在Android中通过OpenMAX访问摄像头
在Android中通过OpenMAX访问摄像头
提问于 2012-03-29 18:02:08
目前，我试图弄清楚如何通过Android4.0中的OpenMAX来访问摄像头。这些文档对我来说是不够的，所以我目前很难找到正确的XADataSource来进行下面的调用。
(*_engine)->CreateMediaRecorder(_engine,
&_mediaRecorder, //pRecorder
nullptr, //pAudioSrc
XADataSource *, //pImageVideoSrc
XADataSink *, //pDataSnk
XAuint32, // numInterfaces
const XAInterfaceID *, //pInterfaceIds
const XAboolean *, //pInterfaceRequired
);请不要再用Java-“答案”了。
回答 2
Stack Overflow用户
发布于 2012-10-05 09:33:35
这基本上是XADataSource的定义，摘自http://www.khronos.org/registry/omxal/specs/OpenMAX_AL_1_1_Specification.pdf
typedef struct XADataSource_ {
void * pLocator;
void * pFormat;
} XADataSource;领域包括：
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对不起，没有更好的格式，但我建议，无论如何，如果你还没有检查该文件。
Stack Overflow用户
发布于 2017-02-26 06:26:11
安卓系统的实现只支持CreateMediaPlayer和播放MP2T H264 AAC流。
http://mobilepearls.com/labs/native-android-api/ndk/docs/openmaxal/
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/9930852
复制相关文章
相似问题
腾讯云开发者
