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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 | |
5 | Copyright (c) 2011 - 2015, Intel Corporation. All rights reserved.<BR>\r | |
6 | This program and the accompanying materials are licensed and made available under\r | |
7 | the terms and conditions of the BSD License that accompanies this distribution.\r | |
8 | The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php.\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT 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 | |
23 | typedef 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 | |
32 | LIST_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 | |
52 | EFI_STATUS\r | |
53 | EFIAPI\r | |
54 | DecodeImage (\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 | |
103 | EFI_STATUS\r | |
104 | EFIAPI\r | |
105 | RegisterImageDecoder (\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 | } |