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561 lines
18 KiB
C
561 lines
18 KiB
C
/* dvbtune - tune.c
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Copyright (C) Dave Chapman 2001,2002
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Modified for use with MPlayer, for details see the changelog at
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http://svn.mplayerhq.hu/mplayer/trunk/
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$Id$
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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Or, point your browser to http://www.gnu.org/copyleft/gpl.html
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/ioctl.h>
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#include <poll.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <time.h>
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#include <errno.h>
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#include <linux/dvb/dmx.h>
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#include <linux/dvb/frontend.h>
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#include "config.h"
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#include "osdep/io.h"
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#include "dvbin.h"
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#include "dvb_tune.h"
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#include "common/msg.h"
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int dvb_get_tuner_type(int fe_fd, struct mp_log *log)
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{
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struct dvb_frontend_info fe_info;
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int res = ioctl(fe_fd, FE_GET_INFO, &fe_info);
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if (res < 0) {
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mp_err(log, "FE_GET_INFO error: %d, FD: %d\n\n", errno, fe_fd);
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return 0;
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}
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switch (fe_info.type) {
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case FE_OFDM:
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mp_verbose(log, "TUNER TYPE SEEMS TO BE DVB-T\n");
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return TUNER_TER;
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case FE_QPSK:
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mp_verbose(log, "TUNER TYPE SEEMS TO BE DVB-S\n");
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return TUNER_SAT;
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case FE_QAM:
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mp_verbose(log, "TUNER TYPE SEEMS TO BE DVB-C\n");
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return TUNER_CBL;
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#ifdef DVB_ATSC
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case FE_ATSC:
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mp_verbose(log, "TUNER TYPE SEEMS TO BE DVB-ATSC\n");
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return TUNER_ATSC;
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#endif
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default:
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mp_err(log, "UNKNOWN TUNER TYPE\n");
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return 0;
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}
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}
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int dvb_open_devices(dvb_priv_t *priv, int n, int demux_cnt)
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{
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int i;
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char frontend_dev[32], dvr_dev[32], demux_dev[32];
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sprintf(frontend_dev, "/dev/dvb/adapter%d/frontend0", n);
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sprintf(dvr_dev, "/dev/dvb/adapter%d/dvr0", n);
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sprintf(demux_dev, "/dev/dvb/adapter%d/demux0", n);
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priv->fe_fd = open(frontend_dev, O_RDWR | O_NONBLOCK | O_CLOEXEC);
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if (priv->fe_fd < 0) {
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MP_ERR(priv, "ERROR OPENING FRONTEND DEVICE %s: ERRNO %d\n",
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frontend_dev, errno);
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return 0;
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}
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priv->demux_fds_cnt = 0;
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MP_VERBOSE(priv, "DVB_OPEN_DEVICES(%d)\n", demux_cnt);
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for (i = 0; i < demux_cnt; i++) {
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priv->demux_fds[i] = open(demux_dev, O_RDWR | O_NONBLOCK | O_CLOEXEC);
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if (priv->demux_fds[i] < 0) {
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MP_ERR(priv, "ERROR OPENING DEMUX 0: %d\n", errno);
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return 0;
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} else {
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MP_VERBOSE(priv, "OPEN(%d), file %s: FD=%d, CNT=%d\n", i, demux_dev,
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priv->demux_fds[i], priv->demux_fds_cnt);
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priv->demux_fds_cnt++;
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}
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}
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priv->dvr_fd = open(dvr_dev, O_RDONLY | O_NONBLOCK | O_CLOEXEC);
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if (priv->dvr_fd < 0) {
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MP_ERR(priv, "ERROR OPENING DVR DEVICE %s: %d\n", dvr_dev, errno);
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return 0;
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}
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return 1;
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}
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int dvb_fix_demuxes(dvb_priv_t *priv, int cnt)
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{
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int i;
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char demux_dev[32];
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sprintf(demux_dev, "/dev/dvb/adapter%d/demux0", priv->card);
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MP_VERBOSE(priv, "FIX %d -> %d\n", priv->demux_fds_cnt, cnt);
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if (priv->demux_fds_cnt >= cnt) {
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for (i = priv->demux_fds_cnt - 1; i >= cnt; i--) {
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MP_VERBOSE(priv, "FIX, CLOSE fd(%d): %d\n", i, priv->demux_fds[i]);
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close(priv->demux_fds[i]);
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}
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priv->demux_fds_cnt = cnt;
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} else if (priv->demux_fds_cnt < cnt) {
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for (i = priv->demux_fds_cnt; i < cnt; i++) {
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priv->demux_fds[i] = open(demux_dev,
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O_RDWR | O_NONBLOCK | O_CLOEXEC);
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MP_VERBOSE(priv, "FIX, OPEN fd(%d): %d\n", i, priv->demux_fds[i]);
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if (priv->demux_fds[i] < 0) {
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MP_ERR(priv, "ERROR OPENING DEMUX 0: %d\n", errno);
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return 0;
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} else
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priv->demux_fds_cnt++;
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}
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}
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return 1;
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}
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int dvb_set_ts_filt(dvb_priv_t *priv, int fd, uint16_t pid,
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dmx_pes_type_t pestype)
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{
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int i;
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struct dmx_pes_filter_params pesFilterParams;
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pesFilterParams.pid = pid;
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pesFilterParams.input = DMX_IN_FRONTEND;
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pesFilterParams.output = DMX_OUT_TS_TAP;
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pesFilterParams.pes_type = pestype;
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pesFilterParams.flags = DMX_IMMEDIATE_START;
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{
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int buffersize = 64 * 1024;
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if (ioctl(fd, DMX_SET_BUFFER_SIZE, buffersize) < 0)
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MP_ERR(priv, "ERROR IN DMX_SET_BUFFER_SIZE %i for fd %d: ERRNO: %d\n",
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pid, fd, errno);
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}
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errno = 0;
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if ((i = ioctl(fd, DMX_SET_PES_FILTER, &pesFilterParams)) < 0) {
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MP_ERR(priv, "ERROR IN SETTING DMX_FILTER %i for fd %d: ERRNO: %d\n",
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pid, fd, errno);
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return 0;
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}
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MP_VERBOSE(priv, "SET PES FILTER ON PID %d to fd %d, RESULT: %d, ERRNO: %d\n",
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pid, fd, i, errno);
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return 1;
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}
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int dvb_get_pmt_pid(dvb_priv_t *priv, int card, int service_id)
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{
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/* We need special filters on the demux,
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so open one locally, and close also here. */
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char demux_dev[32];
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sprintf(demux_dev, "/dev/dvb/adapter%d/demux0", card);
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struct dmx_sct_filter_params fparams;
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memset(&fparams, 0, sizeof(fparams));
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fparams.pid = 0;
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fparams.filter.filter[0] = 0x00;
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fparams.filter.mask[0] = 0xff;
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fparams.timeout = 0;
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fparams.flags = DMX_IMMEDIATE_START | DMX_CHECK_CRC;
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int pat_fd;
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if ((pat_fd = open(demux_dev, O_RDWR)) < 0) {
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MP_ERR(priv, "Opening PAT DEMUX failed, error: %d", errno);
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return -1;
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}
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if (ioctl(pat_fd, DMX_SET_FILTER, &fparams) == -1) {
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MP_ERR(priv, "ioctl DMX_SET_FILTER failed, error: %d", errno);
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close(pat_fd);
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return -1;
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}
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int bytes_read;
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int section_length;
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unsigned char buft[4096];
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unsigned char *bufptr = buft;
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int pmt_pid = -1;
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bool pat_read = false;
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while (!pat_read) {
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if (((bytes_read =
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read(pat_fd, bufptr,
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sizeof(buft))) < 0) && errno == EOVERFLOW)
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bytes_read = read(pat_fd, bufptr, sizeof(buft));
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if (bytes_read < 0) {
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MP_ERR(priv, "PAT: read_sections: read error: %d", errno);
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close(pat_fd);
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return -1;
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}
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section_length = ((bufptr[1] & 0x0f) << 8) | bufptr[2];
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if (bytes_read != section_length + 3)
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continue;
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bufptr += 8;
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section_length -= 8;
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/* assumes one section contains the whole pat */
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pat_read = true;
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while (section_length > 0) {
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int this_service_id = (bufptr[0] << 8) | bufptr[1];
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if (this_service_id == service_id) {
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pmt_pid = ((bufptr[2] & 0x1f) << 8) | bufptr[3];
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section_length = 0;
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}
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bufptr += 4;
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section_length -= 4;
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}
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}
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close(pat_fd);
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return pmt_pid;
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}
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int dvb_demux_stop(int fd)
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{
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return ioctl(fd, DMX_STOP) == 0;
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}
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int dvb_demux_start(int fd)
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{
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return ioctl(fd, DMX_START) == 0;
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}
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static void print_status(dvb_priv_t *priv, fe_status_t festatus)
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{
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MP_VERBOSE(priv, "FE_STATUS:");
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if (festatus & FE_HAS_SIGNAL)
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MP_VERBOSE(priv, " FE_HAS_SIGNAL");
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if (festatus & FE_TIMEDOUT)
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MP_VERBOSE(priv, " FE_TIMEDOUT");
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if (festatus & FE_HAS_LOCK)
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MP_VERBOSE(priv, " FE_HAS_LOCK");
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if (festatus & FE_HAS_CARRIER)
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MP_VERBOSE(priv, " FE_HAS_CARRIER");
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if (festatus & FE_HAS_VITERBI)
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MP_VERBOSE(priv, " FE_HAS_VITERBI");
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if (festatus & FE_HAS_SYNC)
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MP_VERBOSE(priv, " FE_HAS_SYNC");
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MP_VERBOSE(priv, "\n");
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}
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static int check_status(dvb_priv_t *priv, int fd_frontend, int tmout)
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{
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int32_t strength;
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fe_status_t festatus;
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struct pollfd pfd[1];
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int ok = 0, locks = 0;
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time_t tm1, tm2;
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pfd[0].fd = fd_frontend;
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pfd[0].events = POLLPRI;
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MP_VERBOSE(priv, "Getting frontend status\n");
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tm1 = tm2 = time((time_t *) NULL);
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while (!ok) {
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festatus = 0;
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if (poll(pfd, 1, tmout * 1000) > 0) {
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if (pfd[0].revents & POLLPRI) {
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if (ioctl(fd_frontend, FE_READ_STATUS, &festatus) >= 0) {
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if (festatus & FE_HAS_LOCK)
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locks++;
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}
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}
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}
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usleep(10000);
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tm2 = time((time_t *) NULL);
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if ((festatus & FE_TIMEDOUT) || (locks >= 2) || (tm2 - tm1 >= tmout))
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ok = 1;
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}
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if (festatus & FE_HAS_LOCK) {
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strength = 0;
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if (ioctl(fd_frontend, FE_READ_BER, &strength) >= 0)
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MP_VERBOSE(priv, "Bit error rate: %d\n", strength);
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strength = 0;
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if (ioctl(fd_frontend, FE_READ_SIGNAL_STRENGTH, &strength) >= 0)
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MP_VERBOSE(priv, "Signal strength: %d\n", strength);
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strength = 0;
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if (ioctl(fd_frontend, FE_READ_SNR, &strength) >= 0)
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MP_VERBOSE(priv, "SNR: %d\n", strength);
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strength = 0;
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if (ioctl(fd_frontend, FE_READ_UNCORRECTED_BLOCKS, &strength) >= 0)
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MP_VERBOSE(priv, "UNC: %d\n", strength);
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print_status(priv, festatus);
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} else {
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MP_ERR(priv, "Not able to lock to the signal on the given frequency, "
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"timeout: %d\n", tmout);
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return -1;
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}
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return 0;
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}
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struct diseqc_cmd {
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struct dvb_diseqc_master_cmd cmd;
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uint32_t wait;
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};
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static int diseqc_send_msg(int fd, fe_sec_voltage_t v, struct diseqc_cmd *cmd,
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fe_sec_tone_mode_t t, fe_sec_mini_cmd_t b)
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{
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if (ioctl(fd, FE_SET_TONE, SEC_TONE_OFF) == -1)
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return -1;
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if (ioctl(fd, FE_SET_VOLTAGE, v) == -1)
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return -1;
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usleep(15 * 1000);
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if (ioctl(fd, FE_DISEQC_SEND_MASTER_CMD, &cmd->cmd) == -1)
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return -1;
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usleep(cmd->wait * 1000);
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usleep(15 * 1000);
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if (ioctl(fd, FE_DISEQC_SEND_BURST, b) == -1)
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return -1;
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usleep(15 * 1000);
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if (ioctl(fd, FE_SET_TONE, t) == -1)
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return -1;
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return 0;
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}
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/* digital satellite equipment control,
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* specification is available from http://www.eutelsat.com/
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*/
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static int do_diseqc(int secfd, int sat_no, int polv, int hi_lo)
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{
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struct diseqc_cmd cmd = { {{0xe0, 0x10, 0x38, 0xf0, 0x00, 0x00}, 4}, 0 };
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/* param: high nibble: reset bits, low nibble set bits,
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* bits are: option, position, polarizaion, band
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*/
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cmd.cmd.msg[3] = 0xf0 | (((sat_no * 4) & 0x0f) | (hi_lo ? 1 : 0) | (polv ? 0 : 2));
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return diseqc_send_msg(secfd, polv ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18,
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&cmd, hi_lo ? SEC_TONE_ON : SEC_TONE_OFF,
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(sat_no / 4) % 2 ? SEC_MINI_B : SEC_MINI_A);
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}
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static int tune_it(dvb_priv_t *priv, int fd_frontend, int fd_sec,
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unsigned int freq, unsigned int srate, char pol, int tone,
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bool is_dvb_s2, int stream_id,
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fe_spectral_inversion_t specInv, unsigned int diseqc,
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fe_modulation_t modulation,
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fe_code_rate_t HP_CodeRate,
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fe_transmit_mode_t TransmissionMode,
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fe_guard_interval_t guardInterval,
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fe_bandwidth_t bandwidth,
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fe_code_rate_t LP_CodeRate, fe_hierarchy_t hier,
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int timeout)
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{
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int hi_lo = 0, dfd;
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struct dvb_frontend_parameters feparams;
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struct dvb_frontend_info fe_info;
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MP_VERBOSE(priv, "TUNE_IT, fd_frontend %d, fd_sec %d\nfreq %lu, srate %lu, "
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"pol %c, tone %i, diseqc %u\n", fd_frontend, fd_sec,
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(long unsigned int)freq, (long unsigned int)srate, pol,
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tone, diseqc);
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memset(&feparams, 0, sizeof(feparams));
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if (ioctl(fd_frontend, FE_GET_INFO, &fe_info) < 0) {
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MP_FATAL(priv, "FE_GET_INFO FAILED\n");
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return -1;
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}
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MP_VERBOSE(priv, "Using DVB card \"%s\"\n", fe_info.name);
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{
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/* discard stale QPSK events */
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struct dvb_frontend_event ev;
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while (true) {
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if (ioctl(fd_frontend, FE_GET_EVENT, &ev) == -1)
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break;
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}
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}
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switch (fe_info.type) {
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case FE_OFDM:
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if (freq < 1000000)
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freq *= 1000UL;
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feparams.frequency = freq;
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feparams.inversion = specInv;
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feparams.u.ofdm.bandwidth = bandwidth;
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feparams.u.ofdm.code_rate_HP = HP_CodeRate;
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feparams.u.ofdm.code_rate_LP = LP_CodeRate;
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feparams.u.ofdm.constellation = modulation;
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feparams.u.ofdm.transmission_mode = TransmissionMode;
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feparams.u.ofdm.guard_interval = guardInterval;
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feparams.u.ofdm.hierarchy_information = hier;
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MP_VERBOSE(priv, "tuning DVB-T to %d Hz, bandwidth: %d\n",
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freq, bandwidth);
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if (ioctl(fd_frontend, FE_SET_FRONTEND, &feparams) < 0) {
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MP_ERR(priv, "ERROR tuning channel\n");
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return -1;
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}
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break;
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case FE_QPSK:
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// DVB-S
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if (freq > 2200000) {
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// this must be an absolute frequency
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if (freq < SLOF) {
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freq = feparams.frequency = (freq - LOF1);
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hi_lo = 0;
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} else {
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freq = feparams.frequency = (freq - LOF2);
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hi_lo = 1;
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}
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} else {
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// this is an L-Band frequency
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feparams.frequency = freq;
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}
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feparams.inversion = specInv;
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feparams.u.qpsk.symbol_rate = srate;
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feparams.u.qpsk.fec_inner = HP_CodeRate;
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dfd = fd_frontend;
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MP_VERBOSE(priv, "tuning DVB-S%sto Freq: %u, Pol: %c Srate: %d, "
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"22kHz: %s, LNB: %d\n", is_dvb_s2 ? "2 " : " ", freq,
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pol, srate, hi_lo ? "on" : "off", diseqc);
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if (do_diseqc(dfd, diseqc, (pol == 'V' ? 1 : 0), hi_lo) == 0) {
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MP_VERBOSE(priv, "DISEQC setting succeeded\n");
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} else {
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|
MP_ERR(priv, "DISEQC setting failed\n");
|
|
return -1;
|
|
}
|
|
usleep(100000);
|
|
|
|
#ifdef DVB_USE_S2API
|
|
/* S2API is the DVB API new since 2.6.28.
|
|
* It is needed to tune to new delivery systems, e.g. DVB-S2.
|
|
* It takes a struct with a list of pairs of command + parameter.
|
|
*/
|
|
|
|
fe_delivery_system_t delsys = SYS_DVBS;
|
|
if (is_dvb_s2)
|
|
delsys = SYS_DVBS2;
|
|
fe_rolloff_t rolloff = ROLLOFF_AUTO;
|
|
|
|
struct dtv_property p[] = {
|
|
{ .cmd = DTV_DELIVERY_SYSTEM, .u.data = delsys },
|
|
{ .cmd = DTV_FREQUENCY, .u.data = freq },
|
|
{ .cmd = DTV_MODULATION, .u.data = modulation },
|
|
{ .cmd = DTV_SYMBOL_RATE, .u.data = srate },
|
|
{ .cmd = DTV_INNER_FEC, .u.data = HP_CodeRate },
|
|
{ .cmd = DTV_INVERSION, .u.data = specInv },
|
|
{ .cmd = DTV_ROLLOFF, .u.data = rolloff },
|
|
{ .cmd = DTV_PILOT, .u.data = PILOT_AUTO },
|
|
{ .cmd = DTV_STREAM_ID, .u.data = stream_id },
|
|
{ .cmd = DTV_TUNE },
|
|
};
|
|
struct dtv_properties cmdseq = {
|
|
.num = sizeof(p) / sizeof(p[0]),
|
|
.props = p
|
|
};
|
|
MP_VERBOSE(priv, "Tuning via S2API, channel is DVB-S%s.\n",
|
|
is_dvb_s2 ? "2" : "");
|
|
if ((ioctl(fd_frontend, FE_SET_PROPERTY, &cmdseq)) == -1) {
|
|
MP_ERR(priv, "ERROR tuning channel\n");
|
|
return -1;
|
|
}
|
|
#else
|
|
MP_VERBOSE(priv, "Tuning via DVB-API version 3.\n");
|
|
if (is_dvb_s2) {
|
|
MP_ERR(priv, "ERROR: Can not tune to S2 channel, S2-API not "
|
|
"available, will tune to DVB-S!\n");
|
|
}
|
|
if (ioctl(fd_frontend, FE_SET_FRONTEND, &feparams) < 0) {
|
|
MP_ERR(priv, "ERROR tuning channel\n");
|
|
return -1;
|
|
}
|
|
#endif
|
|
break;
|
|
case FE_QAM:
|
|
feparams.frequency = freq;
|
|
feparams.inversion = specInv;
|
|
feparams.u.qam.symbol_rate = srate;
|
|
feparams.u.qam.fec_inner = HP_CodeRate;
|
|
feparams.u.qam.modulation = modulation;
|
|
MP_VERBOSE(priv, "tuning DVB-C to %d, srate=%d\n", freq, srate);
|
|
if (ioctl(fd_frontend, FE_SET_FRONTEND, &feparams) < 0) {
|
|
MP_ERR(priv, "ERROR tuning channel\n");
|
|
return -1;
|
|
}
|
|
break;
|
|
#ifdef DVB_ATSC
|
|
case FE_ATSC:
|
|
feparams.frequency = freq;
|
|
feparams.u.vsb.modulation = modulation;
|
|
MP_VERBOSE(priv, "tuning ATSC to %d, modulation=%d\n", freq, modulation);
|
|
if (ioctl(fd_frontend, FE_SET_FRONTEND, &feparams) < 0) {
|
|
MP_ERR(priv, "ERROR tuning channel\n");
|
|
return -1;
|
|
}
|
|
break;
|
|
#endif
|
|
default:
|
|
MP_VERBOSE(priv, "Unknown FE type. Aborting\n");
|
|
return 0;
|
|
}
|
|
|
|
return check_status(priv, fd_frontend, timeout);
|
|
}
|
|
|
|
int dvb_tune(dvb_priv_t *priv, int freq, char pol, int srate, int diseqc,
|
|
int tone,
|
|
bool is_dvb_s2, int stream_id, fe_spectral_inversion_t specInv,
|
|
fe_modulation_t modulation, fe_guard_interval_t guardInterval,
|
|
fe_transmit_mode_t TransmissionMode, fe_bandwidth_t bandWidth,
|
|
fe_code_rate_t HP_CodeRate,
|
|
fe_code_rate_t LP_CodeRate, fe_hierarchy_t hier,
|
|
int timeout)
|
|
{
|
|
MP_INFO(priv, "dvb_tune Freq: %lu\n", (long unsigned int) freq);
|
|
|
|
int ris = tune_it(priv, priv->fe_fd, priv->sec_fd, freq, srate, pol, tone,
|
|
is_dvb_s2, stream_id, specInv, diseqc, modulation,
|
|
HP_CodeRate, TransmissionMode, guardInterval,
|
|
bandWidth, LP_CodeRate, hier, timeout);
|
|
|
|
if (ris != 0)
|
|
MP_INFO(priv, "dvb_tune, TUNING FAILED\n");
|
|
|
|
return ris == 0;
|
|
}
|