225     NSVContext *nsv = s->priv_data;  in nsv_resync()  local
230     av_dlog(s, "%s(), offset = %"PRId64", state = %d\n", __FUNCTION__, avio_tell(pb), nsv->state);  in nsv_resync()
237             nsv->state = NSV_UNSYNC;  in nsv_resync()
248             nsv->state = NSV_FOUND_BEEF;  in nsv_resync()
254             nsv->state = NSV_FOUND_NSVF;  in nsv_resync()
259             nsv->state = NSV_FOUND_NSVS;  in nsv_resync()
270     NSVContext *nsv = s->priv_data;  in nsv_parse_NSVf_header()  local
281     nsv->state = NSV_UNSYNC; /* in case we fail */  in nsv_parse_NSVf_header()
286     nsv->NSVf_end = size;  in nsv_parse_NSVf_header()
293     nsv->duration = duration = avio_rl32(pb); /* in ms */  in nsv_parse_NSVf_header()
346         nsv->index_entries = table_entries_used;  in nsv_parse_NSVf_header()
349         nsv->nsvs_file_offset = av_malloc((unsigned)table_entries_used * sizeof(uint32_t));  in nsv_parse_NSVf_header()
350         if (!nsv->nsvs_file_offset)  in nsv_parse_NSVf_header()
354             nsv->nsvs_file_offset[i] = avio_rl32(pb) + size;  in nsv_parse_NSVf_header()
358             nsv->nsvs_timestamps = av_malloc((unsigned)table_entries_used*sizeof(uint32_t));  in nsv_parse_NSVf_header()
359             if (!nsv->nsvs_timestamps)  in nsv_parse_NSVf_header()
362                 nsv->nsvs_timestamps[i] = avio_rl32(pb);  in nsv_parse_NSVf_header()
369 …avio_seek(pb, nsv->base_offset + size, SEEK_SET); /* required for dumbdriving-271.nsv (2 extra byt…  in nsv_parse_NSVf_header()
373     nsv->state = NSV_HAS_READ_NSVF;  in nsv_parse_NSVf_header()
379     NSVContext *nsv = s->priv_data;  in nsv_parse_NSVs_header()  local
416     nsv->avsync = avio_rl16(pb);  in nsv_parse_NSVs_header()
417     nsv->framerate = framerate;  in nsv_parse_NSVs_header()
425         nsv->vtag = vtag;  in nsv_parse_NSVs_header()
426         nsv->atag = atag;  in nsv_parse_NSVs_header()
427         nsv->vwidth = vwidth;  in nsv_parse_NSVs_header()
428         nsv->vheight = vwidth;  in nsv_parse_NSVs_header()
449             st->duration = av_rescale(nsv->duration, framerate.num, 1000*framerate.den);  in nsv_parse_NSVs_header()
451             for(i=0;i<nsv->index_entries;i++) {  in nsv_parse_NSVs_header()
452                 if(nsv->nsvs_timestamps) {  in nsv_parse_NSVs_header()
453                     av_add_index_entry(st, nsv->nsvs_file_offset[i], nsv->nsvs_timestamps[i],  in nsv_parse_NSVs_header()
456 …    int64_t ts = av_rescale(i*nsv->duration/nsv->index_entries, framerate.num, 1000*framerate.den);  in nsv_parse_NSVs_header()
457                     av_add_index_entry(st, nsv->nsvs_file_offset[i], ts, 0, 0, AVINDEX_KEYFRAME);  in nsv_parse_NSVs_header()
480             st->duration = (int64_t)nsv->duration * framerate.num;  in nsv_parse_NSVs_header()
483 …   if (nsv->vtag != vtag || nsv->atag != atag || nsv->vwidth != vwidth || nsv->vheight != vwidth) {  in nsv_parse_NSVs_header()
489     nsv->state = NSV_HAS_READ_NSVS;  in nsv_parse_NSVs_header()
493     nsv->state = NSV_UNSYNC;  in nsv_parse_NSVs_header()
499     NSVContext *nsv = s->priv_data;  in nsv_read_header()  local
505     nsv->state = NSV_UNSYNC;  in nsv_read_header()
506     nsv->ahead[0].data = nsv->ahead[1].data = NULL;  in nsv_read_header()
511         if (nsv->state == NSV_FOUND_NSVF) {  in nsv_read_header()
517         if (nsv->state == NSV_FOUND_NSVS) {  in nsv_read_header()
535     NSVContext *nsv = s->priv_data;  in nsv_read_chunk()  local
548     if (nsv->ahead[0].data || nsv->ahead[1].data)  in nsv_read_chunk()
555     for (i = 0; i < NSV_MAX_RESYNC_TRIES && nsv->state < NSV_FOUND_NSVS && !err; i++)  in nsv_read_chunk()
559     if (nsv->state == NSV_FOUND_NSVS)  in nsv_read_chunk()
563     if (nsv->state != NSV_HAS_READ_NSVS && nsv->state != NSV_FOUND_BEEF)  in nsv_read_chunk()
590         nsv->state = NSV_UNSYNC;  in nsv_read_chunk()
602         pkt = &nsv->ahead[NSV_ST_VIDEO];  in nsv_read_chunk()
606 …pkt->flags |= nsv->state == NSV_HAS_READ_NSVS ? AV_PKT_FLAG_KEY : 0; /* keyframe only likely on a …  in nsv_read_chunk()
615         pkt = &nsv->ahead[NSV_ST_AUDIO];  in nsv_read_chunk()
647 …pkt->flags |= nsv->state == NSV_HAS_READ_NSVS ? AV_PKT_FLAG_KEY : 0; /* keyframe only likely on a …  in nsv_read_chunk()
648         if( nsv->state == NSV_HAS_READ_NSVS && st[NSV_ST_VIDEO] ) {  in nsv_read_chunk()
651             pkt->dts *= (int64_t)1000        * nsv->framerate.den;  in nsv_read_chunk()
652             pkt->dts += (int64_t)nsv->avsync * nsv->framerate.num;  in nsv_read_chunk()
653             av_dlog(s, "NSV AUDIO: sync:%d, dts:%"PRId64, nsv->avsync, pkt->dts);  in nsv_read_chunk()
658     nsv->state = NSV_UNSYNC;  in nsv_read_chunk()
665     NSVContext *nsv = s->priv_data;  in nsv_read_packet()  local
671     if (!nsv->ahead[0].data && !nsv->ahead[1].data)  in nsv_read_packet()
678         if (nsv->ahead[i].data) {  in nsv_read_packet()
681             memcpy(pkt, &nsv->ahead[i], sizeof(AVPacket));  in nsv_read_packet()
682             nsv->ahead[i].data = NULL; /* we ate that one */  in nsv_read_packet()
693     NSVContext *nsv = s->priv_data;  in nsv_read_seek()  local
706     nsv->state = NSV_UNSYNC;  in nsv_read_seek()
712     NSVContext *nsv = s->priv_data;  in nsv_read_close()  local
714     av_freep(&nsv->nsvs_file_offset);  in nsv_read_close()
715     av_freep(&nsv->nsvs_timestamps);  in nsv_read_close()
716     if (nsv->ahead[0].data)  in nsv_read_close()
717         av_free_packet(&nsv->ahead[0]);  in nsv_read_close()
718     if (nsv->ahead[1].data)  in nsv_read_close()
719         av_free_packet(&nsv->ahead[1]);  in nsv_read_close()