| /* |
| * Copyright (C) 2013 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 "Camera3-IOStreamBase" |
| #define ATRACE_TAG ATRACE_TAG_CAMERA |
| //#define LOG_NDEBUG 0 |
| |
| // This is needed for stdint.h to define INT64_MAX in C++ |
| #define __STDC_LIMIT_MACROS |
| |
| #include <utils/Log.h> |
| #include <utils/Trace.h> |
| #include "Camera3IOStreamBase.h" |
| |
| namespace android { |
| |
| namespace camera3 { |
| |
| Camera3IOStreamBase::Camera3IOStreamBase(int id, camera3_stream_type_t type, |
| uint32_t width, uint32_t height, size_t maxSize, int format) : |
| Camera3Stream(id, type, |
| width, height, maxSize, format), |
| mTotalBufferCount(0), |
| mDequeuedBufferCount(0), |
| mFrameCount(0), |
| mLastTimestamp(0) { |
| |
| mCombinedFence = new Fence(); |
| |
| if (maxSize > 0 && format != HAL_PIXEL_FORMAT_BLOB) { |
| ALOGE("%s: Bad format for size-only stream: %d", __FUNCTION__, |
| format); |
| mState = STATE_ERROR; |
| } |
| } |
| |
| Camera3IOStreamBase::~Camera3IOStreamBase() { |
| disconnectLocked(); |
| } |
| |
| bool Camera3IOStreamBase::hasOutstandingBuffersLocked() const { |
| nsecs_t signalTime = mCombinedFence->getSignalTime(); |
| ALOGV("%s: Stream %d: Has %d outstanding buffers," |
| " buffer signal time is %lld", |
| __FUNCTION__, mId, mDequeuedBufferCount, signalTime); |
| if (mDequeuedBufferCount > 0 || signalTime == INT64_MAX) { |
| return true; |
| } |
| return false; |
| } |
| |
| status_t Camera3IOStreamBase::waitUntilIdle(nsecs_t timeout) { |
| status_t res; |
| { |
| Mutex::Autolock l(mLock); |
| while (mDequeuedBufferCount > 0) { |
| if (timeout != TIMEOUT_NEVER) { |
| nsecs_t startTime = systemTime(); |
| res = mBufferReturnedSignal.waitRelative(mLock, timeout); |
| if (res == TIMED_OUT) { |
| return res; |
| } else if (res != OK) { |
| ALOGE("%s: Error waiting for outstanding buffers: %s (%d)", |
| __FUNCTION__, strerror(-res), res); |
| return res; |
| } |
| nsecs_t deltaTime = systemTime() - startTime; |
| if (timeout <= deltaTime) { |
| timeout = 0; |
| } else { |
| timeout -= deltaTime; |
| } |
| } else { |
| res = mBufferReturnedSignal.wait(mLock); |
| if (res != OK) { |
| ALOGE("%s: Error waiting for outstanding buffers: %s (%d)", |
| __FUNCTION__, strerror(-res), res); |
| return res; |
| } |
| } |
| } |
| } |
| |
| // No lock |
| |
| unsigned int timeoutMs; |
| if (timeout == TIMEOUT_NEVER) { |
| timeoutMs = Fence::TIMEOUT_NEVER; |
| } else if (timeout == 0) { |
| timeoutMs = 0; |
| } else { |
| // Round up to wait at least 1 ms |
| timeoutMs = (timeout + 999999) / 1000000; |
| } |
| |
| return mCombinedFence->wait(timeoutMs); |
| } |
| |
| void Camera3IOStreamBase::dump(int fd, const Vector<String16> &args) const { |
| (void) args; |
| String8 lines; |
| lines.appendFormat(" State: %d\n", mState); |
| lines.appendFormat(" Dims: %d x %d, format 0x%x\n", |
| camera3_stream::width, camera3_stream::height, |
| camera3_stream::format); |
| lines.appendFormat(" Max size: %d\n", mMaxSize); |
| lines.appendFormat(" Usage: %d, max HAL buffers: %d\n", |
| camera3_stream::usage, camera3_stream::max_buffers); |
| lines.appendFormat(" Frames produced: %d, last timestamp: %lld ns\n", |
| mFrameCount, mLastTimestamp); |
| lines.appendFormat(" Total buffers: %d, currently dequeued: %d\n", |
| mTotalBufferCount, mDequeuedBufferCount); |
| write(fd, lines.string(), lines.size()); |
| } |
| |
| status_t Camera3IOStreamBase::configureQueueLocked() { |
| status_t res; |
| |
| switch (mState) { |
| case STATE_IN_RECONFIG: |
| res = disconnectLocked(); |
| if (res != OK) { |
| return res; |
| } |
| break; |
| case STATE_IN_CONFIG: |
| // OK |
| break; |
| default: |
| ALOGE("%s: Bad state: %d", __FUNCTION__, mState); |
| return INVALID_OPERATION; |
| } |
| |
| return OK; |
| } |
| |
| size_t Camera3IOStreamBase::getBufferCountLocked() { |
| return mTotalBufferCount; |
| } |
| |
| status_t Camera3IOStreamBase::disconnectLocked() { |
| switch (mState) { |
| case STATE_IN_RECONFIG: |
| case STATE_CONFIGURED: |
| // OK |
| break; |
| default: |
| // No connection, nothing to do |
| ALOGV("%s: Stream %d: Already disconnected", |
| __FUNCTION__, mId); |
| return -ENOTCONN; |
| } |
| |
| if (mDequeuedBufferCount > 0) { |
| ALOGE("%s: Can't disconnect with %d buffers still dequeued!", |
| __FUNCTION__, mDequeuedBufferCount); |
| return INVALID_OPERATION; |
| } |
| |
| return OK; |
| } |
| |
| void Camera3IOStreamBase::handoutBufferLocked(camera3_stream_buffer &buffer, |
| buffer_handle_t *handle, |
| int acquireFence, |
| int releaseFence, |
| camera3_buffer_status_t status) { |
| /** |
| * Note that all fences are now owned by HAL. |
| */ |
| |
| // Handing out a raw pointer to this object. Increment internal refcount. |
| incStrong(this); |
| buffer.stream = this; |
| buffer.buffer = handle; |
| buffer.acquire_fence = acquireFence; |
| buffer.release_fence = releaseFence; |
| buffer.status = status; |
| |
| mDequeuedBufferCount++; |
| } |
| |
| status_t Camera3IOStreamBase::getBufferPreconditionCheckLocked() const { |
| // Allow dequeue during IN_[RE]CONFIG for registration |
| if (mState != STATE_CONFIGURED && |
| mState != STATE_IN_CONFIG && mState != STATE_IN_RECONFIG) { |
| ALOGE("%s: Stream %d: Can't get buffers in unconfigured state %d", |
| __FUNCTION__, mId, mState); |
| return INVALID_OPERATION; |
| } |
| |
| // Only limit dequeue amount when fully configured |
| if (mState == STATE_CONFIGURED && |
| mDequeuedBufferCount == camera3_stream::max_buffers) { |
| ALOGE("%s: Stream %d: Already dequeued maximum number of simultaneous" |
| " buffers (%d)", __FUNCTION__, mId, |
| camera3_stream::max_buffers); |
| return INVALID_OPERATION; |
| } |
| |
| return OK; |
| } |
| |
| status_t Camera3IOStreamBase::returnBufferPreconditionCheckLocked() const { |
| // Allow buffers to be returned in the error state, to allow for disconnect |
| // and in the in-config states for registration |
| if (mState == STATE_CONSTRUCTED) { |
| ALOGE("%s: Stream %d: Can't return buffers in unconfigured state %d", |
| __FUNCTION__, mId, mState); |
| return INVALID_OPERATION; |
| } |
| if (mDequeuedBufferCount == 0) { |
| ALOGE("%s: Stream %d: No buffers outstanding to return", __FUNCTION__, |
| mId); |
| return INVALID_OPERATION; |
| } |
| |
| return OK; |
| } |
| |
| status_t Camera3IOStreamBase::returnAnyBufferLocked( |
| const camera3_stream_buffer &buffer, |
| nsecs_t timestamp, |
| bool output) { |
| status_t res; |
| |
| // returnBuffer may be called from a raw pointer, not a sp<>, and we'll be |
| // decrementing the internal refcount next. In case this is the last ref, we |
| // might get destructed on the decStrong(), so keep an sp around until the |
| // end of the call - otherwise have to sprinkle the decStrong on all exit |
| // points. |
| sp<Camera3IOStreamBase> keepAlive(this); |
| decStrong(this); |
| |
| if ((res = returnBufferPreconditionCheckLocked()) != OK) { |
| return res; |
| } |
| |
| sp<Fence> releaseFence; |
| res = returnBufferCheckedLocked(buffer, timestamp, output, |
| &releaseFence); |
| if (res != OK) { |
| return res; |
| } |
| |
| mCombinedFence = Fence::merge(mName, mCombinedFence, releaseFence); |
| |
| mDequeuedBufferCount--; |
| mBufferReturnedSignal.signal(); |
| |
| if (output) { |
| mLastTimestamp = timestamp; |
| } |
| |
| return OK; |
| } |
| |
| |
| |
| }; // namespace camera3 |
| |
| }; // namespace android |
