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hle: nvflinger: Add implementation for BufferQueueCore class.

This commit is contained in:
bunnei 2021-11-11 18:56:11 -08:00
parent 6e7f687df4
commit bfff7b58fd
3 changed files with 235 additions and 0 deletions

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@ -543,6 +543,8 @@ add_library(core STATIC
hle/service/nvflinger/buffer_item_consumer.h
hle/service/nvflinger/buffer_queue_consumer.cpp
hle/service/nvflinger/buffer_queue_consumer.h
hle/service/nvflinger/buffer_queue_core.cpp
hle/service/nvflinger/buffer_queue_core.h
hle/service/nvflinger/buffer_queue_defs.h
hle/service/nvflinger/buffer_slot.h
hle/service/nvflinger/buffer_transform_flags.h

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@ -0,0 +1,135 @@
// 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/BufferQueueCore.cpp
#include "common/assert.h"
#include "core/hle/service/nvflinger/buffer_queue_core.h"
namespace android {
BufferQueueCore::BufferQueueCore() : lock{mutex} {
// This is locked on creation, so unlock.
lock.unlock();
for (s32 slot = 0; slot < BufferQueueDefs::NUM_BUFFER_SLOTS; ++slot) {
free_slots.insert(slot);
}
}
void BufferQueueCore::NotifyShutdown() {
std::unique_lock<std::mutex> lk(mutex);
is_shutting_down = true;
SignalDequeueCondition();
}
void BufferQueueCore::SignalDequeueCondition() {
dequeue_condition.notify_all();
}
bool BufferQueueCore::WaitForDequeueCondition() {
if (is_shutting_down) {
return false;
}
dequeue_condition.wait(lock);
return true;
}
s32 BufferQueueCore::GetMinUndequeuedBufferCountLocked(bool async) const {
// If DequeueBuffer is allowed to error out, we don't have to add an extra buffer.
if (!use_async_buffer) {
return max_acquired_buffer_count;
}
if (dequeue_buffer_cannot_block || async) {
return max_acquired_buffer_count + 1;
}
return max_acquired_buffer_count;
}
s32 BufferQueueCore::GetMinMaxBufferCountLocked(bool async) const {
return GetMinUndequeuedBufferCountLocked(async) + 1;
}
s32 BufferQueueCore::GetMaxBufferCountLocked(bool async) const {
const auto min_buffer_count = GetMinMaxBufferCountLocked(async);
auto max_buffer_count = std::max(default_max_buffer_count, min_buffer_count);
if (override_max_buffer_count != 0) {
ASSERT(override_max_buffer_count >= min_buffer_count);
max_buffer_count = override_max_buffer_count;
}
// Any buffers that are dequeued by the producer or sitting in the queue waiting to be consumed
// need to have their slots preserved.
for (s32 slot = max_buffer_count; slot < BufferQueueDefs::NUM_BUFFER_SLOTS; ++slot) {
const auto state = slots[slot].buffer_state;
if (state == BufferState::Queued || state == BufferState::Dequeued) {
max_buffer_count = slot + 1;
}
}
return max_buffer_count;
}
s32 BufferQueueCore::GetPreallocatedBufferCountLocked() const {
return static_cast<s32>(std::count_if(slots.begin(), slots.end(),
[](const auto& slot) { return slot.is_preallocated; }));
}
void BufferQueueCore::FreeBufferLocked(s32 slot) {
LOG_DEBUG(Service_NVFlinger, "slot {}", slot);
const auto had_buffer = slots[slot].graphic_buffer != nullptr;
slots[slot].graphic_buffer.reset();
if (slots[slot].buffer_state == BufferState::Acquired) {
slots[slot].needs_cleanup_on_release = true;
}
if (slots[slot].buffer_state != BufferState::Free) {
free_slots.insert(slot);
} else if (had_buffer) {
// If the slot was FREE, but we had a buffer, we need to move this slot from the free
// buffers list to the the free slots list.
free_buffers.remove(slot);
free_slots.insert(slot);
}
slots[slot].buffer_state = BufferState::Free;
slots[slot].acquire_called = false;
slots[slot].frame_number = 0;
slots[slot].fence = Fence::NoFence();
}
void BufferQueueCore::FreeAllBuffersLocked() {
queue.clear();
buffer_has_been_queued = false;
for (s32 slot = 0; slot < BufferQueueDefs::NUM_BUFFER_SLOTS; ++slot) {
FreeBufferLocked(slot);
}
}
bool BufferQueueCore::StillTracking(const BufferItem* item) const {
const BufferSlot& slot = slots[item->slot];
return (slot.graphic_buffer != nullptr) && (item->graphic_buffer == slot.graphic_buffer);
}
void BufferQueueCore::WaitWhileAllocatingLocked() const {
while (is_allocating) {
std::unique_lock<std::mutex> lk(mutex);
is_allocating_condition.wait(lk);
}
}
} // namespace android

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@ -0,0 +1,98 @@
// 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/BufferQueueCore.h
#pragma once
#include <condition_variable>
#include <list>
#include <memory>
#include <mutex>
#include <set>
#include <vector>
#include "core/hle/service/nvflinger/buffer_item.h"
#include "core/hle/service/nvflinger/buffer_queue_defs.h"
#include "core/hle/service/nvflinger/pixel_format.h"
#include "core/hle/service/nvflinger/status.h"
#include "core/hle/service/nvflinger/window.h"
namespace android {
class IConsumerListener;
class IProducerListener;
class BufferQueueCore final {
friend class BufferQueueProducer;
friend class BufferQueueConsumer;
public:
static constexpr s32 INVALID_BUFFER_SLOT = BufferItem::INVALID_BUFFER_SLOT;
BufferQueueCore();
void NotifyShutdown();
private:
void SignalDequeueCondition();
bool WaitForDequeueCondition();
s32 GetMinUndequeuedBufferCountLocked(bool async) const;
s32 GetMinMaxBufferCountLocked(bool async) const;
s32 GetMaxBufferCountLocked(bool async) const;
s32 GetPreallocatedBufferCountLocked() const;
void FreeBufferLocked(s32 slot);
void FreeAllBuffersLocked();
bool StillTracking(const BufferItem* item) const;
void WaitWhileAllocatingLocked() const;
private:
class AutoLock final {
public:
AutoLock(std::shared_ptr<BufferQueueCore>& core_) : core{core_} {
core->lock.lock();
}
~AutoLock() {
core->lock.unlock();
}
private:
std::shared_ptr<BufferQueueCore>& core;
};
private:
mutable std::mutex mutex;
mutable std::unique_lock<std::mutex> lock;
bool is_abandoned{};
bool consumer_controlled_by_app{};
std::shared_ptr<IConsumerListener> consumer_listener;
u32 consumer_usage_bit{};
NativeWindowApi connected_api{NativeWindowApi::NoConnectedApi};
std::shared_ptr<IProducerListener> connected_producer_listener;
BufferQueueDefs::SlotsType slots{};
std::vector<BufferItem> queue;
std::set<s32> free_slots;
std::list<s32> free_buffers;
s32 override_max_buffer_count{};
mutable std::condition_variable dequeue_condition;
const bool use_async_buffer{}; // This is always disabled on HOS
bool dequeue_buffer_cannot_block{};
PixelFormat default_buffer_format{PixelFormat::Rgba8888};
u32 default_width{1};
u32 default_height{1};
s32 default_max_buffer_count{2};
const s32 max_acquired_buffer_count{}; // This is always zero on HOS
bool buffer_has_been_queued{};
u64 frame_counter{};
u32 transform_hint{};
bool is_allocating{};
mutable std::condition_variable is_allocating_condition;
bool allow_allocation{true};
u64 buffer_age{};
bool is_shutting_down{};
};
} // namespace android