FFmpeg  4.3
hcadec.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include "libavutil/crc.h"
20 #include "libavutil/float_dsp.h"
21 #include "libavutil/intreadwrite.h"
22 #include "libavutil/tx.h"
23 
24 #include "avcodec.h"
25 #include "get_bits.h"
26 #include "internal.h"
27 #include "hca_data.h"
28 
29 typedef struct ChannelContext {
30  float base[128];
31  DECLARE_ALIGNED(32, float, imdct_in)[128];
32  DECLARE_ALIGNED(32, float, imdct_out)[128];
33  DECLARE_ALIGNED(32, float, imdct_prev)[128];
34  int8_t scale_factors[128];
35  uint8_t scale[128];
36  int8_t intensity[8];
37  int8_t *hfr_scale;
38  unsigned count;
39  int chan_type;
41 
42 typedef struct HCAContext {
44 
45  const AVCRC *crc_table;
46 
48 
49  uint8_t ath[128];
50 
51  int ath_type;
52  unsigned hfr_group_count;
59 
63 } HCAContext;
64 
65 static void ath_init1(uint8_t *ath, int sample_rate)
66 {
67  unsigned int index;
68  unsigned int acc = 0;
69 
70  for (int i = 0; i < 128; i++) {
71  acc += sample_rate;
72  index = acc >> 13;
73 
74  if (index >= 654) {
75  memset(ath+i, 0xFF, (128 - i));
76  break;
77  }
78 
79  ath[i] = ath_base_curve[index];
80  }
81 }
82 
83 static int ath_init(uint8_t *ath, int type, int sample_rate)
84 {
85  switch (type) {
86  case 0:
87  /* nothing to do */
88  break;
89  case 1:
90  ath_init1(ath, sample_rate);
91  break;
92  default:
93  return AVERROR_INVALIDDATA;
94  }
95 
96  return 0;
97 }
98 
99 static inline unsigned ceil2(unsigned a, unsigned b)
100 {
101  return (b > 0) ? (a / b + ((a % b) ? 1 : 0)) : 0;
102 }
103 
105 {
106  HCAContext *c = avctx->priv_data;
107  GetBitContext *gb = &c->gb;
108  int8_t r[16] = { 0 };
109  float scale = 1.f / 8.f;
110  unsigned b, chunk;
111  int version, ret;
112 
115 
116  if (avctx->channels <= 0 || avctx->channels > 16)
117  return AVERROR(EINVAL);
118 
119  ret = init_get_bits8(gb, avctx->extradata, avctx->extradata_size);
120  if (ret < 0)
121  return ret;
122  skip_bits_long(gb, 32);
123  version = get_bits(gb, 16);
124  skip_bits_long(gb, 16);
125 
126  c->ath_type = version >= 0x200 ? 0 : 1;
127 
128  if (get_bits_long(gb, 32) != MKBETAG('f', 'm', 't', 0))
129  return AVERROR_INVALIDDATA;
130  skip_bits_long(gb, 32);
131  skip_bits_long(gb, 32);
132  skip_bits_long(gb, 32);
133 
134  chunk = get_bits_long(gb, 32);
135  if (chunk == MKBETAG('c', 'o', 'm', 'p')) {
136  skip_bits_long(gb, 16);
137  skip_bits_long(gb, 8);
138  skip_bits_long(gb, 8);
139  c->track_count = get_bits(gb, 8);
140  c->channel_config = get_bits(gb, 8);
141  c->total_band_count = get_bits(gb, 8);
142  c->base_band_count = get_bits(gb, 8);
143  c->stereo_band_count = get_bits(gb, 8);
144  c->bands_per_hfr_group = get_bits(gb, 8);
145  } else if (chunk == MKBETAG('d', 'e', 'c', 0)) {
146  skip_bits_long(gb, 16);
147  skip_bits_long(gb, 8);
148  skip_bits_long(gb, 8);
149  c->total_band_count = get_bits(gb, 8) + 1;
150  c->base_band_count = get_bits(gb, 8) + 1;
151  c->track_count = get_bits(gb, 4);
152  c->channel_config = get_bits(gb, 4);
153  if (!get_bits(gb, 8))
156  c->bands_per_hfr_group = 0;
157  } else
158  return AVERROR_INVALIDDATA;
159 
160  while (get_bits_left(gb) >= 32) {
161  chunk = get_bits_long(gb, 32);
162  if (chunk == MKBETAG('v', 'b', 'r', 0)) {
163  skip_bits_long(gb, 16);
164  skip_bits_long(gb, 16);
165  } else if (chunk == MKBETAG('a', 't', 'h', 0)) {
166  c->ath_type = get_bits(gb, 16);
167  } else if (chunk == MKBETAG('r', 'v', 'a', 0)) {
168  skip_bits_long(gb, 32);
169  } else if (chunk == MKBETAG('c', 'o', 'm', 'm')) {
170  skip_bits_long(gb, get_bits(gb, 8) * 8);
171  } else if (chunk == MKBETAG('c', 'i', 'p', 'h')) {
172  skip_bits_long(gb, 16);
173  } else if (chunk == MKBETAG('l', 'o', 'o', 'p')) {
174  skip_bits_long(gb, 32);
175  skip_bits_long(gb, 32);
176  skip_bits_long(gb, 16);
177  skip_bits_long(gb, 16);
178  } else if (chunk == MKBETAG('p', 'a', 'd', 0)) {
179  break;
180  } else {
181  break;
182  }
183  }
184 
185  ret = ath_init(c->ath, c->ath_type, avctx->sample_rate);
186  if (ret < 0)
187  return ret;
188 
189  if (!c->track_count)
190  c->track_count = 1;
191 
192  b = avctx->channels / c->track_count;
193  if (c->stereo_band_count && b > 1) {
194  int8_t *x = r;
195 
196  for (int i = 0; i < c->track_count; i++, x+=b) {
197  switch (b) {
198  case 2:
199  case 3:
200  x[0] = 1;
201  x[1] = 2;
202  break;
203  case 4:
204  x[0]=1; x[1] = 2;
205  if (c->channel_config == 0) {
206  x[2]=1;
207  x[3]=2;
208  }
209  break;
210  case 5:
211  x[0]=1; x[1] = 2;
212  if (c->channel_config <= 2) {
213  x[3]=1;
214  x[4]=2;
215  }
216  break;
217  case 6:
218  case 7:
219  x[0] = 1; x[1] = 2; x[4] = 1; x[5] = 2;
220  break;
221  case 8:
222  x[0] = 1; x[1] = 2; x[4] = 1; x[5] = 2; x[6] = 1; x[7] = 2;
223  break;
224  }
225  }
226  }
227 
228  if (c->total_band_count < c->base_band_count)
229  return AVERROR_INVALIDDATA;
230 
233 
234  if (c->base_band_count + c->stereo_band_count + (unsigned long)c->hfr_group_count > 128ULL)
235  return AVERROR_INVALIDDATA;
236 
237  for (int i = 0; i < avctx->channels; i++) {
238  c->ch[i].chan_type = r[i];
239  c->ch[i].count = c->base_band_count + ((r[i] != 2) ? c->stereo_band_count : 0);
241  if (c->ch[i].count > 128)
242  return AVERROR_INVALIDDATA;
243  }
244 
246  if (!c->fdsp)
247  return AVERROR(ENOMEM);
248 
249  return av_tx_init(&c->tx_ctx, &c->tx_fn, AV_TX_FLOAT_MDCT, 1, 128, &scale, 0);
250 }
251 
252 static void run_imdct(HCAContext *c, ChannelContext *ch, int index, float *out)
253 {
254  c->tx_fn(c->tx_ctx, ch->imdct_out, ch->imdct_in, sizeof(float));
255 
256  c->fdsp->vector_fmul_window(out, ch->imdct_prev + (128 >> 1),
257  ch->imdct_out, window, 128 >> 1);
258 
259  memcpy(ch->imdct_prev, ch->imdct_out, 128 * sizeof(float));
260 }
261 
263  int index, unsigned band_count, unsigned base_band_count,
264  unsigned stereo_band_count)
265 {
266  float ratio_l = intensity_ratio_table[ch1->intensity[index]];
267  float ratio_r = ratio_l - 2.0f;
268  float *c1 = &ch1->imdct_in[base_band_count];
269  float *c2 = &ch2->imdct_in[base_band_count];
270 
271  if (ch1->chan_type != 1 || !stereo_band_count)
272  return;
273 
274  for (int i = 0; i < band_count; i++) {
275  *(c2++) = *c1 * ratio_r;
276  *(c1++) *= ratio_l;
277  }
278 }
279 
281  unsigned hfr_group_count,
282  unsigned bands_per_hfr_group,
283  unsigned start_band, unsigned total_band_count)
284 {
285  if (ch->chan_type == 2 || !bands_per_hfr_group)
286  return;
287 
288  for (int i = 0, k = start_band, l = start_band - 1; i < hfr_group_count; i++){
289  for (int j = 0; j < bands_per_hfr_group && k < total_band_count && l >= 0; j++, k++, l--){
290  ch->imdct_in[k] = scale_conversion_table[ (ch->hfr_scale[i] - ch->scale_factors[l]) & 63 ] * ch->imdct_in[l];
291  }
292  }
293 
294  ch->imdct_in[127] = 0;
295 }
296 
298 {
299  GetBitContext *gb = &c->gb;
300 
301  for (int i = 0; i < ch->count; i++) {
302  unsigned scale = ch->scale[i];
303  int nb_bits = max_bits_table[scale];
304  int value = get_bitsz(gb, nb_bits);
305  float factor;
306 
307  if (scale > 7) {
308  value = (1 - ((value & 1) << 1)) * (value >> 1);
309  if (!value)
310  skip_bits_long(gb, -1);
311  factor = value;
312  } else {
313  value += scale << 4;
314  skip_bits_long(gb, quant_spectrum_bits[value] - nb_bits);
315  factor = quant_spectrum_value[value];
316  }
317  ch->imdct_in[i] = factor * ch->base[i];
318  }
319 
320  memset(ch->imdct_in + ch->count, 0, sizeof(ch->imdct_in) - ch->count * sizeof(ch->imdct_in[0]));
321 }
322 
324  unsigned hfr_group_count,
325  int packed_noise_level,
326  const uint8_t *ath)
327 {
328  GetBitContext *gb = &c->gb;
329  int delta_bits = get_bits(gb, 3);
330 
331  if (delta_bits > 5) {
332  for (int i = 0; i < ch->count; i++)
333  ch->scale_factors[i] = get_bits(gb, 6);
334  } else if (delta_bits) {
335  int factor = get_bits(gb, 6);
336  int max_value = (1 << delta_bits) - 1;
337  int half_max = max_value >> 1;
338 
339  ch->scale_factors[0] = factor;
340  for (int i = 1; i < ch->count; i++){
341  int delta = get_bits(gb, delta_bits);
342 
343  if (delta == max_value) {
344  factor = get_bits(gb, 6);
345  } else {
346  factor += delta - half_max;
347  }
348  factor = av_clip_uintp2(factor, 6);
349 
350  ch->scale_factors[i] = factor;
351  }
352  } else {
353  memset(ch->scale_factors, 0, 128);
354  }
355 
356  if (ch->chan_type == 2){
357  ch->intensity[0] = get_bits(gb, 4);
358  if (ch->intensity[0] < 15) {
359  for (int i = 1; i < 8; i++)
360  ch->intensity[i] = get_bits(gb, 4);
361  }
362  } else {
363  for (int i = 0; i < hfr_group_count; i++)
364  ch->hfr_scale[i] = get_bits(gb, 6);
365  }
366 
367  for (int i = 0; i < ch->count; i++) {
368  int scale = ch->scale_factors[i];
369 
370  if (scale) {
371  scale = c->ath[i] + ((packed_noise_level + i) >> 8) - ((scale * 5) >> 1) + 2;
372  scale = scale_table[av_clip(scale, 0, 58)];
373  }
374  ch->scale[i] = scale;
375  }
376 
377  memset(ch->scale + ch->count, 0, sizeof(ch->scale) - ch->count);
378 
379  for (int i = 0; i < ch->count; i++)
381 }
382 
383 static int decode_frame(AVCodecContext *avctx, void *data,
384  int *got_frame_ptr, AVPacket *avpkt)
385 {
386  AVFrame *frame = data;
387  HCAContext *c = avctx->priv_data;
388  int ch, ret, packed_noise_level;
389  GetBitContext *gb = &c->gb;
390  float **samples;
391 
392  if (avctx->err_recognition & AV_EF_CRCCHECK) {
393  if (av_crc(c->crc_table, 0, avpkt->data, avpkt->size))
394  return AVERROR_INVALIDDATA;
395  }
396 
397  if ((ret = init_get_bits8(gb, avpkt->data, avpkt->size)) < 0)
398  return ret;
399 
400  if (get_bits(gb, 16) != 0xFFFF)
401  return AVERROR_INVALIDDATA;
402 
403  frame->nb_samples = 1024;
404  if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
405  return ret;
406  samples = (float **)frame->extended_data;
407 
408  packed_noise_level = (get_bits(gb, 9) << 8) - get_bits(gb, 7);
409 
410  for (ch = 0; ch < avctx->channels; ch++)
411  unpack(c, &c->ch[ch], c->hfr_group_count, packed_noise_level, c->ath);
412 
413  for (int i = 0; i < 8; i++) {
414  for (ch = 0; ch < avctx->channels; ch++)
415  dequantize_coefficients(c, &c->ch[ch]);
416  for (ch = 0; ch < avctx->channels; ch++)
419  for (ch = 0; ch < avctx->channels - 1; ch++)
420  apply_intensity_stereo(c, &c->ch[ch], &c->ch[ch+1], i,
423  for (ch = 0; ch < avctx->channels; ch++)
424  run_imdct(c, &c->ch[ch], i, samples[ch] + i * 128);
425  }
426 
427  *got_frame_ptr = 1;
428 
429  return avpkt->size;
430 }
431 
433 {
434  HCAContext *c = avctx->priv_data;
435 
436  av_freep(&c->fdsp);
437  av_tx_uninit(&c->tx_ctx);
438 
439  return 0;
440 }
441 
443  .name = "hca",
444  .long_name = NULL_IF_CONFIG_SMALL("CRI HCA"),
445  .type = AVMEDIA_TYPE_AUDIO,
446  .id = AV_CODEC_ID_HCA,
447  .priv_data_size = sizeof(HCAContext),
448  .init = decode_init,
449  .decode = decode_frame,
450  .close = decode_close,
451  .capabilities = AV_CODEC_CAP_DR1,
452  .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
454 };
float, planar
Definition: samplefmt.h:69
av_cold void av_tx_uninit(AVTXContext **ctx)
Frees a context and sets ctx to NULL, does nothing when ctx == NULL.
Definition: tx.c:110
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
version
Definition: libkvazaar.c:292
This structure describes decoded (raw) audio or video data.
Definition: frame.h:300
float imdct_in[128]
Definition: hcadec.c:31
uint8_t ath[128]
Definition: hcadec.c:49
static const float dequantizer_scaling_table[]
Definition: hca_data.h:111
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:379
uint8_t stereo_band_count
Definition: hcadec.c:57
static void skip_bits_long(GetBitContext *s, int n)
Skips the specified number of bits.
Definition: get_bits.h:291
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static const int8_t quant_spectrum_value[]
Definition: hca_data.h:41
int acc
Definition: yuv2rgb.c:555
int size
Definition: packet.h:356
const char * b
Definition: vf_curves.c:116
static void apply_intensity_stereo(HCAContext *s, ChannelContext *ch1, ChannelContext *ch2, int index, unsigned band_count, unsigned base_band_count, unsigned stereo_band_count)
Definition: hcadec.c:262
float imdct_out[128]
Definition: hcadec.c:32
static av_cold float ath(float f, float add)
Calculate ATH value for given frequency.
Definition: aacpsy.c:292
static const float quant_step_size[]
Definition: hca_data.h:123
AVCodec.
Definition: codec.h:190
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
int8_t scale_factors[128]
Definition: hcadec.c:34
av_tx_fn tx_fn
Definition: hcadec.c:60
static const float scale_conversion_table[]
Definition: hca_data.h:99
uint8_t total_band_count
Definition: hcadec.c:55
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:1194
uint8_t
#define av_cold
Definition: attributes.h:88
static void run_imdct(HCAContext *c, ChannelContext *ch, int index, float *out)
Definition: hcadec.c:252
static const uint8_t quant_spectrum_bits[]
Definition: hca_data.h:29
static const uint8_t ath_base_curve[656]
Definition: hca_data.h:129
float delta
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:627
static AVFrame * frame
Public header for CRC hash function implementation.
const char data[16]
Definition: mxf.c:91
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
Definition: mem.h:112
uint8_t * data
Definition: packet.h:355
static const uint64_t c1
Definition: murmur3.c:49
bitstream reader API header.
uint8_t bands_per_hfr_group
Definition: hcadec.c:58
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:849
void(* vector_fmul_window)(float *dst, const float *src0, const float *src1, const float *win, int len)
Overlap/add with window function.
Definition: float_dsp.h:119
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
void(* av_tx_fn)(AVTXContext *s, void *out, void *in, ptrdiff_t stride)
Function pointer to a function to perform the transform.
Definition: tx.h:92
av_cold AVFloatDSPContext * avpriv_float_dsp_alloc(int bit_exact)
Allocate a float DSP context.
Definition: float_dsp.c:135
int8_t intensity[8]
Definition: hcadec.c:36
#define AVERROR(e)
Definition: error.h:43
static void ath_init1(uint8_t *ath, int sample_rate)
Definition: hcadec.c:65
float imdct_prev[128]
Definition: hcadec.c:33
GetBitContext gb
Definition: hcadec.c:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
static av_cold int decode_init(AVCodecContext *avctx)
Definition: hcadec.c:104
const char * r
Definition: vf_curves.c:114
AVTXContext * tx_ctx
Definition: hcadec.c:61
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:606
const char * name
Name of the codec implementation.
Definition: codec.h:197
static const uint8_t scale_table[]
Definition: hca_data.h:53
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(const uint8_t *) pi - 0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(const int16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(const int16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(const int32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(const int32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(const int64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0f/(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0/(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float *) pi *(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double *) pi *(UINT64_C(1)<< 63))) #define FMT_PAIR_FUNC(out, in) static conv_func_type *const fmt_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), };static void cpy1(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, len);} static void cpy2(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 2 *len);} static void cpy4(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 4 *len);} static void cpy8(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 8 *len);} AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags) { 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) return NULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) return NULL;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)){ case 1:ctx->simd_f=cpy1;break;case 2:ctx->simd_f=cpy2;break;case 4:ctx->simd_f=cpy4;break;case 8:ctx->simd_f=cpy8;break;} } if(HAVE_X86ASM &&HAVE_MMX) 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);return ctx;} void swri_audio_convert_free(AudioConvert **ctx) { av_freep(ctx);} int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len) { int ch;int off=0;const int os=(out->planar ? 1 :out->ch_count) *out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask) { int planes=in->planar ? in->ch_count :1;unsigned m=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) { int planes=out->planar ? out->ch_count :1;unsigned m=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){ int planes=out->planar ? out->ch_count :1;for(ch=0;ch< planes;ch++){ ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
AVCodec ff_hca_decoder
Definition: hcadec.c:442
unsigned count
Definition: hcadec.c:38
static SDL_Window * window
Definition: ffplay.c:368
int ath_type
Definition: hcadec.c:51
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
Definition: avcodec.h:333
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:1655
int chan_type
Definition: hcadec.c:39
uint32_t av_crc(const AVCRC *ctx, uint32_t crc, const uint8_t *buffer, size_t length)
Calculate the CRC of a block.
Definition: crc.c:392
uint8_t base_band_count
Definition: hcadec.c:56
#define s(width, name)
Definition: cbs_vp9.c:257
static const float intensity_ratio_table[]
Definition: hca_data.h:85
uint8_t channel_config
Definition: hcadec.c:54
static int ath_init(uint8_t *ath, int type, int sample_rate)
Definition: hcadec.c:83
sample_rate
Libavcodec external API header.
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
static av_cold int decode_close(AVCodecContext *avctx)
Definition: hcadec.c:432
int sample_rate
samples per second
Definition: avcodec.h:1186
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:677
main external API structure.
Definition: avcodec.h:526
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1854
int extradata_size
Definition: avcodec.h:628
double value
Definition: eval.c:98
static void dequantize_coefficients(HCAContext *c, ChannelContext *ch)
Definition: hcadec.c:297
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
Definition: hcadec.c:383
int index
Definition: gxfenc.c:89
static unsigned ceil2(unsigned a, unsigned b)
Definition: hcadec.c:99
cl_device_type type
ChannelContext ch[16]
Definition: hcadec.c:47
#define AV_EF_CRCCHECK
Verify checksums embedded in the bitstream (could be of either encoded or decoded data...
Definition: avcodec.h:1663
static const int factor[16]
Definition: vf_pp7.c:75
av_cold int av_tx_init(AVTXContext **ctx, av_tx_fn *tx, enum AVTXType type, int inv, int len, const void *scale, uint64_t flags)
Initialize a transform context with the given configuration Currently power of two lengths from 2 to ...
Definition: tx.c:123
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:546
int8_t * hfr_scale
Definition: hcadec.c:37
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:374
common internal api header.
static const uint8_t max_bits_table[]
Definition: hca_data.h:25
static void unpack(HCAContext *c, ChannelContext *ch, unsigned hfr_group_count, int packed_noise_level, const uint8_t *ath)
Definition: hcadec.c:323
static double c[64]
uint8_t scale[128]
Definition: hcadec.c:35
static const uint64_t c2
Definition: murmur3.c:50
static void reconstruct_hfr(HCAContext *s, ChannelContext *ch, unsigned hfr_group_count, unsigned bands_per_hfr_group, unsigned start_band, unsigned total_band_count)
Definition: hcadec.c:280
#define MKBETAG(a, b, c, d)
Definition: common.h:407
void * priv_data
Definition: avcodec.h:553
uint8_t track_count
Definition: hcadec.c:53
Standard MDCT with sample data type of float and a scale type of float.
Definition: tx.h:55
const AVCRC * crc_table
Definition: hcadec.c:45
int channels
number of audio channels
Definition: avcodec.h:1187
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:731
FILE * out
Definition: movenc.c:54
#define av_freep(p)
AVFloatDSPContext * fdsp
Definition: hcadec.c:62
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:347
float base[128]
Definition: hcadec.c:30
This structure stores compressed data.
Definition: packet.h:332
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:366
uint32_t AVCRC
Definition: crc.h:47
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:50
static av_always_inline int get_bitsz(GetBitContext *s, int n)
Read 0-25 bits.
Definition: get_bits.h:415
unsigned hfr_group_count
Definition: hcadec.c:52