+static void matroska_fix_ass_packet(MatroskaDemuxContext *matroska,
+ AVPacket *pkt, uint64_t display_duration)
+{
+ char *line, *layer, *ptr = pkt->data, *end = ptr+pkt->size;
+ for (; *ptr!=',' && ptr<end-1; ptr++);
+ if (*ptr == ',')
+ layer = ++ptr;
+ for (; *ptr!=',' && ptr<end-1; ptr++);
+ if (*ptr == ',') {
+ int64_t end_pts = pkt->pts + display_duration;
+ int sc = matroska->time_scale * pkt->pts / 10000000;
+ int ec = matroska->time_scale * end_pts / 10000000;
+ int sh, sm, ss, eh, em, es, len;
+ sh = sc/360000; sc -= 360000*sh;
+ sm = sc/ 6000; sc -= 6000*sm;
+ ss = sc/ 100; sc -= 100*ss;
+ eh = ec/360000; ec -= 360000*eh;
+ em = ec/ 6000; ec -= 6000*em;
+ es = ec/ 100; ec -= 100*es;
+ *ptr++ = '\0';
+ len = 50 + end-ptr + FF_INPUT_BUFFER_PADDING_SIZE;
+ if (!(line = av_malloc(len)))
+ return;
+ snprintf(line,len,"Dialogue: %s,%d:%02d:%02d.%02d,%d:%02d:%02d.%02d,%s\r\n",
+ layer, sh, sm, ss, sc, eh, em, es, ec, ptr);
+ av_free(pkt->data);
+ pkt->data = line;
+ pkt->size = strlen(line);
+ }
+}
+
+static void matroska_merge_packets(AVPacket *out, AVPacket *in)
+{
+ out->data = av_realloc(out->data, out->size+in->size);
+ memcpy(out->data+out->size, in->data, in->size);
+ out->size += in->size;
+ av_destruct_packet(in);
+ av_free(in);
+}
+