2 * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 * Note: Rounding-to-nearest used unless otherwise stated
26 #include "libavutil/attributes.h"
29 static void ps_add_squares_c(INTFLOAT *dst, const INTFLOAT (*src)[2], int n)
32 for (i = 0; i < n; i++)
33 dst[i] += (UINTFLOAT)AAC_MADD28(src[i][0], src[i][0], src[i][1], src[i][1]);
36 static void ps_mul_pair_single_c(INTFLOAT (*dst)[2], INTFLOAT (*src0)[2], INTFLOAT *src1,
40 for (i = 0; i < n; i++) {
41 dst[i][0] = AAC_MUL16(src0[i][0], src1[i]);
42 dst[i][1] = AAC_MUL16(src0[i][1], src1[i]);
46 static void ps_hybrid_analysis_c(INTFLOAT (*out)[2], INTFLOAT (*in)[2],
47 const INTFLOAT (*filter)[8][2],
48 ptrdiff_t stride, int n)
52 for (i = 0; i < n; i++) {
53 INT64FLOAT sum_re = (INT64FLOAT)filter[i][6][0] * in[6][0];
54 INT64FLOAT sum_im = (INT64FLOAT)filter[i][6][0] * in[6][1];
56 for (j = 0; j < 6; j++) {
57 INTFLOAT in0_re = in[j][0];
58 INTFLOAT in0_im = in[j][1];
59 INTFLOAT in1_re = in[12-j][0];
60 INTFLOAT in1_im = in[12-j][1];
61 sum_re += (INT64FLOAT)filter[i][j][0] * (in0_re + in1_re) -
62 (INT64FLOAT)filter[i][j][1] * (in0_im - in1_im);
63 sum_im += (INT64FLOAT)filter[i][j][0] * (in0_im + in1_im) +
64 (INT64FLOAT)filter[i][j][1] * (in0_re - in1_re);
67 out[i * stride][0] = (int)((sum_re + 0x40000000) >> 31);
68 out[i * stride][1] = (int)((sum_im + 0x40000000) >> 31);
70 out[i * stride][0] = sum_re;
71 out[i * stride][1] = sum_im;
72 #endif /* USE_FIXED */
76 static void ps_hybrid_analysis_ileave_c(INTFLOAT (*out)[32][2], INTFLOAT L[2][38][64],
82 for (j = 0; j < len; j++) {
83 out[i][j][0] = L[0][j][i];
84 out[i][j][1] = L[1][j][i];
89 static void ps_hybrid_synthesis_deint_c(INTFLOAT out[2][38][64],
90 INTFLOAT (*in)[32][2],
96 for (n = 0; n < len; n++) {
97 out[0][n][i] = in[i][n][0];
98 out[1][n][i] = in[i][n][1];
103 static void ps_decorrelate_c(INTFLOAT (*out)[2], INTFLOAT (*delay)[2],
104 INTFLOAT (*ap_delay)[PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2],
105 const INTFLOAT phi_fract[2], const INTFLOAT (*Q_fract)[2],
106 const INTFLOAT *transient_gain,
107 INTFLOAT g_decay_slope,
110 static const INTFLOAT a[] = { Q31(0.65143905753106f),
111 Q31(0.56471812200776f),
112 Q31(0.48954165955695f) };
113 INTFLOAT ag[PS_AP_LINKS];
116 for (m = 0; m < PS_AP_LINKS; m++)
117 ag[m] = AAC_MUL30(a[m], g_decay_slope);
119 for (n = 0; n < len; n++) {
120 INTFLOAT in_re = AAC_MSUB30(delay[n][0], phi_fract[0], delay[n][1], phi_fract[1]);
121 INTFLOAT in_im = AAC_MADD30(delay[n][0], phi_fract[1], delay[n][1], phi_fract[0]);
122 for (m = 0; m < PS_AP_LINKS; m++) {
123 INTFLOAT a_re = AAC_MUL31(ag[m], in_re);
124 INTFLOAT a_im = AAC_MUL31(ag[m], in_im);
125 INTFLOAT link_delay_re = ap_delay[m][n+2-m][0];
126 INTFLOAT link_delay_im = ap_delay[m][n+2-m][1];
127 INTFLOAT fractional_delay_re = Q_fract[m][0];
128 INTFLOAT fractional_delay_im = Q_fract[m][1];
129 INTFLOAT apd_re = in_re;
130 INTFLOAT apd_im = in_im;
131 in_re = AAC_MSUB30(link_delay_re, fractional_delay_re,
132 link_delay_im, fractional_delay_im);
133 in_re -= (UINTFLOAT)a_re;
134 in_im = AAC_MADD30(link_delay_re, fractional_delay_im,
135 link_delay_im, fractional_delay_re);
136 in_im -= (UINTFLOAT)a_im;
137 ap_delay[m][n+5][0] = apd_re + (UINTFLOAT)AAC_MUL31(ag[m], in_re);
138 ap_delay[m][n+5][1] = apd_im + (UINTFLOAT)AAC_MUL31(ag[m], in_im);
140 out[n][0] = AAC_MUL16(transient_gain[n], in_re);
141 out[n][1] = AAC_MUL16(transient_gain[n], in_im);
145 static void ps_stereo_interpolate_c(INTFLOAT (*l)[2], INTFLOAT (*r)[2],
146 INTFLOAT h[2][4], INTFLOAT h_step[2][4],
149 INTFLOAT h0 = h[0][0];
150 INTFLOAT h1 = h[0][1];
151 INTFLOAT h2 = h[0][2];
152 INTFLOAT h3 = h[0][3];
153 INTFLOAT hs0 = h_step[0][0];
154 INTFLOAT hs1 = h_step[0][1];
155 INTFLOAT hs2 = h_step[0][2];
156 INTFLOAT hs3 = h_step[0][3];
159 for (n = 0; n < len; n++) {
161 INTFLOAT l_re = l[n][0];
162 INTFLOAT l_im = l[n][1];
163 INTFLOAT r_re = r[n][0];
164 INTFLOAT r_im = r[n][1];
169 l[n][0] = AAC_MADD30(h0, l_re, h2, r_re);
170 l[n][1] = AAC_MADD30(h0, l_im, h2, r_im);
171 r[n][0] = AAC_MADD30(h1, l_re, h3, r_re);
172 r[n][1] = AAC_MADD30(h1, l_im, h3, r_im);
176 static void ps_stereo_interpolate_ipdopd_c(INTFLOAT (*l)[2], INTFLOAT (*r)[2],
177 INTFLOAT h[2][4], INTFLOAT h_step[2][4],
180 INTFLOAT h00 = h[0][0], h10 = h[1][0];
181 INTFLOAT h01 = h[0][1], h11 = h[1][1];
182 INTFLOAT h02 = h[0][2], h12 = h[1][2];
183 INTFLOAT h03 = h[0][3], h13 = h[1][3];
184 INTFLOAT hs00 = h_step[0][0], hs10 = h_step[1][0];
185 INTFLOAT hs01 = h_step[0][1], hs11 = h_step[1][1];
186 INTFLOAT hs02 = h_step[0][2], hs12 = h_step[1][2];
187 INTFLOAT hs03 = h_step[0][3], hs13 = h_step[1][3];
190 for (n = 0; n < len; n++) {
192 INTFLOAT l_re = l[n][0];
193 INTFLOAT l_im = l[n][1];
194 INTFLOAT r_re = r[n][0];
195 INTFLOAT r_im = r[n][1];
205 l[n][0] = AAC_MSUB30_V8(h00, l_re, h02, r_re, h10, l_im, h12, r_im);
206 l[n][1] = AAC_MADD30_V8(h00, l_im, h02, r_im, h10, l_re, h12, r_re);
207 r[n][0] = AAC_MSUB30_V8(h01, l_re, h03, r_re, h11, l_im, h13, r_im);
208 r[n][1] = AAC_MADD30_V8(h01, l_im, h03, r_im, h11, l_re, h13, r_re);
212 av_cold void AAC_RENAME(ff_psdsp_init)(PSDSPContext *s)
214 s->add_squares = ps_add_squares_c;
215 s->mul_pair_single = ps_mul_pair_single_c;
216 s->hybrid_analysis = ps_hybrid_analysis_c;
217 s->hybrid_analysis_ileave = ps_hybrid_analysis_ileave_c;
218 s->hybrid_synthesis_deint = ps_hybrid_synthesis_deint_c;
219 s->decorrelate = ps_decorrelate_c;
220 s->stereo_interpolate[0] = ps_stereo_interpolate_c;
221 s->stereo_interpolate[1] = ps_stereo_interpolate_ipdopd_c;
225 ff_psdsp_init_arm(s);
227 ff_psdsp_init_aarch64(s);
229 ff_psdsp_init_mips(s);
231 ff_psdsp_init_x86(s);
232 #endif /* !USE_FIXED */