videocap.h

jpeg and mpeg 编解码技术源代码

#ifndef __VIDEOCAP_H__
#define __VIDEOCAP_H__

#include "GUm.h"
#include "GCommDef.h"

#ifdef __cplusplus
extern "C" {
#endif	// __cplusplus

#define PWM_VIDEO_INIT					(WM_USER + 1)
#define PWM_VIDEO_START_WAIT_EVENT		(WM_USER + 2)
#define PWM_VIDEO_STOP_CAPTURE			(WM_USER + 3)
#define PWM_VIDEO_CLOSE_THREAD			(WM_USER + 4)

typedef struct _VIDEOCAP_INIT_CONFIG
{
	DWORD							dwTotalSlotNumber;
	COMMON_PHandleBufferFunction	pBufferFunction;
	LPBYTE							lpRegistryPath;
} VIDEOCAP_INIT_CONFIG, *PVIDEOCAP_INIT_CONFIG;
/*--------------------------------------
Members:
	dwTotalSlotNumber
		Indicate the total number of device slots in system.
	pBufferFunction
		Point to a function pointer that handles the video capture buffer.
	lpRegistryPath
		Point to a registry path string.
--------------------------------------*/

typedef struct _VIDEOCAP_LOGO
{
	DWORD			dwSlotNumber;
	LPBYTE			lpLogoBuffer;
	int				iLogoX;
	int				iLogoY;
} VIDEOCAP_LOGO, *PVIDEOCAP_LOGO;
/*--------------------------------------
Members:
	dwSlotNumber
		Indicate device's slot number.
	lpLogoBuffer
		Point to a logo data buffer with YCbCr 4:2:0 format.
	iLogoX
		Indicate the upper and left corner's x-coordinate of logo display area.
	iLogoY
		Indicate the upper and left corner's y-coordinate of logo display area.
--------------------------------------*/

typedef struct _VIDEOCAP_CAPTURE_CONFIG
{
	DWORD					dwSlotNumber;
	LPBYTE					lpLogoBuffer;
	int						iLogoX;
	int						iLogoY;
	MPJ_CaptureConfigValues	CaptureConfig;
	MPJ_CaptureConfigValid	ValidConfig;
	BOOL					fLVSSFirst;
	MPJ_StreamType			StreamType;
	BOOL					fAdjustQualityToBus;
	MPJ_PReportEvent		pVBVEvent;
	MPJ_PReportEvent		pOOSEvent;
	MPJ_PReportEvent		pTOEvent;
	MPJ_PReportEvent		pAOEvent;
	int						iOutOfSyncThreshold;
	int						iVideoTimeOut;
	MPJ_SessionID			*pSessionID;
} VIDEOCAP_CAPTURE_CONFIG, *PVIDEOCAP_CAPTURE_CONFIG;
/*--------------------------------------
Members:
	dwSlotNumber
		Indicate device's slot number.
	pLogoBuffer
		Point to a logo data buffer with YCbCr 4:2:0 format.
	iLogoX
		Indicate the upper and left corner's x-coordinate of logo display area.
	iLogoY
		Indicate the upper and left corner's y-coordinate of logo display area.
	CaptureConfig
		Points to an array that contains the setting for capture process. See
		User-Mode driver specification for detailed description of this array.
	ValidConfig
		Points to an array that receives validation result of the settings for
		capture process. See User-Mode driver specification for detailed
		description of this array.
	fLVSSFirst
		Indicate the first step of SnapShot function.
	StreamType
		Identcate the stream type for capture process.
		MPJ_VIDEO_STREAM	Capture video stream only.
		MPJ_AUDIO_STREAM	Capture audio stream only.  The board should support
							audio source input.
		MPJ_BOTH_STREAMS	Capture audio and video streams in the same time.
							The board should support audio source input.
	fAdjustQualityToBus
		If TRUE, it requests for quality adjustment for either MPEG/VBR stream
		or JPEG stream to assure host response for the device generated bit
		stream. This is set to FALSE in our application.
	pVBVEvent
		Point to an event object for VBV event handle. The VBV-Underflow status
		will be reported by signaling this event if it is not NULL. If NULL, the
		VBV-Underflow status will not be reported.
	pOOSEvent
		Point to an event object for OOS event handle. The Out-Of-Sync status
		will be reported by signaling this event if it is not NULL. If NULL, the
		Out-Of-Sync status will not be reported.
	pTOEvent
		Point to an event object for TO event handle. The Time-Out status will
		be reported by signaling this event if it is not NULL. If NULL, the
		Time-Out status will not be reported.
	pAOEvent
		Point to an event object for AO event handle. The Audio-Overflow status
		will be reported by signaling this event if it is not NULL. If NULL, the
		Audio-Overflow status will not be reported.
	iOutOfSyncThreshold
		The threshold is the number of successive frames after which an
		Out-Of-Sync event is requested to be generated. Set this to 0 means use
		a default value.
	iVideoTimeOut
		Time out, in seconds, for getting input video data to the host. Set this
		to 0 means use a default value.
	pSessionID
		Use to receive the session ID assigned by driver.
--------------------------------------*/

int WINAPI	VIDEOCAP_Open( PVIDEOCAP_INIT_CONFIG pInitConfig );
int WINAPI	VIDEOCAP_Close( void );
int WINAPI	VIDEOCAP_SetLogoData( PVIDEOCAP_LOGO pLogo );
int WINAPI	VIDEOCAP_AddBuffers( DWORD dwSlotNumber, BOOL fOneBufferOnly );
int WINAPI 	VIDEOCAP_StartWaitEvent( DWORD dwSlotNumber, HANDLE hVideoCaptureFinishEvent );
int WINAPI	VIDEOCAP_StartCapture( PVIDEOCAP_CAPTURE_CONFIG pVideoCaptureConfig );
int WINAPI	VIDEOCAP_Reset( DWORD dwSlotNumber );
//int WINAPI	VIDEOCAP_CompressSingleFrame_TwoSteps(