search for: yuvbuffer

hi all, i'm trying to code a tool to get some images from a ogg/theora file .... so basically i need to get a frame and convert to rgb ... and here is my question (sorry, i'm newbe here) ... how to convert a yuv_buffer to a rgb matrix ? i tryied diferent ways but my mistakes are bassically cause i don't understant how yuv_buffer structure works ... anybody can help? thanks a lot.

...stream_state vorbisStreamState; ogg_stream_state theoraStreamState; theora_info theoraInfo; theora_comment theoraComment; theora_state theoraState; int theoraPageCount; yuv_buffer yuvBuffer; std::ifstream videoStream; void rewind (); void initMovie (); void exitMovie (); int buffer_data (); int queue_page (ogg_page *oggPage); vo...

...ie frame_width is the size of the frame and width is the size of the picture inside the frame. So now i'm completely confused. Could someone please clarify if the following is correct... theorainfo.frame_width = width of the inner picture region theorainfo.width = width of the outer frame yuvbuffer.y_stride = theorainfo.width = width of the outer frame yuvbuffer.y_width = theorainfo.frame_width = width of the inner picture region ??? Cheers, Zen.

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The attached patch splits Theora decode and YUV2RGB into separate threads. These are by far the two most computationally demanding components of Cortado, so by splitting them we can substantially improve performance on multiprocessor machines. I have verified that the patch does split these into two threads, and performance does appear to improve.