/* * GDI device-independent bitmaps * * Copyright 1993,1994 Alexandre Julliard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ /* Important information: * Current Windows versions support two different DIB structures: - BITMAPCOREINFO / BITMAPCOREHEADER (legacy structures; used in OS/2) - BITMAPINFO / BITMAPINFOHEADER Most Windows API functions taking a BITMAPINFO* / BITMAPINFOHEADER* also accept the old "core" structures, and so must WINE. You can distinguish them by looking at the first member (bcSize/biSize). * The palettes are stored in different formats: - BITMAPCOREINFO: Array of RGBTRIPLE - BITMAPINFO: Array of RGBQUAD * There are even more DIB headers, but they all extend BITMAPINFOHEADER: - BITMAPV4HEADER: Introduced in Windows 95 / NT 4.0 - BITMAPV5HEADER: Introduced in Windows 98 / 2000 If biCompression is BI_BITFIELDS, the color masks are at the same position in all the headers (they start at bmiColors of BITMAPINFOHEADER), because the new headers have structure members for the masks. * You should never access the color table using the bmiColors member, because the passed structure may have one of the extended headers mentioned above. Use this to calculate the location: BITMAPINFO* info; void* colorPtr = (LPBYTE) info + (WORD) info->bmiHeader.biSize; * More information: Search for "Bitmap Structures" in MSDN */ #include #include #include #include #include "windef.h" #include "winbase.h" #include "gdi_private.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(bitmap); static HGDIOBJ DIB_SelectObject( HGDIOBJ handle, HDC hdc ); static INT DIB_GetObject( HGDIOBJ handle, INT count, LPVOID buffer ); static BOOL DIB_DeleteObject( HGDIOBJ handle ); static const struct gdi_obj_funcs dib_funcs = { DIB_SelectObject, /* pSelectObject */ DIB_GetObject, /* pGetObjectA */ DIB_GetObject, /* pGetObjectW */ NULL, /* pUnrealizeObject */ DIB_DeleteObject /* pDeleteObject */ }; /*********************************************************************** * bitmap_info_size * * Return the size of the bitmap info structure including color table. */ int bitmap_info_size( const BITMAPINFO * info, WORD coloruse ) { unsigned int colors, size, masks = 0; if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER)) { const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)info; colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0; return sizeof(BITMAPCOREHEADER) + colors * ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD)); } else /* assume BITMAPINFOHEADER */ { if (info->bmiHeader.biClrUsed) colors = min( info->bmiHeader.biClrUsed, 256 ); else colors = info->bmiHeader.biBitCount > 8 ? 0 : 1 << info->bmiHeader.biBitCount; if (info->bmiHeader.biCompression == BI_BITFIELDS) masks = 3; size = max( info->bmiHeader.biSize, sizeof(BITMAPINFOHEADER) + masks * sizeof(DWORD) ); return size + colors * ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD)); } } /******************************************************************************************* * Verify that the DIB parameters are valid. */ static BOOL is_valid_dib_format( const BITMAPINFOHEADER *info, BOOL allow_compression ) { if (info->biWidth <= 0) return FALSE; if (info->biHeight == 0) return FALSE; if (allow_compression && (info->biCompression == BI_RLE4 || info->biCompression == BI_RLE8)) { if (info->biHeight < 0) return FALSE; if (!info->biSizeImage) return FALSE; return info->biBitCount == (info->biCompression == BI_RLE4 ? 4 : 8); } if (!info->biPlanes) return FALSE; /* check for size overflow */ if (!info->biBitCount) return FALSE; if (UINT_MAX / info->biBitCount < info->biWidth) return FALSE; if (UINT_MAX / get_dib_stride( info->biWidth, info->biBitCount ) < abs( info->biHeight )) return FALSE; switch (info->biBitCount) { case 1: case 4: case 8: case 24: return (info->biCompression == BI_RGB); case 16: case 32: return (info->biCompression == BI_BITFIELDS || info->biCompression == BI_RGB); default: return FALSE; } } /******************************************************************************************* * Fill out a true BITMAPINFOHEADER from a variable sized BITMAPINFOHEADER / BITMAPCOREHEADER. */ static BOOL bitmapinfoheader_from_user_bitmapinfo( BITMAPINFOHEADER *dst, const BITMAPINFOHEADER *info ) { if (!info) return FALSE; if (info->biSize == sizeof(BITMAPCOREHEADER)) { const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)info; dst->biWidth = core->bcWidth; dst->biHeight = core->bcHeight; dst->biPlanes = core->bcPlanes; dst->biBitCount = core->bcBitCount; dst->biCompression = BI_RGB; dst->biXPelsPerMeter = 0; dst->biYPelsPerMeter = 0; dst->biClrUsed = 0; dst->biClrImportant = 0; } else if (info->biSize >= sizeof(BITMAPINFOHEADER)) /* assume BITMAPINFOHEADER */ { *dst = *info; } else { WARN( "(%u): unknown/wrong size for header\n", info->biSize ); return FALSE; } dst->biSize = sizeof(*dst); if (dst->biCompression == BI_RGB || dst->biCompression == BI_BITFIELDS) dst->biSizeImage = get_dib_image_size( (BITMAPINFO *)dst ); return TRUE; } /******************************************************************************************* * Fill out a true BITMAPINFO from a variable sized BITMAPINFO / BITMAPCOREINFO. * * The resulting sanitized BITMAPINFO is guaranteed to have: * - biSize set to sizeof(BITMAPINFOHEADER) * - biSizeImage set to the actual image size even for non-compressed DIB * - biClrUsed set to the size of the color table, and 0 only when there is no color table * - color table present only for <= 8 bpp, always starts at info->bmiColors */ static BOOL bitmapinfo_from_user_bitmapinfo( BITMAPINFO *dst, const BITMAPINFO *info, UINT coloruse, BOOL allow_compression ) { void *src_colors; if (coloruse > DIB_PAL_COLORS + 1) return FALSE; /* FIXME: handle DIB_PAL_COLORS+1 format */ if (!bitmapinfoheader_from_user_bitmapinfo( &dst->bmiHeader, &info->bmiHeader )) return FALSE; if (!is_valid_dib_format( &dst->bmiHeader, allow_compression )) return FALSE; src_colors = (char *)info + info->bmiHeader.biSize; if (dst->bmiHeader.biCompression == BI_BITFIELDS) { /* bitfields are always at bmiColors even in larger structures */ memcpy( dst->bmiColors, info->bmiColors, 3 * sizeof(DWORD) ); dst->bmiHeader.biClrUsed = 0; } else if (dst->bmiHeader.biBitCount <= 8) { unsigned int colors = dst->bmiHeader.biClrUsed; unsigned int max_colors = 1 << dst->bmiHeader.biBitCount; if (!colors) colors = max_colors; else colors = min( colors, max_colors ); if (coloruse == DIB_PAL_COLORS) { memcpy( dst->bmiColors, src_colors, colors * sizeof(WORD) ); max_colors = colors; } else if (info->bmiHeader.biSize != sizeof(BITMAPCOREHEADER)) { memcpy( dst->bmiColors, src_colors, colors * sizeof(RGBQUAD) ); } else { unsigned int i; RGBTRIPLE *triple = (RGBTRIPLE *)src_colors; for (i = 0; i < colors; i++) { dst->bmiColors[i].rgbRed = triple[i].rgbtRed; dst->bmiColors[i].rgbGreen = triple[i].rgbtGreen; dst->bmiColors[i].rgbBlue = triple[i].rgbtBlue; dst->bmiColors[i].rgbReserved = 0; } } memset( dst->bmiColors + colors, 0, (max_colors - colors) * sizeof(RGBQUAD) ); dst->bmiHeader.biClrUsed = max_colors; } else dst->bmiHeader.biClrUsed = 0; return TRUE; } static int fill_color_table_from_palette( BITMAPINFO *info, HDC hdc ) { PALETTEENTRY palEntry[256]; HPALETTE palette = GetCurrentObject( hdc, OBJ_PAL ); int i, colors = 1 << info->bmiHeader.biBitCount; info->bmiHeader.biClrUsed = colors; if (!palette) return 0; memset( palEntry, 0, sizeof(palEntry) ); if (!GetPaletteEntries( palette, 0, colors, palEntry )) return 0; for (i = 0; i < colors; i++) { info->bmiColors[i].rgbRed = palEntry[i].peRed; info->bmiColors[i].rgbGreen = palEntry[i].peGreen; info->bmiColors[i].rgbBlue = palEntry[i].peBlue; info->bmiColors[i].rgbReserved = 0; } return colors; } BOOL fill_color_table_from_pal_colors( BITMAPINFO *info, HDC hdc ) { PALETTEENTRY entries[256]; RGBQUAD table[256]; HPALETTE palette; const WORD *index = (const WORD *)info->bmiColors; int i, count, colors = info->bmiHeader.biClrUsed; if (!colors) return TRUE; if (!(palette = GetCurrentObject( hdc, OBJ_PAL ))) return FALSE; if (!(count = GetPaletteEntries( palette, 0, colors, entries ))) return FALSE; for (i = 0; i < colors; i++, index++) { table[i].rgbRed = entries[*index % count].peRed; table[i].rgbGreen = entries[*index % count].peGreen; table[i].rgbBlue = entries[*index % count].peBlue; table[i].rgbReserved = 0; } info->bmiHeader.biClrUsed = 1 << info->bmiHeader.biBitCount; memcpy( info->bmiColors, table, colors * sizeof(RGBQUAD) ); memset( info->bmiColors + colors, 0, (info->bmiHeader.biClrUsed - colors) * sizeof(RGBQUAD) ); return TRUE; } static void *get_pixel_ptr( const BITMAPINFO *info, void *bits, int x, int y ) { const int width = info->bmiHeader.biWidth, height = info->bmiHeader.biHeight; const int bpp = info->bmiHeader.biBitCount; if (height > 0) return (char *)bits + (height - y - 1) * get_dib_stride( width, bpp ) + x * bpp / 8; else return (char *)bits + y * get_dib_stride( width, bpp ) + x * bpp / 8; } static BOOL build_rle_bitmap( const BITMAPINFO *info, struct gdi_image_bits *bits, HRGN *clip ) { DWORD i = 0; int left, right; int x, y, width = info->bmiHeader.biWidth, height = info->bmiHeader.biHeight; HRGN run = NULL; BYTE skip, num, data; BYTE *out_bits, *in_bits = bits->ptr; if (clip) *clip = NULL; assert( info->bmiHeader.biBitCount == 4 || info->bmiHeader.biBitCount == 8 ); out_bits = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, get_dib_image_size( info ) ); if (!out_bits) goto fail; if (clip) { *clip = CreateRectRgn( 0, 0, 0, 0 ); run = CreateRectRgn( 0, 0, 0, 0 ); if (!*clip || !run) goto fail; } x = left = right = 0; y = height - 1; while (i < info->bmiHeader.biSizeImage - 1) { num = in_bits[i]; data = in_bits[i + 1]; i += 2; if (num) { if (x + num > width) num = width - x; if (num) { BYTE s = data, *out_ptr = get_pixel_ptr( info, out_bits, x, y ); if (info->bmiHeader.biBitCount == 8) memset( out_ptr, s, num ); else { if(x & 1) { s = ((s >> 4) & 0x0f) | ((s << 4) & 0xf0); *out_ptr = (*out_ptr & 0xf0) | (s & 0x0f); out_ptr++; x++; num--; } /* this will write one too many if num is odd, but that doesn't matter */ if (num) memset( out_ptr, s, (num + 1) / 2 ); } } x += num; right = x; } else { if (data < 3) { if(left != right && clip) { SetRectRgn( run, left, y, right, y + 1 ); CombineRgn( *clip, run, *clip, RGN_OR ); } switch (data) { case 0: /* eol */ left = right = x = 0; y--; if(y < 0) goto done; break; case 1: /* eod */ goto done; case 2: /* delta */ if (i >= info->bmiHeader.biSizeImage - 1) goto done; x += in_bits[i]; if (x > width) x = width; left = right = x; y -= in_bits[i + 1]; if(y < 0) goto done; i += 2; } } else /* data bytes of data */ { num = data; skip = (num * info->bmiHeader.biBitCount + 7) / 8; if (skip > info->bmiHeader.biSizeImage - i) goto done; skip = (skip + 1) & ~1; if (x + num > width) num = width - x; if (num) { BYTE *out_ptr = get_pixel_ptr( info, out_bits, x, y ); if (info->bmiHeader.biBitCount == 8) memcpy( out_ptr, in_bits + i, num ); else { if(x & 1) { const BYTE *in_ptr = in_bits + i; for ( ; num; num--, x++) { if (x & 1) { *out_ptr = (*out_ptr & 0xf0) | ((*in_ptr >> 4) & 0x0f); out_ptr++; } else *out_ptr = (*in_ptr++ << 4) & 0xf0; } } else memcpy( out_ptr, in_bits + i, (num + 1) / 2); } } x += num; right = x; i += skip; } } } done: if (run) DeleteObject( run ); if (bits->free) bits->free( bits ); bits->ptr = out_bits; bits->is_copy = TRUE; bits->free = free_heap_bits; return TRUE; fail: if (run) DeleteObject( run ); if (clip && *clip) DeleteObject( *clip ); HeapFree( GetProcessHeap(), 0, out_bits ); return FALSE; } INT nulldrv_StretchDIBits( PHYSDEV dev, INT xDst, INT yDst, INT widthDst, INT heightDst, INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, const void *bits, BITMAPINFO *src_info, UINT coloruse, DWORD rop ) { DC *dc = get_nulldrv_dc( dev ); char dst_buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; BITMAPINFO *dst_info = (BITMAPINFO *)dst_buffer; struct bitblt_coords src, dst; struct gdi_image_bits src_bits; DWORD err; HRGN clip = NULL; INT ret = 0; INT height = abs( src_info->bmiHeader.biHeight ); BOOL top_down = src_info->bmiHeader.biHeight < 0, non_stretch_from_origin = FALSE; RECT rect; TRACE("%d %d %d %d <- %d %d %d %d rop %08x\n", xDst, yDst, widthDst, heightDst, xSrc, ySrc, widthSrc, heightSrc, rop); src_bits.ptr = (void*)bits; src_bits.is_copy = FALSE; src_bits.free = NULL; if (coloruse == DIB_PAL_COLORS && !fill_color_table_from_pal_colors( src_info, dev->hdc )) return 0; rect.left = xDst; rect.top = yDst; rect.right = xDst + widthDst; rect.bottom = yDst + heightDst; LPtoDP( dc->hSelf, (POINT *)&rect, 2 ); dst.x = rect.left; dst.y = rect.top; dst.width = rect.right - rect.left; dst.height = rect.bottom - rect.top; if (dc->layout & LAYOUT_RTL && rop & NOMIRRORBITMAP) { dst.x += dst.width; dst.width = -dst.width; } rop &= ~NOMIRRORBITMAP; src.x = xSrc; src.width = widthSrc; src.y = ySrc; src.height = heightSrc; if (src.x == 0 && src.y == 0 && src.width == dst.width && src.height == dst.height) non_stretch_from_origin = TRUE; if (src_info->bmiHeader.biCompression == BI_RLE4 || src_info->bmiHeader.biCompression == BI_RLE8) { BOOL want_clip = non_stretch_from_origin && (rop == SRCCOPY); if (!build_rle_bitmap( src_info, &src_bits, want_clip ? &clip : NULL )) return 0; } if (rop != SRCCOPY || non_stretch_from_origin) { if (dst.width == 1 && src.width > 1) src.width--; if (dst.height == 1 && src.height > 1) src.height--; } if (rop != SRCCOPY) { if (dst.width < 0 && dst.width == src.width) { /* This is off-by-one, but that's what Windows does */ dst.x += dst.width; src.x += src.width; dst.width = -dst.width; src.width = -src.width; } if (dst.height < 0 && dst.height == src.height) { dst.y += dst.height; src.y += src.height; dst.height = -dst.height; src.height = -src.height; } } if (!top_down || (rop == SRCCOPY && !non_stretch_from_origin)) src.y = height - src.y - src.height; if (src.y >= height && src.y + src.height + 1 < height) src.y = height - 1; else if (src.y > 0 && src.y + src.height + 1 < 0) src.y = -src.height - 1; get_bounding_rect( &rect, src.x, src.y, src.width, src.height ); src.visrect.left = 0; src.visrect.right = src_info->bmiHeader.biWidth; src.visrect.top = 0; src.visrect.bottom = height; if (!intersect_rect( &src.visrect, &src.visrect, &rect )) goto done; if (rop == SRCCOPY) ret = height; else ret = src_info->bmiHeader.biHeight; get_bounding_rect( &rect, dst.x, dst.y, dst.width, dst.height ); if (!clip_visrect( dc, &dst.visrect, &rect )) goto done; if (!intersect_vis_rectangles( &dst, &src )) goto done; if (clip) OffsetRgn( clip, dst.x - src.x, dst.y - src.y ); dev = GET_DC_PHYSDEV( dc, pPutImage ); copy_bitmapinfo( dst_info, src_info ); err = dev->funcs->pPutImage( dev, clip, dst_info, &src_bits, &src, &dst, rop ); if (err == ERROR_BAD_FORMAT) { /* 1-bpp destination without a color table requires a fake 1-entry table * that contains only the background color */ if (dst_info->bmiHeader.biBitCount == 1 && !dst_info->bmiHeader.biClrUsed) { COLORREF color = GetBkColor( dev->hdc ); dst_info->bmiColors[0].rgbRed = GetRValue( color ); dst_info->bmiColors[0].rgbGreen = GetGValue( color ); dst_info->bmiColors[0].rgbBlue = GetBValue( color ); dst_info->bmiColors[0].rgbReserved = 0; dst_info->bmiHeader.biClrUsed = 1; } if (!(err = convert_bits( src_info, &src, dst_info, &src_bits ))) { /* get rid of the fake 1-bpp table */ if (dst_info->bmiHeader.biClrUsed == 1) dst_info->bmiHeader.biClrUsed = 0; err = dev->funcs->pPutImage( dev, clip, dst_info, &src_bits, &src, &dst, rop ); } } if (err == ERROR_TRANSFORM_NOT_SUPPORTED) { copy_bitmapinfo( src_info, dst_info ); err = stretch_bits( src_info, &src, dst_info, &dst, &src_bits, GetStretchBltMode( dev->hdc ) ); if (!err) err = dev->funcs->pPutImage( dev, NULL, dst_info, &src_bits, &src, &dst, rop ); } if (err) ret = 0; done: if (src_bits.free) src_bits.free( &src_bits ); if (clip) DeleteObject( clip ); return ret; } /*********************************************************************** * StretchDIBits (GDI32.@) */ INT WINAPI StretchDIBits(HDC hdc, INT xDst, INT yDst, INT widthDst, INT heightDst, INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, const void *bits, const BITMAPINFO *bmi, UINT coloruse, DWORD rop ) { char buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; BITMAPINFO *info = (BITMAPINFO *)buffer; PHYSDEV physdev; DC *dc; INT ret = 0; if (!bits) return 0; if (!bitmapinfo_from_user_bitmapinfo( info, bmi, coloruse, TRUE )) { SetLastError( ERROR_INVALID_PARAMETER ); return 0; } if ((dc = get_dc_ptr( hdc ))) { update_dc( dc ); physdev = GET_DC_PHYSDEV( dc, pStretchDIBits ); ret = physdev->funcs->pStretchDIBits( physdev, xDst, yDst, widthDst, heightDst, xSrc, ySrc, widthSrc, heightSrc, bits, info, coloruse, rop ); release_dc_ptr( dc ); } return ret; } /****************************************************************************** * SetDIBits [GDI32.@] * * Sets pixels in a bitmap using colors from DIB. * * PARAMS * hdc [I] Handle to device context * hbitmap [I] Handle to bitmap * startscan [I] Starting scan line * lines [I] Number of scan lines * bits [I] Array of bitmap bits * info [I] Address of structure with data * coloruse [I] Type of color indexes to use * * RETURNS * Success: Number of scan lines copied * Failure: 0 */ INT WINAPI SetDIBits( HDC hdc, HBITMAP hbitmap, UINT startscan, UINT lines, LPCVOID bits, const BITMAPINFO *info, UINT coloruse ) { BITMAPOBJ *bitmap; char src_bmibuf[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; BITMAPINFO *src_info = (BITMAPINFO *)src_bmibuf; char dst_bmibuf[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; BITMAPINFO *dst_info = (BITMAPINFO *)dst_bmibuf; INT result = 0; DWORD err; struct gdi_image_bits src_bits; struct bitblt_coords src, dst; INT src_to_dst_offset; HRGN clip = 0; if (!bitmapinfo_from_user_bitmapinfo( src_info, info, coloruse, TRUE ) || coloruse > DIB_PAL_COLORS) { SetLastError( ERROR_INVALID_PARAMETER ); return 0; } if (src_info->bmiHeader.biCompression == BI_BITFIELDS) { DWORD *masks = (DWORD *)src_info->bmiColors; if (!masks[0] || !masks[1] || !masks[2]) { SetLastError( ERROR_INVALID_PARAMETER ); return 0; } } src_bits.ptr = (void *)bits; src_bits.is_copy = FALSE; src_bits.free = NULL; src_bits.param = NULL; if (coloruse == DIB_PAL_COLORS && !fill_color_table_from_pal_colors( src_info, hdc )) return 0; if (!(bitmap = GDI_GetObjPtr( hbitmap, OBJ_BITMAP ))) return 0; if (src_info->bmiHeader.biCompression == BI_RLE4 || src_info->bmiHeader.biCompression == BI_RLE8) { if (lines == 0) goto done; else lines = src_info->bmiHeader.biHeight; startscan = 0; if (!build_rle_bitmap( src_info, &src_bits, &clip )) goto done; } dst.visrect.left = 0; dst.visrect.top = 0; dst.visrect.right = bitmap->dib.dsBm.bmWidth; dst.visrect.bottom = bitmap->dib.dsBm.bmHeight; src.visrect.left = 0; src.visrect.top = 0; src.visrect.right = src_info->bmiHeader.biWidth; src.visrect.bottom = abs( src_info->bmiHeader.biHeight ); if (src_info->bmiHeader.biHeight > 0) { src_to_dst_offset = -startscan; lines = min( lines, src.visrect.bottom - startscan ); if (lines < src.visrect.bottom) src.visrect.top = src.visrect.bottom - lines; } else { src_to_dst_offset = src.visrect.bottom - lines - startscan; /* Unlike the bottom-up case, Windows doesn't limit lines. */ if (lines < src.visrect.bottom) src.visrect.bottom = lines; } result = lines; offset_rect( &src.visrect, 0, src_to_dst_offset ); if (!intersect_rect( &dst.visrect, &src.visrect, &dst.visrect )) goto done; src.visrect = dst.visrect; offset_rect( &src.visrect, 0, -src_to_dst_offset ); src.x = src.visrect.left; src.y = src.visrect.top; src.width = src.visrect.right - src.visrect.left; src.height = src.visrect.bottom - src.visrect.top; dst.x = dst.visrect.left; dst.y = dst.visrect.top; dst.width = dst.visrect.right - dst.visrect.left; dst.height = dst.visrect.bottom - dst.visrect.top; copy_bitmapinfo( dst_info, src_info ); err = put_image_into_bitmap( bitmap, clip, dst_info, &src_bits, &src, &dst ); if (err == ERROR_BAD_FORMAT) { err = convert_bits( src_info, &src, dst_info, &src_bits ); if (!err) err = put_image_into_bitmap( bitmap, clip, dst_info, &src_bits, &src, &dst ); } if(err) result = 0; done: if (src_bits.free) src_bits.free( &src_bits ); if (clip) DeleteObject( clip ); GDI_ReleaseObj( hbitmap ); return result; } INT nulldrv_SetDIBitsToDevice( PHYSDEV dev, INT x_dst, INT y_dst, DWORD cx, DWORD cy, INT x_src, INT y_src, UINT startscan, UINT lines, const void *bits, BITMAPINFO *src_info, UINT coloruse ) { DC *dc = get_nulldrv_dc( dev ); char dst_buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; BITMAPINFO *dst_info = (BITMAPINFO *)dst_buffer; struct bitblt_coords src, dst; struct gdi_image_bits src_bits; HRGN clip = 0; DWORD err; UINT height; BOOL top_down; POINT pt; RECT rect; top_down = (src_info->bmiHeader.biHeight < 0); height = abs( src_info->bmiHeader.biHeight ); src_bits.ptr = (void *)bits; src_bits.is_copy = FALSE; src_bits.free = NULL; if (!lines) return 0; if (coloruse == DIB_PAL_COLORS && !fill_color_table_from_pal_colors( src_info, dev->hdc )) return 0; if (src_info->bmiHeader.biCompression == BI_RLE4 || src_info->bmiHeader.biCompression == BI_RLE8) { startscan = 0; lines = height; src_info->bmiHeader.biWidth = x_src + cx; src_info->bmiHeader.biHeight = y_src + cy; if (src_info->bmiHeader.biWidth <= 0 || src_info->bmiHeader.biHeight <= 0) return 0; src.x = x_src; src.y = 0; src.width = cx; src.height = cy; if (!build_rle_bitmap( src_info, &src_bits, &clip )) return 0; } else { if (startscan >= height) return 0; if (!top_down && lines > height - startscan) lines = height - startscan; /* map src to top-down coordinates with startscan as origin */ src.x = x_src; src.y = startscan + lines - (y_src + cy); src.width = cx; src.height = cy; if (src.y > 0) { if (!top_down) { /* get rid of unnecessary lines */ if (src.y >= lines) return 0; lines -= src.y; src.y = 0; } else if (src.y >= lines) return lines; } src_info->bmiHeader.biHeight = top_down ? -lines : lines; } src.visrect.left = src.x; src.visrect.top = src.y; src.visrect.right = src.x + cx; src.visrect.bottom = src.y + cy; rect.left = 0; rect.top = 0; rect.right = src_info->bmiHeader.biWidth; rect.bottom = abs( src_info->bmiHeader.biHeight ); if (!intersect_rect( &src.visrect, &src.visrect, &rect )) { lines = 0; goto done; } pt.x = x_dst; pt.y = y_dst; LPtoDP( dev->hdc, &pt, 1 ); dst.x = pt.x; dst.y = pt.y; dst.width = cx; dst.height = cy; if (GetLayout( dev->hdc ) & LAYOUT_RTL) dst.x -= cx - 1; rect.left = dst.x; rect.top = dst.y; rect.right = dst.x + cx; rect.bottom = dst.y + cy; if (!clip_visrect( dc, &dst.visrect, &rect )) goto done; offset_rect( &src.visrect, dst.x - src.x, dst.y - src.y ); intersect_rect( &rect, &src.visrect, &dst.visrect ); src.visrect = dst.visrect = rect; offset_rect( &src.visrect, src.x - dst.x, src.y - dst.y ); if (is_rect_empty( &dst.visrect )) goto done; if (clip) OffsetRgn( clip, dst.x - src.x, dst.y - src.y ); dev = GET_DC_PHYSDEV( dc, pPutImage ); copy_bitmapinfo( dst_info, src_info ); err = dev->funcs->pPutImage( dev, clip, dst_info, &src_bits, &src, &dst, SRCCOPY ); if (err == ERROR_BAD_FORMAT) { err = convert_bits( src_info, &src, dst_info, &src_bits ); if (!err) err = dev->funcs->pPutImage( dev, clip, dst_info, &src_bits, &src, &dst, SRCCOPY ); } if (err) lines = 0; done: if (src_bits.free) src_bits.free( &src_bits ); if (clip) DeleteObject( clip ); return lines; } /*********************************************************************** * SetDIBitsToDevice (GDI32.@) */ INT WINAPI SetDIBitsToDevice(HDC hdc, INT xDest, INT yDest, DWORD cx, DWORD cy, INT xSrc, INT ySrc, UINT startscan, UINT lines, LPCVOID bits, const BITMAPINFO *bmi, UINT coloruse ) { char buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; BITMAPINFO *info = (BITMAPINFO *)buffer; PHYSDEV physdev; INT ret = 0; DC *dc; if (!bits) return 0; if (!bitmapinfo_from_user_bitmapinfo( info, bmi, coloruse, TRUE )) { SetLastError( ERROR_INVALID_PARAMETER ); return 0; } if ((dc = get_dc_ptr( hdc ))) { update_dc( dc ); physdev = GET_DC_PHYSDEV( dc, pSetDIBitsToDevice ); ret = physdev->funcs->pSetDIBitsToDevice( physdev, xDest, yDest, cx, cy, xSrc, ySrc, startscan, lines, bits, info, coloruse ); release_dc_ptr( dc ); } return ret; } /*********************************************************************** * SetDIBColorTable (GDI32.@) */ UINT WINAPI SetDIBColorTable( HDC hdc, UINT startpos, UINT entries, const RGBQUAD *colors ) { DC * dc; UINT result = 0; BITMAPOBJ * bitmap; if (!(dc = get_dc_ptr( hdc ))) return 0; if ((bitmap = GDI_GetObjPtr( dc->hBitmap, OBJ_BITMAP ))) { if (startpos < bitmap->dib.dsBmih.biClrUsed) { result = min( entries, bitmap->dib.dsBmih.biClrUsed - startpos ); memcpy(bitmap->color_table + startpos, colors, result * sizeof(RGBQUAD)); } GDI_ReleaseObj( dc->hBitmap ); if (result) /* update colors of selected objects */ { SetTextColor( hdc, dc->textColor ); SetBkColor( hdc, dc->backgroundColor ); SelectObject( hdc, dc->hPen ); SelectObject( hdc, dc->hBrush ); } } release_dc_ptr( dc ); return result; } /*********************************************************************** * GetDIBColorTable (GDI32.@) */ UINT WINAPI GetDIBColorTable( HDC hdc, UINT startpos, UINT entries, RGBQUAD *colors ) { DC * dc; BITMAPOBJ *bitmap; UINT result = 0; if (!(dc = get_dc_ptr( hdc ))) return 0; if ((bitmap = GDI_GetObjPtr( dc->hBitmap, OBJ_BITMAP ))) { if (startpos < bitmap->dib.dsBmih.biClrUsed) { result = min( entries, bitmap->dib.dsBmih.biClrUsed - startpos ); memcpy(colors, bitmap->color_table + startpos, result * sizeof(RGBQUAD)); } GDI_ReleaseObj( dc->hBitmap ); } release_dc_ptr( dc ); return result; } static const DWORD bit_fields_888[3] = {0xff0000, 0x00ff00, 0x0000ff}; static const DWORD bit_fields_565[3] = {0xf800, 0x07e0, 0x001f}; static const DWORD bit_fields_555[3] = {0x7c00, 0x03e0, 0x001f}; static int fill_query_info( BITMAPINFO *info, BITMAPOBJ *bmp ) { BITMAPINFOHEADER header; header.biSize = info->bmiHeader.biSize; /* Ensure we don't overwrite the original size when we copy back */ header.biWidth = bmp->dib.dsBm.bmWidth; header.biHeight = bmp->dib.dsBm.bmHeight; header.biPlanes = 1; header.biBitCount = bmp->dib.dsBm.bmBitsPixel; switch (header.biBitCount) { case 16: case 32: header.biCompression = BI_BITFIELDS; break; default: header.biCompression = BI_RGB; break; } header.biSizeImage = get_dib_image_size( (BITMAPINFO *)&header ); header.biXPelsPerMeter = 0; header.biYPelsPerMeter = 0; header.biClrUsed = 0; header.biClrImportant = 0; if ( info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER) ) { BITMAPCOREHEADER *coreheader = (BITMAPCOREHEADER *)info; coreheader->bcWidth = header.biWidth; coreheader->bcHeight = header.biHeight; coreheader->bcPlanes = header.biPlanes; coreheader->bcBitCount = header.biBitCount; } else info->bmiHeader = header; return bmp->dib.dsBm.bmHeight; } /************************************************************************ * copy_color_info * * Copy BITMAPINFO color information where dst may be a BITMAPCOREINFO. */ static void copy_color_info(BITMAPINFO *dst, const BITMAPINFO *src, UINT coloruse) { assert( src->bmiHeader.biSize == sizeof(BITMAPINFOHEADER) ); if (dst->bmiHeader.biSize == sizeof(BITMAPCOREHEADER)) { BITMAPCOREINFO *core = (BITMAPCOREINFO *)dst; if (coloruse == DIB_PAL_COLORS) memcpy( core->bmciColors, src->bmiColors, src->bmiHeader.biClrUsed * sizeof(WORD) ); else { unsigned int i; for (i = 0; i < src->bmiHeader.biClrUsed; i++) { core->bmciColors[i].rgbtRed = src->bmiColors[i].rgbRed; core->bmciColors[i].rgbtGreen = src->bmiColors[i].rgbGreen; core->bmciColors[i].rgbtBlue = src->bmiColors[i].rgbBlue; } } } else { dst->bmiHeader.biClrUsed = src->bmiHeader.biClrUsed; dst->bmiHeader.biSizeImage = src->bmiHeader.biSizeImage; if (src->bmiHeader.biCompression == BI_BITFIELDS) /* bitfields are always at bmiColors even in larger structures */ memcpy( dst->bmiColors, src->bmiColors, 3 * sizeof(DWORD) ); else if (src->bmiHeader.biClrUsed) { void *colorptr = (char *)dst + dst->bmiHeader.biSize; unsigned int size; if (coloruse == DIB_PAL_COLORS) size = src->bmiHeader.biClrUsed * sizeof(WORD); else size = src->bmiHeader.biClrUsed * sizeof(RGBQUAD); memcpy( colorptr, src->bmiColors, size ); } } } const RGBQUAD *get_default_color_table( int bpp ) { static const RGBQUAD table_1[2] = { { 0x00, 0x00, 0x00 }, { 0xff, 0xff, 0xff } }; static const RGBQUAD table_4[16] = { { 0x00, 0x00, 0x00 }, { 0x00, 0x00, 0x80 }, { 0x00, 0x80, 0x00 }, { 0x00, 0x80, 0x80 }, { 0x80, 0x00, 0x00 }, { 0x80, 0x00, 0x80 }, { 0x80, 0x80, 0x00 }, { 0x80, 0x80, 0x80 }, { 0xc0, 0xc0, 0xc0 }, { 0x00, 0x00, 0xff }, { 0x00, 0xff, 0x00 }, { 0x00, 0xff, 0xff }, { 0xff, 0x00, 0x00 }, { 0xff, 0x00, 0xff }, { 0xff, 0xff, 0x00 }, { 0xff, 0xff, 0xff }, }; static const RGBQUAD table_8[256] = { /* first and last 10 entries are the default system palette entries */ { 0x00, 0x00, 0x00 }, { 0x00, 0x00, 0x80 }, { 0x00, 0x80, 0x00 }, { 0x00, 0x80, 0x80 }, { 0x80, 0x00, 0x00 }, { 0x80, 0x00, 0x80 }, { 0x80, 0x80, 0x00 }, { 0xc0, 0xc0, 0xc0 }, { 0xc0, 0xdc, 0xc0 }, { 0xf0, 0xca, 0xa6 }, { 0x00, 0x20, 0x40 }, { 0x00, 0x20, 0x60 }, { 0x00, 0x20, 0x80 }, { 0x00, 0x20, 0xa0 }, { 0x00, 0x20, 0xc0 }, { 0x00, 0x20, 0xe0 }, { 0x00, 0x40, 0x00 }, { 0x00, 0x40, 0x20 }, { 0x00, 0x40, 0x40 }, { 0x00, 0x40, 0x60 }, { 0x00, 0x40, 0x80 }, { 0x00, 0x40, 0xa0 }, { 0x00, 0x40, 0xc0 }, { 0x00, 0x40, 0xe0 }, { 0x00, 0x60, 0x00 }, { 0x00, 0x60, 0x20 }, { 0x00, 0x60, 0x40 }, { 0x00, 0x60, 0x60 }, { 0x00, 0x60, 0x80 }, { 0x00, 0x60, 0xa0 }, { 0x00, 0x60, 0xc0 }, { 0x00, 0x60, 0xe0 }, { 0x00, 0x80, 0x00 }, { 0x00, 0x80, 0x20 }, { 0x00, 0x80, 0x40 }, { 0x00, 0x80, 0x60 }, { 0x00, 0x80, 0x80 }, { 0x00, 0x80, 0xa0 }, { 0x00, 0x80, 0xc0 }, { 0x00, 0x80, 0xe0 }, { 0x00, 0xa0, 0x00 }, { 0x00, 0xa0, 0x20 }, { 0x00, 0xa0, 0x40 }, { 0x00, 0xa0, 0x60 }, { 0x00, 0xa0, 0x80 }, { 0x00, 0xa0, 0xa0 }, { 0x00, 0xa0, 0xc0 }, { 0x00, 0xa0, 0xe0 }, { 0x00, 0xc0, 0x00 }, { 0x00, 0xc0, 0x20 }, { 0x00, 0xc0, 0x40 }, { 0x00, 0xc0, 0x60 }, { 0x00, 0xc0, 0x80 }, { 0x00, 0xc0, 0xa0 }, { 0x00, 0xc0, 0xc0 }, { 0x00, 0xc0, 0xe0 }, { 0x00, 0xe0, 0x00 }, { 0x00, 0xe0, 0x20 }, { 0x00, 0xe0, 0x40 }, { 0x00, 0xe0, 0x60 }, { 0x00, 0xe0, 0x80 }, { 0x00, 0xe0, 0xa0 }, { 0x00, 0xe0, 0xc0 }, { 0x00, 0xe0, 0xe0 }, { 0x40, 0x00, 0x00 }, { 0x40, 0x00, 0x20 }, { 0x40, 0x00, 0x40 }, { 0x40, 0x00, 0x60 }, { 0x40, 0x00, 0x80 }, { 0x40, 0x00, 0xa0 }, { 0x40, 0x00, 0xc0 }, { 0x40, 0x00, 0xe0 }, { 0x40, 0x20, 0x00 }, { 0x40, 0x20, 0x20 }, { 0x40, 0x20, 0x40 }, { 0x40, 0x20, 0x60 }, { 0x40, 0x20, 0x80 }, { 0x40, 0x20, 0xa0 }, { 0x40, 0x20, 0xc0 }, { 0x40, 0x20, 0xe0 }, { 0x40, 0x40, 0x00 }, { 0x40, 0x40, 0x20 }, { 0x40, 0x40, 0x40 }, { 0x40, 0x40, 0x60 }, { 0x40, 0x40, 0x80 }, { 0x40, 0x40, 0xa0 }, { 0x40, 0x40, 0xc0 }, { 0x40, 0x40, 0xe0 }, { 0x40, 0x60, 0x00 }, { 0x40, 0x60, 0x20 }, { 0x40, 0x60, 0x40 }, { 0x40, 0x60, 0x60 }, { 0x40, 0x60, 0x80 }, { 0x40, 0x60, 0xa0 }, { 0x40, 0x60, 0xc0 }, { 0x40, 0x60, 0xe0 }, { 0x40, 0x80, 0x00 }, { 0x40, 0x80, 0x20 }, { 0x40, 0x80, 0x40 }, { 0x40, 0x80, 0x60 }, { 0x40, 0x80, 0x80 }, { 0x40, 0x80, 0xa0 }, { 0x40, 0x80, 0xc0 }, { 0x40, 0x80, 0xe0 }, { 0x40, 0xa0, 0x00 }, { 0x40, 0xa0, 0x20 }, { 0x40, 0xa0, 0x40 }, { 0x40, 0xa0, 0x60 }, { 0x40, 0xa0, 0x80 }, { 0x40, 0xa0, 0xa0 }, { 0x40, 0xa0, 0xc0 }, { 0x40, 0xa0, 0xe0 }, { 0x40, 0xc0, 0x00 }, { 0x40, 0xc0, 0x20 }, { 0x40, 0xc0, 0x40 }, { 0x40, 0xc0, 0x60 }, { 0x40, 0xc0, 0x80 }, { 0x40, 0xc0, 0xa0 }, { 0x40, 0xc0, 0xc0 }, { 0x40, 0xc0, 0xe0 }, { 0x40, 0xe0, 0x00 }, { 0x40, 0xe0, 0x20 }, { 0x40, 0xe0, 0x40 }, { 0x40, 0xe0, 0x60 }, { 0x40, 0xe0, 0x80 }, { 0x40, 0xe0, 0xa0 }, { 0x40, 0xe0, 0xc0 }, { 0x40, 0xe0, 0xe0 }, { 0x80, 0x00, 0x00 }, { 0x80, 0x00, 0x20 }, { 0x80, 0x00, 0x40 }, { 0x80, 0x00, 0x60 }, { 0x80, 0x00, 0x80 }, { 0x80, 0x00, 0xa0 }, { 0x80, 0x00, 0xc0 }, { 0x80, 0x00, 0xe0 }, { 0x80, 0x20, 0x00 }, { 0x80, 0x20, 0x20 }, { 0x80, 0x20, 0x40 }, { 0x80, 0x20, 0x60 }, { 0x80, 0x20, 0x80 }, { 0x80, 0x20, 0xa0 }, { 0x80, 0x20, 0xc0 }, { 0x80, 0x20, 0xe0 }, { 0x80, 0x40, 0x00 }, { 0x80, 0x40, 0x20 }, { 0x80, 0x40, 0x40 }, { 0x80, 0x40, 0x60 }, { 0x80, 0x40, 0x80 }, { 0x80, 0x40, 0xa0 }, { 0x80, 0x40, 0xc0 }, { 0x80, 0x40, 0xe0 }, { 0x80, 0x60, 0x00 }, { 0x80, 0x60, 0x20 }, { 0x80, 0x60, 0x40 }, { 0x80, 0x60, 0x60 }, { 0x80, 0x60, 0x80 }, { 0x80, 0x60, 0xa0 }, { 0x80, 0x60, 0xc0 }, { 0x80, 0x60, 0xe0 }, { 0x80, 0x80, 0x00 }, { 0x80, 0x80, 0x20 }, { 0x80, 0x80, 0x40 }, { 0x80, 0x80, 0x60 }, { 0x80, 0x80, 0x80 }, { 0x80, 0x80, 0xa0 }, { 0x80, 0x80, 0xc0 }, { 0x80, 0x80, 0xe0 }, { 0x80, 0xa0, 0x00 }, { 0x80, 0xa0, 0x20 }, { 0x80, 0xa0, 0x40 }, { 0x80, 0xa0, 0x60 }, { 0x80, 0xa0, 0x80 }, { 0x80, 0xa0, 0xa0 }, { 0x80, 0xa0, 0xc0 }, { 0x80, 0xa0, 0xe0 }, { 0x80, 0xc0, 0x00 }, { 0x80, 0xc0, 0x20 }, { 0x80, 0xc0, 0x40 }, { 0x80, 0xc0, 0x60 }, { 0x80, 0xc0, 0x80 }, { 0x80, 0xc0, 0xa0 }, { 0x80, 0xc0, 0xc0 }, { 0x80, 0xc0, 0xe0 }, { 0x80, 0xe0, 0x00 }, { 0x80, 0xe0, 0x20 }, { 0x80, 0xe0, 0x40 }, { 0x80, 0xe0, 0x60 }, { 0x80, 0xe0, 0x80 }, { 0x80, 0xe0, 0xa0 }, { 0x80, 0xe0, 0xc0 }, { 0x80, 0xe0, 0xe0 }, { 0xc0, 0x00, 0x00 }, { 0xc0, 0x00, 0x20 }, { 0xc0, 0x00, 0x40 }, { 0xc0, 0x00, 0x60 }, { 0xc0, 0x00, 0x80 }, { 0xc0, 0x00, 0xa0 }, { 0xc0, 0x00, 0xc0 }, { 0xc0, 0x00, 0xe0 }, { 0xc0, 0x20, 0x00 }, { 0xc0, 0x20, 0x20 }, { 0xc0, 0x20, 0x40 }, { 0xc0, 0x20, 0x60 }, { 0xc0, 0x20, 0x80 }, { 0xc0, 0x20, 0xa0 }, { 0xc0, 0x20, 0xc0 }, { 0xc0, 0x20, 0xe0 }, { 0xc0, 0x40, 0x00 }, { 0xc0, 0x40, 0x20 }, { 0xc0, 0x40, 0x40 }, { 0xc0, 0x40, 0x60 }, { 0xc0, 0x40, 0x80 }, { 0xc0, 0x40, 0xa0 }, { 0xc0, 0x40, 0xc0 }, { 0xc0, 0x40, 0xe0 }, { 0xc0, 0x60, 0x00 }, { 0xc0, 0x60, 0x20 }, { 0xc0, 0x60, 0x40 }, { 0xc0, 0x60, 0x60 }, { 0xc0, 0x60, 0x80 }, { 0xc0, 0x60, 0xa0 }, { 0xc0, 0x60, 0xc0 }, { 0xc0, 0x60, 0xe0 }, { 0xc0, 0x80, 0x00 }, { 0xc0, 0x80, 0x20 }, { 0xc0, 0x80, 0x40 }, { 0xc0, 0x80, 0x60 }, { 0xc0, 0x80, 0x80 }, { 0xc0, 0x80, 0xa0 }, { 0xc0, 0x80, 0xc0 }, { 0xc0, 0x80, 0xe0 }, { 0xc0, 0xa0, 0x00 }, { 0xc0, 0xa0, 0x20 }, { 0xc0, 0xa0, 0x40 }, { 0xc0, 0xa0, 0x60 }, { 0xc0, 0xa0, 0x80 }, { 0xc0, 0xa0, 0xa0 }, { 0xc0, 0xa0, 0xc0 }, { 0xc0, 0xa0, 0xe0 }, { 0xc0, 0xc0, 0x00 }, { 0xc0, 0xc0, 0x20 }, { 0xc0, 0xc0, 0x40 }, { 0xc0, 0xc0, 0x60 }, { 0xc0, 0xc0, 0x80 }, { 0xc0, 0xc0, 0xa0 }, { 0xf0, 0xfb, 0xff }, { 0xa4, 0xa0, 0xa0 }, { 0x80, 0x80, 0x80 }, { 0x00, 0x00, 0xff }, { 0x00, 0xff, 0x00 }, { 0x00, 0xff, 0xff }, { 0xff, 0x00, 0x00 }, { 0xff, 0x00, 0xff }, { 0xff, 0xff, 0x00 }, { 0xff, 0xff, 0xff }, }; switch (bpp) { case 1: return table_1; case 4: return table_4; case 8: return table_8; default: return NULL; } } void fill_default_color_table( BITMAPINFO *info ) { info->bmiHeader.biClrUsed = 1 << info->bmiHeader.biBitCount; memcpy( info->bmiColors, get_default_color_table( info->bmiHeader.biBitCount ), info->bmiHeader.biClrUsed * sizeof(RGBQUAD) ); } void get_ddb_bitmapinfo( BITMAPOBJ *bmp, BITMAPINFO *info ) { info->bmiHeader.biSize = sizeof(info->bmiHeader); info->bmiHeader.biWidth = bmp->dib.dsBm.bmWidth; info->bmiHeader.biHeight = -bmp->dib.dsBm.bmHeight; info->bmiHeader.biPlanes = 1; info->bmiHeader.biBitCount = bmp->dib.dsBm.bmBitsPixel; info->bmiHeader.biCompression = BI_RGB; info->bmiHeader.biXPelsPerMeter = 0; info->bmiHeader.biYPelsPerMeter = 0; info->bmiHeader.biClrUsed = 0; info->bmiHeader.biClrImportant = 0; } BITMAPINFO *copy_packed_dib( const BITMAPINFO *src_info, UINT usage ) { char buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; BITMAPINFO *ret, *info = (BITMAPINFO *)buffer; unsigned int info_size; if (!bitmapinfo_from_user_bitmapinfo( info, src_info, usage, FALSE )) return NULL; info_size = get_dib_info_size( info, usage ); if ((ret = HeapAlloc( GetProcessHeap(), 0, info_size + info->bmiHeader.biSizeImage ))) { memcpy( ret, info, info_size ); memcpy( (char *)ret + info_size, (char *)src_info + bitmap_info_size( src_info, usage ), info->bmiHeader.biSizeImage ); } return ret; } /****************************************************************************** * GetDIBits [GDI32.@] * * Retrieves bits of bitmap and copies to buffer. * * RETURNS * Success: Number of scan lines copied from bitmap * Failure: 0 */ INT WINAPI GetDIBits( HDC hdc, /* [in] Handle to device context */ HBITMAP hbitmap, /* [in] Handle to bitmap */ UINT startscan, /* [in] First scan line to set in dest bitmap */ UINT lines, /* [in] Number of scan lines to copy */ LPVOID bits, /* [out] Address of array for bitmap bits */ BITMAPINFO * info, /* [out] Address of structure with bitmap data */ UINT coloruse) /* [in] RGB or palette index */ { DC * dc; BITMAPOBJ * bmp; int i, dst_to_src_offset, ret = 0; DWORD err; char dst_bmibuf[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; BITMAPINFO *dst_info = (BITMAPINFO *)dst_bmibuf; char src_bmibuf[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; BITMAPINFO *src_info = (BITMAPINFO *)src_bmibuf; struct gdi_image_bits src_bits; struct bitblt_coords src, dst; BOOL empty_rect = FALSE; /* Since info may be a BITMAPCOREINFO or any of the larger BITMAPINFO structures, we'll use our own copy and transfer the colour info back at the end */ if (!bitmapinfoheader_from_user_bitmapinfo( &dst_info->bmiHeader, &info->bmiHeader )) return 0; if (coloruse > DIB_PAL_COLORS) return 0; if (bits && (dst_info->bmiHeader.biCompression == BI_JPEG || dst_info->bmiHeader.biCompression == BI_PNG)) return 0; dst_info->bmiHeader.biClrUsed = 0; dst_info->bmiHeader.biClrImportant = 0; if (!(dc = get_dc_ptr( hdc ))) { SetLastError( ERROR_INVALID_PARAMETER ); return 0; } update_dc( dc ); if (!(bmp = GDI_GetObjPtr( hbitmap, OBJ_BITMAP ))) { release_dc_ptr( dc ); return 0; } src.visrect.left = 0; src.visrect.top = 0; src.visrect.right = bmp->dib.dsBm.bmWidth; src.visrect.bottom = bmp->dib.dsBm.bmHeight; dst.visrect.left = 0; dst.visrect.top = 0; dst.visrect.right = dst_info->bmiHeader.biWidth; dst.visrect.bottom = abs( dst_info->bmiHeader.biHeight ); if (lines == 0 || startscan >= dst.visrect.bottom) bits = NULL; if (!bits && dst_info->bmiHeader.biBitCount == 0) /* query bitmap info only */ { ret = fill_query_info( info, bmp ); goto done; } /* validate parameters */ if (dst_info->bmiHeader.biWidth <= 0) goto done; if (dst_info->bmiHeader.biHeight == 0) goto done; switch (dst_info->bmiHeader.biCompression) { case BI_RLE4: if (dst_info->bmiHeader.biBitCount != 4) goto done; if (dst_info->bmiHeader.biHeight < 0) goto done; if (bits) goto done; /* can't retrieve compressed bits */ break; case BI_RLE8: if (dst_info->bmiHeader.biBitCount != 8) goto done; if (dst_info->bmiHeader.biHeight < 0) goto done; if (bits) goto done; /* can't retrieve compressed bits */ break; case BI_BITFIELDS: if (dst_info->bmiHeader.biBitCount != 16 && dst_info->bmiHeader.biBitCount != 32) goto done; /* fall through */ case BI_RGB: if (lines && !dst_info->bmiHeader.biPlanes) goto done; if (dst_info->bmiHeader.biBitCount == 1) break; if (dst_info->bmiHeader.biBitCount == 4) break; if (dst_info->bmiHeader.biBitCount == 8) break; if (dst_info->bmiHeader.biBitCount == 16) break; if (dst_info->bmiHeader.biBitCount == 24) break; if (dst_info->bmiHeader.biBitCount == 32) break; /* fall through */ default: goto done; } if (bits) { if (dst_info->bmiHeader.biHeight > 0) { dst_to_src_offset = -startscan; lines = min( lines, dst.visrect.bottom - startscan ); if (lines < dst.visrect.bottom) dst.visrect.top = dst.visrect.bottom - lines; } else { dst_to_src_offset = dst.visrect.bottom - lines - startscan; if (dst_to_src_offset < 0) { dst_to_src_offset = 0; lines = dst.visrect.bottom - startscan; } if (lines < dst.visrect.bottom) dst.visrect.bottom = lines; } offset_rect( &dst.visrect, 0, dst_to_src_offset ); empty_rect = !intersect_rect( &src.visrect, &src.visrect, &dst.visrect ); dst.visrect = src.visrect; offset_rect( &dst.visrect, 0, -dst_to_src_offset ); if (dst_info->bmiHeader.biHeight > 0) { if (dst.visrect.bottom < dst_info->bmiHeader.biHeight) { int pad_lines = min( dst_info->bmiHeader.biHeight - dst.visrect.bottom, lines ); int pad_bytes = pad_lines * get_dib_stride( dst_info->bmiHeader.biWidth, dst_info->bmiHeader.biBitCount ); memset( bits, 0, pad_bytes ); bits = (char *)bits + pad_bytes; } } else { if (dst.visrect.bottom < lines) { int pad_lines = lines - dst.visrect.bottom; int stride = get_dib_stride( dst_info->bmiHeader.biWidth, dst_info->bmiHeader.biBitCount ); int pad_bytes = pad_lines * stride; memset( (char *)bits + dst.visrect.bottom * stride, 0, pad_bytes ); } } if (empty_rect) bits = NULL; src.x = src.visrect.left; src.y = src.visrect.top; src.width = src.visrect.right - src.visrect.left; src.height = src.visrect.bottom - src.visrect.top; lines = src.height; } err = get_image_from_bitmap( bmp, src_info, bits ? &src_bits : NULL, bits ? &src : NULL ); if (err) goto done; /* fill out the src colour table, if it needs one */ if (src_info->bmiHeader.biBitCount <= 8 && src_info->bmiHeader.biClrUsed == 0) fill_default_color_table( src_info ); /* if the src and dst are the same depth, copy the colour info across */ if (dst_info->bmiHeader.biBitCount == src_info->bmiHeader.biBitCount && coloruse == DIB_RGB_COLORS ) { switch (src_info->bmiHeader.biBitCount) { case 16: if (src_info->bmiHeader.biCompression == BI_RGB) { src_info->bmiHeader.biCompression = BI_BITFIELDS; memcpy( src_info->bmiColors, bit_fields_555, sizeof(bit_fields_555) ); } break; case 32: if (src_info->bmiHeader.biCompression == BI_RGB) { src_info->bmiHeader.biCompression = BI_BITFIELDS; memcpy( src_info->bmiColors, bit_fields_888, sizeof(bit_fields_888) ); } break; } src_info->bmiHeader.biSizeImage = get_dib_image_size( dst_info ); copy_color_info( dst_info, src_info, coloruse ); } else if (dst_info->bmiHeader.biBitCount <= 8) /* otherwise construct a default colour table for the dst, if needed */ { if( coloruse == DIB_PAL_COLORS ) { if (!fill_color_table_from_palette( dst_info, hdc )) goto done; } else { fill_default_color_table( dst_info ); } } if (bits) { if(dst_info->bmiHeader.biHeight > 0) dst_info->bmiHeader.biHeight = src.height; else dst_info->bmiHeader.biHeight = -src.height; convert_bitmapinfo( src_info, src_bits.ptr, &src, dst_info, bits ); if (src_bits.free) src_bits.free( &src_bits ); ret = lines; } else ret = !empty_rect; if (coloruse == DIB_PAL_COLORS) { WORD *index = (WORD *)dst_info->bmiColors; for (i = 0; i < dst_info->bmiHeader.biClrUsed; i++, index++) *index = i; } copy_color_info( info, dst_info, coloruse ); if (info->bmiHeader.biSize != sizeof(BITMAPCOREHEADER)) info->bmiHeader.biClrUsed = 0; done: release_dc_ptr( dc ); GDI_ReleaseObj( hbitmap ); return ret; } /*********************************************************************** * CreateDIBitmap (GDI32.@) * * Creates a DDB (device dependent bitmap) from a DIB. * The DDB will have the same color depth as the reference DC. */ HBITMAP WINAPI CreateDIBitmap( HDC hdc, const BITMAPINFOHEADER *header, DWORD init, LPCVOID bits, const BITMAPINFO *data, UINT coloruse ) { BITMAPINFOHEADER info; HBITMAP handle; LONG height; if (!bitmapinfoheader_from_user_bitmapinfo( &info, header )) return 0; if (info.biCompression == BI_JPEG || info.biCompression == BI_PNG) return 0; if (coloruse > DIB_PAL_COLORS + 1) return 0; if (info.biWidth < 0) return 0; /* Top-down DIBs have a negative height */ height = abs( info.biHeight ); TRACE("hdc=%p, header=%p, init=%u, bits=%p, data=%p, coloruse=%u (bitmap: width=%d, height=%d, bpp=%u, compr=%u)\n", hdc, header, init, bits, data, coloruse, info.biWidth, info.biHeight, info.biBitCount, info.biCompression); if (hdc == NULL) handle = CreateBitmap( info.biWidth, height, 1, 1, NULL ); else handle = CreateCompatibleBitmap( hdc, info.biWidth, height ); if (handle) { if (init & CBM_INIT) { if (SetDIBits( hdc, handle, 0, height, bits, data, coloruse ) == 0) { DeleteObject( handle ); handle = 0; } } } return handle; } /*********************************************************************** * CreateDIBSection (GDI32.@) */ HBITMAP WINAPI CreateDIBSection(HDC hdc, const BITMAPINFO *bmi, UINT usage, VOID **bits, HANDLE section, DWORD offset) { char buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; BITMAPINFO *info = (BITMAPINFO *)buffer; HBITMAP ret = 0; BITMAPOBJ *bmp; void *mapBits = NULL; if (bits) *bits = NULL; if (!bitmapinfo_from_user_bitmapinfo( info, bmi, usage, FALSE )) return 0; if (usage > DIB_PAL_COLORS) return 0; if (info->bmiHeader.biPlanes != 1) { if (info->bmiHeader.biPlanes * info->bmiHeader.biBitCount > 16) return 0; WARN( "%u planes not properly supported\n", info->bmiHeader.biPlanes ); } if (!(bmp = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*bmp) ))) return 0; TRACE("format (%d,%d), planes %d, bpp %d, %s, size %d %s\n", info->bmiHeader.biWidth, info->bmiHeader.biHeight, info->bmiHeader.biPlanes, info->bmiHeader.biBitCount, info->bmiHeader.biCompression == BI_BITFIELDS? "BI_BITFIELDS" : "BI_RGB", info->bmiHeader.biSizeImage, usage == DIB_PAL_COLORS? "PAL" : "RGB"); bmp->dib.dsBm.bmType = 0; bmp->dib.dsBm.bmWidth = info->bmiHeader.biWidth; bmp->dib.dsBm.bmHeight = abs( info->bmiHeader.biHeight ); bmp->dib.dsBm.bmWidthBytes = get_dib_stride( info->bmiHeader.biWidth, info->bmiHeader.biBitCount ); bmp->dib.dsBm.bmPlanes = info->bmiHeader.biPlanes; bmp->dib.dsBm.bmBitsPixel = info->bmiHeader.biBitCount; bmp->dib.dsBmih = info->bmiHeader; if (info->bmiHeader.biBitCount <= 8) /* build the color table */ { if (usage == DIB_PAL_COLORS && !fill_color_table_from_pal_colors( info, hdc )) goto error; bmp->dib.dsBmih.biClrUsed = info->bmiHeader.biClrUsed; if (!(bmp->color_table = HeapAlloc( GetProcessHeap(), 0, bmp->dib.dsBmih.biClrUsed * sizeof(RGBQUAD) ))) goto error; memcpy( bmp->color_table, info->bmiColors, bmp->dib.dsBmih.biClrUsed * sizeof(RGBQUAD) ); } /* set dsBitfields values */ if (info->bmiHeader.biBitCount == 16 && info->bmiHeader.biCompression == BI_RGB) { bmp->dib.dsBmih.biCompression = BI_BITFIELDS; bmp->dib.dsBitfields[0] = 0x7c00; bmp->dib.dsBitfields[1] = 0x03e0; bmp->dib.dsBitfields[2] = 0x001f; } else if (info->bmiHeader.biCompression == BI_BITFIELDS) { if (usage == DIB_PAL_COLORS) goto error; bmp->dib.dsBitfields[0] = *(const DWORD *)info->bmiColors; bmp->dib.dsBitfields[1] = *((const DWORD *)info->bmiColors + 1); bmp->dib.dsBitfields[2] = *((const DWORD *)info->bmiColors + 2); if (!bmp->dib.dsBitfields[0] || !bmp->dib.dsBitfields[1] || !bmp->dib.dsBitfields[2]) goto error; } else bmp->dib.dsBitfields[0] = bmp->dib.dsBitfields[1] = bmp->dib.dsBitfields[2] = 0; /* get storage location for DIB bits */ if (section) { SYSTEM_INFO SystemInfo; DWORD mapOffset; INT mapSize; GetSystemInfo( &SystemInfo ); mapOffset = offset - (offset % SystemInfo.dwAllocationGranularity); mapSize = bmp->dib.dsBmih.biSizeImage + (offset - mapOffset); mapBits = MapViewOfFile( section, FILE_MAP_ALL_ACCESS, 0, mapOffset, mapSize ); if (mapBits) bmp->dib.dsBm.bmBits = (char *)mapBits + (offset - mapOffset); } else { offset = 0; bmp->dib.dsBm.bmBits = VirtualAlloc( NULL, bmp->dib.dsBmih.biSizeImage, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE ); } bmp->dib.dshSection = section; bmp->dib.dsOffset = offset; if (!bmp->dib.dsBm.bmBits) goto error; if (!(ret = alloc_gdi_handle( bmp, OBJ_BITMAP, &dib_funcs ))) goto error; if (bits) *bits = bmp->dib.dsBm.bmBits; return ret; error: if (section) UnmapViewOfFile( mapBits ); else VirtualFree( bmp->dib.dsBm.bmBits, 0, MEM_RELEASE ); HeapFree( GetProcessHeap(), 0, bmp->color_table ); HeapFree( GetProcessHeap(), 0, bmp ); return 0; } /*********************************************************************** * DIB_SelectObject */ static HGDIOBJ DIB_SelectObject( HGDIOBJ handle, HDC hdc ) { HGDIOBJ ret; BITMAPOBJ *bitmap; DC *dc; PHYSDEV physdev; if (!(dc = get_dc_ptr( hdc ))) return 0; if (GetObjectType( hdc ) != OBJ_MEMDC) { ret = 0; goto done; } ret = dc->hBitmap; if (handle == dc->hBitmap) goto done; /* nothing to do */ if (!(bitmap = GDI_GetObjPtr( handle, OBJ_BITMAP ))) { ret = 0; goto done; } if (GDI_get_ref_count( handle )) { WARN( "Bitmap already selected in another DC\n" ); GDI_ReleaseObj( handle ); ret = 0; goto done; } physdev = GET_DC_PHYSDEV( dc, pSelectBitmap ); if (!physdev->funcs->pSelectBitmap( physdev, handle )) { GDI_ReleaseObj( handle ); ret = 0; } else { dc->hBitmap = handle; GDI_inc_ref_count( handle ); dc->dirty = 0; dc->vis_rect.left = 0; dc->vis_rect.top = 0; dc->vis_rect.right = bitmap->dib.dsBm.bmWidth; dc->vis_rect.bottom = bitmap->dib.dsBm.bmHeight; dc->device_rect = dc->vis_rect; GDI_ReleaseObj( handle ); DC_InitDC( dc ); GDI_dec_ref_count( ret ); } done: release_dc_ptr( dc ); return ret; } /*********************************************************************** * DIB_GetObject */ static INT DIB_GetObject( HGDIOBJ handle, INT count, LPVOID buffer ) { INT ret = 0; BITMAPOBJ *bmp = GDI_GetObjPtr( handle, OBJ_BITMAP ); if (!bmp) return 0; if (!buffer) ret = sizeof(BITMAP); else if (count >= sizeof(DIBSECTION)) { DIBSECTION *dib = buffer; *dib = bmp->dib; dib->dsBmih.biHeight = abs( dib->dsBmih.biHeight ); ret = sizeof(DIBSECTION); } else if (count >= sizeof(BITMAP)) { BITMAP *bitmap = buffer; *bitmap = bmp->dib.dsBm; ret = sizeof(BITMAP); } GDI_ReleaseObj( handle ); return ret; } /*********************************************************************** * DIB_DeleteObject */ static BOOL DIB_DeleteObject( HGDIOBJ handle ) { BITMAPOBJ *bmp; if (!(bmp = free_gdi_handle( handle ))) return FALSE; if (bmp->dib.dshSection) { SYSTEM_INFO SystemInfo; GetSystemInfo( &SystemInfo ); UnmapViewOfFile( (char *)bmp->dib.dsBm.bmBits - (bmp->dib.dsOffset % SystemInfo.dwAllocationGranularity) ); } else VirtualFree( bmp->dib.dsBm.bmBits, 0, MEM_RELEASE ); HeapFree(GetProcessHeap(), 0, bmp->color_table); return HeapFree( GetProcessHeap(), 0, bmp ); }