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Side by Side Diff: src/codec/SkGifInterlaceIter.h

Issue 1305123002: Scanline decoding for gifs (Closed) Base URL: https://skia.googlesource.com/skia.git@real-bmp-scan
Patch Set: Created 5 years, 4 months ago
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1 /* 1 /*
2 * Copyright 2015 The Android Open Source Project 2 * Copyright 2015 The Android Open Source Project
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 "SkTypes.h" 8 #include "SkTypes.h"
9 9
10 /* 10 /*
11 * Helper class to determine the destination y-values for interlaced gifs 11 * Helper class to determine the destination y-values for interlaced gifs
12 */ 12 */
13 class SkGifInterlaceIter : SkNoncopyable { 13 class SkGifInterlaceIter {
msarett 2015/08/24 23:20:13 I think the scanline decoder needs this to be copy
scroggo 2015/08/27 16:35:50 That is correct.
14 public: 14 public:
15 15
16 explicit SkGifInterlaceIter(int32_t height); 16 explicit SkGifInterlaceIter(int32_t height);
17 17
18 /* 18 /*
19 * Get the next destination y-value 19 * Get the next destination y-value
20 */ 20 */
21 int32_t nextY(); 21 int32_t nextY();
22 22
23 private: 23 private:
24 24
25 /* 25 /*
26 * Updates the iterator to prepare the next y-value 26 * Updates the iterator to prepare the next y-value
27 */ 27 */
28 void prepareY(); 28 void prepareY();
29 29
30 const int32_t fHeight; 30 int32_t fHeight;
31 int32_t fCurrY; 31 int32_t fCurrY;
32 int32_t fDeltaY; 32 int32_t fDeltaY;
33 const uint8_t* fStartYPtr; 33 const uint8_t* fStartYPtr;
34 const uint8_t* fDeltaYPtr; 34 const uint8_t* fDeltaYPtr;
35 }; 35 };
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