Vincent Povirk : windowscodecs: Implement CopyPalette for the TGA decoder.
Alexandre Julliard
julliard at winehq.org
Mon Oct 25 10:58:17 CDT 2010
Module: wine
Branch: master
Commit: b26d789db2cdcafde16bc7bd3ebc0de634349725
URL: http://source.winehq.org/git/wine.git/?a=commit;h=b26d789db2cdcafde16bc7bd3ebc0de634349725
Author: Vincent Povirk <vincent at codeweavers.com>
Date: Wed Oct 20 16:34:36 2010 -0500
windowscodecs: Implement CopyPalette for the TGA decoder.
---
dlls/windowscodecs/tgaformat.c | 164 ++++++++++++++++++++++++++++++++++++++-
1 files changed, 159 insertions(+), 5 deletions(-)
diff --git a/dlls/windowscodecs/tgaformat.c b/dlls/windowscodecs/tgaformat.c
index 2e469bf..7570e06 100644
--- a/dlls/windowscodecs/tgaformat.c
+++ b/dlls/windowscodecs/tgaformat.c
@@ -193,6 +193,7 @@ static HRESULT WINAPI TgaDecoder_Initialize(IWICBitmapDecoder *iface, IStream *p
LARGE_INTEGER seek;
tga_footer footer;
int attribute_bitcount;
+ int mapped_depth=0;
TRACE("(%p,%p,%u)\n", iface, pIStream, cacheOptions);
@@ -228,16 +229,19 @@ static HRESULT WINAPI TgaDecoder_Initialize(IWICBitmapDecoder *iface, IStream *p
case IMAGETYPE_COLORMAPPED|IMAGETYPE_RLE:
if (This->header.colormap_type != 1)
hr = E_FAIL;
+ mapped_depth = This->header.colormap_entrysize;
break;
case IMAGETYPE_TRUECOLOR:
case IMAGETYPE_TRUECOLOR|IMAGETYPE_RLE:
if (This->header.colormap_type != 0 && This->header.colormap_type != 1)
hr = E_FAIL;
+ mapped_depth = This->header.depth;
break;
case IMAGETYPE_GRAYSCALE:
case IMAGETYPE_GRAYSCALE|IMAGETYPE_RLE:
if (This->header.colormap_type != 0)
hr = E_FAIL;
+ mapped_depth = 0;
break;
default:
hr = E_FAIL;
@@ -253,9 +257,8 @@ static HRESULT WINAPI TgaDecoder_Initialize(IWICBitmapDecoder *iface, IStream *p
attribute_bitcount = This->header.image_descriptor & IMAGE_ATTRIBUTE_BITCOUNT_MASK;
if (attribute_bitcount &&
- !((This->header.image_type & IMAGETYPE_TRUECOLOR) &&
- ((This->header.depth == 32 && attribute_bitcount == 8) ||
- (This->header.depth == 16 && attribute_bitcount == 1))))
+ !((mapped_depth == 32 && attribute_bitcount == 8) ||
+ (mapped_depth == 16 && attribute_bitcount == 1)))
hr = E_FAIL;
if (FAILED(hr))
@@ -573,8 +576,159 @@ static HRESULT WINAPI TgaDecoder_Frame_GetResolution(IWICBitmapFrameDecode *ifac
static HRESULT WINAPI TgaDecoder_Frame_CopyPalette(IWICBitmapFrameDecode *iface,
IWICPalette *pIPalette)
{
- FIXME("(%p,%p): stub\n", iface, pIPalette);
- return E_NOTIMPL;
+ TgaDecoder *This = decoder_from_frame(iface);
+ HRESULT hr=S_OK;
+ WICColor colors[256], *color;
+ BYTE *colormap_data;
+ WORD *wcolormap_data;
+ DWORD *dwcolormap_data;
+ LARGE_INTEGER seek;
+ ULONG bytesread;
+ int depth, attribute_bitcount, attribute_type;
+ int i;
+
+ TRACE("(%p,%p)\n", iface, pIPalette);
+
+ if (!This->colormap_length)
+ {
+ WARN("no colormap present in this file\n");
+ return WINCODEC_ERR_PALETTEUNAVAILABLE;
+ }
+
+ if (This->header.colormap_firstentry + This->header.colormap_length > 256)
+ {
+ FIXME("cannot read colormap with %i entries starting at %i\n",
+ This->header.colormap_firstentry + This->header.colormap_length,
+ This->header.colormap_firstentry);
+ return E_FAIL;
+ }
+
+ colormap_data = HeapAlloc(GetProcessHeap(), 0, This->colormap_length);
+ if (!colormap_data) return E_OUTOFMEMORY;
+
+ wcolormap_data = (WORD*)colormap_data;
+ dwcolormap_data = (DWORD*)colormap_data;
+
+ EnterCriticalSection(&This->lock);
+
+ seek.QuadPart = This->colormap_offset;
+ hr = IStream_Seek(This->stream, seek, STREAM_SEEK_SET, NULL);
+
+ if (SUCCEEDED(hr))
+ {
+ hr = IStream_Read(This->stream, colormap_data, This->colormap_length, &bytesread);
+ if (SUCCEEDED(hr) && bytesread != This->colormap_length)
+ {
+ WARN("expected %i bytes in colormap, got %i\n", This->colormap_length, bytesread);
+ hr = E_FAIL;
+ }
+ }
+
+ LeaveCriticalSection(&This->lock);
+
+ if (SUCCEEDED(hr))
+ {
+ attribute_bitcount = This->header.image_descriptor & IMAGE_ATTRIBUTE_BITCOUNT_MASK;
+
+ if (attribute_bitcount && This->extension_area_offset)
+ attribute_type = This->extension_area.attributes_type;
+ else if (attribute_bitcount)
+ attribute_type = ATTRIBUTE_ALPHA;
+ else
+ attribute_type = ATTRIBUTE_NO_ALPHA;
+
+ depth = This->header.colormap_entrysize;
+ if (depth == 15)
+ {
+ depth = 16;
+ attribute_type = ATTRIBUTE_NO_ALPHA;
+ }
+
+ memset(colors, 0, sizeof(colors));
+
+ color = &colors[This->header.colormap_firstentry];
+
+ /* Colormap entries can be in any truecolor format, and we have to convert them. */
+ switch (depth)
+ {
+ case 16:
+ switch (attribute_type)
+ {
+ case ATTRIBUTE_NO_ALPHA:
+ case ATTRIBUTE_UNDEFINED:
+ case ATTRIBUTE_UNDEFINED_PRESERVE:
+ for (i=0; i<This->header.colormap_length; i++)
+ {
+ WORD srcval = wcolormap_data[i];
+ *color++=0xff000000 | /* constant 255 alpha */
+ ((srcval << 9) & 0xf80000) | /* r */
+ ((srcval << 4) & 0x070000) | /* r - 3 bits */
+ ((srcval << 6) & 0x00f800) | /* g */
+ ((srcval << 1) & 0x000700) | /* g - 3 bits */
+ ((srcval << 3) & 0x0000f8) | /* b */
+ ((srcval >> 2) & 0x000007); /* b - 3 bits */
+ }
+ break;
+ case ATTRIBUTE_ALPHA:
+ case ATTRIBUTE_PALPHA:
+ for (i=0; i<This->header.colormap_length; i++)
+ {
+ WORD srcval = wcolormap_data[i];
+ *color++=((srcval & 0x8000) ? 0xff000000 : 0) | /* alpha */
+ ((srcval << 9) & 0xf80000) | /* r */
+ ((srcval << 4) & 0x070000) | /* r - 3 bits */
+ ((srcval << 6) & 0x00f800) | /* g */
+ ((srcval << 1) & 0x000700) | /* g - 3 bits */
+ ((srcval << 3) & 0x0000f8) | /* b */
+ ((srcval >> 2) & 0x000007); /* b - 3 bits */
+ }
+ break;
+ default:
+ FIXME("Unhandled 16-bit attribute type %u\n", attribute_type);
+ hr = E_NOTIMPL;
+ }
+ break;
+ case 24:
+ for (i=0; i<This->header.colormap_length; i++)
+ {
+ *color++=0xff000000 | /* alpha */
+ colormap_data[i*3+2] | /* red */
+ colormap_data[i*3+1] | /* green */
+ colormap_data[i*3]; /* blue */
+ }
+ break;
+ case 32:
+ switch (attribute_type)
+ {
+ case ATTRIBUTE_NO_ALPHA:
+ case ATTRIBUTE_UNDEFINED:
+ case ATTRIBUTE_UNDEFINED_PRESERVE:
+ for (i=0; i<This->header.colormap_length; i++)
+ *color++=dwcolormap_data[i]|0xff000000;
+ break;
+ case ATTRIBUTE_ALPHA:
+ for (i=0; i<This->header.colormap_length; i++)
+ *color++=dwcolormap_data[i];
+ break;
+ case ATTRIBUTE_PALPHA:
+ /* FIXME: Unpremultiply alpha */
+ default:
+ FIXME("Unhandled 16-bit attribute type %u\n", attribute_type);
+ hr = E_NOTIMPL;
+ }
+ break;
+ default:
+ FIXME("Unhandled truecolor depth %u\n", This->header.depth);
+ hr = E_NOTIMPL;
+ }
+ }
+
+ HeapFree(GetProcessHeap(), 0, colormap_data);
+
+ if (SUCCEEDED(hr))
+ hr = IWICPalette_InitializeCustom(pIPalette, colors, 256);
+
+ return hr;
}
static HRESULT TgaDecoder_ReadRLE(TgaDecoder *This, BYTE *imagebits, int datasize)
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