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dcadsp.c
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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.h"
22 
23 #include "dcadsp.h"
24 #include "dcamath.h"
25 
26 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  for (i = sb_start; i < sb_end; i++) {
36  const int8_t *coeff = hf_vq[vq_index[i]];
37  int32_t scale = scale_factors[i][0];
38  for (j = 0; j < len; j++)
39  dst[i][j + ofs] = clip23(coeff[j] * scale + (1 << 3) >> 4);
40  }
41 }
42 
43 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  for (i = sb_start; i < sb_end; i++) {
51  int32_t scale = scale_factors[i];
52  for (j = 0; j < len; j++)
53  dst[i][j + ofs] = clip23(mul17(src[i][j + ofs], scale));
54  }
55 }
56 
57 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  int factor = 64 << dec_select;
63  int ncoeffs = 8 >> dec_select;
64  int nlfesamples = npcmblocks >> (dec_select + 1);
65  int i, j, k;
66 
67  for (i = 0; i < nlfesamples; i++) {
68  // One decimated sample generates 64 or 128 interpolated ones
69  for (j = 0; j < factor / 2; j++) {
70  float a = 0;
71  float b = 0;
72 
73  for (k = 0; k < ncoeffs; k++) {
74  a += filter_coeff[ j * ncoeffs + k] * lfe_samples[-k];
75  b += filter_coeff[255 - j * ncoeffs - k] * lfe_samples[-k];
76  }
77 
78  pcm_samples[ j] = a;
79  pcm_samples[factor / 2 + j] = b;
80  }
81 
82  lfe_samples++;
83  pcm_samples += factor;
84  }
85 }
86 
87 static void lfe_fir0_float_c(float *pcm_samples, int32_t *lfe_samples,
88  const float *filter_coeff, ptrdiff_t npcmblocks)
89 {
90  lfe_fir_float_c(pcm_samples, lfe_samples, filter_coeff, npcmblocks, 0);
91 }
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 static void lfe_x96_float_c(float *dst, const float *src,
100  float *hist, ptrdiff_t len)
101 {
102  float prev = *hist;
103  int i;
104 
105  for (i = 0; i < len; i++) {
106  float a = 0.25f * src[i] + 0.75f * prev;
107  float b = 0.75f * src[i] + 0.25f * prev;
108  prev = src[i];
109  *dst++ = a;
110  *dst++ = b;
111  }
112 
113  *hist = prev;
114 }
115 
117  FFTContext *imdct,
118  float *pcm_samples,
119  int32_t **subband_samples_lo,
120  int32_t **subband_samples_hi,
121  float *hist1, int *offset, float *hist2,
122  const float *filter_coeff, ptrdiff_t npcmblocks,
123  float scale)
124 {
125  LOCAL_ALIGNED_32(float, input, [32]);
126  int i, j;
127 
128  for (j = 0; j < npcmblocks; j++) {
129  // Load in one sample from each subband
130  for (i = 0; i < 32; i++) {
131  if ((i - 1) & 2)
132  input[i] = -subband_samples_lo[i][j];
133  else
134  input[i] = subband_samples_lo[i][j];
135  }
136 
137  // One subband sample generates 32 interpolated ones
138  synth->synth_filter_float(imdct, hist1, offset,
139  hist2, filter_coeff,
140  pcm_samples, input, scale);
141  pcm_samples += 32;
142  }
143 }
144 
146  FFTContext *imdct,
147  float *pcm_samples,
148  int32_t **subband_samples_lo,
149  int32_t **subband_samples_hi,
150  float *hist1, int *offset, float *hist2,
151  const float *filter_coeff, ptrdiff_t npcmblocks,
152  float scale)
153 {
154  LOCAL_ALIGNED_32(float, input, [64]);
155  int i, j;
156 
157  if (!subband_samples_hi)
158  memset(&input[32], 0, sizeof(input[0]) * 32);
159 
160  for (j = 0; j < npcmblocks; j++) {
161  // Load in one sample from each subband
162  if (subband_samples_hi) {
163  // Full 64 subbands, first 32 are residual coded
164  for (i = 0; i < 32; i++) {
165  if ((i - 1) & 2)
166  input[i] = -subband_samples_lo[i][j] - subband_samples_hi[i][j];
167  else
168  input[i] = subband_samples_lo[i][j] + subband_samples_hi[i][j];
169  }
170  for (i = 32; i < 64; i++) {
171  if ((i - 1) & 2)
172  input[i] = -subband_samples_hi[i][j];
173  else
174  input[i] = subband_samples_hi[i][j];
175  }
176  } else {
177  // Only first 32 subbands
178  for (i = 0; i < 32; i++) {
179  if ((i - 1) & 2)
180  input[i] = -subband_samples_lo[i][j];
181  else
182  input[i] = subband_samples_lo[i][j];
183  }
184  }
185 
186  // One subband sample generates 64 interpolated ones
187  synth->synth_filter_float_64(imdct, hist1, offset,
188  hist2, filter_coeff,
189  pcm_samples, input, scale);
190  pcm_samples += 64;
191  }
192 }
193 
194 static void lfe_fir_fixed_c(int32_t *pcm_samples, int32_t *lfe_samples,
195  const int32_t *filter_coeff, ptrdiff_t npcmblocks)
196 {
197  // Select decimation factor
198  int nlfesamples = npcmblocks >> 1;
199  int i, j, k;
200 
201  for (i = 0; i < nlfesamples; i++) {
202  // One decimated sample generates 64 interpolated ones
203  for (j = 0; j < 32; j++) {
204  int64_t a = 0;
205  int64_t b = 0;
206 
207  for (k = 0; k < 8; k++) {
208  a += (int64_t)filter_coeff[ j * 8 + k] * lfe_samples[-k];
209  b += (int64_t)filter_coeff[255 - j * 8 - k] * lfe_samples[-k];
210  }
211 
212  pcm_samples[ j] = clip23(norm23(a));
213  pcm_samples[32 + j] = clip23(norm23(b));
214  }
215 
216  lfe_samples++;
217  pcm_samples += 64;
218  }
219 }
220 
221 static void lfe_x96_fixed_c(int32_t *dst, const int32_t *src,
222  int32_t *hist, ptrdiff_t len)
223 {
224  int32_t prev = *hist;
225  int i;
226 
227  for (i = 0; i < len; i++) {
228  int64_t a = INT64_C(2097471) * src[i] + INT64_C(6291137) * prev;
229  int64_t b = INT64_C(6291137) * src[i] + INT64_C(2097471) * prev;
230  prev = src[i];
231  *dst++ = clip23(norm23(a));
232  *dst++ = clip23(norm23(b));
233  }
234 
235  *hist = prev;
236 }
237 
239  DCADCTContext *imdct,
240  int32_t *pcm_samples,
241  int32_t **subband_samples_lo,
242  int32_t **subband_samples_hi,
243  int32_t *hist1, int *offset, int32_t *hist2,
244  const int32_t *filter_coeff, ptrdiff_t npcmblocks)
245 {
246  LOCAL_ALIGNED_32(int32_t, input, [32]);
247  int i, j;
248 
249  for (j = 0; j < npcmblocks; j++) {
250  // Load in one sample from each subband
251  for (i = 0; i < 32; i++)
252  input[i] = subband_samples_lo[i][j];
253 
254  // One subband sample generates 32 interpolated ones
255  synth->synth_filter_fixed(imdct, hist1, offset,
256  hist2, filter_coeff,
257  pcm_samples, input);
258  pcm_samples += 32;
259  }
260 }
261 
263  DCADCTContext *imdct,
264  int32_t *pcm_samples,
265  int32_t **subband_samples_lo,
266  int32_t **subband_samples_hi,
267  int32_t *hist1, int *offset, int32_t *hist2,
268  const int32_t *filter_coeff, ptrdiff_t npcmblocks)
269 {
270  LOCAL_ALIGNED_32(int32_t, input, [64]);
271  int i, j;
272 
273  if (!subband_samples_hi)
274  memset(&input[32], 0, sizeof(input[0]) * 32);
275 
276  for (j = 0; j < npcmblocks; j++) {
277  // Load in one sample from each subband
278  if (subband_samples_hi) {
279  // Full 64 subbands, first 32 are residual coded
280  for (i = 0; i < 32; i++)
281  input[i] = subband_samples_lo[i][j] + subband_samples_hi[i][j];
282  for (i = 32; i < 64; i++)
283  input[i] = subband_samples_hi[i][j];
284  } else {
285  // Only first 32 subbands
286  for (i = 0; i < 32; i++)
287  input[i] = subband_samples_lo[i][j];
288  }
289 
290  // One subband sample generates 64 interpolated ones
291  synth->synth_filter_fixed_64(imdct, hist1, offset,
292  hist2, filter_coeff,
293  pcm_samples, input);
294  pcm_samples += 64;
295  }
296 }
297 
298 static void decor_c(int32_t *dst, const int32_t *src, int coeff, ptrdiff_t len)
299 {
300  int i;
301 
302  for (i = 0; i < len; i++)
303  dst[i] += src[i] * coeff + (1 << 2) >> 3;
304 }
305 
306 static void dmix_sub_xch_c(int32_t *dst1, int32_t *dst2,
307  const int32_t *src, ptrdiff_t len)
308 {
309  int i;
310 
311  for (i = 0; i < len; i++) {
312  int32_t cs = mul23(src[i], 5931520 /* M_SQRT1_2 * (1 << 23) */);
313  dst1[i] -= cs;
314  dst2[i] -= cs;
315  }
316 }
317 
318 static void dmix_sub_c(int32_t *dst, const int32_t *src, int coeff, ptrdiff_t len)
319 {
320  int i;
321 
322  for (i = 0; i < len; i++)
323  dst[i] -= mul15(src[i], coeff);
324 }
325 
326 static void dmix_add_c(int32_t *dst, const int32_t *src, int coeff, ptrdiff_t len)
327 {
328  int i;
329 
330  for (i = 0; i < len; i++)
331  dst[i] += mul15(src[i], coeff);
332 }
333 
334 static void dmix_scale_c(int32_t *dst, int scale, ptrdiff_t len)
335 {
336  int i;
337 
338  for (i = 0; i < len; i++)
339  dst[i] = mul15(dst[i], scale);
340 }
341 
342 static void dmix_scale_inv_c(int32_t *dst, int scale_inv, ptrdiff_t len)
343 {
344  int i;
345 
346  for (i = 0; i < len; i++)
347  dst[i] = mul16(dst[i], scale_inv);
348 }
349 
350 static void filter0(int32_t *dst, const int32_t *src, int32_t coeff, ptrdiff_t len)
351 {
352  int i;
353 
354  for (i = 0; i < len; i++)
355  dst[i] -= mul22(src[i], coeff);
356 }
357 
358 static void filter1(int32_t *dst, const int32_t *src, int32_t coeff, ptrdiff_t len)
359 {
360  int i;
361 
362  for (i = 0; i < len; i++)
363  dst[i] -= mul23(src[i], coeff);
364 }
365 
367  const int32_t *coeff, ptrdiff_t len)
368 {
369  int i;
370 
371  filter0(src0, src1, coeff[0], len);
372  filter0(src1, src0, coeff[1], len);
373  filter0(src0, src1, coeff[2], len);
374  filter0(src1, src0, coeff[3], len);
375 
376  for (i = 0; i < 8; i++, src0--) {
377  filter1(src0, src1, coeff[i + 4], len);
378  filter1(src1, src0, coeff[i + 12], len);
379  filter1(src0, src1, coeff[i + 4], len);
380  }
381 
382  for (i = 0; i < len; i++) {
383  *dst++ = *src1++;
384  *dst++ = *++src0;
385  }
386 }
387 
388 static void lbr_bank_c(float output[32][4], float **input,
389  const float *coeff, ptrdiff_t ofs, ptrdiff_t len)
390 {
391  float SW0 = coeff[0];
392  float SW1 = coeff[1];
393  float SW2 = coeff[2];
394  float SW3 = coeff[3];
395 
396  float C1 = coeff[4];
397  float C2 = coeff[5];
398  float C3 = coeff[6];
399  float C4 = coeff[7];
400 
401  float AL1 = coeff[8];
402  float AL2 = coeff[9];
403 
404  int i;
405 
406  // Short window and 8 point forward MDCT
407  for (i = 0; i < len; i++) {
408  float *src = input[i] + ofs;
409 
410  float a = src[-4] * SW0 - src[-1] * SW3;
411  float b = src[-3] * SW1 - src[-2] * SW2;
412  float c = src[ 2] * SW1 + src[ 1] * SW2;
413  float d = src[ 3] * SW0 + src[ 0] * SW3;
414 
415  output[i][0] = C1 * b - C2 * c + C4 * a - C3 * d;
416  output[i][1] = C1 * d - C2 * a - C4 * b - C3 * c;
417  output[i][2] = C3 * b + C2 * d - C4 * c + C1 * a;
418  output[i][3] = C3 * a - C2 * b + C4 * d - C1 * c;
419  }
420 
421  // Aliasing cancellation for high frequencies
422  for (i = 12; i < len - 1; i++) {
423  float a = output[i ][3] * AL1;
424  float b = output[i+1][0] * AL1;
425  output[i ][3] += b - a;
426  output[i+1][0] -= b + a;
427  a = output[i ][2] * AL2;
428  b = output[i+1][1] * AL2;
429  output[i ][2] += b - a;
430  output[i+1][1] -= b + a;
431  }
432 }
433 
434 static void lfe_iir_c(float *output, const float *input,
435  const float iir[5][4], float hist[5][2],
436  ptrdiff_t factor)
437 {
438  float res, tmp;
439  int i, j, k;
440 
441  for (i = 0; i < 64; i++) {
442  res = *input++;
443 
444  for (j = 0; j < factor; j++) {
445  for (k = 0; k < 5; k++) {
446  tmp = hist[k][0] * iir[k][0] + hist[k][1] * iir[k][1] + res;
447  res = hist[k][0] * iir[k][2] + hist[k][1] * iir[k][3] + tmp;
448 
449  hist[k][0] = hist[k][1];
450  hist[k][1] = tmp;
451  }
452 
453  *output++ = res;
454  res = 0;
455  }
456  }
457 }
458 
460 {
461  s->decode_hf = decode_hf_c;
463 
469 
474 
475  s->decor = decor_c;
476 
478  s->dmix_sub = dmix_sub_c;
479  s->dmix_add = dmix_add_c;
482 
484 
485  s->lbr_bank = lbr_bank_c;
486  s->lfe_iir = lfe_iir_c;
487 
488  if (ARCH_X86)
490 }
void(* lfe_fir_fixed)(int32_t *pcm_samples, int32_t *lfe_samples, const int32_t *filter_coeff, ptrdiff_t npcmblocks)
Definition: dcadsp.h:58
const char * s
Definition: avisynth_c.h:631
static void lfe_fir_float_c(float *pcm_samples, int32_t *lfe_samples, const float *filter_coeff, ptrdiff_t npcmblocks, int dec_select)
Definition: dcadsp.c:57
static int32_t mul22(int32_t a, int32_t b)
Definition: dcamath.h:49
static void sub_qmf32_fixed_c(SynthFilterContext *synth, DCADCTContext *imdct, int32_t *pcm_samples, int32_t **subband_samples_lo, int32_t **subband_samples_hi, int32_t *hist1, int *offset, int32_t *hist2, const int32_t *filter_coeff, ptrdiff_t npcmblocks)
Definition: dcadsp.c:238
static void assemble_freq_bands_c(int32_t *dst, int32_t *src0, int32_t *src1, const int32_t *coeff, ptrdiff_t len)
Definition: dcadsp.c:366
void(* sub_qmf_float[2])(SynthFilterContext *synth, FFTContext *imdct, float *pcm_samples, int32_t **subband_samples_lo, int32_t **subband_samples_hi, float *hist1, int *offset, float *hist2, const float *filter_coeff, ptrdiff_t npcmblocks, float scale)
Definition: dcadsp.h:49
static void dmix_scale_c(int32_t *dst, int scale, ptrdiff_t len)
Definition: dcadsp.c:334
memory handling functions
static void sub_qmf64_fixed_c(SynthFilterContext *synth, DCADCTContext *imdct, int32_t *pcm_samples, int32_t **subband_samples_lo, int32_t **subband_samples_hi, int32_t *hist1, int *offset, int32_t *hist2, const int32_t *filter_coeff, ptrdiff_t npcmblocks)
Definition: dcadsp.c:262
const char * b
Definition: vf_curves.c:109
static void lfe_fir0_float_c(float *pcm_samples, int32_t *lfe_samples, const float *filter_coeff, ptrdiff_t npcmblocks)
Definition: dcadsp.c:87
static int32_t mul15(int32_t a, int32_t b)
Definition: dcamath.h:46
static void filter1(int32_t *dst, const int32_t *src, int32_t coeff, ptrdiff_t len)
Definition: dcadsp.c:358
void(* dmix_scale_inv)(int32_t *dst, int scale_inv, ptrdiff_t len)
Definition: dcadsp.h:83
void(* synth_filter_float_64)(FFTContext *imdct, float *synth_buf_ptr, int *synth_buf_offset, float synth_buf2[64], const float window[1024], float out[64], const float in[64], float scale)
Definition: synth_filter.h:33
static void lfe_fir_fixed_c(int32_t *pcm_samples, int32_t *lfe_samples, const int32_t *filter_coeff, ptrdiff_t npcmblocks)
Definition: dcadsp.c:194
#define C3
void(* synth_filter_fixed_64)(DCADCTContext *imdct, int32_t *synth_buf_ptr, int *synth_buf_offset, int32_t synth_buf2[64], const int32_t window[1024], int32_t out[64], const int32_t in[64])
Definition: synth_filter.h:41
static void filter0(int32_t *dst, const int32_t *src, int32_t coeff, ptrdiff_t len)
Definition: dcadsp.c:350
static int32_t clip23(int32_t a)
Definition: dcamath.h:53
static int32_t mul23(int32_t a, int32_t b)
Definition: dcamath.h:50
static int32_t mul16(int32_t a, int32_t b)
Definition: dcamath.h:47
#define av_cold
Definition: attributes.h:82
static void lfe_iir_c(float *output, const float *input, const float iir[5][4], float hist[5][2], ptrdiff_t factor)
Definition: dcadsp.c:434
av_cold void ff_dcadsp_init_x86(DCADSPContext *s)
Definition: dcadsp_init.c:36
void(* dmix_add)(int32_t *dst, const int32_t *src, int coeff, ptrdiff_t len)
Definition: dcadsp.h:79
av_cold void ff_dcadsp_init(DCADSPContext *s)
Definition: dcadsp.c:459
static void lfe_x96_fixed_c(int32_t *dst, const int32_t *src, int32_t *hist, ptrdiff_t len)
Definition: dcadsp.c:221
static void decor_c(int32_t *dst, const int32_t *src, int coeff, ptrdiff_t len)
Definition: dcadsp.c:298
#define C1
void(* lfe_fir_float[2])(float *pcm_samples, int32_t *lfe_samples, const float *filter_coeff, ptrdiff_t npcmblocks)
Definition: dcadsp.h:43
void(* lfe_iir)(float *output, const float *input, const float iir[5][4], float hist[5][2], ptrdiff_t factor)
Definition: dcadsp.h:91
static void lfe_fir1_float_c(float *pcm_samples, int32_t *lfe_samples, const float *filter_coeff, ptrdiff_t npcmblocks)
Definition: dcadsp.c:93
static void decode_hf_c(int32_t **dst, const int32_t *vq_index, const int8_t hf_vq[1024][32], int32_t scale_factors[32][2], ptrdiff_t sb_start, ptrdiff_t sb_end, ptrdiff_t ofs, ptrdiff_t len)
Definition: dcadsp.c:26
void(* assemble_freq_bands)(int32_t *dst, int32_t *src0, int32_t *src1, const int32_t *coeff, ptrdiff_t len)
Definition: dcadsp.h:85
#define C2
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
Definition: fft.h:88
static void dmix_sub_xch_c(int32_t *dst1, int32_t *dst2, const int32_t *src, ptrdiff_t len)
Definition: dcadsp.c:306
static void lbr_bank_c(float output[32][4], float **input, const float *coeff, ptrdiff_t ofs, ptrdiff_t len)
Definition: dcadsp.c:388
void(* dmix_scale)(int32_t *dst, int scale, ptrdiff_t len)
Definition: dcadsp.h:81
static uint8_t tmp[8]
Definition: des-test.c:38
int32_t
void(* lfe_x96_float)(float *dst, const float *src, float *hist, ptrdiff_t len)
Definition: dcadsp.h:46
#define src
Definition: vp9dsp.c:530
void(* lbr_bank)(float output[32][4], float **input, const float *coeff, ptrdiff_t ofs, ptrdiff_t len)
Definition: dcadsp.h:88
#define C4
static void dmix_add_c(int32_t *dst, const int32_t *src, int coeff, ptrdiff_t len)
Definition: dcadsp.c:326
void(* decode_hf)(int32_t **dst, const int32_t *vq_index, const int8_t hf_vq[1024][32], int32_t scale_factors[32][2], ptrdiff_t sb_start, ptrdiff_t sb_end, ptrdiff_t ofs, ptrdiff_t len)
Definition: dcadsp.h:31
#define src1
Definition: h264pred.c:139
void(* decode_joint)(int32_t **dst, int32_t **src, const int32_t *scale_factors, ptrdiff_t sb_start, ptrdiff_t sb_end, ptrdiff_t ofs, ptrdiff_t len)
Definition: dcadsp.h:38
static void decode_joint_c(int32_t **dst, int32_t **src, const int32_t *scale_factors, ptrdiff_t sb_start, ptrdiff_t sb_end, ptrdiff_t ofs, ptrdiff_t len)
Definition: dcadsp.c:43
static void sub_qmf64_float_c(SynthFilterContext *synth, FFTContext *imdct, float *pcm_samples, int32_t **subband_samples_lo, int32_t **subband_samples_hi, float *hist1, int *offset, float *hist2, const float *filter_coeff, ptrdiff_t npcmblocks, float scale)
Definition: dcadsp.c:145
#define src0
Definition: h264pred.c:138
static const int factor[16]
Definition: vf_pp7.c:75
static void dmix_scale_inv_c(int32_t *dst, int scale_inv, ptrdiff_t len)
Definition: dcadsp.c:342
#define LOCAL_ALIGNED_32(t, v,...)
Definition: internal.h:127
void(* sub_qmf_fixed[2])(SynthFilterContext *synth, DCADCTContext *imdct, int32_t *pcm_samples, int32_t **subband_samples_lo, int32_t **subband_samples_hi, int32_t *hist1, int *offset, int32_t *hist2, const int32_t *filter_coeff, ptrdiff_t npcmblocks)
Definition: dcadsp.h:64
void(* synth_filter_float)(FFTContext *imdct, float *synth_buf_ptr, int *synth_buf_offset, float synth_buf2[32], const float window[512], float out[32], const float in[32], float scale)
Definition: synth_filter.h:28
static double c[64]
void(* dmix_sub_xch)(int32_t *dst1, int32_t *dst2, const int32_t *src, ptrdiff_t len)
Definition: dcadsp.h:74
int len
static int32_t mul17(int32_t a, int32_t b)
Definition: dcamath.h:48
void(* dmix_sub)(int32_t *dst, const int32_t *src, int coeff, ptrdiff_t len)
Definition: dcadsp.h:77
void(* synth_filter_fixed)(DCADCTContext *imdct, int32_t *synth_buf_ptr, int *synth_buf_offset, int32_t synth_buf2[32], const int32_t window[512], int32_t out[32], const int32_t in[32])
Definition: synth_filter.h:37
static const double coeff[2][5]
Definition: vf_owdenoise.c:71
static int32_t norm23(int64_t a)
Definition: dcamath.h:44
void(* lfe_x96_fixed)(int32_t *dst, const int32_t *src, int32_t *hist, ptrdiff_t len)
Definition: dcadsp.h:61
static void dmix_sub_c(int32_t *dst, const int32_t *src, int coeff, ptrdiff_t len)
Definition: dcadsp.c:318
void(* decor)(int32_t *dst, const int32_t *src, int coeff, ptrdiff_t len)
Definition: dcadsp.h:72
static void sub_qmf32_float_c(SynthFilterContext *synth, FFTContext *imdct, float *pcm_samples, int32_t **subband_samples_lo, int32_t **subband_samples_hi, float *hist1, int *offset, float *hist2, const float *filter_coeff, ptrdiff_t npcmblocks, float scale)
Definition: dcadsp.c:116
static void lfe_x96_float_c(float *dst, const float *src, float *hist, ptrdiff_t len)
Definition: dcadsp.c:99