Example #1
0
SkImageInfo SkImage_Lazy::buildCacheInfo(CachedFormat format) const {
    switch (format) {
        case kLegacy_CachedFormat:
            return fInfo.makeColorSpace(nullptr);
        case kLinearF16_CachedFormat:
            return fInfo.makeColorType(kRGBA_F16_SkColorType)
                        .makeColorSpace(fInfo.colorSpace()->makeLinearGamma());
        case kSRGB8888_CachedFormat:
            // If the transfer function is nearly (but not exactly) sRGB, we don't want the codec
            // to bother trans-coding. It would be slow, and do more harm than good visually,
            // so we make sure to leave the colorspace as-is.
            if (fInfo.colorSpace()->gammaCloseToSRGB()) {
                return fInfo.makeColorType(kRGBA_8888_SkColorType);
            } else {
                return fInfo.makeColorType(kRGBA_8888_SkColorType)
                            .makeColorSpace(fInfo.colorSpace()->makeSRGBGamma());
            }
        case kSBGR8888_CachedFormat:
            // See note above about not-quite-sRGB transfer functions.
            if (fInfo.colorSpace()->gammaCloseToSRGB()) {
                return fInfo.makeColorType(kBGRA_8888_SkColorType);
            } else {
                return fInfo.makeColorType(kBGRA_8888_SkColorType)
                            .makeColorSpace(fInfo.colorSpace()->makeSRGBGamma());
            }
        default:
            SkDEBUGFAIL("Invalid cached format");
            return fInfo;
    }
}
bool SkSurface_Gpu::Valid(const SkImageInfo& info) {
    switch (info.colorType()) {
        case kRGBA_F16_SkColorType:
            return (!info.colorSpace()) || info.colorSpace()->gammaIsLinear();
        case kRGBA_8888_SkColorType:
        case kBGRA_8888_SkColorType:
            return !info.colorSpace() || info.colorSpace()->gammaCloseToSRGB();
        default:
            return !info.colorSpace();
    }
}
Example #3
0
bool SkPngEncoderMgr::setColorSpace(const SkImageInfo& info) {
    if (setjmp(png_jmpbuf(fPngPtr))) {
        return false;
    }

    if (info.colorSpace() && info.colorSpace()->isSRGB()) {
        png_set_sRGB(fPngPtr, fInfoPtr, PNG_sRGB_INTENT_PERCEPTUAL);
    } else {
        set_icc(fPngPtr, fInfoPtr, info);
    }

    return true;
}
Example #4
0
DEF_TEST(ColorSpace_Named, r) {
    const struct {
        SkColorSpace::Named fNamed;
        bool fExpectedToSucceed;
        bool fIsSRGB;
    } recs[] {
        { SkColorSpace::kUnknown_Named,  false, false },
        { SkColorSpace::kSRGB_Named,     true,  true },
        { SkColorSpace::kAdobeRGB_Named, true,  false },
    };

    for (auto rec : recs) {
        auto cs = SkColorSpace::NewNamed(rec.fNamed);
        REPORTER_ASSERT(r, !cs == !rec.fExpectedToSucceed);
        if (cs) {
            if (rec.fIsSRGB) {
                REPORTER_ASSERT(r, SkColorSpace::kSRGB_GammaNamed == cs->gammaNamed());
            } else {
                REPORTER_ASSERT(r, SkColorSpace::k2Dot2Curve_GammaNamed == cs->gammaNamed());
            }
        }
    }

    SkImageInfo info = SkImageInfo::MakeS32(10, 10, kPremul_SkAlphaType);
    REPORTER_ASSERT(r, kSRGB_SkColorProfileType == info.profileType());
    REPORTER_ASSERT(r, SkColorSpace::kSRGB_GammaNamed == info.colorSpace()->gammaNamed());
}
Example #5
0
sk_sp<SkImage> SkSurface_Gpu::onNewImageSnapshot(SkBudgeted budgeted, ForceCopyMode forceCopyMode) {
    GrRenderTarget* rt = fDevice->accessDrawContext()->accessRenderTarget();
    SkASSERT(rt);
    GrTexture* tex = rt->asTexture();
    SkAutoTUnref<GrTexture> copy;
    // If the original render target is a buffer originally created by the client, then we don't
    // want to ever retarget the SkSurface at another buffer we create. Force a copy now to avoid
    // copy-on-write.
    if (kYes_ForceCopyMode == forceCopyMode || !tex || rt->resourcePriv().refsWrappedObjects()) {
        GrSurfaceDesc desc = fDevice->accessDrawContext()->desc();
        GrContext* ctx = fDevice->context();
        desc.fFlags = desc.fFlags & ~kRenderTarget_GrSurfaceFlag;
        copy.reset(ctx->textureProvider()->createTexture(desc, budgeted));
        if (!copy) {
            return nullptr;
        }
        if (!ctx->copySurface(copy, rt)) {
            return nullptr;
        }
        tex = copy;
    }
    const SkImageInfo info = fDevice->imageInfo();
    sk_sp<SkImage> image;
    if (tex) {
        image = sk_make_sp<SkImage_Gpu>(info.width(), info.height(), kNeedNewImageUniqueID,
                                        info.alphaType(), tex, sk_ref_sp(info.colorSpace()),
                                        budgeted);
    }
    return image;
}
Example #6
0
sk_sp<SkImage> SkImage::MakeFromBitmap(const SkBitmap& bm) {
    SkPixelRef* pr = bm.pixelRef();
    if (nullptr == pr) {
        return nullptr;
    }

#if SK_SUPPORT_GPU
    if (GrTexture* tex = pr->getTexture()) {
        SkAutoTUnref<GrTexture> unrefCopy;
        if (!bm.isImmutable()) {
            tex = GrDeepCopyTexture(tex, SkBudgeted::kNo);
            if (nullptr == tex) {
                return nullptr;
            }
            unrefCopy.reset(tex);
        }
        const SkImageInfo info = bm.info();
        return sk_make_sp<SkImage_Gpu>(info.width(), info.height(), bm.getGenerationID(),
                                       info.alphaType(), tex, sk_ref_sp(info.colorSpace()),
                                       SkBudgeted::kNo);
    }
#endif

    // This will check for immutable (share or copy)
    return SkMakeImageFromRasterBitmap(bm);
}
Example #7
0
bool SkImage_Lazy::onReadPixels(const SkImageInfo& dstInfo, void* dstPixels, size_t dstRB,
                                int srcX, int srcY, CachingHint chint) const {
    SkColorSpace* dstColorSpace = dstInfo.colorSpace();
    SkBitmap bm;
    if (kDisallow_CachingHint == chint) {
        CachedFormat cacheFormat = this->chooseCacheFormat(dstColorSpace);
        SkImageInfo genPixelsInfo = dstInfo;
        SkTransferFunctionBehavior behavior = getGeneratorBehaviorAndInfo(&genPixelsInfo);
        if (this->lockAsBitmapOnlyIfAlreadyCached(&bm, cacheFormat)) {
            return bm.readPixels(dstInfo, dstPixels, dstRB, srcX, srcY);
        } else {
            // Try passing the caller's buffer directly down to the generator. If this fails we
            // may still succeed in the general case, as the generator may prefer some other
            // config, which we could then convert via SkBitmap::readPixels.
            if (this->directGeneratePixels(genPixelsInfo, dstPixels, dstRB, srcX, srcY, behavior)) {
                return true;
            }
            // else fall through
        }
    }

    if (this->getROPixels(&bm, dstColorSpace, chint)) {
        return bm.readPixels(dstInfo, dstPixels, dstRB, srcX, srcY);
    }
    return false;
}
Example #8
0
SkSurfaceCharacterization GrContextThreadSafeProxy::createCharacterization(
                                     size_t cacheMaxResourceBytes,
                                     const SkImageInfo& ii, const GrBackendFormat& backendFormat,
                                     int sampleCnt, GrSurfaceOrigin origin,
                                     const SkSurfaceProps& surfaceProps,
                                     bool isMipMapped, bool willUseGLFBO0, bool isTextureable) {
    if (!backendFormat.isValid()) {
        return SkSurfaceCharacterization(); // return an invalid characterization
    }

    if (GrBackendApi::kOpenGL != backendFormat.backend() && willUseGLFBO0) {
        // The willUseGLFBO0 flags can only be used for a GL backend.
        return SkSurfaceCharacterization(); // return an invalid characterization
    }

    if (!this->caps()->mipMapSupport()) {
        isMipMapped = false;
    }

    GrPixelConfig config = this->caps()->getConfigFromBackendFormat(backendFormat, ii.colorType());
    if (config == kUnknown_GrPixelConfig) {
        return SkSurfaceCharacterization(); // return an invalid characterization
    }

    if (!SkSurface_Gpu::Valid(this->caps(), config, ii.colorSpace())) {
        return SkSurfaceCharacterization(); // return an invalid characterization
    }

    sampleCnt = this->caps()->getRenderTargetSampleCount(sampleCnt, config);
    if (!sampleCnt) {
        return SkSurfaceCharacterization(); // return an invalid characterization
    }

    GrFSAAType FSAAType = GrFSAAType::kNone;
    if (sampleCnt > 1) {
        FSAAType = this->caps()->usesMixedSamples() ? GrFSAAType::kMixedSamples
                                                    : GrFSAAType::kUnifiedMSAA;
    }

    if (willUseGLFBO0 && isTextureable) {
        return SkSurfaceCharacterization(); // return an invalid characterization
    }

    if (isTextureable && !this->caps()->isConfigTexturable(config)) {
        // Skia doesn't agree that this is textureable.
        return SkSurfaceCharacterization(); // return an invalid characterization
    }

    return SkSurfaceCharacterization(sk_ref_sp<GrContextThreadSafeProxy>(this),
                                     cacheMaxResourceBytes, ii,
                                     origin, config, FSAAType, sampleCnt,
                                     SkSurfaceCharacterization::Textureable(isTextureable),
                                     SkSurfaceCharacterization::MipMapped(isMipMapped),
                                     SkSurfaceCharacterization::UsesGLFBO0(willUseGLFBO0),
                                     SkSurfaceCharacterization::VulkanSecondaryCBCompatible(false),
                                     surfaceProps);
}
Example #9
0
bool SkJpegCodec::initializeColorXform(const SkImageInfo& dstInfo, bool needsColorXform) {
    if (needsColorXform) {
        fColorXform = SkColorSpaceXform::New(sk_ref_sp(this->getInfo().colorSpace()),
                                             sk_ref_sp(dstInfo.colorSpace()));
        if (!fColorXform && kRGBA_F16_SkColorType == dstInfo.colorType()) {
            return false;
        }
    }

    return true;
}
Example #10
0
    sk_sp<SkSpecialSurface> onMakeSurface(const SkImageInfo& info) const override {
        if (!fTexture->getContext()) {
            return nullptr;
        }

        GrPixelConfig config = SkImageInfo2GrPixelConfig(info, *fTexture->getContext()->caps());

        return SkSpecialSurface::MakeRenderTarget(fTexture->getContext(),
                info.width(), info.height(),
                config, sk_ref_sp(info.colorSpace()));
    }
Example #11
0
bool SkPngCodec::initializeXforms(const SkImageInfo& dstInfo, const Options& options,
                                  SkPMColor ctable[], int* ctableCount) {
    if (setjmp(png_jmpbuf(fPng_ptr))) {
        SkCodecPrintf("Failed on png_read_update_info.\n");
        return false;
    }
    png_read_update_info(fPng_ptr, fInfo_ptr);

    // It's important to reset fColorXform to nullptr.  We don't do this on rewinding
    // because the interlaced scanline decoder may need to rewind.
    fColorXform = nullptr;
    SkImageInfo swizzlerInfo = dstInfo;
    bool needsColorXform = needs_color_xform(dstInfo, this->getInfo());
    if (needsColorXform) {
        switch (dstInfo.colorType()) {
            case kRGBA_8888_SkColorType:
            case kBGRA_8888_SkColorType:
            case kRGBA_F16_SkColorType:
                swizzlerInfo = swizzlerInfo.makeColorType(kRGBA_8888_SkColorType);
                if (kPremul_SkAlphaType == dstInfo.alphaType()) {
                    swizzlerInfo = swizzlerInfo.makeAlphaType(kUnpremul_SkAlphaType);
                }
                break;
            case kIndex_8_SkColorType:
                break;
            default:
                return false;
        }

        fColorXform = SkColorSpaceXform::New(sk_ref_sp(this->getInfo().colorSpace()),
                                             sk_ref_sp(dstInfo.colorSpace()));

        if (!fColorXform && kRGBA_F16_SkColorType == dstInfo.colorType()) {
            return false;
        }
    }

    if (SkEncodedInfo::kPalette_Color == this->getEncodedInfo().color()) {
        if (!this->createColorTable(dstInfo, ctableCount)) {
            return false;
        }
    }

    // Copy the color table to the client if they request kIndex8 mode
    copy_color_table(swizzlerInfo, fColorTable, ctable, ctableCount);

    // Create the swizzler.  SkPngCodec retains ownership of the color table.
    const SkPMColor* colors = get_color_ptr(fColorTable.get());
    fSwizzler.reset(SkSwizzler::CreateSwizzler(this->getEncodedInfo(), colors, swizzlerInfo,
                                               options));
    SkASSERT(fSwizzler);
    return true;
}
Example #12
0
sk_sp<SkImage> SkImage::MakeTextureFromMipMap(GrContext* ctx, const SkImageInfo& info,
                                              const GrMipLevel* texels, int mipLevelCount,
                                              SkBudgeted budgeted,
                                              SkSourceGammaTreatment gammaTreatment) {
    if (!ctx) {
        return nullptr;
    }
    sk_sp<GrTexture> texture(GrUploadMipMapToTexture(ctx, info, texels, mipLevelCount));
    if (!texture) {
        return nullptr;
    }
    texture->texturePriv().setGammaTreatment(gammaTreatment);
    return sk_make_sp<SkImage_Gpu>(texture->width(), texture->height(), kNeedNewImageUniqueID,
                                   info.alphaType(), std::move(texture),
                                   sk_ref_sp(info.colorSpace()), budgeted);
}
Example #13
0
/*
 * Checks if the conversion between the input image and the requested output
 * image has been implemented
 * Sets the output color format
 */
bool SkHeifCodec::setOutputColorFormat(const SkImageInfo& dstInfo) {
    if (kUnknown_SkAlphaType == dstInfo.alphaType()) {
        return false;
    }

    if (kOpaque_SkAlphaType != dstInfo.alphaType()) {
        SkCodecPrintf("Warning: an opaque image should be decoded as opaque "
                "- it is being decoded as non-opaque, which will draw slower\n");
    }

    switch (dstInfo.colorType()) {
        case kRGBA_8888_SkColorType:
            return fHeifDecoder->setOutputColor(kHeifColorFormat_RGBA_8888);

        case kBGRA_8888_SkColorType:
            return fHeifDecoder->setOutputColor(kHeifColorFormat_BGRA_8888);

        case kRGB_565_SkColorType:
            if (this->colorXform()) {
                return fHeifDecoder->setOutputColor(kHeifColorFormat_RGBA_8888);
            } else {
                return fHeifDecoder->setOutputColor(kHeifColorFormat_RGB565);
            }

        case kRGBA_F16_SkColorType:
            SkASSERT(this->colorXform());

            if (!dstInfo.colorSpace()->gammaIsLinear()) {
                return false;
            }
            return fHeifDecoder->setOutputColor(kHeifColorFormat_RGBA_8888);

        default:
            return false;
    }
}
Example #14
0
/*
 *  We have 4 ways to try to return a texture (in sorted order)
 *
 *  1. Check the cache for a pre-existing one
 *  2. Ask the generator to natively create one
 *  3. Ask the generator to return YUV planes, which the GPU can convert
 *  4. Ask the generator to return RGB(A) data, which the GPU can convert
 */
sk_sp<GrTextureProxy> SkImage_Lazy::lockTextureProxy(GrContext* ctx,
                                                     const GrUniqueKey& origKey,
                                                     SkImage::CachingHint chint,
                                                     bool willBeMipped,
                                                     SkColorSpace* dstColorSpace,
                                                     GrTextureMaker::AllowedTexGenType genType) {
    // Values representing the various texture lock paths we can take. Used for logging the path
    // taken to a histogram.
    enum LockTexturePath {
        kFailure_LockTexturePath,
        kPreExisting_LockTexturePath,
        kNative_LockTexturePath,
        kCompressed_LockTexturePath, // Deprecated
        kYUV_LockTexturePath,
        kRGBA_LockTexturePath,
    };

    enum { kLockTexturePathCount = kRGBA_LockTexturePath + 1 };

    // Determine which cached format we're going to use (which may involve decoding to a different
    // info than the generator provides).
    CachedFormat format = this->chooseCacheFormat(dstColorSpace, ctx->caps());

    // Fold the cache format into our texture key
    GrUniqueKey key;
    this->makeCacheKeyFromOrigKey(origKey, format, &key);

    GrProxyProvider* proxyProvider = ctx->contextPriv().proxyProvider();
    sk_sp<GrTextureProxy> proxy;

    // 1. Check the cache for a pre-existing one
    if (key.isValid()) {
        proxy = proxyProvider->findOrCreateProxyByUniqueKey(key, kTopLeft_GrSurfaceOrigin);
        if (proxy) {
            SK_HISTOGRAM_ENUMERATION("LockTexturePath", kPreExisting_LockTexturePath,
                                     kLockTexturePathCount);
            if (!willBeMipped || GrMipMapped::kYes == proxy->mipMapped()) {
                return proxy;
            }
        }
    }

    // The CachedFormat is both an index for which cache "slot" we'll use to store this particular
    // decoded variant of the encoded data, and also a recipe for how to transform the original
    // info to get the one that we're going to decode to.
    const SkImageInfo cacheInfo = this->buildCacheInfo(format);
    SkImageInfo genPixelsInfo = cacheInfo;
    SkTransferFunctionBehavior behavior = getGeneratorBehaviorAndInfo(&genPixelsInfo);

    // 2. Ask the generator to natively create one
    if (!proxy) {
        ScopedGenerator generator(fSharedGenerator);
        if (GrTextureMaker::AllowedTexGenType::kCheap == genType &&
                SkImageGenerator::TexGenType::kCheap != generator->onCanGenerateTexture()) {
            return nullptr;
        }
        if ((proxy = generator->generateTexture(ctx, genPixelsInfo, fOrigin, behavior,
                                                willBeMipped))) {
            SK_HISTOGRAM_ENUMERATION("LockTexturePath", kNative_LockTexturePath,
                                     kLockTexturePathCount);
            set_key_on_proxy(proxyProvider, proxy.get(), nullptr, key);
            if (!willBeMipped || GrMipMapped::kYes == proxy->mipMapped()) {
                return proxy;
            }
        }
    }

    // 3. Ask the generator to return YUV planes, which the GPU can convert. If we will be mipping
    //    the texture we fall through here and have the CPU generate the mip maps for us.
    if (!proxy && !willBeMipped && !ctx->contextPriv().disableGpuYUVConversion()) {
        const GrSurfaceDesc desc = GrImageInfoToSurfaceDesc(cacheInfo, *ctx->caps());
        ScopedGenerator generator(fSharedGenerator);
        Generator_GrYUVProvider provider(generator);

        // The pixels in the texture will be in the generator's color space. If onMakeColorSpace
        // has been called then this will not match this image's color space. To correct this, apply
        // a color space conversion from the generator's color space to this image's color space.
        const SkColorSpace* generatorColorSpace =
                fSharedGenerator->fGenerator->getInfo().colorSpace();
        const SkColorSpace* thisColorSpace = fInfo.colorSpace();

        // TODO: Update to create the mipped surface in the YUV generator and draw the base layer
        // directly into the mipped surface.
        proxy = provider.refAsTextureProxy(ctx, desc, generatorColorSpace, thisColorSpace);
        if (proxy) {
            SK_HISTOGRAM_ENUMERATION("LockTexturePath", kYUV_LockTexturePath,
                                     kLockTexturePathCount);
            set_key_on_proxy(proxyProvider, proxy.get(), nullptr, key);
            return proxy;
        }
    }

    // 4. Ask the generator to return RGB(A) data, which the GPU can convert
    SkBitmap bitmap;
    if (!proxy && this->lockAsBitmap(&bitmap, chint, format, genPixelsInfo, behavior)) {
        if (willBeMipped) {
            proxy = proxyProvider->createMipMapProxyFromBitmap(bitmap, dstColorSpace);
        }
        if (!proxy) {
            proxy = GrUploadBitmapToTextureProxy(proxyProvider, bitmap, dstColorSpace);
        }
        if (proxy && (!willBeMipped || GrMipMapped::kYes == proxy->mipMapped())) {
            SK_HISTOGRAM_ENUMERATION("LockTexturePath", kRGBA_LockTexturePath,
                                     kLockTexturePathCount);
            set_key_on_proxy(proxyProvider, proxy.get(), nullptr, key);
            return proxy;
        }
    }

    if (proxy) {
        // We need a mipped proxy, but we either found a proxy earlier that wasn't mipped, generated
        // a native non mipped proxy, or generated a non-mipped yuv proxy. Thus we generate a new
        // mipped surface and copy the original proxy into the base layer. We will then let the gpu
        // generate the rest of the mips.
        SkASSERT(willBeMipped);
        SkASSERT(GrMipMapped::kNo == proxy->mipMapped());
        if (auto mippedProxy = GrCopyBaseMipMapToTextureProxy(ctx, proxy.get())) {
            set_key_on_proxy(proxyProvider, mippedProxy.get(), proxy.get(), key);
            return mippedProxy;
        }
        // We failed to make a mipped proxy with the base copied into it. This could have
        // been from failure to make the proxy or failure to do the copy. Thus we will fall
        // back to just using the non mipped proxy; See skbug.com/7094.
        return proxy;
    }

    SK_HISTOGRAM_ENUMERATION("LockTexturePath", kFailure_LockTexturePath,
                             kLockTexturePathCount);
    return nullptr;
}
Example #15
0
GrPixelConfig SkImageInfo2GrPixelConfig(const SkImageInfo& info, const GrCaps& caps) {
    return SkImageInfo2GrPixelConfig(info.colorType(), info.colorSpace(), caps);
}
Example #16
0
SkImageCacherator::CachedFormat SkImage_Lazy::chooseCacheFormat(SkColorSpace* dstColorSpace,
                                                                const GrCaps* grCaps) const {
    SkColorSpace* cs = fInfo.colorSpace();
    if (!cs || !dstColorSpace) {
        return kLegacy_CachedFormat;
    }

    CacheCaps caps(grCaps);
    switch (fInfo.colorType()) {
        case kUnknown_SkColorType:
        case kAlpha_8_SkColorType:
        case kRGB_565_SkColorType:
        case kARGB_4444_SkColorType:
        case kRGB_888x_SkColorType:
        case kRGBA_1010102_SkColorType:
        case kRGB_101010x_SkColorType:
            // We don't support color space on these formats, so always decode in legacy mode:
            // TODO: Ask the codec to decode these to something else (at least sRGB 8888)?
            return kLegacy_CachedFormat;

        case kGray_8_SkColorType:
            // TODO: What do we do with grayscale sources that have strange color spaces attached?
            // The codecs and color space xform don't handle this correctly (yet), so drop it on
            // the floor. (Also, inflating by a factor of 8 is going to be unfortunate).
            // As it is, we don't directly support sRGB grayscale, so ask the codec to convert
            // it for us. This bypasses some really sketchy code GrUploadPixmapToTexture.
            if (cs->gammaCloseToSRGB() && caps.supportsSRGB()) {
                return kSRGB8888_CachedFormat;
            } else {
                return kLegacy_CachedFormat;
            }

        case kRGBA_8888_SkColorType:
            if (cs->gammaCloseToSRGB()) {
                if (caps.supportsSRGB()) {
                    return kSRGB8888_CachedFormat;
                } else if (caps.supportsHalfFloat()) {
                    return kLinearF16_CachedFormat;
                } else {
                    return kLegacy_CachedFormat;
                }
            } else {
                if (caps.supportsHalfFloat()) {
                    return kLinearF16_CachedFormat;
                } else if (caps.supportsSRGB()) {
                    return kSRGB8888_CachedFormat;
                } else {
                    return kLegacy_CachedFormat;
                }
            }

        case kBGRA_8888_SkColorType:
            // Odd case. sBGRA isn't a real thing, so we may not have this texturable.
            if (caps.supportsSBGR()) {
                if (cs->gammaCloseToSRGB()) {
                    return kSBGR8888_CachedFormat;
                } else if (caps.supportsHalfFloat()) {
                    return kLinearF16_CachedFormat;
                } else if (caps.supportsSRGB()) {
                    return kSRGB8888_CachedFormat;
                } else {
                    // sBGRA support without sRGBA is highly unlikely (impossible?) Nevertheless.
                    return kLegacy_CachedFormat;
                }
            } else {
                if (cs->gammaCloseToSRGB()) {
                    if (caps.supportsSRGB()) {
                        return kSRGB8888_CachedFormat;
                    } else if (caps.supportsHalfFloat()) {
                        return kLinearF16_CachedFormat;
                    } else {
                        return kLegacy_CachedFormat;
                    }
                } else {
                    if (caps.supportsHalfFloat()) {
                        return kLinearF16_CachedFormat;
                    } else if (caps.supportsSRGB()) {
                        return kSRGB8888_CachedFormat;
                    } else {
                        return kLegacy_CachedFormat;
                    }
                }
            }

        case kRGBA_F16_SkColorType:
            if (caps.supportsHalfFloat()) {
                return kLinearF16_CachedFormat;
            } else if (caps.supportsSRGB()) {
                return kSRGB8888_CachedFormat;
            } else {
                return kLegacy_CachedFormat;
            }
    }
    SkDEBUGFAIL("Unreachable");
    return kLegacy_CachedFormat;
}
Example #17
0
size_t SkImage::getDeferredTextureImageData(const GrContextThreadSafeProxy& proxy,
                                            const DeferredTextureImageUsageParams params[],
                                            int paramCnt, void* buffer,
                                            SkColorSpace* dstColorSpace) const {
    // Extract relevant min/max values from the params array.
    int lowestPreScaleMipLevel = params[0].fPreScaleMipLevel;
    SkFilterQuality highestFilterQuality = params[0].fQuality;
    bool useMipMaps = should_use_mip_maps(params[0]);
    for (int i = 1; i < paramCnt; ++i) {
        if (lowestPreScaleMipLevel > params[i].fPreScaleMipLevel)
            lowestPreScaleMipLevel = params[i].fPreScaleMipLevel;
        if (highestFilterQuality < params[i].fQuality)
            highestFilterQuality = params[i].fQuality;
        useMipMaps |= should_use_mip_maps(params[i]);
    }

    const bool fillMode = SkToBool(buffer);
    if (fillMode && !SkIsAlign8(reinterpret_cast<intptr_t>(buffer))) {
        return 0;
    }

    // Calculate scaling parameters.
    bool isScaled = lowestPreScaleMipLevel != 0;

    SkISize scaledSize;
    if (isScaled) {
        // SkMipMap::ComputeLevelSize takes an index into an SkMipMap. SkMipMaps don't contain the
        // base level, so to get an SkMipMap index we must subtract one from the GL MipMap level.
        scaledSize = SkMipMap::ComputeLevelSize(this->width(), this->height(),
                                                lowestPreScaleMipLevel - 1);
    } else {
        scaledSize = SkISize::Make(this->width(), this->height());
    }

    // We never want to scale at higher than SW medium quality, as SW medium matches GPU high.
    SkFilterQuality scaleFilterQuality = highestFilterQuality;
    if (scaleFilterQuality > kMedium_SkFilterQuality) {
        scaleFilterQuality = kMedium_SkFilterQuality;
    }

    const int maxTextureSize = proxy.fCaps->maxTextureSize();
    if (scaledSize.width() > maxTextureSize || scaledSize.height() > maxTextureSize) {
        return 0;
    }

    SkAutoPixmapStorage pixmap;
    SkImageInfo info;
    size_t pixelSize = 0;
    size_t ctSize = 0;
    int ctCount = 0;
    if (!isScaled && this->peekPixels(&pixmap)) {
        info = pixmap.info();
        pixelSize = SkAlign8(pixmap.getSafeSize());
        if (pixmap.ctable()) {
            ctCount = pixmap.ctable()->count();
            ctSize = SkAlign8(pixmap.ctable()->count() * 4);
        }
    } else {
        // Here we're just using presence of data to know whether there is a codec behind the image.
        // In the future we will access the cacherator and get the exact data that we want to (e.g.
        // yuv planes) upload.
        sk_sp<SkData> data(this->refEncoded());
        if (!data && !this->peekPixels(nullptr)) {
            return 0;
        }
        info = as_IB(this)->onImageInfo().makeWH(scaledSize.width(), scaledSize.height());
        pixelSize = SkAlign8(SkAutoPixmapStorage::AllocSize(info, nullptr));
        if (fillMode) {
            pixmap.alloc(info);
            if (isScaled) {
                if (!this->scalePixels(pixmap, scaleFilterQuality,
                                       SkImage::kDisallow_CachingHint)) {
                    return 0;
                }
            } else {
                if (!this->readPixels(pixmap, 0, 0, SkImage::kDisallow_CachingHint)) {
                    return 0;
                }
            }
            SkASSERT(!pixmap.ctable());
        }
    }
    int mipMapLevelCount = 1;
    if (useMipMaps) {
        // SkMipMap only deals with the mipmap levels it generates, which does
        // not include the base level.
        // That means it generates and holds levels 1-x instead of 0-x.
        // So the total mipmap level count is 1 more than what
        // SkMipMap::ComputeLevelCount returns.
        mipMapLevelCount = SkMipMap::ComputeLevelCount(scaledSize.width(), scaledSize.height()) + 1;

        // We already initialized pixelSize to the size of the base level.
        // SkMipMap will generate the extra mipmap levels. Their sizes need to
        // be added to the total.
        // Index 0 here does not refer to the base mipmap level -- it is
        // SkMipMap's first generated mipmap level (level 1).
        for (int currentMipMapLevelIndex = mipMapLevelCount - 2; currentMipMapLevelIndex >= 0;
             currentMipMapLevelIndex--) {
            SkISize mipSize = SkMipMap::ComputeLevelSize(scaledSize.width(), scaledSize.height(),
                                                         currentMipMapLevelIndex);
            SkImageInfo mipInfo = info.makeWH(mipSize.fWidth, mipSize.fHeight);
            pixelSize += SkAlign8(SkAutoPixmapStorage::AllocSize(mipInfo, nullptr));
        }
    }
    size_t size = 0;
    size_t dtiSize = SkAlign8(sizeof(DeferredTextureImage));
    size += dtiSize;
    size += (mipMapLevelCount - 1) * sizeof(MipMapLevelData);
    // We subtract 1 because DeferredTextureImage already includes the base
    // level in its size
    size_t pixelOffset = size;
    size += pixelSize;
    size_t ctOffset = size;
    size += ctSize;
    size_t colorSpaceOffset = 0;
    size_t colorSpaceSize = 0;
    if (info.colorSpace()) {
        colorSpaceOffset = size;
        colorSpaceSize = info.colorSpace()->writeToMemory(nullptr);
        size += colorSpaceSize;
    }
    if (!fillMode) {
        return size;
    }
    char* bufferAsCharPtr = reinterpret_cast<char*>(buffer);
    char* pixelsAsCharPtr = bufferAsCharPtr + pixelOffset;
    void* pixels = pixelsAsCharPtr;
    void* ct = nullptr;
    if (ctSize) {
        ct = bufferAsCharPtr + ctOffset;
    }

    memcpy(reinterpret_cast<void*>(SkAlign8(reinterpret_cast<uintptr_t>(pixelsAsCharPtr))),
                                   pixmap.addr(), pixmap.getSafeSize());
    if (ctSize) {
        memcpy(ct, pixmap.ctable()->readColors(), ctSize);
    }

    // If the context has sRGB support, and we're intending to render to a surface with an attached
    // color space, and the image has an sRGB-like color space attached, then use our gamma (sRGB)
    // aware mip-mapping.
    SkSourceGammaTreatment gammaTreatment = SkSourceGammaTreatment::kIgnore;
    if (proxy.fCaps->srgbSupport() && SkToBool(dstColorSpace) &&
        info.colorSpace() && info.colorSpace()->gammaCloseToSRGB()) {
        gammaTreatment = SkSourceGammaTreatment::kRespect;
    }

    SkASSERT(info == pixmap.info());
    size_t rowBytes = pixmap.rowBytes();
    static_assert(std::is_standard_layout<DeferredTextureImage>::value,
                  "offsetof, which we use below, requires the type have standard layout");
    auto dtiBufferFiller = DTIBufferFiller{bufferAsCharPtr};
    FILL_MEMBER(dtiBufferFiller, fGammaTreatment, &gammaTreatment);
    FILL_MEMBER(dtiBufferFiller, fContextUniqueID, &proxy.fContextUniqueID);
    int width = info.width();
    FILL_MEMBER(dtiBufferFiller, fWidth, &width);
    int height = info.height();
    FILL_MEMBER(dtiBufferFiller, fHeight, &height);
    SkColorType colorType = info.colorType();
    FILL_MEMBER(dtiBufferFiller, fColorType, &colorType);
    SkAlphaType alphaType = info.alphaType();
    FILL_MEMBER(dtiBufferFiller, fAlphaType, &alphaType);
    FILL_MEMBER(dtiBufferFiller, fColorTableCnt, &ctCount);
    FILL_MEMBER(dtiBufferFiller, fColorTableData, &ct);
    FILL_MEMBER(dtiBufferFiller, fMipMapLevelCount, &mipMapLevelCount);
    memcpy(bufferAsCharPtr + offsetof(DeferredTextureImage, fMipMapLevelData[0].fPixelData),
           &pixels, sizeof(pixels));
    memcpy(bufferAsCharPtr + offsetof(DeferredTextureImage, fMipMapLevelData[0].fRowBytes),
           &rowBytes, sizeof(rowBytes));
    if (colorSpaceSize) {
        void* colorSpace = bufferAsCharPtr + colorSpaceOffset;
        FILL_MEMBER(dtiBufferFiller, fColorSpace, &colorSpace);
        FILL_MEMBER(dtiBufferFiller, fColorSpaceSize, &colorSpaceSize);
        info.colorSpace()->writeToMemory(bufferAsCharPtr + colorSpaceOffset);
    } else {
        memset(bufferAsCharPtr + offsetof(DeferredTextureImage, fColorSpace),
               0, sizeof(DeferredTextureImage::fColorSpace));
        memset(bufferAsCharPtr + offsetof(DeferredTextureImage, fColorSpaceSize),
               0, sizeof(DeferredTextureImage::fColorSpaceSize));
    }

    // Fill in the mipmap levels if they exist
    char* mipLevelPtr = pixelsAsCharPtr + SkAlign8(pixmap.getSafeSize());

    if (useMipMaps) {
        static_assert(std::is_standard_layout<MipMapLevelData>::value,
                      "offsetof, which we use below, requires the type have a standard layout");

        SkAutoTDelete<SkMipMap> mipmaps(SkMipMap::Build(pixmap, gammaTreatment, nullptr));
        // SkMipMap holds only the mipmap levels it generates.
        // A programmer can use the data they provided to SkMipMap::Build as level 0.
        // So the SkMipMap provides levels 1-x but it stores them in its own
        // range 0-(x-1).
        for (int generatedMipLevelIndex = 0; generatedMipLevelIndex < mipMapLevelCount - 1;
             generatedMipLevelIndex++) {
            SkMipMap::Level mipLevel;
            mipmaps->getLevel(generatedMipLevelIndex, &mipLevel);

            // Make sure the mipmap data is after the start of the buffer
            SkASSERT(mipLevelPtr > bufferAsCharPtr);
            // Make sure the mipmap data starts before the end of the buffer
            SkASSERT(mipLevelPtr < bufferAsCharPtr + pixelOffset + pixelSize);
            // Make sure the mipmap data ends before the end of the buffer
            SkASSERT(mipLevelPtr + mipLevel.fPixmap.getSafeSize() <=
                     bufferAsCharPtr + pixelOffset + pixelSize);

            // getSafeSize includes rowbyte padding except for the last row,
            // right?

            memcpy(mipLevelPtr, mipLevel.fPixmap.addr(), mipLevel.fPixmap.getSafeSize());

            memcpy(bufferAsCharPtr + offsetof(DeferredTextureImage, fMipMapLevelData) +
                   sizeof(MipMapLevelData) * (generatedMipLevelIndex + 1) +
                   offsetof(MipMapLevelData, fPixelData), &mipLevelPtr, sizeof(void*));
            size_t rowBytes = mipLevel.fPixmap.rowBytes();
            memcpy(bufferAsCharPtr + offsetof(DeferredTextureImage, fMipMapLevelData) +
                   sizeof(MipMapLevelData) * (generatedMipLevelIndex + 1) +
                   offsetof(MipMapLevelData, fRowBytes), &rowBytes, sizeof(rowBytes));

            mipLevelPtr += SkAlign8(mipLevel.fPixmap.getSafeSize());
        }
    }
    return size;
}
Example #18
0
bool SkJpegEncoderMgr::setParams(const SkImageInfo& srcInfo, const SkJpegEncoder::Options& options)
{
    auto chooseProc8888 = [&]() {
        if (kUnpremul_SkAlphaType != srcInfo.alphaType() ||
            SkJpegEncoder::AlphaOption::kIgnore == options.fAlphaOption)
        {
            return (transform_scanline_proc) nullptr;
        }

        // Note that kRespect mode is only supported with sRGB or linear transfer functions.
        // The legacy code path is incidentally correct when the transfer function is linear.
        const bool isSRGBTransferFn = srcInfo.gammaCloseToSRGB() &&
                (SkTransferFunctionBehavior::kRespect == options.fBlendBehavior);
        if (isSRGBTransferFn) {
            return transform_scanline_to_premul_linear;
        } else {
            return transform_scanline_to_premul_legacy;
        }
    };

    J_COLOR_SPACE jpegColorType = JCS_EXT_RGBA;
    int numComponents = 0;
    switch (srcInfo.colorType()) {
        case kRGBA_8888_SkColorType:
            fProc = chooseProc8888();
            jpegColorType = JCS_EXT_RGBA;
            numComponents = 4;
            break;
        case kBGRA_8888_SkColorType:
            fProc = chooseProc8888();
            jpegColorType = JCS_EXT_BGRA;
            numComponents = 4;
            break;
        case kRGB_565_SkColorType:
            fProc = transform_scanline_565;
            jpegColorType = JCS_RGB;
            numComponents = 3;
            break;
        case kARGB_4444_SkColorType:
            if (SkJpegEncoder::AlphaOption::kBlendOnBlack == options.fAlphaOption) {
                return false;
            }

            fProc = transform_scanline_444;
            jpegColorType = JCS_RGB;
            numComponents = 3;
            break;
        case kGray_8_SkColorType:
            SkASSERT(srcInfo.isOpaque());
            jpegColorType = JCS_GRAYSCALE;
            numComponents = 1;
            break;
        case kRGBA_F16_SkColorType:
            if (!srcInfo.colorSpace() || !srcInfo.colorSpace()->gammaIsLinear() ||
                    SkTransferFunctionBehavior::kRespect != options.fBlendBehavior) {
                return false;
            }

            if (kUnpremul_SkAlphaType != srcInfo.alphaType() ||
                SkJpegEncoder::AlphaOption::kIgnore == options.fAlphaOption)
            {
                fProc = transform_scanline_F16_to_8888;
            } else {
                fProc = transform_scanline_F16_to_premul_8888;
            }
            jpegColorType = JCS_EXT_RGBA;
            numComponents = 4;
            break;
        default:
            return false;
    }

    fCInfo.image_width = srcInfo.width();
    fCInfo.image_height = srcInfo.height();
    fCInfo.in_color_space = jpegColorType;
    fCInfo.input_components = numComponents;
    jpeg_set_defaults(&fCInfo);

    if (kGray_8_SkColorType != srcInfo.colorType()) {
        switch (options.fDownsample) {
            case SkJpegEncoder::Downsample::k420:
                SkASSERT(2 == fCInfo.comp_info[0].h_samp_factor);
                SkASSERT(2 == fCInfo.comp_info[0].v_samp_factor);
                SkASSERT(1 == fCInfo.comp_info[1].h_samp_factor);
                SkASSERT(1 == fCInfo.comp_info[1].v_samp_factor);
                SkASSERT(1 == fCInfo.comp_info[2].h_samp_factor);
                SkASSERT(1 == fCInfo.comp_info[2].v_samp_factor);
                break;
            case SkJpegEncoder::Downsample::k422:
                fCInfo.comp_info[0].h_samp_factor = 2;
                fCInfo.comp_info[0].v_samp_factor = 1;
                fCInfo.comp_info[1].h_samp_factor = 1;
                fCInfo.comp_info[1].v_samp_factor = 1;
                fCInfo.comp_info[2].h_samp_factor = 1;
                fCInfo.comp_info[2].v_samp_factor = 1;
                break;
            case SkJpegEncoder::Downsample::k444:
                fCInfo.comp_info[0].h_samp_factor = 1;
                fCInfo.comp_info[0].v_samp_factor = 1;
                fCInfo.comp_info[1].h_samp_factor = 1;
                fCInfo.comp_info[1].v_samp_factor = 1;
                fCInfo.comp_info[2].h_samp_factor = 1;
                fCInfo.comp_info[2].v_samp_factor = 1;
                break;
        }
    }

    // Tells libjpeg-turbo to compute optimal Huffman coding tables
    // for the image.  This improves compression at the cost of
    // slower encode performance.
    fCInfo.optimize_coding = TRUE;
    return true;
}