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metasound.c
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1 /*
2  * Voxware MetaSound decoder
3  * Copyright (c) 2013 Konstantin Shishkov
4  * based on TwinVQ decoder
5  * Copyright (c) 2009 Vitor Sessak
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 #include <inttypes.h>
25 #include <math.h>
26 #include <stdint.h>
27 
29 #include "libavutil/float_dsp.h"
30 
31 #define BITSTREAM_READER_LE
32 #include "avcodec.h"
33 #include "fft.h"
34 #include "get_bits.h"
35 #include "internal.h"
36 #include "lsp.h"
37 #include "sinewin.h"
38 
39 #include "twinvq.h"
40 #include "metasound_data.h"
41 
42 static void add_peak(float period, int width, const float *shape,
43  float ppc_gain, float *speech, int len)
44 {
45  int i, j, center;
46  const float *shape_end = shape + len;
47 
48  // First peak centered around zero
49  for (i = 0; i < width / 2; i++)
50  speech[i] += ppc_gain * *shape++;
51 
52  for (i = 1; i < ROUNDED_DIV(len, width); i++) {
53  center = (int)(i * period + 0.5);
54  for (j = -width / 2; j < (width + 1) / 2; j++)
55  speech[j + center] += ppc_gain * *shape++;
56  }
57 
58  // For the last block, be careful not to go beyond the end of the buffer
59  center = (int)(i * period + 0.5);
60  for (j = -width / 2; j < (width + 1) / 2 && shape < shape_end; j++)
61  speech[j + center] += ppc_gain * *shape++;
62 }
63 
64 static void decode_ppc(TwinVQContext *tctx, int period_coef, int g_coef,
65  const float *shape, float *speech)
66 {
67  const TwinVQModeTab *mtab = tctx->mtab;
68  int isampf = tctx->avctx->sample_rate / 1000;
69  int ibps = tctx->avctx->bit_rate / (1000 * tctx->avctx->channels);
70  int width;
71 
72  float ratio = (float)mtab->size / isampf;
73  float min_period, max_period, period_range, period;
74  float some_mult;
75 
76  float pgain_base, pgain_step, ppc_gain;
77 
78  if (tctx->avctx->channels == 1) {
79  min_period = log2(ratio * 0.2);
80  max_period = min_period + log2(6);
81  } else {
82  min_period = (int)(ratio * 0.2 * 400 + 0.5) / 400.0;
83  max_period = (int)(ratio * 0.2 * 400 * 6 + 0.5) / 400.0;
84  }
85  period_range = max_period - min_period;
86  period = min_period + period_coef * period_range /
87  ((1 << mtab->ppc_period_bit) - 1);
88  if (tctx->avctx->channels == 1)
89  period = powf(2.0, period);
90  else
91  period = (int)(period * 400 + 0.5) / 400.0;
92 
93  switch (isampf) {
94  case 8: some_mult = 2.0; break;
95  case 11: some_mult = 3.0; break;
96  case 16: some_mult = 3.0; break;
97  case 22: some_mult = ibps == 32 ? 2.0 : 4.0; break;
98  case 44: some_mult = 8.0; break;
99  default: some_mult = 4.0;
100  }
101 
102  width = (int)(some_mult / (mtab->size / period) * mtab->ppc_shape_len);
103  if (isampf == 22 && ibps == 32)
104  width = (int)((2.0 / period + 1) * width + 0.5);
105 
106  pgain_base = tctx->avctx->channels == 2 ? 25000.0 : 20000.0;
107  pgain_step = pgain_base / ((1 << mtab->pgain_bit) - 1);
108  ppc_gain = 1.0 / 8192 *
109  twinvq_mulawinv(pgain_step * g_coef + pgain_step / 2,
110  pgain_base, TWINVQ_PGAIN_MU);
111 
112  add_peak(period, width, shape, ppc_gain, speech, mtab->ppc_shape_len);
113 }
114 
115 static void dec_bark_env(TwinVQContext *tctx, const uint8_t *in, int use_hist,
116  int ch, float *out, float gain,
117  enum TwinVQFrameType ftype)
118 {
119  const TwinVQModeTab *mtab = tctx->mtab;
120  int i, j;
121  float *hist = tctx->bark_hist[ftype][ch];
122  float val = ((const float []) { 0.4, 0.35, 0.28 })[ftype];
123  int bark_n_coef = mtab->fmode[ftype].bark_n_coef;
124  int fw_cb_len = mtab->fmode[ftype].bark_env_size / bark_n_coef;
125  int idx = 0;
126 
127  if (tctx->avctx->channels == 1)
128  val = 0.5;
129  for (i = 0; i < fw_cb_len; i++)
130  for (j = 0; j < bark_n_coef; j++, idx++) {
131  float tmp2 = mtab->fmode[ftype].bark_cb[fw_cb_len * in[j] + i] *
132  (1.0 / 2048);
133  float st;
134 
135  if (tctx->avctx->channels == 1)
136  st = use_hist ?
137  tmp2 + val * hist[idx] + 1.0 : tmp2 + 1.0;
138  else
139  st = use_hist ? (1.0 - val) * tmp2 + val * hist[idx] + 1.0
140  : tmp2 + 1.0;
141 
142  hist[idx] = tmp2;
143  if (st < 0.1)
144  st = 0.1;
145 
146  twinvq_memset_float(out, st * gain,
147  mtab->fmode[ftype].bark_tab[idx]);
148  out += mtab->fmode[ftype].bark_tab[idx];
149  }
150 }
151 
152 static void read_cb_data(TwinVQContext *tctx, GetBitContext *gb,
153  uint8_t *dst, enum TwinVQFrameType ftype)
154 {
155  int i;
156 
157  for (i = 0; i < tctx->n_div[ftype]; i++) {
158  int bs_second_part = (i >= tctx->bits_main_spec_change[ftype]);
159 
160  *dst++ = get_bits(gb, tctx->bits_main_spec[0][ftype][bs_second_part]);
161  *dst++ = get_bits(gb, tctx->bits_main_spec[1][ftype][bs_second_part]);
162  }
163 }
164 
166  const uint8_t *buf, int buf_size)
167 {
168  TwinVQFrameData *bits;
169  const TwinVQModeTab *mtab = tctx->mtab;
170  int channels = tctx->avctx->channels;
171  int sub;
172  GetBitContext gb;
173  int i, j, k, ret;
174 
175  if ((ret = init_get_bits8(&gb, buf, buf_size)) < 0)
176  return ret;
177 
178  for (tctx->cur_frame = 0; tctx->cur_frame < tctx->frames_per_packet;
179  tctx->cur_frame++) {
180  bits = tctx->bits + tctx->cur_frame;
181 
183 
184  if (bits->window_type > 8) {
185  av_log(avctx, AV_LOG_ERROR, "Invalid window type, broken sample?\n");
186  return AVERROR_INVALIDDATA;
187  }
188 
190 
191  sub = mtab->fmode[bits->ftype].sub;
192 
193  if (bits->ftype != TWINVQ_FT_SHORT && !tctx->is_6kbps)
194  get_bits(&gb, 2);
195 
196  read_cb_data(tctx, &gb, bits->main_coeffs, bits->ftype);
197 
198  for (i = 0; i < channels; i++)
199  for (j = 0; j < sub; j++)
200  for (k = 0; k < mtab->fmode[bits->ftype].bark_n_coef; k++)
201  bits->bark1[i][j][k] =
202  get_bits(&gb, mtab->fmode[bits->ftype].bark_n_bit);
203 
204  for (i = 0; i < channels; i++)
205  for (j = 0; j < sub; j++)
206  bits->bark_use_hist[i][j] = get_bits1(&gb);
207 
208  if (bits->ftype == TWINVQ_FT_LONG) {
209  for (i = 0; i < channels; i++)
210  bits->gain_bits[i] = get_bits(&gb, TWINVQ_GAIN_BITS);
211  } else {
212  for (i = 0; i < channels; i++) {
213  bits->gain_bits[i] = get_bits(&gb, TWINVQ_GAIN_BITS);
214  for (j = 0; j < sub; j++)
215  bits->sub_gain_bits[i * sub + j] =
217  }
218  }
219 
220  for (i = 0; i < channels; i++) {
221  bits->lpc_hist_idx[i] = get_bits(&gb, mtab->lsp_bit0);
222  bits->lpc_idx1[i] = get_bits(&gb, mtab->lsp_bit1);
223 
224  for (j = 0; j < mtab->lsp_split; j++)
225  bits->lpc_idx2[i][j] = get_bits(&gb, mtab->lsp_bit2);
226  }
227 
228  if (bits->ftype == TWINVQ_FT_LONG) {
229  read_cb_data(tctx, &gb, bits->ppc_coeffs, 3);
230  for (i = 0; i < channels; i++) {
231  bits->p_coef[i] = get_bits(&gb, mtab->ppc_period_bit);
232  bits->g_coef[i] = get_bits(&gb, mtab->pgain_bit);
233  }
234  }
235 
236  // subframes are aligned to nibbles
237  if (get_bits_count(&gb) & 3)
238  skip_bits(&gb, 4 - (get_bits_count(&gb) & 3));
239  }
240 
241  return (get_bits_count(&gb) + 7) / 8;
242 }
243 
244 typedef struct MetasoundProps {
245  uint32_t tag;
246  int bit_rate;
247  int channels;
250 
251 static const MetasoundProps codec_props[] = {
252  { MKTAG('V','X','0','3'), 6, 1, 8000 },
253  { MKTAG('V','X','0','4'), 12, 2, 8000 },
254 
255  { MKTAG('V','O','X','i'), 8, 1, 8000 },
256  { MKTAG('V','O','X','j'), 10, 1, 11025 },
257  { MKTAG('V','O','X','k'), 16, 1, 16000 },
258  { MKTAG('V','O','X','L'), 24, 1, 22050 },
259  { MKTAG('V','O','X','q'), 32, 1, 44100 },
260  { MKTAG('V','O','X','r'), 40, 1, 44100 },
261  { MKTAG('V','O','X','s'), 48, 1, 44100 },
262  { MKTAG('V','O','X','t'), 16, 2, 8000 },
263  { MKTAG('V','O','X','u'), 20, 2, 11025 },
264  { MKTAG('V','O','X','v'), 32, 2, 16000 },
265  { MKTAG('V','O','X','w'), 48, 2, 22050 },
266  { MKTAG('V','O','X','x'), 64, 2, 44100 },
267  { MKTAG('V','O','X','y'), 80, 2, 44100 },
268  { MKTAG('V','O','X','z'), 96, 2, 44100 },
269 
270  { 0, 0, 0, 0 }
271 };
272 
274 {
275  int isampf, ibps;
276  TwinVQContext *tctx = avctx->priv_data;
277  uint32_t tag;
278  const MetasoundProps *props = codec_props;
279 
280  if (!avctx->extradata || avctx->extradata_size < 16) {
281  av_log(avctx, AV_LOG_ERROR, "Missing or incomplete extradata\n");
282  return AVERROR_INVALIDDATA;
283  }
284 
285  tag = AV_RL32(avctx->extradata + 12);
286 
287  for (;;) {
288  if (!props->tag) {
289  av_log(avctx, AV_LOG_ERROR, "Could not find tag %08"PRIX32"\n", tag);
290  return AVERROR_INVALIDDATA;
291  }
292  if (props->tag == tag) {
293  avctx->sample_rate = props->sample_rate;
294  avctx->channels = props->channels;
295  avctx->bit_rate = props->bit_rate * 1000;
296  isampf = avctx->sample_rate / 1000;
297  break;
298  }
299  props++;
300  }
301 
302  if (avctx->channels <= 0 || avctx->channels > TWINVQ_CHANNELS_MAX) {
303  av_log(avctx, AV_LOG_ERROR, "Unsupported number of channels: %i\n",
304  avctx->channels);
305  return AVERROR_INVALIDDATA;
306  }
307  avctx->channel_layout = avctx->channels == 1 ? AV_CH_LAYOUT_MONO
309 
310  ibps = avctx->bit_rate / (1000 * avctx->channels);
311 
312  switch ((avctx->channels << 16) + (isampf << 8) + ibps) {
313  case (1 << 16) + ( 8 << 8) + 6:
314  tctx->mtab = &ff_metasound_mode0806;
315  break;
316  case (2 << 16) + ( 8 << 8) + 6:
317  tctx->mtab = &ff_metasound_mode0806s;
318  break;
319  case (1 << 16) + ( 8 << 8) + 8:
320  tctx->mtab = &ff_metasound_mode0808;
321  break;
322  case (2 << 16) + ( 8 << 8) + 8:
323  tctx->mtab = &ff_metasound_mode0808s;
324  break;
325  case (1 << 16) + (11 << 8) + 10:
326  tctx->mtab = &ff_metasound_mode1110;
327  break;
328  case (2 << 16) + (11 << 8) + 10:
329  tctx->mtab = &ff_metasound_mode1110s;
330  break;
331  case (1 << 16) + (16 << 8) + 16:
332  tctx->mtab = &ff_metasound_mode1616;
333  break;
334  case (2 << 16) + (16 << 8) + 16:
335  tctx->mtab = &ff_metasound_mode1616s;
336  break;
337  case (1 << 16) + (22 << 8) + 24:
338  tctx->mtab = &ff_metasound_mode2224;
339  break;
340  case (2 << 16) + (22 << 8) + 24:
341  tctx->mtab = &ff_metasound_mode2224s;
342  break;
343  case (1 << 16) + (44 << 8) + 32:
344  tctx->mtab = &ff_metasound_mode4432;
345  break;
346  case (2 << 16) + (44 << 8) + 32:
347  tctx->mtab = &ff_metasound_mode4432s;
348  break;
349  case (1 << 16) + (44 << 8) + 40:
350  tctx->mtab = &ff_metasound_mode4440;
351  break;
352  case (2 << 16) + (44 << 8) + 40:
353  tctx->mtab = &ff_metasound_mode4440s;
354  break;
355  case (1 << 16) + (44 << 8) + 48:
356  tctx->mtab = &ff_metasound_mode4448;
357  break;
358  case (2 << 16) + (44 << 8) + 48:
359  tctx->mtab = &ff_metasound_mode4448s;
360  break;
361  default:
362  av_log(avctx, AV_LOG_ERROR,
363  "This version does not support %d kHz - %d kbit/s/ch mode.\n",
364  isampf, ibps);
365  return AVERROR(ENOSYS);
366  }
367 
370  tctx->dec_bark_env = dec_bark_env;
371  tctx->decode_ppc = decode_ppc;
372  tctx->frame_size = avctx->bit_rate * tctx->mtab->size
373  / avctx->sample_rate;
374  tctx->is_6kbps = ibps == 6;
375 
376  return ff_twinvq_decode_init(avctx);
377 }
378 
380  .name = "metasound",
381  .long_name = NULL_IF_CONFIG_SMALL("Voxware MetaSound"),
382  .type = AVMEDIA_TYPE_AUDIO,
383  .id = AV_CODEC_ID_METASOUND,
384  .priv_data_size = sizeof(TwinVQContext),
386  .close = ff_twinvq_decode_close,
388  .capabilities = AV_CODEC_CAP_DR1,
389  .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
391 };
#define TWINVQ_PGAIN_MU
Definition: twinvq.h:54
float, planar
Definition: samplefmt.h:69
const char const char void * val
Definition: avisynth_c.h:771
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
uint8_t bark_n_bit
number of bits of the BSE coefs
Definition: twinvq.h:75
int window_type
Definition: twinvq.h:87
uint8_t ppc_coeffs[TWINVQ_PPC_SHAPE_LEN_MAX]
Definition: twinvq.h:91
int bits_main_spec_change[4]
Definition: twinvq.h:155
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:261
const TwinVQModeTab * mtab
Definition: twinvq.h:142
int64_t bit_rate
the average bitrate
Definition: avcodec.h:1538
TwinVQFrameData bits[TWINVQ_MAX_FRAMES_PER_PACKET]
Definition: twinvq.h:170
int p_coef[TWINVQ_CHANNELS_MAX]
Definition: twinvq.h:103
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:74
channels
Definition: aptx.c:30
static const MetasoundProps codec_props[]
Definition: metasound.c:251
uint16_t size
frame size in samples
Definition: twinvq.h:114
uint8_t lsp_bit0
Definition: twinvq.h:119
#define AV_CH_LAYOUT_STEREO
uint8_t bark_use_hist[TWINVQ_CHANNELS_MAX][TWINVQ_SUBBLOCKS_MAX]
Definition: twinvq.h:97
AVCodec.
Definition: avcodec.h:3351
uint8_t lpc_idx1[TWINVQ_CHANNELS_MAX]
Definition: twinvq.h:99
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
enum TwinVQFrameType ff_twinvq_wtype_to_ftype_table[]
Definition: twinvq.c:470
uint8_t sub_gain_bits[TWINVQ_CHANNELS_MAX *TWINVQ_SUBBLOCKS_MAX]
Definition: twinvq.h:94
const TwinVQModeTab ff_metasound_mode1110
#define log2(x)
Definition: libm.h:404
const TwinVQModeTab ff_metasound_mode0808s
Short frame (divided in n sub-blocks)
Definition: twinvq.h:40
static int metasound_read_bitstream(AVCodecContext *avctx, TwinVQContext *tctx, const uint8_t *buf, int buf_size)
Definition: metasound.c:165
uint8_t lpc_idx2[TWINVQ_CHANNELS_MAX][TWINVQ_LSP_SPLIT_MAX]
Definition: twinvq.h:100
uint8_t
#define av_cold
Definition: attributes.h:82
int g_coef[TWINVQ_CHANNELS_MAX]
Definition: twinvq.h:104
uint8_t ppc_period_bit
number of the bits for the PPC period value
Definition: twinvq.h:127
av_cold int ff_twinvq_decode_close(AVCodecContext *avctx)
Definition: twinvq.c:751
uint8_t gain_bits[TWINVQ_CHANNELS_MAX]
Definition: twinvq.h:93
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1588
#define TWINVQ_GAIN_BITS
Definition: twinvq.h:50
TwinVQFrameType
Definition: twinvq.h:39
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:199
#define TWINVQ_WINDOW_TYPE_BITS
Definition: twinvq.h:53
uint32_t tag
Definition: movenc.c:1448
Parameters and tables that are different for every combination of bitrate/sample rate.
Definition: twinvq.h:111
uint8_t lpc_hist_idx[TWINVQ_CHANNELS_MAX]
Definition: twinvq.h:101
bitstream reader API header.
int cur_frame
Definition: twinvq.h:169
Long frame (single sub-block + PPC)
Definition: twinvq.h:42
#define av_log(a,...)
uint8_t bark_env_size
number of distinct bark scale envelope values
Definition: twinvq.h:71
const TwinVQModeTab ff_metasound_mode0806
#define ROUNDED_DIV(a, b)
Definition: common.h:56
static float twinvq_mulawinv(float y, float clip, float mu)
Definition: twinvq.h:192
int frame_size
Definition: twinvq.h:169
static void decode_ppc(TwinVQContext *tctx, int period_coef, int g_coef, const float *shape, float *speech)
Definition: metasound.c:64
uint8_t main_coeffs[1024]
Definition: twinvq.h:90
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
const TwinVQModeTab ff_metasound_mode4432
const TwinVQModeTab ff_metasound_mode1616
uint16_t width
Definition: gdv.c:47
const char * name
Name of the codec implementation.
Definition: avcodec.h:3358
int(* read_bitstream)(AVCodecContext *avctx, struct TwinVQContext *tctx, const uint8_t *buf, int buf_size)
Definition: twinvq.h:174
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:2194
#define powf(x, y)
Definition: libm.h:50
void(* decode_ppc)(struct TwinVQContext *tctx, int period_coef, int g_coef, const float *shape, float *speech)
Definition: twinvq.h:179
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
const TwinVQModeTab ff_metasound_mode4440s
audio channel layout utility functions
uint8_t sub
Number subblocks in each frame.
Definition: twinvq.h:67
static void dec_bark_env(TwinVQContext *tctx, const uint8_t *in, int use_hist, int ch, float *out, float gain, enum TwinVQFrameType ftype)
Definition: metasound.c:115
const TwinVQModeTab ff_metasound_mode1616s
uint8_t bits_main_spec[2][4][2]
bits for the main codebook
Definition: twinvq.h:154
static void twinvq_memset_float(float *buf, float val, int size)
Definition: twinvq.h:186
const TwinVQModeTab ff_metasound_mode2224s
int ff_twinvq_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
Definition: twinvq.c:476
int is_6kbps
Definition: twinvq.h:144
const TwinVQModeTab ff_metasound_mode4448s
int n_div[4]
Definition: twinvq.h:156
Libavcodec external API header.
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
float bark_hist[3][2][40]
BSE coefficients of last frame.
Definition: twinvq.h:148
static void read_cb_data(TwinVQContext *tctx, GetBitContext *gb, uint8_t *dst, enum TwinVQFrameType ftype)
Definition: metasound.c:152
int sample_rate
samples per second
Definition: avcodec.h:2143
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:456
main external API structure.
Definition: avcodec.h:1488
const uint16_t * bark_tab
Definition: twinvq.h:68
enum TwinVQFrameType ftype
Definition: twinvq.h:88
int frames_per_packet
Definition: twinvq.h:169
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){if(!*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));if(!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=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);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);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) 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_log(ac->avr, AV_LOG_TRACE,"%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
const TwinVQModeTab ff_metasound_mode0808
const int16_t * bark_cb
codebook for the bark scale envelope (BSE)
Definition: twinvq.h:73
void * buf
Definition: avisynth_c.h:690
int extradata_size
Definition: avcodec.h:1589
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:313
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:306
struct TwinVQFrameMode fmode[3]
frame type-dependent parameters
Definition: twinvq.h:112
static void add_peak(float period, int width, const float *shape, float ppc_gain, float *speech, int len)
Definition: metasound.c:42
uint32_t tag
Definition: metasound.c:245
uint8_t pgain_bit
bits for PPC gain
Definition: twinvq.h:131
const TwinVQModeTab ff_metasound_mode1110s
uint8_t lsp_bit1
Definition: twinvq.h:120
enum TwinVQCodec codec
Definition: twinvq.h:172
int
common internal api header.
if(ret< 0)
Definition: vf_mcdeint.c:279
uint8_t ppc_shape_len
size of PPC shape CB
Definition: twinvq.h:130
#define TWINVQ_SUB_GAIN_BITS
Definition: twinvq.h:52
void * priv_data
Definition: avcodec.h:1515
int len
int channels
number of audio channels
Definition: avcodec.h:2144
const TwinVQModeTab ff_metasound_mode0806s
const TwinVQModeTab ff_metasound_mode4432s
const TwinVQModeTab ff_metasound_mode2224
const TwinVQModeTab ff_metasound_mode4448
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:701
FILE * out
Definition: movenc.c:54
static av_cold int metasound_decode_init(AVCodecContext *avctx)
Definition: metasound.c:273
const TwinVQModeTab ff_metasound_mode4440
#define TWINVQ_CHANNELS_MAX
Definition: twinvq.h:57
#define AV_CH_LAYOUT_MONO
#define MKTAG(a, b, c, d)
Definition: common.h:366
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
AVCodec ff_metasound_decoder
Definition: metasound.c:379
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:956
AVCodecContext * avctx
Definition: twinvq.h:138
uint8_t lsp_bit2
Definition: twinvq.h:121
uint8_t lsp_split
number of CB entries for the LSP decoding
Definition: twinvq.h:123
uint8_t bark1[TWINVQ_CHANNELS_MAX][TWINVQ_SUBBLOCKS_MAX][TWINVQ_BARK_N_COEF_MAX]
Definition: twinvq.h:96
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(constuint8_t *) pi-0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(constint16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(constint32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(constint64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(constfloat *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(constdouble *) pi *(INT64_C(1)<< 63)))#defineFMT_PAIR_FUNC(out, in) staticconv_func_type *constfmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64),};staticvoidcpy1(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, len);}staticvoidcpy2(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 2 *len);}staticvoidcpy4(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 4 *len);}staticvoidcpy8(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 8 *len);}AudioConvert *swri_audio_convert_alloc(enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, constint *ch_map, intflags){AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) returnNULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) returnNULL;if(channels==1){in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);}ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map){switch(av_get_bytes_per_sample(in_fmt)){case1:ctx->simd_f=cpy1;break;case2:ctx->simd_f=cpy2;break;case4:ctx->simd_f=cpy4;break;case8:ctx->simd_f=cpy8;break;}}if(HAVE_X86ASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);returnctx;}voidswri_audio_convert_free(AudioConvert **ctx){av_freep(ctx);}intswri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, intlen){intch;intoff=0;constintos=(out->planar?1:out->ch_count)*out->bps;unsignedmisaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask){intplanes=in->planar?in->ch_count:1;unsignedm=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;}if(ctx->out_simd_align_mask){intplanes=out->planar?out->ch_count:1;unsignedm=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;}if(ctx->simd_f &&!ctx->ch_map &&!misaligned){off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){if(out->planar==in->planar){intplanes=out->planar?out->ch_count:1;for(ch=0;ch< planes;ch++){ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
av_cold int ff_twinvq_decode_init(AVCodecContext *avctx)
Definition: twinvq.c:770