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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 program 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.
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 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 02110-1301 USA
*/
#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 <pthread.h>
#include <libavutil/avstring.h>
#include "osdep/io.h"#include "misc/ctype.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 "dvbin.h"#include "dvb_tune.h"
#if !HAVE_GPL#error GPL only#endif
#define CHANNEL_LINE_LEN 256#define min(a, b) ((a) <= (b) ? (a) : (b))
#define OPT_BASE_STRUCT dvb_priv_t
static dvb_state_t *global_dvb_state = NULL;static pthread_mutex_t global_dvb_state_lock = PTHREAD_MUTEX_INITIALIZER;
const struct m_sub_options stream_dvb_conf = { .opts = (const m_option_t[]) { OPT_STRING("prog", cfg_prog, 0), OPT_INTRANGE("card", cfg_devno, 0, 1, 4), OPT_INTRANGE("timeout", cfg_timeout, 0, 1, 30), OPT_STRING("file", cfg_file, M_OPT_FILE), OPT_FLAG("full-transponder", cfg_full_transponder, 0), {0} }, .size = sizeof(dvb_priv_t), .defaults = &(const dvb_priv_t){ .cfg_prog = NULL, .cfg_devno = 0, .cfg_timeout = 30, },};
void dvbin_close(stream_t *stream);
static fe_modulation_t parse_vdr_modulation(const char** modstring) { if (!strncmp(*modstring, "16", 2)) { (*modstring)+=2; return QAM_16; } else if (!strncmp(*modstring, "32", 2)) { (*modstring)+=2; return QAM_32; } else if (!strncmp(*modstring, "64", 2)) { (*modstring)+=2; return QAM_64; } else if (!strncmp(*modstring, "128", 3)) { (*modstring)+=3; return QAM_128; } else if (!strncmp(*modstring, "256", 3)) { (*modstring)+=3; return QAM_256; } else if (!strncmp(*modstring, "998", 3)) { (*modstring)+=3; return QAM_AUTO; } else if (!strncmp(*modstring, "2", 1)) { (*modstring)++; return QPSK; } else if (!strncmp(*modstring, "5", 1)) { (*modstring)++; return PSK_8; } else if (!strncmp(*modstring, "6", 1)) { (*modstring)++; return APSK_16; } else if (!strncmp(*modstring, "7", 1)) { (*modstring)++; return APSK_32; } else if (!strncmp(*modstring, "10", 2)) { (*modstring)+=2; return VSB_8; } else if (!strncmp(*modstring, "11", 2)) { (*modstring)+=2; return VSB_16; } else if (!strncmp(*modstring, "12", 2)) { (*modstring)+=2; return DQPSK; } else { 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]) { 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++; if (*vdr_par == '1') { ptr->is_dvb_x2 = true; } else { ptr->is_dvb_x2 = false; } 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++; if (*vdr_par == '1') { ptr->inv = INVERSION_ON; } else { ptr->inv = 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]) { 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"); return pcnt > 0; } 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); } if (pcnt > 0) return true; } return false;}
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; FILE *f; char line[CHANNEL_LINE_LEN], *colon;
if (!filename) return NULL;
int fields, cnt, k; int has8192, has0; dvb_channel_t *ptr, *tmp, 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]; 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";#ifdef DVB_ATSC const char *atsc_conf = "%d:%255[^:]:%255[^:]:%255[^:]\n";#endif const char *vdr_conf = "%d:%255[^:]:%255[^:]:%d:%255[^:]:%255[^:]:%255[^:]:%*255[^:]:%d:%*d:%*d:%*d\n%n";
mp_verbose(log, "CONFIG_READ FILE: %s, type: %s\n", filename, get_dvb_delsys(delsys)); if ((f = fopen(filename, "r")) == NULL) { mp_fatal(log, "CAN'T READ CONFIG FILE %s\n", filename); return NULL; }
if (list == NULL) { list = malloc(sizeof(dvb_channels_list_t)); if (list == NULL) { fclose(f); mp_verbose(log, "DVB_GET_CHANNELS: couldn't malloc enough memory\n"); return NULL; } memset(list, 0x00, sizeof(dvb_channels_list_t)); }
ptr = &chn; while (!feof(f)) { if (fgets(line, CHANNEL_LINE_LEN, f) == NULL) continue;
if ((line[0] == '#') || (strlen(line) == 0)) continue;
memset(ptr, 0x00, sizeof(dvb_channel_t)); vpid_str[0] = apid_str[0] = tpid_str[0] = 0; vdr_loc_str[0] = vdr_par_str[0] = 0;
colon = strchr(line, ':'); if (colon) { 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 channel_name_length = k; if (bouquet_sep && bouquet_sep < colon) channel_name_length = (bouquet_sep - line); ptr->name = malloc((channel_name_length + 1)); if (!ptr->name) continue; av_strlcpy(ptr->name, line, (channel_name_length + 1)); } else { continue; } 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 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);
if (num_chars == strlen(&line[k])) { // 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); // Units in VDR-style config files are divided by 1000. ptr->freq *= 1000UL; ptr->srate *= 1000UL; 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. */ /* PASSTROUTH */ case SYS_DVBC_ANNEX_A: case SYS_DVBC_ANNEX_C: case SYS_ATSC: case SYS_DVBC_ANNEX_B: mp_verbose(log, "VDR, %s, NUM: %d, NUM_FIELDS: %d, NAME: %s, " "FREQ: %d, SRATE: %d", 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, "%s NUM: %d, NUM_FIELDS: %d, NAME: %s, " "FREQ: %d, SRATE: %d, POL: %c, DISEQC: %d, S2: %s, " "StreamID: %d, SID: %d", 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 { switch (delsys) { case SYS_DVBT: case SYS_DVBT2: 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", 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", get_dvb_delsys(delsys), list->NUM_CHANNELS, fields, ptr->name, ptr->freq, ptr->srate); break;#ifdef DVB_ATSC 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;#endif 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 *= 1000UL; ptr->srate *= 1000UL; 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", 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++; }
has8192 = has0 = 0; for (cnt = 0; cnt < ptr->pids_cnt; cnt++) { if (ptr->pids[cnt] == 8192) has8192 = 1; if (ptr->pids[cnt] == 0) has0 = 1; }
/* 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 (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_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; }
if (!strcmp(cr, "FEC_1_2")) { ptr->cr = FEC_1_2; } else if (!strcmp(cr, "FEC_2_3")) { ptr->cr = FEC_2_3; } else if (!strcmp(cr, "FEC_3_4")) { ptr->cr = FEC_3_4; } else if (!strcmp(cr, "FEC_4_5")) { ptr->cr = FEC_4_5; } else if (!strcmp(cr, "FEC_6_7")) { ptr->cr = FEC_6_7; } else if (!strcmp(cr, "FEC_8_9")) { ptr->cr = FEC_8_9; } else if (!strcmp(cr, "FEC_5_6")) { ptr->cr = FEC_5_6; } else if (!strcmp(cr, "FEC_7_8")) { ptr->cr = FEC_7_8; } else if (!strcmp(cr, "FEC_NONE")) { ptr->cr = FEC_NONE; } }
switch (delsys) { case SYS_DVBT: case SYS_DVBT2: 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;#ifdef DVB_ATSC } 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;#endif } }#ifdef DVB_ATSC /* 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)); }#endif
switch (delsys) { case SYS_DVBT: case SYS_DVBT2: 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; }
if (!strcmp(tmp_lcr, "FEC_1_2")) { ptr->cr_lp = FEC_1_2; } else if (!strcmp(tmp_lcr, "FEC_2_3")) { ptr->cr_lp = FEC_2_3; } else if (!strcmp(tmp_lcr, "FEC_3_4")) { ptr->cr_lp = FEC_3_4; } else if (!strcmp(tmp_lcr, "FEC_4_5")) { ptr->cr_lp = FEC_4_5; } else if (!strcmp(tmp_lcr, "FEC_6_7")) { ptr->cr_lp = FEC_6_7; } else if (!strcmp(tmp_lcr, "FEC_8_9")) { ptr->cr_lp = FEC_8_9; } else if (!strcmp(tmp_lcr, "FEC_5_6")) { ptr->cr_lp = FEC_5_6; } else if (!strcmp(tmp_lcr, "FEC_7_8")) { ptr->cr_lp = FEC_7_8; } else if (!strcmp(tmp_lcr, "FEC_NONE")) { ptr->cr_lp = FEC_NONE; }
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; } }
tmp = realloc(list->channels, sizeof(dvb_channel_t) * (list->NUM_CHANNELS + 1)); if (tmp == NULL) break;
list->channels = tmp; memcpy(&(list->channels[list->NUM_CHANNELS]), ptr, sizeof(dvb_channel_t)); list->NUM_CHANNELS++; if (sizeof(dvb_channel_t) * list->NUM_CHANNELS >= 1024 * 1024) { mp_verbose(log, "dvbin.c, > 1MB allocated for channels struct, " "dropping the rest of the file\n"); break; } }
fclose(f); if (list->NUM_CHANNELS == 0) { free(list->channels); free(list); return NULL; }
return list;}
void dvb_free_state(dvb_state_t *state){ int i, j;
for (i = 0; i < state->adapters_count; i++) { if (!state->adapters[i].list) continue; if (state->adapters[i].list->channels) { for (j = 0; j < state->adapters[i].list->NUM_CHANNELS; j++) free(state->adapters[i].list->channels[j].name); free(state->adapters[i].list->channels); } free(state->adapters[i].list); } free(state);}
static int dvb_streaming_read(stream_t *stream, char *buffer, int size){ struct pollfd pfds[1]; int pos = 0, tries, rk, fd; dvb_priv_t *priv = (dvb_priv_t *) stream->priv; dvb_state_t *state = priv->state;
MP_TRACE(stream, "dvb_streaming_read(%d)\n", size);
tries = state->retry; fd = state->dvr_fd; while (pos < size) { rk = read(fd, &buffer[pos], (size - pos)); if (rk <= 0) { if (pos || tries == 0) break; tries --; pfds[0].fd = fd; pfds[0].events = POLLIN | POLLPRI; if (poll(pfds, 1, 500) <= 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, "ret (%d) bytes\n", pos); }
if (!pos) MP_ERR(stream, "dvb_streaming_read, return 0 bytes\n");
return pos;}
int dvb_set_channel(stream_t *stream, unsigned int adapter, unsigned int n){ dvb_channels_list_t *new_list; dvb_channel_t *channel; dvb_priv_t *priv = stream->priv; char buf[4096]; dvb_state_t *state = (dvb_state_t *) priv->state; int devno; int i;
if (adapter >= state->adapters_count) { MP_ERR(stream, "dvb_set_channel: INVALID internal ADAPTER NUMBER: %d vs %d, abort\n", adapter, state->adapters_count); return 0; }
devno = state->adapters[adapter].devno; new_list = state->adapters[adapter].list; if (n > new_list->NUM_CHANNELS) { MP_ERR(stream, "dvb_set_channel: INVALID CHANNEL NUMBER: %d, for " "adapter %d, abort\n", n, devno); return 0; } 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 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, EXIT\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_CHANNEL2, COULDN'T OPEN DEVICES OF " "ADAPTER: %d, EXIT\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);
stream_drop_buffers(stream);
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->cfg_timeout)) return 0; }
state->is_on = 1; 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 (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, "DVB_SET_CHANNEL: Found PMT-PID: %d\n", pmt_pid); channel->pids[i] = pmt_pid; } } }
// sets demux filters and restart the stream for (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"); } else { if (!dvb_set_ts_filt(priv, state->demux_fds[i], channel->pids[i], DMX_PES_OTHER)) return 0; } }
return 1;}
int dvb_step_channel(stream_t *stream, int dir){ unsigned int new_current; dvb_priv_t *priv = stream->priv; dvb_state_t *state = priv->state; dvb_channels_list_t *list = state->adapters[state->cur_adapter].list;
MP_VERBOSE(stream, "DVB_STEP_CHANNEL dir %d\n", dir);
if (list == NULL) { MP_ERR(stream, "dvb_step_channel: NULL list_ptr, quit\n"); return 0; }
new_current = (list->NUM_CHANNELS + list->current + (dir >= 0 ? 1 : -1)) % list->NUM_CHANNELS;
return dvb_set_channel(stream, state->cur_adapter, new_current);}
static int dvbin_stream_control(struct stream *s, int cmd, void *arg){ int r; dvb_priv_t *priv = (dvb_priv_t *) s->priv; dvb_state_t *state = priv->state; dvb_channels_list_t *list = NULL;
switch (cmd) { case STREAM_CTRL_DVB_SET_CHANNEL: { unsigned int *iarg = arg; MP_VERBOSE(s, "dvbin_stream_control: cmd STREAM_CTRL_DVB_SET_CHANNEL: %i, %i\n", iarg[1], iarg[0]); r = dvb_set_channel(s, iarg[1], iarg[0]); if (r) { // Stream will be pulled down after channel switch, // persist state. state->switching_channel = true; return STREAM_OK; } return STREAM_ERROR; } case STREAM_CTRL_DVB_STEP_CHANNEL: { MP_VERBOSE(s, "dvbin_stream_control: cmd STREAM_CTRL_DVB_STEP_CHANNEL: %i\n", (*(int *)arg)); r = dvb_step_channel(s, (*(int *)arg)); if (r) { // Stream will be pulled down after channel switch, // persist state. state->switching_channel = true; return STREAM_OK; } return STREAM_ERROR; } }
if (state->cur_adapter >= state->adapters_count) return STREAM_ERROR; list = state->adapters[state->cur_adapter].list;
switch (cmd) { case STREAM_CTRL_GET_TV_FREQ: (*(unsigned int*)arg) = list->channels[list->current].freq; return STREAM_ERROR; case STREAM_CTRL_DVB_SET_CHANNEL_NAME: { char *progname = *((char**)arg); unsigned int new_channel = (~(unsigned int)0); MP_VERBOSE(s, "dvbin_stream_control: cmd STREAM_CTRL_DVB_SET_CHANNEL_NAME: %s\n", progname); for (unsigned int i=0; i < list->NUM_CHANNELS; ++i) { if (!strcmp(list->channels[i].name, progname)) { new_channel = i; break; } } if (new_channel == -1) { MP_ERR(s, "Program '%s' not found for adapter %d!\n", progname, state->adapters[state->cur_adapter].devno); return STREAM_ERROR; } r = dvb_set_channel(s, state->cur_adapter, new_channel); if (r) { // Stream will be pulled down after channel switch, // persist state. state->switching_channel = true; return STREAM_OK; } return STREAM_ERROR; } case STREAM_CTRL_DVB_GET_CHANNEL_NAME: { MP_VERBOSE(s, "dvbin_stream_control: cmd STREAM_CTRL_DVB_GET_CHANNEL_NAME\n"); char *progname = list->channels[list->current].name; *(char **)arg = talloc_strdup(NULL, progname); return STREAM_OK; } 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 = (dvb_priv_t *) 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; pthread_mutex_lock(&global_dvb_state_lock); global_dvb_state->stream_used = false; pthread_mutex_unlock(&global_dvb_state_lock); return; }
for (int i = state->demux_fds_cnt - 1; i >= 0; i--) { state->demux_fds_cnt--; MP_VERBOSE(stream, "DVBIN_CLOSE, close(%d), fd=%d, COUNT=%d\n", i, state->demux_fds[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 = 0; state->cur_adapter = -1; state->cur_frontend = -1;
pthread_mutex_lock(&global_dvb_state_lock); dvb_free_state(state); global_dvb_state = NULL; pthread_mutex_unlock(&global_dvb_state_lock);}
static int dvb_streaming_start(stream_t *stream, char *progname){ int i; dvb_channel_t *channel = NULL; dvb_priv_t *priv = stream->priv; dvb_state_t *state = priv->state; dvb_channels_list_t *list;
if (progname == NULL) return 0; MP_VERBOSE(stream, "\r\ndvb_streaming_start(PROG: %s, ADAPTER: %d)\n", progname, priv->cfg_devno);
state->is_on = 0; list = state->adapters[state->cur_adapter].list; for (i = 0; i < list->NUM_CHANNELS; i ++) { if (!strcmp(list->channels[i].name, progname)) { channel = &(list->channels[i]); break; } }
if (channel == NULL) { MP_ERR(stream, "\n\nDVBIN: no such channel \"%s\"\n\n", progname); return 0; }
list->current = i; 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)) { MP_ERR(stream, "ERROR, COULDN'T SET CHANNEL %i: \"%s\"\n", list->current, progname); dvbin_close(stream); return 0; }
MP_VERBOSE(stream, "SUCCESSFUL EXIT from dvb_streaming_start\n");
return 1;}
static int dvb_open(stream_t *stream){ // I don't force the file format because, although it's almost always TS, // there are some providers that stream an IP multicast with M$ Mpeg4 inside dvb_priv_t *priv = NULL; char *progname; int i;
pthread_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"); pthread_mutex_unlock(&global_dvb_state_lock); goto err_out; }
// Need to re-get config in any case, not part of global state. stream->priv = mp_get_config_group(stream, stream->global, &stream_dvb_conf); dvb_state_t *state = dvb_get_state(stream);
priv = stream->priv; priv->state = state; priv->log = stream->log; if (state == NULL) { MP_ERR(stream, "DVB CONFIGURATION IS EMPTY, exit\n"); pthread_mutex_unlock(&global_dvb_state_lock); goto err_out; } state->stream_used = true; pthread_mutex_unlock(&global_dvb_state_lock);
if (state->is_on != 1) { // State could be already initialized, for example, we just did a channel switch. // The following setup only has to be done once.
state->cur_adapter = -1; state->cur_frontend = -1; for (i = 0; i < state->adapters_count; i++) { if (state->adapters[i].devno == priv->cfg_devno) { state->cur_adapter = i; break; } }
if (state->cur_adapter == -1) { MP_ERR(stream, "NO CONFIGURATION FOUND FOR ADAPTER N. %d, exit\n", priv->cfg_devno); goto err_out; } state->timeout = priv->cfg_timeout;
MP_VERBOSE(stream, "OPEN_DVB: prog=%s, devno=%d\n", priv->cfg_prog, state->adapters[state->cur_adapter].devno);
if ((priv->cfg_prog == NULL || priv->cfg_prog[0] == 0) && state->adapters[state->cur_adapter].list != NULL) { progname = state->adapters[state->cur_adapter].list->channels[0].name; } else { progname = priv->cfg_prog; }
if (!dvb_streaming_start(stream, progname)) goto err_out; }
stream->fill_buffer = dvb_streaming_read; stream->close = dvbin_close; stream->control = dvbin_stream_control; stream->streaming = true; stream->allow_caching = true; stream->demuxer = "lavf"; stream->lavf_type = "mpegts";
return STREAM_OK;
err_out: talloc_free(priv); stream->priv = NULL; return STREAM_ERROR;}
dvb_state_t *dvb_get_state(stream_t *stream){ if (global_dvb_state != NULL) { return global_dvb_state; } struct mp_log *log = stream->log; struct mpv_global *global = stream->global; dvb_priv_t *priv = stream->priv; unsigned int delsys, delsys_mask[MAX_FRONTENDS], size; char filename[PATH_MAX], *conf_file; const char *conf_file_name; void *talloc_ctx; dvb_channels_list_t *list; dvb_adapter_config_t *adapters = NULL, *tmp; dvb_state_t *state = NULL; bstr prog, devno;
if (!bstr_split_tok(bstr0(stream->path), "@", &devno, &prog)) { prog = devno; devno.len = 0; } if (prog.len) { talloc_free(priv->cfg_prog); priv->cfg_prog = bstrto0(NULL, prog); } if (devno.len) { bstr r; priv->cfg_devno = bstrtoll(devno, &r, 0); if (r.len || priv->cfg_devno < 0 || priv->cfg_devno > MAX_ADAPTERS) { MP_ERR(stream, "invalid devno: '%.*s'\n", BSTR_P(devno)); return NULL; } }
MP_VERBOSE(stream, "DVB_CONFIG: prog=%s, devno=%d\n", priv->cfg_prog, priv->cfg_devno);
state = malloc(sizeof(dvb_state_t)); if (state == NULL) return NULL; memset(state, 0x00, sizeof(dvb_state_t)); state->switching_channel = false; state->stream_used = true; state->fe_fd = state->dvr_fd = -1; for (unsigned int i = 0; i < MAX_ADAPTERS; i++) { list = NULL; for (unsigned int f = 0; f < MAX_FRONTENDS; f++) { 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;
mp_verbose(log, "Opened device %s, FD: %d\n", filename, fd); 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. */ } mp_verbose(log, "Frontend device %s offers some supported delivery systems.\n", filename); /* Create channel list for adapter. */ for (delsys = 0; delsys < SYS_DVB__COUNT__; delsys++) { if (!DELSYS_IS_SET(delsys_mask[f], delsys)) continue; /* Skip unsupported. */
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)) continue; /* Add all channels later with T2. */ /* PASSTOUTH */ case SYS_DVBT2: conf_file_name = "channels.conf.ter"; break; case SYS_DVBS: if (DELSYS_IS_SET(delsys_mask[f], SYS_DVBS2)) continue; /* Add all channels later with S2. */ /* PASSTOUTH */ case SYS_DVBS2: conf_file_name = "channels.conf.sat"; break; default: continue; }
if (priv->cfg_file && priv->cfg_file[0]) { talloc_ctx = NULL; conf_file = priv->cfg_file; } else { talloc_ctx = talloc_new(NULL); 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->cfg_full_transponder, conf_file, f, delsys, delsys_mask[f]); talloc_free(talloc_ctx); } } /* Add adapter with non zero channel list. */ if (list == NULL) continue;
size = sizeof(dvb_adapter_config_t) * (state->adapters_count + 1); tmp = realloc(state->adapters, size);
if (tmp == NULL) { mp_err(log, "DVB_CONFIG, can't realloc %d bytes, skipping\n", size); free(list); continue; } adapters = tmp;
state->adapters = adapters; state->adapters[state->adapters_count].devno = i; memcpy(&state->adapters[state->adapters_count].delsys_mask, &delsys_mask, (sizeof(unsigned int) * MAX_FRONTENDS)); state->adapters[state->adapters_count].list = list; state->adapters_count++; }
if (state->adapters_count == 0) { free(state); state = NULL; }
global_dvb_state = state; return state;}
const stream_info_t stream_info_dvb = { .name = "dvbin", .open = dvb_open, .protocols = (const char *const[]){ "dvb", NULL },};