source: src/io/sink_wavwrite.c @ 3e1c482

feature/autosinkfeature/constantqfeature/pitchshiftfeature/timestretch
Last change on this file since 3e1c482 was 3e1c482, checked in by Paul Brossier <piem@piem.org>, 9 months ago

[io] clean up sink_wavwrite

  • Property mode set to 100644
File size: 8.2 KB
Line 
1/*
2  Copyright (C) 2014 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 "aubio_priv.h"
23
24#ifdef HAVE_WAVWRITE
25
26#include "fvec.h"
27#include "fmat.h"
28#include "io/sink_wavwrite.h"
29#include "io/ioutils.h"
30
31#include <errno.h>
32
33#define MAX_SIZE 4096
34
35#define FLOAT_TO_SHORT(x) (short)(x * 32768)
36
37// swap endian of a short
38#define SWAPS(x) ((x & 0xff) << 8) | ((x & 0xff00) >> 8)
39
40// swap host to little endian
41#if defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
42#define HTOLES(x) SWAPS(x)
43#elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
44#define HTOLES(x) x
45#else
46#ifdef HAVE_WIN_HACKS
47#define HTOLES(x) x
48#else
49#define HTOLES(x) SWAPS(htons(x))
50#endif
51#endif
52
53uint_t aubio_sink_wavwrite_open(aubio_sink_wavwrite_t *s);
54
55struct _aubio_sink_wavwrite_t {
56  char_t *path;
57  uint_t samplerate;
58  uint_t channels;
59  uint_t bitspersample;
60  uint_t total_frames_written;
61
62  FILE *fid;
63
64  uint_t max_size;
65
66  uint_t scratch_size;
67  unsigned short *scratch_data;
68};
69
70static unsigned char *write_little_endian (unsigned int s, unsigned char *str,
71    unsigned int length);
72
73static unsigned char *write_little_endian (unsigned int s, unsigned char *str,
74    unsigned int length)
75{
76  uint_t i;
77  for (i = 0; i < length; i++) {
78    str[i] = s >> (i * 8);
79  }
80  return str;
81}
82
83aubio_sink_wavwrite_t * new_aubio_sink_wavwrite(const char_t * path, uint_t samplerate) {
84  aubio_sink_wavwrite_t * s = AUBIO_NEW(aubio_sink_wavwrite_t);
85
86  if (path == NULL) {
87    AUBIO_ERR("sink_wavwrite: Aborted opening null path\n");
88    goto beach;
89  }
90
91  s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);
92  strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);
93
94  s->max_size = MAX_SIZE;
95  s->bitspersample = 16;
96  s->total_frames_written = 0;
97
98  s->samplerate = 0;
99  s->channels = 0;
100
101  // zero samplerate given. do not open yet
102  if ((sint_t)samplerate == 0) {
103    return s;
104  }
105  // invalid samplerate given, abort
106  if (aubio_io_validate_samplerate("sink_wavwrite", s->path, samplerate)) {
107    goto beach;
108  }
109
110  s->samplerate = samplerate;
111  s->channels = 1;
112
113  if (aubio_sink_wavwrite_open(s) != AUBIO_OK) {
114    // open failed, abort
115    goto beach;
116  }
117
118  return s;
119beach:
120  //AUBIO_ERR("sink_wavwrite: failed creating %s with samplerate %dHz\n",
121  //    s->path, s->samplerate);
122  del_aubio_sink_wavwrite(s);
123  return NULL;
124}
125
126uint_t aubio_sink_wavwrite_preset_samplerate(aubio_sink_wavwrite_t *s, uint_t samplerate)
127{
128  if (aubio_io_validate_samplerate("sink_wavwrite", s->path, samplerate)) {
129    return AUBIO_FAIL;
130  }
131  s->samplerate = samplerate;
132  // automatically open when both samplerate and channels have been set
133  if (/* s->samplerate != 0 && */ s->channels != 0) {
134    return aubio_sink_wavwrite_open(s);
135  }
136  return AUBIO_OK;
137}
138
139uint_t aubio_sink_wavwrite_preset_channels(aubio_sink_wavwrite_t *s, uint_t channels)
140{
141  if (aubio_io_validate_channels("sink_wavwrite", s->path, channels)) {
142    return AUBIO_FAIL;
143  }
144  s->channels = channels;
145  // automatically open when both samplerate and channels have been set
146  if (s->samplerate != 0 /* && s->channels != 0 */) {
147    return aubio_sink_wavwrite_open(s);
148  }
149  return AUBIO_OK;
150}
151
152uint_t aubio_sink_wavwrite_get_samplerate(const aubio_sink_wavwrite_t *s)
153{
154  return s->samplerate;
155}
156
157uint_t aubio_sink_wavwrite_get_channels(const aubio_sink_wavwrite_t *s)
158{
159  return s->channels;
160}
161
162uint_t aubio_sink_wavwrite_open(aubio_sink_wavwrite_t *s) {
163  unsigned char buf[5];
164  uint_t byterate, blockalign;
165
166  /* open output file */
167  s->fid = fopen((const char *)s->path, "wb");
168  if (!s->fid) {
169    AUBIO_ERR("sink_wavwrite: could not open %s (%s)\n", s->path, strerror(errno));
170    goto beach;
171  }
172
173  // ChunkID
174  fwrite("RIFF", 4, 1, s->fid);
175
176  // ChunkSize (0 for now, actual size will be written in _close)
177  fwrite(write_little_endian(0, buf, 4), 4, 1, s->fid);
178
179  // Format
180  fwrite("WAVE", 4, 1, s->fid);
181
182  // Subchunk1ID
183  fwrite("fmt ", 4, 1, s->fid);
184
185  // Subchunk1Size
186  fwrite(write_little_endian(16, buf, 4), 4, 1, s->fid);
187
188  // AudioFormat
189  fwrite(write_little_endian(1, buf, 2), 2, 1, s->fid);
190
191  // NumChannels
192  fwrite(write_little_endian(s->channels, buf, 2), 2, 1, s->fid);
193
194  // SampleRate
195  fwrite(write_little_endian(s->samplerate, buf, 4), 4, 1, s->fid);
196
197  // ByteRate
198  byterate = s->samplerate * s->channels * s->bitspersample / 8;
199  fwrite(write_little_endian(byterate, buf, 4), 4, 1, s->fid);
200
201  // BlockAlign
202  blockalign = s->channels * s->bitspersample / 8;
203  fwrite(write_little_endian(blockalign, buf, 2), 2, 1, s->fid);
204
205  // BitsPerSample
206  fwrite(write_little_endian(s->bitspersample, buf, 2), 2, 1, s->fid);
207
208  // Subchunk2ID
209  fwrite("data", 4, 1, s->fid);
210
211  // Subchunk1Size (0 for now, actual size will be written in _close)
212  fwrite(write_little_endian(0, buf, 4), 4, 1, s->fid);
213
214  s->scratch_size = s->max_size * s->channels;
215  /* allocate data for de/interleaving reallocated when needed. */
216  if (s->scratch_size >= MAX_SIZE * AUBIO_MAX_CHANNELS) {
217    AUBIO_ERR("sink_wavwrite: %d x %d exceeds SIZE maximum buffer size %d\n",
218        s->max_size, s->channels, MAX_SIZE * AUBIO_MAX_CHANNELS);
219    goto beach;
220  }
221  s->scratch_data = AUBIO_ARRAY(unsigned short,s->scratch_size);
222
223  return AUBIO_OK;
224
225beach:
226  return AUBIO_FAIL;
227}
228
229
230void aubio_sink_wavwrite_do(aubio_sink_wavwrite_t *s, fvec_t * write_data, uint_t write){
231  uint_t c = 0, i = 0, written_frames = 0;
232  uint_t length = aubio_sink_validate_input_length("sink_wavwrite", s->path,
233      s->max_size, write_data->length, write);
234
235  for (c = 0; c < s->channels; c++) {
236    for (i = 0; i < length; i++) {
237      s->scratch_data[i * s->channels + c] = HTOLES(FLOAT_TO_SHORT(write_data->data[i]));
238    }
239  }
240  written_frames = fwrite(s->scratch_data, 2, length * s->channels, s->fid);
241
242  if (written_frames != write) {
243    AUBIO_WRN("sink_wavwrite: trying to write %d frames to %s, "
244        "but only %d could be written\n", write, s->path, written_frames);
245  }
246  s->total_frames_written += written_frames;
247  return;
248}
249
250void aubio_sink_wavwrite_do_multi(aubio_sink_wavwrite_t *s, fmat_t * write_data, uint_t write){
251  uint_t c = 0, i = 0, written_frames = 0;
252
253  uint_t channels = aubio_sink_validate_input_channels("sink_wavwrite", s->path,
254      s->channels, write_data->height);
255  uint_t length = aubio_sink_validate_input_length("sink_wavwrite", s->path,
256      s->max_size, write_data->length, write);
257
258  for (c = 0; c < channels; c++) {
259    for (i = 0; i < length; i++) {
260      s->scratch_data[i * s->channels + c] = HTOLES(FLOAT_TO_SHORT(write_data->data[c][i]));
261    }
262  }
263  written_frames = fwrite(s->scratch_data, 2, length * s->channels, s->fid);
264
265  if (written_frames != write * s->channels) {
266    AUBIO_WRN("sink_wavwrite: trying to write %d frames to %s, "
267        "but only %d could be written\n", write, s->path, written_frames / s->channels);
268  }
269  s->total_frames_written += written_frames;
270  return;
271}
272
273uint_t aubio_sink_wavwrite_close(aubio_sink_wavwrite_t * s) {
274  uint_t data_size = s->total_frames_written * s->bitspersample * s->channels / 8;
275  unsigned char buf[5];
276  if (!s->fid) return AUBIO_FAIL;
277  // ChunkSize
278  fseek(s->fid, 4, SEEK_SET);
279  fwrite(write_little_endian(data_size + 36, buf, 4), 4, 1, s->fid);
280  // Subchunk2Size
281  fseek(s->fid, 40, SEEK_SET);
282  fwrite(write_little_endian(data_size, buf, 4), 4, 1, s->fid);
283  // close file
284  if (fclose(s->fid)) {
285    AUBIO_ERR("sink_wavwrite: Error closing file %s (%s)\n", s->path, strerror(errno));
286  }
287  s->fid = NULL;
288  return AUBIO_OK;
289}
290
291void del_aubio_sink_wavwrite(aubio_sink_wavwrite_t * s){
292  AUBIO_ASSERT(s);
293  if (s->fid)
294    aubio_sink_wavwrite_close(s);
295  if (s->path)
296    AUBIO_FREE(s->path);
297  if (s->scratch_data)
298    AUBIO_FREE(s->scratch_data);
299  AUBIO_FREE(s);
300}
301
302#endif /* HAVE_WAVWRITE */
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