All, There are some questions about CMEM and video driver, which need your help.
1. Does vpfe capture buffers located in Linux Memory space? If yes, how does them be transferred to DSP? I guess CODEC Engine will copy them into CMEM buffer pool first and then DSP will use these data in CMEM buffer pool, is it right? 2. Base on question 1, CODEC ENGINE copy the capture data use DMA? or memory copy? 3. When insert CMEM.ko, there are some parameters, such as pool counts and pool size, how can I determine these parameters when I use a certain codec combos, such as H264 encoder+ H264 decoder+mpeg4 decoder??? In TI's H264 encodedecode demo, I found "pools=1x3145728,3x829440,1x61440,1x10240" (loadmodules.sh), why there is a pool with 3145728 byte? 4. The CMEM memory is non-cacheable both for ARM and DSP? Thanks very much. George Gu (Xiangyu Gu) Wintech Digital System Co. Beijing, China Ph: 8610-8278-2828 ext.168 Fax: 8610-8278-0028 http://www.wintechdigtal.com _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
