summaryrefslogtreecommitdiff
path: root/libavcodec/aacpsdsp_template.c (plain)
blob: 3049ce8b79e76393731a119b5e2d0978543f9aff
1/*
2 * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
3 *
4 * This file is part of FFmpeg.
5 *
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.
10 *
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.
15 *
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
19 *
20 * Note: Rounding-to-nearest used unless otherwise stated
21 *
22 */
23#include <stdint.h>
24
25#include "config.h"
26#include "libavutil/attributes.h"
27#include "aacpsdsp.h"
28
29static void ps_add_squares_c(INTFLOAT *dst, const INTFLOAT (*src)[2], int n)
30{
31 int i;
32 for (i = 0; i < n; i++)
33 dst[i] += AAC_MADD28(src[i][0], src[i][0], src[i][1], src[i][1]);
34}
35
36static void ps_mul_pair_single_c(INTFLOAT (*dst)[2], INTFLOAT (*src0)[2], INTFLOAT *src1,
37 int n)
38{
39 int i;
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]);
43 }
44}
45
46static void ps_hybrid_analysis_c(INTFLOAT (*out)[2], INTFLOAT (*in)[2],
47 const INTFLOAT (*filter)[8][2],
48 int stride, int n)
49{
50 int i, j;
51
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];
55
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);
65 }
66#if USE_FIXED
67 out[i * stride][0] = (int)((sum_re + 0x40000000) >> 31);
68 out[i * stride][1] = (int)((sum_im + 0x40000000) >> 31);
69#else
70 out[i * stride][0] = sum_re;
71 out[i * stride][1] = sum_im;
72#endif /* USE_FIXED */
73 }
74}
75static void ps_hybrid_analysis_ileave_c(INTFLOAT (*out)[32][2], INTFLOAT L[2][38][64],
76 int i, int len)
77{
78 int j;
79
80 for (; i < 64; i++) {
81 for (j = 0; j < len; j++) {
82 out[i][j][0] = L[0][j][i];
83 out[i][j][1] = L[1][j][i];
84 }
85 }
86}
87
88static void ps_hybrid_synthesis_deint_c(INTFLOAT out[2][38][64],
89 INTFLOAT (*in)[32][2],
90 int i, int len)
91{
92 int n;
93
94 for (; i < 64; i++) {
95 for (n = 0; n < len; n++) {
96 out[0][n][i] = in[i][n][0];
97 out[1][n][i] = in[i][n][1];
98 }
99 }
100}
101
102static void ps_decorrelate_c(INTFLOAT (*out)[2], INTFLOAT (*delay)[2],
103 INTFLOAT (*ap_delay)[PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2],
104 const INTFLOAT phi_fract[2], const INTFLOAT (*Q_fract)[2],
105 const INTFLOAT *transient_gain,
106 INTFLOAT g_decay_slope,
107 int len)
108{
109 static const INTFLOAT a[] = { Q31(0.65143905753106f),
110 Q31(0.56471812200776f),
111 Q31(0.48954165955695f) };
112 INTFLOAT ag[PS_AP_LINKS];
113 int m, n;
114
115 for (m = 0; m < PS_AP_LINKS; m++)
116 ag[m] = AAC_MUL30(a[m], g_decay_slope);
117
118 for (n = 0; n < len; n++) {
119 INTFLOAT in_re = AAC_MSUB30(delay[n][0], phi_fract[0], delay[n][1], phi_fract[1]);
120 INTFLOAT in_im = AAC_MADD30(delay[n][0], phi_fract[1], delay[n][1], phi_fract[0]);
121 for (m = 0; m < PS_AP_LINKS; m++) {
122 INTFLOAT a_re = AAC_MUL31(ag[m], in_re);
123 INTFLOAT a_im = AAC_MUL31(ag[m], in_im);
124 INTFLOAT link_delay_re = ap_delay[m][n+2-m][0];
125 INTFLOAT link_delay_im = ap_delay[m][n+2-m][1];
126 INTFLOAT fractional_delay_re = Q_fract[m][0];
127 INTFLOAT fractional_delay_im = Q_fract[m][1];
128 INTFLOAT apd_re = in_re;
129 INTFLOAT apd_im = in_im;
130 in_re = AAC_MSUB30(link_delay_re, fractional_delay_re,
131 link_delay_im, fractional_delay_im);
132 in_re -= a_re;
133 in_im = AAC_MADD30(link_delay_re, fractional_delay_im,
134 link_delay_im, fractional_delay_re);
135 in_im -= a_im;
136 ap_delay[m][n+5][0] = apd_re + AAC_MUL31(ag[m], in_re);
137 ap_delay[m][n+5][1] = apd_im + AAC_MUL31(ag[m], in_im);
138 }
139 out[n][0] = AAC_MUL16(transient_gain[n], in_re);
140 out[n][1] = AAC_MUL16(transient_gain[n], in_im);
141 }
142}
143
144static void ps_stereo_interpolate_c(INTFLOAT (*l)[2], INTFLOAT (*r)[2],
145 INTFLOAT h[2][4], INTFLOAT h_step[2][4],
146 int len)
147{
148 INTFLOAT h0 = h[0][0];
149 INTFLOAT h1 = h[0][1];
150 INTFLOAT h2 = h[0][2];
151 INTFLOAT h3 = h[0][3];
152 INTFLOAT hs0 = h_step[0][0];
153 INTFLOAT hs1 = h_step[0][1];
154 INTFLOAT hs2 = h_step[0][2];
155 INTFLOAT hs3 = h_step[0][3];
156 int n;
157
158 for (n = 0; n < len; n++) {
159 //l is s, r is d
160 INTFLOAT l_re = l[n][0];
161 INTFLOAT l_im = l[n][1];
162 INTFLOAT r_re = r[n][0];
163 INTFLOAT r_im = r[n][1];
164 h0 += hs0;
165 h1 += hs1;
166 h2 += hs2;
167 h3 += hs3;
168 l[n][0] = AAC_MADD30(h0, l_re, h2, r_re);
169 l[n][1] = AAC_MADD30(h0, l_im, h2, r_im);
170 r[n][0] = AAC_MADD30(h1, l_re, h3, r_re);
171 r[n][1] = AAC_MADD30(h1, l_im, h3, r_im);
172 }
173}
174
175static void ps_stereo_interpolate_ipdopd_c(INTFLOAT (*l)[2], INTFLOAT (*r)[2],
176 INTFLOAT h[2][4], INTFLOAT h_step[2][4],
177 int len)
178{
179 INTFLOAT h00 = h[0][0], h10 = h[1][0];
180 INTFLOAT h01 = h[0][1], h11 = h[1][1];
181 INTFLOAT h02 = h[0][2], h12 = h[1][2];
182 INTFLOAT h03 = h[0][3], h13 = h[1][3];
183 INTFLOAT hs00 = h_step[0][0], hs10 = h_step[1][0];
184 INTFLOAT hs01 = h_step[0][1], hs11 = h_step[1][1];
185 INTFLOAT hs02 = h_step[0][2], hs12 = h_step[1][2];
186 INTFLOAT hs03 = h_step[0][3], hs13 = h_step[1][3];
187 int n;
188
189 for (n = 0; n < len; n++) {
190 //l is s, r is d
191 INTFLOAT l_re = l[n][0];
192 INTFLOAT l_im = l[n][1];
193 INTFLOAT r_re = r[n][0];
194 INTFLOAT r_im = r[n][1];
195 h00 += hs00;
196 h01 += hs01;
197 h02 += hs02;
198 h03 += hs03;
199 h10 += hs10;
200 h11 += hs11;
201 h12 += hs12;
202 h13 += hs13;
203
204 l[n][0] = AAC_MSUB30_V8(h00, l_re, h02, r_re, h10, l_im, h12, r_im);
205 l[n][1] = AAC_MADD30_V8(h00, l_im, h02, r_im, h10, l_re, h12, r_re);
206 r[n][0] = AAC_MSUB30_V8(h01, l_re, h03, r_re, h11, l_im, h13, r_im);
207 r[n][1] = AAC_MADD30_V8(h01, l_im, h03, r_im, h11, l_re, h13, r_re);
208 }
209}
210
211av_cold void AAC_RENAME(ff_psdsp_init)(PSDSPContext *s)
212{
213 s->add_squares = ps_add_squares_c;
214 s->mul_pair_single = ps_mul_pair_single_c;
215 s->hybrid_analysis = ps_hybrid_analysis_c;
216 s->hybrid_analysis_ileave = ps_hybrid_analysis_ileave_c;
217 s->hybrid_synthesis_deint = ps_hybrid_synthesis_deint_c;
218 s->decorrelate = ps_decorrelate_c;
219 s->stereo_interpolate[0] = ps_stereo_interpolate_c;
220 s->stereo_interpolate[1] = ps_stereo_interpolate_ipdopd_c;
221
222#if !USE_FIXED
223 if (ARCH_ARM)
224 ff_psdsp_init_arm(s);
225 if (ARCH_MIPS)
226 ff_psdsp_init_mips(s);
227 if (ARCH_X86)
228 ff_psdsp_init_x86(s);
229#endif /* !USE_FIXED */
230}
231
generated by cgit at 2024-05-17 18:49:21 (GMT)