Question

Hi I have a plugin.dll which contains this all npp functions I have embeded it in my chrome plugin successfully but I dont know how to call this NPP_StreamAsFile function from my javascript. I dont have any idea. There are so many parameters to pass which I dont have any idea about . please help me.
Thanx in advance.

Answer 1

You don’t call NPP_StreamAsFile() yourself, the browser does. There are three types of functions for the NPAPI:

• NP_ – the plugin module entry functions etc.
• NPN_ – the browser interface, the plugin calls them
• NPP_ – the plugins interface, the browser calls them

You also can’t just access NPP functions directly from scripts, you’d have to provide a scriptable interface for your plugin.

From the plugin side, the process looks like following:

• first, the plugin needs to call NPN_NewStream() or NPN_GetURL() to create a stream
• if that worked, the browser calls NPP_NewStream(), you have to set *stype to NP_ASFILE or NP_ASFILEONLY
• if you specified NP_ASFILE and the file is not local, stream data is progressively delivered via NPP_Write()/NPP_WriteReady()
• when the stream is complete, the browser calls NPP_StreamAsFile().