/*----------------------------------------------------------------------------
*Function: CMM_Open
*Parameters: InitHandle :Handle to JPEG context
dwAccess :
dwShareMode :File share mode of JPEG
*Return Value: This function returns a handle that identifies the
open context of JPEG to the calling application.
*Implementation Notes: Opens JPEG CODEC device for reading, writing, or both
-----------------------------------------------------------------------------*/
DWORD
CMM_Open(
DWORD InitHandle,
DWORD dwAccess,
DWORD dwShareMode
)
{
CODEC_MEM_CTX *CodecMem;
DWORD ret;
UINT8 inst_no;
ret = LockCMMMutex();
if(!ret){
RETAILMSG(1, (TEXT("[CMM_Open] CMM Mutex Lock Fail\r\n")));
return FALSE;
}
// check the number of instance
if((inst_no = GetInstanceNo()) < 0){
RETAILMSG(1, (TEXT("[CMM_Open] Instance Number error-too many instance\r\n")));
UnlockCMMMutex();
return FALSE;
}
CodecMem = (CODEC_MEM_CTX *)malloc(sizeof(CODEC_MEM_CTX));
if(CodecMem == NULL){
RETAILMSG(1, (TEXT("[CMM_Init] CodecMem allocatopn failed\r\n")));
UnlockCMMMutex();
return FALSE;
}
memset(CodecMem, 0x00, sizeof(CODEC_MEM_CTX));
CodecMem->inst_no = inst_no;
printD("\n*****************************\n[CMM_Open] instanceNo : %d\n*****************************\n", CodecMem->inst_no);
PrintList();
UnlockCMMMutex();
return (DWORD)CodecMem;
}
static int s3c_cmm_open(struct inode *inode, struct file *file)
{
CODEC_MEM_CTX *CodecMem;
int ret;
int inst_no;
ret = LockCMMMutex();
if (!ret){
LOG_MSG(LOG_ERROR, "s3c_cmm_open", "DD::CMM Mutex Lock Fail\n");
return -1;
}
// check the number of instance
if((inst_no = GetInstanceNo()) < 0){
LOG_MSG(LOG_ERROR, "s3c_cmm_open", "Instance Number error-too many instance\r\n");
UnlockCMMMutex();
return -1;
}
CodecMem = (CODEC_MEM_CTX *)kmalloc(sizeof(CODEC_MEM_CTX), GFP_KERNEL);
if(CodecMem == NULL){
LOG_MSG(LOG_ERROR, "s3c_cmm_open", "CodecMem application failed\n");
UnlockCMMMutex();
return -1;
}
memset(CodecMem, 0x00, sizeof(CODEC_MEM_CTX));
CodecMem->inst_no = inst_no;
printk("\n*****************************\n[CMM_Open] instanceNo : %d\n*****************************\n", CodecMem->inst_no);
PrintList();
file->private_data = (CODEC_MEM_CTX *)CodecMem;
UnlockCMMMutex();
return 0;
}
