omx_camera_source_component.h

Go to the documentation of this file.

#ifndef _OMX_CAMERA_SOURCE_COMPONENT_H_
#define _OMX_CAMERA_SOURCE_COMPONENT_H_


#include <omx_base_source.h>
#include <omx_base_video_port.h>

#include <linux/videodev2.h>


/* Camera Component Port Index */
enum 
{
    OMX_CAMPORT_INDEX_VF = 0, /* preview/viewfinder */
    OMX_CAMPORT_INDEX_CP,       /* captured video */
    OMX_CAMPORT_INDEX_CP_T,   /* thumbnail or snapshot for captured video */
    OMX_CAMPORT_INDEX_MAX
};


#define NUM_CAMERAPORTS (OMX_CAMPORT_INDEX_MAX)

#define V4L2DEV_FILENAME  "/dev/video0" 



typedef __u32 V4L2_PICTURE_PIX_FMT;
typedef __u32 V4L2_PICTURE_DEPTHTYPE;

typedef struct V4L2_COLOR_FORMATTYPE
{
    V4L2_PICTURE_PIX_FMT v4l2Pixfmt;
    V4L2_PICTURE_DEPTHTYPE v4l2Depth;
} V4L2_COLOR_FORMATTYPE;

struct buffer
{
  OMX_U8* pCapAddrStart; /* Starting address for captured data */
  unsigned int length;
};

/* Queue for V4L mapping buffers.
 *  Note: This is the key structure of the camera component. According to V4L,
 *  there may be multiple buffers that can be requested for buffer capturing
 *  one after another. All these buffers form a cyclic queue.
 */
typedef struct OMX_V4L2_MAPBUFFER_QUEUETYPE
{
    OMX_U32 nNextCaptureIndex; /* Which index to perform capture request */
    OMX_U32 nNextWaitIndex; /* Which index to sync buffer */
    OMX_U32 nLastBufIndex; /* The last ready buffer that has not been sent to some port */
    OMX_U32 nBufCountTotal; /* Number of total involved buffers, including all buffers that has been started and not been sent to some port */
    OMX_U32 nBufCountCaptured; /* Number of captured bufers, including all ready buffers that has not been sent to some port */
    struct buffer *buffers; /* V4L2 buffer map information */
    OMX_U32 nFrame;
    OMX_TICKS *qTimeStampQueue; /* Queue to store time stamps for each buffer */
} OMX_V4L2_MAPBUFFER_QUEUETYPE;


DERIVEDCLASS(omx_camera_source_component_PortType, omx_base_video_PortType)
#define omx_camera_source_component_PortType_FIELDS omx_base_video_PortType_FIELDS \
 \
  OMX_U32 nIndexMapbufQueue;
ENDCLASS(omx_camera_source_component_PortType)




DERIVEDCLASS(omx_camera_source_component_PrivateType, omx_base_source_PrivateType)
#define omx_camera_source_component_PrivateType_FIELDS omx_base_source_PrivateType_FIELDS \
 \
  pthread_mutex_t idle_state_mutex; \
 \
  pthread_cond_t idle_wait_condition; \
 \
  pthread_cond_t idle_process_condition; \
 \
  OMX_BOOL bWaitingOnIdle; \
 \
  OMX_STATETYPE eLastState; \
 \
  OMX_PARAM_SENSORMODETYPE sSensorMode; \
 \
  OMX_U32 nFrameIntervalInMilliSec; \
 \
  OMX_COLOR_FORMATTYPE eOmxColorFormat; \
 \
  V4L2_COLOR_FORMATTYPE sV4lColorFormat; \
 \
  int fdCam; \
 \
  OMX_V4L2_MAPBUFFER_QUEUETYPE sMapbufQueue; \
 \
  OMX_U32 nLastCaptureTimeInMilliSec; \
 \
  pthread_mutex_t setconfig_mutex; \
 \
  OMX_BOOL bCapturing; \
 \
  OMX_BOOL bCapturingNext; \
 \
  OMX_BOOL bIsFirstFrame; \
 \
  OMX_BOOL bAutoPause; \
 \
  OMX_BOOL bThumbnailStart; \
 \
  OMX_U32 nCapturedCount; \
 \
  OMX_TICKS nRefWallTime; \
 \
  struct v4l2_capability cap; \
 \
  OMX_U32 oFrameSize; \
 \
  OMX_BOOL bOutBufferMemoryMapped; \
  /* @param cropcap input image cropping */ \
  struct v4l2_cropcap cropcap; \
  struct v4l2_crop crop; \
  /* @param fmt Stream data format */ \
  struct v4l2_format fmt;
ENDCLASS(omx_camera_source_component_PrivateType)



/* Component private entry points declaration */
OMX_ERRORTYPE omx_camera_source_component_Constructor(OMX_COMPONENTTYPE *openmaxStandComp,OMX_STRING cComponentName);

OMX_ERRORTYPE omx_camera_source_component_Destructor(OMX_COMPONENTTYPE *openmaxStandComp);

#endif

---

Generated for OpenMAX Bellagio rel. 0.3.5-svn by  1.5.1