source: src/io/source_avcodec.c @ 2a32644

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchpitchshiftsamplertimestretchyinfft+
Last change on this file since 2a32644 was 2a32644, checked in by Paul Brossier <piem@piem.org>, 5 years ago

src/io/source_avcodec.c: avoid deprecation warning, detect if we use ffmpeg or libav version

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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
22#include "config.h"
23
24#ifdef HAVE_LIBAV
25
26// determine whether we use libavformat from ffmpe or libav
27#define FFMPEG_LIBAVFORMAT (LIBAVFORMAT_VERSION_MICRO > 99)
28
29#include <libavcodec/avcodec.h>
30#include <libavformat/avformat.h>
31#include <libavresample/avresample.h>
32#include <libavutil/opt.h>
33#include <stdlib.h>
34
35#include "aubio_priv.h"
36#include "fvec.h"
37#include "fmat.h"
38#include "source_avcodec.h"
39
40#define AUBIO_AVCODEC_MAX_BUFFER_SIZE FF_MIN_BUFFER_SIZE
41
42struct _aubio_source_avcodec_t {
43  uint_t hop_size;
44  uint_t samplerate;
45  uint_t channels;
46
47  // some data about the file
48  char_t *path;
49  uint_t input_samplerate;
50  uint_t input_channels;
51
52  // avcodec stuff
53  AVFormatContext *avFormatCtx;
54  AVCodecContext *avCodecCtx;
55  AVFrame *avFrame;
56  AVAudioResampleContext *avr;
57  float *output;
58  uint_t read_samples;
59  uint_t read_index;
60  sint_t selected_stream;
61  uint_t eof;
62  uint_t multi;
63};
64
65// hack to create or re-create the context the first time _do or _do_multi is called
66void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s, uint_t multi);
67void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s, uint_t * read_samples);
68
69aubio_source_avcodec_t * new_aubio_source_avcodec(char_t * path, uint_t samplerate, uint_t hop_size) {
70  aubio_source_avcodec_t * s = AUBIO_NEW(aubio_source_avcodec_t);
71  int err;
72  if (path == NULL) {
73    AUBIO_ERR("source_avcodec: Aborted opening null path\n");
74    goto beach;
75  }
76  if ((sint_t)samplerate < 0) {
77    AUBIO_ERR("source_avcodec: Can not open %s with samplerate %d\n", path, samplerate);
78    goto beach;
79  }
80  if ((sint_t)hop_size <= 0) {
81    AUBIO_ERR("source_avcodec: Can not open %s with hop_size %d\n", path, hop_size);
82    goto beach;
83  }
84
85  s->hop_size = hop_size;
86  s->channels = 1;
87  s->path = path;
88
89  // register all formats and codecs
90  av_register_all();
91
92  // if path[0] != '/'
93  //avformat_network_init();
94
95  // try opening the file and get some info about it
96  AVFormatContext *avFormatCtx = s->avFormatCtx;
97  avFormatCtx = NULL;
98  if ( (err = avformat_open_input(&avFormatCtx, s->path, NULL, NULL) ) < 0 ) {
99    char errorstr[256];
100    av_strerror (err, errorstr, sizeof(errorstr));
101    AUBIO_ERR("source_avcodec: Failed opening %s (%s)\n", s->path, errorstr);
102    goto beach;
103  }
104
105  // try to make sure max_analyze_duration is big enough for most songs
106#if FFMPEG_LIBAVFORMAT
107  avFormatCtx->max_analyze_duration2 *= 100;
108#else
109  avFormatCtx->max_analyze_duration *= 100;
110#endif
111
112  // retrieve stream information
113  if ( (err = avformat_find_stream_info(avFormatCtx, NULL)) < 0 ) {
114    char errorstr[256];
115    av_strerror (err, errorstr, sizeof(errorstr));
116    AUBIO_ERR("source_avcodec: Could not find stream information " "for %s (%s)\n", s->path,
117        errorstr);
118    goto beach;
119  }
120
121  // dump information about file onto standard error
122  //av_dump_format(avFormatCtx, 0, s->path, 0);
123
124  // look for the first audio stream
125  uint_t i;
126  sint_t selected_stream = -1;
127  for (i = 0; i < avFormatCtx->nb_streams; i++) {
128    if (avFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
129      if (selected_stream == -1) {
130        selected_stream = i;
131      } else {
132        AUBIO_WRN("source_avcodec: More than one audio stream in %s, "
133            "taking the first one\n", s->path);
134      }
135    }
136  }
137  if (selected_stream == -1) {
138    AUBIO_ERR("source_avcodec: No audio stream in %s\n", s->path);
139    goto beach;
140  }
141  //AUBIO_DBG("Taking stream %d in file %s\n", selected_stream, s->path);
142  s->selected_stream = selected_stream;
143
144  AVCodecContext *avCodecCtx = s->avCodecCtx;
145  avCodecCtx = avFormatCtx->streams[selected_stream]->codec;
146  AVCodec *codec = avcodec_find_decoder(avCodecCtx->codec_id);
147  if (codec == NULL) {
148    AUBIO_ERR("source_avcodec: Could not find decoder for %s", s->path);
149    goto beach;
150  }
151
152  if ( ( err = avcodec_open2(avCodecCtx, codec, NULL) ) < 0) {
153    char errorstr[256];
154    av_strerror (err, errorstr, sizeof(errorstr));
155    AUBIO_ERR("source_avcodec: Could not load codec for %s (%s)\n", s->path, errorstr);
156    goto beach;
157  }
158
159  /* get input specs */
160  s->input_samplerate = avCodecCtx->sample_rate;
161  s->input_channels   = avCodecCtx->channels;
162  //AUBIO_DBG("input_samplerate: %d\n", s->input_samplerate);
163  //AUBIO_DBG("input_channels: %d\n", s->input_channels);
164
165  if (samplerate == 0) {
166    samplerate = s->input_samplerate;
167    //AUBIO_DBG("sampling rate set to 0, automagically adjusting to %d\n", samplerate);
168  }
169  s->samplerate = samplerate;
170
171  if (s->samplerate >  s->input_samplerate) {
172    AUBIO_WRN("source_avcodec: upsampling %s from %d to %d\n", s->path,
173        s->input_samplerate, s->samplerate);
174  }
175
176  AVFrame *avFrame = s->avFrame;
177  avFrame = av_frame_alloc();
178  if (!avFrame) {
179    AUBIO_ERR("source_avcodec: Could not allocate frame for (%s)\n", s->path);
180  }
181
182  /* allocate output for avr */
183  s->output = (float *)av_malloc(AUBIO_AVCODEC_MAX_BUFFER_SIZE * sizeof(float));
184
185  s->read_samples = 0;
186  s->read_index = 0;
187
188  s->avFormatCtx = avFormatCtx;
189  s->avCodecCtx = avCodecCtx;
190  s->avFrame = avFrame;
191
192  // default to mono output
193  aubio_source_avcodec_reset_resampler(s, 0);
194
195  s->eof = 0;
196  s->multi = 0;
197
198  //av_log_set_level(AV_LOG_QUIET);
199
200  return s;
201
202beach:
203  //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
204  //    s->path, s->samplerate, s->hop_size);
205  del_aubio_source_avcodec(s);
206  return NULL;
207}
208
209void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s, uint_t multi) {
210  if ( (multi != s->multi) || (s->avr == NULL) ) {
211    int64_t input_layout = av_get_default_channel_layout(s->input_channels);
212    uint_t output_channels = multi ? s->input_channels : 1;
213    int64_t output_layout = av_get_default_channel_layout(output_channels);
214    if (s->avr != NULL) {
215      avresample_close( s->avr );
216      av_free ( s->avr );
217      s->avr = NULL;
218    }
219    AVAudioResampleContext *avr = s->avr;
220    avr = avresample_alloc_context();
221
222    av_opt_set_int(avr, "in_channel_layout",  input_layout,           0);
223    av_opt_set_int(avr, "out_channel_layout", output_layout,          0);
224    av_opt_set_int(avr, "in_sample_rate",     s->input_samplerate,    0);
225    av_opt_set_int(avr, "out_sample_rate",    s->samplerate,          0);
226    av_opt_set_int(avr, "in_sample_fmt",      s->avCodecCtx->sample_fmt, 0);
227    av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLT,      0);
228    int err;
229    if ( ( err = avresample_open(avr) ) < 0) {
230      char errorstr[256];
231      av_strerror (err, errorstr, sizeof(errorstr));
232      AUBIO_ERR("source_avcodec: Could not open AVAudioResampleContext for %s (%s)\n",
233          s->path, errorstr);
234      //goto beach;
235      return;
236    }
237    s->avr = avr;
238    s->multi = multi;
239  }
240}
241
242void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s, uint_t * read_samples) {
243  AVFormatContext *avFormatCtx = s->avFormatCtx;
244  AVCodecContext *avCodecCtx = s->avCodecCtx;
245  AVFrame *avFrame = s->avFrame;
246  AVPacket avPacket;
247  av_init_packet (&avPacket);
248  AVAudioResampleContext *avr = s->avr;
249  float *output = s->output;
250  *read_samples = 0;
251
252  do
253  {
254    int err = av_read_frame (avFormatCtx, &avPacket);
255    if (err == AVERROR_EOF) {
256      s->eof = 1;
257      goto beach;
258    }
259    if (err != 0) {
260      char errorstr[256];
261      av_strerror (err, errorstr, sizeof(errorstr));
262      AUBIO_ERR("Could not read frame in %s (%s)\n", s->path, errorstr);
263      goto beach;
264    }
265  } while (avPacket.stream_index != s->selected_stream);
266
267  int got_frame = 0;
268  int len = avcodec_decode_audio4(avCodecCtx, avFrame, &got_frame, &avPacket);
269
270  if (len < 0) {
271    AUBIO_ERR("Error while decoding %s\n", s->path);
272    goto beach;
273  }
274  if (got_frame == 0) {
275    //AUBIO_ERR("Could not get frame for (%s)\n", s->path);
276    goto beach;
277  }
278
279  int in_linesize = 0;
280  av_samples_get_buffer_size(&in_linesize, avCodecCtx->channels,
281      avFrame->nb_samples, avCodecCtx->sample_fmt, 1);
282  int in_samples = avFrame->nb_samples;
283  int out_linesize = 0;
284  int max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE;
285  int out_samples = avresample_convert ( avr,
286        (uint8_t **)&output, out_linesize, max_out_samples,
287        (uint8_t **)avFrame->data, in_linesize, in_samples);
288  if (out_samples <= 0) {
289    //AUBIO_ERR("No sample found while converting frame (%s)\n", s->path);
290    goto beach;
291  }
292
293  *read_samples = out_samples;
294
295beach:
296  s->avFormatCtx = avFormatCtx;
297  s->avCodecCtx = avCodecCtx;
298  s->avFrame = avFrame;
299  s->avr = avr;
300  s->output = output;
301
302  av_free_packet(&avPacket);
303}
304
305void aubio_source_avcodec_do(aubio_source_avcodec_t * s, fvec_t * read_data, uint_t * read){
306  if (s->multi == 1) aubio_source_avcodec_reset_resampler(s, 0);
307  uint_t i;
308  uint_t end = 0;
309  uint_t total_wrote = 0;
310  while (total_wrote < s->hop_size) {
311    end = MIN(s->read_samples - s->read_index, s->hop_size - total_wrote);
312    for (i = 0; i < end; i++) {
313      read_data->data[i + total_wrote] = s->output[i + s->read_index];
314    }
315    total_wrote += end;
316    if (total_wrote < s->hop_size) {
317      uint_t avcodec_read = 0;
318      aubio_source_avcodec_readframe(s, &avcodec_read);
319      s->read_samples = avcodec_read;
320      s->read_index = 0;
321      if (s->eof) {
322        break;
323      }
324    } else {
325      s->read_index += end;
326    }
327  }
328  if (total_wrote < s->hop_size) {
329    for (i = end; i < s->hop_size; i++) {
330      read_data->data[i] = 0.;
331    }
332  }
333  *read = total_wrote;
334}
335
336void aubio_source_avcodec_do_multi(aubio_source_avcodec_t * s, fmat_t * read_data, uint_t * read){
337  if (s->multi == 0) aubio_source_avcodec_reset_resampler(s, 1);
338  uint_t i,j;
339  uint_t end = 0;
340  uint_t total_wrote = 0;
341  while (total_wrote < s->hop_size) {
342    end = MIN(s->read_samples - s->read_index, s->hop_size - total_wrote);
343    for (j = 0; j < read_data->height; j++) {
344      for (i = 0; i < end; i++) {
345        read_data->data[j][i + total_wrote] =
346          s->output[(i + s->read_index) * s->input_channels + j];
347      }
348    }
349    total_wrote += end;
350    if (total_wrote < s->hop_size) {
351      uint_t avcodec_read = 0;
352      aubio_source_avcodec_readframe(s, &avcodec_read);
353      s->read_samples = avcodec_read;
354      s->read_index = 0;
355      if (s->eof) {
356        break;
357      }
358    } else {
359      s->read_index += end;
360    }
361  }
362  if (total_wrote < s->hop_size) {
363    for (j = 0; j < read_data->height; j++) {
364      for (i = end; i < s->hop_size; i++) {
365        read_data->data[j][i] = 0.;
366      }
367    }
368  }
369  *read = total_wrote;
370}
371
372uint_t aubio_source_avcodec_get_samplerate(aubio_source_avcodec_t * s) {
373  return s->samplerate;
374}
375
376uint_t aubio_source_avcodec_get_channels(aubio_source_avcodec_t * s) {
377  return s->input_channels;
378}
379
380uint_t aubio_source_avcodec_seek (aubio_source_avcodec_t * s, uint_t pos) {
381  int64_t resampled_pos = (uint_t)ROUND(pos * (s->input_samplerate * 1. / s->samplerate));
382  int64_t min_ts = MAX(resampled_pos - 2000, 0);
383  int64_t max_ts = MIN(resampled_pos + 2000, INT64_MAX);
384  int seek_flags = AVSEEK_FLAG_FRAME | AVSEEK_FLAG_ANY;
385  int ret = avformat_seek_file(s->avFormatCtx, s->selected_stream,
386      min_ts, resampled_pos, max_ts, seek_flags);
387  if (ret < 0) {
388    AUBIO_ERR("Failed seeking to %d in file %s", pos, s->path);
389  }
390  // reset read status
391  s->eof = 0;
392  s->read_index = 0;
393  s->read_samples = 0;
394  // reset the AVAudioResampleContext
395  avresample_close(s->avr);
396  avresample_open(s->avr);
397  return ret;
398}
399
400uint_t aubio_source_avcodec_close(aubio_source_avcodec_t * s) {
401  if (s->avr != NULL) {
402    avresample_close( s->avr );
403    av_free ( s->avr );
404  }
405  s->avr = NULL;
406  if (s->avCodecCtx != NULL) {
407    avcodec_close ( s->avCodecCtx );
408  }
409  s->avCodecCtx = NULL;
410  if (s->avFormatCtx != NULL) {
411    avformat_close_input ( &(s->avFormatCtx) );
412  }
413  s->avFormatCtx = NULL;
414  return AUBIO_OK;
415}
416
417void del_aubio_source_avcodec(aubio_source_avcodec_t * s){
418  if (!s) return;
419  aubio_source_avcodec_close(s);
420  if (s->output != NULL) {
421    av_free(s->output);
422  }
423  s->output = NULL;
424  if (s->avFrame != NULL) {
425    av_frame_free( &(s->avFrame) );
426  }
427  s->avFrame = NULL;
428  AUBIO_FREE(s);
429}
430
431#endif /* HAVE_LIBAV */
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