summaryrefslogtreecommitdiffstats
path: root/src/core/hle/service/vi/vi.cpp
blob: b35a7a377f8cc5632975d0120c61ccdf29501089 (plain) (blame)
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
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#include <algorithm>

#include "common/alignment.h"
#include "common/scope_exit.h"
#include "core/core_timing.h"
#include "core/hle/ipc_helpers.h"
#include "core/hle/service/nvdrv/devices/nvdisp_disp0.h"
#include "core/hle/service/nvdrv/nvdrv_a.h"
#include "core/hle/service/vi/vi.h"
#include "core/hle/service/vi/vi_m.h"
#include "video_core/renderer_base.h"
#include "video_core/video_core.h"

namespace Service {
namespace VI {

constexpr size_t SCREEN_REFRESH_RATE = 60;
constexpr u64 frame_ticks = static_cast<u64>(BASE_CLOCK_RATE / SCREEN_REFRESH_RATE);

class Parcel {
public:
    // This default size was chosen arbitrarily.
    static constexpr size_t DefaultBufferSize = 0x40;
    Parcel() : buffer(DefaultBufferSize) {}
    Parcel(std::vector<u8> data) : buffer(std::move(data)) {}
    virtual ~Parcel() = default;

    template <typename T>
    T Read() {
        T val;
        std::memcpy(&val, buffer.data() + read_index, sizeof(T));
        read_index += sizeof(T);
        read_index = Common::AlignUp(read_index, 4);
        return val;
    }

    template <typename T>
    T ReadUnaligned() {
        T val;
        std::memcpy(&val, buffer.data() + read_index, sizeof(T));
        read_index += sizeof(T);
        return val;
    }

    std::vector<u8> ReadBlock(size_t length) {
        std::vector<u8> data(length);
        std::memcpy(data.data(), buffer.data() + read_index, length);
        read_index += length;
        read_index = Common::AlignUp(read_index, 4);
        return data;
    }

    std::u16string ReadInterfaceToken() {
        u32 unknown = Read<u32_le>();
        u32 length = Read<u32_le>();

        std::u16string token{};

        for (u32 ch = 0; ch < length + 1; ++ch) {
            token.push_back(ReadUnaligned<u16_le>());
        }

        read_index = Common::AlignUp(read_index, 4);

        return token;
    }

    template <typename T>
    void Write(const T& val) {
        if (buffer.size() < write_index + sizeof(T))
            buffer.resize(buffer.size() + sizeof(T) + DefaultBufferSize);
        std::memcpy(buffer.data() + write_index, &val, sizeof(T));
        write_index += sizeof(T);
        write_index = Common::AlignUp(write_index, 4);
    }

    void Deserialize() {
        Header header{};
        std::memcpy(&header, buffer.data(), sizeof(Header));

        read_index = header.data_offset;
        DeserializeData();
    }

    std::vector<u8> Serialize() {
        ASSERT(read_index == 0);
        write_index = sizeof(Header);

        SerializeData();

        Header header{};
        header.data_offset = sizeof(Header);
        header.data_size = write_index - sizeof(Header);
        std::memcpy(buffer.data(), &header, sizeof(Header));

        return buffer;
    }

protected:
    virtual void SerializeData(){};

    virtual void DeserializeData(){};

private:
    struct Header {
        u32_le data_size;
        u32_le data_offset;
        u32_le objects_size;
        u32_le objects_offset;
    };
    static_assert(sizeof(Header) == 16, "ParcelHeader has wrong size");

    std::vector<u8> buffer;
    size_t read_index = 0;
    size_t write_index = 0;
};

class NativeWindow : public Parcel {
public:
    NativeWindow(u32 id) : Parcel() {
        data.id = id;
    }
    ~NativeWindow() override = default;

protected:
    void SerializeData() override {
        Write(data);
    }

private:
    struct Data {
        u32_le magic = 2;
        u32_le process_id;
        u32_le id;
        INSERT_PADDING_BYTES(0xC);
        std::array<u8, 8> dspdrv = {'d', 's', 'p', 'd', 'r', 'v'};
        INSERT_PADDING_BYTES(8);
    };
    static_assert(sizeof(Data) == 0x28, "ParcelData has wrong size");

    Data data{};
};

class IGBPConnectRequestParcel : public Parcel {
public:
    IGBPConnectRequestParcel(const std::vector<u8>& buffer) : Parcel(buffer) {
        Deserialize();
    }
    ~IGBPConnectRequestParcel() override = default;

    void DeserializeData() {
        std::u16string token = ReadInterfaceToken();
        data = Read<Data>();
    }

    struct Data {
        u32_le unk;
        u32_le api;
        u32_le producer_controlled_by_app;
    };

    Data data;
};

class IGBPConnectResponseParcel : public Parcel {
public:
    IGBPConnectResponseParcel(u32 width, u32 height) : Parcel() {
        data.width = width;
        data.height = height;
    }
    ~IGBPConnectResponseParcel() override = default;

protected:
    void SerializeData() override {
        Write(data);
    }

private:
    struct Data {
        u32_le width;
        u32_le height;
        u32_le transform_hint;
        u32_le num_pending_buffers;
        u32_le status;
    };
    static_assert(sizeof(Data) == 20, "ParcelData has wrong size");

    Data data{};
};

class IGBPSetPreallocatedBufferRequestParcel : public Parcel {
public:
    IGBPSetPreallocatedBufferRequestParcel(const std::vector<u8>& buffer) : Parcel(buffer) {
        Deserialize();
    }
    ~IGBPSetPreallocatedBufferRequestParcel() override = default;

    void DeserializeData() {
        std::u16string token = ReadInterfaceToken();
        data = Read<Data>();
        ASSERT(data.graphic_buffer_length == sizeof(IGBPBuffer));
        buffer = Read<IGBPBuffer>();
    }

    struct Data {
        u32_le slot;
        INSERT_PADDING_WORDS(1);
        u32_le graphic_buffer_length;
        INSERT_PADDING_WORDS(1);
    };

    Data data;
    IGBPBuffer buffer;
};

class IGBPSetPreallocatedBufferResponseParcel : public Parcel {
public:
    IGBPSetPreallocatedBufferResponseParcel() : Parcel() {}
    ~IGBPSetPreallocatedBufferResponseParcel() override = default;

protected:
    void SerializeData() override {
        // TODO(Subv): Find out what this means
        Write<u32>(0);
    }
};

class IGBPDequeueBufferRequestParcel : public Parcel {
public:
    IGBPDequeueBufferRequestParcel(const std::vector<u8>& buffer) : Parcel(buffer) {
        Deserialize();
    }
    ~IGBPDequeueBufferRequestParcel() override = default;

    void DeserializeData() {
        std::u16string token = ReadInterfaceToken();
        data = Read<Data>();
    }

    struct Data {
        u32_le pixel_format;
        u32_le width;
        u32_le height;
        u32_le get_frame_timestamps;
        u32_le usage;
    };

    Data data;
};

class IGBPDequeueBufferResponseParcel : public Parcel {
public:
    IGBPDequeueBufferResponseParcel(u32 slot) : Parcel(), slot(slot) {}
    ~IGBPDequeueBufferResponseParcel() override = default;

protected:
    void SerializeData() override {
        Write(slot);
        // TODO(Subv): Find out how this Fence is used.
        std::array<u32_le, 11> fence = {};
        Write(fence);
        Write<u32_le>(0);
    }

    u32_le slot;
};

class IGBPRequestBufferRequestParcel : public Parcel {
public:
    IGBPRequestBufferRequestParcel(const std::vector<u8>& buffer) : Parcel(buffer) {
        Deserialize();
    }
    ~IGBPRequestBufferRequestParcel() override = default;

    void DeserializeData() {
        std::u16string token = ReadInterfaceToken();
        slot = Read<u32_le>();
    }

    u32_le slot;
};

class IGBPRequestBufferResponseParcel : public Parcel {
public:
    IGBPRequestBufferResponseParcel(IGBPBuffer buffer) : Parcel(), buffer(buffer) {}
    ~IGBPRequestBufferResponseParcel() override = default;

protected:
    void SerializeData() override {
        // TODO(Subv): Find out what this all means
        Write<u32_le>(1);

        Write<u32_le>(sizeof(IGBPBuffer));
        Write<u32_le>(0); // Unknown

        Write(buffer);

        Write<u32_le>(0);
    }

    IGBPBuffer buffer;
};

class IGBPQueueBufferRequestParcel : public Parcel {
public:
    IGBPQueueBufferRequestParcel(const std::vector<u8>& buffer) : Parcel(buffer) {
        Deserialize();
    }
    ~IGBPQueueBufferRequestParcel() override = default;

    void DeserializeData() {
        std::u16string token = ReadInterfaceToken();
        data = Read<Data>();
    }

    struct Data {
        u32_le slot;
        INSERT_PADDING_WORDS(2);
        u32_le timestamp;
        INSERT_PADDING_WORDS(20);
    };
    static_assert(sizeof(Data) == 96, "ParcelData has wrong size");

    Data data;
};

class IGBPQueueBufferResponseParcel : public Parcel {
public:
    IGBPQueueBufferResponseParcel(u32 width, u32 height) : Parcel() {
        data.width = width;
        data.height = height;
    }
    ~IGBPQueueBufferResponseParcel() override = default;

protected:
    void SerializeData() override {
        Write(data);
    }

private:
    struct Data {
        u32_le width;
        u32_le height;
        u32_le transform_hint;
        u32_le num_pending_buffers;
        u32_le status;
    };
    static_assert(sizeof(Data) == 20, "ParcelData has wrong size");

    Data data{};
};

class IHOSBinderDriver final : public ServiceFramework<IHOSBinderDriver> {
public:
    IHOSBinderDriver(std::shared_ptr<NVFlinger> nv_flinger)
        : ServiceFramework("IHOSBinderDriver"), nv_flinger(std::move(nv_flinger)) {
        static const FunctionInfo functions[] = {
            {0, &IHOSBinderDriver::TransactParcel, "TransactParcel"},
            {1, &IHOSBinderDriver::AdjustRefcount, "AdjustRefcount"},
            {2, nullptr, "GetNativeHandle"},
            {3, nullptr, "TransactParcelAuto"},
        };
        RegisterHandlers(functions);
    }
    ~IHOSBinderDriver() = default;

private:
    enum class TransactionId {
        RequestBuffer = 1,
        SetBufferCount = 2,
        DequeueBuffer = 3,
        DetachBuffer = 4,
        DetachNextBuffer = 5,
        AttachBuffer = 6,
        QueueBuffer = 7,
        CancelBuffer = 8,
        Query = 9,
        Connect = 10,
        Disconnect = 11,

        AllocateBuffers = 13,
        SetPreallocatedBuffer = 14
    };

    void TransactParcel(Kernel::HLERequestContext& ctx) {
        IPC::RequestParser rp{ctx};
        u32 id = rp.Pop<u32>();
        auto transaction = static_cast<TransactionId>(rp.Pop<u32>());
        u32 flags = rp.Pop<u32>();

        auto& input_buffer = ctx.BufferDescriptorA()[0];
        std::vector<u8> input_data(input_buffer.Size());
        Memory::ReadBlock(input_buffer.Address(), input_data.data(), input_buffer.Size());

        auto& output_buffer = ctx.BufferDescriptorB()[0];

        auto buffer_queue = nv_flinger->GetBufferQueue(id);

        if (transaction == TransactionId::Connect) {
            IGBPConnectRequestParcel request{input_data};
            IGBPConnectResponseParcel response{1280, 720};
            auto response_buffer = response.Serialize();
            Memory::WriteBlock(output_buffer.Address(), response_buffer.data(),
                               output_buffer.Size());
        } else if (transaction == TransactionId::SetPreallocatedBuffer) {
            IGBPSetPreallocatedBufferRequestParcel request{input_data};

            buffer_queue->SetPreallocatedBuffer(request.data.slot, request.buffer);

            IGBPSetPreallocatedBufferResponseParcel response{};
            auto response_buffer = response.Serialize();
            Memory::WriteBlock(output_buffer.Address(), response_buffer.data(),
                               output_buffer.Size());
        } else if (transaction == TransactionId::DequeueBuffer) {
            IGBPDequeueBufferRequestParcel request{input_data};

            u32 slot = buffer_queue->DequeueBuffer(request.data.pixel_format, request.data.width,
                                                   request.data.height);

            IGBPDequeueBufferResponseParcel response{slot};
            auto response_buffer = response.Serialize();
            Memory::WriteBlock(output_buffer.Address(), response_buffer.data(),
                               output_buffer.Size());
        } else if (transaction == TransactionId::RequestBuffer) {
            IGBPRequestBufferRequestParcel request{input_data};

            auto& buffer = buffer_queue->RequestBuffer(request.slot);

            IGBPRequestBufferResponseParcel response{buffer};
            auto response_buffer = response.Serialize();
            Memory::WriteBlock(output_buffer.Address(), response_buffer.data(),
                               output_buffer.Size());
        } else if (transaction == TransactionId::QueueBuffer) {
            IGBPQueueBufferRequestParcel request{input_data};

            buffer_queue->QueueBuffer(request.data.slot);

            IGBPQueueBufferResponseParcel response{1280, 720};
            auto response_buffer = response.Serialize();
            Memory::WriteBlock(output_buffer.Address(), response_buffer.data(),
                               output_buffer.Size());
        } else {
            ASSERT_MSG(false, "Unimplemented");
        }

        LOG_WARNING(Service, "(STUBBED) called");
        IPC::RequestBuilder rb{ctx, 2};
        rb.Push(RESULT_SUCCESS);
    }

    void AdjustRefcount(Kernel::HLERequestContext& ctx) {
        IPC::RequestParser rp{ctx};
        u32 id = rp.Pop<u32>();
        s32 addval = rp.PopRaw<s32>();
        u32 type = rp.Pop<u32>();

        LOG_WARNING(Service, "(STUBBED) called id=%u, addval=%08X, type=%08X", id, addval, type);
        IPC::RequestBuilder rb{ctx, 2};
        rb.Push(RESULT_SUCCESS);
    }

    std::shared_ptr<NVFlinger> nv_flinger;
};

class ISystemDisplayService final : public ServiceFramework<ISystemDisplayService> {
public:
    ISystemDisplayService() : ServiceFramework("ISystemDisplayService") {
        static const FunctionInfo functions[] = {
            {1200, nullptr, "GetZOrderCountMin"},
            {2205, &ISystemDisplayService::SetLayerZ, "SetLayerZ"},
        };
        RegisterHandlers(functions);
    }
    ~ISystemDisplayService() = default;

private:
    void SetLayerZ(Kernel::HLERequestContext& ctx) {
        LOG_WARNING(Service, "(STUBBED) called");
        IPC::RequestParser rp{ctx};
        u64 layer_id = rp.Pop<u64>();
        u64 z_value = rp.Pop<u64>();

        IPC::RequestBuilder rb = rp.MakeBuilder(2, 0, 0, 0);
        rb.Push(RESULT_SUCCESS);
    }
};

class IManagerDisplayService final : public ServiceFramework<IManagerDisplayService> {
public:
    IManagerDisplayService(std::shared_ptr<NVFlinger> nv_flinger)
        : ServiceFramework("IManagerDisplayService"), nv_flinger(std::move(nv_flinger)) {
        static const FunctionInfo functions[] = {
            {1102, nullptr, "GetDisplayResolution"},
            {2010, &IManagerDisplayService::CreateManagedLayer, "CreateManagedLayer"},
            {6000, &IManagerDisplayService::AddToLayerStack, "AddToLayerStack"},
        };
        RegisterHandlers(functions);
    }
    ~IManagerDisplayService() = default;

private:
    void CreateManagedLayer(Kernel::HLERequestContext& ctx) {
        LOG_WARNING(Service, "(STUBBED) called");
        IPC::RequestParser rp{ctx};
        u32 unknown = rp.Pop<u32>();
        rp.Skip(1, false);
        u64 display = rp.Pop<u64>();
        u64 aruid = rp.Pop<u64>();

        u64 layer_id = nv_flinger->CreateLayer(display);

        IPC::RequestBuilder rb = rp.MakeBuilder(4, 0, 0, 0);
        rb.Push(RESULT_SUCCESS);
        rb.Push(layer_id);
    }

    void AddToLayerStack(Kernel::HLERequestContext& ctx) {
        LOG_WARNING(Service, "(STUBBED) called");
        IPC::RequestParser rp{ctx};
        u32 stack = rp.Pop<u32>();
        u64 layer_id = rp.Pop<u64>();

        IPC::RequestBuilder rb = rp.MakeBuilder(2, 0, 0, 0);
        rb.Push(RESULT_SUCCESS);
    }

    std::shared_ptr<NVFlinger> nv_flinger;
};

void IApplicationDisplayService::GetRelayService(Kernel::HLERequestContext& ctx) {
    LOG_WARNING(Service, "(STUBBED) called");

    IPC::RequestBuilder rb{ctx, 2, 0, 0, 1};
    rb.Push(RESULT_SUCCESS);
    rb.PushIpcInterface<IHOSBinderDriver>(nv_flinger);
}

void IApplicationDisplayService::GetSystemDisplayService(Kernel::HLERequestContext& ctx) {
    LOG_WARNING(Service, "(STUBBED) called");

    IPC::RequestBuilder rb{ctx, 2, 0, 0, 1};
    rb.Push(RESULT_SUCCESS);
    rb.PushIpcInterface<ISystemDisplayService>();
}

void IApplicationDisplayService::GetManagerDisplayService(Kernel::HLERequestContext& ctx) {
    LOG_WARNING(Service, "(STUBBED) called");

    IPC::RequestBuilder rb{ctx, 2, 0, 0, 1};
    rb.Push(RESULT_SUCCESS);
    rb.PushIpcInterface<IManagerDisplayService>(nv_flinger);
}

void IApplicationDisplayService::OpenDisplay(Kernel::HLERequestContext& ctx) {
    LOG_WARNING(Service, "(STUBBED) called");
    IPC::RequestParser rp{ctx};
    auto name_buf = rp.PopRaw<std::array<u8, 0x40>>();
    auto end = std::find(name_buf.begin(), name_buf.end(), '\0');

    std::string name(name_buf.begin(), end);

    ASSERT_MSG(name == "Default", "Non-default displays aren't supported yet");

    IPC::RequestBuilder rb = rp.MakeBuilder(4, 0, 0, 0);
    rb.Push(RESULT_SUCCESS);
    rb.Push<u64>(nv_flinger->OpenDisplay(name));
}

void IApplicationDisplayService::OpenLayer(Kernel::HLERequestContext& ctx) {
    LOG_WARNING(Service, "(STUBBED) called");
    IPC::RequestParser rp{ctx};
    auto name_buf = rp.PopRaw<std::array<u8, 0x40>>();
    auto end = std::find(name_buf.begin(), name_buf.end(), '\0');

    std::string display_name(name_buf.begin(), end);

    u64 layer_id = rp.Pop<u64>();
    u64 aruid = rp.Pop<u64>();

    auto& buffer = ctx.BufferDescriptorB()[0];

    u64 display_id = nv_flinger->OpenDisplay(display_name);
    u32 buffer_queue_id = nv_flinger->GetBufferQueueId(display_id, layer_id);

    NativeWindow native_window{buffer_queue_id};
    auto data = native_window.Serialize();
    Memory::WriteBlock(buffer.Address(), data.data(), data.size());

    IPC::RequestBuilder rb = rp.MakeBuilder(4, 0, 0, 0);
    rb.Push(RESULT_SUCCESS);
    rb.Push<u64>(data.size());
}

void IApplicationDisplayService::SetLayerScalingMode(Kernel::HLERequestContext& ctx) {
    LOG_WARNING(Service, "(STUBBED) called");
    IPC::RequestParser rp{ctx};
    u32 scaling_mode = rp.Pop<u32>();
    u64 unknown = rp.Pop<u64>();

    IPC::RequestBuilder rb = rp.MakeBuilder(2, 0, 0, 0);
    rb.Push(RESULT_SUCCESS);
}

void IApplicationDisplayService::GetDisplayVsyncEvent(Kernel::HLERequestContext& ctx) {
    LOG_WARNING(Service, "(STUBBED) called");
    IPC::RequestParser rp{ctx};
    u64 display_id = rp.Pop<u64>();

    auto vsync_event = nv_flinger->GetVsyncEvent(display_id);

    IPC::RequestBuilder rb = rp.MakeBuilder(2, 1, 0, 0);
    rb.Push(RESULT_SUCCESS);
    rb.PushCopyObjects(vsync_event);
}

IApplicationDisplayService::IApplicationDisplayService(std::shared_ptr<NVFlinger> nv_flinger)
    : ServiceFramework("IApplicationDisplayService"), nv_flinger(std::move(nv_flinger)) {
    static const FunctionInfo functions[] = {
        {100, &IApplicationDisplayService::GetRelayService, "GetRelayService"},
        {101, &IApplicationDisplayService::GetSystemDisplayService, "GetSystemDisplayService"},
        {102, &IApplicationDisplayService::GetManagerDisplayService, "GetManagerDisplayService"},
        {103, nullptr, "GetIndirectDisplayTransactionService"},
        {1000, nullptr, "ListDisplays"},
        {1010, &IApplicationDisplayService::OpenDisplay, "OpenDisplay"},
        {2101, &IApplicationDisplayService::SetLayerScalingMode, "SetLayerScalingMode"},
        {2020, &IApplicationDisplayService::OpenLayer, "OpenLayer"},
        {5202, &IApplicationDisplayService::GetDisplayVsyncEvent, "GetDisplayVsyncEvent"},
    };
    RegisterHandlers(functions);
}

void InstallInterfaces(SM::ServiceManager& service_manager) {
    std::make_shared<VI_M>()->InstallAsService(service_manager);
}

NVFlinger::NVFlinger() {
    // Add the different displays to the list of displays.
    Display default_{0, "Default"};
    Display external{1, "External"};
    Display edid{2, "Edid"};
    Display internal{3, "Internal"};

    displays.emplace_back(default_);
    displays.emplace_back(external);
    displays.emplace_back(edid);
    displays.emplace_back(internal);

    // Schedule the screen composition events
    composition_event =
        CoreTiming::RegisterEvent("ScreenCompositioin", [this](u64 userdata, int cycles_late) {
            Compose();
            CoreTiming::ScheduleEvent(frame_ticks - cycles_late, composition_event);
        });

    CoreTiming::ScheduleEvent(frame_ticks, composition_event);
}

NVFlinger::~NVFlinger() {
    CoreTiming::UnscheduleEvent(composition_event, 0);
}

u64 NVFlinger::OpenDisplay(const std::string& name) {
    LOG_WARNING(Service, "Opening display %s", name.c_str());

    // TODO(Subv): Currently we only support the Default display.
    ASSERT(name == "Default");

    auto itr = std::find_if(displays.begin(), displays.end(),
                            [&](const Display& display) { return display.name == name; });

    ASSERT(itr != displays.end());

    return itr->id;
}

u64 NVFlinger::CreateLayer(u64 display_id) {
    auto& display = GetDisplay(display_id);

    ASSERT_MSG(display.layers.empty(), "Only one layer is supported per display at the moment");

    u64 layer_id = next_layer_id++;
    u32 buffer_queue_id = next_buffer_queue_id++;
    auto buffer_queue = std::make_shared<BufferQueue>(buffer_queue_id, layer_id);
    display.layers.emplace_back(layer_id, buffer_queue);
    buffer_queues.emplace_back(std::move(buffer_queue));
    return layer_id;
}

u32 NVFlinger::GetBufferQueueId(u64 display_id, u64 layer_id) {
    const auto& layer = GetLayer(display_id, layer_id);
    return layer.buffer_queue->GetId();
}

Kernel::SharedPtr<Kernel::Event> NVFlinger::GetVsyncEvent(u64 display_id) {
    const auto& display = GetDisplay(display_id);
    return display.vsync_event;
}

std::shared_ptr<BufferQueue> NVFlinger::GetBufferQueue(u32 id) const {
    auto itr = std::find_if(buffer_queues.begin(), buffer_queues.end(),
                            [&](const auto& queue) { return queue->GetId() == id; });

    ASSERT(itr != buffer_queues.end());
    return *itr;
}

Display& NVFlinger::GetDisplay(u64 display_id) {
    auto itr = std::find_if(displays.begin(), displays.end(),
                            [&](const Display& display) { return display.id == display_id; });

    ASSERT(itr != displays.end());
    return *itr;
}

Layer& NVFlinger::GetLayer(u64 display_id, u64 layer_id) {
    auto& display = GetDisplay(display_id);

    auto itr = std::find_if(display.layers.begin(), display.layers.end(),
                            [&](const Layer& layer) { return layer.id == layer_id; });

    ASSERT(itr != display.layers.end());
    return *itr;
}

void NVFlinger::Compose() {
    for (auto& display : displays) {
        // Trigger vsync for this display at the end of drawing
        SCOPE_EXIT({ display.vsync_event->Signal(); });

        // Don't do anything for displays without layers.
        if (display.layers.empty())
            continue;

        // TODO(Subv): Support more than 1 layer.
        ASSERT_MSG(display.layers.size() == 1, "Max 1 layer per display is supported");

        Layer& layer = display.layers[0];
        auto& buffer_queue = layer.buffer_queue;

        // Search for a queued buffer and acquire it
        auto buffer = buffer_queue->AcquireBuffer();

        if (buffer == boost::none) {
            // There was no queued buffer to draw, render previous frame
            VideoCore::g_renderer->SwapBuffers({});
            continue;
        }

        auto& igbp_buffer = buffer->igbp_buffer;

        // Now send the buffer to the GPU for drawing.
        auto nvdrv = NVDRV::nvdrv_a.lock();
        ASSERT(nvdrv);

        // TODO(Subv): Support more than just disp0. The display device selection is probably based
        // on which display we're drawing (Default, Internal, External, etc)
        auto nvdisp = nvdrv->GetDevice<NVDRV::Devices::nvdisp_disp0>("/dev/nvdisp_disp0");
        ASSERT(nvdisp);

        nvdisp->flip(igbp_buffer.gpu_buffer_id, igbp_buffer.offset, igbp_buffer.format,
                     igbp_buffer.width, igbp_buffer.height, igbp_buffer.stride);

        buffer_queue->ReleaseBuffer(buffer->slot);
    }
}

BufferQueue::BufferQueue(u32 id, u64 layer_id) : id(id), layer_id(layer_id) {}

void BufferQueue::SetPreallocatedBuffer(u32 slot, IGBPBuffer& igbp_buffer) {
    Buffer buffer{};
    buffer.slot = slot;
    buffer.igbp_buffer = igbp_buffer;
    buffer.status = Buffer::Status::Free;

    LOG_WARNING(Service, "Adding graphics buffer %u", slot);

    queue.emplace_back(buffer);
}

u32 BufferQueue::DequeueBuffer(u32 pixel_format, 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.
        auto& igbp_buffer = buffer.igbp_buffer;
        return igbp_buffer.format == pixel_format && igbp_buffer.width == width &&
               igbp_buffer.height == height;
    });
    ASSERT(itr != queue.end());

    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) {
    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;
}

boost::optional<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 boost::none;
    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;
}

Layer::Layer(u64 id, std::shared_ptr<BufferQueue> queue) : id(id), buffer_queue(std::move(queue)) {}

Display::Display(u64 id, std::string name) : id(id), name(std::move(name)) {
    vsync_event = Kernel::Event::Create(Kernel::ResetType::Pulse, "Display VSync Event");
}

} // namespace VI
} // namespace Service