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1 | /* | ||
2 | * Copyright (C) 2016 foo86 | ||
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 | |||
21 | #include "libavutil/mem_internal.h" | ||
22 | |||
23 | #include "dcadsp.h" | ||
24 | #include "dcamath.h" | ||
25 | |||
26 | 9771 | static void decode_hf_c(int32_t **dst, | |
27 | const int32_t *vq_index, | ||
28 | const int8_t hf_vq[1024][32], | ||
29 | int32_t scale_factors[32][2], | ||
30 | ptrdiff_t sb_start, ptrdiff_t sb_end, | ||
31 | ptrdiff_t ofs, ptrdiff_t len) | ||
32 | { | ||
33 | int i, j; | ||
34 | |||
35 |
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53245 | for (i = sb_start; i < sb_end; i++) { |
36 | 43474 | const int8_t *coeff = hf_vq[vq_index[i]]; | |
37 | 43474 | int32_t scale = scale_factors[i][0]; | |
38 |
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739058 | for (j = 0; j < len; j++) |
39 | 695584 | dst[i][j + ofs] = clip23(coeff[j] * scale + (1 << 3) >> 4); | |
40 | } | ||
41 | 9771 | } | |
42 | |||
43 | 91 | static void decode_joint_c(int32_t **dst, int32_t **src, | |
44 | const int32_t *scale_factors, | ||
45 | ptrdiff_t sb_start, ptrdiff_t sb_end, | ||
46 | ptrdiff_t ofs, ptrdiff_t len) | ||
47 | { | ||
48 | int i, j; | ||
49 | |||
50 |
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2632 | for (i = sb_start; i < sb_end; i++) { |
51 | 2541 | int32_t scale = scale_factors[i]; | |
52 |
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43197 | for (j = 0; j < len; j++) |
53 | 40656 | dst[i][j + ofs] = clip23(mul17(src[i][j + ofs], scale)); | |
54 | } | ||
55 | 91 | } | |
56 | |||
57 | 606 | static void lfe_fir_float_c(float *pcm_samples, int32_t *lfe_samples, | |
58 | const float *filter_coeff, ptrdiff_t npcmblocks, | ||
59 | int dec_select) | ||
60 | { | ||
61 | // Select decimation factor | ||
62 | 606 | int factor = 64 << dec_select; | |
63 | 606 | int ncoeffs = 8 >> dec_select; | |
64 | 606 | int nlfesamples = npcmblocks >> (dec_select + 1); | |
65 | int i, j, k; | ||
66 | |||
67 |
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5454 | for (i = 0; i < nlfesamples; i++) { |
68 | // One decimated sample generates 64 or 128 interpolated ones | ||
69 |
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159984 | for (j = 0; j < factor / 2; j++) { |
70 | 155136 | float a = 0; | |
71 | 155136 | float b = 0; | |
72 | |||
73 |
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1396224 | for (k = 0; k < ncoeffs; k++) { |
74 | 1241088 | a += filter_coeff[ j * ncoeffs + k] * lfe_samples[-k]; | |
75 | 1241088 | b += filter_coeff[255 - j * ncoeffs - k] * lfe_samples[-k]; | |
76 | } | ||
77 | |||
78 | 155136 | pcm_samples[ j] = a; | |
79 | 155136 | pcm_samples[factor / 2 + j] = b; | |
80 | } | ||
81 | |||
82 | 4848 | lfe_samples++; | |
83 | 4848 | pcm_samples += factor; | |
84 | } | ||
85 | 606 | } | |
86 | |||
87 | 606 | static void lfe_fir0_float_c(float *pcm_samples, int32_t *lfe_samples, | |
88 | const float *filter_coeff, ptrdiff_t npcmblocks) | ||
89 | { | ||
90 | 606 | lfe_fir_float_c(pcm_samples, lfe_samples, filter_coeff, npcmblocks, 0); | |
91 | 606 | } | |
92 | |||
93 | ✗ | static void lfe_fir1_float_c(float *pcm_samples, int32_t *lfe_samples, | |
94 | const float *filter_coeff, ptrdiff_t npcmblocks) | ||
95 | { | ||
96 | ✗ | lfe_fir_float_c(pcm_samples, lfe_samples, filter_coeff, npcmblocks, 1); | |
97 | ✗ | } | |
98 | |||
99 | 35 | static void lfe_x96_float_c(float *dst, const float *src, | |
100 | float *hist, ptrdiff_t len) | ||
101 | { | ||
102 | 35 | float prev = *hist; | |
103 | int i; | ||
104 | |||
105 |
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17955 | for (i = 0; i < len; i++) { |
106 | 17920 | float a = 0.25f * src[i] + 0.75f * prev; | |
107 | 17920 | float b = 0.75f * src[i] + 0.25f * prev; | |
108 | 17920 | prev = src[i]; | |
109 | 17920 | *dst++ = a; | |
110 | 17920 | *dst++ = b; | |
111 | } | ||
112 | |||
113 | 35 | *hist = prev; | |
114 | 35 | } | |
115 | |||
116 | 3150 | static void sub_qmf32_float_c(SynthFilterContext *synth, | |
117 | AVTXContext *imdct, | ||
118 | av_tx_fn imdct_fn, | ||
119 | float *pcm_samples, | ||
120 | int32_t **subband_samples_lo, | ||
121 | int32_t **subband_samples_hi, | ||
122 | float *hist1, int *offset, float *hist2, | ||
123 | const float *filter_coeff, ptrdiff_t npcmblocks, | ||
124 | float scale) | ||
125 | { | ||
126 | 3150 | LOCAL_ALIGNED_32(float, input, [32]); | |
127 | int i, j; | ||
128 | |||
129 |
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53550 | for (j = 0; j < npcmblocks; j++) { |
130 | // Load in one sample from each subband | ||
131 |
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1663200 | for (i = 0; i < 32; i++) { |
132 |
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1612800 | if ((i - 1) & 2) |
133 | 806400 | input[i] = -subband_samples_lo[i][j]; | |
134 | else | ||
135 | 806400 | input[i] = subband_samples_lo[i][j]; | |
136 | } | ||
137 | |||
138 | // One subband sample generates 32 interpolated ones | ||
139 | 50400 | synth->synth_filter_float(imdct, hist1, offset, | |
140 | hist2, filter_coeff, | ||
141 | pcm_samples, input, scale, imdct_fn); | ||
142 | 50400 | pcm_samples += 32; | |
143 | } | ||
144 | 3150 | } | |
145 | |||
146 | 196 | static void sub_qmf64_float_c(SynthFilterContext *synth, | |
147 | AVTXContext *imdct, | ||
148 | av_tx_fn imdct_fn, | ||
149 | float *pcm_samples, | ||
150 | int32_t **subband_samples_lo, | ||
151 | int32_t **subband_samples_hi, | ||
152 | float *hist1, int *offset, float *hist2, | ||
153 | const float *filter_coeff, ptrdiff_t npcmblocks, | ||
154 | float scale) | ||
155 | { | ||
156 | 196 | LOCAL_ALIGNED_32(float, input, [64]); | |
157 | int i, j; | ||
158 | |||
159 |
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196 | if (!subband_samples_hi) |
160 | ✗ | memset(&input[32], 0, sizeof(input[0]) * 32); | |
161 | |||
162 |
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3332 | for (j = 0; j < npcmblocks; j++) { |
163 | // Load in one sample from each subband | ||
164 |
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3136 | if (subband_samples_hi) { |
165 | // Full 64 subbands, first 32 are residual coded | ||
166 |
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103488 | for (i = 0; i < 32; i++) { |
167 |
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100352 | if ((i - 1) & 2) |
168 | 50176 | input[i] = -subband_samples_lo[i][j] - subband_samples_hi[i][j]; | |
169 | else | ||
170 | 50176 | input[i] = subband_samples_lo[i][j] + subband_samples_hi[i][j]; | |
171 | } | ||
172 |
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103488 | for (i = 32; i < 64; i++) { |
173 |
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100352 | if ((i - 1) & 2) |
174 | 50176 | input[i] = -subband_samples_hi[i][j]; | |
175 | else | ||
176 | 50176 | input[i] = subband_samples_hi[i][j]; | |
177 | } | ||
178 | } else { | ||
179 | // Only first 32 subbands | ||
180 | ✗ | for (i = 0; i < 32; i++) { | |
181 | ✗ | if ((i - 1) & 2) | |
182 | ✗ | input[i] = -subband_samples_lo[i][j]; | |
183 | else | ||
184 | ✗ | input[i] = subband_samples_lo[i][j]; | |
185 | } | ||
186 | } | ||
187 | |||
188 | // One subband sample generates 64 interpolated ones | ||
189 | 3136 | synth->synth_filter_float_64(imdct, hist1, offset, | |
190 | hist2, filter_coeff, | ||
191 | pcm_samples, input, scale, imdct_fn); | ||
192 | 3136 | pcm_samples += 64; | |
193 | } | ||
194 | 196 | } | |
195 | |||
196 | 1347 | static void lfe_fir_fixed_c(int32_t *pcm_samples, int32_t *lfe_samples, | |
197 | const int32_t *filter_coeff, ptrdiff_t npcmblocks) | ||
198 | { | ||
199 | // Select decimation factor | ||
200 | 1347 | int nlfesamples = npcmblocks >> 1; | |
201 | int i, j, k; | ||
202 | |||
203 |
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12123 | for (i = 0; i < nlfesamples; i++) { |
204 | // One decimated sample generates 64 interpolated ones | ||
205 |
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355608 | for (j = 0; j < 32; j++) { |
206 | 344832 | int64_t a = 0; | |
207 | 344832 | int64_t b = 0; | |
208 | |||
209 |
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3103488 | for (k = 0; k < 8; k++) { |
210 | 2758656 | a += (int64_t)filter_coeff[ j * 8 + k] * lfe_samples[-k]; | |
211 | 2758656 | b += (int64_t)filter_coeff[255 - j * 8 - k] * lfe_samples[-k]; | |
212 | } | ||
213 | |||
214 | 344832 | pcm_samples[ j] = clip23(norm23(a)); | |
215 | 344832 | pcm_samples[32 + j] = clip23(norm23(b)); | |
216 | } | ||
217 | |||
218 | 10776 | lfe_samples++; | |
219 | 10776 | pcm_samples += 64; | |
220 | } | ||
221 | 1347 | } | |
222 | |||
223 | 84 | static void lfe_x96_fixed_c(int32_t *dst, const int32_t *src, | |
224 | int32_t *hist, ptrdiff_t len) | ||
225 | { | ||
226 | 84 | int32_t prev = *hist; | |
227 | int i; | ||
228 | |||
229 |
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43092 | for (i = 0; i < len; i++) { |
230 | 43008 | int64_t a = INT64_C(2097471) * src[i] + INT64_C(6291137) * prev; | |
231 | 43008 | int64_t b = INT64_C(6291137) * src[i] + INT64_C(2097471) * prev; | |
232 | 43008 | prev = src[i]; | |
233 | 43008 | *dst++ = clip23(norm23(a)); | |
234 | 43008 | *dst++ = clip23(norm23(b)); | |
235 | } | ||
236 | |||
237 | 84 | *hist = prev; | |
238 | 84 | } | |
239 | |||
240 | 7356 | static void sub_qmf32_fixed_c(SynthFilterContext *synth, | |
241 | DCADCTContext *imdct, | ||
242 | int32_t *pcm_samples, | ||
243 | int32_t **subband_samples_lo, | ||
244 | int32_t **subband_samples_hi, | ||
245 | int32_t *hist1, int *offset, int32_t *hist2, | ||
246 | const int32_t *filter_coeff, ptrdiff_t npcmblocks) | ||
247 | { | ||
248 | 7356 | LOCAL_ALIGNED_32(int32_t, input, [32]); | |
249 | int i, j; | ||
250 | |||
251 |
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125052 | for (j = 0; j < npcmblocks; j++) { |
252 | // Load in one sample from each subband | ||
253 |
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3883968 | for (i = 0; i < 32; i++) |
254 | 3766272 | input[i] = subband_samples_lo[i][j]; | |
255 | |||
256 | // One subband sample generates 32 interpolated ones | ||
257 | 117696 | synth->synth_filter_fixed(imdct, hist1, offset, | |
258 | hist2, filter_coeff, | ||
259 | pcm_samples, input); | ||
260 | 117696 | pcm_samples += 32; | |
261 | } | ||
262 | 7356 | } | |
263 | |||
264 | 420 | static void sub_qmf64_fixed_c(SynthFilterContext *synth, | |
265 | DCADCTContext *imdct, | ||
266 | int32_t *pcm_samples, | ||
267 | int32_t **subband_samples_lo, | ||
268 | int32_t **subband_samples_hi, | ||
269 | int32_t *hist1, int *offset, int32_t *hist2, | ||
270 | const int32_t *filter_coeff, ptrdiff_t npcmblocks) | ||
271 | { | ||
272 | 420 | LOCAL_ALIGNED_32(int32_t, input, [64]); | |
273 | int i, j; | ||
274 | |||
275 |
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420 | if (!subband_samples_hi) |
276 | 420 | memset(&input[32], 0, sizeof(input[0]) * 32); | |
277 | |||
278 |
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7140 | for (j = 0; j < npcmblocks; j++) { |
279 | // Load in one sample from each subband | ||
280 |
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6720 | if (subband_samples_hi) { |
281 | // Full 64 subbands, first 32 are residual coded | ||
282 | ✗ | for (i = 0; i < 32; i++) | |
283 | ✗ | input[i] = subband_samples_lo[i][j] + subband_samples_hi[i][j]; | |
284 | ✗ | for (i = 32; i < 64; i++) | |
285 | ✗ | input[i] = subband_samples_hi[i][j]; | |
286 | } else { | ||
287 | // Only first 32 subbands | ||
288 |
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221760 | for (i = 0; i < 32; i++) |
289 | 215040 | input[i] = subband_samples_lo[i][j]; | |
290 | } | ||
291 | |||
292 | // One subband sample generates 64 interpolated ones | ||
293 | 6720 | synth->synth_filter_fixed_64(imdct, hist1, offset, | |
294 | hist2, filter_coeff, | ||
295 | pcm_samples, input); | ||
296 | 6720 | pcm_samples += 64; | |
297 | } | ||
298 | 420 | } | |
299 | |||
300 | 1815 | static void decor_c(int32_t *dst, const int32_t *src, int coeff, ptrdiff_t len) | |
301 | { | ||
302 | int i; | ||
303 | |||
304 |
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1031959 | for (i = 0; i < len; i++) |
305 | 1030144 | dst[i] += (SUINT)((int)(src[i] * (SUINT)coeff + (1 << 2)) >> 3); | |
306 | 1815 | } | |
307 | |||
308 | ✗ | static void dmix_sub_xch_c(int32_t *dst1, int32_t *dst2, | |
309 | const int32_t *src, ptrdiff_t len) | ||
310 | { | ||
311 | int i; | ||
312 | |||
313 | ✗ | for (i = 0; i < len; i++) { | |
314 | ✗ | int32_t cs = mul23(src[i], 5931520 /* M_SQRT1_2 * (1 << 23) */); | |
315 | ✗ | dst1[i] -= cs; | |
316 | ✗ | dst2[i] -= cs; | |
317 | } | ||
318 | ✗ | } | |
319 | |||
320 | 120 | static void dmix_sub_c(int32_t *dst, const int32_t *src, int coeff, ptrdiff_t len) | |
321 | { | ||
322 | int i; | ||
323 | |||
324 |
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77080 | for (i = 0; i < len; i++) |
325 | 76960 | dst[i] -= (unsigned)mul15(src[i], coeff); | |
326 | 120 | } | |
327 | |||
328 | 14 | static void dmix_add_c(int32_t *dst, const int32_t *src, int coeff, ptrdiff_t len) | |
329 | { | ||
330 | int i; | ||
331 | |||
332 |
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7182 | for (i = 0; i < len; i++) |
333 | 7168 | dst[i] += (unsigned)mul15(src[i], coeff); | |
334 | 14 | } | |
335 | |||
336 | 204 | static void dmix_scale_c(int32_t *dst, int scale, ptrdiff_t len) | |
337 | { | ||
338 | int i; | ||
339 | |||
340 |
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140572 | for (i = 0; i < len; i++) |
341 | 140368 | dst[i] = mul15(dst[i], scale); | |
342 | 204 | } | |
343 | |||
344 | ✗ | static void dmix_scale_inv_c(int32_t *dst, int scale_inv, ptrdiff_t len) | |
345 | { | ||
346 | int i; | ||
347 | |||
348 | ✗ | for (i = 0; i < len; i++) | |
349 | ✗ | dst[i] = mul16(dst[i], scale_inv); | |
350 | ✗ | } | |
351 | |||
352 | 896 | static void filter0(SUINT32 *dst, const int32_t *src, int32_t coeff, ptrdiff_t len) | |
353 | { | ||
354 | int i; | ||
355 | |||
356 |
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918400 | for (i = 0; i < len; i++) |
357 | 917504 | dst[i] -= mul22(src[i], coeff); | |
358 | 896 | } | |
359 | |||
360 | 5376 | static void filter1(SUINT32 *dst, const int32_t *src, int32_t coeff, ptrdiff_t len) | |
361 | { | ||
362 | int i; | ||
363 | |||
364 |
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5510400 | for (i = 0; i < len; i++) |
365 | 5505024 | dst[i] -= mul23(src[i], coeff); | |
366 | 5376 | } | |
367 | |||
368 | 224 | static void assemble_freq_bands_c(int32_t *dst, int32_t *src0, int32_t *src1, | |
369 | const int32_t *coeff, ptrdiff_t len) | ||
370 | { | ||
371 | int i; | ||
372 | |||
373 | 224 | filter0(src0, src1, coeff[0], len); | |
374 | 224 | filter0(src1, src0, coeff[1], len); | |
375 | 224 | filter0(src0, src1, coeff[2], len); | |
376 | 224 | filter0(src1, src0, coeff[3], len); | |
377 | |||
378 |
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2016 | for (i = 0; i < 8; i++, src0--) { |
379 | 1792 | filter1(src0, src1, coeff[i + 4], len); | |
380 | 1792 | filter1(src1, src0, coeff[i + 12], len); | |
381 | 1792 | filter1(src0, src1, coeff[i + 4], len); | |
382 | } | ||
383 | |||
384 |
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229600 | for (i = 0; i < len; i++) { |
385 | 229376 | *dst++ = *src1++; | |
386 | 229376 | *dst++ = *++src0; | |
387 | } | ||
388 | 224 | } | |
389 | |||
390 | ✗ | static void lbr_bank_c(float output[32][4], float **input, | |
391 | const float *coeff, ptrdiff_t ofs, ptrdiff_t len) | ||
392 | { | ||
393 | ✗ | float SW0 = coeff[0]; | |
394 | ✗ | float SW1 = coeff[1]; | |
395 | ✗ | float SW2 = coeff[2]; | |
396 | ✗ | float SW3 = coeff[3]; | |
397 | |||
398 | ✗ | float C1 = coeff[4]; | |
399 | ✗ | float C2 = coeff[5]; | |
400 | ✗ | float C3 = coeff[6]; | |
401 | ✗ | float C4 = coeff[7]; | |
402 | |||
403 | ✗ | float AL1 = coeff[8]; | |
404 | ✗ | float AL2 = coeff[9]; | |
405 | |||
406 | int i; | ||
407 | |||
408 | // Short window and 8 point forward MDCT | ||
409 | ✗ | for (i = 0; i < len; i++) { | |
410 | ✗ | float *src = input[i] + ofs; | |
411 | |||
412 | ✗ | float a = src[-4] * SW0 - src[-1] * SW3; | |
413 | ✗ | float b = src[-3] * SW1 - src[-2] * SW2; | |
414 | ✗ | float c = src[ 2] * SW1 + src[ 1] * SW2; | |
415 | ✗ | float d = src[ 3] * SW0 + src[ 0] * SW3; | |
416 | |||
417 | ✗ | output[i][0] = C1 * b - C2 * c + C4 * a - C3 * d; | |
418 | ✗ | output[i][1] = C1 * d - C2 * a - C4 * b - C3 * c; | |
419 | ✗ | output[i][2] = C3 * b + C2 * d - C4 * c + C1 * a; | |
420 | ✗ | output[i][3] = C3 * a - C2 * b + C4 * d - C1 * c; | |
421 | } | ||
422 | |||
423 | // Aliasing cancellation for high frequencies | ||
424 | ✗ | for (i = 12; i < len - 1; i++) { | |
425 | ✗ | float a = output[i ][3] * AL1; | |
426 | ✗ | float b = output[i+1][0] * AL1; | |
427 | ✗ | output[i ][3] += b - a; | |
428 | ✗ | output[i+1][0] -= b + a; | |
429 | ✗ | a = output[i ][2] * AL2; | |
430 | ✗ | b = output[i+1][1] * AL2; | |
431 | ✗ | output[i ][2] += b - a; | |
432 | ✗ | output[i+1][1] -= b + a; | |
433 | } | ||
434 | ✗ | } | |
435 | |||
436 | ✗ | static void lfe_iir_c(float *output, const float *input, | |
437 | const float iir[5][4], float hist[5][2], | ||
438 | ptrdiff_t factor) | ||
439 | { | ||
440 | float res, tmp; | ||
441 | int i, j, k; | ||
442 | |||
443 | ✗ | for (i = 0; i < 64; i++) { | |
444 | ✗ | res = *input++; | |
445 | |||
446 | ✗ | for (j = 0; j < factor; j++) { | |
447 | ✗ | for (k = 0; k < 5; k++) { | |
448 | ✗ | tmp = hist[k][0] * iir[k][0] + hist[k][1] * iir[k][1] + res; | |
449 | ✗ | res = hist[k][0] * iir[k][2] + hist[k][1] * iir[k][3] + tmp; | |
450 | |||
451 | ✗ | hist[k][0] = hist[k][1]; | |
452 | ✗ | hist[k][1] = tmp; | |
453 | } | ||
454 | |||
455 | ✗ | *output++ = res; | |
456 | ✗ | res = 0; | |
457 | } | ||
458 | } | ||
459 | ✗ | } | |
460 | |||
461 | 99 | av_cold void ff_dcadsp_init(DCADSPContext *s) | |
462 | { | ||
463 | 99 | s->decode_hf = decode_hf_c; | |
464 | 99 | s->decode_joint = decode_joint_c; | |
465 | |||
466 | 99 | s->lfe_fir_float[0] = lfe_fir0_float_c; | |
467 | 99 | s->lfe_fir_float[1] = lfe_fir1_float_c; | |
468 | 99 | s->lfe_x96_float = lfe_x96_float_c; | |
469 | 99 | s->sub_qmf_float[0] = sub_qmf32_float_c; | |
470 | 99 | s->sub_qmf_float[1] = sub_qmf64_float_c; | |
471 | |||
472 | 99 | s->lfe_fir_fixed = lfe_fir_fixed_c; | |
473 | 99 | s->lfe_x96_fixed = lfe_x96_fixed_c; | |
474 | 99 | s->sub_qmf_fixed[0] = sub_qmf32_fixed_c; | |
475 | 99 | s->sub_qmf_fixed[1] = sub_qmf64_fixed_c; | |
476 | |||
477 | 99 | s->decor = decor_c; | |
478 | |||
479 | 99 | s->dmix_sub_xch = dmix_sub_xch_c; | |
480 | 99 | s->dmix_sub = dmix_sub_c; | |
481 | 99 | s->dmix_add = dmix_add_c; | |
482 | 99 | s->dmix_scale = dmix_scale_c; | |
483 | 99 | s->dmix_scale_inv = dmix_scale_inv_c; | |
484 | |||
485 | 99 | s->assemble_freq_bands = assemble_freq_bands_c; | |
486 | |||
487 | 99 | s->lbr_bank = lbr_bank_c; | |
488 | 99 | s->lfe_iir = lfe_iir_c; | |
489 | |||
490 | #if ARCH_X86 | ||
491 | 99 | ff_dcadsp_init_x86(s); | |
492 | #endif | ||
493 | 99 | } | |
494 |