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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2007 The Android Open Source Project | 3 * Copyright 2007 The Android Open Source Project |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #include "bmpdecoderhelper.h" | 10 #include "bmpdecoderhelper.h" |
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41 char buffer[sizeof(kBmpMagic)]; | 41 char buffer[sizeof(kBmpMagic)]; |
42 | 42 |
43 return stream->read(buffer, sizeof(kBmpMagic)) == sizeof(kBmpMagic) && | 43 return stream->read(buffer, sizeof(kBmpMagic)) == sizeof(kBmpMagic) && |
44 !memcmp(buffer, kBmpMagic, sizeof(kBmpMagic)); | 44 !memcmp(buffer, kBmpMagic, sizeof(kBmpMagic)); |
45 } | 45 } |
46 | 46 |
47 static SkImageDecoder* sk_libbmp_dfactory(SkStreamRewindable* stream) { | 47 static SkImageDecoder* sk_libbmp_dfactory(SkStreamRewindable* stream) { |
48 if (is_bmp(stream)) { | 48 if (is_bmp(stream)) { |
49 return new SkBMPImageDecoder; | 49 return new SkBMPImageDecoder; |
50 } | 50 } |
51 return NULL; | 51 return nullptr; |
52 } | 52 } |
53 | 53 |
54 static SkImageDecoder_DecodeReg gReg(sk_libbmp_dfactory); | 54 static SkImageDecoder_DecodeReg gReg(sk_libbmp_dfactory); |
55 | 55 |
56 static SkImageDecoder::Format get_format_bmp(SkStreamRewindable* stream) { | 56 static SkImageDecoder::Format get_format_bmp(SkStreamRewindable* stream) { |
57 if (is_bmp(stream)) { | 57 if (is_bmp(stream)) { |
58 return SkImageDecoder::kBMP_Format; | 58 return SkImageDecoder::kBMP_Format; |
59 } | 59 } |
60 return SkImageDecoder::kUnknown_Format; | 60 return SkImageDecoder::kUnknown_Format; |
61 } | 61 } |
62 | 62 |
63 static SkImageDecoder_FormatReg gFormatReg(get_format_bmp); | 63 static SkImageDecoder_FormatReg gFormatReg(get_format_bmp); |
64 | 64 |
65 /////////////////////////////////////////////////////////////////////////////// | 65 /////////////////////////////////////////////////////////////////////////////// |
66 | 66 |
67 class SkBmpDecoderCallback : public image_codec::BmpDecoderCallback { | 67 class SkBmpDecoderCallback : public image_codec::BmpDecoderCallback { |
68 public: | 68 public: |
69 // we don't copy the bitmap, just remember the pointer | 69 // we don't copy the bitmap, just remember the pointer |
70 SkBmpDecoderCallback(bool justBounds) : fJustBounds(justBounds) {} | 70 SkBmpDecoderCallback(bool justBounds) : fJustBounds(justBounds) {} |
71 | 71 |
72 // override from BmpDecoderCallback | 72 // override from BmpDecoderCallback |
73 virtual uint8* SetSize(int width, int height) { | 73 virtual uint8* SetSize(int width, int height) { |
74 fWidth = width; | 74 fWidth = width; |
75 fHeight = height; | 75 fHeight = height; |
76 if (fJustBounds) { | 76 if (fJustBounds) { |
77 return NULL; | 77 return nullptr; |
78 } | 78 } |
79 | 79 |
80 fRGB.setCount(width * height * 3); // 3 == r, g, b | 80 fRGB.setCount(width * height * 3); // 3 == r, g, b |
81 return fRGB.begin(); | 81 return fRGB.begin(); |
82 } | 82 } |
83 | 83 |
84 int width() const { return fWidth; } | 84 int width() const { return fWidth; } |
85 int height() const { return fHeight; } | 85 int height() const { return fHeight; } |
86 const uint8_t* rgb() const { return fRGB.begin(); } | 86 const uint8_t* rgb() const { return fRGB.begin(); } |
87 | 87 |
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132 | 132 |
133 SkScaledBitmapSampler sampler(width, height, getSampleSize()); | 133 SkScaledBitmapSampler sampler(width, height, getSampleSize()); |
134 | 134 |
135 bm->setInfo(SkImageInfo::Make(sampler.scaledWidth(), sampler.scaledHeight(), | 135 bm->setInfo(SkImageInfo::Make(sampler.scaledWidth(), sampler.scaledHeight(), |
136 colorType, kOpaque_SkAlphaType)); | 136 colorType, kOpaque_SkAlphaType)); |
137 | 137 |
138 if (justBounds) { | 138 if (justBounds) { |
139 return kSuccess; | 139 return kSuccess; |
140 } | 140 } |
141 | 141 |
142 if (!this->allocPixelRef(bm, NULL)) { | 142 if (!this->allocPixelRef(bm, nullptr)) { |
143 return kFailure; | 143 return kFailure; |
144 } | 144 } |
145 | 145 |
146 SkAutoLockPixels alp(*bm); | 146 SkAutoLockPixels alp(*bm); |
147 | 147 |
148 if (!sampler.begin(bm, SkScaledBitmapSampler::kRGB, *this)) { | 148 if (!sampler.begin(bm, SkScaledBitmapSampler::kRGB, *this)) { |
149 return kFailure; | 149 return kFailure; |
150 } | 150 } |
151 | 151 |
152 const int srcRowBytes = width * 3; | 152 const int srcRowBytes = width * 3; |
153 const int dstHeight = sampler.scaledHeight(); | 153 const int dstHeight = sampler.scaledHeight(); |
154 const uint8_t* srcRow = callback.rgb(); | 154 const uint8_t* srcRow = callback.rgb(); |
155 | 155 |
156 srcRow += sampler.srcY0() * srcRowBytes; | 156 srcRow += sampler.srcY0() * srcRowBytes; |
157 for (int y = 0; y < dstHeight; y++) { | 157 for (int y = 0; y < dstHeight; y++) { |
158 sampler.next(srcRow); | 158 sampler.next(srcRow); |
159 srcRow += sampler.srcDY() * srcRowBytes; | 159 srcRow += sampler.srcDY() * srcRowBytes; |
160 } | 160 } |
161 return kSuccess; | 161 return kSuccess; |
162 } | 162 } |
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