2 * Copyright (C) 2006 David A. Schleef <ds@schleef.org>
3 * Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
23 /* TODO: - Add locking where appropiate
33 #include <gst/base/gstbasetransform.h>
34 #include <gst/base/gstadapter.h>
36 #include "gstrawparse.h"
38 static void gst_raw_parse_dispose (GObject * object);
40 static gboolean gst_raw_parse_sink_activate (GstPad * sinkpad,
42 static gboolean gst_raw_parse_sink_activatemode (GstPad * sinkpad,
43 GstObject * parent, GstPadMode mode, gboolean active);
44 static void gst_raw_parse_loop (GstElement * element);
45 static GstStateChangeReturn gst_raw_parse_change_state (GstElement * element,
46 GstStateChange transition);
47 static GstFlowReturn gst_raw_parse_chain (GstPad * pad, GstObject * parent,
49 static gboolean gst_raw_parse_sink_event (GstPad * pad, GstObject * parent,
51 static gboolean gst_raw_parse_src_event (GstPad * pad, GstObject * parent,
53 static gboolean gst_raw_parse_src_query (GstPad * pad, GstObject * parent,
55 static gboolean gst_raw_parse_convert (GstRawParse * rp, GstFormat src_format,
56 gint64 src_value, GstFormat dest_format, gint64 * dest_value);
57 static gboolean gst_raw_parse_handle_seek_pull (GstRawParse * rp,
60 static void gst_raw_parse_reset (GstRawParse * rp);
62 static GstStaticPadTemplate gst_raw_parse_sink_pad_template =
63 GST_STATIC_PAD_TEMPLATE ("sink",
68 GST_DEBUG_CATEGORY_STATIC (gst_raw_parse_debug);
69 #define GST_CAT_DEFAULT gst_raw_parse_debug
71 static void gst_raw_parse_class_init (GstRawParseClass * klass);
72 static void gst_raw_parse_init (GstRawParse * clip, GstRawParseClass * g_class);
74 static GstElementClass *parent_class;
76 /* we can't use G_DEFINE_ABSTRACT_TYPE because we need the klass in the _init
77 * method to get to the padtemplates */
79 gst_raw_parse_get_type (void)
81 static volatile gsize raw_parse_type = 0;
83 if (g_once_init_enter (&raw_parse_type)) {
86 _type = g_type_register_static_simple (GST_TYPE_ELEMENT,
87 "GstRawParse", sizeof (GstRawParseClass),
88 (GClassInitFunc) gst_raw_parse_class_init, sizeof (GstRawParse),
89 (GInstanceInitFunc) gst_raw_parse_init, G_TYPE_FLAG_ABSTRACT);
91 g_once_init_leave (&raw_parse_type, _type);
93 return raw_parse_type;
97 gst_raw_parse_class_init (GstRawParseClass * klass)
99 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
100 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
102 parent_class = g_type_class_peek_parent (klass);
104 gobject_class->dispose = gst_raw_parse_dispose;
106 gstelement_class->change_state =
107 GST_DEBUG_FUNCPTR (gst_raw_parse_change_state);
109 gst_element_class_add_pad_template (gstelement_class,
110 gst_static_pad_template_get (&gst_raw_parse_sink_pad_template));
112 GST_DEBUG_CATEGORY_INIT (gst_raw_parse_debug, "rawparse", 0,
117 gst_raw_parse_init (GstRawParse * rp, GstRawParseClass * g_class)
119 GstPadTemplate *src_pad_template;
120 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
123 gst_pad_new_from_static_template (&gst_raw_parse_sink_pad_template,
125 gst_pad_set_chain_function (rp->sinkpad,
126 GST_DEBUG_FUNCPTR (gst_raw_parse_chain));
127 gst_pad_set_event_function (rp->sinkpad,
128 GST_DEBUG_FUNCPTR (gst_raw_parse_sink_event));
129 gst_pad_set_activate_function (rp->sinkpad,
130 GST_DEBUG_FUNCPTR (gst_raw_parse_sink_activate));
131 gst_pad_set_activatemode_function (rp->sinkpad,
132 GST_DEBUG_FUNCPTR (gst_raw_parse_sink_activatemode));
133 gst_element_add_pad (GST_ELEMENT (rp), rp->sinkpad);
135 src_pad_template = gst_element_class_get_pad_template (element_class, "src");
137 if (src_pad_template) {
138 rp->srcpad = gst_pad_new_from_template (src_pad_template, "src");
140 g_warning ("Subclass didn't specify a src pad template");
141 g_assert_not_reached ();
144 gst_pad_set_event_function (rp->srcpad,
145 GST_DEBUG_FUNCPTR (gst_raw_parse_src_event));
146 gst_pad_set_query_function (rp->srcpad,
147 GST_DEBUG_FUNCPTR (gst_raw_parse_src_query));
148 gst_element_add_pad (GST_ELEMENT (rp), rp->srcpad);
150 rp->adapter = gst_adapter_new ();
156 gst_raw_parse_reset (rp);
160 gst_raw_parse_dispose (GObject * object)
162 GstRawParse *rp = GST_RAW_PARSE (object);
165 g_object_unref (rp->adapter);
169 G_OBJECT_CLASS (parent_class)->dispose (object);
173 gst_raw_parse_class_set_src_pad_template (GstRawParseClass * klass,
174 const GstCaps * allowed_caps)
176 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
178 g_return_if_fail (GST_IS_RAW_PARSE_CLASS (klass));
179 g_return_if_fail (allowed_caps != NULL);
180 g_return_if_fail (GST_IS_CAPS (allowed_caps));
182 gst_element_class_add_pad_template (element_class,
183 gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
184 gst_caps_copy (allowed_caps)));
188 gst_raw_parse_class_set_multiple_frames_per_buffer (GstRawParseClass * klass,
189 gboolean multiple_frames)
191 g_return_if_fail (GST_IS_RAW_PARSE_CLASS (klass));
193 klass->multiple_frames_per_buffer = multiple_frames;
197 gst_raw_parse_reset (GstRawParse * rp)
201 rp->negotiated = FALSE;
203 gst_segment_init (&rp->segment, GST_FORMAT_TIME);
204 gst_adapter_clear (rp->adapter);
208 gst_raw_parse_set_src_caps (GstRawParse * rp)
210 GstRawParseClass *rp_class = GST_RAW_PARSE_GET_CLASS (rp);
216 if (rp_class->get_caps) {
217 caps = rp_class->get_caps (rp);
220 ("Subclass doesn't implement get_caps() method, using ANY caps");
221 caps = gst_caps_new_any ();
224 rp->negotiated = gst_pad_set_caps (rp->srcpad, caps);
225 gst_caps_unref (caps);
227 return rp->negotiated;
231 gst_raw_parse_push_buffer (GstRawParse * rp, GstBuffer * buffer)
235 GstRawParseClass *rpclass;
237 rpclass = GST_RAW_PARSE_GET_CLASS (rp);
239 nframes = gst_buffer_get_size (buffer) / rp->framesize;
241 if (rp->segment.rate < 0) {
242 rp->n_frames -= nframes;
246 GST_BUFFER_OFFSET (buffer) = rp->n_frames;
247 GST_BUFFER_OFFSET_END (buffer) = rp->n_frames + nframes;
250 GST_BUFFER_TIMESTAMP (buffer) =
251 gst_util_uint64_scale (rp->n_frames, GST_SECOND * rp->fps_d, rp->fps_n);
252 GST_BUFFER_DURATION (buffer) =
253 gst_util_uint64_scale ((rp->n_frames + nframes) * GST_SECOND, rp->fps_d,
254 rp->fps_n) - GST_BUFFER_TIMESTAMP (buffer);
256 GST_BUFFER_TIMESTAMP (buffer) = rp->segment.start;
257 GST_BUFFER_DURATION (buffer) = GST_CLOCK_TIME_NONE;
260 if (rpclass->set_buffer_flags) {
261 rpclass->set_buffer_flags (rp, buffer);
265 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
269 if (rp->segment.rate >= 0) {
270 rp->offset += gst_buffer_get_size (buffer);
271 rp->n_frames += nframes;
274 rp->segment.position = GST_BUFFER_TIMESTAMP (buffer);
276 GST_LOG_OBJECT (rp, "Pushing buffer with time %" GST_TIME_FORMAT,
277 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
279 ret = gst_pad_push (rp->srcpad, buffer);
285 gst_raw_parse_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
287 GstRawParse *rp = GST_RAW_PARSE (parent);
288 GstFlowReturn ret = GST_FLOW_OK;
289 GstRawParseClass *rp_class = GST_RAW_PARSE_GET_CLASS (rp);
292 if (G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT))) {
293 GST_DEBUG_OBJECT (rp, "received DISCONT buffer");
294 gst_adapter_clear (rp->adapter);
298 if (!gst_raw_parse_set_src_caps (rp))
301 if (rp->start_segment) {
302 GST_DEBUG_OBJECT (rp, "sending start segment");
303 gst_pad_push_event (rp->srcpad, rp->start_segment);
304 rp->start_segment = NULL;
307 gst_adapter_push (rp->adapter, buffer);
309 if (rp_class->multiple_frames_per_buffer) {
310 buffersize = gst_adapter_available (rp->adapter);
311 buffersize -= buffersize % rp->framesize;
313 buffersize = rp->framesize;
316 while (gst_adapter_available (rp->adapter) >= buffersize) {
317 buffer = gst_adapter_take_buffer (rp->adapter, buffersize);
319 ret = gst_raw_parse_push_buffer (rp, buffer);
320 if (ret != GST_FLOW_OK)
330 GST_ERROR_OBJECT (rp, "could not set caps");
331 ret = GST_FLOW_NOT_NEGOTIATED;
337 gst_raw_parse_loop (GstElement * element)
339 GstRawParse *rp = GST_RAW_PARSE (element);
340 GstRawParseClass *rp_class = GST_RAW_PARSE_GET_CLASS (rp);
345 if (G_UNLIKELY (rp->push_stream_start)) {
350 gst_pad_create_stream_id (rp->srcpad, GST_ELEMENT_CAST (rp), NULL);
352 event = gst_event_new_stream_start (stream_id);
353 gst_event_set_group_id (event, gst_util_group_id_next ());
355 GST_DEBUG_OBJECT (rp, "Pushing STREAM_START");
356 gst_pad_push_event (rp->srcpad, event);
357 rp->push_stream_start = FALSE;
361 if (!gst_raw_parse_set_src_caps (rp))
364 if (rp->start_segment) {
365 GST_DEBUG_OBJECT (rp, "sending start segment");
366 gst_pad_push_event (rp->srcpad, rp->start_segment);
367 rp->start_segment = NULL;
370 if (rp_class->multiple_frames_per_buffer && rp->framesize < 4096)
371 size = 4096 - (4096 % rp->framesize);
373 size = rp->framesize;
375 if (rp->segment.rate >= 0) {
376 if (rp->offset + size > rp->upstream_length) {
377 GstFormat fmt = GST_FORMAT_BYTES;
379 if (!gst_pad_peer_query_duration (rp->sinkpad, fmt, &rp->upstream_length)) {
380 GST_WARNING_OBJECT (rp,
381 "Could not get upstream duration, trying to pull frame by frame");
382 size = rp->framesize;
383 } else if (rp->upstream_length < rp->offset + rp->framesize) {
386 } else if (rp->offset + size > rp->upstream_length) {
387 size = rp->upstream_length - rp->offset;
388 size -= size % rp->framesize;
392 if (rp->offset == 0) {
395 } else if (rp->offset < size) {
402 ret = gst_pad_pull_range (rp->sinkpad, rp->offset, size, &buffer);
404 if (ret != GST_FLOW_OK) {
405 GST_DEBUG_OBJECT (rp, "pull_range (%" G_GINT64_FORMAT ", %u) "
406 "failed, flow: %s", rp->offset, size, gst_flow_get_name (ret));
411 if (gst_buffer_get_size (buffer) < size) {
412 GST_DEBUG_OBJECT (rp, "Short read at offset %" G_GINT64_FORMAT
413 ", got only %" G_GSIZE_FORMAT " of %u bytes", rp->offset,
414 gst_buffer_get_size (buffer), size);
416 if (size > rp->framesize) {
417 gst_buffer_set_size (buffer, gst_buffer_get_size (buffer) -
418 gst_buffer_get_size (buffer) % rp->framesize);
420 gst_buffer_unref (buffer);
427 ret = gst_raw_parse_push_buffer (rp, buffer);
428 if (ret != GST_FLOW_OK)
436 GST_ERROR_OBJECT (rp, "could not negotiate caps");
437 ret = GST_FLOW_NOT_NEGOTIATED;
442 const gchar *reason = gst_flow_get_name (ret);
444 GST_LOG_OBJECT (rp, "pausing task, reason %s", reason);
445 gst_pad_pause_task (rp->sinkpad);
447 if (ret == GST_FLOW_EOS) {
448 if (rp->segment.flags & GST_SEEK_FLAG_SEGMENT) {
451 GST_LOG_OBJECT (rp, "Sending segment done");
453 if ((stop = rp->segment.stop) == -1)
454 stop = rp->segment.duration;
456 gst_element_post_message (GST_ELEMENT_CAST (rp),
457 gst_message_new_segment_done (GST_OBJECT_CAST (rp),
458 rp->segment.format, stop));
459 gst_pad_push_event (rp->srcpad,
460 gst_event_new_segment_done (rp->segment.format, stop));
462 GST_LOG_OBJECT (rp, "Sending EOS, at end of stream");
463 gst_pad_push_event (rp->srcpad, gst_event_new_eos ());
465 } else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_EOS) {
466 GST_ELEMENT_ERROR (rp, STREAM, FAILED,
467 ("Internal data stream error."),
468 ("stream stopped, reason %s", reason));
469 gst_pad_push_event (rp->srcpad, gst_event_new_eos ());
476 gst_raw_parse_sink_activate (GstPad * sinkpad, GstObject * parent)
479 gboolean pull_mode = FALSE;
481 query = gst_query_new_scheduling ();
483 if (gst_pad_peer_query (sinkpad, query))
484 pull_mode = gst_query_has_scheduling_mode_with_flags (query,
485 GST_PAD_MODE_PULL, GST_SCHEDULING_FLAG_SEEKABLE);
487 gst_query_unref (query);
490 GST_DEBUG ("going to pull mode");
491 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, TRUE);
493 GST_DEBUG ("going to push (streaming) mode");
494 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
499 gst_raw_parse_sink_activatemode (GstPad * sinkpad, GstObject * parent,
500 GstPadMode mode, gboolean active)
502 GstRawParse *rp = GST_RAW_PARSE (parent);
506 case GST_PAD_MODE_PULL:
511 /* get the duration in bytes */
512 format = GST_FORMAT_BYTES;
513 result = gst_pad_peer_query_duration (sinkpad, format, &duration);
515 GST_DEBUG_OBJECT (rp, "got duration %" GST_TIME_FORMAT,
516 GST_TIME_ARGS (duration));
517 rp->upstream_length = duration;
518 /* convert to time */
519 gst_raw_parse_convert (rp, format, duration, GST_FORMAT_TIME,
522 rp->upstream_length = -1;
525 rp->segment.duration = duration;
527 rp->push_stream_start = TRUE;
529 result = gst_raw_parse_handle_seek_pull (rp, NULL);
532 result = gst_pad_stop_task (sinkpad);
535 case GST_PAD_MODE_PUSH:
543 static GstStateChangeReturn
544 gst_raw_parse_change_state (GstElement * element, GstStateChange transition)
546 GstRawParse *rp = GST_RAW_PARSE (element);
547 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
549 switch (transition) {
550 case GST_STATE_CHANGE_READY_TO_PAUSED:
551 gst_segment_init (&rp->segment, GST_FORMAT_TIME);
552 rp->segment.position = 0;
557 if (GST_ELEMENT_CLASS (parent_class)->change_state)
558 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
560 switch (transition) {
561 case GST_STATE_CHANGE_PAUSED_TO_READY:
562 gst_raw_parse_reset (rp);
572 gst_raw_parse_convert (GstRawParse * rp,
573 GstFormat src_format, gint64 src_value,
574 GstFormat dest_format, gint64 * dest_value)
576 gboolean ret = FALSE;
578 GST_DEBUG ("converting value %" G_GINT64_FORMAT " from %s (%d) to %s (%d)",
579 src_value, gst_format_get_name (src_format), src_format,
580 gst_format_get_name (dest_format), dest_format);
582 if (src_format == dest_format) {
583 *dest_value = src_value;
588 if (src_value == -1) {
594 /* bytes to frames */
595 if (src_format == GST_FORMAT_BYTES && dest_format == GST_FORMAT_DEFAULT) {
596 if (rp->framesize != 0) {
597 *dest_value = gst_util_uint64_scale_int (src_value, 1, rp->framesize);
599 GST_ERROR ("framesize is 0");
606 /* frames to bytes */
607 if (src_format == GST_FORMAT_DEFAULT && dest_format == GST_FORMAT_BYTES) {
608 *dest_value = gst_util_uint64_scale_int (src_value, rp->framesize, 1);
614 if (src_format == GST_FORMAT_TIME && dest_format == GST_FORMAT_DEFAULT) {
615 if (rp->fps_d != 0) {
616 *dest_value = gst_util_uint64_scale (src_value,
617 rp->fps_n, GST_SECOND * rp->fps_d);
619 GST_ERROR ("framerate denominator is 0");
627 if (src_format == GST_FORMAT_DEFAULT && dest_format == GST_FORMAT_TIME) {
628 if (rp->fps_n != 0) {
629 *dest_value = gst_util_uint64_scale (src_value,
630 GST_SECOND * rp->fps_d, rp->fps_n);
632 GST_ERROR ("framerate numerator is 0");
640 if (src_format == GST_FORMAT_TIME && dest_format == GST_FORMAT_BYTES) {
641 if (rp->fps_d != 0) {
642 *dest_value = gst_util_uint64_scale (src_value,
643 rp->fps_n * rp->framesize, GST_SECOND * rp->fps_d);
645 GST_ERROR ("framerate denominator is 0");
653 if (src_format == GST_FORMAT_BYTES && dest_format == GST_FORMAT_TIME) {
654 if (rp->fps_n != 0 && rp->framesize != 0) {
655 *dest_value = gst_util_uint64_scale (src_value,
656 GST_SECOND * rp->fps_d, rp->fps_n * rp->framesize);
658 GST_ERROR ("framerate denominator and/or framesize is 0");
666 GST_DEBUG ("ret=%d result %" G_GINT64_FORMAT, ret, *dest_value);
673 gst_raw_parse_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
675 GstRawParse *rp = GST_RAW_PARSE (parent);
678 switch (GST_EVENT_TYPE (event)) {
680 case GST_EVENT_FLUSH_STOP:
681 /* Only happens in push mode */
682 gst_raw_parse_reset (rp);
683 ret = gst_pad_push_event (rp->srcpad, event);
685 case GST_EVENT_SEGMENT:
689 /* Only happens in push mode */
691 gst_event_copy_segment (event, &segment);
693 if (segment.format != GST_FORMAT_TIME) {
694 gst_event_unref (event);
696 segment.format = GST_FORMAT_TIME;
699 gst_raw_parse_convert (rp, segment.format, segment.start,
700 GST_FORMAT_TIME, (gint64 *) & segment.start);
701 ret &= gst_raw_parse_convert (rp, segment.format, segment.time,
702 GST_FORMAT_TIME, (gint64 *) & segment.time);
703 ret &= gst_raw_parse_convert (rp, segment.format, segment.stop,
704 GST_FORMAT_TIME, (gint64 *) & segment.stop);
706 GST_ERROR_OBJECT (rp,
707 "Failed converting to GST_FORMAT_TIME format (%d)",
712 event = gst_event_new_segment (&segment);
715 gst_segment_copy_into (&segment, &rp->segment);
717 if (rp->start_segment)
718 gst_event_unref (rp->start_segment);
719 rp->start_segment = event;
724 ret = gst_pad_event_default (pad, parent, event);
733 gst_raw_parse_handle_seek_push (GstRawParse * rp, GstEvent * event)
738 GstSeekType start_type, stop_type;
740 gboolean ret = FALSE;
742 gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
745 /* can't seek backwards yet */
749 /* First try if upstream handles the seek */
750 ret = gst_pad_push_event (rp->sinkpad, event);
754 /* Otherwise convert to bytes and push upstream */
755 if (format == GST_FORMAT_TIME || format == GST_FORMAT_DEFAULT) {
756 ret = gst_raw_parse_convert (rp, format, start, GST_FORMAT_BYTES, &start);
757 ret &= gst_raw_parse_convert (rp, format, stop, GST_FORMAT_BYTES, &stop);
760 /* Seek on a frame boundary */
761 start -= start % rp->framesize;
763 stop += rp->framesize - stop % rp->framesize;
766 gst_event_new_seek (rate, GST_FORMAT_BYTES, flags, start_type,
767 start, stop_type, stop);
769 ret = gst_pad_push_event (rp->sinkpad, event);
771 GST_DEBUG_OBJECT (rp, "Seek failed: couldn't convert to byte positions");
774 GST_DEBUG_OBJECT (rp,
775 "seeking is only supported in TIME or DEFAULT format");
782 GST_DEBUG_OBJECT (rp, "Seek failed: negative rates not supported yet");
788 gst_raw_parse_handle_seek_pull (GstRawParse * rp, GstEvent * event)
793 GstSeekType start_type, stop_type;
796 gboolean ret = FALSE;
798 GstSegment seeksegment;
801 gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
804 /* convert input offsets to time */
805 ret = gst_raw_parse_convert (rp, format, start, GST_FORMAT_TIME, &start);
806 ret &= gst_raw_parse_convert (rp, format, stop, GST_FORMAT_TIME, &stop);
810 GST_DEBUG_OBJECT (rp, "converted start - stop to time");
812 format = GST_FORMAT_TIME;
814 gst_event_unref (event);
816 format = GST_FORMAT_TIME;
820 flush = ((flags & GST_SEEK_FLAG_FLUSH) != 0);
822 /* start flushing up and downstream so that the loop function pauses and we
823 * can acquire the STREAM_LOCK. */
825 GST_LOG_OBJECT (rp, "flushing");
826 gst_pad_push_event (rp->sinkpad, gst_event_new_flush_start ());
827 gst_pad_push_event (rp->srcpad, gst_event_new_flush_start ());
829 GST_LOG_OBJECT (rp, "pause task");
830 gst_pad_pause_task (rp->sinkpad);
833 GST_PAD_STREAM_LOCK (rp->sinkpad);
835 memcpy (&seeksegment, &rp->segment, sizeof (GstSegment));
838 /* configure the seek values */
839 gst_segment_do_seek (&seeksegment, rate, format, flags,
840 start_type, start, stop_type, stop, NULL);
843 /* get the desired position */
844 last_stop = seeksegment.position;
846 GST_LOG_OBJECT (rp, "seeking to %" GST_TIME_FORMAT,
847 GST_TIME_ARGS (last_stop));
849 /* convert the desired position to bytes */
851 gst_raw_parse_convert (rp, format, last_stop, GST_FORMAT_BYTES,
854 /* prepare for streaming */
856 GST_LOG_OBJECT (rp, "stop flush");
857 gst_pad_push_event (rp->sinkpad, gst_event_new_flush_stop (TRUE));
858 gst_pad_push_event (rp->srcpad, gst_event_new_flush_stop (TRUE));
864 /* Seek on a frame boundary */
865 last_stop -= last_stop % rp->framesize;
867 rp->offset = last_stop;
868 rp->n_frames = last_stop / rp->framesize;
870 GST_LOG_OBJECT (rp, "seeking to bytes %" G_GINT64_FORMAT, last_stop);
872 memcpy (&rp->segment, &seeksegment, sizeof (GstSegment));
874 if (rp->segment.flags & GST_SEEK_FLAG_SEGMENT) {
875 gst_element_post_message (GST_ELEMENT_CAST (rp),
876 gst_message_new_segment_start (GST_OBJECT_CAST (rp),
877 rp->segment.format, rp->segment.position));
880 /* for deriving a stop position for the playback segment from the seek
881 * segment, we must take the duration when the stop is not set */
882 if ((stop = rp->segment.stop) == -1)
883 stop = rp->segment.duration;
885 GST_DEBUG_OBJECT (rp, "preparing newsegment from %" G_GINT64_FORMAT
886 " to %" G_GINT64_FORMAT, rp->segment.start, stop);
888 /* now replace the old segment so that we send it in the stream thread the
889 * next time it is scheduled. */
890 if (rp->start_segment)
891 gst_event_unref (rp->start_segment);
892 rp->start_segment = gst_event_new_segment (&rp->segment);
896 GST_LOG_OBJECT (rp, "start streaming");
897 gst_pad_start_task (rp->sinkpad, (GstTaskFunction) gst_raw_parse_loop, rp,
900 GST_PAD_STREAM_UNLOCK (rp->sinkpad);
907 GST_DEBUG_OBJECT (rp, "Seek failed: couldn't convert to byte positions");
913 gst_raw_parse_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
915 GstRawParse *rp = GST_RAW_PARSE (parent);
918 switch (GST_EVENT_TYPE (event)) {
920 if (rp->mode == GST_PAD_MODE_PUSH)
921 ret = gst_raw_parse_handle_seek_push (rp, event);
923 ret = gst_raw_parse_handle_seek_pull (rp, event);
926 ret = gst_pad_event_default (pad, parent, event);
934 gst_raw_parse_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
936 GstRawParse *rp = GST_RAW_PARSE (parent);
937 gboolean ret = FALSE;
939 GST_DEBUG ("src_query %s", gst_query_type_get_name (GST_QUERY_TYPE (query)));
941 switch (GST_QUERY_TYPE (query)) {
942 case GST_QUERY_POSITION:
947 GST_LOG ("query position");
949 gst_query_parse_position (query, &format, NULL);
951 time = rp->segment.position;
952 ret = gst_raw_parse_convert (rp, GST_FORMAT_TIME, time, format, &value);
954 gst_query_set_position (query, format, value);
958 case GST_QUERY_DURATION:{
963 GST_LOG ("query duration");
964 ret = gst_pad_peer_query (rp->sinkpad, query);
968 gst_query_parse_duration (query, &format, NULL);
969 /* We only handle TIME and DEFAULT format */
970 if (format != GST_FORMAT_TIME && format != GST_FORMAT_DEFAULT)
973 bquery = gst_query_new_duration (GST_FORMAT_BYTES);
974 ret = gst_pad_peer_query (rp->sinkpad, bquery);
976 gst_query_unref (bquery);
980 gst_query_parse_duration (bquery, NULL, &duration);
981 gst_query_unref (bquery);
984 gst_raw_parse_convert (rp, GST_FORMAT_BYTES, duration, format,
987 gst_query_set_duration (query, format, duration);
991 case GST_QUERY_CONVERT:
993 GstFormat src_fmt, dest_fmt;
994 gint64 src_val, dest_val;
996 GST_LOG ("query convert");
998 gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
999 ret = gst_raw_parse_convert (rp, src_fmt, src_val, dest_fmt, &dest_val);
1002 gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
1005 case GST_QUERY_SEEKING:{
1009 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
1010 if (fmt != GST_FORMAT_TIME && fmt != GST_FORMAT_DEFAULT
1011 && fmt != GST_FORMAT_BYTES) {
1012 gst_query_set_seeking (query, fmt, FALSE, -1, -1);
1013 } else if (rp->mode == GST_PAD_MODE_PUSH) {
1014 GstQuery *peerquery = gst_query_new_seeking (GST_FORMAT_BYTES);
1017 seekable = gst_pad_peer_query (rp->sinkpad, peerquery);
1019 gst_query_parse_seeking (peerquery, NULL, &seekable, NULL, NULL);
1021 gst_query_unref (peerquery);
1022 gst_query_set_seeking (query, fmt, seekable, seekable ? 0 : -1, -1);
1024 gst_query_set_seeking (query, fmt, TRUE, 0, -1);
1029 /* else forward upstream */
1030 ret = gst_pad_query_default (pad, parent, query);
1040 GST_DEBUG_OBJECT (rp, "query failed");
1046 gst_raw_parse_set_framesize (GstRawParse * rp, int framesize)
1048 g_return_if_fail (GST_IS_RAW_PARSE (rp));
1049 g_return_if_fail (!rp->negotiated);
1051 GST_DEBUG_OBJECT (rp, "framesize %d", framesize);
1052 rp->framesize = framesize;
1056 gst_raw_parse_set_fps (GstRawParse * rp, int fps_n, int fps_d)
1058 g_return_if_fail (GST_IS_RAW_PARSE (rp));
1059 g_return_if_fail (!rp->negotiated);
1066 gst_raw_parse_get_fps (GstRawParse * rp, int *fps_n, int *fps_d)
1068 g_return_if_fail (GST_IS_RAW_PARSE (rp));
1077 gst_raw_parse_is_negotiated (GstRawParse * rp)
1079 g_return_val_if_fail (GST_IS_RAW_PARSE (rp), FALSE);
1081 return rp->negotiated;