source: src/io/source_avcodec.c @ 1e2811c

Last change on this file since 1e2811c was 8e9d3a3, checked in by Paul Brossier <piem@piem.org>, 12 months ago

[source_avcodec] remove deprecation warning (< ffmpeg 5.1)

  • Property mode set to 100644
File size: 19.6 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#include <libswresample/swresample.h>
28#include <libavutil/opt.h>
29
30// determine whether we use libavformat from ffmpeg or from libav
31#define FFMPEG_LIBAVFORMAT (LIBAVFORMAT_VERSION_MICRO > 99 )
32// max_analyze_duration2 was used from ffmpeg libavformat 55.43.100 -> 57.2.100
33#define FFMPEG_LIBAVFORMAT_MAX_DUR2 FFMPEG_LIBAVFORMAT && ( \
34      (LIBAVFORMAT_VERSION_MAJOR == 55 && LIBAVFORMAT_VERSION_MINOR >= 43) \
35      || (LIBAVFORMAT_VERSION_MAJOR == 56) \
36      || (LIBAVFORMAT_VERSION_MAJOR == 57 && LIBAVFORMAT_VERSION_MINOR < 2) \
37      )
38
39// backward compatibility with libavcodec55
40#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(57,0,0)
41#define HAVE_AUBIO_LIBAVCODEC_DEPRECATED 1
42#endif
43
44#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(58,3,102)
45#define HAVE_AUBIO_LIBAVCODEC_TIMEBASE_FIX 1
46#endif
47
48#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55,28,1)
49#warning "libavcodec < 56 is deprecated"
50#define av_frame_alloc  avcodec_alloc_frame
51#define av_frame_free avcodec_free_frame
52#define av_packet_unref av_free_packet
53#endif
54
55#if LIBAVUTIL_VERSION_INT < AV_VERSION_INT(57,28,100)
56//#warning "libavutil < 57.28.100 is deprecated"
57#else
58#define LIBAVUTIL_HAS_CH_LAYOUT
59#endif
60
61#include "aubio_priv.h"
62#include "fvec.h"
63#include "fmat.h"
64#include "ioutils.h"
65#include "source_avcodec.h"
66
67#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(56, 56, 0)
68#define AUBIO_AVCODEC_MAX_BUFFER_SIZE FF_MIN_BUFFER_SIZE
69#else
70#define AUBIO_AVCODEC_MAX_BUFFER_SIZE AV_INPUT_BUFFER_MIN_SIZE
71#endif
72
73#if LIBAVCODEC_VERSION_MAJOR >= 59
74#define FF_API_LAVF_AVCTX 1
75#endif
76
77struct _aubio_source_avcodec_t {
78  uint_t hop_size;
79  uint_t samplerate;
80  uint_t channels;
81
82  // some data about the file
83  char_t *path;
84  uint_t input_samplerate;
85  uint_t input_channels;
86
87  // avcodec stuff
88  AVFormatContext *avFormatCtx;
89  AVCodecContext *avCodecCtx;
90  AVFrame *avFrame;
91#if FF_API_INIT_PACKET
92  AVPacket *avPacket;
93#else
94  AVPacket avPacket;
95#endif
96  SwrContext *avr;
97  smpl_t *output;
98  uint_t read_samples;
99  uint_t read_index;
100  sint_t selected_stream;
101  uint_t eof;
102};
103
104// create or re-create the context when _do or _do_multi is called
105void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s);
106// actually read a frame
107void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s,
108    uint_t * read_samples);
109
110uint_t aubio_source_avcodec_has_network_url(aubio_source_avcodec_t *s);
111
112uint_t aubio_source_avcodec_has_network_url(aubio_source_avcodec_t *s) {
113  char proto[20], authorization[256], hostname[128], uripath[256];
114  int proto_size = 20, authorization_size = 256, hostname_size = 128,
115      *port_ptr = 0, path_size = 256;
116  av_url_split(proto, proto_size, authorization, authorization_size, hostname,
117      hostname_size, port_ptr, uripath, path_size, s->path);
118  if (strlen(proto)) {
119    return 1;
120  }
121  return 0;
122}
123
124
125aubio_source_avcodec_t * new_aubio_source_avcodec(const char_t * path,
126    uint_t samplerate, uint_t hop_size) {
127  aubio_source_avcodec_t * s = AUBIO_NEW(aubio_source_avcodec_t);
128  AVFormatContext *avFormatCtx = NULL;
129  AVCodecContext *avCodecCtx = NULL;
130  AVFrame *avFrame = NULL;
131#if FF_API_INIT_PACKET
132  AVPacket *avPacket = NULL;
133#endif
134  sint_t selected_stream = -1;
135#if FF_API_LAVF_AVCTX
136  AVCodecParameters *codecpar;
137#endif
138
139  const AVCodec *codec;
140  uint_t i;
141  int err;
142  if (path == NULL) {
143    AUBIO_ERR("source_avcodec: Aborted opening null path\n");
144    goto beach;
145  }
146  if ((sint_t)samplerate < 0) {
147    AUBIO_ERR("source_avcodec: Can not open %s with samplerate %d\n",
148        path, samplerate);
149    goto beach;
150  }
151  if ((sint_t)hop_size <= 0) {
152    AUBIO_ERR("source_avcodec: Can not open %s with hop_size %d\n",
153        path, hop_size);
154    goto beach;
155  }
156
157  s->hop_size = hop_size;
158  s->channels = 1;
159
160  s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);
161  strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);
162
163#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(58,0,0)
164  // register all formats and codecs
165  av_register_all();
166#endif
167
168  if (aubio_source_avcodec_has_network_url(s)) {
169    avformat_network_init();
170  }
171
172  // try opening the file and get some info about it
173  avFormatCtx = NULL;
174  if ( (err = avformat_open_input(&avFormatCtx, s->path, NULL, NULL) ) < 0 ) {
175    char errorstr[256];
176    av_strerror (err, errorstr, sizeof(errorstr));
177    AUBIO_ERR("source_avcodec: Failed opening %s (%s)\n", s->path, errorstr);
178    goto beach;
179  }
180
181  // try to make sure max_analyze_duration is big enough for most songs
182#if FFMPEG_LIBAVFORMAT_MAX_DUR2
183  avFormatCtx->max_analyze_duration2 *= 100;
184#else
185  avFormatCtx->max_analyze_duration *= 100;
186#endif
187
188  // retrieve stream information
189  if ( (err = avformat_find_stream_info(avFormatCtx, NULL)) < 0 ) {
190    char errorstr[256];
191    av_strerror (err, errorstr, sizeof(errorstr));
192    AUBIO_ERR("source_avcodec: Could not find stream information "
193        "for %s (%s)\n", s->path, errorstr);
194    goto beach;
195  }
196
197  // dump information about file onto standard error
198  //av_dump_format(avFormatCtx, 0, s->path, 0);
199
200  // look for the first audio stream
201  for (i = 0; i < avFormatCtx->nb_streams; i++) {
202#if FF_API_LAVF_AVCTX
203    if (avFormatCtx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
204#else
205    if (avFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
206#endif
207      if (selected_stream == -1) {
208        selected_stream = i;
209      } else {
210        AUBIO_WRN("source_avcodec: More than one audio stream in %s, "
211            "taking the first one\n", s->path);
212      }
213    }
214  }
215  if (selected_stream == -1) {
216    AUBIO_ERR("source_avcodec: No audio stream in %s\n", s->path);
217    goto beach;
218  }
219  //AUBIO_DBG("Taking stream %d in file %s\n", selected_stream, s->path);
220  s->selected_stream = selected_stream;
221
222#if FF_API_LAVF_AVCTX
223  codecpar = avFormatCtx->streams[selected_stream]->codecpar;
224  if (codecpar == NULL) {
225    AUBIO_ERR("source_avcodec: Could not find decoder for %s", s->path);
226    goto beach;
227  }
228  codec = avcodec_find_decoder(codecpar->codec_id);
229
230  /* Allocate a codec context for the decoder */
231  avCodecCtx = avcodec_alloc_context3(codec);
232  if (!avCodecCtx) {
233    AUBIO_ERR("source_avcodec: Failed to allocate the %s codec context "
234        "for path %s\n", av_get_media_type_string(AVMEDIA_TYPE_AUDIO),
235        s->path);
236    goto beach;
237  }
238#else
239  avCodecCtx = avFormatCtx->streams[selected_stream]->codec;
240  codec = avcodec_find_decoder(avCodecCtx->codec_id);
241#endif
242  if (codec == NULL) {
243    AUBIO_ERR("source_avcodec: Could not find decoder for %s", s->path);
244    goto beach;
245  }
246
247#if FF_API_LAVF_AVCTX
248  /* Copy codec parameters from input stream to output codec context */
249  if ((err = avcodec_parameters_to_context(avCodecCtx, codecpar)) < 0) {
250    AUBIO_ERR("source_avcodec: Failed to copy %s codec parameters to "
251        "decoder context for %s\n",
252        av_get_media_type_string(AVMEDIA_TYPE_AUDIO), s->path);
253    goto beach;
254  }
255#if HAVE_AUBIO_LIBAVCODEC_TIMEBASE_FIX
256  // avoids 'skipped frames warning' with avecodec < 58, deprecated after
257  av_codec_set_pkt_timebase(avCodecCtx,
258      avFormatCtx->streams[selected_stream]->time_base);
259#endif
260#endif
261
262  if ( ( err = avcodec_open2(avCodecCtx, codec, NULL) ) < 0) {
263    char errorstr[256];
264    av_strerror (err, errorstr, sizeof(errorstr));
265    AUBIO_ERR("source_avcodec: Could not load codec for %s (%s)\n", s->path,
266        errorstr);
267    goto beach;
268  }
269
270  /* get input specs */
271  s->input_samplerate = avCodecCtx->sample_rate;
272#ifdef LIBAVUTIL_HAS_CH_LAYOUT
273  s->input_channels   = avCodecCtx->ch_layout.nb_channels;
274#else
275  s->input_channels   = avCodecCtx->channels;
276#endif
277  //AUBIO_DBG("input_samplerate: %d\n", s->input_samplerate);
278  //AUBIO_DBG("input_channels: %d\n", s->input_channels);
279
280  if (samplerate == 0) {
281    s->samplerate = s->input_samplerate;
282  } else {
283    s->samplerate = samplerate;
284  }
285
286  if (s->samplerate >  s->input_samplerate) {
287    AUBIO_WRN("source_avcodec: upsampling %s from %d to %d\n", s->path,
288        s->input_samplerate, s->samplerate);
289  }
290
291  avFrame = av_frame_alloc();
292  if (!avFrame) {
293    AUBIO_ERR("source_avcodec: Could not allocate frame for (%s)\n", s->path);
294    goto beach;
295  }
296
297#if FF_API_INIT_PACKET
298  avPacket = av_packet_alloc();
299  if (!avPacket) {
300    AUBIO_ERR("source_avcodec: Could not allocate packet for (%s)\n", s->path);
301    goto beach;
302  }
303#endif
304
305  /* allocate output for avr */
306  s->output = (smpl_t *)av_malloc(AUBIO_AVCODEC_MAX_BUFFER_SIZE
307      * sizeof(smpl_t));
308
309  s->read_samples = 0;
310  s->read_index = 0;
311
312  s->avFormatCtx = avFormatCtx;
313  s->avCodecCtx = avCodecCtx;
314  s->avFrame = avFrame;
315#if FF_API_INIT_PACKET
316  s->avPacket = avPacket;
317#endif
318
319  aubio_source_avcodec_reset_resampler(s);
320
321  if (s->avr == NULL) goto beach;
322
323  s->eof = 0;
324
325  //av_log_set_level(AV_LOG_QUIET);
326
327  return s;
328
329beach:
330  //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
331  //    s->path, s->samplerate, s->hop_size);
332  del_aubio_source_avcodec(s);
333  return NULL;
334}
335
336void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s)
337{
338  // create or reset resampler to/from mono/multi-channel
339  if ( s->avr == NULL ) {
340    int err;
341    SwrContext *avr = swr_alloc();
342#ifdef LIBAVUTIL_HAS_CH_LAYOUT
343    AVChannelLayout input_layout;
344    AVChannelLayout output_layout;
345    av_channel_layout_default(&input_layout, s->input_channels);
346    av_channel_layout_default(&output_layout, s->input_channels);
347
348    av_opt_set_chlayout(avr, "in_channel_layout",  &input_layout,        0);
349    av_opt_set_chlayout(avr, "out_channel_layout", &output_layout,       0);
350#else
351    int64_t input_layout = av_get_default_channel_layout(s->input_channels);
352    int64_t output_layout = av_get_default_channel_layout(s->input_channels);
353
354    av_opt_set_int(avr, "in_channel_layout",  input_layout,              0);
355    av_opt_set_int(avr, "out_channel_layout", output_layout,             0);
356#endif
357    av_opt_set_int(avr, "in_sample_rate",     s->input_samplerate,       0);
358    av_opt_set_int(avr, "out_sample_rate",    s->samplerate,             0);
359    av_opt_set_int(avr, "in_sample_fmt",      s->avCodecCtx->sample_fmt, 0);
360#if HAVE_AUBIO_DOUBLE
361    av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_DBL,         0);
362#else
363    av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLT,         0);
364#endif
365    // TODO: use planar?
366    //av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLTP,      0);
367    if ( ( err = swr_init(avr) ) < 0)
368    {
369      char errorstr[256];
370      av_strerror (err, errorstr, sizeof(errorstr));
371      AUBIO_ERR("source_avcodec: Could not open resampling context"
372         " for %s (%s)\n", s->path, errorstr);
373      return;
374    }
375    s->avr = avr;
376  }
377}
378
379void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s,
380    uint_t * read_samples)
381{
382  AVFormatContext *avFormatCtx = s->avFormatCtx;
383  AVCodecContext *avCodecCtx = s->avCodecCtx;
384  AVFrame *avFrame = s->avFrame;
385#if FF_API_INIT_PACKET
386  AVPacket *avPacket = s->avPacket;
387#else
388  AVPacket *avPacket = &s->avPacket;
389#endif
390  SwrContext *avr = s->avr;
391  int got_frame = 0;
392  int in_samples = avFrame->nb_samples;
393#ifdef LIBAVUTIL_HAS_CH_LAYOUT
394  int max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE / avCodecCtx->ch_layout.nb_channels;
395#else
396  int max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE / avCodecCtx->channels;
397#endif
398  int out_samples = 0;
399  smpl_t *output = s->output;
400#ifndef FF_API_LAVF_AVCTX
401  int len = 0;
402#else
403  int ret = 0;
404#endif
405#ifndef FF_API_INIT_PACKET
406  av_init_packet (avPacket);
407#endif
408  *read_samples = 0;
409
410  do
411  {
412    int err = av_read_frame (avFormatCtx, avPacket);
413    if (err == AVERROR_EOF) {
414      s->eof = 1;
415      goto beach;
416    }
417    if (err != 0) {
418      char errorstr[256];
419      av_strerror (err, errorstr, sizeof(errorstr));
420      AUBIO_ERR("source_avcodec: could not read frame in %s (%s)\n",
421          s->path, errorstr);
422      s->eof = 1;
423      goto beach;
424    }
425  } while (avPacket->stream_index != s->selected_stream);
426
427#if FF_API_LAVF_AVCTX
428  ret = avcodec_send_packet(avCodecCtx, avPacket);
429  if (ret < 0 && ret != AVERROR_EOF) {
430    AUBIO_ERR("source_avcodec: error when sending packet for %s\n", s->path);
431    goto beach;
432  }
433  ret = avcodec_receive_frame(avCodecCtx, avFrame);
434  if (ret >= 0) {
435    got_frame = 1;
436  }
437  if (ret < 0) {
438    if (ret == AVERROR(EAGAIN)) {
439      //AUBIO_WRN("source_avcodec: output is not available right now - "
440      //    "user must try to send new input\n");
441      goto beach;
442    } else if (ret == AVERROR_EOF) {
443      AUBIO_WRN("source_avcodec: the decoder has been fully flushed, "
444          "and there will be no more output frames\n");
445    } else {
446      AUBIO_ERR("source_avcodec: decoding errors on %s\n", s->path);
447      goto beach;
448    }
449  }
450#else
451  len = avcodec_decode_audio4(avCodecCtx, avFrame, &got_frame, avPacket);
452
453  if (len < 0) {
454    AUBIO_ERR("source_avcodec: error while decoding %s\n", s->path);
455    goto beach;
456  }
457#endif
458  if (got_frame == 0) {
459    AUBIO_WRN("source_avcodec: did not get a frame when reading %s\n",
460        s->path);
461    goto beach;
462  }
463
464#if LIBAVUTIL_VERSION_MAJOR > 52
465#ifdef LIBAVUTIL_HAS_CH_LAYOUT
466  int frame_channels = avFrame->ch_layout.nb_channels;
467#else
468  int frame_channels = avFrame->channels;
469#endif
470  if (frame_channels != (sint_t)s->input_channels) {
471    AUBIO_WRN ("source_avcodec: trying to read from %d channel(s),"
472        "but configured for %d; is '%s' corrupt?\n",
473        frame_channels, s->input_channels, s->path);
474    goto beach;
475  }
476#else
477#warning "avutil < 53 is deprecated, crashes might occur on corrupt files"
478#endif
479
480  in_samples = avFrame->nb_samples;
481  max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE;
482  if (frame_channels > 0) max_out_samples /= frame_channels;
483  out_samples = swr_convert( avr,
484      (uint8_t **)&output, max_out_samples,
485      (const uint8_t **)avFrame->data, in_samples);
486  if (out_samples < 0) {
487    AUBIO_WRN("source_avcodec: error while resampling %s (%d)\n",
488        s->path, out_samples);
489    goto beach;
490  }
491
492  *read_samples = out_samples;
493
494beach:
495  av_packet_unref(avPacket);
496}
497
498void aubio_source_avcodec_do(aubio_source_avcodec_t * s, fvec_t * read_data,
499    uint_t * read) {
500  uint_t i, j;
501  uint_t end = 0;
502  uint_t total_wrote = 0;
503  uint_t length = aubio_source_validate_input_length("source_avcodec", s->path,
504      s->hop_size, read_data->length);
505  if (!s->avr || !s->avFormatCtx || !s->avCodecCtx) {
506    AUBIO_ERR("source_avcodec: could not read from %s (file was closed)\n",
507        s->path);
508    *read= 0;
509    return;
510  }
511  while (total_wrote < length) {
512    end = MIN(s->read_samples - s->read_index, length - total_wrote);
513    for (i = 0; i < end; i++) {
514      read_data->data[i + total_wrote] = 0.;
515      for (j = 0; j < s->input_channels; j++) {
516        read_data->data[i + total_wrote] +=
517          s->output[(i + s->read_index) * s->input_channels + j];
518      }
519      read_data->data[i + total_wrote] *= 1./s->input_channels;
520    }
521    total_wrote += end;
522    if (total_wrote < length) {
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
535  aubio_source_pad_output(read_data, total_wrote);
536
537  *read = total_wrote;
538}
539
540void aubio_source_avcodec_do_multi(aubio_source_avcodec_t * s,
541    fmat_t * read_data, uint_t * read) {
542  uint_t i,j;
543  uint_t end = 0;
544  uint_t total_wrote = 0;
545  uint_t length = aubio_source_validate_input_length("source_avcodec", s->path,
546      s->hop_size, read_data->length);
547  uint_t channels = aubio_source_validate_input_channels("source_avcodec",
548      s->path, s->input_channels, read_data->height);
549  if (!s->avr || !s->avFormatCtx || !s->avCodecCtx) {
550    AUBIO_ERR("source_avcodec: could not read from %s (file was closed)\n",
551        s->path);
552    *read= 0;
553    return;
554  }
555  while (total_wrote < length) {
556    end = MIN(s->read_samples - s->read_index, length - total_wrote);
557    for (j = 0; j < channels; j++) {
558      for (i = 0; i < end; i++) {
559        read_data->data[j][i + total_wrote] =
560          s->output[(i + s->read_index) * s->input_channels + j];
561      }
562    }
563    total_wrote += end;
564    if (total_wrote < length) {
565      uint_t avcodec_read = 0;
566      aubio_source_avcodec_readframe(s, &avcodec_read);
567      s->read_samples = avcodec_read;
568      s->read_index = 0;
569      if (s->eof) {
570        break;
571      }
572    } else {
573      s->read_index += end;
574    }
575  }
576
577  aubio_source_pad_multi_output(read_data, s->input_channels, total_wrote);
578
579  *read = total_wrote;
580}
581
582uint_t aubio_source_avcodec_get_samplerate(const aubio_source_avcodec_t * s) {
583  return s->samplerate;
584}
585
586uint_t aubio_source_avcodec_get_channels(const aubio_source_avcodec_t * s) {
587  return s->input_channels;
588}
589
590uint_t aubio_source_avcodec_seek (aubio_source_avcodec_t * s, uint_t pos) {
591  int64_t resampled_pos =
592    (uint_t)ROUND(pos * (s->input_samplerate * 1. / s->samplerate));
593  int64_t min_ts = MAX(resampled_pos - 2000, 0);
594  int64_t max_ts = MIN(resampled_pos + 2000, INT64_MAX);
595  int seek_flags = AVSEEK_FLAG_FRAME | AVSEEK_FLAG_ANY;
596  int ret = AUBIO_FAIL;
597  if (s->avFormatCtx != NULL && s->avr != NULL) {
598    ret = AUBIO_OK;
599  } else {
600    AUBIO_ERR("source_avcodec: failed seeking in %s (file not opened?)",
601        s->path);
602    return ret;
603  }
604  if ((sint_t)pos < 0) {
605    AUBIO_ERR("source_avcodec: could not seek %s at %d (seeking position"
606       " should be >= 0)\n", s->path, pos);
607    return AUBIO_FAIL;
608  }
609  ret = avformat_seek_file(s->avFormatCtx, s->selected_stream,
610      min_ts, resampled_pos, max_ts, seek_flags);
611  if (ret < 0) {
612    AUBIO_ERR("source_avcodec: failed seeking to %d in file %s",
613        pos, s->path);
614  }
615  // reset read status
616  s->eof = 0;
617  s->read_index = 0;
618  s->read_samples = 0;
619  swr_close(s->avr);
620  swr_init(s->avr);
621  return ret;
622}
623
624uint_t aubio_source_avcodec_get_duration (aubio_source_avcodec_t * s) {
625  if (s && &(s->avFormatCtx) != NULL) {
626    int64_t duration = s->avFormatCtx->duration;
627    return s->samplerate * ((uint_t)duration / 1e6 );
628  }
629  return 0;
630}
631
632uint_t aubio_source_avcodec_close(aubio_source_avcodec_t * s) {
633  if (s->avr != NULL) {
634    swr_close ( s->avr );
635    swr_free ( &s->avr );
636  }
637  s->avr = NULL;
638  if (s->avCodecCtx != NULL) {
639#ifndef HAVE_AUBIO_LIBAVCODEC_DEPRECATED
640    avcodec_free_context( &s->avCodecCtx );
641#else
642    avcodec_close ( s->avCodecCtx );
643#endif
644  }
645  s->avCodecCtx = NULL;
646  if (s->avFormatCtx != NULL) {
647    avformat_close_input(&s->avFormatCtx);
648    s->avFormatCtx = NULL;
649  }
650#if FF_API_INIT_PACKET
651  if (s->avPacket) {
652    av_packet_unref(s->avPacket);
653  }
654#else
655  av_packet_unref(&s->avPacket);
656#endif
657  return AUBIO_OK;
658}
659
660void del_aubio_source_avcodec(aubio_source_avcodec_t * s){
661  AUBIO_ASSERT(s);
662  aubio_source_avcodec_close(s);
663  if (s->output != NULL) {
664    av_free(s->output);
665  }
666  s->output = NULL;
667  if (s->avFrame != NULL) {
668    av_frame_free( &(s->avFrame) );
669  }
670  s->avFrame = NULL;
671#if FF_API_INIT_PACKET
672  if (s->avPacket != NULL) {
673    av_packet_free( &(s->avPacket) );
674  }
675  s->avPacket = NULL;
676#endif
677  if (s->path) {
678    AUBIO_FREE(s->path);
679  }
680  s->path = NULL;
681  AUBIO_FREE(s);
682}
683
684#endif /* HAVE_LIBAV */
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