source: src/io/source_avcodec.c @ 8250214

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5sampler
Last change on this file since 8250214 was 8250214, checked in by Paul Brossier <piem@piem.org>, 7 years ago

src/io/source_avcodec.c: avoid double free with libavformat56

Note: when using ffmpeg 3.2.x, valgrind will complain that `40 bytes in
1 blocks are still reachable`. This is supposedly harmless; for more
information see https://trac.ffmpeg.org/ticket/3194.

  • Property mode set to 100644
File size: 18.3 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(57,0,0)
46#define HAVE_AUBIO_LIBAVCODEC_DEPRECATED 1
47#endif
48
49#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55,28,1)
50#warning "libavcodec < 56 is deprecated"
51#define av_frame_alloc  avcodec_alloc_frame
52#define av_frame_free avcodec_free_frame
53#define av_packet_unref av_free_packet
54#endif
55
56#include "aubio_priv.h"
57#include "fvec.h"
58#include "fmat.h"
59#include "source_avcodec.h"
60
61#define AUBIO_AVCODEC_MAX_BUFFER_SIZE FF_MIN_BUFFER_SIZE
62
63struct _aubio_source_avcodec_t {
64  uint_t hop_size;
65  uint_t samplerate;
66  uint_t channels;
67
68  // some data about the file
69  char_t *path;
70  uint_t input_samplerate;
71  uint_t input_channels;
72
73  // avcodec stuff
74  AVFormatContext *avFormatCtx;
75  AVCodecContext *avCodecCtx;
76  AVFrame *avFrame;
77  AVPacket avPacket;
78#ifdef HAVE_AVRESAMPLE
79  AVAudioResampleContext *avr;
80#elif defined(HAVE_SWRESAMPLE)
81  SwrContext *avr;
82#endif
83  smpl_t *output;
84  uint_t read_samples;
85  uint_t read_index;
86  sint_t selected_stream;
87  uint_t eof;
88  uint_t multi;
89};
90
91// hack to create or re-create the context the first time _do or _do_multi is called
92void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s, uint_t multi);
93void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s, uint_t * read_samples);
94
95uint_t aubio_source_avcodec_has_network_url(aubio_source_avcodec_t *s);
96
97uint_t aubio_source_avcodec_has_network_url(aubio_source_avcodec_t *s) {
98  char proto[20], authorization[256], hostname[128], uripath[256];
99  int proto_size = 20, authorization_size = 256, hostname_size = 128,
100      *port_ptr = 0, path_size = 256;
101  av_url_split(proto, proto_size, authorization, authorization_size, hostname,
102      hostname_size, port_ptr, uripath, path_size, s->path);
103  if (strlen(proto)) {
104    return 1;
105  }
106  return 0;
107}
108
109
110aubio_source_avcodec_t * new_aubio_source_avcodec(const char_t * path, uint_t samplerate, uint_t hop_size) {
111  aubio_source_avcodec_t * s = AUBIO_NEW(aubio_source_avcodec_t);
112  int err;
113  if (path == NULL) {
114    AUBIO_ERR("source_avcodec: Aborted opening null path\n");
115    goto beach;
116  }
117  if ((sint_t)samplerate < 0) {
118    AUBIO_ERR("source_avcodec: Can not open %s with samplerate %d\n", path, samplerate);
119    goto beach;
120  }
121  if ((sint_t)hop_size <= 0) {
122    AUBIO_ERR("source_avcodec: Can not open %s with hop_size %d\n", path, hop_size);
123    goto beach;
124  }
125
126  s->hop_size = hop_size;
127  s->channels = 1;
128
129  if (s->path) AUBIO_FREE(s->path);
130  s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);
131  strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);
132
133  // register all formats and codecs
134  av_register_all();
135
136  if (aubio_source_avcodec_has_network_url(s)) {
137    avformat_network_init();
138  }
139
140  // try opening the file and get some info about it
141  AVFormatContext *avFormatCtx = s->avFormatCtx;
142  avFormatCtx = NULL;
143  if ( (err = avformat_open_input(&avFormatCtx, s->path, NULL, NULL) ) < 0 ) {
144    char errorstr[256];
145    av_strerror (err, errorstr, sizeof(errorstr));
146    AUBIO_ERR("source_avcodec: Failed opening %s (%s)\n", s->path, errorstr);
147    goto beach;
148  }
149
150  // try to make sure max_analyze_duration is big enough for most songs
151#if FFMPEG_LIBAVFORMAT_MAX_DUR2
152  avFormatCtx->max_analyze_duration2 *= 100;
153#else
154  avFormatCtx->max_analyze_duration *= 100;
155#endif
156
157  // retrieve stream information
158  if ( (err = avformat_find_stream_info(avFormatCtx, NULL)) < 0 ) {
159    char errorstr[256];
160    av_strerror (err, errorstr, sizeof(errorstr));
161    AUBIO_ERR("source_avcodec: Could not find stream information " "for %s (%s)\n", s->path,
162        errorstr);
163    goto beach;
164  }
165
166  // dump information about file onto standard error
167  //av_dump_format(avFormatCtx, 0, s->path, 0);
168
169  // look for the first audio stream
170  uint_t i;
171  sint_t selected_stream = -1;
172  for (i = 0; i < avFormatCtx->nb_streams; i++) {
173#if FF_API_LAVF_AVCTX
174    if (avFormatCtx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
175#else
176    if (avFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
177#endif
178      if (selected_stream == -1) {
179        selected_stream = i;
180      } else {
181        AUBIO_WRN("source_avcodec: More than one audio stream in %s, "
182            "taking the first one\n", s->path);
183      }
184    }
185  }
186  if (selected_stream == -1) {
187    AUBIO_ERR("source_avcodec: No audio stream in %s\n", s->path);
188    goto beach;
189  }
190  //AUBIO_DBG("Taking stream %d in file %s\n", selected_stream, s->path);
191  s->selected_stream = selected_stream;
192
193  AVCodecContext *avCodecCtx = s->avCodecCtx;
194#if FF_API_LAVF_AVCTX
195  AVCodecParameters *codecpar = avFormatCtx->streams[selected_stream]->codecpar;
196  if (codecpar == NULL) {
197    AUBIO_ERR("source_avcodec: Could not find decoder for %s", s->path);
198    goto beach;
199  }
200  AVCodec *codec = avcodec_find_decoder(codecpar->codec_id);
201
202  /* Allocate a codec context for the decoder */
203  avCodecCtx = avcodec_alloc_context3(codec);
204  if (!avCodecCtx) {
205    AUBIO_ERR("source_avcodec: Failed to allocate the %s codec context for path %s\n",
206        av_get_media_type_string(AVMEDIA_TYPE_AUDIO), s->path);
207    goto beach;
208  }
209#else
210  avCodecCtx = avFormatCtx->streams[selected_stream]->codec;
211  AVCodec *codec = avcodec_find_decoder(avCodecCtx->codec_id);
212#endif
213  if (codec == NULL) {
214    AUBIO_ERR("source_avcodec: Could not find decoder for %s", s->path);
215    goto beach;
216  }
217
218#if FF_API_LAVF_AVCTX
219  /* Copy codec parameters from input stream to output codec context */
220  if ((err = avcodec_parameters_to_context(avCodecCtx, codecpar)) < 0) {
221    AUBIO_ERR("source_avcodec: Failed to copy %s codec parameters to decoder context for %s\n",
222       av_get_media_type_string(AVMEDIA_TYPE_AUDIO), s->path);
223    goto beach;
224  }
225#endif
226
227  if ( ( err = avcodec_open2(avCodecCtx, codec, NULL) ) < 0) {
228    char errorstr[256];
229    av_strerror (err, errorstr, sizeof(errorstr));
230    AUBIO_ERR("source_avcodec: Could not load codec for %s (%s)\n", s->path, errorstr);
231    goto beach;
232  }
233
234  /* get input specs */
235  s->input_samplerate = avCodecCtx->sample_rate;
236  s->input_channels   = avCodecCtx->channels;
237  //AUBIO_DBG("input_samplerate: %d\n", s->input_samplerate);
238  //AUBIO_DBG("input_channels: %d\n", s->input_channels);
239
240  if (samplerate == 0) {
241    s->samplerate = s->input_samplerate;
242  } else {
243    s->samplerate = samplerate;
244  }
245
246  if (s->samplerate >  s->input_samplerate) {
247    AUBIO_WRN("source_avcodec: upsampling %s from %d to %d\n", s->path,
248        s->input_samplerate, s->samplerate);
249  }
250
251  AVFrame *avFrame = s->avFrame;
252  avFrame = av_frame_alloc();
253  if (!avFrame) {
254    AUBIO_ERR("source_avcodec: Could not allocate frame for (%s)\n", s->path);
255  }
256
257  /* allocate output for avr */
258  s->output = (smpl_t *)av_malloc(AUBIO_AVCODEC_MAX_BUFFER_SIZE * sizeof(smpl_t));
259
260  s->read_samples = 0;
261  s->read_index = 0;
262
263  s->avFormatCtx = avFormatCtx;
264  s->avCodecCtx = avCodecCtx;
265  s->avFrame = avFrame;
266
267  // default to mono output
268  aubio_source_avcodec_reset_resampler(s, 0);
269
270  s->eof = 0;
271  s->multi = 0;
272
273  //av_log_set_level(AV_LOG_QUIET);
274
275  return s;
276
277beach:
278  //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
279  //    s->path, s->samplerate, s->hop_size);
280  del_aubio_source_avcodec(s);
281  return NULL;
282}
283
284void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s, uint_t multi) {
285  // create or reset resampler to/from mono/multi-channel
286  if ( (multi != s->multi) || (s->avr == NULL) ) {
287    int64_t input_layout = av_get_default_channel_layout(s->input_channels);
288    uint_t output_channels = multi ? s->input_channels : 1;
289    int64_t output_layout = av_get_default_channel_layout(output_channels);
290#ifdef HAVE_AVRESAMPLE
291    AVAudioResampleContext *avr = avresample_alloc_context();
292    AVAudioResampleContext *oldavr = s->avr;
293#elif defined(HAVE_SWRESAMPLE)
294    SwrContext *avr = swr_alloc();
295    SwrContext *oldavr = s->avr;
296#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
297
298    av_opt_set_int(avr, "in_channel_layout",  input_layout,           0);
299    av_opt_set_int(avr, "out_channel_layout", output_layout,          0);
300    av_opt_set_int(avr, "in_sample_rate",     s->input_samplerate,    0);
301    av_opt_set_int(avr, "out_sample_rate",    s->samplerate,          0);
302    av_opt_set_int(avr, "in_sample_fmt",      s->avCodecCtx->sample_fmt, 0);
303#if HAVE_AUBIO_DOUBLE
304    av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_DBL,      0);
305#else
306    av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLT,      0);
307#endif
308    // TODO: use planar?
309    //av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLTP,      0);
310    int err;
311#ifdef HAVE_AVRESAMPLE
312    if ( ( err = avresample_open(avr) ) < 0) {
313#elif defined(HAVE_SWRESAMPLE)
314    if ( ( err = swr_init(avr) ) < 0) {
315#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
316      char errorstr[256];
317      av_strerror (err, errorstr, sizeof(errorstr));
318      AUBIO_ERR("source_avcodec: Could not open AVAudioResampleContext for %s (%s)\n",
319          s->path, errorstr);
320      //goto beach;
321      return;
322    }
323    s->avr = avr;
324    if (oldavr != NULL) {
325#ifdef HAVE_AVRESAMPLE
326      avresample_close( oldavr );
327#elif defined(HAVE_SWRESAMPLE)
328      swr_close ( oldavr );
329#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
330      av_free ( oldavr );
331      oldavr = NULL;
332    }
333    s->multi = multi;
334  }
335}
336
337void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s, uint_t * read_samples) {
338  AVFormatContext *avFormatCtx = s->avFormatCtx;
339  AVCodecContext *avCodecCtx = s->avCodecCtx;
340  AVFrame *avFrame = s->avFrame;
341  AVPacket avPacket = s->avPacket;
342  av_init_packet (&avPacket);
343#ifdef HAVE_AVRESAMPLE
344  AVAudioResampleContext *avr = s->avr;
345#elif defined(HAVE_SWRESAMPLE)
346  SwrContext *avr = s->avr;
347#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
348  smpl_t *output = s->output;
349  *read_samples = 0;
350
351  do
352  {
353    int err = av_read_frame (avFormatCtx, &avPacket);
354    if (err == AVERROR_EOF) {
355      s->eof = 1;
356      goto beach;
357    }
358    if (err != 0) {
359      char errorstr[256];
360      av_strerror (err, errorstr, sizeof(errorstr));
361      AUBIO_ERR("source_avcodec: could not read frame in %s (%s)\n", s->path, errorstr);
362      s->eof = 1;
363      goto beach;
364    }
365  } while (avPacket.stream_index != s->selected_stream);
366
367  int got_frame = 0;
368#if FF_API_LAVF_AVCTX
369  int ret = avcodec_send_packet(avCodecCtx, &avPacket);
370  if (ret < 0 && ret != AVERROR_EOF) {
371    AUBIO_ERR("source_avcodec: error when sending packet for %s\n", s->path);
372    goto beach;
373  }
374  ret = avcodec_receive_frame(avCodecCtx, avFrame);
375  if (ret >= 0) {
376    got_frame = 1;
377  }
378  if (ret < 0) {
379    if (ret == AVERROR(EAGAIN)) {
380      //AUBIO_WRN("source_avcodec: output is not available right now - user must try to send new input\n");
381      goto beach;
382    } else if (ret == AVERROR_EOF) {
383      AUBIO_WRN("source_avcodec: the decoder has been fully flushed, and there will be no more output frames\n");
384    } else {
385      AUBIO_ERR("source_avcodec: decoding errors on %s\n", s->path);
386      goto beach;
387    }
388  }
389#else
390  int len = avcodec_decode_audio4(avCodecCtx, avFrame, &got_frame, &avPacket);
391
392  if (len < 0) {
393    AUBIO_ERR("source_avcodec: error while decoding %s\n", s->path);
394    goto beach;
395  }
396#endif
397  if (got_frame == 0) {
398    AUBIO_WRN("source_avcodec: did not get a frame when reading %s\n", s->path);
399    goto beach;
400  }
401
402#ifdef HAVE_AVRESAMPLE
403  int in_linesize = 0;
404  av_samples_get_buffer_size(&in_linesize, avCodecCtx->channels,
405      avFrame->nb_samples, avCodecCtx->sample_fmt, 1);
406  int in_samples = avFrame->nb_samples;
407  int out_linesize = 0;
408  int max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE;
409  int out_samples = avresample_convert ( avr,
410        (uint8_t **)&output, out_linesize, max_out_samples,
411        (uint8_t **)avFrame->data, in_linesize, in_samples);
412#elif defined(HAVE_SWRESAMPLE)
413  int in_samples = avFrame->nb_samples;
414  int max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE / avCodecCtx->channels;
415  int out_samples = swr_convert( avr,
416      (uint8_t **)&output, max_out_samples,
417      (const uint8_t **)avFrame->data, in_samples);
418#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
419  if (out_samples <= 0) {
420    AUBIO_WRN("source_avcodec: no sample found while converting frame (%s)\n", s->path);
421    goto beach;
422  }
423
424  *read_samples = out_samples;
425
426beach:
427  s->avFormatCtx = avFormatCtx;
428  s->avCodecCtx = avCodecCtx;
429  s->avFrame = avFrame;
430#if defined(HAVE_AVRESAMPLE) || defined(HAVE_SWRESAMPLE)
431  s->avr = avr;
432#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
433  s->output = output;
434
435  av_packet_unref(&avPacket);
436}
437
438void aubio_source_avcodec_do(aubio_source_avcodec_t * s, fvec_t * read_data, uint_t * read){
439  uint_t i;
440  uint_t end = 0;
441  uint_t total_wrote = 0;
442  // switch from multi
443  if (s->multi == 1) aubio_source_avcodec_reset_resampler(s, 0);
444  while (total_wrote < s->hop_size) {
445    end = MIN(s->read_samples - s->read_index, s->hop_size - total_wrote);
446    for (i = 0; i < end; i++) {
447      read_data->data[i + total_wrote] = s->output[i + s->read_index];
448    }
449    total_wrote += end;
450    if (total_wrote < s->hop_size) {
451      uint_t avcodec_read = 0;
452      aubio_source_avcodec_readframe(s, &avcodec_read);
453      s->read_samples = avcodec_read;
454      s->read_index = 0;
455      if (s->eof) {
456        break;
457      }
458    } else {
459      s->read_index += end;
460    }
461  }
462  if (total_wrote < s->hop_size) {
463    for (i = total_wrote; i < s->hop_size; i++) {
464      read_data->data[i] = 0.;
465    }
466  }
467  *read = total_wrote;
468}
469
470void aubio_source_avcodec_do_multi(aubio_source_avcodec_t * s, fmat_t * read_data, uint_t * read){
471  uint_t i,j;
472  uint_t end = 0;
473  uint_t total_wrote = 0;
474  // switch from mono
475  if (s->multi == 0) aubio_source_avcodec_reset_resampler(s, 1);
476  while (total_wrote < s->hop_size) {
477    end = MIN(s->read_samples - s->read_index, s->hop_size - total_wrote);
478    for (j = 0; j < read_data->height; j++) {
479      for (i = 0; i < end; i++) {
480        read_data->data[j][i + total_wrote] =
481          s->output[(i + s->read_index) * s->input_channels + j];
482      }
483    }
484    total_wrote += end;
485    if (total_wrote < s->hop_size) {
486      uint_t avcodec_read = 0;
487      aubio_source_avcodec_readframe(s, &avcodec_read);
488      s->read_samples = avcodec_read;
489      s->read_index = 0;
490      if (s->eof) {
491        break;
492      }
493    } else {
494      s->read_index += end;
495    }
496  }
497  if (total_wrote < s->hop_size) {
498    for (j = 0; j < read_data->height; j++) {
499      for (i = total_wrote; i < s->hop_size; i++) {
500        read_data->data[j][i] = 0.;
501      }
502    }
503  }
504  *read = total_wrote;
505}
506
507uint_t aubio_source_avcodec_get_samplerate(const aubio_source_avcodec_t * s) {
508  return s->samplerate;
509}
510
511uint_t aubio_source_avcodec_get_channels(const aubio_source_avcodec_t * s) {
512  return s->input_channels;
513}
514
515uint_t aubio_source_avcodec_seek (aubio_source_avcodec_t * s, uint_t pos) {
516  int64_t resampled_pos = (uint_t)ROUND(pos * (s->input_samplerate * 1. / s->samplerate));
517  int64_t min_ts = MAX(resampled_pos - 2000, 0);
518  int64_t max_ts = MIN(resampled_pos + 2000, INT64_MAX);
519  int seek_flags = AVSEEK_FLAG_FRAME | AVSEEK_FLAG_ANY;
520  int ret = AUBIO_FAIL;
521  if (s->avFormatCtx != NULL && s->avr != NULL) {
522    ret = AUBIO_OK;
523  } else {
524    AUBIO_ERR("source_avcodec: failed seeking in %s (file not opened?)", s->path);
525    return ret;
526  }
527  if ((sint_t)pos < 0) {
528    AUBIO_ERR("source_avcodec: could not seek %s at %d (seeking position"
529       " should be >= 0)\n", s->path, pos);
530    return AUBIO_FAIL;
531  }
532  ret = avformat_seek_file(s->avFormatCtx, s->selected_stream,
533      min_ts, resampled_pos, max_ts, seek_flags);
534  if (ret < 0) {
535    AUBIO_ERR("source_avcodec: failed seeking to %d in file %s", pos, s->path);
536  }
537  // reset read status
538  s->eof = 0;
539  s->read_index = 0;
540  s->read_samples = 0;
541#ifdef HAVE_AVRESAMPLE
542  // reset the AVAudioResampleContext
543  avresample_close(s->avr);
544  avresample_open(s->avr);
545#elif defined(HAVE_SWRESAMPLE)
546  swr_close(s->avr);
547  swr_init(s->avr);
548#endif
549  return ret;
550}
551
552uint_t aubio_source_avcodec_get_duration (aubio_source_avcodec_t * s) {
553  if (s && &(s->avFormatCtx) != NULL) {
554    int64_t duration = s->avFormatCtx->duration;
555    return s->samplerate * ((uint_t)duration / 1e6 );
556  }
557  return 0;
558}
559
560uint_t aubio_source_avcodec_close(aubio_source_avcodec_t * s) {
561  if (s->avr != NULL) {
562#ifdef HAVE_AVRESAMPLE
563    avresample_close( s->avr );
564#elif defined(HAVE_SWRESAMPLE)
565    swr_close ( s->avr );
566#endif
567    av_free ( s->avr );
568  }
569  s->avr = NULL;
570  if (s->avCodecCtx != NULL) {
571#ifndef HAVE_AUBIO_LIBAVCODEC_DEPRECATED
572    avcodec_free_context( &s->avCodecCtx );
573#else
574    avcodec_close ( s->avCodecCtx );
575#endif
576  }
577  s->avCodecCtx = NULL;
578  if (s->avFormatCtx != NULL) {
579    avformat_close_input(&s->avFormatCtx);
580    s->avFormatCtx = NULL;
581  }
582  av_packet_unref(&s->avPacket);
583  return AUBIO_OK;
584}
585
586void del_aubio_source_avcodec(aubio_source_avcodec_t * s){
587  if (!s) return;
588  aubio_source_avcodec_close(s);
589  if (s->output != NULL) {
590    av_free(s->output);
591  }
592  s->output = NULL;
593  if (s->avFrame != NULL) {
594    av_frame_free( &(s->avFrame) );
595  }
596  s->avFrame = NULL;
597  if (s->path) {
598    AUBIO_FREE(s->path);
599  }
600  s->path = NULL;
601  AUBIO_FREE(s);
602}
603
604#endif /* HAVE_LIBAV */
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