FFmpeg
twinvqdec.c
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1 /*
2  * TwinVQ decoder
3  * Copyright (c) 2009 Vitor Sessak
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include <math.h>
23 #include <stdint.h>
24 
26 #include "avcodec.h"
27 #include "get_bits.h"
28 #include "internal.h"
29 #include "twinvq.h"
30 #include "metasound_data.h"
31 #include "twinvq_data.h"
32 
33 static const TwinVQModeTab mode_08_08 = {
34  {
35  { 8, bark_tab_s08_64, 10, tab.fcb08s, 1, 5, tab.cb0808s0, tab.cb0808s1, 18 },
36  { 2, bark_tab_m08_256, 20, tab.fcb08m, 2, 5, tab.cb0808m0, tab.cb0808m1, 16 },
37  { 1, bark_tab_l08_512, 30, tab.fcb08l, 3, 6, tab.cb0808l0, tab.cb0808l1, 17 }
38  },
39  512, 12, ff_metasound_lsp8, 1, 5, 3, 3, tab.shape08, 8, 28, 20, 6, 40
40 };
41 
42 static const TwinVQModeTab mode_11_08 = {
43  {
44  { 8, bark_tab_s11_64, 10, tab.fcb11s, 1, 5, tab.cb1108s0, tab.cb1108s1, 29 },
45  { 2, bark_tab_m11_256, 20, tab.fcb11m, 2, 5, tab.cb1108m0, tab.cb1108m1, 24 },
46  { 1, bark_tab_l11_512, 30, tab.fcb11l, 3, 6, tab.cb1108l0, tab.cb1108l1, 27 }
47  },
48  512, 16, ff_metasound_lsp11, 1, 6, 4, 3, tab.shape11, 9, 36, 30, 7, 90
49 };
50 
51 static const TwinVQModeTab mode_11_10 = {
52  {
53  { 8, bark_tab_s11_64, 10, tab.fcb11s, 1, 5, tab.cb1110s0, tab.cb1110s1, 21 },
54  { 2, bark_tab_m11_256, 20, tab.fcb11m, 2, 5, tab.cb1110m0, tab.cb1110m1, 18 },
55  { 1, bark_tab_l11_512, 30, tab.fcb11l, 3, 6, tab.cb1110l0, tab.cb1110l1, 20 }
56  },
57  512, 16, ff_metasound_lsp11, 1, 6, 4, 3, tab.shape11, 9, 36, 30, 7, 90
58 };
59 
60 static const TwinVQModeTab mode_16_16 = {
61  {
62  { 8, bark_tab_s16_128, 10, tab.fcb16s, 1, 5, tab.cb1616s0, tab.cb1616s1, 16 },
63  { 2, bark_tab_m16_512, 20, tab.fcb16m, 2, 5, tab.cb1616m0, tab.cb1616m1, 15 },
64  { 1, bark_tab_l16_1024, 30, tab.fcb16l, 3, 6, tab.cb1616l0, tab.cb1616l1, 16 }
65  },
66  1024, 16, ff_metasound_lsp16, 1, 6, 4, 3, tab.shape16, 9, 56, 60, 7, 180
67 };
68 
69 static const TwinVQModeTab mode_22_20 = {
70  {
71  { 8, bark_tab_s22_128, 10, tab.fcb22s_1, 1, 6, tab.cb2220s0, tab.cb2220s1, 18 },
72  { 2, bark_tab_m22_512, 20, tab.fcb22m_1, 2, 6, tab.cb2220m0, tab.cb2220m1, 17 },
73  { 1, bark_tab_l22_1024, 32, tab.fcb22l_1, 4, 6, tab.cb2220l0, tab.cb2220l1, 18 }
74  },
75  1024, 16, ff_metasound_lsp22, 1, 6, 4, 3, tab.shape22_1, 9, 56, 36, 7, 144
76 };
77 
78 static const TwinVQModeTab mode_22_24 = {
79  {
80  { 8, bark_tab_s22_128, 10, tab.fcb22s_1, 1, 6, tab.cb2224s0, tab.cb2224s1, 15 },
81  { 2, bark_tab_m22_512, 20, tab.fcb22m_1, 2, 6, tab.cb2224m0, tab.cb2224m1, 14 },
82  { 1, bark_tab_l22_1024, 32, tab.fcb22l_1, 4, 6, tab.cb2224l0, tab.cb2224l1, 15 }
83  },
84  1024, 16, ff_metasound_lsp22, 1, 6, 4, 3, tab.shape22_1, 9, 56, 36, 7, 144
85 };
86 
87 static const TwinVQModeTab mode_22_32 = {
88  {
89  { 4, bark_tab_s22_128, 10, tab.fcb22s_2, 1, 6, tab.cb2232s0, tab.cb2232s1, 11 },
90  { 2, bark_tab_m22_256, 20, tab.fcb22m_2, 2, 6, tab.cb2232m0, tab.cb2232m1, 11 },
91  { 1, bark_tab_l22_512, 32, tab.fcb22l_2, 4, 6, tab.cb2232l0, tab.cb2232l1, 12 }
92  },
93  512, 16, tab.lsp22_2, 1, 6, 4, 4, tab.shape22_2, 9, 56, 36, 7, 72
94 };
95 
96 static const TwinVQModeTab mode_44_40 = {
97  {
98  { 16, bark_tab_s44_128, 10, tab.fcb44s, 1, 6, tab.cb4440s0, tab.cb4440s1, 18 },
99  { 4, bark_tab_m44_512, 20, tab.fcb44m, 2, 6, tab.cb4440m0, tab.cb4440m1, 17 },
100  { 1, bark_tab_l44_2048, 40, tab.fcb44l, 4, 6, tab.cb4440l0, tab.cb4440l1, 17 }
101  },
102  2048, 20, ff_metasound_lsp44, 1, 6, 4, 4, tab.shape44, 9, 84, 54, 7, 432
103 };
104 
105 static const TwinVQModeTab mode_44_48 = {
106  {
107  { 16, bark_tab_s44_128, 10, tab.fcb44s, 1, 6, tab.cb4448s0, tab.cb4448s1, 15 },
108  { 4, bark_tab_m44_512, 20, tab.fcb44m, 2, 6, tab.cb4448m0, tab.cb4448m1, 14 },
109  { 1, bark_tab_l44_2048, 40, tab.fcb44l, 4, 6, tab.cb4448l0, tab.cb4448l1, 14 }
110  },
111  2048, 20, ff_metasound_lsp44, 1, 6, 4, 4, tab.shape44, 9, 84, 54, 7, 432
112 };
113 
114 /**
115  * Evaluate a * b / 400 rounded to the nearest integer. When, for example,
116  * a * b == 200 and the nearest integer is ill-defined, use a table to emulate
117  * the following broken float-based implementation used by the binary decoder:
118  *
119  * @code
120  * static int very_broken_op(int a, int b)
121  * {
122  * static float test; // Ugh, force gcc to do the division first...
123  *
124  * test = a / 400.0;
125  * return b * test + 0.5;
126  * }
127  * @endcode
128  *
129  * @note if this function is replaced by just ROUNDED_DIV(a * b, 400.0), the
130  * stddev between the original file (before encoding with Yamaha encoder) and
131  * the decoded output increases, which leads one to believe that the encoder
132  * expects exactly this broken calculation.
133  */
134 static int very_broken_op(int a, int b)
135 {
136  int x = a * b + 200;
137  int size;
138  const uint8_t *rtab;
139 
140  if (x % 400 || b % 5)
141  return x / 400;
142 
143  x /= 400;
144 
145  size = tabs[b / 5].size;
146  rtab = tabs[b / 5].tab;
147  return x - rtab[size * av_log2(2 * (x - 1) / size) + (x - 1) % size];
148 }
149 
150 /**
151  * Sum to data a periodic peak of a given period, width and shape.
152  *
153  * @param period the period of the peak divided by 400.0
154  */
155 static void add_peak(int period, int width, const float *shape,
156  float ppc_gain, float *speech, int len)
157 {
158  int i, j;
159 
160  const float *shape_end = shape + len;
161  int center;
162 
163  // First peak centered around zero
164  for (i = 0; i < width / 2; i++)
165  speech[i] += ppc_gain * *shape++;
166 
167  for (i = 1; i < ROUNDED_DIV(len, width); i++) {
168  center = very_broken_op(period, i);
169  for (j = -width / 2; j < (width + 1) / 2; j++)
170  speech[j + center] += ppc_gain * *shape++;
171  }
172 
173  // For the last block, be careful not to go beyond the end of the buffer
174  center = very_broken_op(period, i);
175  for (j = -width / 2; j < (width + 1) / 2 && shape < shape_end; j++)
176  speech[j + center] += ppc_gain * *shape++;
177 }
178 
179 static void decode_ppc(TwinVQContext *tctx, int period_coef, int g_coef,
180  const float *shape, float *speech)
181 {
182  const TwinVQModeTab *mtab = tctx->mtab;
183  int isampf = tctx->avctx->sample_rate / 1000;
184  int ibps = tctx->avctx->bit_rate / (1000 * tctx->avctx->channels);
185  int min_period = ROUNDED_DIV(40 * 2 * mtab->size, isampf);
186  int max_period = ROUNDED_DIV(40 * 2 * mtab->size * 6, isampf);
187  int period_range = max_period - min_period;
188  float pgain_step = 25000.0 / ((1 << mtab->pgain_bit) - 1);
189  float ppc_gain = 1.0 / 8192 *
190  twinvq_mulawinv(pgain_step * g_coef +
191  pgain_step / 2,
192  25000.0, TWINVQ_PGAIN_MU);
193 
194  // This is actually the period multiplied by 400. It is just linearly coded
195  // between its maximum and minimum value.
196  int period = min_period +
197  ROUNDED_DIV(period_coef * period_range,
198  (1 << mtab->ppc_period_bit) - 1);
199  int width;
200 
201  if (isampf == 22 && ibps == 32) {
202  // For some unknown reason, NTT decided to code this case differently...
203  width = ROUNDED_DIV((period + 800) * mtab->peak_per2wid,
204  400 * mtab->size);
205  } else
206  width = period * mtab->peak_per2wid / (400 * mtab->size);
207 
208  add_peak(period, width, shape, ppc_gain, speech, mtab->ppc_shape_len);
209 }
210 
211 static void dec_bark_env(TwinVQContext *tctx, const uint8_t *in, int use_hist,
212  int ch, float *out, float gain,
213  enum TwinVQFrameType ftype)
214 {
215  const TwinVQModeTab *mtab = tctx->mtab;
216  int i, j;
217  float *hist = tctx->bark_hist[ftype][ch];
218  float val = ((const float []) { 0.4, 0.35, 0.28 })[ftype];
219  int bark_n_coef = mtab->fmode[ftype].bark_n_coef;
220  int fw_cb_len = mtab->fmode[ftype].bark_env_size / bark_n_coef;
221  int idx = 0;
222 
223  for (i = 0; i < fw_cb_len; i++)
224  for (j = 0; j < bark_n_coef; j++, idx++) {
225  float tmp2 = mtab->fmode[ftype].bark_cb[fw_cb_len * in[j] + i] *
226  (1.0 / 4096);
227  float st = use_hist ? (1.0 - val) * tmp2 + val * hist[idx] + 1.0
228  : tmp2 + 1.0;
229 
230  hist[idx] = tmp2;
231  if (st < -1.0)
232  st = 1.0;
233 
234  twinvq_memset_float(out, st * gain, mtab->fmode[ftype].bark_tab[idx]);
235  out += mtab->fmode[ftype].bark_tab[idx];
236  }
237 }
238 
239 static void read_cb_data(TwinVQContext *tctx, GetBitContext *gb,
240  uint8_t *dst, enum TwinVQFrameType ftype)
241 {
242  int i;
243 
244  for (i = 0; i < tctx->n_div[ftype]; i++) {
245  int bs_second_part = (i >= tctx->bits_main_spec_change[ftype]);
246 
247  *dst++ = get_bits(gb, tctx->bits_main_spec[0][ftype][bs_second_part]);
248  *dst++ = get_bits(gb, tctx->bits_main_spec[1][ftype][bs_second_part]);
249  }
250 }
251 
253  const uint8_t *buf, int buf_size)
254 {
255  TwinVQFrameData *bits = &tctx->bits[0];
256  const TwinVQModeTab *mtab = tctx->mtab;
257  int channels = tctx->avctx->channels;
258  int sub;
259  GetBitContext gb;
260  int i, j, k, ret;
261 
262  if ((ret = init_get_bits8(&gb, buf, buf_size)) < 0)
263  return ret;
264  skip_bits(&gb, get_bits(&gb, 8));
265 
266  bits->window_type = get_bits(&gb, TWINVQ_WINDOW_TYPE_BITS);
267 
268  if (bits->window_type > 8) {
269  av_log(avctx, AV_LOG_ERROR, "Invalid window type, broken sample?\n");
270  return AVERROR_INVALIDDATA;
271  }
272 
274 
275  sub = mtab->fmode[bits->ftype].sub;
276 
277  read_cb_data(tctx, &gb, bits->main_coeffs, bits->ftype);
278 
279  for (i = 0; i < channels; i++)
280  for (j = 0; j < sub; j++)
281  for (k = 0; k < mtab->fmode[bits->ftype].bark_n_coef; k++)
282  bits->bark1[i][j][k] =
283  get_bits(&gb, mtab->fmode[bits->ftype].bark_n_bit);
284 
285  for (i = 0; i < channels; i++)
286  for (j = 0; j < sub; j++)
287  bits->bark_use_hist[i][j] = get_bits1(&gb);
288 
289  if (bits->ftype == TWINVQ_FT_LONG) {
290  for (i = 0; i < channels; i++)
291  bits->gain_bits[i] = get_bits(&gb, TWINVQ_GAIN_BITS);
292  } else {
293  for (i = 0; i < channels; i++) {
294  bits->gain_bits[i] = get_bits(&gb, TWINVQ_GAIN_BITS);
295  for (j = 0; j < sub; j++)
296  bits->sub_gain_bits[i * sub + j] = get_bits(&gb,
298  }
299  }
300 
301  for (i = 0; i < channels; i++) {
302  bits->lpc_hist_idx[i] = get_bits(&gb, mtab->lsp_bit0);
303  bits->lpc_idx1[i] = get_bits(&gb, mtab->lsp_bit1);
304 
305  for (j = 0; j < mtab->lsp_split; j++)
306  bits->lpc_idx2[i][j] = get_bits(&gb, mtab->lsp_bit2);
307  }
308 
309  if (bits->ftype == TWINVQ_FT_LONG) {
310  read_cb_data(tctx, &gb, bits->ppc_coeffs, 3);
311  for (i = 0; i < channels; i++) {
312  bits->p_coef[i] = get_bits(&gb, mtab->ppc_period_bit);
313  bits->g_coef[i] = get_bits(&gb, mtab->pgain_bit);
314  }
315  }
316 
317  return (get_bits_count(&gb) + 7) / 8;
318 }
319 
321 {
322  int isampf, ibps;
323  TwinVQContext *tctx = avctx->priv_data;
324 
325  if (!avctx->extradata || avctx->extradata_size < 12) {
326  av_log(avctx, AV_LOG_ERROR, "Missing or incomplete extradata\n");
327  return AVERROR_INVALIDDATA;
328  }
329  avctx->channels = AV_RB32(avctx->extradata) + 1;
330  avctx->bit_rate = AV_RB32(avctx->extradata + 4) * 1000;
331  isampf = AV_RB32(avctx->extradata + 8);
332 
333  if (isampf < 8 || isampf > 44) {
334  av_log(avctx, AV_LOG_ERROR, "Unsupported sample rate\n");
335  return AVERROR_INVALIDDATA;
336  }
337  switch (isampf) {
338  case 44:
339  avctx->sample_rate = 44100;
340  break;
341  case 22:
342  avctx->sample_rate = 22050;
343  break;
344  case 11:
345  avctx->sample_rate = 11025;
346  break;
347  default:
348  avctx->sample_rate = isampf * 1000;
349  break;
350  }
351 
352  if (avctx->channels <= 0 || avctx->channels > TWINVQ_CHANNELS_MAX) {
353  av_log(avctx, AV_LOG_ERROR, "Unsupported number of channels: %i\n",
354  avctx->channels);
355  return -1;
356  }
357  avctx->channel_layout = avctx->channels == 1 ? AV_CH_LAYOUT_MONO
359 
360  ibps = avctx->bit_rate / (1000 * avctx->channels);
361  if (ibps < 8 || ibps > 48) {
362  av_log(avctx, AV_LOG_ERROR, "Bad bitrate per channel value %d\n", ibps);
363  return AVERROR_INVALIDDATA;
364  }
365 
366  switch ((isampf << 8) + ibps) {
367  case (8 << 8) + 8:
368  tctx->mtab = &mode_08_08;
369  break;
370  case (11 << 8) + 8:
371  tctx->mtab = &mode_11_08;
372  break;
373  case (11 << 8) + 10:
374  tctx->mtab = &mode_11_10;
375  break;
376  case (16 << 8) + 16:
377  tctx->mtab = &mode_16_16;
378  break;
379  case (22 << 8) + 20:
380  tctx->mtab = &mode_22_20;
381  break;
382  case (22 << 8) + 24:
383  tctx->mtab = &mode_22_24;
384  break;
385  case (22 << 8) + 32:
386  tctx->mtab = &mode_22_32;
387  break;
388  case (44 << 8) + 40:
389  tctx->mtab = &mode_44_40;
390  break;
391  case (44 << 8) + 48:
392  tctx->mtab = &mode_44_48;
393  break;
394  default:
395  av_log(avctx, AV_LOG_ERROR,
396  "This version does not support %d kHz - %d kbit/s/ch mode.\n",
397  isampf, isampf);
398  return -1;
399  }
400 
401  tctx->codec = TWINVQ_CODEC_VQF;
403  tctx->dec_bark_env = dec_bark_env;
404  tctx->decode_ppc = decode_ppc;
405  tctx->frame_size = avctx->bit_rate * tctx->mtab->size
406  / avctx->sample_rate + 8;
407  tctx->is_6kbps = 0;
408  if (avctx->block_align && avctx->block_align * 8LL / tctx->frame_size > 1) {
409  av_log(avctx, AV_LOG_ERROR,
410  "VQF TwinVQ should have only one frame per packet\n");
411  return AVERROR_INVALIDDATA;
412  }
413 
414  return ff_twinvq_decode_init(avctx);
415 }
416 
418  .name = "twinvq",
419  .long_name = NULL_IF_CONFIG_SMALL("VQF TwinVQ"),
420  .type = AVMEDIA_TYPE_AUDIO,
421  .id = AV_CODEC_ID_TWINVQ,
422  .priv_data_size = sizeof(TwinVQContext),
424  .close = ff_twinvq_decode_close,
427  .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
429  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
430 };
twinvq_read_bitstream
static int twinvq_read_bitstream(AVCodecContext *avctx, TwinVQContext *tctx, const uint8_t *buf, int buf_size)
Definition: twinvqdec.c:252
AVCodec
AVCodec.
Definition: codec.h:197
twinvq_data::cb0808s1
int16_t cb0808s1[1152]
Definition: twinvq_data.h:146
AV_SAMPLE_FMT_FLTP
@ AV_SAMPLE_FMT_FLTP
float, planar
Definition: samplefmt.h:69
FF_CODEC_CAP_INIT_THREADSAFE
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:41
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
TwinVQContext::mtab
const TwinVQModeTab * mtab
Definition: twinvq.h:142
twinvq_data::fcb08m
int16_t fcb08m[320]
Definition: twinvq_data.h:139
twinvq_data::fcb22s_2
int16_t fcb22s_2[640]
Definition: twinvq_data.h:202
AVCodecContext::channel_layout
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:1149
twinvq_data::cb1616l0
int16_t cb1616l0[1024]
Definition: twinvq_data.h:174
twinvq_data::cb1108s0
int16_t cb1108s0[1856]
Definition: twinvq_data.h:154
TwinVQFrameMode::sub
uint8_t sub
Number subblocks in each frame.
Definition: twinvq.h:67
twinvq_data::cb2220m1
int16_t cb2220m1[1088]
Definition: twinvq_data.h:184
out
FILE * out
Definition: movenc.c:54
ff_metasound_lsp22
const float ff_metasound_lsp22[]
Definition: metasound_data.c:12520
bark_tab_m22_256
static const uint16_t bark_tab_m22_256[]
Definition: twinvq_data.h:95
AVCodecContext::sample_rate
int sample_rate
samples per second
Definition: avcodec.h:1098
TwinVQContext::bits_main_spec
uint8_t bits_main_spec[2][4][2]
bits for the main codebook
Definition: twinvq.h:154
twinvq_data::cb4440s1
int16_t cb4440s1[1152]
Definition: twinvq_data.h:218
sub
static float sub(float src0, float src1)
Definition: dnn_backend_native_layer_mathbinary.c:32
sample_fmts
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:953
tabs
static const struct @94 tabs[]
bark_tab_s44_128
static const uint16_t bark_tab_s44_128[]
Definition: twinvq_data.h:126
twinvq_decode_init
static av_cold int twinvq_decode_init(AVCodecContext *avctx)
Definition: twinvqdec.c:320
AV_CH_LAYOUT_MONO
#define AV_CH_LAYOUT_MONO
Definition: channel_layout.h:90
twinvq_data::cb0808l0
int16_t cb0808l0[1088]
Definition: twinvq_data.h:143
twinvq_data::cb2232l1
int16_t cb2232l1[768]
Definition: twinvq_data.h:207
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static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:219
twinvq_data::cb4448s1
int16_t cb4448s1[960]
Definition: twinvq_data.h:230
TWINVQ_GAIN_BITS
#define TWINVQ_GAIN_BITS
Definition: twinvq.h:50
TwinVQContext::bits
TwinVQFrameData bits[TWINVQ_MAX_FRAMES_PER_PACKET]
Definition: twinvq.h:170
twinvq_data::fcb11l
int16_t fcb11l[640]
Definition: twinvq_data.h:157
internal.h
b
#define b
Definition: input.c:41
TwinVQModeTab::ppc_shape_len
uint8_t ppc_shape_len
size of PPC shape CB
Definition: twinvq.h:130
twinvq_data::cb4440m0
int16_t cb4440m0[1088]
Definition: twinvq_data.h:215
TwinVQModeTab::lsp_bit1
uint8_t lsp_bit1
Definition: twinvq.h:120
twinvq_data::cb2232s0
int16_t cb2232s0[704]
Definition: twinvq_data.h:210
ff_twinvq_decode_init
av_cold int ff_twinvq_decode_init(AVCodecContext *avctx)
Definition: twinvq.c:760
twinvq_data::lsp22_2
float lsp22_2[1312]
Definition: twinvq_data.h:204
bark_tab_s16_128
static const uint16_t bark_tab_s16_128[]
Definition: twinvq_data.h:118
TwinVQModeTab::pgain_bit
uint8_t pgain_bit
bits for PPC gain
Definition: twinvq.h:131
twinvq_data::cb1616s1
int16_t cb1616s1[1024]
Definition: twinvq_data.h:179
TWINVQ_CODEC_VQF
@ TWINVQ_CODEC_VQF
Definition: twinvq.h:35
twinvq_data::cb1110s1
int16_t cb1110s1[1344]
Definition: twinvq_data.h:167
twinvq_data::cb2224s1
int16_t cb2224s1[960]
Definition: twinvq_data.h:198
skip_bits
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:467
twinvq_data::fcb22s_1
int16_t fcb22s_1[640]
Definition: twinvq_data.h:190
twinvq_data::fcb44s
int16_t fcb44s[640]
Definition: twinvq_data.h:222
get_bits
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:379
add_peak
static void add_peak(int period, int width, const float *shape, float ppc_gain, float *speech, int len)
Sum to data a periodic peak of a given period, width and shape.
Definition: twinvqdec.c:155
twinvq_data::cb0808m0
int16_t cb0808m0[1024]
Definition: twinvq_data.h:147
TWINVQ_WINDOW_TYPE_BITS
#define TWINVQ_WINDOW_TYPE_BITS
Definition: twinvq.h:53
twinvq_data::cb1108l1
int16_t cb1108l1[1728]
Definition: twinvq_data.h:151
TwinVQFrameMode::bark_n_coef
uint8_t bark_n_coef
number of BSE CB coefficients to read
Definition: twinvq.h:74
mode_16_16
static const TwinVQModeTab mode_16_16
Definition: twinvqdec.c:60
mode_11_08
static const TwinVQModeTab mode_11_08
Definition: twinvqdec.c:42
TwinVQFrameType
TwinVQFrameType
Definition: twinvq.h:39
GetBitContext
Definition: get_bits.h:61
twinvq_data::cb2224s0
int16_t cb2224s0[960]
Definition: twinvq_data.h:197
tab
static const struct twinvq_data tab
Definition: twinvq_data.h:10345
mode_08_08
static const TwinVQModeTab mode_08_08
Definition: twinvqdec.c:33
mode_22_24
static const TwinVQModeTab mode_22_24
Definition: twinvqdec.c:78
TWINVQ_PGAIN_MU
#define TWINVQ_PGAIN_MU
Definition: twinvq.h:54
val
static double val(void *priv, double ch)
Definition: aeval.c:76
twinvq_data::cb0808s0
int16_t cb0808s0[1152]
Definition: twinvq_data.h:145
twinvq_data::cb2232l0
int16_t cb2232l0[768]
Definition: twinvq_data.h:206
bark_tab_l08_512
static const uint16_t bark_tab_l08_512[]
Definition: twinvq_data.h:41
very_broken_op
static int very_broken_op(int a, int b)
Evaluate a * b / 400 rounded to the nearest integer.
Definition: twinvqdec.c:134
TwinVQModeTab::size
uint16_t size
frame size in samples
Definition: twinvq.h:114
twinvq_mulawinv
static float twinvq_mulawinv(float y, float clip, float mu)
Definition: twinvq.h:192
AV_CH_LAYOUT_STEREO
#define AV_CH_LAYOUT_STEREO
Definition: channel_layout.h:91
TwinVQContext::dec_bark_env
void(* dec_bark_env)(struct TwinVQContext *tctx, const uint8_t *in, int use_hist, int ch, float *out, float gain, enum TwinVQFrameType ftype)
Definition: twinvq.h:176
ff_twinvq_decode_frame
int ff_twinvq_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
Definition: twinvq.c:476
twinvq_data::fcb08l
int16_t fcb08l[640]
Definition: twinvq_data.h:138
TwinVQContext::n_div
int n_div[4]
Definition: twinvq.h:156
TwinVQContext::decode_ppc
void(* decode_ppc)(struct TwinVQContext *tctx, int period_coef, int g_coef, const float *shape, float *speech)
Definition: twinvq.h:179
bark_tab_m16_512
static const uint16_t bark_tab_m16_512[]
Definition: twinvq_data.h:90
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:181
twinvq_data::fcb08s
int16_t fcb08s[320]
Definition: twinvq_data.h:140
twinvq_data::cb1108m1
int16_t cb1108m1[1536]
Definition: twinvq_data.h:153
av_cold
#define av_cold
Definition: attributes.h:90
ff_metasound_lsp44
const float ff_metasound_lsp44[]
Definition: metasound_data.c:12687
init_get_bits8
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:677
twinvq_data::fcb11s
int16_t fcb11s[320]
Definition: twinvq_data.h:159
twinvq_data::fcb16m
int16_t fcb16m[320]
Definition: twinvq_data.h:170
decode
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
AVCodecContext::extradata_size
int extradata_size
Definition: avcodec.h:603
width
#define width
bark_tab_l16_1024
static const uint16_t bark_tab_l16_1024[]
Definition: twinvq_data.h:53
ff_metasound_lsp16
const float ff_metasound_lsp16[]
Definition: metasound_data.c:12341
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
TwinVQContext::codec
enum TwinVQCodec codec
Definition: twinvq.h:172
twinvq_data::cb1616m1
int16_t cb1616m1[960]
Definition: twinvq_data.h:177
twinvq_data::cb4448l1
int16_t cb4448l1[896]
Definition: twinvq_data.h:226
bits
uint8_t bits
Definition: vp3data.h:141
TwinVQModeTab
Parameters and tables that are different for every combination of bitrate/sample rate.
Definition: twinvq.h:111
channels
channels
Definition: aptx.h:33
get_bits.h
twinvq_data::cb4448m1
int16_t cb4448m1[896]
Definition: twinvq_data.h:228
TwinVQModeTab::lsp_bit2
uint8_t lsp_bit2
Definition: twinvq.h:121
twinvq_data::cb4440m1
int16_t cb4440m1[1088]
Definition: twinvq_data.h:216
twinvq_data::cb1108l0
int16_t cb1108l0[1728]
Definition: twinvq_data.h:150
TwinVQFrameMode::bark_tab
const uint16_t * bark_tab
Definition: twinvq.h:68
twinvq_memset_float
static void twinvq_memset_float(float *buf, float val, int size)
Definition: twinvq.h:186
twinvq_data::cb2220l0
int16_t cb2220l0[1152]
Definition: twinvq_data.h:181
ff_metasound_lsp11
const float ff_metasound_lsp11[]
Definition: metasound_data.c:12174
TwinVQFrameMode::bark_cb
const int16_t * bark_cb
codebook for the bark scale envelope (BSE)
Definition: twinvq.h:73
ff_twinvq_decode_close
av_cold int ff_twinvq_decode_close(AVCodecContext *avctx)
Definition: twinvq.c:741
twinvq_data::cb1110m1
int16_t cb1110m1[1152]
Definition: twinvq_data.h:165
twinvq_data::cb4440l1
int16_t cb4440l1[1088]
Definition: twinvq_data.h:214
twinvq_data.h
twinvq_data::cb2224l0
int16_t cb2224l0[960]
Definition: twinvq_data.h:193
period
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option keep it simple and lowercase description are in without period
Definition: writing_filters.txt:89
AVCodecContext::bit_rate
int64_t bit_rate
the average bitrate
Definition: avcodec.h:551
ROUNDED_DIV
#define ROUNDED_DIV(a, b)
Definition: common.h:56
twinvq_data::fcb11m
int16_t fcb11m[320]
Definition: twinvq_data.h:158
get_bits1
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:498
twinvq_data::shape22_1
int16_t shape22_1[1152]
Definition: twinvq_data.h:191
twinvq_data::shape22_2
int16_t shape22_2[1152]
Definition: twinvq_data.h:203
mode_44_48
static const TwinVQModeTab mode_44_48
Definition: twinvqdec.c:105
twinvq_data::fcb44l
int16_t fcb44l[640]
Definition: twinvq_data.h:220
twinvq_data::cb4440s0
int16_t cb4440s0[1152]
Definition: twinvq_data.h:217
TwinVQContext::is_6kbps
int is_6kbps
Definition: twinvq.h:144
twinvq_data::fcb44m
int16_t fcb44m[640]
Definition: twinvq_data.h:221
twinvq_data::cb1616s0
int16_t cb1616s0[1024]
Definition: twinvq_data.h:178
twinvq_data::cb1110l1
int16_t cb1110l1[1280]
Definition: twinvq_data.h:163
AV_CODEC_CAP_CHANNEL_CONF
#define AV_CODEC_CAP_CHANNEL_CONF
Codec should fill in channel configuration and samplerate instead of container.
Definition: codec.h:104
twinvq_data::fcb22m_1
int16_t fcb22m_1[640]
Definition: twinvq_data.h:189
TwinVQContext::avctx
AVCodecContext * avctx
Definition: twinvq.h:138
TwinVQModeTab::lsp_bit0
uint8_t lsp_bit0
Definition: twinvq.h:119
mode_11_10
static const TwinVQModeTab mode_11_10
Definition: twinvqdec.c:51
TWINVQ_FT_LONG
@ TWINVQ_FT_LONG
Long frame (single sub-block + PPC)
Definition: twinvq.h:42
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
AV_SAMPLE_FMT_NONE
@ AV_SAMPLE_FMT_NONE
Definition: samplefmt.h:59
TwinVQFrameMode::bark_n_bit
uint8_t bark_n_bit
number of bits of the BSE coefs
Definition: twinvq.h:75
size
int size
Definition: twinvq_data.h:10344
TwinVQModeTab::ppc_period_bit
uint8_t ppc_period_bit
number of the bits for the PPC period value
Definition: twinvq.h:127
AV_RB32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:96
decode_ppc
static void decode_ppc(TwinVQContext *tctx, int period_coef, int g_coef, const float *shape, float *speech)
Definition: twinvqdec.c:179
bark_tab_s11_64
static const uint16_t bark_tab_s11_64[]
Definition: twinvq_data.h:114
TwinVQContext::bits_main_spec_change
int bits_main_spec_change[4]
Definition: twinvq.h:155
twinvq_data::shape11
int16_t shape11[1280]
Definition: twinvq_data.h:160
TWINVQ_CHANNELS_MAX
#define TWINVQ_CHANNELS_MAX
Definition: twinvq.h:57
twinvq_data::cb1616m0
int16_t cb1616m0[960]
Definition: twinvq_data.h:176
twinvq_data::cb2224m1
int16_t cb2224m1[896]
Definition: twinvq_data.h:196
ff_twinvq_decoder
const AVCodec ff_twinvq_decoder
Definition: twinvqdec.c:417
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
twinvq_data::cb1616l1
int16_t cb1616l1[1024]
Definition: twinvq_data.h:175
TwinVQModeTab::peak_per2wid
uint16_t peak_per2wid
constant for peak period to peak width conversion
Definition: twinvq.h:134
twinvq_data::cb4440l0
int16_t cb4440l0[1088]
Definition: twinvq_data.h:213
bark_tab_m44_512
static const uint16_t bark_tab_m44_512[]
Definition: twinvq_data.h:105
twinvq_data::cb1108s1
int16_t cb1108s1[1856]
Definition: twinvq_data.h:155
TwinVQContext::read_bitstream
int(* read_bitstream)(AVCodecContext *avctx, struct TwinVQContext *tctx, const uint8_t *buf, int buf_size)
Definition: twinvq.h:174
AVCodecContext::channels
int channels
number of audio channels
Definition: avcodec.h:1099
TWINVQ_SUB_GAIN_BITS
#define TWINVQ_SUB_GAIN_BITS
Definition: twinvq.h:52
metasound_data.h
bark_tab_l44_2048
static const uint16_t bark_tab_l44_2048[]
Definition: twinvq_data.h:73
twinvq_data::shape16
int16_t shape16[1920]
Definition: twinvq_data.h:172
i
int i
Definition: input.c:407
bark_tab_m08_256
static const uint16_t bark_tab_m08_256[]
Definition: twinvq_data.h:80
twinvq_data::cb2224m0
int16_t cb2224m0[896]
Definition: twinvq_data.h:195
twinvq_data::cb4448s0
int16_t cb4448s0[960]
Definition: twinvq_data.h:229
TwinVQContext::frame_size
int frame_size
Definition: twinvq.h:169
AVCodecContext::extradata
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:602
twinvq_data::fcb16l
int16_t fcb16l[640]
Definition: twinvq_data.h:169
TwinVQContext::bark_hist
float bark_hist[3][2][40]
BSE coefficients of last frame.
Definition: twinvq.h:148
twinvq_data::cb1110l0
int16_t cb1110l0[1280]
Definition: twinvq_data.h:162
TwinVQFrameData
Definition: twinvq.h:86
AVSampleFormat
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
twinvq_data::cb4448l0
int16_t cb4448l0[896]
Definition: twinvq_data.h:225
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:204
mode_22_32
static const TwinVQModeTab mode_22_32
Definition: twinvqdec.c:87
len
int len
Definition: vorbis_enc_data.h:426
twinvq_data::cb2220m0
int16_t cb2220m0[1088]
Definition: twinvq_data.h:183
avcodec.h
ret
ret
Definition: filter_design.txt:187
AVCodecContext::block_align
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs.
Definition: avcodec.h:1135
ff_metasound_lsp8
const float ff_metasound_lsp8[]
Definition: metasound_data.c:12108
twinvq_data::cb2232s1
int16_t cb2232s1[704]
Definition: twinvq_data.h:211
twinvq.h
twinvq_data::fcb22l_2
int16_t fcb22l_2[512]
Definition: twinvq_data.h:200
AVCodecContext
main external API structure.
Definition: avcodec.h:501
bark_tab_l22_512
static const uint16_t bark_tab_l22_512[]
Definition: twinvq_data.h:66
twinvq_data::shape08
int16_t shape08[1280]
Definition: twinvq_data.h:141
channel_layout.h
twinvq_data::cb1108m0
int16_t cb1108m0[1536]
Definition: twinvq_data.h:152
twinvq_data::cb2220l1
int16_t cb2220l1[1152]
Definition: twinvq_data.h:182
mode_22_20
static const TwinVQModeTab mode_22_20
Definition: twinvqdec.c:69
bark_tab_s22_128
static const uint16_t bark_tab_s22_128[]
Definition: twinvq_data.h:122
mode_44_40
static const TwinVQModeTab mode_44_40
Definition: twinvqdec.c:96
twinvq_data::cb0808m1
int16_t cb0808m1[1024]
Definition: twinvq_data.h:148
twinvq_data::cb2224l1
int16_t cb2224l1[960]
Definition: twinvq_data.h:194
twinvq_data::cb4448m0
int16_t cb4448m0[896]
Definition: twinvq_data.h:227
bark_tab_m11_256
static const uint16_t bark_tab_m11_256[]
Definition: twinvq_data.h:85
dec_bark_env
static void dec_bark_env(TwinVQContext *tctx, const uint8_t *in, int use_hist, int ch, float *out, float gain, enum TwinVQFrameType ftype)
Definition: twinvqdec.c:211
bark_tab_m22_512
static const uint16_t bark_tab_m22_512[]
Definition: twinvq_data.h:100
twinvq_data::fcb22m_2
int16_t fcb22m_2[640]
Definition: twinvq_data.h:201
twinvq_data::fcb16s
int16_t fcb16s[320]
Definition: twinvq_data.h:171
twinvq_data::cb2232m0
int16_t cb2232m0[704]
Definition: twinvq_data.h:208
twinvq_data::cb0808l1
int16_t cb0808l1[1088]
Definition: twinvq_data.h:144
twinvq_data::fcb22l_1
int16_t fcb22l_1[512]
Definition: twinvq_data.h:188
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:528
TwinVQFrameData::window_type
int window_type
Definition: twinvq.h:87
twinvq_data::cb2232m1
int16_t cb2232m1[704]
Definition: twinvq_data.h:209
bark_tab_l11_512
static const uint16_t bark_tab_l11_512[]
Definition: twinvq_data.h:47
twinvq_data::cb2220s0
int16_t cb2220s0[1152]
Definition: twinvq_data.h:185
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
TwinVQContext
Definition: twinvq.h:137
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
twinvq_data::cb1110m0
int16_t cb1110m0[1152]
Definition: twinvq_data.h:164
read_cb_data
static void read_cb_data(TwinVQContext *tctx, GetBitContext *gb, uint8_t *dst, enum TwinVQFrameType ftype)
Definition: twinvqdec.c:239
bark_tab_l22_1024
static const uint16_t bark_tab_l22_1024[]
Definition: twinvq_data.h:59
twinvq_data::shape44
int16_t shape44[1152]
Definition: twinvq_data.h:223
AV_CODEC_ID_TWINVQ
@ AV_CODEC_ID_TWINVQ
Definition: codec_id.h:464
av_log2
int av_log2(unsigned v)
Definition: intmath.c:26
TwinVQModeTab::lsp_split
uint8_t lsp_split
number of CB entries for the LSP decoding
Definition: twinvq.h:123
ff_twinvq_wtype_to_ftype_table
enum TwinVQFrameType ff_twinvq_wtype_to_ftype_table[]
Definition: twinvq.c:470
bark_tab_s08_64
static const uint16_t bark_tab_s08_64[]
Definition: twinvq_data.h:110
twinvq_data::cb2220s1
int16_t cb2220s1[1152]
Definition: twinvq_data.h:186
TwinVQModeTab::fmode
struct TwinVQFrameMode fmode[3]
frame type-dependent parameters
Definition: twinvq.h:112
twinvq_data::cb1110s0
int16_t cb1110s0[1344]
Definition: twinvq_data.h:166
TwinVQFrameMode::bark_env_size
uint8_t bark_env_size
number of distinct bark scale envelope values
Definition: twinvq.h:71