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hle: nvflinger: Add implementation for BufferQueueCore class.
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@ -543,6 +543,8 @@ add_library(core STATIC
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hle/service/nvflinger/buffer_item_consumer.h
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hle/service/nvflinger/buffer_queue_consumer.cpp
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hle/service/nvflinger/buffer_queue_consumer.h
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hle/service/nvflinger/buffer_queue_core.cpp
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hle/service/nvflinger/buffer_queue_core.h
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hle/service/nvflinger/buffer_queue_defs.h
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hle/service/nvflinger/buffer_slot.h
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hle/service/nvflinger/buffer_transform_flags.h
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135
src/core/hle/service/nvflinger/buffer_queue_core.cpp
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135
src/core/hle/service/nvflinger/buffer_queue_core.cpp
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// SPDX-License-Identifier: GPL-3.0-or-later
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// Copyright 2021 yuzu Emulator Project
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// Copyright 2014 The Android Open Source Project
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// Parts of this implementation were base on:
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// https://cs.android.com/android/platform/superproject/+/android-5.1.1_r38:frameworks/native/libs/gui/BufferQueueCore.cpp
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#include "common/assert.h"
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#include "core/hle/service/nvflinger/buffer_queue_core.h"
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namespace android {
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BufferQueueCore::BufferQueueCore() : lock{mutex} {
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// This is locked on creation, so unlock.
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lock.unlock();
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for (s32 slot = 0; slot < BufferQueueDefs::NUM_BUFFER_SLOTS; ++slot) {
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free_slots.insert(slot);
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}
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}
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void BufferQueueCore::NotifyShutdown() {
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std::unique_lock<std::mutex> lk(mutex);
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is_shutting_down = true;
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SignalDequeueCondition();
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}
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void BufferQueueCore::SignalDequeueCondition() {
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dequeue_condition.notify_all();
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}
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bool BufferQueueCore::WaitForDequeueCondition() {
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if (is_shutting_down) {
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return false;
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}
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dequeue_condition.wait(lock);
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return true;
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}
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s32 BufferQueueCore::GetMinUndequeuedBufferCountLocked(bool async) const {
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// If DequeueBuffer is allowed to error out, we don't have to add an extra buffer.
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if (!use_async_buffer) {
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return max_acquired_buffer_count;
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}
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if (dequeue_buffer_cannot_block || async) {
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return max_acquired_buffer_count + 1;
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}
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return max_acquired_buffer_count;
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}
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s32 BufferQueueCore::GetMinMaxBufferCountLocked(bool async) const {
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return GetMinUndequeuedBufferCountLocked(async) + 1;
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}
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s32 BufferQueueCore::GetMaxBufferCountLocked(bool async) const {
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const auto min_buffer_count = GetMinMaxBufferCountLocked(async);
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auto max_buffer_count = std::max(default_max_buffer_count, min_buffer_count);
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if (override_max_buffer_count != 0) {
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ASSERT(override_max_buffer_count >= min_buffer_count);
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max_buffer_count = override_max_buffer_count;
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}
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// Any buffers that are dequeued by the producer or sitting in the queue waiting to be consumed
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// need to have their slots preserved.
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for (s32 slot = max_buffer_count; slot < BufferQueueDefs::NUM_BUFFER_SLOTS; ++slot) {
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const auto state = slots[slot].buffer_state;
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if (state == BufferState::Queued || state == BufferState::Dequeued) {
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max_buffer_count = slot + 1;
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}
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}
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return max_buffer_count;
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}
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s32 BufferQueueCore::GetPreallocatedBufferCountLocked() const {
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return static_cast<s32>(std::count_if(slots.begin(), slots.end(),
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[](const auto& slot) { return slot.is_preallocated; }));
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}
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void BufferQueueCore::FreeBufferLocked(s32 slot) {
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LOG_DEBUG(Service_NVFlinger, "slot {}", slot);
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const auto had_buffer = slots[slot].graphic_buffer != nullptr;
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slots[slot].graphic_buffer.reset();
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if (slots[slot].buffer_state == BufferState::Acquired) {
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slots[slot].needs_cleanup_on_release = true;
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}
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if (slots[slot].buffer_state != BufferState::Free) {
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free_slots.insert(slot);
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} else if (had_buffer) {
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// If the slot was FREE, but we had a buffer, we need to move this slot from the free
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// buffers list to the the free slots list.
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free_buffers.remove(slot);
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free_slots.insert(slot);
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}
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slots[slot].buffer_state = BufferState::Free;
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slots[slot].acquire_called = false;
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slots[slot].frame_number = 0;
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slots[slot].fence = Fence::NoFence();
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}
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void BufferQueueCore::FreeAllBuffersLocked() {
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queue.clear();
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buffer_has_been_queued = false;
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for (s32 slot = 0; slot < BufferQueueDefs::NUM_BUFFER_SLOTS; ++slot) {
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FreeBufferLocked(slot);
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}
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}
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bool BufferQueueCore::StillTracking(const BufferItem* item) const {
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const BufferSlot& slot = slots[item->slot];
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return (slot.graphic_buffer != nullptr) && (item->graphic_buffer == slot.graphic_buffer);
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}
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void BufferQueueCore::WaitWhileAllocatingLocked() const {
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while (is_allocating) {
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std::unique_lock<std::mutex> lk(mutex);
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is_allocating_condition.wait(lk);
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}
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}
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} // namespace android
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98
src/core/hle/service/nvflinger/buffer_queue_core.h
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98
src/core/hle/service/nvflinger/buffer_queue_core.h
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@ -0,0 +1,98 @@
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// SPDX-License-Identifier: GPL-3.0-or-later
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// Copyright 2021 yuzu Emulator Project
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// Copyright 2014 The Android Open Source Project
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// Parts of this implementation were base on:
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// https://cs.android.com/android/platform/superproject/+/android-5.1.1_r38:frameworks/native/include/gui/BufferQueueCore.h
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#pragma once
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#include <condition_variable>
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#include <list>
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#include <memory>
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#include <mutex>
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#include <set>
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#include <vector>
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#include "core/hle/service/nvflinger/buffer_item.h"
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#include "core/hle/service/nvflinger/buffer_queue_defs.h"
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#include "core/hle/service/nvflinger/pixel_format.h"
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#include "core/hle/service/nvflinger/status.h"
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#include "core/hle/service/nvflinger/window.h"
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namespace android {
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class IConsumerListener;
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class IProducerListener;
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class BufferQueueCore final {
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friend class BufferQueueProducer;
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friend class BufferQueueConsumer;
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public:
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static constexpr s32 INVALID_BUFFER_SLOT = BufferItem::INVALID_BUFFER_SLOT;
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BufferQueueCore();
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void NotifyShutdown();
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private:
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void SignalDequeueCondition();
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bool WaitForDequeueCondition();
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s32 GetMinUndequeuedBufferCountLocked(bool async) const;
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s32 GetMinMaxBufferCountLocked(bool async) const;
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s32 GetMaxBufferCountLocked(bool async) const;
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s32 GetPreallocatedBufferCountLocked() const;
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void FreeBufferLocked(s32 slot);
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void FreeAllBuffersLocked();
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bool StillTracking(const BufferItem* item) const;
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void WaitWhileAllocatingLocked() const;
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private:
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class AutoLock final {
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public:
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AutoLock(std::shared_ptr<BufferQueueCore>& core_) : core{core_} {
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core->lock.lock();
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}
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~AutoLock() {
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core->lock.unlock();
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}
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private:
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std::shared_ptr<BufferQueueCore>& core;
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};
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private:
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mutable std::mutex mutex;
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mutable std::unique_lock<std::mutex> lock;
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bool is_abandoned{};
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bool consumer_controlled_by_app{};
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std::shared_ptr<IConsumerListener> consumer_listener;
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u32 consumer_usage_bit{};
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NativeWindowApi connected_api{NativeWindowApi::NoConnectedApi};
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std::shared_ptr<IProducerListener> connected_producer_listener;
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BufferQueueDefs::SlotsType slots{};
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std::vector<BufferItem> queue;
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std::set<s32> free_slots;
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std::list<s32> free_buffers;
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s32 override_max_buffer_count{};
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mutable std::condition_variable dequeue_condition;
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const bool use_async_buffer{}; // This is always disabled on HOS
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bool dequeue_buffer_cannot_block{};
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PixelFormat default_buffer_format{PixelFormat::Rgba8888};
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u32 default_width{1};
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u32 default_height{1};
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s32 default_max_buffer_count{2};
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const s32 max_acquired_buffer_count{}; // This is always zero on HOS
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bool buffer_has_been_queued{};
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u64 frame_counter{};
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u32 transform_hint{};
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bool is_allocating{};
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mutable std::condition_variable is_allocating_condition;
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bool allow_allocation{true};
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u64 buffer_age{};
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bool is_shutting_down{};
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};
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} // namespace android
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