int PreviewStream::freeBuffers()
{
status_t ret = NO_ERROR;
GraphicBufferMapper& mapper = GraphicBufferMapper::get();
// Give the buffers back to display here - sort of free it
if (mNativeWindow) {
for (int i = 0; i < mTotalBuffers; i++) {
mapper.unlock(mCameraBuffer[i].mBufHandle);
ret = mNativeWindow->cancel_buffer(mNativeWindow,
&mCameraBuffer[i].mBufHandle);
if (ENODEV == ret) {
FLOGE("Preview surface abandoned!");
mNativeWindow = NULL;
return -ret;
}
else if (NO_ERROR != ret) {
FLOGE("cancel_buffer() failed: %s (%d)", strerror(-ret), -ret);
return -ret;
}
}
}
else {
FLOGE("mNativeWindow is NULL");
}
// /Clear the frames with camera adapter map
dispatchBuffers(NULL, 0, BUFFER_DESTROY);
return ret;
}
int PhysMemAdapter::freeBuffer()
{
if (mIonFd <= 0) {
FLOGE("try to free buffer from ion in preview or ion invalid");
return BAD_VALUE;
}
FLOGI("freeBufferToIon buffer num:%d", mBufferCount);
for (int i = 0; i < mBufferCount; i++) {
struct ion_handle *ionHandle =
(struct ion_handle *)mCameraBuffer[i].mBufHandle;
ion_free(mIonFd, ionHandle);
munmap(mCameraBuffer[i].mVirtAddr, mCameraBuffer[i].mSize);
}
memset(mCameraBuffer, 0, sizeof(mCameraBuffer));
dispatchBuffers(NULL, 0, BUFFER_DESTROY);
return NO_ERROR;
}
int PhysMemAdapter::allocatePictureBuffer(int width,
int height,
int format,
int numBufs)
{
if (mIonFd <= 0) {
FLOGE("try to allocate buffer from ion in preview or ion invalid");
return BAD_VALUE;
}
int size = 0;
if ((width == 0) || (height == 0)) {
FLOGE("allocateBufferFromIon: width or height = 0");
return BAD_VALUE;
}
switch (format) {
case HAL_PIXEL_FORMAT_YCbCr_420_SP:
size = width * ((height + 16) & (~15)) * 3 / 2;
break;
case HAL_PIXEL_FORMAT_YCbCr_420_P:
size = width * height * 3 / 2;
break;
case HAL_PIXEL_FORMAT_YCbCr_422_I:
size = width * height * 2;
break;
default:
FLOGE("Error: format not supported int ion alloc");
return BAD_VALUE;
}
unsigned char *ptr = NULL;
int sharedFd;
int phyAddr;
struct ion_handle *ionHandle;
size = (size + PAGE_SIZE - 1) & (~(PAGE_SIZE - 1));
FLOGI("allocateBufferFromIon buffer num:%d", numBufs);
for (int i = 0; i < numBufs; i++) {
ionHandle = NULL;
int err = ion_alloc(mIonFd, size, 8, 1, &ionHandle);
if (err) {
FLOGE("ion_alloc failed.");
return BAD_VALUE;
}
err = ion_map(mIonFd,
ionHandle,
size,
PROT_READ | PROT_WRITE,
MAP_SHARED,
0,
&ptr,
&sharedFd);
if (err) {
FLOGE("ion_map failed.");
return BAD_VALUE;
}
phyAddr = ion_phys(mIonFd, ionHandle);
if (phyAddr == 0) {
FLOGE("ion_phys failed.");
return BAD_VALUE;
}
FLOG_RUNTIME("phyalloc ptr:0x%x, phy:0x%x, size:%d",
(int)ptr,
phyAddr,
size);
mCameraBuffer[i].reset();
mCameraBuffer[i].mIndex = i;
mCameraBuffer[i].mWidth = width;
mCameraBuffer[i].mHeight = height;
mCameraBuffer[i].mFormat = format;
mCameraBuffer[i].mVirtAddr = ptr;
mCameraBuffer[i].mPhyAddr = phyAddr;
mCameraBuffer[i].mSize = size;
mCameraBuffer[i].mBufHandle = (buffer_handle_t *)ionHandle;
close(sharedFd);
}
mBufferCount = numBufs;
mQueueableCount = numBufs;
mFormat = format;
mBufferSize = mCameraBuffer[0].mSize;
mFrameWidth = width;
mFrameHeight = height;
dispatchBuffers(&mCameraBuffer[0], numBufs, BUFFER_CREATE);
return NO_ERROR;
}
int PreviewStream::allocateBuffers(int /*width*/, int /*height*/,
int /*format*/, int /*numBufs*/ )
{
int index = -1;
int ret = NO_ERROR;
//In DeviceAdapter::handleFrameRelease, if mPreviewing is false,
//will not dec mRefCount. This will happen when performance is low.
//So need zero ref count.
for (int i = 0; i < mTotalBuffers; i++) {
// FLOGI("==== PreviewStream::allocateBuffers, i %d, state %d, ref %d",
// i, mCameraBuffer[i].getState(), mCameraBuffer[i].getRefCount());
mCameraBuffer[i].ZeroRefCount();
}
for (int i = 0; i < mMaxProducerBuffers; i++) {
buffer_handle_t *buf_h = NULL;
ret = mNativeWindow->dequeue_buffer(mNativeWindow, &buf_h);
if (ret != 0) {
FLOGE("dequeueBuffer failed: %s (%d)", strerror(-ret), -ret);
if (ENODEV == ret) {
FLOGE("Preview surface abandoned!");
mNativeWindow = NULL;
}
return ret;
}
index = getBufferIdx(buf_h);
if (index < 0 || index >= mTotalBuffers) {
FLOGE("%s dequeue invalid buffer", __FUNCTION__);
return BAD_VALUE;
}
mCameraBuffer[index].setState(CameraFrame::BUFS_FREE);
if(mDeviceAdapter.get() && mDeviceAdapter->UseMJPG()) {
mDeviceAdapter.get()->mVPUPhyAddr[i] = (unsigned char*)mCameraBuffer[index].mPhyAddr;
mDeviceAdapter.get()->mVPUVirtAddr[i] = (unsigned char*)mCameraBuffer[index].mVirtAddr;
FLOGI("allocateBuffers, index %d, phyAddr 0x%x", index, mCameraBuffer[index].mPhyAddr);
}
}
for (int i = 0; i < mTotalBuffers; i++) {
int state = mCameraBuffer[i].getState();
if (state != CameraFrame::BUFS_FREE) {
mCameraBuffer[i].setState(CameraFrame::BUFS_IN_SERVICE);
// The frame held in service.
// Make sure we dont add one more reference
// count for it
if(!mCameraBuffer[i].getRefCount())
mCameraBuffer[i].addReference();
}
if(mDeviceAdapter.get() && mDeviceAdapter->UseMJPG()) {
mCameraBuffer[i].mBindUVCBufIdx = -1;
mCameraBuffer[i].mpFrameBuf = NULL;
}
}
dispatchBuffers(&mCameraBuffer[0], mTotalBuffers, BUFFER_CREATE);
return ret;
}