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Initial Visual Studio support.

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This commit is contained in:
Michael R Sweet
2021-06-21 11:39:06 -04:00
parent e9d5e082af
commit 6f02bdd301
12 changed files with 327 additions and 13 deletions
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14
pdfio-stream.c
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@@ -706,7 +706,7 @@ pdfioStreamWrite(
pbpixel = st->pbpixel;
bufptr = (const unsigned char *)buffer;
bufsecond = buffer + pbpixel;
bufsecond = bufptr + pbpixel;
while (bytes > 0)
{
@@ -736,7 +736,7 @@ pdfioStreamWrite(
for (remaining = pbline; remaining > 0; remaining --, bufptr ++, sptr ++)
{
if (bufptr >= bufsecond)
*sptr = *bufptr - bufptr[-pbpixel];
*sptr = *bufptr - bufptr[-(int)pbpixel];
else
*sptr = *bufptr;
}
@@ -755,7 +755,7 @@ pdfioStreamWrite(
for (remaining = pbline; remaining > 0; remaining --, bufptr ++, sptr ++, pptr ++)
{
if (bufptr >= bufsecond)
*sptr = *bufptr - (bufptr[-pbpixel] + *pptr) / 2;
*sptr = *bufptr - (bufptr[-(int)pbpixel] + *pptr) / 2;
else
*sptr = *bufptr - *pptr / 2;
}
@@ -767,7 +767,7 @@ pdfioStreamWrite(
for (remaining = pbline; remaining > 0; remaining --, bufptr ++, sptr ++, pptr ++)
{
if (bufptr >= bufsecond)
*sptr = *bufptr - stream_paeth(bufptr[-pbpixel], *pptr, pptr[-pbpixel]);
*sptr = *bufptr - stream_paeth(bufptr[-(int)pbpixel], *pptr, pptr[-(int)pbpixel]);
else
*sptr = *bufptr - stream_paeth(0, *pptr, 0);
}
@@ -939,7 +939,7 @@ stream_read(pdfio_stream_t *st, // I - Stream
for (; bufptr < bufsecond; remaining --, sptr ++)
*bufptr++ = *sptr;
for (; remaining > 0; remaining --, sptr ++, bufptr ++)
*bufptr = *sptr + bufptr[-pbpixel];
*bufptr = *sptr + bufptr[-(int)pbpixel];
break;
case 2 : // Up
for (; remaining > 0; remaining --, sptr ++, pptr ++)
@@ -949,13 +949,13 @@ stream_read(pdfio_stream_t *st, // I - Stream
for (; bufptr < bufsecond; remaining --, sptr ++, pptr ++)
*bufptr++ = *sptr + *pptr / 2;
for (; remaining > 0; remaining --, sptr ++, pptr ++, bufptr ++)
*bufptr = *sptr + (bufptr[-pbpixel] + *pptr) / 2;
*bufptr = *sptr + (bufptr[-(int)pbpixel] + *pptr) / 2;
break;
case 4 : // Paeth
for (; bufptr < bufsecond; remaining --, sptr ++, pptr ++)
*bufptr++ = *sptr + stream_paeth(0, *pptr, 0);
for (; remaining > 0; remaining --, sptr ++, pptr ++, bufptr ++)
*bufptr = *sptr + stream_paeth(bufptr[-pbpixel], *pptr, pptr[-pbpixel]);
*bufptr = *sptr + stream_paeth(bufptr[-(int)pbpixel], *pptr, pptr[-(int)pbpixel]);
break;
default :