src/dvb_utils.c

#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <assert.h>

#include "dvr_types.h"
#include "dvb_utils.h"
#include "dvr_utils.h"

/**
 * Set the demux's input source.
 * \param dmx_idx Demux device's index.
 * \param src The demux's input source.
 * \retval 0 On success.
 * \retval -1 On error.
 */
int dvb_set_demux_source (int dmx_idx, DVB_DemuxSource_t src)
{
	char        node[32];
	struct stat st;
	int         r;

	snprintf(node, sizeof(node), "/sys/class/stb/demux%d_source", dmx_idx);

	r = stat(node, &st);
	if (r == -1) {
		DVR_DEBUG(1, "cannot find \"%s\"", node);
	} else {
		char *val;

		switch (src) {
		case DVB_DEMUX_SOURCE_TS0:
			val = "ts0";
			break;
		case DVB_DEMUX_SOURCE_TS1:
			val = "ts1";
			break;
		case DVB_DEMUX_SOURCE_TS2:
			val = "ts2";
			break;
		case DVB_DEMUX_SOURCE_DMA0:
			val = "hiu";
			break;
		default:
			assert(0);
		}

		r = dvr_file_echo(node, val);
	}

	return r;
}