added some code that allowed buggy images from Photoshop 6.0.1 to work, fixed RLE pixel skipping code
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@726 a95241bf-73f2-0310-859d-f6bbb57e9c96
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@ -1585,6 +1585,39 @@ translate_from_bmppal_to_bits(BPositionIO *inSource,
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return B_OK;
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}
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// ---------------------------------------------------------------
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// bmp_memset
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//
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// Copies data from setto into dest for len bytes. If len <= 4,
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// memcpy is used because memset doesn't seem to do anything if
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// len is less than or equal to 4. When len > 4, memset is used
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// to copy setto over and over into dest.
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//
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// Preconditions:
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//
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// Parameters: dest, where data will be written
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//
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// setto, the data to copy to dest
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//
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// len, the amount of bytes to copy to
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// dest, if more than 4,
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// the 4 bytes that is setto is
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// copied to dest over and over
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//
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// Postconditions:
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//
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// Returns: whatever memcpy and memset return
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// ---------------------------------------------------------------
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void *
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bmp_memset(void *dest, int setto, size_t len)
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{
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if (len <= 4)
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return memcpy(dest, &setto, len);
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else
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return memset(dest, setto, len);
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}
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// ---------------------------------------------------------------
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// translate_from_bmppalr_to_bits
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//
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@ -1645,12 +1678,18 @@ translate_from_bmppalr_to_bits(BPositionIO *inSource,
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while (rd > 0) {
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// repeated color
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if (count) {
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// abort if count is greater than the number of
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// pixels remaining in the current row
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if (count + bmppixcol > msheader.width) {
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// abort if all of the pixels in the row
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// have already been drawn to
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if (bmppixcol == msheader.width) {
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rd = -1;
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break;
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}
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// if count is greater than the number of
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// pixels remaining in the current row,
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// only process the correct number of pixels
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// remaining in the row
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if (count + bmppixcol > msheader.width)
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count = msheader.width - bmppixcol;
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rd = inSource->Read(&indices, 1);
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if (rd != 1) {
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@ -1676,8 +1715,8 @@ translate_from_bmppalr_to_bits(BPositionIO *inSource,
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case 0:
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// if there are columns remaing on this
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// line, set them to the color at index zero
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if (bmppixcol != msheader.width)
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memset(bitsRowData + (bmppixcol * 4), defaultcolor,
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if (bmppixcol < msheader.width)
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bmp_memset(bitsRowData + (bmppixcol * 4), defaultcolor,
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(msheader.width - bmppixcol) * 4);
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outDestination->Write(bitsRowData, bitsRowBytes);
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bmppixcol = 0;
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@ -1699,7 +1738,7 @@ translate_from_bmppalr_to_bits(BPositionIO *inSource,
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}
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while (bmppixrow < msheader.height) {
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memset(bitsRowData + (bmppixcol * 4), defaultcolor,
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bmp_memset(bitsRowData + (bmppixcol * 4), defaultcolor,
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(msheader.width - bmppixcol) * 4);
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outDestination->Write(bitsRowData, bitsRowBytes);
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bmppixcol = 0;
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@ -1737,7 +1776,7 @@ translate_from_bmppalr_to_bits(BPositionIO *inSource,
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// set all pixels to the first entry in
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// the palette, for the number of rows skipped
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while (dy > 0) {
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memset(bitsRowData + (bmppixcol * 4), defaultcolor,
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bmp_memset(bitsRowData + (bmppixcol * 4), defaultcolor,
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(msheader.width - bmppixcol) * 4);
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outDestination->Write(bitsRowData, bitsRowBytes);
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bmppixcol = 0;
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@ -1747,7 +1786,7 @@ translate_from_bmppalr_to_bits(BPositionIO *inSource,
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}
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if (bmppixcol < (uint32) lastcol + dx) {
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memset(bitsRowData + (bmppixcol * 4), defaultcolor,
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bmp_memset(bitsRowData + (bmppixcol * 4), defaultcolor,
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(dx + lastcol - bmppixcol) * 4);
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bmppixcol = dx + lastcol;
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}
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@ -1758,13 +1797,18 @@ translate_from_bmppalr_to_bits(BPositionIO *inSource,
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// code >= 3
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// read code uncompressed indices
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default:
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// abort if number of uncompressed pixels
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// is larger than the number of pixels remaining
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// in the current row
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if (code + bmppixcol > msheader.width) {
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// abort if all of the pixels in the row
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// have already been drawn to
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if (bmppixcol == msheader.width) {
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rd = -1;
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break;
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}
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// if code is greater than the number of
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// pixels remaining in the current row,
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// only process the correct number of pixels
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// remaining in the row
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if (code + bmppixcol > msheader.width)
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code = msheader.width - bmppixcol;
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uint8 uncomp[256];
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int32 padding;
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