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C++ SkImageDecoder::decode方法代码示例

本文整理汇总了C++中SkImageDecoder::decode方法的典型用法代码示例。如果您正苦于以下问题：C++ SkImageDecoder::decode方法的具体用法？C++ SkImageDecoder::decode怎么用？C++ SkImageDecoder::decode使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SkImageDecoder的用法示例。


在下文中一共展示了SkImageDecoder::decode方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: stream

    ArcsView() {
        //testparse();
        fSweep = SkIntToScalar(100);
        this->setBGColor(0xFFDDDDDD);
		SkFILEStream stream("c:/test_ba.png");
		SkImageDecoder* dec = sk_libpng_dfactory(&stream);
		//delete dec;
		SkImageDecoder *coder = SkImageDecoder::Factory(&stream);
		coder->decode(&stream, &fbmp, SkColorType::kRGBA_8888_SkColorType, SkImageDecoder::kDecodePixels_Mode);
		delete dec;
    }
开发者ID:hgl888，项目名称:RuntimeCanvas，代码行数:11，代码来源:SampleArc.cpp

示例2: stream

	DecodeView() {
        SkFILEStream stream("/skimages/index.png");
        SkImageDecoder* codec = SkImageDecoder::Factory(&stream);
        if (codec) {
            for (size_t i = 0; i < SK_ARRAY_COUNT(gRec); i++) {
                stream.rewind();
                codec->setDitherImage(gRec[i].fDither);
                codec->decode(&stream, &fBitmap[i], gRec[i].fPrefConfig,
                              SkImageDecoder::kDecodePixels_Mode);
            }
        }
    }
开发者ID:ghub，项目名称:NVprSDK，代码行数:12，代码来源:SampleDecode.cpp

示例3: decodeBounds

bool MpoDecoder::decodeBounds()
{
    long bufferSize = mMP_Images[0]->getImageSize() + 2 + 2; //SOI + JPEG + EOI
    mMpoFileStream->rewind();
    if (false == mMpoFileStream->skip(mMP_Images[0]->getOffsetInFile()) ) {
        XLOGE("failed to jump to image data");
        return false;
    }

    char* jpegBuffer = (char*)malloc((unsigned int)bufferSize);
    if (NULL == jpegBuffer) {
        XLOGE("can not allocate memory to hold JPEG data");
        return false;
    }

    if (bufferSize != mMpoFileStream->read(jpegBuffer, bufferSize)) {
        free(jpegBuffer);
        XLOGE("read jpeg data failed");
        return false;
    }
    SkMemoryStream memStream(jpegBuffer, bufferSize);

    int sampleSize = 1;
    int preferSize = 0;
    bool doDither = true;

    SkBitmap* bitmap = new SkBitmap;
    SkBitmap::Config prefConfig = SkBitmap::kNo_Config;
    SkImageDecoder::Mode decodeMode = SkImageDecoder::kDecodeBounds_Mode;
    SkImageDecoder* decoder = SkImageDecoder::Factory(&memStream);
    if (NULL == decoder) {
        XLOGE("SkImageDecoder-Factory() returned false");
        free(jpegBuffer);
        return false;
    }

    decoder->setSampleSize(sampleSize);
    decoder->setDitherImage(doDither);
    //decoder->setPreferSize(preferSize);

    if (!decoder->decode(&memStream, bitmap, prefConfig, decodeMode)) {
        XLOGE("SkImageDecoder-decode() returned false");
        free(jpegBuffer);
        return false;
    }
    //free memory buffer
    free(jpegBuffer);
    mWidth = bitmap->width();
    mHeight = bitmap->height();
    //delete created SkBitmap
    delete bitmap;
    return true;
}
开发者ID:ferhung，项目名称:p201-mediatek，代码行数:53，代码来源:MpoDecoder.cpp

示例4: DecodeStream

bool SkImageDecoder::DecodeStream(SkStream* stream, SkBitmap* bm,
                                  SkBitmap::Config pref, Mode mode) {
    SkASSERT(stream);
    SkASSERT(bm);

    bool success = false;
    SkImageDecoder* codec = SkImageDecoder::Factory(stream);

    if (NULL != codec) {
        success = codec->decode(stream, bm, pref, mode);
        delete codec;
    }
    return success;
}
开发者ID:edrikL，项目名称:gears，代码行数:14，代码来源:SkImageDecoder.cpp

示例5: onOnceBeforeDraw

 void onOnceBeforeDraw() override {
     SkImageDecoder* codec = nullptr;
     SkString resourcePath = GetResourcePath("mandrill_512.png");
     SkFILEStream stream(resourcePath.c_str());
     if (stream.isValid()) {
         codec = SkImageDecoder::Factory(&stream);
     }
     if (codec) {
         stream.rewind();
         codec->decode(&stream, &fBM, kN32_SkColorType, SkImageDecoder::kDecodePixels_Mode);
         delete codec;
     } else {
         fBM.allocN32Pixels(1, 1);
         fBM.eraseARGB(255, 255, 0 , 0); // red == bad
     }
 }
开发者ID:YangchenVR，项目名称:skia，代码行数:16，代码来源:pixelxorxfermode.cpp

示例6: makeBitmap

 void makeBitmap() {
     SkImageDecoder* codec = NULL;
     SkString resourcePath = GetResourcePath(fFilename.c_str());
     SkFILEStream stream(resourcePath.c_str());
     if (stream.isValid()) {
         codec = SkImageDecoder::Factory(&stream);
     }
     if (codec) {
         stream.rewind();
         codec->decode(&stream, &fBM, kN32_SkColorType, SkImageDecoder::kDecodePixels_Mode);
         SkDELETE(codec);
     } else {
         fBM.allocN32Pixels(1, 1);
         *(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad
     }
     fSize = fBM.height();
 }
开发者ID:guolianzhu，项目名称:skia，代码行数:17，代码来源:filterindiabox.cpp

示例7: ImageDataToSkBitmap

int ResSkiaImage::ImageDataToSkBitmap(NVGcontext* ctx, const CStdString& src, CStdValVector* data) {
	int bitmap = 0;
	bool bOpaque = false;

// 	if (!data->m_data)
// 		return 0;
//
// 	SkMemoryStream* stream = data->m_data;
// 	return nvgCreateImageMem(ctx, 0, (unsigned char *)stream->getMemoryBase(), stream->getLength());
	return nvgCreateImageMem(ctx, 0, (unsigned char *)data->GetBuffer(), data->GetSize());

#if 0
	if (-1 != src.Find(L".jpg") || -1 != src.Find(L".png")) { // 这里改为不需要后缀，直接通过文件头判断是何图片类型
		bOpaque = true;
		GDIPlusDecoder(data);
	}

	SkMemoryStream* stream = data->m_data; // GDIPlusDecoder可能会更改m_data
	if (!stream)
		return NULL;

	bitmap = new SkBitmap();
	if (BMPImageReader::decode(false, stream, bitmap))
		return bitmap;
	
	delete bitmap;
	return 0;
#endif

#if 0 // 直接用skia的BMP解压器，会发现png转换而成的BMP32，会丢失alpha通道
	SkImageDecoder* coder = SkImageDecoder::Factory(stream);
	if (!coder) 
		return NULL;

	bitmap = new SkBitmap();

	if (!coder->decode(stream, bitmap, SkBitmap::kARGB_8888_Config, SkImageDecoder::kDecodePixels_Mode)) {
		delete bitmap;
		return NULL;
	}

	bitmap->setIsOpaque(bOpaque);
#endif
	return bitmap;
}
开发者ID:henryrao，项目名称:kdguigl，代码行数:45，代码来源:ResSkiaImage.cpp

示例8: decodeAsset

bool RenderSkinNinePatch::decodeAsset(AssetManager* am, const char* filename, NinePatch* ninepatch) {
    Asset* asset = am->open(filename, android::Asset::ACCESS_BUFFER);
    if (!asset) {
        asset = am->openNonAsset(filename, android::Asset::ACCESS_BUFFER);
        if (!asset) {
            return false;
        }
    }

    SkImageDecoder::Mode mode = SkImageDecoder::kDecodePixels_Mode;
    SkBitmap::Config prefConfig = SkBitmap::kNo_Config;
    SkMemoryStream stream(asset->getBuffer(false), asset->getLength());
    SkImageDecoder* decoder = SkImageDecoder::Factory(&stream);
    if (!decoder) {
        asset->close();
        ALOGE("RenderSkinNinePatch::Failed to create an image decoder");
        return false;
    }

    decoder->setSampleSize(1);
    decoder->setDitherImage(true);
    decoder->setPreferQualityOverSpeed(false);

    NinePatchPeeker peeker(decoder);

    SkAutoTDelete<SkImageDecoder> add(decoder);

    decoder->setPeeker(&peeker);
    if (!decoder->decode(&stream, &ninepatch->m_bitmap, prefConfig, mode, true)) {
        asset->close();
        ALOGE("RenderSkinNinePatch::Failed to decode nine patch asset");
        return false;
    }

    asset->close();
    if (!peeker.fPatch) {
        ALOGE("RenderSkinNinePatch::Patch data not valid");
        return false;
    }
    void** data = &ninepatch->m_serializedPatchData;
    *data = malloc(peeker.fPatch->serializedSize());
    peeker.fPatch->serialize(*data);
    return true;
}
开发者ID:0omega，项目名称:platform_external_webkit，代码行数:44，代码来源:RenderSkinNinePatch.cpp

示例9: NewFromData

SkImageGenerator* SkImageGenerator::NewFromData(SkData* data) {
    if (NULL == data) {
        return NULL;
    }

    SkMemoryStream stream(data->data(), data->size(), false);
    SkImageDecoder* decoder = SkImageDecoder::Factory(&stream);
    if (NULL == decoder) {
        return NULL;
    }

    SkBitmap bm;
    stream.rewind();
    if (!decoder->decode(&stream, &bm, kUnknown_SkColorType, SkImageDecoder::kDecodeBounds_Mode)) {
        SkDELETE(decoder);
        return NULL;
    }

    return SkNEW_ARGS(SkImageDecoderGenerator, (bm.info(), decoder, data));
}
开发者ID:Ashu17，项目名称:blackberry，代码行数:20，代码来源:SkImageGenerator_skia.cpp

示例10: DecodeStream

bool SkImageDecoder::DecodeStream(SkStreamRewindable* stream, SkBitmap* bm, SkColorType pref,
                                  Mode mode, Format* format) {
    SkASSERT(stream);
    SkASSERT(bm);

    bool success = false;
    SkImageDecoder* codec = SkImageDecoder::Factory(stream);

    if (codec) {
        success = codec->decode(stream, bm, pref, mode) != kFailure;
        if (success && format) {
            *format = codec->getFormat();
            if (kUnknown_Format == *format) {
                if (stream->rewind()) {
                    *format = GetStreamFormat(stream);
                }
            }
        }
        delete codec;
    }
    return success;
}
开发者ID:johnkit，项目名称:skia，代码行数:22，代码来源:SkImageDecoder.cpp

示例11: stream

 SubpixelTranslateView(const char imageFilename[],
                       float horizontalVelocity,
                       float verticalVelocity)
   : fHorizontalVelocity(horizontalVelocity),
     fVerticalVelocity(verticalVelocity) {
   SkString resourcePath = GetResourcePath(imageFilename);
   SkImageDecoder* codec = NULL;
   SkFILEStream stream(resourcePath.c_str());
   if (stream.isValid()) {
       codec = SkImageDecoder::Factory(&stream);
   }
   if (codec) {
       stream.rewind();
       codec->decode(&stream, &fBM, kN32_SkColorType, SkImageDecoder::kDecodePixels_Mode);
       delete codec;
   } else {
       fBM.allocN32Pixels(1, 1);
       *(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad
   }
   fCurPos = SkPoint::Make(0,0);
   fSize = 200;
 }
开发者ID:webbjiang，项目名称:skia，代码行数:22，代码来源:SampleSubpixelTranslate.cpp

示例12: decodeFileAndWrite

static void decodeFileAndWrite(const char srcPath[]) {
    SkBitmap bitmap;
    SkFILEStream stream(srcPath);
    if (!stream.isValid()) {
        return;
    }

    SkImageDecoder* codec = SkImageDecoder::Factory(&stream);
    if (NULL == codec) {
        return;
    }

    SkAutoTDelete<SkImageDecoder> ad(codec);

    stream.rewind();

    if (!codec->decode(&stream, &bitmap, SkBitmap::kARGB_8888_Config,
                       SkImageDecoder::kDecodePixels_Mode)) {
        return;
    }

    write_bitmap(srcPath, bitmap);
}
开发者ID:andreicoman11，项目名称:OsmAnd-external-skia，代码行数:23，代码来源:chop_transparency_main.cpp

示例13: decodeFile

static bool decodeFile(SkBitmap* bitmap, const char srcPath[]) {
    SkFILEStream stream(srcPath);
    if (!stream.isValid()) {
        SkDebugf("ERROR: bad filename <%s>\n", srcPath);
        return false;
    }

    SkImageDecoder* codec = SkImageDecoder::Factory(&stream);
    if (NULL == codec) {
        SkDebugf("ERROR: no codec found for <%s>\n", srcPath);
        return false;
    }

    SkAutoTDelete<SkImageDecoder> ad(codec);

    stream.rewind();
    if (!codec->decode(&stream, bitmap, SkBitmap::kARGB_8888_Config,
                       SkImageDecoder::kDecodePixels_Mode)) {
        SkDebugf("ERROR: codec failed for <%s>\n", srcPath);
        return false;
    }
    return true;
}
开发者ID:Androtos，项目名称:toolchain_benchmark，代码行数:23，代码来源:skimage_main.cpp

示例14: get_bitmap

bool get_bitmap(SkData* fileBits, DiffResource& resource, SkImageDecoder::Mode mode) {
    SkMemoryStream stream(fileBits->data(), fileBits->size());

    SkImageDecoder* codec = SkImageDecoder::Factory(&stream);
    if (NULL == codec) {
        SkDebugf("ERROR: no codec found for <%s>\n", resource.fFullPath.c_str());
        resource.fStatus = DiffResource::kCouldNotDecode_Status;
        return false;
    }

    // In debug, the DLL will automatically be unloaded when this is deleted,
    // but that shouldn't be a problem in release mode.
    SkAutoTDelete<SkImageDecoder> ad(codec);

    stream.rewind();
    if (!codec->decode(&stream, &resource.fBitmap, SkBitmap::kARGB_8888_Config, mode)) {
        SkDebugf("ERROR: codec failed for basePath <%s>\n", resource.fFullPath.c_str());
        resource.fStatus = DiffResource::kCouldNotDecode_Status;
        return false;
    }

    resource.fStatus = DiffResource::kDecoded_Status;
    return true;
}
开发者ID:UIKit0，项目名称:skia，代码行数:24，代码来源:skdiff_utils.cpp

示例15: add

BitmapGlue*
BitmapFactoryGlue::doDecode(SkStream* stream, Options& options,
			    bool allowPurgeable, bool forcePurgeable)
{
	int sampleSize = 1;
	SkImageDecoder::Mode mode = SkImageDecoder::kDecodePixels_Mode;
	SkBitmap::Config prefConfig = SkBitmap::kARGB_8888_Config;
	bool doDither = true;
	bool isMutable = false;
	bool isPurgeable = forcePurgeable || (allowPurgeable && options.isPurgeable);
	BitmapGlue* javaBitmap = NULL;

	sampleSize = options.sampleSize;
	if (options.justDecodeBounds)
		mode = SkImageDecoder::kDecodeBounds_Mode;
	// initialize these, in case we fail later on
	options.width = -1;
	options.height = -1;

	prefConfig = options.config;
	isMutable = options.isMutable;
	doDither = options.doDither;
	javaBitmap = options.bitmap;

	SkImageDecoder* decoder = SkImageDecoder::Factory(stream);
	if (NULL == decoder)
		return NULL;

	decoder->setSampleSize(sampleSize);
	decoder->setDitherImage(doDither);

	BitmapGlue* bitmap;
	if (javaBitmap == NULL) {
		bitmap = new BitmapGlue;
	} else {
		if (sampleSize != 1) {
			return NULL;
		}
		bitmap = javaBitmap;
		// config of supplied bitmap overrules config set in options
		prefConfig = bitmap->getConfig();
	}

	SkAutoTDelete<SkImageDecoder>   add(decoder);
	SkAutoTDelete<SkBitmap>         adb(bitmap, (javaBitmap == NULL));

	SkImageDecoder::Mode decodeMode = mode;
	if (isPurgeable) {
		decodeMode = SkImageDecoder::kDecodeBounds_Mode;
	}
	if (!decoder->decode(stream, bitmap, prefConfig, decodeMode))
		return NULL;

	// update options (if any)
	options.width = bitmap->width();
	options.height = bitmap->height();

	// if we're in justBounds mode, return now (skip the java bitmap)
	if (SkImageDecoder::kDecodeBounds_Mode == mode) {
		return NULL;
	}

	// detach bitmap from its autodeleter, since we want to own it now
	adb.detach();

	SkPixelRef* pr;
	if (isPurgeable) {
		pr = installPixelRef(bitmap, stream, sampleSize, doDither);
	} else {
		// if we get here, we're in kDecodePixels_Mode and will therefore
		// already have a pixelref installed.
		pr = bitmap->pixelRef();
	}

	if (!isMutable) {
		// promise we will never change our pixels (great for sharing and pictures)
		pr->setImmutable();
	}

	if (javaBitmap != NULL) {
		// If a java bitmap was passed in for reuse, pass it back
		return javaBitmap;
	}
	// now create the java bitmap
	return bitmap;
}
开发者ID:AliFarahnak，项目名称:XobotOS，代码行数:86，代码来源:BitmapFactoryGlue.cpp


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