Imported Upstream version 1.1.1+rev1207upstream/1.1.1+rev1207

1 files changed, 255 insertions, 0 deletions

diff --git a/lib/libdvbapi/dvbdemux.c b/lib/libdvbapi/dvbdemux.c
new file mode 100644
index 0000000..a882af6
--- /dev/null
+++ b/lib/libdvbapi/dvbdemux.c
@@ -0,0 +1,255 @@
+/*
+ * libdvbdemux - a DVB demux library
+ *
+ * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <sys/param.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <ctype.h>
+#include <errno.h>
+#include <linux/dvb/dmx.h>
+#include "dvbdemux.h"
+
+
+int dvbdemux_open_demux(int adapter, int demuxdevice, int nonblocking)
+{
+	char filename[PATH_MAX+1];
+	int flags = O_RDWR;
+	int fd;
+
+	if (nonblocking)
+		flags |= O_NONBLOCK;
+
+	sprintf(filename, "/dev/dvb/adapter%i/demux%i", adapter, demuxdevice);
+	if ((fd = open(filename, flags)) < 0) {
+		// if that failed, try a flat /dev structure
+		sprintf(filename, "/dev/dvb%i.demux%i", adapter, demuxdevice);
+		fd = open(filename, flags);
+	}
+
+	return fd;
+}
+
+int dvbdemux_open_dvr(int adapter, int dvrdevice, int readonly, int nonblocking)
+{
+	char filename[PATH_MAX+1];
+	int flags = O_RDWR;
+	int fd;
+
+	if (readonly)
+		flags = O_RDONLY;
+	if (nonblocking)
+		flags |= O_NONBLOCK;
+
+	sprintf(filename, "/dev/dvb/adapter%i/dvr%i", adapter, dvrdevice);
+	if ((fd = open(filename, flags)) < 0) {
+		// if that failed, try a flat /dev structure
+		sprintf(filename, "/dev/dvb%i.dvr%i", adapter, dvrdevice);
+		fd = open(filename, flags);
+	}
+
+	return fd;
+}
+
+int dvbdemux_set_section_filter(int fd, int pid,
+				uint8_t filter[18], uint8_t mask[18],
+				int start, int checkcrc)
+{
+	struct dmx_sct_filter_params sctfilter;
+
+	memset(&sctfilter, 0, sizeof(sctfilter));
+	sctfilter.pid = pid;
+	memcpy(sctfilter.filter.filter, filter, 1);
+	memcpy(sctfilter.filter.filter+1, filter+3, 15);
+	memcpy(sctfilter.filter.mask, mask, 1);
+	memcpy(sctfilter.filter.mask+1, mask+3, 15);
+	memset(sctfilter.filter.mode, 0, 16);
+	if (start)
+		sctfilter.flags |= DMX_IMMEDIATE_START;
+	if (checkcrc)
+		sctfilter.flags |= DMX_CHECK_CRC;
+
+	return ioctl(fd, DMX_SET_FILTER, &sctfilter);
+}
+
+int dvbdemux_set_pes_filter(int fd, int pid,
+			    int input, int output,
+			    int pestype,
+			    int start)
+{
+	struct dmx_pes_filter_params filter;
+
+	memset(&filter, 0, sizeof(filter));
+	filter.pid = pid;
+
+	switch(input) {
+	case DVBDEMUX_INPUT_FRONTEND:
+		filter.input = DMX_IN_FRONTEND;
+		break;
+
+	case DVBDEMUX_INPUT_DVR:
+		filter.input = DMX_IN_DVR;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	switch(output) {
+	case DVBDEMUX_OUTPUT_DECODER:
+		filter.output = DMX_OUT_DECODER;
+		break;
+
+	case DVBDEMUX_OUTPUT_DEMUX:
+		filter.output = DMX_OUT_TAP;
+		break;
+
+	case DVBDEMUX_OUTPUT_DVR:
+		filter.output = DMX_OUT_TS_TAP;
+		break;
+
+#ifdef DMX_OUT_TSDEMUX_TAP
+	case DVBDEMUX_OUTPUT_TS_DEMUX:
+		filter.output = DMX_OUT_TSDEMUX_TAP;
+		break;
+#endif
+
+	default:
+		return -EINVAL;
+	}
+
+	switch(pestype) {
+	case DVBDEMUX_PESTYPE_AUDIO:
+		filter.pes_type = DMX_PES_AUDIO;
+		break;
+
+	case DVBDEMUX_PESTYPE_VIDEO:
+		filter.pes_type = DMX_PES_VIDEO;
+		break;
+
+	case DVBDEMUX_PESTYPE_TELETEXT:
+		filter.pes_type = DMX_PES_TELETEXT;
+		break;
+
+	case DVBDEMUX_PESTYPE_SUBTITLE:
+		filter.pes_type = DMX_PES_SUBTITLE;
+		break;
+
+	case DVBDEMUX_PESTYPE_PCR:
+		filter.pes_type = DMX_PES_PCR;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	if (start)
+		filter.flags |= DMX_IMMEDIATE_START;
+
+	return ioctl(fd, DMX_SET_PES_FILTER, &filter);
+}
+
+int dvbdemux_set_pid_filter(int fd, int pid,
+			    int input, int output,
+			    int start)
+{
+	struct dmx_pes_filter_params filter;
+
+	memset(&filter, 0, sizeof(filter));
+	if (pid == -1)
+		filter.pid = 0x2000;
+	else
+		filter.pid = pid;
+
+	switch(input) {
+	case DVBDEMUX_INPUT_FRONTEND:
+		filter.input = DMX_IN_FRONTEND;
+		break;
+
+	case DVBDEMUX_INPUT_DVR:
+		filter.input = DMX_IN_DVR;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	switch(output) {
+	case DVBDEMUX_OUTPUT_DECODER:
+		filter.output = DMX_OUT_DECODER;
+		break;
+
+	case DVBDEMUX_OUTPUT_DEMUX:
+		filter.output = DMX_OUT_TAP;
+		break;
+
+	case DVBDEMUX_OUTPUT_DVR:
+		filter.output = DMX_OUT_TS_TAP;
+		break;
+
+#ifdef DMX_OUT_TSDEMUX_TAP
+	case DVBDEMUX_OUTPUT_TS_DEMUX:
+		filter.output = DMX_OUT_TSDEMUX_TAP;
+		break;
+#endif
+
+	default:
+		return -EINVAL;
+	}
+
+	filter.pes_type = DMX_PES_OTHER;
+
+	if (start)
+		filter.flags |= DMX_IMMEDIATE_START;
+
+	return ioctl(fd, DMX_SET_PES_FILTER, &filter);
+}
+
+int dvbdemux_start(int fd)
+{
+	return ioctl(fd, DMX_START);
+}
+
+int dvbdemux_stop(int fd)
+{
+	return ioctl(fd, DMX_STOP);
+}
+
+int dvbdemux_get_stc(int fd, uint64_t *stc)
+{
+	struct dmx_stc _stc;
+	int result;
+
+	memset(stc, 0, sizeof(_stc));
+	if ((result = ioctl(fd, DMX_GET_STC, &_stc)) != 0) {
+		return result;
+	}
+
+	*stc = _stc.stc / _stc.base;
+	return 0;
+}
+
+int dvbdemux_set_buffer(int fd, int bufsize)
+{
+	return ioctl(fd, DMX_SET_BUFFER_SIZE, bufsize);
+}