| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * 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 "Camera2-CallbackProcessor" |
| #define ATRACE_TAG ATRACE_TAG_CAMERA |
| //#define LOG_NDEBUG 0 |
| |
| #include <utils/Log.h> |
| #include <utils/Trace.h> |
| #include <gui/Surface.h> |
| |
| #include "common/CameraDeviceBase.h" |
| #include "api1/Camera2Client.h" |
| #include "api1/client2/CallbackProcessor.h" |
| |
| #define ALIGN(x, mask) ( ((x) + (mask) - 1) & ~((mask) - 1) ) |
| |
| namespace android { |
| namespace camera2 { |
| |
| CallbackProcessor::CallbackProcessor(sp<Camera2Client> client): |
| Thread(false), |
| mClient(client), |
| mDevice(client->getCameraDevice()), |
| mId(client->getCameraId()), |
| mCallbackAvailable(false), |
| mCallbackToApp(false), |
| mCallbackStreamId(NO_STREAM) { |
| } |
| |
| CallbackProcessor::~CallbackProcessor() { |
| ALOGV("%s: Exit", __FUNCTION__); |
| deleteStream(); |
| } |
| |
| void CallbackProcessor::onFrameAvailable(const BufferItem& /*item*/) { |
| Mutex::Autolock l(mInputMutex); |
| if (!mCallbackAvailable) { |
| mCallbackAvailable = true; |
| mCallbackAvailableSignal.signal(); |
| } |
| } |
| |
| status_t CallbackProcessor::setCallbackWindow( |
| sp<ANativeWindow> callbackWindow) { |
| ATRACE_CALL(); |
| status_t res; |
| |
| Mutex::Autolock l(mInputMutex); |
| |
| sp<Camera2Client> client = mClient.promote(); |
| if (client == 0) return OK; |
| sp<CameraDeviceBase> device = client->getCameraDevice(); |
| |
| // If the window is changing, clear out stream if it already exists |
| if (mCallbackWindow != callbackWindow && mCallbackStreamId != NO_STREAM) { |
| res = device->deleteStream(mCallbackStreamId); |
| if (res != OK) { |
| ALOGE("%s: Camera %d: Unable to delete old stream " |
| "for callbacks: %s (%d)", __FUNCTION__, |
| client->getCameraId(), strerror(-res), res); |
| return res; |
| } |
| mCallbackStreamId = NO_STREAM; |
| mCallbackConsumer.clear(); |
| } |
| mCallbackWindow = callbackWindow; |
| mCallbackToApp = (mCallbackWindow != NULL); |
| |
| return OK; |
| } |
| |
| status_t CallbackProcessor::updateStream(const Parameters ¶ms) { |
| ATRACE_CALL(); |
| status_t res; |
| |
| Mutex::Autolock l(mInputMutex); |
| |
| sp<CameraDeviceBase> device = mDevice.promote(); |
| if (device == 0) { |
| ALOGE("%s: Camera %d: Device does not exist", __FUNCTION__, mId); |
| return INVALID_OPERATION; |
| } |
| |
| // If possible, use the flexible YUV format |
| int32_t callbackFormat = params.previewFormat; |
| if (mCallbackToApp) { |
| // TODO: etalvala: This should use the flexible YUV format as well, but |
| // need to reconcile HAL2/HAL3 requirements. |
| callbackFormat = HAL_PIXEL_FORMAT_YV12; |
| } else if(params.fastInfo.useFlexibleYuv && |
| (params.previewFormat == HAL_PIXEL_FORMAT_YCrCb_420_SP || |
| params.previewFormat == HAL_PIXEL_FORMAT_YV12) ) { |
| callbackFormat = HAL_PIXEL_FORMAT_YCbCr_420_888; |
| } |
| |
| if (!mCallbackToApp && mCallbackConsumer == 0) { |
| // Create CPU buffer queue endpoint, since app hasn't given us one |
| // Make it async to avoid disconnect deadlocks |
| sp<IGraphicBufferProducer> producer; |
| sp<IGraphicBufferConsumer> consumer; |
| BufferQueue::createBufferQueue(&producer, &consumer); |
| mCallbackConsumer = new CpuConsumer(consumer, kCallbackHeapCount); |
| mCallbackConsumer->setFrameAvailableListener(this); |
| mCallbackConsumer->setName(String8("Camera2Client::CallbackConsumer")); |
| mCallbackWindow = new Surface(producer); |
| } |
| |
| if (mCallbackStreamId != NO_STREAM) { |
| // Check if stream parameters have to change |
| uint32_t currentWidth, currentHeight, currentFormat; |
| res = device->getStreamInfo(mCallbackStreamId, |
| ¤tWidth, ¤tHeight, ¤tFormat); |
| if (res != OK) { |
| ALOGE("%s: Camera %d: Error querying callback output stream info: " |
| "%s (%d)", __FUNCTION__, mId, |
| strerror(-res), res); |
| return res; |
| } |
| if (currentWidth != (uint32_t)params.previewWidth || |
| currentHeight != (uint32_t)params.previewHeight || |
| currentFormat != (uint32_t)callbackFormat) { |
| // Since size should only change while preview is not running, |
| // assuming that all existing use of old callback stream is |
| // completed. |
| ALOGV("%s: Camera %d: Deleting stream %d since the buffer " |
| "parameters changed", __FUNCTION__, mId, mCallbackStreamId); |
| res = device->deleteStream(mCallbackStreamId); |
| if (res != OK) { |
| ALOGE("%s: Camera %d: Unable to delete old output stream " |
| "for callbacks: %s (%d)", __FUNCTION__, |
| mId, strerror(-res), res); |
| return res; |
| } |
| mCallbackStreamId = NO_STREAM; |
| } |
| } |
| |
| if (mCallbackStreamId == NO_STREAM) { |
| ALOGV("Creating callback stream: %d x %d, format 0x%x, API format 0x%x", |
| params.previewWidth, params.previewHeight, |
| callbackFormat, params.previewFormat); |
| res = device->createStream(mCallbackWindow, |
| params.previewWidth, params.previewHeight, |
| callbackFormat, &mCallbackStreamId); |
| if (res != OK) { |
| ALOGE("%s: Camera %d: Can't create output stream for callbacks: " |
| "%s (%d)", __FUNCTION__, mId, |
| strerror(-res), res); |
| return res; |
| } |
| } |
| |
| return OK; |
| } |
| |
| status_t CallbackProcessor::deleteStream() { |
| ATRACE_CALL(); |
| sp<CameraDeviceBase> device; |
| status_t res; |
| { |
| Mutex::Autolock l(mInputMutex); |
| |
| if (mCallbackStreamId == NO_STREAM) { |
| return OK; |
| } |
| device = mDevice.promote(); |
| if (device == 0) { |
| ALOGE("%s: Camera %d: Device does not exist", __FUNCTION__, mId); |
| return INVALID_OPERATION; |
| } |
| } |
| res = device->waitUntilDrained(); |
| if (res != OK) { |
| ALOGE("%s: Error waiting for HAL to drain: %s (%d)", |
| __FUNCTION__, strerror(-res), res); |
| return res; |
| } |
| |
| res = device->deleteStream(mCallbackStreamId); |
| if (res != OK) { |
| ALOGE("%s: Unable to delete callback stream: %s (%d)", |
| __FUNCTION__, strerror(-res), res); |
| return res; |
| } |
| |
| { |
| Mutex::Autolock l(mInputMutex); |
| |
| mCallbackHeap.clear(); |
| mCallbackWindow.clear(); |
| mCallbackConsumer.clear(); |
| |
| mCallbackStreamId = NO_STREAM; |
| } |
| return OK; |
| } |
| |
| int CallbackProcessor::getStreamId() const { |
| Mutex::Autolock l(mInputMutex); |
| return mCallbackStreamId; |
| } |
| |
| void CallbackProcessor::dump(int /*fd*/, const Vector<String16>& /*args*/) const { |
| } |
| |
| bool CallbackProcessor::threadLoop() { |
| status_t res; |
| |
| { |
| Mutex::Autolock l(mInputMutex); |
| while (!mCallbackAvailable) { |
| res = mCallbackAvailableSignal.waitRelative(mInputMutex, |
| kWaitDuration); |
| if (res == TIMED_OUT) return true; |
| } |
| mCallbackAvailable = false; |
| } |
| |
| do { |
| sp<Camera2Client> client = mClient.promote(); |
| if (client == 0) { |
| res = discardNewCallback(); |
| } else { |
| res = processNewCallback(client); |
| } |
| } while (res == OK); |
| |
| return true; |
| } |
| |
| status_t CallbackProcessor::discardNewCallback() { |
| ATRACE_CALL(); |
| status_t res; |
| CpuConsumer::LockedBuffer imgBuffer; |
| res = mCallbackConsumer->lockNextBuffer(&imgBuffer); |
| if (res != OK) { |
| if (res != BAD_VALUE) { |
| ALOGE("%s: Camera %d: Error receiving next callback buffer: " |
| "%s (%d)", __FUNCTION__, mId, strerror(-res), res); |
| } |
| return res; |
| } |
| mCallbackConsumer->unlockBuffer(imgBuffer); |
| return OK; |
| } |
| |
| status_t CallbackProcessor::processNewCallback(sp<Camera2Client> &client) { |
| ATRACE_CALL(); |
| status_t res; |
| |
| sp<Camera2Heap> callbackHeap; |
| bool useFlexibleYuv = false; |
| int32_t previewFormat = 0; |
| size_t heapIdx; |
| |
| { |
| /* acquire SharedParameters before mMutex so we don't dead lock |
| with Camera2Client code calling into StreamingProcessor */ |
| SharedParameters::Lock l(client->getParameters()); |
| Mutex::Autolock m(mInputMutex); |
| CpuConsumer::LockedBuffer imgBuffer; |
| if (mCallbackStreamId == NO_STREAM) { |
| ALOGV("%s: Camera %d:No stream is available" |
| , __FUNCTION__, mId); |
| return INVALID_OPERATION; |
| } |
| |
| ALOGV("%s: Getting buffer", __FUNCTION__); |
| res = mCallbackConsumer->lockNextBuffer(&imgBuffer); |
| if (res != OK) { |
| if (res != BAD_VALUE) { |
| ALOGE("%s: Camera %d: Error receiving next callback buffer: " |
| "%s (%d)", __FUNCTION__, mId, strerror(-res), res); |
| } |
| return res; |
| } |
| ALOGV("%s: Camera %d: Preview callback available", __FUNCTION__, |
| mId); |
| |
| if ( l.mParameters.state != Parameters::PREVIEW |
| && l.mParameters.state != Parameters::RECORD |
| && l.mParameters.state != Parameters::VIDEO_SNAPSHOT) { |
| ALOGV("%s: Camera %d: No longer streaming", |
| __FUNCTION__, mId); |
| mCallbackConsumer->unlockBuffer(imgBuffer); |
| return OK; |
| } |
| |
| if (! (l.mParameters.previewCallbackFlags & |
| CAMERA_FRAME_CALLBACK_FLAG_ENABLE_MASK) ) { |
| ALOGV("%s: No longer enabled, dropping", __FUNCTION__); |
| mCallbackConsumer->unlockBuffer(imgBuffer); |
| return OK; |
| } |
| if ((l.mParameters.previewCallbackFlags & |
| CAMERA_FRAME_CALLBACK_FLAG_ONE_SHOT_MASK) && |
| !l.mParameters.previewCallbackOneShot) { |
| ALOGV("%s: One shot mode, already sent, dropping", __FUNCTION__); |
| mCallbackConsumer->unlockBuffer(imgBuffer); |
| return OK; |
| } |
| |
| if (imgBuffer.width != static_cast<uint32_t>(l.mParameters.previewWidth) || |
| imgBuffer.height != static_cast<uint32_t>(l.mParameters.previewHeight)) { |
| ALOGW("%s: The preview size has changed to %d x %d from %d x %d, this buffer is" |
| " no longer valid, dropping",__FUNCTION__, |
| l.mParameters.previewWidth, l.mParameters.previewHeight, |
| imgBuffer.width, imgBuffer.height); |
| mCallbackConsumer->unlockBuffer(imgBuffer); |
| return OK; |
| } |
| |
| previewFormat = l.mParameters.previewFormat; |
| useFlexibleYuv = l.mParameters.fastInfo.useFlexibleYuv && |
| (previewFormat == HAL_PIXEL_FORMAT_YCrCb_420_SP || |
| previewFormat == HAL_PIXEL_FORMAT_YV12); |
| |
| int32_t expectedFormat = useFlexibleYuv ? |
| HAL_PIXEL_FORMAT_YCbCr_420_888 : previewFormat; |
| |
| if (imgBuffer.format != expectedFormat) { |
| ALOGE("%s: Camera %d: Unexpected format for callback: " |
| "0x%x, expected 0x%x", __FUNCTION__, mId, |
| imgBuffer.format, expectedFormat); |
| mCallbackConsumer->unlockBuffer(imgBuffer); |
| return INVALID_OPERATION; |
| } |
| |
| // In one-shot mode, stop sending callbacks after the first one |
| if (l.mParameters.previewCallbackFlags & |
| CAMERA_FRAME_CALLBACK_FLAG_ONE_SHOT_MASK) { |
| ALOGV("%s: clearing oneshot", __FUNCTION__); |
| l.mParameters.previewCallbackOneShot = false; |
| } |
| |
| uint32_t destYStride = 0; |
| uint32_t destCStride = 0; |
| if (useFlexibleYuv) { |
| if (previewFormat == HAL_PIXEL_FORMAT_YV12) { |
| // Strides must align to 16 for YV12 |
| destYStride = ALIGN(imgBuffer.width, 16); |
| destCStride = ALIGN(destYStride / 2, 16); |
| } else { |
| // No padding for NV21 |
| ALOG_ASSERT(previewFormat == HAL_PIXEL_FORMAT_YCrCb_420_SP, |
| "Unexpected preview format 0x%x", previewFormat); |
| destYStride = imgBuffer.width; |
| destCStride = destYStride / 2; |
| } |
| } else { |
| destYStride = imgBuffer.stride; |
| // don't care about cStride |
| } |
| |
| size_t bufferSize = Camera2Client::calculateBufferSize( |
| imgBuffer.width, imgBuffer.height, |
| previewFormat, destYStride); |
| size_t currentBufferSize = (mCallbackHeap == 0) ? |
| 0 : (mCallbackHeap->mHeap->getSize() / kCallbackHeapCount); |
| if (bufferSize != currentBufferSize) { |
| mCallbackHeap.clear(); |
| mCallbackHeap = new Camera2Heap(bufferSize, kCallbackHeapCount, |
| "Camera2Client::CallbackHeap"); |
| if (mCallbackHeap->mHeap->getSize() == 0) { |
| ALOGE("%s: Camera %d: Unable to allocate memory for callbacks", |
| __FUNCTION__, mId); |
| mCallbackConsumer->unlockBuffer(imgBuffer); |
| return INVALID_OPERATION; |
| } |
| |
| mCallbackHeapHead = 0; |
| mCallbackHeapFree = kCallbackHeapCount; |
| } |
| |
| if (mCallbackHeapFree == 0) { |
| ALOGE("%s: Camera %d: No free callback buffers, dropping frame", |
| __FUNCTION__, mId); |
| mCallbackConsumer->unlockBuffer(imgBuffer); |
| return OK; |
| } |
| |
| heapIdx = mCallbackHeapHead; |
| |
| mCallbackHeapHead = (mCallbackHeapHead + 1) & kCallbackHeapCount; |
| mCallbackHeapFree--; |
| |
| // TODO: Get rid of this copy by passing the gralloc queue all the way |
| // to app |
| |
| ssize_t offset; |
| size_t size; |
| sp<IMemoryHeap> heap = |
| mCallbackHeap->mBuffers[heapIdx]->getMemory(&offset, |
| &size); |
| uint8_t *data = (uint8_t*)heap->getBase() + offset; |
| |
| if (!useFlexibleYuv) { |
| // Can just memcpy when HAL format matches API format |
| memcpy(data, imgBuffer.data, bufferSize); |
| } else { |
| res = convertFromFlexibleYuv(previewFormat, data, imgBuffer, |
| destYStride, destCStride); |
| if (res != OK) { |
| ALOGE("%s: Camera %d: Can't convert between 0x%x and 0x%x formats!", |
| __FUNCTION__, mId, imgBuffer.format, previewFormat); |
| mCallbackConsumer->unlockBuffer(imgBuffer); |
| return BAD_VALUE; |
| } |
| } |
| |
| ALOGV("%s: Freeing buffer", __FUNCTION__); |
| mCallbackConsumer->unlockBuffer(imgBuffer); |
| |
| // mCallbackHeap may get freed up once input mutex is released |
| callbackHeap = mCallbackHeap; |
| } |
| |
| // Call outside parameter lock to allow re-entrancy from notification |
| { |
| Camera2Client::SharedCameraCallbacks::Lock |
| l(client->mSharedCameraCallbacks); |
| if (l.mRemoteCallback != 0) { |
| ALOGV("%s: Camera %d: Invoking client data callback", |
| __FUNCTION__, mId); |
| l.mRemoteCallback->dataCallback(CAMERA_MSG_PREVIEW_FRAME, |
| callbackHeap->mBuffers[heapIdx], NULL); |
| } |
| } |
| |
| // Only increment free if we're still using the same heap |
| mCallbackHeapFree++; |
| |
| ALOGV("%s: exit", __FUNCTION__); |
| |
| return OK; |
| } |
| |
| status_t CallbackProcessor::convertFromFlexibleYuv(int32_t previewFormat, |
| uint8_t *dst, |
| const CpuConsumer::LockedBuffer &src, |
| uint32_t dstYStride, |
| uint32_t dstCStride) const { |
| |
| if (previewFormat != HAL_PIXEL_FORMAT_YCrCb_420_SP && |
| previewFormat != HAL_PIXEL_FORMAT_YV12) { |
| ALOGE("%s: Camera %d: Unexpected preview format when using " |
| "flexible YUV: 0x%x", __FUNCTION__, mId, previewFormat); |
| return INVALID_OPERATION; |
| } |
| |
| // Copy Y plane, adjusting for stride |
| const uint8_t *ySrc = src.data; |
| uint8_t *yDst = dst; |
| for (size_t row = 0; row < src.height; row++) { |
| memcpy(yDst, ySrc, src.width); |
| ySrc += src.stride; |
| yDst += dstYStride; |
| } |
| |
| // Copy/swizzle chroma planes, 4:2:0 subsampling |
| const uint8_t *cbSrc = src.dataCb; |
| const uint8_t *crSrc = src.dataCr; |
| size_t chromaHeight = src.height / 2; |
| size_t chromaWidth = src.width / 2; |
| ssize_t chromaGap = src.chromaStride - |
| (chromaWidth * src.chromaStep); |
| size_t dstChromaGap = dstCStride - chromaWidth; |
| |
| if (previewFormat == HAL_PIXEL_FORMAT_YCrCb_420_SP) { |
| // Flexible YUV chroma to NV21 chroma |
| uint8_t *crcbDst = yDst; |
| // Check for shortcuts |
| if (cbSrc == crSrc + 1 && src.chromaStep == 2) { |
| ALOGV("%s: Fast NV21->NV21", __FUNCTION__); |
| // Source has semiplanar CrCb chroma layout, can copy by rows |
| for (size_t row = 0; row < chromaHeight; row++) { |
| memcpy(crcbDst, crSrc, src.width); |
| crcbDst += src.width; |
| crSrc += src.chromaStride; |
| } |
| } else { |
| ALOGV("%s: Generic->NV21", __FUNCTION__); |
| // Generic copy, always works but not very efficient |
| for (size_t row = 0; row < chromaHeight; row++) { |
| for (size_t col = 0; col < chromaWidth; col++) { |
| *(crcbDst++) = *crSrc; |
| *(crcbDst++) = *cbSrc; |
| crSrc += src.chromaStep; |
| cbSrc += src.chromaStep; |
| } |
| crSrc += chromaGap; |
| cbSrc += chromaGap; |
| } |
| } |
| } else { |
| // flexible YUV chroma to YV12 chroma |
| ALOG_ASSERT(previewFormat == HAL_PIXEL_FORMAT_YV12, |
| "Unexpected preview format 0x%x", previewFormat); |
| uint8_t *crDst = yDst; |
| uint8_t *cbDst = yDst + chromaHeight * dstCStride; |
| if (src.chromaStep == 1) { |
| ALOGV("%s: Fast YV12->YV12", __FUNCTION__); |
| // Source has planar chroma layout, can copy by row |
| for (size_t row = 0; row < chromaHeight; row++) { |
| memcpy(crDst, crSrc, chromaWidth); |
| crDst += dstCStride; |
| crSrc += src.chromaStride; |
| } |
| for (size_t row = 0; row < chromaHeight; row++) { |
| memcpy(cbDst, cbSrc, chromaWidth); |
| cbDst += dstCStride; |
| cbSrc += src.chromaStride; |
| } |
| } else { |
| ALOGV("%s: Generic->YV12", __FUNCTION__); |
| // Generic copy, always works but not very efficient |
| for (size_t row = 0; row < chromaHeight; row++) { |
| for (size_t col = 0; col < chromaWidth; col++) { |
| *(crDst++) = *crSrc; |
| *(cbDst++) = *cbSrc; |
| crSrc += src.chromaStep; |
| cbSrc += src.chromaStep; |
| } |
| crSrc += chromaGap; |
| cbSrc += chromaGap; |
| crDst += dstChromaGap; |
| cbDst += dstChromaGap; |
| } |
| } |
| } |
| |
| return OK; |
| } |
| |
| }; // namespace camera2 |
| }; // namespace android |