static int nsv_parse_NSVf_header(AVFormatContext *s) { NSVContext *nsv = s->priv_data; AVIOContext *pb = s->pb; unsigned int av_unused file_size; unsigned int size; int64_t duration; int strings_size; int table_entries; int table_entries_used; av_dlog(s, "%s()\n", __FUNCTION__); nsv->state = NSV_UNSYNC; /* in case we fail */ size = avio_rl32(pb); if (size < 28) return -1; nsv->NSVf_end = size; //s->file_size = (uint32_t)avio_rl32(pb); file_size = (uint32_t)avio_rl32(pb); av_dlog(s, "NSV NSVf chunk_size %u\n", size); av_dlog(s, "NSV NSVf file_size %u\n", file_size); nsv->duration = duration = avio_rl32(pb); /* in ms */ av_dlog(s, "NSV NSVf duration %"PRId64" ms\n", duration); // XXX: store it in AVStreams strings_size = avio_rl32(pb); table_entries = avio_rl32(pb); table_entries_used = avio_rl32(pb); av_dlog(s, "NSV NSVf info-strings size: %d, table entries: %d, bis %d\n", strings_size, table_entries, table_entries_used); if (pb->eof_reached) return -1; av_dlog(s, "NSV got header; filepos %"PRId64"\n", avio_tell(pb)); if (strings_size > 0) { char *strings; /* last byte will be '\0' to play safe with str*() */ char *p, *endp; char *token, *value; char quote; p = strings = av_mallocz(strings_size + 1); endp = strings + strings_size; avio_read(pb, strings, strings_size); while (p < endp) { while (*p == ' ') p++; /* strip out spaces */ if (p >= endp-2) break; token = p; p = strchr(p, '='); if (!p || p >= endp-2) break; *p++ = '\0'; quote = *p++; value = p; p = strchr(p, quote); if (!p || p >= endp) break; *p++ = '\0'; av_dlog(s, "NSV NSVf INFO: %s='%s'\n", token, value); av_dict_set(&s->metadata, token, value, 0); } av_free(strings); } if (pb->eof_reached) return -1; av_dlog(s, "NSV got infos; filepos %"PRId64"\n", avio_tell(pb)); if (table_entries_used > 0) { int i; nsv->index_entries = table_entries_used; if((unsigned)table_entries_used >= UINT_MAX / sizeof(uint32_t)) return -1; nsv->nsvs_file_offset = av_malloc((unsigned)table_entries_used * sizeof(uint32_t)); for(i=0;i<table_entries_used;i++) nsv->nsvs_file_offset[i] = avio_rl32(pb) + size; if(table_entries > table_entries_used && avio_rl32(pb) == MKTAG('T','O','C','2')) { nsv->nsvs_timestamps = av_malloc((unsigned)table_entries_used*sizeof(uint32_t)); for(i=0;i<table_entries_used;i++) { nsv->nsvs_timestamps[i] = avio_rl32(pb); } } } av_dlog(s, "NSV got index; filepos %"PRId64"\n", avio_tell(pb)); #ifdef DEBUG_DUMP_INDEX #define V(v) ((v<0x20 || v > 127)?'.':v) /* dump index */ av_dlog(s, "NSV %d INDEX ENTRIES:\n", table_entries); av_dlog(s, "NSV [dataoffset][fileoffset]\n", table_entries); for (i = 0; i < table_entries; i++) { unsigned char b[8]; avio_seek(pb, size + nsv->nsvs_file_offset[i], SEEK_SET); avio_read(pb, b, 8); av_dlog(s, "NSV [0x%08lx][0x%08lx]: %02x %02x %02x %02x %02x %02x %02x %02x" "%c%c%c%c%c%c%c%c\n", nsv->nsvs_file_offset[i], size + nsv->nsvs_file_offset[i], b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7], V(b[0]), V(b[1]), V(b[2]), V(b[3]), V(b[4]), V(b[5]), V(b[6]), V(b[7]) ); } //avio_seek(pb, size, SEEK_SET); /* go back to end of header */ #undef V #endif avio_seek(pb, nsv->base_offset + size, SEEK_SET); /* required for dumbdriving-271.nsv (2 extra bytes) */ if (pb->eof_reached) return -1; nsv->state = NSV_HAS_READ_NSVF; return 0; }