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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 "SkData.h" | 8 #include "SkData.h" |
9 #include "SkDecodingImageGenerator.h" | 9 #include "SkDecodingImageGenerator.h" |
10 #include "SkImageDecoder.h" | 10 #include "SkImageDecoder.h" |
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132 SkData* DecodingImageGenerator::onRefEncodedData() { | 132 SkData* DecodingImageGenerator::onRefEncodedData() { |
133 // This functionality is used in `gm --serialize` | 133 // This functionality is used in `gm --serialize` |
134 // Does not encode options. | 134 // Does not encode options. |
135 if (NULL == fData) { | 135 if (NULL == fData) { |
136 // TODO(halcanary): SkStreamRewindable needs a refData() function | 136 // TODO(halcanary): SkStreamRewindable needs a refData() function |
137 // which returns a cheap copy of the underlying data. | 137 // which returns a cheap copy of the underlying data. |
138 if (!fStream->rewind()) { | 138 if (!fStream->rewind()) { |
139 return NULL; | 139 return NULL; |
140 } | 140 } |
141 size_t length = fStream->getLength(); | 141 size_t length = fStream->getLength(); |
142 if (0 == length) { | 142 if (length) { |
143 return NULL; | 143 fData = fStream->readIntoData(length); |
144 } | 144 } |
145 fData = SkData::NewUninitialized(length); | |
146 SkCheckResult(fStream->read(fData->writable_data(), length), length); | |
147 } | 145 } |
148 return SkRef(fData); | 146 return SkSafeRef(fData); |
149 } | 147 } |
150 | 148 |
151 bool DecodingImageGenerator::onGetPixels(const SkImageInfo& info, | 149 bool DecodingImageGenerator::onGetPixels(const SkImageInfo& info, |
152 void* pixels, size_t rowBytes, | 150 void* pixels, size_t rowBytes, |
153 SkPMColor ctableEntries[], int* ctableC
ount) { | 151 SkPMColor ctableEntries[], int* ctableC
ount) { |
154 if (fInfo != info) { | 152 if (fInfo != info) { |
155 // The caller has specified a different info. This is an | 153 // The caller has specified a different info. This is an |
156 // error for this kind of SkImageGenerator. Use the Options | 154 // error for this kind of SkImageGenerator. Use the Options |
157 // to change the settings. | 155 // to change the settings. |
158 return false; | 156 return false; |
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275 SkStreamRewindable* stream, | 273 SkStreamRewindable* stream, |
276 const SkDecodingImageGenerator::Options& opts) { | 274 const SkDecodingImageGenerator::Options& opts) { |
277 SkASSERT(stream != NULL); | 275 SkASSERT(stream != NULL); |
278 SkASSERT(stream->unique()); | 276 SkASSERT(stream->unique()); |
279 if ((stream == NULL) || !stream->unique()) { | 277 if ((stream == NULL) || !stream->unique()) { |
280 SkSafeUnref(stream); | 278 SkSafeUnref(stream); |
281 return NULL; | 279 return NULL; |
282 } | 280 } |
283 return CreateDecodingImageGenerator(NULL, stream, opts); | 281 return CreateDecodingImageGenerator(NULL, stream, opts); |
284 } | 282 } |
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