// Injected D3D9 capture path: inline-hooks IDirect3DDevice9::Present (discovered from a
// throwaway device's vtable, so it catches the game's existing device regardless of when we
// injected) in Direct3D 9 / 9Ex games, which don't present via IDXGISwapChain. It reads the
// backbuffer back with GetRenderTargetData, swizzles BGRA->RGBA, and uploads it into the same
// shared keyed-mutex texture (coop_video_<pid>) the host samples. Part of the video subsystem,
// alongside present_hook and opengl_hook.
//
// A D3D9 backbuffer isn't directly shareable with D3D11, so this is a CPU read-back
// (GetRenderTargetData -> system memory -> upload via a hook-owned D3D11 device), like the
// OpenGL path. Works for both plain D3D9 and D3D9Ex (both call Present here).
#pragma once

#include "ipc_client.hpp"

namespace coop::hook
{

// Installs the D3D9 Present hook. `ipc` must outlive the hook. Returns true if Present was
// hooked (i.e. d3d9.dll is present and a probe device came up). Safe to call repeatedly.
bool install_d3d9_hooks(IpcClient& ipc);

// Removes the D3D9 hook and releases the shared texture (best effort).
void remove_d3d9_hooks();

// --- Diagnostics -----------------------------------------------------------

std::uint64_t d3d9_presents();      // cumulative IDirect3DDevice9::Present detours
std::uint64_t d3d9_frames_shared(); // frames uploaded into the shared texture

} // namespace coop::hook