source: src/io/source_avcodec.c @ bad88364

sampler
Last change on this file since bad88364 was bad88364, checked in by Paul Brossier <piem@piem.org>, 3 years ago

Merge branch 'master' into sampler

  • Property mode set to 100644
File size: 19.4 KB
Line 
1/*
2  Copyright (C) 2013 Paul Brossier <piem@aubio.org>
3
4  This file is part of aubio.
5
6  aubio is free software: you can redistribute it and/or modify
7  it under the terms of the GNU General Public License as published by
8  the Free Software Foundation, either version 3 of the License, or
9  (at your option) any later version.
10
11  aubio 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
14  GNU General Public License for more details.
15
16  You should have received a copy of the GNU General Public License
17  along with aubio.  If not, see <http://www.gnu.org/licenses/>.
18
19*/
20
21#include "aubio_priv.h"
22
23#ifdef HAVE_LIBAV
24
25#include <libavcodec/avcodec.h>
26#include <libavformat/avformat.h>
27#if defined(HAVE_SWRESAMPLE)
28#include <libswresample/swresample.h>
29#elif defined(HAVE_AVRESAMPLE)
30#include <libavresample/avresample.h>
31#endif
32#include <libavutil/opt.h>
33#include <stdlib.h>
34
35// determine whether we use libavformat from ffmpeg or from libav
36#define FFMPEG_LIBAVFORMAT (LIBAVFORMAT_VERSION_MICRO > 99 )
37// max_analyze_duration2 was used from ffmpeg libavformat 55.43.100 through 57.2.100
38#define FFMPEG_LIBAVFORMAT_MAX_DUR2 FFMPEG_LIBAVFORMAT && ( \
39      (LIBAVFORMAT_VERSION_MAJOR == 55 && LIBAVFORMAT_VERSION_MINOR >= 43) \
40      || (LIBAVFORMAT_VERSION_MAJOR == 56) \
41      || (LIBAVFORMAT_VERSION_MAJOR == 57 && LIBAVFORMAT_VERSION_MINOR < 2) \
42      )
43
44// backward compatibility with libavcodec55
45#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55,28,1)
46#warning "libavcodec55 is deprecated"
47#define HAVE_AUBIO_LIBAVCODEC_DEPRECATED 1
48#define av_frame_alloc  avcodec_alloc_frame
49#define av_frame_free avcodec_free_frame
50#define av_packet_unref av_free_packet
51#endif
52
53#include "aubio_priv.h"
54#include "fvec.h"
55#include "fmat.h"
56#include "source_avcodec.h"
57
58#define AUBIO_AVCODEC_MAX_BUFFER_SIZE FF_MIN_BUFFER_SIZE
59
60#ifdef HAVE_PTHREAD_H
61// Global mutex to make sure avcodec_open2 is not called simultaneously in a
62// multithreaded environment. Comment the following define if no lock required.
63#define HAVE_AUBIO_AVCODEC_MUTEX
64#include <pthread.h>
65pthread_mutex_t aubio_avcodec_mutex = PTHREAD_MUTEX_INITIALIZER;
66#endif /* HAVE_PTHREAD_H */
67
68struct _aubio_source_avcodec_t {
69  uint_t hop_size;
70  uint_t samplerate;
71  uint_t channels;
72
73  // some data about the file
74  char_t *path;
75  uint_t input_samplerate;
76  uint_t input_channels;
77
78  // avcodec stuff
79  AVFormatContext *avFormatCtx;
80  AVCodecContext *avCodecCtx;
81  AVFrame *avFrame;
82  AVPacket avPacket;
83#ifdef HAVE_AVRESAMPLE
84  AVAudioResampleContext *avr;
85#elif defined(HAVE_SWRESAMPLE)
86  SwrContext *avr;
87#endif
88  smpl_t *output;
89  uint_t read_samples;
90  uint_t read_index;
91  sint_t selected_stream;
92  uint_t eof;
93  uint_t multi;
94  uint_t has_network_url;
95};
96
97// hack to create or re-create the context the first time _do or _do_multi is called
98void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s, uint_t multi);
99void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s, uint_t * read_samples);
100
101uint_t aubio_source_avcodec_has_network_url(aubio_source_avcodec_t *s);
102
103uint_t aubio_source_avcodec_has_network_url(aubio_source_avcodec_t *s) {
104  char proto[20], authorization[256], hostname[128], uripath[256];
105  int proto_size = 20, authorization_size = 256, hostname_size = 128,
106      *port_ptr = 0, path_size = 256;
107  av_url_split(proto, proto_size, authorization, authorization_size, hostname,
108      hostname_size, port_ptr, uripath, path_size, s->path);
109  s->has_network_url = 0;
110  if (strlen(proto)) {
111    s->has_network_url = 1;
112  }
113  return s->has_network_url;
114}
115
116
117aubio_source_avcodec_t * new_aubio_source_avcodec(const char_t * path, uint_t samplerate, uint_t hop_size) {
118  aubio_source_avcodec_t * s = AUBIO_NEW(aubio_source_avcodec_t);
119  int err;
120  if (path == NULL) {
121    AUBIO_ERR("source_avcodec: Aborted opening null path\n");
122    goto beach;
123  }
124  if ((sint_t)samplerate < 0) {
125    AUBIO_ERR("source_avcodec: Can not open %s with samplerate %d\n", path, samplerate);
126    goto beach;
127  }
128  if ((sint_t)hop_size <= 0) {
129    AUBIO_ERR("source_avcodec: Can not open %s with hop_size %d\n", path, hop_size);
130    goto beach;
131  }
132
133  s->hop_size = hop_size;
134  s->channels = 1;
135
136  if (s->path) AUBIO_FREE(s->path);
137  s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);
138  strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);
139
140#ifdef HAVE_AUBIO_AVCODEC_MUTEX
141  pthread_mutex_lock(&aubio_avcodec_mutex);
142#endif /* HAVE_AUBIO_AVCODEC_MUTEX */
143
144  // register all formats and codecs
145  av_register_all();
146
147  if (aubio_source_avcodec_has_network_url(s)) {
148    avformat_network_init();
149  }
150
151  // try opening the file and get some info about it
152  AVFormatContext *avFormatCtx = s->avFormatCtx;
153  AVDictionary *streamopts = 0;
154  if (s->has_network_url) {
155    if (av_dict_set(&streamopts, "timeout", "1000000", 0)) { // in microseconds
156      AUBIO_WRN("source_avcodec: Failed setting timeout to 1000000 for %s\n", s->path);
157    } else {
158      AUBIO_WRN("source_avcodec: Setting timeout to 1000000 for %s\n", s->path);
159    }
160  }
161  avFormatCtx = NULL;
162  if ( (err = avformat_open_input(&avFormatCtx, s->path, NULL, &streamopts) ) < 0 ) {
163    char errorstr[256];
164    av_strerror (err, errorstr, sizeof(errorstr));
165    AUBIO_ERR("source_avcodec: Failed opening %s (%s)\n", s->path, errorstr);
166    goto beach_streamopts;
167  }
168
169  // try to make sure max_analyze_duration is big enough for most songs
170#if FFMPEG_LIBAVFORMAT_MAX_DUR2
171  avFormatCtx->max_analyze_duration2 *= 100;
172#else
173  avFormatCtx->max_analyze_duration *= 100;
174#endif
175
176  // retrieve stream information
177  if ( (err = avformat_find_stream_info(avFormatCtx, NULL)) < 0 ) {
178    char errorstr[256];
179    av_strerror (err, errorstr, sizeof(errorstr));
180    AUBIO_ERR("source_avcodec: Could not find stream information " "for %s (%s)\n", s->path,
181        errorstr);
182    goto beach;
183  }
184
185  // dump information about file onto standard error
186  //av_dump_format(avFormatCtx, 0, s->path, 0);
187
188  // look for the first audio stream
189  uint_t i;
190  sint_t selected_stream = -1;
191  for (i = 0; i < avFormatCtx->nb_streams; i++) {
192#if FF_API_LAVF_AVCTX
193    if (avFormatCtx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
194#else
195    if (avFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
196#endif
197      if (selected_stream == -1) {
198        selected_stream = i;
199      } else {
200        AUBIO_WRN("source_avcodec: More than one audio stream in %s, "
201            "taking the first one\n", s->path);
202      }
203    }
204  }
205  if (selected_stream == -1) {
206    AUBIO_ERR("source_avcodec: No audio stream in %s\n", s->path);
207    goto beach;
208  }
209  //AUBIO_DBG("Taking stream %d in file %s\n", selected_stream, s->path);
210  s->selected_stream = selected_stream;
211
212  AVCodecContext *avCodecCtx = s->avCodecCtx;
213#if FF_API_LAVF_AVCTX
214  AVCodecParameters *codecpar = avFormatCtx->streams[selected_stream]->codecpar;
215  if (codecpar == NULL) {
216    AUBIO_ERR("source_avcodec: Could not find decoder for %s", s->path);
217    goto beach;
218  }
219  AVCodec *codec = avcodec_find_decoder(codecpar->codec_id);
220
221  /* Allocate a codec context for the decoder */
222  avCodecCtx = avcodec_alloc_context3(codec);
223  if (!avCodecCtx) {
224    AUBIO_ERR("source_avcodec: Failed to allocate the %s codec context for path %s\n",
225        av_get_media_type_string(AVMEDIA_TYPE_AUDIO), s->path);
226    goto beach;
227  }
228#else
229  avCodecCtx = avFormatCtx->streams[selected_stream]->codec;
230  AVCodec *codec = avcodec_find_decoder(avCodecCtx->codec_id);
231#endif
232  if (codec == NULL) {
233    AUBIO_ERR("source_avcodec: Could not find decoder for %s", s->path);
234    goto beach;
235  }
236
237#if FF_API_LAVF_AVCTX
238  /* Copy codec parameters from input stream to output codec context */
239  if ((err = avcodec_parameters_to_context(avCodecCtx, codecpar)) < 0) {
240    AUBIO_ERR("source_avcodec: Failed to copy %s codec parameters to decoder context for %s\n",
241       av_get_media_type_string(AVMEDIA_TYPE_AUDIO), s->path);
242    goto beach;
243  }
244#endif
245
246  if ( ( err = avcodec_open2(avCodecCtx, codec, NULL) ) < 0) {
247    char errorstr[256];
248    av_strerror (err, errorstr, sizeof(errorstr));
249    AUBIO_ERR("source_avcodec: Could not load codec for %s (%s)\n", s->path, errorstr);
250    goto beach;
251  }
252
253#ifdef HAVE_AUBIO_AVCODEC_MUTEX
254  pthread_mutex_unlock(&aubio_avcodec_mutex);
255#endif /* HAVE_AUBIO_AVCODEC_MUTEX */
256
257  /* get input specs */
258  s->input_samplerate = avCodecCtx->sample_rate;
259  s->input_channels   = avCodecCtx->channels;
260  //AUBIO_DBG("input_samplerate: %d\n", s->input_samplerate);
261  //AUBIO_DBG("input_channels: %d\n", s->input_channels);
262
263  if (samplerate == 0) {
264    s->samplerate = s->input_samplerate;
265  } else {
266    s->samplerate = samplerate;
267  }
268
269  if (s->samplerate >  s->input_samplerate) {
270    AUBIO_WRN("source_avcodec: upsampling %s from %d to %d\n", s->path,
271        s->input_samplerate, s->samplerate);
272  }
273
274  AVFrame *avFrame = s->avFrame;
275  avFrame = av_frame_alloc();
276  if (!avFrame) {
277    AUBIO_ERR("source_avcodec: Could not allocate frame for (%s)\n", s->path);
278  }
279
280  /* allocate output for avr */
281  s->output = (smpl_t *)av_malloc(AUBIO_AVCODEC_MAX_BUFFER_SIZE * sizeof(smpl_t));
282
283  s->read_samples = 0;
284  s->read_index = 0;
285
286  s->avFormatCtx = avFormatCtx;
287  s->avCodecCtx = avCodecCtx;
288  s->avFrame = avFrame;
289
290  // default to mono output
291  aubio_source_avcodec_reset_resampler(s, 0);
292
293  s->eof = 0;
294  s->multi = 0;
295
296  //av_log_set_level(AV_LOG_QUIET);
297
298  av_dict_free(&streamopts);
299  return s;
300
301beach_streamopts:
302  av_dict_free(&streamopts);
303beach:
304  //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
305  //    s->path, s->samplerate, s->hop_size);
306#ifdef HAVE_AUBIO_AVCODEC_MUTEX
307  pthread_mutex_unlock(&aubio_avcodec_mutex);
308#endif /* HAVE_AUBIO_AVCODEC_MUTEX */
309  del_aubio_source_avcodec(s);
310  return NULL;
311}
312
313void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s, uint_t multi) {
314  // create or reset resampler to/from mono/multi-channel
315  if ( (multi != s->multi) || (s->avr == NULL) ) {
316    int64_t input_layout = av_get_default_channel_layout(s->input_channels);
317    uint_t output_channels = multi ? s->input_channels : 1;
318    int64_t output_layout = av_get_default_channel_layout(output_channels);
319#ifdef HAVE_AVRESAMPLE
320    AVAudioResampleContext *avr = avresample_alloc_context();
321    AVAudioResampleContext *oldavr = s->avr;
322#elif defined(HAVE_SWRESAMPLE)
323    SwrContext *avr = swr_alloc();
324    SwrContext *oldavr = s->avr;
325#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
326
327    av_opt_set_int(avr, "in_channel_layout",  input_layout,           0);
328    av_opt_set_int(avr, "out_channel_layout", output_layout,          0);
329    av_opt_set_int(avr, "in_sample_rate",     s->input_samplerate,    0);
330    av_opt_set_int(avr, "out_sample_rate",    s->samplerate,          0);
331    av_opt_set_int(avr, "in_sample_fmt",      s->avCodecCtx->sample_fmt, 0);
332#if HAVE_AUBIO_DOUBLE
333    av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_DBL,      0);
334#else
335    av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLT,      0);
336#endif
337    // TODO: use planar?
338    //av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLTP,      0);
339    int err;
340#ifdef HAVE_AVRESAMPLE
341    if ( ( err = avresample_open(avr) ) < 0) {
342#elif defined(HAVE_SWRESAMPLE)
343    if ( ( err = swr_init(avr) ) < 0) {
344#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
345      char errorstr[256];
346      av_strerror (err, errorstr, sizeof(errorstr));
347      AUBIO_ERR("source_avcodec: Could not open AVAudioResampleContext for %s (%s)\n",
348          s->path, errorstr);
349      //goto beach;
350      return;
351    }
352    s->avr = avr;
353    if (oldavr != NULL) {
354#ifdef HAVE_AVRESAMPLE
355      avresample_close( oldavr );
356#elif defined(HAVE_SWRESAMPLE)
357      swr_close ( oldavr );
358#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
359      av_free ( oldavr );
360      oldavr = NULL;
361    }
362    s->multi = multi;
363  }
364}
365
366void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s, uint_t * read_samples) {
367  AVFormatContext *avFormatCtx = s->avFormatCtx;
368  AVCodecContext *avCodecCtx = s->avCodecCtx;
369  AVFrame *avFrame = s->avFrame;
370  AVPacket avPacket = s->avPacket;
371  av_init_packet (&avPacket);
372#ifdef HAVE_AVRESAMPLE
373  AVAudioResampleContext *avr = s->avr;
374#elif defined(HAVE_SWRESAMPLE)
375  SwrContext *avr = s->avr;
376#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
377  smpl_t *output = s->output;
378  *read_samples = 0;
379
380  do
381  {
382    int err = av_read_frame (avFormatCtx, &avPacket);
383    if (err == AVERROR_EOF) {
384      s->eof = 1;
385      goto beach;
386    }
387    if (err != 0) {
388      char errorstr[256];
389      av_strerror (err, errorstr, sizeof(errorstr));
390      AUBIO_ERR("source_avcodec: could not read frame in %s (%s)\n", s->path, errorstr);
391      goto beach;
392    }
393  } while (avPacket.stream_index != s->selected_stream);
394
395  int got_frame = 0;
396#if FF_API_LAVF_AVCTX
397  int ret = avcodec_send_packet(avCodecCtx, &avPacket);
398  if (ret < 0 && ret != AVERROR_EOF) {
399    AUBIO_ERR("source_avcodec: error when sending packet for %s\n", s->path);
400    goto beach;
401  }
402  ret = avcodec_receive_frame(avCodecCtx, avFrame);
403  if (ret >= 0) {
404    got_frame = 1;
405  }
406  if (ret < 0) {
407    if (ret == AVERROR(EAGAIN)) {
408      AUBIO_WRN("source_avcodec: output is not available right now - user must try to send new input\n");
409    } else if (ret == AVERROR_EOF) {
410      AUBIO_WRN("source_avcodec: the decoder has been fully flushed, and there will be no more output frames\n");
411    } else {
412      AUBIO_ERR("source_avcodec: decoding errors on %s\n", s->path);
413      goto beach;
414    }
415  }
416#else
417  int len = avcodec_decode_audio4(avCodecCtx, avFrame, &got_frame, &avPacket);
418
419  if (len < 0) {
420    AUBIO_ERR("source_avcodec: error while decoding %s\n", s->path);
421    goto beach;
422  }
423#endif
424  if (got_frame == 0) {
425    AUBIO_WRN("source_avcodec: did not get a frame when reading %s\n", s->path);
426    goto beach;
427  }
428
429#ifdef HAVE_AVRESAMPLE
430  int in_linesize = 0;
431  av_samples_get_buffer_size(&in_linesize, avCodecCtx->channels,
432      avFrame->nb_samples, avCodecCtx->sample_fmt, 1);
433  int in_samples = avFrame->nb_samples;
434  int out_linesize = 0;
435  int max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE;
436  int out_samples = avresample_convert ( avr,
437        (uint8_t **)&output, out_linesize, max_out_samples,
438        (uint8_t **)avFrame->data, in_linesize, in_samples);
439#elif defined(HAVE_SWRESAMPLE)
440  int in_samples = avFrame->nb_samples;
441  int max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE / avCodecCtx->channels;
442  int out_samples = swr_convert( avr,
443      (uint8_t **)&output, max_out_samples,
444      (const uint8_t **)avFrame->data, in_samples);
445#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
446  if (out_samples <= 0) {
447    AUBIO_WRN("source_avcodec: no sample found while converting frame (%s)\n", s->path);
448    goto beach;
449  }
450
451  *read_samples = out_samples;
452
453beach:
454  s->avFormatCtx = avFormatCtx;
455  s->avCodecCtx = avCodecCtx;
456  s->avFrame = avFrame;
457#if defined(HAVE_AVRESAMPLE) || defined(HAVE_SWRESAMPLE)
458  s->avr = avr;
459#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
460  s->output = output;
461
462  av_packet_unref(&avPacket);
463}
464
465void aubio_source_avcodec_do(aubio_source_avcodec_t * s, fvec_t * read_data, uint_t * read){
466  uint_t i;
467  uint_t end = 0;
468  uint_t total_wrote = 0;
469  // switch from multi
470  if (s->multi == 1) aubio_source_avcodec_reset_resampler(s, 0);
471  while (total_wrote < s->hop_size) {
472    end = MIN(s->read_samples - s->read_index, s->hop_size - total_wrote);
473    for (i = 0; i < end; i++) {
474      read_data->data[i + total_wrote] = s->output[i + s->read_index];
475    }
476    total_wrote += end;
477    if (total_wrote < s->hop_size) {
478      uint_t avcodec_read = 0;
479      aubio_source_avcodec_readframe(s, &avcodec_read);
480      s->read_samples = avcodec_read;
481      s->read_index = 0;
482      if (s->eof) {
483        break;
484      }
485    } else {
486      s->read_index += end;
487    }
488  }
489  if (total_wrote < s->hop_size) {
490    for (i = total_wrote; i < s->hop_size; i++) {
491      read_data->data[i] = 0.;
492    }
493  }
494  *read = total_wrote;
495}
496
497void aubio_source_avcodec_do_multi(aubio_source_avcodec_t * s, fmat_t * read_data, uint_t * read){
498  uint_t i,j;
499  uint_t end = 0;
500  uint_t total_wrote = 0;
501  // switch from mono
502  if (s->multi == 0) aubio_source_avcodec_reset_resampler(s, 1);
503  while (total_wrote < s->hop_size) {
504    end = MIN(s->read_samples - s->read_index, s->hop_size - total_wrote);
505    for (j = 0; j < read_data->height; j++) {
506      for (i = 0; i < end; i++) {
507        read_data->data[j][i + total_wrote] =
508          s->output[(i + s->read_index) * s->input_channels + j];
509      }
510    }
511    total_wrote += end;
512    if (total_wrote < s->hop_size) {
513      uint_t avcodec_read = 0;
514      aubio_source_avcodec_readframe(s, &avcodec_read);
515      s->read_samples = avcodec_read;
516      s->read_index = 0;
517      if (s->eof) {
518        break;
519      }
520    } else {
521      s->read_index += end;
522    }
523  }
524  if (total_wrote < s->hop_size) {
525    for (j = 0; j < read_data->height; j++) {
526      for (i = total_wrote; i < s->hop_size; i++) {
527        read_data->data[j][i] = 0.;
528      }
529    }
530  }
531  *read = total_wrote;
532}
533
534uint_t aubio_source_avcodec_get_samplerate(const aubio_source_avcodec_t * s) {
535  return s->samplerate;
536}
537
538uint_t aubio_source_avcodec_get_channels(const aubio_source_avcodec_t * s) {
539  return s->input_channels;
540}
541
542uint_t aubio_source_avcodec_seek (aubio_source_avcodec_t * s, uint_t pos) {
543  int64_t resampled_pos = (uint_t)ROUND(pos * (s->input_samplerate * 1. / s->samplerate));
544  int64_t min_ts = MAX(resampled_pos - 2000, 0);
545  int64_t max_ts = MIN(resampled_pos + 2000, INT64_MAX);
546  int seek_flags = AVSEEK_FLAG_FRAME | AVSEEK_FLAG_ANY;
547  int ret = AUBIO_FAIL;
548  if (s->avFormatCtx != NULL && s->avr != NULL) {
549    ret = AUBIO_OK;
550  } else {
551    AUBIO_ERR("source_avcodec: failed seeking in %s (file not opened?)", s->path);
552    return ret;
553  }
554  if ((sint_t)pos < 0) {
555    AUBIO_ERR("source_avcodec: could not seek %s at %d (seeking position"
556       " should be >= 0)\n", s->path, pos);
557    return AUBIO_FAIL;
558  }
559  ret = avformat_seek_file(s->avFormatCtx, s->selected_stream,
560      min_ts, resampled_pos, max_ts, seek_flags);
561  if (ret < 0) {
562    AUBIO_ERR("source_avcodec: failed seeking to %d in file %s", pos, s->path);
563  }
564  // reset read status
565  s->eof = 0;
566  s->read_index = 0;
567  s->read_samples = 0;
568#ifdef HAVE_AVRESAMPLE
569  // reset the AVAudioResampleContext
570  avresample_close(s->avr);
571  avresample_open(s->avr);
572#elif defined(HAVE_SWRESAMPLE)
573  swr_close(s->avr);
574  swr_init(s->avr);
575#endif
576  return ret;
577}
578
579uint_t aubio_source_avcodec_get_duration (aubio_source_avcodec_t * s) {
580  if (s && &(s->avFormatCtx) != NULL) {
581    int64_t duration = s->avFormatCtx->duration;
582    return s->samplerate * ((uint_t)duration / 1e6 );
583  }
584  return 0;
585}
586
587uint_t aubio_source_avcodec_close(aubio_source_avcodec_t * s) {
588  if (s->avr != NULL) {
589#ifdef HAVE_AVRESAMPLE
590    avresample_close( s->avr );
591#elif defined(HAVE_SWRESAMPLE)
592    swr_close ( s->avr );
593#endif
594    av_free ( s->avr );
595  }
596  s->avr = NULL;
597  if (s->avCodecCtx != NULL) {
598    avcodec_close ( s->avCodecCtx );
599  }
600  s->avCodecCtx = NULL;
601  if (s->avFormatCtx != NULL) {
602    avformat_close_input(&s->avFormatCtx);
603#ifndef HAVE_AUBIO_LIBAVCODEC_DEPRECATED // avoid crash on old libavcodec54
604    avformat_free_context(s->avFormatCtx);
605#endif
606    s->avFormatCtx = NULL;
607  }
608  av_packet_unref(&s->avPacket);
609  return AUBIO_OK;
610}
611
612void del_aubio_source_avcodec(aubio_source_avcodec_t * s){
613  if (!s) return;
614  aubio_source_avcodec_close(s);
615  if (s->output != NULL) {
616    av_free(s->output);
617  }
618  s->output = NULL;
619  if (s->avFrame != NULL) {
620    av_frame_free( &(s->avFrame) );
621  }
622  s->avFrame = NULL;
623  if (s->path) {
624    AUBIO_FREE(s->path);
625  }
626  s->path = NULL;
627  AUBIO_FREE(s);
628}
629
630#endif /* HAVE_LIBAV */
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