JV_PREAMBLE_SIZE 192 libavformat/jvdec.c if ((ret = av_new_packet(pkt, size + JV_PREAMBLE_SIZE)) < 0) JV_PREAMBLE_SIZE 197 libavformat/jvdec.c ret = avio_read(pb, pkt->data + JV_PREAMBLE_SIZE, size); JV_PREAMBLE_SIZE 201 libavformat/jvdec.c memset(pkt->data + JV_PREAMBLE_SIZE + ret, 0, JV_PREAMBLE_SIZE 205 libavformat/jvdec.c pkt->size = ret + JV_PREAMBLE_SIZE;