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niimaqsrc: handle latency query and drop unneeded get_times method

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This commit is contained in:
Joshua M. Doe 2012-07-03 05:16:44 -04:00
parent 5d5d1085b7
commit 3d10570a8e
1 changed files with 32 additions and 26 deletions
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58
sys/niimaq/gstniimaq.c
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@ -87,10 +87,9 @@ static void gst_niimaqsrc_get_property (GObject * object, guint prop_id,
/* GstBaseSrc virtual methods */
static GstCaps *gst_niimaqsrc_get_caps (GstBaseSrc * bsrc);
static gboolean gst_niimaqsrc_set_caps (GstBaseSrc * bsrc, GstCaps * caps);
static void gst_niimaqsrc_get_times (GstBaseSrc * basesrc,
GstBuffer * buffer, GstClockTime * start, GstClockTime * end);
static gboolean gst_niimaqsrc_start (GstBaseSrc * src);
static gboolean gst_niimaqsrc_stop (GstBaseSrc * src);
static gboolean gst_niimaqsrc_query (GstBaseSrc * src, GstQuery * query);
/* GstPushSrc virtual methods */
static GstFlowReturn gst_niimaqsrc_create (GstPushSrc * psrc,
@ -475,9 +474,9 @@ gst_niimaqsrc_class_init (GstNiImaqSrcClass * klass)
/* install GstBaseSrc vmethod implementations */
gstbasesrc_class->get_caps = gst_niimaqsrc_get_caps;
gstbasesrc_class->set_caps = gst_niimaqsrc_set_caps;
gstbasesrc_class->get_times = gst_niimaqsrc_get_times;
gstbasesrc_class->start = gst_niimaqsrc_start;
gstbasesrc_class->stop = gst_niimaqsrc_stop;
gstbasesrc_class->query = gst_niimaqsrc_query;
/* install GstPushSrc vmethod implementations */
gstpushsrc_class->create = gst_niimaqsrc_create;
@ -637,29 +636,6 @@ gst_niimaqsrc_set_caps (GstBaseSrc * bsrc, GstCaps * caps)
return res;
}
static void
gst_niimaqsrc_get_times (GstBaseSrc * basesrc, GstBuffer * buffer,
GstClockTime * start, GstClockTime * end)
{
/* for live sources, sync on the timestamp of the buffer */
if (gst_base_src_is_live (basesrc)) {
GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buffer);
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
/* get duration to calculate end time */
GstClockTime duration = GST_BUFFER_DURATION (buffer);
if (GST_CLOCK_TIME_IS_VALID (duration)) {
*end = timestamp + duration;
}
*start = timestamp;
}
} else {
*start = -1;
*end = -1;
}
}
static void
gst_niimaqsrc_reset (GstNiImaqSrc * niimaqsrc)
{
@ -1063,6 +1039,36 @@ gst_niimaqsrc_stop (GstBaseSrc * src)
return TRUE;
}
static gboolean
gst_niimaqsrc_query (GstBaseSrc * src, GstQuery * query)
{
GstNiImaqSrc *niimaqsrc = GST_NIIMAQSRC (src);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_LATENCY:{
GstClockTime min_latency, max_latency;
if (!niimaqsrc->session_started) {
GST_WARNING_OBJECT (niimaqsrc,
"Can't give latency since device isn't open!");
return FALSE;
}
/* TODO: this is a ballpark figure, estimate from FVAL times */
min_latency = 33 * GST_MSECOND;
max_latency = 33 * GST_MSECOND * niimaqsrc->bufsize;
GST_DEBUG_OBJECT (niimaqsrc,
"report latency min %" GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
GST_TIME_ARGS (min_latency), GST_TIME_ARGS (max_latency));
gst_query_set_latency (query, TRUE, min_latency, max_latency);
return TRUE;
}
}
}
/**
* gst_niimaqsrc_close_interface:
* niimaqsrc: #GstNiImaqSrc instance