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author | David Walter Seikel | 2012-01-04 18:41:13 +1000 |
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committer | David Walter Seikel | 2012-01-04 18:41:13 +1000 |
commit | dd7595a3475407a7fa96a97393bae8c5220e8762 (patch) | |
tree | e341e911d7eb911a51684a7412ef7f7c7605d28e /libraries/edje/src/modules/eet_snd_reader/eet_snd_reader.c | |
parent | Add the skeleton. (diff) | |
download | SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.zip SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.tar.gz SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.tar.bz2 SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.tar.xz |
Add the base Enlightenment Foundation Libraries - eina, eet, evas, ecore, embryo, and edje.
Note that embryo wont be used, but I'm not sure yet if you can build edje without it.
Diffstat (limited to '')
-rw-r--r-- | libraries/edje/src/modules/eet_snd_reader/eet_snd_reader.c | 498 |
1 files changed, 498 insertions, 0 deletions
diff --git a/libraries/edje/src/modules/eet_snd_reader/eet_snd_reader.c b/libraries/edje/src/modules/eet_snd_reader/eet_snd_reader.c new file mode 100644 index 0000000..4e2dec9 --- /dev/null +++ b/libraries/edje/src/modules/eet_snd_reader/eet_snd_reader.c | |||
@@ -0,0 +1,498 @@ | |||
1 | /* | ||
2 | * RemixSnd_eetfile: a libsnd EET Virtual file handler | ||
3 | * | ||
4 | * Govindaraju SM <govi.sm@samsung.com>, August 2011 | ||
5 | * Prince Kumar Dubey <prince.dubey@samsung.com>, August 2011 | ||
6 | */ | ||
7 | |||
8 | #include "config.h" | ||
9 | #include <math.h> | ||
10 | #include <sndfile.h> | ||
11 | #include <remix/remix.h> | ||
12 | #include <Eet.h> | ||
13 | |||
14 | #define PATH_KEY 1 | ||
15 | #define SOUND_ID_KEY 2 | ||
16 | #define SPEED_KEY 3 | ||
17 | #define BLOCK_FRAMES 8192 | ||
18 | |||
19 | static RemixBase *remix_eet_sndfile_optimise(RemixEnv *env, RemixBase *sndfile); | ||
20 | |||
21 | typedef struct _VIO_DATA VIO_DATA; | ||
22 | typedef struct _SndInstanceData SndInstanceData; | ||
23 | |||
24 | struct _VIO_DATA | ||
25 | { | ||
26 | sf_count_t offset, length; | ||
27 | const char *data; | ||
28 | }; | ||
29 | |||
30 | struct _SndInstanceData | ||
31 | { | ||
32 | /* plugin parameters */ | ||
33 | char *path; | ||
34 | char *sound_id; | ||
35 | double speed; | ||
36 | |||
37 | /* Edj & Sndfile Reader */ | ||
38 | Eet_File *efp; | ||
39 | SNDFILE *pcm_fp; | ||
40 | SF_INFO *snd_info; | ||
41 | VIO_DATA *vio_data; | ||
42 | |||
43 | /* PCM buffers */ | ||
44 | RemixPCM *readbuf; | ||
45 | RemixPCM *inbuf; | ||
46 | RemixPCM *outbuf; | ||
47 | |||
48 | /* Resample stuffs */ | ||
49 | RemixPCM prevreadbuf[2]; | ||
50 | int enable_resample; | ||
51 | double rs_ratio; | ||
52 | RemixCount resample_len; | ||
53 | RemixCount in_avail; | ||
54 | RemixCount out_generated; | ||
55 | RemixCount required_resamples; | ||
56 | }; | ||
57 | |||
58 | static sf_count_t | ||
59 | eet_snd_file_get_length(void *user_data) | ||
60 | { | ||
61 | VIO_DATA *vf = user_data; | ||
62 | return vf->length; | ||
63 | } | ||
64 | |||
65 | static sf_count_t | ||
66 | eet_snd_file_seek(sf_count_t offset, int whence, void *user_data) | ||
67 | { | ||
68 | VIO_DATA *vf = user_data; | ||
69 | |||
70 | switch (whence) | ||
71 | { | ||
72 | case SEEK_SET: | ||
73 | vf->offset = offset; | ||
74 | break; | ||
75 | case SEEK_CUR: | ||
76 | vf->offset += offset; | ||
77 | break; | ||
78 | case SEEK_END: | ||
79 | vf->offset = vf->length + offset; | ||
80 | break; | ||
81 | default: | ||
82 | break; | ||
83 | } | ||
84 | return vf->offset; | ||
85 | } | ||
86 | |||
87 | static sf_count_t | ||
88 | eet_snd_file_read(void *ptr, sf_count_t count, void *user_data) | ||
89 | { | ||
90 | VIO_DATA *vf = user_data; | ||
91 | |||
92 | if ((vf->offset + count) > vf->length) | ||
93 | count = vf->length - vf->offset; | ||
94 | memcpy(ptr, vf->data + vf->offset, count); | ||
95 | vf->offset += count; | ||
96 | return count; | ||
97 | } | ||
98 | |||
99 | static sf_count_t | ||
100 | eet_snd_file_tell(void *user_data) | ||
101 | { | ||
102 | VIO_DATA *vf = user_data; | ||
103 | return vf->offset; | ||
104 | } | ||
105 | |||
106 | static int | ||
107 | remix_init_resampler_data(RemixEnv *env, RemixBase *base) | ||
108 | { | ||
109 | SndInstanceData *si = remix_base_get_instance_data(env, base); | ||
110 | |||
111 | si->rs_ratio = remix_get_samplerate(env) / si->snd_info->samplerate; | ||
112 | si->rs_ratio /= si->speed; | ||
113 | si->resample_len = (si->snd_info->frames * si->rs_ratio); | ||
114 | |||
115 | si->outbuf = malloc(sizeof(RemixPCM) * BLOCK_FRAMES * 2); | ||
116 | if (!si->outbuf) return 0; | ||
117 | if ((si->rs_ratio == 1.0)/* && (si->snd_info->channels == 2)*/) | ||
118 | { | ||
119 | si->enable_resample = 0; | ||
120 | return 1; | ||
121 | } | ||
122 | else | ||
123 | si->enable_resample = 1; | ||
124 | |||
125 | si->in_avail = 0; | ||
126 | si->out_generated = 0; | ||
127 | si->inbuf = malloc(sizeof(RemixPCM) * BLOCK_FRAMES * | ||
128 | si->snd_info->channels); | ||
129 | if (!si->inbuf) return 0; | ||
130 | return 1; | ||
131 | } | ||
132 | |||
133 | static RemixBase * | ||
134 | remix_eet_sndfile_create(RemixEnv *env, RemixBase *sndfile, const char *path, const char *sound_id, const double speed) | ||
135 | { | ||
136 | SF_VIRTUAL_IO *eet_vio = NULL; | ||
137 | SndInstanceData *si; | ||
138 | const void *sound_data; | ||
139 | int sound_size; | ||
140 | |||
141 | if ((!path) || (!sound_id)) return NULL; | ||
142 | |||
143 | si = calloc(1, sizeof(SndInstanceData)); | ||
144 | if (!si) goto err; | ||
145 | remix_base_set_instance_data(env, sndfile, si); | ||
146 | |||
147 | si->path = strdup(path); | ||
148 | si->sound_id = strdup(sound_id); | ||
149 | si->speed = speed; | ||
150 | |||
151 | si->efp = eet_open(path, EET_FILE_MODE_READ); | ||
152 | if (!si->efp) goto err; | ||
153 | |||
154 | // xxx: eet_read_direct does not work on Threads, using eet_read. | ||
155 | sound_data = eet_read(si->efp, sound_id, &(sound_size)); | ||
156 | eet_close(si->efp); | ||
157 | si->efp = NULL; | ||
158 | if (sound_data == NULL) goto err; | ||
159 | |||
160 | eet_vio = calloc(1, sizeof(SF_VIRTUAL_IO)); | ||
161 | if (!eet_vio) goto err; | ||
162 | |||
163 | /* Set up func pointers to read snd file directly from EET. */ | ||
164 | eet_vio->get_filelen = eet_snd_file_get_length; | ||
165 | eet_vio->seek = eet_snd_file_seek; | ||
166 | eet_vio->read = eet_snd_file_read; | ||
167 | eet_vio->tell = eet_snd_file_tell; | ||
168 | |||
169 | si->vio_data = calloc(1, sizeof(VIO_DATA)); | ||
170 | if (!si->vio_data) goto err; | ||
171 | si->vio_data->offset = 0; | ||
172 | si->vio_data->length = sound_size; | ||
173 | si->vio_data->data = sound_data; | ||
174 | |||
175 | si->snd_info = calloc(1, sizeof(SF_INFO)); | ||
176 | if (!si->snd_info) goto err; | ||
177 | |||
178 | si->pcm_fp = sf_open_virtual(eet_vio, SFM_READ, si->snd_info, si->vio_data); | ||
179 | if (!si->pcm_fp) goto err; | ||
180 | free(eet_vio); | ||
181 | eet_vio = NULL; | ||
182 | |||
183 | if (!remix_init_resampler_data(env, sndfile)) goto err; | ||
184 | si->out_generated = 0; | ||
185 | |||
186 | return sndfile; | ||
187 | |||
188 | err: | ||
189 | if (eet_vio) free(eet_vio); | ||
190 | remix_set_error(env, REMIX_ERROR_SYSTEM); | ||
191 | remix_destroy(env, (RemixBase *)sndfile); | ||
192 | return RemixNone; | ||
193 | } | ||
194 | |||
195 | static RemixBase * | ||
196 | remix_eet_sndfile_reader_init(RemixEnv *env, RemixBase *base, CDSet *parameters) | ||
197 | { | ||
198 | char *file_path, *sound_id; | ||
199 | double speed; | ||
200 | |||
201 | file_path = (cd_set_find(env, parameters, PATH_KEY)).s_string; | ||
202 | sound_id = (cd_set_find(env, parameters, SOUND_ID_KEY)).s_string; | ||
203 | speed = (cd_set_find(env, parameters, SPEED_KEY)).s_double; | ||
204 | |||
205 | if (!remix_eet_sndfile_create(env, base, file_path, sound_id, speed)) | ||
206 | return RemixNone; | ||
207 | remix_eet_sndfile_optimise (env, base); | ||
208 | return base; | ||
209 | } | ||
210 | |||
211 | static RemixBase * | ||
212 | remix_eet_sndfile_clone(RemixEnv *env, RemixBase *base) | ||
213 | { | ||
214 | SndInstanceData *si = remix_base_get_instance_data(env, base); | ||
215 | RemixBase *new_sndfile = remix_base_new(env); | ||
216 | |||
217 | remix_eet_sndfile_create(env, new_sndfile, si->path, si->sound_id, si->speed); | ||
218 | remix_eet_sndfile_optimise(env, new_sndfile); | ||
219 | return new_sndfile; | ||
220 | } | ||
221 | |||
222 | static int | ||
223 | remix_eet_sndfile_destroy(RemixEnv *env, RemixBase *base) | ||
224 | { | ||
225 | SndInstanceData *si = remix_base_get_instance_data(env, base); | ||
226 | if (si) | ||
227 | { | ||
228 | sf_close (si->pcm_fp); | ||
229 | eet_close(si->efp); | ||
230 | if (si->path) free(si->path); | ||
231 | if (si->sound_id) free(si->sound_id); | ||
232 | if (si->snd_info) free(si->snd_info); | ||
233 | if (si->efp) eet_close(si->efp); | ||
234 | if (si->inbuf) free(si->inbuf); | ||
235 | if (si->outbuf) free(si->outbuf); | ||
236 | if (si->vio_data) free(si->vio_data); | ||
237 | free(si); | ||
238 | } | ||
239 | if (base) free (base); | ||
240 | return 0; | ||
241 | } | ||
242 | |||
243 | static int | ||
244 | remix_pcm_resample(SndInstanceData *si) | ||
245 | { | ||
246 | RemixPCM *src, *dst, *srcbase; | ||
247 | int i = 0, in_samples, pos, total, chnum, reqsamp, avail; | ||
248 | int interp = 1; | ||
249 | |||
250 | dst = si->outbuf + (si->out_generated * 2); | ||
251 | in_samples = (double)si->required_resamples / si->rs_ratio; | ||
252 | chnum = si->snd_info->channels; | ||
253 | reqsamp = si->required_resamples; | ||
254 | avail = si->in_avail; | ||
255 | srcbase = si->readbuf; | ||
256 | if ((interp) && (si->rs_ratio >= 1.0)) | ||
257 | { | ||
258 | // linear interpolation of resampling for lower quality samples | ||
259 | // so they don't get high requency aliasing effects | ||
260 | for (i = 0; i < reqsamp; i++) | ||
261 | { | ||
262 | float fpos, fpos1; | ||
263 | RemixPCM psam[2]; | ||
264 | |||
265 | fpos = (float)(i * in_samples) / (float)reqsamp; | ||
266 | pos = fpos; | ||
267 | if (pos >= avail) break; | ||
268 | fpos -= pos; | ||
269 | fpos1 = 1.0 - fpos; | ||
270 | src = srcbase + (pos * chnum); | ||
271 | if (chnum == 2) | ||
272 | { | ||
273 | if (pos == 0) | ||
274 | { | ||
275 | psam[0] = si->prevreadbuf[0]; | ||
276 | psam[1] = si->prevreadbuf[1]; | ||
277 | } | ||
278 | else | ||
279 | { | ||
280 | psam[0] = src[0 - 2]; | ||
281 | psam[1] = src[1 - 2]; | ||
282 | } | ||
283 | *dst++ = (src[0] * fpos) + (psam[0] * fpos1); | ||
284 | *dst++ = (src[1] * fpos) + (psam[1] * fpos1); | ||
285 | } | ||
286 | else | ||
287 | { | ||
288 | if (pos == 0) | ||
289 | psam[0] = si->prevreadbuf[0]; | ||
290 | else | ||
291 | psam[0] = src[0 - 1]; | ||
292 | *dst++ = (src[0] * fpos) + (psam[0] * fpos1); | ||
293 | } | ||
294 | } | ||
295 | } | ||
296 | else | ||
297 | { | ||
298 | // simple sample-picking/nearest. faster and simpler | ||
299 | for (i = 0; i < reqsamp; i++) | ||
300 | { | ||
301 | pos = (i * in_samples) / reqsamp; | ||
302 | if (pos >= avail) break; | ||
303 | src = srcbase + (pos * chnum); | ||
304 | if (chnum == 2) | ||
305 | { | ||
306 | *dst++ = src[0]; | ||
307 | *dst++ = src[1]; | ||
308 | } | ||
309 | else | ||
310 | *dst++ = src[0]; | ||
311 | } | ||
312 | } | ||
313 | si->out_generated += i; | ||
314 | total = (i * in_samples) / reqsamp; | ||
315 | si->readbuf += total * chnum; | ||
316 | si->in_avail -= total; | ||
317 | return total; | ||
318 | } | ||
319 | |||
320 | /* An RemixChunkFunc for creating sndfile */ | ||
321 | static RemixCount | ||
322 | remix_eet_sndfile_read_update(RemixEnv *env, RemixBase *sndfile, RemixCount count) | ||
323 | { | ||
324 | SndInstanceData *si = remix_base_get_instance_data(env, sndfile); | ||
325 | |||
326 | si->out_generated = 0; | ||
327 | if (si->enable_resample) | ||
328 | { | ||
329 | RemixCount gen = 0; | ||
330 | |||
331 | while (gen < count) | ||
332 | { | ||
333 | if (si->in_avail <= 0) | ||
334 | { | ||
335 | si->in_avail = sf_readf_float(si->pcm_fp, si->inbuf, BLOCK_FRAMES); | ||
336 | si->readbuf = si->inbuf; | ||
337 | } | ||
338 | si->required_resamples = (count - gen); | ||
339 | remix_pcm_resample(si); | ||
340 | if (si->snd_info->channels == 2) | ||
341 | { | ||
342 | si->prevreadbuf[0] = si->readbuf[-2]; | ||
343 | si->prevreadbuf[1] = si->readbuf[-1]; | ||
344 | } | ||
345 | else | ||
346 | { | ||
347 | si->prevreadbuf[0] = si->readbuf[-1]; | ||
348 | } | ||
349 | gen += si->out_generated; | ||
350 | } | ||
351 | si->out_generated = gen; | ||
352 | } | ||
353 | else | ||
354 | { | ||
355 | si->out_generated = sf_readf_float(si->pcm_fp, si->outbuf, count); | ||
356 | } | ||
357 | return si->out_generated; | ||
358 | } | ||
359 | |||
360 | static RemixCount | ||
361 | remix_eet_sndfile_read_into_chunk(RemixEnv *env, RemixChunk *chunk, RemixCount offset, RemixCount count, int channelname, void *data) | ||
362 | { | ||
363 | RemixBase *sndfile = data; | ||
364 | SndInstanceData *si = remix_base_get_instance_data(env, sndfile); | ||
365 | RemixPCM *d, *p; | ||
366 | RemixCount remaining = count, written = 0, n, i; | ||
367 | |||
368 | d = &chunk->data[offset]; | ||
369 | n = MIN(remaining, BLOCK_FRAMES); | ||
370 | // Need parameter support to advance the data reading | ||
371 | if (channelname == 0) | ||
372 | remix_eet_sndfile_read_update(env, sndfile, n); | ||
373 | n = MIN(si->out_generated, remaining); | ||
374 | p = si->outbuf; | ||
375 | if (si->snd_info->channels > 1) p += channelname; | ||
376 | for (i = 0; i < n; i++) | ||
377 | { | ||
378 | *d++ = *p; | ||
379 | p += si->snd_info->channels; | ||
380 | } | ||
381 | if (n == 0) n = _remix_pcm_set(d, 0.0, remaining); | ||
382 | remaining -= n; | ||
383 | written += n; | ||
384 | return written; | ||
385 | } | ||
386 | |||
387 | static RemixCount | ||
388 | remix_eet_sndfile_reader_process(RemixEnv *env, RemixBase *base, RemixCount count, RemixStream *input __UNUSED__, RemixStream *output) | ||
389 | { | ||
390 | return remix_stream_chunkfuncify(env, output, count, | ||
391 | remix_eet_sndfile_read_into_chunk, | ||
392 | base); | ||
393 | } | ||
394 | |||
395 | static RemixCount | ||
396 | remix_eet_sndfile_length(RemixEnv *env, RemixBase *base) | ||
397 | { | ||
398 | SndInstanceData *si = remix_base_get_instance_data(env, base); | ||
399 | return si->resample_len; | ||
400 | } | ||
401 | |||
402 | static RemixCount | ||
403 | remix_eet_sndfile_seek(RemixEnv *env, RemixBase *base, RemixCount offset) | ||
404 | { | ||
405 | SndInstanceData *si = remix_base_get_instance_data(env, base); | ||
406 | return sf_seek(si->pcm_fp, offset, SEEK_SET); | ||
407 | } | ||
408 | |||
409 | static struct _RemixMethods _remix_eet_sndfile_reader_methods = | ||
410 | { | ||
411 | remix_eet_sndfile_clone, | ||
412 | remix_eet_sndfile_destroy, | ||
413 | NULL, /* ready */ | ||
414 | NULL, /* prepare */ | ||
415 | remix_eet_sndfile_reader_process, | ||
416 | remix_eet_sndfile_length, | ||
417 | remix_eet_sndfile_seek, | ||
418 | NULL, /* flush */ | ||
419 | }; | ||
420 | |||
421 | static RemixBase * | ||
422 | remix_eet_sndfile_optimise(RemixEnv *env, RemixBase *sndfile) | ||
423 | { | ||
424 | remix_base_set_methods(env, sndfile, &_remix_eet_sndfile_reader_methods); | ||
425 | return sndfile; | ||
426 | } | ||
427 | |||
428 | static struct _RemixParameterScheme path_scheme = | ||
429 | { | ||
430 | "path", | ||
431 | "Path to sound file", | ||
432 | REMIX_TYPE_STRING, | ||
433 | REMIX_CONSTRAINT_TYPE_NONE, | ||
434 | {NULL}, | ||
435 | REMIX_HINT_FILENAME, | ||
436 | }; | ||
437 | |||
438 | static struct _RemixParameterScheme sound_id_scheme = | ||
439 | { | ||
440 | "sound_id", | ||
441 | "Sound Id (Key) inside EET", | ||
442 | REMIX_TYPE_STRING, | ||
443 | REMIX_CONSTRAINT_TYPE_NONE, | ||
444 | {NULL}, | ||
445 | REMIX_HINT_DEFAULT, | ||
446 | }; | ||
447 | |||
448 | static struct _RemixParameterScheme speed_scheme = | ||
449 | { | ||
450 | "speed", | ||
451 | "Sound Play Speed", | ||
452 | REMIX_TYPE_FLOAT, | ||
453 | REMIX_CONSTRAINT_TYPE_NONE, | ||
454 | {NULL}, | ||
455 | REMIX_HINT_DEFAULT, | ||
456 | }; | ||
457 | |||
458 | static struct _RemixMetaText eet_sndfile_reader_metatext = | ||
459 | { | ||
460 | "eet_sndfile_reader", | ||
461 | "File:: Sound file Reader from EET", | ||
462 | "Reads PCM audio files from EET bundle using libsndfile", | ||
463 | "Copyright (C) 2011, Samsung Electronics Co., Ltd.", | ||
464 | "http://www.samsung.com", | ||
465 | REMIX_ONE_AUTHOR ("govi.sm@samsung.com", "prince.dubey@samsung.com"), | ||
466 | }; | ||
467 | |||
468 | static struct _RemixPlugin eet_sndfile_reader_plugin = | ||
469 | { | ||
470 | &eet_sndfile_reader_metatext, | ||
471 | REMIX_FLAGS_NONE, | ||
472 | CD_EMPTY_SET, /* init scheme */ | ||
473 | remix_eet_sndfile_reader_init, | ||
474 | CD_EMPTY_SET, /* process scheme */ | ||
475 | NULL, /* suggests */ | ||
476 | NULL, /* plugin data */ | ||
477 | NULL /* destroy */ | ||
478 | }; | ||
479 | |||
480 | EAPI CDList * | ||
481 | remix_load(RemixEnv *env) | ||
482 | { | ||
483 | CDList *plugins = cd_list_new(env); | ||
484 | |||
485 | eet_sndfile_reader_plugin.init_scheme = | ||
486 | cd_set_insert(env, eet_sndfile_reader_plugin.init_scheme, PATH_KEY, | ||
487 | CD_POINTER(&path_scheme)); | ||
488 | eet_sndfile_reader_plugin.init_scheme = | ||
489 | cd_set_insert(env, eet_sndfile_reader_plugin.init_scheme, SOUND_ID_KEY, | ||
490 | CD_POINTER(&sound_id_scheme)); | ||
491 | eet_sndfile_reader_plugin.init_scheme = | ||
492 | cd_set_insert(env, eet_sndfile_reader_plugin.init_scheme, SPEED_KEY, | ||
493 | CD_POINTER(&speed_scheme)); | ||
494 | |||
495 | plugins = cd_list_prepend(env, plugins, | ||
496 | CD_POINTER(&eet_sndfile_reader_plugin)); | ||
497 | return plugins; | ||
498 | } | ||