source: src/io/source_avcodec.c @ c0a1906

feature/autosinkfeature/constantqfeature/pitchshiftfeature/timestretch
Last change on this file since c0a1906 was c0a1906, checked in by Paul Brossier <piem@piem.org>, 12 months ago

[source] simplify and avoid unrequired checks

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File size: 19.3 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(58,3,102)
50#define HAVE_AUBIO_LIBAVCODEC_TIMEBASE_FIX 1
51#endif
52
53#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55,28,1)
54#warning "libavcodec < 56 is deprecated"
55#define av_frame_alloc  avcodec_alloc_frame
56#define av_frame_free avcodec_free_frame
57#define av_packet_unref av_free_packet
58#endif
59
60#include "aubio_priv.h"
61#include "fvec.h"
62#include "fmat.h"
63#include "source_avcodec.h"
64
65#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(56, 56, 0)
66#define AUBIO_AVCODEC_MAX_BUFFER_SIZE FF_MIN_BUFFER_SIZE
67#else
68#define AUBIO_AVCODEC_MAX_BUFFER_SIZE AV_INPUT_BUFFER_MIN_SIZE
69#endif
70
71struct _aubio_source_avcodec_t {
72  uint_t hop_size;
73  uint_t samplerate;
74  uint_t channels;
75
76  // some data about the file
77  char_t *path;
78  uint_t input_samplerate;
79  uint_t input_channels;
80
81  // avcodec stuff
82  AVFormatContext *avFormatCtx;
83  AVCodecContext *avCodecCtx;
84  AVFrame *avFrame;
85  AVPacket avPacket;
86#ifdef HAVE_AVRESAMPLE
87  AVAudioResampleContext *avr;
88#elif defined(HAVE_SWRESAMPLE)
89  SwrContext *avr;
90#endif
91  smpl_t *output;
92  uint_t read_samples;
93  uint_t read_index;
94  sint_t selected_stream;
95  uint_t eof;
96};
97
98// create or re-create the context when _do or _do_multi is called
99void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s);
100// actually read a frame
101void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s,
102    uint_t * read_samples);
103
104uint_t aubio_source_avcodec_has_network_url(aubio_source_avcodec_t *s);
105
106uint_t aubio_source_avcodec_has_network_url(aubio_source_avcodec_t *s) {
107  char proto[20], authorization[256], hostname[128], uripath[256];
108  int proto_size = 20, authorization_size = 256, hostname_size = 128,
109      *port_ptr = 0, path_size = 256;
110  av_url_split(proto, proto_size, authorization, authorization_size, hostname,
111      hostname_size, port_ptr, uripath, path_size, s->path);
112  if (strlen(proto)) {
113    return 1;
114  }
115  return 0;
116}
117
118
119aubio_source_avcodec_t * new_aubio_source_avcodec(const char_t * path,
120    uint_t samplerate, uint_t hop_size) {
121  aubio_source_avcodec_t * s = AUBIO_NEW(aubio_source_avcodec_t);
122  AVFormatContext *avFormatCtx = s->avFormatCtx;
123  AVCodecContext *avCodecCtx = s->avCodecCtx;
124  AVFrame *avFrame = s->avFrame;
125  sint_t selected_stream = -1;
126#if FF_API_LAVF_AVCTX
127  AVCodecParameters *codecpar;
128#endif
129  AVCodec *codec;
130  uint_t i;
131  int err;
132  if (path == NULL) {
133    AUBIO_ERR("source_avcodec: Aborted opening null path\n");
134    goto beach;
135  }
136  if ((sint_t)samplerate < 0) {
137    AUBIO_ERR("source_avcodec: Can not open %s with samplerate %d\n",
138        path, samplerate);
139    goto beach;
140  }
141  if ((sint_t)hop_size <= 0) {
142    AUBIO_ERR("source_avcodec: Can not open %s with hop_size %d\n",
143        path, hop_size);
144    goto beach;
145  }
146
147  s->hop_size = hop_size;
148  s->channels = 1;
149
150  s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);
151  strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);
152
153#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(58,0,0)
154  // register all formats and codecs
155  av_register_all();
156#endif
157
158  if (aubio_source_avcodec_has_network_url(s)) {
159    avformat_network_init();
160  }
161
162  // try opening the file and get some info about it
163  avFormatCtx = NULL;
164  if ( (err = avformat_open_input(&avFormatCtx, s->path, NULL, NULL) ) < 0 ) {
165    char errorstr[256];
166    av_strerror (err, errorstr, sizeof(errorstr));
167    AUBIO_ERR("source_avcodec: Failed opening %s (%s)\n", s->path, errorstr);
168    goto beach;
169  }
170
171  // try to make sure max_analyze_duration is big enough for most songs
172#if FFMPEG_LIBAVFORMAT_MAX_DUR2
173  avFormatCtx->max_analyze_duration2 *= 100;
174#else
175  avFormatCtx->max_analyze_duration *= 100;
176#endif
177
178  // retrieve stream information
179  if ( (err = avformat_find_stream_info(avFormatCtx, NULL)) < 0 ) {
180    char errorstr[256];
181    av_strerror (err, errorstr, sizeof(errorstr));
182    AUBIO_ERR("source_avcodec: Could not find stream information "
183        "for %s (%s)\n", s->path, errorstr);
184    goto beach;
185  }
186
187  // dump information about file onto standard error
188  //av_dump_format(avFormatCtx, 0, s->path, 0);
189
190  // look for the first audio stream
191  for (i = 0; i < avFormatCtx->nb_streams; i++) {
192#if FF_API_LAVF_AVCTX
193    if (avFormatCtx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
194#else
195    if (avFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
196#endif
197      if (selected_stream == -1) {
198        selected_stream = i;
199      } else {
200        AUBIO_WRN("source_avcodec: More than one audio stream in %s, "
201            "taking the first one\n", s->path);
202      }
203    }
204  }
205  if (selected_stream == -1) {
206    AUBIO_ERR("source_avcodec: No audio stream in %s\n", s->path);
207    goto beach;
208  }
209  //AUBIO_DBG("Taking stream %d in file %s\n", selected_stream, s->path);
210  s->selected_stream = selected_stream;
211
212#if FF_API_LAVF_AVCTX
213  codecpar = avFormatCtx->streams[selected_stream]->codecpar;
214  if (codecpar == NULL) {
215    AUBIO_ERR("source_avcodec: Could not find decoder for %s", s->path);
216    goto beach;
217  }
218  codec = avcodec_find_decoder(codecpar->codec_id);
219
220  /* Allocate a codec context for the decoder */
221  avCodecCtx = avcodec_alloc_context3(codec);
222  if (!avCodecCtx) {
223    AUBIO_ERR("source_avcodec: Failed to allocate the %s codec context "
224        "for path %s\n", av_get_media_type_string(AVMEDIA_TYPE_AUDIO),
225        s->path);
226    goto beach;
227  }
228#else
229  avCodecCtx = avFormatCtx->streams[selected_stream]->codec;
230  codec = avcodec_find_decoder(avCodecCtx->codec_id);
231#endif
232  if (codec == NULL) {
233    AUBIO_ERR("source_avcodec: Could not find decoder for %s", s->path);
234    goto beach;
235  }
236
237#if FF_API_LAVF_AVCTX
238  /* Copy codec parameters from input stream to output codec context */
239  if ((err = avcodec_parameters_to_context(avCodecCtx, codecpar)) < 0) {
240    AUBIO_ERR("source_avcodec: Failed to copy %s codec parameters to "
241        "decoder context for %s\n",
242        av_get_media_type_string(AVMEDIA_TYPE_AUDIO), s->path);
243    goto beach;
244  }
245#if HAVE_AUBIO_LIBAVCODEC_TIMEBASE_FIX
246  // avoids 'skipped frames warning' with avecodec < 58, deprecated after
247  av_codec_set_pkt_timebase(avCodecCtx,
248      avFormatCtx->streams[selected_stream]->time_base);
249#endif
250#endif
251
252  if ( ( err = avcodec_open2(avCodecCtx, codec, NULL) ) < 0) {
253    char errorstr[256];
254    av_strerror (err, errorstr, sizeof(errorstr));
255    AUBIO_ERR("source_avcodec: Could not load codec for %s (%s)\n", s->path,
256        errorstr);
257    goto beach;
258  }
259
260  /* get input specs */
261  s->input_samplerate = avCodecCtx->sample_rate;
262  s->input_channels   = avCodecCtx->channels;
263  //AUBIO_DBG("input_samplerate: %d\n", s->input_samplerate);
264  //AUBIO_DBG("input_channels: %d\n", s->input_channels);
265
266  if (samplerate == 0) {
267    s->samplerate = s->input_samplerate;
268  } else {
269    s->samplerate = samplerate;
270  }
271
272  if (s->samplerate >  s->input_samplerate) {
273    AUBIO_WRN("source_avcodec: upsampling %s from %d to %d\n", s->path,
274        s->input_samplerate, s->samplerate);
275  }
276
277  avFrame = av_frame_alloc();
278  if (!avFrame) {
279    AUBIO_ERR("source_avcodec: Could not allocate frame for (%s)\n", s->path);
280  }
281
282  /* allocate output for avr */
283  s->output = (smpl_t *)av_malloc(AUBIO_AVCODEC_MAX_BUFFER_SIZE
284      * sizeof(smpl_t));
285
286  s->read_samples = 0;
287  s->read_index = 0;
288
289  s->avFormatCtx = avFormatCtx;
290  s->avCodecCtx = avCodecCtx;
291  s->avFrame = avFrame;
292
293  aubio_source_avcodec_reset_resampler(s);
294
295  if (s->avr == NULL) goto beach;
296
297  s->eof = 0;
298
299  //av_log_set_level(AV_LOG_QUIET);
300
301  return s;
302
303beach:
304  //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
305  //    s->path, s->samplerate, s->hop_size);
306  del_aubio_source_avcodec(s);
307  return NULL;
308}
309
310void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s)
311{
312  // create or reset resampler to/from mono/multi-channel
313  if ( s->avr == NULL ) {
314    int err;
315    int64_t input_layout = av_get_default_channel_layout(s->input_channels);
316    int64_t output_layout = av_get_default_channel_layout(s->input_channels);
317#ifdef HAVE_AVRESAMPLE
318    AVAudioResampleContext *avr = avresample_alloc_context();
319#elif defined(HAVE_SWRESAMPLE)
320    SwrContext *avr = swr_alloc();
321#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
322
323    av_opt_set_int(avr, "in_channel_layout",  input_layout,              0);
324    av_opt_set_int(avr, "out_channel_layout", output_layout,             0);
325    av_opt_set_int(avr, "in_sample_rate",     s->input_samplerate,       0);
326    av_opt_set_int(avr, "out_sample_rate",    s->samplerate,             0);
327    av_opt_set_int(avr, "in_sample_fmt",      s->avCodecCtx->sample_fmt, 0);
328#if HAVE_AUBIO_DOUBLE
329    av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_DBL,         0);
330#else
331    av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLT,         0);
332#endif
333    // TODO: use planar?
334    //av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLTP,      0);
335#ifdef HAVE_AVRESAMPLE
336    if ( ( err = avresample_open(avr) ) < 0)
337#elif defined(HAVE_SWRESAMPLE)
338    if ( ( err = swr_init(avr) ) < 0)
339#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
340    {
341      char errorstr[256];
342      av_strerror (err, errorstr, sizeof(errorstr));
343      AUBIO_ERR("source_avcodec: Could not open resampling context"
344         " for %s (%s)\n", s->path, errorstr);
345      return;
346    }
347    s->avr = avr;
348  }
349}
350
351void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s,
352    uint_t * read_samples)
353{
354  AVFormatContext *avFormatCtx = s->avFormatCtx;
355  AVCodecContext *avCodecCtx = s->avCodecCtx;
356  AVFrame *avFrame = s->avFrame;
357  AVPacket avPacket = s->avPacket;
358#ifdef HAVE_AVRESAMPLE
359  AVAudioResampleContext *avr = s->avr;
360#elif defined(HAVE_SWRESAMPLE)
361  SwrContext *avr = s->avr;
362#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
363  int got_frame = 0;
364#ifdef HAVE_AVRESAMPLE
365  int in_linesize = 0;
366  int in_samples = avFrame->nb_samples;
367  int out_linesize = 0;
368  int max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE;
369  int out_samples = 0;
370#elif defined(HAVE_SWRESAMPLE)
371  int in_samples = avFrame->nb_samples;
372  int max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE / avCodecCtx->channels;
373  int out_samples = 0;
374#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
375  smpl_t *output = s->output;
376#ifndef FF_API_LAVF_AVCTX
377  int len = 0;
378#else
379  int ret = 0;
380#endif
381  av_init_packet (&avPacket);
382  *read_samples = 0;
383
384  do
385  {
386    int err = av_read_frame (avFormatCtx, &avPacket);
387    if (err == AVERROR_EOF) {
388      s->eof = 1;
389      goto beach;
390    }
391    if (err != 0) {
392      char errorstr[256];
393      av_strerror (err, errorstr, sizeof(errorstr));
394      AUBIO_ERR("source_avcodec: could not read frame in %s (%s)\n",
395          s->path, errorstr);
396      s->eof = 1;
397      goto beach;
398    }
399  } while (avPacket.stream_index != s->selected_stream);
400
401#if FF_API_LAVF_AVCTX
402  ret = avcodec_send_packet(avCodecCtx, &avPacket);
403  if (ret < 0 && ret != AVERROR_EOF) {
404    AUBIO_ERR("source_avcodec: error when sending packet for %s\n", s->path);
405    goto beach;
406  }
407  ret = avcodec_receive_frame(avCodecCtx, avFrame);
408  if (ret >= 0) {
409    got_frame = 1;
410  }
411  if (ret < 0) {
412    if (ret == AVERROR(EAGAIN)) {
413      //AUBIO_WRN("source_avcodec: output is not available right now - "
414      //    "user must try to send new input\n");
415      goto beach;
416    } else if (ret == AVERROR_EOF) {
417      AUBIO_WRN("source_avcodec: the decoder has been fully flushed, "
418          "and there will be no more output frames\n");
419    } else {
420      AUBIO_ERR("source_avcodec: decoding errors on %s\n", s->path);
421      goto beach;
422    }
423  }
424#else
425  len = avcodec_decode_audio4(avCodecCtx, avFrame, &got_frame, &avPacket);
426
427  if (len < 0) {
428    AUBIO_ERR("source_avcodec: error while decoding %s\n", s->path);
429    goto beach;
430  }
431#endif
432  if (got_frame == 0) {
433    AUBIO_WRN("source_avcodec: did not get a frame when reading %s\n",
434        s->path);
435    goto beach;
436  }
437
438#if LIBAVUTIL_VERSION_MAJOR > 52
439  if (avFrame->channels != (sint_t)s->input_channels) {
440    AUBIO_WRN ("source_avcodec: trying to read from %d channel(s),"
441        "but configured for %d; is '%s' corrupt?\n",
442        avFrame->channels, s->input_channels, s->path);
443    goto beach;
444  }
445#else
446#warning "avutil < 53 is deprecated, crashes might occur on corrupt files"
447#endif
448
449#ifdef HAVE_AVRESAMPLE
450  in_linesize = 0;
451  av_samples_get_buffer_size(&in_linesize, avCodecCtx->channels,
452      avFrame->nb_samples, avCodecCtx->sample_fmt, 1);
453  in_samples = avFrame->nb_samples;
454  out_linesize = 0;
455  max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE;
456  out_samples = avresample_convert ( avr,
457        (uint8_t **)&output, out_linesize, max_out_samples,
458        (uint8_t **)avFrame->data, in_linesize, in_samples);
459#elif defined(HAVE_SWRESAMPLE)
460  in_samples = avFrame->nb_samples;
461  max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE / avCodecCtx->channels;
462  out_samples = swr_convert( avr,
463      (uint8_t **)&output, max_out_samples,
464      (const uint8_t **)avFrame->data, in_samples);
465#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
466  if (out_samples <= 0) {
467    AUBIO_WRN("source_avcodec: no sample found while converting frame (%s)\n",
468        s->path);
469    goto beach;
470  }
471
472  *read_samples = out_samples;
473
474beach:
475  s->avFormatCtx = avFormatCtx;
476  s->avCodecCtx = avCodecCtx;
477  s->avFrame = avFrame;
478#if defined(HAVE_AVRESAMPLE) || defined(HAVE_SWRESAMPLE)
479  s->avr = avr;
480#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
481  s->output = output;
482
483  av_packet_unref(&avPacket);
484}
485
486void aubio_source_avcodec_do(aubio_source_avcodec_t * s, fvec_t * read_data,
487    uint_t * read) {
488  uint_t i, j;
489  uint_t end = 0;
490  uint_t total_wrote = 0;
491  while (total_wrote < s->hop_size) {
492    end = MIN(s->read_samples - s->read_index, s->hop_size - total_wrote);
493    for (i = 0; i < end; i++) {
494      read_data->data[i + total_wrote] = 0.;
495      for (j = 0; j < s->input_channels; j++) {
496        read_data->data[i + total_wrote] +=
497          s->output[(i + s->read_index) * s->input_channels + j];
498      }
499      read_data->data[i + total_wrote] *= 1./s->input_channels;
500    }
501    total_wrote += end;
502    if (total_wrote < s->hop_size) {
503      uint_t avcodec_read = 0;
504      aubio_source_avcodec_readframe(s, &avcodec_read);
505      s->read_samples = avcodec_read;
506      s->read_index = 0;
507      if (s->eof) {
508        break;
509      }
510    } else {
511      s->read_index += end;
512    }
513  }
514  if (total_wrote < s->hop_size) {
515    for (i = total_wrote; i < s->hop_size; i++) {
516      read_data->data[i] = 0.;
517    }
518  }
519  *read = total_wrote;
520}
521
522void aubio_source_avcodec_do_multi(aubio_source_avcodec_t * s,
523    fmat_t * read_data, uint_t * read) {
524  uint_t i,j;
525  uint_t end = 0;
526  uint_t total_wrote = 0;
527  while (total_wrote < s->hop_size) {
528    end = MIN(s->read_samples - s->read_index, s->hop_size - total_wrote);
529    for (j = 0; j < read_data->height; j++) {
530      for (i = 0; i < end; i++) {
531        read_data->data[j][i + total_wrote] =
532          s->output[(i + s->read_index) * s->input_channels + j];
533      }
534    }
535    total_wrote += end;
536    if (total_wrote < s->hop_size) {
537      uint_t avcodec_read = 0;
538      aubio_source_avcodec_readframe(s, &avcodec_read);
539      s->read_samples = avcodec_read;
540      s->read_index = 0;
541      if (s->eof) {
542        break;
543      }
544    } else {
545      s->read_index += end;
546    }
547  }
548  if (total_wrote < s->hop_size) {
549    for (j = 0; j < read_data->height; j++) {
550      for (i = total_wrote; i < s->hop_size; i++) {
551        read_data->data[j][i] = 0.;
552      }
553    }
554  }
555  *read = total_wrote;
556}
557
558uint_t aubio_source_avcodec_get_samplerate(const aubio_source_avcodec_t * s) {
559  return s->samplerate;
560}
561
562uint_t aubio_source_avcodec_get_channels(const aubio_source_avcodec_t * s) {
563  return s->input_channels;
564}
565
566uint_t aubio_source_avcodec_seek (aubio_source_avcodec_t * s, uint_t pos) {
567  int64_t resampled_pos =
568    (uint_t)ROUND(pos * (s->input_samplerate * 1. / s->samplerate));
569  int64_t min_ts = MAX(resampled_pos - 2000, 0);
570  int64_t max_ts = MIN(resampled_pos + 2000, INT64_MAX);
571  int seek_flags = AVSEEK_FLAG_FRAME | AVSEEK_FLAG_ANY;
572  int ret = AUBIO_FAIL;
573  if (s->avFormatCtx != NULL && s->avr != NULL) {
574    ret = AUBIO_OK;
575  } else {
576    AUBIO_ERR("source_avcodec: failed seeking in %s (file not opened?)",
577        s->path);
578    return ret;
579  }
580  if ((sint_t)pos < 0) {
581    AUBIO_ERR("source_avcodec: could not seek %s at %d (seeking position"
582       " should be >= 0)\n", s->path, pos);
583    return AUBIO_FAIL;
584  }
585  ret = avformat_seek_file(s->avFormatCtx, s->selected_stream,
586      min_ts, resampled_pos, max_ts, seek_flags);
587  if (ret < 0) {
588    AUBIO_ERR("source_avcodec: failed seeking to %d in file %s",
589        pos, s->path);
590  }
591  // reset read status
592  s->eof = 0;
593  s->read_index = 0;
594  s->read_samples = 0;
595#ifdef HAVE_AVRESAMPLE
596  // reset the AVAudioResampleContext
597  avresample_close(s->avr);
598  avresample_open(s->avr);
599#elif defined(HAVE_SWRESAMPLE)
600  swr_close(s->avr);
601  swr_init(s->avr);
602#endif
603  return ret;
604}
605
606uint_t aubio_source_avcodec_get_duration (aubio_source_avcodec_t * s) {
607  if (s && &(s->avFormatCtx) != NULL) {
608    int64_t duration = s->avFormatCtx->duration;
609    return s->samplerate * ((uint_t)duration / 1e6 );
610  }
611  return 0;
612}
613
614uint_t aubio_source_avcodec_close(aubio_source_avcodec_t * s) {
615  if (s->avr != NULL) {
616#ifdef HAVE_AVRESAMPLE
617    avresample_close( s->avr );
618#elif defined(HAVE_SWRESAMPLE)
619    swr_close ( s->avr );
620#endif
621    av_free ( s->avr );
622  }
623  s->avr = NULL;
624  if (s->avCodecCtx != NULL) {
625#ifndef HAVE_AUBIO_LIBAVCODEC_DEPRECATED
626    avcodec_free_context( &s->avCodecCtx );
627#else
628    avcodec_close ( s->avCodecCtx );
629#endif
630  }
631  s->avCodecCtx = NULL;
632  if (s->avFormatCtx != NULL) {
633    avformat_close_input(&s->avFormatCtx);
634    s->avFormatCtx = NULL;
635  }
636  av_packet_unref(&s->avPacket);
637  return AUBIO_OK;
638}
639
640void del_aubio_source_avcodec(aubio_source_avcodec_t * s){
641  AUBIO_ASSERT(s);
642  aubio_source_avcodec_close(s);
643  if (s->output != NULL) {
644    av_free(s->output);
645  }
646  s->output = NULL;
647  if (s->avFrame != NULL) {
648    av_frame_free( &(s->avFrame) );
649  }
650  s->avFrame = NULL;
651  if (s->path) {
652    AUBIO_FREE(s->path);
653  }
654  s->path = NULL;
655  AUBIO_FREE(s);
656}
657
658#endif /* HAVE_LIBAV */
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