view src/share/native/sun/awt/splashscreen/splashscreen_impl.h @ 1173:7f4cf1eb7586

6804996: JWS PNG Decoding Integer Overflow [V-flrhat2ln8] Reviewed-by: prr
author bae
date Fri, 20 Feb 2009 13:48:32 +0300
parents 37a05a11f281
children 00cd9dc3c2b5
line wrap: on
line source
 * Copyright 2005 Sun Microsystems, Inc.  All Rights Reserved.
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit if you need additional information or
 * have any questions.


#include "splashscreen_config.h"
#include "splashscreen_gfx.h"

SPLASHEXPORT int SplashLoadMemory(void *pdata, int size); /* requires preloading the file */
SPLASHEXPORT int SplashLoadFile(const char *filename);  // FIXME: range checking for SplashLoadMemory

SPLASHEXPORT void SplashInit(void);
SPLASHEXPORT void SplashClose(void);

SplashSetFileJarName(const char* fileName, const char* jarName);

typedef struct SplashImage
    rgbquad_t *bitmapBits;
    int delay;                  /* before next image display, in msec                                                       */
#if defined(WITH_WIN32)
    HRGN hRgn;
#elif defined(WITH_X11)
    XRectangle *rects;
    int numRects;
} SplashImage;


typedef struct Splash
    ImageFormat screenFormat;   /* must be preset before image decoding */
    DitherSettings dithers[3];
    ImageFormat imageFormat;
    rgbquad_t colorMap[SPLASH_COLOR_MAP_SIZE];
    int byteAlignment;          /* must be preset before image decoding */
    int maskRequired;           /* must be preset before image decoding */
    int width;                  /* in pixels */
    int height;                 /* in pixels */
    int frameCount;
    SplashImage *frames;        /* dynamically allocated array of frame descriptors */
    unsigned time;              /* in msec, origin is not important */
    rgbquad_t *overlayData;     /* overlay image data, always rgbquads */
    ImageRect overlayRect;
    ImageFormat overlayFormat;
    void *screenData;
    int screenStride;           /* stored scanline length in bytes */
    int currentFrame;           // currentFrame==-1 means image is not loaded
    int loopCount;
    int x, y;
    rgbquad_t colorIndex[SPLASH_COLOR_MAP_SIZE];
    int isVisible;
    char*       fileName;       /* stored in 16-bit unicode (jchars) */
    int         fileNameLen;
    char*       jarName;        /* stored in 16-bit unicode (jchars) */
    int         jarNameLen;
#if defined(WITH_WIN32)
    BOOL isLayered;
    HWND hWnd;
    HPALETTE hPalette;
#elif defined(WITH_X11)
    int controlpipe[2];
    Display *display;
    Window window;
    Screen *screen;
    Visual *visual;
    Colormap cmap;
    pthread_mutex_t lock;
    Cursor cursor;
    XWMHints* wmHints;
} Splash;

/* various shared and/or platform dependent splash screen functions */

Splash *SplashGetInstance();

int SplashIsStillLooping(Splash * splash);
void SplashNextFrame(Splash * splash);
void SplashStart(Splash * splash);
void SplashCreateThread(Splash * splash);
unsigned SplashTime();
void SplashDone(Splash * splash);

void SplashInitPlatform(Splash * splash);
void SplashDonePlatform(Splash * splash);
void SplashDone(Splash * splash);
void SplashUpdate(Splash * splash);
void SplashUpdateScreenData(Splash * splash);

void SplashLock(Splash * splash);
void SplashUnlock(Splash * splash);

void SplashCleanup(Splash * splash);
void SplashCleanupPlatform(Splash * splash);

void SplashClosePlatform();

void SplashReconfigure();

char* SplashConvertStringAlloc(const char* in, int *size);

typedef struct SplashStream {
    int (*read)(void* pStream, void* pData, int nBytes);
    int (*peek)(void* pStream);
    void (*close)(void* pStream);
    union {
        struct {
            FILE* f;
        } stdio;
        struct {
            unsigned char* pData;
            unsigned char* pDataEnd;
        } mem;
    } arg;
} SplashStream;

int SplashStreamInitFile(SplashStream * stream, const char* filename);
int SplashStreamInitMemory(SplashStream * stream, void * pData, int size);

/* image decoding */
int SplashDecodeGifStream(Splash * splash, SplashStream * stream);
int SplashDecodeJpegStream(Splash * splash, SplashStream * stream);
int SplashDecodePngStream(Splash * splash, SplashStream * stream);

/* utility functions */

int BitmapToYXBandedRectangles(ImageRect * pSrcRect, RECT_T * out);

void SplashInitFrameShape(Splash * splash, int imageIndex);

#define SAFE_TO_ALLOC(c, sz)                                               \
    (((c) > 0) && ((sz) > 0) &&                                            \
     ((0xffffffffu / ((unsigned int)(c))) > (unsigned int)(sz)))

#define dbgprintf printf