Ravi.. Thanks once again.. ~
On Thu, Dec 25, 2008 at 3:24 PM, rktb <[email protected]> wrote: > > 1. Yes. > > 2. <snip>We currently cannot pass buffers from the decoder node to the > source node. So, the parser node sends the data to the decoder node in > its own buffers, and in case the OMX component is adamant that it > wants to allocate it's own input buffer, then the contents of the > buffer from the source node is copied into the buffer provided by the > OMX component in the decoder node.</snip> > > > -Ravi > > On Dec 25, 2:03 pm, MMF <[email protected]> wrote: > > Hi Ravi, > > > > Thank you very much for your quick reply. > > I have few more specific questions, > > *1. *Let me explain my requirements. I want to use my own mp3 decoder > > algorithm which has the conditions that input and output buffers should > > always be available in a predefined memory area. For which I need to > write > > an OMX component and need to integrate the same in OpenCORE framework. > Which > > means I need to inform the mp3 OpenCORE node that my OMX component is > going > > to allocate the buffers. > > Now as explained by you the mp3 node will do a GetParam for > > "PV_OMX_COMPONENT_CAPABILITY_TYPE_INDEX". > > In my OMX component if i set PV capabilities > > (iOMXComponentSupportsExternalInputBufferAlloc and > > iOMXComponentSupportsExternalOutputBufferAlloc) to false then is this the > > correct way of informing the node that my OMX component is going to > allocate > > both input and output buffers? > > > > *2*. If my OMX component is allocating the buffers then how do i inform > the > > previous node ( in our case it is Source node i.e. mp3 parser node) that > use > > the input buffers allocated by my OMX component and do not allocate your > own > > buffers? > > > > I hope I am clear with my questions. > > > > Thanks again. > > ~ > > > > On Thu, Dec 25, 2008 at 12:33 PM, rktb <[email protected]> wrote: > > > > > 1. Source node has an output port. Decoder nodes, when present, have > > > both input and output ports. Sink node has an input port. Depending on > > > the datapath configuration, there are two possibilities: > > > (i) SourceOutPort--->DecInPort~~DecoderNode~~DecOutPort--->SinkInPort > > > (ii) SourceOutPort--->SinkInPort > > > > > The way these nodes are connected can be seen at engines/player/src/ > > > pv_player_datapath.cpp. > > > > > The header files pvmi/pvmf/include/pvmf_port_interface.h and pvmi/pvmf/ > > > include/pvmf_port_base_impl.h show you the port interface and describe > > > in brief the APIs used. Please refer these along with the nodes to see > > > how data is passed through. Please post any specific questions you > > > might have. > > > > > 2. Are you using a new decoder node for mp3 that interacts with your > > > OMX component or are you using the existing node? If so, I need more > > > information on your implementation. For the existing OMX audio decoder > > > node, we have the capability of querying the OMX components whether or > > > not they want to allocate their own buffers. This is done by calling > > > OMX_GetParameter() with a PV proprietary index > > > "PV_OMX_COMPONENT_CAPABILITY_TYPE_INDEX". Please refer the > > > openmax_call_sequences.pdf for the list of capabilities that can be > > > queried. We currently cannot pass buffers from the decoder node to the > > > source node. So, the parser node sends the data to the decoder node in > > > its own buffers, and in case the OMX component is adamant that it > > > wants to allocate it's own input buffer, then the contents of the > > > buffer from the source node is copied into the buffer provided by the > > > OMX component in the decoder node. > > > > > Here is some more information that was earlier provided: > > > > >http://groups.google.com/group/android-framework/browse_thread/thread. > .. > > > > > -Ravi > > > > > On Dec 25, 9:41 am, MMF <[email protected]> wrote: > > > > Hi All, > > > > > > I have some doubts regarding OpenCORE, > > > > > > *1. *Can someone please explain me how the ports actually send and > > > receive > > > > the buffers in a pipeline in OpenCORE. > > > > For example in mp3 pipeline I may have a parser node, a decoder node > and > > > > render node. > > > > How these 3 nodes actually setup the connection with each other and > how > > > the > > > > data flows( input and output buffers) flow through them. > > > > > > *2.* If my mp3 decoder node is using a OpenMAX component then in the > > > current > > > > source code input and output buffers are allocated by OpenCORE node > and > > > they > > > > have been communicated to OpenMAX component by calling UseBuffers(). > But > > > if > > > > I want my OpenMAX to allocate the input and output buffers then how > to do > > > > that? Are there any setting of parameters by which I can convey the > > > OpenCORE > > > > node that my underlying OpenMAX component will allocate the buffers. > > > Because > > > > I guess the input buffers are comming to mp3 node from parser node so > do > > > I > > > > need to make the modification in the parser node also? > > > > > > Thanks in advance > > > > ~ > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "android-framework" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-framework?hl=en -~----------~----~----~----~------~----~------~--~---
