diff options
| -rw-r--r-- | src/qcam/dng_writer.cpp | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/src/qcam/dng_writer.cpp b/src/qcam/dng_writer.cpp index d04a8e16..bc1a63e6 100644 --- a/src/qcam/dng_writer.cpp +++ b/src/qcam/dng_writer.cpp @@ -74,7 +74,10 @@ void thumbScanlineSBGGRxxP(const FormatInfo &info, void *output, unsigned int skip = info.bitsPerSample * 16 / 8; for (unsigned int x = 0; x < width; x++) { - *out++ = (in[0] + in[1] + in[stride] + in[stride + 1]) >> 2; + uint8_t value = (in[0] + in[1] + in[stride] + in[stride + 1]) >> 2; + *out++ = value; + *out++ = value; + *out++ = value; in += skip; } } @@ -175,16 +178,17 @@ int DNGWriter::write(const char *filename, const Camera *camera, TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT); /* - * Thumbnail-specific tags. The thumbnail is stored as a greyscale image - * with 1/16 of the raw image resolution. + * Thumbnail-specific tags. The thumbnail is stored as an RGB image + * with 1/16 of the raw image resolution. Greyscale would save space, + * but doesn't seem well supported by RawTherapee. */ TIFFSetField(tif, TIFFTAG_SUBFILETYPE, FILETYPE_REDUCEDIMAGE); TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, config.size.width / 16); TIFFSetField(tif, TIFFTAG_IMAGELENGTH, config.size.height / 16); TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 8); TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE); - TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK); - TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 1); + TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB); + TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 3); TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG); TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT); |