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dvbsrc: Only open device read/write when needed

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Avoid starting up kernel thread when not needed
This commit is contained in:
Edward Hervey 2012-05-22 18:48:07 +02:00 committed by Sebastian Dröge
parent cca28a50a5
commit 2758cda0dc
1 changed files with 5 additions and 4 deletions
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9
sys/dvb/gstdvbsrc.c
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@ -718,7 +718,7 @@ gst_dvbsrc_close_devices (GstDvbSrc * object)
} }
static gboolean static gboolean
gst_dvbsrc_open_frontend (GstDvbSrc * object) gst_dvbsrc_open_frontend (GstDvbSrc * object, gboolean writable)
{ {
struct dvb_frontend_info fe_info; struct dvb_frontend_info fe_info;
const char *adapter_desc = NULL; const char *adapter_desc = NULL;
@ -731,7 +731,8 @@ gst_dvbsrc_open_frontend (GstDvbSrc * object)
GST_INFO_OBJECT (object, "Using frontend device: %s", frontend_dev); GST_INFO_OBJECT (object, "Using frontend device: %s", frontend_dev);
/* open frontend */ /* open frontend */
if ((object->fd_frontend = open (frontend_dev, O_RDWR)) < 0) { if ((object->fd_frontend =
open (frontend_dev, writable ? O_RDWR : O_RDONLY)) < 0) {
switch (errno) { switch (errno) {
case ENOENT: case ENOENT:
GST_ELEMENT_ERROR (object, RESOURCE, NOT_FOUND, GST_ELEMENT_ERROR (object, RESOURCE, NOT_FOUND,
@ -1010,7 +1011,7 @@ gst_dvbsrc_change_state (GstElement * element, GstStateChange transition)
switch (transition) { switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY: case GST_STATE_CHANGE_NULL_TO_READY:
/* open frontend then close it again, just so caps sent */ /* open frontend then close it again, just so caps sent */
gst_dvbsrc_open_frontend (src); gst_dvbsrc_open_frontend (src, FALSE);
if (src->fd_frontend) { if (src->fd_frontend) {
close (src->fd_frontend); close (src->fd_frontend);
} }
@ -1028,7 +1029,7 @@ gst_dvbsrc_start (GstBaseSrc * bsrc)
{ {
GstDvbSrc *src = GST_DVBSRC (bsrc); GstDvbSrc *src = GST_DVBSRC (bsrc);
gst_dvbsrc_open_frontend (src); gst_dvbsrc_open_frontend (src, TRUE);
if (!gst_dvbsrc_tune (src)) { if (!gst_dvbsrc_tune (src)) {
GST_ERROR_OBJECT (src, "Not able to lock on to the dvb channel"); GST_ERROR_OBJECT (src, "Not able to lock on to the dvb channel");
close (src->fd_frontend); close (src->fd_frontend);