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d3dx9: Check the size of a DDS file in D3DXGetImageInfoFromFileInMemory.

This commit is contained in:
Józef Kucia 2012-05-13 23:00:04 +02:00 committed by Alexandre Julliard
parent 42dd957c50
commit e91300a318
2 changed files with 63 additions and 5 deletions
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53
dlls/d3dx9_36/surface.c
View File

@ -269,6 +269,29 @@ static D3DFORMAT dds_pixel_format_to_d3dformat(const struct dds_pixel_format *pi
return D3DFMT_UNKNOWN;
}
static HRESULT calculate_dds_surface_size(const D3DXIMAGE_INFO *img_info,
UINT width, UINT height, UINT *pitch, UINT *size)
{
const PixelFormatDesc *format_desc = get_format_info(img_info->Format);
if (format_desc->format == D3DFMT_UNKNOWN)
return E_NOTIMPL;
if (format_desc->block_width != 1 || format_desc->block_height != 1)
{
*pitch = format_desc->block_byte_count
* max(1, (width + format_desc->block_width - 1) / format_desc->block_width);
*size = *pitch
* max(1, (height + format_desc->block_height - 1) / format_desc->block_height);
}
else
{
*pitch = width * format_desc->bytes_per_pixel;
*size = *pitch * height;
}
return D3D_OK;
}
/************************************************************
* get_image_info_from_dds
*
@ -285,9 +308,13 @@ static D3DFORMAT dds_pixel_format_to_d3dformat(const struct dds_pixel_format *pi
* Failure: D3DXERR_INVALIDDATA
*
*/
static HRESULT get_image_info_from_dds(const void *buffer, DWORD length, D3DXIMAGE_INFO *info)
static HRESULT get_image_info_from_dds(const void *buffer, UINT length, D3DXIMAGE_INFO *info)
{
UINT i;
UINT faces = 0;
UINT width, height;
const struct dds_header *header = buffer;
UINT expected_length = 0;
if (length < sizeof(*header) || !info)
return D3DXERR_INVALIDDATA;
@ -311,13 +338,37 @@ static HRESULT get_image_info_from_dds(const void *buffer, DWORD length, D3DXIMA
}
else if (header->caps2 & DDS_CAPS2_CUBEMAP)
{
DWORD face;
for (face = DDS_CAPS2_CUBEMAP_POSITIVEX; face <= DDS_CAPS2_CUBEMAP_NEGATIVEZ; face <<= 1)
{
if (header->caps2 & face)
faces++;
}
info->ResourceType = D3DRTYPE_CUBETEXTURE;
}
else
{
faces = 1;
info->ResourceType = D3DRTYPE_TEXTURE;
}
/* calculate the expected length */
width = info->Width;
height = info->Height;
for (i = 0; i < info->MipLevels; i++)
{
UINT pitch, size = 0;
calculate_dds_surface_size(info, width, height, &pitch, &size);
expected_length += size;
width = max(1, width / 2);
height = max(1, width / 2);
}
expected_length *= faces;
expected_length += sizeof(*header);
if (length < expected_length)
return D3DXERR_INVALIDDATA;
info->ImageFileFormat = D3DXIFF_DDS;
return D3D_OK;

15
dlls/d3dx9_36/tests/surface.c
View File

@ -404,10 +404,17 @@ static void test_D3DXGetImageInfo(void)
check_dds_pixel_format(DDS_PF_BUMPDUDV, 0, 16, 0x00ff, 0xff00, 0, 0, D3DFMT_V8U8);
check_dds_pixel_format(DDS_PF_BUMPDUDV, 0, 32, 0x0000ffff, 0xffff0000, 0, 0, D3DFMT_V16U16);
todo_wine {
hr = D3DXGetImageInfoFromFileInMemory(dds_16bit, sizeof(dds_16bit) - 1, &info);
ok(hr == D3DXERR_INVALIDDATA, "D3DXGetImageInfoFromFileInMemory returned %#x, expected %#x\n", hr, D3DXERR_INVALIDDATA);
}
hr = D3DXGetImageInfoFromFileInMemory(dds_16bit, sizeof(dds_16bit) - 1, &info);
ok(hr == D3DXERR_INVALIDDATA, "D3DXGetImageInfoFromFileInMemory returned %#x, expected %#x\n", hr, D3DXERR_INVALIDDATA);
hr = D3DXGetImageInfoFromFileInMemory(dds_24bit, sizeof(dds_24bit) - 1, &info);
ok(hr == D3DXERR_INVALIDDATA, "D3DXGetImageInfoFromFileInMemory returned %#x, expected %#x\n", hr, D3DXERR_INVALIDDATA);
hr = D3DXGetImageInfoFromFileInMemory(dds_cube_map, sizeof(dds_cube_map) - 1, &info);
ok(hr == D3DXERR_INVALIDDATA, "D3DXGetImageInfoFromFileInMemory returned %#x, expected %#x\n", hr, D3DXERR_INVALIDDATA);
hr = D3DXGetImageInfoFromFileInMemory(dds_volume_map, sizeof(dds_volume_map) - 1, &info);
todo_wine ok(hr == D3DXERR_INVALIDDATA, "D3DXGetImageInfoFromFileInMemory returned %#x, expected %#x\n", hr, D3DXERR_INVALIDDATA);
/* cleanup */