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2ba45a60 DM |
1 | /* |
2 | * Copyright (C) 2011-2013 Michael Niedermayer (michaelni@gmx.at) | |
3 | * | |
4 | * This file is part of libswresample | |
5 | * | |
6 | * libswresample is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2.1 of the License, or (at your option) any later version. | |
10 | * | |
11 | * libswresample is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
17 | * License along with libswresample; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include "libavutil/opt.h" | |
22 | #include "swresample_internal.h" | |
23 | #include "audioconvert.h" | |
24 | #include "libavutil/avassert.h" | |
25 | #include "libavutil/channel_layout.h" | |
26 | ||
27 | #include <float.h> | |
28 | ||
29 | #define ALIGN 32 | |
30 | ||
092a9121 DM |
31 | #include "libavutil/ffversion.h" |
32 | const char swr_ffversion[] = "FFmpeg version " FFMPEG_VERSION; | |
33 | ||
2ba45a60 DM |
34 | unsigned swresample_version(void) |
35 | { | |
36 | av_assert0(LIBSWRESAMPLE_VERSION_MICRO >= 100); | |
37 | return LIBSWRESAMPLE_VERSION_INT; | |
38 | } | |
39 | ||
40 | const char *swresample_configuration(void) | |
41 | { | |
42 | return FFMPEG_CONFIGURATION; | |
43 | } | |
44 | ||
45 | const char *swresample_license(void) | |
46 | { | |
47 | #define LICENSE_PREFIX "libswresample license: " | |
48 | return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1; | |
49 | } | |
50 | ||
51 | int swr_set_channel_mapping(struct SwrContext *s, const int *channel_map){ | |
52 | if(!s || s->in_convert) // s needs to be allocated but not initialized | |
53 | return AVERROR(EINVAL); | |
54 | s->channel_map = channel_map; | |
55 | return 0; | |
56 | } | |
57 | ||
58 | struct SwrContext *swr_alloc_set_opts(struct SwrContext *s, | |
59 | int64_t out_ch_layout, enum AVSampleFormat out_sample_fmt, int out_sample_rate, | |
60 | int64_t in_ch_layout, enum AVSampleFormat in_sample_fmt, int in_sample_rate, | |
61 | int log_offset, void *log_ctx){ | |
62 | if(!s) s= swr_alloc(); | |
63 | if(!s) return NULL; | |
64 | ||
65 | s->log_level_offset= log_offset; | |
66 | s->log_ctx= log_ctx; | |
67 | ||
68 | if (av_opt_set_int(s, "ocl", out_ch_layout, 0) < 0) | |
69 | goto fail; | |
70 | ||
71 | if (av_opt_set_int(s, "osf", out_sample_fmt, 0) < 0) | |
72 | goto fail; | |
73 | ||
74 | if (av_opt_set_int(s, "osr", out_sample_rate, 0) < 0) | |
75 | goto fail; | |
76 | ||
77 | if (av_opt_set_int(s, "icl", in_ch_layout, 0) < 0) | |
78 | goto fail; | |
79 | ||
80 | if (av_opt_set_int(s, "isf", in_sample_fmt, 0) < 0) | |
81 | goto fail; | |
82 | ||
83 | if (av_opt_set_int(s, "isr", in_sample_rate, 0) < 0) | |
84 | goto fail; | |
85 | ||
86 | if (av_opt_set_int(s, "tsf", AV_SAMPLE_FMT_NONE, 0) < 0) | |
87 | goto fail; | |
88 | ||
89 | if (av_opt_set_int(s, "ich", av_get_channel_layout_nb_channels(s-> in_ch_layout), 0) < 0) | |
90 | goto fail; | |
91 | ||
92 | if (av_opt_set_int(s, "och", av_get_channel_layout_nb_channels(s->out_ch_layout), 0) < 0) | |
93 | goto fail; | |
94 | ||
95 | av_opt_set_int(s, "uch", 0, 0); | |
96 | return s; | |
97 | fail: | |
98 | av_log(s, AV_LOG_ERROR, "Failed to set option\n"); | |
99 | swr_free(&s); | |
100 | return NULL; | |
101 | } | |
102 | ||
103 | static void set_audiodata_fmt(AudioData *a, enum AVSampleFormat fmt){ | |
104 | a->fmt = fmt; | |
105 | a->bps = av_get_bytes_per_sample(fmt); | |
106 | a->planar= av_sample_fmt_is_planar(fmt); | |
107 | if (a->ch_count == 1) | |
108 | a->planar = 1; | |
109 | } | |
110 | ||
111 | static void free_temp(AudioData *a){ | |
112 | av_free(a->data); | |
113 | memset(a, 0, sizeof(*a)); | |
114 | } | |
115 | ||
116 | static void clear_context(SwrContext *s){ | |
117 | s->in_buffer_index= 0; | |
118 | s->in_buffer_count= 0; | |
119 | s->resample_in_constraint= 0; | |
120 | memset(s->in.ch, 0, sizeof(s->in.ch)); | |
121 | memset(s->out.ch, 0, sizeof(s->out.ch)); | |
122 | free_temp(&s->postin); | |
123 | free_temp(&s->midbuf); | |
124 | free_temp(&s->preout); | |
125 | free_temp(&s->in_buffer); | |
126 | free_temp(&s->silence); | |
127 | free_temp(&s->drop_temp); | |
128 | free_temp(&s->dither.noise); | |
129 | free_temp(&s->dither.temp); | |
130 | swri_audio_convert_free(&s-> in_convert); | |
131 | swri_audio_convert_free(&s->out_convert); | |
132 | swri_audio_convert_free(&s->full_convert); | |
133 | swri_rematrix_free(s); | |
134 | ||
135 | s->flushed = 0; | |
136 | } | |
137 | ||
138 | av_cold void swr_free(SwrContext **ss){ | |
139 | SwrContext *s= *ss; | |
140 | if(s){ | |
141 | clear_context(s); | |
142 | if (s->resampler) | |
143 | s->resampler->free(&s->resample); | |
144 | } | |
145 | ||
146 | av_freep(ss); | |
147 | } | |
148 | ||
149 | av_cold void swr_close(SwrContext *s){ | |
150 | clear_context(s); | |
151 | } | |
152 | ||
153 | av_cold int swr_init(struct SwrContext *s){ | |
154 | int ret; | |
155 | ||
156 | clear_context(s); | |
157 | ||
158 | if(s-> in_sample_fmt >= AV_SAMPLE_FMT_NB){ | |
159 | av_log(s, AV_LOG_ERROR, "Requested input sample format %d is invalid\n", s->in_sample_fmt); | |
160 | return AVERROR(EINVAL); | |
161 | } | |
162 | if(s->out_sample_fmt >= AV_SAMPLE_FMT_NB){ | |
163 | av_log(s, AV_LOG_ERROR, "Requested output sample format %d is invalid\n", s->out_sample_fmt); | |
164 | return AVERROR(EINVAL); | |
165 | } | |
166 | ||
167 | if(av_get_channel_layout_nb_channels(s-> in_ch_layout) > SWR_CH_MAX) { | |
168 | av_log(s, AV_LOG_WARNING, "Input channel layout 0x%"PRIx64" is invalid or unsupported.\n", s-> in_ch_layout); | |
169 | s->in_ch_layout = 0; | |
170 | } | |
171 | ||
172 | if(av_get_channel_layout_nb_channels(s->out_ch_layout) > SWR_CH_MAX) { | |
173 | av_log(s, AV_LOG_WARNING, "Output channel layout 0x%"PRIx64" is invalid or unsupported.\n", s->out_ch_layout); | |
174 | s->out_ch_layout = 0; | |
175 | } | |
176 | ||
177 | switch(s->engine){ | |
178 | #if CONFIG_LIBSOXR | |
179 | extern struct Resampler const soxr_resampler; | |
180 | case SWR_ENGINE_SOXR: s->resampler = &soxr_resampler; break; | |
181 | #endif | |
182 | case SWR_ENGINE_SWR : s->resampler = &swri_resampler; break; | |
183 | default: | |
184 | av_log(s, AV_LOG_ERROR, "Requested resampling engine is unavailable\n"); | |
185 | return AVERROR(EINVAL); | |
186 | } | |
187 | ||
188 | if(!s->used_ch_count) | |
189 | s->used_ch_count= s->in.ch_count; | |
190 | ||
191 | if(s->used_ch_count && s-> in_ch_layout && s->used_ch_count != av_get_channel_layout_nb_channels(s-> in_ch_layout)){ | |
192 | av_log(s, AV_LOG_WARNING, "Input channel layout has a different number of channels than the number of used channels, ignoring layout\n"); | |
193 | s-> in_ch_layout= 0; | |
194 | } | |
195 | ||
196 | if(!s-> in_ch_layout) | |
197 | s-> in_ch_layout= av_get_default_channel_layout(s->used_ch_count); | |
198 | if(!s->out_ch_layout) | |
199 | s->out_ch_layout= av_get_default_channel_layout(s->out.ch_count); | |
200 | ||
201 | s->rematrix= s->out_ch_layout !=s->in_ch_layout || s->rematrix_volume!=1.0 || | |
202 | s->rematrix_custom; | |
203 | ||
204 | if(s->int_sample_fmt == AV_SAMPLE_FMT_NONE){ | |
205 | if(av_get_planar_sample_fmt(s->in_sample_fmt) <= AV_SAMPLE_FMT_S16P){ | |
206 | s->int_sample_fmt= AV_SAMPLE_FMT_S16P; | |
207 | }else if( av_get_planar_sample_fmt(s-> in_sample_fmt) == AV_SAMPLE_FMT_S32P | |
208 | && av_get_planar_sample_fmt(s->out_sample_fmt) == AV_SAMPLE_FMT_S32P | |
209 | && !s->rematrix | |
210 | && s->engine != SWR_ENGINE_SOXR){ | |
211 | s->int_sample_fmt= AV_SAMPLE_FMT_S32P; | |
212 | }else if(av_get_planar_sample_fmt(s->in_sample_fmt) <= AV_SAMPLE_FMT_FLTP){ | |
213 | s->int_sample_fmt= AV_SAMPLE_FMT_FLTP; | |
214 | }else{ | |
215 | av_log(s, AV_LOG_DEBUG, "Using double precision mode\n"); | |
216 | s->int_sample_fmt= AV_SAMPLE_FMT_DBLP; | |
217 | } | |
218 | } | |
219 | ||
220 | if( s->int_sample_fmt != AV_SAMPLE_FMT_S16P | |
221 | &&s->int_sample_fmt != AV_SAMPLE_FMT_S32P | |
222 | &&s->int_sample_fmt != AV_SAMPLE_FMT_FLTP | |
223 | &&s->int_sample_fmt != AV_SAMPLE_FMT_DBLP){ | |
224 | av_log(s, AV_LOG_ERROR, "Requested sample format %s is not supported internally, S16/S32/FLT/DBL is supported\n", av_get_sample_fmt_name(s->int_sample_fmt)); | |
225 | return AVERROR(EINVAL); | |
226 | } | |
227 | ||
228 | set_audiodata_fmt(&s-> in, s-> in_sample_fmt); | |
229 | set_audiodata_fmt(&s->out, s->out_sample_fmt); | |
230 | ||
231 | if (s->firstpts_in_samples != AV_NOPTS_VALUE) { | |
232 | if (!s->async && s->min_compensation >= FLT_MAX/2) | |
233 | s->async = 1; | |
234 | s->firstpts = | |
235 | s->outpts = s->firstpts_in_samples * s->out_sample_rate; | |
236 | } else | |
237 | s->firstpts = AV_NOPTS_VALUE; | |
238 | ||
239 | if (s->async) { | |
240 | if (s->min_compensation >= FLT_MAX/2) | |
241 | s->min_compensation = 0.001; | |
242 | if (s->async > 1.0001) { | |
243 | s->max_soft_compensation = s->async / (double) s->in_sample_rate; | |
244 | } | |
245 | } | |
246 | ||
247 | if (s->out_sample_rate!=s->in_sample_rate || (s->flags & SWR_FLAG_RESAMPLE)){ | |
248 | s->resample = s->resampler->init(s->resample, s->out_sample_rate, s->in_sample_rate, s->filter_size, s->phase_shift, s->linear_interp, s->cutoff, s->int_sample_fmt, s->filter_type, s->kaiser_beta, s->precision, s->cheby); | |
249 | }else | |
250 | s->resampler->free(&s->resample); | |
251 | if( s->int_sample_fmt != AV_SAMPLE_FMT_S16P | |
252 | && s->int_sample_fmt != AV_SAMPLE_FMT_S32P | |
253 | && s->int_sample_fmt != AV_SAMPLE_FMT_FLTP | |
254 | && s->int_sample_fmt != AV_SAMPLE_FMT_DBLP | |
255 | && s->resample){ | |
256 | av_log(s, AV_LOG_ERROR, "Resampling only supported with internal s16/s32/flt/dbl\n"); | |
257 | return -1; | |
258 | } | |
259 | ||
260 | #define RSC 1 //FIXME finetune | |
261 | if(!s-> in.ch_count) | |
262 | s-> in.ch_count= av_get_channel_layout_nb_channels(s-> in_ch_layout); | |
263 | if(!s->used_ch_count) | |
264 | s->used_ch_count= s->in.ch_count; | |
265 | if(!s->out.ch_count) | |
266 | s->out.ch_count= av_get_channel_layout_nb_channels(s->out_ch_layout); | |
267 | ||
268 | if(!s-> in.ch_count){ | |
269 | av_assert0(!s->in_ch_layout); | |
270 | av_log(s, AV_LOG_ERROR, "Input channel count and layout are unset\n"); | |
271 | return -1; | |
272 | } | |
273 | ||
274 | if ((!s->out_ch_layout || !s->in_ch_layout) && s->used_ch_count != s->out.ch_count && !s->rematrix_custom) { | |
275 | char l1[1024], l2[1024]; | |
276 | av_get_channel_layout_string(l1, sizeof(l1), s-> in.ch_count, s-> in_ch_layout); | |
277 | av_get_channel_layout_string(l2, sizeof(l2), s->out.ch_count, s->out_ch_layout); | |
278 | av_log(s, AV_LOG_ERROR, "Rematrix is needed between %s and %s " | |
279 | "but there is not enough information to do it\n", l1, l2); | |
280 | return -1; | |
281 | } | |
282 | ||
283 | av_assert0(s->used_ch_count); | |
284 | av_assert0(s->out.ch_count); | |
285 | s->resample_first= RSC*s->out.ch_count/s->in.ch_count - RSC < s->out_sample_rate/(float)s-> in_sample_rate - 1.0; | |
286 | ||
287 | s->in_buffer= s->in; | |
288 | s->silence = s->in; | |
289 | s->drop_temp= s->out; | |
290 | ||
291 | if(!s->resample && !s->rematrix && !s->channel_map && !s->dither.method){ | |
292 | s->full_convert = swri_audio_convert_alloc(s->out_sample_fmt, | |
293 | s-> in_sample_fmt, s-> in.ch_count, NULL, 0); | |
294 | return 0; | |
295 | } | |
296 | ||
297 | s->in_convert = swri_audio_convert_alloc(s->int_sample_fmt, | |
298 | s-> in_sample_fmt, s->used_ch_count, s->channel_map, 0); | |
299 | s->out_convert= swri_audio_convert_alloc(s->out_sample_fmt, | |
300 | s->int_sample_fmt, s->out.ch_count, NULL, 0); | |
301 | ||
302 | if (!s->in_convert || !s->out_convert) | |
303 | return AVERROR(ENOMEM); | |
304 | ||
305 | s->postin= s->in; | |
306 | s->preout= s->out; | |
307 | s->midbuf= s->in; | |
308 | ||
309 | if(s->channel_map){ | |
310 | s->postin.ch_count= | |
311 | s->midbuf.ch_count= s->used_ch_count; | |
312 | if(s->resample) | |
313 | s->in_buffer.ch_count= s->used_ch_count; | |
314 | } | |
315 | if(!s->resample_first){ | |
316 | s->midbuf.ch_count= s->out.ch_count; | |
317 | if(s->resample) | |
318 | s->in_buffer.ch_count = s->out.ch_count; | |
319 | } | |
320 | ||
321 | set_audiodata_fmt(&s->postin, s->int_sample_fmt); | |
322 | set_audiodata_fmt(&s->midbuf, s->int_sample_fmt); | |
323 | set_audiodata_fmt(&s->preout, s->int_sample_fmt); | |
324 | ||
325 | if(s->resample){ | |
326 | set_audiodata_fmt(&s->in_buffer, s->int_sample_fmt); | |
327 | } | |
328 | ||
329 | if ((ret = swri_dither_init(s, s->out_sample_fmt, s->int_sample_fmt)) < 0) | |
330 | return ret; | |
331 | ||
332 | if(s->rematrix || s->dither.method) | |
333 | return swri_rematrix_init(s); | |
334 | ||
335 | return 0; | |
336 | } | |
337 | ||
338 | int swri_realloc_audio(AudioData *a, int count){ | |
339 | int i, countb; | |
340 | AudioData old; | |
341 | ||
342 | if(count < 0 || count > INT_MAX/2/a->bps/a->ch_count) | |
343 | return AVERROR(EINVAL); | |
344 | ||
345 | if(a->count >= count) | |
346 | return 0; | |
347 | ||
348 | count*=2; | |
349 | ||
350 | countb= FFALIGN(count*a->bps, ALIGN); | |
351 | old= *a; | |
352 | ||
353 | av_assert0(a->bps); | |
354 | av_assert0(a->ch_count); | |
355 | ||
356 | a->data= av_mallocz(countb*a->ch_count); | |
357 | if(!a->data) | |
358 | return AVERROR(ENOMEM); | |
359 | for(i=0; i<a->ch_count; i++){ | |
360 | a->ch[i]= a->data + i*(a->planar ? countb : a->bps); | |
361 | if(a->planar) memcpy(a->ch[i], old.ch[i], a->count*a->bps); | |
362 | } | |
363 | if(!a->planar) memcpy(a->ch[0], old.ch[0], a->count*a->ch_count*a->bps); | |
364 | av_freep(&old.data); | |
365 | a->count= count; | |
366 | ||
367 | return 1; | |
368 | } | |
369 | ||
370 | static void copy(AudioData *out, AudioData *in, | |
371 | int count){ | |
372 | av_assert0(out->planar == in->planar); | |
373 | av_assert0(out->bps == in->bps); | |
374 | av_assert0(out->ch_count == in->ch_count); | |
375 | if(out->planar){ | |
376 | int ch; | |
377 | for(ch=0; ch<out->ch_count; ch++) | |
378 | memcpy(out->ch[ch], in->ch[ch], count*out->bps); | |
379 | }else | |
380 | memcpy(out->ch[0], in->ch[0], count*out->ch_count*out->bps); | |
381 | } | |
382 | ||
383 | static void fill_audiodata(AudioData *out, uint8_t *in_arg [SWR_CH_MAX]){ | |
384 | int i; | |
385 | if(!in_arg){ | |
386 | memset(out->ch, 0, sizeof(out->ch)); | |
387 | }else if(out->planar){ | |
388 | for(i=0; i<out->ch_count; i++) | |
389 | out->ch[i]= in_arg[i]; | |
390 | }else{ | |
391 | for(i=0; i<out->ch_count; i++) | |
392 | out->ch[i]= in_arg[0] + i*out->bps; | |
393 | } | |
394 | } | |
395 | ||
396 | static void reversefill_audiodata(AudioData *out, uint8_t *in_arg [SWR_CH_MAX]){ | |
397 | int i; | |
398 | if(out->planar){ | |
399 | for(i=0; i<out->ch_count; i++) | |
400 | in_arg[i]= out->ch[i]; | |
401 | }else{ | |
402 | in_arg[0]= out->ch[0]; | |
403 | } | |
404 | } | |
405 | ||
406 | /** | |
407 | * | |
408 | * out may be equal in. | |
409 | */ | |
410 | static void buf_set(AudioData *out, AudioData *in, int count){ | |
411 | int ch; | |
412 | if(in->planar){ | |
413 | for(ch=0; ch<out->ch_count; ch++) | |
414 | out->ch[ch]= in->ch[ch] + count*out->bps; | |
415 | }else{ | |
416 | for(ch=out->ch_count-1; ch>=0; ch--) | |
417 | out->ch[ch]= in->ch[0] + (ch + count*out->ch_count) * out->bps; | |
418 | } | |
419 | } | |
420 | ||
421 | /** | |
422 | * | |
423 | * @return number of samples output per channel | |
424 | */ | |
425 | static int resample(SwrContext *s, AudioData *out_param, int out_count, | |
426 | const AudioData * in_param, int in_count){ | |
427 | AudioData in, out, tmp; | |
428 | int ret_sum=0; | |
429 | int border=0; | |
430 | int padless = ARCH_X86 && s->engine == SWR_ENGINE_SWR ? 7 : 0; | |
431 | ||
432 | av_assert1(s->in_buffer.ch_count == in_param->ch_count); | |
433 | av_assert1(s->in_buffer.planar == in_param->planar); | |
434 | av_assert1(s->in_buffer.fmt == in_param->fmt); | |
435 | ||
436 | tmp=out=*out_param; | |
437 | in = *in_param; | |
438 | ||
439 | border = s->resampler->invert_initial_buffer(s->resample, &s->in_buffer, | |
440 | &in, in_count, &s->in_buffer_index, &s->in_buffer_count); | |
f6fa7814 DM |
441 | if (border == INT_MAX) { |
442 | return 0; | |
443 | } else if (border < 0) { | |
444 | return border; | |
445 | } else if (border) { | |
446 | buf_set(&in, &in, border); | |
447 | in_count -= border; | |
448 | s->resample_in_constraint = 0; | |
449 | } | |
2ba45a60 DM |
450 | |
451 | do{ | |
452 | int ret, size, consumed; | |
453 | if(!s->resample_in_constraint && s->in_buffer_count){ | |
454 | buf_set(&tmp, &s->in_buffer, s->in_buffer_index); | |
455 | ret= s->resampler->multiple_resample(s->resample, &out, out_count, &tmp, s->in_buffer_count, &consumed); | |
456 | out_count -= ret; | |
457 | ret_sum += ret; | |
458 | buf_set(&out, &out, ret); | |
459 | s->in_buffer_count -= consumed; | |
460 | s->in_buffer_index += consumed; | |
461 | ||
462 | if(!in_count) | |
463 | break; | |
464 | if(s->in_buffer_count <= border){ | |
465 | buf_set(&in, &in, -s->in_buffer_count); | |
466 | in_count += s->in_buffer_count; | |
467 | s->in_buffer_count=0; | |
468 | s->in_buffer_index=0; | |
469 | border = 0; | |
470 | } | |
471 | } | |
472 | ||
473 | if((s->flushed || in_count > padless) && !s->in_buffer_count){ | |
474 | s->in_buffer_index=0; | |
475 | ret= s->resampler->multiple_resample(s->resample, &out, out_count, &in, FFMAX(in_count-padless, 0), &consumed); | |
476 | out_count -= ret; | |
477 | ret_sum += ret; | |
478 | buf_set(&out, &out, ret); | |
479 | in_count -= consumed; | |
480 | buf_set(&in, &in, consumed); | |
481 | } | |
482 | ||
483 | //TODO is this check sane considering the advanced copy avoidance below | |
484 | size= s->in_buffer_index + s->in_buffer_count + in_count; | |
485 | if( size > s->in_buffer.count | |
486 | && s->in_buffer_count + in_count <= s->in_buffer_index){ | |
487 | buf_set(&tmp, &s->in_buffer, s->in_buffer_index); | |
488 | copy(&s->in_buffer, &tmp, s->in_buffer_count); | |
489 | s->in_buffer_index=0; | |
490 | }else | |
491 | if((ret=swri_realloc_audio(&s->in_buffer, size)) < 0) | |
492 | return ret; | |
493 | ||
494 | if(in_count){ | |
495 | int count= in_count; | |
496 | if(s->in_buffer_count && s->in_buffer_count+2 < count && out_count) count= s->in_buffer_count+2; | |
497 | ||
498 | buf_set(&tmp, &s->in_buffer, s->in_buffer_index + s->in_buffer_count); | |
499 | copy(&tmp, &in, /*in_*/count); | |
500 | s->in_buffer_count += count; | |
501 | in_count -= count; | |
502 | border += count; | |
503 | buf_set(&in, &in, count); | |
504 | s->resample_in_constraint= 0; | |
505 | if(s->in_buffer_count != count || in_count) | |
506 | continue; | |
507 | if (padless) { | |
508 | padless = 0; | |
509 | continue; | |
510 | } | |
511 | } | |
512 | break; | |
513 | }while(1); | |
514 | ||
515 | s->resample_in_constraint= !!out_count; | |
516 | ||
517 | return ret_sum; | |
518 | } | |
519 | ||
520 | static int swr_convert_internal(struct SwrContext *s, AudioData *out, int out_count, | |
521 | AudioData *in , int in_count){ | |
522 | AudioData *postin, *midbuf, *preout; | |
523 | int ret/*, in_max*/; | |
524 | AudioData preout_tmp, midbuf_tmp; | |
525 | ||
526 | if(s->full_convert){ | |
527 | av_assert0(!s->resample); | |
528 | swri_audio_convert(s->full_convert, out, in, in_count); | |
529 | return out_count; | |
530 | } | |
531 | ||
532 | // in_max= out_count*(int64_t)s->in_sample_rate / s->out_sample_rate + resample_filter_taps; | |
533 | // in_count= FFMIN(in_count, in_in + 2 - s->hist_buffer_count); | |
534 | ||
535 | if((ret=swri_realloc_audio(&s->postin, in_count))<0) | |
536 | return ret; | |
537 | if(s->resample_first){ | |
538 | av_assert0(s->midbuf.ch_count == s->used_ch_count); | |
539 | if((ret=swri_realloc_audio(&s->midbuf, out_count))<0) | |
540 | return ret; | |
541 | }else{ | |
542 | av_assert0(s->midbuf.ch_count == s->out.ch_count); | |
543 | if((ret=swri_realloc_audio(&s->midbuf, in_count))<0) | |
544 | return ret; | |
545 | } | |
546 | if((ret=swri_realloc_audio(&s->preout, out_count))<0) | |
547 | return ret; | |
548 | ||
549 | postin= &s->postin; | |
550 | ||
551 | midbuf_tmp= s->midbuf; | |
552 | midbuf= &midbuf_tmp; | |
553 | preout_tmp= s->preout; | |
554 | preout= &preout_tmp; | |
555 | ||
556 | if(s->int_sample_fmt == s-> in_sample_fmt && s->in.planar && !s->channel_map) | |
557 | postin= in; | |
558 | ||
559 | if(s->resample_first ? !s->resample : !s->rematrix) | |
560 | midbuf= postin; | |
561 | ||
562 | if(s->resample_first ? !s->rematrix : !s->resample) | |
563 | preout= midbuf; | |
564 | ||
565 | if(s->int_sample_fmt == s->out_sample_fmt && s->out.planar | |
566 | && !(s->out_sample_fmt==AV_SAMPLE_FMT_S32P && (s->dither.output_sample_bits&31))){ | |
567 | if(preout==in){ | |
568 | out_count= FFMIN(out_count, in_count); //TODO check at the end if this is needed or redundant | |
569 | av_assert0(s->in.planar); //we only support planar internally so it has to be, we support copying non planar though | |
570 | copy(out, in, out_count); | |
571 | return out_count; | |
572 | } | |
573 | else if(preout==postin) preout= midbuf= postin= out; | |
574 | else if(preout==midbuf) preout= midbuf= out; | |
575 | else preout= out; | |
576 | } | |
577 | ||
578 | if(in != postin){ | |
579 | swri_audio_convert(s->in_convert, postin, in, in_count); | |
580 | } | |
581 | ||
582 | if(s->resample_first){ | |
583 | if(postin != midbuf) | |
584 | out_count= resample(s, midbuf, out_count, postin, in_count); | |
585 | if(midbuf != preout) | |
586 | swri_rematrix(s, preout, midbuf, out_count, preout==out); | |
587 | }else{ | |
588 | if(postin != midbuf) | |
589 | swri_rematrix(s, midbuf, postin, in_count, midbuf==out); | |
590 | if(midbuf != preout) | |
591 | out_count= resample(s, preout, out_count, midbuf, in_count); | |
592 | } | |
593 | ||
594 | if(preout != out && out_count){ | |
595 | AudioData *conv_src = preout; | |
596 | if(s->dither.method){ | |
597 | int ch; | |
598 | int dither_count= FFMAX(out_count, 1<<16); | |
599 | ||
600 | if (preout == in) { | |
601 | conv_src = &s->dither.temp; | |
602 | if((ret=swri_realloc_audio(&s->dither.temp, dither_count))<0) | |
603 | return ret; | |
604 | } | |
605 | ||
606 | if((ret=swri_realloc_audio(&s->dither.noise, dither_count))<0) | |
607 | return ret; | |
608 | if(ret) | |
609 | for(ch=0; ch<s->dither.noise.ch_count; ch++) | |
610 | swri_get_dither(s, s->dither.noise.ch[ch], s->dither.noise.count, 12345678913579<<ch, s->dither.noise.fmt); | |
611 | av_assert0(s->dither.noise.ch_count == preout->ch_count); | |
612 | ||
613 | if(s->dither.noise_pos + out_count > s->dither.noise.count) | |
614 | s->dither.noise_pos = 0; | |
615 | ||
616 | if (s->dither.method < SWR_DITHER_NS){ | |
617 | if (s->mix_2_1_simd) { | |
618 | int len1= out_count&~15; | |
619 | int off = len1 * preout->bps; | |
620 | ||
621 | if(len1) | |
622 | for(ch=0; ch<preout->ch_count; ch++) | |
623 | s->mix_2_1_simd(conv_src->ch[ch], preout->ch[ch], s->dither.noise.ch[ch] + s->dither.noise.bps * s->dither.noise_pos, s->native_simd_one, 0, 0, len1); | |
624 | if(out_count != len1) | |
625 | for(ch=0; ch<preout->ch_count; ch++) | |
626 | s->mix_2_1_f(conv_src->ch[ch] + off, preout->ch[ch] + off, s->dither.noise.ch[ch] + s->dither.noise.bps * s->dither.noise_pos + off + len1, s->native_one, 0, 0, out_count - len1); | |
627 | } else { | |
628 | for(ch=0; ch<preout->ch_count; ch++) | |
629 | s->mix_2_1_f(conv_src->ch[ch], preout->ch[ch], s->dither.noise.ch[ch] + s->dither.noise.bps * s->dither.noise_pos, s->native_one, 0, 0, out_count); | |
630 | } | |
631 | } else { | |
632 | switch(s->int_sample_fmt) { | |
633 | case AV_SAMPLE_FMT_S16P :swri_noise_shaping_int16(s, conv_src, preout, &s->dither.noise, out_count); break; | |
634 | case AV_SAMPLE_FMT_S32P :swri_noise_shaping_int32(s, conv_src, preout, &s->dither.noise, out_count); break; | |
635 | case AV_SAMPLE_FMT_FLTP :swri_noise_shaping_float(s, conv_src, preout, &s->dither.noise, out_count); break; | |
636 | case AV_SAMPLE_FMT_DBLP :swri_noise_shaping_double(s,conv_src, preout, &s->dither.noise, out_count); break; | |
637 | } | |
638 | } | |
639 | s->dither.noise_pos += out_count; | |
640 | } | |
641 | //FIXME packed doesn't need more than 1 chan here! | |
642 | swri_audio_convert(s->out_convert, out, conv_src, out_count); | |
643 | } | |
644 | return out_count; | |
645 | } | |
646 | ||
647 | int swr_is_initialized(struct SwrContext *s) { | |
648 | return !!s->in_buffer.ch_count; | |
649 | } | |
650 | ||
651 | int swr_convert(struct SwrContext *s, uint8_t *out_arg[SWR_CH_MAX], int out_count, | |
652 | const uint8_t *in_arg [SWR_CH_MAX], int in_count){ | |
653 | AudioData * in= &s->in; | |
654 | AudioData *out= &s->out; | |
655 | ||
656 | if (!swr_is_initialized(s)) { | |
657 | av_log(s, AV_LOG_ERROR, "Context has not been initialized\n"); | |
658 | return AVERROR(EINVAL); | |
659 | } | |
660 | ||
661 | while(s->drop_output > 0){ | |
662 | int ret; | |
663 | uint8_t *tmp_arg[SWR_CH_MAX]; | |
664 | #define MAX_DROP_STEP 16384 | |
665 | if((ret=swri_realloc_audio(&s->drop_temp, FFMIN(s->drop_output, MAX_DROP_STEP)))<0) | |
666 | return ret; | |
667 | ||
668 | reversefill_audiodata(&s->drop_temp, tmp_arg); | |
669 | s->drop_output *= -1; //FIXME find a less hackish solution | |
670 | ret = swr_convert(s, tmp_arg, FFMIN(-s->drop_output, MAX_DROP_STEP), in_arg, in_count); //FIXME optimize but this is as good as never called so maybe it doesn't matter | |
671 | s->drop_output *= -1; | |
672 | in_count = 0; | |
673 | if(ret>0) { | |
674 | s->drop_output -= ret; | |
675 | if (!s->drop_output && !out_arg) | |
676 | return 0; | |
677 | continue; | |
678 | } | |
679 | ||
f6fa7814 DM |
680 | av_assert0(s->drop_output); |
681 | return 0; | |
2ba45a60 DM |
682 | } |
683 | ||
684 | if(!in_arg){ | |
685 | if(s->resample){ | |
686 | if (!s->flushed) | |
687 | s->resampler->flush(s); | |
688 | s->resample_in_constraint = 0; | |
689 | s->flushed = 1; | |
690 | }else if(!s->in_buffer_count){ | |
691 | return 0; | |
692 | } | |
693 | }else | |
694 | fill_audiodata(in , (void*)in_arg); | |
695 | ||
696 | fill_audiodata(out, out_arg); | |
697 | ||
698 | if(s->resample){ | |
699 | int ret = swr_convert_internal(s, out, out_count, in, in_count); | |
700 | if(ret>0 && !s->drop_output) | |
701 | s->outpts += ret * (int64_t)s->in_sample_rate; | |
702 | return ret; | |
703 | }else{ | |
704 | AudioData tmp= *in; | |
705 | int ret2=0; | |
706 | int ret, size; | |
707 | size = FFMIN(out_count, s->in_buffer_count); | |
708 | if(size){ | |
709 | buf_set(&tmp, &s->in_buffer, s->in_buffer_index); | |
710 | ret= swr_convert_internal(s, out, size, &tmp, size); | |
711 | if(ret<0) | |
712 | return ret; | |
713 | ret2= ret; | |
714 | s->in_buffer_count -= ret; | |
715 | s->in_buffer_index += ret; | |
716 | buf_set(out, out, ret); | |
717 | out_count -= ret; | |
718 | if(!s->in_buffer_count) | |
719 | s->in_buffer_index = 0; | |
720 | } | |
721 | ||
722 | if(in_count){ | |
723 | size= s->in_buffer_index + s->in_buffer_count + in_count - out_count; | |
724 | ||
725 | if(in_count > out_count) { //FIXME move after swr_convert_internal | |
726 | if( size > s->in_buffer.count | |
727 | && s->in_buffer_count + in_count - out_count <= s->in_buffer_index){ | |
728 | buf_set(&tmp, &s->in_buffer, s->in_buffer_index); | |
729 | copy(&s->in_buffer, &tmp, s->in_buffer_count); | |
730 | s->in_buffer_index=0; | |
731 | }else | |
732 | if((ret=swri_realloc_audio(&s->in_buffer, size)) < 0) | |
733 | return ret; | |
734 | } | |
735 | ||
736 | if(out_count){ | |
737 | size = FFMIN(in_count, out_count); | |
738 | ret= swr_convert_internal(s, out, size, in, size); | |
739 | if(ret<0) | |
740 | return ret; | |
741 | buf_set(in, in, ret); | |
742 | in_count -= ret; | |
743 | ret2 += ret; | |
744 | } | |
745 | if(in_count){ | |
746 | buf_set(&tmp, &s->in_buffer, s->in_buffer_index + s->in_buffer_count); | |
747 | copy(&tmp, in, in_count); | |
748 | s->in_buffer_count += in_count; | |
749 | } | |
750 | } | |
751 | if(ret2>0 && !s->drop_output) | |
752 | s->outpts += ret2 * (int64_t)s->in_sample_rate; | |
753 | return ret2; | |
754 | } | |
755 | } | |
756 | ||
757 | int swr_drop_output(struct SwrContext *s, int count){ | |
f6fa7814 | 758 | const uint8_t *tmp_arg[SWR_CH_MAX]; |
2ba45a60 DM |
759 | s->drop_output += count; |
760 | ||
761 | if(s->drop_output <= 0) | |
762 | return 0; | |
763 | ||
764 | av_log(s, AV_LOG_VERBOSE, "discarding %d audio samples\n", count); | |
f6fa7814 | 765 | return swr_convert(s, NULL, s->drop_output, tmp_arg, 0); |
2ba45a60 DM |
766 | } |
767 | ||
768 | int swr_inject_silence(struct SwrContext *s, int count){ | |
769 | int ret, i; | |
770 | uint8_t *tmp_arg[SWR_CH_MAX]; | |
771 | ||
772 | if(count <= 0) | |
773 | return 0; | |
774 | ||
775 | #define MAX_SILENCE_STEP 16384 | |
776 | while (count > MAX_SILENCE_STEP) { | |
777 | if ((ret = swr_inject_silence(s, MAX_SILENCE_STEP)) < 0) | |
778 | return ret; | |
779 | count -= MAX_SILENCE_STEP; | |
780 | } | |
781 | ||
782 | if((ret=swri_realloc_audio(&s->silence, count))<0) | |
783 | return ret; | |
784 | ||
785 | if(s->silence.planar) for(i=0; i<s->silence.ch_count; i++) { | |
786 | memset(s->silence.ch[i], s->silence.bps==1 ? 0x80 : 0, count*s->silence.bps); | |
787 | } else | |
788 | memset(s->silence.ch[0], s->silence.bps==1 ? 0x80 : 0, count*s->silence.bps*s->silence.ch_count); | |
789 | ||
790 | reversefill_audiodata(&s->silence, tmp_arg); | |
791 | av_log(s, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", count); | |
792 | ret = swr_convert(s, NULL, 0, (const uint8_t**)tmp_arg, count); | |
793 | return ret; | |
794 | } | |
795 | ||
796 | int64_t swr_get_delay(struct SwrContext *s, int64_t base){ | |
797 | if (s->resampler && s->resample){ | |
798 | return s->resampler->get_delay(s, base); | |
799 | }else{ | |
800 | return (s->in_buffer_count*base + (s->in_sample_rate>>1))/ s->in_sample_rate; | |
801 | } | |
802 | } | |
803 | ||
804 | int swr_set_compensation(struct SwrContext *s, int sample_delta, int compensation_distance){ | |
805 | int ret; | |
806 | ||
807 | if (!s || compensation_distance < 0) | |
808 | return AVERROR(EINVAL); | |
809 | if (!compensation_distance && sample_delta) | |
810 | return AVERROR(EINVAL); | |
811 | if (!s->resample) { | |
812 | s->flags |= SWR_FLAG_RESAMPLE; | |
813 | ret = swr_init(s); | |
814 | if (ret < 0) | |
815 | return ret; | |
816 | } | |
817 | if (!s->resampler->set_compensation){ | |
818 | return AVERROR(EINVAL); | |
819 | }else{ | |
820 | return s->resampler->set_compensation(s->resample, sample_delta, compensation_distance); | |
821 | } | |
822 | } | |
823 | ||
824 | int64_t swr_next_pts(struct SwrContext *s, int64_t pts){ | |
825 | if(pts == INT64_MIN) | |
826 | return s->outpts; | |
827 | ||
828 | if (s->firstpts == AV_NOPTS_VALUE) | |
829 | s->outpts = s->firstpts = pts; | |
830 | ||
831 | if(s->min_compensation >= FLT_MAX) { | |
832 | return (s->outpts = pts - swr_get_delay(s, s->in_sample_rate * (int64_t)s->out_sample_rate)); | |
833 | } else { | |
834 | int64_t delta = pts - swr_get_delay(s, s->in_sample_rate * (int64_t)s->out_sample_rate) - s->outpts + s->drop_output*(int64_t)s->in_sample_rate; | |
835 | double fdelta = delta /(double)(s->in_sample_rate * (int64_t)s->out_sample_rate); | |
836 | ||
837 | if(fabs(fdelta) > s->min_compensation) { | |
838 | if(s->outpts == s->firstpts || fabs(fdelta) > s->min_hard_compensation){ | |
839 | int ret; | |
840 | if(delta > 0) ret = swr_inject_silence(s, delta / s->out_sample_rate); | |
841 | else ret = swr_drop_output (s, -delta / s-> in_sample_rate); | |
842 | if(ret<0){ | |
843 | av_log(s, AV_LOG_ERROR, "Failed to compensate for timestamp delta of %f\n", fdelta); | |
844 | } | |
845 | } else if(s->soft_compensation_duration && s->max_soft_compensation) { | |
846 | int duration = s->out_sample_rate * s->soft_compensation_duration; | |
847 | double max_soft_compensation = s->max_soft_compensation / (s->max_soft_compensation < 0 ? -s->in_sample_rate : 1); | |
848 | int comp = av_clipf(fdelta, -max_soft_compensation, max_soft_compensation) * duration ; | |
849 | av_log(s, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n", fdelta, comp, duration); | |
850 | swr_set_compensation(s, comp, duration); | |
851 | } | |
852 | } | |
853 | ||
854 | return s->outpts; | |
855 | } | |
856 | } |