aacpsdsp_template.c 8.08 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
/*
 * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * Note: Rounding-to-nearest used unless otherwise stated
 *
 */
#include <stdint.h>

#include "config.h"
#include "libavutil/attributes.h"
#include "aacpsdsp.h"

static void ps_add_squares_c(INTFLOAT *dst, const INTFLOAT (*src)[2], int n)
{
    int i;
    for (i = 0; i < n; i++)
33
        dst[i] += (UINTFLOAT)AAC_MADD28(src[i][0], src[i][0], src[i][1], src[i][1]);
34 35 36 37 38 39 40 41 42 43 44 45 46 47
}

static void ps_mul_pair_single_c(INTFLOAT (*dst)[2], INTFLOAT (*src0)[2], INTFLOAT *src1,
                                 int n)
{
    int i;
    for (i = 0; i < n; i++) {
        dst[i][0] = AAC_MUL16(src0[i][0], src1[i]);
        dst[i][1] = AAC_MUL16(src0[i][1], src1[i]);
    }
}

static void ps_hybrid_analysis_c(INTFLOAT (*out)[2], INTFLOAT (*in)[2],
                                 const INTFLOAT (*filter)[8][2],
48
                                 ptrdiff_t stride, int n)
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74
{
    int i, j;

    for (i = 0; i < n; i++) {
        INT64FLOAT sum_re = (INT64FLOAT)filter[i][6][0] * in[6][0];
        INT64FLOAT sum_im = (INT64FLOAT)filter[i][6][0] * in[6][1];

        for (j = 0; j < 6; j++) {
            INTFLOAT in0_re = in[j][0];
            INTFLOAT in0_im = in[j][1];
            INTFLOAT in1_re = in[12-j][0];
            INTFLOAT in1_im = in[12-j][1];
            sum_re += (INT64FLOAT)filter[i][j][0] * (in0_re + in1_re) -
                      (INT64FLOAT)filter[i][j][1] * (in0_im - in1_im);
            sum_im += (INT64FLOAT)filter[i][j][0] * (in0_im + in1_im) +
                      (INT64FLOAT)filter[i][j][1] * (in0_re - in1_re);
        }
#if USE_FIXED
        out[i * stride][0] = (int)((sum_re + 0x40000000) >> 31);
        out[i * stride][1] = (int)((sum_im + 0x40000000) >> 31);
#else
        out[i * stride][0] = sum_re;
        out[i * stride][1] = sum_im;
#endif /* USE_FIXED */
    }
}
75

76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168
static void ps_hybrid_analysis_ileave_c(INTFLOAT (*out)[32][2], INTFLOAT L[2][38][64],
                                      int i, int len)
{
    int j;

    for (; i < 64; i++) {
        for (j = 0; j < len; j++) {
            out[i][j][0] = L[0][j][i];
            out[i][j][1] = L[1][j][i];
        }
    }
}

static void ps_hybrid_synthesis_deint_c(INTFLOAT out[2][38][64],
                                      INTFLOAT (*in)[32][2],
                                      int i, int len)
{
    int n;

    for (; i < 64; i++) {
        for (n = 0; n < len; n++) {
            out[0][n][i] = in[i][n][0];
            out[1][n][i] = in[i][n][1];
        }
    }
}

static void ps_decorrelate_c(INTFLOAT (*out)[2], INTFLOAT (*delay)[2],
                             INTFLOAT (*ap_delay)[PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2],
                             const INTFLOAT phi_fract[2], const INTFLOAT (*Q_fract)[2],
                             const INTFLOAT *transient_gain,
                             INTFLOAT g_decay_slope,
                             int len)
{
    static const INTFLOAT a[] = { Q31(0.65143905753106f),
                               Q31(0.56471812200776f),
                               Q31(0.48954165955695f) };
    INTFLOAT ag[PS_AP_LINKS];
    int m, n;

    for (m = 0; m < PS_AP_LINKS; m++)
        ag[m] = AAC_MUL30(a[m], g_decay_slope);

    for (n = 0; n < len; n++) {
        INTFLOAT in_re = AAC_MSUB30(delay[n][0], phi_fract[0], delay[n][1], phi_fract[1]);
        INTFLOAT in_im = AAC_MADD30(delay[n][0], phi_fract[1], delay[n][1], phi_fract[0]);
        for (m = 0; m < PS_AP_LINKS; m++) {
            INTFLOAT a_re                = AAC_MUL31(ag[m], in_re);
            INTFLOAT a_im                = AAC_MUL31(ag[m], in_im);
            INTFLOAT link_delay_re       = ap_delay[m][n+2-m][0];
            INTFLOAT link_delay_im       = ap_delay[m][n+2-m][1];
            INTFLOAT fractional_delay_re = Q_fract[m][0];
            INTFLOAT fractional_delay_im = Q_fract[m][1];
            INTFLOAT apd_re = in_re;
            INTFLOAT apd_im = in_im;
            in_re = AAC_MSUB30(link_delay_re, fractional_delay_re,
                    link_delay_im, fractional_delay_im);
            in_re -= a_re;
            in_im = AAC_MADD30(link_delay_re, fractional_delay_im,
                    link_delay_im, fractional_delay_re);
            in_im -= a_im;
            ap_delay[m][n+5][0] = apd_re + AAC_MUL31(ag[m], in_re);
            ap_delay[m][n+5][1] = apd_im + AAC_MUL31(ag[m], in_im);
        }
        out[n][0] = AAC_MUL16(transient_gain[n], in_re);
        out[n][1] = AAC_MUL16(transient_gain[n], in_im);
    }
}

static void ps_stereo_interpolate_c(INTFLOAT (*l)[2], INTFLOAT (*r)[2],
                                    INTFLOAT h[2][4], INTFLOAT h_step[2][4],
                                    int len)
{
    INTFLOAT h0 = h[0][0];
    INTFLOAT h1 = h[0][1];
    INTFLOAT h2 = h[0][2];
    INTFLOAT h3 = h[0][3];
    INTFLOAT hs0 = h_step[0][0];
    INTFLOAT hs1 = h_step[0][1];
    INTFLOAT hs2 = h_step[0][2];
    INTFLOAT hs3 = h_step[0][3];
    int n;

    for (n = 0; n < len; n++) {
        //l is s, r is d
        INTFLOAT l_re = l[n][0];
        INTFLOAT l_im = l[n][1];
        INTFLOAT r_re = r[n][0];
        INTFLOAT r_im = r[n][1];
        h0 += hs0;
        h1 += hs1;
        h2 += hs2;
        h3 += hs3;
169 170 171 172
        l[n][0] = AAC_MADD30(h0, l_re, h2, r_re);
        l[n][1] = AAC_MADD30(h0, l_im, h2, r_im);
        r[n][0] = AAC_MADD30(h1, l_re, h3, r_re);
        r[n][1] = AAC_MADD30(h1, l_im, h3, r_im);
173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225
    }
}

static void ps_stereo_interpolate_ipdopd_c(INTFLOAT (*l)[2], INTFLOAT (*r)[2],
                                           INTFLOAT h[2][4], INTFLOAT h_step[2][4],
                                           int len)
{
    INTFLOAT h00  = h[0][0],      h10  = h[1][0];
    INTFLOAT h01  = h[0][1],      h11  = h[1][1];
    INTFLOAT h02  = h[0][2],      h12  = h[1][2];
    INTFLOAT h03  = h[0][3],      h13  = h[1][3];
    INTFLOAT hs00 = h_step[0][0], hs10 = h_step[1][0];
    INTFLOAT hs01 = h_step[0][1], hs11 = h_step[1][1];
    INTFLOAT hs02 = h_step[0][2], hs12 = h_step[1][2];
    INTFLOAT hs03 = h_step[0][3], hs13 = h_step[1][3];
    int n;

    for (n = 0; n < len; n++) {
        //l is s, r is d
        INTFLOAT l_re = l[n][0];
        INTFLOAT l_im = l[n][1];
        INTFLOAT r_re = r[n][0];
        INTFLOAT r_im = r[n][1];
        h00 += hs00;
        h01 += hs01;
        h02 += hs02;
        h03 += hs03;
        h10 += hs10;
        h11 += hs11;
        h12 += hs12;
        h13 += hs13;

        l[n][0] = AAC_MSUB30_V8(h00, l_re, h02, r_re, h10, l_im, h12, r_im);
        l[n][1] = AAC_MADD30_V8(h00, l_im, h02, r_im, h10, l_re, h12, r_re);
        r[n][0] = AAC_MSUB30_V8(h01, l_re, h03, r_re, h11, l_im, h13, r_im);
        r[n][1] = AAC_MADD30_V8(h01, l_im, h03, r_im, h11, l_re, h13, r_re);
    }
}

av_cold void AAC_RENAME(ff_psdsp_init)(PSDSPContext *s)
{
    s->add_squares            = ps_add_squares_c;
    s->mul_pair_single        = ps_mul_pair_single_c;
    s->hybrid_analysis        = ps_hybrid_analysis_c;
    s->hybrid_analysis_ileave = ps_hybrid_analysis_ileave_c;
    s->hybrid_synthesis_deint = ps_hybrid_synthesis_deint_c;
    s->decorrelate            = ps_decorrelate_c;
    s->stereo_interpolate[0]  = ps_stereo_interpolate_c;
    s->stereo_interpolate[1]  = ps_stereo_interpolate_ipdopd_c;

#if !USE_FIXED
    if (ARCH_ARM)
        ff_psdsp_init_arm(s);
226 227
    if (ARCH_AARCH64)
        ff_psdsp_init_aarch64(s);
228 229
    if (ARCH_MIPS)
        ff_psdsp_init_mips(s);
230 231
    if (ARCH_X86)
        ff_psdsp_init_x86(s);
232 233
#endif /* !USE_FIXED */
}