source: src/io/source_avcodec.c @ d62fb90

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Last change on this file since d62fb90 was d62fb90, checked in by Paul Brossier <piem@piem.org>, 15 months ago

src/io/source_avcodec.c: avoid deprecated call for ffmpeg >= 4.0

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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#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(58,0,0)
147  // register all formats and codecs
148  av_register_all();
149#endif
150
151  if (aubio_source_avcodec_has_network_url(s)) {
152    avformat_network_init();
153  }
154
155  // try opening the file and get some info about it
156  avFormatCtx = NULL;
157  if ( (err = avformat_open_input(&avFormatCtx, s->path, NULL, NULL) ) < 0 ) {
158    char errorstr[256];
159    av_strerror (err, errorstr, sizeof(errorstr));
160    AUBIO_ERR("source_avcodec: Failed opening %s (%s)\n", s->path, errorstr);
161    goto beach;
162  }
163
164  // try to make sure max_analyze_duration is big enough for most songs
165#if FFMPEG_LIBAVFORMAT_MAX_DUR2
166  avFormatCtx->max_analyze_duration2 *= 100;
167#else
168  avFormatCtx->max_analyze_duration *= 100;
169#endif
170
171  // retrieve stream information
172  if ( (err = avformat_find_stream_info(avFormatCtx, NULL)) < 0 ) {
173    char errorstr[256];
174    av_strerror (err, errorstr, sizeof(errorstr));
175    AUBIO_ERR("source_avcodec: Could not find stream information " "for %s (%s)\n", s->path,
176        errorstr);
177    goto beach;
178  }
179
180  // dump information about file onto standard error
181  //av_dump_format(avFormatCtx, 0, s->path, 0);
182
183  // look for the first audio stream
184  for (i = 0; i < avFormatCtx->nb_streams; i++) {
185#if FF_API_LAVF_AVCTX
186    if (avFormatCtx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
187#else
188    if (avFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
189#endif
190      if (selected_stream == -1) {
191        selected_stream = i;
192      } else {
193        AUBIO_WRN("source_avcodec: More than one audio stream in %s, "
194            "taking the first one\n", s->path);
195      }
196    }
197  }
198  if (selected_stream == -1) {
199    AUBIO_ERR("source_avcodec: No audio stream in %s\n", s->path);
200    goto beach;
201  }
202  //AUBIO_DBG("Taking stream %d in file %s\n", selected_stream, s->path);
203  s->selected_stream = selected_stream;
204
205#if FF_API_LAVF_AVCTX
206  codecpar = avFormatCtx->streams[selected_stream]->codecpar;
207  if (codecpar == NULL) {
208    AUBIO_ERR("source_avcodec: Could not find decoder for %s", s->path);
209    goto beach;
210  }
211  codec = avcodec_find_decoder(codecpar->codec_id);
212
213  /* Allocate a codec context for the decoder */
214  avCodecCtx = avcodec_alloc_context3(codec);
215  if (!avCodecCtx) {
216    AUBIO_ERR("source_avcodec: Failed to allocate the %s codec context for path %s\n",
217        av_get_media_type_string(AVMEDIA_TYPE_AUDIO), s->path);
218    goto beach;
219  }
220#else
221  avCodecCtx = avFormatCtx->streams[selected_stream]->codec;
222  codec = avcodec_find_decoder(avCodecCtx->codec_id);
223#endif
224  if (codec == NULL) {
225    AUBIO_ERR("source_avcodec: Could not find decoder for %s", s->path);
226    goto beach;
227  }
228
229#if FF_API_LAVF_AVCTX
230  /* Copy codec parameters from input stream to output codec context */
231  if ((err = avcodec_parameters_to_context(avCodecCtx, codecpar)) < 0) {
232    AUBIO_ERR("source_avcodec: Failed to copy %s codec parameters to decoder context for %s\n",
233       av_get_media_type_string(AVMEDIA_TYPE_AUDIO), s->path);
234    goto beach;
235  }
236#endif
237
238  if ( ( err = avcodec_open2(avCodecCtx, codec, NULL) ) < 0) {
239    char errorstr[256];
240    av_strerror (err, errorstr, sizeof(errorstr));
241    AUBIO_ERR("source_avcodec: Could not load codec for %s (%s)\n", s->path, errorstr);
242    goto beach;
243  }
244
245  /* get input specs */
246  s->input_samplerate = avCodecCtx->sample_rate;
247  s->input_channels   = avCodecCtx->channels;
248  //AUBIO_DBG("input_samplerate: %d\n", s->input_samplerate);
249  //AUBIO_DBG("input_channels: %d\n", s->input_channels);
250
251  if (samplerate == 0) {
252    s->samplerate = s->input_samplerate;
253  } else {
254    s->samplerate = samplerate;
255  }
256
257  if (s->samplerate >  s->input_samplerate) {
258    AUBIO_WRN("source_avcodec: upsampling %s from %d to %d\n", s->path,
259        s->input_samplerate, s->samplerate);
260  }
261
262  avFrame = av_frame_alloc();
263  if (!avFrame) {
264    AUBIO_ERR("source_avcodec: Could not allocate frame for (%s)\n", s->path);
265  }
266
267  /* allocate output for avr */
268  s->output = (smpl_t *)av_malloc(AUBIO_AVCODEC_MAX_BUFFER_SIZE * sizeof(smpl_t));
269
270  s->read_samples = 0;
271  s->read_index = 0;
272
273  s->avFormatCtx = avFormatCtx;
274  s->avCodecCtx = avCodecCtx;
275  s->avFrame = avFrame;
276
277  // default to mono output
278  aubio_source_avcodec_reset_resampler(s, 0);
279
280  if (s->avr == NULL) goto beach;
281
282  s->eof = 0;
283  s->multi = 0;
284
285  //av_log_set_level(AV_LOG_QUIET);
286
287  return s;
288
289beach:
290  //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
291  //    s->path, s->samplerate, s->hop_size);
292  del_aubio_source_avcodec(s);
293  return NULL;
294}
295
296void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s, uint_t multi) {
297  // create or reset resampler to/from mono/multi-channel
298  if ( (multi != s->multi) || (s->avr == NULL) ) {
299    int err;
300    int64_t input_layout = av_get_default_channel_layout(s->input_channels);
301    uint_t output_channels = multi ? s->input_channels : 1;
302    int64_t output_layout = av_get_default_channel_layout(output_channels);
303#ifdef HAVE_AVRESAMPLE
304    AVAudioResampleContext *avr = avresample_alloc_context();
305    AVAudioResampleContext *oldavr = s->avr;
306#elif defined(HAVE_SWRESAMPLE)
307    SwrContext *avr = swr_alloc();
308    SwrContext *oldavr = s->avr;
309#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
310
311    av_opt_set_int(avr, "in_channel_layout",  input_layout,           0);
312    av_opt_set_int(avr, "out_channel_layout", output_layout,          0);
313    av_opt_set_int(avr, "in_sample_rate",     s->input_samplerate,    0);
314    av_opt_set_int(avr, "out_sample_rate",    s->samplerate,          0);
315    av_opt_set_int(avr, "in_sample_fmt",      s->avCodecCtx->sample_fmt, 0);
316#if HAVE_AUBIO_DOUBLE
317    av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_DBL,      0);
318#else
319    av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLT,      0);
320#endif
321    // TODO: use planar?
322    //av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLTP,      0);
323#ifdef HAVE_AVRESAMPLE
324    if ( ( err = avresample_open(avr) ) < 0)
325#elif defined(HAVE_SWRESAMPLE)
326    if ( ( err = swr_init(avr) ) < 0)
327#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
328    {
329      char errorstr[256];
330      av_strerror (err, errorstr, sizeof(errorstr));
331      AUBIO_ERR("source_avcodec: Could not open resampling context for %s (%s)\n",
332          s->path, errorstr);
333      return;
334    }
335    s->avr = avr;
336    if (oldavr != NULL) {
337#ifdef HAVE_AVRESAMPLE
338      avresample_close( oldavr );
339#elif defined(HAVE_SWRESAMPLE)
340      swr_close ( oldavr );
341#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
342      av_free ( oldavr );
343      oldavr = NULL;
344    }
345    s->multi = multi;
346  }
347}
348
349void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s, uint_t * read_samples) {
350  AVFormatContext *avFormatCtx = s->avFormatCtx;
351  AVCodecContext *avCodecCtx = s->avCodecCtx;
352  AVFrame *avFrame = s->avFrame;
353  AVPacket avPacket = s->avPacket;
354#ifdef HAVE_AVRESAMPLE
355  AVAudioResampleContext *avr = s->avr;
356#elif defined(HAVE_SWRESAMPLE)
357  SwrContext *avr = s->avr;
358#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
359  int got_frame = 0;
360#ifdef HAVE_AVRESAMPLE
361  int in_linesize = 0;
362  int in_samples = avFrame->nb_samples;
363  int out_linesize = 0;
364  int max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE;
365  int out_samples = 0;
366#elif defined(HAVE_SWRESAMPLE)
367  int in_samples = avFrame->nb_samples;
368  int max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE / avCodecCtx->channels;
369  int out_samples = 0;
370#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
371  smpl_t *output = s->output;
372#ifndef FF_API_LAVF_AVCTX
373  int len = 0;
374#else
375  int ret = 0;
376#endif
377  av_init_packet (&avPacket);
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      s->eof = 1;
392      goto beach;
393    }
394  } while (avPacket.stream_index != s->selected_stream);
395
396#if FF_API_LAVF_AVCTX
397  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      goto beach;
410    } else if (ret == AVERROR_EOF) {
411      AUBIO_WRN("source_avcodec: the decoder has been fully flushed, and there will be no more output frames\n");
412    } else {
413      AUBIO_ERR("source_avcodec: decoding errors on %s\n", s->path);
414      goto beach;
415    }
416  }
417#else
418  len = avcodec_decode_audio4(avCodecCtx, avFrame, &got_frame, &avPacket);
419
420  if (len < 0) {
421    AUBIO_ERR("source_avcodec: error while decoding %s\n", s->path);
422    goto beach;
423  }
424#endif
425  if (got_frame == 0) {
426    AUBIO_WRN("source_avcodec: did not get a frame when reading %s\n", s->path);
427    goto beach;
428  }
429
430#if LIBAVUTIL_VERSION_MAJOR > 52
431  if (avFrame->channels != (sint_t)s->input_channels) {
432    AUBIO_WRN ("source_avcodec: trying to read from %d channel(s),"
433        "but configured for %d; is '%s' corrupt?\n", avFrame->channels,
434        s->input_channels, s->path);
435    goto beach;
436  }
437#endif
438
439#ifdef HAVE_AVRESAMPLE
440  in_linesize = 0;
441  av_samples_get_buffer_size(&in_linesize, avCodecCtx->channels,
442      avFrame->nb_samples, avCodecCtx->sample_fmt, 1);
443  in_samples = avFrame->nb_samples;
444  out_linesize = 0;
445  max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE;
446  out_samples = avresample_convert ( avr,
447        (uint8_t **)&output, out_linesize, max_out_samples,
448        (uint8_t **)avFrame->data, in_linesize, in_samples);
449#elif defined(HAVE_SWRESAMPLE)
450  in_samples = avFrame->nb_samples;
451  max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE / avCodecCtx->channels;
452  out_samples = swr_convert( avr,
453      (uint8_t **)&output, max_out_samples,
454      (const uint8_t **)avFrame->data, in_samples);
455#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
456  if (out_samples <= 0) {
457    AUBIO_WRN("source_avcodec: no sample found while converting frame (%s)\n", s->path);
458    goto beach;
459  }
460
461  *read_samples = out_samples;
462
463beach:
464  s->avFormatCtx = avFormatCtx;
465  s->avCodecCtx = avCodecCtx;
466  s->avFrame = avFrame;
467#if defined(HAVE_AVRESAMPLE) || defined(HAVE_SWRESAMPLE)
468  s->avr = avr;
469#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
470  s->output = output;
471
472  av_packet_unref(&avPacket);
473}
474
475void aubio_source_avcodec_do(aubio_source_avcodec_t * s, fvec_t * read_data, uint_t * read){
476  uint_t i;
477  uint_t end = 0;
478  uint_t total_wrote = 0;
479  // switch from multi
480  if (s->multi == 1) aubio_source_avcodec_reset_resampler(s, 0);
481  while (total_wrote < s->hop_size) {
482    end = MIN(s->read_samples - s->read_index, s->hop_size - total_wrote);
483    for (i = 0; i < end; i++) {
484      read_data->data[i + total_wrote] = s->output[i + s->read_index];
485    }
486    total_wrote += end;
487    if (total_wrote < s->hop_size) {
488      uint_t avcodec_read = 0;
489      aubio_source_avcodec_readframe(s, &avcodec_read);
490      s->read_samples = avcodec_read;
491      s->read_index = 0;
492      if (s->eof) {
493        break;
494      }
495    } else {
496      s->read_index += end;
497    }
498  }
499  if (total_wrote < s->hop_size) {
500    for (i = total_wrote; i < s->hop_size; i++) {
501      read_data->data[i] = 0.;
502    }
503  }
504  *read = total_wrote;
505}
506
507void aubio_source_avcodec_do_multi(aubio_source_avcodec_t * s, fmat_t * read_data, uint_t * read){
508  uint_t i,j;
509  uint_t end = 0;
510  uint_t total_wrote = 0;
511  // switch from mono
512  if (s->multi == 0) aubio_source_avcodec_reset_resampler(s, 1);
513  while (total_wrote < s->hop_size) {
514    end = MIN(s->read_samples - s->read_index, s->hop_size - total_wrote);
515    for (j = 0; j < read_data->height; j++) {
516      for (i = 0; i < end; i++) {
517        read_data->data[j][i + total_wrote] =
518          s->output[(i + s->read_index) * s->input_channels + j];
519      }
520    }
521    total_wrote += end;
522    if (total_wrote < s->hop_size) {
523      uint_t avcodec_read = 0;
524      aubio_source_avcodec_readframe(s, &avcodec_read);
525      s->read_samples = avcodec_read;
526      s->read_index = 0;
527      if (s->eof) {
528        break;
529      }
530    } else {
531      s->read_index += end;
532    }
533  }
534  if (total_wrote < s->hop_size) {
535    for (j = 0; j < read_data->height; j++) {
536      for (i = total_wrote; i < s->hop_size; i++) {
537        read_data->data[j][i] = 0.;
538      }
539    }
540  }
541  *read = total_wrote;
542}
543
544uint_t aubio_source_avcodec_get_samplerate(const aubio_source_avcodec_t * s) {
545  return s->samplerate;
546}
547
548uint_t aubio_source_avcodec_get_channels(const aubio_source_avcodec_t * s) {
549  return s->input_channels;
550}
551
552uint_t aubio_source_avcodec_seek (aubio_source_avcodec_t * s, uint_t pos) {
553  int64_t resampled_pos = (uint_t)ROUND(pos * (s->input_samplerate * 1. / s->samplerate));
554  int64_t min_ts = MAX(resampled_pos - 2000, 0);
555  int64_t max_ts = MIN(resampled_pos + 2000, INT64_MAX);
556  int seek_flags = AVSEEK_FLAG_FRAME | AVSEEK_FLAG_ANY;
557  int ret = AUBIO_FAIL;
558  if (s->avFormatCtx != NULL && s->avr != NULL) {
559    ret = AUBIO_OK;
560  } else {
561    AUBIO_ERR("source_avcodec: failed seeking in %s (file not opened?)", s->path);
562    return ret;
563  }
564  if ((sint_t)pos < 0) {
565    AUBIO_ERR("source_avcodec: could not seek %s at %d (seeking position"
566       " should be >= 0)\n", s->path, pos);
567    return AUBIO_FAIL;
568  }
569  ret = avformat_seek_file(s->avFormatCtx, s->selected_stream,
570      min_ts, resampled_pos, max_ts, seek_flags);
571  if (ret < 0) {
572    AUBIO_ERR("source_avcodec: failed seeking to %d in file %s", pos, s->path);
573  }
574  // reset read status
575  s->eof = 0;
576  s->read_index = 0;
577  s->read_samples = 0;
578#ifdef HAVE_AVRESAMPLE
579  // reset the AVAudioResampleContext
580  avresample_close(s->avr);
581  avresample_open(s->avr);
582#elif defined(HAVE_SWRESAMPLE)
583  swr_close(s->avr);
584  swr_init(s->avr);
585#endif
586  return ret;
587}
588
589uint_t aubio_source_avcodec_get_duration (aubio_source_avcodec_t * s) {
590  if (s && &(s->avFormatCtx) != NULL) {
591    int64_t duration = s->avFormatCtx->duration;
592    return s->samplerate * ((uint_t)duration / 1e6 );
593  }
594  return 0;
595}
596
597uint_t aubio_source_avcodec_close(aubio_source_avcodec_t * s) {
598  if (s->avr != NULL) {
599#ifdef HAVE_AVRESAMPLE
600    avresample_close( s->avr );
601#elif defined(HAVE_SWRESAMPLE)
602    swr_close ( s->avr );
603#endif
604    av_free ( s->avr );
605  }
606  s->avr = NULL;
607  if (s->avCodecCtx != NULL) {
608#ifndef HAVE_AUBIO_LIBAVCODEC_DEPRECATED
609    avcodec_free_context( &s->avCodecCtx );
610#else
611    avcodec_close ( s->avCodecCtx );
612#endif
613  }
614  s->avCodecCtx = NULL;
615  if (s->avFormatCtx != NULL) {
616    avformat_close_input(&s->avFormatCtx);
617    s->avFormatCtx = NULL;
618  }
619  av_packet_unref(&s->avPacket);
620  return AUBIO_OK;
621}
622
623void del_aubio_source_avcodec(aubio_source_avcodec_t * s){
624  if (!s) return;
625  aubio_source_avcodec_close(s);
626  if (s->output != NULL) {
627    av_free(s->output);
628  }
629  s->output = NULL;
630  if (s->avFrame != NULL) {
631    av_frame_free( &(s->avFrame) );
632  }
633  s->avFrame = NULL;
634  if (s->path) {
635    AUBIO_FREE(s->path);
636  }
637  s->path = NULL;
638  AUBIO_FREE(s);
639}
640
641#endif /* HAVE_LIBAV */
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