Module: wine Branch: master Commit: 6ecb81976ffabc852e63d1b3130f8288cf03f175 URL: http://source.winehq.org/git/wine.git/?a=commit;h=6ecb81976ffabc852e63d1b313...
Author: Vincent Povirk vincent@codeweavers.com Date: Wed Oct 20 14:59:12 2010 -0500
windowscodecs: Handle TGA attribute bits.
---
dlls/windowscodecs/tgaformat.c | 123 +++++++++++++++++++++++++++++++++++++--- include/wincodec.idl | 1 + 2 files changed, 115 insertions(+), 9 deletions(-)
diff --git a/dlls/windowscodecs/tgaformat.c b/dlls/windowscodecs/tgaformat.c index 57dca7d..9de35c2 100644 --- a/dlls/windowscodecs/tgaformat.c +++ b/dlls/windowscodecs/tgaformat.c @@ -63,6 +63,41 @@ typedef struct { #define IMAGE_RIGHTTOLEFT 0x10 #define IMAGE_TOPTOBOTTOM 0x20
+typedef struct { + DWORD extension_area_offset; + DWORD developer_directory_offset; + char magic[18]; +} tga_footer; + +static const BYTE tga_footer_magic[18] = "TRUEVISION-XFILE."; + +typedef struct { + WORD size; + char author_name[41]; + char author_comments[324]; + WORD timestamp[6]; + char job_name[41]; + WORD job_timestamp[6]; + char software_id[41]; + WORD software_version; + char software_version_letter; + DWORD key_color; + WORD pixel_width; + WORD pixel_height; + WORD gamma_numerator; + WORD gamma_denominator; + DWORD color_correction_offset; + DWORD thumbnail_offset; + DWORD scanline_offset; + BYTE attributes_type; +} tga_extension_area; + +#define ATTRIBUTE_NO_ALPHA 0 +#define ATTRIBUTE_UNDEFINED 1 +#define ATTRIBUTE_UNDEFINED_PRESERVE 2 +#define ATTRIBUTE_ALPHA 3 +#define ATTRIBUTE_PALPHA 4 + #include "poppack.h"
typedef struct { @@ -72,6 +107,7 @@ typedef struct { BOOL initialized; IStream *stream; tga_header header; + tga_extension_area extension_area; BYTE *imagebits; BYTE *origin; int stride; @@ -79,6 +115,8 @@ typedef struct { ULONG colormap_length; ULONG colormap_offset; ULONG image_offset; + ULONG extension_area_offset; + ULONG developer_directory_offset; CRITICAL_SECTION lock; } TgaDecoder;
@@ -153,6 +191,8 @@ static HRESULT WINAPI TgaDecoder_Initialize(IWICBitmapDecoder *iface, IStream *p HRESULT hr=S_OK; DWORD bytesread; LARGE_INTEGER seek; + tga_footer footer; + int attribute_bitcount;
TRACE("(%p,%p,%u)\n", iface, pIStream, cacheOptions);
@@ -207,8 +247,15 @@ static HRESULT WINAPI TgaDecoder_Initialize(IWICBitmapDecoder *iface, IStream *p This->header.depth != 24 && This->header.depth != 32) hr = E_FAIL;
- if ((This->header.image_descriptor & IMAGE_ATTRIBUTE_BITCOUNT_MASK) > 8 || - (This->header.image_descriptor & 0xc0) != 0) + if ((This->header.image_descriptor & 0xc0) != 0) + hr = E_FAIL; + + 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)))) hr = E_FAIL;
if (FAILED(hr)) @@ -226,7 +273,49 @@ static HRESULT WINAPI TgaDecoder_Initialize(IWICBitmapDecoder *iface, IStream *p This->colormap_length = 0; This->image_offset = This->colormap_offset + This->colormap_length;
- /* FIXME: Read footer if there is one. */ + /* Read footer if there is one */ + seek.QuadPart = -sizeof(tga_footer); + hr = IStream_Seek(pIStream, seek, STREAM_SEEK_END, NULL); + if (FAILED(hr)) goto end; + + hr = IStream_Read(pIStream, &footer, sizeof(tga_footer), &bytesread); + if (SUCCEEDED(hr) && bytesread != sizeof(tga_footer)) + { + TRACE("got only %u footer bytes\n", bytesread); + hr = E_FAIL; + } + if (FAILED(hr)) goto end; + + if (memcmp(footer.magic, tga_footer_magic, sizeof(tga_footer_magic)) == 0) + { + This->extension_area_offset = footer.extension_area_offset; + This->developer_directory_offset = footer.developer_directory_offset; + } + else + { + This->extension_area_offset = 0; + This->developer_directory_offset = 0; + } + + if (This->extension_area_offset) + { + seek.QuadPart = This->extension_area_offset; + hr = IStream_Seek(pIStream, seek, STREAM_SEEK_SET, NULL); + if (FAILED(hr)) goto end; + + hr = IStream_Read(pIStream, &This->extension_area, sizeof(tga_extension_area), &bytesread); + if (SUCCEEDED(hr) && bytesread != sizeof(tga_extension_area)) + { + TRACE("got only %u extension area bytes\n", bytesread); + hr = E_FAIL; + } + if (SUCCEEDED(hr) && This->extension_area.size < 495) + { + TRACE("extension area is only %u bytes long\n", This->extension_area.size); + hr = E_FAIL; + } + if (FAILED(hr)) goto end; + }
IStream_AddRef(pIStream); This->stream = pIStream; @@ -379,16 +468,18 @@ static HRESULT WINAPI TgaDecoder_Frame_GetPixelFormat(IWICBitmapFrameDecode *ifa { TgaDecoder *This = decoder_from_frame(iface); int attribute_bitcount; + byte attribute_type;
TRACE("(%p,%p)\n", iface, pPixelFormat);
attribute_bitcount = This->header.image_descriptor & IMAGE_ATTRIBUTE_BITCOUNT_MASK;
- if (attribute_bitcount) - { - FIXME("Need to read footer to find meaning of attribute bits\n"); - return E_NOTIMPL; - } + 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;
switch (This->header.image_type & ~IMAGETYPE_RLE) { @@ -407,7 +498,21 @@ static HRESULT WINAPI TgaDecoder_Frame_GetPixelFormat(IWICBitmapFrameDecode *ifa switch (This->header.depth) { case 16: - memcpy(pPixelFormat, &GUID_WICPixelFormat16bppBGR555, sizeof(GUID)); + switch (attribute_type) + { + case ATTRIBUTE_NO_ALPHA: + case ATTRIBUTE_UNDEFINED: + case ATTRIBUTE_UNDEFINED_PRESERVE: + memcpy(pPixelFormat, &GUID_WICPixelFormat16bppBGR555, sizeof(GUID)); + break; + case ATTRIBUTE_ALPHA: + case ATTRIBUTE_PALPHA: + memcpy(pPixelFormat, &GUID_WICPixelFormat16bppBGRA5551, sizeof(GUID)); + break; + default: + FIXME("Unhandled 16-bit attribute type %u\n", attribute_type); + return E_NOTIMPL; + } break; case 24: memcpy(pPixelFormat, &GUID_WICPixelFormat24bppBGR, sizeof(GUID)); diff --git a/include/wincodec.idl b/include/wincodec.idl index 8cc6500..6343350 100644 --- a/include/wincodec.idl +++ b/include/wincodec.idl @@ -158,6 +158,7 @@ cpp_quote("DEFINE_GUID(GUID_WICPixelFormat16bppGray, 0x6fddc324,0x4e03,0x4bfe,0x
cpp_quote("DEFINE_GUID(GUID_WICPixelFormat16bppBGR555, 0x6fddc324,0x4e03,0x4bfe,0xb1,0x85,0x3d,0x77,0x76,0x8d,0xc9,0x09);") cpp_quote("DEFINE_GUID(GUID_WICPixelFormat16bppBGR565, 0x6fddc324,0x4e03,0x4bfe,0xb1,0x85,0x3d,0x77,0x76,0x8d,0xc9,0x0a);") +cpp_quote("DEFINE_GUID(GUID_WICPixelFormat16bppBGRA5551, 0x05ec7c2b,0xf1e6,0x4961,0xad,0x46,0xe1,0xcc,0x81,0x0a,0x87,0xd2);") cpp_quote("DEFINE_GUID(GUID_WICPixelFormat24bppBGR, 0x6fddc324,0x4e03,0x4bfe,0xb1,0x85,0x3d,0x77,0x76,0x8d,0xc9,0x0c);") cpp_quote("DEFINE_GUID(GUID_WICPixelFormat32bppBGR, 0x6fddc324,0x4e03,0x4bfe,0xb1,0x85,0x3d,0x77,0x76,0x8d,0xc9,0x0e);") cpp_quote("DEFINE_GUID(GUID_WICPixelFormat32bppBGRA, 0x6fddc324,0x4e03,0x4bfe,0xb1,0x85,0x3d,0x77,0x76,0x8d,0xc9,0x0f);")