1. Thumbnail view of pdf pages.
2. Bookmark options.
3. Hyper-link Options.
> 1. Thumbnail view of pdf pages.
You can obtain thumbnails and PDF bitmaps using 'pdftron.PDF.PDFDraw'. There is also a sample project called PDFDraw illustrating the basic use of this class.
> 2. Bookmark options.
You can access (and manipulate) document outline as shown in the Bookmarks sample project (http://www.pdftron.com/pdfnet/samplecode.html#Bookmark). At some point we will also extend the viewer sample to include bookmarks panel.
> 3. Hyper-link Options.
Could you please describe the requirement in more details. Link navigation is already supported in the sample and the tools module can be tweaked to customize the UI.
> 4. Video and Audio files should be play inside pdf
You can use PDFNet API (https://groups.google.com/d/topic/pdfnet-sdk/0-9tjRVpG9U) to extract vide and avi streams from PDF. These streams can then be played using native Android API.