It's exactly as Andrew described it. There are two codec registries, one for vendor supplied codecs and one for OpenCore software codecs. If it is unable to find a vendor codec that satisfies the input/output requirements, it falls back to OpenCore software codec. The reason for that is that you may need multiple instances of a codec at the same time. If there are no vendor codecs, then there is only one registry.
Example: Imagine you are playing MP3 in the background and the user's selected ringtone is an MP3 file. While the music is playing, the phone rings. The MP3 player is probably using the hardware codec (it usually consumes less power than software codec), so when the ringtone starts up, the PV framework instantiates a software codec instead. On Dec 10, 6:32 am, John <[EMAIL PROTECTED]> wrote: > Thx Andrew. > According to my knowledge, besides OMX method(either vendor-specific or > opencore's OMX wrapper), opencore still has its' own software based > codec(/mydroid/external/opencore/codecs_v2/video and audio). I'm confusing > how they handle the selection between software based codec and OMX codec > (either vendor-specific or opencore's OMX wrapper). > > John > > On Tue, Dec 9, 2008 at 5:49 PM, Andrew Green <[EMAIL PROTECTED]> wrote: > > > Inside the file > > /mydroid/external/opencore/codecs_v2/omx/omx_common/src/pv_omxmastercore.cpp > > the function PV_MasterOMX_Init() loops through two sets of OMX cores. The > > first is a vendor-specific OMX core that will offer up vendor-specific OMX > > components. If a valid vendor-specific OMX codec is not found then the > > OpenCORE OMX codecs are iterated through as the backup. > > > Andrew > > > > Date: Tue, 9 Dec 2008 14:17:42 -0800 > > > Subject: [android-porting] Can somebody explain how does the open core > > handle the selection between OPENMAX method and PV's own method? > > > From: [EMAIL PROTECTED] > > > To: [email protected] > > > > Can somebody explain how does the open core handle the selection > > > between OPENMAX method and PV's own method? > > > > John > > > _________________________________________________________________ > > Send e-mail faster without improving your typing skills. > > >http://windowslive.com/Explore/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_... --~--~---------~--~----~------------~-------~--~----~ unsubscribe: [EMAIL PROTECTED] website: http://groups.google.com/group/android-porting -~----------~----~----~----~------~----~------~--~---
