source: src/io/source_avcodec.c @ f3b93c6

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5pitchshiftsamplertimestretchyinfft+
Last change on this file since f3b93c6 was f3b93c6, checked in by Paul Brossier <piem@piem.org>, 11 years ago

src/io/source_avcodec.c: do not reuse AVPacket for now, avoiding memory leaks

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File size: 10.9 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
22#include "config.h"
23
24#ifdef HAVE_AVCODEC
25
26#include <sndfile.h>
27#include <libavcodec/avcodec.h>
28#include <libavformat/avformat.h>
29#include <libavresample/avresample.h>
30#include <libavutil/opt.h>
31#include <stdlib.h>
32
33#include "aubio_priv.h"
34#include "fvec.h"
35#include "fmat.h"
36#include "source_avcodec.h"
37
38#define AUBIO_AVCODEC_MIN_BUFFER_SIZE FF_MIN_BUFFER_SIZE
39
40#define SHORT_TO_FLOAT(x) (smpl_t)(x * 3.0517578125e-05)
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  int16_t *output;
58  uint_t read_samples;
59  uint_t read_index;
60};
61
62aubio_source_avcodec_t * new_aubio_source_avcodec(char_t * path, uint_t samplerate, uint_t hop_size) {
63  aubio_source_avcodec_t * s = AUBIO_NEW(aubio_source_avcodec_t);
64  int err;
65
66  if (path == NULL) {
67    AUBIO_ERR("Aborted opening null path\n");
68    return NULL;
69  }
70
71  s->hop_size = hop_size;
72  s->channels = 1;
73  s->path = path;
74
75  // register all formats and codecs
76  av_register_all();
77
78  // try opening the file and get some info about it
79  AVFormatContext *avFormatCtx = s->avFormatCtx;
80  avFormatCtx = NULL;
81  if ( (err = avformat_open_input(&avFormatCtx, s->path, NULL, NULL) ) < 0 ) {
82    uint8_t errorstr_len = 128;
83    char errorstr[errorstr_len];
84    if (av_strerror (err, errorstr, errorstr_len) == 0) {
85      AUBIO_ERR("Failed opening %s (%s)\n", s->path, errorstr);
86    } else {
87      AUBIO_ERR("Failed opening %s (unknown error)\n", s->path);
88    }
89    goto beach;
90  }
91
92  // try to make sure max_analyze_duration is big enough for most songs
93  avFormatCtx->max_analyze_duration *= 100;
94
95  // retrieve stream information
96  if ( (err = avformat_find_stream_info(avFormatCtx, NULL)) < 0 ) {
97    uint8_t errorstr_len = 128;
98    char errorstr[errorstr_len];
99    if (av_strerror (err, errorstr, errorstr_len) == 0) {
100      AUBIO_ERR("Could not find stream information for %s (%s)\n", s->path, errorstr);
101    } else {
102      AUBIO_ERR("Could not find stream information for %s (unknown error)\n", s->path);
103    }
104    goto beach;
105  }
106
107  // Dump information about file onto standard error
108  //av_dump_format(avFormatCtx, 0, s->path, 0);
109
110  // look for the first audio stream, printing a warning if more than one is found
111  uint_t i;
112  sint_t selected_stream = -1;
113  for (i = 0; i < avFormatCtx->nb_streams; i++) {
114    if (avFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
115      if (selected_stream == -1) {
116        selected_stream = i;
117      } else {
118        AUBIO_WRN("More than one audio stream in %s, taking the first one\n", s->path);
119      }
120    }
121  }
122  if (selected_stream == -1) {
123    AUBIO_ERR("No audio stream in %s\n", s->path);
124    goto beach;
125  }
126  //AUBIO_DBG("Taking stream %d in file %s\n", selected_stream, s->path);
127
128  AVCodecContext *avCodecCtx = s->avCodecCtx;
129  avCodecCtx = avFormatCtx->streams[selected_stream]->codec;
130  AVCodec *codec = avcodec_find_decoder(avCodecCtx->codec_id);
131  if (codec == NULL) {
132    AUBIO_ERR("Could not find decoder for %s", s->path);
133    goto beach;
134  }
135
136  if ( ( err = avcodec_open2(avCodecCtx, codec, NULL) ) < 0) {
137    uint8_t errorstr_len = 128;
138    char errorstr[errorstr_len];
139    if (av_strerror (err, errorstr, errorstr_len) == 0) {
140      AUBIO_ERR("Could not load codec for %s (%s)\n", s->path, errorstr);
141    } else {
142      AUBIO_ERR("Could not load codec for %s (unknown error)\n", s->path);
143    }
144    goto beach;
145  }
146
147  /* get input specs */
148  s->input_samplerate = avCodecCtx->sample_rate;
149  s->input_channels   = avCodecCtx->channels;
150  //AUBIO_DBG("input_samplerate: %d\n", s->input_samplerate);
151  //AUBIO_DBG("input_channels: %d\n", s->input_channels);
152
153  if (samplerate == 0) {
154    samplerate = s->input_samplerate;
155    //AUBIO_DBG("sampling rate set to 0, automagically adjusting to %d\n", samplerate);
156  }
157  s->samplerate = samplerate;
158
159  int64_t input_layout = av_get_default_channel_layout(s->input_channels);
160  int64_t mono_layout = av_get_default_channel_layout(1);
161
162  AVAudioResampleContext *avr = s->avr;
163  avr = avresample_alloc_context();
164  av_opt_set_int(avr, "in_channel_layout",  input_layout,           0);
165  av_opt_set_int(avr, "out_channel_layout", mono_layout,            0);
166  av_opt_set_int(avr, "in_sample_rate",     s->input_samplerate,    0);
167  av_opt_set_int(avr, "out_sample_rate",    s->samplerate,          0);
168  av_opt_set_int(avr, "in_sample_fmt",      avCodecCtx->sample_fmt, 0);
169  av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_S16,      0);
170  if ( ( err = avresample_open(avr) ) < 0) {
171    uint8_t errorstr_len = 128;
172    char errorstr[errorstr_len];
173    if (av_strerror (err, errorstr, errorstr_len) == 0) {
174      AUBIO_ERR("Could not open AVAudioResampleContext for %s (%s)\n", s->path, errorstr);
175    } else {
176      AUBIO_ERR("Could not open AVAudioResampleContext for %s (unknown error)\n", s->path);
177    }
178    goto beach;
179  }
180
181  AVFrame *avFrame = s->avFrame;
182  avFrame = avcodec_alloc_frame();
183  if (!avFrame) {
184    AUBIO_ERR("Could not allocate frame for (%s)\n", s->path);
185  }
186
187  /* allocate output for avr */
188  s->output = (int16_t *)av_malloc(AUBIO_AVCODEC_MIN_BUFFER_SIZE * sizeof(int16_t));
189
190  s->read_samples = 0;
191  s->read_index = 0;
192
193  s->avFormatCtx = avFormatCtx;
194  s->avCodecCtx = avCodecCtx;
195  s->avFrame = avFrame;
196  s->avr = avr;
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_readframe(aubio_source_avcodec_t *s, uint_t * read_samples) {
210  AVFormatContext *avFormatCtx = s->avFormatCtx;
211  AVCodecContext *avCodecCtx = s->avCodecCtx;
212  AVFrame *avFrame = s->avFrame;
213  AVPacket avPacket;
214  av_init_packet (&avPacket);
215  AVAudioResampleContext *avr = s->avr;
216  int16_t *output = s->output;
217
218  int err = av_read_frame (avFormatCtx, &avPacket);
219  if (err != 0) {
220    //AUBIO_ERR("Could not read frame for (%s)\n", s->path);
221    *read_samples = 0;
222    return;
223  }
224
225  int got_frame = 0;
226  int len = avcodec_decode_audio4(avCodecCtx, avFrame, &got_frame, &avPacket);
227
228  if (len < 0) {
229    AUBIO_ERR("Error while decoding %s\n", s->path);
230    return;
231  }
232  if (got_frame == 0) {
233    AUBIO_ERR("Could not get frame for (%s)\n", s->path);
234  } /* else {
235    int data_size =
236      av_samples_get_buffer_size(NULL,
237        avCodecCtx->channels, avFrame->nb_samples,
238        avCodecCtx->sample_fmt, 1);
239    AUBIO_WRN("Got data_size %d frame for (%s)\n", data_size, s->path);
240  } */
241
242  int in_samples = avFrame->nb_samples;
243  int in_plane_size = 0; //avFrame->linesize[0];
244  int out_plane_size = 0; //sizeof(float); //in_samples * sizeof(float);
245  int max_out_samples = AUBIO_AVCODEC_MIN_BUFFER_SIZE;
246  if (avresample_convert ( avr,
247        (uint8_t **)&output, out_plane_size, max_out_samples,
248        (uint8_t **)avFrame->data, in_plane_size, in_samples) < 0) {
249      AUBIO_ERR("Could not convert frame  (%s)\n", s->path);
250  }
251  //AUBIO_ERR("Got in_plane_size %d frame for (%s)\n", in_plane_size, s->path);
252  //AUBIO_WRN("Delay is %d for %s\n", avresample_get_delay(avr), s->path);
253  //AUBIO_WRN("max_out_samples is %d for AUBIO_AVCODEC_MIN_BUFFER_SIZE %d\n",
254  //    max_out_samples, AUBIO_AVCODEC_MIN_BUFFER_SIZE);
255
256  uint_t out_samples = avresample_available(avr) + (avresample_get_delay(avr)
257        + in_samples) * s->samplerate / s->input_samplerate;
258  //AUBIO_WRN("Converted %d to %d samples\n", in_samples, out_samples);
259  //for (i = 0; i < out_samples; i ++) {
260  //  AUBIO_DBG("%f\n", SHORT_TO_FLOAT(output[i]));
261  //}
262  av_free_packet(&avPacket);
263  s->avFormatCtx = avFormatCtx;
264  s->avCodecCtx = avCodecCtx;
265  s->avFrame = avFrame;
266  s->avr = avr;
267  s->output = output;
268
269  *read_samples = out_samples;
270}
271
272
273void aubio_source_avcodec_do(aubio_source_avcodec_t * s, fvec_t * read_data, uint_t * read){
274  uint_t i;
275  //AUBIO_DBG("entering 'do' with %d, %d\n", s->read_samples, s->read_index);
276  if (s->read_samples < s->hop_size) {
277    // write the end of the buffer to the beginning of read_data
278    uint_t partial = s->read_samples;
279    for (i = 0; i < partial; i++) {
280      read_data->data[i] = SHORT_TO_FLOAT(s->output[i + s->read_index]);
281    }
282    // get more data
283    uint_t avcodec_read = 0;
284    aubio_source_avcodec_readframe(s, &avcodec_read);
285    s->read_samples = avcodec_read;
286    s->read_index = 0;
287    // write the beginning of the buffer to the end of read_data
288    uint_t end = MIN(s->hop_size, s->read_samples);
289    if (avcodec_read == 0) {
290      end = partial;
291    }
292    for (i = partial; i < end; i++) {
293      read_data->data[i] = SHORT_TO_FLOAT(s->output[i - partial + s->read_index]);
294    }
295    if (end < s->hop_size) {
296      for (i = end; i < s->hop_size; i++) {
297        read_data->data[i] = 0.;
298      }
299    }
300    s->read_index += end - partial;
301    s->read_samples -= end - partial;
302    *read = end;
303  } else {
304    for (i = 0; i < s->hop_size; i++) {
305      read_data->data[i] = SHORT_TO_FLOAT(s->output[i + s->read_index]);
306    }
307    s->read_index += s->hop_size;
308    s->read_samples -= s->hop_size;
309    *read = s->hop_size;
310  }
311}
312
313void aubio_source_avcodec_do_multi(aubio_source_avcodec_t * s, fmat_t * read_data, uint_t * read){
314  //uint_t i,j, input_channels = s->input_channels;
315}
316
317uint_t aubio_source_avcodec_get_samplerate(aubio_source_avcodec_t * s) {
318  return s->samplerate;
319}
320
321uint_t aubio_source_avcodec_get_channels(aubio_source_avcodec_t * s) {
322  return s->input_channels;
323}
324
325uint_t aubio_source_avcodec_seek (aubio_source_avcodec_t * s, uint_t pos) {
326  //uint_t resampled_pos = (uint_t)ROUND(pos * s->input_samplerate * 1. / s->samplerate);
327  return 0; //sf_seek (s->handle, resampled_pos, SEEK_SET);
328}
329
330void del_aubio_source_avcodec(aubio_source_avcodec_t * s){
331  if (!s) return;
332  if (s->output != NULL) {
333    av_free(s->output);
334  }
335  if (s->avr != NULL) {
336    avresample_close( s->avr );
337    av_free ( s->avr );
338  }
339  s->avr = NULL;
340  if (s->avFrame != NULL) {
341    avcodec_free_frame( &(s->avFrame) );
342  }
343  s->avFrame = NULL;
344  if (s->avCodecCtx != NULL) {
345    avcodec_close ( s->avCodecCtx );
346  }
347  s->avCodecCtx = NULL;
348  if (s->avFormatCtx != NULL) {
349    avformat_close_input ( &(s->avFormatCtx) );
350  }
351  s->avFrame = NULL;
352  s->avFormatCtx = NULL;
353  AUBIO_FREE(s);
354}
355
356#endif /* HAVE_SNDFILE */
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