LCOV - code coverage report
Current view: top level - libswresample - swresample.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 454 598 75.9 %
Date: 2017-10-24 00:14:43 Functions: 24 26 92.3 %

          Line data    Source code
       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             : #include "libavutil/internal.h"
      27             : 
      28             : #include <float.h>
      29             : 
      30             : #define ALIGN 32
      31             : 
      32             : #include "libavutil/ffversion.h"
      33             : const char swr_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
      34             : 
      35        5431 : unsigned swresample_version(void)
      36             : {
      37             :     av_assert0(LIBSWRESAMPLE_VERSION_MICRO >= 100);
      38        5431 :     return LIBSWRESAMPLE_VERSION_INT;
      39             : }
      40             : 
      41        5431 : const char *swresample_configuration(void)
      42             : {
      43        5431 :     return FFMPEG_CONFIGURATION;
      44             : }
      45             : 
      46           0 : const char *swresample_license(void)
      47             : {
      48             : #define LICENSE_PREFIX "libswresample license: "
      49           0 :     return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
      50             : }
      51             : 
      52           6 : int swr_set_channel_mapping(struct SwrContext *s, const int *channel_map){
      53           6 :     if(!s || s->in_convert) // s needs to be allocated but not initialized
      54           0 :         return AVERROR(EINVAL);
      55           6 :     s->channel_map = channel_map;
      56           6 :     return 0;
      57             : }
      58             : 
      59        1169 : struct SwrContext *swr_alloc_set_opts(struct SwrContext *s,
      60             :                                       int64_t out_ch_layout, enum AVSampleFormat out_sample_fmt, int out_sample_rate,
      61             :                                       int64_t  in_ch_layout, enum AVSampleFormat  in_sample_fmt, int  in_sample_rate,
      62             :                                       int log_offset, void *log_ctx){
      63        1169 :     if(!s) s= swr_alloc();
      64        1169 :     if(!s) return NULL;
      65             : 
      66        1169 :     s->log_level_offset= log_offset;
      67        1169 :     s->log_ctx= log_ctx;
      68             : 
      69        1169 :     if (av_opt_set_int(s, "ocl", out_ch_layout,   0) < 0)
      70           0 :         goto fail;
      71             : 
      72        1169 :     if (av_opt_set_int(s, "osf", out_sample_fmt,  0) < 0)
      73           0 :         goto fail;
      74             : 
      75        1169 :     if (av_opt_set_int(s, "osr", out_sample_rate, 0) < 0)
      76           0 :         goto fail;
      77             : 
      78        1169 :     if (av_opt_set_int(s, "icl", in_ch_layout,    0) < 0)
      79           0 :         goto fail;
      80             : 
      81        1169 :     if (av_opt_set_int(s, "isf", in_sample_fmt,   0) < 0)
      82           0 :         goto fail;
      83             : 
      84        1169 :     if (av_opt_set_int(s, "isr", in_sample_rate,  0) < 0)
      85           0 :         goto fail;
      86             : 
      87        1169 :     if (av_opt_set_int(s, "ich", av_get_channel_layout_nb_channels(s-> user_in_ch_layout), 0) < 0)
      88           0 :         goto fail;
      89             : 
      90        1169 :     if (av_opt_set_int(s, "och", av_get_channel_layout_nb_channels(s->user_out_ch_layout), 0) < 0)
      91           0 :         goto fail;
      92             : 
      93        1169 :     av_opt_set_int(s, "uch", 0, 0);
      94        1169 :     return s;
      95           0 : fail:
      96           0 :     av_log(s, AV_LOG_ERROR, "Failed to set option\n");
      97           0 :     swr_free(&s);
      98           0 :     return NULL;
      99             : }
     100             : 
     101        5086 : static void set_audiodata_fmt(AudioData *a, enum AVSampleFormat fmt){
     102        5086 :     a->fmt   = fmt;
     103        5086 :     a->bps   = av_get_bytes_per_sample(fmt);
     104        5086 :     a->planar= av_sample_fmt_is_planar(fmt);
     105        5086 :     if (a->ch_count == 1)
     106        4097 :         a->planar = 1;
     107        5086 : }
     108             : 
     109       19344 : static void free_temp(AudioData *a){
     110       19344 :     av_free(a->data);
     111       19344 :     memset(a, 0, sizeof(*a));
     112       19344 : }
     113             : 
     114        2418 : static void clear_context(SwrContext *s){
     115        2418 :     s->in_buffer_index= 0;
     116        2418 :     s->in_buffer_count= 0;
     117        2418 :     s->resample_in_constraint= 0;
     118        2418 :     memset(s->in.ch, 0, sizeof(s->in.ch));
     119        2418 :     memset(s->out.ch, 0, sizeof(s->out.ch));
     120        2418 :     free_temp(&s->postin);
     121        2418 :     free_temp(&s->midbuf);
     122        2418 :     free_temp(&s->preout);
     123        2418 :     free_temp(&s->in_buffer);
     124        2418 :     free_temp(&s->silence);
     125        2418 :     free_temp(&s->drop_temp);
     126        2418 :     free_temp(&s->dither.noise);
     127        2418 :     free_temp(&s->dither.temp);
     128        2418 :     swri_audio_convert_free(&s-> in_convert);
     129        2418 :     swri_audio_convert_free(&s->out_convert);
     130        2418 :     swri_audio_convert_free(&s->full_convert);
     131        2418 :     swri_rematrix_free(s);
     132             : 
     133        2418 :     s->delayed_samples_fixup = 0;
     134        2418 :     s->flushed = 0;
     135        2418 : }
     136             : 
     137        1211 : av_cold void swr_free(SwrContext **ss){
     138        1211 :     SwrContext *s= *ss;
     139        1211 :     if(s){
     140        1210 :         clear_context(s);
     141        1210 :         if (s->resampler)
     142        1178 :             s->resampler->free(&s->resample);
     143             :     }
     144             : 
     145        1211 :     av_freep(ss);
     146        1211 : }
     147             : 
     148          17 : av_cold void swr_close(SwrContext *s){
     149          17 :     clear_context(s);
     150          17 : }
     151             : 
     152        1191 : av_cold int swr_init(struct SwrContext *s){
     153             :     int ret;
     154             :     char l1[1024], l2[1024];
     155             : 
     156        1191 :     clear_context(s);
     157             : 
     158        1191 :     if(s-> in_sample_fmt >= AV_SAMPLE_FMT_NB){
     159           0 :         av_log(s, AV_LOG_ERROR, "Requested input sample format %d is invalid\n", s->in_sample_fmt);
     160           0 :         return AVERROR(EINVAL);
     161             :     }
     162        1191 :     if(s->out_sample_fmt >= AV_SAMPLE_FMT_NB){
     163           0 :         av_log(s, AV_LOG_ERROR, "Requested output sample format %d is invalid\n", s->out_sample_fmt);
     164           0 :         return AVERROR(EINVAL);
     165             :     }
     166             : 
     167        1191 :     s->out.ch_count  = s-> user_out_ch_count;
     168        1191 :     s-> in.ch_count  = s->  user_in_ch_count;
     169        1191 :     s->used_ch_count = s->user_used_ch_count;
     170             : 
     171        1191 :     s-> in_ch_layout = s-> user_in_ch_layout;
     172        1191 :     s->out_ch_layout = s->user_out_ch_layout;
     173             : 
     174        1191 :     s->int_sample_fmt= s->user_int_sample_fmt;
     175             : 
     176        1191 :     s->dither.method = s->user_dither_method;
     177             : 
     178        1191 :     if(av_get_channel_layout_nb_channels(s-> in_ch_layout) > SWR_CH_MAX) {
     179           0 :         av_log(s, AV_LOG_WARNING, "Input channel layout 0x%"PRIx64" is invalid or unsupported.\n", s-> in_ch_layout);
     180           0 :         s->in_ch_layout = 0;
     181             :     }
     182             : 
     183        1191 :     if(av_get_channel_layout_nb_channels(s->out_ch_layout) > SWR_CH_MAX) {
     184           0 :         av_log(s, AV_LOG_WARNING, "Output channel layout 0x%"PRIx64" is invalid or unsupported.\n", s->out_ch_layout);
     185           0 :         s->out_ch_layout = 0;
     186             :     }
     187             : 
     188        1191 :     switch(s->engine){
     189             : #if CONFIG_LIBSOXR
     190             :         case SWR_ENGINE_SOXR: s->resampler = &swri_soxr_resampler; break;
     191             : #endif
     192        1191 :         case SWR_ENGINE_SWR : s->resampler = &swri_resampler; break;
     193           0 :         default:
     194           0 :             av_log(s, AV_LOG_ERROR, "Requested resampling engine is unavailable\n");
     195           0 :             return AVERROR(EINVAL);
     196             :     }
     197             : 
     198        1191 :     if(!s->used_ch_count)
     199        1185 :         s->used_ch_count= s->in.ch_count;
     200             : 
     201        1191 :     if(s->used_ch_count && s-> in_ch_layout && s->used_ch_count != av_get_channel_layout_nb_channels(s-> in_ch_layout)){
     202           0 :         av_log(s, AV_LOG_WARNING, "Input channel layout has a different number of channels than the number of used channels, ignoring layout\n");
     203           0 :         s-> in_ch_layout= 0;
     204             :     }
     205             : 
     206        1191 :     if(!s-> in_ch_layout)
     207           3 :         s-> in_ch_layout= av_get_default_channel_layout(s->used_ch_count);
     208        1191 :     if(!s->out_ch_layout)
     209           2 :         s->out_ch_layout= av_get_default_channel_layout(s->out.ch_count);
     210             : 
     211        2372 :     s->rematrix= s->out_ch_layout  !=s->in_ch_layout || s->rematrix_volume!=1.0 ||
     212        1181 :                  s->rematrix_custom;
     213             : 
     214        1191 :     if(s->int_sample_fmt == AV_SAMPLE_FMT_NONE){
     215         563 :         if(   av_get_bytes_per_sample(s-> in_sample_fmt) <= 2
     216         236 :            && av_get_bytes_per_sample(s->out_sample_fmt) <= 2){
     217         180 :             s->int_sample_fmt= AV_SAMPLE_FMT_S16P;
     218         383 :         }else if(   av_get_bytes_per_sample(s-> in_sample_fmt) <= 2
     219          56 :            && !s->rematrix
     220          55 :            && s->out_sample_rate==s->in_sample_rate
     221          55 :            && !(s->flags & SWR_FLAG_RESAMPLE)){
     222          55 :             s->int_sample_fmt= AV_SAMPLE_FMT_S16P;
     223         328 :         }else if(   av_get_planar_sample_fmt(s-> in_sample_fmt) == AV_SAMPLE_FMT_S32P
     224          69 :                  && av_get_planar_sample_fmt(s->out_sample_fmt) == AV_SAMPLE_FMT_S32P
     225          37 :                  && !s->rematrix
     226          37 :                  && s->out_sample_rate == s->in_sample_rate
     227          37 :                  && !(s->flags & SWR_FLAG_RESAMPLE)
     228          37 :                  && s->engine != SWR_ENGINE_SOXR){
     229          37 :             s->int_sample_fmt= AV_SAMPLE_FMT_S32P;
     230         291 :         }else if(av_get_bytes_per_sample(s->in_sample_fmt) <= 4){
     231         271 :             s->int_sample_fmt= AV_SAMPLE_FMT_FLTP;
     232             :         }else{
     233          20 :             s->int_sample_fmt= AV_SAMPLE_FMT_DBLP;
     234             :         }
     235             :     }
     236        1191 :     av_log(s, AV_LOG_DEBUG, "Using %s internally between filters\n", av_get_sample_fmt_name(s->int_sample_fmt));
     237             : 
     238        1191 :     if(   s->int_sample_fmt != AV_SAMPLE_FMT_S16P
     239         792 :         &&s->int_sample_fmt != AV_SAMPLE_FMT_S32P
     240         611 :         &&s->int_sample_fmt != AV_SAMPLE_FMT_S64P
     241         611 :         &&s->int_sample_fmt != AV_SAMPLE_FMT_FLTP
     242         176 :         &&s->int_sample_fmt != AV_SAMPLE_FMT_DBLP){
     243           0 :         av_log(s, AV_LOG_ERROR, "Requested sample format %s is not supported internally, S16/S32/S64/FLT/DBL is supported\n", av_get_sample_fmt_name(s->int_sample_fmt));
     244           0 :         return AVERROR(EINVAL);
     245             :     }
     246             : 
     247        1191 :     set_audiodata_fmt(&s-> in, s-> in_sample_fmt);
     248        1191 :     set_audiodata_fmt(&s->out, s->out_sample_fmt);
     249             : 
     250        1191 :     if (s->firstpts_in_samples != AV_NOPTS_VALUE) {
     251          53 :         if (!s->async && s->min_compensation >= FLT_MAX/2)
     252           0 :             s->async = 1;
     253          53 :         s->firstpts =
     254          53 :         s->outpts   = s->firstpts_in_samples * s->out_sample_rate;
     255             :     } else
     256        1138 :         s->firstpts = AV_NOPTS_VALUE;
     257             : 
     258        1191 :     if (s->async) {
     259          52 :         if (s->min_compensation >= FLT_MAX/2)
     260          52 :             s->min_compensation = 0.001;
     261          52 :         if (s->async > 1.0001) {
     262          52 :             s->max_soft_compensation = s->async / (double) s->in_sample_rate;
     263             :         }
     264             :     }
     265             : 
     266        1191 :     if (s->out_sample_rate!=s->in_sample_rate || (s->flags & SWR_FLAG_RESAMPLE)){
     267         667 :         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, s->exact_rational);
     268        1334 :         if (!s->resample) {
     269           0 :             av_log(s, AV_LOG_ERROR, "Failed to initialize resampler\n");
     270           0 :             return AVERROR(ENOMEM);
     271             :         }
     272             :     }else
     273         524 :         s->resampler->free(&s->resample);
     274        1191 :     if(    s->int_sample_fmt != AV_SAMPLE_FMT_S16P
     275         792 :         && s->int_sample_fmt != AV_SAMPLE_FMT_S32P
     276         611 :         && s->int_sample_fmt != AV_SAMPLE_FMT_FLTP
     277         176 :         && s->int_sample_fmt != AV_SAMPLE_FMT_DBLP
     278           0 :         && s->resample){
     279           0 :         av_log(s, AV_LOG_ERROR, "Resampling only supported with internal s16/s32/flt/dbl\n");
     280           0 :         ret = AVERROR(EINVAL);
     281           0 :         goto fail;
     282             :     }
     283             : 
     284             : #define RSC 1 //FIXME finetune
     285        1191 :     if(!s-> in.ch_count)
     286          22 :         s-> in.ch_count= av_get_channel_layout_nb_channels(s-> in_ch_layout);
     287        1191 :     if(!s->used_ch_count)
     288          22 :         s->used_ch_count= s->in.ch_count;
     289        1191 :     if(!s->out.ch_count)
     290          22 :         s->out.ch_count= av_get_channel_layout_nb_channels(s->out_ch_layout);
     291             : 
     292        1191 :     if(!s-> in.ch_count){
     293           0 :         av_assert0(!s->in_ch_layout);
     294           0 :         av_log(s, AV_LOG_ERROR, "Input channel count and layout are unset\n");
     295           0 :         ret = AVERROR(EINVAL);
     296           0 :         goto fail;
     297             :     }
     298             : 
     299        1191 :     av_get_channel_layout_string(l1, sizeof(l1), s-> in.ch_count, s-> in_ch_layout);
     300        1191 :     av_get_channel_layout_string(l2, sizeof(l2), s->out.ch_count, s->out_ch_layout);
     301        1191 :     if (s->out_ch_layout && s->out.ch_count != av_get_channel_layout_nb_channels(s->out_ch_layout)) {
     302           0 :         av_log(s, AV_LOG_ERROR, "Output channel layout %s mismatches specified channel count %d\n", l2, s->out.ch_count);
     303           0 :         ret = AVERROR(EINVAL);
     304           0 :         goto fail;
     305             :     }
     306        1191 :     if (s->in_ch_layout && s->used_ch_count != av_get_channel_layout_nb_channels(s->in_ch_layout)) {
     307           0 :         av_log(s, AV_LOG_ERROR, "Input channel layout %s mismatches specified channel count %d\n", l1, s->used_ch_count);
     308           0 :         ret = AVERROR(EINVAL);
     309           0 :         goto fail;
     310             :     }
     311             : 
     312        1191 :     if ((!s->out_ch_layout || !s->in_ch_layout) && s->used_ch_count != s->out.ch_count && !s->rematrix_custom) {
     313           0 :         av_log(s, AV_LOG_ERROR, "Rematrix is needed between %s and %s "
     314             :                "but there is not enough information to do it\n", l1, l2);
     315           0 :         ret = AVERROR(EINVAL);
     316           0 :         goto fail;
     317             :     }
     318             : 
     319        1191 : av_assert0(s->used_ch_count);
     320        1191 : av_assert0(s->out.ch_count);
     321        1191 :     s->resample_first= RSC*s->out.ch_count/s->in.ch_count - RSC < s->out_sample_rate/(float)s-> in_sample_rate - 1.0;
     322             : 
     323        1191 :     s->in_buffer= s->in;
     324        1191 :     s->silence  = s->in;
     325        1191 :     s->drop_temp= s->out;
     326             : 
     327        1191 :     if ((ret = swri_dither_init(s, s->out_sample_fmt, s->int_sample_fmt)) < 0)
     328           0 :         goto fail;
     329             : 
     330        1191 :     if(!s->resample && !s->rematrix && !s->channel_map && !s->dither.method){
     331         512 :         s->full_convert = swri_audio_convert_alloc(s->out_sample_fmt,
     332             :                                                    s-> in_sample_fmt, s-> in.ch_count, NULL, 0);
     333         512 :         return 0;
     334             :     }
     335             : 
     336         679 :     s->in_convert = swri_audio_convert_alloc(s->int_sample_fmt,
     337             :                                              s-> in_sample_fmt, s->used_ch_count, s->channel_map, 0);
     338         679 :     s->out_convert= swri_audio_convert_alloc(s->out_sample_fmt,
     339             :                                              s->int_sample_fmt, s->out.ch_count, NULL, 0);
     340             : 
     341         679 :     if (!s->in_convert || !s->out_convert) {
     342           0 :         ret = AVERROR(ENOMEM);
     343           0 :         goto fail;
     344             :     }
     345             : 
     346         679 :     s->postin= s->in;
     347         679 :     s->preout= s->out;
     348         679 :     s->midbuf= s->in;
     349             : 
     350         679 :     if(s->channel_map){
     351           6 :         s->postin.ch_count=
     352           6 :         s->midbuf.ch_count= s->used_ch_count;
     353           6 :         if(s->resample)
     354           0 :             s->in_buffer.ch_count= s->used_ch_count;
     355             :     }
     356         679 :     if(!s->resample_first){
     357         326 :         s->midbuf.ch_count= s->out.ch_count;
     358         326 :         if(s->resample)
     359         322 :             s->in_buffer.ch_count = s->out.ch_count;
     360             :     }
     361             : 
     362         679 :     set_audiodata_fmt(&s->postin, s->int_sample_fmt);
     363         679 :     set_audiodata_fmt(&s->midbuf, s->int_sample_fmt);
     364         679 :     set_audiodata_fmt(&s->preout, s->int_sample_fmt);
     365             : 
     366         679 :     if(s->resample){
     367         667 :         set_audiodata_fmt(&s->in_buffer, s->int_sample_fmt);
     368             :     }
     369             : 
     370         679 :     av_assert0(!s->preout.count);
     371         679 :     s->dither.noise = s->preout;
     372         679 :     s->dither.temp  = s->preout;
     373         679 :     if (s->dither.method > SWR_DITHER_NS) {
     374           0 :         s->dither.noise.bps = 4;
     375           0 :         s->dither.noise.fmt = AV_SAMPLE_FMT_FLTP;
     376           0 :         s->dither.noise_scale = 1;
     377             :     }
     378             : 
     379         679 :     if(s->rematrix || s->dither.method) {
     380          10 :         ret = swri_rematrix_init(s);
     381          10 :         if (ret < 0)
     382           0 :             goto fail;
     383             :     }
     384             : 
     385         679 :     return 0;
     386           0 : fail:
     387           0 :     swr_close(s);
     388           0 :     return ret;
     389             : 
     390             : }
     391             : 
     392       84534 : int swri_realloc_audio(AudioData *a, int count){
     393             :     int i, countb;
     394             :     AudioData old;
     395             : 
     396       84534 :     if(count < 0 || count > INT_MAX/2/a->bps/a->ch_count)
     397           0 :         return AVERROR(EINVAL);
     398             : 
     399       84534 :     if(a->count >= count)
     400       80525 :         return 0;
     401             : 
     402        4009 :     count*=2;
     403             : 
     404        4009 :     countb= FFALIGN(count*a->bps, ALIGN);
     405        4009 :     old= *a;
     406             : 
     407        4009 :     av_assert0(a->bps);
     408        4009 :     av_assert0(a->ch_count);
     409             : 
     410        4009 :     a->data= av_mallocz_array(countb, a->ch_count);
     411        4009 :     if(!a->data)
     412           0 :         return AVERROR(ENOMEM);
     413        8251 :     for(i=0; i<a->ch_count; i++){
     414        4242 :         a->ch[i]= a->data + i*(a->planar ? countb : a->bps);
     415        4242 :         if(a->count && a->planar) memcpy(a->ch[i], old.ch[i], a->count*a->bps);
     416             :     }
     417        4009 :     if(a->count && !a->planar) memcpy(a->ch[0], old.ch[0], a->count*a->ch_count*a->bps);
     418        4009 :     av_freep(&old.data);
     419        4009 :     a->count= count;
     420             : 
     421        4009 :     return 1;
     422             : }
     423             : 
     424       27902 : static void copy(AudioData *out, AudioData *in,
     425             :                  int count){
     426       27902 :     av_assert0(out->planar == in->planar);
     427       27902 :     av_assert0(out->bps == in->bps);
     428       27902 :     av_assert0(out->ch_count == in->ch_count);
     429       27902 :     if(out->planar){
     430             :         int ch;
     431       77188 :         for(ch=0; ch<out->ch_count; ch++)
     432       49286 :             memcpy(out->ch[ch], in->ch[ch], count*out->bps);
     433             :     }else
     434           0 :         memcpy(out->ch[0], in->ch[0], count*out->ch_count*out->bps);
     435       27902 : }
     436             : 
     437      493136 : static void fill_audiodata(AudioData *out, uint8_t *in_arg [SWR_CH_MAX]){
     438             :     int i;
     439      493136 :     if(!in_arg){
     440          53 :         memset(out->ch, 0, sizeof(out->ch));
     441      493083 :     }else if(out->planar){
     442      837471 :         for(i=0; i<out->ch_count; i++)
     443      522034 :             out->ch[i]= in_arg[i];
     444             :     }else{
     445      581089 :         for(i=0; i<out->ch_count; i++)
     446      403443 :             out->ch[i]= in_arg[0] + i*out->bps;
     447             :     }
     448      493136 : }
     449             : 
     450         135 : static void reversefill_audiodata(AudioData *out, uint8_t *in_arg [SWR_CH_MAX]){
     451             :     int i;
     452         135 :     if(out->planar){
     453         270 :         for(i=0; i<out->ch_count; i++)
     454         135 :             in_arg[i]= out->ch[i];
     455             :     }else{
     456           0 :         in_arg[0]= out->ch[0];
     457             :     }
     458         135 : }
     459             : 
     460             : /**
     461             :  *
     462             :  * out may be equal in.
     463             :  */
     464      408732 : static void buf_set(AudioData *out, AudioData *in, int count){
     465             :     int ch;
     466      408732 :     if(in->planar){
     467     1031240 :         for(ch=0; ch<out->ch_count; ch++)
     468      663248 :             out->ch[ch]= in->ch[ch] + count*out->bps;
     469             :     }else{
     470      131320 :         for(ch=out->ch_count-1; ch>=0; ch--)
     471       90580 :             out->ch[ch]= in->ch[0] + (ch + count*out->ch_count) * out->bps;
     472             :     }
     473      408732 : }
     474             : 
     475             : /**
     476             :  *
     477             :  * @return number of samples output per channel
     478             :  */
     479       15795 : static int resample(SwrContext *s, AudioData *out_param, int out_count,
     480             :                              const AudioData * in_param, int in_count){
     481             :     AudioData in, out, tmp;
     482       15795 :     int ret_sum=0;
     483       15795 :     int border=0;
     484       15795 :     int padless = ARCH_X86 && s->engine == SWR_ENGINE_SWR ? 7 : 0;
     485             : 
     486             :     av_assert1(s->in_buffer.ch_count == in_param->ch_count);
     487             :     av_assert1(s->in_buffer.planar   == in_param->planar);
     488             :     av_assert1(s->in_buffer.fmt      == in_param->fmt);
     489             : 
     490       15795 :     tmp=out=*out_param;
     491       15795 :     in =  *in_param;
     492             : 
     493       15795 :     border = s->resampler->invert_initial_buffer(s->resample, &s->in_buffer,
     494             :                  &in, in_count, &s->in_buffer_index, &s->in_buffer_count);
     495       15795 :     if (border == INT_MAX) {
     496          74 :         return 0;
     497       15721 :     } else if (border < 0) {
     498           0 :         return border;
     499       15721 :     } else if (border) {
     500         665 :         buf_set(&in, &in, border);
     501         665 :         in_count -= border;
     502         665 :         s->resample_in_constraint = 0;
     503             :     }
     504             : 
     505       27869 :     do{
     506             :         int ret, size, consumed;
     507       43590 :         if(!s->resample_in_constraint && s->in_buffer_count){
     508       39312 :             buf_set(&tmp, &s->in_buffer, s->in_buffer_index);
     509       39312 :             ret= s->resampler->multiple_resample(s->resample, &out, out_count, &tmp, s->in_buffer_count, &consumed);
     510       39312 :             out_count -= ret;
     511       39312 :             ret_sum += ret;
     512       39312 :             buf_set(&out, &out, ret);
     513       39312 :             s->in_buffer_count -= consumed;
     514       39312 :             s->in_buffer_index += consumed;
     515             : 
     516       39312 :             if(!in_count)
     517       31438 :                 break;
     518       23595 :             if(s->in_buffer_count <= border){
     519       14043 :                 buf_set(&in, &in, -s->in_buffer_count);
     520       14043 :                 in_count += s->in_buffer_count;
     521       14043 :                 s->in_buffer_count=0;
     522       14043 :                 s->in_buffer_index=0;
     523       14043 :                 border = 0;
     524             :             }
     525             :         }
     526             : 
     527       27873 :         if((s->flushed || in_count > padless) && !s->in_buffer_count){
     528       14059 :             s->in_buffer_index=0;
     529       14059 :             ret= s->resampler->multiple_resample(s->resample, &out, out_count, &in, FFMAX(in_count-padless, 0), &consumed);
     530       14059 :             out_count -= ret;
     531       14059 :             ret_sum += ret;
     532       14059 :             buf_set(&out, &out, ret);
     533       14059 :             in_count -= consumed;
     534       14059 :             buf_set(&in, &in, consumed);
     535             :         }
     536             : 
     537             :         //TODO is this check sane considering the advanced copy avoidance below
     538       27873 :         size= s->in_buffer_index + s->in_buffer_count + in_count;
     539       27873 :         if(   size > s->in_buffer.count
     540         687 :            && s->in_buffer_count + in_count <= s->in_buffer_index){
     541           0 :             buf_set(&tmp, &s->in_buffer, s->in_buffer_index);
     542           0 :             copy(&s->in_buffer, &tmp, s->in_buffer_count);
     543           0 :             s->in_buffer_index=0;
     544             :         }else
     545       27873 :             if((ret=swri_realloc_audio(&s->in_buffer, size)) < 0)
     546           0 :                 return ret;
     547             : 
     548       27873 :         if(in_count){
     549       27869 :             int count= in_count;
     550       27869 :             if(s->in_buffer_count && s->in_buffer_count+2 < count && out_count) count= s->in_buffer_count+2;
     551             : 
     552       27869 :             buf_set(&tmp, &s->in_buffer, s->in_buffer_index + s->in_buffer_count);
     553       27869 :             copy(&tmp, &in, /*in_*/count);
     554       27869 :             s->in_buffer_count += count;
     555       27869 :             in_count -= count;
     556       27869 :             border += count;
     557       27869 :             buf_set(&in, &in, count);
     558       27869 :             s->resample_in_constraint= 0;
     559       27869 :             if(s->in_buffer_count != count || in_count)
     560       41683 :                 continue;
     561       14055 :             if (padless) {
     562       14055 :                 padless = 0;
     563       14055 :                 continue;
     564             :             }
     565             :         }
     566           4 :         break;
     567             :     }while(1);
     568             : 
     569       15721 :     s->resample_in_constraint= !!out_count;
     570             : 
     571       15721 :     return ret_sum;
     572             : }
     573             : 
     574      247183 : static int swr_convert_internal(struct SwrContext *s, AudioData *out, int out_count,
     575             :                                                       AudioData *in , int  in_count){
     576             :     AudioData *postin, *midbuf, *preout;
     577             :     int ret/*, in_max*/;
     578             :     AudioData preout_tmp, midbuf_tmp;
     579             : 
     580      247183 :     if(s->full_convert){
     581      228819 :         av_assert0(!s->resample);
     582      228819 :         swri_audio_convert(s->full_convert, out, in, in_count);
     583      228819 :         return out_count;
     584             :     }
     585             : 
     586             : //     in_max= out_count*(int64_t)s->in_sample_rate / s->out_sample_rate + resample_filter_taps;
     587             : //     in_count= FFMIN(in_count, in_in + 2 - s->hist_buffer_count);
     588             : 
     589       18364 :     if((ret=swri_realloc_audio(&s->postin, in_count))<0)
     590           0 :         return ret;
     591       18364 :     if(s->resample_first){
     592       14714 :         av_assert0(s->midbuf.ch_count == s->used_ch_count);
     593       14714 :         if((ret=swri_realloc_audio(&s->midbuf, out_count))<0)
     594           0 :             return ret;
     595             :     }else{
     596        3650 :         av_assert0(s->midbuf.ch_count ==  s->out.ch_count);
     597        3650 :         if((ret=swri_realloc_audio(&s->midbuf,  in_count))<0)
     598           0 :             return ret;
     599             :     }
     600       18364 :     if((ret=swri_realloc_audio(&s->preout, out_count))<0)
     601           0 :         return ret;
     602             : 
     603       18364 :     postin= &s->postin;
     604             : 
     605       18364 :     midbuf_tmp= s->midbuf;
     606       18364 :     midbuf= &midbuf_tmp;
     607       18364 :     preout_tmp= s->preout;
     608       18364 :     preout= &preout_tmp;
     609             : 
     610       18364 :     if(s->int_sample_fmt == s-> in_sample_fmt && s->in.planar && !s->channel_map)
     611       12476 :         postin= in;
     612             : 
     613       18364 :     if(s->resample_first ? !s->resample : !s->rematrix)
     614        5463 :         midbuf= postin;
     615             : 
     616       18364 :     if(s->resample_first ? !s->rematrix : !s->resample)
     617       14615 :         preout= midbuf;
     618             : 
     619       18364 :     if(s->int_sample_fmt == s->out_sample_fmt && s->out.planar
     620       11798 :        && !(s->out_sample_fmt==AV_SAMPLE_FMT_S32P && (s->dither.output_sample_bits&31))){
     621       11798 :         if(preout==in){
     622           0 :             out_count= FFMIN(out_count, in_count); //TODO check at the end if this is needed or redundant
     623           0 :             av_assert0(s->in.planar); //we only support planar internally so it has to be, we support copying non planar though
     624           0 :             copy(out, in, out_count);
     625           0 :             return out_count;
     626             :         }
     627       11798 :         else if(preout==postin) preout= midbuf= postin= out;
     628       11798 :         else if(preout==midbuf) preout= midbuf= out;
     629        1149 :         else                    preout= out;
     630             :     }
     631             : 
     632       18364 :     if(in != postin){
     633        5888 :         swri_audio_convert(s->in_convert, postin, in, in_count);
     634             :     }
     635             : 
     636       18364 :     if(s->resample_first){
     637       14714 :         if(postin != midbuf)
     638       12639 :             out_count= resample(s, midbuf, out_count, postin, in_count);
     639       14714 :         if(midbuf != preout)
     640         593 :             swri_rematrix(s, preout, midbuf, out_count, preout==out);
     641             :     }else{
     642        3650 :         if(postin != midbuf)
     643         262 :             swri_rematrix(s, midbuf, postin, in_count, midbuf==out);
     644        3650 :         if(midbuf != preout)
     645        3156 :             out_count= resample(s, preout, out_count, midbuf, in_count);
     646             :     }
     647             : 
     648       18364 :     if(preout != out && out_count){
     649        6242 :         AudioData *conv_src = preout;
     650        6242 :         if(s->dither.method){
     651             :             int ch;
     652           0 :             int dither_count= FFMAX(out_count, 1<<16);
     653             : 
     654           0 :             if (preout == in) {
     655           0 :                 conv_src = &s->dither.temp;
     656           0 :                 if((ret=swri_realloc_audio(&s->dither.temp, dither_count))<0)
     657           0 :                     return ret;
     658             :             }
     659             : 
     660           0 :             if((ret=swri_realloc_audio(&s->dither.noise, dither_count))<0)
     661           0 :                 return ret;
     662           0 :             if(ret)
     663           0 :                 for(ch=0; ch<s->dither.noise.ch_count; ch++)
     664           0 :                     if((ret=swri_get_dither(s, s->dither.noise.ch[ch], s->dither.noise.count, (12345678913579ULL*ch + 3141592) % 2718281828U, s->dither.noise.fmt))<0)
     665           0 :                         return ret;
     666           0 :             av_assert0(s->dither.noise.ch_count == preout->ch_count);
     667             : 
     668           0 :             if(s->dither.noise_pos + out_count > s->dither.noise.count)
     669           0 :                 s->dither.noise_pos = 0;
     670             : 
     671           0 :             if (s->dither.method < SWR_DITHER_NS){
     672           0 :                 if (s->mix_2_1_simd) {
     673           0 :                     int len1= out_count&~15;
     674           0 :                     int off = len1 * preout->bps;
     675             : 
     676           0 :                     if(len1)
     677           0 :                         for(ch=0; ch<preout->ch_count; ch++)
     678           0 :                             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);
     679           0 :                     if(out_count != len1)
     680           0 :                         for(ch=0; ch<preout->ch_count; ch++)
     681           0 :                             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);
     682             :                 } else {
     683           0 :                     for(ch=0; ch<preout->ch_count; ch++)
     684           0 :                         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);
     685             :                 }
     686             :             } else {
     687           0 :                 switch(s->int_sample_fmt) {
     688           0 :                 case AV_SAMPLE_FMT_S16P :swri_noise_shaping_int16(s, conv_src, preout, &s->dither.noise, out_count); break;
     689           0 :                 case AV_SAMPLE_FMT_S32P :swri_noise_shaping_int32(s, conv_src, preout, &s->dither.noise, out_count); break;
     690           0 :                 case AV_SAMPLE_FMT_FLTP :swri_noise_shaping_float(s, conv_src, preout, &s->dither.noise, out_count); break;
     691           0 :                 case AV_SAMPLE_FMT_DBLP :swri_noise_shaping_double(s,conv_src, preout, &s->dither.noise, out_count); break;
     692             :                 }
     693             :             }
     694           0 :             s->dither.noise_pos += out_count;
     695             :         }
     696             : //FIXME packed doesn't need more than 1 chan here!
     697        6242 :         swri_audio_convert(s->out_convert, out, conv_src, out_count);
     698             :     }
     699       18364 :     return out_count;
     700             : }
     701             : 
     702      283440 : int swr_is_initialized(struct SwrContext *s) {
     703      283440 :     return !!s->in_buffer.ch_count;
     704             : }
     705             : 
     706      247783 : int attribute_align_arg swr_convert(struct SwrContext *s, uint8_t *out_arg[SWR_CH_MAX], int out_count,
     707             :                                                     const uint8_t *in_arg [SWR_CH_MAX], int  in_count){
     708      247783 :     AudioData * in= &s->in;
     709      247783 :     AudioData *out= &s->out;
     710             :     int av_unused max_output;
     711             : 
     712      247783 :     if (!swr_is_initialized(s)) {
     713           0 :         av_log(s, AV_LOG_ERROR, "Context has not been initialized\n");
     714           0 :         return AVERROR(EINVAL);
     715             :     }
     716             : #if defined(ASSERT_LEVEL) && ASSERT_LEVEL >1
     717             :     max_output = swr_get_out_samples(s, in_count);
     718             : #endif
     719             : 
     720      495618 :     while(s->drop_output > 0){
     721             :         int ret;
     722             :         uint8_t *tmp_arg[SWR_CH_MAX];
     723             : #define MAX_DROP_STEP 16384
     724         104 :         if((ret=swri_realloc_audio(&s->drop_temp, FFMIN(s->drop_output, MAX_DROP_STEP)))<0)
     725          52 :             return ret;
     726             : 
     727         104 :         reversefill_audiodata(&s->drop_temp, tmp_arg);
     728         104 :         s->drop_output *= -1; //FIXME find a less hackish solution
     729         104 :         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
     730         104 :         s->drop_output *= -1;
     731         104 :         in_count = 0;
     732         104 :         if(ret>0) {
     733          52 :             s->drop_output -= ret;
     734          52 :             if (!s->drop_output && !out_arg)
     735           0 :                 return 0;
     736          52 :             continue;
     737             :         }
     738             : 
     739          52 :         av_assert0(s->drop_output);
     740          52 :         return 0;
     741             :     }
     742             : 
     743      247731 :     if(!in_arg){
     744        1811 :         if(s->resample){
     745        1296 :             if (!s->flushed)
     746         662 :                 s->resampler->flush(s);
     747        1296 :             s->resample_in_constraint = 0;
     748        1296 :             s->flushed = 1;
     749         515 :         }else if(!s->in_buffer_count){
     750         515 :             return 0;
     751             :         }
     752             :     }else
     753      245920 :         fill_audiodata(in ,  (void*)in_arg);
     754             : 
     755      247216 :     fill_audiodata(out, out_arg);
     756             : 
     757      247216 :     if(s->resample){
     758       15795 :         int ret = swr_convert_internal(s, out, out_count, in, in_count);
     759       15795 :         if(ret>0 && !s->drop_output)
     760       15019 :             s->outpts += ret * (int64_t)s->in_sample_rate;
     761             : 
     762             :         av_assert2(max_output < 0 || ret < 0 || ret <= max_output);
     763             : 
     764       15795 :         return ret;
     765             :     }else{
     766      231421 :         AudioData tmp= *in;
     767      231421 :         int ret2=0;
     768             :         int ret, size;
     769      231421 :         size = FFMIN(out_count, s->in_buffer_count);
     770      231421 :         if(size){
     771         123 :             buf_set(&tmp, &s->in_buffer, s->in_buffer_index);
     772         123 :             ret= swr_convert_internal(s, out, size, &tmp, size);
     773         123 :             if(ret<0)
     774           0 :                 return ret;
     775         123 :             ret2= ret;
     776         123 :             s->in_buffer_count -= ret;
     777         123 :             s->in_buffer_index += ret;
     778         123 :             buf_set(out, out, ret);
     779         123 :             out_count -= ret;
     780         123 :             if(!s->in_buffer_count)
     781           2 :                 s->in_buffer_index = 0;
     782             :         }
     783             : 
     784      231421 :         if(in_count){
     785      231298 :             size= s->in_buffer_index + s->in_buffer_count + in_count - out_count;
     786             : 
     787      231298 :             if(in_count > out_count) { //FIXME move after swr_convert_internal
     788          33 :                 if(   size > s->in_buffer.count
     789           4 :                 && s->in_buffer_count + in_count - out_count <= s->in_buffer_index){
     790           0 :                     buf_set(&tmp, &s->in_buffer, s->in_buffer_index);
     791           0 :                     copy(&s->in_buffer, &tmp, s->in_buffer_count);
     792           0 :                     s->in_buffer_index=0;
     793             :                 }else
     794          33 :                     if((ret=swri_realloc_audio(&s->in_buffer, size)) < 0)
     795           0 :                         return ret;
     796             :             }
     797             : 
     798      231298 :             if(out_count){
     799      231265 :                 size = FFMIN(in_count, out_count);
     800      231265 :                 ret= swr_convert_internal(s, out, size, in, size);
     801      231265 :                 if(ret<0)
     802           0 :                     return ret;
     803      231265 :                 buf_set(in, in, ret);
     804      231265 :                 in_count -= ret;
     805      231265 :                 ret2 += ret;
     806             :             }
     807      231298 :             if(in_count){
     808          33 :                 buf_set(&tmp, &s->in_buffer, s->in_buffer_index + s->in_buffer_count);
     809          33 :                 copy(&tmp, in, in_count);
     810          33 :                 s->in_buffer_count += in_count;
     811             :             }
     812             :         }
     813      231421 :         if(ret2>0 && !s->drop_output)
     814      231388 :             s->outpts += ret2 * (int64_t)s->in_sample_rate;
     815             :         av_assert2(max_output < 0 || ret2 < 0 || ret2 <= max_output);
     816      231421 :         return ret2;
     817             :     }
     818             : }
     819             : 
     820          52 : int swr_drop_output(struct SwrContext *s, int count){
     821             :     const uint8_t *tmp_arg[SWR_CH_MAX];
     822          52 :     s->drop_output += count;
     823             : 
     824          52 :     if(s->drop_output <= 0)
     825           0 :         return 0;
     826             : 
     827          52 :     av_log(s, AV_LOG_VERBOSE, "discarding %d audio samples\n", count);
     828          52 :     return swr_convert(s, NULL, s->drop_output, tmp_arg, 0);
     829             : }
     830             : 
     831          31 : int swr_inject_silence(struct SwrContext *s, int count){
     832             :     int ret, i;
     833             :     uint8_t *tmp_arg[SWR_CH_MAX];
     834             : 
     835          31 :     if(count <= 0)
     836           0 :         return 0;
     837             : 
     838             : #define MAX_SILENCE_STEP 16384
     839          91 :     while (count > MAX_SILENCE_STEP) {
     840          29 :         if ((ret = swr_inject_silence(s, MAX_SILENCE_STEP)) < 0)
     841           0 :             return ret;
     842          29 :         count -= MAX_SILENCE_STEP;
     843             :     }
     844             : 
     845          31 :     if((ret=swri_realloc_audio(&s->silence, count))<0)
     846           0 :         return ret;
     847             : 
     848          62 :     if(s->silence.planar) for(i=0; i<s->silence.ch_count; i++) {
     849          31 :         memset(s->silence.ch[i], s->silence.bps==1 ? 0x80 : 0, count*s->silence.bps);
     850             :     } else
     851           0 :         memset(s->silence.ch[0], s->silence.bps==1 ? 0x80 : 0, count*s->silence.bps*s->silence.ch_count);
     852             : 
     853          31 :     reversefill_audiodata(&s->silence, tmp_arg);
     854          31 :     av_log(s, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", count);
     855          31 :     ret = swr_convert(s, NULL, 0, (const uint8_t**)tmp_arg, count);
     856          31 :     return ret;
     857             : }
     858             : 
     859      467074 : int64_t swr_get_delay(struct SwrContext *s, int64_t base){
     860      467074 :     if (s->resampler && s->resample){
     861        9824 :         return s->resampler->get_delay(s, base);
     862             :     }else{
     863      457250 :         return (s->in_buffer_count*base + (s->in_sample_rate>>1))/ s->in_sample_rate;
     864             :     }
     865             : }
     866             : 
     867           0 : int swr_get_out_samples(struct SwrContext *s, int in_samples)
     868             : {
     869             :     int64_t out_samples;
     870             : 
     871           0 :     if (in_samples < 0)
     872           0 :         return AVERROR(EINVAL);
     873             : 
     874           0 :     if (s->resampler && s->resample) {
     875           0 :         if (!s->resampler->get_out_samples)
     876           0 :             return AVERROR(ENOSYS);
     877           0 :         out_samples = s->resampler->get_out_samples(s, in_samples);
     878             :     } else {
     879           0 :         out_samples = s->in_buffer_count + in_samples;
     880           0 :         av_assert0(s->out_sample_rate == s->in_sample_rate);
     881             :     }
     882             : 
     883           0 :     if (out_samples > INT_MAX)
     884           0 :         return AVERROR(EINVAL);
     885             : 
     886           0 :     return out_samples;
     887             : }
     888             : 
     889         122 : int swr_set_compensation(struct SwrContext *s, int sample_delta, int compensation_distance){
     890             :     int ret;
     891             : 
     892         122 :     if (!s || compensation_distance < 0)
     893           0 :         return AVERROR(EINVAL);
     894         122 :     if (!compensation_distance && sample_delta)
     895           0 :         return AVERROR(EINVAL);
     896         122 :     if (!s->resample) {
     897           0 :         s->flags |= SWR_FLAG_RESAMPLE;
     898           0 :         ret = swr_init(s);
     899           0 :         if (ret < 0)
     900           0 :             return ret;
     901             :     }
     902         122 :     if (!s->resampler->set_compensation){
     903           0 :         return AVERROR(EINVAL);
     904             :     }else{
     905         122 :         return s->resampler->set_compensation(s->resample, sample_delta, compensation_distance);
     906             :     }
     907             : }
     908             : 
     909      236220 : int64_t swr_next_pts(struct SwrContext *s, int64_t pts){
     910      236220 :     if(pts == INT64_MIN)
     911        3449 :         return s->outpts;
     912             : 
     913      232771 :     if (s->firstpts == AV_NOPTS_VALUE)
     914        1109 :         s->outpts = s->firstpts = pts;
     915             : 
     916      232771 :     if(s->min_compensation >= FLT_MAX) {
     917      231556 :         return (s->outpts = pts - swr_get_delay(s, s->in_sample_rate * (int64_t)s->out_sample_rate));
     918             :     } else {
     919        1215 :         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;
     920        1215 :         double fdelta = delta /(double)(s->in_sample_rate * (int64_t)s->out_sample_rate);
     921             : 
     922        1215 :         if(fabs(fdelta) > s->min_compensation) {
     923         230 :             if(s->outpts == s->firstpts || fabs(fdelta) > s->min_hard_compensation){
     924             :                 int ret;
     925          54 :                 if(delta > 0) ret = swr_inject_silence(s,  delta / s->out_sample_rate);
     926          52 :                 else          ret = swr_drop_output   (s, -delta / s-> in_sample_rate);
     927          54 :                 if(ret<0){
     928           0 :                     av_log(s, AV_LOG_ERROR, "Failed to compensate for timestamp delta of %f\n", fdelta);
     929             :                 }
     930         122 :             } else if(s->soft_compensation_duration && s->max_soft_compensation) {
     931         122 :                 int duration = s->out_sample_rate * s->soft_compensation_duration;
     932         122 :                 double max_soft_compensation = s->max_soft_compensation / (s->max_soft_compensation < 0 ? -s->in_sample_rate : 1);
     933         122 :                 int comp = av_clipf(fdelta, -max_soft_compensation, max_soft_compensation) * duration ;
     934         122 :                 av_log(s, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n", fdelta, comp, duration);
     935         122 :                 swr_set_compensation(s, comp, duration);
     936             :             }
     937             :         }
     938             : 
     939        1215 :         return s->outpts;
     940             :     }
     941             : }

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