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blit.c：源码内容
							/*****************************************************************************
File name: blit.c
Description: blit setup
COPYRIGHT (C) 2004 STMicroelectronics
*****************************************************************************/
/* Includes --------------------------------------------------------------- */
#include <string.h>
#include "stddefs.h"
#include "stdevice.h"
#include "sttbx.h"
#include "gendef.h"
#include "section.h"
#include "errors.h"
#include "evt.h" /* for KB_EVT_OSD */
#include "avmem.h"
#include "blit.h"
#include "osd.h"
#include "osp.h"
/* Private Macros --------------------------------------------------------- */
#define NODE_MAX_NUMBER             1024
#define WORK_BUFFER_SIZE            1024
/* Private Types ---------------------------------------------------------- */
/* Private Constants ------------------------------------------------------ */
/* Private Variables ------------------------------------------------------ */
/* Private Function prototypes -------------------------------------------- */
static ST_ErrorCode_t BLIT_InitContext(STBLIT_BlitContext_t * BlitContext_p);
/* Constants -------------------------------------------------------------- */
/* Global Variables ------------------------------------------------------- */
ST_DeviceName_t BLIT_DeviceName = "BLIT";
STBLIT_Handle_t BLIT_Handle;
STBLIT_BlitContext_t GtBlitContext;
/* Functions -------------------------------------------------------------- */
/*-----------------------------------------------------------------------------
 * Function : BLIT_Init
 *
 * Input    :
 * Output   :
 * --------------------------------------------------------------------------*/
ST_ErrorCode_t BLIT_Setup(void)
{
    ST_ErrorCode_t          ErrCode;
    STBLIT_InitParams_t     InitParams;
    STBLIT_OpenParams_t     OpenParams;
    #if 1
    InitParams.DeviceType                 = STBLIT_DEVICE_TYPE_BDISP_5105;
    InitParams.BaseAddress_p              = (void*)BLITTER_BASE_ADDRESS;
    InitParams.SharedMemoryBaseAddress_p  = (void*)SDRAM_BASE_ADDRESS;
    InitParams.BlitInterruptEvent         = STBLIT_BLIT_COMPLETED_EVT;
    InitParams.CPUPartition_p             = SystemPartition;
    InitParams.AVMEMPartition             = g_KBAvmemPartitionHandle[0];
    strcpy(InitParams.EventHandlerName, g_KB_EVTDeviceName[KB_EVT_OSD]);
    InitParams.MaxHandles                 = 2;
    InitParams.SingleBlitNodeBufferUserAllocated = FALSE;
    InitParams.SingleBlitNodeMaxNumber    = NODE_MAX_NUMBER;
    InitParams.SingleBlitNodeBuffer_p     = NULL;
    InitParams.JobBlitNodeBufferUserAllocated    = FALSE;
    InitParams.JobBlitNodeMaxNumber       = 1;
    InitParams.JobBlitNodeBuffer_p        = NULL;
    InitParams.JobBlitBufferUserAllocated = FALSE;
    InitParams.JobBlitMaxNumber           = 1;
    InitParams.JobBlitBuffer_p            = NULL;
    InitParams.JobBufferUserAllocated     = FALSE;
    InitParams.JobMaxNumber               = 1;
    InitParams.JobBuffer_p                = NULL;
    InitParams.WorkBufferUserAllocated    = FALSE;
    InitParams.WorkBufferSize             = WORK_BUFFER_SIZE;
    InitParams.WorkBuffer_p               = NULL;
    InitParams.BigNotLittle               = FALSE;
    InitParams.BlitInterruptNumber        = BLIT_INTERRUPT;
    InitParams.BlitInterruptLevel         = BLIT_INTERRUPT_LEVEL;
    #else
    
        InitParams.SingleBlitNodeMaxNumber = 100; //500; //TTM 4000;
        
        InitParams.JobBlitNodeMaxNumber    = 1;
        InitParams.JobBlitMaxNumber        = 1;
        InitParams.JobMaxNumber            = 1;
        InitParams.WorkBufferSize          = WORK_BUFFER_SIZE;
        /*TMTM note: MinWorkBufferSize             = STBLIT_DEFAULT_FILTER_BUFFER_SIZE + STBLIT_ALPHA4TO8_CONVERSION_PALETTE_SIZE;
        //size to store the 5-TAP filter coefficients + Alpha4 to Alpha8 conversion palette */
        InitParams.CPUPartition_p = SystemPartition;
        
        InitParams.DeviceType    = STBLIT_DEVICE_TYPE_BDISP_5105;
        
        InitParams.BaseAddress_p = (void*)BLITTER_BASE_ADDRESS;
     /* (STBLIT_EMULATOR == TRUE) */
        InitParams.AVMEMPartition = g_KBAvmemPartitionHandle[0];
        InitParams.SharedMemoryBaseAddress_p = (void *)SDRAM_BASE_ADDRESS;
        strcpy( InitParams.EventHandlerName, g_KB_EVTDeviceName[KB_EVT_OSD]);
        InitParams.BlitInterruptEvent           = STBLIT_BLIT_COMPLETED_EVT;
        InitParams.BlitInterruptNumber          = BLIT_INTERRUPT;
        InitParams.BlitInterruptLevel           = BLIT_INTERRUPT_LEVEL;
        InitParams.MaxHandles                   = 5;
        InitParams.SingleBlitNodeBufferUserAllocated = FALSE;
        InitParams.SingleBlitNodeBuffer_p            = NULL;
        InitParams.JobBlitNodeBufferUserAllocated    = FALSE;
        //InitParams.JobBlitNodeMaxNumber       = 400;
        InitParams.JobBlitNodeBuffer_p               = NULL;
        InitParams.JobBlitBufferUserAllocated        = FALSE;
        InitParams.JobBlitBuffer_p                   = NULL;
        InitParams.JobBufferUserAllocated            = FALSE;
        InitParams.JobBuffer_p                       = NULL;
        InitParams.WorkBufferUserAllocated           = FALSE;
        InitParams.WorkBuffer_p                      = NULL;
        InitParams.BigNotLittle                      = FALSE;
        
    #endif
    STTBX_Print(("BLIT_Setup(%s)=",BLIT_DeviceName));
    ErrCode = STBLIT_Init(BLIT_DeviceName, &InitParams);
    if (ErrCode != ST_NO_ERROR)
    {
        STTBX_Print(("%sn", DBGError(ErrCode)));
        return( ErrCode );
    }
    ErrCode = STBLIT_Open(BLIT_DeviceName, &OpenParams, &BLIT_Handle);
    if (ErrCode != ST_NO_ERROR)
    {
        STTBX_Print(("%sn", DBGError(ErrCode)));
        return( ErrCode );
    }
    
    STTBX_Print(("%sn", STBLIT_GetRevision()));
    memset(&GtBlitContext, 0, sizeof(STBLIT_BlitContext_t));
    BLIT_InitContext(&GtBlitContext);
    return (ErrCode);
} /* end BLIT_Init */
static ST_ErrorCode_t BLIT_InitContext(STBLIT_BlitContext_t * BlitContext_p)
{
    STEVT_DeviceSubscribeParams_t EvtSubscribeParams;
    ST_ErrorCode_t          Err;
    STEVT_SubscriberID_t    SubscriberID;
    
    BlitContext_p->ColorKeyCopyMode          = STBLIT_COLOR_KEY_MODE_NONE;
    /* BlitContext_p->ColorKey                  = 0; undefined */
    BlitContext_p->AluMode                   = STBLIT_ALU_COPY;
    BlitContext_p->EnableMaskWord            = FALSE;
    /* BlitContext_p->MaskWord */
    BlitContext_p->EnableMaskBitmap          = FALSE;
    /* BlitContext_p->MaskBitmap_p */
    /* BlitContext_p->MaskRectangle */
    /* BlitContext_p->WorkBuffer_p = ((stgfx_Unit_t*)Handle)->BdfFgndWB_p; */
    /* BlitContext_p->WorkBuffer_p = KB_OSDAllocate(200, 200); */
    BlitContext_p->EnableColorCorrection     = FALSE;
    /* BlitContext_p->ColorCorrectionTable_p */
    #if 1
    BlitContext_p->Trigger.EnableTrigger     = FALSE;
    #else
    BlitContext_p->Trigger.EnableTrigger     = TRUE;    
    BlitContext_p->Trigger.Type              = STBLIT_TRIGGER_TYPE_PROGRESSIVE_VSYNC;
    #endif
    BlitContext_p->GlobalAlpha               = 255;
    /* previously 255, ignored except for STBLIT_ALU_ALPHA_BLEND */
    
    BlitContext_p->EnableClipRectangle = TRUE;
    /* clipping still needs to be turned on to avoid problems if we try
      to raster outside the bitmap (eg end of Robustness test) */
      
    BlitContext_p->ClipRectangle.PositionX  = 0;
    BlitContext_p->ClipRectangle.PositionY  = 0;
    BlitContext_p->ClipRectangle.Width      = 0;
    BlitContext_p->ClipRectangle.Height     = 0;
    BlitContext_p->WriteInsideClipRectangle = TRUE;
    
    BlitContext_p->EnableFlickerFilter       = FALSE;
    BlitContext_p->JobHandle                 = STBLIT_NO_JOB_HANDLE;
    BlitContext_p->UserTag_p                 = NULL; /* set later to mark avmem to free */    
    memset(&EvtSubscribeParams, 0, sizeof(STEVT_DeviceSubscribeParams_t));
    /* ------------ Subscribe to Blit Completed event ---------------- */
    EvtSubscribeParams.NotifyCallback     = NULL;
    EvtSubscribeParams.SubscriberData_p   = NULL;
    Err = STEVT_SubscribeDeviceEvent(g_KB_EVTHandle[KB_EVT_OSD],BLIT_DeviceName,
                                     STBLIT_BLIT_COMPLETED_EVT,&EvtSubscribeParams);    
    if (Err != ST_NO_ERROR)
    {
        DBGPrint ("Err Subscribe Blit completion : %dn",Err);
        return (Err);
    }
    /* ------------ Get Subscriber ID ------------ */
    Err = STEVT_GetSubscriberID(g_KB_EVTHandle[KB_EVT_OSD],&SubscriberID);
    if (Err != ST_NO_ERROR)
    {
        STTBX_Print(("STEVT_GetSubscriberID %sn", DBGError(Err)));
        return( Err );
    }
    DBGPrint("SubscriberID = %xn", SubscriberID);
    BlitContext_p->EventSubscriberID    = SubscriberID;     
    
    BlitContext_p->NotifyBlitCompletion = FALSE;
    DBGPrint("BlitContext_p->NotifyBlitCompletion = %dn", BlitContext_p->NotifyBlitCompletion);
    return ST_NO_ERROR;
    
}
/* EOF --------------------------------------------------------------------- */

						