Module: wine Branch: master Commit: 3b9560c6f363433c47b08a4df940a6f86ab3aaab URL: https://source.winehq.org/git/wine.git/?a=commit;h=3b9560c6f363433c47b08a4df...
Author: Dmitry Timoshkov dmitry@baikal.ru Date: Tue Apr 21 12:02:21 2020 +0800
windowscodecs: Add support for 16bps RGBA format to TIFF decoder.
Signed-off-by: Dmitry Timoshkov dmitry@baikal.ru Signed-off-by: Vincent Povirk vincent@codeweavers.com Signed-off-by: Alexandre Julliard julliard@winehq.org
---
dlls/windowscodecs/tiffformat.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+)
diff --git a/dlls/windowscodecs/tiffformat.c b/dlls/windowscodecs/tiffformat.c index 33d3a3c992..3d43c967d9 100644 --- a/dlls/windowscodecs/tiffformat.c +++ b/dlls/windowscodecs/tiffformat.c @@ -1186,6 +1186,36 @@ static HRESULT TiffFrameDecode_ReadTile(TiffFrameDecode *This, UINT tile_x, UINT
HeapFree(GetProcessHeap(), 0, srcdata); } + /* 16bps RGBA */ + else if (This->decode_info.source_bpp == 16 && This->decode_info.samples == 4 && This->decode_info.bpp == 32) + { + BYTE *srcdata, *src, *dst; + DWORD x, y, count, width_bytes = (This->decode_info.tile_width * 12 + 7) / 8; + + count = width_bytes * This->decode_info.tile_height; + + srcdata = HeapAlloc(GetProcessHeap(), 0, count); + if (!srcdata) return E_OUTOFMEMORY; + memcpy(srcdata, This->cached_tile, count); + + for (y = 0; y < This->decode_info.tile_height; y++) + { + src = srcdata + y * width_bytes; + dst = This->cached_tile + y * This->decode_info.tile_width * 4; + + for (x = 0; x < This->decode_info.tile_width; x++) + { + dst[0] = ((src[1] & 0xf0) >> 4) * 17; /* B */ + dst[1] = (src[0] & 0x0f) * 17; /* G */ + dst[2] = ((src[0] & 0xf0) >> 4) * 17; /* R */ + dst[3] = (src[1] & 0x0f) * 17; /* A */ + src += 2; + dst += 4; + } + } + + HeapFree(GetProcessHeap(), 0, srcdata); + } /* 8bpp grayscale with extra alpha */ else if (This->decode_info.source_bpp == 16 && This->decode_info.samples == 2 && This->decode_info.bpp == 32) {