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input_dvb.c
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input_dvb.c
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/*
* Copyright (C) 2000-2008 the xine project
*
* This file is part of xine, a free video player.
*
* xine is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* xine 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
*
* Input plugin for Digital TV (Digital Video Broadcast - DVB) devices,
* e.g. Hauppauge WinTV Nova supported by DVB drivers from Convergence.
*
*
* MODIFICATION HISTORY
*
* Date Author
* ---- ------
*
* 01-Feb-2005 Pekka Jääskeläinen <poj@iki.fi>
*
* - This history log started.
* - Disabled the automatic EPG updater thread until EPG demuxer
* is done (it caused pausing of video stream), now EPG is
* updated only on demand when the EPG OSD is displayed and
* no data is in cache.
* - Tried to stabilize the EPG updater thread.
* - Fixed a tuning problem I had with Linux 2.6.11-rc2.
* - Now tuning to an erroneus channel shouldn't hang but stop
* the playback and output a log describing the error.
* - Style cleanups here and there.
*
* 06-Apr-2006 Jack Steven Kelliher
* - Add ATSC support
*
* TODO/Wishlist: (not in any order)
* - Parse all Administrative PIDs - NIT,SDT,CAT etc
* - As per James' suggestion, we need a way for the demuxer
* to request PIDs from the input plugin.
* - Timeshift ability.
* - Pipe teletext infomation to a named fifo so programs such as
* Alevtd can read it.
* - Allow the user to view one set of PIDs (channel) while
* recording another on the same transponder - this will require either remuxing or
* perhaps bypassing the TS demuxer completely - we could easily have access to the
* individual audio/video streams via seperate read calls, so send them to the decoders
* and save the TS output to disk instead of passing it to the demuxer.
* This also gives us full control over the streams being played..hmm..control...
* - Parse and use full EIT for programming info.
* - Allow the user to find and tune new stations from within xine, and
* do away with the need for dvbscan & channels.conf file.
* - Enable use of Conditional Access devices for scrambled content.
* - if multiple cards are available, optionally use these to record/gather si info,
* and leave primary card for viewing.
* - allow for handing off of EPG data to specialised frontends, instead of displaying via
* OSD - this will allow for filtering/searching of epg data - useful for automatic recording :)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* pthread.h must be included first so rest of the headers are imported
thread safely (on some systems).
However, including it before config.h causes problems with asprintf not
being declared (glibc 2.3.6)
*/
#include <pthread.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <sys/socket.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <poll.h>
#ifdef __sun
#include <sys/ioccom.h>
#endif
#include <sys/poll.h>
#include <time.h>
#ifdef HAVE_DIRENT_H
#include <dirent.h>
#endif
#include <ctype.h>
#ifdef HAVE_FFMPEG_AVUTIL_H
# include <crc.h>
#else
# include <libavutil/crc.h>
#endif
/* XDG */
#include <basedir.h>
#include <linux/dvb/dmx.h>
#include <linux/dvb/frontend.h>
#define LOG_MODULE "input_dvb"
#define LOG_VERBOSE
/*
#define LOG
#define LOG_READS
*/
#include <xine/xine_internal.h>
#include <xine/xineutils.h>
#include <xine/input_plugin.h>
#include "net_buf_ctrl.h"
#define BUFSIZE 16384
#define DVB_NOPID 0xffff
/* define stream types
* administrative/system PIDs first */
#define INTERNAL_FILTER 0
#define PATFILTER 1
#define PMTFILTER 2
#define EITFILTER 3
#define PCRFILTER 4
#define VIDFILTER 5
#define AUDFILTER 6
#define AC3FILTER 7
#define TXTFILTER 8
#define MAX_FILTERS 9
#define MAX_AUTOCHANNELS 200
#define MAX_SUBTITLES 4
/* define for alternate non-buffered mode */
/*
#define DVB_NO_BUFFERING
*/
/* Mouse button codes. */
#define MOUSE_BUTTON_LEFT 1
#define MOUSE_BUTTON_MIDDLE 2
#define MOUSE_BUTTON_RIGHT 3
#define MOUSE_WHEEL_UP 4
#define MOUSE_WHEEL_DOWN 5
/* The "thumb button" of my Intellimouse. */
#define MOUSE_SIDE_LEFT 6
#define MOUSE_SIDE_RIGHT 7
/* EPG settings. */
/* define to have EPG come up on left mouse click */
/*
#define LEFT_MOUSE_DOES_EPG
*/
/* define to make EPG data updated in background in a separate thread */
/*#define EPG_UPDATE_IN_BACKGROUND */
/* Delay between EPG data updates in the EPG updater thread in seconds. */
#define EPG_UPDATE_DELAY 60
/* Width of the EPG OSD area. */
#define EPG_WIDTH 520
/* Height of the EPG OSD area. */
#define EPG_HEIGHT 620
/* Minimum top margin of the EPG in the video window. */
#define EPG_TOP 50
/* Font size of the channel name text. */
#define EPG_CHANNEL_FONT_SIZE 32
/* Font size of the clock. */
#define EPG_CLOCK_FONT_SIZE 18
/* Font size of the header text (duration and program name). */
#define EPG_TITLE_FONT_SIZE 24
/* Font size of the content type and rating text. */
#define EPG_CONTENT_FONT_SIZE 18
/* Font size of the program description text. */
#define EPG_DESCRIPTION_FONT_SIZE 18
#define EPG_PIXELS_BETWEEN_TEXT_ROWS 2
#define EPG_PIXELS_BETWEEN_PROGRAM_ENTRIES 2
/* How many pixels the background of the OSD is bigger than the text area?
The margin is for each side of the background box. */
#define EPG_BACKGROUND_MARGIN 5
#define MAX_EPG_PROGRAM_NAME_LENGTH 255
#define MAX_EPG_PROGRAM_DESCRIPTION_LENGTH 255
#define MAX_EPG_CONTENT_TYPE_LENGTH 20
#define MAX_EPG_ENTRIES_PER_CHANNEL 10
/* How many seconds an EPG entry with the running flag on can be "late"
according to the system time before discarding it as an old program?
This margin is needed because in channel list OSD some EPG entries of
some channels may be updated a very long ago (if user has watched another
channel in different mux) so we have to resort to system clock for
figuring out the current program. */
#define MAX_EPG_ENTRY_LATENESS 5*60.0
/*
#define DEBUG_EPG
*/
/* Channel selector OSD settings. */
#define CHSEL_WIDTH 600
#define CHSEL_HEIGHT 400
#define CHSEL_CHANNEL_FONT_SIZE 26
#define CHSEL_PROGRAM_NAME_FONT_SIZE 12
#define bcdtoint(i) ((((i & 0xf0) >> 4) * 10) + (i & 0x0f))
typedef struct {
int fd_frontend;
int fd_pidfilter[MAX_FILTERS];
int fd_subfilter[MAX_SUBTITLES];
struct dvb_frontend_info feinfo;
int adapter_num;
char *dvr_device;
char *demux_device;
struct dmx_pes_filter_params pesFilterParams[MAX_FILTERS];
struct dmx_pes_filter_params subFilterParams[MAX_SUBTITLES];
struct dmx_sct_filter_params sectFilterParams[MAX_FILTERS];
xine_t *xine;
} tuner_t;
/* EPG entry. */
typedef struct {
/* Program's name. */
char *progname;
/* Textual description of the program. */
char *description;
/* The content type string. */
char *content;
/* Age recommendation. 0 if not available. */
int rating;
time_t starttime;
/* Program's duration in hours + minutes. */
char duration_hours;
char duration_minutes;
/* Is this program running currently according to EPG data? */
char running;
} epg_entry_t;
typedef struct {
char *name;
struct dvb_frontend_parameters front_param;
int pid[MAX_FILTERS];
int subpid[MAX_SUBTITLES];
int service_id;
int sat_no;
int tone;
int pol;
int pmtpid;
int epg_count;
epg_entry_t *epg[MAX_EPG_ENTRIES_PER_CHANNEL];
} channel_t;
typedef struct {
input_class_t input_class;
xine_t *xine;
const char *mrls[6];
int numchannels;
char *autoplaylist[MAX_AUTOCHANNELS];
const AVCRC *av_crc;
} dvb_input_class_t;
typedef struct {
input_plugin_t input_plugin;
dvb_input_class_t *class;
xine_stream_t *stream;
char *mrl;
off_t curpos;
nbc_t *nbc;
tuner_t *tuner;
channel_t *channels;
int fd;
/* Is channel tuned in correctly, i.e., can we read program stream? */
int tuned_in;
int num_channels;
int channel;
pthread_mutex_t channel_change_mutex;
osd_object_t *osd;
osd_object_t *rec_osd;
osd_object_t *name_osd;
osd_object_t *paused_osd;
osd_object_t *proginfo_osd;
osd_object_t *channel_osd;
osd_object_t *background;
xine_event_queue_t *event_queue;
/* scratch buffer for forward seeking */
char seek_buf[BUFSIZE];
/* Is the GUI enabled at all? */
int dvb_gui_enabled;
/* simple vcr-like functionality */
int record_fd;
int record_paused;
/* centre cutout zoom */
int zoom_ok;
/* Is EPG displaying? */
int epg_displaying;
/* This is set to non-zero if the updater thread is wanted to stop. */
int epg_updater_stop;
pthread_t epg_updater_thread;
/* buffer for EIT data */
/*char *eitbuffer;*/
int num_streams_in_this_ts;
/* number of timedout reads in plugin_read */
int read_failcount;
#ifdef DVB_NO_BUFFERING
int newchannel;
#endif
} dvb_input_plugin_t;
typedef struct {
const char *name;
int value;
} Param;
static const Param inversion_list [] = {
{ "INVERSION_OFF", INVERSION_OFF },
{ "INVERSION_ON", INVERSION_ON },
{ "INVERSION_AUTO", INVERSION_AUTO },
{ NULL, 0 }
};
static const Param bw_list [] = {
{ "BANDWIDTH_6_MHZ", BANDWIDTH_6_MHZ },
{ "BANDWIDTH_7_MHZ", BANDWIDTH_7_MHZ },
{ "BANDWIDTH_8_MHZ", BANDWIDTH_8_MHZ },
{ "BANDWIDTH_AUTO", BANDWIDTH_AUTO },
{ NULL, 0 }
};
static const Param fec_list [] = {
{ "FEC_1_2", FEC_1_2 },
{ "FEC_2_3", FEC_2_3 },
{ "FEC_3_4", FEC_3_4 },
{ "FEC_4_5", FEC_4_5 },
{ "FEC_5_6", FEC_5_6 },
{ "FEC_6_7", FEC_6_7 },
{ "FEC_7_8", FEC_7_8 },
{ "FEC_8_9", FEC_8_9 },
{ "FEC_AUTO", FEC_AUTO },
{ "FEC_NONE", FEC_NONE },
{ NULL, 0 }
};
static const Param guard_list [] = {
{"GUARD_INTERVAL_1_16", GUARD_INTERVAL_1_16},
{"GUARD_INTERVAL_1_32", GUARD_INTERVAL_1_32},
{"GUARD_INTERVAL_1_4", GUARD_INTERVAL_1_4},
{"GUARD_INTERVAL_1_8", GUARD_INTERVAL_1_8},
{"GUARD_INTERVAL_AUTO", GUARD_INTERVAL_AUTO},
{ NULL, 0 }
};
static const Param hierarchy_list [] = {
{ "HIERARCHY_1", HIERARCHY_1 },
{ "HIERARCHY_2", HIERARCHY_2 },
{ "HIERARCHY_4", HIERARCHY_4 },
{ "HIERARCHY_NONE", HIERARCHY_NONE },
{ "HIERARCHY_AUTO", HIERARCHY_AUTO },
{ NULL, 0 }
};
static const Param atsc_list [] = {
{ "8VSB", VSB_8 },
{ "QAM_256", QAM_256 },
{ "QAM_64", QAM_64 },
{ "QAM", QAM_AUTO },
{ NULL, 0 }
};
static const Param qam_list [] = {
{ "QPSK", QPSK },
{ "QAM_128", QAM_128 },
{ "QAM_16", QAM_16 },
{ "QAM_256", QAM_256 },
{ "QAM_32", QAM_32 },
{ "QAM_64", QAM_64 },
{ "QAM_AUTO", QAM_AUTO },
{ NULL, 0 }
};
static const Param transmissionmode_list [] = {
{ "TRANSMISSION_MODE_2K", TRANSMISSION_MODE_2K },
{ "TRANSMISSION_MODE_8K", TRANSMISSION_MODE_8K },
{ "TRANSMISSION_MODE_AUTO", TRANSMISSION_MODE_AUTO },
{ NULL, 0 }
};
static time_t dvb_mjdtime (uint8_t *buf);
static void load_epg_data(dvb_input_plugin_t *this);
static void show_eit(dvb_input_plugin_t *this);
/* Utility Functions */
static void print_error(const char* estring) {
printf("input_dvb: ERROR: %s\n", estring);
}
#ifdef DEBUG_EPG
static void print_info(const char* estring) {
printf("input_dvb: %s\n", estring);
}
#endif
static unsigned int getbits(unsigned char *buffer, unsigned int bitpos, unsigned int bitcount)
{
unsigned int i;
unsigned int val = 0;
for (i = bitpos; i < bitcount + bitpos; i++) {
val = val << 1;
val = val + ((buffer[i >> 3] & (0x80 >> (i & 7))) ? 1 : 0);
}
return val;
}
static int find_descriptor(uint8_t tag, const unsigned char *buf, int descriptors_loop_len,
const unsigned char **desc, int *desc_len)
{
while (descriptors_loop_len > 0) {
unsigned char descriptor_tag = buf[0];
unsigned char descriptor_len = buf[1] + 2;
if (!descriptor_len) {
break;
}
if (tag == descriptor_tag) {
if (desc)
*desc = buf;
if (desc_len)
*desc_len = descriptor_len;
return 1;
}
buf += descriptor_len;
descriptors_loop_len -= descriptor_len;
}
return 0;
}
/* Extract UTC time and date encoded in modified julian date format and return it as a time_t.
*/
static time_t dvb_mjdtime (uint8_t *buf)
{
int i;
unsigned int year, month, day, hour, min, sec;
unsigned long int mjd;
struct tm *tma = calloc(1, sizeof(struct tm));
time_t t;
_x_assert(tma != NULL);
mjd = (unsigned int)(buf[0] & 0xff) << 8;
mjd +=(unsigned int)(buf[1] & 0xff);
hour =(unsigned char)bcdtoint(buf[2] & 0xff);
min = (unsigned char)bcdtoint(buf[3] & 0xff);
sec = (unsigned char)bcdtoint(buf[4] & 0xff);
year =(unsigned long)((mjd - 15078.2)/365.25);
month=(unsigned long)((mjd - 14956.1 - (unsigned long)(year * 365.25))/30.6001);
day = mjd - 14956 - (unsigned long)(year * 365.25) - (unsigned long)(month * 30.6001);
if (month == 14 || month == 15)
i = 1;
else
i = 0;
year += i;
month = month - 1 - i * 12;
tma->tm_sec=sec;
tma->tm_min=min;
tma->tm_hour=hour;
tma->tm_mday=day;
tma->tm_mon=month-1;
tma->tm_year=year;
t = timegm(tma);
free(tma);
return t;
}
static void tuner_dispose(tuner_t * this)
{
int x;
if (this->fd_frontend >= 0)
close(this->fd_frontend);
/* close all pid filter filedescriptors */
for (x = 0; x < MAX_FILTERS; x++)
if (this->fd_pidfilter[x] >= 0)
close(this->fd_pidfilter[x]);
/* close all pid filter filedescriptors */
for (x = 0; x < MAX_SUBTITLES; x++)
if (this->fd_subfilter[x] >= 0)
close(this->fd_subfilter[x]);
free(this->dvr_device);
free(this->demux_device);
free(this);
}
static tuner_t *XINE_MALLOC tuner_init(xine_t * xine, int adapter)
{
tuner_t *this;
int x;
int test_video;
char *video_device = NULL;
char *frontend_device = NULL;
this = (tuner_t *) xine_xmalloc(sizeof(tuner_t));
_x_assert(this != NULL);
xprintf(this->xine, XINE_VERBOSITY_DEBUG, "tuner_init adapter=%d\n", adapter);
this->fd_frontend = -1;
memset(this->fd_pidfilter, 0, sizeof(this->fd_pidfilter));
this->xine = xine;
this->adapter_num = adapter;
this->demux_device = _x_asprintf("/dev/dvb/adapter%i/demux0",this->adapter_num);
this->dvr_device = _x_asprintf("/dev/dvb/adapter%i/dvr0",this->adapter_num);
video_device = _x_asprintf("/dev/dvb/adapter%i/video0",this->adapter_num);
frontend_device = _x_asprintf("/dev/dvb/adapter%i/frontend0",this->adapter_num);
if ((this->fd_frontend = xine_open_cloexec(frontend_device, O_RDWR)) < 0) {
xprintf(this->xine, XINE_VERBOSITY_DEBUG, "FRONTEND DEVICE: %s\n", strerror(errno));
tuner_dispose(this);
this = NULL;
goto exit;
}
free(frontend_device); frontend_device = NULL;
if ((ioctl(this->fd_frontend, FE_GET_INFO, &this->feinfo)) < 0) {
xprintf(this->xine, XINE_VERBOSITY_DEBUG, "FE_GET_INFO: %s\n", strerror(errno));
tuner_dispose(this);
this = NULL;
goto exit;
}
for (x = 0; x < MAX_FILTERS; x++) {
this->fd_pidfilter[x] = xine_open_cloexec(this->demux_device, O_RDWR);
if (this->fd_pidfilter[x] < 0) {
xprintf(this->xine, XINE_VERBOSITY_DEBUG, "DEMUX DEVICE PIDfilter: %s\n", strerror(errno));
tuner_dispose(this);
this = NULL;
goto exit;
}
}
for (x = 0; x < MAX_SUBTITLES; x++) {
this->fd_subfilter[x] = xine_open_cloexec(this->demux_device, O_RDWR);
if (this->fd_subfilter[x] < 0) {
xprintf(this->xine, XINE_VERBOSITY_DEBUG, "DEMUX DEVICE Subtitle filter: %s\n", strerror(errno));
}
}
/* open EIT with NONBLOCK */
if(fcntl(this->fd_pidfilter[EITFILTER], F_SETFL, O_NONBLOCK)<0)
xprintf(this->xine,XINE_VERBOSITY_DEBUG,"input_dvb: couldn't set EIT to nonblock: %s\n",strerror(errno));
/* and the internal filter used for PAT & PMT */
if(fcntl(this->fd_pidfilter[INTERNAL_FILTER], F_SETFL, O_NONBLOCK)<0)
xprintf(this->xine,XINE_VERBOSITY_DEBUG,"input_dvb: couldn't set INTERNAL to nonblock: %s\n",strerror(errno));
/* and the frontend */
fcntl(this->fd_frontend, F_SETFL, O_NONBLOCK);
xprintf(this->xine,XINE_VERBOSITY_DEBUG,"input_dvb: Frontend is <%s> ",this->feinfo.name);
if(this->feinfo.type==FE_QPSK) xprintf(this->xine,XINE_VERBOSITY_DEBUG,"SAT Card\n");
if(this->feinfo.type==FE_QAM) xprintf(this->xine,XINE_VERBOSITY_DEBUG,"CAB Card\n");
if(this->feinfo.type==FE_OFDM) xprintf(this->xine,XINE_VERBOSITY_DEBUG,"TER Card\n");
if(this->feinfo.type==FE_ATSC) xprintf(this->xine,XINE_VERBOSITY_DEBUG,"US Card\n");
if ((test_video=xine_open_cloexec(video_device, O_RDWR)) < 0) {
xprintf(this->xine,XINE_VERBOSITY_DEBUG,"input_dvb: Card has no hardware decoder\n");
}else{
xprintf(this->xine,XINE_VERBOSITY_DEBUG,"input_dvb: Card HAS HARDWARE DECODER\n");
close(test_video);
}
exit:
free(video_device);
free(frontend_device);
return this;
}
static int dvb_set_pidfilter(dvb_input_plugin_t * this, int filter, ushort pid, int pidtype, int taptype)
{
tuner_t *tuner = this->tuner;
if(this->channels[this->channel].pid [filter] !=DVB_NOPID) {
ioctl(tuner->fd_pidfilter[filter], DMX_STOP);
}
this->channels[this->channel].pid [filter] = pid;
tuner->pesFilterParams[filter].pid = pid;
tuner->pesFilterParams[filter].input = DMX_IN_FRONTEND;
tuner->pesFilterParams[filter].output = taptype;
tuner->pesFilterParams[filter].pes_type = pidtype;
tuner->pesFilterParams[filter].flags = DMX_IMMEDIATE_START;
if (ioctl(tuner->fd_pidfilter[filter], DMX_SET_PES_FILTER, &tuner->pesFilterParams[filter]) < 0)
{
xprintf(tuner->xine, XINE_VERBOSITY_DEBUG, "input_dvb: set_pid: %s\n", strerror(errno));
return 0;
}
return 1;
}
static int dvb_set_sectfilter(dvb_input_plugin_t * this, int filter, ushort pid, int pidtype, char table, char mask)
{
tuner_t *tuner = this->tuner;
if(this->channels[this->channel].pid [filter] !=DVB_NOPID) {
ioctl(tuner->fd_pidfilter[filter], DMX_STOP);
}
this->channels[this->channel].pid [filter] = pid;
tuner->sectFilterParams[filter].pid = pid;
memset(&tuner->sectFilterParams[filter].filter.filter,0,DMX_FILTER_SIZE);
memset(&tuner->sectFilterParams[filter].filter.mask,0,DMX_FILTER_SIZE);
tuner->sectFilterParams[filter].timeout = 0;
tuner->sectFilterParams[filter].filter.filter[0] = table;
tuner->sectFilterParams[filter].filter.mask[0] = mask;
tuner->sectFilterParams[filter].flags = DMX_IMMEDIATE_START;
if (ioctl(tuner->fd_pidfilter[filter], DMX_SET_FILTER, &tuner->sectFilterParams[filter]) < 0){
xprintf(tuner->xine, XINE_VERBOSITY_DEBUG, "input_dvb: set_sectionfilter: %s\n", strerror(errno));
return 0;
}
return 1;
}
static int find_param(const Param *list, const char *name)
{
while (list->name && strcmp(list->name, name))
list++;
return list->value;;
}
static int extract_channel_from_string_internal(channel_t * channel,char * str,fe_type_t fe_type)
{
/*
try to extract channel data from a string in the following format
(DVBS) QPSK: <channel name>:<frequency>:<polarisation>:<sat_no>:<sym_rate>:<vpid>:<apid>
(DVBC) QAM: <channel name>:<frequency>:<inversion>:<sym_rate>:<fec>:<qam>:<vpid>:<apid>
(DVBT) OFDM: <channel name>:<frequency>:<inversion>:
<bw>:<fec_hp>:<fec_lp>:<qam>:
<transmissionm>:<guardlist>:<hierarchinfo>:<vpid>:<apid>
(DVBA) ATSC: <channel name>:<frequency>:<qam>:<vpid>:<apid>
<channel name> = any string not containing ':'
<frequency> = unsigned long
<polarisation> = 'v' or 'h'
<sat_no> = unsigned long, usually 0 :D
<sym_rate> = symbol rate in MSyms/sec
<inversion> = INVERSION_ON | INVERSION_OFF | INVERSION_AUTO
<fec> = FEC_1_2, FEC_2_3, FEC_3_4 .... FEC_AUTO ... FEC_NONE
<qam> = QPSK, QAM_128, QAM_16, ATSC ...
<bw> = BANDWIDTH_6_MHZ, BANDWIDTH_7_MHZ, BANDWIDTH_8_MHZ
<fec_hp> = <fec>
<fec_lp> = <fec>
<transmissionm> = TRANSMISSION_MODE_2K, TRANSMISSION_MODE_8K
<vpid> = video program id
<apid> = audio program id
*/
unsigned long freq;
char *field, *tmp;
tmp = str;
/* find the channel name */
if(!(field = strsep(&tmp,":")))return -1;
channel->name = strdup(field);
/* find the frequency */
if(!(field = strsep(&tmp, ":")))return -1;
freq = strtoul(field,NULL,0);
switch(fe_type)
{
case FE_QPSK:
if(freq > 11700)
{
channel->front_param.frequency = (freq - 10600)*1000;
channel->tone = 1;
} else {
channel->front_param.frequency = (freq - 9750)*1000;
channel->tone = 0;
}
channel->front_param.inversion = INVERSION_AUTO;
/* find out the polarisation */
if(!(field = strsep(&tmp, ":")))return -1;
channel->pol = (field[0] == 'h' ? 0 : 1);
/* satellite number */
if(!(field = strsep(&tmp, ":")))return -1;
channel->sat_no = strtoul(field, NULL, 0);
/* symbol rate */
if(!(field = strsep(&tmp, ":")))return -1;
channel->front_param.u.qpsk.symbol_rate = strtoul(field, NULL, 0) * 1000;
channel->front_param.u.qpsk.fec_inner = FEC_AUTO;
break;
case FE_QAM:
channel->front_param.frequency = freq;
/* find out the inversion */
if(!(field = strsep(&tmp, ":")))return -1;
channel->front_param.inversion = find_param(inversion_list, field);
/* find out the symbol rate */
if(!(field = strsep(&tmp, ":")))return -1;
channel->front_param.u.qam.symbol_rate = strtoul(field, NULL, 0);
/* find out the fec */
if(!(field = strsep(&tmp, ":")))return -1;
channel->front_param.u.qam.fec_inner = find_param(fec_list, field);
/* find out the qam */
if(!(field = strsep(&tmp, ":")))return -1;
channel->front_param.u.qam.modulation = find_param(qam_list, field);
break;
case FE_OFDM:
/* DVB-T frequency is in kHz - workaround broken channels.confs */
if (freq < 1000000)
freq*=1000;
channel->front_param.frequency = freq;
/* find out the inversion */
if(!(field = strsep(&tmp, ":")))return -1;
channel->front_param.inversion = find_param(inversion_list, field);
/* find out the bandwidth */
if(!(field = strsep(&tmp, ":")))return -1;
channel->front_param.u.ofdm.bandwidth = find_param(bw_list, field);
/* find out the fec_hp */
if(!(field = strsep(&tmp, ":")))return -1;
channel->front_param.u.ofdm.code_rate_HP = find_param(fec_list, field);
/* find out the fec_lp */
if(!(field = strsep(&tmp, ":")))return -1;
channel->front_param.u.ofdm.code_rate_LP = find_param(fec_list, field);
/* find out the qam */
if(!(field = strsep(&tmp, ":")))return -1;
channel->front_param.u.ofdm.constellation = find_param(qam_list, field);
/* find out the transmission mode */
if(!(field = strsep(&tmp, ":")))return -1;
channel->front_param.u.ofdm.transmission_mode = find_param(transmissionmode_list, field);
/* guard list */
if(!(field = strsep(&tmp, ":")))return -1;
channel->front_param.u.ofdm.guard_interval = find_param(guard_list, field);
if(!(field = strsep(&tmp, ":")))return -1;
channel->front_param.u.ofdm.hierarchy_information = find_param(hierarchy_list, field);
break;
case FE_ATSC:
channel->front_param.frequency = freq;
/* find out the qam */
if(!(field = strsep(&tmp, ":")))return -1;
channel->front_param.u.vsb.modulation = find_param(atsc_list, field);
break;
}
/* Video PID - not used but we'll take it anyway */
if (!(field = strsep(&tmp, ":")))
return -1;
channel->pid[VIDFILTER] = strtoul(field, NULL, 0);
/* Audio PID - it's only for mpegaudio so we don't use it anymore */
if (!(field = strsep(&tmp, ":")))
return -1;
channel->pid[AUDFILTER] = strtoul(field, NULL, 0);
/* service ID */
if (!(field = strsep(&tmp, ":")))
return -1;
channel->service_id = strtoul(field, NULL, 0);
/* some channel.conf files are generated with the service ID 1 to the right
this needs investigation */
if ((field = strsep(&tmp, ":")))
if(strtoul(field,NULL,0)>0)
channel->service_id = strtoul(field, NULL, 0);
return 0;
}
static int extract_channel_from_string(channel_t *channel, char *str, fe_type_t fe_type)
{
channel->name = NULL;
if (!extract_channel_from_string_internal(channel, str, fe_type))
return 0;
free (channel->name); /* without this, we have a possible memleak */
return -1;
}
static channel_t *load_channels(xine_t *xine, xine_stream_t *stream, int *num_ch, fe_type_t fe_type) {
FILE *f;
char str[BUFSIZE];
char filename[BUFSIZE];
channel_t *channels = NULL;
int num_channels = 0;
int num_alloc = 0;
struct stat st;
snprintf(filename, BUFSIZE, "%s/"PACKAGE"/channels.conf", xdgConfigHome(&xine->basedir_handle));
f = fopen(filename, "r");
if (!f) {
xprintf(xine, XINE_VERBOSITY_LOG, _("input_dvb: failed to open dvb channel file '%s': %s\n"), filename, strerror (errno));
if (!f && stream)
_x_message(stream, XINE_MSG_FILE_NOT_FOUND, filename, "Please run the dvbscan utility.", NULL);
return NULL;
}
if (fstat(fileno(f), &st) || !S_ISREG (st.st_mode)) {
xprintf(xine, XINE_VERBOSITY_LOG, _("input_dvb: dvb channel file '%s' is not a plain file\n"), filename);
fclose(f);
return NULL;
}
/*
* load channel list
*/
while ( fgets (str, BUFSIZE, f)) {
channel_t channel = {0};
/* lose trailing spaces & control characters */
size_t i = strlen (str);
while (i && str[i - 1] <= ' ')
--i;
if (i == 0)
continue;
str[i] = 0;
if (extract_channel_from_string(&channel,str,fe_type) < 0)
continue;
if (num_channels >= num_alloc) {
channel_t *new_channels = calloc((num_alloc += 32), sizeof (channel_t));
_x_assert(new_channels != NULL);
memcpy(new_channels, channels, num_channels * sizeof (channel_t));
free(channels);
channels = new_channels;
}
channels[num_channels] = channel;
/* Initially there's no EPG data in the EPG structs. */
channels[num_channels].epg_count = 0;
memset(channels[num_channels].epg, 0, sizeof(channels[num_channels].epg));
num_channels++;
}
fclose(f);
/* free any trailing unused entries */
channels = realloc (channels, num_channels * sizeof (channel_t));
if(num_channels > 0)
xprintf (xine, XINE_VERBOSITY_DEBUG, "input_dvb: found %d channels...\n", num_channels);
else {
xprintf (xine, XINE_VERBOSITY_DEBUG, "input_dvb: no channels found in the file: giving up.\n");
free(channels);
return NULL;
}
*num_ch = num_channels;
return channels;
}
static void free_channel_list (channel_t *channels, int num_channels)
{
if (channels)
while (--num_channels >= 0)
free(channels[num_channels].name);
free(channels);
}
static int tuner_set_diseqc(tuner_t *this, channel_t *c)
{
struct dvb_diseqc_master_cmd cmd =
{{0xe0, 0x10, 0x38, 0xf0, 0x00, 0x00}, 4};
cmd.msg[3] = 0xf0 | ((c->sat_no * 4) & 0x0f) |
(c->tone ? 1 : 0) | (c->pol ? 0 : 2);
if (ioctl(this->fd_frontend, FE_SET_TONE, SEC_TONE_OFF) < 0)
return 0;
if (ioctl(this->fd_frontend, FE_SET_VOLTAGE,
c->pol ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18) < 0)
return 0;
usleep(15000);
if (ioctl(this->fd_frontend, FE_DISEQC_SEND_MASTER_CMD, &cmd) < 0)
return 0;
usleep(15000);
if (ioctl(this->fd_frontend, FE_DISEQC_SEND_BURST,
(c->sat_no / 4) % 2 ? SEC_MINI_B : SEC_MINI_A) < 0)
return 0;
usleep(15000);
if (ioctl(this->fd_frontend, FE_SET_TONE,
c->tone ? SEC_TONE_ON : SEC_TONE_OFF) < 0)
return 0;
return 1;
}
/* Tune to the requested freq. etc, wait for frontend to lock for a few seconds.
* if frontend can't lock, retire. */
static int tuner_tune_it (tuner_t *this, struct dvb_frontend_parameters
*front_param) {
fe_status_t status = 0;
/* fe_status_t festatus; */
struct dvb_frontend_event event;
unsigned int strength;