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gstreamer/sys/dvb/gstdvbsrc.c
Zaheer Merali 1f42ece99f dvbsrc: make some docs up to date
2009-03-04 18:42:15 +00:00

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/* GStreamer DVB source
* Copyright (C) 2006 Zaheer Abbas Merali <zaheerabbas at merali
* dot org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-dvbsrc
*
* dvbsrc can be used to capture video from DVB cards, DVB-T, DVB-S or DVB-T.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch dvbsrc modulation="QAM 64" trans-mode=8k bandwidth=8MHz frequency=514000000 code-rate-lp=AUTO code-rate-hp=2/3 guard=4 hierarchy=0 ! mpegtsdemux name=demux ! queue max-size-buffers=0 max-size-time=0 ! mpeg2dec ! xvimagesink demux. ! queue max-size-buffers=0 max-size-time=0 ! mad ! alsasink
* ]| Captures a full transport stream from dvb card 0 that is a DVB-T card at tuned frequency 514000000 with other parameters as seen in the pipeline and renders the first tv program on the transport stream.
* |[
* gst-launch dvbsrc modulation="QAM 64" trans-mode=8k bandwidth=8 frequency=514000000 code-rate-lp=AUTO code-rate-hp=2/3 guard=4 hierarchy=0 pids=100:256:257 ! mpegtsdemux name=demux ! queue max-size-buffers=0 max-size-time=0 ! mpeg2dec ! xvimagesink demux. ! queue max-size-buffers=0 max-size-time=0 ! mad ! alsasink
* ]| Captures and renders a transport stream from dvb card 0 that is a DVB-T card for a program at tuned frequency 514000000 with PMT pid 100 and elementary stream pids of 256, 257 with other parameters as seen in the pipeline.
* |[
* gst-launch dvbsrc polarity="h" frequency=11302000 symbol-rate=27500 diseqc-src=0 pids=50:102:103 ! mpegtsdemux name=demux ! queue max-size-buffers=0 max-size-time=0 ! mpeg2dec ! xvimagesink demux. ! queue max-size-buffers=0 max-size-time=0 ! mad ! alsasink
* ]| Captures and renders a transport stream from dvb card 0 that is a DVB-S card for a program at tuned frequency 11302000 Hz, symbol rate of 27500 kHz with PMT pid of 50 and elementary stream pids of 102 and 103.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstdvbsrc.h"
#include <gst/gst.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
#include <fcntl.h>
#include <error.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "_stdint.h"
#define _XOPEN_SOURCE 500
#include <unistd.h>
#include <linux/dvb/version.h>
#include <linux/dvb/frontend.h>
#include <linux/dvb/dmx.h>
#include <gst/gst-i18n-plugin.h>
GST_DEBUG_CATEGORY_STATIC (gstdvbsrc_debug);
#define GST_CAT_DEFAULT (gstdvbsrc_debug)
#define SLOF (11700*1000UL)
#define LOF1 (9750*1000UL)
#define LOF2 (10600*1000UL)
static GstElementDetails dvbsrc_details = {
"DVB Source",
"Source/Video",
"Digital Video Broadcast Source",
"P2P-VCR, C-Lab, University of Paderborn\n"
"Zaheer Abbas Merali <zaheerabbas at merali dot org>"
};
/* Arguments */
enum
{
ARG_0,
ARG_DVBSRC_ADAPTER,
ARG_DVBSRC_FRONTEND,
ARG_DVBSRC_DISEQC_SRC,
ARG_DVBSRC_FREQUENCY,
ARG_DVBSRC_POLARITY,
ARG_DVBSRC_PIDS,
ARG_DVBSRC_SYM_RATE,
ARG_DVBSRC_BANDWIDTH,
ARG_DVBSRC_CODE_RATE_HP,
ARG_DVBSRC_CODE_RATE_LP,
ARG_DVBSRC_GUARD,
ARG_DVBSRC_MODULATION,
ARG_DVBSRC_TRANSMISSION_MODE,
ARG_DVBSRC_HIERARCHY_INF,
ARG_DVBSRC_TUNE,
ARG_DVBSRC_INVERSION,
ARG_DVBSRC_STATS_REPORTING_INTERVAL
};
static void gst_dvbsrc_output_frontend_stats (GstDvbSrc * src);
#define GST_TYPE_DVBSRC_CODE_RATE (gst_dvbsrc_code_rate_get_type ())
static GType
gst_dvbsrc_code_rate_get_type (void)
{
static GType dvbsrc_code_rate_type = 0;
static GEnumValue code_rate_types[] = {
{FEC_NONE, "NONE", "NONE"},
{FEC_1_2, "1/2", "1/2"},
{FEC_2_3, "2/3", "2/3"},
{FEC_3_4, "3/4", "3/4"},
{FEC_4_5, "4/5", "4/5"},
{FEC_5_6, "5/6", "5/6"},
{FEC_6_7, "6/7", "6/7"},
{FEC_7_8, "7/8", "7/8"},
{FEC_8_9, "8/9", "8/9"},
{FEC_AUTO, "AUTO", ""},
{0, NULL, NULL},
};
if (!dvbsrc_code_rate_type) {
dvbsrc_code_rate_type =
g_enum_register_static ("GstDvbSrcCode_Rate", code_rate_types);
}
return dvbsrc_code_rate_type;
}
#define GST_TYPE_DVBSRC_MODULATION (gst_dvbsrc_modulation_get_type ())
static GType
gst_dvbsrc_modulation_get_type (void)
{
static GType dvbsrc_modulation_type = 0;
static GEnumValue modulation_types[] = {
{QPSK, "QPSK", "QPSK"},
{QAM_16, "QAM 16", "QAM 16"},
{QAM_32, "QAM 32", "QAM 32"},
{QAM_64, "QAM 64", "QAM 64"},
{QAM_128, "QAM 128", "QAM 128"},
{QAM_256, "QAM 256", "QAM 256"},
{QAM_AUTO, "AUTO", "AUTO"},
{VSB_8, "8VSB", "8VSB"},
{VSB_16, "16VSB", "16VSB"},
{0, NULL, NULL},
};
if (!dvbsrc_modulation_type) {
dvbsrc_modulation_type =
g_enum_register_static ("GstDvbSrcModulation", modulation_types);
}
return dvbsrc_modulation_type;
}
#define GST_TYPE_DVBSRC_TRANSMISSION_MODE (gst_dvbsrc_transmission_mode_get_type ())
static GType
gst_dvbsrc_transmission_mode_get_type (void)
{
static GType dvbsrc_transmission_mode_type = 0;
static GEnumValue transmission_mode_types[] = {
{TRANSMISSION_MODE_2K, "2k", "2k"},
{TRANSMISSION_MODE_8K, "8k", "8k"},
{TRANSMISSION_MODE_AUTO, "AUTO", "AUTO"},
{0, NULL, NULL},
};
if (!dvbsrc_transmission_mode_type) {
dvbsrc_transmission_mode_type =
g_enum_register_static ("GstDvbSrcTransmission_Mode",
transmission_mode_types);
}
return dvbsrc_transmission_mode_type;
}
#define GST_TYPE_DVBSRC_BANDWIDTH (gst_dvbsrc_bandwidth_get_type ())
static GType
gst_dvbsrc_bandwidth_get_type (void)
{
static GType dvbsrc_bandwidth_type = 0;
static GEnumValue bandwidth_types[] = {
{BANDWIDTH_8_MHZ, "8", "8"},
{BANDWIDTH_7_MHZ, "7", "7"},
{BANDWIDTH_6_MHZ, "6", "6"},
{BANDWIDTH_AUTO, "AUTO", "AUTO"},
{0, NULL, NULL},
};
if (!dvbsrc_bandwidth_type) {
dvbsrc_bandwidth_type =
g_enum_register_static ("GstDvbSrcBandwidth", bandwidth_types);
}
return dvbsrc_bandwidth_type;
}
#define GST_TYPE_DVBSRC_GUARD (gst_dvbsrc_guard_get_type ())
static GType
gst_dvbsrc_guard_get_type (void)
{
static GType dvbsrc_guard_type = 0;
static GEnumValue guard_types[] = {
{GUARD_INTERVAL_1_32, "32", "32"},
{GUARD_INTERVAL_1_16, "16", "16"},
{GUARD_INTERVAL_1_8, "8", "8"},
{GUARD_INTERVAL_1_4, "4", "4"},
{GUARD_INTERVAL_AUTO, "AUTO", "AUTO"},
{0, NULL, NULL},
};
if (!dvbsrc_guard_type) {
dvbsrc_guard_type = g_enum_register_static ("GstDvbSrcGuard", guard_types);
}
return dvbsrc_guard_type;
}
#define GST_TYPE_DVBSRC_HIERARCHY (gst_dvbsrc_hierarchy_get_type ())
static GType
gst_dvbsrc_hierarchy_get_type (void)
{
static GType dvbsrc_hierarchy_type = 0;
static GEnumValue hierarchy_types[] = {
{HIERARCHY_NONE, "NONE", "NONE"},
{HIERARCHY_1, "1", "1"},
{HIERARCHY_2, "2", "2"},
{HIERARCHY_4, "4", "4"},
{HIERARCHY_AUTO, "AUTO", "AUTO"},
{0, NULL, NULL},
};
if (!dvbsrc_hierarchy_type) {
dvbsrc_hierarchy_type =
g_enum_register_static ("GstDvbSrcHierarchy", hierarchy_types);
}
return dvbsrc_hierarchy_type;
}
#define GST_TYPE_DVBSRC_INVERSION (gst_dvbsrc_inversion_get_type ())
static GType
gst_dvbsrc_inversion_get_type (void)
{
static GType dvbsrc_inversion_type = 0;
static GEnumValue inversion_types[] = {
{INVERSION_OFF, "OFF", "OFF"},
{INVERSION_ON, "ON", "ON"},
{INVERSION_AUTO, "AUTO", "AUTO"},
{0, NULL, NULL},
};
if (!dvbsrc_inversion_type) {
dvbsrc_inversion_type =
g_enum_register_static ("GstDvbSrcInversion", inversion_types);
}
return dvbsrc_inversion_type;
}
static void gst_dvbsrc_finalize (GObject * object);
static void gst_dvbsrc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_dvbsrc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstFlowReturn gst_dvbsrc_create (GstPushSrc * element,
GstBuffer ** buffer);
static gboolean gst_dvbsrc_start (GstBaseSrc * bsrc);
static gboolean gst_dvbsrc_stop (GstBaseSrc * bsrc);
static GstStateChangeReturn gst_dvbsrc_change_state (GstElement * element,
GstStateChange transition);
static gboolean gst_dvbsrc_unlock (GstBaseSrc * bsrc);
static gboolean gst_dvbsrc_is_seekable (GstBaseSrc * bsrc);
static gboolean gst_dvbsrc_get_size (GstBaseSrc * src, guint64 * size);
static gboolean gst_dvbsrc_tune (GstDvbSrc * object);
static void gst_dvbsrc_set_pes_filters (GstDvbSrc * object);
static void gst_dvbsrc_unset_pes_filters (GstDvbSrc * object);
static gboolean gst_dvbsrc_frontend_status (GstDvbSrc * object);
static GstStaticPadTemplate ts_src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS
("video/mpegts, "
"mpegversion = (int) 2," "systemstream = (boolean) TRUE"));
/*
******************************
* *
* GObject Related *
* *
* *
******************************
*/
GST_BOILERPLATE (GstDvbSrc, gst_dvbsrc, GstPushSrc, GST_TYPE_PUSH_SRC);
static void
gst_dvbsrc_base_init (gpointer gclass)
{
GstDvbSrcClass *klass = (GstDvbSrcClass *) gclass;
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&ts_src_factory));
gst_element_class_set_details (element_class, &dvbsrc_details);
}
/* initialize the plugin's class */
static void
gst_dvbsrc_class_init (GstDvbSrcClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseSrcClass *gstbasesrc_class;
GstPushSrcClass *gstpushsrc_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstbasesrc_class = (GstBaseSrcClass *) klass;
gstpushsrc_class = (GstPushSrcClass *) klass;
gobject_class->set_property = gst_dvbsrc_set_property;
gobject_class->get_property = gst_dvbsrc_get_property;
gobject_class->finalize = gst_dvbsrc_finalize;
gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_dvbsrc_change_state);
gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_dvbsrc_start);
gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_dvbsrc_stop);
gstbasesrc_class->unlock = GST_DEBUG_FUNCPTR (gst_dvbsrc_unlock);
gstbasesrc_class->is_seekable = GST_DEBUG_FUNCPTR (gst_dvbsrc_is_seekable);
gstbasesrc_class->get_size = GST_DEBUG_FUNCPTR (gst_dvbsrc_get_size);
gstpushsrc_class->create = gst_dvbsrc_create;
g_object_class_install_property (gobject_class, ARG_DVBSRC_ADAPTER,
g_param_spec_int ("adapter",
"The adapter device number",
"The adapter device number (eg. 0 for adapter0)", 0, 16, 0,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_FRONTEND,
g_param_spec_int ("frontend",
"The frontend device number",
"The frontend device number (eg. 0 for frontend0)", 0, 16, 0,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_FREQUENCY,
g_param_spec_int ("frequency",
"frequency", "Frequency", 0, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_POLARITY,
g_param_spec_string ("polarity",
"polarity", "Polarity [vhHV] (DVB-S)", "h", G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_PIDS,
g_param_spec_string ("pids",
"pids",
"Colon seperated list of pids (eg. 110:120)",
"8192", G_PARAM_WRITABLE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_SYM_RATE,
g_param_spec_int ("symbol-rate",
"symbol rate",
"Symbol Rate (DVB-S, DVB-C)",
0, G_MAXINT, DEFAULT_SYMBOL_RATE, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_TUNE,
g_param_spec_pointer ("tune",
"tune", "Atomically tune to channel. (For Apps)", G_PARAM_WRITABLE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_DISEQC_SRC,
g_param_spec_int ("diseqc-source",
"diseqc source",
"DISEqC selected source (-1 disabled) (DVB-S)",
-1, 7, DEFAULT_DISEQC_SRC, G_PARAM_READWRITE));
/* DVB-T, additional properties */
g_object_class_install_property (gobject_class, ARG_DVBSRC_BANDWIDTH,
g_param_spec_enum ("bandwidth",
"bandwidth",
"Bandwidth (DVB-T)", GST_TYPE_DVBSRC_BANDWIDTH, 1,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_CODE_RATE_HP,
g_param_spec_enum ("code-rate-hp",
"code-rate-hp",
"High Priority Code Rate (DVB-T, DVB-S and DVB-C)",
GST_TYPE_DVBSRC_CODE_RATE, FEC_AUTO, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_CODE_RATE_LP,
g_param_spec_enum ("code-rate-lp",
"code-rate-lp",
"Low Priority Code Rate (DVB-T)",
GST_TYPE_DVBSRC_CODE_RATE, 1, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_GUARD,
g_param_spec_enum ("guard",
"guard",
"Guard Interval (DVB-T)",
GST_TYPE_DVBSRC_GUARD, 1, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_MODULATION,
g_param_spec_enum ("modulation",
"modulation",
"Modulation (DVB-T and DVB-C)",
GST_TYPE_DVBSRC_MODULATION, 1, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
ARG_DVBSRC_TRANSMISSION_MODE,
g_param_spec_enum ("trans-mode",
"trans-mode",
"Transmission Mode (DVB-T)",
GST_TYPE_DVBSRC_TRANSMISSION_MODE, 1, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_HIERARCHY_INF,
g_param_spec_enum ("hierarchy",
"hierarchy",
"Hierarchy Information (DVB-T)",
GST_TYPE_DVBSRC_HIERARCHY, 1, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_INVERSION,
g_param_spec_enum ("inversion",
"inversion",
"Inversion Information (DVB-T and DVB-C)",
GST_TYPE_DVBSRC_INVERSION, 1, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
ARG_DVBSRC_STATS_REPORTING_INTERVAL,
g_param_spec_uint ("stats-reporting-interval",
"stats-reporting-interval",
"The number of reads before reporting frontend stats",
0, G_MAXUINT, 100, G_PARAM_READWRITE));
}
/* initialize the new element
* instantiate pads and add them to element
* set functions
* initialize structure
*/
static void
gst_dvbsrc_init (GstDvbSrc * object, GstDvbSrcClass * klass)
{
int i = 0;
GST_INFO_OBJECT (object, "gst_dvbsrc_init");
/* We are a live source */
gst_base_src_set_live (GST_BASE_SRC (object), TRUE);
object->fd_frontend = -1;
object->fd_dvr = -1;
for (i = 0; i < MAX_FILTERS; i++) {
object->pids[i] = G_MAXUINT16;
object->fd_filters[i] = -1;
}
/* Pid 8192 on DVB gets the whole transport stream */
object->pids[0] = 8192;
object->adapter_number = 0;
object->frontend_number = 0;
object->sym_rate = DEFAULT_SYMBOL_RATE;
object->diseqc_src = DEFAULT_DISEQC_SRC;
object->send_diseqc = FALSE;
object->code_rate_hp = FEC_AUTO;
object->tune_mutex = g_mutex_new ();
}
static void
gst_dvbsrc_set_property (GObject * _object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstDvbSrc *object;
g_return_if_fail (GST_IS_DVBSRC (_object));
object = GST_DVBSRC (_object);
switch (prop_id) {
case ARG_DVBSRC_ADAPTER:
object->adapter_number = g_value_get_int (value);
break;
case ARG_DVBSRC_FRONTEND:
object->frontend_number = g_value_get_int (value);
break;
case ARG_DVBSRC_DISEQC_SRC:
if (object->diseqc_src != g_value_get_int (value)) {
object->diseqc_src = g_value_get_int (value);
object->send_diseqc = TRUE;
}
GST_INFO_OBJECT (object, "Set Property: ARG_DVBSRC_DISEQC_ID");
break;
case ARG_DVBSRC_FREQUENCY:
object->freq = g_value_get_int (value);
GST_INFO_OBJECT (object, "Set Property: ARG_DVBSRC_FREQUENCY");
break;
case ARG_DVBSRC_POLARITY:
{
const char *s = NULL;
s = g_value_get_string (value);
if (s != NULL)
object->pol = (s[0] == 'h' || s[0] == 'H') ? DVB_POL_H : DVB_POL_V;
}
GST_INFO_OBJECT (object, "Set Property: ARG_DVBSRC_POLARITY");
break;
case ARG_DVBSRC_PIDS:
{
gchar *pid_string;
GST_INFO_OBJECT (object, "Set Property: ARG_DVBSRC_PIDS");
pid_string = g_value_dup_string (value);
if (!strcmp (pid_string, "8192")) {
/* get the whole ts */
object->pids[0] = 8192;
} else {
int pid = 0;
int pid_count;
gchar **pids;
char **tmp;
tmp = pids = g_strsplit (pid_string, ":", MAX_FILTERS);
if (pid_string)
g_free (pid_string);
/* always add the PAT and CAT pids */
object->pids[0] = 0;
object->pids[1] = 1;
pid_count = 2;
while (*pids != NULL && pid_count < MAX_FILTERS) {
pid = strtol (*pids, NULL, 0);
if (pid > 1 && pid <= 8192) {
GST_INFO_OBJECT (object, "Parsed Pid: %d\n", pid);
object->pids[pid_count] = pid;
pid_count++;
}
pids++;
}
g_strfreev (tmp);
}
/* if we are in playing or paused, then set filters now */
GST_INFO_OBJECT (object, "checking if playing for setting pes filters");
if (GST_ELEMENT (object)->current_state == GST_STATE_PLAYING ||
GST_ELEMENT (object)->current_state == GST_STATE_PAUSED) {
GST_INFO_OBJECT (object, "Setting pes filters now");
gst_dvbsrc_set_pes_filters (object);
}
}
break;
case ARG_DVBSRC_SYM_RATE:
object->sym_rate = g_value_get_int (value);
GST_INFO_OBJECT (object, "Set Property: ARG_DVBSRC_SYM_RATE to value %d",
g_value_get_int (value));
break;
case ARG_DVBSRC_BANDWIDTH:
object->bandwidth = g_value_get_enum (value);
break;
case ARG_DVBSRC_CODE_RATE_HP:
object->code_rate_hp = g_value_get_enum (value);
break;
case ARG_DVBSRC_CODE_RATE_LP:
object->code_rate_lp = g_value_get_enum (value);
break;
case ARG_DVBSRC_GUARD:
object->guard_interval = g_value_get_enum (value);
break;
case ARG_DVBSRC_MODULATION:
object->modulation = g_value_get_enum (value);
break;
case ARG_DVBSRC_TRANSMISSION_MODE:
object->transmission_mode = g_value_get_enum (value);
break;
case ARG_DVBSRC_HIERARCHY_INF:
object->hierarchy_information = g_value_get_enum (value);
break;
case ARG_DVBSRC_INVERSION:
object->inversion = g_value_get_enum (value);
break;
case ARG_DVBSRC_TUNE:
GST_INFO_OBJECT (object, "Set Property: ARG_DVBSRC_TUNE");
/* if we are in paused/playing state tune now, otherwise in ready to paused state change */
if (gst_element_get_state
(GST_ELEMENT (object), NULL, NULL,
GST_CLOCK_TIME_NONE) > GST_STATE_READY) {
g_mutex_lock (object->tune_mutex);
gst_dvbsrc_tune (object);
g_mutex_unlock (object->tune_mutex);
}
break;
case ARG_DVBSRC_STATS_REPORTING_INTERVAL:
object->stats_interval = g_value_get_uint (value);
object->stats_counter = 0;
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gst_dvbsrc_get_property (GObject * _object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstDvbSrc *object;
g_return_if_fail (GST_IS_DVBSRC (_object));
object = GST_DVBSRC (_object);
switch (prop_id) {
case ARG_DVBSRC_ADAPTER:
g_value_set_int (value, object->adapter_number);
break;
case ARG_DVBSRC_FRONTEND:
g_value_set_int (value, object->frontend_number);
break;
case ARG_DVBSRC_FREQUENCY:
g_value_set_int (value, object->freq);
break;
case ARG_DVBSRC_POLARITY:
if (object->pol == DVB_POL_H)
g_value_set_string (value, "H");
else
g_value_set_string (value, "V");
break;
case ARG_DVBSRC_SYM_RATE:
g_value_set_int (value, object->sym_rate);
break;
case ARG_DVBSRC_DISEQC_SRC:
g_value_set_int (value, object->diseqc_src);
break;
case ARG_DVBSRC_BANDWIDTH:
g_value_set_enum (value, object->bandwidth);
break;
case ARG_DVBSRC_CODE_RATE_HP:
g_value_set_enum (value, object->code_rate_hp);
break;
case ARG_DVBSRC_CODE_RATE_LP:
g_value_set_enum (value, object->code_rate_lp);
break;
case ARG_DVBSRC_GUARD:
g_value_set_enum (value, object->guard_interval);
break;
case ARG_DVBSRC_MODULATION:
g_value_set_enum (value, object->modulation);
break;
case ARG_DVBSRC_TRANSMISSION_MODE:
g_value_set_enum (value, object->transmission_mode);
break;
case ARG_DVBSRC_HIERARCHY_INF:
g_value_set_enum (value, object->hierarchy_information);
break;
case ARG_DVBSRC_INVERSION:
g_value_set_enum (value, object->inversion);
break;
case ARG_DVBSRC_STATS_REPORTING_INTERVAL:
g_value_set_uint (value, object->stats_interval);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static gboolean
gst_dvbsrc_close_devices (GstDvbSrc * object)
{
gst_dvbsrc_unset_pes_filters (object);
close (object->fd_dvr);
object->fd_dvr = -1;
close (object->fd_frontend);
object->fd_frontend = -1;
return TRUE;
}
static gboolean
gst_dvbsrc_open_frontend (GstDvbSrc * object)
{
struct dvb_frontend_info fe_info;
char *adapter_desc = NULL;
gchar *frontend_dev;
GstStructure *adapter_structure;
char *adapter_name = NULL;
frontend_dev = g_strdup_printf ("/dev/dvb/adapter%d/frontend%d",
object->adapter_number, object->frontend_number);
GST_INFO_OBJECT (object, "Using frontend device: %s", frontend_dev);
/* open frontend */
if ((object->fd_frontend = open (frontend_dev, O_RDWR)) < 0) {
switch (errno) {
case ENOENT:
GST_ELEMENT_ERROR (object, RESOURCE, NOT_FOUND,
(_("Device \"%s\" does not exist."), frontend_dev), (NULL));
break;
default:
GST_ELEMENT_ERROR (object, RESOURCE, OPEN_READ_WRITE,
(_("Could not open frontend device \"%s\"."), frontend_dev),
GST_ERROR_SYSTEM);
break;
}
close (object->fd_frontend);
g_free (frontend_dev);
return FALSE;
}
if (ioctl (object->fd_frontend, FE_GET_INFO, &fe_info) < 0) {
GST_ELEMENT_ERROR (object, RESOURCE, SETTINGS,
(_("Could not get settings from frontend device \"%s\"."),
frontend_dev), GST_ERROR_SYSTEM);
close (object->fd_frontend);
g_free (frontend_dev);
return FALSE;
}
adapter_name = g_strdup (fe_info.name);
object->adapter_type = fe_info.type;
switch (object->adapter_type) {
case FE_QPSK:
adapter_desc = "DVB-S";
adapter_structure = gst_structure_new ("dvb-adapter",
"type", G_TYPE_STRING, adapter_desc,
"name", G_TYPE_STRING, adapter_name,
"auto-fec", G_TYPE_BOOLEAN, fe_info.caps & FE_CAN_FEC_AUTO, NULL);
break;
case FE_QAM:
adapter_desc = "DVB-C";
adapter_structure = gst_structure_new ("dvb-adapter",
"type", G_TYPE_STRING, adapter_desc,
"name", G_TYPE_STRING, adapter_name,
"auto-inversion", G_TYPE_BOOLEAN,
fe_info.caps & FE_CAN_INVERSION_AUTO, "auto-qam", G_TYPE_BOOLEAN,
fe_info.caps & FE_CAN_QAM_AUTO, "auto-fec", G_TYPE_BOOLEAN,
fe_info.caps & FE_CAN_FEC_AUTO, NULL);
break;
case FE_OFDM:
adapter_desc = "DVB-T";
adapter_structure = gst_structure_new ("dvb-adapter",
"type", G_TYPE_STRING, adapter_desc,
"name", G_TYPE_STRING, adapter_name,
"auto-inversion", G_TYPE_BOOLEAN,
fe_info.caps & FE_CAN_INVERSION_AUTO, "auto-qam", G_TYPE_BOOLEAN,
fe_info.caps & FE_CAN_QAM_AUTO, "auto-transmission-mode",
G_TYPE_BOOLEAN, fe_info.caps & FE_CAN_TRANSMISSION_MODE_AUTO,
"auto-guard-interval", G_TYPE_BOOLEAN,
fe_info.caps & FE_CAN_GUARD_INTERVAL_AUTO, "auto-hierarchy",
G_TYPE_BOOLEAN, fe_info.caps % FE_CAN_HIERARCHY_AUTO, "auto-fec",
G_TYPE_BOOLEAN, fe_info.caps & FE_CAN_FEC_AUTO, NULL);
break;
case FE_ATSC:
adapter_desc = "ATSC";
adapter_structure = gst_structure_new ("dvb-adapter",
"type", G_TYPE_STRING, adapter_desc,
"name", G_TYPE_STRING, adapter_name, NULL);
break;
default:
g_error ("Unknown frontend type: %d", object->adapter_type);
adapter_structure = gst_structure_new ("dvb-adapter",
"type", G_TYPE_STRING, "unknown", NULL);
}
GST_INFO_OBJECT (object, "DVB card: %s ", adapter_name);
gst_element_post_message (GST_ELEMENT_CAST (object), gst_message_new_element
(GST_OBJECT (object), adapter_structure));
g_free (frontend_dev);
g_free (adapter_name);
return TRUE;
}
static gboolean
gst_dvbsrc_open_dvr (GstDvbSrc * object)
{
gchar *dvr_dev;
dvr_dev = g_strdup_printf ("/dev/dvb/adapter%d/dvr%d",
object->adapter_number, object->frontend_number);
GST_INFO_OBJECT (object, "Using dvr device: %s", dvr_dev);
/* open DVR */
if ((object->fd_dvr = open (dvr_dev, O_RDONLY | O_NONBLOCK)) < 0) {
switch (errno) {
case ENOENT:
GST_ELEMENT_ERROR (object, RESOURCE, NOT_FOUND,
(_("Device \"%s\" does not exist."), dvr_dev), (NULL));
break;
default:
GST_ELEMENT_ERROR (object, RESOURCE, OPEN_READ,
(_("Could not open file \"%s\" for reading."), dvr_dev),
GST_ERROR_SYSTEM);
break;
}
g_free (dvr_dev);
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");
return FALSE;
}
return TRUE;
}
static void
gst_dvbsrc_finalize (GObject * _object)
{
GstDvbSrc *object;
GST_DEBUG_OBJECT (_object, "gst_dvbsrc_finalize");
g_return_if_fail (GST_IS_DVBSRC (_object));
object = GST_DVBSRC (_object);
/* freeing the mutex segfaults somehow */
g_mutex_free (object->tune_mutex);
if (G_OBJECT_CLASS (parent_class)->finalize)
G_OBJECT_CLASS (parent_class)->finalize (_object);
}
/*
******************************
* *
* Plugin Realisation *
* *
******************************
*/
/* entry point to initialize the plug-in
* initialize the plug-in itself
* register the element factories and pad templates
* register the features
*/
gboolean
gst_dvbsrc_plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (gstdvbsrc_debug, "dvbsrc", 0, "DVB Source Element");
#ifdef ENABLE_NLS
GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
LOCALEDIR);
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
#endif /* ENABLE_NLS */
return gst_element_register (plugin, "dvbsrc", GST_RANK_NONE,
GST_TYPE_DVBSRC);
}
static GstBuffer *
read_device (int fd, int adapter_number, int frontend_number, int size,
GstDvbSrc * object)
{
int count = 0;
struct pollfd pfd[1];
int ret_val = 0;
guint attempts = 0;
const int TIMEOUT = 100;
GstBuffer *buf = gst_buffer_new_and_alloc (size);
g_return_val_if_fail (GST_IS_BUFFER (buf), NULL);
if (fd < 0) {
return NULL;
}
pfd[0].fd = fd;
pfd[0].events = POLLIN;
while (count < size) {
ret_val = poll (pfd, 1, TIMEOUT);
if (ret_val > 0) {
if (pfd[0].revents & POLLIN) {
int tmp = 0;
tmp = read (fd, GST_BUFFER_DATA (buf) + count, size - count);
if (tmp < 0) {
GST_WARNING
("Unable to read from device: /dev/dvb/adapter%d/dvr%d (%d)",
adapter_number, frontend_number, errno);
attempts += 1;
if (attempts % 10 == 0) {
GST_WARNING
("Unable to read from device after %u attempts: /dev/dvb/adapter%d/dvr%d",
attempts, adapter_number, frontend_number);
}
} else
count = count + tmp;
} else {
GST_LOG ("revents = %d\n", pfd[0].revents);
}
} else if (ret_val == 0) { // poll timeout
attempts += 1;
GST_INFO ("Reading from device /dev/dvb/adapter%d/dvr%d timedout (%d)",
adapter_number, frontend_number, attempts);
if (attempts % 10 == 0) {
GST_WARNING
("Unable to read after %u attempts from device: /dev/dvb/adapter%d/dvr%d (%d)",
attempts, adapter_number, frontend_number, errno);
gst_element_post_message (GST_ELEMENT_CAST (object),
gst_message_new_element (GST_OBJECT (object),
gst_structure_empty_new ("dvb-read-failure")));
}
} else if (errno == -EINTR) { // poll interrupted
if (attempts % 50 == 0) {
gst_buffer_unref (buf);
return NULL;
};
}
}
GST_BUFFER_SIZE (buf) = count;
GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE;
return buf;
}
static GstFlowReturn
gst_dvbsrc_create (GstPushSrc * element, GstBuffer ** buf)
{
gint buffer_size;
GstFlowReturn retval = GST_FLOW_ERROR;
GstDvbSrc *object;
object = GST_DVBSRC (element);
GST_LOG ("fd_dvr: %d", object->fd_dvr);
//g_object_get(G_OBJECT(object), "blocksize", &buffer_size, NULL);
buffer_size = DEFAULT_BUFFER_SIZE;
/* device can not be tuned during read */
g_mutex_lock (object->tune_mutex);
if (object->fd_dvr > -1) {
/* --- Read TS from DVR device --- */
GST_DEBUG_OBJECT (object, "Reading from DVR device");
*buf = read_device (object->fd_dvr, object->adapter_number,
object->frontend_number, buffer_size, object);
if (*buf != NULL) {
GstCaps *caps;
retval = GST_FLOW_OK;
caps = gst_pad_get_caps (GST_BASE_SRC_PAD (object));
gst_buffer_set_caps (*buf, caps);
gst_caps_unref (caps);
} else {
GST_DEBUG_OBJECT (object, "Failed to read from device");
gst_element_post_message (GST_ELEMENT_CAST (object),
gst_message_new_element (GST_OBJECT (object),
gst_structure_empty_new ("dvb-read-failure")));
}
if (object->stats_interval != 0 &&
++object->stats_counter == object->stats_interval) {
gst_dvbsrc_output_frontend_stats (object);
object->stats_counter = 0;
}
}
g_mutex_unlock (object->tune_mutex);
return retval;
}
static GstStateChangeReturn
gst_dvbsrc_change_state (GstElement * element, GstStateChange transition)
{
GstDvbSrc *src;
GstStateChangeReturn ret;
src = GST_DVBSRC (element);
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
/* open frontend then close it again, just so caps sent */
gst_dvbsrc_open_frontend (src);
if (src->fd_frontend) {
close (src->fd_frontend);
}
break;
default:
break;
}
return ret;
}
static gboolean
gst_dvbsrc_start (GstBaseSrc * bsrc)
{
GstDvbSrc *src = GST_DVBSRC (bsrc);
gst_dvbsrc_open_frontend (src);
if (!gst_dvbsrc_tune (src)) {
GST_ERROR_OBJECT (src, "Not able to lock on to the dvb channel");
close (src->fd_frontend);
return FALSE;
}
if (!gst_dvbsrc_frontend_status (src)) {
/* unset filters also */
gst_dvbsrc_unset_pes_filters (src);
close (src->fd_frontend);
return FALSE;
}
if (!gst_dvbsrc_open_dvr (src)) {
GST_ERROR_OBJECT (src, "Not able to open dvr_device");
/* unset filters also */
gst_dvbsrc_unset_pes_filters (src);
close (src->fd_frontend);
return FALSE;
}
return TRUE;
}
static gboolean
gst_dvbsrc_stop (GstBaseSrc * bsrc)
{
GstDvbSrc *src = GST_DVBSRC (bsrc);
gst_dvbsrc_close_devices (src);
return TRUE;
}
static gboolean
gst_dvbsrc_unlock (GstBaseSrc * bsrc)
{
return TRUE;
}
static gboolean
gst_dvbsrc_is_seekable (GstBaseSrc * bsrc)
{
return FALSE;
}
static gboolean
gst_dvbsrc_get_size (GstBaseSrc * src, guint64 * size)
{
return FALSE;
}
static void
gst_dvbsrc_output_frontend_stats (GstDvbSrc * src)
{
fe_status_t status;
uint16_t snr, _signal;
uint32_t ber, uncorrected_blocks;
GstMessage *message;
GstStructure *structure;
int fe_fd = src->fd_frontend;
ioctl (fe_fd, FE_READ_STATUS, &status);
ioctl (fe_fd, FE_READ_SIGNAL_STRENGTH, &_signal);
ioctl (fe_fd, FE_READ_SNR, &snr);
ioctl (fe_fd, FE_READ_BER, &ber);
ioctl (fe_fd, FE_READ_UNCORRECTED_BLOCKS, &uncorrected_blocks);
structure = gst_structure_new ("dvb-frontend-stats", "status", G_TYPE_INT,
status, "signal", G_TYPE_INT, _signal, "snr", G_TYPE_INT, snr,
"ber", G_TYPE_INT, ber, "unc", G_TYPE_INT, uncorrected_blocks,
"lock", G_TYPE_BOOLEAN, status & FE_HAS_LOCK, NULL);
message = gst_message_new_element (GST_OBJECT (src), structure);
gst_element_post_message (GST_ELEMENT (src), message);
}
static gboolean
gst_dvbsrc_frontend_status (GstDvbSrc * object)
{
fe_status_t status = 0;
gint i;
GST_INFO_OBJECT (object, "gst_dvbsrc_frontend_status\n");
if (object->fd_frontend < 0) {
GST_ERROR_OBJECT (object,
"Trying to get frontend status from not opened device!");
return FALSE;
} else
GST_INFO_OBJECT (object, "fd-frontend: %d", object->fd_frontend);
for (i = 0; i < 15; i++) {
usleep (1000000);
GST_INFO_OBJECT (object, ".");
if (ioctl (object->fd_frontend, FE_READ_STATUS, &status) == -1) {
GST_ERROR_OBJECT (object, "Failed reading frontend status.");
return FALSE;
}
gst_dvbsrc_output_frontend_stats (object);
if (status & FE_HAS_LOCK) {
break;
}
}
if (!(status & FE_HAS_LOCK)) {
GST_INFO_OBJECT (object,
"Not able to lock to the signal on the given frequency.\n");
return FALSE;
} else
return TRUE;
}
struct diseqc_cmd
{
struct dvb_diseqc_master_cmd cmd;
uint32_t wait;
};
static void
diseqc_send_msg (int fd, fe_sec_voltage_t v, struct diseqc_cmd *cmd,
fe_sec_tone_mode_t t, fe_sec_mini_cmd_t b)
{
if (ioctl (fd, FE_SET_TONE, SEC_TONE_OFF) == -1) {
GST_ERROR ("Setting tone to off failed");
return;
}
if (ioctl (fd, FE_SET_VOLTAGE, v) == -1) {
GST_ERROR ("Setting voltage failed");
return;
}
usleep (15 * 1000);
GST_LOG ("diseqc: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", cmd->cmd.msg[0],
cmd->cmd.msg[1], cmd->cmd.msg[2], cmd->cmd.msg[3], cmd->cmd.msg[4],
cmd->cmd.msg[5]);
if (ioctl (fd, FE_DISEQC_SEND_MASTER_CMD, &cmd->cmd) == -1) {
GST_ERROR ("Sending diseqc command failed");
return;
}
usleep (cmd->wait * 1000);
usleep (15 * 1000);
if (ioctl (fd, FE_DISEQC_SEND_BURST, b) == -1) {
GST_ERROR ("Sending burst failed");
return;
}
usleep (15 * 1000);
if (ioctl (fd, FE_SET_TONE, t) == -1) {
GST_ERROR ("Setting tone failed");
return;
}
}
/* digital satellite equipment control,
* specification is available from http://www.eutelsat.com/
*/
static void
diseqc (int secfd, int sat_no, int voltage, int tone)
{
struct diseqc_cmd cmd = { {{0xe0, 0x10, 0x38, 0xf0, 0x00, 0x00}, 4}, 0 };
/* param: high nibble: reset bits, low nibble set bits,
* bits are: option, position, polarizaion, band
*/
cmd.cmd.msg[3] =
0xf0 | (((sat_no * 4) & 0x0f) | (tone == SEC_TONE_ON ? 1 : 0) |
(voltage == SEC_VOLTAGE_13 ? 0 : 2));
/* send twice because some diseqc switches do not respond correctly the
* first time */
diseqc_send_msg (secfd, voltage, &cmd, tone,
sat_no % 2 ? SEC_MINI_B : SEC_MINI_A);
diseqc_send_msg (secfd, voltage, &cmd, tone,
sat_no % 2 ? SEC_MINI_B : SEC_MINI_A);
}
static gboolean
gst_dvbsrc_tune (GstDvbSrc * object)
{
#if DVB_API_VERSION == 3 && DVB_API_VERSION_MINOR == 3
struct dvbfe_params feparams;
#else
struct dvb_frontend_parameters feparams;
#endif
fe_sec_voltage_t voltage;
fe_status_t status;
int i;
int j;
unsigned int freq = object->freq;
unsigned int sym_rate = object->sym_rate * 1000;
/* found in mail archive on linuxtv.org
* What works well for us is:
* - first establish a TS feed (i.e. tune the frontend and check for success)
* - then set filters (PES/sections)
* - then tell the MPEG decoder to start
* - before tuning: first stop the MPEG decoder, then stop all filters
*/
GST_INFO_OBJECT (object, "gst_dvbsrc_tune");
if (object->fd_frontend < 0) {
/* frontend not opened yet, tune later */
GST_INFO_OBJECT (object, "Frontend not open: tuning later");
return FALSE;
}
gst_dvbsrc_unset_pes_filters (object);
for (j = 0; j < 5; j++) {
switch (object->adapter_type) {
case FE_QPSK:
object->tone = SEC_TONE_OFF;
if (freq > 2200000) {
// this must be an absolute frequency
if (freq < SLOF) {
feparams.frequency = (freq - LOF1);
} else {
feparams.frequency = (freq - LOF2);
object->tone = SEC_TONE_ON;
}
} else {
// this is an L-Band frequency
feparams.frequency = freq;
}
feparams.inversion = INVERSION_AUTO;
GST_DEBUG_OBJECT (object, "api version %d.%d", DVB_API_VERSION,
DVB_API_VERSION_MINOR);
#if DVB_API_VERSION == 3 && DVB_API_VERSION_MINOR == 3
GST_DEBUG_OBJECT (object, "using multiproto driver");
feparams.delsys.dvbs.symbol_rate = sym_rate;
feparams.delsys.dvbs.fec = object->code_rate_hp;
#else
feparams.u.qpsk.symbol_rate = sym_rate;
feparams.u.qpsk.fec_inner = object->code_rate_hp;
#endif
GST_INFO_OBJECT (object,
"tuning DVB-S to L-Band:%u, Pol:%d, srate=%u, 22kHz=%s",
feparams.frequency, object->pol, sym_rate,
object->tone == SEC_TONE_ON ? "on" : "off");
if (object->pol == DVB_POL_H)
voltage = SEC_VOLTAGE_18;
else
voltage = SEC_VOLTAGE_13;
if (object->diseqc_src == -1 || object->send_diseqc == FALSE) {
if (ioctl (object->fd_frontend, FE_SET_VOLTAGE, voltage) < 0) {
g_warning ("Unable to set voltage on dvb frontend device");
}
if (ioctl (object->fd_frontend, FE_SET_TONE, object->tone) < 0) {
g_warning ("Error setting tone: %s", strerror (errno));
}
} else {
GST_DEBUG_OBJECT (object, "Sending DISEqC");
diseqc (object->fd_frontend, object->diseqc_src, voltage,
object->tone);
/* Once diseqc source is set, do not set it again until
* app decides to change it */
//object->send_diseqc = FALSE;
}
break;
case FE_OFDM:
feparams.frequency = freq;
#if DVB_API_VERSION == 3 && DVB_API_VERSION_MINOR == 3
#else
feparams.u.ofdm.bandwidth = object->bandwidth;
feparams.u.ofdm.code_rate_HP = object->code_rate_hp;
feparams.u.ofdm.code_rate_LP = object->code_rate_lp;
feparams.u.ofdm.constellation = object->modulation;
feparams.u.ofdm.transmission_mode = object->transmission_mode;
feparams.u.ofdm.guard_interval = object->guard_interval;
feparams.u.ofdm.hierarchy_information = object->hierarchy_information;
#endif
feparams.inversion = object->inversion;
GST_INFO_OBJECT (object, "tuning DVB-T to %d Hz\n", freq);
break;
case FE_QAM:
GST_INFO_OBJECT (object, "Tuning DVB-C to %d, srate=%d", freq,
sym_rate);
feparams.frequency = freq;
feparams.inversion = object->inversion;
feparams.u.qam.fec_inner = object->code_rate_hp;
feparams.u.qam.modulation = object->modulation;
feparams.u.qam.symbol_rate = sym_rate;
break;
case FE_ATSC:
GST_INFO_OBJECT (object, "Tuning ATSC to %d", freq);
feparams.frequency = freq;
feparams.u.vsb.modulation = object->modulation;
break;
default:
g_error ("Unknown frontend type: %d", object->adapter_type);
}
usleep (100000);
/* now tune the frontend */
#if DVB_API_VERSION == 3 && DVB_API_VERSION_MINOR == 3
if (ioctl (object->fd_frontend, DVBFE_SET_PARAMS, &feparams) < 0) {
#else
if (ioctl (object->fd_frontend, FE_SET_FRONTEND, &feparams) < 0) {
#endif
g_warning ("Error tuning channel: %s", strerror (errno));
}
for (i = 0; i < 5; i++) {
usleep (100000);
if (ioctl (object->fd_frontend, FE_READ_STATUS, &status) == -1) {
perror ("FE_READ_STATUS");
break;
}
GST_LOG_OBJECT (object, "status == 0x%02x", status);
}
if (status & FE_HAS_LOCK)
break;
}
if (!(status & FE_HAS_LOCK))
return FALSE;
/* set pid filters */
gst_dvbsrc_set_pes_filters (object);
return TRUE;
}
static void
gst_dvbsrc_unset_pes_filters (GstDvbSrc * object)
{
int i = 0;
GST_INFO_OBJECT (object, "clearing PES filter");
for (i = 0; i < MAX_FILTERS; i++) {
if (object->fd_filters[i] == -1)
continue;
close (object->fd_filters[i]);
object->fd_filters[i] = -1;
}
}
static void
gst_dvbsrc_set_pes_filters (GstDvbSrc * object)
{
int *fd;
int pid, i;
struct dmx_pes_filter_params pes_filter;
gchar *demux_dev = g_strdup_printf ("/dev/dvb/adapter%d/demux%d",
object->adapter_number, object->frontend_number);
GST_INFO_OBJECT (object, "Setting PES filter");
for (i = 0; i < MAX_FILTERS; i++) {
if (object->pids[i] == G_MAXUINT16)
break;
fd = &object->fd_filters[i];
pid = object->pids[i];
close (*fd);
if ((*fd = open (demux_dev, O_RDWR)) < 0) {
g_error ("Error opening demuxer: %s (%s)", strerror (errno), demux_dev);
g_free (demux_dev);
}
g_return_if_fail (*fd != -1);
pes_filter.pid = pid;
pes_filter.input = DMX_IN_FRONTEND;
pes_filter.output = DMX_OUT_TS_TAP;
pes_filter.pes_type = DMX_PES_OTHER;
pes_filter.flags = DMX_IMMEDIATE_START;
GST_INFO_OBJECT (object, "Setting pes-filter, pid = %d, type = %d",
pes_filter.pid, pes_filter.pes_type);
if (ioctl (*fd, DMX_SET_PES_FILTER, &pes_filter) < 0)
GST_WARNING_OBJECT (object, "Error setting PES filter on %s: %s",
demux_dev, strerror (errno));
}
g_free (demux_dev);
}
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