1. add syntax handle to resolve the reference problem
2. move syntax group from dec to hal. dec only use syntax's reference pointer
3. change codec api init function interface from **ctx to *ctx
git-svn-id: https://10.10.10.66:8443/svn/MediaProcessPlatform/trunk/mpp@200 6e48237b-75ef-9749-8fc9-41990f28c85a
1. add syntax group for hal dec task management
2. separate mpp_dec and mpp_enc in mpp.cpp
3. separate decoder parser thread / decoder hal thread and encoder control thread / encoder hal thread
git-svn-id: https://10.10.10.66:8443/svn/MediaProcessPlatform/trunk/mpp@196 6e48237b-75ef-9749-8fc9-41990f28c85a
