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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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| 45 !memcmp(buffer, kBmpMagic, sizeof(kBmpMagic)); | 45 !memcmp(buffer, kBmpMagic, sizeof(kBmpMagic)); |
| 46 } | 46 } |
| 47 | 47 |
| 48 static SkImageDecoder* sk_libbmp_dfactory(SkStream* stream) { | 48 static SkImageDecoder* sk_libbmp_dfactory(SkStream* stream) { |
| 49 if (is_bmp(stream)) { | 49 if (is_bmp(stream)) { |
| 50 return SkNEW(SkBMPImageDecoder); | 50 return SkNEW(SkBMPImageDecoder); |
| 51 } | 51 } |
| 52 return NULL; | 52 return NULL; |
| 53 } | 53 } |
| 54 | 54 |
| 55 static SkTRegistry<SkImageDecoder*, SkStream*> gReg(sk_libbmp_dfactory); | 55 static SkTRegistry<SkImageDecoder*(*)(SkStream*)> gReg(sk_libbmp_dfactory); |
| 56 | 56 |
| 57 static SkImageDecoder::Format get_format_bmp(SkStream* stream) { | 57 static SkImageDecoder::Format get_format_bmp(SkStream* stream) { |
| 58 if (is_bmp(stream)) { | 58 if (is_bmp(stream)) { |
| 59 return SkImageDecoder::kBMP_Format; | 59 return SkImageDecoder::kBMP_Format; |
| 60 } | 60 } |
| 61 return SkImageDecoder::kUnknown_Format; | 61 return SkImageDecoder::kUnknown_Format; |
| 62 } | 62 } |
| 63 | 63 |
| 64 static SkTRegistry<SkImageDecoder::Format, SkStream*> gFormatReg(get_format_bmp)
; | 64 static SkTRegistry<SkImageDecoder::Format(*)(SkStream*)> gFormatReg(get_format_b
mp); |
| 65 | 65 |
| 66 /////////////////////////////////////////////////////////////////////////////// | 66 /////////////////////////////////////////////////////////////////////////////// |
| 67 | 67 |
| 68 class SkBmpDecoderCallback : public image_codec::BmpDecoderCallback { | 68 class SkBmpDecoderCallback : public image_codec::BmpDecoderCallback { |
| 69 public: | 69 public: |
| 70 // we don't copy the bitmap, just remember the pointer | 70 // we don't copy the bitmap, just remember the pointer |
| 71 SkBmpDecoderCallback(bool justBounds) : fJustBounds(justBounds) {} | 71 SkBmpDecoderCallback(bool justBounds) : fJustBounds(justBounds) {} |
| 72 | 72 |
| 73 // override from BmpDecoderCallback | 73 // override from BmpDecoderCallback |
| 74 virtual uint8* SetSize(int width, int height) { | 74 virtual uint8* SetSize(int width, int height) { |
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| 155 const int dstHeight = sampler.scaledHeight(); | 155 const int dstHeight = sampler.scaledHeight(); |
| 156 const uint8_t* srcRow = callback.rgb(); | 156 const uint8_t* srcRow = callback.rgb(); |
| 157 | 157 |
| 158 srcRow += sampler.srcY0() * srcRowBytes; | 158 srcRow += sampler.srcY0() * srcRowBytes; |
| 159 for (int y = 0; y < dstHeight; y++) { | 159 for (int y = 0; y < dstHeight; y++) { |
| 160 sampler.next(srcRow); | 160 sampler.next(srcRow); |
| 161 srcRow += sampler.srcDY() * srcRowBytes; | 161 srcRow += sampler.srcDY() * srcRowBytes; |
| 162 } | 162 } |
| 163 return true; | 163 return true; |
| 164 } | 164 } |
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