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windowscodecs: Add support for 3bps RGB 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>
This commit is contained in:
Dmitry Timoshkov 2020-04-21 12:02:08 +08:00 committed by Alexandre Julliard
parent 948e5dffcd
commit a1fb3bb4da
1 changed files with 75 additions and 3 deletions
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78
dlls/windowscodecs/tiffformat.c
View File

@ -407,8 +407,6 @@ static HRESULT tiff_get_decode_info(TIFF *tiff, tiff_decode_info *decode_info)
}
break;
case 2: /* RGB */
decode_info->bpp = bps * samples;
if (samples == 4)
{
ret = pTIFFGetField(tiff, TIFFTAG_EXTRASAMPLES, &extra_sample_count, &extra_samples);
@ -425,8 +423,11 @@ static HRESULT tiff_get_decode_info(TIFF *tiff, tiff_decode_info *decode_info)
return E_FAIL;
}
decode_info->bpp = max(bps, 8) * samples;
decode_info->source_bpp = bps * samples;
switch(bps)
{
case 1:
case 8:
decode_info->reverse_bgr = 1;
if (samples == 3)
@ -1039,8 +1040,79 @@ static HRESULT TiffFrameDecode_ReadTile(TiffFrameDecode *This, UINT tile_x, UINT
if (ret == -1)
return E_FAIL;
/* 3bps RGB */
if (This->decode_info.source_bpp == 3 && This->decode_info.samples == 3 && This->decode_info.bpp == 24)
{
BYTE *srcdata, *src, *dst;
DWORD x, y, count, width_bytes = (This->decode_info.tile_width * 3 + 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 * 3;
for (x = 0; x < This->decode_info.tile_width; x += 8)
{
dst[2] = (src[0] & 0x80) ? 0xff : 0; /* R */
dst[1] = (src[0] & 0x40) ? 0xff : 0; /* G */
dst[0] = (src[0] & 0x20) ? 0xff : 0; /* B */
if (x + 1 < This->decode_info.tile_width)
{
dst[5] = (src[0] & 0x10) ? 0xff : 0; /* R */
dst[4] = (src[0] & 0x08) ? 0xff : 0; /* G */
dst[3] = (src[0] & 0x04) ? 0xff : 0; /* B */
}
if (x + 2 < This->decode_info.tile_width)
{
dst[8] = (src[0] & 0x02) ? 0xff : 0; /* R */
dst[7] = (src[0] & 0x01) ? 0xff : 0; /* G */
dst[6] = (src[1] & 0x80) ? 0xff : 0; /* B */
}
if (x + 3 < This->decode_info.tile_width)
{
dst[11] = (src[1] & 0x40) ? 0xff : 0; /* R */
dst[10] = (src[1] & 0x20) ? 0xff : 0; /* G */
dst[9] = (src[1] & 0x10) ? 0xff : 0; /* B */
}
if (x + 4 < This->decode_info.tile_width)
{
dst[14] = (src[1] & 0x08) ? 0xff : 0; /* R */
dst[13] = (src[1] & 0x04) ? 0xff : 0; /* G */
dst[12] = (src[1] & 0x02) ? 0xff : 0; /* B */
}
if (x + 5 < This->decode_info.tile_width)
{
dst[17] = (src[1] & 0x01) ? 0xff : 0; /* R */
dst[16] = (src[2] & 0x80) ? 0xff : 0; /* G */
dst[15] = (src[2] & 0x40) ? 0xff : 0; /* B */
}
if (x + 6 < This->decode_info.tile_width)
{
dst[20] = (src[2] & 0x20) ? 0xff : 0; /* R */
dst[19] = (src[2] & 0x10) ? 0xff : 0; /* G */
dst[18] = (src[2] & 0x08) ? 0xff : 0; /* B */
}
if (x + 7 < This->decode_info.tile_width)
{
dst[23] = (src[2] & 0x04) ? 0xff : 0; /* R */
dst[22] = (src[2] & 0x02) ? 0xff : 0; /* G */
dst[21] = (src[2] & 0x01) ? 0xff : 0; /* B */
}
src += 3;
dst += 24;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
}
/* 8bpp grayscale with extra alpha */
if (This->decode_info.source_bpp == 16 && This->decode_info.samples == 2 && This->decode_info.bpp == 32)
else if (This->decode_info.source_bpp == 16 && This->decode_info.samples == 2 && This->decode_info.bpp == 32)
{
BYTE *src;
DWORD *dst, count = This->decode_info.tile_width * This->decode_info.tile_height;