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/*
* 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 "SkImage.h"
#include "SkImageGenerator.h"
#include "SkNextID.h"
SkImageGenerator::SkImageGenerator(const SkImageInfo& info, uint32_t uniqueID)
: fInfo(info)
, fUniqueID(kNeedNewImageUniqueID == uniqueID ? SkNextID::ImageID() : uniqueID)
{}
bool SkImageGenerator::getPixels(const SkImageInfo& info, void* pixels, size_t rowBytes,
SkPMColor ctable[], int* ctableCount) {
if (kUnknown_SkColorType == info.colorType()) {
return false;
}
if (nullptr == pixels) {
return false;
}
if (rowBytes < info.minRowBytes()) {
return false;
}
if (kIndex_8_SkColorType == info.colorType()) {
if (nullptr == ctable || nullptr == ctableCount) {
return false;
}
} else {
if (ctableCount) {
*ctableCount = 0;
}
ctableCount = nullptr;
ctable = nullptr;
}
const bool success = this->onGetPixels(info, pixels, rowBytes, ctable, ctableCount);
if (success && ctableCount) {
SkASSERT(*ctableCount >= 0 && *ctableCount <= 256);
}
return success;
}
bool SkImageGenerator::getPixels(const SkImageInfo& info, void* pixels, size_t rowBytes,
const Options* opts) {
Options defaultOpts;
if (!opts) {
opts = &defaultOpts;
}
return this->onGetPixels(info, pixels, rowBytes, *opts);
}
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, nullptr, nullptr);
}
bool SkImageGenerator::queryYUV8(SkYUVSizeInfo* sizeInfo, SkYUVColorSpace* colorSpace) const {
SkASSERT(sizeInfo);
return this->onQueryYUV8(sizeInfo, colorSpace);
}
bool SkImageGenerator::getYUV8Planes(const SkYUVSizeInfo& sizeInfo, void* planes[3]) {
SkASSERT(sizeInfo.fSizes[SkYUVSizeInfo::kY].fWidth >= 0);
SkASSERT(sizeInfo.fSizes[SkYUVSizeInfo::kY].fHeight >= 0);
SkASSERT(sizeInfo.fSizes[SkYUVSizeInfo::kU].fWidth >= 0);
SkASSERT(sizeInfo.fSizes[SkYUVSizeInfo::kU].fHeight >= 0);
SkASSERT(sizeInfo.fSizes[SkYUVSizeInfo::kV].fWidth >= 0);
SkASSERT(sizeInfo.fSizes[SkYUVSizeInfo::kV].fHeight >= 0);
SkASSERT(sizeInfo.fWidthBytes[SkYUVSizeInfo::kY] >=
(size_t) sizeInfo.fSizes[SkYUVSizeInfo::kY].fWidth);
SkASSERT(sizeInfo.fWidthBytes[SkYUVSizeInfo::kU] >=
(size_t) sizeInfo.fSizes[SkYUVSizeInfo::kU].fWidth);
SkASSERT(sizeInfo.fWidthBytes[SkYUVSizeInfo::kV] >=
(size_t) sizeInfo.fSizes[SkYUVSizeInfo::kV].fWidth);
SkASSERT(planes && planes[0] && planes[1] && planes[2]);
return this->onGetYUV8Planes(sizeInfo, planes);
}
#if SK_SUPPORT_GPU
#include "GrTextureProxy.h"
sk_sp<GrTextureProxy> SkImageGenerator::generateTexture(GrContext* ctx, const SkImageInfo& info,
const SkIPoint& origin) {
SkIRect srcRect = SkIRect::MakeXYWH(origin.x(), origin.y(), info.width(), info.height());
if (!SkIRect::MakeWH(fInfo.width(), fInfo.height()).contains(srcRect)) {
return nullptr;
}
return this->onGenerateTexture(ctx, info, origin);
}
sk_sp<GrTextureProxy> SkImageGenerator::onGenerateTexture(GrContext*, const SkImageInfo&,
const SkIPoint&) {
return nullptr;
}
#endif
/////////////////////////////////////////////////////////////////////////////////////////////
SkData* SkImageGenerator::onRefEncodedData(GrContext* ctx) {
return nullptr;
}
bool SkImageGenerator::onGetPixels(const SkImageInfo& info, void* dst, size_t rb,
SkPMColor* colors, int* colorCount) {
return false;
}
///////////////////////////////////////////////////////////////////////////////////////////////////
#include "SkBitmap.h"
#include "SkColorTable.h"
#include "SkGraphics.h"
static SkGraphics::ImageGeneratorFromEncodedDataFactory gFactory;
SkGraphics::ImageGeneratorFromEncodedDataFactory
SkGraphics::SetImageGeneratorFromEncodedDataFactory(ImageGeneratorFromEncodedDataFactory factory)
{
ImageGeneratorFromEncodedDataFactory prev = gFactory;
gFactory = factory;
return prev;
}
std::unique_ptr<SkImageGenerator> SkImageGenerator::MakeFromEncoded(sk_sp<SkData> data) {
if (!data) {
return nullptr;
}
if (gFactory) {
if (std::unique_ptr<SkImageGenerator> generator = gFactory(data)) {
return generator;
}
}
return SkImageGenerator::MakeFromEncodedImpl(std::move(data));
}
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