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support more TIFF tags

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Thomas Bernard 2019-01-04 22:54:02 +01:00
parent f1e641b44e
commit 8cb1c36029
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GPG Key ID: 0FF11B67A5C0863C
1 changed files with 26 additions and 3 deletions
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29
src/tifformat.c
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@ -362,6 +362,12 @@ void Load_TIFF_Sub(T_IO_Context * context, TIFF * tif, unsigned long file_size)
for (;;)
{
word subifd_count;
uint64 * subifd_array;
if (TIFFGetField(tif, TIFFTAG_SUBIFD, &subifd_count, &subifd_array))
{
GFX2_Log(GFX2_DEBUG, "TIFFTAG_SUBIFD : count = %u\n", subifd_count);
}
Load_TIFF_image(context, tif, spp, bps);
if (File_error != 0)
return;
@ -531,6 +537,8 @@ void Save_TIFF_Sub(T_IO_Context * context, TIFF * tif)
const word bps = 8;
const word spp = 1;
const dword rowsperstrip = 64;
const word photometric = PHOTOMETRIC_PALETTE;
float xresol = 1.0f, yresol = 1.0f;
snprintf(version, sizeof(version), "GrafX2 %s.%s", Program_version, SVN_revision);
width = context->Width;
@ -545,20 +553,35 @@ void Save_TIFF_Sub(T_IO_Context * context, TIFF * tif)
for (;;)
{
GFX2_Log(GFX2_DEBUG, "TIFF save layer #%d\n", layer);
//TIFFTAG_SUBFILETYPE
TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, width);
TIFFSetField(tif, TIFFTAG_IMAGELENGTH, height);
TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, bps);
TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, spp);
TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_LZW);
TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, photometric);
TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, spp);
//TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG); // not relevant if SAMPLESPERPIXEL == 1
TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
if (context->Comment[0] != '\0')
TIFFSetField(tif, TIFFTAG_IMAGEDESCRIPTION, context->Comment);
TIFFSetField(tif, TIFFTAG_SOFTWARE, version);
TIFFSetField(tif, TIFFTAG_RESOLUTIONUNIT, RESUNIT_NONE);
// RESUNIT_NONE : No absolute unit of measurement.
// Used for images that may have a non-square aspect ratio,
// but no meaningful absolute dimensions.
TIFFSetField(tif, TIFFTAG_XRESOLUTION, xresol);
TIFFSetField(tif, TIFFTAG_YRESOLUTION, yresol);
TIFFSetField(tif, TIFFTAG_COLORMAP, colormap.r, colormap.g, colormap.b);
// TIFFTAG_SUBIFD // point to thumbnail, etc.
// TIFFSetField(tif, TIFFTAG_PAGENUMBER, current_page, page_count);
// extensions :
// TIFFTAG_IT8BKGCOLORINDICATOR
TIFFSetField(tif, TIFFTAG_IT8BKGCOLORVALUE, (word)context->Transparent_color);
// TIFFSetField: test.tif: Unknown tag 34026.
// custom : https://stackoverflow.com/questions/24059421/adding-custom-tags-to-a-tiff-file
#if 0
for (y = 0; y < height; y++)
{