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gdi32: Factor out get_bitmap_info.
Signed-off-by: Jacek Caban <jacek@codeweavers.com> Signed-off-by: Huw Davies <huw@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
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parent
6e18d3d2e2
commit
839a951f67
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@ -107,6 +107,84 @@ static void emfdc_update_bounds( struct emf *emf, RECTL *rect )
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}
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}
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static UINT get_bitmap_info( HDC *hdc, HBITMAP *bitmap, BITMAPINFO *info )
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{
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HBITMAP blit_bitmap;
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HDC blit_dc;
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UINT info_size, bpp;
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DIBSECTION dib;
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if (!(info_size = GetObjectW( *bitmap, sizeof(dib), &dib ))) return 0;
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if (info_size == sizeof(dib))
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{
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blit_dc = *hdc;
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blit_bitmap = *bitmap;
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}
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else
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{
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unsigned char dib_info_buffer[FIELD_OFFSET(BITMAPINFO, bmiColors[256])];
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BITMAPINFO *dib_info = (BITMAPINFO *)dib_info_buffer;
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BITMAP bmp = dib.dsBm;
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HPALETTE palette;
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void *bits;
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assert( info_size == sizeof(BITMAP) );
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dib_info->bmiHeader.biSize = sizeof(dib_info->bmiHeader);
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dib_info->bmiHeader.biWidth = bmp.bmWidth;
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dib_info->bmiHeader.biHeight = bmp.bmHeight;
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dib_info->bmiHeader.biPlanes = 1;
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dib_info->bmiHeader.biBitCount = bmp.bmBitsPixel;
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dib_info->bmiHeader.biCompression = BI_RGB;
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dib_info->bmiHeader.biSizeImage = 0;
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dib_info->bmiHeader.biXPelsPerMeter = 0;
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dib_info->bmiHeader.biYPelsPerMeter = 0;
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dib_info->bmiHeader.biClrUsed = 0;
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dib_info->bmiHeader.biClrImportant = 0;
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switch (dib_info->bmiHeader.biBitCount)
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{
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case 16:
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((DWORD *)dib_info->bmiColors)[0] = 0xf800;
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((DWORD *)dib_info->bmiColors)[1] = 0x07e0;
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((DWORD *)dib_info->bmiColors)[2] = 0x001f;
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break;
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case 32:
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((DWORD *)dib_info->bmiColors)[0] = 0xff0000;
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((DWORD *)dib_info->bmiColors)[1] = 0x00ff00;
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((DWORD *)dib_info->bmiColors)[2] = 0x0000ff;
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break;
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default:
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if (dib_info->bmiHeader.biBitCount > 8) break;
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if (!(palette = GetCurrentObject( *hdc, OBJ_PAL ))) return FALSE;
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if (!GetPaletteEntries( palette, 0, 256, (PALETTEENTRY *)dib_info->bmiColors ))
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return FALSE;
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}
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if (!(blit_dc = NtGdiCreateCompatibleDC( *hdc ))) return FALSE;
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if (!(blit_bitmap = CreateDIBSection( blit_dc, dib_info, DIB_RGB_COLORS, &bits, NULL, 0 )))
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goto err;
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if (!SelectObject( blit_dc, blit_bitmap )) goto err;
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if (!BitBlt( blit_dc, 0, 0, bmp.bmWidth, bmp.bmHeight, *hdc, 0, 0, SRCCOPY ))
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goto err;
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}
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if (!GetDIBits( blit_dc, blit_bitmap, 0, INT_MAX, NULL, info, DIB_RGB_COLORS ))
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goto err;
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bpp = info->bmiHeader.biBitCount;
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if (bpp <= 8)
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return sizeof(BITMAPINFOHEADER) + (1 << bpp) * sizeof(RGBQUAD);
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else if (bpp == 16 || bpp == 32)
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return sizeof(BITMAPINFOHEADER) + 3 * sizeof(RGBQUAD);
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return sizeof(BITMAPINFOHEADER);
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err:
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if (blit_dc && blit_dc != *hdc) DeleteDC( blit_dc );
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if (blit_bitmap && blit_bitmap != *bitmap) DeleteObject( blit_bitmap );
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return 0;
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}
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static UINT emfdc_add_handle( struct emf *emf, HGDIOBJ obj )
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{
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UINT index;
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@ -1178,80 +1256,18 @@ static BOOL emfdrv_stretchblt( struct emf *emf, INT x_dst, INT y_dst, INT width_
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DWORD rop, DWORD type )
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{
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BITMAPINFO src_info = {{ sizeof( src_info.bmiHeader ) }};
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UINT bmi_size, emr_size, size, bpp;
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UINT bmi_size, emr_size, size;
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HBITMAP bitmap, blit_bitmap = NULL;
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EMRBITBLT *emr = NULL;
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BITMAPINFO *bmi;
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DIBSECTION dib;
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HDC blit_dc;
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int info_size;
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BOOL ret = FALSE;
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if (!(bitmap = GetCurrentObject( hdc_src, OBJ_BITMAP ))) return FALSE;
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if (!(info_size = GetObjectW( bitmap, sizeof(dib), &dib ))) return FALSE;
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if (info_size == sizeof(DIBSECTION))
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{
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blit_dc = hdc_src;
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blit_bitmap = bitmap;
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}
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else
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{
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unsigned char dib_info_buffer[FIELD_OFFSET(BITMAPINFO, bmiColors[256])];
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BITMAPINFO *dib_info = (BITMAPINFO *)dib_info_buffer;
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BITMAP bmp = dib.dsBm;
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HPALETTE palette;
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void *bits;
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assert( info_size == sizeof(BITMAP) );
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dib_info->bmiHeader.biSize = sizeof(dib_info->bmiHeader);
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dib_info->bmiHeader.biWidth = bmp.bmWidth;
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dib_info->bmiHeader.biHeight = bmp.bmHeight;
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dib_info->bmiHeader.biPlanes = 1;
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dib_info->bmiHeader.biBitCount = bmp.bmBitsPixel;
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dib_info->bmiHeader.biCompression = BI_RGB;
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dib_info->bmiHeader.biSizeImage = 0;
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dib_info->bmiHeader.biXPelsPerMeter = 0;
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dib_info->bmiHeader.biYPelsPerMeter = 0;
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dib_info->bmiHeader.biClrUsed = 0;
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dib_info->bmiHeader.biClrImportant = 0;
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switch (dib_info->bmiHeader.biBitCount)
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{
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case 16:
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((DWORD *)dib_info->bmiColors)[0] = 0xf800;
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((DWORD *)dib_info->bmiColors)[1] = 0x07e0;
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((DWORD *)dib_info->bmiColors)[2] = 0x001f;
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break;
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case 32:
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((DWORD *)dib_info->bmiColors)[0] = 0xff0000;
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((DWORD *)dib_info->bmiColors)[1] = 0x00ff00;
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((DWORD *)dib_info->bmiColors)[2] = 0x0000ff;
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break;
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default:
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if (dib_info->bmiHeader.biBitCount > 8) break;
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if (!(palette = GetCurrentObject( hdc_src, OBJ_PAL ))) return FALSE;
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if (!GetPaletteEntries( palette, 0, 256, (PALETTEENTRY *)dib_info->bmiColors ))
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return FALSE;
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}
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if (!(blit_dc = NtGdiCreateCompatibleDC( hdc_src ))) return FALSE;
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if (!(blit_bitmap = CreateDIBSection( blit_dc, dib_info, DIB_RGB_COLORS, &bits, NULL, 0 )))
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goto err;
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if (!SelectObject( blit_dc, blit_bitmap )) goto err;
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if (!BitBlt( blit_dc, 0, 0, bmp.bmWidth, bmp.bmHeight, hdc_src, 0, 0, SRCCOPY ))
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goto err;
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}
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if (!GetDIBits( blit_dc, blit_bitmap, 0, INT_MAX, NULL, &src_info, DIB_RGB_COLORS ))
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goto err;
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bpp = src_info.bmiHeader.biBitCount;
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if (bpp <= 8)
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bmi_size = sizeof(BITMAPINFOHEADER) + (1 << bpp) * sizeof(RGBQUAD);
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else if (bpp == 16 || bpp == 32)
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bmi_size = sizeof(BITMAPINFOHEADER) + 3 * sizeof(RGBQUAD);
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else
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bmi_size = sizeof(BITMAPINFOHEADER);
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blit_dc = hdc_src;
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blit_bitmap = bitmap;
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if (!(bmi_size = get_bitmap_info( &blit_dc, &blit_bitmap, &src_info ))) return FALSE;
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/* EMRSTRETCHBLT and EMRALPHABLEND have the same structure */
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emr_size = type == EMR_BITBLT ? sizeof(EMRBITBLT) : sizeof(EMRSTRETCHBLT);
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@ -1298,8 +1314,8 @@ static BOOL emfdrv_stretchblt( struct emf *emf, INT x_dst, INT y_dst, INT width_
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err:
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HeapFree( GetProcessHeap(), 0, emr );
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if (blit_bitmap && blit_bitmap != bitmap) DeleteObject( blit_bitmap );
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if (blit_dc && blit_dc != hdc_src) DeleteDC( blit_dc );
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if (blit_bitmap != bitmap) DeleteObject( blit_bitmap );
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if (blit_dc != hdc_src) DeleteDC( blit_dc );
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return ret;
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}
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