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handle changing framerate while PLAYING

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Original commit message from CVS:
handle changing framerate while PLAYING
This commit is contained in:
Thomas Vander Stichele 2004-08-05 17:51:07 +00:00
parent 43b6b750c6
commit fa9cca2cc4
2 changed files with 22 additions and 8 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2004-08-05 Thomas Vander Stichele <thomas at apestaart dot org>
* gst/videotestsrc/gstvideotestsrc.c: (gst_videotestsrc_src_link),
(gst_videotestsrc_change_state), (gst_videotestsrc_src_query),
(gst_videotestsrc_handle_src_event), (gst_videotestsrc_get):
decouple running_time and n_frames so it can handle changing
framerate while running
2004-08-05 Thomas Vander Stichele <thomas at apestaart dot org>
* po/nl.po:

22
gst/videotestsrc/gstvideotestsrc.c
View file

@ -251,8 +251,8 @@ gst_videotestsrc_src_link (GstPad * pad, const GstCaps * caps)
videotestsrc->bpp = videotestsrc->fourcc->bitspp;
GST_DEBUG_OBJECT (videotestsrc, "size %dx%d", videotestsrc->width,
videotestsrc->height);
GST_DEBUG_OBJECT (videotestsrc, "size %dx%d, %f fps", videotestsrc->width,
videotestsrc->height, videotestsrc->rate);
return GST_PAD_LINK_OK;
}
@ -284,6 +284,7 @@ gst_videotestsrc_change_state (GstElement * element)
break;
case GST_STATE_PAUSED_TO_READY:
videotestsrc->timestamp_offset = 0;
videotestsrc->running_time = 0;
videotestsrc->n_frames = 0;
break;
case GST_STATE_READY_TO_NULL:
@ -411,8 +412,7 @@ gst_videotestsrc_src_query (GstPad * pad,
case GST_QUERY_POSITION:
switch (*format) {
case GST_FORMAT_TIME:
*value =
videotestsrc->n_frames * GST_SECOND / (double) videotestsrc->rate;
*value = videotestsrc->running_time;
res = TRUE;
break;
case GST_FORMAT_DEFAULT: /* frames */
@ -447,6 +447,7 @@ gst_videotestsrc_handle_src_event (GstPad * pad, GstEvent * event)
gboolean res = TRUE;
GstVideotestsrc *videotestsrc;
gint64 new_n_frames;
GstClockTime new_running_time;
g_return_val_if_fail (pad != NULL, FALSE);
g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
@ -457,8 +458,11 @@ gst_videotestsrc_handle_src_event (GstPad * pad, GstEvent * event)
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
{
/* since we don't do bookkeeping, we just assign a useful meaning
* to the time/frame relation after seeking based on current fps */
switch (GST_EVENT_SEEK_FORMAT (event)) {
case GST_FORMAT_TIME:
new_running_time = GST_EVENT_SEEK_OFFSET (event);
new_n_frames =
GST_EVENT_SEEK_OFFSET (event) * (double) videotestsrc->rate /
GST_SECOND;
@ -467,6 +471,8 @@ gst_videotestsrc_handle_src_event (GstPad * pad, GstEvent * event)
break;
case GST_FORMAT_DEFAULT:
new_n_frames = GST_EVENT_SEEK_OFFSET (event);
new_running_time = GST_EVENT_SEEK_OFFSET (event) /
(double) videotestsrc->rate * GST_SECOND;
videotestsrc->segment_start_frame = -1;
videotestsrc->segment_end_frame = -1;
break;
@ -576,16 +582,16 @@ gst_videotestsrc_get (GstPad * pad)
videotestsrc->width, videotestsrc->height);
GST_BUFFER_TIMESTAMP (buf) = videotestsrc->timestamp_offset +
(videotestsrc->n_frames * GST_SECOND) / (double) videotestsrc->rate;
videotestsrc->n_frames++;
videotestsrc->running_time;
GST_BUFFER_DURATION (buf) = GST_SECOND / (double) videotestsrc->rate;
if (videotestsrc->sync) {
/* FIXME this is not correct if we do QoS */
if (videotestsrc->clock) {
gst_element_wait (GST_ELEMENT (videotestsrc), GST_BUFFER_TIMESTAMP (buf));
}
}
GST_BUFFER_DURATION (buf) = GST_SECOND / (double) videotestsrc->rate;
videotestsrc->n_frames++;
videotestsrc->running_time += GST_BUFFER_DURATION (buf);
return GST_DATA (buf);
}