1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/core.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/readable_event.h"
#include "core/hle/kernel/writable_event.h"
#include "core/hle/service/nvflinger/buffer_queue.h"
namespace Service::NVFlinger {
BufferQueue::BufferQueue(u32 id, u64 layer_id) : id(id), layer_id(layer_id) {
auto& kernel = Core::System::GetInstance().Kernel();
buffer_wait_event = Kernel::WritableEvent::CreateEventPair(kernel, Kernel::ResetType::Sticky,
"BufferQueue NativeHandle");
}
BufferQueue::~BufferQueue() = default;
void BufferQueue::SetPreallocatedBuffer(u32 slot, const IGBPBuffer& igbp_buffer) {
LOG_WARNING(Service, "Adding graphics buffer {}", slot);
Buffer buffer{};
buffer.slot = slot;
buffer.igbp_buffer = igbp_buffer;
buffer.status = Buffer::Status::Free;
queue.emplace_back(buffer);
buffer_wait_event.writable->Signal();
}
std::optional<u32> BufferQueue::DequeueBuffer(u32 width, u32 height) {
auto itr = std::find_if(queue.begin(), queue.end(), [&](const Buffer& buffer) {
// Only consider free buffers. Buffers become free once again after they've been Acquired
// and Released by the compositor, see the NVFlinger::Compose method.
if (buffer.status != Buffer::Status::Free) {
return false;
}
// Make sure that the parameters match.
return buffer.igbp_buffer.width == width && buffer.igbp_buffer.height == height;
});
if (itr == queue.end()) {
return {};
}
itr->status = Buffer::Status::Dequeued;
return itr->slot;
}
const IGBPBuffer& BufferQueue::RequestBuffer(u32 slot) const {
auto itr = std::find_if(queue.begin(), queue.end(),
[&](const Buffer& buffer) { return buffer.slot == slot; });
ASSERT(itr != queue.end());
ASSERT(itr->status == Buffer::Status::Dequeued);
return itr->igbp_buffer;
}
void BufferQueue::QueueBuffer(u32 slot, BufferTransformFlags transform,
const MathUtil::Rectangle<int>& crop_rect) {
auto itr = std::find_if(queue.begin(), queue.end(),
[&](const Buffer& buffer) { return buffer.slot == slot; });
ASSERT(itr != queue.end());
ASSERT(itr->status == Buffer::Status::Dequeued);
itr->status = Buffer::Status::Queued;
itr->transform = transform;
itr->crop_rect = crop_rect;
}
std::optional<std::reference_wrapper<const BufferQueue::Buffer>> BufferQueue::AcquireBuffer() {
auto itr = std::find_if(queue.begin(), queue.end(), [](const Buffer& buffer) {
return buffer.status == Buffer::Status::Queued;
});
if (itr == queue.end())
return {};
itr->status = Buffer::Status::Acquired;
return *itr;
}
void BufferQueue::ReleaseBuffer(u32 slot) {
auto itr = std::find_if(queue.begin(), queue.end(),
[&](const Buffer& buffer) { return buffer.slot == slot; });
ASSERT(itr != queue.end());
ASSERT(itr->status == Buffer::Status::Acquired);
itr->status = Buffer::Status::Free;
buffer_wait_event.writable->Signal();
}
u32 BufferQueue::Query(QueryType type) {
LOG_WARNING(Service, "(STUBBED) called type={}", static_cast<u32>(type));
switch (type) {
case QueryType::NativeWindowFormat:
// TODO(Subv): Use an enum for this
static constexpr u32 FormatABGR8 = 1;
return FormatABGR8;
}
UNIMPLEMENTED();
return 0;
}
Kernel::SharedPtr<Kernel::WritableEvent> BufferQueue::GetWritableBufferWaitEvent() const {
return buffer_wait_event.writable;
}
Kernel::SharedPtr<Kernel::ReadableEvent> BufferQueue::GetBufferWaitEvent() const {
return buffer_wait_event.readable;
}
} // namespace Service::NVFlinger
|
