#include "mxdisplaysurface.h"
#include "mxomni.h"

DECOMP_SIZE_ASSERT(MxDisplaySurface, 0xac);

// OFFSET: LEGO1 0x100ba500
MxDisplaySurface::MxDisplaySurface()
{
  this->Reset();
}

// OFFSET: LEGO1 0x100ba5a0
MxDisplaySurface::~MxDisplaySurface()
{
  this->Clear();
}

// OFFSET: LEGO1 0x100ba610
void MxDisplaySurface::Reset()
{
  this->m_ddSurface1 = NULL;
  this->m_ddSurface2 = NULL;
  this->m_ddClipper = NULL;
  this->m_16bitPal = NULL;
  this->m_initialized = FALSE;
  memset(&this->m_surfaceDesc, 0, sizeof(this->m_surfaceDesc));
}

// OFFSET: LEGO1 0x100ba790
MxResult MxDisplaySurface::Init(MxVideoParam &p_videoParam, LPDIRECTDRAWSURFACE p_ddSurface1, LPDIRECTDRAWSURFACE p_ddSurface2, LPDIRECTDRAWCLIPPER p_ddClipper)
{
  MxResult result = SUCCESS;

  this->m_videoParam = p_videoParam;
  this->m_ddSurface1 = p_ddSurface1;
  this->m_ddSurface2 = p_ddSurface2;
  this->m_ddClipper = p_ddClipper;
  this->m_initialized = FALSE;

  memset(&this->m_surfaceDesc, 0, sizeof(this->m_surfaceDesc));
  this->m_surfaceDesc.dwSize = sizeof(this->m_surfaceDesc);

  if (this->m_ddSurface2->GetSurfaceDesc(&this->m_surfaceDesc))
    result = FAILURE;

  return result;
}

// OFFSET: LEGO1 0x100ba7f0
MxResult MxDisplaySurface::Create(MxVideoParam &p_videoParam)
{
  DDSURFACEDESC ddsd;
  MxResult result = FAILURE;
  LPDIRECTDRAW lpDirectDraw = MVideoManager()->GetDirectDraw();
  HWND hWnd = MxOmni::GetInstance()->GetWindowHandle();

  this->m_initialized = TRUE;
  this->m_videoParam = p_videoParam;

  if (!this->m_videoParam.flags().GetFullScreen())
    this->m_videoParam.flags().SetFlipSurfaces(FALSE);

  if (!this->m_videoParam.flags().GetFlipSurfaces()) {
    this->m_videoParam.SetBackBuffers(1);
  }
  else {
    MxU32 backBuffers = this->m_videoParam.GetBackBuffers();

    if (backBuffers < 1)
      this->m_videoParam.SetBackBuffers(1);
    else if (backBuffers > 2)
      this->m_videoParam.SetBackBuffers(2);

    this->m_videoParam.flags().SetBackBuffers(TRUE);
  }

  if (this->m_videoParam.flags().GetFullScreen()) {
    MxS32 width = this->m_videoParam.GetRect().m_right - this->m_videoParam.GetRect().m_left + 1;
    MxS32 height = this->m_videoParam.GetRect().m_bottom - this->m_videoParam.GetRect().m_top + 1;

    if (lpDirectDraw->SetCooperativeLevel(hWnd, DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN))
      goto done;

    memset(&ddsd, 0, sizeof(ddsd));
    ddsd.dwSize = sizeof(ddsd);

    if (lpDirectDraw->GetDisplayMode(&ddsd))
      goto done;

    MxS32 bitdepth = !this->m_videoParam.flags().Get16Bit() ? 8 : 16;

    if (ddsd.dwWidth != width || ddsd.dwHeight != height || ddsd.ddpfPixelFormat.dwRGBBitCount != bitdepth) {
      if (lpDirectDraw->SetDisplayMode(width, height, bitdepth))
        goto done;
    }
  }

  if (this->m_videoParam.flags().GetFlipSurfaces()) {
    memset(&ddsd, 0, sizeof(ddsd));
    ddsd.dwSize = sizeof(ddsd);
    ddsd.dwBackBufferCount = this->m_videoParam.GetBackBuffers();
    ddsd.dwFlags = DDSD_CAPS | DDSD_BACKBUFFERCOUNT;
    ddsd.ddsCaps.dwCaps = DDSCAPS_3DDEVICE | DDSCAPS_PRIMARYSURFACE | DDSCAPS_FLIP | DDSCAPS_COMPLEX;

    if (lpDirectDraw->CreateSurface(&ddsd, &this->m_ddSurface1, NULL))
      goto done;

    ddsd.ddsCaps.dwCaps = DDSCAPS_BACKBUFFER;

    if (this->m_ddSurface1->GetAttachedSurface(&ddsd.ddsCaps, &this->m_ddSurface2))
      goto done;
  }
  else {
    memset(&ddsd, 0, sizeof(ddsd));
    ddsd.dwSize = sizeof(ddsd);
    ddsd.dwFlags = DDSD_CAPS;
    ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;

    if (lpDirectDraw->CreateSurface(&ddsd, &this->m_ddSurface1, NULL))
      goto done;

    memset(&ddsd, 0, sizeof(ddsd));
    ddsd.dwSize = sizeof(ddsd);
    ddsd.dwFlags = DDSD_HEIGHT | DDSD_WIDTH | DDSD_CAPS;
    ddsd.dwWidth = this->m_videoParam.GetRect().m_right - this->m_videoParam.GetRect().m_left + 1;
    ddsd.dwHeight = this->m_videoParam.GetRect().m_bottom - this->m_videoParam.GetRect().m_top + 1;
    ddsd.ddsCaps.dwCaps = DDSCAPS_VIDEOMEMORY | DDSCAPS_3DDEVICE | DDSCAPS_OFFSCREENPLAIN;

    if (!this->m_videoParam.flags().GetBackBuffers())
      ddsd.ddsCaps.dwCaps = DDSCAPS_3DDEVICE | DDSCAPS_SYSTEMMEMORY | DDSCAPS_OFFSCREENPLAIN;

    if (lpDirectDraw->CreateSurface(&ddsd, &this->m_ddSurface2, NULL))
      goto done;
  }

  memset(&this->m_surfaceDesc, 0, sizeof(this->m_surfaceDesc));
  this->m_surfaceDesc.dwSize = sizeof(this->m_surfaceDesc);

  if (!this->m_ddSurface2->GetSurfaceDesc(&this->m_surfaceDesc)) {
    if (!lpDirectDraw->CreateClipper(0, &this->m_ddClipper, NULL) &&
        !this->m_ddClipper->SetHWnd(0, hWnd) &&
        !this->m_ddSurface1->SetClipper(this->m_ddClipper))
      result = SUCCESS;
  }

done:
  return result;
}

// OFFSET: LEGO1 0x100baa90
void MxDisplaySurface::Clear()
{
  if (this->m_initialized) {
    if (this->m_ddSurface2)
      this->m_ddSurface2->Release();

    if (this->m_ddSurface1)
      this->m_ddSurface1->Release();

    if (this->m_ddClipper)
      this->m_ddClipper->Release();
  }

  if (this->m_16bitPal)
    delete this->m_16bitPal;

  this->Reset();
}

// OFFSET: LEGO1 0x100baae0 STUB
void MxDisplaySurface::SetPalette(MxPalette *p_palette)
{

}

// OFFSET: LEGO1 0x100bc200 STUB
void MxDisplaySurface::vtable24(undefined4, undefined4, undefined4, undefined4, undefined4, undefined4, undefined4, undefined4)
{

}

// OFFSET: LEGO1 0x100bacc0 STUB
MxBool MxDisplaySurface::vtable28(undefined4, undefined4, undefined4, undefined4, undefined4, undefined4, undefined4)
{
  return 0;
}

// OFFSET: LEGO1 0x100bc630 STUB
MxBool MxDisplaySurface::vtable2c(undefined4, undefined4, undefined4, undefined4, undefined4, undefined4, undefined4, undefined4, MxBool)
{
  return 0;
}

// OFFSET: LEGO1 0x100bb1d0 STUB
MxBool MxDisplaySurface::vtable30(undefined4, undefined4, undefined4, undefined4, undefined4, undefined4, undefined4, MxBool)
{
  return 0;
}

// OFFSET: LEGO1 0x100bb850 STUB
undefined4 MxDisplaySurface::vtable34(undefined4, undefined4, undefined4, undefined4, undefined4, undefined4)
{
  return 0;
}

// OFFSET: LEGO1 0x100bba50 STUB
void MxDisplaySurface::Display(undefined4, undefined4, undefined4, undefined4, undefined4, undefined4)
{

}

// OFFSET: LEGO1 0x100bbc10
void MxDisplaySurface::GetDC(HDC *p_hdc)
{
  if (this->m_ddSurface2 && !this->m_ddSurface2->GetDC(p_hdc))
    return;
 
  *p_hdc = NULL;
}

// OFFSET: LEGO1 0x100bbc40
void MxDisplaySurface::ReleaseDC(HDC p_hdc)
{
  if (this->m_ddSurface2 && p_hdc)
    this->m_ddSurface2->ReleaseDC(p_hdc);
}

// OFFSET: LEGO1 0x100bbc60 STUB
undefined4 MxDisplaySurface::vtable44(undefined4, undefined4*, undefined4, undefined4)
{
  return 0;
}