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"
33 #define MAX_CHANNELS 6
36 #define FLOAT_TO_SHORT(x) (short)(x * 32768)
38 // swap endian of a short
39 #define SWAPS(x) ((x & 0xff) << 8) | ((x & 0xff00) >> 8)
41 // swap host to little endian
42 #if defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
43 #define HTOLES(x) SWAPS(x)
44 #elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
47 #define HTOLES(x) SWAPS(htons(x))
50 uint_t aubio_sink_wavwrite_open(aubio_sink_wavwrite_t *s);
52 struct _aubio_sink_wavwrite_t {
57 uint_t total_frames_written;
64 unsigned short *scratch_data;
67 unsigned char *write_little_endian (unsigned int s, unsigned char *str, unsigned int length);
68 unsigned char *write_little_endian (unsigned int s, unsigned char *str, unsigned int length) {
70 for (i = 0; i < length; i++) {
71 str[i] = s >> (i * 8);
76 aubio_sink_wavwrite_t * new_aubio_sink_wavwrite(char_t * path, uint_t samplerate) {
77 aubio_sink_wavwrite_t * s = AUBIO_NEW(aubio_sink_wavwrite_t);
80 AUBIO_ERR("sink_wavwrite: Aborted opening null path\n");
83 if ((sint_t)samplerate < 0) {
84 AUBIO_ERR("sink_wavwrite: Can not create %s with samplerate %d\n", path, samplerate);
89 s->max_size = MAX_SIZE;
90 s->bitspersample = 16;
91 s->total_frames_written = 0;
96 // negative samplerate given, abort
97 if ((sint_t)samplerate < 0) goto beach;
98 // zero samplerate given. do not open yet
99 if ((sint_t)samplerate == 0) return s;
101 s->samplerate = samplerate;
104 if (aubio_sink_wavwrite_open(s) != AUBIO_OK) {
105 // open failed, abort
111 //AUBIO_ERR("sink_wavwrite: failed creating %s with samplerate %dHz\n",
112 // s->path, s->samplerate);
113 del_aubio_sink_wavwrite(s);
117 uint_t aubio_sink_wavwrite_preset_samplerate(aubio_sink_wavwrite_t *s, uint_t samplerate)
119 if ((sint_t)(samplerate) <= 0) return AUBIO_FAIL;
120 s->samplerate = samplerate;
121 // automatically open when both samplerate and channels have been set
122 if (s->samplerate != 0 && s->channels != 0) {
123 return aubio_sink_wavwrite_open(s);
128 uint_t aubio_sink_wavwrite_preset_channels(aubio_sink_wavwrite_t *s, uint_t channels)
130 if ((sint_t)(channels) <= 0) return AUBIO_FAIL;
131 s->channels = channels;
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);
139 uint_t aubio_sink_wavwrite_get_samplerate(aubio_sink_wavwrite_t *s)
141 return s->samplerate;
144 uint_t aubio_sink_wavwrite_get_channels(aubio_sink_wavwrite_t *s)
149 uint_t aubio_sink_wavwrite_open(aubio_sink_wavwrite_t *s) {
150 unsigned char buf[5];
151 uint_t byterate, blockalign;
153 /* open output file */
154 s->fid = fopen((const char *)s->path, "wb");
156 AUBIO_ERR("sink_wavwrite: could not open %s (%s)\n", s->path, strerror(errno));
161 fwrite("RIFF", 4, 1, s->fid);
163 // ChunkSize (0 for now, actual size will be written in _close)
164 fwrite(write_little_endian(0, buf, 4), 4, 1, s->fid);
167 fwrite("WAVE", 4, 1, s->fid);
170 fwrite("fmt ", 4, 1, s->fid);
173 fwrite(write_little_endian(16, buf, 4), 4, 1, s->fid);
176 fwrite(write_little_endian(1, buf, 2), 2, 1, s->fid);
179 fwrite(write_little_endian(s->channels, buf, 2), 2, 1, s->fid);
182 fwrite(write_little_endian(s->samplerate, buf, 4), 4, 1, s->fid);
185 byterate = s->samplerate * s->channels * s->bitspersample / 8;
186 fwrite(write_little_endian(byterate, buf, 4), 4, 1, s->fid);
189 blockalign = s->channels * s->bitspersample / 8;
190 fwrite(write_little_endian(blockalign, buf, 2), 2, 1, s->fid);
193 fwrite(write_little_endian(s->bitspersample, buf, 2), 2, 1, s->fid);
196 fwrite("data", 4, 1, s->fid);
198 // Subchunk1Size (0 for now, actual size will be written in _close)
199 fwrite(write_little_endian(0, buf, 4), 4, 1, s->fid);
201 s->scratch_size = s->max_size * s->channels;
202 /* allocate data for de/interleaving reallocated when needed. */
203 if (s->scratch_size >= MAX_SIZE * MAX_CHANNELS) {
204 AUBIO_ERR("sink_wavwrite: %d x %d exceeds SIZE maximum buffer size %d\n",
205 s->max_size, s->channels, MAX_SIZE * MAX_CHANNELS);
208 s->scratch_data = AUBIO_ARRAY(unsigned short,s->scratch_size);
217 void aubio_sink_wavwrite_do(aubio_sink_wavwrite_t *s, fvec_t * write_data, uint_t write){
218 uint_t i = 0, written_frames = 0;
220 if (write > s->max_size) {
221 AUBIO_WRN("sink_wavwrite: trying to write %d frames to %s, "
222 "but only %d can be written at a time\n", write, s->path, s->max_size);
226 for (i = 0; i < write; i++) {
227 s->scratch_data[i] = HTOLES(FLOAT_TO_SHORT(write_data->data[i]));
229 written_frames = fwrite(s->scratch_data, 2, write, s->fid);
231 if (written_frames != write) {
232 AUBIO_WRN("sink_wavwrite: trying to write %d frames to %s, "
233 "but only %d could be written\n", write, s->path, written_frames);
235 s->total_frames_written += written_frames;
239 void aubio_sink_wavwrite_do_multi(aubio_sink_wavwrite_t *s, fmat_t * write_data, uint_t write){
240 uint_t c = 0, i = 0, written_frames = 0;
242 if (write > s->max_size) {
243 AUBIO_WRN("sink_wavwrite: trying to write %d frames to %s, "
244 "but only %d can be written at a time\n", write, s->path, s->max_size);
248 for (c = 0; c < s->channels; c++) {
249 for (i = 0; i < write; i++) {
250 s->scratch_data[i * s->channels + c] = HTOLES(FLOAT_TO_SHORT(write_data->data[c][i]));
253 written_frames = fwrite(s->scratch_data, 2, write * s->channels, s->fid);
255 if (written_frames != write * s->channels) {
256 AUBIO_WRN("sink_wavwrite: trying to write %d frames to %s, "
257 "but only %d could be written\n", write, s->path, written_frames / s->channels);
259 s->total_frames_written += written_frames;
263 uint_t aubio_sink_wavwrite_close(aubio_sink_wavwrite_t * s) {
264 uint_t data_size = s->total_frames_written * s->bitspersample * s->channels / 8;
265 unsigned char buf[5];
266 if (!s->fid) return AUBIO_FAIL;
268 fseek(s->fid, 4, SEEK_SET);
269 fwrite(write_little_endian(data_size + 36, buf, 4), 4, 1, s->fid);
271 fseek(s->fid, 40, SEEK_SET);
272 fwrite(write_little_endian(data_size, buf, 4), 4, 1, s->fid);
274 if (fclose(s->fid)) {
275 AUBIO_ERR("sink_wavwrite: Error closing file %s (%s)\n", s->path, strerror(errno));
281 void del_aubio_sink_wavwrite(aubio_sink_wavwrite_t * s){
283 aubio_sink_wavwrite_close(s);
284 AUBIO_FREE(s->scratch_data);
288 #endif /* HAVE_WAVWRITE */