aarch64: Add assembly support for -fsanitize=hwaddress tagged globals.
[libav.git] / libavcodec / libfdk-aacenc.c
CommitLineData
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MS
1/*
2 * AAC encoder wrapper
3 * Copyright (c) 2012 Martin Storsjo
4 *
5 * This file is part of Libav.
6 *
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MS
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
37eeb5e2 10 *
2f706519
MS
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
37eeb5e2
MS
18 */
19
20#include <fdk-aac/aacenc_lib.h>
21
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JR
22#include "libavutil/channel_layout.h"
23#include "libavutil/common.h"
24#include "libavutil/opt.h"
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MS
25#include "avcodec.h"
26#include "audio_frame_queue.h"
27#include "internal.h"
37eeb5e2 28
2a9e1c12 29#ifdef AACENCODER_LIB_VL0
141c960e 30#define FDKENC_VER_AT_LEAST(vl0, vl1) \
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MS
31 ((AACENCODER_LIB_VL0 > vl0) || \
32 (AACENCODER_LIB_VL0 == vl0 && AACENCODER_LIB_VL1 >= vl1))
33#else
34#define FDKENC_VER_AT_LEAST(vl0, vl1) 0
35#endif
141c960e 36
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MS
37typedef struct AACContext {
38 const AVClass *class;
39 HANDLE_AACENCODER handle;
40 int afterburner;
41 int eld_sbr;
7e929dac 42 int eld_v2;
37eeb5e2 43 int signaling;
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KK
44 int latm;
45 int header_period;
375bff70 46 int vbr;
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MS
47
48 AudioFrameQueue afq;
49} AACContext;
50
51static const AVOption aac_enc_options[] = {
e6153f17
MS
52 { "afterburner", "Afterburner (improved quality)", offsetof(AACContext, afterburner), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
53 { "eld_sbr", "Enable SBR for ELD (for SBR in other configurations, use the -profile parameter)", offsetof(AACContext, eld_sbr), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
7e929dac
MS
54#if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0
55 { "eld_v2", "Enable ELDv2 (LD-MPS extension for ELD stereo signals)", offsetof(AACContext, eld_v2), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
56#endif
e6153f17 57 { "signaling", "SBR/PS signaling style", offsetof(AACContext, signaling), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 2, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" },
124134e4
MS
58 { "default", "Choose signaling implicitly (explicit hierarchical by default, implicit if global header is disabled)", 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" },
59 { "implicit", "Implicit backwards compatible signaling", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" },
60 { "explicit_sbr", "Explicit SBR, implicit PS signaling", 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" },
61 { "explicit_hierarchical", "Explicit hierarchical signaling", 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" },
e6153f17
MS
62 { "latm", "Output LATM/LOAS encapsulated data", offsetof(AACContext, latm), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
63 { "header_period", "StreamMuxConfig and PCE repetition period (in frames)", offsetof(AACContext, header_period), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 0xffff, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
375bff70 64 { "vbr", "VBR mode (1-5)", offsetof(AACContext, vbr), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 5, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
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MS
65 { NULL }
66};
67
68static const AVClass aac_enc_class = {
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DB
69 .class_name = "libfdk_aac",
70 .item_name = av_default_item_name,
71 .option = aac_enc_options,
72 .version = LIBAVUTIL_VERSION_INT,
37eeb5e2
MS
73};
74
75static const char *aac_get_error(AACENC_ERROR err)
76{
77 switch (err) {
78 case AACENC_OK:
79 return "No error";
80 case AACENC_INVALID_HANDLE:
81 return "Invalid handle";
82 case AACENC_MEMORY_ERROR:
83 return "Memory allocation error";
84 case AACENC_UNSUPPORTED_PARAMETER:
85 return "Unsupported parameter";
86 case AACENC_INVALID_CONFIG:
87 return "Invalid config";
88 case AACENC_INIT_ERROR:
89 return "Initialization error";
90 case AACENC_INIT_AAC_ERROR:
91 return "AAC library initialization error";
92 case AACENC_INIT_SBR_ERROR:
93 return "SBR library initialization error";
94 case AACENC_INIT_TP_ERROR:
95 return "Transport library initialization error";
96 case AACENC_INIT_META_ERROR:
97 return "Metadata library initialization error";
98 case AACENC_ENCODE_ERROR:
99 return "Encoding error";
100 case AACENC_ENCODE_EOF:
101 return "End of file";
102 default:
103 return "Unknown error";
104 }
105}
106
107static int aac_encode_close(AVCodecContext *avctx)
108{
109 AACContext *s = avctx->priv_data;
110
111 if (s->handle)
112 aacEncClose(&s->handle);
37eeb5e2
MS
113 av_freep(&avctx->extradata);
114 ff_af_queue_close(&s->afq);
115
116 return 0;
117}
118
119static av_cold int aac_encode_init(AVCodecContext *avctx)
120{
121 AACContext *s = avctx->priv_data;
122 int ret = AVERROR(EINVAL);
123 AACENC_InfoStruct info = { 0 };
124 CHANNEL_MODE mode;
125 AACENC_ERROR err;
126 int aot = FF_PROFILE_AAC_LOW + 1;
127 int sce = 0, cpe = 0;
128
129 if ((err = aacEncOpen(&s->handle, 0, avctx->channels)) != AACENC_OK) {
130 av_log(avctx, AV_LOG_ERROR, "Unable to open the encoder: %s\n",
131 aac_get_error(err));
132 goto error;
133 }
134
135 if (avctx->profile != FF_PROFILE_UNKNOWN)
136 aot = avctx->profile + 1;
137
138 if ((err = aacEncoder_SetParam(s->handle, AACENC_AOT, aot)) != AACENC_OK) {
139 av_log(avctx, AV_LOG_ERROR, "Unable to set the AOT %d: %s\n",
140 aot, aac_get_error(err));
141 goto error;
142 }
143
144 if (aot == FF_PROFILE_AAC_ELD + 1 && s->eld_sbr) {
145 if ((err = aacEncoder_SetParam(s->handle, AACENC_SBR_MODE,
146 1)) != AACENC_OK) {
147 av_log(avctx, AV_LOG_ERROR, "Unable to enable SBR for ELD: %s\n",
148 aac_get_error(err));
149 goto error;
150 }
151 }
152
153 if ((err = aacEncoder_SetParam(s->handle, AACENC_SAMPLERATE,
154 avctx->sample_rate)) != AACENC_OK) {
155 av_log(avctx, AV_LOG_ERROR, "Unable to set the sample rate %d: %s\n",
156 avctx->sample_rate, aac_get_error(err));
157 goto error;
158 }
159
160 switch (avctx->channels) {
161 case 1: mode = MODE_1; sce = 1; cpe = 0; break;
7e929dac
MS
162 case 2:
163#if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0
164 // (profile + 1) to map from profile range to AOT range
165 if (aot == FF_PROFILE_AAC_ELD + 1 && s->eld_v2) {
166 if ((err = aacEncoder_SetParam(s->handle, AACENC_CHANNELMODE,
167 128)) != AACENC_OK) {
168 av_log(avctx, AV_LOG_ERROR, "Unable to enable ELDv2: %s\n",
169 aac_get_error(err));
170 goto error;
171 } else {
172 mode = MODE_212;
173 sce = 1;
174 cpe = 0;
175 }
176 } else
177#endif
178 {
179 mode = MODE_2;
180 sce = 0;
181 cpe = 1;
182 }
183 break;
37eeb5e2
MS
184 case 3: mode = MODE_1_2; sce = 1; cpe = 1; break;
185 case 4: mode = MODE_1_2_1; sce = 2; cpe = 1; break;
186 case 5: mode = MODE_1_2_2; sce = 1; cpe = 2; break;
187 case 6: mode = MODE_1_2_2_1; sce = 2; cpe = 2; break;
15fa856b
JF
188/* The version macro is introduced the same time as the 7.1 support, so this
189 should suffice. */
ffb9b7a6 190#if FDKENC_VER_AT_LEAST(3, 4) // 3.4.12
15fa856b
JF
191 case 8:
192 sce = 2;
193 cpe = 3;
194 if (avctx->channel_layout == AV_CH_LAYOUT_7POINT1) {
195 mode = MODE_7_1_REAR_SURROUND;
196 } else {
197 // MODE_1_2_2_2_1 and MODE_7_1_FRONT_CENTER use the same channel layout
198 mode = MODE_7_1_FRONT_CENTER;
199 }
200 break;
201#endif
37eeb5e2
MS
202 default:
203 av_log(avctx, AV_LOG_ERROR,
204 "Unsupported number of channels %d\n", avctx->channels);
205 goto error;
206 }
207
208 if ((err = aacEncoder_SetParam(s->handle, AACENC_CHANNELMODE,
209 mode)) != AACENC_OK) {
210 av_log(avctx, AV_LOG_ERROR,
211 "Unable to set channel mode %d: %s\n", mode, aac_get_error(err));
212 goto error;
213 }
214
215 if ((err = aacEncoder_SetParam(s->handle, AACENC_CHANNELORDER,
216 1)) != AACENC_OK) {
217 av_log(avctx, AV_LOG_ERROR,
218 "Unable to set wav channel order %d: %s\n",
219 mode, aac_get_error(err));
220 goto error;
221 }
222
7c6eb0a1 223 if (avctx->flags & AV_CODEC_FLAG_QSCALE || s->vbr) {
375bff70 224 int mode = s->vbr ? s->vbr : avctx->global_quality;
37eeb5e2
MS
225 if (mode < 1 || mode > 5) {
226 av_log(avctx, AV_LOG_WARNING,
227 "VBR quality %d out of range, should be 1-5\n", mode);
228 mode = av_clip(mode, 1, 5);
229 }
a10190dc
MS
230 av_log(avctx, AV_LOG_WARNING,
231 "Note, the VBR setting is unsupported and only works with "
232 "some parameter combinations\n");
37eeb5e2
MS
233 if ((err = aacEncoder_SetParam(s->handle, AACENC_BITRATEMODE,
234 mode)) != AACENC_OK) {
235 av_log(avctx, AV_LOG_ERROR, "Unable to set the VBR bitrate mode %d: %s\n",
236 mode, aac_get_error(err));
237 goto error;
238 }
239 } else {
240 if (avctx->bit_rate <= 0) {
241 if (avctx->profile == FF_PROFILE_AAC_HE_V2) {
242 sce = 1;
243 cpe = 0;
244 }
245 avctx->bit_rate = (96*sce + 128*cpe) * avctx->sample_rate / 44;
246 if (avctx->profile == FF_PROFILE_AAC_HE ||
247 avctx->profile == FF_PROFILE_AAC_HE_V2 ||
95d52464 248 avctx->profile == FF_PROFILE_MPEG2_AAC_HE ||
37eeb5e2
MS
249 s->eld_sbr)
250 avctx->bit_rate /= 2;
251 }
252 if ((err = aacEncoder_SetParam(s->handle, AACENC_BITRATE,
253 avctx->bit_rate)) != AACENC_OK) {
254 av_log(avctx, AV_LOG_ERROR, "Unable to set the bitrate %d: %s\n",
255 avctx->bit_rate, aac_get_error(err));
256 goto error;
257 }
258 }
259
260 /* Choose bitstream format - if global header is requested, use
261 * raw access units, otherwise use ADTS. */
262 if ((err = aacEncoder_SetParam(s->handle, AACENC_TRANSMUX,
b9302677
MS
263 avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER ? TT_MP4_RAW :
264 s->latm ? TT_MP4_LOAS : TT_MP4_ADTS)) != AACENC_OK) {
37eeb5e2
MS
265 av_log(avctx, AV_LOG_ERROR, "Unable to set the transmux format: %s\n",
266 aac_get_error(err));
267 goto error;
268 }
269
160a27c5
KK
270 if (s->latm && s->header_period) {
271 if ((err = aacEncoder_SetParam(s->handle, AACENC_HEADER_PERIOD,
272 s->header_period)) != AACENC_OK) {
273 av_log(avctx, AV_LOG_ERROR, "Unable to set header period: %s\n",
274 aac_get_error(err));
275 goto error;
276 }
277 }
278
37eeb5e2
MS
279 /* If no signaling mode is chosen, use explicit hierarchical signaling
280 * if using mp4 mode (raw access units, with global header) and
281 * implicit signaling if using ADTS. */
282 if (s->signaling < 0)
7c6eb0a1 283 s->signaling = avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER ? 2 : 0;
37eeb5e2
MS
284
285 if ((err = aacEncoder_SetParam(s->handle, AACENC_SIGNALING_MODE,
286 s->signaling)) != AACENC_OK) {
287 av_log(avctx, AV_LOG_ERROR, "Unable to set signaling mode %d: %s\n",
288 s->signaling, aac_get_error(err));
289 goto error;
290 }
291
292 if ((err = aacEncoder_SetParam(s->handle, AACENC_AFTERBURNER,
293 s->afterburner)) != AACENC_OK) {
294 av_log(avctx, AV_LOG_ERROR, "Unable to set afterburner to %d: %s\n",
295 s->afterburner, aac_get_error(err));
296 goto error;
297 }
298
7548831c 299 if (avctx->cutoff > 0) {
375ef652 300 if (avctx->cutoff < (avctx->sample_rate + 255) >> 8 || avctx->cutoff > 20000) {
c37c383e
MA
301 av_log(avctx, AV_LOG_ERROR, "cutoff valid range is %d-20000\n",
302 (avctx->sample_rate + 255) >> 8);
303 goto error;
304 }
7548831c
MS
305 if ((err = aacEncoder_SetParam(s->handle, AACENC_BANDWIDTH,
306 avctx->cutoff)) != AACENC_OK) {
511cf612 307 av_log(avctx, AV_LOG_ERROR, "Unable to set the encoder bandwidth to %d: %s\n",
7548831c
MS
308 avctx->cutoff, aac_get_error(err));
309 goto error;
310 }
311 }
312
37eeb5e2
MS
313 if ((err = aacEncEncode(s->handle, NULL, NULL, NULL, NULL)) != AACENC_OK) {
314 av_log(avctx, AV_LOG_ERROR, "Unable to initialize the encoder: %s\n",
315 aac_get_error(err));
316 return AVERROR(EINVAL);
317 }
318
319 if ((err = aacEncInfo(s->handle, &info)) != AACENC_OK) {
320 av_log(avctx, AV_LOG_ERROR, "Unable to get encoder info: %s\n",
321 aac_get_error(err));
322 goto error;
323 }
324
37eeb5e2 325 avctx->frame_size = info.frameLength;
ffb9b7a6 326#if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0
141c960e
MS
327 avctx->initial_padding = info.nDelay;
328#else
2df0c32e 329 avctx->initial_padding = info.encoderDelay;
141c960e 330#endif
37eeb5e2
MS
331 ff_af_queue_init(avctx, &s->afq);
332
7c6eb0a1 333 if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
37eeb5e2
MS
334 avctx->extradata_size = info.confSize;
335 avctx->extradata = av_mallocz(avctx->extradata_size +
059a9348 336 AV_INPUT_BUFFER_PADDING_SIZE);
37eeb5e2
MS
337 if (!avctx->extradata) {
338 ret = AVERROR(ENOMEM);
339 goto error;
340 }
341
342 memcpy(avctx->extradata, info.confBuf, info.confSize);
343 }
344 return 0;
345error:
346 aac_encode_close(avctx);
347 return ret;
348}
349
350static int aac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
351 const AVFrame *frame, int *got_packet_ptr)
352{
353 AACContext *s = avctx->priv_data;
354 AACENC_BufDesc in_buf = { 0 }, out_buf = { 0 };
355 AACENC_InArgs in_args = { 0 };
356 AACENC_OutArgs out_args = { 0 };
357 int in_buffer_identifier = IN_AUDIO_DATA;
358 int in_buffer_size, in_buffer_element_size;
359 int out_buffer_identifier = OUT_BITSTREAM_DATA;
360 int out_buffer_size, out_buffer_element_size;
361 void *in_ptr, *out_ptr;
362 int ret;
141c960e 363 uint8_t dummy_buf[1];
37eeb5e2
MS
364 AACENC_ERROR err;
365
366 /* handle end-of-stream small frame and flushing */
367 if (!frame) {
141c960e
MS
368 /* Must be a non-null pointer, even if it's a dummy. We could use
369 * the address of anything else on the stack as well. */
370 in_ptr = dummy_buf;
371 in_buffer_size = 0;
372
37eeb5e2
MS
373 in_args.numInSamples = -1;
374 } else {
141c960e
MS
375 in_ptr = frame->data[0];
376 in_buffer_size = 2 * avctx->channels * frame->nb_samples;
37eeb5e2 377
141c960e 378 in_args.numInSamples = avctx->channels * frame->nb_samples;
37eeb5e2
MS
379
380 /* add current frame to the queue */
1d7ffd06 381 if ((ret = ff_af_queue_add(&s->afq, frame)) < 0)
37eeb5e2
MS
382 return ret;
383 }
384
141c960e
MS
385 in_buffer_element_size = 2;
386 in_buf.numBufs = 1;
387 in_buf.bufs = &in_ptr;
388 in_buf.bufferIdentifiers = &in_buffer_identifier;
389 in_buf.bufSizes = &in_buffer_size;
390 in_buf.bufElSizes = &in_buffer_element_size;
391
37eeb5e2
MS
392 /* The maximum packet size is 6144 bits aka 768 bytes per channel. */
393 if ((ret = ff_alloc_packet(avpkt, FFMAX(8192, 768 * avctx->channels)))) {
394 av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");
395 return ret;
396 }
397
398 out_ptr = avpkt->data;
399 out_buffer_size = avpkt->size;
400 out_buffer_element_size = 1;
401 out_buf.numBufs = 1;
402 out_buf.bufs = &out_ptr;
403 out_buf.bufferIdentifiers = &out_buffer_identifier;
404 out_buf.bufSizes = &out_buffer_size;
405 out_buf.bufElSizes = &out_buffer_element_size;
406
407 if ((err = aacEncEncode(s->handle, &in_buf, &out_buf, &in_args,
408 &out_args)) != AACENC_OK) {
409 if (!frame && err == AACENC_ENCODE_EOF)
410 return 0;
411 av_log(avctx, AV_LOG_ERROR, "Unable to encode frame: %s\n",
412 aac_get_error(err));
413 return AVERROR(EINVAL);
414 }
415
416 if (!out_args.numOutBytes)
417 return 0;
418
419 /* Get the next frame pts & duration */
420 ff_af_queue_remove(&s->afq, avctx->frame_size, &avpkt->pts,
421 &avpkt->duration);
422
423 avpkt->size = out_args.numOutBytes;
424 *got_packet_ptr = 1;
425 return 0;
426}
427
428static const AVProfile profiles[] = {
429 { FF_PROFILE_AAC_LOW, "LC" },
430 { FF_PROFILE_AAC_HE, "HE-AAC" },
431 { FF_PROFILE_AAC_HE_V2, "HE-AACv2" },
432 { FF_PROFILE_AAC_LD, "LD" },
433 { FF_PROFILE_AAC_ELD, "ELD" },
434 { FF_PROFILE_UNKNOWN },
435};
436
437static const AVCodecDefault aac_encode_defaults[] = {
438 { "b", "0" },
439 { NULL }
440};
441
442static const uint64_t aac_channel_layout[] = {
443 AV_CH_LAYOUT_MONO,
444 AV_CH_LAYOUT_STEREO,
445 AV_CH_LAYOUT_SURROUND,
446 AV_CH_LAYOUT_4POINT0,
447 AV_CH_LAYOUT_5POINT0_BACK,
448 AV_CH_LAYOUT_5POINT1_BACK,
ffb9b7a6 449#if FDKENC_VER_AT_LEAST(3, 4) // 3.4.12
15fa856b
JF
450 AV_CH_LAYOUT_7POINT1_WIDE_BACK,
451 AV_CH_LAYOUT_7POINT1,
452#endif
37eeb5e2
MS
453 0,
454};
455
94a69dee
NC
456static const int aac_sample_rates[] = {
457 96000, 88200, 64000, 48000, 44100, 32000,
458 24000, 22050, 16000, 12000, 11025, 8000, 0
459};
460
37eeb5e2 461AVCodec ff_libfdk_aac_encoder = {
c8ba8be2 462 .name = "libfdk_aac",
b2bed932 463 .long_name = NULL_IF_CONFIG_SMALL("Fraunhofer FDK AAC"),
c8ba8be2
NC
464 .type = AVMEDIA_TYPE_AUDIO,
465 .id = AV_CODEC_ID_AAC,
466 .priv_data_size = sizeof(AACContext),
467 .init = aac_encode_init,
468 .encode2 = aac_encode_frame,
469 .close = aac_encode_close,
def97856 470 .capabilities = AV_CODEC_CAP_SMALL_LAST_FRAME | AV_CODEC_CAP_DELAY,
c8ba8be2
NC
471 .sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
472 AV_SAMPLE_FMT_NONE },
c8ba8be2
NC
473 .priv_class = &aac_enc_class,
474 .defaults = aac_encode_defaults,
475 .profiles = profiles,
94a69dee 476 .supported_samplerates = aac_sample_rates,
c8ba8be2 477 .channel_layouts = aac_channel_layout,
47687a2f 478 .wrapper_name = "libfdk",
37eeb5e2 479};