通过的OpenMAX在Android的访问摄像头 [英] Access camera via OpenMAX in Android
问题描述
目前,我试图找出如何通过的OpenMAX访问摄像机中的Android 4.0。该文件是不够的我,所以我现在跟我怎么可以检索正确的奋斗的XADataSource
以下电话。
I currently try to figure out how to access the Camera via OpenMAX in Android 4.0. The documentation is not sufficient for me so I currently struggle with how I can retrieve the correct XADataSource
for the following call.
(*_engine)->CreateMediaRecorder(_engine,
&_mediaRecorder, //pRecorder
nullptr, //pAudioSrc
XADataSource *, //pImageVideoSrc
XADataSink *, //pDataSnk
XAuint32, // numInterfaces
const XAInterfaceID *, //pInterfaceIds
const XAboolean *, //pInterfaceRequired
);
和请饶了我的只需使用Java 的 - 答案
And please spare me the just use Java-"answers".
推荐答案
这是基本的XADataSource的定义,从的 http://www.khronos.org/registry/omxal/specs/OpenMAX_AL_1_1_Specification.pdf
This is basically a definition of XADataSource, taken from http://www.khronos.org/registry/omxal/specs/OpenMAX_AL_1_1_Specification.pdf
typedef struct XADataSource_ {
void * pLocator;
void * pFormat;
} XADataSource;
字段包括:
Field Description
pLocator Pointer to the specified data locator structure. This may point to any of the following structures.
XADataLocator_Address
XADataLocator_IODevice
XADataLocator_URI
XADataLocator_MediaObject
XADataLocator_Null
XADataLocator_ContentPipe
The first field of each of these structures includes the 32 bit locatorType field, which identifies
the locator type (see XA_DATALOCATOR definitions) and hence the structure pointed to.
Note: The available XA_DATALOCATOR definitions may be extended through an API extension.
pFormat A pointer to the specified format structure. This may point to any of the following structures.
XADataFormat_PCM (Deprecated)
XADataFormat_PCM_EX
XADataFormat_MIME
XADataFormat_RawImage
The first field of each of these structures includes the 32 bit formatType field, which identifies the
format type (XA_DATAFORMAT definitions) and hence the structure pointed to. pFormat is ignored
if pLocator is XADataLocator_IODevice
抱歉不能更好的格式,但我建议无论如何要检查该文件,如果你还没有做到这一点。
Sorry couldn't format it better, but I suggest to check that document anyway if you haven't already done that.
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