120 lines
2.4 KiB
C
120 lines
2.4 KiB
C
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <time.h>
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#include <strings.h>
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#include "lint.h"
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struct descriptor *
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read_descriptor_header(struct epg *epg)
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{
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static struct descriptor d;
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if (epg->binsize - epg->offset < 2)
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return NULL;
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memcpy(&d, epg->bin + epg->offset, 2);
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epg->offset += 2;
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return &d;
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}
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void
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read_descriptor(struct epg *epg, struct descriptor *d)
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{
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switch (d->tag)
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{
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case 77:
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memcpy(d->content.d77.language, epg->bin + epg->offset, 3);
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epg->offset += 3;
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d->content.d77.namelen = epg->bin[epg->offset++];
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d->content.d77.name = read_string_len(epg->bin + epg->offset,
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d->content.d77.namelen);
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epg->offset += d->content.d77.namelen;
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d->content.d77.textlen = epg->bin[epg->offset++];
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d->content.d77.text = read_string_len(epg->bin + epg->offset,
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d->content.d77.textlen);
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epg->offset += d->content.d77.textlen;
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break;
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default:
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epg->offset += d->len;
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break;
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}
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}
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inline void
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skip_descriptor(struct epg *epg, struct descriptor *d)
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{
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epg->offset += d->len;
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}
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void
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free_descriptor(struct descriptor *d)
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{
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switch (d->tag)
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{
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case DS_SHORT_EVENT:
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free(d->content.d77.name);
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free(d->content.d77.text);
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break;
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default:
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break;
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}
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}
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char *
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descriptor_name(struct descriptor *d)
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{
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switch (d->tag)
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{
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case DS_LINKAGE: return "linkage";
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case DS_SHORT_EVENT: return "short event";
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case DS_COMPONENT: return "component";
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case DS_CONTENT: return "content";
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case DS_PRIVATE_DATA_SPECIFIER: return "private data spec.";
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case DS_CONTENT_IDENTIFIER: return "content id";
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case DS_FTA_CONTENT_MGMT: return "content mgmt";
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case DS_USER_DEFINED: return "user defined";
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default: return "Unknown";
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}
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return "Unknown";
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}
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void
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dump_descriptor(struct descriptor *d, int content)
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{
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printf("Descriptor header:\n");
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printf(" %30s: %#x [%d] (%s)\n", "descriptor", d->tag, d->tag,
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descriptor_name(d));
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DUMPINT(d, len);
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if (!content)
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return;
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switch (d->tag)
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{
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case DS_SHORT_EVENT:
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DUMPNSTR(d, content.d77.language, 3);
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DUMPINT(d, content.d77.namelen);
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//DUMPNSTR(d, content.d77.name, d->content.d77.namelen);
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DUMPHEX(d, content.d77.name, d->content.d77.namelen);
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DUMPINT(d, content.d77.textlen);
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//DUMPNSTR(d, content.d77.text, d->content.d77.textlen);
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DUMPHEX(d, content.d77.text, d->content.d77.textlen);
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break;
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default:
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break;
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}
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}
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