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1/** @file\r
2 This library provides image decoding service by managing the different\r
3 image decoding libraries.\r
4\r
5Copyright (c) 2011 - 2015, Intel Corporation. All rights reserved.<BR>\r
6This program and the accompanying materials are licensed and made available under\r
7the terms and conditions of the BSD License that accompanies this distribution.\r
8The full text of the license may be found at\r
9http://opensource.org/licenses/bsd-license.php.\r
10\r
11THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
12WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
13\r
14**/\r
15\r
16#include <Uefi.h>\r
17#include <Protocol/GraphicsOutput.h>\r
18#include <Library/ImageDecoderLib.h>\r
19#include <Library/BaseLib.h>\r
20#include <Library/MemoryAllocationLib.h>\r
21#include <Library/DebugLib.h>\r
22\r
23typedef struct {\r
24 UINT32 Signature;\r
25 DECODE_IMAGE Decoder;\r
26 LIST_ENTRY Link;\r
27} IMAGE_DECODER_ENTRY;\r
28#define IMAGE_DECODER_ENTRY_SIGNATURE SIGNATURE_32 ('i', 'm', 'g', 'd')\r
29#define IMAGE_DECODER_ENTRY_FROM_LINK(Link) \\r
30 CR (Link, IMAGE_DECODER_ENTRY, Link, IMAGE_DECODER_ENTRY_SIGNATURE)\r
31\r
32LIST_ENTRY mImageDecoderLibDecoders = INITIALIZE_LIST_HEAD_VARIABLE (mImageDecoderLibDecoders);\r
33\r
34/**\r
35 Convert a graphics image to a callee allocated GOP blt buffer.\r
36\r
37 @param ImageFormat Format of the image file.\r
38 @param Image Pointer to image file.\r
39 @param ImageSize Number of bytes in Image.\r
40 @param GopBlt Buffer containing GOP version of Image.\r
41 @param GopBltSize Size of GopBlt in bytes.\r
42 @param PixelWidth Width of GopBlt/Image in pixels.\r
43 @param PixelHeight Height of GopBlt/Image in pixels.\r
44\r
45 @retval EFI_SUCCESS GopBlt and GopBltSize are returned.\r
46 @retval EFI_INVALID_PARAMETER GopBlt or GopBltSize is NULL.\r
47 @retval EFI_INVALID_PARAMETER Image is NULL or ImageSize is 0.\r
48 @retval EFI_UNSUPPORTED Image is not supported.\r
49 @retval EFI_OUT_OF_RESOURCES No enough buffer to allocate.\r
50\r
51**/\r
52EFI_STATUS\r
53EFIAPI\r
54DecodeImage (\r
55 IN IMAGE_FORMAT ImageFormat,\r
56 IN UINT8 *Image,\r
57 IN UINTN ImageSize,\r
58 OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL **GopBlt,\r
59 OUT UINTN *GopBltSize,\r
60 OUT UINTN *PixelWidth,\r
61 OUT UINTN *PixelHeight\r
62 )\r
63{\r
64 IMAGE_DECODER_ENTRY *Entry;\r
65 LIST_ENTRY *Link;\r
66 EFI_STATUS Status;\r
67\r
68 if ((GopBlt == NULL) || (GopBltSize == NULL)) {\r
69 return EFI_INVALID_PARAMETER;\r
70 }\r
71\r
72 if ((Image == NULL) || (ImageSize == 0)) {\r
73 return EFI_INVALID_PARAMETER;\r
74 }\r
75\r
76 for ( Link = GetFirstNode (&mImageDecoderLibDecoders)\r
77 ; !IsNull (&mImageDecoderLibDecoders, Link)\r
78 ; Link = GetNextNode (&mImageDecoderLibDecoders, Link)\r
79 ) {\r
80 Entry = IMAGE_DECODER_ENTRY_FROM_LINK (Link);\r
81 Status = Entry->Decoder (ImageFormat, Image, ImageSize, GopBlt, GopBltSize, PixelWidth, PixelHeight);\r
82 if (!EFI_ERROR (Status)) {\r
83 break;\r
84 }\r
85 }\r
86\r
87 if (IsNull (&mImageDecoderLibDecoders, Link)) {\r
88 return EFI_UNSUPPORTED;\r
89 } else {\r
90 return EFI_SUCCESS;\r
91 }\r
92}\r
93\r
94/**\r
95 Register an image decoder.\r
96\r
97 @param Decoder An image decoder.\r
98\r
99 @retval EFI_SUCCESS The decoder was successfully registered.\r
100 @retval EFI_OUT_OF_RESOURCES No enough resource to register the decoder.\r
101\r
102**/\r
103EFI_STATUS\r
104EFIAPI\r
105RegisterImageDecoder (\r
106 IN DECODE_IMAGE Decoder\r
107 )\r
108{\r
109 IMAGE_DECODER_ENTRY *Entry;\r
110\r
111 Entry = AllocatePool (sizeof (IMAGE_DECODER_ENTRY));\r
112 if (Entry == NULL) {\r
113 return EFI_OUT_OF_RESOURCES;\r
114 }\r
115\r
116 Entry->Signature = IMAGE_DECODER_ENTRY_SIGNATURE;\r
117 Entry->Decoder = Decoder;\r
118 InsertTailList (&mImageDecoderLibDecoders, &Entry->Link);\r
119\r
120 return EFI_SUCCESS;\r
121}