source: src/io/source_avcodec.c @ a81b12a

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretch
Last change on this file since a81b12a was a81b12a, checked in by Paul Brossier <piem@piem.org>, 2 years ago

src/io/source_avcodec.c: give up if resampling context failed opening (see #137, closes #187)

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