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-rw-r--r--util/szap/util.c153
1 files changed, 75 insertions, 78 deletions
diff --git a/util/szap/util.c b/util/szap/util.c
index 301d666..99d303a 100644
--- a/util/szap/util.c
+++ b/util/szap/util.c
@@ -35,92 +35,89 @@
int set_pesfilter(int dmxfd, int pid, int pes_type, int dvr)
{
- struct dmx_pes_filter_params pesfilter;
+ struct dmx_pes_filter_params pesfilter;
- /* ignore this pid to allow radio services */
- if (pid < 0 ||
- pid >= 0x1fff ||
- (pid == 0 && pes_type != DMX_PES_OTHER))
- return 0;
+ /* ignore this pid to allow radio services */
+ if (pid < 0 || pid >= 0x1fff || (pid == 0 && pes_type != DMX_PES_OTHER))
+ return 0;
+
+ if (dvr) {
+ int buffersize = 64 * 1024;
+ if (ioctl(dmxfd, DMX_SET_BUFFER_SIZE, buffersize) == -1)
+ perror("DMX_SET_BUFFER_SIZE failed");
+ }
- if (dvr) {
- int buffersize = 64 * 1024;
- if (ioctl(dmxfd, DMX_SET_BUFFER_SIZE, buffersize) == -1)
- perror("DMX_SET_BUFFER_SIZE failed");
- }
-
- pesfilter.pid = pid;
- pesfilter.input = DMX_IN_FRONTEND;
- pesfilter.output = dvr ? DMX_OUT_TS_TAP : DMX_OUT_DECODER;
- pesfilter.pes_type = pes_type;
- pesfilter.flags = DMX_IMMEDIATE_START;
-
- if (ioctl(dmxfd, DMX_SET_PES_FILTER, &pesfilter) == -1) {
- fprintf(stderr, "DMX_SET_PES_FILTER failed "
- "(PID = 0x%04x): %d %m\n", pid, errno);
- return -1;
- }
-
- return 0;
+ pesfilter.pid = pid;
+ pesfilter.input = DMX_IN_FRONTEND;
+ pesfilter.output = dvr ? DMX_OUT_TS_TAP : DMX_OUT_DECODER;
+ pesfilter.pes_type = pes_type;
+ pesfilter.flags = DMX_IMMEDIATE_START;
+
+ if (ioctl(dmxfd, DMX_SET_PES_FILTER, &pesfilter) == -1) {
+ fprintf(stderr, "DMX_SET_PES_FILTER failed "
+ "(PID = 0x%04x): %d %m\n", pid, errno);
+ return -1;
+ }
+ return 0;
}
int get_pmt_pid(char *dmxdev, int sid)
{
- int patfd, count;
- int pmt_pid = 0;
- int patread = 0;
- int section_length;
- unsigned char buft[4096];
- unsigned char *buf = buft;
- struct dmx_sct_filter_params f;
-
- memset(&f, 0, sizeof(f));
- f.pid = 0;
- f.filter.filter[0] = 0x00;
- f.filter.mask[0] = 0xff;
- f.timeout = 0;
- f.flags = DMX_IMMEDIATE_START | DMX_CHECK_CRC;
-
- if ((patfd = open(dmxdev, O_RDWR)) < 0) {
- perror("openening pat demux failed");
- return -1;
- }
-
- if (ioctl(patfd, DMX_SET_FILTER, &f) == -1) {
- perror("ioctl DMX_SET_FILTER failed");
- close(patfd);
- return -1;
- }
-
- while (!patread){
- if (((count = read(patfd, buf, sizeof(buft))) < 0) && errno == EOVERFLOW)
- count = read(patfd, buf, sizeof(buft));
- if (count < 0) {
- perror("read_sections: read error");
- close(patfd);
- return -1;
+ int patfd, count;
+ int pmt_pid = 0;
+ int patread = 0;
+ int section_length;
+ unsigned char buft[4096];
+ unsigned char *buf = buft;
+ struct dmx_sct_filter_params f;
+
+ memset(&f, 0, sizeof(f));
+ f.pid = 0;
+ f.filter.filter[0] = 0x00;
+ f.filter.mask[0] = 0xff;
+ f.timeout = 0;
+ f.flags = DMX_IMMEDIATE_START | DMX_CHECK_CRC;
+
+ if ((patfd = open(dmxdev, O_RDWR)) < 0) {
+ perror("openening pat demux failed");
+ return -1;
}
-
- section_length = ((buf[1] & 0x0f) << 8) | buf[2];
- if (count != section_length + 3)
- continue;
-
- buf += 8;
- section_length -= 8;
-
- patread = 1; /* assumes one section contains the whole pat */
- while (section_length > 0) {
- int service_id = (buf[0] << 8) | buf[1];
- if (service_id == sid) {
- pmt_pid = ((buf[2] & 0x1f) << 8) | buf[3];
- section_length = 0;
- }
- buf += 4;
- section_length -= 4;
+
+ if (ioctl(patfd, DMX_SET_FILTER, &f) == -1) {
+ perror("ioctl DMX_SET_FILTER failed");
+ close(patfd);
+ return -1;
}
- }
- close(patfd);
- return pmt_pid;
+ while (!patread) {
+ if (((count = read(patfd, buf, sizeof(buft))) < 0) && errno == EOVERFLOW)
+ count = read(patfd, buf, sizeof(buft));
+
+ if (count < 0) {
+ perror("read_sections: read error");
+ close(patfd);
+ return -1;
+ }
+ section_length = ((buf[1] & 0x0f) << 8) | buf[2];
+ if (count != section_length + 3)
+ continue;
+
+ buf += 8;
+ section_length -= 8;
+
+ patread = 1; /* assumes one section contains the whole pat */
+ while (section_length > 0) {
+ int service_id = (buf[0] << 8) | buf[1];
+
+ if (service_id == sid) {
+ pmt_pid = ((buf[2] & 0x1f) << 8) | buf[3];
+ section_length = 0;
+ }
+ buf += 4;
+ section_length -= 4;
+ }
+ }
+ close(patfd);
+ return pmt_pid;
}