commit-bot@chromium.org | b263985 | 2014-05-28 16:01:55 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2014 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "SkImageGenerator.h" |
| 9 | |
| 10 | #ifndef SK_SUPPORT_LEGACY_IMAGEGENERATORAPI |
| 11 | bool SkImageGenerator::getInfo(SkImageInfo* info) { |
| 12 | SkImageInfo dummy; |
| 13 | if (NULL == info) { |
| 14 | info = &dummy; |
| 15 | } |
| 16 | return this->onGetInfo(info); |
| 17 | } |
| 18 | |
| 19 | bool SkImageGenerator::getPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, |
| 20 | SkPMColor ctable[], int* ctableCount) { |
| 21 | // Dummy (out-of-range) value to catch subclasses that forgot to respect ctable params. |
| 22 | int localCTableCount = -1; |
| 23 | int* localCTableCountPtr = NULL; |
| 24 | |
| 25 | if (kIndex_8_SkColorType == info.colorType()) { |
| 26 | if (NULL == ctable || NULL == ctableCount) { |
| 27 | return false; |
| 28 | } |
| 29 | } else { |
| 30 | if (ctableCount) { |
| 31 | *ctableCount = 0; |
| 32 | } |
| 33 | ctableCount = NULL; |
| 34 | ctable = NULL; |
| 35 | } |
| 36 | |
| 37 | if (kUnknown_SkColorType == info.colorType()) { |
| 38 | return false; |
| 39 | } |
| 40 | if (NULL == pixels) { |
| 41 | return false; |
| 42 | } |
| 43 | if (rowBytes < info.minRowBytes()) { |
| 44 | return false; |
| 45 | } |
| 46 | |
| 47 | bool success = this->onGetPixels(info, pixels, rowBytes, ctable, localCTableCountPtr); |
| 48 | |
| 49 | if (success && localCTableCountPtr) { |
| 50 | SkASSERT(localCTableCount >= 0 && localCTableCount <= 256); |
| 51 | if (ctableCount) { |
| 52 | *ctableCount = localCTableCount; |
| 53 | } |
| 54 | } |
| 55 | return success; |
| 56 | } |
| 57 | |
| 58 | bool SkImageGenerator::getPixels(const SkImageInfo& info, void* pixels, size_t rowBytes) { |
| 59 | SkASSERT(kIndex_8_SkColorType != info.colorType()); |
| 60 | if (kIndex_8_SkColorType == info.colorType()) { |
| 61 | return false; |
| 62 | } |
| 63 | return this->getPixels(info, pixels, rowBytes, NULL, NULL); |
| 64 | } |
| 65 | #endif |
| 66 | |
| 67 | ///////////////////////////////////////////////////////////////////////////////////////////// |
| 68 | |
| 69 | SkData* SkImageGenerator::onRefEncodedData() { |
| 70 | return NULL; |
| 71 | } |
| 72 | |
| 73 | bool SkImageGenerator::onGetInfo(SkImageInfo*) { |
| 74 | return false; |
| 75 | } |
| 76 | |
| 77 | bool SkImageGenerator::onGetPixels(const SkImageInfo&, void*, size_t, SkPMColor*, int*) { |
| 78 | return false; |
| 79 | } |