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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 "SkImageInfo.h" | 9 #include "SkImageInfo.h" |
10 #include "SkStream.h" | 10 #include "SkStream.h" |
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40 /* | 40 /* |
41 * Initiates the Ico decode | 41 * Initiates the Ico decode |
42 */ | 42 */ |
43 Result onGetPixels(const SkImageInfo& dstInfo, void* dst, size_t dstRowBytes
, const Options&, | 43 Result onGetPixels(const SkImageInfo& dstInfo, void* dst, size_t dstRowBytes
, const Options&, |
44 SkPMColor*, int*, int*) override; | 44 SkPMColor*, int*, int*) override; |
45 | 45 |
46 SkEncodedFormat onGetEncodedFormat() const override { | 46 SkEncodedFormat onGetEncodedFormat() const override { |
47 return kICO_SkEncodedFormat; | 47 return kICO_SkEncodedFormat; |
48 } | 48 } |
49 | 49 |
| 50 SkScanlineOrder onGetScanlineOrder() const override; |
| 51 |
50 private: | 52 private: |
51 | 53 |
| 54 Result onStartScanlineDecode(const SkImageInfo& dstInfo, const SkCodec::Opti
ons& options, |
| 55 SkPMColor inputColorPtr[], int* inputColorCount) override; |
| 56 |
| 57 int onGetScanlines(void* dst, int count, size_t rowBytes) override; |
| 58 |
| 59 bool onSkipScanlines(int count) override; |
| 60 |
| 61 SkSampler* getSampler(bool createIfNecessary) override; |
| 62 |
| 63 /* |
| 64 * Searches fEmbeddedCodecs for a codec that matches requestedSize. |
| 65 * The search starts at startIndex and ends when an appropriate codec |
| 66 * is found, or we have reached the end of the array. |
| 67 * |
| 68 * @return the index of the matching codec or -1 if there is no |
| 69 * matching codec between startIndex and the end of |
| 70 * the array. |
| 71 */ |
| 72 int chooseCodec(const SkISize& requestedSize, int startIndex); |
| 73 |
52 /* | 74 /* |
53 * Constructor called by NewFromStream | 75 * Constructor called by NewFromStream |
54 * @param embeddedCodecs codecs for the embedded images, takes ownership | 76 * @param embeddedCodecs codecs for the embedded images, takes ownership |
55 */ | 77 */ |
56 SkIcoCodec(const SkImageInfo& srcInfo, | 78 SkIcoCodec(const SkImageInfo& srcInfo, SkTArray<SkAutoTDelete<SkCodec>, true
>* embeddedCodecs); |
57 SkTArray<SkAutoTDelete<SkCodec>, true>* embeddedCodecs); | |
58 | 79 |
59 SkAutoTDelete<SkTArray<SkAutoTDelete<SkCodec>, true>> | 80 SkAutoTDelete<SkTArray<SkAutoTDelete<SkCodec>, true>> fEmbeddedCodecs; // ow
ned |
60 fEmbeddedCodecs; // owned | 81 |
| 82 // Only used by the scanline decoder. onStartScanlineDecode() will set |
| 83 // fCurrScanlineCodec to one of the fEmbeddedCodecs, if it can find a |
| 84 // codec of the appropriate size. We will use fCurrScanlineCodec for |
| 85 // subsequent calls to onGetScanlines() or onSkipScanlines(). |
| 86 // fCurrScanlineCodec is owned by this class, but should not be an |
| 87 // SkAutoTDelete. It will be deleted by the destructor of fEmbeddedCodecs. |
| 88 SkCodec* fCurrScanlineCodec; |
61 | 89 |
62 typedef SkCodec INHERITED; | 90 typedef SkCodec INHERITED; |
63 }; | 91 }; |
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