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gst/gstbin.c: Prepare for release where we warn against possible app breakage in the case of live pipelines along wit...

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Original commit message from CVS:
* gst/gstbin.c: (gst_bin_get_type), (gst_bin_element_set_state):
Prepare for release where we warn against possible app breakage in the
case of live pipelines along with an env var to enable/disable live
preroll mode (GST_COMPAT=[no-]live-preroll).
This commit is contained in:
Wim Taymans 2007-03-21 11:52:04 +00:00
parent dab34ba05e
commit 9f3b0b8f3a
2 changed files with 41 additions and 1 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2007-03-21 Wim Taymans <wim@fluendo.com>
* gst/gstbin.c: (gst_bin_get_type), (gst_bin_element_set_state):
Prepare for release where we warn against possible app breakage in the
case of live pipelines along with an env var to enable/disable live
preroll mode (GST_COMPAT=[no-]live-preroll).
2007-03-20 Zaheer Abbas Merali <zaheerabbas at merali dot org>
* plugins/elements/gstidentity.c (gst_identity_check_imperfect_offset):

35
gst/gstbin.c
View file

@ -176,6 +176,16 @@
* their duration when it changes so we return inaccurate values. */
#undef DURATION_CACHING
/* latency is by default disabled for non CVS for now.
* live-preroll and no-live-preroll in the environment var GST_COMPAT
* to enables or disable it respectively.
*/
#if GST_VERSION_NANO == 1
static gboolean enable_latency = TRUE;
#else
static gboolean enable_latency = FALSE;
#endif
GST_DEBUG_CATEGORY_STATIC (bin_debug);
#define GST_CAT_DEFAULT bin_debug
@ -253,6 +263,7 @@ GType
gst_bin_get_type (void)
{
static GType gst_bin_type = 0;
const gchar *compat;
if (G_UNLIKELY (gst_bin_type == 0)) {
static const GTypeInfo bin_info = {
@ -281,6 +292,15 @@ gst_bin_get_type (void)
GST_DEBUG_CATEGORY_INIT (bin_debug, "bin", GST_DEBUG_BOLD,
"debugging info for the 'bin' container element");
/* compatibility stuff */
compat = g_getenv ("GST_COMPAT");
if (compat != NULL) {
if (strstr (compat, "no-live-preroll"))
enable_latency = FALSE;
else if (strstr (compat, "live-preroll"))
enable_latency = TRUE;
}
}
return gst_bin_type;
}
@ -1824,12 +1844,25 @@ gst_bin_element_set_state (GstBin * bin, GstElement * element,
GstMessage *message = GST_MESSAGE_CAST (found->data);
GstObject *src = GST_MESSAGE_SRC (message);
GST_DEBUG_OBJECT (element, "element message %p, %s async busy",
message, GST_ELEMENT_NAME (src));
/* only wait for upward state changes */
if (next > current)
if (next > current) {
/* We found an async element check if we can force its state to change or
* if we have to wait for it to preroll. */
if (G_UNLIKELY (!enable_latency)) {
g_warning ("Future versions of GStreamer will wait for element \"%s\"\n"
"\tto preroll in order to perform correct latency calculations.\n"
"\tPlease verify that the application continues to work correctly by\n"
"\tsetting the environment variable GST_COMPAT to a value containing\n"
"\tthe string 'live-preroll'.", GST_ELEMENT_NAME (element));
goto no_latency;
}
goto was_busy;
}
}
no_latency:
GST_OBJECT_UNLOCK (bin);
GST_DEBUG_OBJECT (bin,