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vlc/modules/access/dtv/access.c

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/**
* @file access.c
* @brief Digital broadcasting input module for VLC media player
*/
/*****************************************************************************
* Copyright © 2011 Rémi Denis-Courmont
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <vlc_common.h>
#include <vlc_access.h>
#include <vlc_plugin.h>
#include <vlc_dialog.h>
#ifdef HAVE_SEARCH_H
#include <search.h>
#endif
#include "dtv.h"
#define ADAPTER_TEXT N_("DVB adapter")
#define ADAPTER_LONGTEXT N_( \
"If there is more than one digital broadcasting adapter, " \
"the adapter number must be selected. Numbering starts from zero.")
#define DEVICE_TEXT N_("DVB device")
#define DEVICE_LONGTEXT N_( \
"If the adapter provides multiple independent tuner devices, " \
"the device number must be selected. Numbering starts from zero.")
#define BUDGET_TEXT N_("Do not demultiplex")
#define BUDGET_LONGTEXT N_( \
"Only useful programs are normally demultiplexed from the transponder. " \
"This option will disable demultiplexing and receive all programs.")
#define NAME_TEXT N_("Network name")
#define NAME_LONGTEXT N_("Unique network name in the System Tuning Spaces")
#define CREATE_TEXT N_("Network name to create")
#define CREATE_LONGTEXT N_("Create unique name in the System Tuning Spaces")
#define FREQ_TEXT N_("Frequency (Hz)")
#define FREQ_LONGTEXT N_( \
"TV channels are grouped by transponder (a.k.a. multiplex) " \
"on a given frequency. This is required to tune the receiver.")
#define MODULATION_TEXT N_("Modulation / Constellation")
#define MODULATION_A_TEXT N_("Layer A modulation")
#define MODULATION_B_TEXT N_("Layer B modulation")
#define MODULATION_C_TEXT N_("Layer C modulation")
#define MODULATION_LONGTEXT N_( \
"The digital signal can be modulated according with different " \
"constellations (depending on the delivery system). " \
"If the demodulator cannot detect the constellation automatically, " \
"it needs to be configured manually.")
static const char *const modulation_vlc[] = { "",
"QAM", "16QAM", "32QAM", "64QAM", "128QAM", "256QAM",
"8VSB", "16VSB",
"QPSK", "DQPSK", "8PSK", "16APSK", "32APSK",
};
static const char *const modulation_user[] = { N_("Undefined"),
"Auto QAM", "16-QAM", "32-QAM", "64-QAM", "128-QAM", "256-QAM",
"8-VSB", "16-VSB",
"QPSK", "DQPSK", "8-PSK", "16-APSK", "32-APSK",
};
#define SRATE_TEXT N_("Symbol rate (bauds)")
#define SRATE_LONGTEXT N_( \
"The symbol rate must be specified manually for some systems, " \
"notably DVB-C, DVB-S and DVB-S2.")
#define INVERSION_TEXT N_("Spectrum inversion")
#define INVERSION_LONGTEXT N_( \
"If the demodulator cannot detect spectral inversion correctly, " \
"it needs to be configured manually.")
const int auto_off_on_vlc[] = { -1, 0, 1 };
static const char *const auto_off_on_user[] = { N_("Automatic"),
N_("Off"), N_("On") };
#define CODE_RATE_TEXT N_("FEC code rate")
#define CODE_RATE_HP_TEXT N_("High-priority code rate")
#define CODE_RATE_LP_TEXT N_("Low-priority code rate")
#define CODE_RATE_A_TEXT N_("Layer A code rate")
#define CODE_RATE_B_TEXT N_("Layer B code rate")
#define CODE_RATE_C_TEXT N_("Layer C code rate")
#define CODE_RATE_LONGTEXT N_( \
"The code rate for Forward Error Correction can be specified.")
static const char *const code_rate_vlc[] = { "",
"0", /*"1/4", "1/3",*/ "1/2", "3/5", "2/3", "3/4",
"4/5", "5/6", "6/7", "7/8", "8/9", "9/10",
};
static const char *const code_rate_user[] = { N_("Automatic"),
N_("None"), /*"1/4", "1/3",*/ "1/2", "3/5", "2/3", "3/4",
"4/5", "5/6", "6/7", "7/8", "8/9", "9/10",
};
#define TRANSMISSION_TEXT N_("Transmission mode")
const int transmission_vlc[] = { -1,
1, 2, 4, 8, 16, 32,
};
static const char *const transmission_user[] = { N_("Automatic"),
"1k", "2k", "4k", "8k", "16k", "32k",
};
#define BANDWIDTH_TEXT N_("Bandwidth (MHz)")
const int bandwidth_vlc[] = { 0,
10, 8, 7, 6, 5, 2
};
static const char *const bandwidth_user[] = { N_("Automatic"),
N_("10 MHz"), N_("8 MHz"), N_("7 MHz"), N_("6 MHz"),
N_("5 MHz"), N_("1.712 MHz"),
};
#define GUARD_TEXT N_("Guard interval")
const char *const guard_vlc[] = { "",
"1/128", "1/32", "1/16", "19/256", "1/8", "19/128", "1/4",
};
static const char *const guard_user[] = { N_("Automatic"),
"1/128", "1/32", "1/16", "19/256", "1/8", "19/128", "1/4",
};
#define HIERARCHY_TEXT N_("Hierarchy mode")
const int hierarchy_vlc[] = { -1,
0, 1, 2, 4,
};
static const char *const hierarchy_user[] = { N_("Automatic"),
N_("None"), "1", "2", "4",
};
#define PLP_ID_TEXT N_("DVB-T2 Physical Layer Pipe")
#define SEGMENT_COUNT_A_TEXT N_("Layer A segments count")
#define SEGMENT_COUNT_B_TEXT N_("Layer B segments count")
#define SEGMENT_COUNT_C_TEXT N_("Layer C segments count")
#define TIME_INTERLEAVING_A_TEXT N_("Layer A time interleaving")
#define TIME_INTERLEAVING_B_TEXT N_("Layer B time interleaving")
#define TIME_INTERLEAVING_C_TEXT N_("Layer C time interleaving")
#define STREAM_ID_TEXT N_("Stream identifier")
#define PILOT_TEXT N_("Pilot")
#define ROLLOFF_TEXT N_("Roll-off factor")
const int rolloff_vlc[] = { -1,
35, 20, 25,
};
static const char *const rolloff_user[] = { N_("Automatic"),
N_("0.35 (same as DVB-S)"), N_("0.20"), N_("0.25"),
};
#define TS_ID_TEXT N_("Transport stream ID")
#define POLARIZATION_TEXT N_("Polarization (Voltage)")
#define POLARIZATION_LONGTEXT N_( \
"To select the polarization of the transponder, a different voltage " \
"is normally applied to the low noise block-downconverter (LNB).")
static const char *const polarization_vlc[] = { "", "V", "H", "R", "L" };
static const char *const polarization_user[] = { N_("Unspecified (0V)"),
N_("Vertical (13V)"), N_("Horizontal (18V)"),
N_("Circular Right Hand (13V)"), N_("Circular Left Hand (18V)") };
#define HIGH_VOLTAGE_TEXT N_("High LNB voltage")
#define HIGH_VOLTAGE_LONGTEXT N_( \
"If the cables between the satellilte low noise block-downconverter and " \
"the receiver are long, higher voltage may be required.\n" \
"Not all receivers support this.")
#define LNB_LOW_TEXT N_("Local oscillator low frequency (kHz)")
#define LNB_HIGH_TEXT N_("Local oscillator high frequency (kHz)")
#define LNB_LONGTEXT N_( \
"The downconverter (LNB) will subtract the local oscillator frequency " \
"from the satellite transmission frequency. " \
"The intermediate frequency (IF) on the RF cable is the result.")
#define LNB_SWITCH_TEXT N_("Universal LNB switch frequency (kHz)")
#define LNB_SWITCH_LONGTEXT N_( \
"If the satellite transmission frequency exceeds the switch frequency, " \
"the oscillator high frequency will be used as reference. " \
"Furthermore the automatic continuous 22kHz tone will be sent.")
#define TONE_TEXT N_("Continuous 22kHz tone")
#define TONE_LONGTEXT N_( \
"A continuous tone at 22kHz can be sent on the cable. " \
"This normally selects the higher frequency band from a universal LNB.")
#define SATNO_TEXT N_("DiSEqC LNB number")
#define SATNO_LONGTEXT N_( \
"If the satellite receiver is connected to multiple " \
"low noise block-downconverters (LNB) through a DiSEqC 1.0 switch, " \
"the correct LNB can be selected (1 to 4). " \
"If there is no switch, this parameter should be 0.")
#ifdef HAVE_LINUX_DVB
static const int satno_vlc[] = { 0, 1, 2, 3, 4 };
static const char *const satno_user[] = { N_("Unspecified"),
"A/1", "B/2", "C/3", "D/4" };
#endif
#define UNCOMMITTED_TEXT N_("Uncommitted DiSEqC LNB number")
#define UNCOMMITTED_LONGTEXT N_( \
"If the satellite receiver is connected to multiple " \
"low noise block-downconverters (LNB) through a cascade formed from " \
"DiSEqC 1.1 uncommitted switch and DiSEqC 1.0 committed switch, " \
"the correct uncommitted LNB can be selected (1 to 4). " \
"If there is no uncommitted switch, this parameter should be 0.")
/* BDA module additional DVB-S Parameters */
#define NETID_TEXT N_("Network identifier")
#define AZIMUTH_TEXT N_("Satellite azimuth")
#define AZIMUTH_LONGTEXT N_("Satellite azimuth in tenths of degree")
#define ELEVATION_TEXT N_("Satellite elevation")
#define ELEVATION_LONGTEXT N_("Satellite elevation in tenths of degree")
#define LONGITUDE_TEXT N_("Satellite longitude")
#define LONGITUDE_LONGTEXT N_( \
"Satellite longitude in tenths of degree. West is negative.")
#define RANGE_TEXT N_("Satellite range code")
#define RANGE_LONGTEXT N_("Satellite range code as defined by manufacturer " \
"e.g. DISEqC switch code")
/* ATSC */
#define MAJOR_CHANNEL_TEXT N_("Major channel")
#define MINOR_CHANNEL_TEXT N_("ATSC minor channel")
#define PHYSICAL_CHANNEL_TEXT N_("Physical channel")
static int Open (vlc_object_t *);
static void Close (vlc_object_t *);
vlc_module_begin ()
set_shortname (N_("DTV"))
set_description (N_("Digital Television and Radio"))
set_category (CAT_INPUT)
set_subcategory (SUBCAT_INPUT_ACCESS)
set_capability ("access", 0)
set_callbacks (Open, Close)
add_shortcut ("dtv", "tv", "dvb", /* "radio", "dab",*/
"cable", "dvb-c", "cqam", "isdb-c",
"satellite", "dvb-s", "dvb-s2", "isdb-s",
"terrestrial", "dvb-t", "dvb-t2", "isdb-t", "atsc"
#ifdef _WIN32
,"dvbt"
#endif
)
#ifdef HAVE_LINUX_DVB
add_integer ("dvb-adapter", 0, ADAPTER_TEXT, ADAPTER_LONGTEXT)
change_integer_range (0, 255)
change_safe ()
add_integer ("dvb-device", 0, DEVICE_TEXT, DEVICE_LONGTEXT)
change_integer_range (0, 255)
change_safe ()
add_bool ("dvb-budget-mode", false, BUDGET_TEXT, BUDGET_LONGTEXT)
#endif
#ifdef _WIN32
add_integer ("dvb-adapter", -1, ADAPTER_TEXT, ADAPTER_LONGTEXT)
change_safe ()
add_string ("dvb-network-name", "", NAME_TEXT, NAME_LONGTEXT)
/* Hmm: is this one really safe??: */
add_string ("dvb-create-name", "", CREATE_TEXT, CREATE_LONGTEXT)
change_private ()
#endif
add_integer ("dvb-frequency", 0, FREQ_TEXT, FREQ_LONGTEXT)
change_integer_range (0, 107999999)
change_safe ()
add_integer ("dvb-inversion", -1, INVERSION_TEXT, INVERSION_LONGTEXT)
change_integer_list (auto_off_on_vlc, auto_off_on_user)
change_safe ()
set_section (N_("Terrestrial reception parameters"), NULL)
add_integer ("dvb-bandwidth", 0, BANDWIDTH_TEXT, NULL)
change_integer_list (bandwidth_vlc, bandwidth_user)
change_safe ()
add_integer ("dvb-transmission", 0,
TRANSMISSION_TEXT, NULL)
change_integer_list (transmission_vlc, transmission_user)
change_safe ()
add_string ("dvb-guard", "", GUARD_TEXT, NULL)
change_string_list (guard_vlc, guard_user)
change_safe ()
set_section (N_("DVB-T reception parameters"), NULL)
add_string ("dvb-code-rate-hp", "",
CODE_RATE_HP_TEXT, CODE_RATE_LONGTEXT)
change_string_list (code_rate_vlc, code_rate_user)
change_safe ()
add_string ("dvb-code-rate-lp", "",
CODE_RATE_LP_TEXT, CODE_RATE_LONGTEXT)
change_string_list (code_rate_vlc, code_rate_user)
change_safe ()
add_integer ("dvb-hierarchy", -1, HIERARCHY_TEXT, NULL)
change_integer_list (hierarchy_vlc, hierarchy_user)
change_safe ()
add_integer ("dvb-plp-id", 0, PLP_ID_TEXT, NULL)
change_integer_range (0, 255)
change_safe ()
set_section (N_("ISDB-T reception parameters"), NULL)
add_string ("dvb-a-modulation", NULL,
MODULATION_A_TEXT, MODULATION_LONGTEXT)
change_string_list (modulation_vlc, modulation_user)
change_safe ()
add_string ("dvb-a-fec", NULL, CODE_RATE_A_TEXT, CODE_RATE_LONGTEXT)
change_string_list (code_rate_vlc, code_rate_user)
change_safe ()
add_integer ("dvb-a-count", 0, SEGMENT_COUNT_A_TEXT, NULL)
change_integer_range (0, 13)
change_safe ()
add_integer ("dvb-a-interleaving", 0, TIME_INTERLEAVING_A_TEXT, NULL)
change_integer_range (0, 3)
change_safe ()
add_string ("dvb-b-modulation", NULL,
MODULATION_B_TEXT, MODULATION_LONGTEXT)
change_string_list (modulation_vlc, modulation_user)
change_safe ()
add_string ("dvb-b-fec", NULL, CODE_RATE_B_TEXT, CODE_RATE_LONGTEXT)
change_string_list (code_rate_vlc, code_rate_user)
change_safe ()
add_integer ("dvb-b-count", 0, SEGMENT_COUNT_B_TEXT, NULL)
change_integer_range (0, 13)
change_safe ()
add_integer ("dvb-b-interleaving", 0, TIME_INTERLEAVING_B_TEXT, NULL)
change_integer_range (0, 3)
change_safe ()
add_string ("dvb-c-modulation", NULL,
MODULATION_C_TEXT, MODULATION_LONGTEXT)
change_string_list (modulation_vlc, modulation_user)
change_safe ()
add_string ("dvb-c-fec", NULL, CODE_RATE_C_TEXT, CODE_RATE_LONGTEXT)
change_string_list (code_rate_vlc, code_rate_user)
change_safe ()
add_integer ("dvb-c-count", 0, SEGMENT_COUNT_C_TEXT, NULL)
change_integer_range (0, 13)
change_safe ()
add_integer ("dvb-c-interleaving", 0, TIME_INTERLEAVING_C_TEXT, NULL)
change_integer_range (0, 3)
change_safe ()
set_section (N_("Cable and satellite reception parameters"), NULL)
add_string ("dvb-modulation", NULL,
MODULATION_TEXT, MODULATION_LONGTEXT)
change_string_list (modulation_vlc, modulation_user)
change_safe ()
add_integer ("dvb-srate", 0, SRATE_TEXT, SRATE_LONGTEXT)
change_integer_range (0, UINT64_C(0xffffffff))
change_safe ()
add_string ("dvb-fec", "", CODE_RATE_TEXT, CODE_RATE_LONGTEXT)
change_string_list (code_rate_vlc, code_rate_user)
change_safe ()
set_section (N_("DVB-S2 parameters"), NULL)
add_integer ("dvb-stream", 0, STREAM_ID_TEXT, NULL)
change_integer_range (0, 255)
change_safe ()
add_integer ("dvb-pilot", -1, PILOT_TEXT, NULL)
change_integer_list (auto_off_on_vlc, auto_off_on_user)
change_safe ()
add_integer ("dvb-rolloff", -1, ROLLOFF_TEXT, NULL)
change_integer_list (rolloff_vlc, rolloff_user)
change_safe ()
set_section (N_("ISDB-S parameters"), NULL)
add_integer ("dvb-ts-id", 0, TS_ID_TEXT, NULL)
change_integer_range (0, 0xffff)
change_safe ()
set_section (N_("Satellite equipment control"), NULL)
add_string ("dvb-polarization", "",
POLARIZATION_TEXT, POLARIZATION_LONGTEXT)
change_string_list (polarization_vlc, polarization_user)
change_safe ()
add_integer ("dvb-voltage", 13, "", "")
change_integer_range (0, 18)
change_private ()
change_safe ()
#ifdef HAVE_LINUX_DVB
add_bool ("dvb-high-voltage", false,
HIGH_VOLTAGE_TEXT, HIGH_VOLTAGE_LONGTEXT)
#endif
add_integer ("dvb-lnb-low", 0, LNB_LOW_TEXT, LNB_LONGTEXT)
change_integer_range (0, 0x7fffffff)
add_integer ("dvb-lnb-high", 0, LNB_HIGH_TEXT, LNB_LONGTEXT)
change_integer_range (0, 0x7fffffff)
add_integer ("dvb-lnb-switch", 11700000,
LNB_SWITCH_TEXT, LNB_SWITCH_LONGTEXT)
change_integer_range (0, 0x7fffffff)
#ifdef HAVE_LINUX_DVB
add_integer ("dvb-satno", 0, SATNO_TEXT, SATNO_LONGTEXT)
change_integer_list (satno_vlc, satno_user)
change_safe ()
add_integer ("dvb-uncommitted", 0, UNCOMMITTED_TEXT, UNCOMMITTED_LONGTEXT)
change_integer_list (satno_vlc, satno_user)
change_safe ()
add_integer ("dvb-tone", -1, TONE_TEXT, TONE_LONGTEXT)
change_integer_list (auto_off_on_vlc, auto_off_on_user)
#endif
#ifdef _WIN32
add_integer ("dvb-network-id", 0, NETID_TEXT, NULL)
add_integer ("dvb-azimuth", 0, AZIMUTH_TEXT, AZIMUTH_LONGTEXT)
add_integer ("dvb-elevation", 0, ELEVATION_TEXT, ELEVATION_LONGTEXT)
add_integer ("dvb-longitude", 0, LONGITUDE_TEXT, LONGITUDE_LONGTEXT)
add_string ("dvb-range", "", RANGE_TEXT, RANGE_LONGTEXT)
/* dvb-range corresponds to the BDA InputRange parameter which is
* used by some drivers to control the diseqc */
set_section (N_("ATSC reception parameters"), NULL)
add_integer ("dvb-major-channel", 0, MAJOR_CHANNEL_TEXT, NULL)
add_integer ("dvb-minor-channel", 0, MINOR_CHANNEL_TEXT, NULL)
add_integer ("dvb-physical-channel", 0, PHYSICAL_CHANNEL_TEXT, NULL)
#endif
vlc_module_end ()
typedef struct
{
dvb_device_t *dev;
uint8_t signal_poll;
tuner_setup_t pf_setup;
} access_sys_t;
static block_t *Read (stream_t *, bool *);
static int Control (stream_t *, int, va_list);
static dtv_delivery_t GuessSystem (const char *, dvb_device_t *);
static dtv_delivery_t GetDeliveryByScheme(const char *psz_scheme);
static int Tune (vlc_object_t *, dvb_device_t *, tuner_setup_t, uint64_t);
static uint64_t var_InheritFrequency (vlc_object_t *);
tuner_setup_t dtv_get_delivery_tuner_setup( dtv_delivery_t d );
static int Open (vlc_object_t *obj)
{
stream_t *access = (stream_t *)obj;
access_sys_t *sys = malloc (sizeof (*sys));
if (unlikely(sys == NULL))
return VLC_ENOMEM;
var_LocationParse (obj, access->psz_location, "dvb-");
dvb_device_t *dev = dvb_open (obj);
if (dev == NULL)
{
free (sys);
return VLC_EGENERIC;
}
sys->dev = dev;
sys->signal_poll = 0;
sys->pf_setup = NULL;
access->p_sys = sys;
uint64_t freq = var_InheritFrequency (obj);
if (freq != 0)
{
dtv_delivery_t d = GuessSystem (access->psz_name, dev);
if(d != DTV_DELIVERY_NONE)
sys->pf_setup = dtv_get_delivery_tuner_setup(d);
if (sys->pf_setup == NULL || Tune (obj, dev, sys->pf_setup, freq))
{
msg_Err (obj, "tuning to %"PRIu64" Hz failed", freq);
vlc_dialog_display_error (obj, N_("Digital broadcasting"),
N_("The selected digital tuner does not support "
"the specified parameters.\n"
"Please check the preferences."));
goto error;
}
}
dvb_add_pid (dev, 0);
access->pf_block = Read;
access->pf_control = Control;
return VLC_SUCCESS;
error:
Close (obj);
access->p_sys = NULL;
return VLC_EGENERIC;
}
static void Close (vlc_object_t *obj)
{
stream_t *access = (stream_t *)obj;
access_sys_t *sys = access->p_sys;
dvb_close (sys->dev);
free (sys);
}
static block_t *Read (stream_t *access, bool *restrict eof)
{
#define BUFSIZE (20*188)
block_t *block = block_Alloc (BUFSIZE);
if (unlikely(block == NULL))
return NULL;
access_sys_t *sys = access->p_sys;
ssize_t val = dvb_read (sys->dev, block->p_buffer, BUFSIZE, -1);
if (val <= 0)
{
if (val == 0)
*eof = true;
block_Release (block);
return NULL;
}
block->i_buffer = val;
return block;
}
static int Control (stream_t *access, int query, va_list args)
{
access_sys_t *sys = access->p_sys;
dvb_device_t *dev = sys->dev;
switch (query)
{
case STREAM_CAN_SEEK:
case STREAM_CAN_FASTSEEK:
case STREAM_CAN_PAUSE:
case STREAM_CAN_CONTROL_PACE:
*va_arg (args, bool *) = false;
break;
case STREAM_GET_PTS_DELAY:
{
*va_arg (args, vlc_tick_t *) =
VLC_TICK_FROM_MS( var_InheritInteger (access, "live-caching") );
break;
}
case STREAM_GET_CONTENT_TYPE:
*va_arg (args, char **) = strdup ("video/MP2T");
break;
case STREAM_GET_SIGNAL:
/* Fetch the signal levels only every so often to avoid stressing
* the device bus. */
if ((sys->signal_poll++))
return VLC_EGENERIC;
*va_arg (args, double *) = dvb_get_snr (dev);
*va_arg (args, double *) = dvb_get_signal_strength (dev);
return VLC_SUCCESS;
case STREAM_SET_PRIVATE_ID_STATE:
{
unsigned pid = va_arg (args, int);
bool add = va_arg (args, int);
if (unlikely(pid > 0x1FFF))
return VLC_EGENERIC;
if (add)
{
if (dvb_add_pid (dev, pid))
return VLC_EGENERIC;
}
else
dvb_remove_pid (dev, pid);
break;
}
case STREAM_SET_PRIVATE_ID_CA:
{
en50221_capmt_info_t *pmt = va_arg(args, void *);
if( !dvb_set_ca_pmt (dev, pmt) )
return VLC_EGENERIC;
break;
}
case STREAM_GET_PRIVATE_ID_STATE:
{
unsigned pid = va_arg (args, int);
bool *on = va_arg (args, bool *);
*on = likely(pid <= 0x1FFF) ? dvb_get_pid_state(dev, pid) : false;
return VLC_SUCCESS;
}
default:
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
/*** Generic tuning ***/
/** Set parameters and tune the device */
static int Tune (vlc_object_t *obj, dvb_device_t *dev, tuner_setup_t pf_setup,
uint64_t freq)
{
if (pf_setup(obj, dev, freq)
|| dvb_set_inversion (dev, var_InheritInteger (obj, "dvb-inversion"))
|| dvb_tune (dev))
return VLC_EGENERIC;
return VLC_SUCCESS;
}
static uint64_t var_InheritFrequency (vlc_object_t *obj)
{
uint64_t freq = var_InheritInteger (obj, "dvb-frequency");
if (freq != 0 && freq < 30000000)
{
msg_Err (obj, "%"PRIu64" Hz carrier frequency is too low.", freq);
freq *= 1000;
msg_Info (obj, "Assuming %"PRIu64" Hz frequency instead.", freq);
}
return freq;
}
static uint32_t var_InheritCodeRate (vlc_object_t *obj, const char *varname)
{
char *code_rate = var_InheritString (obj, varname);
if (code_rate == NULL)
return VLC_FEC_AUTO;
uint16_t a, b;
int v = sscanf (code_rate, "%"SCNu16"/%"SCNu16, &a, &b);
free (code_rate);
switch (v)
{
case 2:
return VLC_FEC(a, b);
case 1:
if (a == 0)
return 0;
/* Backward compatibility with VLC < 1.2 (= Linux DVBv3 enum) */
if (a < 9)
{
msg_Warn (obj, "\"%s=%"PRIu16"\" option is obsolete. "
"Use \"%s=%"PRIu16"/%"PRIu16"\" instead.",
varname + 4, a, varname + 4, a, a + 1);
return VLC_FEC(a, a + 1);
}
else
msg_Warn (obj, "\"fec=9\" option is obsolete.");
}
return VLC_FEC_AUTO;
}
static int modcmp (const void *a, const void *b)
{
return strcasecmp (a, *(const char *const *)b);
}
static const char *var_InheritModulation (vlc_object_t *obj, const char *var)
{
char *mod = var_InheritString (obj, var);
if (mod == NULL)
return "";
size_t n = sizeof (modulation_vlc) / sizeof (modulation_vlc[0]);
const char *const *p = lfind (mod, modulation_vlc, &n, sizeof (mod), modcmp);
if (p != NULL)
{
free (mod);
return *p;
}
/* Backward compatibility with VLC < 1.2 */
const char *str;
switch (atoi (mod))
{
case -1: str = "QPSK"; break;
case 0: str = "QAM"; break;
case 8: str = "8VSB"; break;
case 16: str = "16QAM"; break;
case 32: str = "32QAM"; break;
case 64: str = "64QAM"; break;
case 128: str = "128QAM"; break;
case 256: str = "256QAM"; break;
default: return "";
}
msg_Warn (obj, "\"modulation=%s\" option is obsolete. "
"Use \"modulation=%s\" instead.", mod, str);
free (mod);
return str;
}
static unsigned var_InheritGuardInterval (vlc_object_t *obj)
{
char *guard = var_InheritString (obj, "dvb-guard");
if (guard == NULL)
return VLC_GUARD_AUTO;
uint16_t a, b;
int v = sscanf (guard, "%"SCNu16"/%"SCNu16, &a, &b);
free (guard);
switch (v)
{
case 1:
/* Backward compatibility with VLC < 1.2 */
if (a == 0)
break;
msg_Warn (obj, "\"guard=%"PRIu16"\" option is obsolete. "
"Use \"guard=1/%"PRIu16" instead.", a, a);
b = a;
a = 1;
/* fall through */
case 2:
return VLC_GUARD(a, b);
}
return VLC_GUARD_AUTO;
}
/*** ATSC ***/
static int atsc_setup (vlc_object_t *obj, dvb_device_t *dev, uint64_t freq)
{
const char *mod = var_InheritModulation (obj, "dvb-modulation");
return dvb_set_atsc (dev, freq, mod);
}
static int cqam_setup (vlc_object_t *obj, dvb_device_t *dev, uint64_t freq)
{
const char *mod = var_InheritModulation (obj, "dvb-modulation");
return dvb_set_cqam (dev, freq, mod);
}
/*** DVB-C ***/
static int dvbc_setup (vlc_object_t *obj, dvb_device_t *dev, uint64_t freq)
{
const char *mod = var_InheritModulation (obj, "dvb-modulation");
uint32_t fec = var_InheritCodeRate (obj, "dvb-fec");
unsigned srate = var_InheritInteger (obj, "dvb-srate");
return dvb_set_dvbc (dev, freq, mod, srate, fec);
}
/*** DVB-S ***/
static char var_InheritPolarization (vlc_object_t *obj)
{
char pol;
char *polstr = var_InheritString (obj, "dvb-polarization");
if (polstr != NULL)
{
pol = *polstr;
free (polstr);
if (unlikely(pol >= 'a' && pol <= 'z'))
pol -= 'a' - 'A';
return pol;
}
/* Backward compatibility with VLC for Linux < 1.2 */
unsigned voltage = var_InheritInteger (obj, "dvb-voltage");
switch (voltage)
{
case 13: pol = 'V'; break;
case 18: pol = 'H'; break;
default: return 0;
}
msg_Warn (obj, "\"voltage=%u\" option is obsolete. "
"Use \"polarization=%c\" instead.", voltage, pol);
return pol;
}
static void sec_setup (vlc_object_t *obj, dvb_device_t *dev, uint64_t freq)
{
char pol = var_InheritPolarization (obj);
unsigned lowf = var_InheritInteger (obj, "dvb-lnb-low");
unsigned highf = var_InheritInteger (obj, "dvb-lnb-high");
unsigned switchf = var_InheritInteger (obj, "dvb-lnb-switch");
dvb_set_sec (dev, freq, pol, lowf, highf, switchf);
}
static int dvbs_setup (vlc_object_t *obj, dvb_device_t *dev, uint64_t freq)
{
uint32_t fec = var_InheritCodeRate (obj, "dvb-fec");
uint32_t srate = var_InheritInteger (obj, "dvb-srate");
int ret = dvb_set_dvbs (dev, freq, srate, fec);
if (ret == 0)
sec_setup (obj, dev, freq);
return ret;
}
static int dvbs2_setup (vlc_object_t *obj, dvb_device_t *dev, uint64_t freq)
{
const char *mod = var_InheritModulation (obj, "dvb-modulation");
uint32_t fec = var_InheritCodeRate (obj, "dvb-fec");
uint32_t srate = var_InheritInteger (obj, "dvb-srate");
int pilot = var_InheritInteger (obj, "dvb-pilot");
int rolloff = var_InheritInteger (obj, "dvb-rolloff");
uint8_t sid = var_InheritInteger (obj, "dvb-stream");
int ret = dvb_set_dvbs2 (dev, freq, mod, srate, fec, pilot, rolloff, sid);
if (ret == 0)
sec_setup (obj, dev, freq);
return ret;
}
/*** DVB-T ***/
static int dvbt_setup (vlc_object_t *obj, dvb_device_t *dev, uint64_t freq)
{
const char *mod = var_InheritModulation (obj, "dvb-modulation");
uint32_t fec_hp = var_InheritCodeRate (obj, "dvb-code-rate-hp");
uint32_t fec_lp = var_InheritCodeRate (obj, "dvb-code-rate-lp");
uint32_t guard = var_InheritGuardInterval (obj);
uint32_t bw = var_InheritInteger (obj, "dvb-bandwidth");
int tx = var_InheritInteger (obj, "dvb-transmission");
int h = var_InheritInteger (obj, "dvb-hierarchy");
return dvb_set_dvbt (dev, freq, mod, fec_hp, fec_lp, bw, tx, guard, h);
}
static int dvbt2_setup (vlc_object_t *obj, dvb_device_t *dev, uint64_t freq)
{
const char *mod = var_InheritModulation (obj, "dvb-modulation");
uint32_t fec = var_InheritCodeRate (obj, "dvb-fec");
uint32_t guard = var_InheritGuardInterval (obj);
uint32_t bw = var_InheritInteger (obj, "dvb-bandwidth");
uint32_t plp = var_InheritInteger (obj, "dvb-plp-id");
int tx = var_InheritInteger (obj, "dvb-transmission");
return dvb_set_dvbt2 (dev, freq, mod, fec, bw, tx, guard, plp);
}
/*** ISDB-C ***/
static int isdbc_setup (vlc_object_t *obj, dvb_device_t *dev, uint64_t freq)
{
const char *mod = var_InheritModulation (obj, "dvb-modulation");
uint32_t fec = var_InheritCodeRate (obj, "dvb-fec");
unsigned srate = var_InheritInteger (obj, "dvb-srate");
return dvb_set_isdbc (dev, freq, mod, srate, fec);
}
/*** ISDB-S ***/
static int isdbs_setup (vlc_object_t *obj, dvb_device_t *dev, uint64_t freq)
{
uint16_t ts_id = var_InheritInteger (obj, "dvb-ts-id");
int ret = dvb_set_isdbs (dev, freq, ts_id);
if (ret == 0)
sec_setup (obj, dev, freq);
return ret;
}
/*** ISDB-T ***/
static int isdbt_setup (vlc_object_t *obj, dvb_device_t *dev, uint64_t freq)
{
isdbt_layer_t layers[3];
uint32_t guard = var_InheritGuardInterval (obj);
uint32_t bw = var_InheritInteger (obj, "dvb-bandwidth");
int tx = var_InheritInteger (obj, "dvb-transmission");
for (unsigned i = 0; i < 3; i++)
{
char varname[sizeof ("dvb-X-interleaving")];
memcpy (varname, "dvb-X-", 6);
varname[4] = 'a' + i;
strcpy (varname + 6, "modulation");
layers[i].modulation = var_InheritModulation (obj, varname);
strcpy (varname + 6, "fec");
layers[i].code_rate = var_InheritCodeRate (obj, varname);
strcpy (varname + 6, "count");
layers[i].segment_count = var_InheritInteger (obj, varname);
strcpy (varname + 6, "interleaving");
layers[i].time_interleaving = var_InheritInteger (obj, varname);
}
return dvb_set_isdbt (dev, freq, bw, tx, guard, layers);
}
static const struct
{
const dtv_delivery_t delivery;
tuner_setup_t const pf_setup;
const char *psz_scheme;
} delsys_mappings[] = {
{ DTV_DELIVERY_ATSC, atsc_setup, "atsc" },
{ DTV_DELIVERY_CQAM, cqam_setup, "cqam" },
{ DTV_DELIVERY_DVB_C, dvbc_setup, "dvb-c" },
{ DTV_DELIVERY_DVB_C2, dvbc_setup, "dvb-c2" },
{ DTV_DELIVERY_DVB_S, dvbs_setup, "dvb-s" },
{ DTV_DELIVERY_DVB_S2, dvbs2_setup, "dvb-s2" },
{ DTV_DELIVERY_DVB_T, dvbt_setup, "dvb-t" },
{ DTV_DELIVERY_DVB_T2, dvbt2_setup, "dvb-t2" },
{ DTV_DELIVERY_ISDB_C, isdbc_setup, "isdb-c" },
{ DTV_DELIVERY_ISDB_S, isdbs_setup, "isdb-s" },
{ DTV_DELIVERY_ISDB_T, isdbt_setup, "isdb-t" },
};
tuner_setup_t dtv_get_delivery_tuner_setup( dtv_delivery_t d )
{
for (size_t i=0; i<ARRAY_SIZE(delsys_mappings); i++)
{
if ( delsys_mappings[i].delivery == d )
return delsys_mappings[i].pf_setup;
}
return NULL;
}
static dtv_delivery_t GetDeliveryByScheme(const char *psz_scheme)
{
for (size_t i=0; i<ARRAY_SIZE(delsys_mappings); i++)
{
if(!strcasecmp(psz_scheme, delsys_mappings[i].psz_scheme))
return delsys_mappings[i].delivery;
}
return DTV_DELIVERY_NONE;
}
static inline dtv_delivery_t GetSingleDelivery( dtv_delivery_t d )
{
if( d == 0 )
return DTV_DELIVERY_NONE;
else
return 1 << ctz( d );
}
/** Determines which delivery system to use. */
static dtv_delivery_t GuessSystem (const char *scheme, dvb_device_t *dev)
{
/* Specific delivery system is specified */
dtv_delivery_t d = GetDeliveryByScheme(scheme);
if(d != DTV_DELIVERY_NONE)
return d;
/* If the demodulator supports 2G, we cannot guess whether
* 1G or 2G is intended. For backward compatibility, 1G is assumed
* (this is not a limitation of Linux DVB). We will probably need something
* smarter when 2G (semi automatic) scanning is implemented. */
unsigned systems = dvb_enum_systems (dev);
systems &= ~DTV_DELGROUP_G2;
if( systems )
{
/* Only wave carrier is specified */
if (!strcasecmp (scheme, "cable"))
{
return GetSingleDelivery(systems & DTV_DELGROUP_CABLE);
}
else if (!strcasecmp (scheme, "satellite"))
{
return GetSingleDelivery(systems & DTV_DELGROUP_SAT);
}
else if (!strcasecmp (scheme, "terrestrial"))
{
return GetSingleDelivery(systems & DTV_DELGROUP_TERRES);
}
else
{
/* Only standards family or nothing is specified */
return GetSingleDelivery(systems);
}
}
return DTV_DELIVERY_NONE;
}