Esempio n. 1
0
CPLErr WEBPDataset::Uncompress()
{
    if (bHasBeenUncompressed)
        return eUncompressErrRet;

    bHasBeenUncompressed = TRUE;
    eUncompressErrRet = CE_Failure;

    // To avoid excessive memory allocation attempts
    // Normally WebP images are no larger than 16383x16383*4 ~= 1 GB
    if( nRasterXSize > INT_MAX / (nRasterYSize * nBands) )
    {
        CPLError(CE_Failure, CPLE_NotSupported,
                 "Too large image");
        return CE_Failure;
    }

    pabyUncompressed = reinterpret_cast<GByte*>(
        VSIMalloc3(nRasterXSize, nRasterYSize, nBands ) );
    if (pabyUncompressed == nullptr)
        return CE_Failure;

    VSIFSeekL(fpImage, 0, SEEK_END);
    vsi_l_offset nSizeLarge = VSIFTellL(fpImage);
    if( nSizeLarge != static_cast<vsi_l_offset>( static_cast<uint32_t>( nSizeLarge ) ) )
        return CE_Failure;
    VSIFSeekL(fpImage, 0, SEEK_SET);
    uint32_t nSize = static_cast<uint32_t>( nSizeLarge );
    uint8_t* pabyCompressed = reinterpret_cast<uint8_t*>( VSIMalloc(nSize) );
    if (pabyCompressed == nullptr)
        return CE_Failure;
    VSIFReadL(pabyCompressed, 1, nSize, fpImage);
    uint8_t* pRet;

    if (nBands == 4)
        pRet = WebPDecodeRGBAInto(
            pabyCompressed,
            static_cast<uint32_t>( nSize ),
            static_cast<uint8_t*>( pabyUncompressed),
            nRasterXSize * nRasterYSize * nBands,
            nRasterXSize * nBands );
    else
        pRet = WebPDecodeRGBInto(
            pabyCompressed,
            static_cast<uint32_t>( nSize ),
            static_cast<uint8_t*>( pabyUncompressed ),
            nRasterXSize * nRasterYSize * nBands,
            nRasterXSize * nBands );

    VSIFree(pabyCompressed);
    if (pRet == nullptr)
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                    "WebPDecodeRGBInto() failed");
        return CE_Failure;
    }
    eUncompressErrRet = CE_None;

    return CE_None;
}
Esempio n. 2
0
void LoadWEBP(const char *filename, unsigned char **pic, int *width, int *height, byte alphaByte)
{
	byte           *out;
	int             len;
	int		stride;
	int		size;
	union
	{
		byte           *b;
		void           *v;
	} fbuffer;

	/* read compressed data */
	len = ri.FS_ReadFile((char *)filename, &fbuffer.v);
	if(!fbuffer.b || len < 0)
	{
		return;
	}

	/* validate data and query image size */
	if( !WebPGetInfo( fbuffer.b, len, width, height ) )
		return;

	stride = *width * sizeof( color4ub_t );
	size = *height * stride;

	out = ri.Z_Malloc( size );
	if( !WebPDecodeRGBAInto( fbuffer.b, len, out, size, stride ) ) {
		ri.Free( out );
		return;
	}

	ri.FS_FreeFile(fbuffer.v);
	*pic = out;
}
Esempio n. 3
0
Error webp_load_image_from_buffer(Image *p_image, const uint8_t *p_buffer, int p_buffer_len) {

	ERR_FAIL_NULL_V(p_image, ERR_INVALID_PARAMETER);

	WebPBitstreamFeatures features;
	if (WebPGetFeatures(p_buffer, p_buffer_len, &features) != VP8_STATUS_OK) {
		// ERR_EXPLAIN("Error decoding WEBP image");
		ERR_FAIL_V(ERR_FILE_CORRUPT);
	}

	PoolVector<uint8_t> dst_image;
	int datasize = features.width * features.height * (features.has_alpha ? 4 : 3);
	dst_image.resize(datasize);
	PoolVector<uint8_t>::Write dst_w = dst_image.write();

	bool errdec = false;
	if (features.has_alpha) {
		errdec = WebPDecodeRGBAInto(p_buffer, p_buffer_len, dst_w.ptr(), datasize, 4 * features.width) == NULL;
	} else {
		errdec = WebPDecodeRGBInto(p_buffer, p_buffer_len, dst_w.ptr(), datasize, 3 * features.width) == NULL;
	}
	dst_w = PoolVector<uint8_t>::Write();

	//ERR_EXPLAIN("Error decoding webp!");
	ERR_FAIL_COND_V(errdec, ERR_FILE_CORRUPT);

	p_image->create(features.width, features.height, 0, features.has_alpha ? Image::FORMAT_RGBA8 : Image::FORMAT_RGB8, dst_image);

	return OK;
}
Esempio n. 4
0
CPLErr WEBPDataset::Uncompress()
{
    if (bHasBeenUncompressed)
        return eUncompressErrRet;

    bHasBeenUncompressed = TRUE;
    eUncompressErrRet = CE_Failure;

    pabyUncompressed = reinterpret_cast<GByte*>(
        VSIMalloc3(nRasterXSize, nRasterYSize, nBands ) );
    if (pabyUncompressed == NULL)
        return CE_Failure;

    VSIFSeekL(fpImage, 0, SEEK_END);
    vsi_l_offset nSizeLarge = VSIFTellL(fpImage);
    if( nSizeLarge != static_cast<vsi_l_offset>( static_cast<uint32_t>( nSizeLarge ) ) )
        return CE_Failure;
    VSIFSeekL(fpImage, 0, SEEK_SET);
    uint32_t nSize = static_cast<uint32_t>( nSizeLarge );
    uint8_t* pabyCompressed = reinterpret_cast<uint8_t*>( VSIMalloc(nSize) );
    if (pabyCompressed == NULL)
        return CE_Failure;
    VSIFReadL(pabyCompressed, 1, nSize, fpImage);
    uint8_t* pRet;

    if (nBands == 4)
        pRet = WebPDecodeRGBAInto(
            pabyCompressed,
            static_cast<uint32_t>( nSize ),
            static_cast<uint8_t*>( pabyUncompressed),
            nRasterXSize * nRasterYSize * nBands,
            nRasterXSize * nBands );
    else
        pRet = WebPDecodeRGBInto(
            pabyCompressed,
            static_cast<uint32_t>( nSize ),
            static_cast<uint8_t*>( pabyUncompressed ),
            nRasterXSize * nRasterYSize * nBands,
            nRasterXSize * nBands );

    VSIFree(pabyCompressed);
    if (pRet == NULL)
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                    "WebPDecodeRGBInto() failed");
        return CE_Failure;
    }
    eUncompressErrRet = CE_None;

    return CE_None;
}
Esempio n. 5
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PremultipliedImage decodeWebP(const uint8_t* data, size_t size) {
    int width = 0, height = 0;
    if (WebPGetInfo(data, size, &width, &height) == 0) {
        throw std::runtime_error("failed to retrieve WebP basic header information");
    }

    int stride = width * 4;
    size_t webpSize = stride * height;
    auto webp = std::make_unique<uint8_t[]>(webpSize);

    if (!WebPDecodeRGBAInto(data, size, webp.get(), webpSize, stride)) {
        throw std::runtime_error("failed to decode WebP data");
    }

    UnassociatedImage image { size_t(width), size_t(height), std::move(webp) };
    return util::premultiply(std::move(image));
}
Esempio n. 6
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/*!
 * \brief   pixReadMemWebP()
 *
 * \param[in]  filedata    webp compressed data in memory
 * \param[in]  filesize    number of bytes in data
 * \return  pix 32 bpp, or NULL on error
 *
 * <pre>
 * Notes:
 *      (1) When the encoded data only has 3 channels (no alpha),
 *          WebPDecodeRGBAInto() generates a raster of 32-bit pixels, with
 *          the alpha channel set to opaque (255).
 *      (2) We don't need to use the gnu runtime functions like fmemopen()
 *          for redirecting data from a stream to memory, because
 *          the webp library has been written with memory-to-memory
 *          functions at the lowest level (which is good!).  And, in
 *          any event, fmemopen() doesn't work with l_binaryReadStream().
 * </pre>
 */
PIX *
pixReadMemWebP(const l_uint8  *filedata,
               size_t          filesize)
{
l_uint8   *out = NULL;
l_int32    w, h, has_alpha, wpl, stride;
l_uint32  *data;
size_t     size;
PIX       *pix;
WebPBitstreamFeatures  features;

    PROCNAME("pixReadMemWebP");

    if (!filedata)
        return (PIX *)ERROR_PTR("filedata not defined", procName, NULL);

    if (WebPGetFeatures(filedata, filesize, &features))
        return (PIX *)ERROR_PTR("Invalid WebP file", procName, NULL);
    w = features.width;
    h = features.height;
    has_alpha = features.has_alpha;

        /* Write from compressed Y,U,V arrays to pix raster data */
    pix = pixCreate(w, h, 32);
    pixSetInputFormat(pix, IFF_WEBP);
    if (has_alpha) pixSetSpp(pix, 4);
    data = pixGetData(pix);
    wpl = pixGetWpl(pix);
    stride = wpl * 4;
    size = stride * h;
    out = WebPDecodeRGBAInto(filedata, filesize, (uint8_t *)data, size,
                             stride);
    if (out == NULL) {  /* error: out should also point to data */
        pixDestroy(&pix);
        return (PIX *)ERROR_PTR("WebP decode failed", procName, NULL);
    }

        /* The WebP API expects data in RGBA order.  The pix stores
         * in host-dependent order with R as the MSB and A as the LSB.
         * On little-endian machines, the bytes in the word must
         * be swapped; e.g., R goes from byte 0 (LSB) to byte 3 (MSB).
         * No swapping is necessary for big-endians. */
    pixEndianByteSwap(pix);
    return pix;
}
Esempio n. 7
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std::auto_ptr<Image> WebPFormat::read(byte_source* src, ImageFactory* factory, const options_map& opts) {
    std::vector<byte> data = full_data(*src);
    int w, h;
    int ok = WebPGetInfo(&data[0], data.size(), &w, &h);
    if (!ok) {
        throw CannotReadError("imread.imread._webp: File does not validate as WebP");
    }
    std::auto_ptr<Image> output(factory->create(8, h, w, 4));
    const int stride = w*4;
    const uint8_t* p = WebPDecodeRGBAInto(
            &data[0], data.size(),
            output->rowp_as<byte>(0), h*stride, stride);
    if (p != output->rowp_as<uint8_t>(0)) {
        throw CannotReadError("imread.imread._webp: Error in decoding file");
    }

    return output;
}
Esempio n. 8
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CPLErr WEBPDataset::Uncompress()
{
    if (bHasBeenUncompressed)
        return eUncompressErrRet;
    bHasBeenUncompressed = TRUE;
    eUncompressErrRet = CE_Failure;

    pabyUncompressed = (GByte*)VSIMalloc3(nRasterXSize, nRasterYSize, nBands);
    if (pabyUncompressed == NULL)
        return CE_Failure;

    VSIFSeekL(fpImage, 0, SEEK_END);
    vsi_l_offset nSize = VSIFTellL(fpImage);
    if (nSize != (vsi_l_offset)(uint32_t)nSize)
        return CE_Failure;
    VSIFSeekL(fpImage, 0, SEEK_SET);
    uint8_t* pabyCompressed = (uint8_t*)VSIMalloc(nSize);
    if (pabyCompressed == NULL)
        return CE_Failure;
    VSIFReadL(pabyCompressed, 1, nSize, fpImage);
    uint8_t* pRet;

    if (nBands == 4)
        pRet = WebPDecodeRGBAInto(pabyCompressed, (uint32_t)nSize,
                        (uint8_t*)pabyUncompressed, nRasterXSize * nRasterYSize * nBands,
                        nRasterXSize * nBands);
    else
        pRet = WebPDecodeRGBInto(pabyCompressed, (uint32_t)nSize,
                        (uint8_t*)pabyUncompressed, nRasterXSize * nRasterYSize * nBands,
                        nRasterXSize * nBands);
    VSIFree(pabyCompressed);
    if (pRet == NULL)
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                    "WebPDecodeRGBInto() failed");
        return CE_Failure;
    }
    eUncompressErrRet = CE_None;

    return CE_None;
}
Esempio n. 9
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/*!
 *  pixReadMemWebP()
 *
 *      Input:  filedata (webp compressed data in memory)
 *              filesize (number of bytes in data)
 *      Return: pix (32 bpp), or null on error
 *
 *  Notes:
 *      (1) When the encoded data only has 3 channels (no alpha),
 *          WebPDecodeRGBAInto() generates a raster of 32-bit pixels, with
 *          the alpha channel set to opaque (255).
 *      (2) We don't need to use the gnu runtime functions like fmemopen()
 *          for redirecting data from a stream to memory, because
 *          the webp library has been written with memory-to-memory
 *          functions at the lowest level (which is good!).  And, in
 *          any event, fmemopen() doesn't work with l_binaryReadStream().
 */
PIX *
pixReadMemWebP(const l_uint8  *filedata,
               size_t          filesize)
{
l_uint8   *out = NULL;
l_int32    w, h, has_alpha, wpl, stride;
l_uint32  *data;
size_t     size;
PIX       *pix;
WebPBitstreamFeatures  features;

    PROCNAME("pixReadMemWebP");

    if (!filedata)
        return (PIX *)ERROR_PTR("filedata not defined", procName, NULL);

    if (WebPGetFeatures(filedata, filesize, &features))
        return (PIX *)ERROR_PTR("Invalid WebP file", procName, NULL);
    w = features.width;
    h = features.height;
    has_alpha = features.has_alpha;

        /* Write from compressed Y,U,V arrays to pix raster data */
    pix = pixCreate(w, h, 32);
    if (has_alpha) pixSetSpp(pix, 4);
    data = pixGetData(pix);
    wpl = pixGetWpl(pix);
    stride = wpl * 4;
    size = stride * h;
    out = WebPDecodeRGBAInto(filedata, filesize, (uint8_t *)data, size,
                             stride);
    if (out == NULL) {  /* error: out should also point to data */
        pixDestroy(&pix);
        return (PIX *)ERROR_PTR("WebP decode failed", procName, NULL);
    }

        /* WebP decoder emits opposite byte order for RGBA components */
    pixEndianByteSwap(pix);
    return pix;
}
Esempio n. 10
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static Ref<Image> _webp_lossy_unpack(const PoolVector<uint8_t> &p_buffer) {

	int size = p_buffer.size() - 4;
	ERR_FAIL_COND_V(size <= 0, Ref<Image>());
	PoolVector<uint8_t>::Read r = p_buffer.read();

	ERR_FAIL_COND_V(r[0] != 'W' || r[1] != 'E' || r[2] != 'B' || r[3] != 'P', Ref<Image>());
	WebPBitstreamFeatures features;
	if (WebPGetFeatures(&r[4], size, &features) != VP8_STATUS_OK) {
		ERR_EXPLAIN("Error unpacking WEBP image:");
		ERR_FAIL_V(Ref<Image>());
	}

	/*
	print_line("width: "+itos(features.width));
	print_line("height: "+itos(features.height));
	print_line("alpha: "+itos(features.has_alpha));
	*/

	PoolVector<uint8_t> dst_image;
	int datasize = features.width * features.height * (features.has_alpha ? 4 : 3);
	dst_image.resize(datasize);

	PoolVector<uint8_t>::Write dst_w = dst_image.write();

	bool errdec = false;
	if (features.has_alpha) {
		errdec = WebPDecodeRGBAInto(&r[4], size, dst_w.ptr(), datasize, 4 * features.width) == NULL;
	} else {
		errdec = WebPDecodeRGBInto(&r[4], size, dst_w.ptr(), datasize, 3 * features.width) == NULL;
	}

	//ERR_EXPLAIN("Error decoding webp! - "+p_file);
	ERR_FAIL_COND_V(errdec, Ref<Image>());

	dst_w = PoolVector<uint8_t>::Write();

	Ref<Image> img = memnew(Image(features.width, features.height, 0, features.has_alpha ? Image::FORMAT_RGBA8 : Image::FORMAT_RGB8, dst_image));
	return img;
}
Esempio n. 11
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int ImageFormatWEBP::load(const char *name, int& width, int& height, int& format) {
 	printf("ImageFormatWEBP::load\n");
    
    // Open File
 	FILE* file = fopen(name,"rb");
 	if (file == 0) {
        printf("ImageFormatWEBP::load(): can't open file '%s'\n",name);
 		return 0;
 	}
    
    // init width / height / format value to 0
    width  = 0;
 	height = 0;
    format = 0;
    
    // size of file
    fseek(file,0,SEEK_END);
 	const long data_size = ftell(file);
 	fseek(file,0,SEEK_SET);
    
    unsigned char * img_data = new unsigned char[data_size];
    fread(img_data,data_size,1,file);
    fclose(file);
    
    // Get header info
    int webpinfo = WebPGetInfo(img_data, data_size, &width, &height);
    if (webpinfo == 0) {
        printf("ImageFormatWEBP::load(): wrong header in \"%s\" file\n",name);
 		delete img_data;
 		return 0;
    }

    // Get betstream
    WebPBitstreamFeatures features;
    VP8StatusCode status = WebPGetFeatures(img_data, data_size, &features);

    if (status != VP8_STATUS_OK) {
        printf("ImageFormatWEBP::load(): bad bitstream in \"%s\" file, error:\"%d\"\n",name,status);
 		delete img_data;
 		return 0;
    }

    format = features.has_alpha ? 4 : 3;
    
    int data_decoded_size = width * height * format;

    // raw data image container
    unsigned char * img_data_decoded = new unsigned char[data_decoded_size];
    memset(img_data_decoded,0x00,data_decoded_size);

    // decode image inside container (RGB and RGBA)
    if (format == 3 ) {
        if ( WebPDecodeRGBInto(img_data, data_size, img_data_decoded, data_decoded_size, width * format) == NULL ) {
            printf("ImageFormatWEBP::load(): can't decode RGB \"%s\" file\n",name);
            delete img_data;
            delete img_data_decoded;
            return 0;
        }
    } else {
        if ( WebPDecodeRGBAInto(img_data, data_size, img_data_decoded, data_decoded_size, width * format) == NULL ) {
            printf("ImageFormatWEBP::load(): can't decode RGBA \"%s\" file\n",name);
            delete img_data;
            delete img_data_decoded;
           return 0;
        }
    }
    
    // create temporary file for glue code javascript
    FILE* raw = fopen(kTempararyName,"wb");
    if (raw) {
        fwrite(img_data_decoded,data_decoded_size ,1 , raw);
        fclose(raw);
    }
    
    delete img_data;
    delete img_data_decoded;
    
	return 1;
}