|
1 /* GStreamer |
|
2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> |
|
3 * Copyright (C) <2006> Tim-Philipp Müller <tim centricular net> |
|
4 * |
|
5 * This library is free software; you can redistribute it and/or |
|
6 * modify it under the terms of the GNU Library General Public |
|
7 * License as published by the Free Software Foundation; either |
|
8 * version 2 of the License, or (at your option) any later version. |
|
9 * |
|
10 * This library is distributed in the hope that it will be useful, |
|
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
13 * Library General Public License for more details. |
|
14 * |
|
15 * You should have received a copy of the GNU Library General Public |
|
16 * License along with this library; if not, write to the |
|
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
|
18 * Boston, MA 02111-1307, USA. |
|
19 */ |
|
20 |
|
21 /** |
|
22 * SECTION:element-auparse |
|
23 * |
|
24 * Parses .au files mostly originating from sun os based computers. |
|
25 */ |
|
26 |
|
27 #ifdef HAVE_CONFIG_H |
|
28 #include "config.h" |
|
29 #endif |
|
30 |
|
31 #include <stdlib.h> |
|
32 #include <string.h> |
|
33 |
|
34 #include "gstauparse.h" |
|
35 #include <gst/audio/audio.h> |
|
36 |
|
37 GST_DEBUG_CATEGORY_STATIC (auparse_debug); |
|
38 #define GST_CAT_DEFAULT (auparse_debug) |
|
39 |
|
40 static const GstElementDetails gst_au_parse_details = |
|
41 GST_ELEMENT_DETAILS ("AU audio demuxer", |
|
42 "Codec/Demuxer/Audio", |
|
43 "Parse an .au file into raw audio", |
|
44 "Erik Walthinsen <omega@cse.ogi.edu>"); |
|
45 |
|
46 static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", |
|
47 GST_PAD_SINK, |
|
48 GST_PAD_ALWAYS, |
|
49 GST_STATIC_CAPS ("audio/x-au") |
|
50 ); |
|
51 |
|
52 #define GST_AU_PARSE_ALAW_PAD_TEMPLATE_CAPS \ |
|
53 "audio/x-alaw, " \ |
|
54 "rate = (int) [ 8000, 192000 ], " \ |
|
55 "channels = (int) [ 1, 2 ]" |
|
56 |
|
57 #define GST_AU_PARSE_MULAW_PAD_TEMPLATE_CAPS \ |
|
58 "audio/x-mulaw, " \ |
|
59 "rate = (int) [ 8000, 192000 ], " \ |
|
60 "channels = (int) [ 1, 2 ]" |
|
61 |
|
62 /* Nothing to decode those ADPCM streams for now */ |
|
63 #define GST_AU_PARSE_ADPCM_PAD_TEMPLATE_CAPS \ |
|
64 "audio/x-adpcm, " \ |
|
65 "layout = (string) { g721, g722, g723_3, g723_5 }" |
|
66 |
|
67 static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src", |
|
68 GST_PAD_SRC, |
|
69 GST_PAD_SOMETIMES, |
|
70 GST_STATIC_CAPS (GST_AUDIO_INT_PAD_TEMPLATE_CAPS "; " |
|
71 GST_AUDIO_FLOAT_PAD_TEMPLATE_CAPS ";" |
|
72 GST_AU_PARSE_ALAW_PAD_TEMPLATE_CAPS ";" |
|
73 GST_AU_PARSE_MULAW_PAD_TEMPLATE_CAPS ";" |
|
74 GST_AU_PARSE_ADPCM_PAD_TEMPLATE_CAPS)); |
|
75 |
|
76 |
|
77 static void gst_au_parse_dispose (GObject * object); |
|
78 static GstFlowReturn gst_au_parse_chain (GstPad * pad, GstBuffer * buf); |
|
79 static GstStateChangeReturn gst_au_parse_change_state (GstElement * element, |
|
80 GstStateChange transition); |
|
81 static void gst_au_parse_reset (GstAuParse * auparse); |
|
82 static gboolean gst_au_parse_remove_srcpad (GstAuParse * auparse); |
|
83 static gboolean gst_au_parse_add_srcpad (GstAuParse * auparse, GstCaps * caps); |
|
84 static gboolean gst_au_parse_src_query (GstPad * pad, GstQuery * query); |
|
85 static gboolean gst_au_parse_src_event (GstPad * pad, GstEvent * event); |
|
86 static gboolean gst_au_parse_sink_event (GstPad * pad, GstEvent * event); |
|
87 |
|
88 GST_BOILERPLATE (GstAuParse, gst_au_parse, GstElement, GST_TYPE_ELEMENT); |
|
89 |
|
90 static void |
|
91 gst_au_parse_base_init (gpointer g_class) |
|
92 { |
|
93 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); |
|
94 |
|
95 gst_element_class_add_pad_template (element_class, |
|
96 gst_static_pad_template_get (&sink_template)); |
|
97 gst_element_class_add_pad_template (element_class, |
|
98 gst_static_pad_template_get (&src_template)); |
|
99 gst_element_class_set_details (element_class, &gst_au_parse_details); |
|
100 |
|
101 GST_DEBUG_CATEGORY_INIT (auparse_debug, "auparse", 0, ".au parser"); |
|
102 } |
|
103 |
|
104 static void |
|
105 gst_au_parse_class_init (GstAuParseClass * klass) |
|
106 { |
|
107 GObjectClass *gobject_class; |
|
108 GstElementClass *gstelement_class; |
|
109 |
|
110 gobject_class = (GObjectClass *) klass; |
|
111 gstelement_class = (GstElementClass *) klass; |
|
112 |
|
113 gobject_class->dispose = gst_au_parse_dispose; |
|
114 |
|
115 gstelement_class->change_state = |
|
116 GST_DEBUG_FUNCPTR (gst_au_parse_change_state); |
|
117 } |
|
118 |
|
119 static void |
|
120 gst_au_parse_init (GstAuParse * auparse, GstAuParseClass * klass) |
|
121 { |
|
122 auparse->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink"); |
|
123 gst_pad_set_chain_function (auparse->sinkpad, |
|
124 GST_DEBUG_FUNCPTR (gst_au_parse_chain)); |
|
125 gst_pad_set_event_function (auparse->sinkpad, |
|
126 GST_DEBUG_FUNCPTR (gst_au_parse_sink_event)); |
|
127 gst_element_add_pad (GST_ELEMENT (auparse), auparse->sinkpad); |
|
128 |
|
129 auparse->srcpad = NULL; |
|
130 auparse->adapter = gst_adapter_new (); |
|
131 gst_au_parse_reset (auparse); |
|
132 } |
|
133 |
|
134 static void |
|
135 gst_au_parse_dispose (GObject * object) |
|
136 { |
|
137 GstAuParse *au = GST_AU_PARSE (object); |
|
138 |
|
139 if (au->adapter != NULL) { |
|
140 g_object_unref (au->adapter); |
|
141 au->adapter = NULL; |
|
142 } |
|
143 G_OBJECT_CLASS (parent_class)->dispose (object); |
|
144 } |
|
145 |
|
146 static void |
|
147 gst_au_parse_reset (GstAuParse * auparse) |
|
148 { |
|
149 gst_au_parse_remove_srcpad (auparse); |
|
150 |
|
151 auparse->offset = 0; |
|
152 auparse->buffer_offset = 0; |
|
153 auparse->encoding = 0; |
|
154 auparse->samplerate = 0; |
|
155 auparse->channels = 0; |
|
156 |
|
157 gst_adapter_clear (auparse->adapter); |
|
158 |
|
159 /* gst_segment_init (&auparse->segment, GST_FORMAT_TIME); */ |
|
160 } |
|
161 |
|
162 static gboolean |
|
163 gst_au_parse_add_srcpad (GstAuParse * auparse, GstCaps * new_caps) |
|
164 { |
|
165 if (auparse->src_caps && gst_caps_is_equal (new_caps, auparse->src_caps)) { |
|
166 GST_LOG_OBJECT (auparse, "same caps, nothing to do"); |
|
167 return TRUE; |
|
168 } |
|
169 |
|
170 gst_caps_replace (&auparse->src_caps, new_caps); |
|
171 if (auparse->srcpad != NULL) { |
|
172 GST_DEBUG_OBJECT (auparse, "Changing src pad caps to %" GST_PTR_FORMAT, |
|
173 auparse->src_caps); |
|
174 gst_pad_set_caps (auparse->srcpad, auparse->src_caps); |
|
175 } |
|
176 |
|
177 if (auparse->srcpad == NULL) { |
|
178 auparse->srcpad = gst_pad_new_from_static_template (&src_template, "src"); |
|
179 g_return_val_if_fail (auparse->srcpad != NULL, FALSE); |
|
180 |
|
181 #if 0 |
|
182 gst_pad_set_query_type_function (auparse->srcpad, |
|
183 GST_DEBUG_FUNCPTR (gst_au_parse_src_get_query_types)); |
|
184 #endif |
|
185 gst_pad_set_query_function (auparse->srcpad, |
|
186 GST_DEBUG_FUNCPTR (gst_au_parse_src_query)); |
|
187 gst_pad_set_event_function (auparse->srcpad, |
|
188 GST_DEBUG_FUNCPTR (gst_au_parse_src_event)); |
|
189 |
|
190 gst_pad_use_fixed_caps (auparse->srcpad); |
|
191 gst_pad_set_active (auparse->srcpad, TRUE); |
|
192 |
|
193 if (auparse->src_caps) |
|
194 gst_pad_set_caps (auparse->srcpad, auparse->src_caps); |
|
195 |
|
196 GST_DEBUG_OBJECT (auparse, "Adding src pad with caps %" GST_PTR_FORMAT, |
|
197 auparse->src_caps); |
|
198 |
|
199 gst_object_ref (auparse->srcpad); |
|
200 if (!gst_element_add_pad (GST_ELEMENT (auparse), auparse->srcpad)) |
|
201 return FALSE; |
|
202 gst_element_no_more_pads (GST_ELEMENT (auparse)); |
|
203 } |
|
204 |
|
205 return TRUE; |
|
206 } |
|
207 |
|
208 static gboolean |
|
209 gst_au_parse_remove_srcpad (GstAuParse * auparse) |
|
210 { |
|
211 gboolean res = TRUE; |
|
212 |
|
213 if (auparse->srcpad != NULL) { |
|
214 GST_DEBUG_OBJECT (auparse, "Removing src pad"); |
|
215 res = gst_element_remove_pad (GST_ELEMENT (auparse), auparse->srcpad); |
|
216 g_return_val_if_fail (res != FALSE, FALSE); |
|
217 gst_object_unref (auparse->srcpad); |
|
218 auparse->srcpad = NULL; |
|
219 } |
|
220 |
|
221 return res; |
|
222 } |
|
223 |
|
224 static GstFlowReturn |
|
225 gst_au_parse_parse_header (GstAuParse * auparse) |
|
226 { |
|
227 GstCaps *tempcaps; |
|
228 guint32 size; |
|
229 guint8 *head; |
|
230 gchar layout[7] = { 0, }; |
|
231 gint law = 0, depth = 0, ieee = 0; |
|
232 |
|
233 head = (guint8 *) gst_adapter_peek (auparse->adapter, 24); |
|
234 g_assert (head != NULL); |
|
235 |
|
236 GST_DEBUG_OBJECT (auparse, "[%c%c%c%c]", head[0], head[1], head[2], head[3]); |
|
237 |
|
238 switch (GST_READ_UINT32_BE (head)) { |
|
239 /* normal format is big endian (au is a Sparc format) */ |
|
240 case 0x2e736e64:{ /* ".snd" */ |
|
241 auparse->endianness = G_BIG_ENDIAN; |
|
242 break; |
|
243 } |
|
244 /* and of course, someone had to invent a little endian |
|
245 * version. Used by DEC systems. */ |
|
246 case 0x646e732e: /* dns. */ |
|
247 case 0x0064732e:{ /* other source say it is "dns." */ |
|
248 auparse->endianness = G_LITTLE_ENDIAN; |
|
249 break; |
|
250 } |
|
251 default:{ |
|
252 goto unknown_header; |
|
253 } |
|
254 } |
|
255 |
|
256 auparse->offset = GST_READ_UINT32_BE (head + 4); |
|
257 /* Do not trust size, could be set to -1 : unknown */ |
|
258 size = GST_READ_UINT32_BE (head + 8); |
|
259 auparse->encoding = GST_READ_UINT32_BE (head + 12); |
|
260 auparse->samplerate = GST_READ_UINT32_BE (head + 16); |
|
261 auparse->channels = GST_READ_UINT32_BE (head + 20); |
|
262 |
|
263 if (auparse->samplerate < 8000 || auparse->samplerate > 192000) |
|
264 goto unsupported_sample_rate; |
|
265 |
|
266 if (auparse->channels < 1 || auparse->channels > 2) |
|
267 goto unsupported_number_of_channels; |
|
268 |
|
269 GST_DEBUG_OBJECT (auparse, "offset %" G_GINT64_FORMAT ", size %u, " |
|
270 "encoding %u, frequency %u, channels %u", auparse->offset, size, |
|
271 auparse->encoding, auparse->samplerate, auparse->channels); |
|
272 |
|
273 /* Docs: |
|
274 * http://www.opengroup.org/public/pubs/external/auformat.html |
|
275 * http://astronomy.swin.edu.au/~pbourke/dataformats/au/ |
|
276 * Solaris headers : /usr/include/audio/au.h |
|
277 * libsndfile : src/au.c |
|
278 * |
|
279 * Samples : |
|
280 * http://www.tsp.ece.mcgill.ca/MMSP/Documents/AudioFormats/AU/Samples.html |
|
281 */ |
|
282 |
|
283 switch (auparse->encoding) { |
|
284 case 1: /* 8-bit ISDN mu-law G.711 */ |
|
285 law = 1; |
|
286 depth = 8; |
|
287 break; |
|
288 case 27: /* 8-bit ISDN A-law G.711 */ |
|
289 law = 2; |
|
290 depth = 8; |
|
291 break; |
|
292 |
|
293 case 2: /* 8-bit linear PCM */ |
|
294 depth = 8; |
|
295 break; |
|
296 case 3: /* 16-bit linear PCM */ |
|
297 depth = 16; |
|
298 break; |
|
299 case 4: /* 24-bit linear PCM */ |
|
300 depth = 24; |
|
301 break; |
|
302 case 5: /* 32-bit linear PCM */ |
|
303 depth = 32; |
|
304 break; |
|
305 |
|
306 case 6: /* 32-bit IEEE floating point */ |
|
307 ieee = 1; |
|
308 depth = 32; |
|
309 break; |
|
310 case 7: /* 64-bit IEEE floating point */ |
|
311 ieee = 1; |
|
312 depth = 64; |
|
313 break; |
|
314 |
|
315 case 23: /* 4-bit CCITT G.721 ADPCM 32kbps -> modplug/libsndfile (compressed 8-bit mu-law) */ |
|
316 strcpy (layout, "g721"); |
|
317 break; |
|
318 case 24: /* 8-bit CCITT G.722 ADPCM -> rtp */ |
|
319 strcpy (layout, "g722"); |
|
320 break; |
|
321 case 25: /* 3-bit CCITT G.723.3 ADPCM 24kbps -> rtp/xine/modplug/libsndfile */ |
|
322 strcpy (layout, "g723_3"); |
|
323 break; |
|
324 case 26: /* 5-bit CCITT G.723.5 ADPCM 40kbps -> rtp/xine/modplug/libsndfile */ |
|
325 strcpy (layout, "g723_5"); |
|
326 break; |
|
327 |
|
328 case 8: /* Fragmented sample data */ |
|
329 case 9: /* AU_ENCODING_NESTED */ |
|
330 |
|
331 case 10: /* DSP program */ |
|
332 case 11: /* DSP 8-bit fixed point */ |
|
333 case 12: /* DSP 16-bit fixed point */ |
|
334 case 13: /* DSP 24-bit fixed point */ |
|
335 case 14: /* DSP 32-bit fixed point */ |
|
336 |
|
337 case 16: /* AU_ENCODING_DISPLAY : non-audio display data */ |
|
338 case 17: /* AU_ENCODING_MULAW_SQUELCH */ |
|
339 |
|
340 case 18: /* 16-bit linear with emphasis */ |
|
341 case 19: /* 16-bit linear compressed (NeXT) */ |
|
342 case 20: /* 16-bit linear with emphasis and compression */ |
|
343 |
|
344 case 21: /* Music kit DSP commands */ |
|
345 case 22: /* Music kit DSP commands samples */ |
|
346 |
|
347 default: |
|
348 goto unknown_format; |
|
349 } |
|
350 |
|
351 if (law) { |
|
352 tempcaps = |
|
353 gst_caps_new_simple ((law == 1) ? "audio/x-mulaw" : "audio/x-alaw", |
|
354 "rate", G_TYPE_INT, auparse->samplerate, |
|
355 "channels", G_TYPE_INT, auparse->channels, NULL); |
|
356 auparse->sample_size = auparse->channels; |
|
357 } else if (ieee) { |
|
358 tempcaps = gst_caps_new_simple ("audio/x-raw-float", |
|
359 "rate", G_TYPE_INT, auparse->samplerate, |
|
360 "channels", G_TYPE_INT, auparse->channels, |
|
361 "endianness", G_TYPE_INT, auparse->endianness, |
|
362 "width", G_TYPE_INT, depth, NULL); |
|
363 auparse->sample_size = auparse->channels * depth / 8; |
|
364 } else if (layout[0]) { |
|
365 tempcaps = gst_caps_new_simple ("audio/x-adpcm", |
|
366 "layout", G_TYPE_STRING, layout, NULL); |
|
367 auparse->sample_size = 0; |
|
368 } else { |
|
369 tempcaps = gst_caps_new_simple ("audio/x-raw-int", |
|
370 "rate", G_TYPE_INT, auparse->samplerate, |
|
371 "channels", G_TYPE_INT, auparse->channels, |
|
372 "endianness", G_TYPE_INT, auparse->endianness, |
|
373 "depth", G_TYPE_INT, depth, "width", G_TYPE_INT, depth, |
|
374 /* FIXME: signed TRUE even for 8-bit PCM? */ |
|
375 "signed", G_TYPE_BOOLEAN, TRUE, NULL); |
|
376 auparse->sample_size = auparse->channels * depth / 8; |
|
377 } |
|
378 |
|
379 GST_DEBUG_OBJECT (auparse, "sample_size=%d", auparse->sample_size); |
|
380 |
|
381 if (!gst_au_parse_add_srcpad (auparse, tempcaps)) |
|
382 goto add_pad_failed; |
|
383 |
|
384 GST_DEBUG_OBJECT (auparse, "offset=%" G_GINT64_FORMAT, auparse->offset); |
|
385 gst_adapter_flush (auparse->adapter, auparse->offset); |
|
386 |
|
387 gst_caps_unref (tempcaps); |
|
388 return GST_FLOW_OK; |
|
389 |
|
390 /* ERRORS */ |
|
391 unknown_header: |
|
392 { |
|
393 GST_ELEMENT_ERROR (auparse, STREAM, WRONG_TYPE, (NULL), (NULL)); |
|
394 return GST_FLOW_ERROR; |
|
395 } |
|
396 unsupported_sample_rate: |
|
397 { |
|
398 GST_ELEMENT_ERROR (auparse, STREAM, FORMAT, (NULL), |
|
399 ("Unsupported samplerate: %u", auparse->samplerate)); |
|
400 return GST_FLOW_ERROR; |
|
401 } |
|
402 unsupported_number_of_channels: |
|
403 { |
|
404 GST_ELEMENT_ERROR (auparse, STREAM, FORMAT, (NULL), |
|
405 ("Unsupported number of channels: %u", auparse->channels)); |
|
406 return GST_FLOW_ERROR; |
|
407 } |
|
408 unknown_format: |
|
409 { |
|
410 GST_ELEMENT_ERROR (auparse, STREAM, FORMAT, (NULL), |
|
411 ("Unsupported encoding: %u", auparse->encoding)); |
|
412 return GST_FLOW_ERROR; |
|
413 } |
|
414 add_pad_failed: |
|
415 { |
|
416 GST_ELEMENT_ERROR (auparse, STREAM, FAILED, (NULL), |
|
417 ("Failed to add srcpad")); |
|
418 gst_caps_unref (tempcaps); |
|
419 return GST_FLOW_ERROR; |
|
420 } |
|
421 } |
|
422 |
|
423 #define AU_HEADER_SIZE 24 |
|
424 |
|
425 static GstFlowReturn |
|
426 gst_au_parse_chain (GstPad * pad, GstBuffer * buf) |
|
427 { |
|
428 GstFlowReturn ret = GST_FLOW_OK; |
|
429 GstAuParse *auparse; |
|
430 gint avail, sendnow = 0; |
|
431 |
|
432 auparse = GST_AU_PARSE (gst_pad_get_parent (pad)); |
|
433 |
|
434 GST_LOG_OBJECT (auparse, "got buffer of size %u", GST_BUFFER_SIZE (buf)); |
|
435 |
|
436 gst_adapter_push (auparse->adapter, buf); |
|
437 buf = NULL; |
|
438 |
|
439 /* if we haven't seen any data yet... */ |
|
440 if (auparse->srcpad == NULL) { |
|
441 if (gst_adapter_available (auparse->adapter) < AU_HEADER_SIZE) { |
|
442 GST_DEBUG_OBJECT (auparse, "need more data to parse header"); |
|
443 ret = GST_FLOW_OK; |
|
444 goto out; |
|
445 } |
|
446 |
|
447 ret = gst_au_parse_parse_header (auparse); |
|
448 if (ret != GST_FLOW_OK) |
|
449 goto out; |
|
450 |
|
451 gst_pad_push_event (auparse->srcpad, |
|
452 gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_DEFAULT, |
|
453 0, GST_CLOCK_TIME_NONE, 0)); |
|
454 } |
|
455 |
|
456 avail = gst_adapter_available (auparse->adapter); |
|
457 |
|
458 if (auparse->sample_size > 0) { |
|
459 /* Ensure we push a buffer that's a multiple of the frame size downstream */ |
|
460 sendnow = avail - (avail % auparse->sample_size); |
|
461 } else { |
|
462 /* It's something non-trivial (such as ADPCM), we don't understand it, so |
|
463 * just push downstream and assume it will know what to do with it */ |
|
464 sendnow = avail; |
|
465 } |
|
466 |
|
467 if (sendnow > 0) { |
|
468 GstBuffer *outbuf; |
|
469 const guint8 *data; |
|
470 |
|
471 ret = gst_pad_alloc_buffer_and_set_caps (auparse->srcpad, |
|
472 auparse->buffer_offset, sendnow, GST_PAD_CAPS (auparse->srcpad), |
|
473 &outbuf); |
|
474 |
|
475 if (ret != GST_FLOW_OK) { |
|
476 GST_DEBUG_OBJECT (auparse, "pad alloc flow: %s", gst_flow_get_name (ret)); |
|
477 goto out; |
|
478 } |
|
479 |
|
480 data = gst_adapter_peek (auparse->adapter, sendnow); |
|
481 memcpy (GST_BUFFER_DATA (outbuf), data, sendnow); |
|
482 gst_adapter_flush (auparse->adapter, sendnow); |
|
483 |
|
484 auparse->buffer_offset += sendnow; |
|
485 |
|
486 ret = gst_pad_push (auparse->srcpad, outbuf); |
|
487 } |
|
488 |
|
489 out: |
|
490 |
|
491 gst_object_unref (auparse); |
|
492 return ret; |
|
493 } |
|
494 |
|
495 static gboolean |
|
496 gst_au_parse_src_convert (GstAuParse * auparse, GstFormat src_format, |
|
497 gint64 srcval, GstFormat dest_format, gint64 * destval) |
|
498 { |
|
499 gboolean ret = TRUE; |
|
500 guint samplesize, rate; |
|
501 |
|
502 if (dest_format == src_format) { |
|
503 *destval = srcval; |
|
504 return TRUE; |
|
505 } |
|
506 |
|
507 GST_OBJECT_LOCK (auparse); |
|
508 samplesize = auparse->sample_size; |
|
509 rate = auparse->samplerate; |
|
510 GST_OBJECT_UNLOCK (auparse); |
|
511 |
|
512 if (samplesize == 0 || rate == 0) { |
|
513 GST_LOG_OBJECT (auparse, "cannot convert, sample_size or rate unknown"); |
|
514 return FALSE; |
|
515 } |
|
516 |
|
517 switch (src_format) { |
|
518 case GST_FORMAT_BYTES: |
|
519 srcval /= samplesize; |
|
520 /* fallthrough */ |
|
521 case GST_FORMAT_DEFAULT:{ |
|
522 switch (dest_format) { |
|
523 case GST_FORMAT_BYTES: |
|
524 *destval = srcval * samplesize; |
|
525 break; |
|
526 case GST_FORMAT_TIME: |
|
527 *destval = gst_util_uint64_scale_int (srcval, GST_SECOND, rate); |
|
528 break; |
|
529 default: |
|
530 ret = FALSE; |
|
531 break; |
|
532 } |
|
533 break; |
|
534 } |
|
535 case GST_FORMAT_TIME:{ |
|
536 switch (dest_format) { |
|
537 case GST_FORMAT_BYTES: |
|
538 *destval = |
|
539 gst_util_uint64_scale_int (srcval, rate * samplesize, GST_SECOND); |
|
540 break; |
|
541 case GST_FORMAT_DEFAULT: |
|
542 *destval = gst_util_uint64_scale_int (srcval, rate, GST_SECOND); |
|
543 break; |
|
544 default: |
|
545 ret = FALSE; |
|
546 break; |
|
547 } |
|
548 break; |
|
549 } |
|
550 default:{ |
|
551 ret = FALSE; |
|
552 break; |
|
553 } |
|
554 } |
|
555 |
|
556 if (!ret) { |
|
557 GST_DEBUG_OBJECT (auparse, "could not convert from %s to %s format", |
|
558 gst_format_get_name (src_format), gst_format_get_name (dest_format)); |
|
559 } |
|
560 |
|
561 return ret; |
|
562 } |
|
563 |
|
564 static gboolean |
|
565 gst_au_parse_src_query (GstPad * pad, GstQuery * query) |
|
566 { |
|
567 GstAuParse *auparse; |
|
568 gboolean ret = FALSE; |
|
569 |
|
570 auparse = GST_AU_PARSE (gst_pad_get_parent (pad)); |
|
571 |
|
572 switch (GST_QUERY_TYPE (query)) { |
|
573 case GST_QUERY_DURATION:{ |
|
574 GstFormat bformat = GST_FORMAT_BYTES; |
|
575 GstFormat format; |
|
576 gint64 len, val; |
|
577 |
|
578 gst_query_parse_duration (query, &format, NULL); |
|
579 if (!gst_pad_query_peer_duration (auparse->sinkpad, &bformat, &len)) { |
|
580 GST_DEBUG_OBJECT (auparse, "failed to query upstream length"); |
|
581 break; |
|
582 } |
|
583 GST_OBJECT_LOCK (auparse); |
|
584 len -= auparse->offset; |
|
585 GST_OBJECT_UNLOCK (auparse); |
|
586 |
|
587 ret = gst_au_parse_src_convert (auparse, GST_FORMAT_BYTES, len, |
|
588 format, &val); |
|
589 |
|
590 if (ret) { |
|
591 gst_query_set_duration (query, format, val); |
|
592 } |
|
593 break; |
|
594 } |
|
595 case GST_QUERY_POSITION:{ |
|
596 GstFormat bformat = GST_FORMAT_BYTES; |
|
597 GstFormat format; |
|
598 gint64 pos, val; |
|
599 |
|
600 gst_query_parse_position (query, &format, NULL); |
|
601 if (!gst_pad_query_peer_position (auparse->sinkpad, &bformat, &pos)) { |
|
602 GST_DEBUG_OBJECT (auparse, "failed to query upstream position"); |
|
603 break; |
|
604 } |
|
605 GST_OBJECT_LOCK (auparse); |
|
606 pos -= auparse->offset; |
|
607 GST_OBJECT_UNLOCK (auparse); |
|
608 |
|
609 ret = gst_au_parse_src_convert (auparse, GST_FORMAT_BYTES, pos, |
|
610 format, &val); |
|
611 |
|
612 if (ret) { |
|
613 gst_query_set_position (query, format, val); |
|
614 } |
|
615 break; |
|
616 } |
|
617 default: |
|
618 ret = gst_pad_query_default (pad, query); |
|
619 break; |
|
620 } |
|
621 |
|
622 gst_object_unref (auparse); |
|
623 return ret; |
|
624 } |
|
625 |
|
626 static gboolean |
|
627 gst_au_parse_handle_seek (GstAuParse * auparse, GstEvent * event) |
|
628 { |
|
629 GstSeekType start_type, stop_type; |
|
630 GstSeekFlags flags; |
|
631 GstFormat format; |
|
632 gdouble rate; |
|
633 gint64 start, stop; |
|
634 |
|
635 gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start, |
|
636 &stop_type, &stop); |
|
637 |
|
638 if (format != GST_FORMAT_TIME) { |
|
639 GST_DEBUG_OBJECT (auparse, "only support seeks in TIME format"); |
|
640 return FALSE; |
|
641 } |
|
642 |
|
643 /* FIXME: implement seeking */ |
|
644 return FALSE; |
|
645 } |
|
646 |
|
647 static gboolean |
|
648 gst_au_parse_sink_event (GstPad * pad, GstEvent * event) |
|
649 { |
|
650 GstAuParse *auparse; |
|
651 gboolean ret; |
|
652 |
|
653 auparse = GST_AU_PARSE (gst_pad_get_parent (pad)); |
|
654 |
|
655 switch (GST_EVENT_TYPE (event)) { |
|
656 default: |
|
657 ret = gst_pad_event_default (pad, event); |
|
658 break; |
|
659 } |
|
660 |
|
661 gst_object_unref (auparse); |
|
662 return ret; |
|
663 } |
|
664 |
|
665 static gboolean |
|
666 gst_au_parse_src_event (GstPad * pad, GstEvent * event) |
|
667 { |
|
668 GstAuParse *auparse; |
|
669 gboolean ret; |
|
670 |
|
671 auparse = GST_AU_PARSE (gst_pad_get_parent (pad)); |
|
672 |
|
673 switch (GST_EVENT_TYPE (event)) { |
|
674 case GST_EVENT_SEEK: |
|
675 ret = gst_au_parse_handle_seek (auparse, event); |
|
676 break; |
|
677 default: |
|
678 ret = gst_pad_event_default (pad, event); |
|
679 break; |
|
680 } |
|
681 |
|
682 gst_object_unref (auparse); |
|
683 return ret; |
|
684 } |
|
685 |
|
686 static GstStateChangeReturn |
|
687 gst_au_parse_change_state (GstElement * element, GstStateChange transition) |
|
688 { |
|
689 GstAuParse *auparse = GST_AU_PARSE (element); |
|
690 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; |
|
691 |
|
692 ret = parent_class->change_state (element, transition); |
|
693 if (ret == GST_STATE_CHANGE_FAILURE) |
|
694 return ret; |
|
695 |
|
696 switch (transition) { |
|
697 case GST_STATE_CHANGE_PAUSED_TO_READY: |
|
698 gst_au_parse_reset (auparse); |
|
699 default: |
|
700 break; |
|
701 } |
|
702 |
|
703 return ret; |
|
704 } |
|
705 |
|
706 static gboolean |
|
707 plugin_init (GstPlugin * plugin) |
|
708 { |
|
709 if (!gst_element_register (plugin, "auparse", GST_RANK_SECONDARY, |
|
710 GST_TYPE_AU_PARSE)) { |
|
711 return FALSE; |
|
712 } |
|
713 |
|
714 return TRUE; |
|
715 } |
|
716 |
|
717 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, |
|
718 GST_VERSION_MINOR, |
|
719 "auparse", |
|
720 "parses au streams", plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, |
|
721 GST_PACKAGE_ORIGIN) |
|
722 |
|
723 EXPORT_C GstPluginDesc* _GST_PLUGIN_DESC() |
|
724 { |
|
725 return &gst_plugin_desc; |
|
726 } |