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dvbsrc + dvb api buffer property to overcome buffer under reads

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Fabrizio (Misto) Milo 2011-02-01 11:39:16 -08:00 committed by Edward Hervey
parent c4ccca8795
commit fe5cf525e1
2 changed files with 75 additions and 57 deletions
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26
sys/dvb/gstdvbsrc.c
View file

@ -90,6 +90,7 @@ enum
ARG_DVBSRC_INVERSION,
ARG_DVBSRC_STATS_REPORTING_INTERVAL,
ARG_DVBSRC_TIMEOUT,
ARG_DVBSRC_DVB_BUFFER_SIZE
};
#define DEFAULT_ADAPTER 0
@ -109,7 +110,7 @@ enum
#define DEFAULT_INVERSION INVERSION_ON
#define DEFAULT_STATS_REPORTING_INTERVAL 100
#define DEFAULT_TIMEOUT 1000000 /* 1 second */
#define DEFAULT_DVB_BUFFER_SIZE (10*188*1024) /* Default is the same as the kernel default */
#define DEFAULT_BUFFER_SIZE 8192 /* not a property */
static void gst_dvbsrc_output_frontend_stats (GstDvbSrc * src);
@ -447,6 +448,13 @@ gst_dvbsrc_class_init (GstDvbSrcClass * klass)
g_param_spec_uint64 ("timeout", "Timeout",
"Post a message after timeout microseconds (0 = disabled)", 0,
G_MAXUINT64, DEFAULT_TIMEOUT, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
ARG_DVBSRC_DVB_BUFFER_SIZE,
g_param_spec_uint ("dvb-buffer-size",
"dvb-buffer-size",
"The kernel buffer size used by the DVB api",
0, G_MAXUINT, DEFAULT_DVB_BUFFER_SIZE, G_PARAM_READWRITE));
}
/* initialize the new element
@ -475,7 +483,7 @@ gst_dvbsrc_init (GstDvbSrc * object)
}
/* Pid 8192 on DVB gets the whole transport stream */
object->pids[0] = 8192;
object->dvb_buffer_size = DEFAULT_DVB_BUFFER_SIZE;
object->adapter_number = DEFAULT_ADAPTER;
object->frontend_number = DEFAULT_FRONTEND;
object->diseqc_src = DEFAULT_DISEQC_SRC;
@ -638,6 +646,9 @@ gst_dvbsrc_set_property (GObject * _object, guint prop_id,
case ARG_DVBSRC_TIMEOUT:
object->timeout = g_value_get_uint64 (value);
break;
case ARG_DVBSRC_DVB_BUFFER_SIZE:
object->dvb_buffer_size = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
@ -704,6 +715,9 @@ gst_dvbsrc_get_property (GObject * _object, guint prop_id,
case ARG_DVBSRC_TIMEOUT:
g_value_set_uint64 (value, object->timeout);
break;
case ARG_DVBSRC_DVB_BUFFER_SIZE:
g_value_set_uint (value, object->dvb_buffer_size);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
@ -850,9 +864,11 @@ gst_dvbsrc_open_dvr (GstDvbSrc * object)
return FALSE;
}
g_free (dvr_dev);
GST_INFO_OBJECT (object, "Setting buffer size");
if (ioctl (object->fd_dvr, DMX_SET_BUFFER_SIZE, 1024 * 1024) < 0) {
GST_INFO_OBJECT (object, "DMX_SET_BUFFER_SIZE failed");
GST_INFO_OBJECT (object, "Setting DVB kernel buffer size to %d ",
object->dvb_buffer_size);
if (ioctl (object->fd_dvr, DMX_SET_BUFFER_SIZE, object->dvb_buffer_size) < 0) {
GST_INFO_OBJECT (object, "ioctl DMX_SET_BUFFER_SIZE failed (%d)", errno);
return FALSE;
}
return TRUE;

4
sys/dvb/gstdvbsrc.h
View file

@ -75,6 +75,9 @@ G_BEGIN_DECLS
GstDvbSrcPol pol;
guint stats_interval;
guint stats_counter;
gboolean need_unlock;
guint dvb_buffer_size;
};
struct _GstDvbSrcClass
@ -90,5 +93,4 @@ G_BEGIN_DECLS
gboolean gst_dvbsrc_plugin_init (GstPlugin * plugin);
G_END_DECLS
#endif /* __GST_DVBSRC_H__ */