source: svn/newcon3bcm2_21bu/nexus/lib/softgfx/src/bgfx_defs.c @ 22

/***************************************************************
**     (c)2009 Broadcom Corporation
**  
**  This program is the proprietary software of Broadcom Corporation and/or its licensors,
**  and may only be used, duplicated, modified or distributed pursuant to the terms and
**  conditions of a separate, written license agreement executed between you and Broadcom
**  (an "Authorized License").  Except as set forth in an Authorized License, Broadcom grants
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**  HAVE NO RIGHT TO USE THIS SOFTWARE IN ANY WAY, AND SHOULD IMMEDIATELY
**  NOTIFY BROADCOM AND DISCONTINUE ALL USE OF THE SOFTWARE.  
**   
**  Except as expressly set forth in the Authorized License,
**   
**  1.     This program, including its structure, sequence and organization, constitutes the valuable trade
**  secrets of Broadcom, and you shall use all reasonable efforts to protect the confidentiality thereof,
**  and to use this information only in connection with your use of Broadcom integrated circuit products.
**   
**  2.     TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" 
**  AND WITH ALL FAULTS AND BROADCOM MAKES NO PROMISES, REPRESENTATIONS OR 
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** 
** Created: 8/22/2002 by Jeffrey P. Fisher
**
** $brcm_Workfile: bgfx_defs.c $
** $brcm_Revision: Refsw_7550/3 $
** $brcm_Date: 11/26/09 11:27a $
**
** Revision History:
**
** $brcm_Log: /nexus/lib/softgfx/src/bgfx_defs.c $
** 
** Refsw_7550/3   11/26/09 11:27a kagrawal
** SW7550-77: Fixed compile time warning
** 
** Refsw_7550/2   9/25/09 12:54p kagrawal
** SW7550-50: Performance optimized gfx from 7003 latest
** 
** Refsw_7550/1   9/7/09 5:04p kagrawal
** SW7550-3: Initial check-in for Soft Graphics
**
****************************************************************/

/** include files **/
#include "bgfx_defs.h"

/** local types, definitions and data **/
static int g_bgfx_debug_level = 1;
static bgfx_io_t *g_p_io = NULL;
static bgfx_prot_t *g_prot_t = NULL;

/****************************************************************}
* INPUTS:       none
* OUTPUTS:      none
* RETURNS:      debug level 
* FUNCTION: get the debug level
*
****************************************************************/

int bgfx_get_debug_level()
{
        return g_bgfx_debug_level;
}
/****************************************************************}
* INPUTS:       debug level
* OUTPUTS:      none
* RETURNS:      none 
* FUNCTION: set the debug level
*
****************************************************************/
void bgfx_set_debug_level(int level)
{
        g_bgfx_debug_level = level;
}


/****************************************************************
* INPUTS:       none
* OUTPUTS:      none
* RETURNS:      none 
* FUNCTION:     Called to protect internal global structures.  Supplied
*                       callback function should function as a mutual exclusion
*                       semaphore.
****************************************************************/
void bgfx_lock(void)
{
   g_prot_t->lock();   
}
/****************************************************************
* INPUTS:       none
* OUTPUTS:      none
* RETURNS:      none 
* FUNCTION:     Called to release protection of internal global structures.
*                       Supplied callback function should release mutual exclusion
*                       semaphore.
****************************************************************/
void bgfx_unlock(void)
{
        g_prot_t->unlock();   
}

/****************************************************************
* INPUTS:       same as standard file IO (see fread)
* OUTPUTS:      none
* RETURNS:      none 
* FUNCTION:     Read data from the file stream.  Supplied callback function
*                       should load count elements of size bytes into the supplied
*                       buffer and return the number of bytes actualy loaded or
*                       value < 0 when an error occurs.
*
*
****************************************************************/
long bgfx_read(void *buffer, long size, long count, void *fp )
{
        return g_p_io->read(buffer,size,count,fp);   
}

/****************************************************************
* INPUTS:       same as standard file IO (see fread)
* OUTPUTS:      none
* RETURNS:      none 
* FUNCTION:     Read data from the file stream.  Supplied callback function
*                       should load count elements of size bytes into the supplied
*                       buffer and return the number of bytes actualy loaded or
*                       value < 0 when an error occurs.
*
*
****************************************************************/
unsigned int bgfx_tell(void *fp )
{
        return g_p_io->tell(fp);   
}

/****************************************************************
* INPUTS:       same as standard file IO (see fseek)
* OUTPUTS:      none
* RETURNS:      none 
* FUNCTION:     Set the current file pointer. (only uses SEEK_SET = 0)
*
*
****************************************************************/
int bgfx_set( void *fp,int offset, int whence)
{
        return g_p_io->set(fp, offset, whence);   
}

/****************************************************************}
* INPUTS:       io and protection function structures
* OUTPUTS:      none
* RETURNS:      non-zero on failure 
* FUNCTION: initialize sgl, primarily for protection of freetype global
*                       structures.
*
****************************************************************/
void bgfx_config(bgfx_io_t *io_p,bgfx_prot_t *prot_p)
{
        g_p_io = io_p;
        g_prot_t = prot_p;
}
/****************************************************************}
* INPUTS:       ptr - address to flush
*                       nbytes - number of bytes
* OUTPUTS:      none
* RETURNS:      none 
* FUNCTION: Perform a cache flush for the address and size specified.
*
****************************************************************/
void bgfx_cacheflush(void *ptr,int nbytes)
{
        /* not implemented in uclibc cacheflush(ptr,nbytes,DCACHE);
        BROKEN syscall(__NR_cacheflush,ptr,nbytes,DCACHE);
        */
        BSTD_UNUSED(ptr);
    BSTD_UNUSED(nbytes);
}