source: src/io/source_avcodec.c @ 39c8d08

feature/autosinkfeature/constantqfeature/pitchshiftfeature/timestretch
Last change on this file since 39c8d08 was 39c8d08, checked in by Paul Brossier <piem@piem.org>, 15 months ago

[source] fix skipped samples warning in source_avcodec

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File size: 19.1 KB
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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 -> 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};
93
94// create or re-create the context when _do or _do_multi is called
95void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s);
96// actually read a frame
97void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s,
98    uint_t * read_samples);
99
100uint_t aubio_source_avcodec_has_network_url(aubio_source_avcodec_t *s);
101
102uint_t aubio_source_avcodec_has_network_url(aubio_source_avcodec_t *s) {
103  char proto[20], authorization[256], hostname[128], uripath[256];
104  int proto_size = 20, authorization_size = 256, hostname_size = 128,
105      *port_ptr = 0, path_size = 256;
106  av_url_split(proto, proto_size, authorization, authorization_size, hostname,
107      hostname_size, port_ptr, uripath, path_size, s->path);
108  if (strlen(proto)) {
109    return 1;
110  }
111  return 0;
112}
113
114
115aubio_source_avcodec_t * new_aubio_source_avcodec(const char_t * path,
116    uint_t samplerate, uint_t hop_size) {
117  aubio_source_avcodec_t * s = AUBIO_NEW(aubio_source_avcodec_t);
118  AVFormatContext *avFormatCtx = s->avFormatCtx;
119  AVCodecContext *avCodecCtx = s->avCodecCtx;
120  AVFrame *avFrame = s->avFrame;
121  sint_t selected_stream = -1;
122#if FF_API_LAVF_AVCTX
123  AVCodecParameters *codecpar;
124#endif
125  AVCodec *codec;
126  uint_t i;
127  int err;
128  if (path == NULL) {
129    AUBIO_ERR("source_avcodec: Aborted opening null path\n");
130    goto beach;
131  }
132  if ((sint_t)samplerate < 0) {
133    AUBIO_ERR("source_avcodec: Can not open %s with samplerate %d\n",
134        path, samplerate);
135    goto beach;
136  }
137  if ((sint_t)hop_size <= 0) {
138    AUBIO_ERR("source_avcodec: Can not open %s with hop_size %d\n",
139        path, hop_size);
140    goto beach;
141  }
142
143  s->hop_size = hop_size;
144  s->channels = 1;
145
146  if (s->path) AUBIO_FREE(s->path);
147  s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);
148  strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);
149
150#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(58,0,0)
151  // register all formats and codecs
152  av_register_all();
153#endif
154
155  if (aubio_source_avcodec_has_network_url(s)) {
156    avformat_network_init();
157  }
158
159  // try opening the file and get some info about it
160  avFormatCtx = NULL;
161  if ( (err = avformat_open_input(&avFormatCtx, s->path, NULL, NULL) ) < 0 ) {
162    char errorstr[256];
163    av_strerror (err, errorstr, sizeof(errorstr));
164    AUBIO_ERR("source_avcodec: Failed opening %s (%s)\n", s->path, errorstr);
165    goto beach;
166  }
167
168  // try to make sure max_analyze_duration is big enough for most songs
169#if FFMPEG_LIBAVFORMAT_MAX_DUR2
170  avFormatCtx->max_analyze_duration2 *= 100;
171#else
172  avFormatCtx->max_analyze_duration *= 100;
173#endif
174
175  // retrieve stream information
176  if ( (err = avformat_find_stream_info(avFormatCtx, NULL)) < 0 ) {
177    char errorstr[256];
178    av_strerror (err, errorstr, sizeof(errorstr));
179    AUBIO_ERR("source_avcodec: Could not find stream information "
180        "for %s (%s)\n", s->path, errorstr);
181    goto beach;
182  }
183
184  // dump information about file onto standard error
185  //av_dump_format(avFormatCtx, 0, s->path, 0);
186
187  // look for the first audio stream
188  for (i = 0; i < avFormatCtx->nb_streams; i++) {
189#if FF_API_LAVF_AVCTX
190    if (avFormatCtx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
191#else
192    if (avFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
193#endif
194      if (selected_stream == -1) {
195        selected_stream = i;
196      } else {
197        AUBIO_WRN("source_avcodec: More than one audio stream in %s, "
198            "taking the first one\n", s->path);
199      }
200    }
201  }
202  if (selected_stream == -1) {
203    AUBIO_ERR("source_avcodec: No audio stream in %s\n", s->path);
204    goto beach;
205  }
206  //AUBIO_DBG("Taking stream %d in file %s\n", selected_stream, s->path);
207  s->selected_stream = selected_stream;
208
209#if FF_API_LAVF_AVCTX
210  codecpar = avFormatCtx->streams[selected_stream]->codecpar;
211  if (codecpar == NULL) {
212    AUBIO_ERR("source_avcodec: Could not find decoder for %s", s->path);
213    goto beach;
214  }
215  codec = avcodec_find_decoder(codecpar->codec_id);
216
217  /* Allocate a codec context for the decoder */
218  avCodecCtx = avcodec_alloc_context3(codec);
219  if (!avCodecCtx) {
220    AUBIO_ERR("source_avcodec: Failed to allocate the %s codec context "
221        "for path %s\n", av_get_media_type_string(AVMEDIA_TYPE_AUDIO),
222        s->path);
223    goto beach;
224  }
225#else
226  avCodecCtx = avFormatCtx->streams[selected_stream]->codec;
227  codec = avcodec_find_decoder(avCodecCtx->codec_id);
228#endif
229  if (codec == NULL) {
230    AUBIO_ERR("source_avcodec: Could not find decoder for %s", s->path);
231    goto beach;
232  }
233
234#if FF_API_LAVF_AVCTX
235  /* Copy codec parameters from input stream to output codec context */
236  if ((err = avcodec_parameters_to_context(avCodecCtx, codecpar)) < 0) {
237    AUBIO_ERR("source_avcodec: Failed to copy %s codec parameters to "
238        "decoder context for %s\n",
239        av_get_media_type_string(AVMEDIA_TYPE_AUDIO), s->path);
240    goto beach;
241  }
242  av_codec_set_pkt_timebase(avCodecCtx,
243      avFormatCtx->streams[selected_stream]->time_base);
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,
250        errorstr);
251    goto beach;
252  }
253
254  /* get input specs */
255  s->input_samplerate = avCodecCtx->sample_rate;
256  s->input_channels   = avCodecCtx->channels;
257  //AUBIO_DBG("input_samplerate: %d\n", s->input_samplerate);
258  //AUBIO_DBG("input_channels: %d\n", s->input_channels);
259
260  if (samplerate == 0) {
261    s->samplerate = s->input_samplerate;
262  } else {
263    s->samplerate = samplerate;
264  }
265
266  if (s->samplerate >  s->input_samplerate) {
267    AUBIO_WRN("source_avcodec: upsampling %s from %d to %d\n", s->path,
268        s->input_samplerate, s->samplerate);
269  }
270
271  avFrame = av_frame_alloc();
272  if (!avFrame) {
273    AUBIO_ERR("source_avcodec: Could not allocate frame for (%s)\n", s->path);
274  }
275
276  /* allocate output for avr */
277  s->output = (smpl_t *)av_malloc(AUBIO_AVCODEC_MAX_BUFFER_SIZE
278      * sizeof(smpl_t));
279
280  s->read_samples = 0;
281  s->read_index = 0;
282
283  s->avFormatCtx = avFormatCtx;
284  s->avCodecCtx = avCodecCtx;
285  s->avFrame = avFrame;
286
287  aubio_source_avcodec_reset_resampler(s);
288
289  if (s->avr == NULL) goto beach;
290
291  s->eof = 0;
292
293  //av_log_set_level(AV_LOG_QUIET);
294
295  return s;
296
297beach:
298  //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
299  //    s->path, s->samplerate, s->hop_size);
300  del_aubio_source_avcodec(s);
301  return NULL;
302}
303
304void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s)
305{
306  // create or reset resampler to/from mono/multi-channel
307  if ( s->avr == NULL ) {
308    int err;
309    int64_t input_layout = av_get_default_channel_layout(s->input_channels);
310    int64_t output_layout = av_get_default_channel_layout(s->input_channels);
311#ifdef HAVE_AVRESAMPLE
312    AVAudioResampleContext *avr = avresample_alloc_context();
313#elif defined(HAVE_SWRESAMPLE)
314    SwrContext *avr = swr_alloc();
315#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
316
317    av_opt_set_int(avr, "in_channel_layout",  input_layout,              0);
318    av_opt_set_int(avr, "out_channel_layout", output_layout,             0);
319    av_opt_set_int(avr, "in_sample_rate",     s->input_samplerate,       0);
320    av_opt_set_int(avr, "out_sample_rate",    s->samplerate,             0);
321    av_opt_set_int(avr, "in_sample_fmt",      s->avCodecCtx->sample_fmt, 0);
322#if HAVE_AUBIO_DOUBLE
323    av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_DBL,         0);
324#else
325    av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLT,         0);
326#endif
327    // TODO: use planar?
328    //av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLTP,      0);
329#ifdef HAVE_AVRESAMPLE
330    if ( ( err = avresample_open(avr) ) < 0)
331#elif defined(HAVE_SWRESAMPLE)
332    if ( ( err = swr_init(avr) ) < 0)
333#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
334    {
335      char errorstr[256];
336      av_strerror (err, errorstr, sizeof(errorstr));
337      AUBIO_ERR("source_avcodec: Could not open resampling context"
338         " for %s (%s)\n", s->path, errorstr);
339      return;
340    }
341    s->avr = avr;
342  }
343}
344
345void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s,
346    uint_t * read_samples)
347{
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",
389          s->path, errorstr);
390      s->eof = 1;
391      goto beach;
392    }
393  } while (avPacket.stream_index != s->selected_stream);
394
395#if FF_API_LAVF_AVCTX
396  ret = avcodec_send_packet(avCodecCtx, &avPacket);
397  if (ret < 0 && ret != AVERROR_EOF) {
398    AUBIO_ERR("source_avcodec: error when sending packet for %s\n", s->path);
399    goto beach;
400  }
401  ret = avcodec_receive_frame(avCodecCtx, avFrame);
402  if (ret >= 0) {
403    got_frame = 1;
404  }
405  if (ret < 0) {
406    if (ret == AVERROR(EAGAIN)) {
407      //AUBIO_WRN("source_avcodec: output is not available right now - "
408      //    "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, "
412          "and there will be no more output frames\n");
413    } else {
414      AUBIO_ERR("source_avcodec: decoding errors on %s\n", s->path);
415      goto beach;
416    }
417  }
418#else
419  len = avcodec_decode_audio4(avCodecCtx, avFrame, &got_frame, &avPacket);
420
421  if (len < 0) {
422    AUBIO_ERR("source_avcodec: error while decoding %s\n", s->path);
423    goto beach;
424  }
425#endif
426  if (got_frame == 0) {
427    AUBIO_WRN("source_avcodec: did not get a frame when reading %s\n",
428        s->path);
429    goto beach;
430  }
431
432#if LIBAVUTIL_VERSION_MAJOR > 52
433  if (avFrame->channels != (sint_t)s->input_channels) {
434    AUBIO_WRN ("source_avcodec: trying to read from %d channel(s),"
435        "but configured for %d; is '%s' corrupt?\n",
436        avFrame->channels, s->input_channels, s->path);
437    goto beach;
438  }
439#else
440#warning "avutil < 53 is deprecated, crashes might occur on corrupt files"
441#endif
442
443#ifdef HAVE_AVRESAMPLE
444  in_linesize = 0;
445  av_samples_get_buffer_size(&in_linesize, avCodecCtx->channels,
446      avFrame->nb_samples, avCodecCtx->sample_fmt, 1);
447  in_samples = avFrame->nb_samples;
448  out_linesize = 0;
449  max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE;
450  out_samples = avresample_convert ( avr,
451        (uint8_t **)&output, out_linesize, max_out_samples,
452        (uint8_t **)avFrame->data, in_linesize, in_samples);
453#elif defined(HAVE_SWRESAMPLE)
454  in_samples = avFrame->nb_samples;
455  max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE / avCodecCtx->channels;
456  out_samples = swr_convert( avr,
457      (uint8_t **)&output, max_out_samples,
458      (const uint8_t **)avFrame->data, in_samples);
459#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
460  if (out_samples <= 0) {
461    AUBIO_WRN("source_avcodec: no sample found while converting frame (%s)\n",
462        s->path);
463    goto beach;
464  }
465
466  *read_samples = out_samples;
467
468beach:
469  s->avFormatCtx = avFormatCtx;
470  s->avCodecCtx = avCodecCtx;
471  s->avFrame = avFrame;
472#if defined(HAVE_AVRESAMPLE) || defined(HAVE_SWRESAMPLE)
473  s->avr = avr;
474#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
475  s->output = output;
476
477  av_packet_unref(&avPacket);
478}
479
480void aubio_source_avcodec_do(aubio_source_avcodec_t * s, fvec_t * read_data,
481    uint_t * read) {
482  uint_t i, j;
483  uint_t end = 0;
484  uint_t total_wrote = 0;
485  while (total_wrote < s->hop_size) {
486    end = MIN(s->read_samples - s->read_index, s->hop_size - total_wrote);
487    for (i = 0; i < end; i++) {
488      read_data->data[i + total_wrote] = 0.;
489      for (j = 0; j < s->input_channels; j++) {
490        read_data->data[i + total_wrote] +=
491          s->output[(i + s->read_index) * s->input_channels + j];
492      }
493      read_data->data[i + total_wrote] *= 1./s->input_channels;
494    }
495    total_wrote += end;
496    if (total_wrote < s->hop_size) {
497      uint_t avcodec_read = 0;
498      aubio_source_avcodec_readframe(s, &avcodec_read);
499      s->read_samples = avcodec_read;
500      s->read_index = 0;
501      if (s->eof) {
502        break;
503      }
504    } else {
505      s->read_index += end;
506    }
507  }
508  if (total_wrote < s->hop_size) {
509    for (i = total_wrote; i < s->hop_size; i++) {
510      read_data->data[i] = 0.;
511    }
512  }
513  *read = total_wrote;
514}
515
516void aubio_source_avcodec_do_multi(aubio_source_avcodec_t * s,
517    fmat_t * read_data, uint_t * read) {
518  uint_t i,j;
519  uint_t end = 0;
520  uint_t total_wrote = 0;
521  while (total_wrote < s->hop_size) {
522    end = MIN(s->read_samples - s->read_index, s->hop_size - total_wrote);
523    for (j = 0; j < read_data->height; j++) {
524      for (i = 0; i < end; i++) {
525        read_data->data[j][i + total_wrote] =
526          s->output[(i + s->read_index) * s->input_channels + j];
527      }
528    }
529    total_wrote += end;
530    if (total_wrote < s->hop_size) {
531      uint_t avcodec_read = 0;
532      aubio_source_avcodec_readframe(s, &avcodec_read);
533      s->read_samples = avcodec_read;
534      s->read_index = 0;
535      if (s->eof) {
536        break;
537      }
538    } else {
539      s->read_index += end;
540    }
541  }
542  if (total_wrote < s->hop_size) {
543    for (j = 0; j < read_data->height; j++) {
544      for (i = total_wrote; i < s->hop_size; i++) {
545        read_data->data[j][i] = 0.;
546      }
547    }
548  }
549  *read = total_wrote;
550}
551
552uint_t aubio_source_avcodec_get_samplerate(const aubio_source_avcodec_t * s) {
553  return s->samplerate;
554}
555
556uint_t aubio_source_avcodec_get_channels(const aubio_source_avcodec_t * s) {
557  return s->input_channels;
558}
559
560uint_t aubio_source_avcodec_seek (aubio_source_avcodec_t * s, uint_t pos) {
561  int64_t resampled_pos =
562    (uint_t)ROUND(pos * (s->input_samplerate * 1. / s->samplerate));
563  int64_t min_ts = MAX(resampled_pos - 2000, 0);
564  int64_t max_ts = MIN(resampled_pos + 2000, INT64_MAX);
565  int seek_flags = AVSEEK_FLAG_FRAME | AVSEEK_FLAG_ANY;
566  int ret = AUBIO_FAIL;
567  if (s->avFormatCtx != NULL && s->avr != NULL) {
568    ret = AUBIO_OK;
569  } else {
570    AUBIO_ERR("source_avcodec: failed seeking in %s (file not opened?)",
571        s->path);
572    return ret;
573  }
574  if ((sint_t)pos < 0) {
575    AUBIO_ERR("source_avcodec: could not seek %s at %d (seeking position"
576       " should be >= 0)\n", s->path, pos);
577    return AUBIO_FAIL;
578  }
579  ret = avformat_seek_file(s->avFormatCtx, s->selected_stream,
580      min_ts, resampled_pos, max_ts, seek_flags);
581  if (ret < 0) {
582    AUBIO_ERR("source_avcodec: failed seeking to %d in file %s",
583        pos, s->path);
584  }
585  // reset read status
586  s->eof = 0;
587  s->read_index = 0;
588  s->read_samples = 0;
589#ifdef HAVE_AVRESAMPLE
590  // reset the AVAudioResampleContext
591  avresample_close(s->avr);
592  avresample_open(s->avr);
593#elif defined(HAVE_SWRESAMPLE)
594  swr_close(s->avr);
595  swr_init(s->avr);
596#endif
597  return ret;
598}
599
600uint_t aubio_source_avcodec_get_duration (aubio_source_avcodec_t * s) {
601  if (s && &(s->avFormatCtx) != NULL) {
602    int64_t duration = s->avFormatCtx->duration;
603    return s->samplerate * ((uint_t)duration / 1e6 );
604  }
605  return 0;
606}
607
608uint_t aubio_source_avcodec_close(aubio_source_avcodec_t * s) {
609  if (s->avr != NULL) {
610#ifdef HAVE_AVRESAMPLE
611    avresample_close( s->avr );
612#elif defined(HAVE_SWRESAMPLE)
613    swr_close ( s->avr );
614#endif
615    av_free ( s->avr );
616  }
617  s->avr = NULL;
618  if (s->avCodecCtx != NULL) {
619#ifndef HAVE_AUBIO_LIBAVCODEC_DEPRECATED
620    avcodec_free_context( &s->avCodecCtx );
621#else
622    avcodec_close ( s->avCodecCtx );
623#endif
624  }
625  s->avCodecCtx = NULL;
626  if (s->avFormatCtx != NULL) {
627    avformat_close_input(&s->avFormatCtx);
628    s->avFormatCtx = NULL;
629  }
630  av_packet_unref(&s->avPacket);
631  return AUBIO_OK;
632}
633
634void del_aubio_source_avcodec(aubio_source_avcodec_t * s){
635  if (!s) return;
636  aubio_source_avcodec_close(s);
637  if (s->output != NULL) {
638    av_free(s->output);
639  }
640  s->output = NULL;
641  if (s->avFrame != NULL) {
642    av_frame_free( &(s->avFrame) );
643  }
644  s->avFrame = NULL;
645  if (s->path) {
646    AUBIO_FREE(s->path);
647  }
648  s->path = NULL;
649  AUBIO_FREE(s);
650}
651
652#endif /* HAVE_LIBAV */
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