--- /dev/null
+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include "../../guicast/bcwindowbase.inc"
+#include "../../guicast/clip.h"
+#include "condition.h"
+#include "devicedvbinput.inc"
+#include "dvbtune.h"
+#include "mutex.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#ifdef HAVE_DVB
+#include <linux/dvb/dmx.h>
+#include <linux/dvb/frontend.h>
+#endif
+#include <stdio.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+
+
+
+#ifdef HAVE_DVB
+/* Frequency tables ripped straight off of pchdtv source code. */
+/* DVB frequencies for US broadcast */
+/* First two entries are to make the entries
+ line up with the channel number as index */
+static unsigned long ntsc_dvb[ ] = {
+ 0, 0, 57, 63, 69, 79, 85, 177, 183, 189 ,
+ 195, 201, 207, 213, 473, 479, 485, 491, 497, 503 ,
+ 509, 515, 521, 527, 533, 539, 545, 551, 557, 563 ,
+ 569, 575, 581, 587, 593, 599, 605, 611, 617, 623 ,
+ 629, 635, 641, 647, 653, 659, 665, 671, 677, 683 ,
+ 689, 695, 701, 707, 713, 719, 725, 731, 737, 743 ,
+ 749, 755, 761, 767, 773, 779, 785, 791, 797, 803 ,
+ 809, 815, 821, 827, 833, 839, 845, 851, 857, 863 ,
+ 869, 875, 881, 887, 893, 899, 905, 911, 917, 923 ,
+ 929, 935, 941, 947, 953, 959, 965, 971, 977, 983 ,
+ 989, 995, 1001, 1007, 1013, 1019, 1025, 1031, 1037, 1043
+};
+
+static unsigned long catv_dvb[] = {
+ 0, 0, 57, 63, 69, 79, 85, 177, 183, 189,
+ 195, 201, 207, 213, 123, 129, 135, 141, 147, 153,
+ 159, 165, 171, 219, 225, 231, 237, 243, 249, 255,
+ 261, 267, 273, 279, 285, 291, 297, 303, 309, 315,
+ 321, 327, 333, 339, 345, 351, 357, 363, 369, 375,
+ 381, 387, 393, 399, 405, 411, 417, 423, 429, 435,
+ 441, 447, 453, 459, 465, 471, 477, 483, 489, 495,
+ 501, 507, 513, 519, 525, 531, 537, 543, 549, 555,
+ 561, 567, 573, 579, 585, 591, 597, 603, 609, 615,
+ 621, 627, 633, 639, 645, 93, 99, 105, 111, 117,
+ 651, 657, 663, 669, 675, 681, 687, 693, 699, 705,
+ 711, 717, 723, 729, 735, 741, 747, 753, 759, 765,
+ 771, 777, 783, 789, 795, 781, 807, 813, 819, 825,
+ 831, 837, 843, 849, 855, 861, 867, 873, 879, 885,
+ 891, 897, 903, 909, 915, 921, 927, 933, 939, 945,
+ 951, 957, 963, 969, 975, 981, 987, 993, 999
+};
+#endif
+
+
+
+DVBTune::DVBTune(RenderFarmClientThread *client)
+ : TunerServer(client)
+{
+ reset();
+ buffer_lock = new Mutex("DVBTune::buffer_lock");
+}
+
+DVBTune::~DVBTune()
+{
+ delete [] buffer;
+ delete buffer_lock;
+ delete thread;
+ delete status;
+}
+
+void DVBTune::reset()
+{
+ frontend_fd = -1;
+ audio_fd = -1;
+ video_fd = -1;
+ dvr_fd = -1;
+ buffer = 0;
+ buffer_size = 0;
+ buffer_allocated = 0;
+ thread = 0;
+ status = 0;
+ has_lock = 0;
+}
+
+int DVBTune::open_tuner()
+{
+#ifdef HAVE_DVB
+ char frontend_path[BCTEXTLEN];
+ char demux_path[BCTEXTLEN];
+ char dvr_path[BCTEXTLEN];
+
+ sprintf(frontend_path, "/dev/dvb/adapter%d/frontend%d",
+ get_device_number(),
+ 0);
+ sprintf(demux_path, "/dev/dvb/adapter%d/demux%d",
+ get_device_number(),
+ 0);
+ sprintf(dvr_path, "/dev/dvb/adapter%d/dvr%d",
+ get_device_number(),
+ 0);
+
+
+
+
+
+
+
+
+ if((frontend_fd = ::open(frontend_path, O_RDWR)) < 0)
+ {
+ fprintf(stderr,
+ "DVBTune::open_tuner %s: %s\n",
+ frontend_path,
+ strerror(errno));
+ return 1;
+ }
+
+
+// Open transport stream for reading
+ if((dvr_fd = ::open(dvr_path, O_RDONLY)) < 0)
+ {
+ fprintf(stderr,
+ "DVBTune::open_tuner %s: %s\n",
+ dvr_path,
+ strerror(errno));
+ return 1;
+ }
+
+ struct dvb_frontend_parameters frontend_param;
+ bzero(&frontend_param, sizeof(frontend_param));
+
+// Set frequency
+ int index = CLIP(TunerServer::get_channel(), 2, 69);
+ int table = TunerServer::get_table();
+ switch(table)
+ {
+ case NETTUNE_AIR:
+ frontend_param.frequency = ntsc_dvb[index] * 1000000;
+ frontend_param.u.vsb.modulation = VSB_8;
+ break;
+ case NETTUNE_CABLE:
+ frontend_param.frequency = catv_dvb[index] * 1000000;
+ frontend_param.u.vsb.modulation = QAM_AUTO;
+ break;
+ }
+
+
+ if(ioctl(frontend_fd, FE_SET_FRONTEND, &frontend_param) < 0)
+ {
+ fprintf(stderr,
+ "DVBTune::open_tuner FE_SET_FRONTEND frequency=%d: %s",
+ frontend_param.frequency,
+ strerror(errno));
+ return 1;
+ }
+
+ if((video_fd = ::open(demux_path, O_RDWR)) < 0)
+ {
+ fprintf(stderr,
+ "DVBTune::open_tuner %s for video: %s\n",
+ demux_path,
+ strerror(errno));
+ return 1;
+ }
+
+//printf("DVBTune::open_tuner 0x%x 0x%x\n", get_audio_pid(), get_video_pid());
+// Setting exactly one PES filter to 0x2000 dumps the entire
+// transport stream.
+ struct dmx_pes_filter_params pesfilter;
+ if(!get_video_pid() && !get_audio_pid())
+ {
+ pesfilter.pid = 0x2000;
+ pesfilter.input = DMX_IN_FRONTEND;
+ pesfilter.output = DMX_OUT_TS_TAP;
+ pesfilter.pes_type = DMX_PES_OTHER;
+ pesfilter.flags = DMX_IMMEDIATE_START;
+ if(ioctl(video_fd, DMX_SET_PES_FILTER, &pesfilter) < 0)
+ {
+ fprintf(stderr,
+ "DVBTune::open_tuner DMX_SET_PES_FILTER for raw: %s\n",
+ strerror(errno));
+ return 1;
+ }
+ }
+
+
+ if(get_video_pid())
+ {
+
+
+ pesfilter.pid = get_video_pid();
+ pesfilter.input = DMX_IN_FRONTEND;
+ pesfilter.output = DMX_OUT_TS_TAP;
+ pesfilter.pes_type = DMX_PES_VIDEO;
+ pesfilter.flags = DMX_IMMEDIATE_START;
+ if(ioctl(video_fd, DMX_SET_PES_FILTER, &pesfilter) < 0)
+ {
+ fprintf(stderr,
+ "DVBTune::open_tuner DMX_SET_PES_FILTER for video: %s\n",
+ strerror(errno));
+ return 1;
+ }
+ }
+
+ if(get_audio_pid())
+ {
+ if((audio_fd = ::open(demux_path, O_RDWR)) < 0)
+ {
+ fprintf(stderr,
+ "DVBTune::open_tuner %s for audio: %s\n",
+ demux_path,
+ strerror(errno));
+ return 1;
+ }
+
+ pesfilter.pid = get_audio_pid();
+ pesfilter.input = DMX_IN_FRONTEND;
+ pesfilter.output = DMX_OUT_TS_TAP;
+ pesfilter.pes_type = DMX_PES_AUDIO;
+ pesfilter.flags = DMX_IMMEDIATE_START;
+ if(ioctl(audio_fd, DMX_SET_PES_FILTER, &pesfilter) < 0)
+ {
+ fprintf(stderr,
+ "DVBTune::open_tuner DMX_SET_PES_FILTER for audio: %s\n",
+ strerror(errno));
+ return 1;
+ }
+ }
+
+
+
+
+
+
+ if(!thread)
+ {
+ thread = new DVBTuneThread(this);
+ thread->start();
+ }
+
+ if(!status)
+ {
+ status = new DVBTuneStatus(this);
+ status->start();
+ }
+ return 0;
+#endif
+ return 1;
+}
+
+int DVBTune::close_tuner()
+{
+ delete thread;
+ delete status;
+ delete [] buffer;
+
+ if(frontend_fd >= 0) close(frontend_fd);
+ if(audio_fd >= 0) close(audio_fd);
+ if(video_fd >= 0) close(video_fd);
+ if(dvr_fd >= 0) close(dvr_fd);
+ reset();
+
+ return 0;
+}
+
+
+
+int DVBTune::get_signal_strength(int *current_power, int *current_lock)
+{
+ if(has_lock)
+ {
+ *current_power = 10;
+ *current_lock = 1;
+ }
+ else
+ {
+ *current_power = 0;
+ *current_lock = 0;
+ }
+
+
+ return 0;
+}
+
+int DVBTune::read_data(unsigned char *data, int size)
+{
+ int buffer_size = 0;
+
+// Poll if not enough data
+ buffer_lock->lock("DVBTune::read_data 2");
+ buffer_size = this->buffer_size;
+ buffer_lock->unlock();
+
+ if(buffer_size < size)
+ {
+ usleep(100000);
+ return 0;
+ }
+
+
+// Copy data over
+ memcpy(data, buffer, size);
+// Shift buffer over
+ buffer_lock->lock("DVBTune::read_data 2");
+ int new_size = buffer_size - size;
+ for(int i = 0, j = size; i < new_size; i++, j++)
+ {
+ buffer[i] = buffer[j];
+ }
+ this->buffer_size -= size;
+ buffer_lock->unlock();
+
+ return size;
+}
+
+
+
+
+
+
+
+#define BUFFER_SIZE 0x100000
+#define MAX_BUFFER_SIZE 0x10000000
+DVBTuneThread::DVBTuneThread(DVBTune *server)
+ : Thread(1, 0, 0)
+{
+ this->server = server;
+ temp = new unsigned char[BUFFER_SIZE];
+}
+
+DVBTuneThread::~DVBTuneThread()
+{
+ Thread::cancel();
+ Thread::join();
+ delete [] temp;
+}
+
+void DVBTuneThread::run()
+{
+ while(1)
+ {
+ Thread::enable_cancel();
+
+// Pretend to be blocking if no signal
+ while(!server->has_lock)
+ {
+ usleep(1000000);
+ }
+
+
+ int result = ::read(server->dvr_fd, temp, BUFFER_SIZE);
+ Thread::disable_cancel();
+// This happens if buffer overrun.
+ if(result < 0)
+ {
+ printf("DVBTuneThread::run: %s\n", strerror(errno));
+ result = 0;
+ }
+ else
+// Discard if server full.
+ if(server->buffer_size > MAX_BUFFER_SIZE)
+ {
+ ;
+ }
+ else
+// Store in server buffer.
+ {
+ server->buffer_lock->lock("DVBTuneThread::run");
+ if(!server->buffer ||
+ server->buffer_allocated < server->buffer_size + result)
+ {
+ int new_allocation = server->buffer_size + result;
+ unsigned char *new_buffer = new unsigned char[new_allocation];
+ memcpy(new_buffer, server->buffer, server->buffer_size);
+ delete [] server->buffer;
+
+ server->buffer = new_buffer;
+ server->buffer_allocated = new_allocation;
+ }
+
+ memcpy(server->buffer + server->buffer_size, temp, result);
+ server->buffer_size += result;
+ server->buffer_lock->unlock();
+ }
+ }
+}
+
+
+
+
+
+
+
+
+
+
+
+DVBTuneStatus::DVBTuneStatus(DVBTune *server)
+ : Thread(1, 0, 0)
+{
+ this->server = server;
+}
+
+DVBTuneStatus::~DVBTuneStatus()
+{
+ Thread::cancel();
+ Thread::join();
+}
+
+void DVBTuneStatus::run()
+{
+#ifdef HAVE_DVB
+ while(1)
+ {
+ fe_status_t status;
+ uint16_t snr, signal;
+ uint32_t ber, uncorrected_blocks;
+
+
+ bzero(&status, sizeof(status));
+ Thread::enable_cancel();
+ ioctl(server->frontend_fd, FE_READ_STATUS, &status);
+ ioctl(server->frontend_fd, FE_READ_SIGNAL_STRENGTH, &signal);
+ ioctl(server->frontend_fd, FE_READ_SNR, &snr);
+ ioctl(server->frontend_fd, FE_READ_BER, &ber);
+ ioctl(server->frontend_fd, FE_READ_UNCORRECTED_BLOCKS, &uncorrected_blocks);
+ Thread::disable_cancel();
+
+// printf ("DVBTuneStatus::run %02x | signal %04x | snr %04x | "
+// "ber %08x | unc %08x | ",
+// status, signal, snr, ber, uncorrected_blocks);
+ if (status & FE_HAS_LOCK)
+ {
+ printf("DVBTuneStatus::run FE_HAS_LOCK\n");
+ }
+
+ if(status & FE_HAS_LOCK) server->has_lock = 1;
+ sleep(1);
+ }
+#endif
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
projects / goodguy / history.git / blobdiff