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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkCodec.h" | 8 #include "SkCodec.h" |
9 #include "SkColorTable.h" | 9 #include "SkColorTable.h" |
10 #include "SkImageInfo.h" | 10 #include "SkImageInfo.h" |
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79 enum BitmapInputFormat { | 79 enum BitmapInputFormat { |
80 kStandard_BitmapInputFormat, | 80 kStandard_BitmapInputFormat, |
81 kRLE_BitmapInputFormat, | 81 kRLE_BitmapInputFormat, |
82 kBitMask_BitmapInputFormat, | 82 kBitMask_BitmapInputFormat, |
83 kUnknown_BitmapInputFormat | 83 kUnknown_BitmapInputFormat |
84 }; | 84 }; |
85 | 85 |
86 /* | 86 /* |
87 * | 87 * |
88 * Creates the color table | 88 * Creates the color table |
89 * | 89 * Sets colorCount to the new color count if it is non-NULL |
90 */ | 90 */ |
91 bool createColorTable(SkAlphaType alphaType); | 91 bool createColorTable(SkAlphaType alphaType, int* colorCount); |
92 | 92 |
93 /* | 93 /* |
94 * | 94 * |
95 * Creates a bmp decoder | 95 * Creates a bmp decoder |
96 * Reads enough of the stream to determine the image format | 96 * Reads enough of the stream to determine the image format |
97 * | 97 * |
98 */ | 98 */ |
99 static SkCodec* NewFromStream(SkStream*, bool isIco); | 99 static SkCodec* NewFromStream(SkStream*, bool isIco); |
100 | 100 |
101 /* | 101 /* |
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114 * | 114 * |
115 */ | 115 */ |
116 Result decodeMask(const SkImageInfo& dstInfo, void* dst, | 116 Result decodeMask(const SkImageInfo& dstInfo, void* dst, |
117 size_t dstRowBytes); | 117 size_t dstRowBytes); |
118 | 118 |
119 /* | 119 /* |
120 * | 120 * |
121 * Set an RLE pixel using the color table | 121 * Set an RLE pixel using the color table |
122 * | 122 * |
123 */ | 123 */ |
124 void setRLEPixel(SkPMColor* dst, size_t dstRowBytes, | 124 void setRLEPixel(void* dst, size_t dstRowBytes, |
125 const SkImageInfo& dstInfo, uint32_t x, uint32_t y, | 125 const SkImageInfo& dstInfo, uint32_t x, uint32_t y, |
126 uint8_t index); | 126 uint8_t index); |
127 /* | 127 /* |
128 * | 128 * |
129 * Set an RLE24 pixel from R, G, B values | 129 * Set an RLE24 pixel from R, G, B values |
130 * | 130 * |
131 */ | 131 */ |
132 void setRLE24Pixel(SkPMColor* dst, size_t dstRowBytes, | 132 void setRLE24Pixel(void* dst, size_t dstRowBytes, |
133 const SkImageInfo& dstInfo, uint32_t x, uint32_t y, | 133 const SkImageInfo& dstInfo, uint32_t x, uint32_t y, |
134 uint8_t red, uint8_t green, uint8_t blue); | 134 uint8_t red, uint8_t green, uint8_t blue); |
135 | 135 |
136 /* | 136 /* |
137 * | 137 * |
138 * Performs the bitmap decoding for RLE input format | 138 * Performs the bitmap decoding for RLE input format |
139 * | 139 * |
140 */ | 140 */ |
141 Result decodeRLE(const SkImageInfo& dstInfo, void* dst, | 141 Result decodeRLE(const SkImageInfo& dstInfo, void* dst, |
142 size_t dstRowBytes); | 142 size_t dstRowBytes, const Options& opts); |
143 | 143 |
144 /* | 144 /* |
145 * | 145 * |
146 * Performs the bitmap decoding for standard input format | 146 * Performs the bitmap decoding for standard input format |
147 * | 147 * |
148 */ | 148 */ |
149 Result decode(const SkImageInfo& dstInfo, void* dst, size_t dstRowBytes); | 149 Result decode(const SkImageInfo& dstInfo, void* dst, size_t dstRowBytes); |
150 | 150 |
151 /* | 151 /* |
152 * | 152 * |
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174 SkBmpCodec(const SkImageInfo& srcInfo, SkStream* stream, | 174 SkBmpCodec(const SkImageInfo& srcInfo, SkStream* stream, |
175 uint16_t bitsPerPixel, BitmapInputFormat format, | 175 uint16_t bitsPerPixel, BitmapInputFormat format, |
176 SkMasks* masks, uint32_t numColors, uint32_t bytesPerColor, | 176 SkMasks* masks, uint32_t numColors, uint32_t bytesPerColor, |
177 uint32_t offset, RowOrder rowOrder, size_t RLEBytes, | 177 uint32_t offset, RowOrder rowOrder, size_t RLEBytes, |
178 bool isIco); | 178 bool isIco); |
179 | 179 |
180 // Fields | 180 // Fields |
181 const uint16_t fBitsPerPixel; | 181 const uint16_t fBitsPerPixel; |
182 const BitmapInputFormat fInputFormat; | 182 const BitmapInputFormat fInputFormat; |
183 SkAutoTDelete<SkMasks> fMasks; // owned | 183 SkAutoTDelete<SkMasks> fMasks; // owned |
184 SkAutoTDelete<SkColorTable> fColorTable; // owned | 184 SkAutoTUnref<SkColorTable> fColorTable; // owned |
185 uint32_t fNumColors; | 185 uint32_t fNumColors; |
186 const uint32_t fBytesPerColor; | 186 const uint32_t fBytesPerColor; |
187 const uint32_t fOffset; | 187 const uint32_t fOffset; |
188 const RowOrder fRowOrder; | 188 const RowOrder fRowOrder; |
189 const size_t fRLEBytes; | 189 const size_t fRLEBytes; |
190 const bool fIsIco; | 190 const bool fIsIco; |
191 | 191 |
192 typedef SkCodec INHERITED; | 192 typedef SkCodec INHERITED; |
193 }; | 193 }; |
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