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authoretobi <git@e-tobi.net>2013-09-03 09:48:38 +0200
committeretobi <git@e-tobi.net>2013-09-03 09:48:38 +0200
commit6e40287e2f39a80fc72bd8d0fbc1a8334d688c2d (patch)
tree024bef311226653bdd1da4fa588becf5098bcff7 /test/test_pes.c
downloadlinux-dvb-apps-6e40287e2f39a80fc72bd8d0fbc1a8334d688c2d.tar.gz
Imported Upstream version 1.1.0upstream/1.1.0
Diffstat (limited to '')
-rw-r--r--test/test_pes.c137
1 files changed, 137 insertions, 0 deletions
diff --git a/test/test_pes.c b/test/test_pes.c
new file mode 100644
index 0000000..bd5a53e
--- /dev/null
+++ b/test/test_pes.c
@@ -0,0 +1,137 @@
+/* test_pes.c - Test for PES filters.
+ * usage: DEMUX=/dev/dvb/adapterX/demuxX test_pes PID
+ *
+ * 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 <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_PES_SIZE (4*1024)
+
+
+void usage(void)
+{
+ fprintf(stderr, "usage: test_pes PID [filename]\n");
+ fprintf(stderr, " Print a hexdump of PES packets from PID to stdout.\n");
+ fprintf(stderr, " filename : Write binary PES data to file (no hexdump).\n");
+ fprintf(stderr, " The default demux device used can be changed\n");
+ fprintf(stderr, " using the DEMUX environment variable\n");
+ exit(1);
+}
+
+void process_pes(int fd, FILE *out)
+{
+ uint8_t buf[MAX_PES_SIZE];
+ int bytes;
+
+ bytes = read(fd, buf, sizeof(buf));
+ if (bytes < 0) {
+ if (errno == EOVERFLOW) {
+ fprintf(stderr, "read error: buffer overflow (%d)\n",
+ EOVERFLOW);
+ return;
+ }
+ else {
+ perror("read");
+ exit(1);
+ }
+ }
+ if (out == stdout) {
+ hex_dump(buf, bytes);
+ printf("\n");
+ }
+ else {
+ printf("got %d bytes\n", bytes);
+ if (fwrite(buf, 1, bytes, out) == 0)
+ perror("write output");
+ }
+}
+
+int set_filter(int fd, unsigned int pid)
+{
+ struct dmx_pes_filter_params f;
+
+ f.pid = (uint16_t) pid;
+ f.input = DMX_IN_FRONTEND;
+ f.output = DMX_OUT_TAP;
+ f.pes_type = DMX_PES_OTHER;
+ f.flags = DMX_IMMEDIATE_START;
+ if (ioctl(fd, DMX_SET_PES_FILTER, &f) == -1) {
+ perror("ioctl DMX_SET_PES_FILTER");
+ return 1;
+ }
+ return 0;
+}
+
+
+int main(int argc, char *argv[])
+{
+ int dmxfd;
+ unsigned long pid;
+ char *dmxdev = "/dev/dvb/adapter0/demux0";
+ FILE *out = stdout;
+
+ if (argc != 2 && argc != 3)
+ usage();
+
+ pid = strtoul(argv[1], NULL, 0);
+ if (pid > 0x1fff)
+ usage();
+ if (getenv("DEMUX"))
+ dmxdev = getenv("DEMUX");
+
+ fprintf(stderr, "test_pes: using '%s'\n", dmxdev);
+ fprintf(stderr, " PID 0x%04lx\n", pid);
+
+ if (argc == 3) {
+ out = fopen(argv[2], "wb");
+ if (!out) {
+ perror("open output file");
+ exit(1);
+ }
+ fprintf(stderr, " output to '%s'\n", argv[2]);
+ }
+
+ if ((dmxfd = open(dmxdev, O_RDWR)) < 0){
+ perror("open");
+ return 1;
+ }
+
+ if (set_filter(dmxfd, pid) != 0)
+ return 1;
+
+ for (;;) {
+ process_pes(dmxfd, out);
+ }
+
+ close(dmxfd);
+ return 0;
+}