FFmpeg  4.4.5
atrac3plusdec.c
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1 /*
2  * ATRAC3+ compatible decoder
3  *
4  * Copyright (c) 2010-2013 Maxim Poliakovski
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * Sony ATRAC3+ compatible decoder.
26  *
27  * Container formats used to store its data:
28  * RIFF WAV (.at3) and Sony OpenMG (.oma, .aa3).
29  *
30  * Technical description of this codec can be found here:
31  * http://wiki.multimedia.cx/index.php?title=ATRAC3plus
32  *
33  * Kudos to Benjamin Larsson and Michael Karcher
34  * for their precious technical help!
35  */
36 
37 #include <stdint.h>
38 #include <string.h>
39 
41 #include "libavutil/float_dsp.h"
42 #include "libavutil/mem_internal.h"
43 #include "libavutil/thread.h"
44 #include "avcodec.h"
45 #include "get_bits.h"
46 #include "internal.h"
47 #include "atrac.h"
48 #include "atrac3plus.h"
49 
50 typedef struct ATRAC3PContext {
53 
54  DECLARE_ALIGNED(32, float, samples)[2][ATRAC3P_FRAME_SAMPLES]; ///< quantized MDCT spectrum
55  DECLARE_ALIGNED(32, float, mdct_buf)[2][ATRAC3P_FRAME_SAMPLES]; ///< output of the IMDCT
56  DECLARE_ALIGNED(32, float, time_buf)[2][ATRAC3P_FRAME_SAMPLES]; ///< output of the gain compensation
58 
59  AtracGCContext gainc_ctx; ///< gain compensation context
61  FFTContext ipqf_dct_ctx; ///< IDCT context used by IPQF
62 
63  Atrac3pChanUnitCtx *ch_units; ///< global channel units
64 
65  int num_channel_blocks; ///< number of channel blocks
66  uint8_t channel_blocks[5]; ///< channel configuration descriptor
67  uint64_t my_channel_layout; ///< current channel layout
69 
71 {
72  ATRAC3PContext *ctx = avctx->priv_data;
73 
74  av_freep(&ctx->ch_units);
75  av_freep(&ctx->fdsp);
76 
77  ff_mdct_end(&ctx->mdct_ctx);
78  ff_mdct_end(&ctx->ipqf_dct_ctx);
79 
80  return 0;
81 }
82 
84  AVCodecContext *avctx)
85 {
86  memset(ctx->channel_blocks, 0, sizeof(ctx->channel_blocks));
87 
88  switch (avctx->channels) {
89  case 1:
90  if (avctx->channel_layout != AV_CH_FRONT_LEFT)
92 
93  ctx->num_channel_blocks = 1;
94  ctx->channel_blocks[0] = CH_UNIT_MONO;
95  break;
96  case 2:
98  ctx->num_channel_blocks = 1;
99  ctx->channel_blocks[0] = CH_UNIT_STEREO;
100  break;
101  case 3:
103  ctx->num_channel_blocks = 2;
104  ctx->channel_blocks[0] = CH_UNIT_STEREO;
105  ctx->channel_blocks[1] = CH_UNIT_MONO;
106  break;
107  case 4:
109  ctx->num_channel_blocks = 3;
110  ctx->channel_blocks[0] = CH_UNIT_STEREO;
111  ctx->channel_blocks[1] = CH_UNIT_MONO;
112  ctx->channel_blocks[2] = CH_UNIT_MONO;
113  break;
114  case 6:
116  ctx->num_channel_blocks = 4;
117  ctx->channel_blocks[0] = CH_UNIT_STEREO;
118  ctx->channel_blocks[1] = CH_UNIT_MONO;
119  ctx->channel_blocks[2] = CH_UNIT_STEREO;
120  ctx->channel_blocks[3] = CH_UNIT_MONO;
121  break;
122  case 7:
124  ctx->num_channel_blocks = 5;
125  ctx->channel_blocks[0] = CH_UNIT_STEREO;
126  ctx->channel_blocks[1] = CH_UNIT_MONO;
127  ctx->channel_blocks[2] = CH_UNIT_STEREO;
128  ctx->channel_blocks[3] = CH_UNIT_MONO;
129  ctx->channel_blocks[4] = CH_UNIT_MONO;
130  break;
131  case 8:
133  ctx->num_channel_blocks = 5;
134  ctx->channel_blocks[0] = CH_UNIT_STEREO;
135  ctx->channel_blocks[1] = CH_UNIT_MONO;
136  ctx->channel_blocks[2] = CH_UNIT_STEREO;
137  ctx->channel_blocks[3] = CH_UNIT_STEREO;
138  ctx->channel_blocks[4] = CH_UNIT_MONO;
139  break;
140  default:
141  av_log(avctx, AV_LOG_ERROR,
142  "Unsupported channel count: %d!\n", avctx->channels);
143  return AVERROR_INVALIDDATA;
144  }
145 
146  return 0;
147 }
148 
149 static av_cold void atrac3p_init_static(void)
150 {
153 }
154 
156 {
157  static AVOnce init_static_once = AV_ONCE_INIT;
158  ATRAC3PContext *ctx = avctx->priv_data;
159  int i, ch, ret;
160 
161  if (!avctx->block_align) {
162  av_log(avctx, AV_LOG_ERROR, "block_align is not set\n");
163  return AVERROR(EINVAL);
164  }
165 
166  /* initialize IPQF */
167  ff_mdct_init(&ctx->ipqf_dct_ctx, 5, 1, 32.0 / 32768.0);
168 
169  ff_atrac3p_init_imdct(avctx, &ctx->mdct_ctx);
170 
171  ff_atrac_init_gain_compensation(&ctx->gainc_ctx, 6, 2);
172 
173  if ((ret = set_channel_params(ctx, avctx)) < 0)
174  return ret;
175 
176  ctx->my_channel_layout = avctx->channel_layout;
177 
178  ctx->ch_units = av_mallocz_array(ctx->num_channel_blocks, sizeof(*ctx->ch_units));
180 
181  if (!ctx->ch_units || !ctx->fdsp) {
182  return AVERROR(ENOMEM);
183  }
184 
185  for (i = 0; i < ctx->num_channel_blocks; i++) {
186  for (ch = 0; ch < 2; ch++) {
187  ctx->ch_units[i].channels[ch].ch_num = ch;
188  ctx->ch_units[i].channels[ch].wnd_shape = &ctx->ch_units[i].channels[ch].wnd_shape_hist[0][0];
189  ctx->ch_units[i].channels[ch].wnd_shape_prev = &ctx->ch_units[i].channels[ch].wnd_shape_hist[1][0];
190  ctx->ch_units[i].channels[ch].gain_data = &ctx->ch_units[i].channels[ch].gain_data_hist[0][0];
191  ctx->ch_units[i].channels[ch].gain_data_prev = &ctx->ch_units[i].channels[ch].gain_data_hist[1][0];
192  ctx->ch_units[i].channels[ch].tones_info = &ctx->ch_units[i].channels[ch].tones_info_hist[0][0];
193  ctx->ch_units[i].channels[ch].tones_info_prev = &ctx->ch_units[i].channels[ch].tones_info_hist[1][0];
194  }
195 
196  ctx->ch_units[i].waves_info = &ctx->ch_units[i].wave_synth_hist[0];
197  ctx->ch_units[i].waves_info_prev = &ctx->ch_units[i].wave_synth_hist[1];
198  }
199 
201 
202  ff_thread_once(&init_static_once, atrac3p_init_static);
203 
204  return 0;
205 }
206 
208  float out[2][ATRAC3P_FRAME_SAMPLES],
209  int num_channels,
210  AVCodecContext *avctx)
211 {
212  int i, sb, ch, qu, nspeclines, RNG_index;
213  float *dst, q;
214  int16_t *src;
215  /* calculate RNG table index for each subband */
216  int sb_RNG_index[ATRAC3P_SUBBANDS] = { 0 };
217 
218  if (ch_unit->mute_flag) {
219  for (ch = 0; ch < num_channels; ch++)
220  memset(out[ch], 0, ATRAC3P_FRAME_SAMPLES * sizeof(*out[ch]));
221  return;
222  }
223 
224  for (qu = 0, RNG_index = 0; qu < ch_unit->used_quant_units; qu++)
225  RNG_index += ch_unit->channels[0].qu_sf_idx[qu] +
226  ch_unit->channels[1].qu_sf_idx[qu];
227 
228  for (sb = 0; sb < ch_unit->num_coded_subbands; sb++, RNG_index += 128)
229  sb_RNG_index[sb] = RNG_index & 0x3FC;
230 
231  /* inverse quant and power compensation */
232  for (ch = 0; ch < num_channels; ch++) {
233  /* clear channel's residual spectrum */
234  memset(out[ch], 0, ATRAC3P_FRAME_SAMPLES * sizeof(*out[ch]));
235 
236  for (qu = 0; qu < ch_unit->used_quant_units; qu++) {
238  dst = &out[ch][ff_atrac3p_qu_to_spec_pos[qu]];
239  nspeclines = ff_atrac3p_qu_to_spec_pos[qu + 1] -
241 
242  if (ch_unit->channels[ch].qu_wordlen[qu] > 0) {
243  q = ff_atrac3p_sf_tab[ch_unit->channels[ch].qu_sf_idx[qu]] *
244  ff_atrac3p_mant_tab[ch_unit->channels[ch].qu_wordlen[qu]];
245  for (i = 0; i < nspeclines; i++)
246  dst[i] = src[i] * q;
247  }
248  }
249 
250  for (sb = 0; sb < ch_unit->num_coded_subbands; sb++)
251  ff_atrac3p_power_compensation(ch_unit, ctx->fdsp, ch, &out[ch][0],
252  sb_RNG_index[sb], sb);
253  }
254 
255  if (ch_unit->unit_type == CH_UNIT_STEREO) {
256  for (sb = 0; sb < ch_unit->num_coded_subbands; sb++) {
257  if (ch_unit->swap_channels[sb]) {
258  for (i = 0; i < ATRAC3P_SUBBAND_SAMPLES; i++)
259  FFSWAP(float, out[0][sb * ATRAC3P_SUBBAND_SAMPLES + i],
260  out[1][sb * ATRAC3P_SUBBAND_SAMPLES + i]);
261  }
262 
263  /* flip coefficients' sign if requested */
264  if (ch_unit->negate_coeffs[sb])
265  for (i = 0; i < ATRAC3P_SUBBAND_SAMPLES; i++)
266  out[1][sb * ATRAC3P_SUBBAND_SAMPLES + i] = -(out[1][sb * ATRAC3P_SUBBAND_SAMPLES + i]);
267  }
268  }
269 }
270 
272  int num_channels, AVCodecContext *avctx)
273 {
274  int ch, sb;
275 
276  for (ch = 0; ch < num_channels; ch++) {
277  for (sb = 0; sb < ch_unit->num_subbands; sb++) {
278  /* inverse transform and windowing */
279  ff_atrac3p_imdct(ctx->fdsp, &ctx->mdct_ctx,
280  &ctx->samples[ch][sb * ATRAC3P_SUBBAND_SAMPLES],
281  &ctx->mdct_buf[ch][sb * ATRAC3P_SUBBAND_SAMPLES],
282  (ch_unit->channels[ch].wnd_shape_prev[sb] << 1) +
283  ch_unit->channels[ch].wnd_shape[sb], sb);
284 
285  /* gain compensation and overlapping */
286  ff_atrac_gain_compensation(&ctx->gainc_ctx,
287  &ctx->mdct_buf[ch][sb * ATRAC3P_SUBBAND_SAMPLES],
288  &ch_unit->prev_buf[ch][sb * ATRAC3P_SUBBAND_SAMPLES],
289  &ch_unit->channels[ch].gain_data_prev[sb],
290  &ch_unit->channels[ch].gain_data[sb],
292  &ctx->time_buf[ch][sb * ATRAC3P_SUBBAND_SAMPLES]);
293  }
294 
295  /* zero unused subbands in both output and overlapping buffers */
296  memset(&ch_unit->prev_buf[ch][ch_unit->num_subbands * ATRAC3P_SUBBAND_SAMPLES],
297  0,
298  (ATRAC3P_SUBBANDS - ch_unit->num_subbands) *
300  sizeof(ch_unit->prev_buf[ch][ch_unit->num_subbands * ATRAC3P_SUBBAND_SAMPLES]));
301  memset(&ctx->time_buf[ch][ch_unit->num_subbands * ATRAC3P_SUBBAND_SAMPLES],
302  0,
303  (ATRAC3P_SUBBANDS - ch_unit->num_subbands) *
305  sizeof(ctx->time_buf[ch][ch_unit->num_subbands * ATRAC3P_SUBBAND_SAMPLES]));
306 
307  /* resynthesize and add tonal signal */
308  if (ch_unit->waves_info->tones_present ||
309  ch_unit->waves_info_prev->tones_present) {
310  for (sb = 0; sb < ch_unit->num_subbands; sb++)
311  if (ch_unit->channels[ch].tones_info[sb].num_wavs ||
312  ch_unit->channels[ch].tones_info_prev[sb].num_wavs) {
313  ff_atrac3p_generate_tones(ch_unit, ctx->fdsp, ch, sb,
314  &ctx->time_buf[ch][sb * 128]);
315  }
316  }
317 
318  /* subband synthesis and acoustic signal output */
319  ff_atrac3p_ipqf(&ctx->ipqf_dct_ctx, &ch_unit->ipqf_ctx[ch],
320  &ctx->time_buf[ch][0], &ctx->outp_buf[ch][0]);
321  }
322 
323  /* swap window shape and gain control buffers. */
324  for (ch = 0; ch < num_channels; ch++) {
325  FFSWAP(uint8_t *, ch_unit->channels[ch].wnd_shape,
326  ch_unit->channels[ch].wnd_shape_prev);
327  FFSWAP(AtracGainInfo *, ch_unit->channels[ch].gain_data,
328  ch_unit->channels[ch].gain_data_prev);
329  FFSWAP(Atrac3pWavesData *, ch_unit->channels[ch].tones_info,
330  ch_unit->channels[ch].tones_info_prev);
331  }
332 
334 }
335 
336 static int atrac3p_decode_frame(AVCodecContext *avctx, void *data,
337  int *got_frame_ptr, AVPacket *avpkt)
338 {
339  ATRAC3PContext *ctx = avctx->priv_data;
340  AVFrame *frame = data;
341  int i, ret, ch_unit_id, ch_block = 0, out_ch_index = 0, channels_to_process;
342  float **samples_p = (float **)frame->extended_data;
343 
345  if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
346  return ret;
347 
348  if ((ret = init_get_bits8(&ctx->gb, avpkt->data, avpkt->size)) < 0)
349  return ret;
350 
351  if (get_bits1(&ctx->gb)) {
352  av_log(avctx, AV_LOG_ERROR, "Invalid start bit!\n");
353  return AVERROR_INVALIDDATA;
354  }
355 
356  while (get_bits_left(&ctx->gb) >= 2 &&
357  (ch_unit_id = get_bits(&ctx->gb, 2)) != CH_UNIT_TERMINATOR) {
358  if (ch_unit_id == CH_UNIT_EXTENSION) {
359  avpriv_report_missing_feature(avctx, "Channel unit extension");
360  return AVERROR_PATCHWELCOME;
361  }
362  if (ch_block >= ctx->num_channel_blocks ||
363  ctx->channel_blocks[ch_block] != ch_unit_id) {
364  av_log(avctx, AV_LOG_ERROR,
365  "Frame data doesn't match channel configuration!\n");
366  return AVERROR_INVALIDDATA;
367  }
368 
369  ctx->ch_units[ch_block].unit_type = ch_unit_id;
370  channels_to_process = ch_unit_id + 1;
371 
372  if ((ret = ff_atrac3p_decode_channel_unit(&ctx->gb,
373  &ctx->ch_units[ch_block],
374  channels_to_process,
375  avctx)) < 0)
376  return ret;
377 
378  decode_residual_spectrum(ctx, &ctx->ch_units[ch_block], ctx->samples,
379  channels_to_process, avctx);
380  reconstruct_frame(ctx, &ctx->ch_units[ch_block],
381  channels_to_process, avctx);
382 
383  for (i = 0; i < channels_to_process; i++)
384  memcpy(samples_p[out_ch_index + i], ctx->outp_buf[i],
385  ATRAC3P_FRAME_SAMPLES * sizeof(**samples_p));
386 
387  ch_block++;
388  out_ch_index += channels_to_process;
389  }
390 
391  *got_frame_ptr = 1;
392 
393  return avctx->codec_id == AV_CODEC_ID_ATRAC3P ? FFMIN(avctx->block_align, avpkt->size) : avpkt->size;
394 }
395 
397  .name = "atrac3plus",
398  .long_name = NULL_IF_CONFIG_SMALL("ATRAC3+ (Adaptive TRansform Acoustic Coding 3+)"),
399  .type = AVMEDIA_TYPE_AUDIO,
400  .id = AV_CODEC_ID_ATRAC3P,
401  .capabilities = AV_CODEC_CAP_DR1,
403  .priv_data_size = sizeof(ATRAC3PContext),
405  .close = atrac3p_decode_close,
407 };
408 
410  .name = "atrac3plusal",
411  .long_name = NULL_IF_CONFIG_SMALL("ATRAC3+ AL (Adaptive TRansform Acoustic Coding 3+ Advanced Lossless)"),
412  .type = AVMEDIA_TYPE_AUDIO,
413  .id = AV_CODEC_ID_ATRAC3PAL,
414  .capabilities = AV_CODEC_CAP_DR1,
416  .priv_data_size = sizeof(ATRAC3PContext),
418  .close = atrac3p_decode_close,
420 };
av_cold void ff_atrac3p_init_vlcs(void)
Initialize VLC tables for bitstream parsing.
Definition: atrac3plus.c:76
int ff_atrac3p_decode_channel_unit(GetBitContext *gb, Atrac3pChanUnitCtx *ctx, int num_channels, AVCodecContext *avctx)
Decode bitstream data of a channel unit.
Definition: atrac3plus.c:1662
Global structures, constants and data for ATRAC3+ decoder.
void ff_atrac3p_init_dsp_static(void)
Initialize sine waves synthesizer and ff_sine_* tables.
Definition: atrac3plusdsp.c:96
const uint16_t ff_atrac3p_qu_to_spec_pos[33]
Map quant unit number to its position in the spectrum.
Definition: atrac3plusdsp.c:44
#define ATRAC3P_FRAME_SAMPLES
Definition: atrac3plus.h:44
void ff_atrac3p_init_imdct(AVCodecContext *avctx, FFTContext *mdct_ctx)
Initialize IMDCT transform.
Definition: atrac3plusdsp.c:82
#define ATRAC3P_SUBBAND_SAMPLES
number of samples per subband
Definition: atrac3plus.h:43
const float ff_atrac3p_mant_tab[8]
Definition: atrac3plusdsp.c:69
void ff_atrac3p_imdct(AVFloatDSPContext *fdsp, FFTContext *mdct_ctx, float *pIn, float *pOut, int wind_id, int sb)
Regular IMDCT and windowing without overlapping, with spectrum reversal in the odd subbands.
const float ff_atrac3p_sf_tab[64]
Definition: atrac3plusdsp.c:54
void ff_atrac3p_generate_tones(Atrac3pChanUnitCtx *ch_unit, AVFloatDSPContext *fdsp, int ch_num, int sb, float *out)
Synthesize sine waves for a particular subband.
#define ATRAC3P_SUBBANDS
Global unit sizes.
Definition: atrac3plus.h:42
@ CH_UNIT_TERMINATOR
unit sequence terminator
Definition: atrac3plus.h:56
@ CH_UNIT_EXTENSION
unit containing extension information
Definition: atrac3plus.h:55
@ CH_UNIT_STEREO
unit containing two jointly-coded channels
Definition: atrac3plus.h:54
@ CH_UNIT_MONO
unit containing one coded channel
Definition: atrac3plus.h:53
void ff_atrac3p_power_compensation(Atrac3pChanUnitCtx *ctx, AVFloatDSPContext *fdsp, int ch_index, float *sp, int rng_index, int sb_num)
Perform power compensation aka noise dithering.
void ff_atrac3p_ipqf(FFTContext *dct_ctx, Atrac3pIPQFChannelCtx *hist, const float *in, float *out)
Subband synthesis filter based on the polyphase quadrature (pseudo-QMF) filter bank.
static av_cold int atrac3p_decode_close(AVCodecContext *avctx)
Definition: atrac3plusdec.c:70
static int atrac3p_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
AVCodec ff_atrac3p_decoder
static av_cold int set_channel_params(ATRAC3PContext *ctx, AVCodecContext *avctx)
Definition: atrac3plusdec.c:83
static void decode_residual_spectrum(ATRAC3PContext *ctx, Atrac3pChanUnitCtx *ch_unit, float out[2][ATRAC3P_FRAME_SAMPLES], int num_channels, AVCodecContext *avctx)
static void reconstruct_frame(ATRAC3PContext *ctx, Atrac3pChanUnitCtx *ch_unit, int num_channels, AVCodecContext *avctx)
static av_cold void atrac3p_init_static(void)
static av_cold int atrac3p_decode_init(AVCodecContext *avctx)
AVCodec ff_atrac3pal_decoder
void ff_atrac_gain_compensation(AtracGCContext *gctx, float *in, float *prev, AtracGainInfo *gc_now, AtracGainInfo *gc_next, int num_samples, float *out)
Apply gain compensation and perform the MDCT overlapping part.
Definition: atrac.c:87
av_cold void ff_atrac_init_gain_compensation(AtracGCContext *gctx, int id2exp_offset, int loc_scale)
Initialize gain compensation context.
Definition: atrac.c:69
ATRAC common header.
#define av_cold
Definition: attributes.h:88
uint8_t
Libavcodec external API header.
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
audio channel layout utility functions
#define FFSWAP(type, a, b)
Definition: common.h:108
#define FFMIN(a, b)
Definition: common.h:105
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1900
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
static AVFrame * frame
#define ff_mdct_init
Definition: fft.h:161
#define ff_mdct_end
Definition: fft.h:162
bitstream reader API header.
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:849
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:498
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:677
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:379
#define AV_CH_LAYOUT_4POINT0
#define AV_CH_LAYOUT_7POINT1
#define AV_CH_LAYOUT_MONO
#define AV_CH_LAYOUT_SURROUND
#define AV_CH_LAYOUT_6POINT1_BACK
#define AV_CH_LAYOUT_STEREO
#define AV_CH_LAYOUT_5POINT1_BACK
#define AV_CH_FRONT_LEFT
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
Definition: avcodec.h:333
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
@ AV_CODEC_ID_ATRAC3P
Definition: codec_id.h:463
@ AV_CODEC_ID_ATRAC3PAL
Definition: codec_id.h:508
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
Definition: mem.c:190
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
Definition: mem.h:117
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
@ AV_SAMPLE_FMT_FLTP
float, planar
Definition: samplefmt.h:69
for(j=16;j >0;--j)
int i
Definition: input.c:407
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:41
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:49
av_cold AVFloatDSPContext * avpriv_float_dsp_alloc(int bit_exact)
Allocate a float DSP context.
Definition: float_dsp.c:135
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
void avpriv_report_missing_feature(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
#define AVOnce
Definition: thread.h:172
static int ff_thread_once(char *control, void(*routine)(void))
Definition: thread.h:175
#define AV_ONCE_INIT
Definition: thread.h:173
const char data[16]
Definition: mxf.c:142
static const float qu[2]
Definition: sipr16kdata.h:28
float outp_buf[2][ATRAC3P_FRAME_SAMPLES]
Definition: atrac3plusdec.c:57
Atrac3pChanUnitCtx * ch_units
global channel units
Definition: atrac3plusdec.c:63
uint64_t my_channel_layout
current channel layout
Definition: atrac3plusdec.c:67
float time_buf[2][ATRAC3P_FRAME_SAMPLES]
output of the gain compensation
Definition: atrac3plusdec.c:56
GetBitContext gb
Definition: atrac3plusdec.c:51
AVFloatDSPContext * fdsp
Definition: atrac3plusdec.c:52
int num_channel_blocks
number of channel blocks
Definition: atrac3plusdec.c:65
AtracGCContext gainc_ctx
gain compensation context
Definition: atrac3plusdec.c:59
float mdct_buf[2][ATRAC3P_FRAME_SAMPLES]
output of the IMDCT
Definition: atrac3plusdec.c:55
float samples[2][ATRAC3P_FRAME_SAMPLES]
quantized MDCT spectrum
Definition: atrac3plusdec.c:54
FFTContext ipqf_dct_ctx
IDCT context used by IPQF.
Definition: atrac3plusdec.c:61
uint8_t channel_blocks[5]
channel configuration descriptor
Definition: atrac3plusdec.c:66
FFTContext mdct_ctx
Definition: atrac3plusdec.c:60
main external API structure.
Definition: avcodec.h:536
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:1204
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:616
int channels
number of audio channels
Definition: avcodec.h:1197
enum AVCodecID codec_id
Definition: avcodec.h:546
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs.
Definition: avcodec.h:1233
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:1247
void * priv_data
Definition: avcodec.h:563
AVCodec.
Definition: codec.h:197
const char * name
Name of the codec implementation.
Definition: codec.h:204
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:384
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:365
This structure stores compressed data.
Definition: packet.h:346
int size
Definition: packet.h:370
uint8_t * data
Definition: packet.h:369
int qu_sf_idx[32]
array of scale factor indexes for each quant unit
Definition: atrac3plus.h:98
int qu_wordlen[32]
array of word lengths for each quant unit
Definition: atrac3plus.h:97
uint8_t * wnd_shape
IMDCT window shape for current frame.
Definition: atrac3plus.h:105
AtracGainInfo * gain_data_prev
gain control data for previous frame
Definition: atrac3plus.h:111
int16_t spectrum[2048]
decoded IMDCT spectrum
Definition: atrac3plus.h:100
uint8_t * wnd_shape_prev
IMDCT window shape for previous frame.
Definition: atrac3plus.h:106
AtracGainInfo * gain_data
gain control data for next frame
Definition: atrac3plus.h:110
Atrac3pWavesData * tones_info
Definition: atrac3plus.h:116
Atrac3pWavesData * tones_info_prev
Definition: atrac3plus.h:117
Channel unit parameters.
Definition: atrac3plus.h:133
Atrac3pWaveSynthParams * waves_info
Definition: atrac3plus.h:151
float prev_buf[2][ATRAC3P_FRAME_SAMPLES]
overlapping buffer
Definition: atrac3plus.h:155
uint8_t swap_channels[ATRAC3P_SUBBANDS]
1 - perform subband-wise channel swapping
Definition: atrac3plus.h:145
uint8_t negate_coeffs[ATRAC3P_SUBBANDS]
1 - subband-wise IMDCT coefficients negation
Definition: atrac3plus.h:146
int mute_flag
mute flag
Definition: atrac3plus.h:140
int used_quant_units
number of quant units with coded spectrum
Definition: atrac3plus.h:138
Atrac3pChanParams channels[2]
Definition: atrac3plus.h:147
Atrac3pIPQFChannelCtx ipqf_ctx[2]
Definition: atrac3plus.h:154
Atrac3pWaveSynthParams * waves_info_prev
Definition: atrac3plus.h:152
int num_coded_subbands
number of subbands with coded spectrum
Definition: atrac3plus.h:139
int unit_type
unit type (mono/stereo)
Definition: atrac3plus.h:135
int tones_present
1 - tones info present
Definition: atrac3plus.h:122
Parameters of a group of sine waves.
Definition: atrac3plus.h:75
int num_wavs
number of sine waves in the group
Definition: atrac3plus.h:78
Gain compensation context structure.
Definition: atrac.h:44
Gain control parameters for one subband.
Definition: atrac.h:35
Definition: fft.h:83
#define av_freep(p)
#define av_log(a,...)
#define src
Definition: vp8dsp.c:255
FILE * out
Definition: movenc.c:54
AVFormatContext * ctx
Definition: movenc.c:48
if(ret< 0)
Definition: vf_mcdeint.c:282