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Add ASYNC_START and ASYNC_DONE messages to prepare for latency support.

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Original commit message from CVS:
* docs/gst/gstreamer-sections.txt:
* gst/gstmessage.c: (gst_message_new_async_start),
(gst_message_new_async_done), (gst_message_parse_info),
(gst_message_parse_async_start):
* gst/gstmessage.h:
Add ASYNC_START and ASYNC_DONE messages to prepare for latency
support.
This commit is contained in:
Wim Taymans 2007-03-19 09:55:02 +00:00
parent 1b6708fae4
commit d66263996d
4 changed files with 98 additions and 0 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
2007-03-19 Wim Taymans <wim@fluendo.com>
* docs/gst/gstreamer-sections.txt:
* gst/gstmessage.c: (gst_message_new_async_start),
(gst_message_new_async_done), (gst_message_parse_info),
(gst_message_parse_async_start):
* gst/gstmessage.h:
Add ASYNC_START and ASYNC_DONE messages to prepare for latency
support.
2007-03-15 Tim-Philipp Müller <tim at centricular dot net>
* tools/gst-inspect.c:

4
docs/gst/gstreamer-sections.txt
View file

@ -1013,6 +1013,8 @@ gst_message_new_buffering
gst_message_new_warning
gst_message_new_duration
gst_message_new_state_dirty
gst_message_new_async_start
gst_message_new_async_done
gst_message_new_latency
gst_message_parse_clock_lost
gst_message_parse_clock_provide
@ -1026,8 +1028,10 @@ gst_message_parse_tag
gst_message_parse_buffering
gst_message_parse_warning
gst_message_parse_duration
gst_message_parse_async_start
gst_message_ref
gst_message_unref
<SUBSECTION Standard>
GstMessageClass
GST_MESSAGE

75
gst/gstmessage.c
View file

@ -109,6 +109,8 @@ static GstMessageQuarks message_quarks[] = {
{GST_MESSAGE_SEGMENT_DONE, "segment-done", 0},
{GST_MESSAGE_DURATION, "duration", 0},
{GST_MESSAGE_LATENCY, "latency", 0},
{GST_MESSAGE_ASYNC_START, "async-start", 0},
{GST_MESSAGE_ASYNC_DONE, "async-done", 0},
{0, NULL, 0}
};
@ -724,6 +726,53 @@ gst_message_new_duration (GstObject * src, GstFormat format, gint64 duration)
return message;
}
/**
* gst_message_new_async_start:
* @src: The object originating the message.
* @new_base_time: if a new base_time should be set on the element
*
* This message is posted by elements when they start an ASYNC state change.
* @new_base_time is set to TRUE when the element lost its state when it was
* PLAYING.
*
* Returns: The new async_start message.
*
* MT safe.
*
* Since: 0.10.13
*/
GstMessage *
gst_message_new_async_start (GstObject * src, gboolean new_base_time)
{
GstMessage *message;
message = gst_message_new_custom (GST_MESSAGE_ASYNC_START, src,
gst_structure_new ("GstMessageAsyncStart",
"new-base-time", G_TYPE_BOOLEAN, new_base_time, NULL));
return message;
}
/**
* gst_message_new_async_done:
* @src: The object originating the message.
*
* Returns: The new async_done message.
*
* MT safe.
*
* Since: 0.10.13
*/
GstMessage *
gst_message_new_async_done (GstObject * src)
{
GstMessage *message;
message = gst_message_new_custom (GST_MESSAGE_ASYNC_DONE, src, NULL);
return message;
}
/**
* gst_message_new_latency:
* @src: The object originating the message.
@ -1108,3 +1157,29 @@ gst_message_parse_duration (GstMessage * message, GstFormat * format,
*duration =
g_value_get_int64 (gst_structure_get_value (structure, "duration"));
}
/**
* gst_message_parse_async_start:
* @message: A valid #GstMessage of type GST_MESSAGE_ASYNC_DONE.
* @new_base_time: Result location for the new_base_time or NULL
*
* Extract the new_base_time from the async_start message.
*
* MT safe.
*
* Since: 0.10.13
*/
void
gst_message_parse_async_start (GstMessage * message, gboolean * new_base_time)
{
const GstStructure *structure;
g_return_if_fail (GST_IS_MESSAGE (message));
g_return_if_fail (GST_MESSAGE_TYPE (message) == GST_MESSAGE_ASYNC_START);
structure = gst_message_get_structure (message);
if (new_base_time)
*new_base_time =
g_value_get_boolean (gst_structure_get_value (structure,
"new-base-time"));
}

9
gst/gstmessage.h
View file

@ -55,6 +55,10 @@ typedef struct _GstMessageClass GstMessageClass;
* @GST_MESSAGE_SEGMENT_START: pipeline started playback of a segment.
* @GST_MESSAGE_SEGMENT_DONE: pipeline completed playback of a segment.
* @GST_MESSAGE_DURATION: The duration of a pipeline changed.
* @GST_MESSAGE_ASYNC_START: Posted by elements when they start an ASYNC state
* change. Since: 0.10.13
* @GST_MESSAGE_ASYNC_DONE: Posted by elements when they complete an ASYNC state
* change. Since: 0.10.13
* @GST_MESSAGE_LATENCY: Posted by elements when their latency changes. The
* pipeline will calculate and distribute a new latency. Since: 0.10.12
* @GST_MESSAGE_ANY: mask for all of the above messages.
@ -87,6 +91,8 @@ typedef enum
GST_MESSAGE_SEGMENT_DONE = (1 << 17),
GST_MESSAGE_DURATION = (1 << 18),
GST_MESSAGE_LATENCY = (1 << 19),
GST_MESSAGE_ASYNC_START = (1 << 20),
GST_MESSAGE_ASYNC_DONE = (1 << 21),
GST_MESSAGE_ANY = ~0
} GstMessageType;
@ -263,6 +269,8 @@ GstMessage * gst_message_new_element (GstObject * src, GstStructure * structure
GstMessage * gst_message_new_segment_start (GstObject * src, GstFormat format, gint64 position);
GstMessage * gst_message_new_segment_done (GstObject * src, GstFormat format, gint64 position);
GstMessage * gst_message_new_duration (GstObject * src, GstFormat format, gint64 duration);
GstMessage * gst_message_new_async_start (GstObject * src, gboolean new_base_time);
GstMessage * gst_message_new_async_done (GstObject * src);
GstMessage * gst_message_new_latency (GstObject * src);
GstMessage * gst_message_new_custom (GstMessageType type,
GstObject * src,
@ -281,6 +289,7 @@ void gst_message_parse_new_clock (GstMessage *message, GstClock **clock);
void gst_message_parse_segment_start (GstMessage *message, GstFormat *format, gint64 *position);
void gst_message_parse_segment_done (GstMessage *message, GstFormat *format, gint64 *position);
void gst_message_parse_duration (GstMessage *message, GstFormat *format, gint64 *duration);
void gst_message_parse_async_start (GstMessage *message, gboolean *new_base_time);
const GstStructure * gst_message_get_structure (GstMessage *message);