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dvbsrc: factor out and reuse DVB-T/T2 bandwidth checks

Browse source 
Use new utility function as an additional check for delivery
system auto-detection.
This commit is contained in:
Reynaldo H. Verdejo Pinochet 2016-05-17 13:53:54 -07:00
parent 8e9e3f58c9
commit dde02e2d63
1 changed files with 37 additions and 20 deletions
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57
sys/dvb/gstdvbsrc.c
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@ -558,6 +558,7 @@ static void gst_dvbsrc_set_pes_filters (GstDvbSrc * object);
static void gst_dvbsrc_unset_pes_filters (GstDvbSrc * object);
static gboolean gst_dvbsrc_is_valid_modulation (guint delsys, guint mod);
static gboolean gst_dvbsrc_is_valid_trans_mode (guint delsys, guint mode);
static gboolean gst_dvbsrc_is_valid_bandwidth (guint delsys, guint bw);
/**
* This loop should be safe enough considering:
@ -2117,6 +2118,29 @@ gst_dvbsrc_is_valid_modulation (guint delsys, guint mod)
return FALSE;
}
static gboolean
gst_dvbsrc_is_valid_bandwidth (guint delsys, guint bw)
{
/* FIXME: check valid bandwidth values for other broadcast standards */
switch (delsys) {
case SYS_DVBT:
if (bw == 6000000 || bw == 7000000 || bw == 8000000)
return TRUE;
break;
case SYS_DVBT2:
if (bw == 1172000 || bw == 5000000 || bw == 6000000 ||
bw == 7000000 || bw == 8000000 || bw == 10000000) {
return TRUE;
}
break;
default:
GST_FIXME ("No bandwidth sanity checks implemented for this "
"delivery system");
return TRUE;
}
return FALSE;
}
static gboolean
gst_dvbsrc_get_size (GstBaseSrc * src, guint64 * size)
{
@ -2396,7 +2420,9 @@ gst_dvbsrc_guess_delsys (GstDvbSrc * object)
if (!gst_dvbsrc_is_valid_modulation (GPOINTER_TO_INT (candidate->data),
object->modulation) ||
!gst_dvbsrc_is_valid_trans_mode (GPOINTER_TO_INT (candidate->data),
object->transmission_mode)) {
object->transmission_mode) ||
!gst_dvbsrc_is_valid_bandwidth (GPOINTER_TO_INT (candidate->data),
object->bandwidth)) {
valid = g_list_delete_link (valid, candidate);
}
candidate = next;
@ -2522,25 +2548,10 @@ gst_dvbsrc_set_fe_params (GstDvbSrc * object, struct dtv_properties *props)
break;
case SYS_DVBT:
case SYS_DVBT2:
if (object->delsys == SYS_DVBT) {
if (object->bandwidth != 6000000 && object->bandwidth != 7000000 &&
object->bandwidth != 8000000) {
GST_WARNING_OBJECT (object, "Wrong DVB-T parameter value: bandwidth "
"is %d but only 6, 7 and 8 MHz are allowed", object->bandwidth);
}
} else if (object->delsys == SYS_DVBT2) {
if (object->stream_id > 255) {
GST_WARNING_OBJECT (object, "Wrong DVB-T2 stream ID '%d'. Value "
"can't be greater than 255", object->stream_id);
object->stream_id = NO_STREAM_ID_FILTER;
}
if (object->bandwidth != 6000000 && object->bandwidth != 7000000 &&
object->bandwidth != 8000000 && object->bandwidth != 1172000 &&
object->bandwidth != 5000000 && object->bandwidth != 10000000) {
GST_WARNING_OBJECT (object, "Wrong DVB-T2 parameter value: bandwidth "
"is '%d' but only 1.172, 5, 6, 7, 8 and 10 MHz are allowed",
object->bandwidth);
}
if (object->delsys == SYS_DVBT2 && object->stream_id > 255) {
GST_WARNING_OBJECT (object, "Wrong DVB-T2 stream ID '%d'. Value "
"can't be greater than 255", object->stream_id);
object->stream_id = NO_STREAM_ID_FILTER;
}
set_prop (props->props, &n, DTV_BANDWIDTH_HZ, object->bandwidth);
set_prop (props->props, &n, DTV_CODE_RATE_HP, object->code_rate_hp);
@ -2666,6 +2677,7 @@ gst_dvbsrc_set_fe_params (GstDvbSrc * object, struct dtv_properties *props)
return FALSE;
}
/* Informative checks */
if (!gst_dvbsrc_is_valid_modulation (object->delsys, object->modulation)) {
GST_WARNING_OBJECT (object,
"Attempting invalid modulation '%u' for delivery system '%u'",
@ -2677,6 +2689,11 @@ gst_dvbsrc_set_fe_params (GstDvbSrc * object, struct dtv_properties *props)
"Attempting invalid transmission mode '%u' for delivery system '%u'",
object->transmission_mode, object->delsys);
}
if (!gst_dvbsrc_is_valid_bandwidth (object->delsys, object->bandwidth)) {
GST_WARNING_OBJECT (object,
"Attempting invalid bandwidth '%u' for delivery system '%u'",
object->bandwidth, object->delsys);
}
set_prop (props->props, &n, DTV_TUNE, 0);
props->num = n;