/*
* 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
#include <inttypes.h>
#include <utils/Log.h>
#include <utils/Trace.h>
#include "device3/Camera3IOStreamBase.h"
#include "device3/StatusTracker.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,
android_dataspace dataSpace, camera3_stream_rotation_t rotation, int setId) :
Camera3Stream(id, type,
width, height, maxSize, format, dataSpace, rotation, setId),
mTotalBufferCount(0),
mHandoutTotalBufferCount(0),
mHandoutOutputBufferCount(0),
mFrameCount(0),
mLastTimestamp(0) {
mCombinedFence = new Fence();
if (maxSize > 0 &&
(format != HAL_PIXEL_FORMAT_BLOB && format != HAL_PIXEL_FORMAT_RAW_OPAQUE)) {
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 %zu outstanding buffers,"
" buffer signal time is %" PRId64,
__FUNCTION__, mId, mHandoutTotalBufferCount, signalTime);
if (mHandoutTotalBufferCount > 0 || signalTime == INT64_MAX) {
return true;
}
return false;
}
void Camera3IOStreamBase::dump(int fd, const Vector<String16> &args) const {
(void) args;
String8 lines;
uint32_t consumerUsage = 0;
status_t res = getEndpointUsage(&consumerUsage);
if (res != OK) consumerUsage = 0;
lines.appendFormat(" State: %d\n", mState);
lines.appendFormat(" Dims: %d x %d, format 0x%x, dataspace 0x%x\n",
camera3_stream::width, camera3_stream::height,
camera3_stream::format, camera3_stream::data_space);
lines.appendFormat(" Max size: %zu\n", mMaxSize);
lines.appendFormat(" Combined usage: %d, max HAL buffers: %d\n",
camera3_stream::usage | consumerUsage, camera3_stream::max_buffers);
lines.appendFormat(" Frames produced: %d, last timestamp: %" PRId64 " ns\n",
mFrameCount, mLastTimestamp);
lines.appendFormat(" Total buffers: %zu, currently dequeued: %zu\n",
mTotalBufferCount, mHandoutTotalBufferCount);
write(fd, lines.string(), lines.size());
Camera3Stream::dump(fd, args);
}
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;
}
size_t Camera3IOStreamBase::getHandoutOutputBufferCountLocked() {
return mHandoutOutputBufferCount;
}
size_t Camera3IOStreamBase::getHandoutInputBufferCountLocked() {
return (mHandoutTotalBufferCount - mHandoutOutputBufferCount);
}
status_t Camera3IOStreamBase::disconnectLocked() {
switch (mState) {
case STATE_IN_RECONFIG:
case STATE_CONFIGURED:
case STATE_ABANDONED:
// OK
break;
default:
// No connection, nothing to do
ALOGV("%s: Stream %d: Already disconnected",
__FUNCTION__, mId);
return -ENOTCONN;
}
if (mHandoutTotalBufferCount > 0) {
ALOGE("%s: Can't disconnect with %zu buffers still dequeued!",
__FUNCTION__, mHandoutTotalBufferCount);
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,
bool output) {
/**
* 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;
// Inform tracker about becoming busy
if (mHandoutTotalBufferCount == 0 && mState != STATE_IN_CONFIG &&
mState != STATE_IN_RECONFIG && mState != STATE_PREPARING) {
/**
* Avoid a spurious IDLE->ACTIVE->IDLE transition when using buffers
* before/after register_stream_buffers during initial configuration
* or re-configuration, or during prepare pre-allocation
*/
sp<StatusTracker> statusTracker = mStatusTracker.promote();
if (statusTracker != 0) {
statusTracker->markComponentActive(mStatusId);
}
}
mHandoutTotalBufferCount++;
if (output) {
mHandoutOutputBufferCount++;
}
}
status_t Camera3IOStreamBase::getBufferPreconditionCheckLocked() const {
// Allow dequeue during IN_[RE]CONFIG for registration, in
// PREPARING for pre-allocation
if (mState != STATE_CONFIGURED &&
mState != STATE_IN_CONFIG && mState != STATE_IN_RECONFIG &&
mState != STATE_PREPARING) {
ALOGE("%s: Stream %d: Can't get buffers in unconfigured state %d",
__FUNCTION__, mId, mState);
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 (mHandoutTotalBufferCount == 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);
// Res may be an error, but we still want to decrement our owned count
// to enable clean shutdown. So we'll just return the error but otherwise
// carry on
if (releaseFence != 0) {
mCombinedFence = Fence::merge(mName, mCombinedFence, releaseFence);
}
if (output) {
mHandoutOutputBufferCount--;
}
mHandoutTotalBufferCount--;
if (mHandoutTotalBufferCount == 0 && mState != STATE_IN_CONFIG &&
mState != STATE_IN_RECONFIG && mState != STATE_PREPARING) {
/**
* Avoid a spurious IDLE->ACTIVE->IDLE transition when using buffers
* before/after register_stream_buffers during initial configuration
* or re-configuration, or during prepare pre-allocation
*/
ALOGV("%s: Stream %d: All buffers returned; now idle", __FUNCTION__,
mId);
sp<StatusTracker> statusTracker = mStatusTracker.promote();
if (statusTracker != 0) {
statusTracker->markComponentIdle(mStatusId, mCombinedFence);
}
}
mBufferReturnedSignal.signal();
if (output) {
mLastTimestamp = timestamp;
}
return res;
}
}; // namespace camera3
}; // namespace android