evmdm642osd.h

DM642串口调试模块

/*
 *  Copyright 2003 by Texas Instruments Incorporated.
 *  All rights reserved. Property of Texas Instruments Incorporated.
 *  Restricted rights to use, duplicate or disclose this code are
 *  granted through contract.
 *  
 */
#ifndef _EVMDM642OSD_H
#define _EVMDM642OSD_H

#ifdef __cplusplus
extern "C" {
#endif


/* OSD color look-up table size, this is set by hardware and can not be changed */
#define EVMDM642OSD_CLUT_SIZE			128

/* OSD modes */
#define EVMDM642OSD_MODE_YCBCR_16BIT      0
#define EVMDM642OSD_MODE_YCBCR_8BIT       1

/* structure to encapsulate the color look-up table */
typedef struct EVMDM642OSD_CLUT {
    Uint32  table[EVMDM642OSD_CLUT_SIZE];
} EVMDM642OSD_CLUT;

/* definition of the OSD parameter structure */
typedef struct EVMDM642OSD_Params {
    EVMDM642OSD_CLUT *cLUT;   /* color look-up table */
    Int mode;                 /* osd mode            */
    Uint16 xStart;            /* horizontal offset of the OSD window in */
                              /* relative to start of active video      */
    Uint16 yStart;            /* vertical offset of the OSD window in   */
                              /* relative to start of active video      */
    Uint16 hSize;             /* horizontal size of osd window          */
    Uint16 vSize;             /* vertical size of osd window PER FIELD  */
                              
    Bool interlaced;          /* to specify whether video is interlaced */
    Int thrld;                /* threshold for generating EDMA events   */
    Int edmaPri;              /* EDMA priority                          */
    Int segId;                /* memory segment ID                      */
    Int alignment;            /* memory alignment                       */
    Int irqId;                /* EDMA irq id                            */
} EVMDM642OSD_Params;

/* osdPackets contains a OSD IO request that specifies location and size  */
/* information of a source pixel map. It also contains information on     */
/* where to the OSD buffer this pixel map is copied to and how long it    */
/* remains visible. If the numActiveFrms is other than 0, the data will   */
/* be on screen for the number of frames specified, if it is 0, the data  */
/* will be on screen until a new data buffer is provided to the driver    */
#define EVMDM642OSD_DISPLAY_FOREVER     0

typedef struct EVMDM642OSD_Packet {
    QUE_Elem link;           /* link for queuing */
    Int osdHOffset;          /* horizontal offset of the pixel map location */
                             /* relative to start of OSD window             */
    Int osdVOffset;          /* vertical offset of the pixel map location   */ 
    			             /* relative to start of OSD window             */
    Int osdHSize;            /* horizontal size of the pixel map            */
    Int osdVSize;            /* vertical size of the pixel map              */ 
    Int numActiveFrms;       /* number of frames pixel map remains visible  */
    Uint8 *buf;              /* pointer to pixel map buffer                 */
    Bool clearFrame;         /* indicate whether to clear OSD window before */
                             /* showing the pixel map                       */
    
}EVMDM642OSD_Packet;

/* OSD control commands */
#define EVMDM642OSD_CMD_RESET     0x00000001  /* reset osd module of the FPGA */
#define EVMDM642OSD_CMD_SET_CLUT  0x00000002  /* load color look-up table     */
#define EVMDM642OSD_CMD_CONFIG    0x00000003  /* configure OSD                */
#define EVMDM642OSD_CMD_START     0x00000004  /* start OSD operation          */
#define EVMDM642OSD_CMD_STOP      0x00000005  /* stop OSD operation           */

/* OSD IOM function table */
extern IOM_Fxns EVMDM642OSD_Fxns;


#ifdef __cplusplus
}
#endif

#endif  /* _EVMDM642OSD_H */