Dear Ravi,
     The frame size is 352x288, and the frame rate is 15.
I think the mistake is taking place in the file CameraHardware.cpp,
which is taking the place of CameraHardwarestub.cpp and is part of HAL
to link to a physical camera sensor.
In the CameraHardwarestub.cpp, these functions are blank or just
return Unknown Error:

status_t CameraHardware::startRecording(recording_callback cb, void*
user)
{
    return UNKNOWN_ERROR;
}
void CameraHardware::stopRecording()
{
}
bool CameraHardware::recordingEnabled()
{
    return false;
}
void CameraHardware::releaseRecordingFrame(const sp<IMemory>& mem)
{
}

Maybe I should fill something in these function to make them work. But
I don't know how to do, could you help me?
Thank you very much for your help!

On 7月8日, 下午5时48分, RaviY <yend...@pv.com> wrote:
> What is the frame size that you are trying to encode? What is the
> frame rate?
>
> -Ravi
>
> On Jul 8, 4:27 am, Jack <zhang.sheng...@zte.com.cn> wrote:
>
>
>
> > Thank you RaviY! I fix the problem and get into the preview mode now!
> > Thank you very much for your help! But now I get an error when I press
> > start.
> > Would you please help me to fix it?
>
> > here is the log:
>
> > E/PVAE    (   55): PVMFVideoEncNode::Start
> > E/PVAE    (   55): PVAuthorEngineNodeUtility::Run: Exit
> > E/PVAE    (   55): PVMFVideoEncNode::Run
> > E/PVAE    (   55): PVMFVideoEncNode::DoStart
> > E/PVAE    (   55): PVMFVideoEncNode::DoPrepare:
> > CommonVideoEncoder::Initialize failed
> > E/PVAE    (   55): PVMFVideoEncNode::CommandComplete: Id=10006,
> > Type=6, Status=-1, Context=0x0, Data0x0
> > E/PVAE    (   55): PVAuthorEngineNodeUtility::NodeCommandCompleted
> > E/PVAE    (   55): PVAuthorEngineNodeUtility::NodeCommandCompleted:
> > Command failed - context=0x0, status=0xffffffff
> > E/PVAE    (   55): PVAuthorEngineNodeUtility::CompleteUtilityCmd:
> > aCmd.iType=7,  aStatus=0xffffffff
> > E/PVAE    (   55): PVAuthorEngine::NodeUtilCommandCompleted
> > E/PVAE    (   55): PVAuthorEngine::NodeUtilCommandCompleted cmdType:14
> > E/PVAE    (   55): PVAuthorEngine::SetPVAEState: aState=5
> > E/PVAE    (   55): PVAuthorEngineNodeUtility::GetCommandQueueSize:
> > size=1
> > E/PVAE    (   55): PVAuthorEngine::NodeUtilCommandCompleted
> > E/PVAE    (   55): PVAuthorEngine::NodeUtilCommandCompleted cmdType:14
> > E/PVAE    (   55): PVAuthorEngine::SetPVAEState: aState=5
> > E/PVAE    (   55): PVAuthorEngineNodeUtility::GetCommandQueueSize:
> > size=0
> > E/PVAE    (   55): PVAuthorEngine::CompleteEngineCommand:
> > aStatus=0xffffffff, aResponseData=0x0, aResponseDataSize=0
> > V/AuthorDriver(   55): Command (14) completed with status(-1)
> > E/MediaRecorder(  285): start failed: -2147483648
>
> > On 7月7日, 下午9时12分, RaviY <yend...@pv.com> wrote:
>
> > > All static libraries that you are adding should go inside
> > > LOCAL_WHOLE_STATIC_LIBRARIES of libopencoreauthor.
>
> > > On Jul 7, 7:08 am, Jack <zhang.sheng...@zte.com.cn> wrote:
>
> > > > Yes,  here's my android.mk in
> > > > external\opencore\nodes\pvvideoencnode\
> > > > ......
> > > > LOCAL_MODULE := libpvvideoencnode
>
> > > > LOCAL_CFLAGS :=   $(PV_CFLAGS)
>
> > > > LOCAL_C_INCLUDES := \
> > > >         $(PV_TOP)//nodes/pvvideoencnode/include \
> > > >         $(PV_TOP)//nodes/pvvideoencnode/src \
> > > >         $(PV_INCLUDES) \
> > > >         $(PV_TOP)//codecs_v2/video/m4v_h263/enc/include
>
> > > > LOCAL_STATIC_LIBRARIES +=libpvm4vencoder
>
> > > > # This lib defines the class CPVM4VEncoder
>
> > > > ......
>
> > > > On 7月7日, 下午7时49分, RaviY <yend...@pv.com> wrote:
>
> > > > > Did you check if the library that defines the function CPVM4VEncoder
> > > > > is part of the shared library as well?
>
> > > > > On Jul 7, 6:47 am, RaviY <yend...@pv.com> wrote:
>
> > > > > > -----Original Message-----
> > > > > > From: zhang.sheng...@zte.com.cn [mailto:zhang.sheng...@zte.com.cn]
> > > > > > Sent: Tue 7/7/2009 5:43 AM
> > > > > > To: Ravi K. Yenduri
> > > > > > Subject: Re: Prepare failed in MediaRecorder
>
> > > > > > Dear RaviY,
> > > > > >         Thanks very much for your selfless help! I tried to modify
> > > > > > the
> > > > > > Android.mk you mentioned in the last letter you sent, but these's
> > > > > > still
> > > > > > somthing wrong happened and I can not even pass the building system.
> > > > > > It is
> > > > > > said that the function named CPVM4VEncoder::New(int) called by 
> > > > > > Dostart
> > > > > > ()
> > > > > > in pvmf_videoenc_node.cpp is undefined. In order to fix the 
> > > > > > problem, I
> > > > > > had
> > > > > > to trouble you again. I will send the files that I changed as an
> > > > > > attachment in this letter. Would you please to check the mistake out
> > > > > > and
> > > > > > tell me how to fix it? You can compare them with the original 
> > > > > > version
> > > > > > from
> > > > > > cupcake_r1 and find the differences.
> > > > > >         Thank you! And best regards for you!
>
> > > > > > On Jul 6, 7:56 am, RaviY <yend...@pv.com> wrote:
> > > > > > > You may start looking 
> > > > > > > here.http://android.git.kernel.org/?p=platform/external/opencore.git;a=blo...
>
> > > > > > > On Jul 6, 2:58 am, Jack <zhang.sheng...@zte.com.cn> wrote:
>
> > > > > > > > Dear,RaviY,
> > > > > > > > I am glad to get your reply so soon. I tried to log
> > > > > > > > pvmf_videoenc_node.cpp and pvmf_videoenc_port.cpp, but it
> > > > > > > > seems that the two files are not included in the building 
> > > > > > > > system. I
> > > > > > > > changed these two files and rebuilt the system.img,
> > > > > > > > but still get the same log as past. I just get in touch with 
> > > > > > > > android
> > > > > > > > less than two months, so I don't know how it is going on and 
> > > > > > > > what to
> > > > > > > > do to fix this problem.
> > > > > > > > Thanks again for your help!
>
> > > > > > > > On 7月4日, 下午9时13分, RaviY <yend...@pv.com> wrote:
>
> > > > > > > > > Connect is failing. It probably is because of mismatched 
> > > > > > > > > parameters.
> > > > > > > > > Get the logs of pvmf_videoenc_node.cpp and 
> > > > > > > > > pvmf_videoenc_port.cpp.
> > > > > > > > > Also, try to attach the log file. It is easier to download 
> > > > > > > > > and read.
>
> > > > > > > > > On Jul 3, 11:23 pm, Jack Little <zhang.sheng...@zte.com.cn> 
> > > > > > > > > wrote:
>
> > > > > > > > > > Dear RaviY,
> > > > > > > > > > Thank you very much for your help!
> > > > > > > > > > I logged the file nodes/pvomxvideoencnode/src/
> > > > > > > > > > pvmf_omx_videoenc_node.cpp, and got the following result:
>
> > > > > > > > > > E/PVAE    (   55): PVMFVIdeoEncNode::DoPrepare
> > > > > > > > > > E/PVAE    (   55): PVMFOMXVideoEncNode::DoPrepare: 
> > > > > > > > > > Initializing OMX
> > > > > > > > > > component and encoder for role video_encoder.h263
> > > > > > > > > > E/PVAE    (   55): PVMFOMXVideoEncNode::DoPrepare(): There 
> > > > > > > > > > are 0
> > > > > > > > > > components of role video_encoder.h263
> > > > > > > > > > E/PVAE    (   55): PVMFOMXVideoEncNode::DoPrepare(): No 
> > > > > > > > > > component can
> > > > > > > > > > handle role video_encoder.h263 !
> > > > > > > > > > E/PVAE    (   55): PVMFOMXVideoEncNode::CommandComplete: 
> > > > > > > > > > Id=10005,
> > > > > > > > > > Type=5, Status=-17, Context=0x0, Data=0x0
> > > > > > > > > > E/PVAE    (   55): 
> > > > > > > > > > PVAuthorEngineNodeUtility::NodeCommandCompleted
> > > > > > > > > > E/PVAE    (   55): 
> > > > > > > > > > PVAuthorEngineNodeUtility::NodeCommandCompleted:
> > > > > > > > > > Command failed - context=0x0, status=0xffffffef
> > > > > > > > > > E/PVAE    (   55): 
> > > > > > > > > > PVAuthorEngineNodeUtility::CompleteUtilityCmd:
> > > > > > > > > > aCmd.iType=6,  aStatus=0xffffffef
>
> > > > > > > > > > So, is that means I had to use a software endocer until an 
> > > > > > > > > > updated
> > > > > > > > > > version for cupcake released or the hardware suppliers 
> > > > > > > > > > offer a
> > > > > > > > > > hardware encoder that cupcake supports?
>
> > > > > > > > > > And I have tried to replace the PVMFOMXVideoEncNode uuid 
> > > > > > > > > > and functions
> > > > > > > > > > with the corresponding ones from PVMFVideoEncNode, but now 
> > > > > > > > > > I got some
> > > > > > > > > > error in the
> > > > > > > > > > initialize process. The application returned some error 
> > > > > > > > > > even before
> > > > > > > > > > doing prepare().
>
> > > > > > > > > > Here's the log I got :
> > > > > > > > > > V/MediaRecorder(  277): setVideoEncoder(1)
> > > > > > > > > > V/PVMediaRecorder(   55): setVideoEncoder(1)
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngine::AddMediaTrack:
> > > > > > > > > > &aDataSource=0x19224, aComposer=0x19800, 
> > > > > > > > > > aConfigInterface=0x0,
> > > > > > > > > > aContextData=0x19f70
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngine::Run: Enter
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngine::DoAddMediaTrack
> > > > > > > > > > E/PVAE    (   55): 
> > > > > > > > > > PVAuthorEngine::IsCompressedFormatDataSource
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngine::DoAddMediaTrack:
> > > > > > > > > > compressedDataSrc=0
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngine::QueryNodeConfig: 
> > > > > > > > > > Configuration
> > > > > > > > > > interface available.
> > > > > > > > > > E/PVAE    (   55): 
> > > > > > > > > > PVAuthorEngineNodeUtility::QueryInterface:
> > > > > > > > > > &aNodeContainer=0x40508c34, &aUuid=0x40508cbc, aContext=0x0
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngineNodeUtility::AddCmdToQueue:
> > > > > > > > > > aCmd.iType=4
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngineNodeUtility::Init: 
> > > > > > > > > > aNode=0x1a638,
> > > > > > > > > > aContext=0x0
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngineNodeUtility::AddCmdToQueue:
> > > > > > > > > > aCmd.iType=5
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngineNodeUtility::Connect:
> > > > > > > > > > &aMasterNode=0x40508c74, aTag1=0, &aSlaveNode=0x40508c70, 
> > > > > > > > > > aTag2=1
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngineNodeUtility::AddCmdToQueue:
> > > > > > > > > > aCmd.iType=1
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngineNodeUtility::Connect:
> > > > > > > > > > &aMasterNode=0x40508c74, aTag1=1, &aSlaveNode=0x40508c70, 
> > > > > > > > > > aTag2=0
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngineNodeUtility::AddCmdToQueue:
> > > > > > > > > > aCmd.iType=1
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngine::Run: Exit
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngineNodeUtility::Run: Enter
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngineNodeUtility::Run: 
> > > > > > > > > > cmd.iType=4
> > > > > > > > > > E/PVAE    (   55): 
> > > > > > > > > > PVAuthorEngineNodeUtility::DoQueryInterface
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngineNodeUtility::Run: Exit
> > > > > > > > > > E/PVAE    (   55): 
> > > > > > > > > > PVAuthorEngineNodeUtility::NodeCommandCompleted
> > > > > > > > > > E/PVAE    (   55): 
> > > > > > > > > > PVAuthorEngineNodeUtility::CompleteQueryInterface
> > > > > > > > > > E/PVAE    (   55): 
> > > > > > > > > > PVAuthorEngineNodeUtility::CompleteUtilityCmd:
> > > > > > > > > > aCmd.iType=4,  aStatus=0x1
> > > > > > > > > > E/PVAE    (   55): PVAuthorEngine::NodeUtilCommandCompleted
> > > > > > > > > > E/PVAE    (   55):
>
> ...
>
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