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Merge branch 'issue-48' into 'master'

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tiff2pdf: fix "raw" copy of Deflate streams

Closes #48

See merge request libtiff/libtiff!136
This commit is contained in:
Even Rouault 2020-03-29 16:11:18 +00:00
commit 94679bc2d8
1 changed files with 5 additions and 1 deletions
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6
tools/tiff2pdf.c
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@ -232,7 +232,7 @@ typedef struct {
t2p_compress_t pdf_defaultcompression;
uint16 pdf_defaultcompressionquality;
t2p_compress_t pdf_compression;
uint16 pdf_compressionquality;
uint16 pdf_compressionquality; /* for deflate : 100 * zipquality + predictor */
uint16 pdf_nopassthrough;
t2p_transcode_t pdf_transcode;
t2p_sample_t pdf_sample;
@ -1822,8 +1822,12 @@ void t2p_read_tiff_data(T2P* t2p, TIFF* input){
if(t2p->tiff_compression== COMPRESSION_ADOBE_DEFLATE
|| t2p->tiff_compression==COMPRESSION_DEFLATE){
if(TIFFIsTiled(input) || (TIFFNumberOfStrips(input)==1) ){
uint16 predictor;
t2p->pdf_transcode = T2P_TRANSCODE_RAW;
t2p->pdf_compression=T2P_COMPRESS_ZIP;
TIFFGetField(input, TIFFTAG_PREDICTOR, &predictor);
t2p->pdf_compressionquality = predictor;
/* TIFFTAG_ZIPQUALITY is always Z_DEFAULT_COMPRESSION on reading */
}
}
#endif