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/*
* Copyright (C) Texas Instruments - http://www.ti.com/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "CameraHAL"
#include "CameraHal.h"
#include "TICameraParameters.h"
extern "C" {
#include <ion_ti/ion.h>
//#include <timm_osal_interfaces.h>
//#include <timm_osal_trace.h>
};
namespace android {
///@todo Move these constants to a common header file, preferably in tiler.h
#define STRIDE_8BIT (4 * 1024)
#define STRIDE_16BIT (4 * 1024)
#define ALLOCATION_2D 2
///Utility Macro Declarations
/*--------------------MemoryManager Class STARTS here-----------------------------*/
void* MemoryManager::allocateBuffer(int width, int height, const char* format, int &bytes, int numBufs)
{
LOG_FUNCTION_NAME;
if(mIonFd < 0)
{
mIonFd = ion_open();
if(mIonFd < 0)
{
CAMHAL_LOGEA("ion_open failed!!!");
return NULL;
}
}
///We allocate numBufs+1 because the last entry will be marked NULL to indicate end of array, which is used when freeing
///the buffers
const uint numArrayEntriesC = (uint)(numBufs+1);
///Allocate a buffer array
uint32_t *bufsArr = new uint32_t [numArrayEntriesC];
if(!bufsArr)
{
CAMHAL_LOGEB("Allocation failed when creating buffers array of %d uint32_t elements", numArrayEntriesC);
goto error;
}
///Initialize the array with zeros - this will help us while freeing the array in case of error
///If a value of an array element is NULL, it means we didnt allocate it
memset(bufsArr, 0, sizeof(*bufsArr) * numArrayEntriesC);
//2D Allocations are not supported currently
if(bytes != 0)
{
struct ion_handle *handle;
int mmap_fd;
///1D buffers
for (int i = 0; i < numBufs; i++)
{
int ret = ion_alloc(mIonFd, bytes, 0, 1 << ION_HEAP_TYPE_CARVEOUT, &handle);
if(ret < 0)
{
CAMHAL_LOGEB("ion_alloc resulted in error %d", ret);
goto error;
}
CAMHAL_LOGDB("Before mapping, handle = %x, nSize = %d", handle, bytes);
if ((ret = ion_map(mIonFd, handle, bytes, PROT_READ | PROT_WRITE, MAP_SHARED, 0,
(unsigned char**)&bufsArr[i], &mmap_fd)) < 0)
{
CAMHAL_LOGEB("Userspace mapping of ION buffers returned error %d", ret);
ion_free(mIonFd, handle);
goto error;
}
mIonHandleMap.add(bufsArr[i], (unsigned int)handle);
mIonFdMap.add(bufsArr[i], (unsigned int) mmap_fd);
mIonBufLength.add(bufsArr[i], (unsigned int) bytes);
}
}
else // If bytes is not zero, then it is a 2-D tiler buffer request
{
}
LOG_FUNCTION_NAME_EXIT;
return (void*)bufsArr;
error:
ALOGE("Freeing buffers already allocated after error occurred");
if(bufsArr)
freeBuffer(bufsArr);
if ( NULL != mErrorNotifier.get() )
{
mErrorNotifier->errorNotify(-ENOMEM);
}
if (mIonFd >= 0)
{
ion_close(mIonFd);
mIonFd = -1;
}
LOG_FUNCTION_NAME_EXIT;
return NULL;
}
//TODO: Get needed data to map tiler buffers
//Return dummy data for now
uint32_t * MemoryManager::getOffsets()
{
LOG_FUNCTION_NAME;
LOG_FUNCTION_NAME_EXIT;
return NULL;
}
int MemoryManager::getFd()
{
LOG_FUNCTION_NAME;
LOG_FUNCTION_NAME_EXIT;
return -1;
}
int MemoryManager::freeBuffer(void* buf)
{
status_t ret = NO_ERROR;
LOG_FUNCTION_NAME;
uint32_t *bufEntry = (uint32_t*)buf;
if(!bufEntry)
{
CAMHAL_LOGEA("NULL pointer passed to freebuffer");
LOG_FUNCTION_NAME_EXIT;
return BAD_VALUE;
}
while(*bufEntry)
{
unsigned int ptr = (unsigned int) *bufEntry++;
if(mIonBufLength.valueFor(ptr))
{
munmap((void *)ptr, mIonBufLength.valueFor(ptr));
close(mIonFdMap.valueFor(ptr));
ion_free(mIonFd, (ion_handle*)mIonHandleMap.valueFor(ptr));
mIonHandleMap.removeItem(ptr);
mIonBufLength.removeItem(ptr);
mIonFdMap.removeItem(ptr);
}
else
{
CAMHAL_LOGEA("Not a valid Memory Manager buffer");
}
}
///@todo Check if this way of deleting array is correct, else use malloc/free
uint32_t * bufArr = (uint32_t*)buf;
delete [] bufArr;
if(mIonBufLength.size() == 0)
{
if(mIonFd >= 0)
{
ion_close(mIonFd);
mIonFd = -1;
}
}
LOG_FUNCTION_NAME_EXIT;
return ret;
}
status_t MemoryManager::setErrorHandler(ErrorNotifier *errorNotifier)
{
status_t ret = NO_ERROR;
LOG_FUNCTION_NAME;
if ( NULL == errorNotifier )
{
CAMHAL_LOGEA("Invalid Error Notifier reference");
ret = -EINVAL;
}
if ( NO_ERROR == ret )
{
mErrorNotifier = errorNotifier;
}
LOG_FUNCTION_NAME_EXIT;
return ret;
}
};
/*--------------------MemoryManager Class ENDS here-----------------------------*/
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