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dvb: Move CAM handling to a separate GstTask

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* No longer blocks in READY=>PAUSED (faster startup)
* No longer requires a pad probe
This commit is contained in:
Edward Hervey 2013-03-31 12:11:48 +02:00
parent 95f819109f
commit 5e70c76b33
2 changed files with 56 additions and 27 deletions
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78
sys/dvb/dvbbasebin.c
View file

@ -99,8 +99,8 @@ static void dvb_base_bin_get_property (GObject * object, guint prop_id,
static void dvb_base_bin_dispose (GObject * object);
static void dvb_base_bin_finalize (GObject * object);
static GstPadProbeReturn dvb_base_bin_ts_pad_probe_cb (GstPad * pad,
GstPadProbeInfo * info, gpointer user_data);
static void dvb_base_bin_task (DvbBaseBin * basebin);
static GstStateChangeReturn dvb_base_bin_change_state (GstElement * element,
GstStateChange transition);
static void dvb_base_bin_handle_message (GstBin * bin, GstMessage * message);
@ -308,6 +308,7 @@ dvb_base_bin_reset (DvbBaseBin * dvbbasebin)
cam_device_free (dvbbasebin->hwcam);
dvbbasebin->hwcam = NULL;
}
dvbbasebin->trycam = TRUE;
}
static gint16 initial_pids[] = { 0, 1, 0x10, 0x11, 0x12, 0x14, -1 };
@ -334,8 +335,6 @@ dvb_base_bin_init (DvbBaseBin * dvbbasebin)
/* Expose tsparse source pad */
pad = gst_element_get_static_pad (dvbbasebin->tsparse, "src");
gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_DATA_DOWNSTREAM,
dvb_base_bin_ts_pad_probe_cb, dvbbasebin, NULL);
ghost = gst_ghost_pad_new ("src", pad);
gst_element_add_pad (GST_ELEMENT (dvbbasebin), ghost);
@ -358,6 +357,12 @@ dvb_base_bin_init (DvbBaseBin * dvbbasebin)
i++;
}
dvb_base_bin_rebuild_filter (dvbbasebin);
g_rec_mutex_init (&dvbbasebin->lock);
dvbbasebin->task =
gst_task_new ((GstTaskFunction) dvb_base_bin_task, dvbbasebin, NULL);
gst_task_set_lock (dvbbasebin->task, &dvbbasebin->lock);
dvbbasebin->poll = gst_poll_new_timer ();
}
static void
@ -560,28 +565,6 @@ dvb_base_bin_reset_pmtlist (DvbBaseBin * dvbbasebin)
dvbbasebin->pmtlist_changed = FALSE;
}
static GstPadProbeReturn
dvb_base_bin_ts_pad_probe_cb (GstPad * pad, GstPadProbeInfo * info,
gpointer user_data)
{
DvbBaseBin *dvbbasebin = GST_DVB_BASE_BIN (user_data);
if (dvbbasebin->hwcam) {
cam_device_poll (dvbbasebin->hwcam);
if (dvbbasebin->pmtlist_changed) {
if (cam_device_ready (dvbbasebin->hwcam)) {
GST_DEBUG_OBJECT (dvbbasebin, "pmt list changed");
dvb_base_bin_reset_pmtlist (dvbbasebin);
} else {
GST_DEBUG_OBJECT (dvbbasebin, "pmt list changed but CAM not ready");
}
}
}
return GST_PAD_PROBE_OK;
}
static void
dvb_base_bin_init_cam (DvbBaseBin * dvbbasebin)
{
@ -601,6 +584,8 @@ dvb_base_bin_init_cam (DvbBaseBin * dvbbasebin)
}
}
dvbbasebin->trycam = FALSE;
g_free (ca_file);
}
@ -615,9 +600,16 @@ dvb_base_bin_change_state (GstElement * element, GstStateChange transition)
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
dvb_base_bin_init_cam (dvbbasebin);
gst_poll_set_flushing (dvbbasebin->poll, FALSE);
g_rec_mutex_lock (&dvbbasebin->lock);
gst_task_start (dvbbasebin->task);
g_rec_mutex_unlock (&dvbbasebin->lock);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_poll_set_flushing (dvbbasebin->poll, TRUE);
g_rec_mutex_lock (&dvbbasebin->lock);
gst_task_stop (dvbbasebin->task);
g_rec_mutex_unlock (&dvbbasebin->lock);
dvb_base_bin_reset (dvbbasebin);
break;
default:
@ -992,3 +984,35 @@ dvb_base_bin_program_destroy (gpointer data)
g_free (program);
}
static void
dvb_base_bin_task (DvbBaseBin * basebin)
{
gint pollres;
GST_DEBUG_OBJECT (basebin, "In task");
/* If we haven't tried to open the cam, try now */
if (G_UNLIKELY (basebin->trycam))
dvb_base_bin_init_cam (basebin);
/* poll with timeout */
pollres = gst_poll_wait (basebin->poll, GST_SECOND / 4);
if (G_UNLIKELY (pollres == -1)) {
gst_task_stop (basebin->task);
return;
}
if (basebin->hwcam) {
cam_device_poll (basebin->hwcam);
if (basebin->pmtlist_changed) {
if (cam_device_ready (basebin->hwcam)) {
GST_DEBUG_OBJECT (basebin, "pmt list changed");
dvb_base_bin_reset_pmtlist (basebin);
} else {
GST_DEBUG_OBJECT (basebin, "pmt list changed but CAM not ready");
}
}
}
}

5
sys/dvb/dvbbasebin.h
View file

@ -51,6 +51,7 @@ struct _DvbBaseBin {
GstElement *buffer_queue;
GstElement *tsparse;
CamDevice *hwcam;
gboolean trycam;
GList *pmtlist;
gboolean pmtlist_changed;
gchar *filter;
@ -58,6 +59,10 @@ struct _DvbBaseBin {
GHashTable *programs;
gboolean disposed;
GstTask *task;
GstPoll *poll;
GRecMutex lock;
/* Cached value */
gchar *program_numbers;
};