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/>.
26 #include "aubio_priv.h"
29 #include "io/sink_wavwrite.h"
30 #include "io/ioutils.h"
34 #define MAX_CHANNELS 6
37 #define FLOAT_TO_SHORT(x) (short)(x * 32768)
39 // swap endian of a short
40 #define SWAPS(x) ((x & 0xff) << 8) | ((x & 0xff00) >> 8)
42 // swap host to little endian
43 #if defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
44 #define HTOLES(x) SWAPS(x)
45 #elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
51 #define HTOLES(x) SWAPS(htons(x))
55 uint_t aubio_sink_wavwrite_open(aubio_sink_wavwrite_t *s);
57 struct _aubio_sink_wavwrite_t {
62 uint_t total_frames_written;
69 unsigned short *scratch_data;
72 static unsigned char *write_little_endian (unsigned int s, unsigned char *str,
75 static unsigned char *write_little_endian (unsigned int s, unsigned char *str,
79 for (i = 0; i < length; i++) {
80 str[i] = s >> (i * 8);
85 aubio_sink_wavwrite_t * new_aubio_sink_wavwrite(const char_t * path, uint_t samplerate) {
86 aubio_sink_wavwrite_t * s = AUBIO_NEW(aubio_sink_wavwrite_t);
89 AUBIO_ERR("sink_wavwrite: Aborted opening null path\n");
92 if ((sint_t)samplerate < 0) {
93 AUBIO_ERR("sink_wavwrite: Can not create %s with samplerate %d\n", path, samplerate);
97 if (s->path) AUBIO_FREE(s->path);
98 s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);
99 strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);
101 s->max_size = MAX_SIZE;
102 s->bitspersample = 16;
103 s->total_frames_written = 0;
108 // zero samplerate given. do not open yet
109 if ((sint_t)samplerate == 0) {
112 // invalid samplerate given, abort
113 if (aubio_io_validate_samplerate("sink_wavwrite", s->path, samplerate)) {
117 s->samplerate = samplerate;
120 if (aubio_sink_wavwrite_open(s) != AUBIO_OK) {
121 // open failed, abort
127 //AUBIO_ERR("sink_wavwrite: failed creating %s with samplerate %dHz\n",
128 // s->path, s->samplerate);
129 del_aubio_sink_wavwrite(s);
133 uint_t aubio_sink_wavwrite_preset_samplerate(aubio_sink_wavwrite_t *s, uint_t samplerate)
135 if (aubio_io_validate_samplerate("sink_wavwrite", s->path, samplerate)) {
138 s->samplerate = samplerate;
139 // automatically open when both samplerate and channels have been set
140 if (s->samplerate != 0 && s->channels != 0) {
141 return aubio_sink_wavwrite_open(s);
146 uint_t aubio_sink_wavwrite_preset_channels(aubio_sink_wavwrite_t *s, uint_t channels)
148 if (aubio_io_validate_channels("sink_wavwrite", s->path, channels)) {
151 s->channels = channels;
152 // automatically open when both samplerate and channels have been set
153 if (s->samplerate != 0 && s->channels != 0) {
154 return aubio_sink_wavwrite_open(s);
159 uint_t aubio_sink_wavwrite_get_samplerate(const aubio_sink_wavwrite_t *s)
161 return s->samplerate;
164 uint_t aubio_sink_wavwrite_get_channels(const aubio_sink_wavwrite_t *s)
169 uint_t aubio_sink_wavwrite_open(aubio_sink_wavwrite_t *s) {
170 unsigned char buf[5];
171 uint_t byterate, blockalign;
173 /* open output file */
174 s->fid = fopen((const char *)s->path, "wb");
176 AUBIO_ERR("sink_wavwrite: could not open %s (%s)\n", s->path, strerror(errno));
181 fwrite("RIFF", 4, 1, s->fid);
183 // ChunkSize (0 for now, actual size will be written in _close)
184 fwrite(write_little_endian(0, buf, 4), 4, 1, s->fid);
187 fwrite("WAVE", 4, 1, s->fid);
190 fwrite("fmt ", 4, 1, s->fid);
193 fwrite(write_little_endian(16, buf, 4), 4, 1, s->fid);
196 fwrite(write_little_endian(1, buf, 2), 2, 1, s->fid);
199 fwrite(write_little_endian(s->channels, buf, 2), 2, 1, s->fid);
202 fwrite(write_little_endian(s->samplerate, buf, 4), 4, 1, s->fid);
205 byterate = s->samplerate * s->channels * s->bitspersample / 8;
206 fwrite(write_little_endian(byterate, buf, 4), 4, 1, s->fid);
209 blockalign = s->channels * s->bitspersample / 8;
210 fwrite(write_little_endian(blockalign, buf, 2), 2, 1, s->fid);
213 fwrite(write_little_endian(s->bitspersample, buf, 2), 2, 1, s->fid);
216 fwrite("data", 4, 1, s->fid);
218 // Subchunk1Size (0 for now, actual size will be written in _close)
219 fwrite(write_little_endian(0, buf, 4), 4, 1, s->fid);
221 s->scratch_size = s->max_size * s->channels;
222 /* allocate data for de/interleaving reallocated when needed. */
223 if (s->scratch_size >= MAX_SIZE * MAX_CHANNELS) {
224 AUBIO_ERR("sink_wavwrite: %d x %d exceeds SIZE maximum buffer size %d\n",
225 s->max_size, s->channels, MAX_SIZE * MAX_CHANNELS);
228 s->scratch_data = AUBIO_ARRAY(unsigned short,s->scratch_size);
237 void aubio_sink_wavwrite_do(aubio_sink_wavwrite_t *s, fvec_t * write_data, uint_t write){
238 uint_t i = 0, written_frames = 0;
240 if (write > s->max_size) {
241 AUBIO_WRN("sink_wavwrite: trying to write %d frames to %s, "
242 "but only %d can be written at a time\n", write, s->path, s->max_size);
246 for (i = 0; i < write; i++) {
247 s->scratch_data[i] = HTOLES(FLOAT_TO_SHORT(write_data->data[i]));
249 written_frames = fwrite(s->scratch_data, 2, write, s->fid);
251 if (written_frames != write) {
252 AUBIO_WRN("sink_wavwrite: trying to write %d frames to %s, "
253 "but only %d could be written\n", write, s->path, written_frames);
255 s->total_frames_written += written_frames;
259 void aubio_sink_wavwrite_do_multi(aubio_sink_wavwrite_t *s, fmat_t * write_data, uint_t write){
260 uint_t c = 0, i = 0, written_frames = 0;
262 if (write > s->max_size) {
263 AUBIO_WRN("sink_wavwrite: trying to write %d frames to %s, "
264 "but only %d can be written at a time\n", write, s->path, s->max_size);
268 for (c = 0; c < s->channels; c++) {
269 for (i = 0; i < write; i++) {
270 s->scratch_data[i * s->channels + c] = HTOLES(FLOAT_TO_SHORT(write_data->data[c][i]));
273 written_frames = fwrite(s->scratch_data, 2, write * s->channels, s->fid);
275 if (written_frames != write * s->channels) {
276 AUBIO_WRN("sink_wavwrite: trying to write %d frames to %s, "
277 "but only %d could be written\n", write, s->path, written_frames / s->channels);
279 s->total_frames_written += written_frames;
283 uint_t aubio_sink_wavwrite_close(aubio_sink_wavwrite_t * s) {
284 uint_t data_size = s->total_frames_written * s->bitspersample * s->channels / 8;
285 unsigned char buf[5];
286 if (!s->fid) return AUBIO_FAIL;
288 fseek(s->fid, 4, SEEK_SET);
289 fwrite(write_little_endian(data_size + 36, buf, 4), 4, 1, s->fid);
291 fseek(s->fid, 40, SEEK_SET);
292 fwrite(write_little_endian(data_size, buf, 4), 4, 1, s->fid);
294 if (fclose(s->fid)) {
295 AUBIO_ERR("sink_wavwrite: Error closing file %s (%s)\n", s->path, strerror(errno));
301 void del_aubio_sink_wavwrite(aubio_sink_wavwrite_t * s){
303 aubio_sink_wavwrite_close(s);
304 if (s->path) AUBIO_FREE(s->path);
305 AUBIO_FREE(s->scratch_data);
309 #endif /* HAVE_WAVWRITE */