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/**
* @file llwindowmacosx-objc.mm
* @brief Definition of functions shared between llwindowmacosx.cpp
* and llwindowmacosx-objc.mm.
*
* $LicenseInfo:firstyear=2006&license=viewergpl$
*
* Copyright (c) 2006-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#include <AppKit/AppKit.h>
#include <Accelerate/Accelerate.h>
#include <Quartz/Quartz.h>
/*
* These functions are broken out into a separate file because the
* objective-C typedef for 'BOOL' conflicts with the one in
* llcommon/stdtypes.h. This makes it impossible to use the standard
* linden headers with any objective-C++ source.
*/
#include "llwindowmacosx-objc.h"
BOOL decodeImageQuartz(const UInt8* data, int len, LLImageRaw *raw_image)
{
CFDataRef theData = CFDataCreate(kCFAllocatorDefault, data, len);
CGImageSourceRef srcRef = CGImageSourceCreateWithData(theData, NULL);
CGImageRef image_ref = CGImageSourceCreateImageAtIndex(srcRef, 0, NULL);
size_t width = CGImageGetWidth(image_ref);
size_t height = CGImageGetHeight(image_ref);
size_t comps = CGImageGetBitsPerPixel(image_ref) / 8;
size_t bytes_per_row = CGImageGetBytesPerRow(image_ref);
CFDataRef result = CGDataProviderCopyData(CGImageGetDataProvider(image_ref));
UInt8* bitmap = (UInt8*)CFDataGetBytePtr(result);
CGImageAlphaInfo format = CGImageGetAlphaInfo(image_ref);
if (format != kCGImageAlphaNone)
{
vImage_Buffer vb;
vb.data = bitmap;
vb.height = height;
vb.width = width;
vb.rowBytes = bytes_per_row;
if (format & kCGImageAlphaPremultipliedFirst)
{
// Ele: ARGB -> BGRA on Intel, need to first reorder the bytes, then unpremultiply as RGBA :)
llinfos << "Unpremultiplying BGRA8888" << llendl;
for (int i=0; i<height; i++)
{
for (int j=0; j<bytes_per_row; j+=4)
{
unsigned char tmp[4];
tmp[0] = bitmap[j*height+3];
tmp[1] = bitmap[j*height+2];
tmp[2] = bitmap[j*height+1];
tmp[3] = bitmap[j*height];
memcpy(&bitmap[j*height], &tmp, 4);
}
}
vImageUnpremultiplyData_RGBA8888(&vb, &vb, 0);
}
else if (format & kCGImageAlphaPremultipliedLast)
{
llinfos << "Unpremultiplying RGBA8888" << llendl;
vImageUnpremultiplyData_RGBA8888(&vb, &vb, 0);
}
}
raw_image->resize(width, height, comps);
memcpy(raw_image->getData(), bitmap, height * bytes_per_row);
raw_image->verticalFlip();
CFRelease(theData);
CFRelease(srcRef);
CGImageRelease(image_ref);
CFRelease(result);
return TRUE;
}
BOOL decodeImageQuartz(std::string filename, LLImageRaw *raw_image)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSURL *url = [[NSURL alloc] initFileURLWithPath:[NSString stringWithCString:filename.c_str()]];
NSData *data = [NSData dataWithContentsOfURL:url];
BOOL result = decodeImageQuartz((UInt8*)[data bytes], [data length], raw_image);
[pool release];
return result;
}
void setupCocoa()
{
static bool inited = false;
if(!inited)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
// This is a bit of voodoo taken from the Apple sample code "CarbonCocoa_PictureCursor":
// http://developer.apple.com/samplecode/CarbonCocoa_PictureCursor/index.html
// Needed for Carbon based applications which call into Cocoa
NSApplicationLoad();
// Must first call [[[NSWindow alloc] init] release] to get the NSWindow machinery set up so that NSCursor can use a window to cache the cursor image
[[[NSWindow alloc] init] release];
[pool release];
}
}
CursorRef createImageCursor(const char *fullpath, int hotspotX, int hotspotY)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
// extra retain on the NSCursor since we want it to live for the lifetime of the app.
NSCursor *cursor =
[[[NSCursor alloc]
initWithImage:
[[[NSImage alloc] initWithContentsOfFile:
[NSString stringWithFormat:@"%s", fullpath]
]autorelease]
hotSpot:NSMakePoint(hotspotX, hotspotY)
]retain];
[pool release];
return (CursorRef)cursor;
}
// This is currently unused, since we want all our cursors to persist for the life of the app, but I've included it for completeness.
OSErr releaseImageCursor(CursorRef ref)
{
if( ref != NULL )
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSCursor *cursor = (NSCursor*)ref;
[cursor release];
[pool release];
}
else
{
return paramErr;
}
return noErr;
}
OSErr setImageCursor(CursorRef ref)
{
if( ref != NULL )
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSCursor *cursor = (NSCursor*)ref;
[cursor set];
[pool release];
}
else
{
return paramErr;
}
return noErr;
}
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