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gstreamer/sys/dvb/gstdvbsrc.c

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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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, 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=8 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 <gst/glib-compat-private.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "_stdint.h"
#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)
#define NUM_DTV_PROPS 16
/* 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,
ARG_DVBSRC_TIMEOUT,
ARG_DVBSRC_DVB_BUFFER_SIZE,
ARG_DVBSRC_DELSYS,
ARG_DVBSRC_PILOT,
ARG_DVBSRC_ROLLOFF,
ARG_DVBSRC_STREAM_ID
};
#define DEFAULT_ADAPTER 0
#define DEFAULT_FRONTEND 0
#define DEFAULT_DISEQC_SRC -1 /* disabled */
#define DEFAULT_FREQUENCY 0
#define DEFAULT_POLARITY "H"
#define DEFAULT_PIDS "8192"
#define DEFAULT_SYMBOL_RATE 0
#define DEFAULT_BANDWIDTH BANDWIDTH_7_MHZ
#define DEFAULT_CODE_RATE_HP FEC_AUTO
#define DEFAULT_CODE_RATE_LP FEC_1_2
#define DEFAULT_GUARD GUARD_INTERVAL_1_16
#define DEFAULT_MODULATION QAM_16
#define DEFAULT_TRANSMISSION_MODE TRANSMISSION_MODE_8K
#define DEFAULT_HIERARCHY HIERARCHY_1
#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 */
#define DEFAULT_DELSYS SYS_UNDEFINED
#define DEFAULT_PILOT PILOT_AUTO
#define DEFAULT_ROLLOFF ROLLOFF_AUTO
#define DEFAULT_STREAM_ID NO_STREAM_ID_FILTER
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", "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"},
{PSK_8, "8PSK", "8psk"},
{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;
}
#define GST_TYPE_DVBSRC_DELSYS (gst_dvbsrc_delsys_get_type ())
static GType
gst_dvbsrc_delsys_get_type (void)
{
static GType dvbsrc_delsys_type = 0;
static GEnumValue delsys_types[] = {
{SYS_UNDEFINED, "UNDEFINED", "undefined"},
{SYS_DVBC_ANNEX_A, "DVB-C-A", "dvb-c-a"},
{SYS_DVBC_ANNEX_B, "DVB-C-B", "dvb-c-b"},
{SYS_DVBT, "DVB-T", "dvb-t"},
{SYS_DSS, "DSS", "dss"},
{SYS_DVBS, "DVB-S", "dvb-s"},
{SYS_DVBS2, "DVB-S2", "dvb-s2"},
{SYS_DVBH, "DVB-H", "dvb-h"},
{SYS_ISDBT, "ISDB-T", "isdb-t"},
{SYS_ISDBS, "ISDB-S", "isdb-s"},
{SYS_ISDBC, "ISDB-C", "isdb-c"},
{SYS_ATSC, "ATSC", "atsc"},
{SYS_ATSCMH, "ATSC-MH", "atsc-mh"},
{SYS_DTMB, "DTMB", "dtmb"},
{SYS_CMMB, "CMMB", "cmmb"},
{SYS_DAB, "DAB", "dab"},
{SYS_DVBT2, "DVB-T2", "dvb-t2"},
{SYS_TURBO, "TURBO", "turbo"},
{SYS_DVBC_ANNEX_C, "DVB-C-C", "dvb-c-c"},
{0, NULL, NULL},
};
if (!dvbsrc_delsys_type) {
dvbsrc_delsys_type =
g_enum_register_static ("GstDvbSrcDelsys", delsys_types);
}
return dvbsrc_delsys_type;
}
#define GST_TYPE_DVBSRC_PILOT (gst_dvbsrc_pilot_get_type ())
static GType
gst_dvbsrc_pilot_get_type (void)
{
static GType dvbsrc_pilot_type = 0;
static GEnumValue pilot_types[] = {
{PILOT_ON, "ON", "on"},
{PILOT_OFF, "OFF", "off"},
{PILOT_AUTO, "AUTO", "auto"},
{0, NULL, NULL},
};
if (!dvbsrc_pilot_type) {
dvbsrc_pilot_type = g_enum_register_static ("GstDvbSrcPilot", pilot_types);
}
return dvbsrc_pilot_type;
}
#define GST_TYPE_DVBSRC_ROLLOFF (gst_dvbsrc_rolloff_get_type ())
static GType
gst_dvbsrc_rolloff_get_type (void)
{
static GType dvbsrc_rolloff_type = 0;
static GEnumValue rolloff_types[] = {
{ROLLOFF_35, "35", "35"},
{ROLLOFF_20, "20", "20"},
{ROLLOFF_25, "25", "25"},
{ROLLOFF_AUTO, "auto", "auto"},
{0, NULL, NULL},
};
if (!dvbsrc_rolloff_type) {
dvbsrc_rolloff_type =
g_enum_register_static ("GstDvbSrcRolloff", rolloff_types);
}
return dvbsrc_rolloff_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_unlock_stop (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 *
* *
* *
******************************
*/
#define gst_dvbsrc_parent_class parent_class
G_DEFINE_TYPE (GstDvbSrc, gst_dvbsrc, GST_TYPE_PUSH_SRC);
/* 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);
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&ts_src_factory));
gst_element_class_set_static_metadata (gstelement_class, "DVB Source",
"Source/Video",
"Digital Video Broadcast Source",
"P2P-VCR, C-Lab, University of Paderborn,"
"Zaheer Abbas Merali <zaheerabbas at merali dot org>");
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->unlock_stop = GST_DEBUG_FUNCPTR (gst_dvbsrc_unlock_stop);
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_DEBUG_FUNCPTR (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, DEFAULT_ADAPTER, 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, DEFAULT_FRONTEND, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_FREQUENCY,
g_param_spec_uint ("frequency", "frequency", "Frequency",
0, G_MAXUINT, DEFAULT_FREQUENCY, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_POLARITY,
g_param_spec_string ("polarity", "polarity",
"Polarity [vhHV] (DVB-S, DVB-S2)", DEFAULT_POLARITY,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
g_object_class_install_property (gobject_class, ARG_DVBSRC_PIDS,
g_param_spec_string ("pids", "pids",
"Colon seperated list of pids (eg. 110:120)",
DEFAULT_PIDS, G_PARAM_WRITABLE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_SYM_RATE,
g_param_spec_uint ("symbol-rate",
"symbol rate",
"Symbol Rate (DVB-S, DVB-S2, DVB-C)",
0, G_MAXUINT, 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, DVB-S2)",
-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, DEFAULT_BANDWIDTH,
G_PARAM_READWRITE));
/* FIXME: DVB-C, DVB-S, DVB-S2 named it as innerFEC */
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, DVB-S2 and DVB-C)",
GST_TYPE_DVBSRC_CODE_RATE, DEFAULT_CODE_RATE_HP, 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, DEFAULT_CODE_RATE_LP, G_PARAM_READWRITE));
/* FIXME: should the property be called 'guard-interval' then? */
g_object_class_install_property (gobject_class, ARG_DVBSRC_GUARD,
g_param_spec_enum ("guard",
"guard",
"Guard Interval (DVB-T)",
GST_TYPE_DVBSRC_GUARD, DEFAULT_GUARD, 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, DEFAULT_MODULATION, G_PARAM_READWRITE));
/* FIXME: property should be named 'transmission-mode' */
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,
DEFAULT_TRANSMISSION_MODE, 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, DEFAULT_HIERARCHY, 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, DEFAULT_INVERSION, 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, DEFAULT_STATS_REPORTING_INTERVAL, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_TIMEOUT,
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));
g_object_class_install_property (gobject_class, ARG_DVBSRC_DELSYS,
g_param_spec_enum ("delsys", "delsys", "Delivery System",
GST_TYPE_DVBSRC_DELSYS, DEFAULT_DELSYS, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_PILOT,
g_param_spec_enum ("pilot", "pilot", "Pilot (DVB-S2)",
GST_TYPE_DVBSRC_PILOT, DEFAULT_PILOT, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_ROLLOFF,
g_param_spec_enum ("rolloff", "rolloff", "Rolloff (DVB-S2)",
GST_TYPE_DVBSRC_ROLLOFF, DEFAULT_ROLLOFF, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DVBSRC_STREAM_ID,
g_param_spec_int ("stream-id", "stream-id",
"Stream ID (-1 disabled, DVB-T2 and DVB-S2 max 255, ISDB max 65535)",
-1, 65535, DEFAULT_STREAM_ID, 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)
{
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);
/* And we wanted timestamped output */
gst_base_src_set_do_timestamp (GST_BASE_SRC (object), TRUE);
gst_base_src_set_format (GST_BASE_SRC (object), GST_FORMAT_TIME);
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->dvb_buffer_size = DEFAULT_DVB_BUFFER_SIZE;
object->adapter_number = DEFAULT_ADAPTER;
object->frontend_number = DEFAULT_FRONTEND;
object->diseqc_src = DEFAULT_DISEQC_SRC;
object->send_diseqc = (DEFAULT_DISEQC_SRC != -1);
/* object->pol = DVB_POL_H; *//* set via G_PARAM_CONSTRUCT */
object->sym_rate = DEFAULT_SYMBOL_RATE;
object->bandwidth = DEFAULT_BANDWIDTH;
object->code_rate_hp = DEFAULT_CODE_RATE_HP;
object->code_rate_lp = DEFAULT_CODE_RATE_LP;
object->guard_interval = DEFAULT_GUARD;
object->modulation = DEFAULT_MODULATION;
object->transmission_mode = DEFAULT_TRANSMISSION_MODE;
object->hierarchy_information = DEFAULT_HIERARCHY;
object->inversion = DEFAULT_INVERSION;
object->stats_interval = DEFAULT_STATS_REPORTING_INTERVAL;
object->delsys = DEFAULT_DELSYS;
object->pilot = DEFAULT_PILOT;
object->rolloff = DEFAULT_ROLLOFF;
object->stream_id = DEFAULT_STREAM_ID;
g_mutex_init (&object->tune_mutex);
object->timeout = DEFAULT_TIMEOUT;
}
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_uint (value);
GST_INFO_OBJECT (object, "Set Property: ARG_DVBSRC_FREQUENCY (%d Hz)",
object->freq);
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");
GST_INFO_OBJECT (object, "\t%s", (s[0] == 'h'
|| s[0] == 'H') ? "DVB_POL_H" : "DVB_POL_V");
}
break;
}
case ARG_DVBSRC_PIDS:
{
gchar *pid_string;
pid_string = g_value_dup_string (value);
GST_INFO_OBJECT (object, "Set Property: ARG_DVBSRC_PIDS %s", pid_string);
if (!strcmp (pid_string, "8192")) {
/* get the whole ts */
int pid_count = 1;
object->pids[0] = 8192;
while (pid_count < MAX_FILTERS) {
object->pids[pid_count++] = G_MAXUINT16;
}
} 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, "\tParsed Pid: %d", pid);
object->pids[pid_count] = pid;
pid_count++;
}
pids++;
}
while (pid_count < MAX_FILTERS) {
object->pids[pid_count++] = G_MAXUINT16;
}
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_uint (value);
GST_INFO_OBJECT (object, "Set Property: ARG_DVBSRC_SYM_RATE to value %d",
object->sym_rate);
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_STATE (object) > 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;
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;
case ARG_DVBSRC_DELSYS:
object->delsys = g_value_get_enum (value);
break;
case ARG_DVBSRC_PILOT:
object->pilot = g_value_get_enum (value);
break;
case ARG_DVBSRC_ROLLOFF:
object->rolloff = g_value_get_enum (value);
break;
case ARG_DVBSRC_STREAM_ID:
object->stream_id = g_value_get_int (value);
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_uint (value, object->freq);
break;
case ARG_DVBSRC_POLARITY:
if (object->pol == DVB_POL_H)
g_value_set_static_string (value, "H");
else
g_value_set_static_string (value, "V");
break;
case ARG_DVBSRC_SYM_RATE:
g_value_set_uint (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;
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;
case ARG_DVBSRC_DELSYS:
g_value_set_enum (value, object->delsys);
break;
case ARG_DVBSRC_PILOT:
g_value_set_enum (value, object->pilot);
break;
case ARG_DVBSRC_ROLLOFF:
g_value_set_enum (value, object->rolloff);
break;
case ARG_DVBSRC_STREAM_ID:
g_value_set_int (value, object->stream_id);
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_check_delsys (struct dtv_property *prop, guchar delsys)
{
int i;
for (i = 0; i < prop->u.buffer.len; i++) {
if (prop->u.buffer.data[i] == delsys)
return TRUE;
}
return FALSE;
}
static gboolean
gst_dvbsrc_open_frontend (GstDvbSrc * object, gboolean writable)
{
struct dvb_frontend_info fe_info;
struct dtv_properties props;
struct dtv_property dvb_prop[1];
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, writable ? O_RDWR : O_RDONLY)) < 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;
}
GST_DEBUG_OBJECT (object, "Device opened, querying information");
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;
}
GST_DEBUG_OBJECT (object, "check delivery systems");
dvb_prop[0].cmd = DTV_ENUM_DELSYS;
props.num = 1;
props.props = dvb_prop;
if (ioctl (object->fd_frontend, FE_GET_PROPERTY, &props) < 0) {
GST_ELEMENT_ERROR (object, RESOURCE, SETTINGS,
(_("Cannot enumerate delivery systems from frontend device \"%s\"."),
frontend_dev), GST_ERROR_SYSTEM);
close (object->fd_frontend);
g_free (frontend_dev);
return FALSE;
}
GST_DEBUG_OBJECT (object, "Got information about adapter : %s", fe_info.name);
adapter_name = g_strdup (fe_info.name);
adapter_structure = gst_structure_new ("dvb-adapter",
"name", G_TYPE_STRING, adapter_name,
/* Capability supported auto params */
"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);
/* Capability delivery systems */
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_DVBC_ANNEX_A))
gst_structure_set (adapter_structure, "dvb-c-a", G_TYPE_STRING,
"DVB-C ANNEX A", NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_DVBC_ANNEX_B))
gst_structure_set (adapter_structure, "dvb-c-b", G_TYPE_STRING,
"DVB-C ANNEX C", NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_DVBT))
gst_structure_set (adapter_structure, "dvb-t", G_TYPE_STRING, "DVB-T",
NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_DSS))
gst_structure_set (adapter_structure, "dss", G_TYPE_STRING, "DSS", NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_DVBS))
gst_structure_set (adapter_structure, "dvb-s", G_TYPE_STRING, "DVB-S",
NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_DVBS2))
gst_structure_set (adapter_structure, "dvb-s2", G_TYPE_STRING, "DVB-S2",
NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_DVBH))
gst_structure_set (adapter_structure, "dvb-h", G_TYPE_STRING, "DVB-H",
NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_ISDBT))
gst_structure_set (adapter_structure, "isdb-t", G_TYPE_STRING, "ISDB-T",
NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_ISDBS))
gst_structure_set (adapter_structure, "isdb-s", G_TYPE_STRING, "ISDB-S",
NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_ISDBC))
gst_structure_set (adapter_structure, "isdb-c", G_TYPE_STRING, "ISDB-C",
NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_ATSC))
gst_structure_set (adapter_structure, "atsc", G_TYPE_STRING, "ATSC", NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_ATSCMH))
gst_structure_set (adapter_structure, "atsc-mh", G_TYPE_STRING, "ATSC-MH",
NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_DTMB))
gst_structure_set (adapter_structure, "dtmb", G_TYPE_STRING, "DTMB", NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_CMMB))
gst_structure_set (adapter_structure, "cmmb", G_TYPE_STRING, "CMMB", NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_DAB))
gst_structure_set (adapter_structure, "dab", G_TYPE_STRING, "DAB", NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_DVBT2))
gst_structure_set (adapter_structure, "dvb-t2", G_TYPE_STRING, "DVB-T2",
NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_TURBO))
gst_structure_set (adapter_structure, "turbo", G_TYPE_STRING, "TURBO",
NULL);
if (gst_dvbsrc_check_delsys (&dvb_prop[0], SYS_DVBC_ANNEX_C))
gst_structure_set (adapter_structure, "dvb-c-c", G_TYPE_STRING,
"DVB-C ANNEX C", 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 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;
}
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_clear (&object->tune_mutex);
if (G_OBJECT_CLASS (parent_class)->finalize)
G_OBJECT_CLASS (parent_class)->finalize (_object);
}
/*
******************************
* *
* Plugin Realization *
* *
******************************
*/
/* 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");
return gst_element_register (plugin, "dvbsrc", GST_RANK_NONE,
GST_TYPE_DVBSRC);
}
static GstFlowReturn
gst_dvbsrc_read_device (GstDvbSrc * object, int size, GstBuffer ** buffer)
{
gint count = 0;
gint ret_val = 0;
GstBuffer *buf = gst_buffer_new_and_alloc (size);
GstClockTime timeout = object->timeout * GST_USECOND;
GstMapInfo map;
g_return_val_if_fail (GST_IS_BUFFER (buf), GST_FLOW_ERROR);
if (object->fd_dvr < 0)
return GST_FLOW_ERROR;
gst_buffer_map (buf, &map, GST_MAP_WRITE);
while (count < size) {
ret_val = gst_poll_wait (object->poll, timeout);
GST_LOG_OBJECT (object, "select returned %d", ret_val);
if (G_UNLIKELY (ret_val < 0)) {
if (errno == EBUSY)
goto stopped;
else if (errno == EINTR)
continue;
else
goto select_error;
} else if (G_UNLIKELY (ret_val == 0)) {
/* timeout, post element message */
gst_element_post_message (GST_ELEMENT_CAST (object),
gst_message_new_element (GST_OBJECT (object),
gst_structure_new_empty ("dvb-read-failure")));
} else {
int nread = read (object->fd_dvr, map.data + count, size - count);
if (G_UNLIKELY (nread < 0)) {
GST_WARNING_OBJECT
(object,
"Unable to read from device: /dev/dvb/adapter%d/dvr%d (%d)",
object->adapter_number, object->frontend_number, errno);
gst_element_post_message (GST_ELEMENT_CAST (object),
gst_message_new_element (GST_OBJECT (object),
gst_structure_new_empty ("dvb-read-failure")));
} else
count = count + nread;
}
}
gst_buffer_unmap (buf, &map);
gst_buffer_resize (buf, 0, count);
*buffer = buf;
return GST_FLOW_OK;
stopped:
{
GST_DEBUG_OBJECT (object, "stop called");
gst_buffer_unmap (buf, &map);
gst_buffer_unref (buf);
return GST_FLOW_FLUSHING;
}
select_error:
{
GST_ELEMENT_ERROR (object, RESOURCE, READ, (NULL),
("select error %d: %s (%d)", ret_val, g_strerror (errno), errno));
gst_buffer_unmap (buf, &map);
gst_buffer_unref (buf);
return GST_FLOW_ERROR;
}
}
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");
retval = gst_dvbsrc_read_device (object, buffer_size, buf);
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, FALSE);
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, TRUE);
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;
}
if (!(src->poll = gst_poll_new (TRUE))) {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ_WRITE, (NULL),
("could not create an fdset: %s (%d)", g_strerror (errno), errno));
/* unset filters also */
gst_dvbsrc_unset_pes_filters (src);
close (src->fd_frontend);
return FALSE;
} else {
gst_poll_fd_init (&src->poll_fd_dvr);
src->poll_fd_dvr.fd = src->fd_dvr;
gst_poll_add_fd (src->poll, &src->poll_fd_dvr);
gst_poll_fd_ctl_read (src->poll, &src->poll_fd_dvr, TRUE);
}
return TRUE;
}
static gboolean
gst_dvbsrc_stop (GstBaseSrc * bsrc)
{
GstDvbSrc *src = GST_DVBSRC (bsrc);
gst_dvbsrc_close_devices (src);
if (src->poll) {
gst_poll_free (src->poll);
src->poll = NULL;
}
return TRUE;
}
static gboolean
gst_dvbsrc_unlock (GstBaseSrc * bsrc)
{
GstDvbSrc *src = GST_DVBSRC (bsrc);
gst_poll_set_flushing (src->poll, TRUE);
return TRUE;
}
static gboolean
gst_dvbsrc_unlock_stop (GstBaseSrc * bsrc)
{
GstDvbSrc *src = GST_DVBSRC (bsrc);
gst_poll_set_flushing (src->poll, FALSE);
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");
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++) {
g_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.");
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;
}
g_usleep (15 * 1000);
GST_LOG ("diseqc: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x", 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;
}
g_usleep (cmd->wait * 1000);
g_usleep (15 * 1000);
if (ioctl (fd, FE_DISEQC_SEND_BURST, b) == -1) {
GST_ERROR ("Sending burst failed");
return;
}
g_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);
}
inline static void
set_prop (struct dtv_property *props, int *n, guint32 cmd, guint32 data)
{
if (*n == NUM_DTV_PROPS) {
g_critical ("Index out of bounds");
} else {
props[*n].cmd = cmd;
props[(*n)++].u.data = data;
}
}
static gboolean
gst_dvbsrc_tune (GstDvbSrc * object)
{
struct dtv_properties props;
struct dtv_property dvb_prop[NUM_DTV_PROPS];
fe_sec_voltage_t voltage;
fe_status_t status;
int n;
int i;
int j;
unsigned int freq = object->freq;
unsigned int sym_rate = object->sym_rate * 1000;
unsigned int bandwidth;
int inversion = object->inversion;
/* 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_DEBUG_OBJECT (object, "api version %d.%d", DVB_API_VERSION,
DVB_API_VERSION_MINOR);
GST_DEBUG_OBJECT (object, "check delivery systems");
dvb_prop[0].cmd = DTV_ENUM_DELSYS;
props.num = 1;
props.props = dvb_prop;
if (ioctl (object->fd_frontend, FE_GET_PROPERTY, &props) < 0) {
g_warning ("Error enumarating delsys: %s", strerror (errno));
return FALSE;
}
if (!gst_dvbsrc_check_delsys (&dvb_prop[0], object->delsys))
return FALSE;
gst_dvbsrc_unset_pes_filters (object);
for (j = 0; j < 5; j++) {
memset (dvb_prop, 0, sizeof (dvb_prop));
dvb_prop[0].cmd = DTV_CLEAR;
props.num = 1;
props.props = dvb_prop;
if (ioctl (object->fd_frontend, FE_SET_PROPERTY, &props) < 0) {
g_warning ("Error resetting tuner: %s", strerror (errno));
}
/* First three entries are reserved */
n = 3;
switch (object->delsys) {
case SYS_DVBS:
case SYS_DVBS2:
case SYS_TURBO:
object->tone = SEC_TONE_OFF;
if (freq > 2200000) {
// this must be an absolute frequency
if (freq < SLOF) {
freq -= LOF1;
} else {
freq -= LOF2;
object->tone = SEC_TONE_ON;
}
}
inversion = INVERSION_AUTO;
set_prop (dvb_prop, &n, DTV_SYMBOL_RATE, sym_rate);
set_prop (dvb_prop, &n, DTV_INNER_FEC, object->code_rate_hp);
GST_INFO_OBJECT (object,
"Tuning DVB-S/DVB-S2/Turbo to L-Band:%u, Pol:%d, srate=%u, 22kHz=%s",
freq, 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) {
set_prop (dvb_prop, &n, DTV_VOLTAGE, voltage);
// DTV_TONE not yet implemented
// set_prop (fe_props_array, &n, DTV_TONE, object->tone)
} 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;
}
if ((object->delsys == SYS_DVBS2) || (object->delsys == SYS_TURBO))
set_prop (dvb_prop, &n, DTV_MODULATION, object->modulation);
if (object->delsys == SYS_DVBS2) {
set_prop (dvb_prop, &n, DTV_PILOT, object->pilot);
set_prop (dvb_prop, &n, DTV_ROLLOFF, object->rolloff);
set_prop (dvb_prop, &n, DTV_STREAM_ID, object->stream_id);
}
break;
case SYS_DVBT:
case SYS_DVBT2:
bandwidth = 0;
if (object->bandwidth != BANDWIDTH_AUTO) {
/* Presumably not specifying bandwidth with s2api is equivalent
* to BANDWIDTH_AUTO.
*/
switch (object->bandwidth) {
case BANDWIDTH_8_MHZ:
bandwidth = 8000000;
break;
case BANDWIDTH_7_MHZ:
bandwidth = 7000000;
break;
case BANDWIDTH_6_MHZ:
bandwidth = 6000000;
break;
default:
break;
}
}
if (bandwidth) {
set_prop (dvb_prop, &n, DTV_BANDWIDTH_HZ, bandwidth);
}
set_prop (dvb_prop, &n, DTV_CODE_RATE_HP, object->code_rate_hp);
set_prop (dvb_prop, &n, DTV_CODE_RATE_LP, object->code_rate_lp);
set_prop (dvb_prop, &n, DTV_MODULATION, object->modulation);
set_prop (dvb_prop, &n, DTV_TRANSMISSION_MODE,
object->transmission_mode);
set_prop (dvb_prop, &n, DTV_GUARD_INTERVAL, object->guard_interval);
set_prop (dvb_prop, &n, DTV_HIERARCHY, object->hierarchy_information);
if (object->delsys == SYS_DVBT2) {
set_prop (dvb_prop, &n, DTV_STREAM_ID, object->stream_id);
}
GST_INFO_OBJECT (object, "Tuning DVB-T/DVB_T2 to %d Hz", freq);
break;
case SYS_DVBC_ANNEX_A:
case SYS_DVBC_ANNEX_B:
case SYS_DVBC_ANNEX_C:
GST_INFO_OBJECT (object, "Tuning DVB-C/ClearCable to %d, srate=%d",
freq, sym_rate);
set_prop (dvb_prop, &n, DTV_MODULATION, object->modulation);
if (object->delsys != SYS_DVBC_ANNEX_B) {
set_prop (dvb_prop, &n, DTV_INNER_FEC, object->code_rate_hp);
set_prop (dvb_prop, &n, DTV_SYMBOL_RATE, sym_rate);
}
break;
case SYS_ATSC:
GST_INFO_OBJECT (object, "Tuning ATSC to %d", freq);
set_prop (dvb_prop, &n, DTV_MODULATION, object->modulation);
break;
default:
g_error ("Unknown frontend type: %d", object->delsys);
return FALSE;
}
g_usleep (100000);
/* now tune the frontend */
set_prop (dvb_prop, &n, DTV_TUNE, 0);
props.num = n;
props.props = dvb_prop;
/* set first three entries */
n = 0;
set_prop (dvb_prop, &n, DTV_DELIVERY_SYSTEM, object->delsys);
set_prop (dvb_prop, &n, DTV_FREQUENCY, freq);
set_prop (dvb_prop, &n, DTV_INVERSION, inversion);
GST_DEBUG_OBJECT (object, "Setting %d properties", props.num);
if (ioctl (object->fd_frontend, FE_SET_PROPERTY, &props) < 0) {
g_warning ("Error tuning channel: %s", strerror (errno));
}
for (i = 0; i < 50; i++) {
g_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)
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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