ecbff74945
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Shumin Qiu <shumin.qiu@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19082 6f19259b-4bc3-4df7-8a09-765794883524
273 lines
8.3 KiB
C
273 lines
8.3 KiB
C
/** @file
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This library provides BMP image decoding capability.
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Copyright (c) 2011 - 2015, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available under
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the terms and conditions of the BSD License that accompanies this distribution.
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The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Uefi.h>
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#include <IndustryStandard/Bmp.h>
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#include <Protocol/GraphicsOutput.h>
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#include <Library/BaseLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/DebugLib.h>
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#include <Library/ImageDecoderLib.h>
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/**
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Convert a *.BMP graphics image to a callee allocated GOP blt buffer.
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@param ImageFormat Format of the image file.
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@param BmpImage Pointer to BMP file.
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@param BmpImageSize Number of bytes in BmpImage.
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@param GopBlt Buffer containing GOP version of BmpImage.
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@param GopBltSize Size of GopBlt in bytes.
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@param PixelWidth Width of GopBlt/BmpImage in pixels.
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@param PixelHeight Height of GopBlt/BmpImage in pixels.
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@retval EFI_SUCCESS GopBlt and GopBltSize are returned.
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@retval EFI_INVALID_PARAMETER GopBlt or GopBltSize is NULL.
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@retval EFI_UNSUPPORTED BmpImage is not a valid *.BMP image
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@retval EFI_OUT_OF_RESOURCES No enough buffer to allocate.
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**/
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EFI_STATUS
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EFIAPI
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BmpImageDecoderLibConvertBmpToGopBlt (
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IN IMAGE_FORMAT ImageFormat,
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IN UINT8 *BmpImage,
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IN UINTN BmpImageSize,
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OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL **GopBlt,
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OUT UINTN *GopBltSize,
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OUT UINTN *PixelWidth,
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OUT UINTN *PixelHeight
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)
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{
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UINT8 *Image;
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UINT8 *ImageHeader;
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BMP_IMAGE_HEADER *BmpHeader;
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BMP_COLOR_MAP *BmpColorMap;
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EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer;
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EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Blt;
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UINT64 BltBufferSize;
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UINTN Index;
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UINTN Height;
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UINTN Width;
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UINTN ImageIndex;
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UINT32 DataSizePerLine;
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UINT32 ColorMapNum;
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ASSERT ((GopBlt != NULL) && (GopBltSize != NULL));
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if ((ImageFormat != ImageFormatBmp) && (ImageFormat != ImageFormatUnknown)) {
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return EFI_UNSUPPORTED;
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}
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if (sizeof (BMP_IMAGE_HEADER) > BmpImageSize) {
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return EFI_UNSUPPORTED;
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}
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BmpHeader = (BMP_IMAGE_HEADER *) BmpImage;
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if (BmpHeader->CharB != 'B' || BmpHeader->CharM != 'M') {
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return EFI_UNSUPPORTED;
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}
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//
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// Doesn't support compress.
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//
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if (BmpHeader->CompressionType != 0) {
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return EFI_UNSUPPORTED;
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}
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//
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// Only support BITMAPINFOHEADER format.
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// BITMAPFILEHEADER + BITMAPINFOHEADER = BMP_IMAGE_HEADER
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//
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if (BmpHeader->HeaderSize != sizeof (BMP_IMAGE_HEADER) - OFFSET_OF(BMP_IMAGE_HEADER, HeaderSize)) {
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return EFI_UNSUPPORTED;
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}
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//
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// The data size in each line must be 4 byte alignment.
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//
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DataSizePerLine = ((BmpHeader->PixelWidth * BmpHeader->BitPerPixel + 31) >> 3) & (~0x3);
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BltBufferSize = MultU64x32 (DataSizePerLine, BmpHeader->PixelHeight);
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if (BltBufferSize > (UINT32) ~0) {
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return EFI_INVALID_PARAMETER;
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}
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if ((BmpHeader->Size != BmpImageSize) ||
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(BmpHeader->Size < BmpHeader->ImageOffset) ||
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(BmpHeader->Size - BmpHeader->ImageOffset != BmpHeader->PixelHeight * DataSizePerLine)) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// Calculate Color Map offset in the image.
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//
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Image = BmpImage;
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BmpColorMap = (BMP_COLOR_MAP *) (Image + sizeof (BMP_IMAGE_HEADER));
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if (BmpHeader->ImageOffset < sizeof (BMP_IMAGE_HEADER)) {
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return EFI_INVALID_PARAMETER;
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}
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if (BmpHeader->ImageOffset > sizeof (BMP_IMAGE_HEADER)) {
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switch (BmpHeader->BitPerPixel) {
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case 1:
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ColorMapNum = 2;
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break;
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case 4:
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ColorMapNum = 16;
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break;
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case 8:
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ColorMapNum = 256;
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break;
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default:
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ColorMapNum = 0;
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break;
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}
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//
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// BMP file may has padding data between the bmp header section and the bmp data section.
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//
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if (BmpHeader->ImageOffset - sizeof (BMP_IMAGE_HEADER) < sizeof (BMP_COLOR_MAP) * ColorMapNum) {
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return EFI_INVALID_PARAMETER;
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}
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}
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//
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// Calculate graphics image data address in the image
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//
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Image = ((UINT8 *) BmpImage) + BmpHeader->ImageOffset;
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ImageHeader = Image;
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//
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// Calculate the BltBuffer needed size.
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//
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BltBufferSize = MultU64x32 ((UINT64) BmpHeader->PixelWidth, BmpHeader->PixelHeight);
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//
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// Ensure the BltBufferSize * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL) doesn't overflow
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//
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if (BltBufferSize > DivU64x32 ((UINTN) ~0, sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL))) {
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return EFI_UNSUPPORTED;
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}
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BltBufferSize = MultU64x32 (BltBufferSize, sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL));
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*GopBltSize = (UINTN) BltBufferSize;
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*GopBlt = AllocatePool (*GopBltSize);
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if (*GopBlt == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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*PixelWidth = BmpHeader->PixelWidth;
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*PixelHeight = BmpHeader->PixelHeight;
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//
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// Convert image from BMP to Blt buffer format
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//
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BltBuffer = *GopBlt;
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for (Height = 0; Height < BmpHeader->PixelHeight; Height++) {
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Blt = &BltBuffer[(BmpHeader->PixelHeight - Height - 1) * BmpHeader->PixelWidth];
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for (Width = 0; Width < BmpHeader->PixelWidth; Width++, Image++, Blt++) {
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switch (BmpHeader->BitPerPixel) {
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case 1:
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//
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// Convert 1-bit (2 colors) BMP to 24-bit color
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//
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for (Index = 0; Index < 8 && Width < BmpHeader->PixelWidth; Index++) {
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Blt->Red = BmpColorMap[((*Image) >> (7 - Index)) & 0x1].Red;
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Blt->Green = BmpColorMap[((*Image) >> (7 - Index)) & 0x1].Green;
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Blt->Blue = BmpColorMap[((*Image) >> (7 - Index)) & 0x1].Blue;
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Blt++;
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Width++;
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}
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Blt--;
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Width--;
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break;
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case 4:
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//
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// Convert 4-bit (16 colors) BMP Palette to 24-bit color
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//
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Index = (*Image) >> 4;
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Blt->Red = BmpColorMap[Index].Red;
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Blt->Green = BmpColorMap[Index].Green;
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Blt->Blue = BmpColorMap[Index].Blue;
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if (Width < (BmpHeader->PixelWidth - 1)) {
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Blt++;
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Width++;
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Index = (*Image) & 0x0f;
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Blt->Red = BmpColorMap[Index].Red;
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Blt->Green = BmpColorMap[Index].Green;
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Blt->Blue = BmpColorMap[Index].Blue;
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}
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break;
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case 8:
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//
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// Convert 8-bit (256 colors) BMP Palette to 24-bit color
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//
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Blt->Red = BmpColorMap[*Image].Red;
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Blt->Green = BmpColorMap[*Image].Green;
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Blt->Blue = BmpColorMap[*Image].Blue;
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break;
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case 24:
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//
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// It is 24-bit BMP.
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//
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Blt->Blue = *Image++;
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Blt->Green = *Image++;
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Blt->Red = *Image;
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break;
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default:
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//
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// Other bit format BMP is not supported.
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//
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return EFI_UNSUPPORTED;
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break;
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};
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}
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ImageIndex = (UINTN) (Image - ImageHeader);
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if ((ImageIndex % 4) != 0) {
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//
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// Bmp Image starts each row on a 32-bit boundary!
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//
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Image = Image + (4 - (ImageIndex % 4));
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}
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}
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return EFI_SUCCESS;
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}
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/**
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Initialize BmpImageDecoderLib library.
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@param ImageHandle The image handle.
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@param SystemTable The system table.
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@retval EFI_SUCCESS The BmpImageDecoderLib library is initialized correctly.
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@return Other value if failed to initialize the BmpImageDecoderLib library.
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**/
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EFI_STATUS
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EFIAPI
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BmpImageDecoderLibConstructor (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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RegisterImageDecoder (BmpImageDecoderLibConvertBmpToGopBlt);
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return EFI_SUCCESS;
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}
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