FFmpeg
twinvqdec.c
Go to the documentation of this file.
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 "codec_internal.h"
28 #include "get_bits.h"
29 #include "twinvq.h"
30 #include "twinvq_data.h"
31 
32 static const TwinVQModeTab mode_08_08 = {
33  {
34  { 8, bark_tab_s08_64, 10, tab.fcb08s, 1, 5, tab.cb0808s0, tab.cb0808s1, 18 },
35  { 2, bark_tab_m08_256, 20, tab.fcb08m, 2, 5, tab.cb0808m0, tab.cb0808m1, 16 },
36  { 1, bark_tab_l08_512, 30, tab.fcb08l, 3, 6, tab.cb0808l0, tab.cb0808l1, 17 }
37  },
38  512, 12, ff_metasound_lsp8, 1, 5, 3, 3, tab.shape08, 8, 28, 20, 6, 40
39 };
40 
41 static const TwinVQModeTab mode_11_08 = {
42  {
43  { 8, bark_tab_s11_64, 10, tab.fcb11s, 1, 5, tab.cb1108s0, tab.cb1108s1, 29 },
44  { 2, bark_tab_m11_256, 20, tab.fcb11m, 2, 5, tab.cb1108m0, tab.cb1108m1, 24 },
45  { 1, bark_tab_l11_512, 30, tab.fcb11l, 3, 6, tab.cb1108l0, tab.cb1108l1, 27 }
46  },
47  512, 16, ff_metasound_lsp11, 1, 6, 4, 3, tab.shape11, 9, 36, 30, 7, 90
48 };
49 
50 static const TwinVQModeTab mode_11_10 = {
51  {
52  { 8, bark_tab_s11_64, 10, tab.fcb11s, 1, 5, tab.cb1110s0, tab.cb1110s1, 21 },
53  { 2, bark_tab_m11_256, 20, tab.fcb11m, 2, 5, tab.cb1110m0, tab.cb1110m1, 18 },
54  { 1, bark_tab_l11_512, 30, tab.fcb11l, 3, 6, tab.cb1110l0, tab.cb1110l1, 20 }
55  },
56  512, 16, ff_metasound_lsp11, 1, 6, 4, 3, tab.shape11, 9, 36, 30, 7, 90
57 };
58 
59 static const TwinVQModeTab mode_16_16 = {
60  {
61  { 8, bark_tab_s16_128, 10, tab.fcb16s, 1, 5, tab.cb1616s0, tab.cb1616s1, 16 },
62  { 2, bark_tab_m16_512, 20, tab.fcb16m, 2, 5, tab.cb1616m0, tab.cb1616m1, 15 },
63  { 1, bark_tab_l16_1024, 30, tab.fcb16l, 3, 6, tab.cb1616l0, tab.cb1616l1, 16 }
64  },
65  1024, 16, ff_metasound_lsp16, 1, 6, 4, 3, tab.shape16, 9, 56, 60, 7, 180
66 };
67 
68 static const TwinVQModeTab mode_22_20 = {
69  {
70  { 8, bark_tab_s22_128, 10, tab.fcb22s_1, 1, 6, tab.cb2220s0, tab.cb2220s1, 18 },
71  { 2, bark_tab_m22_512, 20, tab.fcb22m_1, 2, 6, tab.cb2220m0, tab.cb2220m1, 17 },
72  { 1, bark_tab_l22_1024, 32, tab.fcb22l_1, 4, 6, tab.cb2220l0, tab.cb2220l1, 18 }
73  },
74  1024, 16, ff_metasound_lsp22, 1, 6, 4, 3, tab.shape22_1, 9, 56, 36, 7, 144
75 };
76 
77 static const TwinVQModeTab mode_22_24 = {
78  {
79  { 8, bark_tab_s22_128, 10, tab.fcb22s_1, 1, 6, tab.cb2224s0, tab.cb2224s1, 15 },
80  { 2, bark_tab_m22_512, 20, tab.fcb22m_1, 2, 6, tab.cb2224m0, tab.cb2224m1, 14 },
81  { 1, bark_tab_l22_1024, 32, tab.fcb22l_1, 4, 6, tab.cb2224l0, tab.cb2224l1, 15 }
82  },
83  1024, 16, ff_metasound_lsp22, 1, 6, 4, 3, tab.shape22_1, 9, 56, 36, 7, 144
84 };
85 
86 static const TwinVQModeTab mode_22_32 = {
87  {
88  { 4, bark_tab_s22_128, 10, tab.fcb22s_2, 1, 6, tab.cb2232s0, tab.cb2232s1, 11 },
89  { 2, bark_tab_m22_256, 20, tab.fcb22m_2, 2, 6, tab.cb2232m0, tab.cb2232m1, 11 },
90  { 1, bark_tab_l22_512, 32, tab.fcb22l_2, 4, 6, tab.cb2232l0, tab.cb2232l1, 12 }
91  },
92  512, 16, tab.lsp22_2, 1, 6, 4, 4, tab.shape22_2, 9, 56, 36, 7, 72
93 };
94 
95 static const TwinVQModeTab mode_44_40 = {
96  {
97  { 16, bark_tab_s44_128, 10, tab.fcb44s, 1, 6, tab.cb4440s0, tab.cb4440s1, 18 },
98  { 4, bark_tab_m44_512, 20, tab.fcb44m, 2, 6, tab.cb4440m0, tab.cb4440m1, 17 },
99  { 1, bark_tab_l44_2048, 40, tab.fcb44l, 4, 6, tab.cb4440l0, tab.cb4440l1, 17 }
100  },
101  2048, 20, ff_metasound_lsp44, 1, 6, 4, 4, tab.shape44, 9, 84, 54, 7, 432
102 };
103 
104 static const TwinVQModeTab mode_44_48 = {
105  {
106  { 16, bark_tab_s44_128, 10, tab.fcb44s, 1, 6, tab.cb4448s0, tab.cb4448s1, 15 },
107  { 4, bark_tab_m44_512, 20, tab.fcb44m, 2, 6, tab.cb4448m0, tab.cb4448m1, 14 },
108  { 1, bark_tab_l44_2048, 40, tab.fcb44l, 4, 6, tab.cb4448l0, tab.cb4448l1, 14 }
109  },
110  2048, 20, ff_metasound_lsp44, 1, 6, 4, 4, tab.shape44, 9, 84, 54, 7, 432
111 };
112 
113 /**
114  * Evaluate a * b / 400 rounded to the nearest integer. When, for example,
115  * a * b == 200 and the nearest integer is ill-defined, use a table to emulate
116  * the following broken float-based implementation used by the binary decoder:
117  *
118  * @code
119  * static int very_broken_op(int a, int b)
120  * {
121  * static float test; // Ugh, force gcc to do the division first...
122  *
123  * test = a / 400.0;
124  * return b * test + 0.5;
125  * }
126  * @endcode
127  *
128  * @note if this function is replaced by just ROUNDED_DIV(a * b, 400.0), the
129  * stddev between the original file (before encoding with Yamaha encoder) and
130  * the decoded output increases, which leads one to believe that the encoder
131  * expects exactly this broken calculation.
132  */
133 static int very_broken_op(int a, int b)
134 {
135  int x = a * b + 200;
136  int size;
137  const uint8_t *rtab;
138 
139  if (x % 400 || b % 5)
140  return x / 400;
141 
142  x /= 400;
143 
144  size = tabs[b / 5].size;
145  rtab = tabs[b / 5].tab;
146  return x - rtab[size * av_log2(2 * (x - 1) / size) + (x - 1) % size];
147 }
148 
149 /**
150  * Sum to data a periodic peak of a given period, width and shape.
151  *
152  * @param period the period of the peak divided by 400.0
153  */
154 static void add_peak(int period, int width, const float *shape,
155  float ppc_gain, float *speech, int len)
156 {
157  int i, j;
158 
159  const float *shape_end = shape + len;
160  int center;
161 
162  // First peak centered around zero
163  for (i = 0; i < width / 2; i++)
164  speech[i] += ppc_gain * *shape++;
165 
166  for (i = 1; i < ROUNDED_DIV(len, width); i++) {
167  center = very_broken_op(period, i);
168  for (j = -width / 2; j < (width + 1) / 2; j++)
169  speech[j + center] += ppc_gain * *shape++;
170  }
171 
172  // For the last block, be careful not to go beyond the end of the buffer
173  center = very_broken_op(period, i);
174  for (j = -width / 2; j < (width + 1) / 2 && shape < shape_end; j++)
175  speech[j + center] += ppc_gain * *shape++;
176 }
177 
178 static void decode_ppc(TwinVQContext *tctx, int period_coef, int g_coef,
179  const float *shape, float *speech)
180 {
181  const TwinVQModeTab *mtab = tctx->mtab;
182  int isampf = tctx->avctx->sample_rate / 1000;
183  int ibps = tctx->avctx->bit_rate / (1000 * tctx->avctx->ch_layout.nb_channels);
184  int min_period = ROUNDED_DIV(40 * 2 * mtab->size, isampf);
185  int max_period = ROUNDED_DIV(40 * 2 * mtab->size * 6, isampf);
186  int period_range = max_period - min_period;
187  float pgain_step = 25000.0 / ((1 << mtab->pgain_bit) - 1);
188  float ppc_gain = 1.0 / 8192 *
189  twinvq_mulawinv(pgain_step * g_coef +
190  pgain_step / 2,
191  25000.0, TWINVQ_PGAIN_MU);
192 
193  // This is actually the period multiplied by 400. It is just linearly coded
194  // between its maximum and minimum value.
195  int period = min_period +
196  ROUNDED_DIV(period_coef * period_range,
197  (1 << mtab->ppc_period_bit) - 1);
198  int width;
199 
200  if (isampf == 22 && ibps == 32) {
201  // For some unknown reason, NTT decided to code this case differently...
202  width = ROUNDED_DIV((period + 800) * mtab->peak_per2wid,
203  400 * mtab->size);
204  } else
205  width = period * mtab->peak_per2wid / (400 * mtab->size);
206 
207  add_peak(period, width, shape, ppc_gain, speech, mtab->ppc_shape_len);
208 }
209 
210 static void dec_bark_env(TwinVQContext *tctx, const uint8_t *in, int use_hist,
211  int ch, float *out, float gain,
212  enum TwinVQFrameType ftype)
213 {
214  const TwinVQModeTab *mtab = tctx->mtab;
215  int i, j;
216  float *hist = tctx->bark_hist[ftype][ch];
217  float val = ((const float []) { 0.4, 0.35, 0.28 })[ftype];
218  int bark_n_coef = mtab->fmode[ftype].bark_n_coef;
219  int fw_cb_len = mtab->fmode[ftype].bark_env_size / bark_n_coef;
220  int idx = 0;
221 
222  for (i = 0; i < fw_cb_len; i++)
223  for (j = 0; j < bark_n_coef; j++, idx++) {
224  float tmp2 = mtab->fmode[ftype].bark_cb[fw_cb_len * in[j] + i] *
225  (1.0 / 4096);
226  float st = use_hist ? (1.0 - val) * tmp2 + val * hist[idx] + 1.0
227  : tmp2 + 1.0;
228 
229  hist[idx] = tmp2;
230  if (st < -1.0)
231  st = 1.0;
232 
233  twinvq_memset_float(out, st * gain, mtab->fmode[ftype].bark_tab[idx]);
234  out += mtab->fmode[ftype].bark_tab[idx];
235  }
236 }
237 
238 static void read_cb_data(TwinVQContext *tctx, GetBitContext *gb,
239  uint8_t *dst, enum TwinVQFrameType ftype)
240 {
241  int i;
242 
243  for (i = 0; i < tctx->n_div[ftype]; i++) {
244  int bs_second_part = (i >= tctx->bits_main_spec_change[ftype]);
245 
246  *dst++ = get_bits(gb, tctx->bits_main_spec[0][ftype][bs_second_part]);
247  *dst++ = get_bits(gb, tctx->bits_main_spec[1][ftype][bs_second_part]);
248  }
249 }
250 
252  const uint8_t *buf, int buf_size)
253 {
254  TwinVQFrameData *bits = &tctx->bits[0];
255  const TwinVQModeTab *mtab = tctx->mtab;
256  int channels = tctx->avctx->ch_layout.nb_channels;
257  int sub;
258  GetBitContext gb;
259  int i, j, k, ret;
260 
261  if ((ret = init_get_bits8(&gb, buf, buf_size)) < 0)
262  return ret;
263  skip_bits(&gb, get_bits(&gb, 8));
264 
265  bits->window_type = get_bits(&gb, TWINVQ_WINDOW_TYPE_BITS);
266 
267  if (bits->window_type > 8) {
268  av_log(avctx, AV_LOG_ERROR, "Invalid window type, broken sample?\n");
269  return AVERROR_INVALIDDATA;
270  }
271 
273 
274  sub = mtab->fmode[bits->ftype].sub;
275 
276  read_cb_data(tctx, &gb, bits->main_coeffs, bits->ftype);
277 
278  for (i = 0; i < channels; i++)
279  for (j = 0; j < sub; j++)
280  for (k = 0; k < mtab->fmode[bits->ftype].bark_n_coef; k++)
281  bits->bark1[i][j][k] =
282  get_bits(&gb, mtab->fmode[bits->ftype].bark_n_bit);
283 
284  for (i = 0; i < channels; i++)
285  for (j = 0; j < sub; j++)
286  bits->bark_use_hist[i][j] = get_bits1(&gb);
287 
288  if (bits->ftype == TWINVQ_FT_LONG) {
289  for (i = 0; i < channels; i++)
290  bits->gain_bits[i] = get_bits(&gb, TWINVQ_GAIN_BITS);
291  } else {
292  for (i = 0; i < channels; i++) {
293  bits->gain_bits[i] = get_bits(&gb, TWINVQ_GAIN_BITS);
294  for (j = 0; j < sub; j++)
295  bits->sub_gain_bits[i * sub + j] = get_bits(&gb,
297  }
298  }
299 
300  for (i = 0; i < channels; i++) {
301  bits->lpc_hist_idx[i] = get_bits(&gb, mtab->lsp_bit0);
302  bits->lpc_idx1[i] = get_bits(&gb, mtab->lsp_bit1);
303 
304  for (j = 0; j < mtab->lsp_split; j++)
305  bits->lpc_idx2[i][j] = get_bits(&gb, mtab->lsp_bit2);
306  }
307 
308  if (bits->ftype == TWINVQ_FT_LONG) {
309  read_cb_data(tctx, &gb, bits->ppc_coeffs, 3);
310  for (i = 0; i < channels; i++) {
311  bits->p_coef[i] = get_bits(&gb, mtab->ppc_period_bit);
312  bits->g_coef[i] = get_bits(&gb, mtab->pgain_bit);
313  }
314  }
315 
316  return (get_bits_count(&gb) + 7) / 8;
317 }
318 
320 {
321  int isampf, ibps, channels;
322  TwinVQContext *tctx = avctx->priv_data;
323 
324  if (!avctx->extradata || avctx->extradata_size < 12) {
325  av_log(avctx, AV_LOG_ERROR, "Missing or incomplete extradata\n");
326  return AVERROR_INVALIDDATA;
327  }
328  channels = AV_RB32(avctx->extradata) + 1;
329  avctx->bit_rate = AV_RB32(avctx->extradata + 4) * 1000;
330  isampf = AV_RB32(avctx->extradata + 8);
331 
332  if (isampf < 8 || isampf > 44) {
333  av_log(avctx, AV_LOG_ERROR, "Unsupported sample rate\n");
334  return AVERROR_INVALIDDATA;
335  }
336  switch (isampf) {
337  case 44:
338  avctx->sample_rate = 44100;
339  break;
340  case 22:
341  avctx->sample_rate = 22050;
342  break;
343  case 11:
344  avctx->sample_rate = 11025;
345  break;
346  default:
347  avctx->sample_rate = isampf * 1000;
348  break;
349  }
350 
352  av_log(avctx, AV_LOG_ERROR, "Unsupported number of channels: %i\n",
353  channels);
354  return -1;
355  }
358 
359  ibps = avctx->bit_rate / (1000 * channels);
360  if (ibps < 8 || ibps > 48) {
361  av_log(avctx, AV_LOG_ERROR, "Bad bitrate per channel value %d\n", ibps);
362  return AVERROR_INVALIDDATA;
363  }
364 
365  switch ((isampf << 8) + ibps) {
366  case (8 << 8) + 8:
367  tctx->mtab = &mode_08_08;
368  break;
369  case (11 << 8) + 8:
370  tctx->mtab = &mode_11_08;
371  break;
372  case (11 << 8) + 10:
373  tctx->mtab = &mode_11_10;
374  break;
375  case (16 << 8) + 16:
376  tctx->mtab = &mode_16_16;
377  break;
378  case (22 << 8) + 20:
379  tctx->mtab = &mode_22_20;
380  break;
381  case (22 << 8) + 24:
382  tctx->mtab = &mode_22_24;
383  break;
384  case (22 << 8) + 32:
385  tctx->mtab = &mode_22_32;
386  break;
387  case (44 << 8) + 40:
388  tctx->mtab = &mode_44_40;
389  break;
390  case (44 << 8) + 48:
391  tctx->mtab = &mode_44_48;
392  break;
393  default:
394  av_log(avctx, AV_LOG_ERROR,
395  "This version does not support %d kHz - %d kbit/s/ch mode.\n",
396  isampf, isampf);
397  return -1;
398  }
399 
400  tctx->codec = TWINVQ_CODEC_VQF;
402  tctx->dec_bark_env = dec_bark_env;
403  tctx->decode_ppc = decode_ppc;
404  tctx->frame_size = avctx->bit_rate * tctx->mtab->size
405  / avctx->sample_rate + 8;
406  tctx->is_6kbps = 0;
407  if (avctx->block_align && avctx->block_align * 8LL / tctx->frame_size > 1) {
408  av_log(avctx, AV_LOG_ERROR,
409  "VQF TwinVQ should have only one frame per packet\n");
410  return AVERROR_INVALIDDATA;
411  }
412 
413  return ff_twinvq_decode_init(avctx);
414 }
415 
417  .p.name = "twinvq",
418  CODEC_LONG_NAME("VQF TwinVQ"),
419  .p.type = AVMEDIA_TYPE_AUDIO,
420  .p.id = AV_CODEC_ID_TWINVQ,
421  .priv_data_size = sizeof(TwinVQContext),
423  .close = ff_twinvq_decode_close,
425  .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_CHANNEL_CONF,
426  .p.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
428  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
429 };
twinvq_read_bitstream
static int twinvq_read_bitstream(AVCodecContext *avctx, TwinVQContext *tctx, const uint8_t *buf, int buf_size)
Definition: twinvqdec.c:251
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:66
FF_CODEC_CAP_INIT_CLEANUP
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: codec_internal.h:42
TwinVQContext::mtab
const TwinVQModeTab * mtab
Definition: twinvq.h:143
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
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
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:1007
TwinVQContext::bits_main_spec
uint8_t bits_main_spec[2][4][2]
bits for the main codebook
Definition: twinvq.h:155
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:31
twinvq_decode_init
static av_cold int twinvq_decode_init(AVCodecContext *avctx)
Definition: twinvqdec.c:319
twinvq_data::cb0808l0
int16_t cb0808l0[1088]
Definition: twinvq_data.h:143
twinvq_data::cb2232l1
int16_t cb2232l1[768]
Definition: twinvq_data.h:207
get_bits_count
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:219
bark_tab_m22_512
#define bark_tab_m22_512
Definition: metasound_data.h:13814
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:171
twinvq_data::fcb11l
int16_t fcb11l[640]
Definition: twinvq_data.h:157
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
FFCodec
Definition: codec_internal.h:119
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)
Requires the caller to call ff_twinvq_decode_close() upon failure.
Definition: twinvq.c:763
twinvq_data::lsp22_2
float lsp22_2[1312]
Definition: twinvq_data.h:204
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
AVChannelLayout::nb_channels
int nb_channels
Number of channels in this layout.
Definition: channel_layout.h:311
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:154
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
FFCodec::p
AVCodec p
The public AVCodec.
Definition: codec_internal.h:123
twinvq_data::cb1108l1
int16_t cb1108l1[1728]
Definition: twinvq_data.h:151
AVCodecContext::ch_layout
AVChannelLayout ch_layout
Audio channel layout.
Definition: avcodec.h:2059
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:59
mode_11_08
static const TwinVQModeTab mode_11_08
Definition: twinvqdec.c:41
TwinVQFrameType
TwinVQFrameType
Definition: twinvq.h:39
GetBitContext
Definition: get_bits.h:61
bark_tab_s44_128
static const uint16_t bark_tab_s44_128[]
Definition: metasound_data.h:13821
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:32
mode_22_24
static const TwinVQModeTab mode_22_24
Definition: twinvqdec.c:77
TWINVQ_PGAIN_MU
#define TWINVQ_PGAIN_MU
Definition: twinvq.h:54
ff_metasound_lsp11
const float ff_metasound_lsp11[]
Definition: metasound_twinvq_data.h:93
val
static double val(void *priv, double ch)
Definition: aeval.c:77
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:133
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:200
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:177
twinvq_data::fcb08l
int16_t fcb08l[640]
Definition: twinvq_data.h:138
TwinVQContext::n_div
int n_div[4]
Definition: twinvq.h:157
TwinVQContext::decode_ppc
void(* decode_ppc)(struct TwinVQContext *tctx, int period_coef, int g_coef, const float *shape, float *speech)
Definition: twinvq.h:180
ftype
#define ftype
Definition: afir_template.c:39
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
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
init_get_bits8
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:667
twinvq_data::fcb11s
int16_t fcb11s[320]
Definition: twinvq_data.h:159
twinvq_data::fcb16m
int16_t fcb16m[320]
Definition: twinvq_data.h:170
AVCodecContext::extradata_size
int extradata_size
Definition: avcodec.h:500
width
#define width
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:298
ff_metasound_lsp8
const float ff_metasound_lsp8[]
Definition: metasound_twinvq_data.h:27
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
TwinVQContext::codec
enum TwinVQCodec codec
Definition: twinvq.h:173
twinvq_data::cb1616m1
int16_t cb1616m1[960]
Definition: twinvq_data.h:177
twinvq_data::cb4448l1
int16_t cb4448l1[896]
Definition: twinvq_data.h:226
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts_bsf.c:363
bits
uint8_t bits
Definition: vp3data.h:128
TwinVQModeTab
Parameters and tables that are different for every combination of bitrate/sample rate.
Definition: twinvq.h:111
channels
channels
Definition: aptx.h:31
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
bark_tab_m16_512
static const uint16_t bark_tab_m16_512[]
Definition: metasound_data.h:13756
twinvq_memset_float
static void twinvq_memset_float(float *buf, float val, int size)
Definition: twinvq.h:194
twinvq_data::cb2220l0
int16_t cb2220l0[1152]
Definition: twinvq_data.h:181
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:264
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:744
tabs
static const struct @102 tabs[]
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:448
ROUNDED_DIV
#define ROUNDED_DIV(a, b)
Definition: common.h:48
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:104
twinvq_data::fcb44l
int16_t fcb44l[640]
Definition: twinvq_data.h:220
ff_twinvq_decode_frame
int ff_twinvq_decode_frame(AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, AVPacket *avpkt)
Definition: twinvq.c:479
twinvq_data::cb4440s0
int16_t cb4440s0[1152]
Definition: twinvq_data.h:217
TwinVQContext::is_6kbps
int is_6kbps
Definition: twinvq.h:145
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:109
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:50
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
codec_internal.h
AV_SAMPLE_FMT_NONE
@ AV_SAMPLE_FMT_NONE
Definition: samplefmt.h:56
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:178
TwinVQContext::bits_main_spec_change
int bits_main_spec_change[4]
Definition: twinvq.h:156
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
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
ff_metasound_lsp44
const float ff_metasound_lsp44[]
Definition: metasound_twinvq_data.h:606
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:175
av_channel_layout_default
void av_channel_layout_default(AVChannelLayout *ch_layout, int nb_channels)
Get the default channel layout for a given number of channels.
Definition: channel_layout.c:962
TWINVQ_SUB_GAIN_BITS
#define TWINVQ_SUB_GAIN_BITS
Definition: twinvq.h:52
twinvq_data::shape16
int16_t shape16[1920]
Definition: twinvq_data.h:172
bark_tab_m11_256
static const uint16_t bark_tab_m11_256[]
Definition: metasound_data.h:13728
bark_tab_m08_256
static const uint16_t bark_tab_m08_256[]
Definition: twinvq_data.h:80
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
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:170
AVCodecContext::extradata
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:499
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:149
twinvq_data::cb1110l0
int16_t cb1110l0[1280]
Definition: twinvq_data.h:162
TwinVQFrameData
Definition: twinvq.h:86
bark_tab_s11_64
static const uint16_t bark_tab_s11_64[]
Definition: metasound_data.h:13724
AVSampleFormat
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:55
twinvq_data::cb4448l0
int16_t cb4448l0[896]
Definition: twinvq_data.h:225
ff_twinvq_decoder
const FFCodec ff_twinvq_decoder
Definition: twinvqdec.c:416
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:211
mode_22_32
static const TwinVQModeTab mode_22_32
Definition: twinvqdec.c:86
len
int len
Definition: vorbis_enc_data.h:426
twinvq_data::cb2220m0
int16_t cb2220m0[1088]
Definition: twinvq_data.h:183
avcodec.h
ff_metasound_lsp22
const float ff_metasound_lsp22[]
Definition: metasound_twinvq_data.h:439
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:1052
bark_tab_l11_512
static const uint16_t bark_tab_l11_512[]
Definition: metasound_data.h:13718
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:398
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:68
mode_44_40
static const TwinVQModeTab mode_44_40
Definition: twinvqdec.c:95
twinvq_data::cb0808m1
int16_t cb0808m1[1024]
Definition: twinvq_data.h:148
twinvq_data::cb2224l1
int16_t cb2224l1[960]
Definition: twinvq_data.h:194
av_channel_layout_uninit
void av_channel_layout_uninit(AVChannelLayout *channel_layout)
Free any allocated data in the channel layout and reset the channel count to 0.
Definition: channel_layout.c:632
bark_tab_l44_2048
static const uint16_t bark_tab_l44_2048[]
Definition: metasound_data.h:13808
twinvq_data::cb4448m0
int16_t cb4448m0[896]
Definition: twinvq_data.h:227
ff_metasound_lsp16
const float ff_metasound_lsp16[]
Definition: metasound_twinvq_data.h:260
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:210
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:425
TwinVQFrameData::window_type
int window_type
Definition: twinvq.h:87
twinvq_data::cb2232m1
int16_t cb2232m1[704]
Definition: twinvq_data.h:209
twinvq_data::cb2220s0
int16_t cb2220s0[1152]
Definition: twinvq_data.h:185
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
TwinVQContext
Definition: twinvq.h:137
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
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:238
bark_tab_s22_128
#define bark_tab_s22_128
Definition: metasound_data.h:13820
bark_tab_l16_1024
static const uint16_t bark_tab_l16_1024[]
Definition: metasound_data.h:13751
twinvq_data::shape44
int16_t shape44[1152]
Definition: twinvq_data.h:223
AV_CODEC_ID_TWINVQ
@ AV_CODEC_ID_TWINVQ
Definition: codec_id.h:478
bark_tab_s16_128
static const uint16_t bark_tab_s16_128[]
Definition: metasound_data.h:13761
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:473
bark_tab_s08_64
static const uint16_t bark_tab_s08_64[]
Definition: twinvq_data.h:110
bark_tab_l22_1024
static const uint16_t bark_tab_l22_1024[]
Definition: metasound_data.h:13783
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
bark_tab_m44_512
static const uint16_t bark_tab_m44_512[]
Definition: metasound_data.h:13815