static gboolean
gst_raw_parse_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstRawParse *rp = GST_RAW_PARSE (parent);
gboolean ret;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
case GST_EVENT_FLUSH_STOP:
/* Only happens in push mode */
gst_raw_parse_reset (rp);
ret = gst_pad_push_event (rp->srcpad, event);
break;
case GST_EVENT_SEGMENT:
{
GstSegment segment;
/* Only happens in push mode */
gst_event_copy_segment (event, &segment);
if (segment.format != GST_FORMAT_TIME) {
gst_event_unref (event);
ret =
gst_raw_parse_convert (rp, segment.format, segment.start,
GST_FORMAT_TIME, (gint64 *) & segment.start);
ret &= gst_raw_parse_convert (rp, segment.format, segment.time,
GST_FORMAT_TIME, (gint64 *) & segment.time);
ret &= gst_raw_parse_convert (rp, segment.format, segment.stop,
GST_FORMAT_TIME, (gint64 *) & segment.stop);
if (!ret) {
GST_ERROR_OBJECT (rp,
"Failed converting to GST_FORMAT_TIME format (%d)",
segment.format);
break;
}
segment.format = GST_FORMAT_TIME;
event = gst_event_new_segment (&segment);
}
gst_segment_copy_into (&segment, &rp->segment);
if (rp->start_segment)
gst_event_unref (rp->start_segment);
rp->start_segment = event;
ret = TRUE;
break;
}
default:
ret = gst_pad_event_default (pad, parent, event);
break;
}
return ret;
}
static gboolean
gst_raw_parse_handle_seek_push (GstRawParse * rp, GstEvent * event)
{
GstFormat format;
gdouble rate;
GstSeekFlags flags;
GstSeekType start_type, stop_type;
gint64 start, stop;
gboolean ret = FALSE;
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
/* can't seek backwards yet */
if (rate <= 0.0)
goto wrong_rate;
/* First try if upstream handles the seek */
ret = gst_pad_push_event (rp->sinkpad, event);
if (ret)
return ret;
/* Otherwise convert to bytes and push upstream */
if (format == GST_FORMAT_TIME || format == GST_FORMAT_DEFAULT) {
ret = gst_raw_parse_convert (rp, format, start, GST_FORMAT_BYTES, &start);
ret &= gst_raw_parse_convert (rp, format, stop, GST_FORMAT_BYTES, &stop);
if (ret) {
/* Seek on a frame boundary */
start -= start % rp->framesize;
if (stop != -1)
stop += rp->framesize - stop % rp->framesize;
event =
gst_event_new_seek (rate, GST_FORMAT_BYTES, flags, start_type,
start, stop_type, stop);
ret = gst_pad_push_event (rp->sinkpad, event);
} else {
GST_DEBUG_OBJECT (rp, "Seek failed: couldn't convert to byte positions");
}
} else {
GST_DEBUG_OBJECT (rp,
"seeking is only supported in TIME or DEFAULT format");
}
return ret;
/* ERRORS */
wrong_rate:
{
GST_DEBUG_OBJECT (rp, "Seek failed: negative rates not supported yet");
return FALSE;
}
}
static gboolean
gst_raw_parse_sink_activatepull (GstPad * sinkpad, gboolean active)
{
GstRawParse *rp = GST_RAW_PARSE (gst_pad_get_parent (sinkpad));
gboolean result;
if (active) {
GstFormat format;
gint64 duration;
/* get the duration in bytes */
format = GST_FORMAT_BYTES;
result = gst_pad_query_peer_duration (sinkpad, &format, &duration);
if (result) {
GST_DEBUG_OBJECT (rp, "got duration %" GST_TIME_FORMAT,
GST_TIME_ARGS (duration));
rp->upstream_length = duration;
/* convert to time */
gst_raw_parse_convert (rp, format, duration, GST_FORMAT_TIME, &duration);
} else {
rp->upstream_length = -1;
duration = -1;
}
gst_segment_set_duration (&rp->segment, GST_FORMAT_TIME, duration);
result = gst_raw_parse_handle_seek_pull (rp, NULL);
} else {
result = gst_pad_stop_task (sinkpad);
}
gst_object_unref (rp);
return result;
}
static gboolean
gst_raw_parse_sink_activatemode (GstPad * sinkpad, GstObject * parent,
GstPadMode mode, gboolean active)
{
GstRawParse *rp = GST_RAW_PARSE (parent);
gboolean result;
switch (mode) {
case GST_PAD_MODE_PULL:
if (active) {
GstFormat format;
gint64 duration;
/* get the duration in bytes */
format = GST_FORMAT_BYTES;
result = gst_pad_peer_query_duration (sinkpad, format, &duration);
if (result) {
GST_DEBUG_OBJECT (rp, "got duration %" GST_TIME_FORMAT,
GST_TIME_ARGS (duration));
rp->upstream_length = duration;
/* convert to time */
gst_raw_parse_convert (rp, format, duration, GST_FORMAT_TIME,
&duration);
} else {
rp->upstream_length = -1;
duration = -1;
}
rp->segment.duration = duration;
rp->push_stream_start = TRUE;
result = gst_raw_parse_handle_seek_pull (rp, NULL);
rp->mode = mode;
} else {
result = gst_pad_stop_task (sinkpad);
}
return result;
case GST_PAD_MODE_PUSH:
rp->mode = mode;
return TRUE;
default:
return FALSE;
}
}
static gboolean
gst_raw_parse_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
GstRawParse *rp = GST_RAW_PARSE (parent);
gboolean ret = FALSE;
GST_DEBUG ("src_query %s", gst_query_type_get_name (GST_QUERY_TYPE (query)));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
{
GstFormat format;
gint64 time, value;
GST_LOG ("query position");
gst_query_parse_position (query, &format, NULL);
time = rp->segment.position;
ret = gst_raw_parse_convert (rp, GST_FORMAT_TIME, time, format, &value);
gst_query_set_position (query, format, value);
break;
}
case GST_QUERY_DURATION:{
gint64 duration;
GstFormat format;
GstQuery *bquery;
GST_LOG ("query duration");
ret = gst_pad_peer_query (rp->sinkpad, query);
if (ret)
goto done;
gst_query_parse_duration (query, &format, NULL);
/* We only handle TIME and DEFAULT format */
if (format != GST_FORMAT_TIME && format != GST_FORMAT_DEFAULT)
goto error;
bquery = gst_query_new_duration (GST_FORMAT_BYTES);
ret = gst_pad_peer_query (rp->sinkpad, bquery);
if (!ret) {
gst_query_unref (bquery);
goto error;
}
gst_query_parse_duration (bquery, NULL, &duration);
gst_query_unref (bquery);
ret =
gst_raw_parse_convert (rp, GST_FORMAT_BYTES, duration, format,
&duration);
if (ret)
gst_query_set_duration (query, format, duration);
break;
}
case GST_QUERY_CONVERT:
{
GstFormat src_fmt, dest_fmt;
gint64 src_val, dest_val;
GST_LOG ("query convert");
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
ret = gst_raw_parse_convert (rp, src_fmt, src_val, dest_fmt, &dest_val);
if (!ret)
goto error;
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
break;
}
case GST_QUERY_SEEKING:{
GstFormat fmt;
ret = TRUE;
gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
if (fmt != GST_FORMAT_TIME && fmt != GST_FORMAT_DEFAULT
&& fmt != GST_FORMAT_BYTES) {
gst_query_set_seeking (query, fmt, FALSE, -1, -1);
} else if (rp->mode == GST_PAD_MODE_PUSH) {
GstQuery *peerquery = gst_query_new_seeking (GST_FORMAT_BYTES);
gboolean seekable;
seekable = gst_pad_peer_query (rp->sinkpad, peerquery);
if (seekable)
gst_query_parse_seeking (peerquery, NULL, &seekable, NULL, NULL);
gst_query_unref (peerquery);
gst_query_set_seeking (query, fmt, seekable, seekable ? 0 : -1, -1);
} else {
gst_query_set_seeking (query, fmt, TRUE, 0, -1);
}
break;
}
default:
/* else forward upstream */
ret = gst_pad_query_default (rp->sinkpad, parent, query);
break;
}
done:
return ret;
/* ERRORS */
error:
{
GST_DEBUG_OBJECT (rp, "query failed");
goto done;
}
}
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_raw_parse_sink_event (GstPad * pad, GstEvent * event)
{
GstRawParse *rp = GST_RAW_PARSE (gst_pad_get_parent (pad));
gboolean ret;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
case GST_EVENT_FLUSH_STOP:
/* Only happens in push mode */
gst_raw_parse_reset (rp);
ret = gst_pad_push_event (rp->srcpad, event);
break;
case GST_EVENT_NEWSEGMENT:
{
GstClockTimeDiff start, stop, time;
gdouble rate, arate;
gboolean update;
GstFormat format;
/* Only happens in push mode */
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
&start, &stop, &time);
if (format == GST_FORMAT_TIME) {
gst_segment_set_newsegment_full (&rp->segment, update, rate, arate,
GST_FORMAT_TIME, start, stop, time);
ret = gst_pad_push_event (rp->srcpad, event);
} else {
gst_event_unref (event);
ret =
gst_raw_parse_convert (rp, format, start, GST_FORMAT_TIME, &start);
ret &= gst_raw_parse_convert (rp, format, time, GST_FORMAT_TIME, &time);
ret &= gst_raw_parse_convert (rp, format, stop, GST_FORMAT_TIME, &stop);
if (!ret) {
GST_ERROR_OBJECT (rp,
"Failed converting to GST_FORMAT_TIME format (%d)", format);
break;
}
gst_segment_set_newsegment_full (&rp->segment, update, rate, arate,
GST_FORMAT_TIME, start, stop, time);
/* create new segment with the fields converted to time */
event = gst_event_new_new_segment_full (update, rate, arate,
GST_FORMAT_TIME, start, stop, time);
ret = gst_pad_push_event (rp->srcpad, event);
}
break;
}
default:
ret = gst_pad_event_default (rp->sinkpad, event);
break;
}
gst_object_unref (rp);
return ret;
}
