1 // jam job dvb file testing
2 // 1) define TEST_DATA as mpeg ts file "name.ts"
3 // 2) mod record.C Record::resync(), comment out: record_channel->drain_audio()
4 // 3) enable audio delay in audioidevice.C AudioDevice::run_input, #if 0 <-> #if 1
5 //#define TEST_DATA "/tmp/xx.ts"
9 * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #include "chantables.h"
28 #include "devicedvbinput.h"
29 #include "devicempeginput.h"
30 #include "recordconfig.h"
31 #include "signalstatus.h"
41 #include <linux/dvb/dmx.h>
42 #include <linux/dvb/frontend.h>
44 #include <sys/ioctl.h>
47 DVBInputStatus::DVBInputStatus(DeviceDVBInput *dvb_input)
50 this->dvb_input = dvb_input;
55 DVBInputStatus::~DVBInputStatus()
58 if( signal_status ) signal_status->disconnect();
61 void DVBInputStatus::stop()
69 void DVBInputStatus::start()
76 void DVBInputStatus::lock_dvb()
78 Thread::disable_cancel();
79 dvb_input->dvb_lock->lock("DVBInputStatus::lock_dvb");
82 void DVBInputStatus::unlock_dvb()
84 dvb_input->dvb_lock->unlock();
85 Thread::enable_cancel();
88 void DVBInputStatus::run()
93 dvb_input->status_dev();
103 void DVBInputStatus::update()
105 if( !signal_status ) return;
106 signal_status->lock_window("DVBInputStatus::update");
107 signal_status->update();
108 signal_status->unlock_window();
112 DeviceDVBInput::DeviceDVBInput(const char *name, int no)
113 : DeviceMPEGInput(name, no)
120 dvb_lock = new Mutex("DeviceDVBInput::dvb_lock", 0);
121 sprintf(frontend_path, "%s/frontend%d", name, no);
122 sprintf(demux_path, "%s/demux%d", name, no);
123 sprintf(dvb_path, "%s/dvr%d", name, no);
124 dvb_input_status = new DVBInputStatus(this);
127 DeviceMPEGInput *DeviceDVBInput::
128 NewDVBInput(const char *name, int no)
130 return (DeviceMPEGInput *) new DeviceDVBInput(name, no);
133 DeviceDVBInput::~DeviceDVBInput()
136 delete dvb_input_status;
142 DeviceMPEGInput* DeviceDVBInput::get_mpeg_input(VideoDevice *device)
144 DeviceMPEGInput* mpeg_device = get_mpeg_video(device, NewDVBInput,
145 device->in_config->dvb_in_adapter, device->in_config->dvb_in_device);
146 if( !mpeg_device ) return 0;
147 device->channel->has_subchan = 1;
148 device->channel->has_scanning = 1;
149 device->channel->use_frequency = 1;
150 mpeg_device->set_device_number(0);
151 Channel *input_src = device->new_input_source((char*)"input0");
152 input_src->device_index = 0;
153 input_src->tuner = 0;
157 DeviceMPEGInput* DeviceDVBInput::get_mpeg_input(AudioDevice *device)
159 return get_mpeg_audio(device, NewDVBInput,
160 device->in_config->dvb_in_adapter, device->in_config->dvb_in_device);
164 int DeviceDVBInput::wait_signal(int ms, int trys)
167 for( int retry=trys; --retry>=0; ) {
169 if( !dvb_status() && has_signal() ) break;
170 int dt = ms - timer.get_difference();
171 if( dt > 0 ) Timer::delay(dt);
173 return has_signal() ? 0 : 1;
177 int DeviceDVBBuffer::read(int retries, int usec, int bsz)
179 while( --retries >= 0 ) {
180 struct timeval tv; tv.tv_sec = 0; tv.tv_usec = usec;
181 fd_set rd_fd; FD_ZERO(&rd_fd); FD_SET(fd, &rd_fd);
182 fd_set er_fd; FD_ZERO(&er_fd); FD_SET(fd, &er_fd);
183 int ret = select(fd+1, &rd_fd, 0, &er_fd, &tv);
186 if( !FD_ISSET(fd, &er_fd) ) {
187 select(0, 0, 0, 0, &tv);
190 if( !FD_ISSET(fd, &rd_fd) ) continue;
191 if( (ret=::read(fd, bfr, bsz)) > 0 )
197 int DeviceDVBInput::dvb_sync()
199 const int SYNC = 0x47, TS_BLKSZ = 188;
200 const int BSZ = 100*TS_BLKSZ, XSZ = BSZ*5;
201 DeviceDVBBuffer data(dvb_fd, BSZ);
203 int nsync = 0, xfr = 0;
205 if( data.read(5, 200000, BSZ) < 0 ) break;
207 while( ofs < data.size() ) {
210 while( i<data.size() && data[i]!=SYNC ) ++i;
211 if( i >= data.size() ) break;
213 while( (ofs+=TS_BLKSZ)<data.size() && data[ofs]==SYNC ) {
217 if( nsync >= 32 && (ofs-=data.size()) >= 0 ) {
219 if( data.read(5, 200000, ofs) < 0 ) return 1;
229 int DeviceDVBInput::dvb_open()
234 if( frontend_fd < 0 &&
235 (frontend_fd = ::open(frontend_path, O_RDWR)) < 0 ) {
236 fprintf(stderr, "DeviceDVBInput::dvb_open %s: %s\n",
237 frontend_path, strerror(errno));
240 if( !ret && ioctl(frontend_fd, FE_GET_INFO, &fe_info) < 0 ) {
242 "DeviceDVBInput::dvb_open FE_GET_INFO: %s\n",
247 pwr_min = snr_min = 0;
248 pwr_max = snr_max = 65535;
251 int index = -1, table = -1;
252 if( !ret && (index = get_channel()) < 0 ) ret = 1;
253 if( !ret && (table = get_channel_table()) < 0 ) ret = 1;
255 uint32_t frequency = 0;
256 struct dvb_frontend_parameters frontend_param;
257 bzero(&frontend_param, sizeof(frontend_param));
261 if( index >= chanlists[NTSC_DVB].count ) break;
262 frequency = chanlists[NTSC_DVB].list[index].freq * 1000000;
263 if( frequency < fe_info.frequency_min ||
264 frequency > fe_info.frequency_max ) break;
265 frontend_param.frequency = frequency;
266 frontend_param.u.vsb.modulation = VSB_8;
270 if( index >= chanlists[CATV_DVB].count ) break;
271 frequency = chanlists[CATV_DVB].list[index].freq * 1000000;
272 if( frequency < fe_info.frequency_min ||
273 frequency > fe_info.frequency_max ) break;
274 frontend_param.frequency = frequency;
275 frontend_param.u.vsb.modulation = QAM_AUTO;
280 if( !ret && ioctl(frontend_fd, FE_SET_FRONTEND, &frontend_param) < 0 ) {
282 "DeviceDVBInput::dvb_open FE_SET_FRONTEND frequency=%d: %s\n",
283 frontend_param.frequency, strerror(errno));
287 if( !ret && wait_signal(333,3) ) {
289 "DeviceDVBInput::dvb_open: no signal, index=%d frequency=%d\n",
290 index, frontend_param.frequency);
294 if( !ret && ioctl(frontend_fd, FE_GET_FRONTEND, &frontend_param) ) {
296 "DeviceDVBInput::dvb_open FE_GET_FRONTEND: %s\n",
300 if( !ret ) { // goofy quirks
301 if( !strcmp("Samsung S5H1409 QAM/8VSB Frontend", fe_info.name) ) {
302 switch(frontend_param.u.vsb.modulation) {
303 case QAM_64: snr_min = 200; snr_max = 300; break;
304 case QAM_256: snr_min = 260; snr_max = 400; break;
305 case VSB_8: snr_min = 111; snr_max = 300; break;
308 pwr_min = snr_min; pwr_max = snr_max;
310 else if( !strcmp("Auvitek AU8522 QAM/8VSB Frontend", fe_info.name) ) {
311 switch(frontend_param.u.vsb.modulation) {
312 case QAM_64: snr_min = 190; snr_max = 290; break;
313 case QAM_256: snr_min = 280; snr_max = 400; break;
314 case VSB_8: snr_min = 115; snr_max = 270; break;
317 pwr_min = snr_min; pwr_max = snr_max;
322 if( !ret && (demux_fd = ::open(demux_path, O_RDWR)) < 0 ) {
324 "DeviceDVBInput::dvb_open %s for video: %s\n",
330 // Setting exactly one PES filter to 0x2000 dumps the entire
333 struct dmx_pes_filter_params pesfilter;
334 memset(&pesfilter,0,sizeof(pesfilter));
335 pesfilter.pid = 0x2000;
336 pesfilter.input = DMX_IN_FRONTEND;
337 pesfilter.output = DMX_OUT_TS_TAP;
338 pesfilter.pes_type = DMX_PES_OTHER;
339 pesfilter.flags = DMX_IMMEDIATE_START;
340 if( ioctl(demux_fd, DMX_SET_PES_FILTER, &pesfilter) < 0 ) {
342 "DeviceDVBInput::dvb_open DMX_SET_PES_FILTER for raw: %s\n",
347 // Open transport stream for reading
348 if( !ret && (dvb_fd = ::open(dvb_path, O_RDONLY+O_NONBLOCK)) < 0 ) {
349 fprintf(stderr, "DeviceDVBInput::dvb_open %s: %s\n",
350 dvb_path, strerror(errno));
358 dvb_fd = open(TEST_DATA,O_RDONLY);
359 if( dvb_fd < 0 ) ret = 1;
363 if( !ret ) ret = dvb_sync();
364 if( !ret ) ret = dvb_status();
365 if( ret ) dvb_close();
370 void DeviceDVBInput::dvb_close(int fe)
372 if( dvb_fd >= 0 ) { ::close(dvb_fd); dvb_fd = -1; }
373 if( demux_fd >= 0 ) { ::close(demux_fd); demux_fd = -1; }
374 if( fe && frontend_fd >= 0 ) { ::close(frontend_fd); frontend_fd = -1; }
378 int DeviceDVBInput::dvb_status()
380 //note: this function can take > 500ms to execute (slowww)
385 int &fe = frontend_fd;
386 if( fe < 0 ) return -1;
387 fe_status_t st; memset(&st, 0, sizeof(st));
388 if( ioctl(fe, FE_READ_STATUS, &st) ) return 1;
389 if( (st & FE_TIMEDOUT) != 0 ) return 1;
390 signal_lck = (st & FE_HAS_LOCK) != 0 ? 1 : 0;
391 signal_crr = (st & FE_HAS_CARRIER) != 0 ? 1 : 0;
393 signal_pwr = ioctl(fe,FE_READ_SIGNAL_STRENGTH,&power) ? -1 :
394 drange(power, pwr_min, pwr_max);
396 signal_snr = ioctl(fe, FE_READ_SNR, &ratio) ? -1 :
397 drange(ratio, snr_min, snr_max);
399 signal_ber = ioctl(fe, FE_READ_BER, &rate) ? -1 : rate;
401 signal_unc = ioctl(fe, FE_READ_UNCORRECTED_BLOCKS, &errs) ? -1 : errs;
402 if( signal_lck && signal_ber >= 0 && signal_ber < 255 ) locked = 1;
403 if( dvb_locked != locked ) {
404 printf(_("** %scarrier, dvb_locked %s\n"),
405 signal_crr ? "" : _("no "), locked ? _("lock") : _("lost") );
413 int DeviceDVBInput::drange(int v, int min, int max)
415 if( (v-=min) < 0 || (max-=min) <= 0 ) return 0;
416 return v>max ? 65535U : (65535U * v) / max;
419 void DeviceDVBInput::reset_signal()
421 signal_pwr = signal_crr = signal_lck =
422 signal_snr = signal_ber = signal_unc = -1;
425 int DeviceDVBInput::open_dev(int color_model)
428 dvb_lock->lock("DeviceDVBInput::open_dev");
433 printf("DeviceDVBInput::open_dev: adaptor %s open failed\n",
438 dvb_input_status->start();
445 void DeviceDVBInput::close_dev()
447 dvb_lock->lock("DeviceDVBInput::close_dev");
448 dvb_input_status->stop();
453 int DeviceDVBInput::status_dev()
457 result = frontend_fd >= 0 ? dvb_status() : 1;
462 void DeviceDVBInput::set_signal_status(SignalStatus *stat)
464 dvb_lock->lock("DeviceDVBInput::set_signal_status");
465 if( dvb_input_status->signal_status )
466 dvb_input_status->signal_status->disconnect();
467 dvb_input_status->signal_status = stat;
468 if( stat ) stat->dvb_input = this;