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517 lines
22 KiB
517 lines
22 KiB
/*
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* Copyright 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//#define LOG_NDEBUG 0
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#define LOG_TAG "Camera3-BufferManager"
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#define ATRACE_TAG ATRACE_TAG_CAMERA
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#include <gui/ISurfaceComposer.h>
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#include <private/gui/ComposerService.h>
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#include <utils/Log.h>
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#include <utils/Trace.h>
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#include "utils/CameraTraces.h"
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#include "Camera3BufferManager.h"
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namespace android {
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namespace camera3 {
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Camera3BufferManager::Camera3BufferManager() {
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}
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Camera3BufferManager::~Camera3BufferManager() {
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}
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status_t Camera3BufferManager::registerStream(wp<Camera3OutputStream>& stream,
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const StreamInfo& streamInfo) {
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ATRACE_CALL();
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int streamId = streamInfo.streamId;
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StreamSetKey streamSetKey = {streamInfo.streamSetId, streamInfo.isMultiRes};
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if (streamId == CAMERA3_STREAM_ID_INVALID ||
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streamSetKey.id == CAMERA3_STREAM_SET_ID_INVALID) {
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ALOGE("%s: Stream id (%d) or stream set id (%d) is invalid",
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__FUNCTION__, streamId, streamSetKey.id);
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return BAD_VALUE;
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}
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if (streamInfo.totalBufferCount > kMaxBufferCount || streamInfo.totalBufferCount == 0) {
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ALOGE("%s: Stream id (%d) with stream set id (%d) total buffer count %zu is invalid",
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__FUNCTION__, streamId, streamSetKey.id, streamInfo.totalBufferCount);
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return BAD_VALUE;
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}
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if (!streamInfo.isConfigured) {
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ALOGE("%s: Stream (%d) is not configured", __FUNCTION__, streamId);
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return BAD_VALUE;
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}
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// For Gralloc v1, try to allocate a buffer and see if it is successful, otherwise, stream
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// buffer sharing for this newly added stream is not supported. For Gralloc v0, we don't
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// need check this, as the buffers are not really shared between streams, the buffers are
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// allocated for each stream individually, the allocation failure will be checked in
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// getBufferForStream() call.
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if (mGrallocVersion > HARDWARE_DEVICE_API_VERSION(0,1)) {
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// TODO: To be implemented.
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// In case allocation fails, return invalid operation
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return INVALID_OPERATION;
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}
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Mutex::Autolock l(mLock);
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// Check if this stream was registered with different stream set ID, if so, error out.
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for (size_t i = 0; i < mStreamSetMap.size(); i++) {
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ssize_t streamIdx = mStreamSetMap[i].streamInfoMap.indexOfKey(streamId);
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if (streamIdx != NAME_NOT_FOUND &&
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mStreamSetMap[i].streamInfoMap[streamIdx].streamSetId != streamInfo.streamSetId &&
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mStreamSetMap[i].streamInfoMap[streamIdx].isMultiRes != streamInfo.isMultiRes) {
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ALOGE("%s: It is illegal to register the same stream id with different stream set",
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__FUNCTION__);
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return BAD_VALUE;
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}
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}
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// Check if there is an existing stream set registered; if not, create one; otherwise, add this
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// stream info to the existing stream set entry.
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ssize_t setIdx = mStreamSetMap.indexOfKey(streamSetKey);
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if (setIdx == NAME_NOT_FOUND) {
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ALOGV("%s: stream set %d(%d) is not registered to stream set map yet, create it.",
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__FUNCTION__, streamSetKey.id, streamSetKey.isMultiRes);
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// Create stream info map, then add to mStreamsetMap.
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StreamSet newStreamSet;
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setIdx = mStreamSetMap.add(streamSetKey, newStreamSet);
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}
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// Update stream set map and water mark.
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StreamSet& currentStreamSet = mStreamSetMap.editValueAt(setIdx);
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ssize_t streamIdx = currentStreamSet.streamInfoMap.indexOfKey(streamId);
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if (streamIdx != NAME_NOT_FOUND) {
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ALOGW("%s: stream %d was already registered with stream set %d(%d)",
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__FUNCTION__, streamId, streamSetKey.id, streamSetKey.isMultiRes);
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return OK;
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}
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currentStreamSet.streamInfoMap.add(streamId, streamInfo);
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currentStreamSet.handoutBufferCountMap.add(streamId, 0);
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currentStreamSet.attachedBufferCountMap.add(streamId, 0);
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mStreamMap.add(streamId, stream);
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// The max allowed buffer count should be the max of buffer count of each stream inside a stream
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// set.
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if (streamInfo.totalBufferCount > currentStreamSet.maxAllowedBufferCount) {
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currentStreamSet.maxAllowedBufferCount = streamInfo.totalBufferCount;
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}
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return OK;
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}
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status_t Camera3BufferManager::unregisterStream(int streamId, int streamSetId, bool isMultiRes) {
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ATRACE_CALL();
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Mutex::Autolock l(mLock);
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ALOGV("%s: unregister stream %d with stream set %d(%d)", __FUNCTION__,
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streamId, streamSetId, isMultiRes);
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StreamSetKey streamSetKey = {streamSetId, isMultiRes};
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if (!checkIfStreamRegisteredLocked(streamId, streamSetKey)){
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ALOGE("%s: stream %d with set %d(%d) wasn't properly registered to this"
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" buffer manager!", __FUNCTION__, streamId, streamSetId, isMultiRes);
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return BAD_VALUE;
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}
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// De-list all the buffers associated with this stream first.
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StreamSet& currentSet = mStreamSetMap.editValueFor(streamSetKey);
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BufferCountMap& handOutBufferCounts = currentSet.handoutBufferCountMap;
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BufferCountMap& attachedBufferCounts = currentSet.attachedBufferCountMap;
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InfoMap& infoMap = currentSet.streamInfoMap;
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handOutBufferCounts.removeItem(streamId);
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attachedBufferCounts.removeItem(streamId);
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// Remove the stream info from info map and recalculate the buffer count water mark.
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infoMap.removeItem(streamId);
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currentSet.maxAllowedBufferCount = 0;
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for (size_t i = 0; i < infoMap.size(); i++) {
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if (infoMap[i].totalBufferCount > currentSet.maxAllowedBufferCount) {
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currentSet.maxAllowedBufferCount = infoMap[i].totalBufferCount;
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}
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}
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mStreamMap.removeItem(streamId);
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// Lazy solution: when a stream is unregistered, the streams will be reconfigured, reset
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// the water mark and let it grow again.
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currentSet.allocatedBufferWaterMark = 0;
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// Remove this stream set if all its streams have been removed.
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if (handOutBufferCounts.size() == 0 && infoMap.size() == 0) {
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mStreamSetMap.removeItem(streamSetKey);
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}
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return OK;
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}
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void Camera3BufferManager::notifyBufferRemoved(int streamId, int streamSetId, bool isMultiRes) {
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Mutex::Autolock l(mLock);
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StreamSetKey streamSetKey = {streamSetId, isMultiRes};
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StreamSet &streamSet = mStreamSetMap.editValueFor(streamSetKey);
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size_t& attachedBufferCount =
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streamSet.attachedBufferCountMap.editValueFor(streamId);
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attachedBufferCount--;
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}
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status_t Camera3BufferManager::checkAndFreeBufferOnOtherStreamsLocked(
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int streamId, StreamSetKey streamSetKey) {
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StreamId firstOtherStreamId = CAMERA3_STREAM_ID_INVALID;
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StreamSet &streamSet = mStreamSetMap.editValueFor(streamSetKey);
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if (streamSet.streamInfoMap.size() == 1) {
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ALOGV("StreamSet %d(%d) has no other stream available to free",
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streamSetKey.id, streamSetKey.isMultiRes);
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return OK;
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}
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bool freeBufferIsAttached = false;
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for (size_t i = 0; i < streamSet.streamInfoMap.size(); i++) {
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firstOtherStreamId = streamSet.streamInfoMap[i].streamId;
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if (firstOtherStreamId != streamId) {
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size_t otherBufferCount =
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streamSet.handoutBufferCountMap.valueFor(firstOtherStreamId);
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size_t otherAttachedBufferCount =
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streamSet.attachedBufferCountMap.valueFor(firstOtherStreamId);
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if (otherAttachedBufferCount > otherBufferCount) {
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freeBufferIsAttached = true;
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break;
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}
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}
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firstOtherStreamId = CAMERA3_STREAM_ID_INVALID;
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}
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if (firstOtherStreamId == CAMERA3_STREAM_ID_INVALID || !freeBufferIsAttached) {
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ALOGV("StreamSet %d(%d) has no buffer available to free",
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streamSetKey.id, streamSetKey.isMultiRes);
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return OK;
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}
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// This will drop the reference to one free buffer, which will effectively free one
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// buffer (from the free buffer list) for the inactive streams.
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size_t totalAllocatedBufferCount = 0;
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for (size_t i = 0; i < streamSet.attachedBufferCountMap.size(); i++) {
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totalAllocatedBufferCount += streamSet.attachedBufferCountMap[i];
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}
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if (totalAllocatedBufferCount > streamSet.allocatedBufferWaterMark) {
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ALOGV("Stream %d: Freeing buffer: detach", firstOtherStreamId);
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sp<Camera3OutputStream> stream =
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mStreamMap.valueFor(firstOtherStreamId).promote();
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if (stream == nullptr) {
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ALOGE("%s: unable to promote stream %d to detach buffer", __FUNCTION__,
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firstOtherStreamId);
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return INVALID_OPERATION;
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}
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// Detach and then drop the buffer.
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//
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// Need to unlock because the stream may also be calling
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// into the buffer manager in parallel to signal buffer
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// release, or acquire a new buffer.
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bool bufferFreed = false;
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{
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mLock.unlock();
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sp<GraphicBuffer> buffer;
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stream->detachBuffer(&buffer, /*fenceFd*/ nullptr);
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mLock.lock();
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if (buffer.get() != nullptr) {
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bufferFreed = true;
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}
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}
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if (bufferFreed) {
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size_t& otherAttachedBufferCount =
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streamSet.attachedBufferCountMap.editValueFor(firstOtherStreamId);
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otherAttachedBufferCount--;
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}
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}
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return OK;
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}
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status_t Camera3BufferManager::getBufferForStream(int streamId, int streamSetId,
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bool isMultiRes, sp<GraphicBuffer>* gb, int* fenceFd, bool noFreeBufferAtConsumer) {
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ATRACE_CALL();
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Mutex::Autolock l(mLock);
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ALOGV("%s: get buffer for stream %d with stream set %d(%d)", __FUNCTION__,
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streamId, streamSetId, isMultiRes);
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StreamSetKey streamSetKey = {streamSetId, isMultiRes};
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if (!checkIfStreamRegisteredLocked(streamId, streamSetKey)) {
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ALOGE("%s: stream %d is not registered with stream set %d(%d) yet!!!",
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__FUNCTION__, streamId, streamSetId, isMultiRes);
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return BAD_VALUE;
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}
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StreamSet &streamSet = mStreamSetMap.editValueFor(streamSetKey);
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BufferCountMap& handOutBufferCounts = streamSet.handoutBufferCountMap;
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size_t& bufferCount = handOutBufferCounts.editValueFor(streamId);
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BufferCountMap& attachedBufferCounts = streamSet.attachedBufferCountMap;
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size_t& attachedBufferCount = attachedBufferCounts.editValueFor(streamId);
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if (noFreeBufferAtConsumer) {
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attachedBufferCount = bufferCount;
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}
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if (bufferCount >= streamSet.maxAllowedBufferCount) {
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ALOGE("%s: bufferCount (%zu) exceeds the max allowed buffer count (%zu) of this stream set",
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__FUNCTION__, bufferCount, streamSet.maxAllowedBufferCount);
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return INVALID_OPERATION;
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}
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if (attachedBufferCount > bufferCount) {
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// We've already attached more buffers to this stream than we currently have
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// outstanding, so have the stream just use an already-attached buffer
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bufferCount++;
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return ALREADY_EXISTS;
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}
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ALOGV("Stream %d set %d(%d): Get buffer for stream: Allocate new",
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streamId, streamSetId, isMultiRes);
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if (mGrallocVersion < HARDWARE_DEVICE_API_VERSION(1,0)) {
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const StreamInfo& info = streamSet.streamInfoMap.valueFor(streamId);
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GraphicBufferEntry buffer;
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buffer.fenceFd = -1;
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buffer.graphicBuffer = new GraphicBuffer(
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info.width, info.height, PixelFormat(info.format), info.combinedUsage,
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std::string("Camera3BufferManager pid [") +
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std::to_string(getpid()) + "]");
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status_t res = buffer.graphicBuffer->initCheck();
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ALOGV("%s: allocating a new graphic buffer (%dx%d, format 0x%x) %p with handle %p",
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__FUNCTION__, info.width, info.height, info.format,
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buffer.graphicBuffer.get(), buffer.graphicBuffer->handle);
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if (res < 0) {
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ALOGE("%s: graphic buffer allocation failed: (error %d %s) ",
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__FUNCTION__, res, strerror(-res));
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return res;
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}
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ALOGV("%s: allocation done", __FUNCTION__);
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// Increase the hand-out and attached buffer counts for tracking purposes.
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bufferCount++;
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attachedBufferCount++;
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// Update the water mark to be the max hand-out buffer count + 1. An additional buffer is
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// added to reduce the chance of buffer allocation during stream steady state, especially
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// for cases where one stream is active, the other stream may request some buffers randomly.
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if (bufferCount + 1 > streamSet.allocatedBufferWaterMark) {
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streamSet.allocatedBufferWaterMark = bufferCount + 1;
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}
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*gb = buffer.graphicBuffer;
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*fenceFd = buffer.fenceFd;
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ALOGV("%s: get buffer (%p) with handle (%p).",
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__FUNCTION__, buffer.graphicBuffer.get(), buffer.graphicBuffer->handle);
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// Proactively free buffers for other streams if the current number of allocated buffers
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// exceeds the water mark. This only for Gralloc V1, for V2, this logic can also be handled
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// in returnBufferForStream() if we want to free buffer more quickly.
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// TODO: probably should find out all the inactive stream IDs, and free the firstly found
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// buffers for them.
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res = checkAndFreeBufferOnOtherStreamsLocked(streamId, streamSetKey);
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if (res != OK) {
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return res;
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}
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// Since we just allocated one new buffer above, try free one more buffer from other streams
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// to prevent total buffer count from growing
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res = checkAndFreeBufferOnOtherStreamsLocked(streamId, streamSetKey);
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if (res != OK) {
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return res;
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}
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} else {
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// TODO: implement this.
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return BAD_VALUE;
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}
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return OK;
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}
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status_t Camera3BufferManager::onBufferReleased(
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int streamId, int streamSetId, bool isMultiRes, bool* shouldFreeBuffer) {
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ATRACE_CALL();
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if (shouldFreeBuffer == nullptr) {
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ALOGE("%s: shouldFreeBuffer is null", __FUNCTION__);
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return BAD_VALUE;
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}
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Mutex::Autolock l(mLock);
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ALOGV("Stream %d set %d(%d): Buffer released", streamId, streamSetId, isMultiRes);
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*shouldFreeBuffer = false;
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StreamSetKey streamSetKey = {streamSetId, isMultiRes};
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if (!checkIfStreamRegisteredLocked(streamId, streamSetKey)){
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ALOGV("%s: signaling buffer release for an already unregistered stream "
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"(stream %d with set id %d(%d))", __FUNCTION__, streamId, streamSetId,
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isMultiRes);
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return OK;
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}
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if (mGrallocVersion < HARDWARE_DEVICE_API_VERSION(1,0)) {
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StreamSet& streamSet = mStreamSetMap.editValueFor(streamSetKey);
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BufferCountMap& handOutBufferCounts = streamSet.handoutBufferCountMap;
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size_t& bufferCount = handOutBufferCounts.editValueFor(streamId);
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bufferCount--;
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ALOGV("%s: Stream %d set %d(%d): Buffer count now %zu", __FUNCTION__, streamId,
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streamSetId, isMultiRes, bufferCount);
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size_t totalAllocatedBufferCount = 0;
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size_t totalHandOutBufferCount = 0;
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for (size_t i = 0; i < streamSet.attachedBufferCountMap.size(); i++) {
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totalAllocatedBufferCount += streamSet.attachedBufferCountMap[i];
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totalHandOutBufferCount += streamSet.handoutBufferCountMap[i];
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}
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size_t newWaterMark = totalHandOutBufferCount + BUFFER_WATERMARK_DEC_THRESHOLD;
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if (totalAllocatedBufferCount > newWaterMark &&
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streamSet.allocatedBufferWaterMark > newWaterMark) {
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// BufferManager got more than enough buffers, so decrease watermark
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// to trigger more buffers free operation.
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streamSet.allocatedBufferWaterMark = newWaterMark;
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ALOGV("%s: Stream %d set %d(%d): watermark--; now %zu",
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__FUNCTION__, streamId, streamSetId, isMultiRes,
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streamSet.allocatedBufferWaterMark);
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}
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size_t attachedBufferCount = streamSet.attachedBufferCountMap.valueFor(streamId);
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if (attachedBufferCount <= bufferCount) {
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ALOGV("%s: stream %d has no buffer available to free.", __FUNCTION__, streamId);
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}
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bool freeBufferIsAttached = (attachedBufferCount > bufferCount);
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if (freeBufferIsAttached &&
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totalAllocatedBufferCount > streamSet.allocatedBufferWaterMark &&
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attachedBufferCount > bufferCount + BUFFER_FREE_THRESHOLD) {
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ALOGV("%s: free a buffer from stream %d", __FUNCTION__, streamId);
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*shouldFreeBuffer = true;
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}
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} else {
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// TODO: implement gralloc V1 support
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return BAD_VALUE;
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}
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return OK;
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}
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status_t Camera3BufferManager::onBuffersRemoved(int streamId, int streamSetId,
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bool isMultiRes, size_t count) {
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ATRACE_CALL();
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Mutex::Autolock l(mLock);
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ALOGV("Stream %d set %d(%d): Buffer removed", streamId, streamSetId, isMultiRes);
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StreamSetKey streamSetKey = {streamSetId, isMultiRes};
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if (!checkIfStreamRegisteredLocked(streamId, streamSetKey)){
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ALOGV("%s: signaling buffer removal for an already unregistered stream "
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"(stream %d with set id %d(%d))", __FUNCTION__, streamId, streamSetId, isMultiRes);
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return OK;
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}
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if (mGrallocVersion < HARDWARE_DEVICE_API_VERSION(1,0)) {
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StreamSet& streamSet = mStreamSetMap.editValueFor(streamSetKey);
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BufferCountMap& handOutBufferCounts = streamSet.handoutBufferCountMap;
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size_t& totalHandoutCount = handOutBufferCounts.editValueFor(streamId);
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BufferCountMap& attachedBufferCounts = streamSet.attachedBufferCountMap;
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size_t& totalAttachedCount = attachedBufferCounts.editValueFor(streamId);
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if (count > totalHandoutCount) {
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ALOGE("%s: Removed buffer count %zu greater than current handout count %zu",
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__FUNCTION__, count, totalHandoutCount);
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return BAD_VALUE;
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}
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if (count > totalAttachedCount) {
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ALOGE("%s: Removed buffer count %zu greater than current attached count %zu",
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__FUNCTION__, count, totalAttachedCount);
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return BAD_VALUE;
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}
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totalHandoutCount -= count;
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totalAttachedCount -= count;
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ALOGV("%s: Stream %d set %d(%d): Buffer count now %zu, attached buffer count now %zu",
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__FUNCTION__, streamId, streamSetId, isMultiRes, totalHandoutCount,
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totalAttachedCount);
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} else {
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// TODO: implement gralloc V1 support
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return BAD_VALUE;
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}
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return OK;
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}
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void Camera3BufferManager::dump(int fd, const Vector<String16>& args) const {
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Mutex::Autolock l(mLock);
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|
|
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(void) args;
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String8 lines;
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lines.appendFormat(" Total stream sets: %zu\n", mStreamSetMap.size());
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for (size_t i = 0; i < mStreamSetMap.size(); i++) {
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lines.appendFormat(" Stream set %d(%d) has below streams:\n",
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mStreamSetMap.keyAt(i).id, mStreamSetMap.keyAt(i).isMultiRes);
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for (size_t j = 0; j < mStreamSetMap[i].streamInfoMap.size(); j++) {
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lines.appendFormat(" Stream %d\n", mStreamSetMap[i].streamInfoMap[j].streamId);
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}
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lines.appendFormat(" Stream set max allowed buffer count: %zu\n",
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|
mStreamSetMap[i].maxAllowedBufferCount);
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lines.appendFormat(" Stream set buffer count water mark: %zu\n",
|
|
mStreamSetMap[i].allocatedBufferWaterMark);
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|
lines.appendFormat(" Handout buffer counts:\n");
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for (size_t m = 0; m < mStreamSetMap[i].handoutBufferCountMap.size(); m++) {
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int streamId = mStreamSetMap[i].handoutBufferCountMap.keyAt(m);
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size_t bufferCount = mStreamSetMap[i].handoutBufferCountMap.valueAt(m);
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lines.appendFormat(" stream id: %d, buffer count: %zu.\n",
|
|
streamId, bufferCount);
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|
}
|
|
lines.appendFormat(" Attached buffer counts:\n");
|
|
for (size_t m = 0; m < mStreamSetMap[i].attachedBufferCountMap.size(); m++) {
|
|
int streamId = mStreamSetMap[i].attachedBufferCountMap.keyAt(m);
|
|
size_t bufferCount = mStreamSetMap[i].attachedBufferCountMap.valueAt(m);
|
|
lines.appendFormat(" stream id: %d, attached buffer count: %zu.\n",
|
|
streamId, bufferCount);
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|
}
|
|
}
|
|
write(fd, lines.string(), lines.size());
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|
}
|
|
|
|
bool Camera3BufferManager::checkIfStreamRegisteredLocked(int streamId,
|
|
StreamSetKey streamSetKey) const {
|
|
ssize_t setIdx = mStreamSetMap.indexOfKey(streamSetKey);
|
|
if (setIdx == NAME_NOT_FOUND) {
|
|
ALOGV("%s: stream set %d(%d) is not registered to stream set map yet!",
|
|
__FUNCTION__, streamSetKey.id, streamSetKey.isMultiRes);
|
|
return false;
|
|
}
|
|
|
|
ssize_t streamIdx = mStreamSetMap.valueAt(setIdx).streamInfoMap.indexOfKey(streamId);
|
|
if (streamIdx == NAME_NOT_FOUND) {
|
|
ALOGV("%s: stream %d is not registered to stream info map yet!", __FUNCTION__, streamId);
|
|
return false;
|
|
}
|
|
|
|
size_t bufferWaterMark = mStreamSetMap[setIdx].maxAllowedBufferCount;
|
|
if (bufferWaterMark == 0 || bufferWaterMark > kMaxBufferCount) {
|
|
ALOGW("%s: stream %d with stream set %d(%d) is not registered correctly to stream set map,"
|
|
" as the water mark (%zu) is wrong!",
|
|
__FUNCTION__, streamId, streamSetKey.id, streamSetKey.isMultiRes,
|
|
bufferWaterMark);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
} // namespace camera3
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|
} // namespace android
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