From c6019a54323629425383b7200498e10e3efa70af Mon Sep 17 00:00:00 2001 From: Rhys Weatherley Date: Tue, 22 Dec 2009 16:33:53 +1000 Subject: Remove unused legacy code from the jpeg image plugin A long time ago, in a Qt version far, far, away there was a parameter string mechanism for asking for header details, requesting scaling, and so on. This has since been replaced with actual real API's and it is no longer possible to pass such parameter strings to the image plugins. This change removes the crufty beloved old code. Reviewed-by: Sarah Smith --- src/plugins/imageformats/jpeg/qjpeghandler.cpp | 144 ++----------------------- src/plugins/imageformats/jpeg/qjpeghandler.h | 1 - 2 files changed, 11 insertions(+), 134 deletions(-) diff --git a/src/plugins/imageformats/jpeg/qjpeghandler.cpp b/src/plugins/imageformats/jpeg/qjpeghandler.cpp index 54bbcda..aa239ec 100644 --- a/src/plugins/imageformats/jpeg/qjpeghandler.cpp +++ b/src/plugins/imageformats/jpeg/qjpeghandler.cpp @@ -84,7 +84,7 @@ class QImageSmoothScaler public: QImageSmoothScaler(const int w, const int h, const QImage &src); QImageSmoothScaler(const int srcWidth, const int srcHeight, - const char *parameters); + const int dstWidth, const int dstHeight); virtual ~QImageSmoothScaler(void); @@ -123,33 +123,9 @@ QImageSmoothScaler::QImageSmoothScaler(const int w, const int h, } QImageSmoothScaler::QImageSmoothScaler(const int srcWidth, const int srcHeight, - const char *parameters) + const int dstWidth, const int dstHeight) { - char sModeStr[1024]; - int t1; - int t2; - int dstWidth; - int dstHeight; - - sModeStr[0] = '\0'; - d = new QImageSmoothScalerPrivate; -#if defined(Q_OS_WIN) && !defined(Q_OS_WINCE) && defined(_MSC_VER) && _MSC_VER >= 1400 - sscanf_s(parameters, "Scale( %i, %i, %1023s )", &dstWidth, &dstHeight, sModeStr, sizeof(sModeStr)); -#else - sscanf(parameters, "Scale( %i, %i, %s )", &dstWidth, &dstHeight, sModeStr); -#endif - QString sModeQStr = QString::fromLatin1(sModeStr); - - t1 = srcWidth * dstHeight; - t2 = srcHeight * dstWidth; - - if (((sModeQStr == QLatin1String("ScaleMin")) && (t1 > t2)) || ((sModeQStr == QLatin1String("ScaleMax")) && (t2 < t2))) { - dstHeight = t2 / srcWidth; - } else if (sModeQStr != QLatin1String("ScaleFree")) { - dstWidth = t1 / srcHeight; - } - d->setup(srcWidth, srcHeight, dstWidth, dstHeight, 0); } @@ -467,8 +443,8 @@ QImage QImageSmoothScaler::scale() class jpegSmoothScaler : public QImageSmoothScaler { public: - jpegSmoothScaler(struct jpeg_decompress_struct *info, const char *params): - QImageSmoothScaler(info->output_width, info->output_height, params) + jpegSmoothScaler(struct jpeg_decompress_struct *info, int dstWidth, int dstHeight) + : QImageSmoothScaler(info->output_width, info->output_height, dstWidth, dstHeight) { cinfo = info; cols24Bit = scaledWidth() * 3; @@ -637,18 +613,6 @@ inline my_jpeg_source_mgr::my_jpeg_source_mgr(QIODevice *device) } -static void scaleSize(int &reqW, int &reqH, int imgW, int imgH, Qt::AspectRatioMode mode) -{ - if (mode == Qt::IgnoreAspectRatio) - return; - int t1 = imgW * reqH; - int t2 = reqW * imgH; - if ((mode == Qt::KeepAspectRatio && (t1 > t2)) || (mode == Qt::KeepAspectRatioByExpanding && (t1 < t2))) - reqH = t2 / imgW; - else - reqW = t1 / imgH; -} - static bool read_jpeg_size(QIODevice *device, int &w, int &h) { bool rt = false; @@ -763,8 +727,7 @@ static bool ensureValidImage(QImage *dest, struct jpeg_decompress_struct *info, } static bool read_jpeg_image(QIODevice *device, QImage *outImage, - const QByteArray ¶meters, QSize scaledSize, - int inQuality ) + QSize scaledSize, int inQuality ) { #ifdef QT_NO_IMAGE_SMOOTHSCALE Q_UNUSED( scaledSize ); @@ -794,16 +757,9 @@ static bool read_jpeg_image(QIODevice *device, QImage *outImage, if (quality < 0) quality = 75; - QString params = QString::fromLatin1(parameters); - params.simplified(); - int sWidth = 0, sHeight = 0; - char sModeStr[1024] = ""; - Qt::AspectRatioMode sMode; - #ifndef QT_NO_IMAGE_SMOOTHSCALE // If high quality not required, shrink image during decompression - if (scaledSize.isValid() && !scaledSize.isEmpty() && quality < HIGH_QUALITY_THRESHOLD - && !params.contains(QLatin1String("GetHeaderInformation")) ) { + if (scaledSize.isValid() && !scaledSize.isEmpty() && quality < HIGH_QUALITY_THRESHOLD) { cinfo.scale_denom = qMin(cinfo.image_width / scaledSize.width(), cinfo.image_width / scaledSize.height()); if (cinfo.scale_denom < 2) { @@ -829,93 +785,15 @@ static bool read_jpeg_image(QIODevice *device, QImage *outImage, (void) jpeg_start_decompress(&cinfo); - if (params.contains(QLatin1String("GetHeaderInformation"))) { - if (!ensureValidImage(outImage, &cinfo, true)) - longjmp(jerr.setjmp_buffer, 1); - } else if (params.contains(QLatin1String("Scale"))) { -#if defined(_MSC_VER) && _MSC_VER >= 1400 && !defined(Q_OS_WINCE) - sscanf_s(params.toLatin1().data(), "Scale(%i, %i, %1023s)", - &sWidth, &sHeight, sModeStr, sizeof(sModeStr)); -#else - sscanf(params.toLatin1().data(), "Scale(%i, %i, %1023s)", - &sWidth, &sHeight, sModeStr); -#endif - - QString sModeQStr(QString::fromLatin1(sModeStr)); - if (sModeQStr == QLatin1String("IgnoreAspectRatio")) { - sMode = Qt::IgnoreAspectRatio; - } else if (sModeQStr == QLatin1String("KeepAspectRatio")) { - sMode = Qt::KeepAspectRatio; - } else if (sModeQStr == QLatin1String("KeepAspectRatioByExpanding")) { - sMode = Qt::KeepAspectRatioByExpanding; - } else { - qDebug("read_jpeg_image: invalid aspect ratio mode \"%s\", see QImage::AspectRatioMode documentation", sModeStr); - sMode = Qt::KeepAspectRatio; - } - -// qDebug("Parameters ask to scale the image to %i x %i AspectRatioMode: %s", sWidth, sHeight, sModeStr); - scaleSize(sWidth, sHeight, cinfo.output_width, cinfo.output_height, sMode); -// qDebug("Scaling the jpeg to %i x %i", sWidth, sHeight, sModeStr); - - if (cinfo.output_components == 3 || cinfo.output_components == 4) { - if (outImage->size() != QSize(sWidth, sHeight) || outImage->format() != QImage::Format_RGB32) - *outImage = QImage(sWidth, sHeight, QImage::Format_RGB32); - } else if (cinfo.output_components == 1) { - if (outImage->size() != QSize(sWidth, sHeight) || outImage->format() != QImage::Format_Indexed8) - *outImage = QImage(sWidth, sHeight, QImage::Format_Indexed8); - outImage->setColorCount(256); - for (int i = 0; i < 256; ++i) - outImage->setColor(i, qRgb(i,i,i)); - } else { - // Unsupported format - } - if (outImage->isNull()) - longjmp(jerr.setjmp_buffer, 1); - - if (!outImage->isNull()) { - QImage tmpImage(cinfo.output_width, 1, QImage::Format_RGB32); - uchar* inData = tmpImage.bits(); - uchar* outData = outImage->bits(); - int out_bpl = outImage->bytesPerLine(); - while (cinfo.output_scanline < cinfo.output_height) { - int outputLine = sHeight * cinfo.output_scanline / cinfo.output_height; - (void) jpeg_read_scanlines(&cinfo, &inData, 1); - if (cinfo.output_components == 3) { - uchar *in = inData; - QRgb *out = (QRgb*)outData + outputLine * out_bpl; - for (uint i=0; i= HIGH_QUALITY_THRESHOLD) { - jpegSmoothScaler scaler(&cinfo, QString().sprintf("Scale( %d, %d, ScaleFree )", - scaledSize.width(), - scaledSize.height()).toLatin1().data()); + jpegSmoothScaler scaler(&cinfo, scaledSize.width(), scaledSize.height()); *outImage = scaler.scale(); + } else #endif - } else { + { if (!ensureValidImage(outImage, &cinfo)) longjmp(jerr.setjmp_buffer, 1); @@ -1224,7 +1102,7 @@ bool QJpegHandler::read(QImage *image) { if (!canRead()) return false; - return read_jpeg_image(device(), image, parameters, scaledSize, quality); + return read_jpeg_image(device(), image, scaledSize, quality); } bool QJpegHandler::write(const QImage &image) diff --git a/src/plugins/imageformats/jpeg/qjpeghandler.h b/src/plugins/imageformats/jpeg/qjpeghandler.h index 654c078..0a14a88 100644 --- a/src/plugins/imageformats/jpeg/qjpeghandler.h +++ b/src/plugins/imageformats/jpeg/qjpeghandler.h @@ -66,7 +66,6 @@ public: private: int quality; - QByteArray parameters; QSize scaledSize; }; -- cgit v0.12