Module: wine Branch: master Commit: b26d789db2cdcafde16bc7bd3ebc0de634349725 URL: http://source.winehq.org/git/wine.git/?a=commit;h=b26d789db2cdcafde16bc7bd3e...
Author: Vincent Povirk vincent@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)