155 lines
5.7 KiB
C
155 lines
5.7 KiB
C
/*
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* Copyright (C) 2009 Tony Wasserka
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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*/
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#include "wine/debug.h"
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#include "d3dx9_36_private.h"
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/************************************************************
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* pixel format table providing info about number of bytes per pixel,
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* number of bits per channel and format type.
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*
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* Call get_format_info to request information about a specific format.
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*/
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static const PixelFormatDesc formats[] =
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{
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/* format bits per channel shifts per channel bpp type */
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{ D3DFMT_R8G8B8, { 0, 8, 8, 8 }, { 0, 16, 8, 0 }, 3, FORMAT_ARGB },
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{ D3DFMT_A8R8G8B8, { 8, 8, 8, 8 }, { 24, 16, 8, 0 }, 4, FORMAT_ARGB },
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{ D3DFMT_X8R8G8B8, { 0, 8, 8, 8 }, { 0, 16, 8, 0 }, 4, FORMAT_ARGB },
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{ D3DFMT_A8B8G8R8, { 8, 8, 8, 8 }, { 24, 0, 8, 16 }, 4, FORMAT_ARGB },
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{ D3DFMT_X8B8G8R8, { 0, 8, 8, 8 }, { 0, 0, 8, 16 }, 4, FORMAT_ARGB },
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{ D3DFMT_R5G6B5, { 0, 5, 6, 5 }, { 0, 11, 5, 0 }, 2, FORMAT_ARGB },
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{ D3DFMT_X1R5G5B5, { 0, 5, 5, 5 }, { 0, 10, 5, 0 }, 2, FORMAT_ARGB },
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{ D3DFMT_A1R5G5B5, { 1, 5, 5, 5 }, { 15, 10, 5, 0 }, 2, FORMAT_ARGB },
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{ D3DFMT_R3G3B2, { 0, 3, 3, 2 }, { 0, 5, 2, 0 }, 1, FORMAT_ARGB },
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{ D3DFMT_A8R3G3B2, { 8, 3, 3, 2 }, { 8, 5, 2, 0 }, 2, FORMAT_ARGB },
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{ D3DFMT_A4R4G4B4, { 4, 4, 4, 4 }, { 12, 8, 4, 0 }, 2, FORMAT_ARGB },
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{ D3DFMT_X4R4G4B4, { 0, 4, 4, 4 }, { 0, 8, 4, 0 }, 2, FORMAT_ARGB },
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{ D3DFMT_A2R10G10B10, { 2, 10, 10, 10 }, { 30, 20, 10, 0 }, 4, FORMAT_ARGB },
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{ D3DFMT_A2B10G10R10, { 2, 10, 10, 10 }, { 30, 0, 10, 20 }, 4, FORMAT_ARGB },
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{ D3DFMT_G16R16, { 0, 16, 16, 0 }, { 0, 0, 16, 0 }, 4, FORMAT_ARGB },
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{ D3DFMT_A8, { 8, 0, 0, 0 }, { 0, 0, 0, 0 }, 1, FORMAT_ARGB },
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{ D3DFMT_UNKNOWN, { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, 0, FORMAT_UNKNOWN }, /* marks last element */
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};
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/************************************************************
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* map_view_of_file
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*
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* Loads a file into buffer and stores the number of read bytes in length.
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*
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* PARAMS
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* filename [I] name of the file to be loaded
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* buffer [O] pointer to destination buffer
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* length [O] size of the obtained data
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*
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* RETURNS
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* Success: D3D_OK
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* Failure:
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* see error codes for CreateFileW, GetFileSize, CreateFileMapping and MapViewOfFile
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*
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* NOTES
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* The caller must UnmapViewOfFile when it doesn't need the data anymore
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*
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*/
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HRESULT map_view_of_file(LPCWSTR filename, LPVOID *buffer, DWORD *length)
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{
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HANDLE hfile, hmapping = NULL;
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hfile = CreateFileW(filename, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
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if(hfile == INVALID_HANDLE_VALUE) goto error;
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*length = GetFileSize(hfile, NULL);
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if(*length == INVALID_FILE_SIZE) goto error;
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hmapping = CreateFileMappingW(hfile, NULL, PAGE_READONLY, 0, 0, NULL);
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if(!hmapping) goto error;
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*buffer = MapViewOfFile(hmapping, FILE_MAP_READ, 0, 0, 0);
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if(*buffer == NULL) goto error;
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CloseHandle(hmapping);
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CloseHandle(hfile);
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return S_OK;
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error:
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CloseHandle(hmapping);
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CloseHandle(hfile);
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return HRESULT_FROM_WIN32(GetLastError());
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}
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/************************************************************
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* load_resource_into_memory
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*
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* Loads a resource into buffer and stores the number of
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* read bytes in length.
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*
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* PARAMS
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* module [I] handle to the module
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* resinfo [I] handle to the resource's information block
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* buffer [O] pointer to destination buffer
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* length [O] size of the obtained data
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*
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* RETURNS
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* Success: D3D_OK
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* Failure:
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* See error codes for SizeofResource, LoadResource and LockResource
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*
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* NOTES
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* The memory doesn't need to be freed by the caller manually
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*
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*/
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HRESULT load_resource_into_memory(HMODULE module, HRSRC resinfo, LPVOID *buffer, DWORD *length)
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{
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HGLOBAL resource;
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*length = SizeofResource(module, resinfo);
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if(*length == 0) return HRESULT_FROM_WIN32(GetLastError());
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resource = LoadResource(module, resinfo);
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if( !resource ) return HRESULT_FROM_WIN32(GetLastError());
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*buffer = LockResource(resource);
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if(*buffer == NULL) return HRESULT_FROM_WIN32(GetLastError());
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return S_OK;
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}
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/************************************************************
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* get_format_info
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*
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* Returns information about the specified format.
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* If the format is unsupported, it's filled with the D3DFMT_UNKNOWN desc.
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*
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* PARAMS
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* format [I] format whose description is queried
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* desc [O] pointer to a StaticPixelFormatDesc structure
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*
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*/
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const PixelFormatDesc *get_format_info(D3DFORMAT format)
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{
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unsigned int i = 0;
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while(formats[i].format != format && formats[i].format != D3DFMT_UNKNOWN) i++;
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return &formats[i];
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}
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