WIP sceVideoOutAddFlipEvent implementation

src/Core/PS4/HLE/ErrorCodes.h

@@ -8,5 +8,7 @@ constexpr int SCE_KERNEL_ERROR_EAGAIN = 0x80020023;        // Memory cannot be a
 constexpr int SCE_KERNEL_ERROR_ENAMETOOLONG = 0x8002003f;  // character strings exceeds valid size
 
 // videoOut
-constexpr int SCE_VIDEO_OUT_ERROR_INVALID_VALUE = 0x80290001;  // invalid argument
-constexpr int SCE_VIDEO_OUT_ERROR_RESOURCE_BUSY = 0x80290009;  // already opened
+constexpr int SCE_VIDEO_OUT_ERROR_INVALID_VALUE = 0x80290001;        // invalid argument
+constexpr int SCE_VIDEO_OUT_ERROR_RESOURCE_BUSY = 0x80290009;        // already opened
+constexpr int SCE_VIDEO_OUT_ERROR_INVALID_HANDLE = 0x8029000B;       // invalid handle
+constexpr int SCE_VIDEO_OUT_ERROR_INVALID_EVENT_QUEUE = 0x8029000C;  // Invalid event queue

src/Core/PS4/HLE/Graphics/Objects/video_out_ctx.cpp

@@ -14,7 +14,7 @@ int VideoOutCtx::Open() {
     int handle = -1;
 
     if (!m_video_out_ctx.isOpened) {
-        handle = 1;//positive return , should be more than 1 ?
+        handle = 1;  // positive return , should be more than 1 ?
     }
 
     m_video_out_ctx.isOpened = true;
@@ -26,4 +26,9 @@ int VideoOutCtx::Open() {
 
     return handle;
 }
+
+VideoConfigInternal* VideoOutCtx::getCtx(int handle) {
+    if (handle != 1) return nullptr;
+    return &m_video_out_ctx; // assuming that it's the only ctx TODO check if we need more
+}
 };  // namespace HLE::Graphics::Objects

src/Core/PS4/HLE/Graphics/Objects/video_out_ctx.h

@@ -12,6 +12,7 @@ struct VideoConfigInternal {
     bool isOpened = false;
     SceVideoOutFlipStatus m_flip_status;
     SceVideoOutVblankStatus m_vblank_status;
+    std::vector<HLE::Libs::LibKernel::EventQueues::SceKernelEqueue> flip_evtEq;
 };
 
 class VideoOutCtx {
@@ -21,6 +22,7 @@ class VideoOutCtx {
     virtual ~VideoOutCtx() {}
     void Init(u32 width, u32 height);
     int Open();
+    VideoConfigInternal* getCtx(int handle);
   private:
     Lib::Mutex m_mutex;
     VideoConfigInternal m_video_out_ctx;

src/Core/PS4/HLE/Graphics/video_out.cpp

@@ -60,9 +60,40 @@ void PS4_SYSV_ABI sceVideoOutSetBufferAttribute(SceVideoOutBufferAttribute* attr
 }
 
 s32 PS4_SYSV_ABI sceVideoOutAddFlipEvent(LibKernel::EventQueues::SceKernelEqueue eq, s32 handle, void* udata) {
-    // BREAKPOINT();
-    PRINT_DUMMY_FUNCTION_NAME();
-    return 0;
+    PRINT_FUNCTION_NAME();
+    auto* videoOut = Singleton<HLE::Graphics::Objects::VideoOutCtx>::Instance();
+
+    auto* ctx = videoOut->getCtx(handle);
+
+    if (ctx == nullptr)
+    {
+        return SCE_VIDEO_OUT_ERROR_INVALID_HANDLE;
+    }
+    ctx->m_mutex.LockMutex();
+
+    if (eq == nullptr) {
+        return SCE_VIDEO_OUT_ERROR_INVALID_EVENT_QUEUE;
+    }
+
+    HLE::Kernel::Objects::EqueueEvent event;
+    event.isTriggered = false;
+    event.event.ident = SCE_VIDEO_OUT_EVENT_FLIP;
+    event.event.filter = HLE::Kernel::Objects::EVFILT_VIDEO_OUT;
+    event.event.udata = udata;
+    event.event.fflags = 0;
+    event.event.data = 0;
+    // event.filter.delete_event_func = flip_event_delete_func;//called in sceKernelDeleteEvent
+    // event.filter.reset_event_func = flip_event_reset_func;//called in sceKernelWaitEqueue
+    // event.filter.trigger_event_func = flip_event_trigger_func;//called in sceKernelTriggerEvent
+    event.filter.data = ctx;
+    
+    int result = 0;  // sceKernelAddEvent(eq, event);
+
+    ctx->flip_evtEq.push_back(eq);
+
+    ctx->m_mutex.UnlockMutex();
+
+    return result;
 }
 
 s32 PS4_SYSV_ABI sceVideoOutRegisterBuffers(s32 handle, s32 startIndex, void* const* addresses, s32 bufferNum,

src/Core/PS4/HLE/Graphics/video_out.h

@@ -35,6 +35,11 @@ constexpr int SCE_VIDEO_OUT_BUFFER_ATTRIBUTE_OPTION_NONE = 0;
 constexpr int SCE_VIDEO_OUT_BUFFER_ATTRIBUTE_OPTION_VR = 7;
 constexpr int SCE_VIDEO_OUT_BUFFER_ATTRIBUTE_OPTION_STRICT_COLORIMETRY = 8;
 
+//SceVideoOutEventId
+constexpr int SCE_VIDEO_OUT_EVENT_FLIP = 0;
+constexpr int SCE_VIDEO_OUT_EVENT_VBLANK = 1;
+constexpr int SCE_VIDEO_OUT_EVENT_PRE_VBLANK_START = 2;
+
 enum SceVideoOutTilingMode : s32 { SCE_VIDEO_OUT_TILING_MODE_TILE = 0, SCE_VIDEO_OUT_TILING_MODE_LINEAR = 1 };
 
 enum AspectRatioMode : s32 { SCE_VIDEO_OUT_ASPECT_RATIO_16_9 = 0 };

src/Core/PS4/HLE/Kernel/Objects/event_queue.h

@@ -1,7 +1,64 @@
 #pragma once
+#include <types.h>
+
 #include <string>
 
 namespace HLE::Kernel::Objects {
+
+constexpr s16 EVFILT_READ = -1;
+constexpr s16 EVFILT_WRITE = -2;
+constexpr s16 EVFILT_AIO = -3;     // attached to aio requests
+constexpr s16 EVFILT_VNODE = -4;   // attached to vnodes
+constexpr s16 EVFILT_PROC = -5;    // attached to struct proc
+constexpr s16 EVFILT_SIGNAL = -6;  // attached to struct proc
+constexpr s16 EVFILT_TIMER = -7;   // timers
+constexpr s16 EVFILT_FS = -9;      // filesystem events
+constexpr s16 EVFILT_LIO = -10;    // attached to lio requests
+constexpr s16 EVFILT_USER = -11;   // User events
+constexpr s16 EVFILT_POLLING = -12;
+constexpr s16 EVFILT_VIDEO_OUT = -13;
+constexpr s16 EVFILT_GRAPHICS_CORE = -14;
+constexpr s16 EVFILT_HRTIMER = -15;
+constexpr s16 EVFILT_UVD_TRAP = -16;
+constexpr s16 EVFILT_VCE_TRAP = -17;
+constexpr s16 EVFILT_SDMA_TRAP = -18;
+constexpr s16 EVFILT_REG_EV = -19;
+constexpr s16 EVFILT_GPU_EXCEPTION = -20;
+constexpr s16 EVFILT_GPU_SYSTEM_EXCEPTION = -21;
+constexpr s16 EVFILT_GPU_DBGGC_EV = -22;
+constexpr s16 EVFILT_SYSCOUNT = 22;
+
+class EqueueInternal;
+struct EqueueEvent;
+
+using SceKernelEqueue = Kernel::Objects::EqueueInternal*;
+
+using trigger_func_ptr = void (*)(EqueueEvent* event, void* trigger_data);
+using reset_func_ptr = void (*)(EqueueEvent* event);
+using delete_func_ptr = void (*)(SceKernelEqueue eq, EqueueEvent* event);
+
+struct Event {
+    u64 ident = 0;  /* identifier for this event */
+    s16 filter = 0; /* filter for event */
+    u16 flags = 0;
+    u32 fflags = 0;
+    s64 data = 0;
+    void* udata = nullptr; /* opaque user data identifier */
+};
+
+struct Filter {
+    void* data = nullptr;
+    trigger_func_ptr trigger_event_func = nullptr;
+    reset_func_ptr reset__event_func = nullptr;
+    delete_func_ptr delete_event_func = nullptr;
+};
+
+struct EqueueEvent {
+    bool isTriggered = false;
+    Event event;
+    Filter filter;
+};
+
 class EqueueInternal {
   public:
     EqueueInternal() = default;