diff options
Diffstat (limited to 'ffmpeg1/libavcodec/aacps_tablegen.h')
| -rw-r--r-- | ffmpeg1/libavcodec/aacps_tablegen.h | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/ffmpeg1/libavcodec/aacps_tablegen.h b/ffmpeg1/libavcodec/aacps_tablegen.h deleted file mode 100644 index 1f9c326..0000000 --- a/ffmpeg1/libavcodec/aacps_tablegen.h +++ /dev/null @@ -1,215 +0,0 @@ -/* - * Header file for hardcoded Parametric Stereo tables - * - * 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 - */ - -#ifndef AACPS_TABLEGEN_H -#define AACPS_TABLEGEN_H - -#include <math.h> -#include <stdint.h> - -#if CONFIG_HARDCODED_TABLES -#define ps_tableinit() -#include "libavcodec/aacps_tables.h" -#else -#include "libavutil/common.h" -#include "libavutil/libm.h" -#include "libavutil/mathematics.h" -#include "libavutil/mem.h" -#define NR_ALLPASS_BANDS20 30 -#define NR_ALLPASS_BANDS34 50 -#define PS_AP_LINKS 3 -static float pd_re_smooth[8*8*8]; -static float pd_im_smooth[8*8*8]; -static float HA[46][8][4]; -static float HB[46][8][4]; -static DECLARE_ALIGNED(16, float, f20_0_8) [ 8][8][2]; -static DECLARE_ALIGNED(16, float, f34_0_12)[12][8][2]; -static DECLARE_ALIGNED(16, float, f34_1_8) [ 8][8][2]; -static DECLARE_ALIGNED(16, float, f34_2_4) [ 4][8][2]; -static DECLARE_ALIGNED(16, float, Q_fract_allpass)[2][50][3][2]; -static DECLARE_ALIGNED(16, float, phi_fract)[2][50][2]; - -static const float g0_Q8[] = { - 0.00746082949812f, 0.02270420949825f, 0.04546865930473f, 0.07266113929591f, - 0.09885108575264f, 0.11793710567217f, 0.125f -}; - -static const float g0_Q12[] = { - 0.04081179924692f, 0.03812810994926f, 0.05144908135699f, 0.06399831151592f, - 0.07428313801106f, 0.08100347892914f, 0.08333333333333f -}; - -static const float g1_Q8[] = { - 0.01565675600122f, 0.03752716391991f, 0.05417891378782f, 0.08417044116767f, - 0.10307344158036f, 0.12222452249753f, 0.125f -}; - -static const float g2_Q4[] = { - -0.05908211155639f, -0.04871498374946f, 0.0f, 0.07778723915851f, - 0.16486303567403f, 0.23279856662996f, 0.25f -}; - -static void make_filters_from_proto(float (*filter)[8][2], const float *proto, int bands) -{ - int q, n; - for (q = 0; q < bands; q++) { - for (n = 0; n < 7; n++) { - double theta = 2 * M_PI * (q + 0.5) * (n - 6) / bands; - filter[q][n][0] = proto[n] * cos(theta); - filter[q][n][1] = proto[n] * -sin(theta); - } - } -} - -static void ps_tableinit(void) -{ - static const float ipdopd_sin[] = { 0, M_SQRT1_2, 1, M_SQRT1_2, 0, -M_SQRT1_2, -1, -M_SQRT1_2 }; - static const float ipdopd_cos[] = { 1, M_SQRT1_2, 0, -M_SQRT1_2, -1, -M_SQRT1_2, 0, M_SQRT1_2 }; - int pd0, pd1, pd2; - - static const float iid_par_dequant[] = { - //iid_par_dequant_default - 0.05623413251903, 0.12589254117942, 0.19952623149689, 0.31622776601684, - 0.44668359215096, 0.63095734448019, 0.79432823472428, 1, - 1.25892541179417, 1.58489319246111, 2.23872113856834, 3.16227766016838, - 5.01187233627272, 7.94328234724282, 17.7827941003892, - //iid_par_dequant_fine - 0.00316227766017, 0.00562341325190, 0.01, 0.01778279410039, - 0.03162277660168, 0.05623413251903, 0.07943282347243, 0.11220184543020, - 0.15848931924611, 0.22387211385683, 0.31622776601684, 0.39810717055350, - 0.50118723362727, 0.63095734448019, 0.79432823472428, 1, - 1.25892541179417, 1.58489319246111, 1.99526231496888, 2.51188643150958, - 3.16227766016838, 4.46683592150963, 6.30957344480193, 8.91250938133745, - 12.5892541179417, 17.7827941003892, 31.6227766016838, 56.2341325190349, - 100, 177.827941003892, 316.227766016837, - }; - static const float icc_invq[] = { - 1, 0.937, 0.84118, 0.60092, 0.36764, 0, -0.589, -1 - }; - static const float acos_icc_invq[] = { - 0, 0.35685527, 0.57133466, 0.92614472, 1.1943263, M_PI/2, 2.2006171, M_PI - }; - int iid, icc; - - int k, m; - static const int8_t f_center_20[] = { - -3, -1, 1, 3, 5, 7, 10, 14, 18, 22, - }; - static const int8_t f_center_34[] = { - 2, 6, 10, 14, 18, 22, 26, 30, - 34,-10, -6, -2, 51, 57, 15, 21, - 27, 33, 39, 45, 54, 66, 78, 42, - 102, 66, 78, 90,102,114,126, 90, - }; - static const float fractional_delay_links[] = { 0.43f, 0.75f, 0.347f }; - const float fractional_delay_gain = 0.39f; - - for (pd0 = 0; pd0 < 8; pd0++) { - float pd0_re = ipdopd_cos[pd0]; - float pd0_im = ipdopd_sin[pd0]; - for (pd1 = 0; pd1 < 8; pd1++) { - float pd1_re = ipdopd_cos[pd1]; - float pd1_im = ipdopd_sin[pd1]; - for (pd2 = 0; pd2 < 8; pd2++) { - float pd2_re = ipdopd_cos[pd2]; - float pd2_im = ipdopd_sin[pd2]; - float re_smooth = 0.25f * pd0_re + 0.5f * pd1_re + pd2_re; - float im_smooth = 0.25f * pd0_im + 0.5f * pd1_im + pd2_im; - float pd_mag = 1 / sqrt(im_smooth * im_smooth + re_smooth * re_smooth); - pd_re_smooth[pd0*64+pd1*8+pd2] = re_smooth * pd_mag; - pd_im_smooth[pd0*64+pd1*8+pd2] = im_smooth * pd_mag; - } - } - } - - for (iid = 0; iid < 46; iid++) { - float c = iid_par_dequant[iid]; ///< Linear Inter-channel Intensity Difference - float c1 = (float)M_SQRT2 / sqrtf(1.0f + c*c); - float c2 = c * c1; - for (icc = 0; icc < 8; icc++) { - /*if (PS_BASELINE || ps->icc_mode < 3)*/ { - float alpha = 0.5f * acos_icc_invq[icc]; - float beta = alpha * (c1 - c2) * (float)M_SQRT1_2; - HA[iid][icc][0] = c2 * cosf(beta + alpha); - HA[iid][icc][1] = c1 * cosf(beta - alpha); - HA[iid][icc][2] = c2 * sinf(beta + alpha); - HA[iid][icc][3] = c1 * sinf(beta - alpha); - } /* else */ { - float alpha, gamma, mu, rho; - float alpha_c, alpha_s, gamma_c, gamma_s; - rho = FFMAX(icc_invq[icc], 0.05f); - alpha = 0.5f * atan2f(2.0f * c * rho, c*c - 1.0f); - mu = c + 1.0f / c; - mu = sqrtf(1 + (4 * rho * rho - 4)/(mu * mu)); - gamma = atanf(sqrtf((1.0f - mu)/(1.0f + mu))); - if (alpha < 0) alpha += M_PI/2; - alpha_c = cosf(alpha); - alpha_s = sinf(alpha); - gamma_c = cosf(gamma); - gamma_s = sinf(gamma); - HB[iid][icc][0] = M_SQRT2 * alpha_c * gamma_c; - HB[iid][icc][1] = M_SQRT2 * alpha_s * gamma_c; - HB[iid][icc][2] = -M_SQRT2 * alpha_s * gamma_s; - HB[iid][icc][3] = M_SQRT2 * alpha_c * gamma_s; - } - } - } - - for (k = 0; k < NR_ALLPASS_BANDS20; k++) { - double f_center, theta; - if (k < FF_ARRAY_ELEMS(f_center_20)) - f_center = f_center_20[k] * 0.125; - else - f_center = k - 6.5f; - for (m = 0; m < PS_AP_LINKS; m++) { - theta = -M_PI * fractional_delay_links[m] * f_center; - Q_fract_allpass[0][k][m][0] = cos(theta); - Q_fract_allpass[0][k][m][1] = sin(theta); - } - theta = -M_PI*fractional_delay_gain*f_center; - phi_fract[0][k][0] = cos(theta); - phi_fract[0][k][1] = sin(theta); - } - for (k = 0; k < NR_ALLPASS_BANDS34; k++) { - double f_center, theta; - if (k < FF_ARRAY_ELEMS(f_center_34)) - f_center = f_center_34[k] / 24.; - else - f_center = k - 26.5f; - for (m = 0; m < PS_AP_LINKS; m++) { - theta = -M_PI * fractional_delay_links[m] * f_center; - Q_fract_allpass[1][k][m][0] = cos(theta); - Q_fract_allpass[1][k][m][1] = sin(theta); - } - theta = -M_PI*fractional_delay_gain*f_center; - phi_fract[1][k][0] = cos(theta); - phi_fract[1][k][1] = sin(theta); - } - - make_filters_from_proto(f20_0_8, g0_Q8, 8); - make_filters_from_proto(f34_0_12, g0_Q12, 12); - make_filters_from_proto(f34_1_8, g1_Q8, 8); - make_filters_from_proto(f34_2_4, g2_Q4, 4); -} -#endif /* CONFIG_HARDCODED_TABLES */ - -#endif /* AACPS_TABLEGEN_H */ |