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345c2b0713
The library itself doesn't provide any image decoding capabilities but manages the different image decoders. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Feng Tian <feng.tian@intel.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18770 6f19259b-4bc3-4df7-8a09-765794883524
121 lines
3.8 KiB
C
121 lines
3.8 KiB
C
/** @file
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This library provides image decoding service by managing the different
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image decoding libraries.
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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 <Protocol/GraphicsOutput.h>
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#include <Library/ImageDecoderLib.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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typedef struct {
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UINT32 Signature;
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DECODE_IMAGE Decoder;
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LIST_ENTRY Link;
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} IMAGE_DECODER_ENTRY;
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#define IMAGE_DECODER_ENTRY_SIGNATURE SIGNATURE_32 ('i', 'm', 'g', 'd')
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#define IMAGE_DECODER_ENTRY_FROM_LINK(Link) \
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CR (Link, IMAGE_DECODER_ENTRY, Link, IMAGE_DECODER_ENTRY_SIGNATURE)
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LIST_ENTRY mImageDecoderLibDecoders = INITIALIZE_LIST_HEAD_VARIABLE (mImageDecoderLibDecoders);
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/**
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Convert a 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 Image Pointer to image file.
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@param ImageSize Number of bytes in Image.
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@param GopBlt Buffer containing GOP version of Image.
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@param GopBltSize Size of GopBlt in bytes.
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@param PixelWidth Width of GopBlt/Image in pixels.
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@param PixelHeight Height of GopBlt/Image 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_INVALID_PARAMETER Image is NULL or ImageSize is 0.
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@retval EFI_UNSUPPORTED Image is not supported.
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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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DecodeImage (
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IN IMAGE_FORMAT ImageFormat,
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IN UINT8 *Image,
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IN UINTN ImageSize,
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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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IMAGE_DECODER_ENTRY *Entry;
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LIST_ENTRY *Link;
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EFI_STATUS Status;
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if ((GopBlt == NULL) || (GopBltSize == NULL)) {
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return EFI_INVALID_PARAMETER;
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}
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if ((Image == NULL) || (ImageSize == 0)) {
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return EFI_INVALID_PARAMETER;
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}
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for ( Link = GetFirstNode (&mImageDecoderLibDecoders)
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; !IsNull (&mImageDecoderLibDecoders, Link)
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; Link = GetNextNode (&mImageDecoderLibDecoders, Link)
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) {
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Entry = IMAGE_DECODER_ENTRY_FROM_LINK (Link);
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Status = Entry->Decoder (ImageFormat, Image, ImageSize, GopBlt, GopBltSize, PixelWidth, PixelHeight);
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if (!EFI_ERROR (Status)) {
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break;
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}
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}
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if (IsNull (&mImageDecoderLibDecoders, Link)) {
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return EFI_UNSUPPORTED;
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} else {
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return EFI_SUCCESS;
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}
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}
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/**
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Register an image decoder.
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@param Decoder An image decoder.
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@retval EFI_SUCCESS The decoder was successfully registered.
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@retval EFI_OUT_OF_RESOURCES No enough resource to register the decoder.
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**/
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EFI_STATUS
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EFIAPI
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RegisterImageDecoder (
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IN DECODE_IMAGE Decoder
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)
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{
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IMAGE_DECODER_ENTRY *Entry;
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Entry = AllocatePool (sizeof (IMAGE_DECODER_ENTRY));
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if (Entry == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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Entry->Signature = IMAGE_DECODER_ENTRY_SIGNATURE;
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Entry->Decoder = Decoder;
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InsertTailList (&mImageDecoderLibDecoders, &Entry->Link);
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return EFI_SUCCESS;
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} |