source: src/io/source_avcodec.c @ 0f5837d

feature/autosinkfeature/constantqfeature/pitchshiftfeature/timestretch
Last change on this file since 0f5837d was 0f5837d, checked in by Paul Brossier <piem@piem.org>, 15 months ago

[io] avoid deprecation warning with ffmpeg

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File size: 19.2 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#if FFMPEG_LIBAVFORMAT // deprecated with ffmpeg, required with libav
243  av_codec_set_pkt_timebase(avCodecCtx,
244      avFormatCtx->streams[selected_stream]->time_base);
245#endif
246#endif
247
248  if ( ( err = avcodec_open2(avCodecCtx, codec, NULL) ) < 0) {
249    char errorstr[256];
250    av_strerror (err, errorstr, sizeof(errorstr));
251    AUBIO_ERR("source_avcodec: Could not load codec for %s (%s)\n", s->path,
252        errorstr);
253    goto beach;
254  }
255
256  /* get input specs */
257  s->input_samplerate = avCodecCtx->sample_rate;
258  s->input_channels   = avCodecCtx->channels;
259  //AUBIO_DBG("input_samplerate: %d\n", s->input_samplerate);
260  //AUBIO_DBG("input_channels: %d\n", s->input_channels);
261
262  if (samplerate == 0) {
263    s->samplerate = s->input_samplerate;
264  } else {
265    s->samplerate = samplerate;
266  }
267
268  if (s->samplerate >  s->input_samplerate) {
269    AUBIO_WRN("source_avcodec: upsampling %s from %d to %d\n", s->path,
270        s->input_samplerate, s->samplerate);
271  }
272
273  avFrame = av_frame_alloc();
274  if (!avFrame) {
275    AUBIO_ERR("source_avcodec: Could not allocate frame for (%s)\n", s->path);
276  }
277
278  /* allocate output for avr */
279  s->output = (smpl_t *)av_malloc(AUBIO_AVCODEC_MAX_BUFFER_SIZE
280      * sizeof(smpl_t));
281
282  s->read_samples = 0;
283  s->read_index = 0;
284
285  s->avFormatCtx = avFormatCtx;
286  s->avCodecCtx = avCodecCtx;
287  s->avFrame = avFrame;
288
289  aubio_source_avcodec_reset_resampler(s);
290
291  if (s->avr == NULL) goto beach;
292
293  s->eof = 0;
294
295  //av_log_set_level(AV_LOG_QUIET);
296
297  return s;
298
299beach:
300  //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
301  //    s->path, s->samplerate, s->hop_size);
302  del_aubio_source_avcodec(s);
303  return NULL;
304}
305
306void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s)
307{
308  // create or reset resampler to/from mono/multi-channel
309  if ( s->avr == NULL ) {
310    int err;
311    int64_t input_layout = av_get_default_channel_layout(s->input_channels);
312    int64_t output_layout = av_get_default_channel_layout(s->input_channels);
313#ifdef HAVE_AVRESAMPLE
314    AVAudioResampleContext *avr = avresample_alloc_context();
315#elif defined(HAVE_SWRESAMPLE)
316    SwrContext *avr = swr_alloc();
317#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
318
319    av_opt_set_int(avr, "in_channel_layout",  input_layout,              0);
320    av_opt_set_int(avr, "out_channel_layout", output_layout,             0);
321    av_opt_set_int(avr, "in_sample_rate",     s->input_samplerate,       0);
322    av_opt_set_int(avr, "out_sample_rate",    s->samplerate,             0);
323    av_opt_set_int(avr, "in_sample_fmt",      s->avCodecCtx->sample_fmt, 0);
324#if HAVE_AUBIO_DOUBLE
325    av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_DBL,         0);
326#else
327    av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLT,         0);
328#endif
329    // TODO: use planar?
330    //av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLTP,      0);
331#ifdef HAVE_AVRESAMPLE
332    if ( ( err = avresample_open(avr) ) < 0)
333#elif defined(HAVE_SWRESAMPLE)
334    if ( ( err = swr_init(avr) ) < 0)
335#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
336    {
337      char errorstr[256];
338      av_strerror (err, errorstr, sizeof(errorstr));
339      AUBIO_ERR("source_avcodec: Could not open resampling context"
340         " for %s (%s)\n", s->path, errorstr);
341      return;
342    }
343    s->avr = avr;
344  }
345}
346
347void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s,
348    uint_t * read_samples)
349{
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",
391          s->path, errorstr);
392      s->eof = 1;
393      goto beach;
394    }
395  } while (avPacket.stream_index != s->selected_stream);
396
397#if FF_API_LAVF_AVCTX
398  ret = avcodec_send_packet(avCodecCtx, &avPacket);
399  if (ret < 0 && ret != AVERROR_EOF) {
400    AUBIO_ERR("source_avcodec: error when sending packet for %s\n", s->path);
401    goto beach;
402  }
403  ret = avcodec_receive_frame(avCodecCtx, avFrame);
404  if (ret >= 0) {
405    got_frame = 1;
406  }
407  if (ret < 0) {
408    if (ret == AVERROR(EAGAIN)) {
409      //AUBIO_WRN("source_avcodec: output is not available right now - "
410      //    "user must try to send new input\n");
411      goto beach;
412    } else if (ret == AVERROR_EOF) {
413      AUBIO_WRN("source_avcodec: the decoder has been fully flushed, "
414          "and there will be no more output frames\n");
415    } else {
416      AUBIO_ERR("source_avcodec: decoding errors on %s\n", s->path);
417      goto beach;
418    }
419  }
420#else
421  len = avcodec_decode_audio4(avCodecCtx, avFrame, &got_frame, &avPacket);
422
423  if (len < 0) {
424    AUBIO_ERR("source_avcodec: error while decoding %s\n", s->path);
425    goto beach;
426  }
427#endif
428  if (got_frame == 0) {
429    AUBIO_WRN("source_avcodec: did not get a frame when reading %s\n",
430        s->path);
431    goto beach;
432  }
433
434#if LIBAVUTIL_VERSION_MAJOR > 52
435  if (avFrame->channels != (sint_t)s->input_channels) {
436    AUBIO_WRN ("source_avcodec: trying to read from %d channel(s),"
437        "but configured for %d; is '%s' corrupt?\n",
438        avFrame->channels, s->input_channels, s->path);
439    goto beach;
440  }
441#else
442#warning "avutil < 53 is deprecated, crashes might occur on corrupt files"
443#endif
444
445#ifdef HAVE_AVRESAMPLE
446  in_linesize = 0;
447  av_samples_get_buffer_size(&in_linesize, avCodecCtx->channels,
448      avFrame->nb_samples, avCodecCtx->sample_fmt, 1);
449  in_samples = avFrame->nb_samples;
450  out_linesize = 0;
451  max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE;
452  out_samples = avresample_convert ( avr,
453        (uint8_t **)&output, out_linesize, max_out_samples,
454        (uint8_t **)avFrame->data, in_linesize, in_samples);
455#elif defined(HAVE_SWRESAMPLE)
456  in_samples = avFrame->nb_samples;
457  max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE / avCodecCtx->channels;
458  out_samples = swr_convert( avr,
459      (uint8_t **)&output, max_out_samples,
460      (const uint8_t **)avFrame->data, in_samples);
461#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
462  if (out_samples <= 0) {
463    AUBIO_WRN("source_avcodec: no sample found while converting frame (%s)\n",
464        s->path);
465    goto beach;
466  }
467
468  *read_samples = out_samples;
469
470beach:
471  s->avFormatCtx = avFormatCtx;
472  s->avCodecCtx = avCodecCtx;
473  s->avFrame = avFrame;
474#if defined(HAVE_AVRESAMPLE) || defined(HAVE_SWRESAMPLE)
475  s->avr = avr;
476#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
477  s->output = output;
478
479  av_packet_unref(&avPacket);
480}
481
482void aubio_source_avcodec_do(aubio_source_avcodec_t * s, fvec_t * read_data,
483    uint_t * read) {
484  uint_t i, j;
485  uint_t end = 0;
486  uint_t total_wrote = 0;
487  while (total_wrote < s->hop_size) {
488    end = MIN(s->read_samples - s->read_index, s->hop_size - total_wrote);
489    for (i = 0; i < end; i++) {
490      read_data->data[i + total_wrote] = 0.;
491      for (j = 0; j < s->input_channels; j++) {
492        read_data->data[i + total_wrote] +=
493          s->output[(i + s->read_index) * s->input_channels + j];
494      }
495      read_data->data[i + total_wrote] *= 1./s->input_channels;
496    }
497    total_wrote += end;
498    if (total_wrote < s->hop_size) {
499      uint_t avcodec_read = 0;
500      aubio_source_avcodec_readframe(s, &avcodec_read);
501      s->read_samples = avcodec_read;
502      s->read_index = 0;
503      if (s->eof) {
504        break;
505      }
506    } else {
507      s->read_index += end;
508    }
509  }
510  if (total_wrote < s->hop_size) {
511    for (i = total_wrote; i < s->hop_size; i++) {
512      read_data->data[i] = 0.;
513    }
514  }
515  *read = total_wrote;
516}
517
518void aubio_source_avcodec_do_multi(aubio_source_avcodec_t * s,
519    fmat_t * read_data, uint_t * read) {
520  uint_t i,j;
521  uint_t end = 0;
522  uint_t total_wrote = 0;
523  while (total_wrote < s->hop_size) {
524    end = MIN(s->read_samples - s->read_index, s->hop_size - total_wrote);
525    for (j = 0; j < read_data->height; j++) {
526      for (i = 0; i < end; i++) {
527        read_data->data[j][i + total_wrote] =
528          s->output[(i + s->read_index) * s->input_channels + j];
529      }
530    }
531    total_wrote += end;
532    if (total_wrote < s->hop_size) {
533      uint_t avcodec_read = 0;
534      aubio_source_avcodec_readframe(s, &avcodec_read);
535      s->read_samples = avcodec_read;
536      s->read_index = 0;
537      if (s->eof) {
538        break;
539      }
540    } else {
541      s->read_index += end;
542    }
543  }
544  if (total_wrote < s->hop_size) {
545    for (j = 0; j < read_data->height; j++) {
546      for (i = total_wrote; i < s->hop_size; i++) {
547        read_data->data[j][i] = 0.;
548      }
549    }
550  }
551  *read = total_wrote;
552}
553
554uint_t aubio_source_avcodec_get_samplerate(const aubio_source_avcodec_t * s) {
555  return s->samplerate;
556}
557
558uint_t aubio_source_avcodec_get_channels(const aubio_source_avcodec_t * s) {
559  return s->input_channels;
560}
561
562uint_t aubio_source_avcodec_seek (aubio_source_avcodec_t * s, uint_t pos) {
563  int64_t resampled_pos =
564    (uint_t)ROUND(pos * (s->input_samplerate * 1. / s->samplerate));
565  int64_t min_ts = MAX(resampled_pos - 2000, 0);
566  int64_t max_ts = MIN(resampled_pos + 2000, INT64_MAX);
567  int seek_flags = AVSEEK_FLAG_FRAME | AVSEEK_FLAG_ANY;
568  int ret = AUBIO_FAIL;
569  if (s->avFormatCtx != NULL && s->avr != NULL) {
570    ret = AUBIO_OK;
571  } else {
572    AUBIO_ERR("source_avcodec: failed seeking in %s (file not opened?)",
573        s->path);
574    return ret;
575  }
576  if ((sint_t)pos < 0) {
577    AUBIO_ERR("source_avcodec: could not seek %s at %d (seeking position"
578       " should be >= 0)\n", s->path, pos);
579    return AUBIO_FAIL;
580  }
581  ret = avformat_seek_file(s->avFormatCtx, s->selected_stream,
582      min_ts, resampled_pos, max_ts, seek_flags);
583  if (ret < 0) {
584    AUBIO_ERR("source_avcodec: failed seeking to %d in file %s",
585        pos, s->path);
586  }
587  // reset read status
588  s->eof = 0;
589  s->read_index = 0;
590  s->read_samples = 0;
591#ifdef HAVE_AVRESAMPLE
592  // reset the AVAudioResampleContext
593  avresample_close(s->avr);
594  avresample_open(s->avr);
595#elif defined(HAVE_SWRESAMPLE)
596  swr_close(s->avr);
597  swr_init(s->avr);
598#endif
599  return ret;
600}
601
602uint_t aubio_source_avcodec_get_duration (aubio_source_avcodec_t * s) {
603  if (s && &(s->avFormatCtx) != NULL) {
604    int64_t duration = s->avFormatCtx->duration;
605    return s->samplerate * ((uint_t)duration / 1e6 );
606  }
607  return 0;
608}
609
610uint_t aubio_source_avcodec_close(aubio_source_avcodec_t * s) {
611  if (s->avr != NULL) {
612#ifdef HAVE_AVRESAMPLE
613    avresample_close( s->avr );
614#elif defined(HAVE_SWRESAMPLE)
615    swr_close ( s->avr );
616#endif
617    av_free ( s->avr );
618  }
619  s->avr = NULL;
620  if (s->avCodecCtx != NULL) {
621#ifndef HAVE_AUBIO_LIBAVCODEC_DEPRECATED
622    avcodec_free_context( &s->avCodecCtx );
623#else
624    avcodec_close ( s->avCodecCtx );
625#endif
626  }
627  s->avCodecCtx = NULL;
628  if (s->avFormatCtx != NULL) {
629    avformat_close_input(&s->avFormatCtx);
630    s->avFormatCtx = NULL;
631  }
632  av_packet_unref(&s->avPacket);
633  return AUBIO_OK;
634}
635
636void del_aubio_source_avcodec(aubio_source_avcodec_t * s){
637  if (!s) return;
638  aubio_source_avcodec_close(s);
639  if (s->output != NULL) {
640    av_free(s->output);
641  }
642  s->output = NULL;
643  if (s->avFrame != NULL) {
644    av_frame_free( &(s->avFrame) );
645  }
646  s->avFrame = NULL;
647  if (s->path) {
648    AUBIO_FREE(s->path);
649  }
650  s->path = NULL;
651  AUBIO_FREE(s);
652}
653
654#endif /* HAVE_LIBAV */
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