/*----------------------------------------------------------------------------
* RTTTL_Prepare()
*----------------------------------------------------------------------------
* Purpose:
* Prepare to parse the file. Allocates instance data (or uses static allocation for
* static memory model).
*
* Inputs:
* pEASData - pointer to overall EAS data structure
* handle - pointer to file handle
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
static EAS_RESULT RTTTL_Prepare (S_EAS_DATA *pEASData, EAS_VOID_PTR pInstData)
{
S_RTTTL_DATA* pData;
EAS_RESULT result;
/* check for valid state */
pData = (S_RTTTL_DATA*) pInstData;
if (pData->state != EAS_STATE_OPEN)
return EAS_ERROR_NOT_VALID_IN_THIS_STATE;
/* instantiate a synthesizer */
if ((result = VMInitMIDI(pEASData, &pData->pSynth)) != EAS_SUCCESS)
{
{ /* dpp: EAS_ReportEx(_EAS_SEVERITY_ERROR, "VMInitMIDI returned %d\n", result); */ }
return result;
}
pData->state = EAS_STATE_ERROR;
if ((result = RTTTL_ParseHeader (pEASData, pData, (EAS_BOOL) (pData->metadata.callback != NULL))) != EAS_SUCCESS)
{
/* if using dynamic memory, free it */
if (!pEASData->staticMemoryModel)
EAS_HWFree(pEASData->hwInstData, pData);
return result;
}
pData->state = EAS_STATE_READY;
return EAS_SUCCESS;
}
/*----------------------------------------------------------------------------
*
* EAS_HWClose
*
* Wrapper for fclose function
*
*----------------------------------------------------------------------------
*/
EAS_RESULT EAS_HWCloseFile (EAS_HW_DATA_HANDLE hwInstData, EAS_FILE_HANDLE file1)
{
EAS_HW_FILE *file2,*dupFile;
int i;
/* simulate failure */
if (errorConditions[eCloseError])
return EAS_FAILURE;
/* make sure we have a valid handle */
if (file1->buffer == NULL)
return EAS_ERROR_INVALID_HANDLE;
/* check for duplicate handle */
if (file1->dup)
{
dupFile = NULL;
file2 = hwInstData->files;
for (i = 0; i < EAS_MAX_FILE_HANDLES; i++)
{
/* check for duplicate */
if ((file1 != file2) && (file2->buffer == file1->buffer))
{
/* is there more than one duplicate? */
if (dupFile != NULL)
{
/* clear this entry and return */
file1->buffer = NULL;
return EAS_SUCCESS;
}
/* this is the first duplicate found */
else
dupFile = file2;
}
file2++;
}
/* there is only one duplicate, clear the dup flag */
if (dupFile)
dupFile->dup = EAS_FALSE;
else
/* if we get here, there's a serious problem */
return EAS_ERROR_HANDLE_INTEGRITY;
/* clear this entry and return */
file1->buffer = NULL;
return EAS_SUCCESS;
}
/* no duplicates -free the buffer */
EAS_HWFree(hwInstData, file1->buffer);
/* clear this entry and return */
file1->buffer = NULL;
return EAS_SUCCESS;
}
