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| author | Robin Watts <Robin.Watts@artifex.com> | 2023-04-06 12:52:44 +0100 |
|---|---|---|
| committer | Robin Watts <Robin.Watts@artifex.com> | 2023-04-06 15:08:28 +0100 |
| commit | a55801e180934211ca2ce4137b8871d20cc15001 (patch) | |
| tree | 4043f171283170d797ad5a5941cdaf478f38a733 | |
| parent | 5f4a8894197dd7286f062ddefcf183effab2a27f (diff) | |
| download | ghostpdl-a55801e180934211ca2ce4137b8871d20cc15001.tar.gz | |
GPDL: Fix endian issues with 16bpc tiffs.
| -rw-r--r-- | gpdl/tifftop.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/gpdl/tifftop.c b/gpdl/tifftop.c index 743a7b99c..e9915e14f 100644 --- a/gpdl/tifftop.c +++ b/gpdl/tifftop.c @@ -942,6 +942,20 @@ do_impl_process(pl_interp_implementation_t * impl, stream_cursor_read * pr, int break; } + switch (tiff->bpc) + { + case 1: + case 2: + case 4: + case 8: + case 16: + /* We can cope with all these. */ + break; + default: + code = gs_error_unknownerror; + goto fail_decode; + } + /* Scale to fit, if too large. */ scale = 1.0f; if (tiff->width * tiff->dev->HWResolution[0] > tiff->dev->width * tiff->xresolution) @@ -1109,6 +1123,20 @@ do_impl_process(pl_interp_implementation_t * impl, stream_cursor_read * pr, int row += span; in_row += span; } + row -= span * tiff->raw_num_comps; + } + + if (tiff->bpc == 16) + { + byte *p = row; + int n = tiff->tile_width * tiff->raw_num_comps; + while (n--) + { + byte b = p[0]; + p[0] = p[1]; + p[1] = b; + p += 2; + } } if (!tiff->tiled) { |