218     NSVContext *nsv = s->priv_data;  in nsv_resync()  local
226             nsv->state = NSV_UNSYNC;  in nsv_resync()
237             nsv->state = NSV_FOUND_BEEF;  in nsv_resync()
243             nsv->state = NSV_FOUND_NSVF;  in nsv_resync()
248             nsv->state = NSV_FOUND_NSVS;  in nsv_resync()
259     NSVContext *nsv = s->priv_data;  in nsv_parse_NSVf_header()  local
268     nsv->state = NSV_UNSYNC; /* in case we fail */  in nsv_parse_NSVf_header()
270     if (nsv->nsvf) {  in nsv_parse_NSVf_header()
274     nsv->nsvf = 1;  in nsv_parse_NSVf_header()
279     nsv->NSVf_end = size;  in nsv_parse_NSVf_header()
285     nsv->duration = duration = avio_rl32(pb); /* in ms */  in nsv_parse_NSVf_header()
338         nsv->index_entries = table_entries_used;  in nsv_parse_NSVf_header()
341         nsv->nsvs_file_offset = av_malloc_array((unsigned)table_entries_used, sizeof(uint32_t));  in nsv_parse_NSVf_header()
342         if (!nsv->nsvs_file_offset)  in nsv_parse_NSVf_header()
348             nsv->nsvs_file_offset[i] = avio_rl32(pb) + size;  in nsv_parse_NSVf_header()
353             nsv->nsvs_timestamps = av_malloc_array((unsigned)table_entries_used, sizeof(uint32_t));  in nsv_parse_NSVf_header()
354             if (!nsv->nsvs_timestamps)  in nsv_parse_NSVf_header()
357                 nsv->nsvs_timestamps[i] = avio_rl32(pb);  in nsv_parse_NSVf_header()
364 …avio_seek(pb, nsv->base_offset + size, SEEK_SET); /* required for dumbdriving-271.nsv (2 extra byt…  in nsv_parse_NSVf_header()
368     nsv->state = NSV_HAS_READ_NSVF;  in nsv_parse_NSVf_header()
374     NSVContext *nsv = s->priv_data;  in nsv_parse_NSVs_header()  local
407     nsv->avsync = avio_rl16(pb);  in nsv_parse_NSVs_header()
408     nsv->framerate = framerate;  in nsv_parse_NSVs_header()
414         nsv->vtag = vtag;  in nsv_parse_NSVs_header()
415         nsv->atag = atag;  in nsv_parse_NSVs_header()
416         nsv->vwidth = vwidth;  in nsv_parse_NSVs_header()
417         nsv->vheight = vwidth;  in nsv_parse_NSVs_header()
438             st->duration = av_rescale(nsv->duration, framerate.num, 1000*framerate.den);  in nsv_parse_NSVs_header()
440             for(i=0;i<nsv->index_entries;i++) {  in nsv_parse_NSVs_header()
441                 if(nsv->nsvs_timestamps) {  in nsv_parse_NSVs_header()
442                     av_add_index_entry(st, nsv->nsvs_file_offset[i], nsv->nsvs_timestamps[i],  in nsv_parse_NSVs_header()
445 …    int64_t ts = av_rescale(i*nsv->duration/nsv->index_entries, framerate.num, 1000*framerate.den);  in nsv_parse_NSVs_header()
446                     av_add_index_entry(st, nsv->nsvs_file_offset[i], ts, 0, 0, AVINDEX_KEYFRAME);  in nsv_parse_NSVs_header()
469             st->duration = (int64_t)nsv->duration * framerate.num;  in nsv_parse_NSVs_header()
472 …   if (nsv->vtag != vtag || nsv->atag != atag || nsv->vwidth != vwidth || nsv->vheight != vwidth) {  in nsv_parse_NSVs_header()
478     nsv->state = NSV_HAS_READ_NSVS;  in nsv_parse_NSVs_header()
482     nsv->state = NSV_UNSYNC;  in nsv_parse_NSVs_header()
488     NSVContext *nsv = s->priv_data;  in nsv_read_header()  local
491     nsv->state = NSV_UNSYNC;  in nsv_read_header()
492     nsv->ahead[0].data = nsv->ahead[1].data = NULL;  in nsv_read_header()
497         if (nsv->state == NSV_FOUND_NSVF) {  in nsv_read_header()
503         if (nsv->state == NSV_FOUND_NSVS) {  in nsv_read_header()
521     NSVContext *nsv = s->priv_data;  in nsv_read_chunk()  local
533     if (nsv->ahead[0].data || nsv->ahead[1].data)  in nsv_read_chunk()
540     for (i = 0; i < NSV_MAX_RESYNC_TRIES && nsv->state < NSV_FOUND_NSVS && !err; i++)  in nsv_read_chunk()
544     if (nsv->state == NSV_FOUND_NSVS)  in nsv_read_chunk()
548     if (nsv->state != NSV_HAS_READ_NSVS && nsv->state != NSV_FOUND_BEEF)  in nsv_read_chunk()
569         nsv->state = NSV_UNSYNC;  in nsv_read_chunk()
581         pkt = &nsv->ahead[NSV_ST_VIDEO];  in nsv_read_chunk()
586 …pkt->flags |= nsv->state == NSV_HAS_READ_NSVS ? AV_PKT_FLAG_KEY : 0; /* keyframe only likely on a …  in nsv_read_chunk()
595         pkt = &nsv->ahead[NSV_ST_AUDIO];  in nsv_read_chunk()
627 …pkt->flags |= nsv->state == NSV_HAS_READ_NSVS ? AV_PKT_FLAG_KEY : 0; /* keyframe only likely on a …  in nsv_read_chunk()
628         if( nsv->state == NSV_HAS_READ_NSVS && st[NSV_ST_VIDEO] ) {  in nsv_read_chunk()
631             pkt->dts *= (int64_t)1000        * nsv->framerate.den;  in nsv_read_chunk()
632             pkt->dts += (int64_t)nsv->avsync * nsv->framerate.num;  in nsv_read_chunk()
633             av_log(s, AV_LOG_TRACE, "NSV AUDIO: sync:%d, dts:%"PRId64, nsv->avsync, pkt->dts);  in nsv_read_chunk()
638     nsv->state = NSV_UNSYNC;  in nsv_read_chunk()
645     NSVContext *nsv = s->priv_data;  in nsv_read_packet()  local
649     if (!nsv->ahead[0].data && !nsv->ahead[1].data)  in nsv_read_packet()
656         if (nsv->ahead[i].data) {  in nsv_read_packet()
658             memcpy(pkt, &nsv->ahead[i], sizeof(AVPacket));  in nsv_read_packet()
659             nsv->ahead[i].data = NULL; /* we ate that one */  in nsv_read_packet()
670     NSVContext *nsv = s->priv_data;  in nsv_read_seek()  local
683     nsv->state = NSV_UNSYNC;  in nsv_read_seek()
689     NSVContext *nsv = s->priv_data;  in nsv_read_close()  local
691     av_freep(&nsv->nsvs_file_offset);  in nsv_read_close()
692     av_freep(&nsv->nsvs_timestamps);  in nsv_read_close()
693     if (nsv->ahead[0].data)  in nsv_read_close()
694         av_packet_unref(&nsv->ahead[0]);  in nsv_read_close()
695     if (nsv->ahead[1].data)  in nsv_read_close()
696         av_packet_unref(&nsv->ahead[1]);  in nsv_read_close()