diff options
| author | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2018-12-11 10:48:15 +0100 |
|---|---|---|
| committer | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2019-01-03 09:36:03 +0000 |
| commit | 9f69817344eb75fbc4613892c1f54ee69cae2e66 (patch) | |
| tree | 8c6edc785b80e373983c85808cb4e3ce86e58fe8 /src | |
| parent | 0f8ac893a7fad1d3cdfcc55b511b2d88e4645ba9 (diff) | |
Add Grayscale16 support to TIFF
Change-Id: I927d9ab0af78baf90d8fd8d44088218dff0e7082
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
Diffstat (limited to 'src')
| -rw-r--r-- | src/plugins/imageformats/tiff/qtiffhandler.cpp | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/plugins/imageformats/tiff/qtiffhandler.cpp b/src/plugins/imageformats/tiff/qtiffhandler.cpp index edb5443..837f9ff 100644 --- a/src/plugins/imageformats/tiff/qtiffhandler.cpp +++ b/src/plugins/imageformats/tiff/qtiffhandler.cpp @@ -272,6 +272,8 @@ bool QTiffHandlerPrivate::readHeaders(QIODevice *device) format = QImage::Format_Mono; else if (photometric == PHOTOMETRIC_MINISBLACK && bitPerSample == 8 && samplesPerPixel == 1) format = QImage::Format_Grayscale8; + else if (photometric == PHOTOMETRIC_MINISBLACK && bitPerSample == 16 && samplesPerPixel == 1) + format = QImage::Format_Grayscale16; else if ((grayscale || photometric == PHOTOMETRIC_PALETTE) && bitPerSample == 8 && samplesPerPixel == 1) format = QImage::Format_Indexed8; else if (samplesPerPixel < 4) @@ -402,9 +404,11 @@ bool QTiffHandler::read(QImage *image) } } bool format8bit = (format == QImage::Format_Mono || format == QImage::Format_Indexed8 || format == QImage::Format_Grayscale8); + bool format16bit = (format == QImage::Format_Grayscale16); bool format64bit = (format == QImage::Format_RGBX64 || format == QImage::Format_RGBA64 || format == QImage::Format_RGBA64_Premultiplied); - if (format8bit || format64bit) { + // Formats we read directly, instead of over RGBA32: + if (format8bit || format16bit || format64bit) { int bytesPerPixel = image->depth() / 8; if (format == QImage::Format_RGBX64) bytesPerPixel = 6; @@ -513,6 +517,7 @@ static QVector<QRgb> effectiveColorTable(const QImage &image) colors[i] = qRgba(0, 0, 0, i); break; case QImage::Format_Grayscale8: + case QImage::Format_Grayscale16: colors.resize(256); for (int i = 0; i < 256; ++i) colors[i] = qRgb(i, i, i); @@ -622,6 +627,7 @@ bool QTiffHandler::write(const QImage &image) TIFFClose(tiff); } else if (format == QImage::Format_Indexed8 || format == QImage::Format_Grayscale8 + || format == QImage::Format_Grayscale16 || format == QImage::Format_Alpha8) { QVector<QRgb> colorTable = effectiveColorTable(image); bool isGrayscale = checkGrayscale(colorTable); @@ -631,7 +637,7 @@ bool QTiffHandler::write(const QImage &image) photometric = PHOTOMETRIC_MINISWHITE; if (!TIFFSetField(tiff, TIFFTAG_PHOTOMETRIC, photometric) || !TIFFSetField(tiff, TIFFTAG_COMPRESSION, compression == NoCompression ? COMPRESSION_NONE : COMPRESSION_LZW) - || !TIFFSetField(tiff, TIFFTAG_BITSPERSAMPLE, 8) + || !TIFFSetField(tiff, TIFFTAG_BITSPERSAMPLE, image.depth()) || !TIFFSetField(tiff, TIFFTAG_ROWSPERSTRIP, defaultStripSize(tiff))) { TIFFClose(tiff); return false; |