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author | bunnei <bunneidev@gmail.com> | 2021-11-12 04:12:36 +0100 |
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committer | bunnei <bunneidev@gmail.com> | 2022-03-25 02:13:33 +0100 |
commit | 56284bff6c312da130eb0f2d0cda80cd29c82046 (patch) | |
tree | 555305467b7a0ae49ab23b2d33b016284a143daa /src/core/hle/service/nvflinger | |
parent | hle: nvflinger: Add implementation for BufferQueueCore class. (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/core/hle/service/nvflinger/buffer_queue_producer.cpp | 936 | ||||
-rw-r--r-- | src/core/hle/service/nvflinger/buffer_queue_producer.h | 83 |
2 files changed, 1019 insertions, 0 deletions
diff --git a/src/core/hle/service/nvflinger/buffer_queue_producer.cpp b/src/core/hle/service/nvflinger/buffer_queue_producer.cpp new file mode 100644 index 000000000..d48e96b14 --- /dev/null +++ b/src/core/hle/service/nvflinger/buffer_queue_producer.cpp @@ -0,0 +1,936 @@ +// SPDX-License-Identifier: GPL-3.0-or-later +// Copyright 2021 yuzu Emulator Project +// Copyright 2014 The Android Open Source Project +// Parts of this implementation were base on: +// https://cs.android.com/android/platform/superproject/+/android-5.1.1_r38:frameworks/native/libs/gui/BufferQueueProducer.cpp + +#include "common/assert.h" +#include "common/logging/log.h" +#include "common/settings.h" +#include "core/core.h" +#include "core/hle/kernel/hle_ipc.h" +#include "core/hle/kernel/k_event.h" +#include "core/hle/kernel/k_readable_event.h" +#include "core/hle/kernel/k_writable_event.h" +#include "core/hle/kernel/kernel.h" +#include "core/hle/service/kernel_helpers.h" +#include "core/hle/service/nvdrv/nvdrv.h" +#include "core/hle/service/nvflinger/buffer_queue_core.h" +#include "core/hle/service/nvflinger/buffer_queue_producer.h" +#include "core/hle/service/nvflinger/consumer_listener.h" +#include "core/hle/service/nvflinger/parcel.h" +#include "core/hle/service/nvflinger/ui/graphic_buffer.h" +#include "core/hle/service/nvflinger/window.h" +#include "core/hle/service/vi/vi.h" + +namespace android { + +BufferQueueProducer::BufferQueueProducer(Service::KernelHelpers::ServiceContext& service_context_, + std::shared_ptr<BufferQueueCore> buffer_queue_core_) + : service_context{service_context_}, core{std::move(buffer_queue_core_)}, slots(core->slots) { + buffer_wait_event = service_context.CreateEvent("BufferQueue:WaitEvent"); +} + +BufferQueueProducer::~BufferQueueProducer() { + service_context.CloseEvent(buffer_wait_event); +} + +Status BufferQueueProducer::RequestBuffer(s32 slot, std::shared_ptr<GraphicBuffer>* buf) { + LOG_DEBUG(Service_NVFlinger, "slot {}", slot); + + BufferQueueCore::AutoLock lock(core); + + if (core->is_abandoned) { + LOG_ERROR(Service_NVFlinger, "BufferQueue has been abandoned"); + return Status::NoInit; + } + if (slot < 0 || slot >= BufferQueueDefs::NUM_BUFFER_SLOTS) { + LOG_ERROR(Service_NVFlinger, "slot index {} out of range [0, {})", slot, + BufferQueueDefs::NUM_BUFFER_SLOTS); + return Status::BadValue; + } else if (slots[slot].buffer_state != BufferState::Dequeued) { + LOG_ERROR(Service_NVFlinger, "slot {} is not owned by the producer (state = {})", slot, + slots[slot].buffer_state); + return Status::BadValue; + } + + slots[slot].request_buffer_called = true; + *buf = slots[slot].graphic_buffer; + + return Status::NoError; +} + +Status BufferQueueProducer::SetBufferCount(s32 buffer_count) { + LOG_DEBUG(Service_NVFlinger, "count = {}", buffer_count); + std::shared_ptr<IConsumerListener> listener; + + { + BufferQueueCore::AutoLock lock(core); + core->WaitWhileAllocatingLocked(); + if (core->is_abandoned) { + LOG_ERROR(Service_NVFlinger, "BufferQueue has been abandoned"); + return Status::NoInit; + } + + if (buffer_count > BufferQueueDefs::NUM_BUFFER_SLOTS) { + LOG_ERROR(Service_NVFlinger, "buffer_count {} too large (max {})", buffer_count, + BufferQueueDefs::NUM_BUFFER_SLOTS); + return Status::BadValue; + } + + // There must be no dequeued buffers when changing the buffer count. + for (s32 s{}; s < BufferQueueDefs::NUM_BUFFER_SLOTS; ++s) { + if (slots[s].buffer_state == BufferState::Dequeued) { + LOG_ERROR(Service_NVFlinger, "buffer owned by producer"); + return Status::BadValue; + } + } + + if (buffer_count == 0) { + core->override_max_buffer_count = 0; + core->SignalDequeueCondition(); + return Status::NoError; + } + + const s32 min_buffer_slots = core->GetMinMaxBufferCountLocked(false); + if (buffer_count < min_buffer_slots) { + LOG_ERROR(Service_NVFlinger, "requested buffer count {} is less than minimum {}", + buffer_count, min_buffer_slots); + return Status::BadValue; + } + + // Here we are guaranteed that the producer doesn't have any dequeued buffers and will + // release all of its buffer references. + if (core->GetPreallocatedBufferCountLocked() <= 0) { + core->FreeAllBuffersLocked(); + } + + core->override_max_buffer_count = buffer_count; + core->SignalDequeueCondition(); + buffer_wait_event->GetWritableEvent().Signal(); + listener = core->consumer_listener; + } + + // Call back without lock held + if (listener != nullptr) { + listener->OnBuffersReleased(); + } + + return Status::NoError; +} + +Status BufferQueueProducer::WaitForFreeSlotThenRelock(bool async, s32* found, + Status* returnFlags) const { + bool try_again = true; + + while (try_again) { + if (core->is_abandoned) { + LOG_ERROR(Service_NVFlinger, "BufferQueue has been abandoned"); + return Status::NoInit; + } + + const s32 max_buffer_count = core->GetMaxBufferCountLocked(async); + if (async && core->override_max_buffer_count) { + if (core->override_max_buffer_count < max_buffer_count) { + LOG_ERROR(Service_NVFlinger, "async mode is invalid with buffer count override"); + return Status::BadValue; + } + } + + // Free up any buffers that are in slots beyond the max buffer count + for (s32 s = max_buffer_count; s < BufferQueueDefs::NUM_BUFFER_SLOTS; ++s) { + ASSERT(slots[s].buffer_state == BufferState::Free); + if (slots[s].graphic_buffer != nullptr) { + core->FreeBufferLocked(s); + *returnFlags |= Status::ReleaseAllBuffers; + } + } + + s32 dequeued_count{}; + s32 acquired_count{}; + for (s32 s{}; s < max_buffer_count; ++s) { + switch (slots[s].buffer_state) { + case BufferState::Dequeued: + ++dequeued_count; + break; + case BufferState::Acquired: + ++acquired_count; + break; + default: + break; + } + } + + // Producers are not allowed to dequeue more than one buffer if they did not set a buffer + // count + if (!core->override_max_buffer_count && dequeued_count) { + LOG_ERROR(Service_NVFlinger, + "can't dequeue multiple buffers without setting the buffer count"); + return Status::InvalidOperation; + } + + // See whether a buffer has been queued since the last SetBufferCount so we know whether to + // perform the min undequeued buffers check below + if (core->buffer_has_been_queued) { + // Make sure the producer is not trying to dequeue more buffers than allowed + const s32 new_undequeued_count = max_buffer_count - (dequeued_count + 1); + const s32 min_undequeued_count = core->GetMinUndequeuedBufferCountLocked(async); + if (new_undequeued_count < min_undequeued_count) { + LOG_ERROR(Service_NVFlinger, + "min undequeued buffer count({}) exceeded (dequeued={} undequeued={})", + min_undequeued_count, dequeued_count, new_undequeued_count); + return Status::InvalidOperation; + } + } + + *found = BufferQueueCore::INVALID_BUFFER_SLOT; + + // If we disconnect and reconnect quickly, we can be in a state where our slots are empty + // but we have many buffers in the queue. This can cause us to run out of memory if we + // outrun the consumer. Wait here if it looks like we have too many buffers queued up. + const bool too_many_buffers = core->queue.size() > static_cast<size_t>(max_buffer_count); + if (too_many_buffers) { + LOG_ERROR(Service_NVFlinger, "queue size is {}, waiting", core->queue.size()); + } else { + if (!core->free_buffers.empty()) { + auto slot = core->free_buffers.begin(); + *found = *slot; + core->free_buffers.erase(slot); + } else if (core->allow_allocation && !core->free_slots.empty()) { + auto slot = core->free_slots.begin(); + // Only return free slots up to the max buffer count + if (*slot < max_buffer_count) { + *found = *slot; + core->free_slots.erase(slot); + } + } + } + + // If no buffer is found, or if the queue has too many buffers outstanding, wait for a + // buffer to be acquired or released, or for the max buffer count to change. + try_again = (*found == BufferQueueCore::INVALID_BUFFER_SLOT) || too_many_buffers; + if (try_again) { + // Return an error if we're in non-blocking mode (producer and consumer are controlled + // by the application). + if (core->dequeue_buffer_cannot_block && + (acquired_count <= core->max_acquired_buffer_count)) { + return Status::WouldBlock; + } + + if (!core->WaitForDequeueCondition()) { + // We are no longer running + return Status::NoError; + } + } + } + + return Status::NoError; +} + +Status BufferQueueProducer::DequeueBuffer(s32* out_slot, Fence* out_fence, bool async, u32 width, + u32 height, PixelFormat format, u32 usage) { + { BufferQueueCore::AutoLock lock(core); } + + LOG_DEBUG(Service_NVFlinger, "async={} w={} h={} format={}, usage={}", async ? "true" : "false", + width, height, format, usage); + + if ((width && !height) || (!width && height)) { + LOG_ERROR(Service_NVFlinger, "invalid size: w={} h={}", width, height); + return Status::BadValue; + } + + Status return_flags = Status::NoError; + bool attached_by_consumer = false; + { + BufferQueueCore::AutoLock lock(core); + core->WaitWhileAllocatingLocked(); + if (format == PixelFormat::NoFormat) { + format = core->default_buffer_format; + } + + // Enable the usage bits the consumer requested + usage |= core->consumer_usage_bit; + const bool use_default_size = !width && !height; + if (use_default_size) { + width = core->default_width; + height = core->default_height; + } + + s32 found = BufferItem::INVALID_BUFFER_SLOT; + while (found == BufferItem::INVALID_BUFFER_SLOT) { + Status status = WaitForFreeSlotThenRelock(async, &found, &return_flags); + if (status != Status::NoError) { + return status; + } + + // This should not happen + if (found == BufferQueueCore::INVALID_BUFFER_SLOT) { + LOG_DEBUG(Service_NVFlinger, "no available buffer slots"); + return Status::Busy; + } + + const std::shared_ptr<GraphicBuffer>& buffer(slots[found].graphic_buffer); + + // If we are not allowed to allocate new buffers, WaitForFreeSlotThenRelock must have + // returned a slot containing a buffer. If this buffer would require reallocation to + // meet the requested attributes, we free it and attempt to get another one. + if (!core->allow_allocation) { + if (buffer->NeedsReallocation(width, height, format, usage)) { + core->FreeBufferLocked(found); + found = BufferItem::INVALID_BUFFER_SLOT; + continue; + } + } + } + + *out_slot = found; + attached_by_consumer = slots[found].attached_by_consumer; + slots[found].buffer_state = BufferState::Dequeued; + + const std::shared_ptr<GraphicBuffer>& buffer(slots[found].graphic_buffer); + + if ((buffer == nullptr) || buffer->NeedsReallocation(width, height, format, usage)) { + slots[found].acquire_called = false; + slots[found].graphic_buffer = nullptr; + slots[found].request_buffer_called = false; + slots[found].fence = Fence::NoFence(); + core->buffer_age = 0; + return_flags |= Status::BufferNeedsReallocation; + } else { + // We add 1 because that will be the frame number when this buffer + // is queued + core->buffer_age = core->frame_counter + 1 - slots[found].frame_number; + } + + LOG_DEBUG(Service_NVFlinger, "setting buffer age to {}", core->buffer_age); + + *out_fence = slots[found].fence; + + slots[found].fence = Fence::NoFence(); + } + + if ((return_flags & Status::BufferNeedsReallocation) != Status::None) { + LOG_DEBUG(Service_NVFlinger, "allocating a new buffer for slot {}", *out_slot); + + auto graphic_buffer = std::make_shared<GraphicBuffer>(width, height, format, usage); + if (graphic_buffer == nullptr) { + LOG_ERROR(Service_NVFlinger, "creating GraphicBuffer failed"); + return Status::NoMemory; + } + + { + BufferQueueCore::AutoLock lock(core); + if (core->is_abandoned) { + LOG_ERROR(Service_NVFlinger, "BufferQueue has been abandoned"); + return Status::NoInit; + } + + slots[*out_slot].graphic_buffer = graphic_buffer; + } + } + + if (attached_by_consumer) { + return_flags |= Status::BufferNeedsReallocation; + } + + LOG_DEBUG(Service_NVFlinger, "returning slot={} frame={}, flags={}", *out_slot, + slots[*out_slot].frame_number, return_flags); + return return_flags; +} + +Status BufferQueueProducer::DetachBuffer(s32 slot) { + LOG_DEBUG(Service_NVFlinger, "slot {}", slot); + + BufferQueueCore::AutoLock lock(core); + if (core->is_abandoned) { + LOG_ERROR(Service_NVFlinger, "BufferQueue has been abandoned"); + return Status::NoInit; + } + + if (slot < 0 || slot >= BufferQueueDefs::NUM_BUFFER_SLOTS) { + LOG_ERROR(Service_NVFlinger, "slot {} out of range [0, {})", slot, + BufferQueueDefs::NUM_BUFFER_SLOTS); + return Status::BadValue; + } else if (slots[slot].buffer_state != BufferState::Dequeued) { + LOG_ERROR(Service_NVFlinger, "slot {} is not owned by the producer (state = {})", slot, + slots[slot].buffer_state); + return Status::BadValue; + } else if (!slots[slot].request_buffer_called) { + LOG_ERROR(Service_NVFlinger, "buffer in slot {} has not been requested", slot); + return Status::BadValue; + } + + core->FreeBufferLocked(slot); + core->SignalDequeueCondition(); + + return Status::NoError; +} + +Status BufferQueueProducer::DetachNextBuffer(std::shared_ptr<GraphicBuffer>* out_buffer, + Fence* out_fence) { + if (out_buffer == nullptr) { + LOG_ERROR(Service_NVFlinger, "out_buffer must not be nullptr"); + return Status::BadValue; + } else if (out_fence == nullptr) { + LOG_ERROR(Service_NVFlinger, "out_fence must not be nullptr"); + return Status::BadValue; + } + + BufferQueueCore::AutoLock lock(core); + + core->WaitWhileAllocatingLocked(); + + if (core->is_abandoned) { + LOG_ERROR(Service_NVFlinger, "BufferQueue has been abandoned"); + return Status::NoInit; + } + if (core->free_buffers.empty()) { + return Status::NoMemory; + } + + const s32 found = core->free_buffers.front(); + core->free_buffers.remove(found); + + LOG_DEBUG(Service_NVFlinger, "Detached slot {}", found); + + *out_buffer = slots[found].graphic_buffer; + *out_fence = slots[found].fence; + + core->FreeBufferLocked(found); + + return Status::NoError; +} + +Status BufferQueueProducer::AttachBuffer(s32* out_slot, + const std::shared_ptr<GraphicBuffer>& buffer) { + if (out_slot == nullptr) { + LOG_ERROR(Service_NVFlinger, "out_slot must not be nullptr"); + return Status::BadValue; + } else if (buffer == nullptr) { + LOG_ERROR(Service_NVFlinger, "Cannot attach nullptr buffer"); + return Status::BadValue; + } + + BufferQueueCore::AutoLock lock(core); + core->WaitWhileAllocatingLocked(); + + Status return_flags = Status::NoError; + s32 found{}; + + const auto status = WaitForFreeSlotThenRelock(false, &found, &return_flags); + if (status != Status::NoError) { + return status; + } + + if (found == BufferQueueCore::INVALID_BUFFER_SLOT) { + LOG_ERROR(Service_NVFlinger, "No available buffer slots"); + return Status::Busy; + } + + *out_slot = found; + + LOG_DEBUG(Service_NVFlinger, "Returning slot {} flags={}", *out_slot, return_flags); + + slots[*out_slot].graphic_buffer = buffer; + slots[*out_slot].buffer_state = BufferState::Dequeued; + slots[*out_slot].fence = Fence::NoFence(); + slots[*out_slot].request_buffer_called = true; + + return return_flags; +} + +Status BufferQueueProducer::QueueBuffer(s32 slot, const QueueBufferInput& input, + QueueBufferOutput* output) { + s64 timestamp{}; + bool is_auto_timestamp{}; + Rect crop; + NativeWindowScalingMode scaling_mode{}; + NativeWindowTransform transform; + u32 sticky_transform_{}; + bool async{}; + s32 swap_interval{}; + Fence fence{}; + + input.Deflate(×tamp, &is_auto_timestamp, &crop, &scaling_mode, &transform, + &sticky_transform_, &async, &swap_interval, &fence); + + switch (scaling_mode) { + case NativeWindowScalingMode::Freeze: + case NativeWindowScalingMode::ScaleToWindow: + case NativeWindowScalingMode::ScaleCrop: + case NativeWindowScalingMode::NoScaleCrop: + break; + default: + LOG_ERROR(Service_NVFlinger, "unknown scaling mode {}", scaling_mode); + return Status::BadValue; + } + + std::shared_ptr<IConsumerListener> frameAvailableListener; + std::shared_ptr<IConsumerListener> frameReplacedListener; + s32 callback_ticket{}; + BufferItem item; + + { + BufferQueueCore::AutoLock lock(core); + + if (core->is_abandoned) { + LOG_ERROR(Service_NVFlinger, "BufferQueue has been abandoned"); + return Status::NoInit; + } + + const s32 max_buffer_count = core->GetMaxBufferCountLocked(async); + if (async && core->override_max_buffer_count) { + if (core->override_max_buffer_count < max_buffer_count) { + LOG_ERROR(Service_NVFlinger, "async mode is invalid with " + "buffer count override"); + return Status::BadValue; + } + } + + if (slot < 0 || slot >= max_buffer_count) { + LOG_ERROR(Service_NVFlinger, "slot index {} out of range [0, {})", slot, + max_buffer_count); + return Status::BadValue; + } else if (slots[slot].buffer_state != BufferState::Dequeued) { + LOG_ERROR(Service_NVFlinger, + "slot {} is not owned by the producer " + "(state = {})", + slot, slots[slot].buffer_state); + return Status::BadValue; + } else if (!slots[slot].request_buffer_called) { + LOG_ERROR(Service_NVFlinger, + "slot {} was queued without requesting " + "a buffer", + slot); + return Status::BadValue; + } + + LOG_DEBUG(Service_NVFlinger, + "slot={} frame={} time={} crop=[{},{},{},{}] transform={} scale={}", slot, + core->frame_counter + 1, timestamp, crop.Left(), crop.Top(), crop.Right(), + crop.Bottom(), transform, scaling_mode); + + const std::shared_ptr<GraphicBuffer>& graphic_buffer(slots[slot].graphic_buffer); + Rect buffer_rect(graphic_buffer->Width(), graphic_buffer->Height()); + Rect cropped_rect; + crop.Intersect(buffer_rect, &cropped_rect); + + if (cropped_rect != crop) { + LOG_ERROR(Service_NVFlinger, "crop rect is not contained within the buffer in slot {}", + slot); + return Status::BadValue; + } + + slots[slot].fence = fence; + slots[slot].buffer_state = BufferState::Queued; + ++core->frame_counter; + slots[slot].frame_number = core->frame_counter; + + item.acquire_called = slots[slot].acquire_called; + item.graphic_buffer = slots[slot].graphic_buffer; + item.crop = crop; + item.transform = transform & ~NativeWindowTransform::InverseDisplay; + item.transform_to_display_inverse = + (transform & NativeWindowTransform::InverseDisplay) != NativeWindowTransform::None; + item.scaling_mode = static_cast<u32>(scaling_mode); + item.timestamp = timestamp; + item.is_auto_timestamp = is_auto_timestamp; + item.frame_number = core->frame_counter; + item.slot = slot; + item.fence = fence; + item.is_droppable = core->dequeue_buffer_cannot_block || async; + item.swap_interval = swap_interval; + sticky_transform = sticky_transform_; + + if (core->queue.empty()) { + // When the queue is empty, we can simply queue this buffer + core->queue.push_back(item); + frameAvailableListener = core->consumer_listener; + } else { + // When the queue is not empty, we need to look at the front buffer + // state to see if we need to replace it + auto front(core->queue.begin()); + + if (front->is_droppable) { + // If the front queued buffer is still being tracked, we first + // mark it as freed + if (core->StillTracking(&*front)) { + slots[front->slot].buffer_state = BufferState::Free; + core->free_buffers.push_front(front->slot); + } + // Overwrite the droppable buffer with the incoming one + *front = item; + frameReplacedListener = core->consumer_listener; + } else { + core->queue.push_back(item); + frameAvailableListener = core->consumer_listener; + } + } + + core->buffer_has_been_queued = true; + core->SignalDequeueCondition(); + output->Inflate(core->default_width, core->default_height, core->transform_hint, + static_cast<u32>(core->queue.size())); + + // Take a ticket for the callback functions + callback_ticket = next_callback_ticket++; + } + + // Don't send the GraphicBuffer through the callback, and don't send the slot number, since the + // consumer shouldn't need it + item.graphic_buffer.reset(); + item.slot = BufferItem::INVALID_BUFFER_SLOT; + + // Call back without the main BufferQueue lock held, but with the callback lock held so we can + // ensure that callbacks occur in order + { + std::unique_lock lock(callback_mutex); + while (callback_ticket != current_callback_ticket) { + std::unique_lock<std::mutex> lk(callback_mutex); + callback_condition.wait(lk); + } + + if (frameAvailableListener != nullptr) { + frameAvailableListener->OnFrameAvailable(item); + } else if (frameReplacedListener != nullptr) { + frameReplacedListener->OnFrameReplaced(item); + } + + ++current_callback_ticket; + callback_condition.notify_all(); + } + + return Status::NoError; +} + +void BufferQueueProducer::CancelBuffer(s32 slot, const Fence& fence) { + LOG_DEBUG(Service_NVFlinger, "slot {}", slot); + + BufferQueueCore::AutoLock lock(core); + + if (core->is_abandoned) { + LOG_ERROR(Service_NVFlinger, "BufferQueue has been abandoned"); + return; + } + + if (slot < 0 || slot >= BufferQueueDefs::NUM_BUFFER_SLOTS) { + LOG_ERROR(Service_NVFlinger, "slot index {} out of range [0, {})", slot, + BufferQueueDefs::NUM_BUFFER_SLOTS); + return; + } else if (slots[slot].buffer_state != BufferState::Dequeued) { + LOG_ERROR(Service_NVFlinger, "slot {} is not owned by the producer (state = {})", slot, + slots[slot].buffer_state); + return; + } + + core->free_buffers.push_front(slot); + slots[slot].buffer_state = BufferState::Free; + slots[slot].fence = fence; + + core->SignalDequeueCondition(); + buffer_wait_event->GetWritableEvent().Signal(); +} + +Status BufferQueueProducer::Query(NativeWindow what, s32* out_value) { + BufferQueueCore::AutoLock lock(core); + + if (out_value == nullptr) { + LOG_ERROR(Service_NVFlinger, "outValue was nullptr"); + return Status::BadValue; + } + + if (core->is_abandoned) { + LOG_ERROR(Service_NVFlinger, "BufferQueue has been abandoned"); + return Status::NoInit; + } + + s32 value{}; + switch (what) { + case NativeWindow::Width: + value = static_cast<s32>(core->default_width); + break; + case NativeWindow::Height: + value = static_cast<s32>(core->default_height); + break; + case NativeWindow::Format: + value = static_cast<s32>(core->default_buffer_format); + break; + case NativeWindow::MinUndequeedBuffers: + value = core->GetMinUndequeuedBufferCountLocked(false); + break; + case NativeWindow::StickyTransform: + value = static_cast<s32>(sticky_transform); + break; + case NativeWindow::ConsumerRunningBehind: + value = (core->queue.size() > 1); + break; + case NativeWindow::ConsumerUsageBits: + value = static_cast<s32>(core->consumer_usage_bit); + break; + case NativeWindow::BufferAge: + if (core->buffer_age > INT32_MAX) { + value = 0; + } else { + value = static_cast<s32>(core->buffer_age); + } + break; + default: + UNREACHABLE(); + return Status::BadValue; + } + + LOG_DEBUG(Service_NVFlinger, "what = {}, value = {}", what, value); + + *out_value = value; + + return Status::NoError; +} + +Status BufferQueueProducer::Connect(const std::shared_ptr<IProducerListener>& listener, + NativeWindowApi api, bool producer_controlled_by_app, + QueueBufferOutput* output) { + BufferQueueCore::AutoLock lock(core); + + LOG_DEBUG(Service_NVFlinger, "api = {} producer_controlled_by_app = {}", api, + producer_controlled_by_app); + + if (core->is_abandoned) { + LOG_ERROR(Service_NVFlinger, "BufferQueue has been abandoned"); + return Status::NoInit; + } + + if (core->consumer_listener == nullptr) { + LOG_ERROR(Service_NVFlinger, "BufferQueue has no consumer"); + return Status::NoInit; + } + + if (output == nullptr) { + LOG_ERROR(Service_NVFlinger, "output was nullptr"); + return Status::BadValue; + } + + if (core->connected_api != NativeWindowApi::NoConnectedApi) { + LOG_ERROR(Service_NVFlinger, "already connected (cur = {} req = {})", core->connected_api, + api); + return Status::BadValue; + } + + Status status = Status::NoError; + switch (api) { + case NativeWindowApi::Egl: + case NativeWindowApi::Cpu: + case NativeWindowApi::Media: + case NativeWindowApi::Camera: + core->connected_api = api; + output->Inflate(core->default_width, core->default_height, core->transform_hint, + static_cast<u32>(core->queue.size())); + core->connected_producer_listener = listener; + break; + default: + LOG_ERROR(Service_NVFlinger, "unknown api = {}", api); + status = Status::BadValue; + break; + } + + core->buffer_has_been_queued = false; + core->dequeue_buffer_cannot_block = + core->consumer_controlled_by_app && producer_controlled_by_app; + core->allow_allocation = true; + + return status; +} + +Status BufferQueueProducer::Disconnect(NativeWindowApi api) { + LOG_DEBUG(Service_NVFlinger, "api = {}", api); + + Status status = Status::NoError; + std::shared_ptr<IConsumerListener> listener; + + { + BufferQueueCore::AutoLock lock(core); + + core->WaitWhileAllocatingLocked(); + + if (core->is_abandoned) { + // Disconnecting after the surface has been abandoned is a no-op. + return Status::NoError; + } + + switch (api) { + case NativeWindowApi::Egl: + case NativeWindowApi::Cpu: + case NativeWindowApi::Media: + case NativeWindowApi::Camera: + if (core->connected_api == api) { + core->FreeAllBuffersLocked(); + core->connected_producer_listener = nullptr; + core->connected_api = NativeWindowApi::NoConnectedApi; + core->SignalDequeueCondition(); + buffer_wait_event->GetWritableEvent().Signal(); + listener = core->consumer_listener; + } else if (core->connected_api != NativeWindowApi::NoConnectedApi) { + LOG_ERROR(Service_NVFlinger, "still connected to another api (cur = {} req = {})", + core->connected_api, api); + status = Status::BadValue; + } + break; + default: + LOG_ERROR(Service_NVFlinger, "unknown api = {}", api); + status = Status::BadValue; + break; + } + } + + // Call back without lock held + if (listener != nullptr) { + listener->OnBuffersReleased(); + } + + return status; +} + +Status BufferQueueProducer::SetPreallocatedBuffer(s32 slot, + const std::shared_ptr<GraphicBuffer>& buffer) { + LOG_DEBUG(Service_NVFlinger, "slot {}", slot); + + UNIMPLEMENTED_IF_MSG(!buffer, "buffer must be valid!"); + + if (slot < 0 || slot >= BufferQueueDefs::NUM_BUFFER_SLOTS) { + return Status::BadValue; + } + + BufferQueueCore::AutoLock lock(core); + + slots[slot] = {}; + slots[slot].is_preallocated = true; + slots[slot].graphic_buffer = buffer; + + core->override_max_buffer_count = core->GetPreallocatedBufferCountLocked(); + core->default_width = buffer->Width(); + core->default_height = buffer->Height(); + core->default_buffer_format = buffer->Format(); + + core->SignalDequeueCondition(); + buffer_wait_event->GetWritableEvent().Signal(); + + return Status::NoError; +} + +void BufferQueueProducer::Transact(Kernel::HLERequestContext& ctx, TransactionId code, u32 flags) { + Status status{Status::NoError}; + Parcel parcel_in{ctx.ReadBuffer()}; + Parcel parcel_out{}; + + switch (code) { + case TransactionId::Connect: { + const auto enable_listener = parcel_in.Read<bool>(); + const auto api = parcel_in.Read<NativeWindowApi>(); + const auto producer_controlled_by_app = parcel_in.Read<bool>(); + + UNIMPLEMENTED_IF_MSG(enable_listener, "Listener is unimplemented!"); + + std::shared_ptr<IProducerListener> listener; + QueueBufferOutput output{}; + + status = Connect(listener, api, producer_controlled_by_app, &output); + + parcel_out.Write(output); + break; + } + case TransactionId::SetPreallocatedBuffer: { + const auto slot = parcel_in.Read<s32>(); + const auto buffer = parcel_in.ReadObject<GraphicBuffer>(); + + status = SetPreallocatedBuffer(slot, buffer); + break; + } + case TransactionId::DequeueBuffer: { + const auto is_async = parcel_in.Read<bool>(); + const auto width = parcel_in.Read<u32>(); + const auto height = parcel_in.Read<u32>(); + const auto pixel_format = parcel_in.Read<PixelFormat>(); + const auto usage = parcel_in.Read<u32>(); + + s32 slot{}; + Fence fence{}; + + status = DequeueBuffer(&slot, &fence, is_async, width, height, pixel_format, usage); + + parcel_out.Write(slot); + parcel_out.WriteObject(&fence); + break; + } + case TransactionId::RequestBuffer: { + const auto slot = parcel_in.Read<s32>(); + + std::shared_ptr<GraphicBuffer> buf; + + status = RequestBuffer(slot, &buf); + + parcel_out.WriteObject(buf); + break; + } + case TransactionId::QueueBuffer: { + const auto slot = parcel_in.Read<s32>(); + + QueueBufferInput input{parcel_in}; + QueueBufferOutput output; + + status = QueueBuffer(slot, input, &output); + + parcel_out.Write(output); + break; + } + case TransactionId::Query: { + const auto what = parcel_in.Read<NativeWindow>(); + + s32 value{}; + + status = Query(what, &value); + + parcel_out.Write(value); + break; + } + case TransactionId::CancelBuffer: { + const auto slot = parcel_in.Read<s32>(); + const auto fence = parcel_in.ReadFlattened<Fence>(); + + CancelBuffer(slot, fence); + break; + } + case TransactionId::Disconnect: { + const auto api = parcel_in.Read<NativeWindowApi>(); + + status = Disconnect(api); + break; + } + case TransactionId::DetachBuffer: { + const auto slot = parcel_in.Read<s32>(); + + status = DetachBuffer(slot); + break; + } + case TransactionId::SetBufferCount: { + const auto buffer_count = parcel_in.Read<s32>(); + + status = SetBufferCount(buffer_count); + break; + } + case TransactionId::GetBufferHistory: { + LOG_WARNING(Service_NVFlinger, "(STUBBED) called, transaction=GetBufferHistory"); + break; + } + default: + ASSERT_MSG(false, "Unimplemented"); + } + + parcel_out.Write(status); + + ctx.WriteBuffer(parcel_out.Serialize()); +} + +Kernel::KReadableEvent& BufferQueueProducer::GetNativeHandle() { + return buffer_wait_event->GetReadableEvent(); +} + +} // namespace android diff --git a/src/core/hle/service/nvflinger/buffer_queue_producer.h b/src/core/hle/service/nvflinger/buffer_queue_producer.h new file mode 100644 index 000000000..fcb71a794 --- /dev/null +++ b/src/core/hle/service/nvflinger/buffer_queue_producer.h @@ -0,0 +1,83 @@ +// SPDX-License-Identifier: GPL-3.0-or-later +// Copyright 2021 yuzu Emulator Project +// Copyright 2014 The Android Open Source Project +// Parts of this implementation were base on: +// https://cs.android.com/android/platform/superproject/+/android-5.1.1_r38:frameworks/native/include/gui/BufferQueueProducer.h + +#pragma once + +#include <condition_variable> +#include <memory> +#include <mutex> + +#include "common/common_funcs.h" +#include "core/hle/service/nvdrv/nvdata.h" +#include "core/hle/service/nvflinger/binder.h" +#include "core/hle/service/nvflinger/buffer_queue_defs.h" +#include "core/hle/service/nvflinger/buffer_slot.h" +#include "core/hle/service/nvflinger/graphic_buffer_producer.h" +#include "core/hle/service/nvflinger/pixel_format.h" +#include "core/hle/service/nvflinger/status.h" +#include "core/hle/service/nvflinger/window.h" + +namespace Kernel { +class KernelCore; +class KEvent; +class KReadableEvent; +class KWritableEvent; +} // namespace Kernel + +namespace Service::KernelHelpers { +class ServiceContext; +} // namespace Service::KernelHelpers + +namespace android { + +class BufferQueueCore; +class IProducerListener; + +class BufferQueueProducer final : public IBinder { +public: + explicit BufferQueueProducer(Service::KernelHelpers::ServiceContext& service_context_, + std::shared_ptr<BufferQueueCore> buffer_queue_core_); + ~BufferQueueProducer(); + + void Transact(Kernel::HLERequestContext& ctx, android::TransactionId code, u32 flags) override; + + Kernel::KReadableEvent& GetNativeHandle() override; + +public: + Status RequestBuffer(s32 slot, std::shared_ptr<GraphicBuffer>* buf); + Status SetBufferCount(s32 buffer_count); + Status DequeueBuffer(s32* out_slot, android::Fence* out_fence, bool async, u32 width, + u32 height, PixelFormat format, u32 usage); + Status DetachBuffer(s32 slot); + Status DetachNextBuffer(std::shared_ptr<GraphicBuffer>* out_buffer, Fence* out_fence); + Status AttachBuffer(s32* outSlot, const std::shared_ptr<GraphicBuffer>& buffer); + Status QueueBuffer(s32 slot, const QueueBufferInput& input, QueueBufferOutput* output); + void CancelBuffer(s32 slot, const Fence& fence); + Status Query(NativeWindow what, s32* out_value); + Status Connect(const std::shared_ptr<IProducerListener>& listener, NativeWindowApi api, + bool producer_controlled_by_app, QueueBufferOutput* output); + + Status Disconnect(NativeWindowApi api); + Status SetPreallocatedBuffer(s32 slot, const std::shared_ptr<GraphicBuffer>& buffer); + +private: + BufferQueueProducer(const BufferQueueProducer&) = delete; + + Status WaitForFreeSlotThenRelock(bool async, s32* found, Status* returnFlags) const; + + Kernel::KEvent* buffer_wait_event{}; + Service::KernelHelpers::ServiceContext& service_context; + + std::shared_ptr<BufferQueueCore> core; + BufferQueueDefs::SlotsType& slots; + u32 sticky_transform{}; + std::mutex callback_mutex; + s32 next_callback_ticket{}; + s32 current_callback_ticket{}; + std::condition_variable callback_condition; +}; + +} // namespace android |