/*

 * TwinVQ decoder

 * Copyright (c) 2009 Vitor Sessak

 *

 * 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 <math.h>

#include <stdint.h>

#include "libavutil/channel_layout.h"

#include "avcodec.h"

#include "get_bits.h"

#include "internal.h"

#include "twinvq.h"

#include "metasound_data.h"

#include "twinvq_data.h"

static const TwinVQModeTab mode_08_08 = {

    {

        { 8, bark_tab_s08_64,  10, tab.fcb08s, 1, 5, tab.cb0808s0, tab.cb0808s1, 18 },

        { 2, bark_tab_m08_256, 20, tab.fcb08m, 2, 5, tab.cb0808m0, tab.cb0808m1, 16 },

        { 1, bark_tab_l08_512, 30, tab.fcb08l, 3, 6, tab.cb0808l0, tab.cb0808l1, 17 }

    },

    512, 12, ff_metasound_lsp8, 1, 5, 3, 3, tab.shape08, 8, 28, 20, 6, 40

};

static const TwinVQModeTab mode_11_08 = {

    {

        { 8, bark_tab_s11_64,  10, tab.fcb11s, 1, 5, tab.cb1108s0, tab.cb1108s1, 29 },

        { 2, bark_tab_m11_256, 20, tab.fcb11m, 2, 5, tab.cb1108m0, tab.cb1108m1, 24 },

        { 1, bark_tab_l11_512, 30, tab.fcb11l, 3, 6, tab.cb1108l0, tab.cb1108l1, 27 }

    },

    512, 16, ff_metasound_lsp11, 1, 6, 4, 3, tab.shape11, 9, 36, 30, 7, 90

};

static const TwinVQModeTab mode_11_10 = {

    {

        { 8, bark_tab_s11_64,  10, tab.fcb11s, 1, 5, tab.cb1110s0, tab.cb1110s1, 21 },

        { 2, bark_tab_m11_256, 20, tab.fcb11m, 2, 5, tab.cb1110m0, tab.cb1110m1, 18 },

        { 1, bark_tab_l11_512, 30, tab.fcb11l, 3, 6, tab.cb1110l0, tab.cb1110l1, 20 }

    },

    512, 16, ff_metasound_lsp11, 1, 6, 4, 3, tab.shape11, 9, 36, 30, 7, 90

};

static const TwinVQModeTab mode_16_16 = {

    {

        { 8, bark_tab_s16_128,  10, tab.fcb16s, 1, 5, tab.cb1616s0, tab.cb1616s1, 16 },

        { 2, bark_tab_m16_512,  20, tab.fcb16m, 2, 5, tab.cb1616m0, tab.cb1616m1, 15 },

        { 1, bark_tab_l16_1024, 30, tab.fcb16l, 3, 6, tab.cb1616l0, tab.cb1616l1, 16 }

    },

    1024, 16, ff_metasound_lsp16, 1, 6, 4, 3, tab.shape16, 9, 56, 60, 7, 180

};

static const TwinVQModeTab mode_22_20 = {

    {

        { 8, bark_tab_s22_128,  10, tab.fcb22s_1, 1, 6, tab.cb2220s0, tab.cb2220s1, 18 },

        { 2, bark_tab_m22_512,  20, tab.fcb22m_1, 2, 6, tab.cb2220m0, tab.cb2220m1, 17 },

        { 1, bark_tab_l22_1024, 32, tab.fcb22l_1, 4, 6, tab.cb2220l0, tab.cb2220l1, 18 }

    },

    1024, 16, ff_metasound_lsp22, 1, 6, 4, 3, tab.shape22_1, 9, 56, 36, 7, 144

};

static const TwinVQModeTab mode_22_24 = {

    {

        { 8, bark_tab_s22_128,  10, tab.fcb22s_1, 1, 6, tab.cb2224s0, tab.cb2224s1, 15 },

        { 2, bark_tab_m22_512,  20, tab.fcb22m_1, 2, 6, tab.cb2224m0, tab.cb2224m1, 14 },

        { 1, bark_tab_l22_1024, 32, tab.fcb22l_1, 4, 6, tab.cb2224l0, tab.cb2224l1, 15 }

    },

    1024, 16, ff_metasound_lsp22, 1, 6, 4, 3, tab.shape22_1, 9, 56, 36, 7, 144

};

static const TwinVQModeTab mode_22_32 = {

    {

        { 4, bark_tab_s22_128, 10, tab.fcb22s_2, 1, 6, tab.cb2232s0, tab.cb2232s1, 11 },

        { 2, bark_tab_m22_256, 20, tab.fcb22m_2, 2, 6, tab.cb2232m0, tab.cb2232m1, 11 },

        { 1, bark_tab_l22_512, 32, tab.fcb22l_2, 4, 6, tab.cb2232l0, tab.cb2232l1, 12 }

    },

    512, 16, tab.lsp22_2, 1, 6, 4, 4, tab.shape22_2, 9, 56, 36, 7, 72

};

static const TwinVQModeTab mode_44_40 = {

    {

        { 16, bark_tab_s44_128,  10, tab.fcb44s, 1, 6, tab.cb4440s0, tab.cb4440s1, 18 },

        { 4,  bark_tab_m44_512,  20, tab.fcb44m, 2, 6, tab.cb4440m0, tab.cb4440m1, 17 },

        { 1,  bark_tab_l44_2048, 40, tab.fcb44l, 4, 6, tab.cb4440l0, tab.cb4440l1, 17 }

    },

    2048, 20, ff_metasound_lsp44, 1, 6, 4, 4, tab.shape44, 9, 84, 54, 7, 432

};

static const TwinVQModeTab mode_44_48 = {

    {

        { 16, bark_tab_s44_128,  10, tab.fcb44s, 1, 6, tab.cb4448s0, tab.cb4448s1, 15 },

        { 4,  bark_tab_m44_512,  20, tab.fcb44m, 2, 6, tab.cb4448m0, tab.cb4448m1, 14 },

        { 1,  bark_tab_l44_2048, 40, tab.fcb44l, 4, 6, tab.cb4448l0, tab.cb4448l1, 14 }

    },

    2048, 20, ff_metasound_lsp44, 1, 6, 4, 4, tab.shape44, 9, 84, 54, 7, 432

};

/**

 * Evaluate a * b / 400 rounded to the nearest integer. When, for example,

 * a * b == 200 and the nearest integer is ill-defined, use a table to emulate

 * the following broken float-based implementation used by the binary decoder:

 *

 * @code

 * static int very_broken_op(int a, int b)

 * {

 *    static float test; // Ugh, force gcc to do the division first...

 *

 *    test = a / 400.0;

 *    return b * test + 0.5;

 * }

 * @endcode

 *

 * @note if this function is replaced by just ROUNDED_DIV(a * b, 400.0), the

 * stddev between the original file (before encoding with Yamaha encoder) and

 * the decoded output increases, which leads one to believe that the encoder

 * expects exactly this broken calculation.

 */

{

    int size;

    const uint8_t *rtab;

}

/**

 * Sum to data a periodic peak of a given period, width and shape.

 *

 * @param period the period of the peak divided by 400.0

 */

                     float ppc_gain, float *speech, int len)

{

    int i, j;

    int center;

    // First peak centered around zero

    }

    // For the last block, be careful not to go beyond the end of the buffer

                       const float *shape, float *speech)

{

                                       25000.0, TWINVQ_PGAIN_MU);

    // This is actually the period multiplied by 400. It is just linearly coded

    // between its maximum and minimum value.

                             (1 << mtab->ppc_period_bit) - 1);

    int width;

        // For some unknown reason, NTT decided to code this case differently...

                            400 * mtab->size);

    } else

                         int ch, float *out, float gain,

                         enum TwinVQFrameType ftype)

{

    int i, j;

                         (1.0 / 4096);

        }

                         uint8_t *dst, enum TwinVQFrameType ftype)

{

    int i;

    }

                                 const uint8_t *buf, int buf_size)

{

    int sub;

    GetBitContext gb;

    int i, j, k, ret;

    }

    } else {

                                                       TWINVQ_SUB_GAIN_BITS);

        }

    }

    }

        }

    }

}

{

    int isampf, ibps;

    }

    }

    }

               avctx->channels);

    }

    }

               "This version does not support %d kHz - %d kbit/s/ch mode.\n",

               isampf, isampf);

    }

               "VQF TwinVQ should have only one frame per packet\n");

    }

}

AVCodec ff_twinvq_decoder = {

    .name           = "twinvq",

    .long_name      = NULL_IF_CONFIG_SMALL("VQF TwinVQ"),

    .type           = AVMEDIA_TYPE_AUDIO,

    .id             = AV_CODEC_ID_TWINVQ,

    .priv_data_size = sizeof(TwinVQContext),

    .init           = twinvq_decode_init,

    .close          = ff_twinvq_decode_close,

    .decode         = ff_twinvq_decode_frame,

    .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_CHANNEL_CONF,

    .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,

                                                      AV_SAMPLE_FMT_NONE },

};