Commit 3b9560c6 authored by Dmitry Timoshkov's avatar Dmitry Timoshkov Committed by Alexandre Julliard

windowscodecs: Add support for 16bps RGBA format to TIFF decoder.

parent 0cd8502b
......@@ -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)
{
......
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