snes9x/macosx/mac-screenshot.mm

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/*****************************************************************************\
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
This file is licensed under the Snes9x License.
For further information, consult the LICENSE file in the root directory.
\*****************************************************************************/
/***********************************************************************************
SNES9X for Mac OS (c) Copyright John Stiles
Snes9x for Mac OS X
(c) Copyright 2001 - 2011 zones
(c) Copyright 2002 - 2005 107
(c) Copyright 2002 PB1400c
(c) Copyright 2004 Alexander and Sander
(c) Copyright 2004 - 2005 Steven Seeger
(c) Copyright 2005 Ryan Vogt
(c) Copyright 2019 Michael Donald Buckley
***********************************************************************************/
#include <sys/xattr.h>
#include "snes9x.h"
#include "memmap.h"
#include "screenshot.h"
#include "mac-prefix.h"
#include "mac-file.h"
#include "mac-gworld.h"
#include "mac-os.h"
#include "mac-render.h"
#include "mac-screenshot.h"
extern "C" {
#include "FakeResources.h"
}
const char *extendedAttributeName = "com.snes9x.preview";
unsigned char *CGImageToPNGData (CGImageRef image, CFIndex *outLength);
unsigned char *CGImageToPNGData (CGImageRef image, CFIndex *outLength)
{
if (!outLength)
{
return NULL;
}
CFMutableDataRef dataRef = CFDataCreateMutable(kCFAllocatorDefault, 0);
if (dataRef)
{
CGImageDestinationRef dest = CGImageDestinationCreateWithData(dataRef, kUTTypePNG, 1, NULL);
if (dest)
{
CGImageDestinationAddImage(dest, image, NULL);
CGImageDestinationFinalize(dest);
CFRelease(dest);
*outLength = CFDataGetLength(dataRef);
unsigned char *data = (unsigned char *)malloc(*outLength);
if (data)
{
CFDataGetBytes(dataRef, CFRangeMake(0, *outLength), data);
return data;
}
}
else
{
CFRelease(dataRef);
}
}
return NULL;
}
static void ExportCGImageToPNGFile (CGImageRef image, const char *path)
{
CFStringRef str;
CFURLRef url;
str = CFStringCreateWithCString(kCFAllocatorDefault, path, kCFStringEncodingUTF8);
if (str)
{
url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, str, kCFURLPOSIXPathStyle, false);
if (url)
{
CFIndex length = 0;
unsigned char *data = CGImageToPNGData(image, &length);
if (data)
{
FILE *f = fopen(path, "wb");
if (f)
{
fwrite(data, length, 1, f);
fclose(f);
}
free(data);
}
CFRelease(url);
}
CFRelease(str);
}
}
CGImageRef CreateGameScreenCGImage (void)
{
CGDataProviderRef prov;
CGColorSpaceRef color;
CGImageRef image = NULL;
int rowbytes;
rowbytes = IPPU.RenderedScreenWidth * 2;
prov = CGDataProviderCreateWithData(NULL, GFX.Screen, 512 * 2 * 478, NULL);
if (prov)
{
color = CGColorSpaceCreateDeviceRGB();
if (color)
{
image = CGImageCreate(IPPU.RenderedScreenWidth, IPPU.RenderedScreenHeight, 5, 16, rowbytes, color, kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder16Host, prov, NULL, 1, kCGRenderingIntentDefault);
CGColorSpaceRelease(color);
}
CGDataProviderRelease(prov);
}
return (image);
}
CGImageRef CreateBlitScreenCGImage (int width, int height, int rowbytes, uint8 *buffer)
{
CGDataProviderRef prov;
CGColorSpaceRef color;
CGImageRef image = NULL;
prov = CGDataProviderCreateWithData(NULL, buffer, rowbytes * height, NULL);
if (prov)
{
color = CGColorSpaceCreateDeviceRGB();
if (color)
{
image = CGImageCreate(width, height, 5, 16, rowbytes, color, kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder16Host, prov, NULL, 1, kCGRenderingIntentDefault);
CGColorSpaceRelease(color);
}
CGDataProviderRelease(prov);
}
return (image);
}
void WriteThumbnailToExtendedAttribute (const char *path, int destWidth, int destHeight)
{
CGContextRef ctx;
CGColorSpaceRef color = NULL;
char *data[destWidth * destHeight * 2];
CGImageRef image = CreateGameScreenCGImage();
if (image)
{
color = CGColorSpaceCreateDeviceRGB();
if (color)
{
ctx = CGBitmapContextCreate(data, destWidth, destHeight, 5, destWidth * 2, color, kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder16Big);
if (ctx)
{
CGContextDrawImage(ctx, CGRectMake(0.0f, 0.0f, (float) destWidth, (float) destHeight), image);
CGContextRelease(ctx);
CFIndex length = 0;
unsigned char *data = CGImageToPNGData(image, &length);
if (data)
{
setxattr(path, extendedAttributeName, data, length, 0, 0);
free(data);
}
}
CGColorSpaceRelease(color);
}
CGImageRelease(image);
}
}
void DrawThumbnailFromExtendedAttribute (const char *path, CGContextRef ctx, CGRect bounds)
{
CGContextSaveGState(ctx);
CGContextSetRGBFillColor(ctx, 0.0f, 0.0f, 0.0f, 1.0f);
CGContextFillRect(ctx, bounds);
ssize_t size = getxattr(path, extendedAttributeName, NULL, 0, 0, 0);
if ( size > 0 )
{
unsigned char *buffer = (unsigned char *)malloc(size);
if (buffer != NULL)
{
getxattr(path, extendedAttributeName, buffer, size, 0, 0);
NSData *data = [NSData dataWithBytes:buffer length:size];
if (data)
{
NSImage *image = [[NSImage alloc] initWithData:data];
if (image)
{
CGContextDrawImage(ctx, bounds, [image CGImageForProposedRect:NULL context:[NSGraphicsContext currentContext] hints:nil]);
}
}
free(buffer);
}
}
else
{
struct FakeResourceMap *resourceMap = FakeResFileOpen(std::string(std::string(path) + "/..namedfork/rsrc").c_str(), "r");
if (resourceMap != NULL)
{
int16 fileNum = FakeCurResFile();
Handle pict = FakeGet1Resource('PICT', 128);
if (pict)
{
Size size = FakeGetHandleSize(pict);
NSData *imageData = [NSData dataWithBytes:*pict length:size];
if (imageData)
{
NSImage *image = [[NSImage alloc] initWithData:imageData];
if (image)
{
CGContextDrawImage(ctx, bounds, [image CGImageForProposedRect:NULL context:[NSGraphicsContext currentContext] hints:nil]);
}
}
}
else
{
pict = FakeGet1Resource('Thum', 128);
Size size = FakeGetHandleSize(pict);
NSData *imageData = [NSData dataWithBytes:*pict length:size];
if (imageData)
{
CGDataProviderRef provider = CGDataProviderCreateWithData(NULL, (__bridge CFDataRef)imageData, size, NULL);
if (provider)
{
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
if (colorSpace)
{
CGImageRef image = CGImageCreate(128, 120, 5, 16, 256, colorSpace, kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder16Big, provider, NULL, 0, kCGRenderingIntentDefault);
if (image)
{
CGContextDrawImage(ctx, bounds, image);
CGImageRelease(image);
}
CGColorSpaceRelease(colorSpace);
}
CFRelease(provider);
}
}
}
FakeCloseResFile(fileNum);
}
}
CGContextRestoreGState(ctx);
}
bool8 S9xDoScreenshot (int width, int height)
{
Settings.TakeScreenshot = false;
uint16 *data;
data = (uint16 *) malloc(512 * 478 * 2);
if (data)
{
uint16 *sp, *dp;
if (width > 256 && height > 239)
{
for (int y = 0; y < height; y++)
{
sp = GFX.Screen + y * GFX.RealPPL;
dp = data + y * 512;
for (int x = 0; x < width; x++)
*dp++ = *sp++;
}
}
else
if (width > 256)
{
for (int y = 0; y < height; y++)
{
sp = GFX.Screen + y * GFX.RealPPL;
dp = data + y * 2 * 512;
for (int x = 0; x < width; x++)
{
*dp = *(dp + 512) = *sp++;
dp++;
}
}
}
else
{
for (int y = 0; y < height; y++)
{
sp = GFX.Screen + y * GFX.RealPPL;
dp = data + y * 2 * 512;
for (int x = 0; x < width; x++)
{
*dp = *(dp + 1) = *(dp + 512) = *(dp + 512 + 1) = *sp++;
dp += 2;
}
}
}
CGImageRef image;
image = CreateBlitScreenCGImage(512, (height > 239) ? height : (height * 2), 1024, (uint8 *) data);
if (image)
{
ExportCGImageToPNGFile(image, S9xGetPNGFilename());
CGImageRelease(image);
}
free(data);
}
return (true);
}