diff options
author | Upstream <upstream-import@none> | 1970-01-12 13:46:40 +0000 |
---|---|---|
committer | Upstream <upstream-import@none> | 1970-01-12 13:46:40 +0000 |
commit | d8543bb6618c17b12da906afa77d216f58cf4058 (patch) | |
tree | c58dc05ed86825bd0ef8d305d58c8205106b540f /WebKit/mac/Misc/WebGraphicsExtras.c | |
download | external_webkit-d8543bb6618c17b12da906afa77d216f58cf4058.zip external_webkit-d8543bb6618c17b12da906afa77d216f58cf4058.tar.gz external_webkit-d8543bb6618c17b12da906afa77d216f58cf4058.tar.bz2 |
external/webkit r30707
Diffstat (limited to 'WebKit/mac/Misc/WebGraphicsExtras.c')
-rw-r--r-- | WebKit/mac/Misc/WebGraphicsExtras.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/WebKit/mac/Misc/WebGraphicsExtras.c b/WebKit/mac/Misc/WebGraphicsExtras.c new file mode 100644 index 0000000..0832c6c --- /dev/null +++ b/WebKit/mac/Misc/WebGraphicsExtras.c @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#import "WebGraphicsExtras.h" + +#import <Accelerate/Accelerate.h> +#import <JavaScriptCore/Assertions.h> +#import <dlfcn.h> + +unsigned WebConvertBGRAToARGB(unsigned char *offscreenBuffer, int rowBytes, int x, int y, int width, int height) +{ + + static vImage_Error (*softLink_vImagePermuteChannels_ARGB8888)(const vImage_Buffer *src, const vImage_Buffer *dest, const uint8_t permuteMap[4], vImage_Flags flags) = NULL; + + if (!softLink_vImagePermuteChannels_ARGB8888) { + void *framework = dlopen("/System/Library/Frameworks/Accelerate.framework/Accelerate", RTLD_NOW); + ASSERT(framework); + softLink_vImagePermuteChannels_ARGB8888 = dlsym(framework, "vImagePermuteChannels_ARGB8888"); + ASSERT(softLink_vImagePermuteChannels_ARGB8888); + } + + void *swizzleImageBase = offscreenBuffer + y * rowBytes + x * 4; + vImage_Buffer vImage = { swizzleImageBase, height, width, rowBytes }; + uint8_t vImagePermuteMap[4] = { 3, 2, 1, 0 }; // Where { 0, 1, 2, 3 } would leave the channels unchanged; this map converts BGRA to ARGB + vImage_Error vImageError = softLink_vImagePermuteChannels_ARGB8888(&vImage, &vImage, vImagePermuteMap, 0); + if (vImageError) { + LOG_ERROR("Could not convert BGRA image to ARGB: %zd", vImageError); + return FALSE; + } + + return TRUE; +} |