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dvbstream (C) Dave Chapman <dave@dchapman.com> 2001, 2002. (C) Rozhuk Ivan <rozhuk.im@gmail.com> 2016 - 2017
Original authors: Nico, probably Arpi
Some code based on dvbstream, 0.4.3-pre3 (CVS checkout), http://sourceforge.net/projects/dvbtools/
Modified for use with MPlayer, for details see the changelog at http://svn.mplayerhq.hu/mplayer/trunk/ $Id$
Copyright notice:
This file is part of mpv.
mpv 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.
mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"#include <stdio.h>#include <stdlib.h>#include <string.h>#include <sys/ioctl.h>#include <sys/time.h>#include <poll.h>#include <unistd.h>#include <fcntl.h>#include <errno.h>
#include "osdep/io.h"#include "misc/ctype.h"#include "osdep/timer.h"
#include "stream.h"#include "common/tags.h"#include "options/m_config.h"#include "options/m_option.h"#include "options/options.h"#include "options/path.h"#include "osdep/io.h"#include "osdep/poll_wrapper.h"#include "osdep/threads.h"
#include "dvbin.h"#include "dvb_tune.h"
#if !HAVE_GPL#error GPL only#endif
#define CHANNEL_LINE_LEN 256
#define OPT_BASE_STRUCT dvb_opts_t
static dvb_state_t *global_dvb_state = NULL;static mp_static_mutex global_dvb_state_lock = MP_STATIC_MUTEX_INITIALIZER;
const struct m_sub_options stream_dvb_conf = { .opts = (const m_option_t[]) { {"prog", OPT_STRING(cfg_prog), .flags = UPDATE_DVB_PROG}, {"card", OPT_INT(cfg_devno), M_RANGE(0, MAX_ADAPTERS-1)}, {"timeout", OPT_FLOAT(cfg_timeout), M_RANGE(0, FLT_MAX)}, {"file", OPT_STRING(cfg_file), .flags = M_OPT_FILE}, {"full-transponder", OPT_BOOL(cfg_full_transponder)}, {"channel-switch-offset", OPT_INT(cfg_channel_switch_offset), .flags = UPDATE_DVB_PROG}, {0} }, .size = sizeof(dvb_opts_t), .defaults = &(const dvb_opts_t){ .cfg_prog = NULL, .cfg_timeout = 30, },};
void dvbin_close(stream_t *stream);
static fe_code_rate_t parse_fec(const char *cr){ if (!strcmp(cr, "FEC_1_2")) { return FEC_1_2; } else if (!strcmp(cr, "FEC_2_3")) { return FEC_2_3; } else if (!strcmp(cr, "FEC_3_4")) { return FEC_3_4; } else if (!strcmp(cr, "FEC_4_5")) { return FEC_4_5; } else if (!strcmp(cr, "FEC_5_6")) { return FEC_5_6; } else if (!strcmp(cr, "FEC_6_7")) { return FEC_6_7; } else if (!strcmp(cr, "FEC_7_8")) { return FEC_7_8; } else if (!strcmp(cr, "FEC_8_9")) { return FEC_8_9; } else if (!strcmp(cr, "FEC_NONE")) { return FEC_NONE; } return FEC_NONE;}
static fe_modulation_t parse_vdr_modulation(const char** modstring){ static const struct { const char *s; fe_modulation_t v; } table[] = { { "16", QAM_16 }, { "32", QAM_32 }, { "64", QAM_64 }, { "128", QAM_128 }, { "256", QAM_256 }, { "998", QAM_AUTO }, { "2", QPSK }, { "5", PSK_8 }, { "6", APSK_16 }, { "7", APSK_32 }, { "10", VSB_8 }, { "11", VSB_16 }, { "12", DQPSK }, }; for (int i = 0; i < MP_ARRAY_SIZE(table); i++) { if (!strncmp(*modstring, table[i].s, strlen(table[i].s))) { *modstring += strlen(table[i].s); return table[i].v; } } return QAM_AUTO;}
static void parse_vdr_par_string(const char *vdr_par_str, dvb_channel_t *ptr){ //FIXME: There is more information in this parameter string, especially related // to non-DVB-S reception. if (!vdr_par_str[0]) return; const char *vdr_par = &vdr_par_str[0]; while (vdr_par && *vdr_par) { switch (mp_toupper(*vdr_par)) { case 'H': ptr->pol = 'H'; vdr_par++; break; case 'V': ptr->pol = 'V'; vdr_par++; break; case 'S': vdr_par++; ptr->is_dvb_x2 = *vdr_par == '1'; vdr_par++; break; case 'P': vdr_par++; char *endptr = NULL; errno = 0; int n = strtol(vdr_par, &endptr, 10); if (!errno && endptr != vdr_par) { ptr->stream_id = n; vdr_par = endptr; } break; case 'I': vdr_par++; ptr->inv = (*vdr_par == '1') ? INVERSION_ON : INVERSION_OFF; vdr_par++; break; case 'M': vdr_par++; ptr->mod = parse_vdr_modulation(&vdr_par); break; default: vdr_par++; } }}
static char *dvb_strtok_r(char *s, const char *sep, char **p){ if (!s && !(s = *p)) return NULL;
/* Skip leading separators. */ s += strspn(s, sep);
/* s points at first non-separator, or end of string. */ if (!*s) return *p = 0;
/* Move *p to next separator. */ *p = s + strcspn(s, sep); if (**p) { *(*p)++ = 0; } else { *p = 0; } return s;}
static bool parse_pid_string(struct mp_log *log, char *pid_string, dvb_channel_t *ptr){ if (!pid_string[0]) return false; int pcnt = 0; /* These tokens also catch vdr-style PID lists. * They can contain 123=deu@3,124=eng+jap@4;125 * 3 and 4 are codes for codec type, =langLeft+langRight is allowed, * and ; may separate a dolby channel. * With the numChars-test and the full token-list, all is handled * gracefully. */ const char *tokens = "+,;"; char *pidPart; char *savePtr = NULL; pidPart = dvb_strtok_r(pid_string, tokens, &savePtr); while (pidPart != NULL) { if (ptr->pids_cnt >= DMX_FILTER_SIZE - 1) { mp_verbose(log, "Maximum number of PIDs for one channel " "reached, ignoring further ones!\n"); break; } int numChars = 0; int pid = 0; pcnt += sscanf(pidPart, "%d%n", &pid, &numChars); if (numChars > 0) { ptr->pids[ptr->pids_cnt] = pid; ptr->pids_cnt++; } pidPart = dvb_strtok_r(NULL, tokens, &savePtr); } return pcnt > 0;}
static dvb_channels_list_t *dvb_get_channels(struct mp_log *log, dvb_channels_list_t *list_add, int cfg_full_transponder, char *filename, unsigned int frontend, int delsys, unsigned int delsys_mask){ dvb_channels_list_t *list = list_add;
if (!filename) return list;
const char *cbl_conf = "%d:%255[^:]:%d:%255[^:]:%255[^:]:%255[^:]:%255[^:]\n"; const char *sat_conf = "%d:%c:%d:%d:%255[^:]:%255[^:]\n"; const char *ter_conf = "%d:%255[^:]:%255[^:]:%255[^:]:%255[^:]:%255[^:]:%255[^:]:%255[^:]:%255[^:]:%255[^:]:%255[^:]\n"; const char *atsc_conf = "%d:%255[^:]:%255[^:]:%255[^:]\n"; const char *vdr_conf = "%d:%255[^:]:%255[^:]:%d:%255[^:]:%255[^:]:%255[^:]:%*255[^:]:%d:%*d:%*d:%*d\n%n";
mp_verbose(log, "Reading config file %s for type %s\n", filename, get_dvb_delsys(delsys)); FILE *f = fopen(filename, "r"); if (!f) { mp_fatal(log, "Can't open file %s\n", filename); return list; }
if (!list) list = talloc_zero(NULL, dvb_channels_list_t);
while (!feof(f)) { char line[CHANNEL_LINE_LEN]; if (!fgets(line, CHANNEL_LINE_LEN, f)) continue;
if (line[0] == '#' || strlen(line) == 0) continue;
dvb_channel_t chn = {0}; dvb_channel_t *ptr = &chn;
char tmp_lcr[256], tmp_hier[256], inv[256], bw[256], cr[256], mod[256], transm[256], gi[256], vpid_str[256], apid_str[256], tpid_str[256], vdr_par_str[256], vdr_loc_str[256];
vpid_str[0] = apid_str[0] = tpid_str[0] = 0; vdr_loc_str[0] = vdr_par_str[0] = 0; tmp_lcr[0] = tmp_hier[0] = inv[0] = bw[0] = 0; cr[0] = mod[0] = transm[0] = gi[0] = 0;
char *colon = strchr(line, ':'); if (!colon) continue; int k = colon - line; if (!k) continue; // In some modern VDR-style configs, channel name also has bouquet after ;. // Parse that off, we ignore it. char *bouquet_sep = strchr(line, ';'); { int namelen = k; if (bouquet_sep && bouquet_sep < colon) namelen = bouquet_sep - line; ptr->name = talloc_strndup(list, line, namelen); }
k++;
ptr->pids_cnt = 0; ptr->freq = 0; ptr->service_id = -1; ptr->is_dvb_x2 = false; ptr->frontend = frontend; ptr->delsys = delsys; ptr->diseqc = 0; ptr->stream_id = NO_STREAM_ID_FILTER; ptr->inv = INVERSION_AUTO; ptr->bw = BANDWIDTH_AUTO; ptr->cr = FEC_AUTO; ptr->cr_lp = FEC_AUTO; ptr->mod = QAM_AUTO; ptr->hier = HIERARCHY_AUTO; ptr->gi = GUARD_INTERVAL_AUTO; ptr->trans = TRANSMISSION_MODE_AUTO;
// Check if VDR-type channels.conf-line - then full line is consumed by the scan. int fields, num_chars = 0; fields = sscanf(&line[k], vdr_conf, &ptr->freq, vdr_par_str, vdr_loc_str, &ptr->srate, vpid_str, apid_str, tpid_str, &ptr->service_id, &num_chars);
bool is_vdr_conf = (num_chars == strlen(&line[k]));
// Special case: DVB-T style ZAP config also has 13 columns. // Most columns should have non-numeric content, but some channel list generators insert 0 // if a value is not used. However, INVERSION_* should always set after frequency. if (is_vdr_conf && !strncmp(vdr_par_str, "INVERSION_", 10)) { is_vdr_conf = false; }
if (is_vdr_conf) { // Modulation parsed here, not via old xine-parsing path. mod[0] = '\0'; // It's a VDR-style config line. parse_vdr_par_string(vdr_par_str, ptr); // Frequency in VDR-style config files is in MHz for DVB-S, // and may be in MHz, kHz or Hz for DVB-C and DVB-T. // General rule to get useful units is to multiply by 1000 until value is larger than 1000000. while (ptr->freq < 1000000U) { ptr->freq *= 1000U; } // Symbol rate in VDR-style config files is divided by 1000. ptr->srate *= 1000U; switch (delsys) { case SYS_DVBT: case SYS_DVBT2: /* Fix delsys value. */ if (ptr->is_dvb_x2) { ptr->delsys = delsys = SYS_DVBT2; } else { ptr->delsys = delsys = SYS_DVBT; } if (!DELSYS_IS_SET(delsys_mask, delsys)) continue; /* Skip channel. */ mp_verbose(log, "VDR, %s, NUM: %d, NUM_FIELDS: %d, NAME: %s, " "FREQ: %d, SRATE: %d, T2: %s\n", get_dvb_delsys(delsys), list->NUM_CHANNELS, fields, ptr->name, ptr->freq, ptr->srate, (delsys == SYS_DVBT2) ? "yes" : "no"); break; case SYS_DVBC_ANNEX_A: case SYS_DVBC_ANNEX_C: case SYS_ATSC: case SYS_DVBC_ANNEX_B: case SYS_ISDBT: mp_verbose(log, "VDR, %s, NUM: %d, NUM_FIELDS: %d, NAME: %s, " "FREQ: %d, SRATE: %d\n", get_dvb_delsys(delsys), list->NUM_CHANNELS, fields, ptr->name, ptr->freq, ptr->srate); break; case SYS_DVBS: case SYS_DVBS2: /* Fix delsys value. */ if (ptr->is_dvb_x2) { ptr->delsys = delsys = SYS_DVBS2; } else { ptr->delsys = delsys = SYS_DVBS; } if (!DELSYS_IS_SET(delsys_mask, delsys)) continue; /* Skip channel. */
if (vdr_loc_str[0]) { // In older vdr config format, this field contained the DISEQc information. // If it is numeric, assume that's it. int diseqc_info = 0; int valid_digits = 0; if (sscanf(vdr_loc_str, "%d%n", &diseqc_info, &valid_digits) == 1) { if (valid_digits == strlen(vdr_loc_str)) { ptr->diseqc = (unsigned int)diseqc_info; if (ptr->diseqc > 4) continue; if (ptr->diseqc > 0) ptr->diseqc--; } } }
mp_verbose(log, "VDR, %s, NUM: %d, NUM_FIELDS: %d, NAME: %s, " "FREQ: %d, SRATE: %d, POL: %c, DISEQC: %d, S2: %s, " "StreamID: %d, SID: %d\n", get_dvb_delsys(delsys), list->NUM_CHANNELS, fields, ptr->name, ptr->freq, ptr->srate, ptr->pol, ptr->diseqc, (delsys == SYS_DVBS2) ? "yes" : "no", ptr->stream_id, ptr->service_id); break; default: break; } } else { // ZAP style channel config file. switch (delsys) { case SYS_DVBT: case SYS_DVBT2: case SYS_ISDBT: fields = sscanf(&line[k], ter_conf, &ptr->freq, inv, bw, cr, tmp_lcr, mod, transm, gi, tmp_hier, vpid_str, apid_str); mp_verbose(log, "%s, NUM: %d, NUM_FIELDS: %d, NAME: %s, FREQ: %d\n", get_dvb_delsys(delsys), list->NUM_CHANNELS, fields, ptr->name, ptr->freq); break; case SYS_DVBC_ANNEX_A: case SYS_DVBC_ANNEX_C: fields = sscanf(&line[k], cbl_conf, &ptr->freq, inv, &ptr->srate, cr, mod, vpid_str, apid_str); mp_verbose(log, "%s, NUM: %d, NUM_FIELDS: %d, NAME: %s, FREQ: %d, " "SRATE: %d\n", get_dvb_delsys(delsys), list->NUM_CHANNELS, fields, ptr->name, ptr->freq, ptr->srate); break; case SYS_ATSC: case SYS_DVBC_ANNEX_B: fields = sscanf(&line[k], atsc_conf, &ptr->freq, mod, vpid_str, apid_str); mp_verbose(log, "%s, NUM: %d, NUM_FIELDS: %d, NAME: %s, FREQ: %d\n", get_dvb_delsys(delsys), list->NUM_CHANNELS, fields, ptr->name, ptr->freq); break; case SYS_DVBS: case SYS_DVBS2: fields = sscanf(&line[k], sat_conf, &ptr->freq, &ptr->pol, &ptr->diseqc, &ptr->srate, vpid_str, apid_str); ptr->pol = mp_toupper(ptr->pol); ptr->freq *= 1000U; ptr->srate *= 1000U; if (ptr->diseqc > 4) continue; if (ptr->diseqc > 0) ptr->diseqc--; mp_verbose(log, "%s, NUM: %d, NUM_FIELDS: %d, NAME: %s, FREQ: %d, " "SRATE: %d, POL: %c, DISEQC: %d\n", get_dvb_delsys(delsys), list->NUM_CHANNELS, fields, ptr->name, ptr->freq, ptr->srate, ptr->pol, ptr->diseqc); break; default: break; } }
if (parse_pid_string(log, vpid_str, ptr)) fields++; if (parse_pid_string(log, apid_str, ptr)) fields++; /* If we do not know the service_id, PMT can not be extracted. Teletext decoding will fail without PMT. */ if (ptr->service_id != -1) { if (parse_pid_string(log, tpid_str, ptr)) fields++; }
if (fields < 2 || ptr->pids_cnt == 0 || ptr->freq == 0 || strlen(ptr->name) == 0) continue;
/* Add some PIDs which are mandatory in DVB, * and contain human-readable helpful data. */
/* This is the STD, the service description table. * It contains service names and such, ffmpeg decodes it. */ ptr->pids[ptr->pids_cnt] = 0x0011; ptr->pids_cnt++;
/* This is the EIT, which contains EPG data. * ffmpeg can not decode it (yet), but e.g. VLC * shows what was recorded. */ ptr->pids[ptr->pids_cnt] = 0x0012; ptr->pids_cnt++;
if (ptr->service_id != -1) { /* We have the PMT-PID in addition. This will be found later, when we tune to the channel. Push back here to create the additional demux. */ ptr->pids[ptr->pids_cnt] = -1; // Placeholder. ptr->pids_cnt++; }
bool has8192 = false, has0 = false; for (int cnt = 0; cnt < ptr->pids_cnt; cnt++) { if (ptr->pids[cnt] == 8192) has8192 = true; if (ptr->pids[cnt] == 0) has0 = true; }
/* 8192 is the pseudo-PID for full TP dump, enforce that if requested. */ if (!has8192 && cfg_full_transponder) has8192 = 1; if (has8192) { ptr->pids[0] = 8192; ptr->pids_cnt = 1; } else if (!has0) { ptr->pids[ptr->pids_cnt] = 0; //PID 0 is the PAT ptr->pids_cnt++; }
mp_verbose(log, " PIDS: "); for (int cnt = 0; cnt < ptr->pids_cnt; cnt++) mp_verbose(log, " %d ", ptr->pids[cnt]); mp_verbose(log, "\n");
switch (delsys) { case SYS_DVBT: case SYS_DVBT2: case SYS_ISDBT: case SYS_DVBC_ANNEX_A: case SYS_DVBC_ANNEX_C: if (!strcmp(inv, "INVERSION_ON")) { ptr->inv = INVERSION_ON; } else if (!strcmp(inv, "INVERSION_OFF")) { ptr->inv = INVERSION_OFF; }
ptr->cr = parse_fec(cr); }
switch (delsys) { case SYS_DVBT: case SYS_DVBT2: case SYS_ISDBT: case SYS_DVBC_ANNEX_A: case SYS_DVBC_ANNEX_C: case SYS_ATSC: case SYS_DVBC_ANNEX_B: if (!strcmp(mod, "QAM_128")) { ptr->mod = QAM_128; } else if (!strcmp(mod, "QAM_256")) { ptr->mod = QAM_256; } else if (!strcmp(mod, "QAM_64")) { ptr->mod = QAM_64; } else if (!strcmp(mod, "QAM_32")) { ptr->mod = QAM_32; } else if (!strcmp(mod, "QAM_16")) { ptr->mod = QAM_16; } else if (!strcmp(mod, "VSB_8") || !strcmp(mod, "8VSB")) { ptr->mod = VSB_8; } else if (!strcmp(mod, "VSB_16") || !strcmp(mod, "16VSB")) { ptr->mod = VSB_16; } }
/* Modulation defines real delsys for ATSC: Terrestrial (VSB) is SYS_ATSC, Cable (QAM) is SYS_DVBC_ANNEX_B. */ if (delsys == SYS_ATSC || delsys == SYS_DVBC_ANNEX_B) { if (ptr->mod == VSB_8 || ptr->mod == VSB_16) { delsys = SYS_ATSC; } else { delsys = SYS_DVBC_ANNEX_B; } if (!DELSYS_IS_SET(delsys_mask, delsys)) continue; /* Skip channel. */ mp_verbose(log, "Switched to delivery system for ATSC: %s (guessed from modulation)\n", get_dvb_delsys(delsys)); }
switch (delsys) { case SYS_DVBT: case SYS_DVBT2: case SYS_ISDBT: if (!strcmp(bw, "BANDWIDTH_5_MHZ")) { ptr->bw = BANDWIDTH_5_MHZ; } else if (!strcmp(bw, "BANDWIDTH_6_MHZ")) { ptr->bw = BANDWIDTH_6_MHZ; } else if (!strcmp(bw, "BANDWIDTH_7_MHZ")) { ptr->bw = BANDWIDTH_7_MHZ; } else if (!strcmp(bw, "BANDWIDTH_8_MHZ")) { ptr->bw = BANDWIDTH_8_MHZ; } else if (!strcmp(bw, "BANDWIDTH_10_MHZ")) { ptr->bw = BANDWIDTH_10_MHZ; }
if (!strcmp(transm, "TRANSMISSION_MODE_2K")) { ptr->trans = TRANSMISSION_MODE_2K; } else if (!strcmp(transm, "TRANSMISSION_MODE_8K")) { ptr->trans = TRANSMISSION_MODE_8K; } else if (!strcmp(transm, "TRANSMISSION_MODE_AUTO")) { ptr->trans = TRANSMISSION_MODE_AUTO; }
if (!strcmp(gi, "GUARD_INTERVAL_1_32")) { ptr->gi = GUARD_INTERVAL_1_32; } else if (!strcmp(gi, "GUARD_INTERVAL_1_16")) { ptr->gi = GUARD_INTERVAL_1_16; } else if (!strcmp(gi, "GUARD_INTERVAL_1_8")) { ptr->gi = GUARD_INTERVAL_1_8; } else if (!strcmp(gi, "GUARD_INTERVAL_1_4")) { ptr->gi = GUARD_INTERVAL_1_4; }
ptr->cr_lp = parse_fec(tmp_lcr);
if (!strcmp(tmp_hier, "HIERARCHY_1")) { ptr->hier = HIERARCHY_1; } else if (!strcmp(tmp_hier, "HIERARCHY_2")) { ptr->hier = HIERARCHY_2; } else if (!strcmp(tmp_hier, "HIERARCHY_4")) { ptr->hier = HIERARCHY_4; } else if (!strcmp(tmp_hier, "HIERARCHY_NONE")) { ptr->hier = HIERARCHY_NONE; } }
MP_TARRAY_APPEND(list, list->channels, list->NUM_CHANNELS, *ptr); }
fclose(f); if (list->NUM_CHANNELS == 0) TA_FREEP(&list);
return list;}
static int dvb_streaming_read(stream_t *stream, void *buffer, int size){ dvb_priv_t *priv = stream->priv; dvb_state_t *state = priv->state; int pos = 0; int tries = state->retry; const int fd = state->dvr_fd;
MP_TRACE(stream, "dvb_streaming_read(%d)\n", size);
struct pollfd pfds[1]; pfds[0].fd = fd; pfds[0].events = POLLIN | POLLPRI;
while (pos < size) { int rk = read(fd, (char *)buffer + pos, (size - pos)); if (rk <= 0) { if (pos || tries == 0) break; tries--; if (mp_poll(pfds, 1, MP_TIME_S_TO_NS(2)) <= 0) { MP_ERR(stream, "dvb_streaming_read: failed with " "errno %d when reading %d bytes\n", errno, size - pos); errno = 0; break; } continue; } pos += rk; MP_TRACE(stream, "got %d bytes\n", pos); }
if (!pos) MP_ERR(stream, "dvb_streaming_read: returning 0 bytes\n");
// Check if config parameters have been updated. dvb_update_config(stream);
return pos;}
int dvb_set_channel(stream_t *stream, unsigned int adapter, unsigned int n){ dvb_priv_t *priv = stream->priv; dvb_state_t *state = priv->state;
mp_assert(adapter < state->adapters_count); int devno = state->adapters[adapter].devno; dvb_channels_list_t *new_list = state->adapters[adapter].list; mp_assert(n < new_list->NUM_CHANNELS); dvb_channel_t *channel = &(new_list->channels[n]);
if (state->is_on) { //the fds are already open and we have to stop the demuxers /* Remove all demuxes. */ dvb_fix_demuxes(priv, 0);
state->retry = 0; // empty both the stream's and driver's buffer char buf[4096]; while (dvb_streaming_read(stream, buf, sizeof(buf)) > 0) {}
if (state->cur_adapter != adapter || state->cur_frontend != channel->frontend) { dvbin_close(stream); if (!dvb_open_devices(priv, devno, channel->frontend, channel->pids_cnt)) { MP_ERR(stream, "dvb_set_channel: couldn't open devices of adapter " "%d\n", devno); return 0; } } else { // close all demux_fds with pos > pids required for the new channel // or open other demux_fds if we have too few if (!dvb_fix_demuxes(priv, channel->pids_cnt)) return 0; } } else { if (!dvb_open_devices(priv, devno, channel->frontend, channel->pids_cnt)) { MP_ERR(stream, "dvb_set_channel: couldn't open devices of adapter " "%d\n", devno); return 0; } }
state->retry = 5; new_list->current = n; MP_VERBOSE(stream, "dvb_set_channel: new channel name=\"%s\", adapter: %d, " "channel: %d\n", channel->name, devno, n);
if (channel->freq != state->last_freq) { if (!dvb_tune(priv, channel->delsys, channel->freq, channel->pol, channel->srate, channel->diseqc, channel->stream_id, channel->inv, channel->mod, channel->gi, channel->trans, channel->bw, channel->cr, channel->cr_lp, channel->hier, priv->opts->cfg_timeout)) return 0; }
state->is_on = true; state->last_freq = channel->freq; state->cur_adapter = adapter; state->cur_frontend = channel->frontend;
if (channel->service_id != -1) { /* We need the PMT-PID in addition. If it has not yet beem resolved, do it now. */ for (int i = 0; i < channel->pids_cnt; i++) { if (channel->pids[i] == -1) { MP_VERBOSE(stream, "dvb_set_channel: PMT-PID for service %d " "not resolved yet, parsing PAT...\n", channel->service_id); int pmt_pid = dvb_get_pmt_pid(priv, adapter, channel->service_id); MP_VERBOSE(stream, "found PMT-PID: %d\n", pmt_pid); channel->pids[i] = pmt_pid; break; } } }
// sets demux filters and restart the stream for (int i = 0; i < channel->pids_cnt; i++) { if (channel->pids[i] == -1) { // In case PMT was not resolved, skip it here. MP_ERR(stream, "dvb_set_channel: PMT-PID not found, " "teletext decoding may fail.\n"); continue; } if (!dvb_set_ts_filt(priv, state->demux_fds[i], channel->pids[i], DMX_PES_OTHER)) return 0; }
return 1;}
static int dvbin_stream_control(struct stream *s, int cmd, void *arg){ dvb_priv_t *priv = s->priv; dvb_state_t *state = priv->state;
if (state->cur_adapter >= state->adapters_count) return STREAM_ERROR; dvb_channels_list_t *list = state->adapters[state->cur_adapter].list;
switch (cmd) { case STREAM_CTRL_GET_METADATA: { struct mp_tags *metadata = talloc_zero(NULL, struct mp_tags); char *progname = list->channels[list->current].name; mp_tags_set_str(metadata, "title", progname); *(struct mp_tags **)arg = metadata; return STREAM_OK; } } return STREAM_UNSUPPORTED;}
void dvbin_close(stream_t *stream){ dvb_priv_t *priv = stream->priv; dvb_state_t *state = priv->state;
if (state->switching_channel && state->is_on) { // Prevent state destruction, reset channel-switch. state->switching_channel = false; mp_mutex_lock(&global_dvb_state_lock); global_dvb_state->stream_used = false; mp_mutex_unlock(&global_dvb_state_lock); return; }
for (int i = state->demux_fds_cnt - 1; i >= 0; i--) { state->demux_fds_cnt--; close(state->demux_fds[i]); } close(state->dvr_fd); close(state->fe_fd); state->fe_fd = state->dvr_fd = -1;
state->is_on = false; state->cur_adapter = -1; state->cur_frontend = -1;
mp_mutex_lock(&global_dvb_state_lock); TA_FREEP(&global_dvb_state); mp_mutex_unlock(&global_dvb_state_lock);}
static int dvb_streaming_start(stream_t *stream, char *progname){ dvb_priv_t *priv = stream->priv; dvb_state_t *state = priv->state;
if (!progname) return 0;
dvb_channels_list_t *list = state->adapters[state->cur_adapter].list; dvb_channel_t *channel = NULL; int i; for (i = 0; i < list->NUM_CHANNELS; i ++) { if (!strcmp(list->channels[i].name, progname)) { channel = &(list->channels[i]); break; } }
if (!channel) { MP_ERR(stream, "no such channel \"%s\"\n", progname); return 0; } list->current = i;
// When switching channels, cfg_channel_switch_offset // keeps the offset to the initially chosen channel. list->current = (list->NUM_CHANNELS + list->current + priv->opts->cfg_channel_switch_offset) % list->NUM_CHANNELS; channel = &(list->channels[list->current]); MP_INFO(stream, "Tuning to channel \"%s\"...\n", channel->name); MP_VERBOSE(stream, "Program number %d: name=\"%s\", freq=%u\n", i, channel->name, channel->freq);
if (!dvb_set_channel(stream, state->cur_adapter, list->current)) { dvbin_close(stream); return 0; }
return 1;}
void dvb_update_config(stream_t *stream){ dvb_priv_t *priv = stream->priv; dvb_state_t *state = priv->state;
// Throttle the check to at maximum once every 0.1 s. int now = (int)(mp_time_sec()*10); if (now == priv->opts_check_time) return; priv->opts_check_time = now;
if (!m_config_cache_update(priv->opts_cache)) return;
// Re-parse stream path, if we have cfg parameters now, // these should be preferred. if (!dvb_parse_path(stream)) { MP_ERR(stream, "error parsing DVB config, not tuning."); return; }
int r = dvb_streaming_start(stream, priv->prog); if (r) { // Stream will be pulled down after channel switch, // persist state. state->switching_channel = true; }}
static int dvb_open(stream_t *stream){ dvb_priv_t *priv = NULL;
mp_mutex_lock(&global_dvb_state_lock); if (global_dvb_state && global_dvb_state->stream_used) { MP_ERR(stream, "DVB stream already in use, only one DVB stream can exist at a time!\n"); mp_mutex_unlock(&global_dvb_state_lock); goto err_out; }
// Need to re-get config in any case, not part of global state. stream->priv = talloc_zero(stream, dvb_priv_t); priv = stream->priv; priv->opts_cache = m_config_cache_alloc(stream, stream->global, &stream_dvb_conf); priv->opts = priv->opts_cache->opts;
dvb_state_t *state = dvb_get_state(stream);
priv->state = state; priv->log = stream->log; if (!state) { MP_ERR(stream, "DVB configuration is empty\n"); mp_mutex_unlock(&global_dvb_state_lock); goto err_out; }
if (!dvb_parse_path(stream)) { mp_mutex_unlock(&global_dvb_state_lock); goto err_out; }
state->stream_used = true; mp_mutex_unlock(&global_dvb_state_lock);
if (!state->is_on) { // State could be already initialized, for example, we just did a channel switch. // The following setup only has to be done once.
state->cur_frontend = -1;
if (!dvb_streaming_start(stream, priv->prog)) goto err_out; }
stream->fill_buffer = dvb_streaming_read; stream->close = dvbin_close; stream->control = dvbin_stream_control; stream->streaming = true; stream->demuxer = "lavf"; stream->lavf_type = "mpegts";
return STREAM_OK;
err_out: talloc_free(priv); stream->priv = NULL; return STREAM_ERROR;}
int dvb_parse_path(stream_t *stream){ dvb_priv_t *priv = stream->priv; dvb_state_t *state = priv->state;
// Parse stream path. Common rule: cfg wins over stream path, // since cfg may be changed at runtime. bstr prog, devno; if (!bstr_split_tok(bstr0(stream->path), "@", &devno, &prog)) { prog = devno; devno.len = 0; }
if (priv->opts->cfg_devno != 0) { priv->devno = priv->opts->cfg_devno; } else if (devno.len) { bstr r; priv->devno = bstrtoll(devno, &r, 0); if (r.len || priv->devno < 0 || priv->devno >= MAX_ADAPTERS) { MP_ERR(stream, "invalid devno: '%.*s'\n", BSTR_P(devno)); return 0; } } else { // Default to the default of cfg_devno. priv->devno = priv->opts->cfg_devno; }
// Current adapter is derived from devno. state->cur_adapter = -1; for (int i = 0; i < state->adapters_count; i++) { if (state->adapters[i].devno == priv->devno) { state->cur_adapter = i; break; } }
if (state->cur_adapter == -1) { MP_ERR(stream, "No configuration found for adapter %d!\n", priv->devno); return 0; }
char *new_prog = NULL; if (priv->opts->cfg_prog != NULL && strlen(priv->opts->cfg_prog) > 0) { new_prog = talloc_strdup(priv, priv->opts->cfg_prog); } else if (prog.len) { new_prog = bstrto0(priv, prog); } else { // We use the first program from the channel list. dvb_channels_list_t *list = state->adapters[state->cur_adapter].list; if (!list) { MP_ERR(stream, "No channel list available for adapter %d!\n", priv->devno); return 0; } new_prog = talloc_strdup(priv, list->channels[0].name); } talloc_free(priv->prog); priv->prog = new_prog;
MP_VERBOSE(stream, "dvb_config: prog=\"%s\", devno=%d\n", priv->prog, priv->devno); return 1;}
dvb_state_t *dvb_get_state(stream_t *stream){ dvb_priv_t *priv = stream->priv; if (global_dvb_state) return global_dvb_state;
struct mp_log *log = stream->log; struct mpv_global *global = stream->global;
dvb_state_t *state = talloc_zero(NULL, dvb_state_t); state->switching_channel = false; state->is_on = false; state->stream_used = true; state->fe_fd = state->dvr_fd = -1;
for (unsigned int i = 0; i < MAX_ADAPTERS; i++) { dvb_channels_list_t *list = NULL; unsigned int delsys_mask[MAX_FRONTENDS]; for (unsigned int f = 0; f < MAX_FRONTENDS; f++) { char filename[100]; snprintf(filename, sizeof(filename), "/dev/dvb/adapter%u/frontend%u", i, f); int fd = open(filename, O_RDONLY | O_NONBLOCK | O_CLOEXEC); if (fd < 0) continue;
delsys_mask[f] = dvb_get_tuner_delsys_mask(fd, log); delsys_mask[f] &= DELSYS_SUPP_MASK; /* Filter unsupported delivery systems. */ close(fd); if (delsys_mask[f] == 0) { mp_verbose(log, "Frontend device %s has no supported delivery systems.\n", filename); continue; /* Skip tuner. */ }
/* Create channel list for adapter. */ for (unsigned int delsys = 0; delsys < SYS_DVB__COUNT__; delsys++) { if (!DELSYS_IS_SET(delsys_mask[f], delsys)) continue; /* Skip unsupported. */
mp_verbose(log, "Searching channel list for delivery system %s\n", get_dvb_delsys(delsys)); const char *conf_file_name; switch (delsys) { case SYS_DVBC_ANNEX_A: case SYS_DVBC_ANNEX_C: conf_file_name = "channels.conf.cbl"; break; case SYS_ATSC: conf_file_name = "channels.conf.atsc"; break; case SYS_DVBT: if (DELSYS_IS_SET(delsys_mask[f], SYS_DVBT2)) { // only if ter1 is present, interpret as DVB-T, else will be loaded as DVB-T2 conf_file_name = "channels.conf.ter1"; } else { conf_file_name = "channels.conf.ter"; } break; case SYS_DVBT2: conf_file_name = "channels.conf.ter"; break; case SYS_ISDBT: conf_file_name = "channels.conf.isdbt"; break; case SYS_DVBS: if (DELSYS_IS_SET(delsys_mask[f], SYS_DVBS2)) { // only if sat1 is present, interpret as DVB-S, else will be loaded as DVB-S2 conf_file_name = "channels.conf.sat1"; } else { conf_file_name = "channels.conf.sat"; } break; case SYS_DVBS2: conf_file_name = "channels.conf.sat"; break; default: continue; }
void *talloc_ctx = talloc_new(NULL); char *conf_file; if (priv->opts->cfg_file && priv->opts->cfg_file[0]) { conf_file = mp_get_user_path(talloc_ctx, global, priv->opts->cfg_file); } else { conf_file = mp_find_config_file(talloc_ctx, global, conf_file_name); if (conf_file) { mp_verbose(log, "Ignoring other channels.conf files.\n"); } else { conf_file = mp_find_config_file(talloc_ctx, global, "channels.conf"); } }
list = dvb_get_channels(log, list, priv->opts->cfg_full_transponder, conf_file, f, delsys, delsys_mask[f]); talloc_free(talloc_ctx); } } /* Add adapter with non zero channel list. */ if (!list) continue;
dvb_adapter_config_t tmp = { .devno = i, .list = talloc_steal(state, list), }; memcpy(&tmp.delsys_mask, delsys_mask, sizeof(delsys_mask));
MP_TARRAY_APPEND(state, state->adapters, state->adapters_count, tmp);
mp_verbose(log, "Added adapter with channels to state list, now %d.\n", state->adapters_count); }
if (state->adapters_count == 0) TA_FREEP(&state);
global_dvb_state = state; return state;}
const stream_info_t stream_info_dvb = { .name = "dvbin", .open = dvb_open, .protocols = (const char *const[]){ "dvb", NULL }, .stream_origin = STREAM_ORIGIN_UNSAFE,};