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adder: add support for negative playback rates

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Decrement sample counter when playing backwards. Set proper segment when playing
backwards (0..cur instead or cur..-1). Add more logging and fix a format string.
This commit is contained in:
Stefan Kost 2010-04-11 22:58:15 +03:00
parent 66cc2faba7
commit 57cc1150a9
1 changed files with 18 additions and 4 deletions
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22
gst/adder/gstadder.c
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@ -1197,8 +1197,18 @@ gst_adder_collected (GstCollectPads * pads, gpointer user_data)
* the later streams would be delayed until the stream times
* match.
*/
event = gst_event_new_new_segment_full (FALSE, adder->segment_rate,
1.0, GST_FORMAT_TIME, adder->timestamp, -1, adder->segment_position);
if (adder->segment_rate > 0.0) {
event = gst_event_new_new_segment_full (FALSE, adder->segment_rate,
1.0, GST_FORMAT_TIME, adder->timestamp, GST_CLOCK_TIME_NONE,
adder->segment_position);
} else {
event = gst_event_new_new_segment_full (FALSE, adder->segment_rate,
1.0, GST_FORMAT_TIME, G_GINT64_CONSTANT (0), adder->timestamp,
adder->segment_position);
}
GST_INFO_OBJECT (adder->srcpad, "new segment event for "
"rate:%lf start:%" G_GINT64_FORMAT " cur:%" G_GUINT64_FORMAT,
adder->segment_rate, adder->timestamp, adder->segment_position);
if (event) {
if (!gst_pad_push_event (adder->srcpad, event)) {
@ -1209,7 +1219,7 @@ gst_adder_collected (GstCollectPads * pads, gpointer user_data)
adder->segment_position = 0;
} else {
GST_WARNING_OBJECT (adder->srcpad, "Creating new segment event for "
"start:%" G_GINT64_FORMAT " pos:%" G_GINT64_FORMAT " failed",
"start:%" G_GINT64_FORMAT " pos:%" G_GUINT64_FORMAT " failed",
adder->timestamp, adder->segment_position);
}
}
@ -1233,7 +1243,11 @@ gst_adder_collected (GstCollectPads * pads, gpointer user_data)
/* for the next timestamp, use the sample counter, which will
* never accumulate rounding errors */
adder->offset += outsize / adder->bps;
if (adder->segment_rate > 0.0) {
adder->offset += outsize / adder->bps;
} else {
adder->offset -= outsize / adder->bps;
}
adder->timestamp = gst_util_uint64_scale_int (adder->offset,
GST_SECOND, adder->rate);