static gboolean
_send_event (GstElement * element, GstEvent * event)
{
GstAggregator *self = GST_AGGREGATOR (element);
GST_STATE_LOCK (element);
if (GST_EVENT_TYPE (event) == GST_EVENT_SEEK &&
GST_STATE (element) < GST_STATE_PAUSED) {
gdouble rate;
GstFormat fmt;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
gst_event_parse_seek (event, &rate, &fmt, &flags, &start_type,
&start, &stop_type, &stop);
gst_segment_do_seek (&self->segment, rate, fmt, flags, start_type, start,
stop_type, stop, NULL);
self->priv->seqnum = gst_event_get_seqnum (event);
GST_DEBUG_OBJECT (element, "Storing segment %" GST_PTR_FORMAT, event);
}
GST_STATE_UNLOCK (element);
return GST_ELEMENT_CLASS (aggregator_parent_class)->send_event (element,
event);
}
static gboolean
gst_rtmp_src_prepare_seek_segment (GstBaseSrc * basesrc, GstEvent * event,
GstSegment * segment)
{
GstRTMPSrc *src;
GstSeekType cur_type, stop_type;
gint64 cur, stop;
GstSeekFlags flags;
GstFormat format;
gdouble rate;
src = GST_RTMP_SRC (basesrc);
gst_event_parse_seek (event, &rate, &format, &flags,
&cur_type, &cur, &stop_type, &stop);
if (!src->seekable) {
GST_LOG_OBJECT (src, "Not a seekable stream");
return FALSE;
}
if (!src->rtmp) {
GST_LOG_OBJECT (src, "Not connected yet");
return FALSE;
}
if (format != GST_FORMAT_TIME) {
GST_LOG_OBJECT (src, "Seeking only supported in TIME format");
return FALSE;
}
if (stop_type != GST_SEEK_TYPE_NONE) {
GST_LOG_OBJECT (src, "Setting a stop position is not supported");
return FALSE;
}
gst_segment_init (segment, GST_FORMAT_TIME);
gst_segment_do_seek (segment, rate, format, flags, cur_type, cur, stop_type,
stop, NULL);
return TRUE;
}
static gboolean
gst_mms_prepare_seek_segment (GstBaseSrc * src, GstEvent * event,
GstSegment * segment)
{
GstSeekType cur_type, stop_type;
gint64 cur, stop;
GstSeekFlags flags;
GstFormat seek_format;
gdouble rate;
gst_event_parse_seek (event, &rate, &seek_format, &flags,
&cur_type, &cur, &stop_type, &stop);
if (seek_format != GST_FORMAT_BYTES && seek_format != GST_FORMAT_TIME) {
GST_LOG_OBJECT (src, "Only byte or time seeking is supported");
return FALSE;
}
if (stop_type != GST_SEEK_TYPE_NONE) {
GST_LOG_OBJECT (src, "Stop seeking not supported");
return FALSE;
}
if (cur_type != GST_SEEK_TYPE_NONE && cur_type != GST_SEEK_TYPE_SET) {
GST_LOG_OBJECT (src, "Only absolute seeking is supported");
return FALSE;
}
/* We would like to convert from GST_FORMAT_TIME to GST_FORMAT_BYTES here
when needed, but we cannot as to do that we need to actually do the seek,
so we handle this in do_seek instead. */
/* FIXME implement relative seeking, we could do any needed relevant
seeking calculations here (in seek_format metrics), before the re-init
of the segment. */
gst_segment_init (segment, seek_format);
gst_segment_do_seek (segment, rate, seek_format, flags, cur_type, cur,
stop_type, stop, NULL);
return TRUE;
}
static gboolean
_do_seek (GstAggregator * self, GstEvent * event)
{
gdouble rate;
GstFormat fmt;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
gboolean flush;
gboolean res;
GstAggregatorPrivate *priv = self->priv;
gst_event_parse_seek (event, &rate, &fmt, &flags, &start_type,
&start, &stop_type, &stop);
GST_INFO_OBJECT (self, "starting SEEK");
flush = flags & GST_SEEK_FLAG_FLUSH;
if (flush) {
g_atomic_int_set (&priv->pending_flush_start, TRUE);
g_atomic_int_set (&priv->flush_seeking, TRUE);
}
gst_segment_do_seek (&self->segment, rate, fmt, flags, start_type, start,
stop_type, stop, NULL);
/* forward the seek upstream */
res = _forward_event_to_all_sinkpads (self, event, flush);
event = NULL;
if (!res) {
g_atomic_int_set (&priv->flush_seeking, FALSE);
g_atomic_int_set (&priv->pending_flush_start, FALSE);
}
GST_INFO_OBJECT (self, "seek done, result: %d", res);
return res;
}
static gboolean
gst_mms_do_seek (GstBaseSrc * src, GstSegment * segment)
{
gint64 start;
GstMMS *mmssrc = GST_MMS (src);
if (segment->format == GST_FORMAT_TIME) {
if (!mmsx_time_seek (NULL, mmssrc->connection,
(double) segment->start / GST_SECOND)) {
GST_LOG_OBJECT (mmssrc, "mmsx_time_seek() failed");
return FALSE;
}
start = mmsx_get_current_pos (mmssrc->connection);
GST_INFO_OBJECT (mmssrc, "sought to %" GST_TIME_FORMAT ", offset after "
"seek: %" G_GINT64_FORMAT, GST_TIME_ARGS (segment->start), start);
} else if (segment->format == GST_FORMAT_BYTES) {
start = mmsx_seek (NULL, mmssrc->connection, segment->start, SEEK_SET);
/* mmsx_seek will close and reopen the connection when seeking with the
mmsh protocol, if the reopening fails this is indicated with -1 */
if (start == -1) {
GST_DEBUG_OBJECT (mmssrc, "connection broken during seek");
return FALSE;
}
GST_INFO_OBJECT (mmssrc, "sought to: %" G_GINT64_FORMAT " bytes, "
"result: %" G_GINT64_FORMAT, segment->start, start);
} else {
GST_DEBUG_OBJECT (mmssrc, "unsupported seek segment format: %s",
GST_STR_NULL (gst_format_get_name (segment->format)));
return FALSE;
}
gst_segment_init (segment, GST_FORMAT_BYTES);
gst_segment_do_seek (segment, segment->rate, GST_FORMAT_BYTES,
GST_SEEK_FLAG_NONE, GST_SEEK_TYPE_SET, start, GST_SEEK_TYPE_NONE,
segment->stop, NULL);
return TRUE;
}
static gboolean
gst_musepackdec_handle_seek_event (GstMusepackDec * dec, GstEvent * event)
{
GstSeekType start_type, stop_type;
GstSeekFlags flags;
GstSegment segment;
GstFormat format;
gboolean flush;
gdouble rate;
gint64 start, stop;
gint samplerate;
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
if (format != GST_FORMAT_TIME && format != GST_FORMAT_DEFAULT) {
GST_DEBUG_OBJECT (dec, "seek failed: only TIME or DEFAULT format allowed");
return FALSE;
}
samplerate = g_atomic_int_get (&dec->rate);
if (format == GST_FORMAT_TIME) {
if (start_type != GST_SEEK_TYPE_NONE)
start = gst_util_uint64_scale_int (start, samplerate, GST_SECOND);
if (stop_type != GST_SEEK_TYPE_NONE)
stop = gst_util_uint64_scale_int (stop, samplerate, GST_SECOND);
}
flush = ((flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH);
if (flush)
gst_pad_push_event (dec->srcpad, gst_event_new_flush_start ());
else
gst_pad_pause_task (dec->sinkpad); /* not _stop_task()? */
GST_PAD_STREAM_LOCK (dec->sinkpad);
/* operate on segment copy until we know the seek worked */
segment = dec->segment;
gst_segment_do_seek (&segment, rate, GST_FORMAT_DEFAULT,
flags, start_type, start, stop_type, stop, NULL);
gst_pad_push_event (dec->sinkpad, gst_event_new_flush_stop (TRUE));
GST_DEBUG_OBJECT (dec, "segment: [%" G_GINT64_FORMAT "-%" G_GINT64_FORMAT
"] = [%" GST_TIME_FORMAT "-%" GST_TIME_FORMAT "]",
segment.start, segment.stop,
GST_TIME_ARGS (segment.start * GST_SECOND / dec->rate),
GST_TIME_ARGS (segment.stop * GST_SECOND / dec->rate));
GST_DEBUG_OBJECT (dec, "performing seek to sample %" G_GINT64_FORMAT,
segment.start);
if (segment.start >= segment.duration) {
GST_WARNING_OBJECT (dec, "seek out of bounds");
goto failed;
}
if (mpc_demux_seek_sample (dec->d, segment.start) != MPC_STATUS_OK)
goto failed;
if ((flags & GST_SEEK_FLAG_SEGMENT) == GST_SEEK_FLAG_SEGMENT) {
GST_DEBUG_OBJECT (dec, "posting SEGMENT_START message");
gst_element_post_message (GST_ELEMENT (dec),
gst_message_new_segment_start (GST_OBJECT (dec), GST_FORMAT_TIME,
gst_util_uint64_scale_int (segment.start, GST_SECOND, dec->rate)));
}
if (flush) {
gst_pad_push_event (dec->srcpad, gst_event_new_flush_stop (TRUE));
}
segment.position = segment.start;
dec->segment = segment;
gst_musepackdec_send_newsegment (dec);
GST_DEBUG_OBJECT (dec, "seek successful");
gst_pad_start_task (dec->sinkpad,
(GstTaskFunction) gst_musepackdec_loop, dec->sinkpad, NULL);
GST_PAD_STREAM_UNLOCK (dec->sinkpad);
return TRUE;
failed:
{
GST_WARNING_OBJECT (dec, "seek failed");
GST_PAD_STREAM_UNLOCK (dec->sinkpad);
return FALSE;
}
}
static gboolean
gst_type_find_element_seek (GstTypeFindElement * typefind, GstEvent * event)
{
GstSeekFlags flags;
GstSeekType start_type, stop_type;
GstFormat format;
gboolean flush;
gdouble rate;
gint64 start, stop;
GstSegment seeksegment = { 0, };
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
/* we can only seek on bytes */
if (format != GST_FORMAT_BYTES) {
GST_DEBUG_OBJECT (typefind, "Can only seek on BYTES");
return FALSE;
}
/* copy segment, we need this because we still need the old
* segment when we close the current segment. */
memcpy (&seeksegment, &typefind->segment, sizeof (GstSegment));
GST_DEBUG_OBJECT (typefind, "configuring seek");
gst_segment_do_seek (&seeksegment, rate, format, flags,
start_type, start, stop_type, stop, NULL);
flush = ! !(flags & GST_SEEK_FLAG_FLUSH);
GST_DEBUG_OBJECT (typefind, "New segment %" GST_SEGMENT_FORMAT, &seeksegment);
if (flush) {
GST_DEBUG_OBJECT (typefind, "Starting flush");
gst_pad_push_event (typefind->sink, gst_event_new_flush_start ());
gst_pad_push_event (typefind->src, gst_event_new_flush_start ());
} else {
GST_DEBUG_OBJECT (typefind, "Non-flushing seek, pausing task");
gst_pad_pause_task (typefind->sink);
}
/* now grab the stream lock so that streaming cannot continue, for
* non flushing seeks when the element is in PAUSED this could block
* forever. */
GST_DEBUG_OBJECT (typefind, "Waiting for streaming to stop");
GST_PAD_STREAM_LOCK (typefind->sink);
if (flush) {
GST_DEBUG_OBJECT (typefind, "Stopping flush");
gst_pad_push_event (typefind->sink, gst_event_new_flush_stop (TRUE));
gst_pad_push_event (typefind->src, gst_event_new_flush_stop (TRUE));
}
/* now update the real segment info */
GST_DEBUG_OBJECT (typefind, "Committing new seek segment");
memcpy (&typefind->segment, &seeksegment, sizeof (GstSegment));
typefind->offset = typefind->segment.start;
/* notify start of new segment */
if (typefind->segment.flags & GST_SEGMENT_FLAG_SEGMENT) {
GstMessage *msg;
msg = gst_message_new_segment_start (GST_OBJECT (typefind),
GST_FORMAT_BYTES, typefind->segment.start);
gst_element_post_message (GST_ELEMENT (typefind), msg);
}
typefind->need_segment = TRUE;
/* restart our task since it might have been stopped when we did the
* flush. */
gst_pad_start_task (typefind->sink,
(GstTaskFunction) gst_type_find_element_loop, typefind->sink, NULL);
/* streaming can continue now */
GST_PAD_STREAM_UNLOCK (typefind->sink);
return TRUE;
}
static gboolean
gst_wildmidi_do_seek (GstWildmidi * wildmidi, GstEvent * event)
{
gdouble rate;
GstFormat src_format, dst_format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
gboolean flush, update;
#ifdef HAVE_WILDMIDI_0_2_2
gboolean accurate;
#endif
gboolean res;
unsigned long int sample;
GstSegment *segment;
if (!wildmidi->song)
return FALSE;
gst_event_parse_seek (event, &rate, &src_format, &flags,
&start_type, &start, &stop_type, &stop);
/* convert the input format to samples */
dst_format = GST_FORMAT_DEFAULT;
res = TRUE;
if (start_type != GST_SEEK_TYPE_NONE) {
res =
gst_wildmidi_src_convert (wildmidi, src_format, start, &dst_format,
&start);
}
if (res && stop_type != GST_SEEK_TYPE_NONE) {
res =
gst_wildmidi_src_convert (wildmidi, src_format, stop, &dst_format,
&stop);
}
/* unsupported format */
if (!res)
return res;
flush = ((flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH);
#ifdef HAVE_WILDMIDI_0_2_2
accurate = ((flags & GST_SEEK_FLAG_ACCURATE) == GST_SEEK_FLAG_ACCURATE);
#endif
if (flush) {
GST_DEBUG ("performing flush");
gst_pad_push_event (wildmidi->srcpad, gst_event_new_flush_start ());
} else {
gst_pad_stop_task (wildmidi->sinkpad);
}
segment = wildmidi->o_segment;
GST_PAD_STREAM_LOCK (wildmidi->sinkpad);
if (flush) {
gst_pad_push_event (wildmidi->srcpad, gst_event_new_flush_stop (TRUE));
}
/* update the segment now */
gst_segment_do_seek (segment, rate, dst_format, flags,
start_type, start, stop_type, stop, &update);
/* we need to seek to position in the segment now, sample will be updated */
sample = segment->position;
GST_OBJECT_LOCK (wildmidi);
#ifdef HAVE_WILDMIDI_0_2_2
if (accurate) {
WildMidi_SampledSeek (wildmidi->song, &sample);
} else {
WildMidi_FastSeek (wildmidi->song, &sample);
}
#else
WildMidi_FastSeek (wildmidi->song, &sample);
#endif
GST_OBJECT_UNLOCK (wildmidi);
segment->start = segment->time = segment->position = sample;
gst_pad_push_event (wildmidi->srcpad,
gst_wildmidi_get_new_segment_event (wildmidi, GST_FORMAT_TIME));
gst_pad_start_task (wildmidi->sinkpad,
(GstTaskFunction) gst_wildmidi_loop, wildmidi->sinkpad, NULL);
wildmidi->discont = TRUE;
GST_PAD_STREAM_UNLOCK (wildmidi->sinkpad);
GST_DEBUG ("seek done");
return TRUE;
}
static gboolean
gst_hls_demux_seek (GstAdaptiveDemux * demux, GstEvent * seek)
{
GstHLSDemux *hlsdemux = GST_HLS_DEMUX_CAST (demux);
GstFormat format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
gdouble rate;
GList *walk, *current_file = NULL;
GstClockTime current_pos, target_pos;
gint64 current_sequence;
GstM3U8MediaFile *file;
guint64 bitrate;
gboolean snap_before, snap_after, snap_nearest, keyunit;
gboolean reverse;
gst_event_parse_seek (seek, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
bitrate = gst_hls_demux_get_bitrate (hlsdemux);
/* properly cleanup pending decryption status */
if (flags & GST_SEEK_FLAG_FLUSH) {
gst_hls_demux_clear_pending_data (hlsdemux);
}
/* Use I-frame variants for trick modes */
if (hlsdemux->client->main->iframe_lists && rate < -1.0
&& demux->segment.rate >= -1.0 && demux->segment.rate <= 1.0) {
GError *err = NULL;
GST_M3U8_CLIENT_LOCK (hlsdemux->client);
/* Switch to I-frame variant */
hlsdemux->client->main->current_variant =
hlsdemux->client->main->iframe_lists;
GST_M3U8_CLIENT_UNLOCK (hlsdemux->client);
gst_m3u8_client_set_current (hlsdemux->client,
hlsdemux->client->main->iframe_lists->data);
gst_uri_downloader_reset (demux->downloader);
if (!gst_hls_demux_update_playlist (hlsdemux, FALSE, &err)) {
GST_ELEMENT_ERROR_FROM_ERROR (hlsdemux, "Could not switch playlist", err);
return FALSE;
}
//hlsdemux->discont = TRUE;
hlsdemux->do_typefind = TRUE;
gst_hls_demux_change_playlist (hlsdemux, bitrate / ABS (rate), NULL);
} else if (rate > -1.0 && rate <= 1.0 && (demux->segment.rate < -1.0
|| demux->segment.rate > 1.0)) {
GError *err = NULL;
GST_M3U8_CLIENT_LOCK (hlsdemux->client);
/* Switch to normal variant */
hlsdemux->client->main->current_variant = hlsdemux->client->main->lists;
GST_M3U8_CLIENT_UNLOCK (hlsdemux->client);
gst_m3u8_client_set_current (hlsdemux->client,
hlsdemux->client->main->lists->data);
gst_uri_downloader_reset (demux->downloader);
if (!gst_hls_demux_update_playlist (hlsdemux, FALSE, &err)) {
GST_ELEMENT_ERROR_FROM_ERROR (hlsdemux, "Could not switch playlist", err);
return FALSE;
}
//hlsdemux->discont = TRUE;
hlsdemux->do_typefind = TRUE;
/* TODO why not continue using the same? that was being used up to now? */
gst_hls_demux_change_playlist (hlsdemux, bitrate, NULL);
}
GST_M3U8_CLIENT_LOCK (hlsdemux->client);
file = GST_M3U8_MEDIA_FILE (hlsdemux->client->current->files->data);
current_sequence = file->sequence;
current_pos = 0;
reverse = rate < 0;
target_pos = reverse ? stop : start;
/* Snap to segment boundary. Improves seek performance on slow machines. */
keyunit = ! !(flags & GST_SEEK_FLAG_KEY_UNIT);
snap_nearest =
(flags & GST_SEEK_FLAG_SNAP_NEAREST) == GST_SEEK_FLAG_SNAP_NEAREST;
snap_before = ! !(flags & GST_SEEK_FLAG_SNAP_BEFORE);
snap_after = ! !(flags & GST_SEEK_FLAG_SNAP_AFTER);
/* FIXME: Here we need proper discont handling */
for (walk = hlsdemux->client->current->files; walk; walk = walk->next) {
file = walk->data;
current_sequence = file->sequence;
current_file = walk;
if ((!reverse && snap_after) || snap_nearest) {
if (current_pos >= target_pos)
break;
if (snap_nearest && target_pos - current_pos < file->duration / 2)
break;
} else if (reverse && snap_after) {
/* check if the next fragment is our target, in this case we want to
* start from the previous fragment */
GstClockTime next_pos = current_pos + file->duration;
if (next_pos <= target_pos && target_pos < next_pos + file->duration) {
break;
}
} else if (current_pos <= target_pos
&& target_pos < current_pos + file->duration) {
break;
}
current_pos += file->duration;
}
if (walk == NULL) {
GST_DEBUG_OBJECT (demux, "seeking further than track duration");
current_sequence++;
}
GST_DEBUG_OBJECT (demux, "seeking to sequence %u", (guint) current_sequence);
hlsdemux->reset_pts = TRUE;
hlsdemux->client->sequence = current_sequence;
hlsdemux->client->current_file =
current_file ? current_file : hlsdemux->client->current->files;
hlsdemux->client->sequence_position = current_pos;
GST_M3U8_CLIENT_UNLOCK (hlsdemux->client);
/* Play from the end of the current selected segment */
if (reverse && (snap_before || snap_after || snap_nearest))
current_pos += file->duration;
if (keyunit || snap_before || snap_after || snap_nearest) {
if (!reverse)
gst_segment_do_seek (&demux->segment, rate, format, flags, start_type,
current_pos, stop_type, stop, NULL);
else
gst_segment_do_seek (&demux->segment, rate, format, flags, start_type,
start, stop_type, current_pos, NULL);
}
return TRUE;
}
static gboolean
gst_raw_parse_handle_seek_pull (GstRawParse * rp, GstEvent * event)
{
gdouble rate;
GstFormat format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
gint64 last_stop;
gboolean ret = FALSE;
gboolean flush;
GstSegment seeksegment;
if (event) {
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
/* convert input offsets to time */
ret = gst_raw_parse_convert (rp, format, start, GST_FORMAT_TIME, &start);
ret &= gst_raw_parse_convert (rp, format, stop, GST_FORMAT_TIME, &stop);
if (!ret)
goto convert_failed;
GST_DEBUG_OBJECT (rp, "converted start - stop to time");
format = GST_FORMAT_TIME;
gst_event_unref (event);
} else {
format = GST_FORMAT_TIME;
flags = 0;
}
flush = ((flags & GST_SEEK_FLAG_FLUSH) != 0);
/* start flushing up and downstream so that the loop function pauses and we
* can acquire the STREAM_LOCK. */
if (flush) {
GST_LOG_OBJECT (rp, "flushing");
gst_pad_push_event (rp->sinkpad, gst_event_new_flush_start ());
gst_pad_push_event (rp->srcpad, gst_event_new_flush_start ());
} else {
GST_LOG_OBJECT (rp, "pause task");
gst_pad_pause_task (rp->sinkpad);
}
GST_PAD_STREAM_LOCK (rp->sinkpad);
memcpy (&seeksegment, &rp->segment, sizeof (GstSegment));
if (event) {
/* configure the seek values */
gst_segment_do_seek (&seeksegment, rate, format, flags,
start_type, start, stop_type, stop, NULL);
}
/* get the desired position */
last_stop = seeksegment.position;
GST_LOG_OBJECT (rp, "seeking to %" GST_TIME_FORMAT,
GST_TIME_ARGS (last_stop));
/* convert the desired position to bytes */
ret =
gst_raw_parse_convert (rp, format, last_stop, GST_FORMAT_BYTES,
&last_stop);
/* prepare for streaming */
if (flush) {
GST_LOG_OBJECT (rp, "stop flush");
gst_pad_push_event (rp->sinkpad, gst_event_new_flush_stop (TRUE));
gst_pad_push_event (rp->srcpad, gst_event_new_flush_stop (TRUE));
}
if (ret) {
/* seek done */
/* Seek on a frame boundary */
last_stop -= last_stop % rp->framesize;
rp->offset = last_stop;
rp->n_frames = last_stop / rp->framesize;
GST_LOG_OBJECT (rp, "seeking to bytes %" G_GINT64_FORMAT, last_stop);
memcpy (&rp->segment, &seeksegment, sizeof (GstSegment));
if (rp->segment.flags & GST_SEEK_FLAG_SEGMENT) {
gst_element_post_message (GST_ELEMENT_CAST (rp),
gst_message_new_segment_start (GST_OBJECT_CAST (rp),
rp->segment.format, rp->segment.position));
}
/* for deriving a stop position for the playback segment from the seek
* segment, we must take the duration when the stop is not set */
if ((stop = rp->segment.stop) == -1)
stop = rp->segment.duration;
GST_DEBUG_OBJECT (rp, "preparing newsegment from %" G_GINT64_FORMAT
" to %" G_GINT64_FORMAT, rp->segment.start, stop);
/* now replace the old segment so that we send it in the stream thread the
* next time it is scheduled. */
if (rp->start_segment)
gst_event_unref (rp->start_segment);
rp->start_segment = gst_event_new_segment (&rp->segment);
}
rp->discont = TRUE;
GST_LOG_OBJECT (rp, "start streaming");
gst_pad_start_task (rp->sinkpad, (GstTaskFunction) gst_raw_parse_loop, rp,
NULL);
GST_PAD_STREAM_UNLOCK (rp->sinkpad);
return ret;
/* ERRORS */
convert_failed:
{
GST_DEBUG_OBJECT (rp, "Seek failed: couldn't convert to byte positions");
return FALSE;
}
}
static gboolean
gst_real_audio_demux_handle_seek (GstRealAudioDemux * demux, GstEvent * event)
{
GstFormat format;
GstSeekFlags flags;
GstSeekType cur_type, stop_type;
gboolean flush, update;
gdouble rate;
guint64 seek_pos;
gint64 cur, stop;
if (!demux->seekable)
goto not_seekable;
if (demux->byterate_num == 0 || demux->byterate_denom == 0)
goto no_bitrate;
gst_event_parse_seek (event, &rate, &format, &flags,
&cur_type, &cur, &stop_type, &stop);
if (format != GST_FORMAT_TIME)
goto only_time_format_supported;
if (rate <= 0.0)
goto cannot_do_backwards_playback;
flush = ((flags & GST_SEEK_FLAG_FLUSH) != 0);
GST_DEBUG_OBJECT (demux, "flush=%d, rate=%g", flush, rate);
/* unlock streaming thread and make streaming stop */
if (flush) {
gst_pad_push_event (demux->sinkpad, gst_event_new_flush_start ());
gst_pad_push_event (demux->srcpad, gst_event_new_flush_start ());
} else {
gst_pad_pause_task (demux->sinkpad);
}
GST_PAD_STREAM_LOCK (demux->sinkpad);
gst_segment_do_seek (&demux->segment, rate, format, flags,
cur_type, cur, stop_type, stop, &update);
GST_DEBUG_OBJECT (demux, "segment: %" GST_SEGMENT_FORMAT, &demux->segment);
seek_pos = gst_util_uint64_scale (demux->segment.start,
demux->byterate_num, demux->byterate_denom * GST_SECOND);
if (demux->packet_size > 0) {
seek_pos -= seek_pos % demux->packet_size;
}
seek_pos += demux->data_offset;
GST_DEBUG_OBJECT (demux, "seek_pos = %" G_GUINT64_FORMAT, seek_pos);
/* stop flushing */
gst_pad_push_event (demux->sinkpad, gst_event_new_flush_stop (TRUE));
gst_pad_push_event (demux->srcpad, gst_event_new_flush_stop (TRUE));
demux->offset = seek_pos;
demux->need_newsegment = TRUE;
/* notify start of new segment */
if (demux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
gst_element_post_message (GST_ELEMENT (demux),
gst_message_new_segment_start (GST_OBJECT (demux),
GST_FORMAT_TIME, demux->segment.position));
}
demux->segment_running = TRUE;
/* restart our task since it might have been stopped when we did the flush */
gst_pad_start_task (demux->sinkpad,
(GstTaskFunction) gst_real_audio_demux_loop, demux, NULL);
/* streaming can continue now */
GST_PAD_STREAM_UNLOCK (demux->sinkpad);
return TRUE;
/* ERRORS */
not_seekable:
{
GST_DEBUG_OBJECT (demux, "seek failed: cannot seek in streaming mode");
return FALSE;
}
no_bitrate:
{
GST_DEBUG_OBJECT (demux, "seek failed: bitrate unknown");
return FALSE;
}
only_time_format_supported:
{
GST_DEBUG_OBJECT (demux, "can only seek in TIME format");
return FALSE;
}
cannot_do_backwards_playback:
{
GST_DEBUG_OBJECT (demux, "can only seek with positive rate, not %lf", rate);
return FALSE;
}
}
static gboolean
gst_image_freeze_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstImageFreeze *self = GST_IMAGE_FREEZE (parent);
gboolean ret;
GST_LOG_OBJECT (pad, "Got %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NAVIGATION:
case GST_EVENT_QOS:
case GST_EVENT_LATENCY:
case GST_EVENT_STEP:
GST_DEBUG_OBJECT (pad, "Dropping event");
gst_event_unref (event);
ret = TRUE;
break;
case GST_EVENT_SEEK: {
gdouble rate;
GstFormat format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
gint64 last_stop;
gboolean start_task;
gboolean flush;
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
gst_event_unref (event);
flush = ! !(flags & GST_SEEK_FLAG_FLUSH);
if (format != GST_FORMAT_TIME && format != GST_FORMAT_DEFAULT) {
GST_ERROR_OBJECT (pad, "Seek in invalid format: %s",
gst_format_get_name (format));
ret = FALSE;
break;
}
if (format == GST_FORMAT_DEFAULT) {
format = GST_FORMAT_TIME;
if (!gst_image_freeze_convert (self, GST_FORMAT_DEFAULT, start, &format,
&start)
|| !gst_image_freeze_convert (self, GST_FORMAT_DEFAULT, stop,
&format, &stop)
|| start == -1 || stop == -1) {
GST_ERROR_OBJECT (pad,
"Failed to convert seek from DEFAULT format into TIME format");
ret = FALSE;
break;
}
}
if (flush) {
GstEvent *e;
g_atomic_int_set (&self->seeking, 1);
e = gst_event_new_flush_start ();
gst_pad_push_event (self->srcpad, e);
} else {
gst_pad_pause_task (self->srcpad);
}
GST_PAD_STREAM_LOCK (self->srcpad);
g_mutex_lock (&self->lock);
gst_segment_do_seek (&self->segment, rate, format, flags, start_type,
start, stop_type, stop, NULL);
self->need_segment = TRUE;
last_stop = self->segment.position;
start_task = self->buffer != NULL;
g_mutex_unlock (&self->lock);
if (flush) {
GstEvent *e;
e = gst_event_new_flush_stop (TRUE);
gst_pad_push_event (self->srcpad, e);
g_atomic_int_set (&self->seeking, 0);
}
if (flags & GST_SEEK_FLAG_SEGMENT) {
GstMessage *m;
m = gst_message_new_segment_start (GST_OBJECT (self),
format, last_stop);
gst_element_post_message (GST_ELEMENT (self), m);
}
GST_PAD_STREAM_UNLOCK (self->srcpad);
GST_DEBUG_OBJECT (pad, "Seek successful");
if (start_task) {
g_mutex_lock (&self->lock);
if (self->buffer != NULL)
gst_pad_start_task (self->srcpad,
(GstTaskFunction) gst_image_freeze_src_loop, self->srcpad, NULL);
g_mutex_unlock (&self->lock);
}
ret = TRUE;
break;
}
case GST_EVENT_FLUSH_START:
gst_image_freeze_reset (self);
/* fall through */
default:
ret = gst_pad_push_event (self->sinkpad, event);
break;
}
return ret;
}
static gboolean
gst_midi_parse_perform_seek (GstMidiParse * midiparse, GstEvent * event)
{
gboolean res = TRUE, tres;
gdouble rate;
GstFormat seek_format;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
gboolean flush;
gboolean update;
GstSegment seeksegment;
guint32 seqnum;
GstEvent *tevent;
GST_DEBUG_OBJECT (midiparse, "doing seek: %" GST_PTR_FORMAT, event);
if (event) {
gst_event_parse_seek (event, &rate, &seek_format, &flags,
&start_type, &start, &stop_type, &stop);
if (seek_format != GST_FORMAT_TIME)
goto invalid_format;
flush = flags & GST_SEEK_FLAG_FLUSH;
seqnum = gst_event_get_seqnum (event);
} else {
flush = FALSE;
/* get next seqnum */
seqnum = gst_util_seqnum_next ();
}
/* send flush start */
if (flush) {
tevent = gst_event_new_flush_start ();
gst_event_set_seqnum (tevent, seqnum);
gst_pad_push_event (midiparse->srcpad, tevent);
} else
gst_pad_pause_task (midiparse->srcpad);
/* grab streaming lock, this should eventually be possible, either
* because the task is paused, our streaming thread stopped
* or because our peer is flushing. */
GST_PAD_STREAM_LOCK (midiparse->sinkpad);
if (G_UNLIKELY (midiparse->seqnum == seqnum)) {
/* we have seen this event before, issue a warning for now */
GST_WARNING_OBJECT (midiparse, "duplicate event found %" G_GUINT32_FORMAT,
seqnum);
} else {
midiparse->seqnum = seqnum;
GST_DEBUG_OBJECT (midiparse, "seek with seqnum %" G_GUINT32_FORMAT, seqnum);
}
/* Copy the current segment info into the temp segment that we can actually
* attempt the seek with. We only update the real segment if the seek succeeds. */
memcpy (&seeksegment, &midiparse->segment, sizeof (GstSegment));
/* now configure the final seek segment */
if (event) {
gst_segment_do_seek (&seeksegment, rate, seek_format, flags,
start_type, start, stop_type, stop, &update);
}
/* Else, no seek event passed, so we're just (re)starting the
current segment. */
GST_DEBUG_OBJECT (midiparse, "segment configured from %" G_GINT64_FORMAT
" to %" G_GINT64_FORMAT ", position %" G_GINT64_FORMAT,
seeksegment.start, seeksegment.stop, seeksegment.position);
/* do the seek, segment.position contains the new position. */
res = gst_midi_parse_do_seek (midiparse, &seeksegment);
/* and prepare to continue streaming */
if (flush) {
tevent = gst_event_new_flush_stop (TRUE);
gst_event_set_seqnum (tevent, seqnum);
/* send flush stop, peer will accept data and events again. We
* are not yet providing data as we still have the STREAM_LOCK. */
gst_pad_push_event (midiparse->srcpad, tevent);
}
/* if the seek was successful, we update our real segment and push
* out the new segment. */
if (res) {
GST_OBJECT_LOCK (midiparse);
memcpy (&midiparse->segment, &seeksegment, sizeof (GstSegment));
GST_OBJECT_UNLOCK (midiparse);
if (seeksegment.flags & GST_SEGMENT_FLAG_SEGMENT) {
GstMessage *message;
message = gst_message_new_segment_start (GST_OBJECT (midiparse),
seeksegment.format, seeksegment.position);
gst_message_set_seqnum (message, seqnum);
gst_element_post_message (GST_ELEMENT (midiparse), message);
}
/* for deriving a stop position for the playback segment from the seek
* segment, we must take the duration when the stop is not set */
if ((stop = seeksegment.stop) == -1)
stop = seeksegment.duration;
midiparse->segment_pending = TRUE;
midiparse->discont = TRUE;
}
/* and restart the task in case it got paused explicitly or by
* the FLUSH_START event we pushed out. */
tres =
gst_pad_start_task (midiparse->sinkpad,
(GstTaskFunction) gst_midi_parse_loop, midiparse->sinkpad, NULL);
if (res && !tres)
res = FALSE;
/* and release the lock again so we can continue streaming */
GST_PAD_STREAM_UNLOCK (midiparse->sinkpad);
return res;
/* ERROR */
invalid_format:
{
GST_DEBUG_OBJECT (midiparse, "Unsupported seek format %s",
gst_format_get_name (seek_format));
return FALSE;
}
}
static gboolean
gst_adder_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstAdder *adder;
gboolean result;
adder = GST_ADDER (parent);
GST_DEBUG_OBJECT (pad, "Got %s event on src pad",
GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
{
GstSeekFlags flags;
gdouble rate;
GstSeekType start_type, stop_type;
gint64 start, stop;
GstFormat seek_format, dest_format;
gboolean flush;
/* parse the seek parameters */
gst_event_parse_seek (event, &rate, &seek_format, &flags, &start_type,
&start, &stop_type, &stop);
if ((start_type != GST_SEEK_TYPE_NONE)
&& (start_type != GST_SEEK_TYPE_SET)) {
result = FALSE;
GST_DEBUG_OBJECT (adder,
"seeking failed, unhandled seek type for start: %d", start_type);
goto done;
}
if ((stop_type != GST_SEEK_TYPE_NONE) && (stop_type != GST_SEEK_TYPE_SET)) {
result = FALSE;
GST_DEBUG_OBJECT (adder,
"seeking failed, unhandled seek type for end: %d", stop_type);
goto done;
}
dest_format = adder->segment.format;
if (seek_format != dest_format) {
result = FALSE;
GST_DEBUG_OBJECT (adder,
"seeking failed, unhandled seek format: %d", seek_format);
goto done;
}
flush = (flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH;
/* check if we are flushing */
if (flush) {
/* flushing seek, start flush downstream, the flush will be done
* when all pads received a FLUSH_STOP.
* Make sure we accept nothing anymore and return WRONG_STATE.
* We send a flush-start before, to ensure no streaming is done
* as we need to take the stream lock.
*/
gst_pad_push_event (adder->srcpad, gst_event_new_flush_start ());
gst_collect_pads_set_flushing (adder->collect, TRUE);
/* We can't send FLUSH_STOP here since upstream could start pushing data
* after we unlock adder->collect.
* We set flush_stop_pending to TRUE instead and send FLUSH_STOP after
* forwarding the seek upstream or from gst_adder_collected,
* whichever happens first.
*/
GST_COLLECT_PADS_STREAM_LOCK (adder->collect);
adder->flush_stop_pending = TRUE;
GST_COLLECT_PADS_STREAM_UNLOCK (adder->collect);
GST_DEBUG_OBJECT (adder, "mark pending flush stop event");
}
GST_DEBUG_OBJECT (adder, "handling seek event: %" GST_PTR_FORMAT, event);
/* now wait for the collected to be finished and mark a new
* segment. After we have the lock, no collect function is running and no
* new collect function will be called for as long as we're flushing. */
GST_COLLECT_PADS_STREAM_LOCK (adder->collect);
/* clip position and update our segment */
if (adder->segment.stop != -1) {
adder->segment.position = adder->segment.stop;
}
gst_segment_do_seek (&adder->segment, rate, seek_format, flags,
start_type, start, stop_type, stop, NULL);
if (flush) {
/* Yes, we need to call _set_flushing again *WHEN* the streaming threads
* have stopped so that the cookie gets properly updated. */
gst_collect_pads_set_flushing (adder->collect, TRUE);
}
GST_COLLECT_PADS_STREAM_UNLOCK (adder->collect);
GST_DEBUG_OBJECT (adder, "forwarding seek event: %" GST_PTR_FORMAT,
event);
GST_DEBUG_OBJECT (adder, "updated segment: %" GST_SEGMENT_FORMAT,
&adder->segment);
/* we're forwarding seek to all upstream peers and wait for one to reply
* with a newsegment-event before we send a newsegment-event downstream */
g_atomic_int_set (&adder->new_segment_pending, TRUE);
result = forward_event (adder, event, flush);
if (!result) {
/* seek failed. maybe source is a live source. */
GST_DEBUG_OBJECT (adder, "seeking failed");
}
if (g_atomic_int_compare_and_exchange (&adder->flush_stop_pending,
TRUE, FALSE)) {
GST_DEBUG_OBJECT (adder, "pending flush stop");
if (!gst_pad_push_event (adder->srcpad,
gst_event_new_flush_stop (TRUE))) {
GST_WARNING_OBJECT (adder, "Sending flush stop event failed");
}
}
break;
}
case GST_EVENT_QOS:
/* QoS might be tricky */
result = FALSE;
gst_event_unref (event);
break;
case GST_EVENT_NAVIGATION:
/* navigation is rather pointless. */
result = FALSE;
gst_event_unref (event);
break;
default:
/* just forward the rest for now */
GST_DEBUG_OBJECT (adder, "forward unhandled event: %s",
GST_EVENT_TYPE_NAME (event));
result = forward_event (adder, event, FALSE);
break;
}
done:
return result;
}
