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Converted PictureBlocks to a Python extension and created a "common" C unit for common code among extensions.

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This commit is contained in:
Virgil Dupras
2010-02-04 13:13:08 +01:00
parent 0b9d936317
commit 352a21acaa
11 changed files with 325 additions and 250 deletions
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19
cocoa/pe/PictureBlocks.h
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@@ -1,19 +0,0 @@
/*
Copyright 2010 Hardcoded Software (http://www.hardcoded.net)
This software is licensed under the "HS" License as described in the "LICENSE" file,
which should be included with this package. The terms are also available at
http://www.hardcoded.net/licenses/hs_license
*/
#import <Cocoa/Cocoa.h>
@interface PictureBlocks : NSObject {
}
+ (NSString *)getBlocksFromImagePath:(NSString *)imagePath blockCount:(NSNumber *)blockCount;
+ (NSSize)getImageSize:(NSString *)imagePath;
@end
NSString* GetBlocks(NSString *filePath, int blockCount);

146
cocoa/pe/PictureBlocks.m
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@@ -1,146 +0,0 @@
/*
Copyright 2010 Hardcoded Software (http://www.hardcoded.net)
This software is licensed under the "HS" License as described in the "LICENSE" file,
which should be included with this package. The terms are also available at
http://www.hardcoded.net/licenses/hs_license
*/
#import "PictureBlocks.h"
#import "Utils.h"
@implementation PictureBlocks
+ (NSString *)getBlocksFromImagePath:(NSString *)imagePath blockCount:(NSNumber *)blockCount
{
return GetBlocks(imagePath, n2i(blockCount));
}
+ (NSSize)getImageSize:(NSString *)imagePath
{
CFURLRef fileURL = CFURLCreateWithFileSystemPath(NULL, (CFStringRef)imagePath, kCFURLPOSIXPathStyle, FALSE);
CGImageSourceRef source = CGImageSourceCreateWithURL(fileURL, NULL);
if (source == NULL)
return NSMakeSize(0, 0);
CGImageRef image = CGImageSourceCreateImageAtIndex(source, 0, NULL);
if (image == NULL)
return NSMakeSize(0, 0);
size_t width = CGImageGetWidth(image);
size_t height = CGImageGetHeight(image);
CGImageRelease(image);
CFRelease(source);
CFRelease(fileURL);
return NSMakeSize(width, height);
}
@end
CGContextRef MyCreateBitmapContext (int width, int height)
{
CGContextRef context = NULL;
CGColorSpaceRef colorSpace;
void * bitmapData;
int bitmapByteCount;
int bitmapBytesPerRow;
bitmapBytesPerRow = (width * 4);
bitmapByteCount = (bitmapBytesPerRow * height);
colorSpace = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);
// calloc() must be used to allocate bitmapData here because the buffer has to be zeroed.
// If it's not zeroes, when images with transparency are drawn in the context, this buffer
// will stay with undefined pixels, which means that two pictures with the same pixels will
// most likely have different blocks (which is not supposed to happen).
bitmapData = calloc(bitmapByteCount, 1);
if (bitmapData == NULL)
{
fprintf (stderr, "Memory not allocated!");
return NULL;
}
context = CGBitmapContextCreate (bitmapData,width,height,8,bitmapBytesPerRow,colorSpace,kCGImageAlphaNoneSkipLast);
if (context== NULL)
{
free (bitmapData);
fprintf (stderr, "Context not created!");
return NULL;
}
CGColorSpaceRelease( colorSpace );
return context;
}
// returns 0x00RRGGBB
int GetBlock(unsigned char *imageData, int imageWidth, int imageHeight, int boxX, int boxY, int boxW, int boxH)
{
int i,j;
int totalR = 0;
int totalG = 0;
int totalB = 0;
for(i = boxY; i < boxY + boxH; i++)
{
for(j = boxX; j < boxX + boxW; j++)
{
int offset = (i * imageWidth * 4) + (j * 4);
totalR += *(imageData + offset);
totalG += *(imageData + offset + 1);
totalB += *(imageData + offset + 2);
}
}
int pixelCount = boxH * boxW;
int result = 0;
result += (totalR / pixelCount) << 16;
result += (totalG / pixelCount) << 8;
result += (totalB / pixelCount);
return result;
}
NSString* GetBlocks (NSString* filePath, int blockCount)
{
CFURLRef fileURL = CFURLCreateWithFileSystemPath(NULL, (CFStringRef)filePath, kCFURLPOSIXPathStyle, FALSE);
CGImageSourceRef source = CGImageSourceCreateWithURL(fileURL, NULL);
if (source == NULL)
return NULL;
CGImageRef image = CGImageSourceCreateImageAtIndex(source, 0, NULL);
if (image == NULL)
return NULL;
size_t width = CGImageGetWidth(image);
size_t height = CGImageGetHeight(image);
CGContextRef myContext = MyCreateBitmapContext(width, height);
CGRect myBoundingBox = CGRectMake (0, 0, width, height);
CGContextDrawImage(myContext, myBoundingBox, image);
unsigned char *bitmapData = CGBitmapContextGetData(myContext);
if (bitmapData == NULL)
return NULL;
int blockHeight = height / blockCount;
if (blockHeight < 1)
blockHeight = 1;
int blockWidth = width / blockCount;
if (blockWidth < 1)
blockWidth = 1;
//blockCount might have changed
int blockXCount = (width / blockWidth);
int blockYCount = (height / blockHeight);
CFMutableArrayRef blocks = CFArrayCreateMutable(NULL, blockXCount * blockYCount, &kCFTypeArrayCallBacks);
int i,j;
for(i = 0; i < blockYCount; i++)
{
for(j = 0; j < blockXCount; j++)
{
int block = GetBlock(bitmapData, width, height, j * blockWidth, i * blockHeight, blockWidth, blockHeight);
CFStringRef strBlock = CFStringCreateWithFormat(NULL, NULL, CFSTR("%06x"), block);
CFArrayAppendValue(blocks, strBlock);
CFRelease(strBlock);
}
}
CGContextRelease (myContext);
if (bitmapData) free(bitmapData);
CGImageRelease(image);
CFRelease(source);
CFRelease(fileURL);
CFStringRef result = CFStringCreateByCombiningStrings(NULL, blocks, CFSTR(""));
CFRelease(blocks);
return (NSString *)result;
}

6
cocoa/pe/dupeguru.xcodeproj/project.pbxproj
View File

@@ -12,7 +12,6 @@
CE031751109B340A00517EE6 /* Preferences.xib in Resources */ = {isa = PBXBuildFile; fileRef = CE031750109B340A00517EE6 /* Preferences.xib */; };
CE031754109B345200517EE6 /* MainMenu.xib in Resources */ = {isa = PBXBuildFile; fileRef = CE031753109B345200517EE6 /* MainMenu.xib */; };
CE073F6309CAE1A3005C1D2F /* dupeguru_pe_help in Resources */ = {isa = PBXBuildFile; fileRef = CE073F5409CAE1A3005C1D2F /* dupeguru_pe_help */; };
CE0C46AA0FA0647E000BE99B /* PictureBlocks.m in Sources */ = {isa = PBXBuildFile; fileRef = CE0C46A90FA0647E000BE99B /* PictureBlocks.m */; };
CE15C8A80ADEB8B50061D4A5 /* Sparkle.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = CE15C8A70ADEB8B50061D4A5 /* Sparkle.framework */; };
CE15C8C00ADEB8D40061D4A5 /* Sparkle.framework in CopyFiles */ = {isa = PBXBuildFile; fileRef = CE15C8A70ADEB8B50061D4A5 /* Sparkle.framework */; };
CE381C9609914ACE003581CE /* AppDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = CE381C9409914ACE003581CE /* AppDelegate.m */; };
@@ -77,8 +76,6 @@
CE031750109B340A00517EE6 /* Preferences.xib */ = {isa = PBXFileReference; lastKnownFileType = file.xib; path = Preferences.xib; sourceTree = "<group>"; };
CE031753109B345200517EE6 /* MainMenu.xib */ = {isa = PBXFileReference; lastKnownFileType = file.xib; name = MainMenu.xib; path = ../../base/xib/MainMenu.xib; sourceTree = "<group>"; };
CE073F5409CAE1A3005C1D2F /* dupeguru_pe_help */ = {isa = PBXFileReference; lastKnownFileType = folder; name = dupeguru_pe_help; path = ../../help_pe/dupeguru_pe_help; sourceTree = SOURCE_ROOT; };
CE0C46A80FA0647E000BE99B /* PictureBlocks.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PictureBlocks.h; sourceTree = "<group>"; };
CE0C46A90FA0647E000BE99B /* PictureBlocks.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = PictureBlocks.m; sourceTree = "<group>"; };
CE15C8A70ADEB8B50061D4A5 /* Sparkle.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Sparkle.framework; path = /Library/Frameworks/Sparkle.framework; sourceTree = "<absolute>"; };
CE381C9409914ACE003581CE /* AppDelegate.m */ = {isa = PBXFileReference; fileEncoding = 5; lastKnownFileType = sourcecode.c.objc; path = AppDelegate.m; sourceTree = SOURCE_ROOT; };
CE381C9509914ACE003581CE /* AppDelegate.h */ = {isa = PBXFileReference; fileEncoding = 5; lastKnownFileType = sourcecode.c.h; path = AppDelegate.h; sourceTree = SOURCE_ROOT; };
@@ -155,8 +152,6 @@
080E96DDFE201D6D7F000001 /* Classes */ = {
isa = PBXGroup;
children = (
CE0C46A80FA0647E000BE99B /* PictureBlocks.h */,
CE0C46A90FA0647E000BE99B /* PictureBlocks.m */,
CE381C9509914ACE003581CE /* AppDelegate.h */,
CE381C9409914ACE003581CE /* AppDelegate.m */,
CE848A1809DD85810004CB44 /* Consts.h */,
@@ -409,7 +404,6 @@
CE381C9C09914ADF003581CE /* ResultWindow.m in Sources */,
CE68EE6809ABC48000971085 /* DirectoryPanel.m in Sources */,
CECA899D09DB132E00A3D774 /* DetailsPanel.m in Sources */,
CE0C46AA0FA0647E000BE99B /* PictureBlocks.m in Sources */,
CE80DB2E0FC192D60086DCA6 /* Dialogs.m in Sources */,
CE80DB2F0FC192D60086DCA6 /* HSErrorReportWindow.m in Sources */,
CE80DB300FC192D60086DCA6 /* Outline.m in Sources */,