videoinedgedetection_system.c

这个是balckfin533/561的视频输入和输出的源代码

/*****************************************************************************

Copyright (c) 2006 Analog Devices, Inc.	All	Rights Reserved. 

This software is proprietary and confidential to Analog	Devices, Inc. 
and	its	licensors.

*****************************************************************************

$RCSfile: VideoInEdgeDetection_System.c,v $
$Revision: 1.3 $
$Date: 2006/07/06 07:26:28 $

Project:	BlackfinSDK (Edge Detection on ITU656 Video In)
Title:		System service routines
Author(s):	bmk
Revised	by:	

Description:
			Configures system, start devices and manages PPI/Pushbutton callbacks
			for Edge Detection on ITU 656 Video Input. 

References:
			None

*****************************************************************************
Tab	Setting:			4

Target Processor:		ADSP-BF5xx
Target Tools Revision:	ADSP VisualDSP++ v4.5
******************************************************************************

Modification History:
====================
$Log: VideoInEdgeDetection_System.c,v $
Revision 1.3  2006/07/06 07:26:28  bmk
modified project to use video utility file macros

Revision 1.2  2006/07/04 05:33:19  bmk
added Slide-show mode for BF533

Revision 1.1  2006/06/30 01:33:55  bmk
Initial entry


******************************************************************************
Include files
*****************************************************************************/

#include <VideoInEdgeDetection_System.h>	// Video In Edge Detection system includes
#include <drivers\encoder\adi_adv717x.h>	// video encoder driver includes
#include <drivers\decoder\adi_adv7183.h>	// video decoder driver includes
#include <drivers\twi\adi_twi.h>			// TWI driver includes
#include <SDK-ezkitutilities.h>				// EZ-Kit utility definitions

// Place all data in SDRAM
#pragma default_section (DATA,"sdram_bank1")

/*****************************************************************************
Macros
*****************************************************************************/
//local data and handles

#if defined(__ADSPBF533__)
// DMA Manager data :base memory +
//					 memory for 1 PPI DMA channels (For Video In or Video out) +
//					 memory for 2 MEMDMA channels (part of video from L3 to L1 for edge detection) +
//					 memory for 2 MEMDMA channels (Edge detected output from L1 to L3)
static u8 DMAMgrData[ADI_DMA_BASE_MEMORY + (ADI_DMA_CHANNEL_MEMORY * 5)];
// Device Manager data (base memory + memory for 1 video encoder/decoder, 1 twi, 1 PPI)
static u8 DevMgrData[ADI_DEV_BASE_MEMORY + (ADI_DEV_DEVICE_MEMORY * 3)];
// Interrupt Manager data
// (secondary interrupt for 3 Flags used as Push Buttons)
static u8 IntMgrData[(ADI_INT_SECONDARY_MEMORY * 3)];
// Flag Manager data - Flag pins used for Ez-Kit buttons (Callback memory for 3 flags)
static u8 FlagMgrData[(ADI_FLAG_CALLBACK_MEMORY * 3)];

#elif defined(__ADSPBF561__)

// DMA Manager data :base memory +
//					 memory for 2 PPI DMA channels (1 for Video In, 1 for Video out) +
//					 memory for 2 MEMDMA channels (part of video from L3 to L1 for edge detection) +
//					 memory for 2 MEMDMA channels (Edge detected output from L1 to L3)
static u8 DMAMgrData[ADI_DMA_BASE_MEMORY + (ADI_DMA_CHANNEL_MEMORY * 6)];
// Device Manager data (base memory + memory for 1 video encoder, 1 video decoder, 1 twi, 2 PPI)
static u8 DevMgrData[ADI_DEV_BASE_MEMORY + (ADI_DEV_DEVICE_MEMORY * 5)];
// Interrupt Manager data 
// (secondary interrupt memory for 2 DMA1 MDMA streams for sobel edge detection
// + 4 Flags used as Push buttons)
static u8 IntMgrData[(ADI_INT_SECONDARY_MEMORY * 6)];	// storage for interrupt manager
// Flag Manager data - Flag pins used for Ez-Kit buttons (Callback memory for 4 flags)
static u8 FlagMgrData[(ADI_FLAG_CALLBACK_MEMORY * 4)];

#else
#error "*** ERROR: Application doesnot support this processor yet ***"
#endif

// Deferred Callback Manager data (memory for 1 service plus 6 posted callbacks)
static u8 DCBMgrData[ADI_DCB_QUEUE_SIZE + (ADI_DCB_ENTRY_SIZE)*6];

/*********************************************************************
Local function prototypes
*********************************************************************/
// initialises Ez-Kit button
void		InitButton 			(ADI_FLAG_ID);

/*****************
Callback functions
******************/
// Exception handler
static		ADI_INT_HANDLER		(ExceptionHandler);
// Hardware error handler
static		ADI_INT_HANDLER		(HWErrorHandler);
// Video In callback function (for ADV7183)
static void VideoInCallback		(void *AppHandle, u32  Event, void *pArg);
// Video Out callback function (for ADV717x)
static void VideoOutCallback	(void *AppHandle, u32  Event, void *pArg);
// Ez-Kit Button press callback function
static void ButtonPressCallback	(void *AppHandle, u32  Event, void *pArg);

/*********************************************************************
Globals
**********************************************************************
Device Driver and System Services Handles
*****************************************/
ADI_DCB_HANDLE				DCBManagerHandle;		// handle to the callback service Manager
ADI_DMA_MANAGER_HANDLE 		DMAManagerHandle;		// handle to the DMA Manager
ADI_DEV_MANAGER_HANDLE 		DeviceManagerHandle;	// handle to the Device Manager
ADI_DEV_DEVICE_HANDLE 		ADV7183DeviceHandle;	// handle to the ADV7183 device driver
ADI_DEV_DEVICE_HANDLE 		ADV717xDeviceHandle;	// handle to the ADV717x device driver

EDGE_DETECTION_SYSTEM_FLAGS	SystemFlag;				// System Flags	

/*****************************************************************************
Device Configuration tables
*****************************************************************************/

#if defined(__ADSPBF533__)

	// BF533 Ports (PF0=SCL,PF1=SDA) & Timer(Timer 0) used for Pseudo TWI
	adi_twi_pseudo_port port={ADI_FLAG_PF0,ADI_FLAG_PF1,ADI_TMR_GP_TIMER_0,(ADI_INT_PERIPHERAL_ID)NULL};

#elif defined(__ADSPBF561__)	

	// BF561 Ports (PF0=SCL,PF1=SDA) & Timer(Timer 2) used for Pseudo TWI
	adi_twi_pseudo_port port={ADI_FLAG_PF0,ADI_FLAG_PF1,ADI_TMR_GP_TIMER_2,(ADI_INT_PERIPHERAL_ID)NULL};

#endif

#if defined(__ADSPBF533__) || defined (__ADSPBF561__)

	// Pseudo TWI Configuration	to access video encoder/decoder registers
	// Run TWI clock at 100MHz & 50% Duty Cycle
	adi_twi_bit_rate rate={100,50};

	ADI_DEV_CMD_VALUE_PAIR TWIConfig[]={	// configuration table for the TWI driver
		{ ADI_TWI_CMD_SET_PSEUDO,			(void *)(&port)					},
		{ ADI_DEV_CMD_SET_DATAFLOW_METHOD,	(void *)ADI_DEV_MODE_SEQ_CHAINED},
		{ ADI_TWI_CMD_SET_FIFO,				(void *)0x0000					},
		{ ADI_TWI_CMD_SET_RATE,				(void *)(&rate)					},
		{ ADI_TWI_CMD_SET_LOSTARB,			(void *)1						},
		{ ADI_TWI_CMD_SET_ANAK,				(void *)0						},
		{ ADI_TWI_CMD_SET_DNAK,				(void *)0						},
		{ ADI_DEV_CMD_SET_DATAFLOW,			(void *)TRUE					},
		{ ADI_DEV_CMD_END,					NULL							}
	};                	        

#else
#error "*** ERROR: Application doesnot support this processor yet ***"
#endif

/**************************************
ADV717x Register Configuration Tables
**************************************/

    // ADV717x register configuration table for PAL mode
    ADI_DEV_ACCESS_REGISTER ADV717x_PAL_Cfg[]={
        					{ADV717x_MR0,	0x05},		// register address, configuration data
    					   	{ADV717x_MR1,	0x10},
    					   	{ADV717x_MR2,	0x00},
    					   	{ADV717x_MR3,	0x00},
    					   	{ADV717x_MR4,	0x00},
    					   	{ADV717x_TMR0, 	0x08}, 
    					   	{ADV717x_TMR1, 	0x00},
    					   	{ADI_DEV_REGEND,0	}};		// End of register access
    					   	
    // ADV717x register configuration table for NTSC mode
    ADI_DEV_ACCESS_REGISTER ADV717x_NTSC_Cfg[]={
        					{ADV717x_MR0, 	0x00},		// register address, configuration data
    					   	{ADV717x_MR1, 	0x58},
    					   	{ADV717x_MR2, 	0x00},
    					   	{ADV717x_MR3, 	0x00},
    					   	{ADV717x_MR4, 	0x10},
    					   	{ADV717x_TMR0, 	0x00}, 
    					   	{ADV717x_TMR1, 	0x00},
    					   	{ADI_DEV_REGEND,0	}};		// End of register access    					   	

	// Video Encoder configuration table
	ADI_DEV_CMD_VALUE_PAIR VideoEncoderConfigTable [] = {	
		{ ADI_ADV717x_CMD_SET_TWI_CONFIG_TABLE,	(void *) TWIConfig						},	// TWI Configuration used for video encoder
// Set PPI Device number for video out
#if defined(__ADSPBF561__)
		{ ADI_ADV717x_CMD_SET_PPI_DEVICE_NUMBER,(void *) 1								},	// BF561 - PPI 1 used for Video out
#else
		{ ADI_ADV717x_CMD_SET_PPI_DEVICE_NUMBER,(void *) 0								},	// BF533 has only PPI 0
#endif		
		{ ADI_DEV_CMD_END,						NULL									},
	};

	// Video Decoder configuration table (leave the video format to default setting (NTSC))
	ADI_DEV_CMD_VALUE_PAIR VideoDecoderConfigTable [] = {	
		{ ADI_AD7183_CMD_SET_TWI_CONFIG_TABLE,	(void *) TWIConfig						},	// TWI Configuration used for video decoder
		{ ADI_AD7183_CMD_OPEN_PPI, 				(void *) 0								},	// Open PPI device for video in
		{ ADI_DEV_CMD_END,						NULL									},
	};

/*********************************************************************

    Function:       init_system

    Description:    Initialises EZ kit & Video Parameters

*********************************************************************/	
section("sdram_bank1")
void InitSystem(void)
{
       
	ezInit (1);				// Initialise Ez kit (This app uses only one core)	
	ezTurnOffAllLEDs ();	// Turn off all LEDs

// For BF533 & BF561, pull the video codec from reset mode
#if defined(__ADSPBF561__)

	// enable video encoder (7179)
	ezEnableVideoEncoder();     
    // enable video decoder (7183)
    ezEnableVideoDecoder();     

// For BF533 pull the video decoder from reset mode
#elif defined(__ADSPBF533__)

     // enable video decoder (7183)
    ezEnableVideoDecoder();
    // delay to stabilise 7183
    ezDelay(ADV7183_DELAY);
    
#endif	// (__ADSPBF561__)
	
	return;
}

/*********************************************************************

    Function:       install_system_services

    Description:    Installs system services

*********************************************************************/
// function implementations
section("sdram_bank1")
void InstallSystemServices(void)
{
	u32 ResponseCount;			// response counter

	// initialize the Interrupt Manager and hook the exception and hardware error interrupts
	ezErrorCheck(adi_int_Init(IntMgrData, sizeof(IntMgrData), &ResponseCount, NULL));
	ezErrorCheck(adi_int_CECHook(3, ExceptionHandler, NULL, FALSE));
	ezErrorCheck(adi_int_CECHook(5, HWErrorHandler, NULL, FALSE));
	// initialize the Deferred Callback Manager and setup a queue
	ezErrorCheck(adi_dcb_Init(&DCBMgrData[0], ADI_DCB_QUEUE_SIZE, &ResponseCount, NULL));
	ezErrorCheck(adi_dcb_Open(14, &DCBMgrData[ADI_DCB_QUEUE_SIZE], (ADI_DCB_ENTRY_SIZE)*4, &ResponseCount, &DCBManagerHandle));
	// initialize the Flag manager
	ezErrorCheck(adi_flag_Init(FlagMgrData, sizeof(FlagMgrData), &ResponseCount, NULL));	
	// initialize the DMA Manager
	ezErrorCheck(adi_dma_Init(DMAMgrData, sizeof(DMAMgrData), &ResponseCount, &DMAManagerHandle, NULL));
	// initialize the Device Manager
	ezErrorCheck(adi_dev_Init(DevMgrData, sizeof(DevMgrData), &ResponseCount, &DeviceManagerHandle, NULL));

	/*** Initialise flags corresponding to the Ez-Kit buttons ***/
	// Initialise the Termination button
	InitButton(TERMINATE_BUTTON);
	
#if defined(__ADSPBF561__)
	// Initialise the Update video mode button system status flag
	InitButton(UPDATE_VIDEO_MODE_BUTTON);
	// Clear Update Video Mode button 
	PBFlag.Video_Mode = FALSE;	
	// Initialise the Pause video button
	InitButton(PAUSE_FRAME_CAPTURE_BUTTON);	
#elif defined(__ADSPBF533__)
#if !defined(VIDEO_IN_SLIDE_SHOW)	// Conditional compilation macro to enable slide show mode
	// Initialise the Frame capture video button only when slide show mode is disabled
	InitButton(PAUSE_FRAME_CAPTURE_BUTTON);
	// Clear Frame capture button system status flag
	PBFlag.Frame_Capture = FALSE;
#endif
#endif	


	// Initialise the toggle display button
	InitButton(TOGGLE_DISPLAY_BUTTON);
	// Clear Toggle display button system status flag
	PBFlag.Toggle_Display= FALSE;
	

				
	SystemFlag.SobelDone			= TRUE;		// Mark sobel flag as done to start sobel conversion
	SystemFlag.SobelEnable			= TRUE;		// Enable sobel out
	SystemFlag.UpdateVideoMode		= FALSE;	// clear update video mode flag
	SystemFlag.Pause_Frame_Capture	= FALSE;	// clear pause video/frame capture flag	
	SystemFlag.FieldcopyDone		= FALSE;	// clear field copy done flag
	SystemFlag.UpdateVideoInBufs	= FALSE;	// clear buffer update flag (video in callback)
	SystemFlag.UpdateVideoOutBufs	= FALSE;	// clear buffer update flag (video out callback)
	pPausedBuffer 					= NULL;		// pointer to paused video 2D buffer
	ADV717xDeviceHandle				= NULL;		// clear ADV717xDeviceHandle to indicate this is a cold start
	
	return;
}

/*********************************************************************

    Function:       InitButton

    Description:    Initialises Blackfin Flags connected to
    				EZ-kit buttons