FFmpeg  2.1.1
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 
25 #include "libavutil/channel_layout.h"
26 #include "avcodec.h"
27 #include "get_bits.h"
28 #include "internal.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, tab.lsp08, 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, tab.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, tab.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, tab.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, tab.lsp22_1, 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, tab.lsp22_1, 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, tab.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, tab.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 divised 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->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;
255  const TwinVQModeTab *mtab = tctx->mtab;
256  int channels = tctx->avctx->channels;
257  int sub;
258  GetBitContext gb;
259  int i, j, k;
260 
261  init_get_bits(&gb, buf, buf_size * 8);
262  skip_bits(&gb, get_bits(&gb, 8));
263 
265 
266  if (bits->window_type > 8) {
267  av_log(avctx, AV_LOG_ERROR, "Invalid window type, broken sample?\n");
268  return AVERROR_INVALIDDATA;
269  }
270 
272 
273  sub = mtab->fmode[bits->ftype].sub;
274 
275  read_cb_data(tctx, &gb, bits->main_coeffs, bits->ftype);
276 
277  for (i = 0; i < channels; i++)
278  for (j = 0; j < sub; j++)
279  for (k = 0; k < mtab->fmode[bits->ftype].bark_n_coef; k++)
280  bits->bark1[i][j][k] =
281  get_bits(&gb, mtab->fmode[bits->ftype].bark_n_bit);
282 
283  for (i = 0; i < channels; i++)
284  for (j = 0; j < sub; j++)
285  bits->bark_use_hist[i][j] = get_bits1(&gb);
286 
287  if (bits->ftype == TWINVQ_FT_LONG) {
288  for (i = 0; i < channels; i++)
289  bits->gain_bits[i] = get_bits(&gb, TWINVQ_GAIN_BITS);
290  } else {
291  for (i = 0; i < channels; i++) {
292  bits->gain_bits[i] = get_bits(&gb, TWINVQ_GAIN_BITS);
293  for (j = 0; j < sub; j++)
294  bits->sub_gain_bits[i * sub + j] = get_bits(&gb,
296  }
297  }
298 
299  for (i = 0; i < channels; i++) {
300  bits->lpc_hist_idx[i] = get_bits(&gb, mtab->lsp_bit0);
301  bits->lpc_idx1[i] = get_bits(&gb, mtab->lsp_bit1);
302 
303  for (j = 0; j < mtab->lsp_split; j++)
304  bits->lpc_idx2[i][j] = get_bits(&gb, mtab->lsp_bit2);
305  }
306 
307  if (bits->ftype == TWINVQ_FT_LONG) {
308  read_cb_data(tctx, &gb, bits->ppc_coeffs, 3);
309  for (i = 0; i < channels; i++) {
310  bits->p_coef[i] = get_bits(&gb, mtab->ppc_period_bit);
311  bits->g_coef[i] = get_bits(&gb, mtab->pgain_bit);
312  }
313  }
314 
315  return (get_bits_count(&gb) + 7) / 8;
316 }
317 
319 {
320  int isampf, ibps;
321  TwinVQContext *tctx = avctx->priv_data;
322 
323  if (!avctx->extradata || avctx->extradata_size < 12) {
324  av_log(avctx, AV_LOG_ERROR, "Missing or incomplete extradata\n");
325  return AVERROR_INVALIDDATA;
326  }
327  avctx->channels = AV_RB32(avctx->extradata) + 1;
328  avctx->bit_rate = AV_RB32(avctx->extradata + 4) * 1000;
329  isampf = AV_RB32(avctx->extradata + 8);
330 
331  if (isampf < 8 || isampf > 44) {
332  av_log(avctx, AV_LOG_ERROR, "Unsupported sample rate\n");
333  return AVERROR_INVALIDDATA;
334  }
335  switch (isampf) {
336  case 44:
337  avctx->sample_rate = 44100;
338  break;
339  case 22:
340  avctx->sample_rate = 22050;
341  break;
342  case 11:
343  avctx->sample_rate = 11025;
344  break;
345  default:
346  avctx->sample_rate = isampf * 1000;
347  break;
348  }
349 
350  if (avctx->channels <= 0 || avctx->channels > TWINVQ_CHANNELS_MAX) {
351  av_log(avctx, AV_LOG_ERROR, "Unsupported number of channels: %i\n",
352  avctx->channels);
353  return -1;
354  }
355  avctx->channel_layout = avctx->channels == 1 ? AV_CH_LAYOUT_MONO
357 
358  ibps = avctx->bit_rate / (1000 * avctx->channels);
359  if (ibps < 8 || ibps > 48) {
360  av_log(avctx, AV_LOG_ERROR, "Bad bitrate per channel value %d\n", ibps);
361  return AVERROR_INVALIDDATA;
362  }
363 
364  switch ((isampf << 8) + ibps) {
365  case (8 << 8) + 8:
366  tctx->mtab = &mode_08_08;
367  break;
368  case (11 << 8) + 8:
369  tctx->mtab = &mode_11_08;
370  break;
371  case (11 << 8) + 10:
372  tctx->mtab = &mode_11_10;
373  break;
374  case (16 << 8) + 16:
375  tctx->mtab = &mode_16_16;
376  break;
377  case (22 << 8) + 20:
378  tctx->mtab = &mode_22_20;
379  break;
380  case (22 << 8) + 24:
381  tctx->mtab = &mode_22_24;
382  break;
383  case (22 << 8) + 32:
384  tctx->mtab = &mode_22_32;
385  break;
386  case (44 << 8) + 40:
387  tctx->mtab = &mode_44_40;
388  break;
389  case (44 << 8) + 48:
390  tctx->mtab = &mode_44_48;
391  break;
392  default:
393  av_log(avctx, AV_LOG_ERROR,
394  "This version does not support %d kHz - %d kbit/s/ch mode.\n",
395  isampf, isampf);
396  return -1;
397  }
398 
399  avctx->block_align = (avctx->bit_rate * tctx->mtab->size
400  / avctx->sample_rate + 15) / 8;
401 
402  tctx->codec = TWINVQ_CODEC_VQF;
404  tctx->dec_bark_env = dec_bark_env;
405  tctx->decode_ppc = decode_ppc;
406 
407  return ff_twinvq_decode_init(avctx);
408 }
409 
411  .name = "twinvq",
412  .long_name = NULL_IF_CONFIG_SMALL("VQF TwinVQ"),
413  .type = AVMEDIA_TYPE_AUDIO,
414  .id = AV_CODEC_ID_TWINVQ,
415  .priv_data_size = sizeof(TwinVQContext),
419  .capabilities = CODEC_CAP_DR1,
420  .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
422 };
#define TWINVQ_PGAIN_MU
Definition: twinvq.h:54
static const TwinVQModeTab mode_44_48
Definition: twinvqdec.c:104
const char const char void * val
Definition: avisynth_c.h:671
int16_t cb1108l1[1728]
Definition: twinvq_data.h:152
uint8_t bark_n_bit
number of bits of the BSE coefs
Definition: twinvq.h:73
int size
static const uint16_t bark_tab_l44_2048[]
int16_t cb1110s1[1344]
Definition: twinvq_data.h:169
int window_type
Definition: twinvq.h:85
uint8_t ppc_coeffs[TWINVQ_PPC_SHAPE_LEN_MAX]
Definition: twinvq.h:89
int bits_main_spec_change[4]
Definition: twinvq.h:151
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:255
const TwinVQModeTab * mtab
Definition: twinvq.h:140
int p_coef[TWINVQ_CHANNELS_MAX]
Definition: twinvq.h:101
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
uint8_t bark_n_coef
number of BSE CB coefficients to read
Definition: twinvq.h:72
int16_t cb2232m0[704]
Definition: twinvq_data.h:212
int16_t cb1108m1[1536]
Definition: twinvq_data.h:154
int16_t cb2232l0[768]
Definition: twinvq_data.h:210
const char * b
Definition: vf_curves.c:105
int16_t fcb44l[640]
Definition: twinvq_data.h:224
int16_t cb1110l1[1280]
Definition: twinvq_data.h:165
static const TwinVQModeTab mode_22_20
Definition: twinvqdec.c:68
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
static const uint16_t bark_tab_m08_256[]
Definition: twinvq_data.h:80
uint16_t size
frame size in samples
Definition: twinvq.h:112
static struct @76 tabs[]
uint8_t lsp_bit0
Definition: twinvq.h:117
#define AV_CH_LAYOUT_STEREO
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
uint8_t bark_use_hist[TWINVQ_CHANNELS_MAX][TWINVQ_SUBBLOCKS_MAX]
Definition: twinvq.h:95
static const uint16_t bark_tab_m16_512[]
AVCodec.
Definition: avcodec.h:2922
#define av_cold
Definition: avcodec.h:653
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
Definition: avcodec.h:1910
uint8_t lpc_idx1[TWINVQ_CHANNELS_MAX]
Definition: twinvq.h:97
int16_t cb1616l0[1024]
Definition: twinvq_data.h:177
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1254
enum TwinVQFrameType ff_twinvq_wtype_to_ftype_table[]
Definition: twinvq.c:467
uint8_t sub_gain_bits[TWINVQ_CHANNELS_MAX *TWINVQ_SUBBLOCKS_MAX]
Definition: twinvq.h:92
int16_t cb1110s0[1344]
Definition: twinvq_data.h:168
static av_cold int twinvq_decode_init(AVCodecContext *avctx)
Definition: twinvqdec.c:318
int16_t cb2224s0[960]
Definition: twinvq_data.h:201
int16_t cb2232s1[704]
Definition: twinvq_data.h:215
int16_t fcb22l_2[512]
Definition: twinvq_data.h:204
int16_t cb4440s1[1152]
Definition: twinvq_data.h:222
int16_t cb4448l1[896]
Definition: twinvq_data.h:231
uint8_t lpc_idx2[TWINVQ_CHANNELS_MAX][TWINVQ_LSP_SPLIT_MAX]
Definition: twinvq.h:98
int16_t fcb11l[640]
Definition: twinvq_data.h:158
uint8_t bits
Definition: crc.c:260
static const TwinVQModeTab mode_22_32
Definition: twinvqdec.c:86
uint8_t
static const uint16_t bark_tab_s11_64[]
Definition: twinvq_data.h:114
int16_t cb2232m1[704]
Definition: twinvq_data.h:213
int16_t cb4440m1[1088]
Definition: twinvq_data.h:220
int g_coef[TWINVQ_CHANNELS_MAX]
Definition: twinvq.h:102
uint8_t ppc_period_bit
number of the bits for the PPC period value
Definition: twinvq.h:125
av_cold int ff_twinvq_decode_close(AVCodecContext *avctx)
Definition: twinvq.c:739
int16_t cb2220m1[1088]
Definition: twinvq_data.h:187
uint8_t gain_bits[TWINVQ_CHANNELS_MAX]
Definition: twinvq.h:91
static const uint16_t bark_tab_s22_128[]
Definition: twinvq_data.h:122
static const uint16_t bark_tab_l11_512[]
Definition: twinvq_data.h:47
const char * name
Name of the codec implementation.
Definition: avcodec.h:2929
int16_t fcb44m[640]
Definition: twinvq_data.h:225
int16_t cb4448m0[896]
Definition: twinvq_data.h:232
int16_t cb1108l0[1728]
Definition: twinvq_data.h:151
#define TWINVQ_GAIN_BITS
Definition: twinvq.h:50
TwinVQFrameType
Definition: twinvq.h:39
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:742
static void decode_ppc(TwinVQContext *tctx, int period_coef, int g_coef, const float *shape, float *speech)
Definition: twinvqdec.c:178
static const uint16_t bark_tab_l22_1024[]
Definition: twinvq_data.h:59
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:207
#define TWINVQ_WINDOW_TYPE_BITS
Definition: twinvq.h:53
int16_t cb0808l0[1088]
Definition: twinvq_data.h:144
Parameters and tables that are different for every combination of bitrate/sample rate.
Definition: twinvq.h:109
uint8_t lpc_hist_idx[TWINVQ_CHANNELS_MAX]
Definition: twinvq.h:99
static const TwinVQModeTab mode_44_40
Definition: twinvqdec.c:95
bitstream reader API header.
int16_t cb1616s0[1024]
Definition: twinvq_data.h:181
static const uint16_t bark_tab_s08_64[]
Definition: twinvq_data.h:110
static const uint16_t bark_tab_m44_512[]
Long frame (single sub-block + PPC)
Definition: twinvq.h:42
int16_t fcb22m_1[640]
Definition: twinvq_data.h:192
int16_t cb2220l1[1152]
Definition: twinvq_data.h:185
int16_t cb2224l0[960]
Definition: twinvq_data.h:197
uint8_t bark_env_size
number of distinct bark scale envelope values
Definition: twinvq.h:69
static float twinvq_mulawinv(float y, float clip, float mu)
Definition: twinvq.h:187
int16_t shape11[1280]
Definition: twinvq_data.h:161
int16_t shape22_2[1152]
Definition: twinvq_data.h:207
static const TwinVQModeTab mode_16_16
Definition: twinvqdec.c:59
int16_t fcb08m[320]
Definition: twinvq_data.h:140
uint8_t main_coeffs[1024]
Definition: twinvq.h:88
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: avcodec.h:4147
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=av_sample_fmt_is_planar(in_fmt);out_planar=av_sample_fmt_is_planar(out_fmt);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);ff_audio_convert_init_arm(ac);ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_dlog(ac->avr,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
int16_t fcb16m[320]
Definition: twinvq_data.h:172
static const TwinVQModeTab mode_08_08
Definition: twinvqdec.c:32
int16_t cb0808m1[1024]
Definition: twinvq_data.h:149
static const uint16_t bark_tab_m11_256[]
Definition: twinvq_data.h:85
AVCodec ff_twinvq_decoder
Definition: twinvqdec.c:410
int16_t cb2220s0[1152]
Definition: twinvq_data.h:188
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:151
int16_t cb4440l0[1088]
Definition: twinvq_data.h:217
int16_t cb2232l1[768]
Definition: twinvq_data.h:211
static const uint16_t bark_tab_m22_256[]
Definition: twinvq_data.h:95
static const uint16_t bark_tab_m22_512[]
Definition: twinvq_data.h:100
int16_t cb2224s1[960]
Definition: twinvq_data.h:202
int16_t cb2220m0[1088]
Definition: twinvq_data.h:186
int16_t fcb22s_1[640]
Definition: twinvq_data.h:193
int16_t cb1616l1[1024]
Definition: twinvq_data.h:178
int(* read_bitstream)(AVCodecContext *avctx, struct TwinVQContext *tctx, const uint8_t *buf, int buf_size)
Definition: twinvq.h:169
int16_t cb2224m0[896]
Definition: twinvq_data.h:199
int16_t cb2220l0[1152]
Definition: twinvq_data.h:184
static void read_cb_data(TwinVQContext *tctx, GetBitContext *gb, uint8_t *dst, enum TwinVQFrameType ftype)
Definition: twinvqdec.c:238
int16_t fcb08l[640]
Definition: twinvq_data.h:139
static const uint16_t bark_tab_l22_512[]
Definition: twinvq_data.h:66
Libavcodec external API header.
int16_t cb4448s0[960]
Definition: twinvq_data.h:234
int16_t fcb16l[640]
Definition: twinvq_data.h:171
int16_t cb1110l0[1280]
Definition: twinvq_data.h:164
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:1934
void(* decode_ppc)(struct TwinVQContext *tctx, int period_coef, int g_coef, const float *shape, float *speech)
Definition: twinvq.h:174
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:171
int16_t cb1616m0[960]
Definition: twinvq_data.h:179
int bit_rate
the average bitrate
Definition: avcodec.h:1204
uint8_t sub
Number subblocks in each frame.
Definition: twinvq.h:65
uint16_t peak_per2wid
constant for peak period to peak width conversion
Definition: twinvq.h:132
static int twinvq_read_bitstream(AVCodecContext *avctx, TwinVQContext *tctx, const uint8_t *buf, int buf_size)
Definition: twinvqdec.c:251
int16_t shape22_1[1152]
Definition: twinvq_data.h:194
uint8_t bits_main_spec[2][4][2]
bits for the main codebook
Definition: twinvq.h:150
static const TwinVQModeTab mode_11_08
Definition: twinvqdec.c:41
static void twinvq_memset_float(float *buf, float val, int size)
Definition: twinvq.h:181
TwinVQFrameData bits
Definition: twinvq.h:165
int ff_twinvq_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
Definition: twinvq.c:473
int16_t cb1110m0[1152]
Definition: twinvq_data.h:166
int n_div[4]
Definition: twinvq.h:152
AVSampleFormat
Audio Sample Formats.
Definition: samplefmt.h:49
float lsp22_1[1312]
Definition: twinvq_data.h:195
int16_t cb2224l1[960]
Definition: twinvq_data.h:198
int16_t fcb22m_2[640]
Definition: twinvq_data.h:205
int16_t fcb44s[640]
Definition: twinvq_data.h:226
static int width
Definition: utils.c:158
float bark_hist[3][2][40]
BSE coefficients of last frame.
Definition: twinvq.h:144
float lsp44[1640]
Definition: twinvq_data.h:228
int sample_rate
samples per second
Definition: avcodec.h:1873
int16_t cb0808l1[1088]
Definition: twinvq_data.h:145
main external API structure.
Definition: avcodec.h:1146
static void close(AVCodecParserContext *s)
Definition: h264_parser.c:538
int16_t fcb22l_1[512]
Definition: twinvq_data.h:191
int16_t shape08[1280]
Definition: twinvq_data.h:142
const uint16_t * bark_tab
Definition: twinvq.h:66
static const TwinVQModeTab mode_11_10
Definition: twinvqdec.c:50
enum TwinVQFrameType ftype
Definition: twinvq.h:86
int16_t fcb16s[320]
Definition: twinvq_data.h:173
int16_t cb1616s1[1024]
Definition: twinvq_data.h:182
const int16_t * bark_cb
codebook for the bark scale envelope (BSE)
Definition: twinvq.h:71
void * buf
Definition: avisynth_c.h:594
int extradata_size
Definition: avcodec.h:1255
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:299
float lsp16[1400]
Definition: twinvq_data.h:175
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:292
struct TwinVQFrameMode fmode[3]
frame type-dependant parameters
Definition: twinvq.h:110
float lsp11[1312]
Definition: twinvq_data.h:162
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:405
int16_t cb4440s0[1152]
Definition: twinvq_data.h:221
uint8_t pgain_bit
bits for PPC gain
Definition: twinvq.h:129
int16_t cb2220s1[1152]
Definition: twinvq_data.h:189
float lsp22_2[1312]
Definition: twinvq_data.h:208
#define ROUNDED_DIV(a, b)
Definition: avcodec.h:914
int16_t shape44[1152]
Definition: twinvq_data.h:227
void * priv_data
Definition: avcodec.h:1182
static const TwinVQModeTab mode_22_24
Definition: twinvqdec.c:77
int16_t cb0808s1[1152]
Definition: twinvq_data.h:147
int16_t cb1616m1[960]
Definition: twinvq_data.h:180
uint8_t lsp_bit1
Definition: twinvq.h:118
enum TwinVQCodec codec
Definition: twinvq.h:167
int16_t cb0808m0[1024]
Definition: twinvq_data.h:148
int16_t cb4448m1[896]
Definition: twinvq_data.h:233
common internal api header.
int16_t cb1108s1[1856]
Definition: twinvq_data.h:156
static const uint16_t bark_tab_s16_128[]
int16_t fcb11m[320]
Definition: twinvq_data.h:159
static const uint16_t bark_tab_l16_1024[]
int16_t cb1110m1[1152]
Definition: twinvq_data.h:167
uint8_t ppc_shape_len
size of PPC shape CB
Definition: twinvq.h:128
int16_t shape16[1920]
Definition: twinvq_data.h:174
int16_t fcb22s_2[640]
Definition: twinvq_data.h:206
#define TWINVQ_SUB_GAIN_BITS
Definition: twinvq.h:52
int16_t cb1108m0[1536]
Definition: twinvq_data.h:153
int16_t cb4440m0[1088]
Definition: twinvq_data.h:219
int16_t cb2224m1[896]
Definition: twinvq_data.h:200
#define AV_RB32(x)
Definition: intreadwrite.h:258
#define AVERROR_INVALIDDATA
int len
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=av_sample_fmt_is_planar(in_fmt);out_planar=av_sample_fmt_is_planar(out_fmt);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);ff_audio_convert_init_arm(ac);ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_dlog(ac->avr,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> out
int16_t cb4440l1[1088]
Definition: twinvq_data.h:218
int channels
number of audio channels
Definition: avcodec.h:1874
#define av_log2
Definition: intmath.h:89
int16_t cb4448s1[960]
Definition: twinvq_data.h:235
float, planar
Definition: samplefmt.h:60
static struct twinvq_data tab
int16_t fcb11s[320]
Definition: twinvq_data.h:160
int16_t cb4448l0[896]
Definition: twinvq_data.h:230
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:700
static const uint16_t bark_tab_l08_512[]
Definition: twinvq_data.h:41
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
static int decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: crystalhd.c:868
int16_t cb0808s0[1152]
Definition: twinvq_data.h:146
int16_t cb1108s0[1856]
Definition: twinvq_data.h:155
int16_t cb2232s0[704]
Definition: twinvq_data.h:214
#define TWINVQ_CHANNELS_MAX
Definition: twinvq.h:57
#define AV_CH_LAYOUT_MONO
static const uint16_t bark_tab_s44_128[]
AVCodecContext * avctx
Definition: twinvq.h:136
static int very_broken_op(int a, int b)
Evaluate a * b / 400 rounded to the nearest integer.
Definition: twinvqdec.c:133
uint8_t lsp_bit2
Definition: twinvq.h:119
uint8_t lsp_split
number of CB entries for the LSP decoding
Definition: twinvq.h:121
int16_t fcb08s[320]
Definition: twinvq_data.h:141
uint8_t bark1[TWINVQ_CHANNELS_MAX][TWINVQ_SUBBLOCKS_MAX][TWINVQ_BARK_N_COEF_MAX]
Definition: twinvq.h:94
av_cold int ff_twinvq_decode_init(AVCodecContext *avctx)
Definition: twinvq.c:757
float lsp08[504]
Definition: twinvq_data.h:138