/*
* Copyright 2018 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.
*/
#include <dvr/dvr_api.h>
#include <gui/BufferHubProducer.h>
#include <inttypes.h>
#include <log/log.h>
#include <system/window.h>
#include <ui/BufferHubBuffer.h>
namespace android {
using namespace dvr;
/* static */
sp<BufferHubProducer> BufferHubProducer::Create(const std::shared_ptr<ProducerQueue>& queue) {
sp<BufferHubProducer> producer = new BufferHubProducer;
producer->queue_ = queue;
return producer;
}
/* static */
sp<BufferHubProducer> BufferHubProducer::Create(ProducerQueueParcelable parcelable) {
if (!parcelable.IsValid()) {
ALOGE("BufferHubProducer::Create: Invalid producer parcelable.");
return nullptr;
}
sp<BufferHubProducer> producer = new BufferHubProducer;
producer->queue_ = ProducerQueue::Import(parcelable.TakeChannelHandle());
return producer;
}
status_t BufferHubProducer::requestBuffer(int slot, sp<GraphicBuffer>* buf) {
ALOGV("requestBuffer: slot=%d", slot);
std::unique_lock<std::mutex> lock(mutex_);
if (connected_api_ == kNoConnectedApi) {
ALOGE("requestBuffer: BufferHubProducer has no connected producer");
return NO_INIT;
}
if (slot < 0 || slot >= max_buffer_count_) {
ALOGE("requestBuffer: slot index %d out of range [0, %d)", slot, max_buffer_count_);
return BAD_VALUE;
} else if (!buffers_[slot].mBufferState.isDequeued()) {
ALOGE("requestBuffer: slot %d is not owned by the producer (state = %s)", slot,
buffers_[slot].mBufferState.string());
return BAD_VALUE;
} else if (buffers_[slot].mGraphicBuffer != nullptr) {
ALOGE("requestBuffer: slot %d is not empty.", slot);
return BAD_VALUE;
} else if (buffers_[slot].mProducerBuffer == nullptr) {
ALOGE("requestBuffer: slot %d is not dequeued.", slot);
return BAD_VALUE;
}
const auto& producer_buffer = buffers_[slot].mProducerBuffer;
sp<GraphicBuffer> graphic_buffer = producer_buffer->buffer()->buffer();
buffers_[slot].mGraphicBuffer = graphic_buffer;
buffers_[slot].mRequestBufferCalled = true;
*buf = graphic_buffer;
return NO_ERROR;
}
status_t BufferHubProducer::setMaxDequeuedBufferCount(int max_dequeued_buffers) {
ALOGV("setMaxDequeuedBufferCount: max_dequeued_buffers=%d", max_dequeued_buffers);
std::unique_lock<std::mutex> lock(mutex_);
if (max_dequeued_buffers <= 0 ||
max_dequeued_buffers >
int(BufferHubQueue::kMaxQueueCapacity - kDefaultUndequeuedBuffers)) {
ALOGE("setMaxDequeuedBufferCount: %d out of range (0, %zu]", max_dequeued_buffers,
BufferHubQueue::kMaxQueueCapacity);
return BAD_VALUE;
}
// The new dequeued_buffers count should not be violated by the number
// of currently dequeued buffers.
int dequeued_count = 0;
for (const auto& buf : buffers_) {
if (buf.mBufferState.isDequeued()) {
dequeued_count++;
}
}
if (dequeued_count > max_dequeued_buffers) {
ALOGE("setMaxDequeuedBufferCount: the requested dequeued_buffers"
"count (%d) exceeds the current dequeued buffer count (%d)",
max_dequeued_buffers, dequeued_count);
return BAD_VALUE;
}
max_dequeued_buffer_count_ = max_dequeued_buffers;
return NO_ERROR;
}
status_t BufferHubProducer::setAsyncMode(bool async) {
if (async) {
// TODO(b/36724099) BufferHubQueue's consumer end always acquires the buffer
// automatically and behaves differently from IGraphicBufferConsumer. Thus,
// android::BufferQueue's async mode (a.k.a. allocating an additional buffer
// to prevent dequeueBuffer from being blocking) technically does not apply
// here.
//
// In Daydream, non-blocking producer side dequeue is guaranteed by careful
// buffer consumer implementations. In another word, BufferHubQueue based
// dequeueBuffer should never block whether setAsyncMode(true) is set or
// not.
//
// See: IGraphicBufferProducer::setAsyncMode and
// BufferQueueProducer::setAsyncMode for more about original implementation.
ALOGW("BufferHubProducer::setAsyncMode: BufferHubQueue should always be "
"asynchronous. This call makes no effact.");
return NO_ERROR;
}
return NO_ERROR;
}
status_t BufferHubProducer::dequeueBuffer(int* out_slot, sp<Fence>* out_fence, uint32_t width,
uint32_t height, PixelFormat format, uint64_t usage,
uint64_t* /*outBufferAge*/,
FrameEventHistoryDelta* /* out_timestamps */) {
ALOGV("dequeueBuffer: w=%u, h=%u, format=%d, usage=%" PRIu64, width, height, format, usage);
status_t ret;
std::unique_lock<std::mutex> lock(mutex_);
if (connected_api_ == kNoConnectedApi) {
ALOGE("dequeueBuffer: BufferQueue has no connected producer");
return NO_INIT;
}
const uint32_t kLayerCount = 1;
if (int32_t(queue_->capacity()) < max_dequeued_buffer_count_ + kDefaultUndequeuedBuffers) {
// Lazy allocation. When the capacity of |queue_| has not reached
// |max_dequeued_buffer_count_|, allocate new buffer.
// TODO(jwcai) To save memory, the really reasonable thing to do is to go
// over existing slots and find first existing one to dequeue.
ret = AllocateBuffer(width, height, kLayerCount, format, usage);
if (ret < 0) return ret;
}
size_t slot = 0;
std::shared_ptr<ProducerBuffer> producer_buffer;
for (size_t retry = 0; retry < BufferHubQueue::kMaxQueueCapacity; retry++) {
LocalHandle fence;
auto buffer_status = queue_->Dequeue(dequeue_timeout_ms_, &slot, &fence);
if (!buffer_status) return NO_MEMORY;
producer_buffer = buffer_status.take();
if (!producer_buffer) return NO_MEMORY;
if (width == producer_buffer->width() && height == producer_buffer->height() &&
uint32_t(format) == producer_buffer->format()) {
// The producer queue returns a producer buffer matches the request.
break;
}
// Needs reallocation.
// TODO(jwcai) Consider use VLOG instead if we find this log is not useful.
ALOGI("dequeueBuffer: requested buffer (w=%u, h=%u, format=%u) is different "
"from the buffer returned at slot: %zu (w=%u, h=%u, format=%u). Need "
"re-allocattion.",
width, height, format, slot, producer_buffer->width(), producer_buffer->height(),
producer_buffer->format());
// Mark the slot as reallocating, so that later we can set
// BUFFER_NEEDS_REALLOCATION when the buffer actually get dequeued.
buffers_[slot].mIsReallocating = true;
// Remove the old buffer once the allocation before allocating its
// replacement.
RemoveBuffer(slot);
// Allocate a new producer buffer with new buffer configs. Note that if
// there are already multiple buffers in the queue, the next one returned
// from |queue_->Dequeue| may not be the new buffer we just reallocated.
// Retry up to BufferHubQueue::kMaxQueueCapacity times.
ret = AllocateBuffer(width, height, kLayerCount, format, usage);
if (ret < 0) return ret;
}
// With the BufferHub backed solution. Buffer slot returned from
// |queue_->Dequeue| is guaranteed to avaiable for producer's use.
// It's either in free state (if the buffer has never been used before) or
// in queued state (if the buffer has been dequeued and queued back to
// BufferHubQueue).
LOG_ALWAYS_FATAL_IF((!buffers_[slot].mBufferState.isFree() &&
!buffers_[slot].mBufferState.isQueued()),
"dequeueBuffer: slot %zu is not free or queued, actual state: %s.", slot,
buffers_[slot].mBufferState.string());
buffers_[slot].mBufferState.freeQueued();
buffers_[slot].mBufferState.dequeue();
ALOGV("dequeueBuffer: slot=%zu", slot);
// TODO(jwcai) Handle fence properly. |BufferHub| has full fence support, we
// just need to exopose that through |BufferHubQueue| once we need fence.
*out_fence = Fence::NO_FENCE;
*out_slot = int(slot);
ret = NO_ERROR;
if (buffers_[slot].mIsReallocating) {
ret |= BUFFER_NEEDS_REALLOCATION;
buffers_[slot].mIsReallocating = false;
}
return ret;
}
status_t BufferHubProducer::detachBuffer(int slot) {
ALOGV("detachBuffer: slot=%d", slot);
std::unique_lock<std::mutex> lock(mutex_);
return DetachBufferLocked(static_cast<size_t>(slot));
}
status_t BufferHubProducer::DetachBufferLocked(size_t slot) {
if (connected_api_ == kNoConnectedApi) {
ALOGE("detachBuffer: BufferHubProducer is not connected.");
return NO_INIT;
}
if (slot >= static_cast<size_t>(max_buffer_count_)) {
ALOGE("detachBuffer: slot index %zu out of range [0, %d)", slot, max_buffer_count_);
return BAD_VALUE;
} else if (!buffers_[slot].mBufferState.isDequeued()) {
ALOGE("detachBuffer: slot %zu is not owned by the producer (state = %s)", slot,
buffers_[slot].mBufferState.string());
return BAD_VALUE;
} else if (!buffers_[slot].mRequestBufferCalled) {
ALOGE("detachBuffer: buffer in slot %zu has not been requested", slot);
return BAD_VALUE;
}
std::shared_ptr<ProducerBuffer> producer_buffer = queue_->GetBuffer(slot);
if (producer_buffer == nullptr || producer_buffer->buffer() == nullptr) {
ALOGE("detachBuffer: Invalid ProducerBuffer at slot %zu.", slot);
return BAD_VALUE;
}
sp<GraphicBuffer> graphic_buffer = producer_buffer->buffer()->buffer();
if (graphic_buffer == nullptr) {
ALOGE("detachBuffer: Invalid GraphicBuffer at slot %zu.", slot);
return BAD_VALUE;
}
// Remove the ProducerBuffer from the ProducerQueue.
status_t error = RemoveBuffer(slot);
if (error != NO_ERROR) {
ALOGE("detachBuffer: Failed to remove buffer, slot=%zu, error=%d.", slot, error);
return error;
}
// Here we need to convert the existing ProducerBuffer into a DetachedBufferHandle and inject
// the handle into the GraphicBuffer object at the requested slot.
auto status_or_handle = producer_buffer->Detach();
if (!status_or_handle.ok()) {
ALOGE("detachBuffer: Failed to detach from a ProducerBuffer at slot %zu, error=%d.", slot,
status_or_handle.error());
return BAD_VALUE;
}
// TODO(b/70912269): Reimplement BufferHubProducer::DetachBufferLocked() once GraphicBuffer can
// be directly backed by BufferHub.
return INVALID_OPERATION;
}
status_t BufferHubProducer::detachNextBuffer(sp<GraphicBuffer>* out_buffer, sp<Fence>* out_fence) {
ALOGV("detachNextBuffer.");
if (out_buffer == nullptr || out_fence == nullptr) {
ALOGE("detachNextBuffer: Invalid parameter: out_buffer=%p, out_fence=%p", out_buffer,
out_fence);
return BAD_VALUE;
}
std::unique_lock<std::mutex> lock(mutex_);
if (connected_api_ == kNoConnectedApi) {
ALOGE("detachNextBuffer: BufferHubProducer is not connected.");
return NO_INIT;
}
// detachNextBuffer is equivalent to calling dequeueBuffer, requestBuffer, and detachBuffer in
// sequence, except for two things:
//
// 1) It is unnecessary to know the dimensions, format, or usage of the next buffer, i.e. the
// function just returns whatever ProducerBuffer is available from the ProducerQueue and no
// buffer allocation or re-allocation will happen.
// 2) It will not block, since if it cannot find an appropriate buffer to return, it will return
// an error instead.
size_t slot = 0;
LocalHandle fence;
// First, dequeue a ProducerBuffer from the ProducerQueue with no timeout. Report error
// immediately if ProducerQueue::Dequeue() fails.
auto status_or_buffer = queue_->Dequeue(/*timeout=*/0, &slot, &fence);
if (!status_or_buffer.ok()) {
ALOGE("detachNextBuffer: Failed to dequeue buffer, error=%d.", status_or_buffer.error());
return NO_MEMORY;
}
std::shared_ptr<ProducerBuffer> producer_buffer = status_or_buffer.take();
if (producer_buffer == nullptr) {
ALOGE("detachNextBuffer: Dequeued buffer is null.");
return NO_MEMORY;
}
// With the BufferHub backed solution, slot returned from |queue_->Dequeue| is guaranteed to
// be available for producer's use. It's either in free state (if the buffer has never been used
// before) or in queued state (if the buffer has been dequeued and queued back to
// BufferHubQueue).
if (!buffers_[slot].mBufferState.isFree() && !buffers_[slot].mBufferState.isQueued()) {
ALOGE("detachNextBuffer: slot %zu is not free or queued, actual state: %s.", slot,
buffers_[slot].mBufferState.string());
return BAD_VALUE;
}
if (buffers_[slot].mProducerBuffer == nullptr) {
ALOGE("detachNextBuffer: ProducerBuffer at slot %zu is null.", slot);
return BAD_VALUE;
}
if (buffers_[slot].mProducerBuffer->id() != producer_buffer->id()) {
ALOGE("detachNextBuffer: ProducerBuffer at slot %zu has mismatched id, actual: "
"%d, expected: %d.",
slot, buffers_[slot].mProducerBuffer->id(), producer_buffer->id());
return BAD_VALUE;
}
ALOGV("detachNextBuffer: slot=%zu", slot);
buffers_[slot].mBufferState.freeQueued();
buffers_[slot].mBufferState.dequeue();
// Second, request the buffer.
sp<GraphicBuffer> graphic_buffer = producer_buffer->buffer()->buffer();
buffers_[slot].mGraphicBuffer = producer_buffer->buffer()->buffer();
// Finally, detach the buffer and then return.
status_t error = DetachBufferLocked(slot);
if (error == NO_ERROR) {
*out_fence = new Fence(fence.Release());
*out_buffer = graphic_buffer;
}
return error;
}
status_t BufferHubProducer::attachBuffer(int* out_slot, const sp<GraphicBuffer>& buffer) {
// In the BufferHub design, all buffers are allocated and owned by the BufferHub. Thus only
// GraphicBuffers that are originated from BufferHub can be attached to a BufferHubProducer.
ALOGV("queueBuffer: buffer=%p", buffer.get());
if (out_slot == nullptr) {
ALOGE("attachBuffer: out_slot cannot be NULL.");
return BAD_VALUE;
}
if (buffer == nullptr) {
ALOGE("attachBuffer: invalid GraphicBuffer.");
return BAD_VALUE;
}
std::unique_lock<std::mutex> lock(mutex_);
if (connected_api_ == kNoConnectedApi) {
ALOGE("attachBuffer: BufferQueue has no connected producer");
return NO_INIT;
}
// Before attaching the buffer, caller is supposed to call
// IGraphicBufferProducer::setGenerationNumber to inform the
// BufferHubProducer the next generation number.
if (buffer->getGenerationNumber() != generation_number_) {
ALOGE("attachBuffer: Mismatched generation number, buffer: %u, queue: %u.",
buffer->getGenerationNumber(), generation_number_);
return BAD_VALUE;
}
// TODO(b/70912269): Reimplement BufferHubProducer::DetachBufferLocked() once GraphicBuffer can
// be directly backed by BufferHub.
return INVALID_OPERATION;
}
status_t BufferHubProducer::queueBuffer(int slot, const QueueBufferInput& input,
QueueBufferOutput* output) {
ALOGV("queueBuffer: slot %d", slot);
if (output == nullptr) {
return BAD_VALUE;
}
int64_t timestamp;
bool is_auto_timestamp;
android_dataspace dataspace;
Rect crop(Rect::EMPTY_RECT);
int scaling_mode;
uint32_t transform;
sp<Fence> fence;
input.deflate(×tamp, &is_auto_timestamp, &dataspace, &crop, &scaling_mode, &transform,
&fence);
// Check input scaling mode is valid.
switch (scaling_mode) {
case NATIVE_WINDOW_SCALING_MODE_FREEZE:
case NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW:
case NATIVE_WINDOW_SCALING_MODE_SCALE_CROP:
case NATIVE_WINDOW_SCALING_MODE_NO_SCALE_CROP:
break;
default:
ALOGE("queueBuffer: unknown scaling mode %d", scaling_mode);
return BAD_VALUE;
}
// Check input fence is valid.
if (fence == nullptr) {
ALOGE("queueBuffer: fence is NULL");
return BAD_VALUE;
}
std::unique_lock<std::mutex> lock(mutex_);
if (connected_api_ == kNoConnectedApi) {
ALOGE("queueBuffer: BufferQueue has no connected producer");
return NO_INIT;
}
if (slot < 0 || slot >= max_buffer_count_) {
ALOGE("queueBuffer: slot index %d out of range [0, %d)", slot, max_buffer_count_);
return BAD_VALUE;
} else if (!buffers_[slot].mBufferState.isDequeued()) {
ALOGE("queueBuffer: slot %d is not owned by the producer (state = %s)", slot,
buffers_[slot].mBufferState.string());
return BAD_VALUE;
} else if ((!buffers_[slot].mRequestBufferCalled || buffers_[slot].mGraphicBuffer == nullptr)) {
ALOGE("queueBuffer: slot %d is not requested (mRequestBufferCalled=%d, "
"mGraphicBuffer=%p)",
slot, buffers_[slot].mRequestBufferCalled, buffers_[slot].mGraphicBuffer.get());
return BAD_VALUE;
}
// Post the producer buffer with timestamp in the metadata.
const auto& producer_buffer = buffers_[slot].mProducerBuffer;
// Check input crop is not out of boundary of current buffer.
Rect buffer_rect(producer_buffer->width(), producer_buffer->height());
Rect cropped_rect(Rect::EMPTY_RECT);
crop.intersect(buffer_rect, &cropped_rect);
if (cropped_rect != crop) {
ALOGE("queueBuffer: slot %d has out-of-boundary crop.", slot);
return BAD_VALUE;
}
LocalHandle fence_fd(fence->isValid() ? fence->dup() : -1);
DvrNativeBufferMetadata meta_data;
meta_data.timestamp = timestamp;
meta_data.is_auto_timestamp = int32_t(is_auto_timestamp);
meta_data.dataspace = int32_t(dataspace);
meta_data.crop_left = crop.left;
meta_data.crop_top = crop.top;
meta_data.crop_right = crop.right;
meta_data.crop_bottom = crop.bottom;
meta_data.scaling_mode = int32_t(scaling_mode);
meta_data.transform = int32_t(transform);
producer_buffer->PostAsync(&meta_data, fence_fd);
buffers_[slot].mBufferState.queue();
output->width = producer_buffer->width();
output->height = producer_buffer->height();
output->transformHint = 0; // default value, we don't use it yet.
// |numPendingBuffers| counts of the number of buffers that has been enqueued
// by the producer but not yet acquired by the consumer. Due to the nature
// of BufferHubQueue design, this is hard to trace from the producer's client
// side, but it's safe to assume it's zero.
output->numPendingBuffers = 0;
// Note that we are not setting nextFrameNumber here as it seems to be only
// used by surface flinger. See more at b/22802885, ag/791760.
output->nextFrameNumber = 0;
return NO_ERROR;
}
status_t BufferHubProducer::cancelBuffer(int slot, const sp<Fence>& fence) {
ALOGV(__FUNCTION__);
std::unique_lock<std::mutex> lock(mutex_);
if (connected_api_ == kNoConnectedApi) {
ALOGE("cancelBuffer: BufferQueue has no connected producer");
return NO_INIT;
}
if (slot < 0 || slot >= max_buffer_count_) {
ALOGE("cancelBuffer: slot index %d out of range [0, %d)", slot, max_buffer_count_);
return BAD_VALUE;
} else if (!buffers_[slot].mBufferState.isDequeued()) {
ALOGE("cancelBuffer: slot %d is not owned by the producer (state = %s)", slot,
buffers_[slot].mBufferState.string());
return BAD_VALUE;
} else if (fence == nullptr) {
ALOGE("cancelBuffer: fence is NULL");
return BAD_VALUE;
}
auto producer_buffer = buffers_[slot].mProducerBuffer;
queue_->Enqueue(producer_buffer, size_t(slot), 0U);
buffers_[slot].mBufferState.cancel();
buffers_[slot].mFence = fence;
ALOGV("cancelBuffer: slot %d", slot);
return NO_ERROR;
}
status_t BufferHubProducer::query(int what, int* out_value) {
ALOGV(__FUNCTION__);
std::unique_lock<std::mutex> lock(mutex_);
if (out_value == nullptr) {
ALOGE("query: out_value was NULL");
return BAD_VALUE;
}
int value = 0;
switch (what) {
case NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS:
// TODO(b/36187402) This should be the maximum number of buffers that this
// producer queue's consumer can acquire. Set to be at least one. Need to
// find a way to set from the consumer side.
value = kDefaultUndequeuedBuffers;
break;
case NATIVE_WINDOW_BUFFER_AGE:
value = 0;
break;
case NATIVE_WINDOW_WIDTH:
value = int32_t(queue_->default_width());
break;
case NATIVE_WINDOW_HEIGHT:
value = int32_t(queue_->default_height());
break;
case NATIVE_WINDOW_FORMAT:
value = int32_t(queue_->default_format());
break;
case NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND:
// BufferHubQueue is always operating in async mode, thus semantically
// consumer can never be running behind. See BufferQueueCore.cpp core
// for more information about the original meaning of this flag.
value = 0;
break;
case NATIVE_WINDOW_CONSUMER_USAGE_BITS:
// TODO(jwcai) This is currently not implement as we don't need
// IGraphicBufferConsumer parity.
value = 0;
break;
case NATIVE_WINDOW_DEFAULT_DATASPACE:
// TODO(jwcai) Return the default value android::BufferQueue is using as
// there is no way dvr::ConsumerQueue can set it.
value = 0; // HAL_DATASPACE_UNKNOWN
break;
case NATIVE_WINDOW_STICKY_TRANSFORM:
// TODO(jwcai) Return the default value android::BufferQueue is using as
// there is no way dvr::ConsumerQueue can set it.
value = 0;
break;
case NATIVE_WINDOW_CONSUMER_IS_PROTECTED:
// In Daydream's implementation, the consumer end (i.e. VR Compostior)
// knows how to handle protected buffers.
value = 1;
break;
default:
return BAD_VALUE;
}
ALOGV("query: key=%d, v=%d", what, value);
*out_value = value;
return NO_ERROR;
}
status_t BufferHubProducer::connect(const sp<IProducerListener>& /* listener */, int api,
bool /* producer_controlled_by_app */,
QueueBufferOutput* output) {
// Consumer interaction are actually handled by buffer hub, and we need
// to maintain consumer operations here. We only need to perform basic input
// parameter checks here.
ALOGV(__FUNCTION__);
if (output == nullptr) {
return BAD_VALUE;
}
std::unique_lock<std::mutex> lock(mutex_);
if (connected_api_ != kNoConnectedApi) {
return BAD_VALUE;
}
if (!queue_->is_connected()) {
ALOGE("BufferHubProducer::connect: This BufferHubProducer is not "
"connected to bufferhud. Has it been taken out as a parcelable?");
return BAD_VALUE;
}
switch (api) {
case NATIVE_WINDOW_API_EGL:
case NATIVE_WINDOW_API_CPU:
case NATIVE_WINDOW_API_MEDIA:
case NATIVE_WINDOW_API_CAMERA:
connected_api_ = api;
output->width = queue_->default_width();
output->height = queue_->default_height();
// default values, we don't use them yet.
output->transformHint = 0;
output->numPendingBuffers = 0;
output->nextFrameNumber = 0;
output->bufferReplaced = false;
break;
default:
ALOGE("BufferHubProducer::connect: unknow API %d", api);
return BAD_VALUE;
}
return NO_ERROR;
}
status_t BufferHubProducer::disconnect(int api, DisconnectMode /*mode*/) {
// Consumer interaction are actually handled by buffer hub, and we need
// to maintain consumer operations here. We only need to perform basic input
// parameter checks here.
ALOGV(__FUNCTION__);
std::unique_lock<std::mutex> lock(mutex_);
if (kNoConnectedApi == connected_api_) {
return NO_INIT;
} else if (api != connected_api_) {
return BAD_VALUE;
}
FreeAllBuffers();
connected_api_ = kNoConnectedApi;
return NO_ERROR;
}
status_t BufferHubProducer::setSidebandStream(const sp<NativeHandle>& stream) {
if (stream != nullptr) {
// TODO(jwcai) Investigate how is is used, maybe use BufferHubBuffer's
// metadata.
ALOGE("SidebandStream is not currently supported.");
return INVALID_OPERATION;
}
return NO_ERROR;
}
void BufferHubProducer::allocateBuffers(uint32_t /* width */, uint32_t /* height */,
PixelFormat /* format */, uint64_t /* usage */) {
// TODO(jwcai) |allocateBuffers| aims to preallocate up to the maximum number
// of buffers permitted by the current BufferQueue configuration (aka
// |max_buffer_count_|).
ALOGE("BufferHubProducer::allocateBuffers not implemented.");
}
status_t BufferHubProducer::allowAllocation(bool /* allow */) {
ALOGE("BufferHubProducer::allowAllocation not implemented.");
return INVALID_OPERATION;
}
status_t BufferHubProducer::setGenerationNumber(uint32_t generation_number) {
ALOGV(__FUNCTION__);
std::unique_lock<std::mutex> lock(mutex_);
generation_number_ = generation_number;
return NO_ERROR;
}
String8 BufferHubProducer::getConsumerName() const {
// BufferHub based implementation could have one to many producer/consumer
// relationship, thus |getConsumerName| from the producer side does not
// make any sense.
ALOGE("BufferHubProducer::getConsumerName not supported.");
return String8("BufferHubQueue::DummyConsumer");
}
status_t BufferHubProducer::setSharedBufferMode(bool shared_buffer_mode) {
if (shared_buffer_mode) {
ALOGE("BufferHubProducer::setSharedBufferMode(true) is not supported.");
// TODO(b/36373181) Front buffer mode for buffer hub queue as ANativeWindow.
return INVALID_OPERATION;
}
// Setting to default should just work as a no-op.
return NO_ERROR;
}
status_t BufferHubProducer::setAutoRefresh(bool auto_refresh) {
if (auto_refresh) {
ALOGE("BufferHubProducer::setAutoRefresh(true) is not supported.");
return INVALID_OPERATION;
}
// Setting to default should just work as a no-op.
return NO_ERROR;
}
status_t BufferHubProducer::setDequeueTimeout(nsecs_t timeout) {
ALOGV(__FUNCTION__);
std::unique_lock<std::mutex> lock(mutex_);
dequeue_timeout_ms_ = static_cast<int>(timeout / (1000 * 1000));
return NO_ERROR;
}
status_t BufferHubProducer::getLastQueuedBuffer(sp<GraphicBuffer>* /* out_buffer */,
sp<Fence>* /* out_fence */,
float /*out_transform_matrix*/[16]) {
ALOGE("BufferHubProducer::getLastQueuedBuffer not implemented.");
return INVALID_OPERATION;
}
void BufferHubProducer::getFrameTimestamps(FrameEventHistoryDelta* /*outDelta*/) {
ALOGE("BufferHubProducer::getFrameTimestamps not implemented.");
}
status_t BufferHubProducer::getUniqueId(uint64_t* out_id) const {
ALOGV(__FUNCTION__);
*out_id = unique_id_;
return NO_ERROR;
}
status_t BufferHubProducer::getConsumerUsage(uint64_t* out_usage) const {
ALOGV(__FUNCTION__);
// same value as returned by querying NATIVE_WINDOW_CONSUMER_USAGE_BITS
*out_usage = 0;
return NO_ERROR;
}
status_t BufferHubProducer::TakeAsParcelable(ProducerQueueParcelable* out_parcelable) {
if (!out_parcelable || out_parcelable->IsValid()) return BAD_VALUE;
if (connected_api_ != kNoConnectedApi) {
ALOGE("BufferHubProducer::TakeAsParcelable: BufferHubProducer has "
"connected client. Must disconnect first.");
return BAD_VALUE;
}
if (!queue_->is_connected()) {
ALOGE("BufferHubProducer::TakeAsParcelable: This BufferHubProducer "
"is not connected to bufferhud. Has it been taken out as a "
"parcelable?");
return BAD_VALUE;
}
auto status = queue_->TakeAsParcelable();
if (!status) {
ALOGE("BufferHubProducer::TakeAsParcelable: Failed to take out "
"ProducuerQueueParcelable from the producer queue, error: %s.",
status.GetErrorMessage().c_str());
return BAD_VALUE;
}
*out_parcelable = status.take();
return NO_ERROR;
}
status_t BufferHubProducer::AllocateBuffer(uint32_t width, uint32_t height, uint32_t layer_count,
PixelFormat format, uint64_t usage) {
auto status = queue_->AllocateBuffer(width, height, layer_count, uint32_t(format), usage);
if (!status) {
ALOGE("BufferHubProducer::AllocateBuffer: Failed to allocate buffer: %s",
status.GetErrorMessage().c_str());
return NO_MEMORY;
}
size_t slot = status.get();
auto producer_buffer = queue_->GetBuffer(slot);
LOG_ALWAYS_FATAL_IF(producer_buffer == nullptr,
"Failed to get the producer buffer at slot: %zu", slot);
buffers_[slot].mProducerBuffer = producer_buffer;
return NO_ERROR;
}
status_t BufferHubProducer::RemoveBuffer(size_t slot) {
auto status = queue_->RemoveBuffer(slot);
if (!status) {
ALOGE("BufferHubProducer::RemoveBuffer: Failed to remove buffer at slot: %zu, error: %s.",
slot, status.GetErrorMessage().c_str());
return INVALID_OPERATION;
}
// Reset in memory objects related the the buffer.
buffers_[slot].mProducerBuffer = nullptr;
buffers_[slot].mBufferState.detachProducer();
buffers_[slot].mFence = Fence::NO_FENCE;
buffers_[slot].mGraphicBuffer = nullptr;
buffers_[slot].mRequestBufferCalled = false;
return NO_ERROR;
}
status_t BufferHubProducer::FreeAllBuffers() {
for (size_t slot = 0; slot < BufferHubQueue::kMaxQueueCapacity; slot++) {
// Reset in memory objects related the the buffer.
buffers_[slot].mProducerBuffer = nullptr;
buffers_[slot].mBufferState.reset();
buffers_[slot].mFence = Fence::NO_FENCE;
buffers_[slot].mGraphicBuffer = nullptr;
buffers_[slot].mRequestBufferCalled = false;
}
auto status = queue_->FreeAllBuffers();
if (!status) {
ALOGE("BufferHubProducer::FreeAllBuffers: Failed to free all buffers on "
"the queue: %s",
status.GetErrorMessage().c_str());
}
if (queue_->capacity() != 0 || queue_->count() != 0) {
LOG_ALWAYS_FATAL("BufferHubProducer::FreeAllBuffers: Not all buffers are freed.");
}
return NO_ERROR;
}
status_t BufferHubProducer::exportToParcel(Parcel* parcel) {
status_t res = TakeAsParcelable(&pending_producer_parcelable_);
if (res != NO_ERROR) return res;
if (!pending_producer_parcelable_.IsValid()) {
ALOGE("BufferHubProducer::exportToParcel: Invalid parcelable object.");
return BAD_VALUE;
}
res = parcel->writeUint32(USE_BUFFER_HUB);
if (res != NO_ERROR) {
ALOGE("BufferHubProducer::exportToParcel: Cannot write magic, res=%d.", res);
return res;
}
return pending_producer_parcelable_.writeToParcel(parcel);
}
IBinder* BufferHubProducer::onAsBinder() {
ALOGE("BufferHubProducer::onAsBinder: BufferHubProducer should never be used as an Binder "
"object.");
return nullptr;
}
} // namespace android