| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkImageGenerator.h" |
| |
| bool SkImageGenerator::getPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, |
| SkPMColor ctable[], int* ctableCount) { |
| if (kUnknown_SkColorType == info.colorType()) { |
| return false; |
| } |
| if (NULL == pixels) { |
| return false; |
| } |
| if (rowBytes < info.minRowBytes()) { |
| return false; |
| } |
| |
| if (kIndex_8_SkColorType == info.colorType()) { |
| if (NULL == ctable || NULL == ctableCount) { |
| return false; |
| } |
| } else { |
| if (ctableCount) { |
| *ctableCount = 0; |
| } |
| ctableCount = NULL; |
| ctable = NULL; |
| } |
| |
| #ifdef SK_LEGACY_IMAGE_GENERATOR_ENUMS_AND_OPTIONS |
| // Default options. |
| Options options; |
| const Result result = this->onGetPixels(info, pixels, rowBytes, options, ctable, ctableCount); |
| |
| if (kIncompleteInput != result && kSuccess != result) { |
| return false; |
| } |
| if (ctableCount) { |
| SkASSERT(*ctableCount >= 0 && *ctableCount <= 256); |
| } |
| return true; |
| #else |
| const bool success = this->onGetPixels(info, pixels, rowBytes, ctable, ctableCount); |
| if (success && ctableCount) { |
| SkASSERT(*ctableCount >= 0 && *ctableCount <= 256); |
| } |
| return success; |
| #endif |
| } |
| |
| bool SkImageGenerator::getPixels(const SkImageInfo& info, void* pixels, size_t rowBytes) { |
| SkASSERT(kIndex_8_SkColorType != info.colorType()); |
| if (kIndex_8_SkColorType == info.colorType()) { |
| return false; |
| } |
| return this->getPixels(info, pixels, rowBytes, NULL, NULL); |
| } |
| |
| bool SkImageGenerator::getYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3], |
| SkYUVColorSpace* colorSpace) { |
| #ifdef SK_DEBUG |
| // In all cases, we need the sizes array |
| SkASSERT(sizes); |
| |
| bool isValidWithPlanes = (planes) && (rowBytes) && |
| ((planes[0]) && (planes[1]) && (planes[2]) && |
| (0 != rowBytes[0]) && (0 != rowBytes[1]) && (0 != rowBytes[2])); |
| bool isValidWithoutPlanes = |
| ((NULL == planes) || |
| ((NULL == planes[0]) && (NULL == planes[1]) && (NULL == planes[2]))) && |
| ((NULL == rowBytes) || |
| ((0 == rowBytes[0]) && (0 == rowBytes[1]) && (0 == rowBytes[2]))); |
| |
| // Either we have all planes and rowBytes information or we have none of it |
| // Having only partial information is not supported |
| SkASSERT(isValidWithPlanes || isValidWithoutPlanes); |
| |
| // If we do have planes information, make sure all sizes are non 0 |
| // and all rowBytes are valid |
| SkASSERT(!isValidWithPlanes || |
| ((sizes[0].fWidth >= 0) && |
| (sizes[0].fHeight >= 0) && |
| (sizes[1].fWidth >= 0) && |
| (sizes[1].fHeight >= 0) && |
| (sizes[2].fWidth >= 0) && |
| (sizes[2].fHeight >= 0) && |
| (rowBytes[0] >= (size_t)sizes[0].fWidth) && |
| (rowBytes[1] >= (size_t)sizes[1].fWidth) && |
| (rowBytes[2] >= (size_t)sizes[2].fWidth))); |
| #endif |
| |
| return this->onGetYUV8Planes(sizes, planes, rowBytes, colorSpace); |
| } |
| |
| bool SkImageGenerator::onGetYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3]) { |
| return false; |
| } |
| |
| bool SkImageGenerator::onGetYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3], |
| SkYUVColorSpace* colorSpace) { |
| // In order to maintain compatibility with clients that implemented the original |
| // onGetYUV8Planes interface, we assume that the color space is JPEG. |
| // TODO(rileya): remove this and the old onGetYUV8Planes once clients switch over to |
| // the new interface. |
| if (colorSpace) { |
| *colorSpace = kJPEG_SkYUVColorSpace; |
| } |
| return this->onGetYUV8Planes(sizes, planes, rowBytes); |
| } |
| |
| ///////////////////////////////////////////////////////////////////////////////////////////// |
| |
| SkData* SkImageGenerator::onRefEncodedData() { |
| return NULL; |
| } |
| |
| #ifdef SK_LEGACY_IMAGE_GENERATOR_ENUMS_AND_OPTIONS |
| SkImageGenerator::Result SkImageGenerator::onGetPixels(const SkImageInfo& info, void* dst, |
| size_t rb, const Options& options, |
| SkPMColor* colors, int* colorCount) { |
| return kUnimplemented; |
| } |
| #else |
| bool SkImageGenerator::onGetPixels(const SkImageInfo& info, void* dst, size_t rb, |
| SkPMColor* colors, int* colorCount) { |
| return false; |
| } |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| #include "SkGraphics.h" |
| |
| static SkGraphics::ImageGeneratorFromEncodedFactory gFactory; |
| |
| SkGraphics::ImageGeneratorFromEncodedFactory |
| SkGraphics::SetImageGeneratorFromEncodedFactory(ImageGeneratorFromEncodedFactory factory) |
| { |
| ImageGeneratorFromEncodedFactory prev = gFactory; |
| gFactory = factory; |
| return prev; |
| } |
| |
| SkImageGenerator* SkImageGenerator::NewFromEncoded(SkData* data) { |
| if (NULL == data) { |
| return NULL; |
| } |
| if (gFactory) { |
| if (SkImageGenerator* generator = gFactory(data)) { |
| return generator; |
| } |
| } |
| return SkImageGenerator::NewFromEncodedImpl(data); |
| } |