1 /* GStreamer wavpack plugin
2 * Copyright (c) 2005 Arwed v. Merkatz <v.merkatz@gmx.net>
3 * Copyright (c) 2006 Tim-Philipp Müller <tim centricular net>
4 * Copyright (c) 2006 Sebastian Dröge <slomo@circular-chaos.org>
6 * gstwavpackparse.c: wavpack file parser
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
25 * SECTION:element-wavpackparse
28 * WavpackParse takes raw, unframed Wavpack streams and splits them into
29 * single Wavpack chunks with information like bit depth and the position
31 * <ulink url="http://www.wavpack.com/">Wavpack</ulink> is an open-source
32 * audio codec that features both lossless and lossy encoding.
33 * <title>Example launch line</title>
36 * gst-launch filesrc location=test.wv ! wavpackparse ! wavpackdec ! fakesink
38 * This pipeline decodes the Wavpack file test.wv into raw audio buffers.
47 #include <gst/gst-i18n-plugin.h>
52 #include <wavpack/wavpack.h>
53 #include "gstwavpackparse.h"
54 #include "gstwavpackstreamreader.h"
55 #include "gstwavpackcommon.h"
57 GST_DEBUG_CATEGORY_STATIC (gst_wavpack_parse_debug);
58 #define GST_CAT_DEFAULT gst_wavpack_parse_debug
60 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
63 GST_STATIC_CAPS ("audio/x-wavpack, "
64 "framed = (boolean) false; "
65 "audio/x-wavpack-correction, " "framed = (boolean) false")
68 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
71 GST_STATIC_CAPS ("audio/x-wavpack, "
72 "width = (int) [ 1, 32 ], "
73 "channels = (int) [ 1, 8 ], "
74 "rate = (int) [ 6000, 192000 ], " "framed = (boolean) true")
77 static GstStaticPadTemplate wvc_src_factory = GST_STATIC_PAD_TEMPLATE ("wvcsrc",
80 GST_STATIC_CAPS ("audio/x-wavpack-correction, " "framed = (boolean) true")
83 static gboolean gst_wavpack_parse_sink_activate (GstPad * sinkpad);
85 gst_wavpack_parse_sink_activate_pull (GstPad * sinkpad, gboolean active);
87 static void gst_wavpack_parse_loop (GstElement * element);
88 static GstStateChangeReturn gst_wavpack_parse_change_state (GstElement *
89 element, GstStateChange transition);
90 static void gst_wavpack_parse_reset (GstWavpackParse * parse);
91 static gint64 gst_wavpack_parse_get_upstream_length (GstWavpackParse * wvparse);
92 static GstBuffer *gst_wavpack_parse_pull_buffer (GstWavpackParse * wvparse,
93 gint64 offset, guint size, GstFlowReturn * flow);
94 static GstFlowReturn gst_wavpack_parse_chain (GstPad * pad, GstBuffer * buf);
96 GST_BOILERPLATE (GstWavpackParse, gst_wavpack_parse, GstElement,
100 gst_wavpack_parse_base_init (gpointer klass)
102 static const GstElementDetails plugin_details =
103 GST_ELEMENT_DETAILS ("Wavpack parser",
104 "Codec/Demuxer/Audio",
105 "Parses Wavpack files",
106 "Arwed v. Merkatz <v.merkatz@gmx.net>, "
107 "Sebastian Dröge <slomo@circular-chaos.org>");
108 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
110 gst_element_class_add_pad_template (element_class,
111 gst_static_pad_template_get (&src_factory));
112 gst_element_class_add_pad_template (element_class,
113 gst_static_pad_template_get (&wvc_src_factory));
114 gst_element_class_add_pad_template (element_class,
115 gst_static_pad_template_get (&sink_factory));
116 gst_element_class_set_details (element_class, &plugin_details);
120 gst_wavpack_parse_finalize (GObject * object)
122 gst_wavpack_parse_reset (GST_WAVPACK_PARSE (object));
124 G_OBJECT_CLASS (parent_class)->finalize (object);
128 gst_wavpack_parse_class_init (GstWavpackParseClass * klass)
130 GObjectClass *gobject_class;
131 GstElementClass *gstelement_class;
133 gobject_class = (GObjectClass *) klass;
134 gstelement_class = (GstElementClass *) klass;
136 gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_wavpack_parse_finalize);
137 gstelement_class->change_state =
138 GST_DEBUG_FUNCPTR (gst_wavpack_parse_change_state);
141 static GstWavpackParseIndexEntry *
142 gst_wavpack_parse_index_get_last_entry (GstWavpackParse * wvparse)
144 g_assert (wvparse->entries != NULL);
146 return wvparse->entries->data;
149 static GstWavpackParseIndexEntry *
150 gst_wavpack_parse_index_get_entry_from_sample (GstWavpackParse * wvparse,
151 gint64 sample_offset)
156 if (wvparse->entries == NULL)
159 for (node = wvparse->entries, i = 0; node; node = node->next, i++) {
160 GstWavpackParseIndexEntry *entry;
164 GST_LOG_OBJECT (wvparse, "Index entry %03u: sample %" G_GINT64_FORMAT " @"
165 " byte %" G_GINT64_FORMAT, i, entry->sample_offset, entry->byte_offset);
167 if (entry->sample_offset <= sample_offset &&
168 sample_offset < entry->sample_offset_end) {
169 GST_LOG_OBJECT (wvparse, "found match");
173 /* as the list is sorted and we first look at the latest entry
174 * we can abort searching for an entry if the sample we want is
175 * after the latest one */
176 if (sample_offset >= entry->sample_offset_end)
179 GST_LOG_OBJECT (wvparse, "no match in index");
184 gst_wavpack_parse_index_append_entry (GstWavpackParse * wvparse,
185 gint64 byte_offset, gint64 sample_offset, gint64 num_samples)
187 GstWavpackParseIndexEntry *entry;
189 /* do we have this one already? */
190 if (wvparse->entries) {
191 entry = gst_wavpack_parse_index_get_last_entry (wvparse);
192 if (entry->byte_offset >= byte_offset
193 || entry->sample_offset >= sample_offset)
197 GST_LOG_OBJECT (wvparse, "Adding index entry %8" G_GINT64_FORMAT " - %"
198 GST_TIME_FORMAT " @ offset 0x%08" G_GINT64_MODIFIER "x", sample_offset,
199 GST_TIME_ARGS (gst_util_uint64_scale_int (sample_offset,
200 GST_SECOND, wvparse->samplerate)), byte_offset);
202 entry = g_new0 (GstWavpackParseIndexEntry, 1);
203 entry->byte_offset = byte_offset;
204 entry->sample_offset = sample_offset;
205 entry->sample_offset_end = sample_offset + num_samples;
206 wvparse->entries = g_slist_prepend (wvparse->entries, entry);
210 gst_wavpack_parse_reset (GstWavpackParse * parse)
212 parse->total_samples = -1;
213 parse->samplerate = 0;
216 gst_segment_init (&parse->segment, GST_FORMAT_UNDEFINED);
217 parse->next_block_index = 0;
219 parse->current_offset = 0;
220 parse->need_newsegment = TRUE;
221 parse->discont = TRUE;
222 parse->upstream_length = -1;
224 if (parse->entries) {
225 g_slist_foreach (parse->entries, (GFunc) g_free, NULL);
226 g_slist_free (parse->entries);
227 parse->entries = NULL;
230 if (parse->adapter) {
231 gst_adapter_clear (parse->adapter);
232 g_object_unref (parse->adapter);
233 parse->adapter = NULL;
236 if (parse->srcpad != NULL) {
239 GST_DEBUG_OBJECT (parse, "Removing src pad");
240 res = gst_element_remove_pad (GST_ELEMENT (parse), parse->srcpad);
241 g_return_if_fail (res != FALSE);
242 gst_object_unref (parse->srcpad);
243 parse->srcpad = NULL;
246 g_list_foreach (parse->queued_events, (GFunc) gst_mini_object_unref, NULL);
247 g_list_free (parse->queued_events);
248 parse->queued_events = NULL;
250 if (parse->pending_buffer)
251 gst_buffer_unref (parse->pending_buffer);
253 parse->pending_buffer = NULL;
256 static const GstQueryType *
257 gst_wavpack_parse_get_src_query_types (GstPad * pad)
259 static const GstQueryType types[] = {
270 gst_wavpack_parse_src_query (GstPad * pad, GstQuery * query)
272 GstWavpackParse *parse = GST_WAVPACK_PARSE (gst_pad_get_parent (pad));
274 gboolean ret = FALSE;
276 switch (GST_QUERY_TYPE (query)) {
277 case GST_QUERY_POSITION:{
281 GST_OBJECT_LOCK (parse);
282 cur = parse->segment.last_stop;
283 len = parse->total_samples;
284 rate = parse->samplerate;
285 GST_OBJECT_UNLOCK (parse);
287 if (len < 0 || rate == 0) {
288 GST_DEBUG_OBJECT (parse, "haven't read header yet");
292 gst_query_parse_position (query, &format, NULL);
295 case GST_FORMAT_TIME:
296 cur = gst_util_uint64_scale_int (cur, GST_SECOND, rate);
297 gst_query_set_position (query, GST_FORMAT_TIME, cur);
300 case GST_FORMAT_DEFAULT:
301 gst_query_set_position (query, GST_FORMAT_DEFAULT, cur);
305 GST_DEBUG_OBJECT (parse, "cannot handle position query in "
306 "%s format. Forwarding upstream.", gst_format_get_name (format));
307 ret = gst_pad_query_default (pad, query);
312 case GST_QUERY_DURATION:{
316 GST_OBJECT_LOCK (parse);
317 rate = parse->samplerate;
318 /* FIXME: return 0 if we work in push based mode to let totem
319 * recognize that we can't seek */
320 len = (parse->adapter) ? 0 : parse->total_samples;
321 GST_OBJECT_UNLOCK (parse);
323 if (len < 0 || rate == 0) {
324 GST_DEBUG_OBJECT (parse, "haven't read header yet");
328 gst_query_parse_duration (query, &format, NULL);
331 case GST_FORMAT_TIME:
332 len = gst_util_uint64_scale_int (len, GST_SECOND, rate);
333 gst_query_set_duration (query, GST_FORMAT_TIME, len);
336 case GST_FORMAT_DEFAULT:
337 gst_query_set_duration (query, GST_FORMAT_DEFAULT, len);
341 GST_DEBUG_OBJECT (parse, "cannot handle duration query in "
342 "%s format. Forwarding upstream.", gst_format_get_name (format));
343 ret = gst_pad_query_default (pad, query);
348 case GST_QUERY_SEEKING:{
349 gst_query_parse_seeking (query, &format, NULL, NULL, NULL);
350 if (format == GST_FORMAT_TIME || format == GST_FORMAT_DEFAULT) {
352 gint64 duration = -1;
354 /* only fails if we didn't read the headers yet and can't say
355 * anything about our seeking capabilities */
356 if (!gst_pad_query_duration (pad, &format, &duration))
359 /* can't seek in streaming mode yet */
360 GST_OBJECT_LOCK (parse);
361 seekable = (parse->adapter == NULL);
362 GST_OBJECT_UNLOCK (parse);
364 gst_query_set_seeking (query, format, seekable, 0, duration);
370 ret = gst_pad_query_default (pad, query);
375 gst_object_unref (parse);
380 /* returns TRUE on success, with byte_offset set to the offset of the
381 * wavpack chunk containing the sample requested. start_sample will be
382 * set to the first sample in the chunk starting at byte_offset.
383 * Scanning from the last known header offset to the wanted position
384 * when seeking forward isn't very clever, but seems fast enough in
385 * practice and has the nice side effect of populating our index
388 gst_wavpack_parse_scan_to_find_sample (GstWavpackParse * parse,
389 gint64 sample, gint64 * byte_offset, gint64 * start_sample)
391 GstWavpackParseIndexEntry *entry;
395 /* first, check if we have to scan at all */
396 entry = gst_wavpack_parse_index_get_entry_from_sample (parse, sample);
398 *byte_offset = entry->byte_offset;
399 *start_sample = entry->sample_offset;
400 GST_LOG_OBJECT (parse, "Found index entry: sample %" G_GINT64_FORMAT
401 " @ offset %" G_GINT64_FORMAT, entry->sample_offset,
406 GST_LOG_OBJECT (parse, "No matching entry in index, scanning file ...");
408 /* if we have an index, we can start scanning from the last known offset
409 * in there, after all we know our wanted sample is not in the index */
410 if (parse->entries) {
411 GstWavpackParseIndexEntry *entry;
413 entry = gst_wavpack_parse_index_get_last_entry (parse);
414 off = entry->byte_offset;
417 /* now scan forward until we find the chunk we're looking for or hit EOS */
419 WavpackHeader header;
422 buf = gst_wavpack_parse_pull_buffer (parse, off, sizeof (WavpackHeader),
428 gst_wavpack_read_header (&header, GST_BUFFER_DATA (buf));
429 gst_buffer_unref (buf);
431 if (header.flags & INITIAL_BLOCK)
432 gst_wavpack_parse_index_append_entry (parse, off, header.block_index,
433 header.block_samples);
437 if (header.block_index <= sample &&
438 sample < (header.block_index + header.block_samples)) {
440 *start_sample = header.block_index;
444 off += header.ckSize + 8;
447 GST_DEBUG_OBJECT (parse, "scan failed: %s (off=0x%08" G_GINT64_MODIFIER "x)",
448 gst_flow_get_name (ret), off);
454 gst_wavpack_parse_send_newsegment (GstWavpackParse * wvparse, gboolean update)
456 GstSegment *s = &wvparse->segment;
458 gint64 stop_time = -1;
459 gint64 start_time = 0;
463 /* segment is in DEFAULT format, but we want to send a TIME newsegment */
464 start_time = gst_util_uint64_scale_int (s->start, GST_SECOND,
465 wvparse->samplerate);
468 stop_time = gst_util_uint64_scale_int (s->stop, GST_SECOND,
469 wvparse->samplerate);
472 GST_DEBUG_OBJECT (wvparse, "sending newsegment from %" GST_TIME_FORMAT
473 " to %" GST_TIME_FORMAT, GST_TIME_ARGS (start_time),
474 GST_TIME_ARGS (stop_time));
476 /* after a seek, s->last_stop will point to a chunk boundary, ie. from
477 * which sample we will start sending data again, while s->start will
478 * point to the sample we actually want to seek to and want to start
479 * playing right after the seek. Adjust clock-time for the difference
480 * so we start playing from start_time */
481 cur_pos_time = gst_util_uint64_scale_int (s->last_stop, GST_SECOND,
482 wvparse->samplerate);
483 diff = start_time - cur_pos_time;
485 ret = gst_pad_push_event (wvparse->srcpad,
486 gst_event_new_new_segment (update, s->rate, GST_FORMAT_TIME,
487 start_time, stop_time, start_time - diff));
493 gst_wavpack_parse_handle_seek_event (GstWavpackParse * wvparse,
496 GstSeekFlags seek_flags;
497 GstSeekType start_type;
498 GstSeekType stop_type;
501 gboolean only_update;
505 gint64 start; /* sample we want to seek to */
506 gint64 byte_offset; /* byte offset the chunk we seek to starts at */
507 gint64 chunk_start; /* first sample in chunk we seek to */
511 if (wvparse->adapter) {
512 GST_DEBUG_OBJECT (wvparse, "seeking in streaming mode not implemented yet");
516 gst_event_parse_seek (event, &speed, &format, &seek_flags, &start_type,
517 &start, &stop_type, &stop);
519 if (format != GST_FORMAT_DEFAULT && format != GST_FORMAT_TIME) {
520 GST_DEBUG ("seeking is only supported in TIME or DEFAULT format");
525 GST_DEBUG ("only forward playback supported, rate %f not allowed", speed);
529 GST_OBJECT_LOCK (wvparse);
531 rate = wvparse->samplerate;
533 GST_OBJECT_UNLOCK (wvparse);
534 GST_DEBUG ("haven't read header yet");
538 /* figure out the last position we need to play. If it's configured (stop !=
539 * -1), use that, else we play until the total duration of the file */
541 stop = wvparse->segment.duration;
543 /* convert from time to samples if necessary */
544 if (format == GST_FORMAT_TIME) {
545 if (start_type != GST_SEEK_TYPE_NONE)
546 start = gst_util_uint64_scale_int (start, rate, GST_SECOND);
547 if (stop_type != GST_SEEK_TYPE_NONE)
548 stop = gst_util_uint64_scale_int (stop, rate, GST_SECOND);
552 GST_OBJECT_UNLOCK (wvparse);
553 GST_DEBUG_OBJECT (wvparse, "Invalid start sample %" G_GINT64_FORMAT, start);
557 flush = ((seek_flags & GST_SEEK_FLAG_FLUSH) != 0);
559 /* operate on segment copy until we know the seek worked */
560 segment = wvparse->segment;
562 gst_segment_set_seek (&segment, speed, GST_FORMAT_DEFAULT,
563 seek_flags, start_type, start, stop_type, stop, &only_update);
567 wvparse->segment = segment;
568 gst_wavpack_parse_send_newsegment (wvparse, TRUE);
573 gst_pad_push_event (wvparse->sinkpad, gst_event_new_flush_start ());
576 gst_pad_push_event (wvparse->srcpad, gst_event_new_flush_start ());
578 gst_pad_pause_task (wvparse->sinkpad);
581 GST_PAD_STREAM_LOCK (wvparse->sinkpad);
583 /* Save current position */
584 last_stop = wvparse->segment.last_stop;
586 gst_pad_push_event (wvparse->sinkpad, gst_event_new_flush_stop ());
589 gst_pad_push_event (wvparse->srcpad, gst_event_new_flush_stop ());
592 GST_DEBUG_OBJECT (wvparse, "Performing seek to %" GST_TIME_FORMAT " sample %"
593 G_GINT64_FORMAT, GST_TIME_ARGS (segment.start * GST_SECOND / rate),
596 ret = gst_wavpack_parse_scan_to_find_sample (wvparse, segment.start,
597 &byte_offset, &chunk_start);
600 GST_DEBUG_OBJECT (wvparse, "new offset: %" G_GINT64_FORMAT, byte_offset);
601 wvparse->current_offset = byte_offset;
602 /* we want to send a newsegment event with the actual seek position
603 * as start, even though our first buffer might start before the
604 * configured segment. We leave it up to the decoder or sink to crop
605 * the output buffers accordingly */
606 wvparse->segment = segment;
607 wvparse->segment.last_stop = chunk_start;
608 wvparse->need_newsegment = TRUE;
609 wvparse->discont = (last_stop != chunk_start) ? TRUE : FALSE;
611 /* if we're doing a segment seek, post a SEGMENT_START message */
612 if (wvparse->segment.flags & GST_SEEK_FLAG_SEGMENT) {
613 gst_element_post_message (GST_ELEMENT_CAST (wvparse),
614 gst_message_new_segment_start (GST_OBJECT_CAST (wvparse),
615 wvparse->segment.format, wvparse->segment.last_stop));
618 GST_DEBUG_OBJECT (wvparse, "seek failed: don't know where to seek to");
621 GST_PAD_STREAM_UNLOCK (wvparse->sinkpad);
622 GST_OBJECT_UNLOCK (wvparse);
624 gst_pad_start_task (wvparse->sinkpad,
625 (GstTaskFunction) gst_wavpack_parse_loop, wvparse);
631 gst_wavpack_parse_sink_event (GstPad * pad, GstEvent * event)
633 GstWavpackParse *parse;
636 parse = GST_WAVPACK_PARSE (gst_pad_get_parent (pad));
638 switch (GST_EVENT_TYPE (event)) {
639 case GST_EVENT_FLUSH_STOP:{
640 if (parse->adapter) {
641 gst_adapter_clear (parse->adapter);
643 if (parse->pending_buffer) {
644 gst_buffer_unref (parse->pending_buffer);
645 parse->pending_buffer = NULL;
646 parse->pending_offset = 0;
648 ret = gst_pad_push_event (parse->srcpad, event);
651 case GST_EVENT_NEWSEGMENT:{
652 parse->need_newsegment = TRUE;
653 gst_event_unref (event);
658 if (parse->adapter) {
659 /* remove all bytes that are left in the adapter after EOS. They can't
660 * be a complete Wavpack block and we can't do anything with them */
661 gst_adapter_clear (parse->adapter);
663 if (parse->pending_buffer) {
664 gst_buffer_unref (parse->pending_buffer);
665 parse->pending_buffer = NULL;
666 parse->pending_offset = 0;
668 ret = gst_pad_push_event (parse->srcpad, event);
672 /* stream lock is recursive, should be fine for all events */
673 GST_PAD_STREAM_LOCK (pad);
674 if (parse->srcpad == NULL) {
675 parse->queued_events = g_list_append (parse->queued_events, event);
677 ret = gst_pad_push_event (parse->srcpad, event);
679 GST_PAD_STREAM_UNLOCK (pad);
684 gst_object_unref (parse);
689 gst_wavpack_parse_src_event (GstPad * pad, GstEvent * event)
691 GstWavpackParse *parse;
694 parse = GST_WAVPACK_PARSE (gst_pad_get_parent (pad));
696 switch (GST_EVENT_TYPE (event)) {
698 ret = gst_wavpack_parse_handle_seek_event (parse, event);
701 ret = gst_pad_event_default (pad, event);
705 gst_object_unref (parse);
710 gst_wavpack_parse_init (GstWavpackParse * parse, GstWavpackParseClass * gclass)
712 GstElementClass *klass = GST_ELEMENT_GET_CLASS (parse);
713 GstPadTemplate *tmpl;
715 tmpl = gst_element_class_get_pad_template (klass, "sink");
716 parse->sinkpad = gst_pad_new_from_template (tmpl, "sink");
718 gst_pad_set_activate_function (parse->sinkpad,
719 GST_DEBUG_FUNCPTR (gst_wavpack_parse_sink_activate));
720 gst_pad_set_activatepull_function (parse->sinkpad,
721 GST_DEBUG_FUNCPTR (gst_wavpack_parse_sink_activate_pull));
722 gst_pad_set_event_function (parse->sinkpad,
723 GST_DEBUG_FUNCPTR (gst_wavpack_parse_sink_event));
724 gst_pad_set_chain_function (parse->sinkpad,
725 GST_DEBUG_FUNCPTR (gst_wavpack_parse_chain));
727 gst_element_add_pad (GST_ELEMENT (parse), parse->sinkpad);
729 parse->srcpad = NULL;
730 gst_wavpack_parse_reset (parse);
734 gst_wavpack_parse_get_upstream_length (GstWavpackParse * parse)
738 GstFormat format = GST_FORMAT_BYTES;
740 if (!gst_pad_query_peer_duration (parse->sinkpad, &format, &length)) {
743 GST_DEBUG ("upstream length: %" G_GINT64_FORMAT, length);
749 gst_wavpack_parse_pull_buffer (GstWavpackParse * wvparse, gint64 offset,
750 guint size, GstFlowReturn * flow)
752 GstFlowReturn flow_ret;
753 GstBuffer *buf = NULL;
755 if (offset + size >= wvparse->upstream_length) {
756 wvparse->upstream_length = gst_wavpack_parse_get_upstream_length (wvparse);
757 if (offset + size >= wvparse->upstream_length) {
758 GST_DEBUG_OBJECT (wvparse, "EOS: %" G_GINT64_FORMAT " + %u > %"
759 G_GINT64_FORMAT, offset, size, wvparse->upstream_length);
760 flow_ret = GST_FLOW_UNEXPECTED;
765 flow_ret = gst_pad_pull_range (wvparse->sinkpad, offset, size, &buf);
767 if (flow_ret != GST_FLOW_OK) {
768 GST_DEBUG_OBJECT (wvparse, "pull_range (%" G_GINT64_FORMAT ", %u) "
769 "failed, flow: %s", offset, size, gst_flow_get_name (flow_ret));
774 if (GST_BUFFER_SIZE (buf) < size) {
775 GST_DEBUG_OBJECT (wvparse, "Short read at offset %" G_GINT64_FORMAT
776 ", got only %u of %u bytes", offset, GST_BUFFER_SIZE (buf), size);
777 gst_buffer_unref (buf);
779 flow_ret = GST_FLOW_UNEXPECTED;
789 gst_wavpack_parse_create_src_pad (GstWavpackParse * wvparse, GstBuffer * buf,
790 WavpackHeader * header)
792 GstWavpackMetadata meta;
793 GstCaps *caps = NULL;
796 g_assert (wvparse->srcpad == NULL);
798 bufptr = GST_BUFFER_DATA (buf) + sizeof (WavpackHeader);
800 while (gst_wavpack_read_metadata (&meta, GST_BUFFER_DATA (buf), &bufptr)) {
802 case ID_WVC_BITSTREAM:{
803 caps = gst_caps_new_simple ("audio/x-wavpack-correction",
804 "framed", G_TYPE_BOOLEAN, TRUE, NULL);
806 gst_pad_new_from_template (gst_element_class_get_pad_template
807 (GST_ELEMENT_GET_CLASS (wvparse), "wvcsrc"), "wvcsrc");
810 case ID_WV_BITSTREAM:
811 case ID_WVX_BITSTREAM:{
812 WavpackStreamReader *stream_reader = gst_wavpack_stream_reader_new ();
818 rid.buffer = GST_BUFFER_DATA (buf);
819 rid.length = GST_BUFFER_SIZE (buf);
823 WavpackOpenFileInputEx (stream_reader, &rid, NULL, error_msg, 0, 0);
828 wvparse->samplerate = WavpackGetSampleRate (wpc);
829 wvparse->channels = WavpackGetNumChannels (wpc);
830 wvparse->total_samples = header->total_samples;
831 if (wvparse->total_samples == (int32_t) - 1)
832 wvparse->total_samples = 0;
834 caps = gst_caps_new_simple ("audio/x-wavpack",
835 "width", G_TYPE_INT, WavpackGetBitsPerSample (wpc),
836 "channels", G_TYPE_INT, wvparse->channels,
837 "rate", G_TYPE_INT, wvparse->samplerate,
838 "framed", G_TYPE_BOOLEAN, TRUE, NULL);
840 channel_mask = WavpackGetChannelMask (wpc);
841 if (channel_mask == 0)
843 gst_wavpack_get_default_channel_mask (wvparse->channels);
845 if (channel_mask != 0) {
846 if (!gst_wavpack_set_channel_layout (caps, channel_mask)) {
847 GST_WARNING_OBJECT (wvparse, "Failed to set channel layout");
848 gst_caps_unref (caps);
850 WavpackCloseFile (wpc);
851 g_free (stream_reader);
857 gst_pad_new_from_template (gst_element_class_get_pad_template
858 (GST_ELEMENT_GET_CLASS (wvparse), "src"), "src");
859 WavpackCloseFile (wpc);
860 g_free (stream_reader);
864 GST_LOG_OBJECT (wvparse, "unhandled ID: 0x%02x", meta.id);
872 if (caps == NULL || wvparse->srcpad == NULL)
875 GST_DEBUG_OBJECT (wvparse, "Added src pad with caps %" GST_PTR_FORMAT, caps);
877 gst_pad_set_query_function (wvparse->srcpad,
878 GST_DEBUG_FUNCPTR (gst_wavpack_parse_src_query));
879 gst_pad_set_query_type_function (wvparse->srcpad,
880 GST_DEBUG_FUNCPTR (gst_wavpack_parse_get_src_query_types));
881 gst_pad_set_event_function (wvparse->srcpad,
882 GST_DEBUG_FUNCPTR (gst_wavpack_parse_src_event));
884 gst_pad_set_caps (wvparse->srcpad, caps);
885 gst_caps_unref (caps);
886 gst_pad_use_fixed_caps (wvparse->srcpad);
888 gst_object_ref (wvparse->srcpad);
889 gst_pad_set_active (wvparse->srcpad, TRUE);
890 gst_element_add_pad (GST_ELEMENT (wvparse), wvparse->srcpad);
891 gst_element_no_more_pads (GST_ELEMENT (wvparse));
897 gst_wavpack_parse_push_buffer (GstWavpackParse * wvparse, GstBuffer * buf,
898 WavpackHeader * header)
900 wvparse->current_offset += header->ckSize + 8;
902 wvparse->segment.last_stop = header->block_index;
904 if (wvparse->need_newsegment) {
905 if (gst_wavpack_parse_send_newsegment (wvparse, FALSE))
906 wvparse->need_newsegment = FALSE;
909 /* send any queued events */
910 if (wvparse->queued_events) {
913 for (l = wvparse->queued_events; l != NULL; l = l->next) {
914 gst_pad_push_event (wvparse->srcpad, GST_EVENT (l->data));
916 g_list_free (wvparse->queued_events);
917 wvparse->queued_events = NULL;
920 if (wvparse->pending_buffer == NULL) {
921 wvparse->pending_buffer = buf;
922 wvparse->pending_offset = header->block_index;
923 } else if (wvparse->pending_offset == header->block_index) {
924 wvparse->pending_buffer = gst_buffer_join (wvparse->pending_buffer, buf);
926 GST_ERROR ("Got incomplete block, dropping");
927 gst_buffer_unref (wvparse->pending_buffer);
928 wvparse->pending_buffer = buf;
929 wvparse->pending_offset = header->block_index;
932 if (!(header->flags & FINAL_BLOCK))
935 buf = wvparse->pending_buffer;
936 wvparse->pending_buffer = NULL;
938 GST_BUFFER_TIMESTAMP (buf) = gst_util_uint64_scale_int (header->block_index,
939 GST_SECOND, wvparse->samplerate);
940 GST_BUFFER_DURATION (buf) = gst_util_uint64_scale_int (header->block_samples,
941 GST_SECOND, wvparse->samplerate);
942 GST_BUFFER_OFFSET (buf) = header->block_index;
943 GST_BUFFER_OFFSET_END (buf) = header->block_index + header->block_samples;
945 if (wvparse->discont || wvparse->next_block_index != header->block_index) {
946 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
947 wvparse->discont = FALSE;
950 wvparse->next_block_index = header->block_index + header->block_samples;
952 gst_buffer_set_caps (buf, GST_PAD_CAPS (wvparse->srcpad));
954 GST_LOG_OBJECT (wvparse, "Pushing buffer with time %" GST_TIME_FORMAT,
955 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
957 return gst_pad_push (wvparse->srcpad, buf);
961 gst_wavpack_parse_find_marker (guint8 * buf, guint size)
966 if (G_UNLIKELY (size < 4))
969 for (i = 0; i < size - 4; i++) {
970 if (memcmp (buf + i, "wvpk", 4) == 0) {
979 gst_wavpack_parse_resync_loop (GstWavpackParse * parse, WavpackHeader * header)
981 GstFlowReturn flow_ret = GST_FLOW_UNEXPECTED;
982 GstBuffer *buf = NULL;
984 /* loop until we have a frame header or reach the end of the stream */
986 guint8 *data, *marker;
990 gst_buffer_unref (buf);
994 if (parse->upstream_length == 0 ||
995 parse->upstream_length <= parse->current_offset) {
996 parse->upstream_length = gst_wavpack_parse_get_upstream_length (parse);
997 if (parse->upstream_length == 0 ||
998 parse->upstream_length <= parse->current_offset) {
1003 len = MIN (parse->upstream_length - parse->current_offset, 2048);
1005 GST_LOG_OBJECT (parse, "offset: %" G_GINT64_FORMAT, parse->current_offset);
1007 buf = gst_wavpack_parse_pull_buffer (parse, parse->current_offset,
1010 /* whatever the problem is, there's nothing more for us to do for now */
1011 if (flow_ret != GST_FLOW_OK)
1014 data = GST_BUFFER_DATA (buf);
1015 size = GST_BUFFER_SIZE (buf);
1017 /* not enough data for a header? */
1018 if (size < sizeof (WavpackHeader))
1021 /* got a header right where we are at now? */
1022 if (gst_wavpack_read_header (header, data))
1025 /* nope, let's see if we can find one */
1026 marker = gst_wavpack_parse_find_marker (data + 1, size - 1);
1029 parse->current_offset += marker - data;
1030 /* do one more loop iteration to make sure we pull enough
1031 * data for a full header, we'll bail out then */
1033 parse->current_offset += len - 4;
1038 gst_buffer_unref (buf);
1044 gst_wavpack_parse_loop (GstElement * element)
1046 GstWavpackParse *parse = GST_WAVPACK_PARSE (element);
1047 GstFlowReturn flow_ret;
1048 WavpackHeader header = { {0,}, 0, };
1049 GstBuffer *buf = NULL;
1051 flow_ret = gst_wavpack_parse_resync_loop (parse, &header);
1053 if (flow_ret != GST_FLOW_OK)
1056 GST_LOG_OBJECT (parse, "Read header at offset %" G_GINT64_FORMAT
1057 ": chunk size = %u+8", parse->current_offset, header.ckSize);
1059 buf = gst_wavpack_parse_pull_buffer (parse, parse->current_offset,
1060 header.ckSize + 8, &flow_ret);
1062 if (flow_ret != GST_FLOW_OK)
1065 if (parse->srcpad == NULL) {
1066 if (!gst_wavpack_parse_create_src_pad (parse, buf, &header)) {
1067 GST_ERROR_OBJECT (parse, "Failed to create src pad");
1068 flow_ret = GST_FLOW_ERROR;
1072 if (header.flags & INITIAL_BLOCK)
1073 gst_wavpack_parse_index_append_entry (parse, parse->current_offset,
1074 header.block_index, header.block_samples);
1076 flow_ret = gst_wavpack_parse_push_buffer (parse, buf, &header);
1077 if (flow_ret != GST_FLOW_OK)
1084 const gchar *reason = gst_flow_get_name (flow_ret);
1086 GST_LOG_OBJECT (parse, "pausing task, reason %s", reason);
1087 gst_pad_pause_task (parse->sinkpad);
1089 if (GST_FLOW_IS_FATAL (flow_ret) || flow_ret == GST_FLOW_NOT_LINKED) {
1090 if (flow_ret == GST_FLOW_UNEXPECTED && parse->srcpad) {
1091 if (parse->segment.flags & GST_SEEK_FLAG_SEGMENT) {
1094 GST_LOG_OBJECT (parse, "Sending segment done");
1096 if ((stop = parse->segment.stop) == -1)
1097 stop = parse->segment.duration;
1099 gst_element_post_message (GST_ELEMENT_CAST (parse),
1100 gst_message_new_segment_done (GST_OBJECT_CAST (parse),
1101 parse->segment.format, stop));
1103 GST_LOG_OBJECT (parse, "Sending EOS, at end of stream");
1104 gst_pad_push_event (parse->srcpad, gst_event_new_eos ());
1107 GST_ELEMENT_ERROR (parse, STREAM, FAILED,
1108 (_("Internal data stream error.")),
1109 ("stream stopped, reason %s", reason));
1111 gst_pad_push_event (parse->srcpad, gst_event_new_eos ());
1119 gst_wavpack_parse_resync_adapter (GstAdapter * adapter)
1121 const guint8 *buf, *marker;
1122 guint avail = gst_adapter_available (adapter);
1127 /* if the marker is at the beginning don't do the expensive search */
1128 buf = gst_adapter_peek (adapter, 4);
1129 if (memcmp (buf, "wvpk", 4) == 0)
1135 /* search for the marker in the complete content of the adapter */
1136 buf = gst_adapter_peek (adapter, avail);
1137 if (buf && (marker = gst_wavpack_parse_find_marker ((guint8 *) buf, avail))) {
1138 gst_adapter_flush (adapter, marker - buf);
1142 /* flush everything except the last 4 bytes. they could contain
1143 * the start of a new marker */
1144 gst_adapter_flush (adapter, avail - 4);
1149 static GstFlowReturn
1150 gst_wavpack_parse_chain (GstPad * pad, GstBuffer * buf)
1152 GstWavpackParse *wvparse = GST_WAVPACK_PARSE (GST_PAD_PARENT (pad));
1153 GstFlowReturn ret = GST_FLOW_OK;
1155 const guint8 *tmp_buf;
1157 if (!wvparse->adapter) {
1158 wvparse->adapter = gst_adapter_new ();
1161 if (GST_BUFFER_IS_DISCONT (buf)) {
1162 gst_adapter_clear (wvparse->adapter);
1163 wvparse->discont = TRUE;
1166 gst_adapter_push (wvparse->adapter, buf);
1168 if (gst_adapter_available (wvparse->adapter) < sizeof (WavpackHeader))
1171 if (!gst_wavpack_parse_resync_adapter (wvparse->adapter))
1174 tmp_buf = gst_adapter_peek (wvparse->adapter, sizeof (WavpackHeader));
1175 gst_wavpack_read_header (&wph, (guint8 *) tmp_buf);
1177 while (gst_adapter_available (wvparse->adapter) >= wph.ckSize + 4 * 1 + 4) {
1179 gst_adapter_take_buffer (wvparse->adapter, wph.ckSize + 4 * 1 + 4);
1182 return GST_FLOW_ERROR;
1184 if (wvparse->srcpad == NULL) {
1185 if (!gst_wavpack_parse_create_src_pad (wvparse, outbuf, &wph)) {
1186 GST_ERROR_OBJECT (wvparse, "Failed to create src pad");
1187 ret = GST_FLOW_ERROR;
1192 ret = gst_wavpack_parse_push_buffer (wvparse, outbuf, &wph);
1194 if (ret != GST_FLOW_OK)
1197 if (gst_adapter_available (wvparse->adapter) >= sizeof (WavpackHeader)) {
1198 tmp_buf = gst_adapter_peek (wvparse->adapter, sizeof (WavpackHeader));
1200 if (!gst_wavpack_parse_resync_adapter (wvparse->adapter))
1203 gst_wavpack_read_header (&wph, (guint8 *) tmp_buf);
1210 static GstStateChangeReturn
1211 gst_wavpack_parse_change_state (GstElement * element, GstStateChange transition)
1213 GstWavpackParse *wvparse = GST_WAVPACK_PARSE (element);
1214 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
1216 switch (transition) {
1217 case GST_STATE_CHANGE_READY_TO_PAUSED:
1218 gst_segment_init (&wvparse->segment, GST_FORMAT_DEFAULT);
1219 wvparse->segment.last_stop = 0;
1224 if (GST_ELEMENT_CLASS (parent_class)->change_state)
1225 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1227 switch (transition) {
1228 case GST_STATE_CHANGE_PAUSED_TO_READY:
1229 gst_wavpack_parse_reset (wvparse);
1239 gst_wavpack_parse_sink_activate (GstPad * sinkpad)
1241 if (gst_pad_check_pull_range (sinkpad)) {
1242 return gst_pad_activate_pull (sinkpad, TRUE);
1244 return gst_pad_activate_push (sinkpad, TRUE);
1249 gst_wavpack_parse_sink_activate_pull (GstPad * sinkpad, gboolean active)
1254 result = gst_pad_start_task (sinkpad,
1255 (GstTaskFunction) gst_wavpack_parse_loop, GST_PAD_PARENT (sinkpad));
1257 result = gst_pad_stop_task (sinkpad);
1264 gst_wavpack_parse_plugin_init (GstPlugin * plugin)
1266 if (!gst_element_register (plugin, "wavpackparse",
1267 GST_RANK_PRIMARY, GST_TYPE_WAVPACK_PARSE)) {
1271 GST_DEBUG_CATEGORY_INIT (gst_wavpack_parse_debug, "wavpack_parse", 0,
1272 "Wavpack file parser");