_parser.h
 create mode 100644 libavcodec/dolby_e_parser_internal.h
 create mode 100644 libavcodec/dolby_edec.h

Comments

James Almer Jan. 25, 2021, 1:24 p.m. UTC | #1
On 1/25/2021 9:11 AM, Nicolas Gaullier wrote:
> ---
>   libavcodec/Makefile                  |   1 +
>   libavcodec/dolby_e.c                 | 149 +------
>   libavcodec/dolby_e.h                 | 598 +-------------------------
>   libavcodec/dolby_e_parser.c          | 227 ++++++++++
>   libavcodec/dolby_e_parser.h          |  41 ++
>   libavcodec/dolby_e_parser_internal.h |  46 ++
>   libavcodec/dolby_edec.h              | 607 +++++++++++++++++++++++++++
>   7 files changed, 932 insertions(+), 737 deletions(-)
>   create mode 100644 libavcodec/dolby_e_parser.c
>   create mode 100644 libavcodec/dolby_e_parser.h
>   create mode 100644 libavcodec/dolby_e_parser_internal.h
>   create mode 100644 libavcodec/dolby_edec.h
> 
> diff --git a/libavcodec/Makefile b/libavcodec/Makefile
> index d48fecc5fc..633ebc37f8 100644
> --- a/libavcodec/Makefile
> +++ b/libavcodec/Makefile
> @@ -40,6 +40,7 @@ OBJS = ac3_parser.o                                                     \
>          d3d11va.o                                                        \
>          decode.o                                                         \
>          dirac.o                                                          \
> +       dolby_e_parser.o                                                 \

Don't compile it unconditionally.

>          dv_profile.o                                                     \
>          encode.o                                                         \
>          imgconvert.o                                                     \

[...]

> diff --git a/libavcodec/dolby_e_parser.h b/libavcodec/dolby_e_parser.h
> new file mode 100644
> index 0000000000..2f9a2b2ebb
> --- /dev/null
> +++ b/libavcodec/dolby_e_parser.h
> @@ -0,0 +1,41 @@
> +/*
> + * Copyright (C) 2017 foo86
> + *
> + * 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_DOLBY_E_PARSER_H
> +#define AVCODEC_DOLBY_E_PARSER_H
> +
> +#include "dolby_e.h"
> +
> +typedef struct DBEParseContext {
> +    ParseContext pc;
> +    DBEContext dectx;
> +
> +    DolbyEHeaderInfo metadata;
> +} DBEParseContext;
> +
> +static const uint8_t nb_programs_tab[MAX_PROG_CONF + 1] = {
> +    2, 3, 2, 3, 4, 5, 4, 5, 6, 7, 8, 1, 2, 3, 3, 4, 5, 6, 1, 2, 3, 4, 1, 1
> +};
> +
> +static const uint8_t nb_channels_tab[MAX_PROG_CONF + 1] = {
> +    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 8, 8
> +};

This header doesn't seem to be needed at all. Just add the struct and 
both arrays to dolby_e_parser.c

> +
> +#endif
> diff --git a/libavcodec/dolby_e_parser_internal.h b/libavcodec/dolby_e_parser_internal.h
> new file mode 100644
> index 0000000000..defd1f97d6
> --- /dev/null
> +++ b/libavcodec/dolby_e_parser_internal.h

This name is odd, as it implies the other header is public, which is not.
Try to follow instead what codecs like h264, hevc, and mlp do. There's 
the decoder, the parser, and then a separate source file that is shared 
by both. That way, neither the decoder or parser depend on each other.

dolby_e.c/h - Decoder only functions, tables and structures. Compiled 
when the decoder is enabled.
dolby_e_parser.c - Parser only functions, tables and structures. 
Compiled when the parser is enabled.
dolby_e_parse.c/h - Shared functions, tables and structures. Compiled 
when either decoder or parser are enabled.
James Almer Jan. 25, 2021, 2:43 p.m. UTC | #2
On 1/25/2021 10:24 AM, James Almer wrote:
> On 1/25/2021 9:11 AM, Nicolas Gaullier wrote:
>> ---
>>   libavcodec/Makefile                  |   1 +
>>   libavcodec/dolby_e.c                 | 149 +------
>>   libavcodec/dolby_e.h                 | 598 +-------------------------
>>   libavcodec/dolby_e_parser.c          | 227 ++++++++++
>>   libavcodec/dolby_e_parser.h          |  41 ++
>>   libavcodec/dolby_e_parser_internal.h |  46 ++
>>   libavcodec/dolby_edec.h              | 607 +++++++++++++++++++++++++++
>>   7 files changed, 932 insertions(+), 737 deletions(-)
>>   create mode 100644 libavcodec/dolby_e_parser.c
>>   create mode 100644 libavcodec/dolby_e_parser.h
>>   create mode 100644 libavcodec/dolby_e_parser_internal.h
>>   create mode 100644 libavcodec/dolby_edec.h
>>
>> diff --git a/libavcodec/Makefile b/libavcodec/Makefile
>> index d48fecc5fc..633ebc37f8 100644
>> --- a/libavcodec/Makefile
>> +++ b/libavcodec/Makefile
>> @@ -40,6 +40,7 @@ OBJS = 
>> ac3_parser.o                                                     \
>>          
>> d3d11va.o                                                        \
>>          
>> decode.o                                                         \
>>          
>> dirac.o                                                          \
>> +       
>> dolby_e_parser.o                                                 \
> 
> Don't compile it unconditionally.
> 
>>          
>> dv_profile.o                                                     \
>>          
>> encode.o                                                         \
>>          
>> imgconvert.o                                                     \
> 
> [...]
> 
>> diff --git a/libavcodec/dolby_e_parser.h b/libavcodec/dolby_e_parser.h
>> new file mode 100644
>> index 0000000000..2f9a2b2ebb
>> --- /dev/null
>> +++ b/libavcodec/dolby_e_parser.h
>> @@ -0,0 +1,41 @@
>> +/*
>> + * Copyright (C) 2017 foo86
>> + *
>> + * 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_DOLBY_E_PARSER_H
>> +#define AVCODEC_DOLBY_E_PARSER_H
>> +
>> +#include "dolby_e.h"
>> +
>> +typedef struct DBEParseContext {
>> +    ParseContext pc;
>> +    DBEContext dectx;
>> +
>> +    DolbyEHeaderInfo metadata;
>> +} DBEParseContext;
>> +
>> +static const uint8_t nb_programs_tab[MAX_PROG_CONF + 1] = {
>> +    2, 3, 2, 3, 4, 5, 4, 5, 6, 7, 8, 1, 2, 3, 3, 4, 5, 6, 1, 2, 3, 4, 
>> 1, 1
>> +};
>> +
>> +static const uint8_t nb_channels_tab[MAX_PROG_CONF + 1] = {
>> +    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 
>> 8, 8
>> +};
> 
> This header doesn't seem to be needed at all. Just add the struct and 
> both arrays to dolby_e_parser.c
> 
>> +
>> +#endif
>> diff --git a/libavcodec/dolby_e_parser_internal.h 
>> b/libavcodec/dolby_e_parser_internal.h
>> new file mode 100644
>> index 0000000000..defd1f97d6
>> --- /dev/null
>> +++ b/libavcodec/dolby_e_parser_internal.h
> 
> This name is odd, as it implies the other header is public, which is not.
> Try to follow instead what codecs like h264, hevc, and mlp do. There's 
> the decoder, the parser, and then a separate source file that is shared 
> by both. That way, neither the decoder or parser depend on each other.
> 
> dolby_e.c/h - Decoder only functions, tables and structures. Compiled 
> when the decoder is enabled.
> dolby_e_parser.c - Parser only functions, tables and structures. 
> Compiled when the parser is enabled.
> dolby_e_parse.c/h - Shared functions, tables and structures. Compiled 
> when either decoder or parser are enabled.

I see Paul pushed this set already, so i figured I'd just go ahead and 
implement the above myself. Will send it in a minute.
diff mbox series

Patch

diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index d48fecc5fc..633ebc37f8 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -40,6 +40,7 @@  OBJS = ac3_parser.o                                                     \
        d3d11va.o                                                        \
        decode.o                                                         \
        dirac.o                                                          \
+       dolby_e_parser.o                                                 \
        dv_profile.o                                                     \
        encode.o                                                         \
        imgconvert.o                                                     \
diff --git a/libavcodec/dolby_e.c b/libavcodec/dolby_e.c
index 6bb817ec5c..74388f43d1 100644
--- a/libavcodec/dolby_e.c
+++ b/libavcodec/dolby_e.c
@@ -28,13 +28,14 @@ 
 #include "put_bits.h"
 #include "parser.h"
 #include "dolby_e.h"
+#include "dolby_edec.h"
+#include "dolby_e_parser_internal.h"
 #include "fft.h"
 
 static int skip_input(DBEContext *s, int nb_words)
 {
     if (nb_words > s->input_size) {
-        if (s->avctx)
-            av_log(s->avctx, AV_LOG_ERROR, "Packet too short\n");
+        av_log(s->avctx, AV_LOG_ERROR, "Packet too short\n");
         return AVERROR_INVALIDDATA;
     }
 
@@ -65,8 +66,7 @@  static int convert_input(DBEContext *s, int nb_words, int key)
     av_assert0(nb_words <= 1024u);
 
     if (nb_words > s->input_size) {
-        if (s->avctx)
-            av_log(s->avctx, AV_LOG_ERROR, "Packet too short\n");
+        av_log(s->avctx, AV_LOG_ERROR, "Packet too short\n");
         return AVERROR_INVALIDDATA;
     }
 
@@ -92,69 +92,6 @@  static int convert_input(DBEContext *s, int nb_words, int key)
     return init_get_bits(&s->gb, s->buffer, nb_words * s->word_bits);
 }
 
-static int parse_metadata(DBEContext *s, DolbyEHeaderInfo *hdr)
-{
-    int i, ret, key, mtd_size;
-
-    if ((key = parse_key(s)) < 0)
-        return key;
-    if ((ret = convert_input(s, 1, key)) < 0)
-        return ret;
-
-    skip_bits(&s->gb, 4);
-    mtd_size = get_bits(&s->gb, 10);
-    if (!mtd_size) {
-        if (s->avctx)
-            av_log(s->avctx, AV_LOG_ERROR, "Invalid metadata size\n");
-        return AVERROR_INVALIDDATA;
-    }
-
-    if ((ret = convert_input(s, mtd_size, key)) < 0)
-        return ret;
-
-    skip_bits(&s->gb, 14);
-    hdr->prog_conf = get_bits(&s->gb, 6);
-    if (hdr->prog_conf > MAX_PROG_CONF) {
-        if (s->avctx)
-            av_log(s->avctx, AV_LOG_ERROR, "Invalid program configuration\n");
-        return AVERROR_INVALIDDATA;
-    }
-
-    hdr->nb_channels = nb_channels_tab[hdr->prog_conf];
-    hdr->nb_programs = nb_programs_tab[hdr->prog_conf];
-
-    hdr->fr_code      = get_bits(&s->gb, 4);
-    hdr->fr_code_orig = get_bits(&s->gb, 4);
-    if (!sample_rate_tab[hdr->fr_code] ||
-        !sample_rate_tab[hdr->fr_code_orig]) {
-        if (s->avctx)
-            av_log(s->avctx, AV_LOG_ERROR, "Invalid frame rate code\n");
-        return AVERROR_INVALIDDATA;
-    }
-
-    skip_bits_long(&s->gb, 88);
-    for (i = 0; i < hdr->nb_channels; i++)
-        hdr->ch_size[i] = get_bits(&s->gb, 10);
-    hdr->mtd_ext_size = get_bits(&s->gb, 8);
-    hdr->meter_size   = get_bits(&s->gb, 8);
-
-    skip_bits_long(&s->gb, 10 * hdr->nb_programs);
-    for (i = 0; i < hdr->nb_channels; i++) {
-        hdr->rev_id[i]     = get_bits(&s->gb,  4);
-        skip_bits1(&s->gb);
-        hdr->begin_gain[i] = get_bits(&s->gb, 10);
-        hdr->end_gain[i]   = get_bits(&s->gb, 10);
-    }
-
-    if (get_bits_left(&s->gb) < 0) {
-        if (s->avctx)
-            av_log(s->avctx, AV_LOG_ERROR, "Read past end of metadata\n");
-        return AVERROR_INVALIDDATA;
-    }
-
-    return skip_input(s, mtd_size + 1);
-}
-
 static int parse_metadata_ext(DBEDecodeContext *s1)
 {
     DBEContext *s = &s1->dectx;
@@ -603,73 +540,6 @@  static int filter_frame(DBEDecodeContext *s, AVFrame *frame)
     return 0;
 }
 
-static int dolby_e_sync(DBEContext *s, const uint8_t *buf, int buf_size)
-{
-    int hdr;
-
-    if (buf_size < 3)
-        return AVERROR_INVALIDDATA;
-
-    hdr = AV_RB24(buf);
-    if ((hdr & 0xfffffe) == 0x7888e) {
-        s->word_bits = 24;
-    } else if ((hdr & 0xffffe0) == 0x788e0) {
-        s->word_bits = 20;
-    } else if ((hdr & 0xfffe00) == 0x78e00) {
-        s->word_bits = 16;
-    } else {
-        if (s->avctx)
-            av_log(s->avctx, AV_LOG_ERROR, "Invalid frame header\n");
-        return AVERROR_INVALIDDATA;
-    }
-
-    s->word_bytes  = s->word_bits + 7 >> 3;
-    s->input       = buf + s->word_bytes;
-    s->input_size  = buf_size / s->word_bytes - 1;
-    s->key_present = hdr >> 24 - s->word_bits & 1;
-
-    return 0;
-}
-
-static int dolby_e_parse(AVCodecParserContext *s2, AVCodecContext *avctx,
-                        const uint8_t **poutbuf, int *poutbuf_size,
-                        const uint8_t *buf, int buf_size)
-{
-    DBEParseContext *s1 = s2->priv_data;
-    DBEContext *s = &s1->dectx;
-    int ret;
-
-    if ((ret = dolby_e_sync(s, buf, buf_size)) < 0)
-        goto end;
-
-    if ((ret = parse_metadata(s, &s1->metadata)) < 0)
-        goto end;
-
-    s2->duration = FRAME_SAMPLES;
-    switch (s1->metadata.nb_channels) {
-    case 4:
-        avctx->channel_layout = AV_CH_LAYOUT_4POINT0;
-        break;
-    case 6:
-        avctx->channel_layout = AV_CH_LAYOUT_5POINT1;
-        break;
-    case 8:
-        avctx->channel_layout = AV_CH_LAYOUT_7POINT1;
-        break;
-    }
-
-    avctx->channels    = s1->metadata.nb_channels;
-    avctx->sample_rate = sample_rate_tab[s1->metadata.fr_code];
-    avctx->sample_fmt  = AV_SAMPLE_FMT_FLTP;
-
-end:
-    /* always return the full packet. this parser isn't doing any splitting or
-       combining, only packet analysis */
-    *poutbuf      = buf;
-    *poutbuf_size = buf_size;
-    return buf_size;
-}
-
 static int dolby_e_decode_frame(AVCodecContext *avctx, void *data,
                                 int *got_frame_ptr, AVPacket *avpkt)
 {
@@ -677,10 +547,10 @@  static int dolby_e_decode_frame(AVCodecContext *avctx, void *data,
     DBEContext *s = &s1->dectx;
     int i, j, ret;
 
-    if ((ret = dolby_e_sync(s, avpkt->data, avpkt->size)) < 0)
+    if ((ret = ff_dolby_e_parse_init(s, avpkt->data, avpkt->size)) < 0)
         return ret;
 
-    if ((ret = parse_metadata(s, &s1->metadata)) < 0)
+    if ((ret = ff_dolby_e_parse_header(s, &s1->metadata)) < 0)
         return ret;
 
     if (s1->metadata.nb_programs > 1 && !s1->metadata.multi_prog_warned) {
@@ -853,13 +723,6 @@  static av_cold int dolby_e_init(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodecParser ff_dolby_e_parser = {
-    .codec_ids      = { AV_CODEC_ID_DOLBY_E },
-    .priv_data_size = sizeof(DBEParseContext),
-    .parser_parse   = dolby_e_parse,
-    .parser_close   = ff_parse_close,
-};
-
 AVCodec ff_dolby_e_decoder = {
     .name           = "dolby_e",
     .long_name      = NULL_IF_CONFIG_SMALL("Dolby E"),
diff --git a/libavcodec/dolby_e.h b/libavcodec/dolby_e.h
index 2c012e93d1..855d978bc2 100644
--- a/libavcodec/dolby_e.h
+++ b/libavcodec/dolby_e.h
@@ -21,59 +21,18 @@ 
 #ifndef AVCODEC_DOLBY_E_H
 #define AVCODEC_DOLBY_E_H
 
-#include "libavutil/float_dsp.h"
-#include "libavutil/libm.h"
-#include "libavutil/mem_internal.h"
-
-#include "internal.h"
 #include "get_bits.h"
-#include "kbdwin.h"
-#include "fft.h"
 
 #define FRAME_SAMPLES   1792
 
 #define MAX_PROG_CONF   23
 #define MAX_PROGRAMS    8
 #define MAX_CHANNELS    8
-#define MAX_SEGMENTS    2
-
-#define MAX_GROUPS      8
-#define MAX_EXPONENTS   304
-#define MAX_MANTISSAS   1024
-
-#define MAX_MSTR_EXP    2
-#define MAX_BIAS_EXP    50
-
-typedef struct DBEGroup {
-    uint8_t         nb_exponent;
-    uint8_t         nb_bias_exp[MAX_MSTR_EXP];
-    uint16_t        exp_ofs;
-    uint16_t        mnt_ofs;
-    const uint8_t   *nb_mantissa;
-    uint8_t         imdct_idx;
-    uint8_t         imdct_phs;
-    uint16_t        win_len;
-    uint16_t        dst_ofs;
-    uint16_t        win_ofs;
-    uint16_t        src_ofs;
-} DBEGroup;
-
-typedef struct DBEChannel {
-    int     gr_code;
-    int     bw_code;
-
-    int         nb_groups;
-    int         nb_mstr_exp;
-    DBEGroup    groups[MAX_GROUPS];
-
-    int     exp_strategy[MAX_GROUPS];
-    int     exponents[MAX_EXPONENTS];
-    int     bap[MAX_EXPONENTS];
-    int     idx[MAX_EXPONENTS];
-
-    DECLARE_ALIGNED(32, float, mantissas)[MAX_MANTISSAS];
-} DBEChannel;
 
+/**
+ * @struct DBEContext
+ * Dolby E reading context used by decoder and parser.
+ */
 typedef struct DBEContext {
     void        *avctx;
     GetBitContext   gb;
@@ -119,557 +78,8 @@  typedef struct DolbyEHeaderInfo {
     /** @} */
 } DolbyEHeaderInfo;
 
-typedef struct DBEParseContext {
-    ParseContext pc;
-    DBEContext dectx;
-
-    DolbyEHeaderInfo metadata;
-} DBEParseContext;
-
-typedef struct DBEDecodeContext {
-    AVCodecContext  *avctx;
-    DBEContext  dectx;
-
-    DolbyEHeaderInfo metadata;
-
-    DBEChannel  channels[MAX_SEGMENTS][MAX_CHANNELS];
-
-    DECLARE_ALIGNED(32, float, history)[MAX_CHANNELS][256];
-
-    FFTContext          imdct[3];
-    AVFloatDSPContext   *fdsp;
-} DBEDecodeContext;
-
-static const uint8_t nb_programs_tab[MAX_PROG_CONF + 1] = {
-    2, 3, 2, 3, 4, 5, 4, 5, 6, 7, 8, 1, 2, 3, 3, 4, 5, 6, 1, 2, 3, 4, 1, 1
-};
-
-static const uint8_t nb_channels_tab[MAX_PROG_CONF + 1] = {
-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 8, 8
-};
-
-static const int8_t lfe_channel_tab[MAX_PROG_CONF + 1] = {
-     5,  5, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  5, 5
-};
-
-static const uint8_t ch_reorder_4[4] = { 0, 2, 1, 3 };
-static const uint8_t ch_reorder_6[6] = { 0, 2, 4, 1, 3, 5 };
-static const uint8_t ch_reorder_8[8] = { 0, 2, 6, 4, 1, 3, 7, 5 };
-static const uint8_t ch_reorder_n[8] = { 0, 2, 4, 6, 1, 3, 5, 7 };
-
 static const uint16_t sample_rate_tab[16] = {
     0, 42965, 43008, 44800, 53706, 53760
 };
 
-static const uint8_t nb_groups_tab[4] = { 1, 8, 7, 1 };
-
-static const uint8_t nb_mstr_exp_tab[4] = { 2, 2, 2, 1 };
-
-static const uint8_t nb_mantissa_38[38] = {
-     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-     2,  2,  2,  2,  2,  2,  3,  3,  3,  4,  4,  4,  5,  5,  6,  6,
-     7,  8,  9, 10, 11, 12,
-};
-
-static const uint8_t nb_mantissa_44[44] = {
-     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  2,
-     2,  2,  2,  2,  2,  3,  3,  3,  3,  4,  4,  5,  5,  6,  7,  7,
-     8,  9, 10, 11, 12, 13, 15, 16, 18, 20, 22, 25,
-};
-
-static const uint8_t nb_mantissa_50[50] = {
-     1,  1,  1,  1,  1,  1,  1,  1,  2,  2,  2,  2,  2,  3,  3,  3,
-     3,  4,  4,  5,  5,  6,  6,  7,  8,  9,  9, 10, 12, 13, 14, 16,
-    18, 19, 22, 24, 27, 29, 32, 36, 40, 44, 49, 54, 60, 66, 74, 82,
-    90, 100,
-};
-
-static const uint8_t imdct_bits_tab[3] = { 8, 9, 11 };
-
-static const DBEGroup grp_tab_0[1] = {
-    { 50, { 27, 23 }, 0, 0, nb_mantissa_50, 2, 0, 1152, 0, 1408, 0 },
-};
-
-static const DBEGroup grp_tab_1[8] = {
-    { 38, { 12, 26 }, 0, 0, nb_mantissa_38, 0, 0, 192, 0, 256, 0 },
-    { 38, { 12, 26 }, 38, 128, nb_mantissa_38, 0, 1, 256, 64, 448, 0 },
-    { 38, { 12, 26 }, 76, 256, nb_mantissa_38, 0, 1, 256, 192, 704, 0 },
-    { 38, { 12, 26 }, 114, 384, nb_mantissa_38, 0, 1, 256, 320, 0, 0 },
-    { 38, { 12, 26 }, 152, 512, nb_mantissa_38, 0, 1, 256, 448, 0, 0 },
-    { 38, { 12, 26 }, 190, 640, nb_mantissa_38, 0, 1, 256, 576, 0, 0 },
-    { 38, { 12, 26 }, 228, 768, nb_mantissa_38, 0, 1, 256, 704, 0, 0 },
-    { 38, { 12, 26 }, 266, 896, nb_mantissa_38, 0, 1, 256, 832, 0, 0 },
-};
-
-static const DBEGroup grp_tab_2[7] = {
-    { 38, { 12, 26 }, 0, 0, nb_mantissa_38, 0, 0, 192, 0, 256, 0 },
-    { 38, { 12, 26 }, 38, 128, nb_mantissa_38, 0, 1, 256, 64, 448, 0 },
-    { 38, { 12, 26 }, 76, 256, nb_mantissa_38, 0, 1, 256, 192, 704, 0 },
-    { 38, { 12, 26 }, 114, 384, nb_mantissa_38, 0, 1, 256, 320, 0, 0 },
-    { 38, { 12, 26 }, 152, 512, nb_mantissa_38, 0, 1, 256, 448, 0, 0 },
-    { 38, { 12, 26 }, 190, 640, nb_mantissa_38, 0, 1, 256, 576, 0, 0 },
-    { 44, { 19, 25 }, 228, 768, nb_mantissa_44, 1, 1, 448, 704, 960, 64 },
-};
-
-static const DBEGroup grp_tab_3[1] = {
-    { 21, { 21 }, 0, 0, nb_mantissa_50, 2, 0, 1152, 0, 1408, 0 },
-};
-
-static const DBEGroup grp_tab_4[1] = {
-    { 50, { 27, 23 }, 0, 0, nb_mantissa_50, 2, 2, 1152, 0, 1408, 896 },
-};
-
-static const DBEGroup grp_tab_5[8] = {
-    { 38, { 12, 26 }, 0, 0, nb_mantissa_38, 0, 1, 256, 64, 0, 0 },
-    { 38, { 12, 26 }, 38, 128, nb_mantissa_38, 0, 1, 256, 192, 0, 0 },
-    { 38, { 12, 26 }, 76, 256, nb_mantissa_38, 0, 1, 256, 320, 0, 0 },
-    { 38, { 12, 26 }, 114, 384, nb_mantissa_38, 0, 1, 256, 448, 0, 0 },
-    { 38, { 12, 26 }, 152, 512, nb_mantissa_38, 0, 1, 256, 576, 0, 0 },
-    { 38, { 12, 26 }, 190, 640, nb_mantissa_38, 0, 1, 256, 704, 3008, 0 },
-    { 38, { 12, 26 }, 228, 768, nb_mantissa_38, 0, 1, 256, 832, 2752, 0 },
-    { 38, { 12, 26 }, 266, 896, nb_mantissa_38, 0, 2, 192, 960, 2560, 64 },
-};
-
-static const DBEGroup grp_tab_6[7] = {
-    { 44, { 19, 25 }, 0, 0, nb_mantissa_44, 1, 1, 448, 0, 3264, 0 },
-    { 38, { 12, 26 }, 44, 256, nb_mantissa_38, 0, 1, 256, 320, 0, 0 },
-    { 38, { 12, 26 }, 82, 384, nb_mantissa_38, 0, 1, 256, 448, 0, 0 },
-    { 38, { 12, 26 }, 120, 512, nb_mantissa_38, 0, 1, 256, 576, 0, 0 },
-    { 38, { 12, 26 }, 158, 640, nb_mantissa_38, 0, 1, 256, 704, 3008, 0 },
-    { 38, { 12, 26 }, 196, 768, nb_mantissa_38, 0, 1, 256, 832, 2752, 0 },
-    { 38, { 12, 26 }, 234, 896, nb_mantissa_38, 0, 2, 192, 960, 2560, 64 },
-};
-
-static const DBEGroup grp_tab_7[1] = {
-    { 21, { 21 }, 0, 0, nb_mantissa_50, 2, 2, 1152, 0, 1408, 896 },
-};
-
-static const DBEGroup *const frm_ofs_tab[2][4] = {
-    { grp_tab_0, grp_tab_1, grp_tab_2, grp_tab_3 },
-    { grp_tab_4, grp_tab_5, grp_tab_6, grp_tab_7 }
-};
-
-static const uint8_t mantissa_size1[16][4] = {
-    {  0,  0,  0,  0 }, {  2,  1,  1,  1 }, {  3,  2,  1,  1 }, {  4,  3,  2,  1 },
-    {  5,  4,  3,  2 }, {  6,  5,  4,  3 }, {  7,  6,  5,  4 }, {  8,  7,  6,  5 },
-    {  9,  8,  7,  6 }, { 10,  9,  8,  7 }, { 11, 10,  9,  8 }, { 12, 11, 10,  9 },
-    { 13, 12, 11, 10 }, { 14, 13, 12, 11 }, { 15, 14, 13, 12 }, { 16, 15, 14, 13 },
-};
-
-static const uint8_t mantissa_size2[16][4] = {
-    {  0,  0,  0,  0 }, {  2,  1,  2,  2 }, {  3,  2,  3,  3 }, {  4,  3,  4,  4 },
-    {  5,  4,  5,  5 }, {  6,  5,  6,  6 }, {  7,  6,  7,  7 }, {  8,  7,  8,  8 },
-    {  9,  8,  9,  9 }, { 10,  9, 10, 10 }, { 11, 10, 11, 11 }, { 12, 11, 12, 12 },
-    { 13, 12, 13, 13 }, { 14, 13, 14, 14 }, { 15, 14, 15, 15 }, { 16, 15, 16, 16 },
-};
-
-static const float start_window[192] = {
-    0.00161569379826, 0.00185748233347, 0.00198562758548, 0.00207834078104,
-    0.00215717748523, 0.00223067096393, 0.00230299213147, 0.00237651215396,
-    0.00245275561606, 0.00253281402069, 0.00261754673613, 0.00270768786168,
-    0.00280390761895, 0.00290684998656, 0.00301715751161, 0.00313548872798,
-    0.00326253122934, 0.00339901215995, 0.00354570716636, 0.00370344845023,
-    0.00387313232586, 0.00405572653911, 0.00425227750970, 0.00446391759265,
-    0.00469187240551, 0.00493746822816, 0.00520213944619, 0.00548743597507,
-    0.00579503056737, 0.00612672586953, 0.00648446105606, 0.00687031782873,
-    0.00728652552677, 0.00773546505205, 0.00821967127415, 0.00874183354619,
-    0.00930479393832, 0.00991154278653, 0.01056521116692, 0.01126905994567,
-    0.01202646513050, 0.01284089936559, 0.01371590957417, 0.01465509096066,
-    0.01566205783408, 0.01674041199523, 0.01789370972358, 0.01912542867865,
-    0.02043893626265, 0.02183746113793, 0.02332406961796, 0.02490164852364,
-    0.02657289580178, 0.02834031974193, 0.03020624702903, 0.03217283918354,
-    0.03424211623810, 0.03641598586180, 0.03869627565015, 0.04108476601498,
-    0.04358322107390, 0.04619341515939, 0.04891715301882, 0.05175628239149,
-
-    0.05471237327267, 0.05778734733755, 0.06098291402413, 0.06430101352084,
-    0.06774345212186, 0.07131188644726, 0.07500780649199, 0.07883251748595,
-    0.08278712056651, 0.08687249228061, 0.09108926295730, 0.09543779401074,
-    0.09991815425851, 0.10453009536427, 0.10927302653894, 0.11414598865987,
-    0.11914762799220, 0.12427616972097, 0.12952939152560, 0.13490459744934,
-    0.14039859233595, 0.14600765712201, 0.15172752528722, 0.15755336077528,
-    0.16347973770491, 0.16950062219342, 0.17560935661442, 0.18179864660619,
-    0.18806055113821, 0.19438647593012, 0.20076717050010, 0.20719272909882,
-    0.21365259576030, 0.22013557367283, 0.22662983904194, 0.23312295958328,
-    0.23960191774666, 0.24605313873388, 0.25246252333253, 0.25881548554631,
-    0.26509699495987, 0.27129162373316, 0.27738359807707, 0.28335685401987,
-    0.28919509723179, 0.29488186663467, 0.30040060148455, 0.30573471157819,
-    0.31086765019993, 0.31578298939317, 0.32046449711227, 0.32489621578468,
-    0.32906254179156, 0.33294830535654, 0.33653885031840, 0.33982011325336,
-    0.34277870140679, 0.34540196889300, 0.34767809062480, 0.34959613344194,
-    0.35114612391958, 0.35231911235422, 0.35310723244504, 0.35350375621308,
-
-    0.35350314372945, 0.35310108725579, 0.35229454943591, 0.35108179521634,
-    0.34946241721522, 0.34743735430290, 0.34500890320420, 0.34218072298001,
-    0.33895783229541, 0.33534659943168, 0.33135472505060, 0.32699121776996,
-    0.32226636266000, 0.31719168282019, 0.31177989424432, 0.30604485422875,
-    0.30000150362379, 0.29366580327088, 0.28705466500775, 0.28018587766131,
-    0.27307802848095, 0.26575042049535, 0.25822298630189, 0.25051619882000,
-    0.24265097955783, 0.23464860495522, 0.22653061137548, 0.21831869932335,
-    0.21003463746705, 0.20170016703857, 0.19333690717811, 0.18496626177620,
-    0.17660932835062, 0.16828680947474, 0.16001892724986, 0.15182534128597,
-    0.14372507062477, 0.13573642000364, 0.12787691082233, 0.12016321713317,
-    0.11261110693234, 0.10523538898282, 0.09804986534955, 0.09106728977263,
-    0.08429933194438, 0.07775654768810, 0.07144835495683, 0.06538301547324,
-    0.05956762170687, 0.05400808871425, 0.04870915012107, 0.04367435714993,
-    0.03890607899172, 0.03440550179663, 0.03017262174627, 0.02620622428513,
-    0.02250383492507, 0.01906161305732, 0.01587412848221, 0.01293388032354,
-    0.01023019677288, 0.00774641320626, 0.00545109736891, 0.00325868651263,
-};
-
-static const float short_window2[192] = {
-    0.00018861094606, 0.00033433010202, 0.00050309624485, 0.00070306161748,
-    0.00093995174533, 0.00121913067128, 0.00154606505568, 0.00192647806126,
-    0.00236641248692, 0.00287225985240, 0.00345077377440, 0.00410907465023,
-    0.00485464855241, 0.00569534163219, 0.00663935063508, 0.00769520981249,
-    0.00887177436246, 0.01017820046395, 0.01162392194150, 0.01321862359335,
-    0.01497221122468, 0.01689477844427, 0.01899657030441, 0.02128794388846,
-    0.02377932597692, 0.02648116795039, 0.02940389811590, 0.03255787167130,
-    0.03595331854986, 0.03960028941437, 0.04350860009563, 0.04768777479454,
-    0.05214698838949, 0.05689500821121, 0.06194013566525, 0.06729014809766,
-    0.07295224131210, 0.07893297315602, 0.08523820859989, 0.09187306673620,
-    0.09884187012422, 0.10614809690222, 0.11379433608064, 0.12178224641797,
-    0.13011251926531, 0.13878484574660, 0.14779788861830, 0.15714925912610,
-    0.16683549914631, 0.17685206886673, 0.18719334022589, 0.19785259629099,
-    0.20882203671372, 0.22009278936030, 0.23165492816694, 0.24349749722585,
-    0.25560854105961, 0.26797514099368, 0.28058345748882, 0.29341877824732,
-    0.30646557185942, 0.31970754671026, 0.33312771482295, 0.34670846027024,
-
-    0.36043161174692, 0.37427851885723, 0.38823013163645, 0.40226708279486,
-    0.41636977214436, 0.43051845264462, 0.44469331748632, 0.45887458761470,
-    0.47304259908636, 0.48717788964798, 0.50126128392546, 0.51527397661778,
-    0.52919761310050, 0.54301436685998, 0.55670701320069, 0.57025899869448,
-    0.58365450587230, 0.59687851269542, 0.60991684638414, 0.62275623122793,
-    0.63538433005035, 0.64778977905593, 0.65996221584264, 0.67189230042379,
-    0.68357172916486, 0.69499324160511, 0.70615062019861, 0.71703868307548,
-    0.72765326998919, 0.73799122168099, 0.74805035295521, 0.75782941981995,
-    0.76732808110520, 0.77654685502339, 0.78548707118622, 0.79415081863423,
-    0.80254089047207, 0.81066072573188, 0.81851434910893, 0.82610630922734,
-    0.83344161609862, 0.84052567843230, 0.84736424144524, 0.85396332579459,
-    0.86032916822973, 0.86646816451999, 0.87238681516918, 0.87809167437532,
-    0.88358930263537, 0.88888622333073, 0.89398888356256, 0.89890361943564,
-    0.90363662591861, 0.90819393133744, 0.91258137648979, 0.91680459830070,
-    0.92086901787718, 0.92477983276087, 0.92854201312583, 0.93216030163834,
-    0.93563921662343, 0.93898305819384, 0.94219591693690, 0.94528168477979,
-
-    0.94823843319821, 0.95106834367330, 0.95377776558539, 0.95636718335775,
-    0.95883679961479, 0.96118650212341, 0.96341583179195, 0.96552395212906,
-    0.96750962060547, 0.96937116231768, 0.97110644638309, 0.97271286544154,
-    0.97418731862798, 0.97552619834964, 0.97672538116257, 0.97778022299974,
-    0.97868555895586, 0.97943570778357, 0.98002448120255, 0.98044519806866,
-    0.98069070339493, 0.98075339216123, 0.98062523779637, 0.98029782516478,
-    0.97976238784222, 0.97900984942031, 0.97803086854002, 0.97681588731895,
-    0.97535518280755, 0.97363892108474, 0.97165721358452, 0.96940017523145,
-    0.96685798395452, 0.96402094114589, 0.96087953263194, 0.95742448973047,
-    0.95364684997699, 0.94953801711660, 0.94508981997396, 0.94029456983253,
-    0.93514511597504, 0.92963489905951, 0.92375800202883, 0.91750919827624,
-    0.91088399681406, 0.90387868421832, 0.89649036314692, 0.88871698725397,
-    0.88055739234735, 0.87201132366062, 0.86307945913336, 0.85376342861693,
-    0.84406582894455, 0.83399023482637, 0.82354120554757, 0.81272428745995,
-    0.80154601230457, 0.79001389138101, 0.77813640562199, 0.76592299164227,
-    0.75338402384395, 0.74053079267526, 0.72737547915460, 0.71393112578527,
-};
-
-static const float short_window3[64] = {
-    0.00326887936450, 0.00550242900936, 0.00786846643791, 0.01045683453520,
-    0.01330402120132, 0.01643221072863, 0.01985798040609, 0.02359509464766,
-    0.02765559221954, 0.03205025893128, 0.03678884369614, 0.04188015679495,
-    0.04733210987781, 0.05315172583924, 0.05934513287609, 0.06591755045290,
-    0.07287327156378, 0.08021564389822, 0.08794705152307, 0.09606889811179,
-    0.10458159240070, 0.11348453632940, 0.12277611617809, 0.13245369691511,
-    0.14251361989876, 0.15295120402567, 0.16376075037904, 0.17493555039885,
-    0.18646789757072, 0.19834910260891, 0.21056951208995, 0.22311853047787,
-    0.23598464546683, 0.24915545655419, 0.26261770674500, 0.27635731727778,
-    0.29035942525136, 0.30460842402318, 0.31908800624032, 0.33378120935681,
-    0.34867046348260, 0.36373764140285, 0.37896411059909, 0.39433078709788,
-    0.40981819096657, 0.42540650327031, 0.44107562429959, 0.45680523287270,
-    0.47257484651351, 0.48836388230077, 0.50415171818214, 0.51991775454258,
-    0.53564147581496, 0.55130251191887, 0.56688069931047, 0.58235614142007,
-    0.59770926827271, 0.61292089506118, 0.62797227945823, 0.64284517745255,
-    0.65752189749349, 0.67198535273209, 0.68621911114984, 0.70020744337099,
-};
-
-static const uint8_t dc_code_tab[5] = { 0, 0, 0, 1, 1 };
-
-static const uint8_t ht_code_tab[5] = { 0, 0, 1, 2, 2 };
-
-static const uint8_t band_ofs_tab[3][4] = {
-    { 12, 8, 4, 0 }, { 14, 10, 6, 0 }, { 12, 8, 4, 0 }
-};
-
-static const uint8_t band_low_tab[3] = { 9, 17, 24 };
-
-static const uint16_t fast_gain_tab[8] = {
-    128, 256, 384, 512, 640, 768, 896, 1024
-};
-
-static const uint16_t slow_decay_tab[2][2] = { { 27, -1 }, { 32, 21 } };
-
-static const uint16_t misc_decay_tab[3][2][2] = {
-    { { 354, -1 }, { 425, 425 } },
-    { { 266, -1 }, { 320,  -1 } },
-    { { 213, -1 }, { 256,  -1 } }
-};
-
-static const uint16_t fast_decay_tab[3][2][2][50] = {
-    {{{
-        142, 142, 142, 142, 142, 142, 142, 142, 142, 142,
-        142, 142, 142, 142, 142, 142, 142, 142, 142, 142,
-        142, 142, 142, 142, 142, 142, 142, 142, 142, 142,
-        142, 142, 142, 142, 142, 142, 142, 142,
-    }, {
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-    }}, {{
-        170, 170, 170, 170, 170, 170, 170, 170, 170, 170,
-        170, 170, 170, 170, 170, 170, 170, 170, 170, 170,
-        170, 170, 170, 170, 170, 170, 170, 170, 170, 170,
-        170, 170, 170, 170, 170, 170, 170, 170,
-    }, {
-         64,  64,  64,  64,  64,  64,  64,  64,  64,  64,
-         64,  64,  64,  64,  64,  64,  64,  64,  64,  64,
-         64,  64,  64,  64,  64,  64,  64,  64,  64,  64,
-         64,  64,  64,  64,  64,  64,  64,  64,
-    }}}, {{{
-        266, 266, 106, 106, 106, 106, 106, 106, 106, 106,
-        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
-        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
-        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
-        106, 106, 106, 106,
-    }, {
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,
-    }}, {{
-        319, 319, 128, 128, 128, 128, 128, 128, 128, 128,
-        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
-        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
-        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
-        128, 128, 128, 128,
-    }, {
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,
-    }}}, {{{
-        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
-        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
-        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
-        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
-        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
-    }, {
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-    }}, {{
-        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
-        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
-        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
-        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
-        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
-    }, {
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
-    }}}
-};
-
-static const uint16_t fast_gain_adj_tab[3][2][62] = {
-    {{
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   1,   2,   4,   7,  11,  16,  29,  44,  59,
-         76,  94, 116, 142, 179, 221, 252, 285, 312, 334,
-    }, {
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          2,   5,   8,  10,  15,  28,  42,  57,  75,  93,
-        115, 140, 177, 219, 247, 280, 308, 330, 427, 533,
-    }}, {{
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   2,   5,   8,  12,  21,  35,  51,  69,  89,
-        111, 138, 176, 220, 251, 284, 312, 334,
-    }, {
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   2,
-          5,   8,  11,  18,  33,  49,  65,  84, 106, 132,
-        168, 214, 245, 279, 308, 329, 427, 533,
-    }}, {{
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   1,   4,   7,  10,  17,
-         31,  47,  65,  84, 107, 134, 171, 215, 250, 283,
-        312, 334,
-    }, {
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-          0,   0,   0,   0,   3,   6,   9,  13,  27,  43,
-         60,  79, 100, 126, 160, 207, 242, 276, 307, 329,
-        427, 533,
-    }}
-};
-
-static const uint16_t slow_gain_tab[3][2][50] = {
-    {{
-        3072, 3072, 3072, 3072, 3072, 3072, 1063, 1063, 1063, 1063,
-        1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063,
-        1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063,
-        1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063,
-    }, {
-        3072, 3072, 3072, 3072, 3072, 3072,  850,  850,  850,  850,
-         850,  850,  850,  850,  850,  850,  850,  850,  850,  850,
-         850,  850,  850,  850,  850,  850,  850,  850,  850,  850,
-         850,  850,  850,  850,  850,  850,  850,  850,
-    }}, {{
-        3072, 1212, 1212, 1212,  999,  999,  999,  999,  999,  999,
-         999,  999,  999,  999,  999,  999,  999,  999,  999,  999,
-         999,  999,  999,  999,  999,  999,  999,  999,  999,  999,
-         999,  999,  999,  999,  999,  999,  999,  999,  999,  999,
-         999,  999,  999,  999,
-    }, {
-          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-          -1,   -1,   -1,   -1,
-    }}, {{
-        3072, 3072, 3072, 3072, 3072, 3072, 3072, 3072, 3072, 3072,
-         999,  999,  999,  999,  999,  999,  999,  999,  999,  999,
-         999,  999,  999,  999,  999,  999,  999,  999,  999,  999,
-         999,  999,  999,  999,  999,  999,  999,  999,  999,  999,
-         999,  999,  999,  999,  999,  999,  999,  999,  999,  999,
-    }, {
-          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-    }}
-};
-
-static const uint16_t hearing_thresh_tab[3][3][50] = {
-    {{
-        1403, 1141, 1000,  959,  948,  957,  946,  925,  899,  871,
-         843,  815,  789,  766,  745,  727,  705,  687,  681,  686,
-         701,  725,  768,  854,  940, 1018, 1075, 1103, 1111, 1106,
-        1098, 1105, 1142, 1237, 1419, 1721, 2169, 2805,
-    }, {
-        1401, 1130,  995,  957,  947,  955,  941,  918,  890,  861,
-         831,  803,  777,  754,  734,  717,  698,  684,  682,  692,
-         712,  743,  798,  894,  976, 1045, 1091, 1109, 1110, 1102,
-        1098, 1116, 1174, 1300, 1526, 1884, 2401, 3072,
-    }, {
-        1393, 1086,  974,  949,  957,  941,  913,  878,  843,  808,
-         777,  750,  727,  708,  695,  686,  681,  689,  714,  752,
-         811,  888,  971, 1044, 1087, 1108, 1110, 1102, 1098, 1115,
-        1172, 1290, 1489, 1812, 2293, 2964, 3072, 3072,
-    }}, {{
-        1412, 1343, 1141, 1047, 1000,  974,  959,  951,  948,  947,
-         957,  953,  946,  936,  925,  906,  878,  850,  822,  795,
-         771,  745,  719,  700,  687,  681,  685,  701,  733,  784,
-         885,  977, 1047, 1092, 1110, 1108, 1099, 1102, 1138, 1233,
-        1413, 1711, 2157, 2797,
-    }, {
-        1412, 1336, 1130, 1040,  995,  970,  957,  950,  947,  947,
-         955,  950,  941,  930,  918,  897,  868,  838,  810,  783,
-         759,  734,  710,  693,  684,  681,  690,  712,  752,  823,
-         924, 1009, 1069, 1102, 1111, 1104, 1098, 1111, 1168, 1295,
-        1518, 1873, 2388, 3072,
-    }, {
-        1411, 1293, 1086, 1009,  974,  957,  949,  947,  957,  951,
-         941,  928,  913,  896,  878,  852,  817,  785,  756,  732,
-         713,  695,  683,  682,  689,  710,  746,  811,  906,  992,
-        1061, 1099, 1111, 1106, 1098, 1107, 1155, 1266, 1471, 1799,
-        2277, 2945, 3072, 3072,
-    }}, {{
-        1431, 1412, 1403, 1379, 1343, 1293, 1229, 1180, 1125, 1075,
-        1040, 1014,  996,  979,  965,  957,  951,  948,  947,  957,
-         951,  940,  924,  903,  877,  846,  815,  785,  753,  725,
-         702,  686,  681,  689,  714,  760,  847,  947, 1028, 1083,
-        1108, 1109, 1101, 1100, 1132, 1222, 1402, 1705, 2160, 2803,
-    }, {
-        1431, 1412, 1401, 1375, 1336, 1278, 1215, 1168, 1115, 1066,
-        1032, 1008,  991,  975,  962,  954,  950,  947,  947,  955,
-         948,  935,  916,  894,  866,  835,  803,  772,  742,  715,
-         695,  683,  683,  697,  729,  784,  887,  982, 1054, 1096,
-        1111, 1106, 1098, 1107, 1159, 1281, 1505, 1865, 2391, 3072,
-    }, {
-        1427, 1411, 1393, 1353, 1293, 1215, 1160, 1118, 1072, 1031,
-        1003,  984,  971,  960,  952,  948,  947,  957,  952,  941,
-         924,  902,  876,  847,  815,  781,  750,  723,  700,  685,
-         681,  691,  719,  766,  858,  958, 1039, 1089, 1109, 1108,
-        1099, 1102, 1141, 1245, 1442, 1766, 2250, 2930, 3072, 3072,
-    }}
-};
-
-static const int16_t lwc_gain_tab[11][7] = {
-    {   -21,  -197,  -271,  -466, 32767, 32767, 32767 },
-    {  -197,   -29,  -244,  -271,  -540, 32767, 32767 },
-    {  -271,  -244,   -29,  -249,  -271,  -593, 32767 },
-    {  -466,  -271,  -249,   -29,  -251,  -271,  -632 },
-    {  -540,  -271,  -251,   -29,  -251,  -271,  -664 },
-    {  -593,  -271,  -251,   -29,  -252,  -271,  -690 },
-    {  -632,  -271,  -252,   -29,  -252,  -271,  -711 },
-    {  -664,  -271,  -252,   -29,  -252,  -271,  -730 },
-    {  -690,  -271,  -252,   -29,  -252,  -271,  -745 },
-    {  -711,  -271,  -252,   -29,  -253,  -271,  -759 },
-    {  -730,  -271,  -253,   -29,  -253,  -271,  -771 },
-};
-
-static const int16_t lwc_adj_tab[7] = {
-    -192, -320, -448, -512, -448, -320, -192,
-};
-
-static const uint8_t log_add_tab[212] = {
-    64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 52, 51, 50,
-    49, 48, 47, 47, 46, 45, 44, 44, 43, 42, 41, 41, 40, 39, 38, 38,
-    37, 36, 36, 35, 35, 34, 33, 33, 32, 32, 31, 30, 30, 29, 29, 28,
-    28, 27, 27, 26, 26, 25, 25, 24, 24, 23, 23, 22, 22, 21, 21, 21,
-    20, 20, 19, 19, 19, 18, 18, 18, 17, 17, 17, 16, 16, 16, 15, 15,
-    15, 14, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11,
-    10, 10, 10, 10, 10,  9,  9,  9,  9,  9,  8,  8,  8,  8,  8,  8,
-     7,  7,  7,  7,  7,  7,  6,  6,  6,  6,  6,  6,  6,  6,  5,  5,
-     5,  5,  5,  5,  5,  5,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,
-     4,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  2,
-     2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
-     2,  2,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-     1,  1,  0,  0,
-};
-
-static const uint8_t bap_tab[64] = {
-     0,  1,  1,  1,  1,  1,  2,  2,  2,  2,  2,  3,  3,  3,  3,  4,
-     4,  4,  4,  5,  5,  5,  5,  6,  6,  6,  6,  7,  7,  7,  7,  8,
-     8,  8,  8,  9,  9,  9,  9, 10, 10, 10, 10, 11, 11, 11, 11, 12,
-    12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 15,
-};
-
-static float mantissa_tab1[17][4];
-static float mantissa_tab2[17][4];
-static float mantissa_tab3[17][4];
-static float exponent_tab[50];
-static float gain_tab[1024];
-
-DECLARE_ALIGNED(32, static float, window)[3712];
-
 #endif
diff --git a/libavcodec/dolby_e_parser.c b/libavcodec/dolby_e_parser.c
new file mode 100644
index 0000000000..31275be122
--- /dev/null
+++ b/libavcodec/dolby_e_parser.c
@@ -0,0 +1,227 @@ 
+/*
+ * Copyright (C) 2017 foo86
+ *
+ * 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 "parser.h"
+ 
+#if CONFIG_DOLBY_E_PARSER | CONFIG_DOLBY_E_DECODER
+
+#include "get_bits.h"
+#include "put_bits.h"
+#include "dolby_e_parser.h"
+#include "dolby_e_parser_internal.h"
+
+static int skip_input(DBEContext *s, int nb_words)
+{
+    if (nb_words > s->input_size) {
+        return AVERROR_INVALIDDATA;
+    }
+
+    s->input      += nb_words * s->word_bytes;
+    s->input_size -= nb_words;
+    return 0;
+}
+
+static int parse_key(DBEContext *s)
+{
+    if (s->key_present) {
+        const uint8_t *key = s->input;
+        int      ret = skip_input(s, 1);
+        if (ret < 0)
+            return ret;
+        return AV_RB24(key) >> 24 - s->word_bits;
+    }
+    return 0;
+}
+
+static int convert_input(DBEContext *s, int nb_words, int key)
+{
+    const uint8_t *src = s->input;
+    uint8_t *dst = s->buffer;
+    PutBitContext pb;
+    int i;
+
+    av_assert0(nb_words <= 1024u);
+
+    if (nb_words > s->input_size) {
+        return AVERROR_INVALIDDATA;
+    }
+
+    switch (s->word_bits) {
+    case 16:
+        for (i = 0; i < nb_words; i++, src += 2, dst += 2)
+            AV_WB16(dst, AV_RB16(src) ^ key);
+        break;
+    case 20:
+        init_put_bits(&pb, s->buffer, sizeof(s->buffer));
+        for (i = 0; i < nb_words; i++, src += 3)
+            put_bits(&pb, 20, AV_RB24(src) >> 4 ^ key);
+        flush_put_bits(&pb);
+        break;
+    case 24:
+        for (i = 0; i < nb_words; i++, src += 3, dst += 3)
+            AV_WB24(dst, AV_RB24(src) ^ key);
+        break;
+    default:
+        av_assert0(0);
+    }
+
+    return init_get_bits(&s->gb, s->buffer, nb_words * s->word_bits);
+}
+
+int ff_dolby_e_parse_init(DBEContext *s, const uint8_t *buf, int buf_size)
+{
+    int hdr;
+
+    if (buf_size < 3)
+        return AVERROR_INVALIDDATA;
+
+    hdr = AV_RB24(buf);
+    if ((hdr & 0xfffffe) == 0x7888e) {
+        s->word_bits = 24;
+    } else if ((hdr & 0xffffe0) == 0x788e0) {
+        s->word_bits = 20;
+    } else if ((hdr & 0xfffe00) == 0x78e00) {
+        s->word_bits = 16;
+    } else {
+        if (s->avctx)
+            av_log(s->avctx, AV_LOG_ERROR, "Invalid frame header\n");
+        return AVERROR_INVALIDDATA;
+    }
+
+    s->word_bytes  = s->word_bits + 7 >> 3;
+    s->input       = buf + s->word_bytes;
+    s->input_size  = buf_size / s->word_bytes - 1;
+    s->key_present = hdr >> 24 - s->word_bits & 1;
+
+    return 0;
+}
+
+int ff_dolby_e_parse_header(DBEContext *s, DolbyEHeaderInfo *hdr)
+{
+    int i, ret, key, mtd_size;
+
+    if ((key = parse_key(s)) < 0)
+        return key;
+    if ((ret = convert_input(s, 1, key)) < 0)
+        return ret;
+
+    skip_bits(&s->gb, 4);
+    mtd_size = get_bits(&s->gb, 10);
+    if (!mtd_size) {
+        if (s->avctx)
+            av_log(s->avctx, AV_LOG_ERROR, "Invalid metadata size\n");
+        return AVERROR_INVALIDDATA;
+    }
+
+    if ((ret = convert_input(s, mtd_size, key)) < 0)
+        return ret;
+
+    skip_bits(&s->gb, 14);
+    hdr->prog_conf = get_bits(&s->gb, 6);
+    if (hdr->prog_conf > MAX_PROG_CONF) {
+        if (s->avctx)
+            av_log(s->avctx, AV_LOG_ERROR, "Invalid program configuration\n");
+        return AVERROR_INVALIDDATA;
+    }
+
+    hdr->nb_channels = nb_channels_tab[hdr->prog_conf];
+    hdr->nb_programs = nb_programs_tab[hdr->prog_conf];
+
+    hdr->fr_code      = get_bits(&s->gb, 4);
+    hdr->fr_code_orig = get_bits(&s->gb, 4);
+    if (!sample_rate_tab[hdr->fr_code] ||
+        !sample_rate_tab[hdr->fr_code_orig]) {
+        if (s->avctx)
+            av_log(s->avctx, AV_LOG_ERROR, "Invalid frame rate code\n");
+        return AVERROR_INVALIDDATA;
+    }
+
+    skip_bits_long(&s->gb, 88);
+    for (i = 0; i < hdr->nb_channels; i++)
+        hdr->ch_size[i] = get_bits(&s->gb, 10);
+    hdr->mtd_ext_size = get_bits(&s->gb, 8);
+    hdr->meter_size   = get_bits(&s->gb, 8);
+
+    skip_bits_long(&s->gb, 10 * hdr->nb_programs);
+    for (i = 0; i < hdr->nb_channels; i++) {
+        hdr->rev_id[i]     = get_bits(&s->gb,  4);
+        skip_bits1(&s->gb);
+        hdr->begin_gain[i] = get_bits(&s->gb, 10);
+        hdr->end_gain[i]   = get_bits(&s->gb, 10);
+    }
+
+    if (get_bits_left(&s->gb) < 0) {
+        if (s->avctx)
+            av_log(s->avctx, AV_LOG_ERROR, "Read past end of metadata\n");
+        return AVERROR_INVALIDDATA;
+    }
+
+    return skip_input(s, mtd_size + 1);
+}
+#endif  /* CONFIG_DOLBY_E_PARSER | CONFIG_DOLBY_E_DECODER */
+
+#if CONFIG_DOLBY_E_PARSER
+
+static int dolby_e_parse(AVCodecParserContext *s2, AVCodecContext *avctx,
+                        const uint8_t **poutbuf, int *poutbuf_size,
+                        const uint8_t *buf, int buf_size)
+{
+    DBEParseContext *s1 = s2->priv_data;
+    DBEContext *s = &s1->dectx;
+    int ret;
+
+    if ((ret = ff_dolby_e_parse_init(s, buf, buf_size)) < 0)
+        goto end;
+
+    if ((ret = ff_dolby_e_parse_header(s, &s1->metadata)) < 0)
+        goto end;
+
+    s2->duration = FRAME_SAMPLES;
+    switch (s1->metadata.nb_channels) {
+    case 4:
+        avctx->channel_layout = AV_CH_LAYOUT_4POINT0;
+        break;
+    case 6:
+        avctx->channel_layout = AV_CH_LAYOUT_5POINT1;
+        break;
+    case 8:
+        avctx->channel_layout = AV_CH_LAYOUT_7POINT1;
+        break;
+    }
+
+    avctx->channels    = s1->metadata.nb_channels;
+    avctx->sample_rate = sample_rate_tab[s1->metadata.fr_code];
+    avctx->sample_fmt  = AV_SAMPLE_FMT_FLTP;
+
+end:
+    /* always return the full packet. this parser isn't doing any splitting or
+       combining, only packet analysis */
+    *poutbuf      = buf;
+    *poutbuf_size = buf_size;
+    return buf_size;
+}
+
+AVCodecParser ff_dolby_e_parser = {
+    .codec_ids      = { AV_CODEC_ID_DOLBY_E },
+    .priv_data_size = sizeof(DBEParseContext),
+    .parser_parse   = dolby_e_parse,
+    .parser_close   = ff_parse_close,
+};
+#endif /* CONFIG_DOLBY_E_PARSER */
\ No newline at end of file
diff --git a/libavcodec/dolby_e_parser.h b/libavcodec/dolby_e_parser.h
new file mode 100644
index 0000000000..2f9a2b2ebb
--- /dev/null
+++ b/libavcodec/dolby_e_parser.h
@@ -0,0 +1,41 @@ 
+/*
+ * Copyright (C) 2017 foo86
+ *
+ * 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_DOLBY_E_PARSER_H
+#define AVCODEC_DOLBY_E_PARSER_H
+
+#include "dolby_e.h"
+
+typedef struct DBEParseContext {
+    ParseContext pc;
+    DBEContext dectx;
+
+    DolbyEHeaderInfo metadata;
+} DBEParseContext;
+
+static const uint8_t nb_programs_tab[MAX_PROG_CONF + 1] = {
+    2, 3, 2, 3, 4, 5, 4, 5, 6, 7, 8, 1, 2, 3, 3, 4, 5, 6, 1, 2, 3, 4, 1, 1
+};
+
+static const uint8_t nb_channels_tab[MAX_PROG_CONF + 1] = {
+    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 8, 8
+};
+
+#endif
diff --git a/libavcodec/dolby_e_parser_internal.h b/libavcodec/dolby_e_parser_internal.h
new file mode 100644
index 0000000000..defd1f97d6
--- /dev/null
+++ b/libavcodec/dolby_e_parser_internal.h
@@ -0,0 +1,46 @@ 
+/*
+ * Dolby E parser internal code
+ *
+ * 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_DOLBY_E_PARSER_INTERNAL_H
+#define AVCODEC_DOLBY_E_PARSER_INTERNAL_H
+
+#include "dolby_e.h"
+
+/**
+ * Initialize DBEContext.
+ * Set word_bits/word_bytes, input, input_size, key_present.
+ * @param[out] s DBEContext.
+ * @param[in]  buf raw input buffer.
+ * @param[in]  buf_size must be 3 bytes at least.
+ * @return Returns 0 on success, AVERROR_INVALIDDATA on error
+ */
+int ff_dolby_e_parse_init(DBEContext *s, const uint8_t *buf, int buf_size);
+
+/**
+ * Parse Dolby E metadata.
+ * Parse the header up to the end_gain element.
+ * @param[in]  s DBEContext .
+ * @param[out] hdr Pointer to struct where header info is written.
+ * @return Returns 0 on success, AVERROR_INVALIDDATA on error
+ */
+int ff_dolby_e_parse_header(DBEContext *s, DolbyEHeaderInfo *hdr);
+
+
+#endif /* AVCODEC_DOLBY_E_PARSER_INTERNAL_H */
diff --git a/libavcodec/dolby_edec.h b/libavcodec/dolby_edec.h
new file mode 100644
index 0000000000..02760bb852
--- /dev/null
+++ b/libavcodec/dolby_edec.h
@@ -0,0 +1,607 @@ 
+/*
+ * Copyright (C) 2017 foo86
+ *
+ * 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_DOLBY_EDEC_H
+#define AVCODEC_DOLBY_EDEC_H
+
+#include "libavutil/float_dsp.h"
+#include "libavutil/libm.h"
+#include "libavutil/mem_internal.h"
+
+#include "internal.h"
+#include "get_bits.h"
+#include "kbdwin.h"
+#include "fft.h"
+
+#define MAX_SEGMENTS    2
+
+#define MAX_GROUPS      8
+#define MAX_EXPONENTS   304
+#define MAX_MANTISSAS   1024
+
+#define MAX_MSTR_EXP    2
+#define MAX_BIAS_EXP    50
+
+typedef struct DBEGroup {
+    uint8_t         nb_exponent;
+    uint8_t         nb_bias_exp[MAX_MSTR_EXP];
+    uint16_t        exp_ofs;
+    uint16_t        mnt_ofs;
+    const uint8_t   *nb_mantissa;
+    uint8_t         imdct_idx;
+    uint8_t         imdct_phs;
+    uint16_t        win_len;
+    uint16_t        dst_ofs;
+    uint16_t        win_ofs;
+    uint16_t        src_ofs;
+} DBEGroup;
+
+typedef struct DBEChannel {
+    int     gr_code;
+    int     bw_code;
+
+    int         nb_groups;
+    int         nb_mstr_exp;
+    DBEGroup    groups[MAX_GROUPS];
+
+    int     exp_strategy[MAX_GROUPS];
+    int     exponents[MAX_EXPONENTS];
+    int     bap[MAX_EXPONENTS];
+    int     idx[MAX_EXPONENTS];
+
+    DECLARE_ALIGNED(32, float, mantissas)[MAX_MANTISSAS];
+} DBEChannel;
+
+typedef struct DBEDecodeContext {
+    AVCodecContext  *avctx;
+    DBEContext  dectx;
+
+    DolbyEHeaderInfo metadata;
+
+    DBEChannel  channels[MAX_SEGMENTS][MAX_CHANNELS];
+
+    DECLARE_ALIGNED(32, float, history)[MAX_CHANNELS][256];
+
+    FFTContext          imdct[3];
+    AVFloatDSPContext   *fdsp;
+} DBEDecodeContext;
+
+static const int8_t lfe_channel_tab[MAX_PROG_CONF + 1] = {
+     5,  5, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  5, 5
+};
+
+static const uint8_t ch_reorder_4[4] = { 0, 2, 1, 3 };
+static const uint8_t ch_reorder_6[6] = { 0, 2, 4, 1, 3, 5 };
+static const uint8_t ch_reorder_8[8] = { 0, 2, 6, 4, 1, 3, 7, 5 };
+static const uint8_t ch_reorder_n[8] = { 0, 2, 4, 6, 1, 3, 5, 7 };
+
+
+static const uint8_t nb_groups_tab[4] = { 1, 8, 7, 1 };
+
+static const uint8_t nb_mstr_exp_tab[4] = { 2, 2, 2, 1 };
+
+static const uint8_t nb_mantissa_38[38] = {
+     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+     2,  2,  2,  2,  2,  2,  3,  3,  3,  4,  4,  4,  5,  5,  6,  6,
+     7,  8,  9, 10, 11, 12,
+};
+
+static const uint8_t nb_mantissa_44[44] = {
+     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  2,
+     2,  2,  2,  2,  2,  3,  3,  3,  3,  4,  4,  5,  5,  6,  7,  7,
+     8,  9, 10, 11, 12, 13, 15, 16, 18, 20, 22, 25,
+};
+
+static const uint8_t nb_mantissa_50[50] = {
+     1,  1,  1,  1,  1,  1,  1,  1,  2,  2,  2,  2,  2,  3,  3,  3,
+     3,  4,  4,  5,  5,  6,  6,  7,  8,  9,  9, 10, 12, 13, 14, 16,
+    18, 19, 22, 24, 27, 29, 32, 36, 40, 44, 49, 54, 60, 66, 74, 82,
+    90, 100,
+};
+
+static const uint8_t imdct_bits_tab[3] = { 8, 9, 11 };
+
+static const DBEGroup grp_tab_0[1] = {
+    { 50, { 27, 23 }, 0, 0, nb_mantissa_50, 2, 0, 1152, 0, 1408, 0 },
+};
+
+static const DBEGroup grp_tab_1[8] = {
+    { 38, { 12, 26 }, 0, 0, nb_mantissa_38, 0, 0, 192, 0, 256, 0 },
+    { 38, { 12, 26 }, 38, 128, nb_mantissa_38, 0, 1, 256, 64, 448, 0 },
+    { 38, { 12, 26 }, 76, 256, nb_mantissa_38, 0, 1, 256, 192, 704, 0 },
+    { 38, { 12, 26 }, 114, 384, nb_mantissa_38, 0, 1, 256, 320, 0, 0 },
+    { 38, { 12, 26 }, 152, 512, nb_mantissa_38, 0, 1, 256, 448, 0, 0 },
+    { 38, { 12, 26 }, 190, 640, nb_mantissa_38, 0, 1, 256, 576, 0, 0 },
+    { 38, { 12, 26 }, 228, 768, nb_mantissa_38, 0, 1, 256, 704, 0, 0 },
+    { 38, { 12, 26 }, 266, 896, nb_mantissa_38, 0, 1, 256, 832, 0, 0 },
+};
+
+static const DBEGroup grp_tab_2[7] = {
+    { 38, { 12, 26 }, 0, 0, nb_mantissa_38, 0, 0, 192, 0, 256, 0 },
+    { 38, { 12, 26 }, 38, 128, nb_mantissa_38, 0, 1, 256, 64, 448, 0 },
+    { 38, { 12, 26 }, 76, 256, nb_mantissa_38, 0, 1, 256, 192, 704, 0 },
+    { 38, { 12, 26 }, 114, 384, nb_mantissa_38, 0, 1, 256, 320, 0, 0 },
+    { 38, { 12, 26 }, 152, 512, nb_mantissa_38, 0, 1, 256, 448, 0, 0 },
+    { 38, { 12, 26 }, 190, 640, nb_mantissa_38, 0, 1, 256, 576, 0, 0 },
+    { 44, { 19, 25 }, 228, 768, nb_mantissa_44, 1, 1, 448, 704, 960, 64 },
+};
+
+static const DBEGroup grp_tab_3[1] = {
+    { 21, { 21 }, 0, 0, nb_mantissa_50, 2, 0, 1152, 0, 1408, 0 },
+};
+
+static const DBEGroup grp_tab_4[1] = {
+    { 50, { 27, 23 }, 0, 0, nb_mantissa_50, 2, 2, 1152, 0, 1408, 896 },
+};
+
+static const DBEGroup grp_tab_5[8] = {
+    { 38, { 12, 26 }, 0, 0, nb_mantissa_38, 0, 1, 256, 64, 0, 0 },
+    { 38, { 12, 26 }, 38, 128, nb_mantissa_38, 0, 1, 256, 192, 0, 0 },
+    { 38, { 12, 26 }, 76, 256, nb_mantissa_38, 0, 1, 256, 320, 0, 0 },
+    { 38, { 12, 26 }, 114, 384, nb_mantissa_38, 0, 1, 256, 448, 0, 0 },
+    { 38, { 12, 26 }, 152, 512, nb_mantissa_38, 0, 1, 256, 576, 0, 0 },
+    { 38, { 12, 26 }, 190, 640, nb_mantissa_38, 0, 1, 256, 704, 3008, 0 },
+    { 38, { 12, 26 }, 228, 768, nb_mantissa_38, 0, 1, 256, 832, 2752, 0 },
+    { 38, { 12, 26 }, 266, 896, nb_mantissa_38, 0, 2, 192, 960, 2560, 64 },
+};
+
+static const DBEGroup grp_tab_6[7] = {
+    { 44, { 19, 25 }, 0, 0, nb_mantissa_44, 1, 1, 448, 0, 3264, 0 },
+    { 38, { 12, 26 }, 44, 256, nb_mantissa_38, 0, 1, 256, 320, 0, 0 },
+    { 38, { 12, 26 }, 82, 384, nb_mantissa_38, 0, 1, 256, 448, 0, 0 },
+    { 38, { 12, 26 }, 120, 512, nb_mantissa_38, 0, 1, 256, 576, 0, 0 },
+    { 38, { 12, 26 }, 158, 640, nb_mantissa_38, 0, 1, 256, 704, 3008, 0 },
+    { 38, { 12, 26 }, 196, 768, nb_mantissa_38, 0, 1, 256, 832, 2752, 0 },
+    { 38, { 12, 26 }, 234, 896, nb_mantissa_38, 0, 2, 192, 960, 2560, 64 },
+};
+
+static const DBEGroup grp_tab_7[1] = {
+    { 21, { 21 }, 0, 0, nb_mantissa_50, 2, 2, 1152, 0, 1408, 896 },
+};
+
+static const DBEGroup *const frm_ofs_tab[2][4] = {
+    { grp_tab_0, grp_tab_1, grp_tab_2, grp_tab_3 },
+    { grp_tab_4, grp_tab_5, grp_tab_6, grp_tab_7 }
+};
+
+static const uint8_t mantissa_size1[16][4] = {
+    {  0,  0,  0,  0 }, {  2,  1,  1,  1 }, {  3,  2,  1,  1 }, {  4,  3,  2,  1 },
+    {  5,  4,  3,  2 }, {  6,  5,  4,  3 }, {  7,  6,  5,  4 }, {  8,  7,  6,  5 },
+    {  9,  8,  7,  6 }, { 10,  9,  8,  7 }, { 11, 10,  9,  8 }, { 12, 11, 10,  9 },
+    { 13, 12, 11, 10 }, { 14, 13, 12, 11 }, { 15, 14, 13, 12 }, { 16, 15, 14, 13 },
+};
+
+static const uint8_t mantissa_size2[16][4] = {
+    {  0,  0,  0,  0 }, {  2,  1,  2,  2 }, {  3,  2,  3,  3 }, {  4,  3,  4,  4 },
+    {  5,  4,  5,  5 }, {  6,  5,  6,  6 }, {  7,  6,  7,  7 }, {  8,  7,  8,  8 },
+    {  9,  8,  9,  9 }, { 10,  9, 10, 10 }, { 11, 10, 11, 11 }, { 12, 11, 12, 12 },
+    { 13, 12, 13, 13 }, { 14, 13, 14, 14 }, { 15, 14, 15, 15 }, { 16, 15, 16, 16 },
+};
+
+static const float start_window[192] = {
+    0.00161569379826, 0.00185748233347, 0.00198562758548, 0.00207834078104,
+    0.00215717748523, 0.00223067096393, 0.00230299213147, 0.00237651215396,
+    0.00245275561606, 0.00253281402069, 0.00261754673613, 0.00270768786168,
+    0.00280390761895, 0.00290684998656, 0.00301715751161, 0.00313548872798,
+    0.00326253122934, 0.00339901215995, 0.00354570716636, 0.00370344845023,
+    0.00387313232586, 0.00405572653911, 0.00425227750970, 0.00446391759265,
+    0.00469187240551, 0.00493746822816, 0.00520213944619, 0.00548743597507,
+    0.00579503056737, 0.00612672586953, 0.00648446105606, 0.00687031782873,
+    0.00728652552677, 0.00773546505205, 0.00821967127415, 0.00874183354619,
+    0.00930479393832, 0.00991154278653, 0.01056521116692, 0.01126905994567,
+    0.01202646513050, 0.01284089936559, 0.01371590957417, 0.01465509096066,
+    0.01566205783408, 0.01674041199523, 0.01789370972358, 0.01912542867865,
+    0.02043893626265, 0.02183746113793, 0.02332406961796, 0.02490164852364,
+    0.02657289580178, 0.02834031974193, 0.03020624702903, 0.03217283918354,
+    0.03424211623810, 0.03641598586180, 0.03869627565015, 0.04108476601498,
+    0.04358322107390, 0.04619341515939, 0.04891715301882, 0.05175628239149,
+
+    0.05471237327267, 0.05778734733755, 0.06098291402413, 0.06430101352084,
+    0.06774345212186, 0.07131188644726, 0.07500780649199, 0.07883251748595,
+    0.08278712056651, 0.08687249228061, 0.09108926295730, 0.09543779401074,
+    0.09991815425851, 0.10453009536427, 0.10927302653894, 0.11414598865987,
+    0.11914762799220, 0.12427616972097, 0.12952939152560, 0.13490459744934,
+    0.14039859233595, 0.14600765712201, 0.15172752528722, 0.15755336077528,
+    0.16347973770491, 0.16950062219342, 0.17560935661442, 0.18179864660619,
+    0.18806055113821, 0.19438647593012, 0.20076717050010, 0.20719272909882,
+    0.21365259576030, 0.22013557367283, 0.22662983904194, 0.23312295958328,
+    0.23960191774666, 0.24605313873388, 0.25246252333253, 0.25881548554631,
+    0.26509699495987, 0.27129162373316, 0.27738359807707, 0.28335685401987,
+    0.28919509723179, 0.29488186663467, 0.30040060148455, 0.30573471157819,
+    0.31086765019993, 0.31578298939317, 0.32046449711227, 0.32489621578468,
+    0.32906254179156, 0.33294830535654, 0.33653885031840, 0.33982011325336,
+    0.34277870140679, 0.34540196889300, 0.34767809062480, 0.34959613344194,
+    0.35114612391958, 0.35231911235422, 0.35310723244504, 0.35350375621308,
+
+    0.35350314372945, 0.35310108725579, 0.35229454943591, 0.35108179521634,
+    0.34946241721522, 0.34743735430290, 0.34500890320420, 0.34218072298001,
+    0.33895783229541, 0.33534659943168, 0.33135472505060, 0.32699121776996,
+    0.32226636266000, 0.31719168282019, 0.31177989424432, 0.30604485422875,
+    0.30000150362379, 0.29366580327088, 0.28705466500775, 0.28018587766131,
+    0.27307802848095, 0.26575042049535, 0.25822298630189, 0.25051619882000,
+    0.24265097955783, 0.23464860495522, 0.22653061137548, 0.21831869932335,
+    0.21003463746705, 0.20170016703857, 0.19333690717811, 0.18496626177620,
+    0.17660932835062, 0.16828680947474, 0.16001892724986, 0.15182534128597,
+    0.14372507062477, 0.13573642000364, 0.12787691082233, 0.12016321713317,
+    0.11261110693234, 0.10523538898282, 0.09804986534955, 0.09106728977263,
+    0.08429933194438, 0.07775654768810, 0.07144835495683, 0.06538301547324,
+    0.05956762170687, 0.05400808871425, 0.04870915012107, 0.04367435714993,
+    0.03890607899172, 0.03440550179663, 0.03017262174627, 0.02620622428513,
+    0.02250383492507, 0.01906161305732, 0.01587412848221, 0.01293388032354,
+    0.01023019677288, 0.00774641320626, 0.00545109736891, 0.00325868651263,
+};
+
+static const float short_window2[192] = {
+    0.00018861094606, 0.00033433010202, 0.00050309624485, 0.00070306161748,
+    0.00093995174533, 0.00121913067128, 0.00154606505568, 0.00192647806126,
+    0.00236641248692, 0.00287225985240, 0.00345077377440, 0.00410907465023,
+    0.00485464855241, 0.00569534163219, 0.00663935063508, 0.00769520981249,
+    0.00887177436246, 0.01017820046395, 0.01162392194150, 0.01321862359335,
+    0.01497221122468, 0.01689477844427, 0.01899657030441, 0.02128794388846,
+    0.02377932597692, 0.02648116795039, 0.02940389811590, 0.03255787167130,
+    0.03595331854986, 0.03960028941437, 0.04350860009563, 0.04768777479454,
+    0.05214698838949, 0.05689500821121, 0.06194013566525, 0.06729014809766,
+    0.07295224131210, 0.07893297315602, 0.08523820859989, 0.09187306673620,
+    0.09884187012422, 0.10614809690222, 0.11379433608064, 0.12178224641797,
+    0.13011251926531, 0.13878484574660, 0.14779788861830, 0.15714925912610,
+    0.16683549914631, 0.17685206886673, 0.18719334022589, 0.19785259629099,
+    0.20882203671372, 0.22009278936030, 0.23165492816694, 0.24349749722585,
+    0.25560854105961, 0.26797514099368, 0.28058345748882, 0.29341877824732,
+    0.30646557185942, 0.31970754671026, 0.33312771482295, 0.34670846027024,
+
+    0.36043161174692, 0.37427851885723, 0.38823013163645, 0.40226708279486,
+    0.41636977214436, 0.43051845264462, 0.44469331748632, 0.45887458761470,
+    0.47304259908636, 0.48717788964798, 0.50126128392546, 0.51527397661778,
+    0.52919761310050, 0.54301436685998, 0.55670701320069, 0.57025899869448,
+    0.58365450587230, 0.59687851269542, 0.60991684638414, 0.62275623122793,
+    0.63538433005035, 0.64778977905593, 0.65996221584264, 0.67189230042379,
+    0.68357172916486, 0.69499324160511, 0.70615062019861, 0.71703868307548,
+    0.72765326998919, 0.73799122168099, 0.74805035295521, 0.75782941981995,
+    0.76732808110520, 0.77654685502339, 0.78548707118622, 0.79415081863423,
+    0.80254089047207, 0.81066072573188, 0.81851434910893, 0.82610630922734,
+    0.83344161609862, 0.84052567843230, 0.84736424144524, 0.85396332579459,
+    0.86032916822973, 0.86646816451999, 0.87238681516918, 0.87809167437532,
+    0.88358930263537, 0.88888622333073, 0.89398888356256, 0.89890361943564,
+    0.90363662591861, 0.90819393133744, 0.91258137648979, 0.91680459830070,
+    0.92086901787718, 0.92477983276087, 0.92854201312583, 0.93216030163834,
+    0.93563921662343, 0.93898305819384, 0.94219591693690, 0.94528168477979,
+
+    0.94823843319821, 0.95106834367330, 0.95377776558539, 0.95636718335775,
+    0.95883679961479, 0.96118650212341, 0.96341583179195, 0.96552395212906,
+    0.96750962060547, 0.96937116231768, 0.97110644638309, 0.97271286544154,
+    0.97418731862798, 0.97552619834964, 0.97672538116257, 0.97778022299974,
+    0.97868555895586, 0.97943570778357, 0.98002448120255, 0.98044519806866,
+    0.98069070339493, 0.98075339216123, 0.98062523779637, 0.98029782516478,
+    0.97976238784222, 0.97900984942031, 0.97803086854002, 0.97681588731895,
+    0.97535518280755, 0.97363892108474, 0.97165721358452, 0.96940017523145,
+    0.96685798395452, 0.96402094114589, 0.96087953263194, 0.95742448973047,
+    0.95364684997699, 0.94953801711660, 0.94508981997396, 0.94029456983253,
+    0.93514511597504, 0.92963489905951, 0.92375800202883, 0.91750919827624,
+    0.91088399681406, 0.90387868421832, 0.89649036314692, 0.88871698725397,
+    0.88055739234735, 0.87201132366062, 0.86307945913336, 0.85376342861693,
+    0.84406582894455, 0.83399023482637, 0.82354120554757, 0.81272428745995,
+    0.80154601230457, 0.79001389138101, 0.77813640562199, 0.76592299164227,
+    0.75338402384395, 0.74053079267526, 0.72737547915460, 0.71393112578527,
+};
+
+static const float short_window3[64] = {
+    0.00326887936450, 0.00550242900936, 0.00786846643791, 0.01045683453520,
+    0.01330402120132, 0.01643221072863, 0.01985798040609, 0.02359509464766,
+    0.02765559221954, 0.03205025893128, 0.03678884369614, 0.04188015679495,
+    0.04733210987781, 0.05315172583924, 0.05934513287609, 0.06591755045290,
+    0.07287327156378, 0.08021564389822, 0.08794705152307, 0.09606889811179,
+    0.10458159240070, 0.11348453632940, 0.12277611617809, 0.13245369691511,
+    0.14251361989876, 0.15295120402567, 0.16376075037904, 0.17493555039885,
+    0.18646789757072, 0.19834910260891, 0.21056951208995, 0.22311853047787,
+    0.23598464546683, 0.24915545655419, 0.26261770674500, 0.27635731727778,
+    0.29035942525136, 0.30460842402318, 0.31908800624032, 0.33378120935681,
+    0.34867046348260, 0.36373764140285, 0.37896411059909, 0.39433078709788,
+    0.40981819096657, 0.42540650327031, 0.44107562429959, 0.45680523287270,
+    0.47257484651351, 0.48836388230077, 0.50415171818214, 0.51991775454258,
+    0.53564147581496, 0.55130251191887, 0.56688069931047, 0.58235614142007,
+    0.59770926827271, 0.61292089506118, 0.62797227945823, 0.64284517745255,
+    0.65752189749349, 0.67198535273209, 0.68621911114984, 0.70020744337099,
+};
+
+static const uint8_t dc_code_tab[5] = { 0, 0, 0, 1, 1 };
+
+static const uint8_t ht_code_tab[5] = { 0, 0, 1, 2, 2 };
+
+static const uint8_t band_ofs_tab[3][4] = {
+    { 12, 8, 4, 0 }, { 14, 10, 6, 0 }, { 12, 8, 4, 0 }
+};
+
+static const uint8_t band_low_tab[3] = { 9, 17, 24 };
+
+static const uint16_t fast_gain_tab[8] = {
+    128, 256, 384, 512, 640, 768, 896, 1024
+};
+
+static const uint16_t slow_decay_tab[2][2] = { { 27, -1 }, { 32, 21 } };
+
+static const uint16_t misc_decay_tab[3][2][2] = {
+    { { 354, -1 }, { 425, 425 } },
+    { { 266, -1 }, { 320,  -1 } },
+    { { 213, -1 }, { 256,  -1 } }
+};
+
+static const uint16_t fast_decay_tab[3][2][2][50] = {
+    {{{
+        142, 142, 142, 142, 142, 142, 142, 142, 142, 142,
+        142, 142, 142, 142, 142, 142, 142, 142, 142, 142,
+        142, 142, 142, 142, 142, 142, 142, 142, 142, 142,
+        142, 142, 142, 142, 142, 142, 142, 142,
+    }, {
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+    }}, {{
+        170, 170, 170, 170, 170, 170, 170, 170, 170, 170,
+        170, 170, 170, 170, 170, 170, 170, 170, 170, 170,
+        170, 170, 170, 170, 170, 170, 170, 170, 170, 170,
+        170, 170, 170, 170, 170, 170, 170, 170,
+    }, {
+         64,  64,  64,  64,  64,  64,  64,  64,  64,  64,
+         64,  64,  64,  64,  64,  64,  64,  64,  64,  64,
+         64,  64,  64,  64,  64,  64,  64,  64,  64,  64,
+         64,  64,  64,  64,  64,  64,  64,  64,
+    }}}, {{{
+        266, 266, 106, 106, 106, 106, 106, 106, 106, 106,
+        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
+        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
+        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
+        106, 106, 106, 106,
+    }, {
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,
+    }}, {{
+        319, 319, 128, 128, 128, 128, 128, 128, 128, 128,
+        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
+        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
+        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
+        128, 128, 128, 128,
+    }, {
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,
+    }}}, {{{
+        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
+        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
+        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
+        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
+        106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
+    }, {
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+    }}, {{
+        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
+        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
+        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
+        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
+        128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
+    }, {
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+         -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+    }}}
+};
+
+static const uint16_t fast_gain_adj_tab[3][2][62] = {
+    {{
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   1,   2,   4,   7,  11,  16,  29,  44,  59,
+         76,  94, 116, 142, 179, 221, 252, 285, 312, 334,
+    }, {
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          2,   5,   8,  10,  15,  28,  42,  57,  75,  93,
+        115, 140, 177, 219, 247, 280, 308, 330, 427, 533,
+    }}, {{
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   2,   5,   8,  12,  21,  35,  51,  69,  89,
+        111, 138, 176, 220, 251, 284, 312, 334,
+    }, {
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   2,
+          5,   8,  11,  18,  33,  49,  65,  84, 106, 132,
+        168, 214, 245, 279, 308, 329, 427, 533,
+    }}, {{
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   1,   4,   7,  10,  17,
+         31,  47,  65,  84, 107, 134, 171, 215, 250, 283,
+        312, 334,
+    }, {
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+          0,   0,   0,   0,   3,   6,   9,  13,  27,  43,
+         60,  79, 100, 126, 160, 207, 242, 276, 307, 329,
+        427, 533,
+    }}
+};
+
+static const uint16_t slow_gain_tab[3][2][50] = {
+    {{
+        3072, 3072, 3072, 3072, 3072, 3072, 1063, 1063, 1063, 1063,
+        1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063,
+        1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063,
+        1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063,
+    }, {
+        3072, 3072, 3072, 3072, 3072, 3072,  850,  850,  850,  850,
+         850,  850,  850,  850,  850,  850,  850,  850,  850,  850,
+         850,  850,  850,  850,  850,  850,  850,  850,  850,  850,
+         850,  850,  850,  850,  850,  850,  850,  850,
+    }}, {{
+        3072, 1212, 1212, 1212,  999,  999,  999,  999,  999,  999,
+         999,  999,  999,  999,  999,  999,  999,  999,  999,  999,
+         999,  999,  999,  999,  999,  999,  999,  999,  999,  999,
+         999,  999,  999,  999,  999,  999,  999,  999,  999,  999,
+         999,  999,  999,  999,
+    }, {
+          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+          -1,   -1,   -1,   -1,
+    }}, {{
+        3072, 3072, 3072, 3072, 3072, 3072, 3072, 3072, 3072, 3072,
+         999,  999,  999,  999,  999,  999,  999,  999,  999,  999,
+         999,  999,  999,  999,  999,  999,  999,  999,  999,  999,
+         999,  999,  999,  999,  999,  999,  999,  999,  999,  999,
+         999,  999,  999,  999,  999,  999,  999,  999,  999,  999,
+    }, {
+          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+          -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+    }}
+};
+
+static const uint16_t hearing_thresh_tab[3][3][50] = {
+    {{
+        1403, 1141, 1000,  959,  948,  957,  946,  925,  899,  871,
+         843,  815,  789,  766,  745,  727,  705,  687,  681,  686,
+         701,  725,  768,  854,  940, 1018, 1075, 1103, 1111, 1106,
+        1098, 1105, 1142, 1237, 1419, 1721, 2169, 2805,
+    }, {
+        1401, 1130,  995,  957,  947,  955,  941,  918,  890,  861,
+         831,  803,  777,  754,  734,  717,  698,  684,  682,  692,
+         712,  743,  798,  894,  976, 1045, 1091, 1109, 1110, 1102,
+        1098, 1116, 1174, 1300, 1526, 1884, 2401, 3072,
+    }, {
+        1393, 1086,  974,  949,  957,  941,  913,  878,  843,  808,
+         777,  750,  727,  708,  695,  686,  681,  689,  714,  752,
+         811,  888,  971, 1044, 1087, 1108, 1110, 1102, 1098, 1115,
+        1172, 1290, 1489, 1812, 2293, 2964, 3072, 3072,
+    }}, {{
+        1412, 1343, 1141, 1047, 1000,  974,  959,  951,  948,  947,
+         957,  953,  946,  936,  925,  906,  878,  850,  822,  795,
+         771,  745,  719,  700,  687,  681,  685,  701,  733,  784,
+         885,  977, 1047, 1092, 1110, 1108, 1099, 1102, 1138, 1233,
+        1413, 1711, 2157, 2797,
+    }, {
+        1412, 1336, 1130, 1040,  995,  970,  957,  950,  947,  947,
+         955,  950,  941,  930,  918,  897,  868,  838,  810,  783,
+         759,  734,  710,  693,  684,  681,  690,  712,  752,  823,
+         924, 1009, 1069, 1102, 1111, 1104, 1098, 1111, 1168, 1295,
+        1518, 1873, 2388, 3072,
+    }, {
+        1411, 1293, 1086, 1009,  974,  957,  949,  947,  957,  951,
+         941,  928,  913,  896,  878,  852,  817,  785,  756,  732,
+         713,  695,  683,  682,  689,  710,  746,  811,  906,  992,
+        1061, 1099, 1111, 1106, 1098, 1107, 1155, 1266, 1471, 1799,
+        2277, 2945, 3072, 3072,
+    }}, {{
+        1431, 1412, 1403, 1379, 1343, 1293, 1229, 1180, 1125, 1075,
+        1040, 1014,  996,  979,  965,  957,  951,  948,  947,  957,
+         951,  940,  924,  903,  877,  846,  815,  785,  753,  725,
+         702,  686,  681,  689,  714,  760,  847,  947, 1028, 1083,
+        1108, 1109, 1101, 1100, 1132, 1222, 1402, 1705, 2160, 2803,
+    }, {
+        1431, 1412, 1401, 1375, 1336, 1278, 1215, 1168, 1115, 1066,
+        1032, 1008,  991,  975,  962,  954,  950,  947,  947,  955,
+         948,  935,  916,  894,  866,  835,  803,  772,  742,  715,
+         695,  683,  683,  697,  729,  784,  887,  982, 1054, 1096,
+        1111, 1106, 1098, 1107, 1159, 1281, 1505, 1865, 2391, 3072,
+    }, {
+        1427, 1411, 1393, 1353, 1293, 1215, 1160, 1118, 1072, 1031,
+        1003,  984,  971,  960,  952,  948,  947,  957,  952,  941,
+         924,  902,  876,  847,  815,  781,  750,  723,  700,  685,
+         681,  691,  719,  766,  858,  958, 1039, 1089, 1109, 1108,
+        1099, 1102, 1141, 1245, 1442, 1766, 2250, 2930, 3072, 3072,
+    }}
+};
+
+static const int16_t lwc_gain_tab[11][7] = {
+    {   -21,  -197,  -271,  -466, 32767, 32767, 32767 },
+    {  -197,   -29,  -244,  -271,  -540, 32767, 32767 },
+    {  -271,  -244,   -29,  -249,  -271,  -593, 32767 },
+    {  -466,  -271,  -249,   -29,  -251,  -271,  -632 },
+    {  -540,  -271,  -251,   -29,  -251,  -271,  -664 },
+    {  -593,  -271,  -251,   -29,  -252,  -271,  -690 },
+    {  -632,  -271,  -252,   -29,  -252,  -271,  -711 },
+    {  -664,  -271,  -252,   -29,  -252,  -271,  -730 },
+    {  -690,  -271,  -252,   -29,  -252,  -271,  -745 },
+    {  -711,  -271,  -252,   -29,  -253,  -271,  -759 },
+    {  -730,  -271,  -253,   -29,  -253,  -271,  -771 },
+};
+
+static const int16_t lwc_adj_tab[7] = {
+    -192, -320, -448, -512, -448, -320, -192,
+};
+
+static const uint8_t log_add_tab[212] = {
+    64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 52, 51, 50,
+    49, 48, 47, 47, 46, 45, 44, 44, 43, 42, 41, 41, 40, 39, 38, 38,
+    37, 36, 36, 35, 35, 34, 33, 33, 32, 32, 31, 30, 30, 29, 29, 28,
+    28, 27, 27, 26, 26, 25, 25, 24, 24, 23, 23, 22, 22, 21, 21, 21,
+    20, 20, 19, 19, 19, 18, 18, 18, 17, 17, 17, 16, 16, 16, 15, 15,
+    15, 14, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11,
+    10, 10, 10, 10, 10,  9,  9,  9,  9,  9,  8,  8,  8,  8,  8,  8,
+     7,  7,  7,  7,  7,  7,  6,  6,  6,  6,  6,  6,  6,  6,  5,  5,
+     5,  5,  5,  5,  5,  5,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,
+     4,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  2,
+     2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
+     2,  2,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+     1,  1,  0,  0,
+};
+
+static const uint8_t bap_tab[64] = {
+     0,  1,  1,  1,  1,  1,  2,  2,  2,  2,  2,  3,  3,  3,  3,  4,
+     4,  4,  4,  5,  5,  5,  5,  6,  6,  6,  6,  7,  7,  7,  7,  8,
+     8,  8,  8,  9,  9,  9,  9, 10, 10, 10, 10, 11, 11, 11, 11, 12,
+    12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 15,
+};
+
+static float mantissa_tab1[17][4];
+static float mantissa_tab2[17][4];
+static float mantissa_tab3[17][4];
+static float exponent_tab[50];
+static float gain_tab[1024];
+
+DECLARE_ALIGNED(32, static float, window)[3712];
+
+#endif