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Diffstat (limited to 'test/test_sections.c')
| -rw-r--r-- | test/test_sections.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/test/test_sections.c b/test/test_sections.c new file mode 100644 index 0000000..d567db0 --- /dev/null +++ b/test/test_sections.c @@ -0,0 +1,197 @@ +/* test_sections.c - Test for section filters. + * usage: DEMUX=/dev/dvb/adapterX/demuxX test_sections [PID [TID]] + * + * Copyright (C) 2002 convergence GmbH + * Johannes Stezenbach <js@convergence.de> + * + * This program 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 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 Lesser 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 <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <sys/ioctl.h> +#include <errno.h> + +#include <linux/dvb/dmx.h> + +#include "hex_dump.h" + +#define MAX_SECTION_SIZE 8192 + + +#if !defined(DMX_FILTER_SIZE) +#define DMX_FILTER_SIZE 16 +#endif + +static void parse_filter(unsigned char* filter, const char* filter_desc) +{ + int filter_idx; + char* end_ptr; + + memset(filter, '\0', DMX_FILTER_SIZE); + + for (filter_idx = 1; /* Leave first byte for tid */ + filter_idx < DMX_FILTER_SIZE-1; ++filter_idx) { + filter[filter_idx] = strtoul(filter_desc, &end_ptr, 0); + + if (*end_ptr == '\0' || end_ptr == filter_desc) + break; + + filter_desc = end_ptr; + } +} + +void usage(void) +{ + fprintf(stderr, "usage: test_sections PID [TID] [FILTER] [MASK]\n"); + fprintf(stderr, " The default demux device used can be changed\n"); + fprintf(stderr, " using the DEMUX environment variable;\n"); + fprintf(stderr, " set env BUFFER to play with DMX_SET_BUFFER_SIZE\n"); + fprintf(stderr, "\n"); + fprintf(stderr, " The optional filter and mask may be used to filter on\n"); + fprintf(stderr, " additional bytes. These bytes may be given in hex or dec\n"); + fprintf(stderr, " separated by spaces (hint: you may have to use quotes around\n"); + fprintf(stderr, " FILTER and MASK). TID is always the first byte of the filter,\n"); + fprintf(stderr, " and the first byte from FILTER applies to byte 3 of the section\n"); + fprintf(stderr, " data (i.e. the first byte after the section length)\n"); + exit(1); +} + + +void process_section(int fd) +{ + uint8_t buf[MAX_SECTION_SIZE]; + int bytes; + + bytes = read(fd, buf, sizeof(buf)); + if (bytes < 0) { + perror("read"); + if (errno != EOVERFLOW) + exit(1); + } + hex_dump(buf, bytes); + printf("\n"); +} + +int set_filter(int fd, unsigned int pid, + const unsigned char* filter, const unsigned char* mask) +{ + struct dmx_sct_filter_params f; + unsigned long bufsz; + + if (getenv("BUFFER")) { + bufsz=strtoul(getenv("BUFFER"), NULL, 0); + if (bufsz > 0 && bufsz <= MAX_SECTION_SIZE) { + fprintf(stderr, "DMX_SET_BUFFER_SIZE %lu\n", bufsz); + if (ioctl(fd, DMX_SET_BUFFER_SIZE, bufsz) == -1) { + perror("DMX_SET_BUFFER_SIZE"); + return 1; + } + } + } + memset(&f.filter, 0, sizeof(struct dmx_filter)); + f.pid = (uint16_t) pid; + + memcpy(f.filter.filter, filter, DMX_FILTER_SIZE); + memcpy(f.filter.mask, mask, DMX_FILTER_SIZE); + f.timeout = 0; + f.flags = DMX_IMMEDIATE_START | DMX_CHECK_CRC; + + if (ioctl(fd, DMX_SET_FILTER, &f) == -1) { + perror("DMX_SET_FILTER"); + return 1; + } + return 0; +} + +int main(int argc, char *argv[]) +{ + int dmxfd; + unsigned long pid, tid; + char * dmxdev = "/dev/dvb/adapter0/demux0"; + unsigned char filter[DMX_FILTER_SIZE]; + unsigned char mask[DMX_FILTER_SIZE]; + int filter_idx; + + if (argc < 2 || argc > 5) + usage(); + + pid = strtoul(argv[1], NULL, 0); + if (pid > 0x1fff) + usage(); + if (argc > 2) { + tid = strtoul(argv[2], NULL, 0); + if (tid > 0xff) + usage(); + } else + tid = 0x100; + + if (argc > 3) + parse_filter(filter, argv[3]); + else + memset(filter, '\0', sizeof(filter)); + + if (argc > 4) + parse_filter(mask, argv[4]); + else + memset(mask, '\0', sizeof(mask)); + + if (tid < 0x100) { + filter[0] = tid; + mask[0] = 0xff; + } + + if (getenv("DEMUX")) + dmxdev = getenv("DEMUX"); + fprintf(stderr, "test_sections: using '%s'\n", dmxdev); + fprintf(stderr, " PID 0x%04lx\n", pid); + if (tid < 0x100) + fprintf(stderr, " TID 0x%02lx\n", tid); + + + fprintf(stderr, " Filter "); + + for (filter_idx = 0; filter_idx < DMX_FILTER_SIZE; ++filter_idx) + fprintf(stderr, "0x%.2x ", filter[filter_idx]); + fprintf(stderr, "\n"); + + fprintf(stderr, " Mask "); + + for (filter_idx = 0; filter_idx < DMX_FILTER_SIZE; ++filter_idx) + fprintf(stderr, "0x%.2x ", mask[filter_idx]); + + fprintf(stderr, "\n"); + + if ((dmxfd = open(dmxdev, O_RDWR)) < 0){ + perror("open"); + return 1; + } + + if (set_filter(dmxfd, pid, filter, mask) != 0) + return 1; + + for (;;) { + process_section(dmxfd); + } + + close(dmxfd); + return 0; +} + |