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Overview
| Comment: | Fix a bug also present in standard Tk: Trailing segments of image data are not skipped, final 0 byte is not skipped, -index over 1 should not work IMHO. |
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| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | tip-529-image-metadata |
| Files: | files | file ages | folders |
| SHA3-256: |
0101cd3f328259414c920f9af83dfa7c |
| User & Date: | oehhar 2019-02-01 18:15:55.549 |
Context
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2019-02-01
| ||
| 18:27 | Correct metadata ref counting to be cleared in the error case. check-in: fbbe3b6e user: oehhar tags: tip-529-image-metadata | |
| 18:15 | Fix a bug also present in standard Tk: Trailing segments of image data are not skipped, final 0 byte is not skipped, -index over 1 should not work IMHO. check-in: 0101cd3f user: oehhar tags: tip-529-image-metadata | |
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2018-12-19
| ||
| 11:18 | TIP529: option -metadata is now dict. Test crash apparently fixed by trunk merge check-in: 9f5d05d9 user: oehhar tags: tip-529-image-metadata | |
Changes
Changes to generic/tkImgGIF.c.
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}
/*
* We've successfully read the GIF frame (or there was nothing to read,
* which suits as well). We're done.
*/
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}
/*
* We've successfully read the GIF frame (or there was nothing to read,
* which suits as well). We're done.
*/
while (1) {
if (-1 == (gifLabel = ReadOneByte( interp, gifConfPtr, chan ) ) ) {
goto error;
}
switch (gifLabel) {
case GIF_TERMINATOR:
break;
|
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int len, int rows,
unsigned char cmap[MAXCOLORMAPSIZE][4],
int srcX, int srcY,
int interlace,
int transparent)
{
unsigned char initialCodeSize;
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int len, int rows,
unsigned char cmap[MAXCOLORMAPSIZE][4],
int srcX, int srcY,
int interlace,
int transparent)
{
unsigned char initialCodeSize;
int xpos = 0, ypos = 0, pass = 0, i, count;
register unsigned char *pixelPtr;
static const int interlaceStep[] = { 8, 8, 4, 2 };
static const int interlaceStart[] = { 0, 4, 2, 1 };
unsigned short prefix[(1 << MAX_LWZ_BITS)];
unsigned char append[(1 << MAX_LWZ_BITS)];
unsigned char stack[(1 << MAX_LWZ_BITS)*2];
register unsigned char *top;
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}
ypos = interlaceStart[pass];
}
} else {
ypos++;
}
pixelPtr = imagePtr + (ypos) * len * ((transparent>=0)?4:3);
}
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
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}
ypos = interlaceStart[pass];
}
} else {
ypos++;
}
pixelPtr = imagePtr + (ypos) * len * ((transparent>=0)?4:3);
}
/*
* Now read until the final zero byte.
* It was observed that there might be 1 length blocks
* (test imgPhoto-14.1) which are not read.
*
* The field "stack" is abused for temporary buffer. it has 4096 bytes
* and we need 256.
*
* Loop until we hit a 0 length block which is the end sign.
*/
while ( 0 < (count = GetDataBlock(gifConfPtr, chan, stack)))
{
if (-1 == count ) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"error reading GIF image: %s", Tcl_PosixError(interp)));
return TCL_ERROR;
}
}
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
|
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Changes to generic/tkImgPhoto.c.
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}
if (masterPtr->dataString != NULL) {
Tcl_DecrRefCount(masterPtr->dataString);
}
if (masterPtr->format != NULL) {
Tcl_DecrRefCount(masterPtr->format);
}
Tk_FreeOptions(configSpecs, (char *) masterPtr, NULL, 0);
ckfree(masterPtr);
}
/*
*----------------------------------------------------------------------
*
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}
if (masterPtr->dataString != NULL) {
Tcl_DecrRefCount(masterPtr->dataString);
}
if (masterPtr->format != NULL) {
Tcl_DecrRefCount(masterPtr->format);
}
if (masterPtr->metadata != NULL) {
Tcl_DecrRefCount(masterPtr->metadata);
}
Tk_FreeOptions(configSpecs, (char *) masterPtr, NULL, 0);
ckfree(masterPtr);
}
/*
*----------------------------------------------------------------------
*
|
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