1 /* GStreamer libsndfile plugin
2 * Copyright (C) 2013 Stefan Sauer <ensonic@users.sf.net>
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with self library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20 #ifdef HAVE_CONFIG_H
21 # include "config.h"
22 #endif
23
24 #include <stdlib.h>
25 #include <gst/gst-i18n-plugin.h>
26 #include <gst/audio/audio.h>
27
28 #include "gstsfelements.h"
29 #include "gstsfdec.h"
30
31 #define FORMATS \
32 "{ "GST_AUDIO_NE (F32)", "GST_AUDIO_NE (S32)", "GST_AUDIO_NE (S16)" }"
33
34 static GstStaticPadTemplate sf_dec_src_factory = GST_STATIC_PAD_TEMPLATE ("src",
35 GST_PAD_SRC,
36 GST_PAD_ALWAYS,
37 GST_STATIC_CAPS ("audio/x-raw, "
38 "format = (string) " FORMATS ", "
39 "layout = (string) interleaved, "
40 "rate = (int) [ 1, MAX ], " "channels = (int) [ 1, MAX ]"));
41
42 GST_DEBUG_CATEGORY_STATIC (gst_sf_dec_debug);
43 #define GST_CAT_DEFAULT gst_sf_dec_debug
44
45 #define DEFAULT_BUFFER_FRAMES (256)
46
47 static gboolean gst_sf_dec_src_event (GstPad * pad, GstObject * parent,
48 GstEvent * event);
49 static gboolean gst_sf_dec_src_query (GstPad * pad, GstObject * parent,
50 GstQuery * query);
51 static GstStateChangeReturn gst_sf_dec_change_state (GstElement * element,
52 GstStateChange transition);
53
54 static gboolean gst_sf_dec_sink_activate (GstPad * pad, GstObject * parent);
55 static gboolean gst_sf_dec_sink_activate_mode (GstPad * sinkpad,
56 GstObject * parent, GstPadMode mode, gboolean active);
57 static void gst_sf_dec_loop (GstPad * pad);
58
59 static gboolean gst_sf_dec_start (GstSFDec * bsrc);
60 static gboolean gst_sf_dec_stop (GstSFDec * bsrc);
61
62 #define _do_init \
63 GST_DEBUG_CATEGORY_INIT (gst_sf_dec_debug, "sfdec", 0, "sfdec element");
64 #define gst_sf_dec_parent_class parent_class
65 G_DEFINE_TYPE_WITH_CODE (GstSFDec, gst_sf_dec, GST_TYPE_ELEMENT, _do_init);
66 GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (sfdec, "sfdec", GST_RANK_MARGINAL,
67 GST_TYPE_SF_DEC, sf_element_init (plugin));
68 /* sf virtual io */
69
70 static sf_count_t
gst_sf_vio_get_filelen(void * user_data)71 gst_sf_vio_get_filelen (void *user_data)
72 {
73 GstSFDec *self = GST_SF_DEC (user_data);
74 gint64 dur;
75
76 if (gst_pad_peer_query_duration (self->sinkpad, GST_FORMAT_BYTES, &dur)) {
77 return (sf_count_t) dur;
78 }
79 GST_WARNING_OBJECT (self, "query_duration failed");
80 return -1;
81 }
82
83 static sf_count_t
gst_sf_vio_tell(void * user_data)84 gst_sf_vio_tell (void *user_data)
85 {
86 GstSFDec *self = GST_SF_DEC (user_data);
87 return self->pos;
88 }
89
90 static sf_count_t
gst_sf_vio_seek(sf_count_t offset,int whence,void * user_data)91 gst_sf_vio_seek (sf_count_t offset, int whence, void *user_data)
92 {
93 GstSFDec *self = GST_SF_DEC (user_data);
94
95 switch (whence) {
96 case SEEK_CUR:
97 self->pos += offset;
98 break;
99 case SEEK_SET:
100 self->pos = offset;
101 break;
102 case SEEK_END:
103 self->pos = gst_sf_vio_get_filelen (user_data) - offset;
104 break;
105 }
106 return (sf_count_t) self->pos;
107 }
108
109 static sf_count_t
gst_sf_vio_read(void * ptr,sf_count_t count,void * user_data)110 gst_sf_vio_read (void *ptr, sf_count_t count, void *user_data)
111 {
112 GstSFDec *self = GST_SF_DEC (user_data);
113 GstBuffer *buffer = gst_buffer_new_wrapped_full (0, ptr, count, 0, count,
114 ptr, NULL);
115
116 if (gst_pad_pull_range (self->sinkpad, self->pos, count, &buffer) ==
117 GST_FLOW_OK) {
118 GST_DEBUG_OBJECT (self, "read %d bytes @ pos %" G_GUINT64_FORMAT,
119 (gint) count, self->pos);
120 self->pos += count;
121 return count;
122 }
123 GST_WARNING_OBJECT (self, "read failed");
124 return 0;
125 }
126
127 static sf_count_t
gst_sf_vio_write(const void * ptr,sf_count_t count,void * user_data)128 gst_sf_vio_write (const void *ptr, sf_count_t count, void *user_data)
129 {
130 GstSFDec *self = GST_SF_DEC (user_data);
131 GstBuffer *buffer = gst_buffer_new_memdup (ptr, count);
132
133 if (gst_pad_push (self->srcpad, buffer) == GST_FLOW_OK) {
134 return count;
135 }
136 GST_WARNING_OBJECT (self, "write failed");
137 return 0;
138 }
139
140 SF_VIRTUAL_IO gst_sf_vio = {
141 &gst_sf_vio_get_filelen,
142 &gst_sf_vio_seek,
143 &gst_sf_vio_read,
144 &gst_sf_vio_write,
145 &gst_sf_vio_tell,
146 };
147
148
149 static void
gst_sf_dec_class_init(GstSFDecClass * klass)150 gst_sf_dec_class_init (GstSFDecClass * klass)
151 {
152 GstElementClass *gstelement_class;
153
154 gstelement_class = GST_ELEMENT_CLASS (klass);
155 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_sf_dec_change_state);
156
157 gst_element_class_set_static_metadata (gstelement_class, "Sndfile decoder",
158 "Decoder/Audio",
159 "Read audio streams using libsndfile",
160 "Stefan Sauer <ensonic@user.sf.net>");
161
162 gst_element_class_add_static_pad_template (gstelement_class,
163 &sf_dec_src_factory);
164
165 gst_element_class_add_pad_template (gstelement_class,
166 gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
167 gst_sf_create_audio_template_caps ()));
168
169 }
170
171 static void
gst_sf_dec_init(GstSFDec * self)172 gst_sf_dec_init (GstSFDec * self)
173 {
174 self->sinkpad = gst_pad_new_from_template (gst_element_class_get_pad_template
175 (GST_ELEMENT_GET_CLASS (self), "sink"), "sink");
176 gst_pad_set_activate_function (self->sinkpad,
177 GST_DEBUG_FUNCPTR (gst_sf_dec_sink_activate));
178 gst_pad_set_activatemode_function (self->sinkpad,
179 GST_DEBUG_FUNCPTR (gst_sf_dec_sink_activate_mode));
180 gst_element_add_pad (GST_ELEMENT (self), self->sinkpad);
181
182 self->srcpad = gst_pad_new_from_static_template (&sf_dec_src_factory, "src");
183 gst_pad_set_event_function (self->srcpad,
184 GST_DEBUG_FUNCPTR (gst_sf_dec_src_event));
185 gst_pad_set_query_function (self->srcpad,
186 GST_DEBUG_FUNCPTR (gst_sf_dec_src_query));
187 gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
188 }
189
190 static gboolean
gst_sf_dec_do_seek(GstSFDec * self,GstEvent * event)191 gst_sf_dec_do_seek (GstSFDec * self, GstEvent * event)
192 {
193 gdouble rate;
194 GstFormat format;
195 GstSeekFlags flags;
196 GstSeekType cur_type, stop_type;
197 gboolean flush;
198 gint64 cur, stop, pos;
199 GstSegment seg;
200 guint64 song_length = gst_util_uint64_scale_int (self->duration, GST_SECOND,
201 self->rate);
202
203 gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur,
204 &stop_type, &stop);
205
206 if (format != GST_FORMAT_TIME)
207 goto unsupported_format;
208
209 /* FIXME: we should be using GstSegment for all this */
210 if (cur_type != GST_SEEK_TYPE_SET || stop_type != GST_SEEK_TYPE_NONE)
211 goto unsupported_type;
212
213 if (stop_type == GST_SEEK_TYPE_NONE)
214 stop = GST_CLOCK_TIME_NONE;
215 if (!GST_CLOCK_TIME_IS_VALID (stop) && song_length > 0)
216 stop = song_length;
217
218 cur = CLAMP (cur, -1, song_length);
219
220 /* cur -> pos */
221 pos = gst_util_uint64_scale_int (cur, self->rate, GST_SECOND);
222 if ((pos = sf_seek (self->file, pos, SEEK_SET) == -1))
223 goto seek_failed;
224
225 /* pos -> cur */
226 cur = gst_util_uint64_scale_int (pos, GST_SECOND, self->rate);
227
228 GST_DEBUG_OBJECT (self, "seek to %" GST_TIME_FORMAT,
229 GST_TIME_ARGS ((guint64) cur));
230
231 flush = ((flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH);
232
233 if (flush) {
234 gst_pad_push_event (self->srcpad, gst_event_new_flush_start ());
235 } else {
236 gst_pad_stop_task (self->sinkpad);
237 }
238
239 GST_PAD_STREAM_LOCK (self->sinkpad);
240
241 if (flags & GST_SEEK_FLAG_SEGMENT) {
242 gst_element_post_message (GST_ELEMENT (self),
243 gst_message_new_segment_start (GST_OBJECT (self), format, cur));
244 }
245
246 if (flush) {
247 gst_pad_push_event (self->srcpad, gst_event_new_flush_stop (TRUE));
248 }
249
250 GST_LOG_OBJECT (self, "sending newsegment from %" GST_TIME_FORMAT "-%"
251 GST_TIME_FORMAT ", pos=%" GST_TIME_FORMAT,
252 GST_TIME_ARGS ((guint64) cur), GST_TIME_ARGS ((guint64) stop),
253 GST_TIME_ARGS ((guint64) cur));
254
255 gst_segment_init (&seg, GST_FORMAT_TIME);
256 seg.rate = rate;
257 seg.start = cur;
258 seg.stop = stop;
259 seg.time = cur;
260 gst_pad_push_event (self->srcpad, gst_event_new_segment (&seg));
261
262 gst_pad_start_task (self->sinkpad,
263 (GstTaskFunction) gst_sf_dec_loop, self, NULL);
264
265 GST_PAD_STREAM_UNLOCK (self->sinkpad);
266
267 return TRUE;
268
269 /* ERROR */
270 unsupported_format:
271 {
272 GST_DEBUG_OBJECT (self, "seeking is only supported in TIME format");
273 return FALSE;
274 }
275 unsupported_type:
276 {
277 GST_DEBUG_OBJECT (self, "unsupported seek type");
278 return FALSE;
279 }
280 seek_failed:
281 {
282 GST_DEBUG_OBJECT (self, "seek failed");
283 return FALSE;
284 }
285 }
286
287 static gboolean
gst_sf_dec_src_event(GstPad * pad,GstObject * parent,GstEvent * event)288 gst_sf_dec_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
289 {
290 GstSFDec *self = GST_SF_DEC (parent);
291 gboolean res = FALSE;
292
293 GST_DEBUG_OBJECT (self, "event %s, %" GST_PTR_FORMAT,
294 GST_EVENT_TYPE_NAME (event), event);
295
296 switch (GST_EVENT_TYPE (event)) {
297 case GST_EVENT_SEEK:
298 if (!self->file || !self->seekable)
299 goto done;
300 res = gst_sf_dec_do_seek (self, event);
301 break;
302 default:
303 res = gst_pad_event_default (pad, parent, event);
304 break;
305 }
306 done:
307 GST_DEBUG_OBJECT (self, "event %s: %d", GST_EVENT_TYPE_NAME (event), res);
308 return res;
309 }
310
311 static gboolean
gst_sf_dec_src_query(GstPad * pad,GstObject * parent,GstQuery * query)312 gst_sf_dec_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
313 {
314 GstSFDec *self = GST_SF_DEC (parent);
315 GstFormat format;
316 gboolean res = FALSE;
317
318 GST_DEBUG_OBJECT (self, "query %s, %" GST_PTR_FORMAT,
319 GST_QUERY_TYPE_NAME (query), query);
320
321 switch (GST_QUERY_TYPE (query)) {
322 case GST_QUERY_DURATION:
323 if (!self->file)
324 goto done;
325 gst_query_parse_duration (query, &format, NULL);
326 if (format == GST_FORMAT_TIME) {
327 gst_query_set_duration (query, format,
328 gst_util_uint64_scale_int (self->duration, GST_SECOND, self->rate));
329 res = TRUE;
330 }
331 break;
332 case GST_QUERY_POSITION:
333 if (!self->file)
334 goto done;
335 gst_query_parse_position (query, &format, NULL);
336 if (format == GST_FORMAT_TIME) {
337 gst_query_set_position (query, format,
338 gst_util_uint64_scale_int (self->pos, GST_SECOND, self->rate));
339 res = TRUE;
340 }
341 break;
342 default:
343 res = gst_pad_query_default (pad, parent, query);
344 break;
345 }
346
347 done:
348 GST_DEBUG_OBJECT (self, "query %s: %d", GST_QUERY_TYPE_NAME (query), res);
349 return res;
350 }
351
352 static GstStateChangeReturn
gst_sf_dec_change_state(GstElement * element,GstStateChange transition)353 gst_sf_dec_change_state (GstElement * element, GstStateChange transition)
354 {
355 GstStateChangeReturn ret;
356 GstSFDec *self = GST_SF_DEC (element);
357
358 GST_INFO_OBJECT (self, "transition: %s -> %s",
359 gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
360 gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
361
362 switch (transition) {
363 case GST_STATE_CHANGE_READY_TO_PAUSED:
364 gst_sf_dec_start (self);
365 break;
366 default:
367 break;
368 }
369
370 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
371
372 switch (transition) {
373 case GST_STATE_CHANGE_PAUSED_TO_READY:
374 gst_sf_dec_stop (self);
375 break;
376 default:
377 break;
378 }
379 return ret;
380 }
381
382 static gboolean
gst_sf_dec_start(GstSFDec * self)383 gst_sf_dec_start (GstSFDec * self)
384 {
385 return TRUE;
386 }
387
388 static gboolean
gst_sf_dec_stop(GstSFDec * self)389 gst_sf_dec_stop (GstSFDec * self)
390 {
391 int err = 0;
392
393 GST_INFO_OBJECT (self, "Closing sndfile stream");
394
395 if (self->file && (err = sf_close (self->file)))
396 goto close_failed;
397
398 self->file = NULL;
399 self->offset = 0;
400 self->channels = 0;
401 self->rate = 0;
402
403 self->pos = 0;
404 self->duration = 0;
405
406 return TRUE;
407
408 close_failed:
409 {
410 GST_ELEMENT_ERROR (self, RESOURCE, CLOSE,
411 ("Could not close sndfile stream."),
412 ("soundfile error: %s", sf_error_number (err)));
413 return FALSE;
414 }
415 }
416
417 static gboolean
gst_sf_dec_sink_activate(GstPad * sinkpad,GstObject * parent)418 gst_sf_dec_sink_activate (GstPad * sinkpad, GstObject * parent)
419 {
420 GstQuery *query;
421 gboolean pull_mode;
422
423 query = gst_query_new_scheduling ();
424
425 if (!gst_pad_peer_query (sinkpad, query)) {
426 gst_query_unref (query);
427 goto activate_push;
428 }
429
430 pull_mode = gst_query_has_scheduling_mode_with_flags (query,
431 GST_PAD_MODE_PULL, GST_SCHEDULING_FLAG_SEEKABLE);
432 gst_query_unref (query);
433
434 if (!pull_mode)
435 goto activate_push;
436
437 GST_DEBUG_OBJECT (sinkpad, "activating pull");
438 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, TRUE);
439
440 activate_push:
441 {
442 GST_DEBUG_OBJECT (sinkpad, "activating push");
443 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
444 }
445 }
446
447 static gboolean
gst_sf_dec_sink_activate_mode(GstPad * sinkpad,GstObject * parent,GstPadMode mode,gboolean active)448 gst_sf_dec_sink_activate_mode (GstPad * sinkpad, GstObject * parent,
449 GstPadMode mode, gboolean active)
450 {
451 gboolean res;
452
453 switch (mode) {
454 case GST_PAD_MODE_PUSH:
455 res = FALSE; /* no push support */
456 break;
457 case GST_PAD_MODE_PULL:
458 if (active) {
459 /* if we have a scheduler we can start the task */
460 GST_DEBUG_OBJECT (sinkpad, "start task");
461 res = gst_pad_start_task (sinkpad, (GstTaskFunction) gst_sf_dec_loop,
462 sinkpad, NULL);
463 } else {
464 res = gst_pad_stop_task (sinkpad);
465 }
466 break;
467 default:
468 res = FALSE;
469 break;
470 }
471 return res;
472 }
473
474 static void
create_and_send_tags(GstSFDec * self,SF_INFO * info,SF_LOOP_INFO * loop_info,SF_INSTRUMENT * instrument)475 create_and_send_tags (GstSFDec * self, SF_INFO * info, SF_LOOP_INFO * loop_info,
476 SF_INSTRUMENT * instrument)
477 {
478 GstTagList *tags;
479 const gchar *tag;
480 const gchar *codec_name;
481
482 /* send tags */
483 tags = gst_tag_list_new_empty ();
484 if ((tag = sf_get_string (self->file, SF_STR_TITLE)) && *tag) {
485 gst_tag_list_add (tags, GST_TAG_MERGE_APPEND, GST_TAG_TITLE, tag, NULL);
486 }
487 if ((tag = sf_get_string (self->file, SF_STR_COMMENT)) && *tag) {
488 gst_tag_list_add (tags, GST_TAG_MERGE_APPEND, GST_TAG_COMMENT, tag, NULL);
489 }
490 if ((tag = sf_get_string (self->file, SF_STR_ARTIST)) && *tag) {
491 gst_tag_list_add (tags, GST_TAG_MERGE_APPEND, GST_TAG_ARTIST, tag, NULL);
492 }
493 if ((tag = sf_get_string (self->file, SF_STR_ALBUM)) && *tag) {
494 gst_tag_list_add (tags, GST_TAG_MERGE_APPEND, GST_TAG_ALBUM, tag, NULL);
495 }
496 if ((tag = sf_get_string (self->file, SF_STR_GENRE)) && *tag) {
497 gst_tag_list_add (tags, GST_TAG_MERGE_APPEND, GST_TAG_GENRE, tag, NULL);
498 }
499 if ((tag = sf_get_string (self->file, SF_STR_COPYRIGHT)) && *tag) {
500 gst_tag_list_add (tags, GST_TAG_MERGE_APPEND, GST_TAG_COPYRIGHT, tag, NULL);
501 }
502 if ((tag = sf_get_string (self->file, SF_STR_LICENSE)) && *tag) {
503 gst_tag_list_add (tags, GST_TAG_MERGE_APPEND, GST_TAG_LICENSE, tag, NULL);
504 }
505 if ((tag = sf_get_string (self->file, SF_STR_SOFTWARE)) && *tag) {
506 gst_tag_list_add (tags, GST_TAG_MERGE_APPEND, GST_TAG_APPLICATION_NAME, tag,
507 NULL);
508 }
509 if ((tag = sf_get_string (self->file, SF_STR_TRACKNUMBER)) && *tag) {
510 guint track = atoi (tag);
511 gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_TRACK_NUMBER, track,
512 NULL);
513 }
514 if ((tag = sf_get_string (self->file, SF_STR_DATE)) && *tag) {
515 GValue tag_val = { 0, };
516 GType tag_type = gst_tag_get_type (GST_TAG_DATE_TIME);
517
518 g_value_init (&tag_val, tag_type);
519 if (gst_value_deserialize (&tag_val, tag)) {
520 gst_tag_list_add_value (tags, GST_TAG_MERGE_APPEND, GST_TAG_DATE_TIME,
521 &tag_val);
522 } else {
523 GST_WARNING_OBJECT (self, "could not deserialize '%s' into a "
524 "tag %s of type %s", tag, GST_TAG_DATE_TIME, g_type_name (tag_type));
525 }
526 g_value_unset (&tag_val);
527 }
528 if (loop_info) {
529 if (loop_info->bpm != 0.0) {
530 gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_BEATS_PER_MINUTE,
531 (gdouble) loop_info->bpm, NULL);
532 }
533 if (loop_info->root_key != -1) {
534 gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_MIDI_BASE_NOTE,
535 (guint) loop_info->root_key, NULL);
536 }
537 }
538 if (instrument) {
539 gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_MIDI_BASE_NOTE,
540 (guint) instrument->basenote, NULL);
541 }
542 /* TODO: calculate bitrate: GST_TAG_BITRATE */
543 switch (info->format & SF_FORMAT_SUBMASK) {
544 case SF_FORMAT_PCM_S8:
545 case SF_FORMAT_PCM_16:
546 case SF_FORMAT_PCM_24:
547 case SF_FORMAT_PCM_32:
548 case SF_FORMAT_PCM_U8:
549 codec_name = "Uncompressed PCM audio";
550 break;
551 case SF_FORMAT_FLOAT:
552 case SF_FORMAT_DOUBLE:
553 codec_name = "Uncompressed IEEE float audio";
554 break;
555 case SF_FORMAT_ULAW:
556 codec_name = "µ-law audio";
557 break;
558 case SF_FORMAT_ALAW:
559 codec_name = "A-law audio";
560 break;
561 case SF_FORMAT_IMA_ADPCM:
562 case SF_FORMAT_MS_ADPCM:
563 case SF_FORMAT_VOX_ADPCM:
564 case SF_FORMAT_G721_32:
565 case SF_FORMAT_G723_24:
566 case SF_FORMAT_G723_40:
567 codec_name = "ADPCM audio";
568 break;
569 case SF_FORMAT_GSM610:
570 codec_name = "MS GSM audio";
571 break;
572 case SF_FORMAT_DWVW_12:
573 case SF_FORMAT_DWVW_16:
574 case SF_FORMAT_DWVW_24:
575 case SF_FORMAT_DWVW_N:
576 codec_name = "Delta Width Variable Word encoded audio";
577 break;
578 case SF_FORMAT_DPCM_8:
579 case SF_FORMAT_DPCM_16:
580 codec_name = "differential PCM audio";
581 break;
582 case SF_FORMAT_VORBIS:
583 codec_name = "Vorbis";
584 break;
585 default:
586 codec_name = NULL;
587 GST_WARNING_OBJECT (self, "unmapped codec_type: %d",
588 info->format & SF_FORMAT_SUBMASK);
589 break;
590 }
591 if (codec_name) {
592 gst_tag_list_add (tags, GST_TAG_MERGE_APPEND, GST_TAG_AUDIO_CODEC,
593 codec_name, NULL);
594 }
595
596 if (!gst_tag_list_is_empty (tags)) {
597 GST_DEBUG_OBJECT (self, "have tags");
598 gst_pad_push_event (self->srcpad, gst_event_new_tag (tags));
599 } else {
600 gst_tag_list_unref (tags);
601 }
602 }
603
604 static gboolean
is_valid_loop(gint mode,guint start,guint end)605 is_valid_loop (gint mode, guint start, guint end)
606 {
607 if (!end)
608 return FALSE;
609 if (start >= end)
610 return FALSE;
611 if (!mode)
612 return FALSE;
613
614 return TRUE;
615 }
616
617 static void
create_and_send_toc(GstSFDec * self,SF_INFO * info,SF_LOOP_INFO * loop_info,SF_INSTRUMENT * instrument)618 create_and_send_toc (GstSFDec * self, SF_INFO * info, SF_LOOP_INFO * loop_info,
619 SF_INSTRUMENT * instrument)
620 {
621 GstToc *toc;
622 GstTocEntry *entry = NULL, *subentry = NULL;
623 gint64 start, stop;
624 gchar *id;
625 gint i;
626 gboolean have_loops = FALSE;
627
628 if (!instrument)
629 return;
630
631 for (i = 0; i < 16; i++) {
632 if (is_valid_loop (instrument->loops[i].mode, instrument->loops[i].start,
633 instrument->loops[i].end)) {
634 have_loops = TRUE;
635 break;
636 }
637 }
638 if (!have_loops) {
639 GST_INFO_OBJECT (self, "Have no loops");
640 return;
641 }
642
643
644 toc = gst_toc_new (GST_TOC_SCOPE_GLOBAL);
645 GST_DEBUG_OBJECT (self, "have toc");
646
647 /* add cue edition */
648 entry = gst_toc_entry_new (GST_TOC_ENTRY_TYPE_EDITION, "loops");
649 stop = gst_util_uint64_scale_int (self->duration, GST_SECOND, self->rate);
650 gst_toc_entry_set_start_stop_times (entry, 0, stop);
651 gst_toc_append_entry (toc, entry);
652
653 for (i = 0; i < 16; i++) {
654 GST_DEBUG_OBJECT (self,
655 "loop[%2d]: mode=%d, start=%u, end=%u, count=%u", i,
656 instrument->loops[i].mode, instrument->loops[i].start,
657 instrument->loops[i].end, instrument->loops[i].count);
658 if (is_valid_loop (instrument->loops[i].mode, instrument->loops[i].start,
659 instrument->loops[i].end)) {
660 id = g_strdup_printf ("%08x", i);
661 subentry = gst_toc_entry_new (GST_TOC_ENTRY_TYPE_CHAPTER, id);
662 g_free (id);
663 start = gst_util_uint64_scale_int (instrument->loops[i].start,
664 GST_SECOND, self->rate);
665 stop = gst_util_uint64_scale_int (instrument->loops[i].end,
666 GST_SECOND, self->rate);
667 gst_toc_entry_set_start_stop_times (subentry, start, stop);
668 gst_toc_entry_append_sub_entry (entry, subentry);
669 }
670 }
671
672 gst_pad_push_event (self->srcpad, gst_event_new_toc (toc, FALSE));
673 }
674
675 static gboolean
gst_sf_dec_open_file(GstSFDec * self)676 gst_sf_dec_open_file (GstSFDec * self)
677 {
678 SF_INFO info = { 0, };
679 SF_LOOP_INFO loop_info = { 0, };
680 SF_INSTRUMENT instrument = { 0, };
681 GstCaps *caps;
682 GstStructure *s;
683 GstSegment seg;
684 gint width;
685 const gchar *format;
686 gchar *stream_id;
687 gboolean have_loop_info = FALSE;
688 gboolean have_instrument = FALSE;
689
690 GST_DEBUG_OBJECT (self, "opening the stream");
691 if (!(self->file = sf_open_virtual (&gst_sf_vio, SFM_READ, &info, self)))
692 goto open_failed;
693
694 stream_id =
695 gst_pad_create_stream_id (self->srcpad, GST_ELEMENT_CAST (self), NULL);
696 gst_pad_push_event (self->srcpad, gst_event_new_stream_start (stream_id));
697 g_free (stream_id);
698
699 self->channels = info.channels;
700 self->rate = info.samplerate;
701 self->duration = info.frames;
702 self->seekable = info.seekable;
703 GST_DEBUG_OBJECT (self, "stream openend: channels=%d, rate=%d, seekable=%d",
704 info.channels, info.samplerate, info.seekable);
705
706 /* negotiate srcpad caps */
707 if ((caps = gst_pad_get_allowed_caps (self->srcpad)) == NULL) {
708 caps = gst_pad_get_pad_template_caps (self->srcpad);
709 }
710 caps = gst_caps_make_writable (caps);
711 GST_DEBUG_OBJECT (self, "allowed caps %" GST_PTR_FORMAT, caps);
712
713 s = gst_caps_get_structure (caps, 0);
714 gst_structure_set (s,
715 "channels", G_TYPE_INT, self->channels,
716 "rate", G_TYPE_INT, self->rate, NULL);
717
718 if (!gst_structure_fixate_field_string (s, "format", GST_AUDIO_NE (S16)))
719 GST_WARNING_OBJECT (self, "Failed to fixate format to S16NE");
720
721 caps = gst_caps_fixate (caps);
722
723 GST_DEBUG_OBJECT (self, "fixated caps %" GST_PTR_FORMAT, caps);
724
725 /* configure to output the negotiated format */
726 s = gst_caps_get_structure (caps, 0);
727 format = gst_structure_get_string (s, "format");
728 if (g_str_equal (format, GST_AUDIO_NE (S32))) {
729 self->reader = (GstSFReader) sf_readf_int;
730 width = 32;
731 } else if (g_str_equal (format, GST_AUDIO_NE (S16))) {
732 self->reader = (GstSFReader) sf_readf_short;
733 width = 16;
734 } else {
735 self->reader = (GstSFReader) sf_readf_float;
736 width = 32;
737 }
738 self->bytes_per_frame = width * self->channels / 8;
739
740 gst_pad_set_caps (self->srcpad, caps);
741 gst_caps_unref (caps);
742
743 /* push initial segment */
744 gst_segment_init (&seg, GST_FORMAT_TIME);
745 seg.stop = gst_util_uint64_scale_int (self->duration, GST_SECOND, self->rate);
746 gst_pad_push_event (self->srcpad, gst_event_new_segment (&seg));
747
748 /* get extra details */
749 if (sf_command (self->file, SFC_GET_LOOP_INFO, &loop_info,
750 sizeof (loop_info))) {
751 GST_DEBUG_OBJECT (self, "have loop info");
752 have_loop_info = TRUE;
753 }
754 if (sf_command (self->file, SFC_GET_INSTRUMENT, &instrument,
755 sizeof (instrument))) {
756 GST_DEBUG_OBJECT (self, "have instrument");
757 have_instrument = TRUE;
758 }
759
760 create_and_send_tags (self, &info, (have_loop_info ? &loop_info : NULL),
761 (have_instrument ? &instrument : NULL));
762
763 create_and_send_toc (self, &info, (have_loop_info ? &loop_info : NULL),
764 (have_instrument ? &instrument : NULL));
765
766 return TRUE;
767
768 open_failed:
769 {
770 GST_ELEMENT_ERROR (self, RESOURCE, OPEN_READ,
771 (_("Could not open sndfile stream for reading.")),
772 ("soundfile error: %s", sf_strerror (NULL)));
773 return FALSE;
774 }
775 }
776
777 static void
gst_sf_dec_loop(GstPad * pad)778 gst_sf_dec_loop (GstPad * pad)
779 {
780 GstSFDec *self = GST_SF_DEC (GST_PAD_PARENT (pad));
781 GstBuffer *buf;
782 GstMapInfo map;
783 GstFlowReturn flow;
784 sf_count_t frames_read;
785 guint num_frames = 1024; /* arbitrary */
786
787 if (G_UNLIKELY (!self->file)) {
788 /* not started yet */
789 if (!gst_sf_dec_open_file (self))
790 goto pause;
791 }
792
793 buf = gst_buffer_new_and_alloc (self->bytes_per_frame * num_frames);
794 gst_buffer_map (buf, &map, GST_MAP_WRITE);
795 frames_read = self->reader (self->file, map.data, num_frames);
796 GST_LOG_OBJECT (self, "read %d / %d bytes = %d frames of audio",
797 (gint) frames_read, (gint) map.size, num_frames);
798 gst_buffer_unmap (buf, &map);
799
800 if (G_UNLIKELY (frames_read < 0))
801 goto could_not_read;
802
803 if (G_UNLIKELY (frames_read == 0))
804 goto eos;
805
806 GST_BUFFER_OFFSET (buf) = self->offset;
807 GST_BUFFER_TIMESTAMP (buf) = gst_util_uint64_scale_int (self->offset,
808 GST_SECOND, self->rate);
809 self->offset += frames_read;
810 GST_BUFFER_DURATION (buf) = gst_util_uint64_scale_int (self->offset,
811 GST_SECOND, self->rate) - GST_BUFFER_TIMESTAMP (buf);
812
813 flow = gst_pad_push (self->srcpad, buf);
814 if (flow != GST_FLOW_OK) {
815 GST_LOG_OBJECT (self, "pad push flow: %s", gst_flow_get_name (flow));
816 goto pause;
817 }
818
819 return;
820
821 /* ERROR */
822 could_not_read:
823 {
824 GST_ELEMENT_ERROR (self, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
825 gst_buffer_unref (buf);
826 goto pause;
827 }
828 eos:
829 {
830 GST_DEBUG_OBJECT (self, "EOS");
831 gst_buffer_unref (buf);
832 gst_pad_push_event (self->srcpad, gst_event_new_eos ());
833 goto pause;
834 }
835 pause:
836 {
837 GST_INFO_OBJECT (self, "Pausing");
838 gst_pad_pause_task (self->sinkpad);
839 }
840 }
841