2 Copyright (C) 2014 Paul Brossier <piem@aubio.org>
4 This file is part of aubio.
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.
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.
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/>.
22 #include "aubio_priv.h"
28 #include "io/sink_wavwrite.h"
29 #include "io/ioutils.h"
35 #define FLOAT_TO_SHORT(x) (short)(x * 32768)
37 // swap endian of a short
38 #define SWAPS(x) ((x & 0xff) << 8) | ((x & 0xff00) >> 8)
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__)
49 #define HTOLES(x) SWAPS(htons(x))
53 uint_t aubio_sink_wavwrite_open(aubio_sink_wavwrite_t *s);
55 struct _aubio_sink_wavwrite_t {
60 uint_t total_frames_written;
67 unsigned short *scratch_data;
70 static unsigned char *write_little_endian (unsigned int s, unsigned char *str,
73 static unsigned char *write_little_endian (unsigned int s, unsigned char *str,
77 for (i = 0; i < length; i++) {
78 str[i] = s >> (i * 8);
83 aubio_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);
87 AUBIO_ERR("sink_wavwrite: Aborted opening null path\n");
90 if ((sint_t)samplerate < 0) {
91 AUBIO_ERR("sink_wavwrite: Can not create %s with samplerate %d\n", path, samplerate);
95 if (s->path) AUBIO_FREE(s->path);
96 s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);
97 strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);
99 s->max_size = MAX_SIZE;
100 s->bitspersample = 16;
101 s->total_frames_written = 0;
106 // zero samplerate given. do not open yet
107 if ((sint_t)samplerate == 0) {
110 // invalid samplerate given, abort
111 if (aubio_io_validate_samplerate("sink_wavwrite", s->path, samplerate)) {
115 s->samplerate = samplerate;
118 if (aubio_sink_wavwrite_open(s) != AUBIO_OK) {
119 // open failed, abort
125 //AUBIO_ERR("sink_wavwrite: failed creating %s with samplerate %dHz\n",
126 // s->path, s->samplerate);
127 del_aubio_sink_wavwrite(s);
131 uint_t aubio_sink_wavwrite_preset_samplerate(aubio_sink_wavwrite_t *s, uint_t samplerate)
133 if (aubio_io_validate_samplerate("sink_wavwrite", s->path, samplerate)) {
136 s->samplerate = samplerate;
137 // automatically open when both samplerate and channels have been set
138 if (s->samplerate != 0 && s->channels != 0) {
139 return aubio_sink_wavwrite_open(s);
144 uint_t aubio_sink_wavwrite_preset_channels(aubio_sink_wavwrite_t *s, uint_t channels)
146 if (aubio_io_validate_channels("sink_wavwrite", s->path, channels)) {
149 s->channels = channels;
150 // automatically open when both samplerate and channels have been set
151 if (s->samplerate != 0 && s->channels != 0) {
152 return aubio_sink_wavwrite_open(s);
157 uint_t aubio_sink_wavwrite_get_samplerate(const aubio_sink_wavwrite_t *s)
159 return s->samplerate;
162 uint_t aubio_sink_wavwrite_get_channels(const aubio_sink_wavwrite_t *s)
167 uint_t aubio_sink_wavwrite_open(aubio_sink_wavwrite_t *s) {
168 unsigned char buf[5];
169 uint_t byterate, blockalign;
171 /* open output file */
172 s->fid = fopen((const char *)s->path, "wb");
174 AUBIO_ERR("sink_wavwrite: could not open %s (%s)\n", s->path, strerror(errno));
179 fwrite("RIFF", 4, 1, s->fid);
181 // ChunkSize (0 for now, actual size will be written in _close)
182 fwrite(write_little_endian(0, buf, 4), 4, 1, s->fid);
185 fwrite("WAVE", 4, 1, s->fid);
188 fwrite("fmt ", 4, 1, s->fid);
191 fwrite(write_little_endian(16, buf, 4), 4, 1, s->fid);
194 fwrite(write_little_endian(1, buf, 2), 2, 1, s->fid);
197 fwrite(write_little_endian(s->channels, buf, 2), 2, 1, s->fid);
200 fwrite(write_little_endian(s->samplerate, buf, 4), 4, 1, s->fid);
203 byterate = s->samplerate * s->channels * s->bitspersample / 8;
204 fwrite(write_little_endian(byterate, buf, 4), 4, 1, s->fid);
207 blockalign = s->channels * s->bitspersample / 8;
208 fwrite(write_little_endian(blockalign, buf, 2), 2, 1, s->fid);
211 fwrite(write_little_endian(s->bitspersample, buf, 2), 2, 1, s->fid);
214 fwrite("data", 4, 1, s->fid);
216 // Subchunk1Size (0 for now, actual size will be written in _close)
217 fwrite(write_little_endian(0, buf, 4), 4, 1, s->fid);
219 s->scratch_size = s->max_size * s->channels;
220 /* allocate data for de/interleaving reallocated when needed. */
221 if (s->scratch_size >= MAX_SIZE * AUBIO_MAX_CHANNELS) {
222 AUBIO_ERR("sink_wavwrite: %d x %d exceeds SIZE maximum buffer size %d\n",
223 s->max_size, s->channels, MAX_SIZE * AUBIO_MAX_CHANNELS);
226 s->scratch_data = AUBIO_ARRAY(unsigned short,s->scratch_size);
235 void aubio_sink_wavwrite_do(aubio_sink_wavwrite_t *s, fvec_t * write_data, uint_t write){
236 uint_t i = 0, written_frames = 0;
238 if (write > s->max_size) {
239 AUBIO_WRN("sink_wavwrite: trying to write %d frames to %s, "
240 "but only %d can be written at a time\n", write, s->path, s->max_size);
244 for (i = 0; i < write; i++) {
245 s->scratch_data[i] = HTOLES(FLOAT_TO_SHORT(write_data->data[i]));
247 written_frames = fwrite(s->scratch_data, 2, write, s->fid);
249 if (written_frames != write) {
250 AUBIO_WRN("sink_wavwrite: trying to write %d frames to %s, "
251 "but only %d could be written\n", write, s->path, written_frames);
253 s->total_frames_written += written_frames;
257 void aubio_sink_wavwrite_do_multi(aubio_sink_wavwrite_t *s, fmat_t * write_data, uint_t write){
258 uint_t c = 0, i = 0, written_frames = 0;
260 if (write > s->max_size) {
261 AUBIO_WRN("sink_wavwrite: trying to write %d frames to %s, "
262 "but only %d can be written at a time\n", write, s->path, s->max_size);
266 for (c = 0; c < s->channels; c++) {
267 for (i = 0; i < write; i++) {
268 s->scratch_data[i * s->channels + c] = HTOLES(FLOAT_TO_SHORT(write_data->data[c][i]));
271 written_frames = fwrite(s->scratch_data, 2, write * s->channels, s->fid);
273 if (written_frames != write * s->channels) {
274 AUBIO_WRN("sink_wavwrite: trying to write %d frames to %s, "
275 "but only %d could be written\n", write, s->path, written_frames / s->channels);
277 s->total_frames_written += written_frames;
281 uint_t aubio_sink_wavwrite_close(aubio_sink_wavwrite_t * s) {
282 uint_t data_size = s->total_frames_written * s->bitspersample * s->channels / 8;
283 unsigned char buf[5];
284 if (!s->fid) return AUBIO_FAIL;
286 fseek(s->fid, 4, SEEK_SET);
287 fwrite(write_little_endian(data_size + 36, buf, 4), 4, 1, s->fid);
289 fseek(s->fid, 40, SEEK_SET);
290 fwrite(write_little_endian(data_size, buf, 4), 4, 1, s->fid);
292 if (fclose(s->fid)) {
293 AUBIO_ERR("sink_wavwrite: Error closing file %s (%s)\n", s->path, strerror(errno));
299 void del_aubio_sink_wavwrite(aubio_sink_wavwrite_t * s){
301 aubio_sink_wavwrite_close(s);
302 if (s->path) AUBIO_FREE(s->path);
303 AUBIO_FREE(s->scratch_data);
307 #endif /* HAVE_WAVWRITE */